WO2018103666A1 - 打草机 - Google Patents

打草机 Download PDF

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Publication number
WO2018103666A1
WO2018103666A1 PCT/CN2017/114836 CN2017114836W WO2018103666A1 WO 2018103666 A1 WO2018103666 A1 WO 2018103666A1 CN 2017114836 W CN2017114836 W CN 2017114836W WO 2018103666 A1 WO2018103666 A1 WO 2018103666A1
Authority
WO
WIPO (PCT)
Prior art keywords
signal
rope
grass
pay
lawnmower
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2017/114836
Other languages
English (en)
French (fr)
Inventor
查霞红
赵凤丽
杨雪雨
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Positec Power Tools Suzhou Co Ltd
Original Assignee
Positec Power Tools Suzhou Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201611108348.8A external-priority patent/CN108142074A/zh
Priority claimed from CN201710180519.6A external-priority patent/CN108617226A/zh
Application filed by Positec Power Tools Suzhou Co Ltd filed Critical Positec Power Tools Suzhou Co Ltd
Priority to EP17879456.6A priority Critical patent/EP3552471B1/en
Priority to US16/461,269 priority patent/US20190269070A1/en
Publication of WO2018103666A1 publication Critical patent/WO2018103666A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D34/00—Mowers; Mowing apparatus of harvesters
    • A01D34/006—Control or measuring arrangements
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D34/00—Mowers; Mowing apparatus of harvesters
    • A01D34/01—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus
    • A01D34/412—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters
    • A01D34/416—Flexible line cutters
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D34/00—Mowers; Mowing apparatus of harvesters
    • A01D34/01—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus
    • A01D34/412—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters
    • A01D34/416—Flexible line cutters
    • A01D34/4161—Means for feeding cutter line
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D34/00—Mowers; Mowing apparatus of harvesters
    • A01D34/01—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus
    • A01D34/412—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters
    • A01D34/416—Flexible line cutters
    • A01D34/4166—Mounting or replacement of the lines
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D34/00—Mowers; Mowing apparatus of harvesters
    • A01D34/01—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus
    • A01D34/412—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters
    • A01D34/416—Flexible line cutters
    • A01D34/4167—Protection devices
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D34/00—Mowers; Mowing apparatus of harvesters
    • A01D34/01—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus
    • A01D34/412—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters
    • A01D34/416—Flexible line cutters
    • A01D34/4161—Means for feeding cutter line
    • A01D34/4162—Means for feeding cutter line automatically
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D34/00—Mowers; Mowing apparatus of harvesters
    • A01D34/01—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus
    • A01D34/412—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters
    • A01D34/416—Flexible line cutters
    • A01D34/4161—Means for feeding cutter line
    • A01D34/4163—Means for feeding cutter line by triggered line feedout, e.g. bump-feeding

Definitions

  • Embodiments of the present disclosure relate to garden finishing tools, and more particularly to a lawnmower.
  • Lawn mowers are commonly used for lawn trimming work in homes and public places.
  • the straw ropes equipped with the lawn mower follow the rotation of the wire box and cut the grass with different heights on the lawn. Since the normal working state is non-stop rubbing, the consumption of straw rope is very fast.
  • the operator is unable to clearly understand the current use condition of the straw rope during the use of the lawnmower, resulting in the use of the straw rope in the middle of the work and the accidental loss of work due to the inability to replace or replenish in time, which brings inconvenience to the use. .
  • a lawnmower comprising: a casing; a wire storage device for accommodating a straw rope; a grass head having an outlet hole, the grass rope passing through the outlet hole; Driving the grass head to rotate to drive the grass rope to pass through the length of the outlet hole for cutting work; and a pay-off mechanism capable of releasing the grass rope and increasing the grass rope to pass through a length of the outlet hole; and a calculation unit for counting the used and/or remaining amount of the grass rope in response to the payout signal; and a reminding unit, wherein the reminding unit is configured to use the calculating unit The statistical usage of the used and/or remaining amount of the straw rope sends a reminder signal to alert the user.
  • the reminder unit includes a display for displaying the used amount and/or remaining amount of the grass rope.
  • the reminding unit includes a display, when the remaining amount of the grassing rope counted by the calculating unit is lower than a first preset value, or the grassing rope counted by the calculating unit When the used amount exceeds the second preset value, the display output display result reminds the user that the remaining amount of the straw rope is insufficient.
  • the reminder unit includes an alarm, when the calculation unit counts When the remaining amount of the straw rope is lower than the first preset value, or the usage amount of the grass rope that is calculated by the calculation unit exceeds the second preset value, the alarm device sends an alarm signal to remind the user The remaining amount of the straw rope is insufficient.
  • the first preset value ranges from 5% to 15% of the initial total amount of the grass rope, or the first preset value is capable of causing the pay-off mechanism to perform the release.
  • the amount of line 25-50 times.
  • the second preset value ranges from 85% to 95% of the initial total amount of the grass rope.
  • the reminding unit further includes a wireless transmission module, and the wireless transmission module transmits the used and/or remaining amount of the grass rope that is last counted by the computing unit to the user mobile phone client.
  • the calculation unit includes a calculator and a reset switch, and the calculator can calculate the used amount of the straw rope according to the payout signal, and the reset switch is used to The calculator performs a zero reset.
  • the computing unit further includes a memory and a processor
  • the memory is configured to store an initial amount of the grass rope that can be used
  • the processor is configured to acquire the initial total amount and calculate the Determining a difference between the initial total amount and the used amount of the grass rope, and issuing a prompt signal when the difference is less than or equal to a preset value
  • the reminding unit is configured to issue the reminding signal according to the prompt signal .
  • the calculation unit includes a calculator and a reset switch
  • the calculator is configured to calculate a remaining amount of the grass rope according to the payout signal
  • the reset switch is configured to The remaining amount of the straw rope in the calculator is reset.
  • the computing unit includes a memory for storing an initial amount of the grass rope that can be used, and a processor for acquiring a remaining amount of the grass rope, And generating a prompt signal when the remaining amount of the straw rope is less than or equal to a preset value, and the reminding unit is configured to issue the reminder signal according to the prompt signal.
  • the pay-off mechanism is activated in response to the each payout signal to release the grass rope, and when the pay-off mechanism receives one of the pay-off signals, the pay-off mechanism Starting once, the length of the grassing cord passing through the outlet hole is increased once, and the calculating unit counts the used amount and/or the remaining amount of the grassing rope according to the number of times of the payout signal.
  • the lawnmower further includes a start switch configured to generate a start signal according to a user operation to control the motor to be turned on or off; the payoff signal includes the start signal, The pay-off mechanism releases the grass rope according to the start signal, and the calculating unit is configured to calculate the used amount and/or the remaining amount of the grass rope according to the start signal.
  • a start switch configured to generate a start signal according to a user operation to control the motor to be turned on or off
  • the payoff signal includes the start signal
  • the pay-off mechanism releases the grass rope according to the start signal
  • the calculating unit is configured to calculate the used amount and/or the remaining amount of the grass rope according to the start signal.
  • the calculating unit includes a toggle switch associated with the activation switch, the toggle switch is linked to open after the activation switch is pressed, and the calculation unit is configured according to the toggle switch The opening signal is added or subtracted correspondingly to the used amount and the remaining amount of the straw rope.
  • the lawnmower further includes a manual pay-off switch
  • the pay-off signal further includes a manual pay-off signal
  • the manual pay-off switch is configured to generate the manual pay-off signal according to a user operation
  • the pay-off mechanism releases the grass rope according to the manual release signal
  • the calculating unit is further configured to calculate the used amount and/or the remaining amount of the grass rope according to the manual pay-off signal.
  • the calculation unit includes a toggle switch associated with the activation switch and the manual release switch, the toggle switch after the activation switch or the manual release switch is pressed
  • the linkage unit is opened, and the calculating unit adds and subtracts the used amount and the remaining amount of the grassing rope according to the opening signal of the toggle switch.
  • the lawnmower further includes a manual pay-off switch
  • the pay-off signal includes a manual pay-off signal
  • the manual pay-off switch generates the manual pay-off signal according to a user operation
  • the pay-off mechanism releases the straw rope according to the manual pay-off signal
  • the calculating unit is configured to calculate the used amount and/or the remaining amount of the straw rope according to the manual pay-off signal.
  • the calculating unit includes a toggle switch that is associated with the manual payoff switch, and the toggle switch is linked to open after the manual lift switch is pressed, and the calculating unit is configured according to the The activation signal of the toggle switch is added and subtracted correspondingly to the used amount and the remaining amount of the grass rope.
  • the pay-off signal includes a smart pay-off signal;
  • the pay-off mechanism includes a smart pay-off mechanism for controlling the grass-roping rope for automatic pay-off, when the lawnmower works
  • the smart pay-off mechanism senses a centrifugal force change after the grass rope wear becomes short, and starts automatic pay-off and generates the smart release. Line signal.
  • the pay-off signal includes a smart pay-off signal;
  • the grass-carrying machine is provided with an intelligent pay-off system for controlling the grass-roping rope for automatic pay-off, the smart pay-off system pair
  • the specific parameter reflecting the current length of the straw string is compared with the preset parameter, and the smart payout signal is generated according to the comparison result.
  • the computing unit is configured to count the used and/or remaining amount of the grass rope directly based on the smart payout signal.
  • the lawnmower further includes a start switch configured to generate a start signal according to a user operation to control the motor to be turned on or off; the calculating unit is further configured to The payout signal calculates the used amount and/or the remaining amount of the grassing rope, and the calculating unit is further configured to calculate the used amount and/or the remaining amount of the grassing rope according to the starting signal.
  • the smart pay-off system includes a detection module and a controller in which the preset parameter is stored, and the detection module is configured to detect the specific parameter reflecting the length of the grass rope.
  • the controller is configured to compare the detected specific parameter with the preset parameter, and selectively output the smart release signal according to the comparison result, where the pay-off mechanism selects according to the smart release signal Sexually activate and release the straw.
  • the specific parameter includes an operating current value of the lawnmower
  • the preset parameter includes a preset current value
  • the controller compares the working current value with the preset current value For comparison, if the operating current value is less than the preset current value, the controller outputs the smart payout signal to activate the pay-off mechanism.
  • the specific parameter includes a driving voltage of the lawnmower, and the controller calculates the preset current value by using the driving voltage.
  • the smart pay-off system includes a detection module and a controller, the detection module includes a Hall sensor, the grass rope has magnetic properties; and the controller does not detect the Hall sensor When the magnetic signal of the straw rope is output, the smart payout signal is output to activate the pay-off mechanism to release the line.
  • the smart payoff system includes a detection module and a controller
  • the detection module includes a color recognition sensor capable of recognizing the color of the grass rope
  • the controller recognizes when the color recognition sensor does not When the color of the straw rope is output, the smart payout signal is output to activate the pay-off mechanism to release the line.
  • the payout signal comprises a tapping line signal, the grass head comprising a tapping head, the tapping head being operative to move between a first position and a second position to initiate The payoff
  • the mechanism releases the grassing line
  • the knocking payout signal is generated when the knocking head moves between the first position and the second position
  • the calculating unit releases the line according to the tapping
  • the signal is calculated for the used and/or remaining amount of the straw.
  • the lawnmower further includes a detecting mechanism
  • the payoff signal further includes when the detecting mechanism detects that the length of the straw rope outside the wire box increases
  • the calculation unit is further configured to calculate the used amount and/or the remaining amount of the grass rope according to the direct payout signal.
  • the lawn mower further includes a detecting mechanism
  • the wire reamer includes a wire box and a bobbin housed in the wire box
  • the grass rope is wound around the wire reel
  • the payoff signal further includes a direct payout signal sent when the detecting mechanism detects a relative rotation of the reel and the wire box
  • the calculating unit is further configured to The signal is calculated for the used and/or remaining amount of the straw.
  • the motor is a brushless motor.
  • FIG. 1 is a cross-sectional view showing the structure of a lawnmower according to an embodiment of the present disclosure
  • FIG 2 is a schematic view showing the structure of the grass head of the lawnmower shown in Figure 1;
  • FIG 3 is a block diagram of the lawnmower shown in Figure 1.
  • FIG. 4 is a schematic diagram of a module of a lawnmower according to another embodiment of the present disclosure.
  • the lawnmower 100 includes a housing 10, a motor 20, a grass head 110 driven by the motor 20, a calculation unit 50, a wire storage device, A straw rope 45 housed in the storage line (see Figure 3).
  • the wire reel includes a wire box 40 and a reel 43 received in the wire box 40, and the grassing rope 45 is wound on the reel 43.
  • the grass head 110 includes an outlet hole, and the straw rope 45 is
  • the output hole 21 is disposed in the housing 10 and has an output shaft 21 for providing driving power.
  • the motor drives the grass head 110 to rotate, thereby driving the grass rope 45 to extend beyond the length of the wire hole for cutting work.
  • the wire box 40 is fixedly disposed with a positioning post 41, a reel 43 that is sleeved on the positioning post 41, and a grassing rope 45.
  • the output shaft 21 is connected to the wire box 40 through the positioning post 41.
  • One end of the straw rope 45 is wound around the reel 43 and the other end of the straw rope 45 is threaded out of the wire box 40.
  • the lawnmower 100 further includes a pay-off mechanism capable of releasing the grassing rope 45 to increase the length of the straw rope 45 outside the outlet hole, and the calculating unit 50 is configured to respond to the pay-off signal to the straw rope 45. The used amount and/or the remaining amount is calculated.
  • the lawnmower 100 further includes a reminding unit for issuing a reminding signal to remind the user according to the used amount and/or the remaining amount of the straw rope 45 counted by the calculating unit 50.
  • the reminder unit includes a display 52 for displaying the used and/or remaining amount of the straw rope 45 so that the user can know the usage of the grass line in real time.
  • the display 52 can display the used amount and/or the remaining amount of the straw rope 45 in real time.
  • the display may not be displayed in real time, and only when the remaining amount of the straw rope 45 calculated by the calculating unit 50 is lower than the first
  • the display shows the used amount and/or the remaining amount of the straw rope, thereby reminding the user to use the remaining amount of the straw rope. The amount is already insufficient.
  • the reminding unit further includes an alarm 56.
  • the alarm 56 sends an alarm signal to remind the user that the remaining amount of the straw rope 45 is insufficient.
  • the reminder unit may also include only the alarm 56 without setting the display 52.
  • the first preset value is taken The value range is 5%-15% of the initial total amount of the straw rope 45, or the first preset value is an amount that enables the pay-off mechanism to perform the pay-off line 25-50 times, and the second preset value ranges from The initial setting of the straw rope 45 is 85%-95%, so that the user can know that the grassing line is insufficient before the next work is not affected, and prepare the spare straw rope in advance. Because the user usually works for 30 minutes each time, about 25 times each time, that is, in order not to affect the next grass-planting work, it is necessary to remind the user that the remaining amount is insufficient before the next grass-drawing work. The guarantee will not affect the grass-breaking work this time.
  • the reminding unit further includes a wireless transmission module, and the wireless transmission module transmits the used amount and/or the remaining amount of the straw rope 45 counted by the calculating unit 50 to the user mobile phone client, and reminds the user to purchase in time. Hit the rope.
  • the wireless transmission module transmits the used amount and/or the remaining amount of the straw rope 45 to the user's mobile phone client after the last use, and the user can consult the mobile phone client to view the grass rope before the next use of the lawnmower.
  • the used amount and/or the remaining amount can be prepared for purchase of the straw rope and the reel in advance.
  • the data transmitted by the wireless transmission module to the user's mobile phone client also includes the website for purchasing the straw rope or the nearby grass rope. Shopping store.
  • the lawnmower 100 further includes an extension rod 22, and the wire box 40 is disposed at one end of the extension rod 20, and is disposed in the grass head 110.
  • the wire box 40 is rotated together, of course.
  • the wire box 40 can also be disposed outside the grass head 110.
  • the wire reel 43 is received in the wire box 40, and the grass line is taken out from the wire box 40 and protrudes from the outlet hole on the grass head 110.
  • the housing 10 further includes a handle disposed at the other end of the extension rod 20.
  • the handle includes a main handle 23 and an auxiliary handle 24, so that the operator can lift and operate more reliably through the main handle 23 and the auxiliary handle 24. Grass machine work.
  • the pay-off mechanism is capable of releasing the grass-worn rope 45 according to the pay-off signal according to the relative rotation of the reel 43 and the wire box 40, and increasing the length of the grass-worn rope 45 passing through the outlet hole.
  • the pay-off mechanism is activated to release the straw rope 45 in response to each of the pay-off signals.
  • the pay-off mechanism receives a pay-off signal
  • the pay-off mechanism is activated once, and the straw rope 45 is passed out of the outlet hole.
  • the length is increased once, and the calculating unit counts the used amount and/or the remaining amount of the straw rope according to the number of times of the payout signal.
  • the used amount and/or the remaining amount of the straw rope can be the number of times the straw machine has been engaged and/or the number of remaining line lifts, and of course the length of the straw rope used and/or Or the remaining length. That is to say, the length of the grassing line released at the start of each line-up mechanism for a specific lawnmower is basically the same.
  • the initial total length of the straw rope is constant, the initial total length and the length of the straw rope can be used.
  • Length meter for releasing the grass line The number of times that the line can be executed can be calculated. Of course, the initial grass string can be converted into the total number of times the line can be executed.
  • the calculation unit 50 is used to count the signal of each line to calculate the number of times the straw is used. And/or the number of remaining times, the calculation unit may also calculate the length of the total straw rope to be discharged based on the number of times the line signal is released, thereby calculating the used length and/or remaining length of the straw rope.
  • the lawnmower 100 includes a control switch 30 disposed on the housing 10 for generating a payout signal in accordance with user operations.
  • the control switch 30 includes a start switch 31, and the payout signal includes an enable signal.
  • the start switch 31 is for generating a start signal according to a user operation, and the pay-off mechanism releases the grass rope 45 according to the start signal, and the calculation unit 50 is configured to calculate the used amount and/or the remaining amount of the straw rope 45 according to the start signal.
  • the calculation unit 50 correspondingly calculates the used amount and/or the remaining amount of the straw rope 45 in accordance with the above-described activation signal.
  • the control switch 30 further includes a manual payoff switch 33, and correspondingly, the payout signal includes a manual payout signal.
  • the manual release switch 33 is for generating a manual release signal according to a user operation, and the pay-off mechanism releases the straw 45 according to the manual release signal. In this way, the user can control whether to pay the line or not, and the line is reliable according to the needs of the user during the normal grass cutting process.
  • the pay-off mechanism includes at least one pay-off electrical switch and a control device.
  • the pay-off electrical switch selectively activates the control device according to an operation signal of the manual pay-off switch 33 to enable the reel 43 to A second state of difference in rotational speed is generated between the wire boxes 40, thereby releasing the grassing line.
  • the control device includes a motor 20.
  • the control device may further include other driving devices, such as an electromagnet or a secondary motor independent of the motor 20, as long as the drive enables the reel 43 and the wire box 40 to be The second state in which the difference in rotational speed is generated should be within the scope of protection of the embodiments of the present disclosure.
  • control device further includes a control circuit electrically connected to the motor 20 for controlling the change in the rotational speed of the motor 20 during operation, so that the motor 20 is switched between the pay-off speed and the operating speed, thereby realizing Release the line.
  • the control circuit preferably adopts a brake switch circuit, and the discharge electric switch preferably adopts a single-pole double-throw switch, activates the manual release switch 33, the discharge electric switch is closed, the motor 20 is short-circuited, and the rotational speed of the motor 20 is instantaneously reduced to zero, winding
  • the disc 43 rotates relative to the wire box 40, and the grass line is released, releasing
  • the manual payout switch 33 returns the motor to the working speed, and the reel 43 and the wire box 40 resume the first state of being relatively stationary.
  • the pay-off electrical switch may be a Mosfet switch
  • the manual pay-off switch 33 is operable to generate a manual pay-off signal
  • the lawnmower further includes a controller, and the controller controls the Mosfet switch to be turned on according to the manual pay-off signal. Or disconnected to short-circuit the motor, and a rotational speed difference between the reel 43 and the wire box 40 is released to release the straw.
  • the pay-off electrical switch is not limited to the above form, and the pay-off electrical switch may be a mechanical switch or an electronic switch, as long as other electronic components that can be disconnected and closed under electronic signals or mechanical control should be constructed. It is encompassed within embodiments of the present disclosure.
  • the start switch 31 when the start switch 31 is activated, the start switch 31 will generate the same start signal as in the above embodiment, the payoff signal includes the start signal, the motor 20 is activated, and the payoff mechanism is activated according to the start signal.
  • the straw rope 45 is released, and the calculation unit 50 calculates the used amount and/or the remaining amount of the straw rope 45 based on the activation signal.
  • the motor 20 is short-circuited, the motor 20 is decelerated to zero, and the reel is wound. 43
  • the speed difference is generated with respect to the wire box 40, and the grass rope 45 is released on the original basis; when the manual release switch 33 is released or the set time is elapsed, the rotation speed of the motor 20 is restored, and the reel 43 and the wire box 40 resume synchronous rotation. Since the operation is performed during normal operation, that is, while the cutting work is not interrupted, the manual release switch 33 is selected to perform the payout, and the operation is convenient, and the whole machine of the grass cutter 100 is not required. A reboot is performed, which greatly saves the user's waiting time for re-release.
  • the calculation unit 50 performs the calculation of the used amount and/or the remaining amount of the straw rope 45 according to the manual payout signal, that is, the grass rope 45 is laid off twice in the whole process, and the corresponding calculation unit 50 Two calculations were performed.
  • the start switch 31 when the start switch 31 is activated, the start switch 31 only generates a start signal, and the wire box 40 does not respond to the operation of the start switch 31, the grass rope 45 is not released, correspondingly the calculation unit 50 does not calculate the amount and/or remaining amount of the straw rope 45.
  • the grass rope 45 is manually released, and the calculation unit 50 correspondingly uses the used amount and/or remaining of the straw rope 45 according to the manual release signal. The quantity is calculated once. This The sample setting avoids the release of the grass line when the start switch 31 controls the lawn machine to control the switch, and avoids the waste of the grass line.
  • the calculation unit 50 is ensured that the used amount and/or the remaining amount of the straw rope 45 are accurately calculated, so as to facilitate the user to accurately understand the specific use condition of the current straw rope 45.
  • the motor 20 is placed in the front of the housing 10, and the control switch 30 is electrically connected to the motor 20 to control the activation and deactivation of the motor 20 according to the user's pressing operation, and can simultaneously generate a payout signal according to the user's operation.
  • the motor 20 can also be placed in the housing 10, and the control switch 30 is only used to generate a payout signal, and correspondingly the start and stop control of the motor 20 can be operated by an additionally provided switch. It is not limited here.
  • the pay-off mechanism includes a smart pay-off mechanism for controlling the grass-worn rope 45 for automatic pay-off.
  • the straw rope 45 extends out of the length of the outlet hole.
  • the intelligent pay-off mechanism senses a change in centrifugal force after the wear of the grass rope becomes short, and starts automatic pay-off and generates a smart payout signal.
  • the smart pay-off mechanism includes a pay-off device disposed in the grass-carrying head 110. When the grass-carrying head 110 is driven to rotate, the balancer generates a centrifugal force balanced with the centrifugal force of the grass-rotating rope.
  • the pay-off device After the rope wear becomes shorter, the centrifugal force of the payer is greater than the centrifugal force of the grass rope, the pay-off device operates, the intelligent pay-off mechanism is activated, the grass line is released and the intelligent pay-off signal is generated. More specifically, the smart pay-off signal is triggered by the action of the pay-off device.
  • the pay-off device is provided with a proximity switch. When the pay-off device is moved from the first position to the second position, the proximity switch is closed, and the smart The release signal is sent. Of course, the smart release signal can also be sent differently than the proximity switch.
  • the Hall sensor is placed on the wire box, and when the pay-off device is moved from the first position to the second position, The Hall sensor is triggered to issue a smart release signal, and the calculation unit performs a calculation on the used and/or remaining amount of the straw rope 45 according to the smart release signal.
  • control switch 30 only includes a start switch 31 for generating a start signal in response to a user operation to activate the lawnmower 100.
  • the start switch 31 is configured to generate a start signal according to a user operation
  • the payoff signal includes a start signal
  • the payoff mechanism releases the grass rope 45 according to the start signal
  • the calculation unit 50 is configured to use the used amount of the grass rope 45 according to the start signal. The remaining amount is calculated.
  • the take-off signal also includes a smart pay-off signal.
  • the grass-laying machine 100 is provided with a smart pay-off system 60 for controlling the grass-worn rope 45 to perform the starting operation, and the smart pay-off system 60 reflects the current length of the grass-wound rope 45.
  • the calculating unit 50 is configured to directly calculate the used amount and/or the remaining amount of the straw rope 45 according to the smart payout signal, and the calculating unit 50 is further configured to directly use the used amount of the straw rope 45 according to the start signal and/or Or the remaining amount is calculated.
  • the payout signal may also only include the smart payout signal
  • the start switch 31 only generates the start signal
  • the payoff mechanism does not respond to the start signal
  • the calculation unit 50 does not use the used amount of the straw rope 45 according to the start signal.
  • the calculation unit 50 is only used to calculate the used amount and/or the remaining amount of the straw rope 45 directly based on the smart payout signal.
  • the intelligent pay-off system 60 includes a detection module and a controller for storing preset parameters therein, and the detection module is configured to detect a specific parameter reflecting the length of the straw rope 45, and the controller is configured to detect the specific parameter and the preset parameter. A comparison is made and a smart release signal is output based on the comparison to selectively activate and release the straw 45.
  • the specific parameter detected by the detecting module includes the working current value of the lawnmower, wherein under the same working condition, that is, the driving voltage is constant, the larger the load, the larger the operating current value.
  • the working current value of the grasser is smaller. That is to say, by calculating the working current value of the straw setting rope as the preset current value (ie, the preset parameter), the working current value detected during normal operation is compared with the preset current value, if real-time detection is performed.
  • the controller If the working current value is less than the preset current value, it can be judged that the wear of the straw rope reaches or exceeds the set length. At this time, the controller outputs a smart payout signal, and the control straw rope 45 is automatically released from the wire box 40, that is, Once put the line.
  • the working current of the straw set rope measured by the grass cutter under no-load condition is taken as the preset current value.
  • the detecting module detects the driving voltage of the lawnmower 100 (ie, the voltage outputted from both ends of the battery pack in the lawnmower 100 or the voltage across the motor 20), and calculates a preset current value by using the driving voltage.
  • the detection module detects the driving voltage by means of real-time sampling, and may also adopt a periodic, intermittent or other detection manner, which is not limited herein.
  • the characteristics of the lithium battery in the battery pack determine that the input voltage is not constant, the voltage gradually decreases as the discharge time increases.
  • the working current required for different driving voltages is also different, that is, the preset current value will vary with the driving voltage, and the specific one-to-one correspondence Relationship, that is, a driving voltage corresponds to only one preset current value.
  • the controller pre-stores the change relationship between the driving voltage and the operating current of the wear setting length, and the controller first calculates the preset current value by detecting the driving voltage detected by the module, and then the real-time detected working current value and the preset. The current value is compared. If the working current value detected in real time is less than the preset current value, it can be judged that the wear of the straw rope reaches or exceeds the set length. At this time, the controller outputs a smart release signal to control the grass rope 45 by the line. The cassette 40 is automatically released, that is, a payout is performed once.
  • the detecting module does not detect the voltage, and only needs to set a voltage stabilizing module on the output power source to stabilize the voltage across the motor 20 or the battery pack at a certain value, and calculate the preset by the stable voltage.
  • the current value compares the working current value detected during normal operation with the preset current value. If the detected current is less than the preset current, the controller outputs a smart payout signal to initiate the payoff.
  • the detection module includes a Hall sensor, the grass rope is magnetic, and when the straw rope passes the sensing range of the Hall sensor, the Hall sensor senses the magnetic property of the straw rope. When the straw rope wear reaches or exceeds the set length, the Hall sensor does not detect the magnetic signal of the straw rope, and the controller outputs a smart release signal to initiate the discharge.
  • the detection module includes a color recognition sensor capable of recognizing the color of the straw rope, and the color recognition sensor does not recognize when the straw rope wear reaches or exceeds the set length.
  • the color of the straw is used, and the controller recognizes the signal of the sensor according to the color, and outputs a smart release signal to initiate the discharge.
  • the embodiment of the present disclosure further provides an optional embodiment, and the grass-carrying machine 100 further includes a disconnection line disposed on the casing 10.
  • the blade and the broken blade are used to cut the grass rope 45 when the length of the line of the straw rope 45 exceeds the target length, so that the length of the grass rope 45 is maintained within a safe and reasonable range.
  • the detection module includes a shock sensor, and preferably, the shock sensor is disposed at the wire break blade.
  • the shock sensor senses that the free end of the grass rope 45 is cut off and outputs a stop line signal.
  • the device recognizes that the payout signal is stopped and the payout is stopped.
  • the shock sensor may be disposed at the housing 10 as long as the vibration sensor is configured to sense vibrations and is encompassed within the scope of the embodiments of the present disclosure.
  • the payout signal includes a tapping line signal
  • the grass head 110 includes a tapping head operatively movable between the first position and the second position to cause the payout mechanism to initiate release Grass line 45.
  • a tapping payout signal is generated when the tapping head moves between the first position and the second position, and the calculating unit calculates the used amount and/or the remaining amount of the straw string according to the tapping payout signal.
  • the tapping head is provided with a triggering member, and a return spring is arranged between the tapping head and the wire box. In the free state of the spring, the tapping head is located at the first position, the striking head collides with the ground, and the tapping head overcomes the spring.
  • the elastic force moves to the second position, and the wire box of the grass head is provided with a proximity switch.
  • the proximity switch is closed, thereby generating a tapping and discharging signal
  • the tapping head is The spring is restored to the first position by the second position, the pay-off mechanism completes the pay-off, and the proximity switch is closed once, and a tapping and discharging signal is generated.
  • the tapping and discharging signal can be generated not only by using a proximity switch but also by a magnetic signal or a pressure signal.
  • the pay-off signal may be in other forms, such as a detection mechanism for detecting whether the length of the straw-line extension outside the wire box is increased on the direct online box, and the detecting mechanism detects the grass-worn rope outside the wire box.
  • a direct payout signal is issued, and the calculating unit 50 calculates the used amount and/or the remaining amount of the straw rope 45 according to the direct payout signal detected by the detecting mechanism.
  • the detection mechanism increases the length of the wire rope beyond the set length by the length of the detected grass rope.
  • a direct payout signal is issued, which prevents the influence of the false payoff on the calculation unit 50, and ensures the reliability of the calculation unit.
  • the detecting mechanism can detect whether a relative rotation occurs between the reel 43 and the wire box 40, and when the detecting mechanism detects a relative rotation between the reel 43 and the wire box 40, a direct payout is issued.
  • the signal, calculation unit 50 calculates the used amount and/or the remaining amount of the straw rope 45 based on the direct payout signal detected by the detecting mechanism. That is to say, the payout signal is not limited to the specific form of the above embodiment as long as it is included in the protection range of the embodiment of the present disclosure by indirectly or directly obtaining whether or not the signal is discharged.
  • the calculation unit 50 includes a calculator 51 and a reset switch 53.
  • the calculator 51 is connected to the control switch 30 to calculate the amount of the straw rope 45 and display it through the display 52.
  • the reset switch 53 is used to reset the calculator 51.
  • the reset switch 53 can also The automatic reset is not performed by the user operation, and the reset switch 53 is set on the wire box. When a new roll of straw rope 45 is loaded into the wire box 40, the reset switch is automatically reset, so that no manual reset is required, and it is more intelligent.
  • the computing unit 50 includes a memory 54, a processor 55.
  • the memory 54 is used to store the initial total amount that can be used by the straw ropes 45 used by the lawnmower 100, that is, the total usable amount of the unused straw ropes 45 per roll. Since the storage space of the inner box 40 of different models of the grass cutter 100 is different, the type of the straw rope 45 used is different, and for different types of grass ropes 45, the total rope length and the playing time are There is also a difference in the length of the single take-up line of the straw rope 45, so that there will be a certain difference in the initial total amount that can be used for different types of straw ropes 45 in different types of grass-carrying machines 100. Therefore, the initial total amount that can be used for the straw ropes 45 stored in the memory 53 can be stored in advance at the time of shipment.
  • the processor 55 is configured to acquire and calculate a difference between the total amount and the used amount of the straw rope 45, and generate a prompt signal when the difference is less than or equal to a preset value, and the alarm 56 is configured to issue an alarm prompt according to the prompt signal. It indicates that the existing straw rope 45 in the grass cutter 100 is about to be used to remind the operator to replace it in time.
  • the alarm prompts issued by the alarm device 56 can adopt various manners such as a prompt sound (for example, a buzzer sound) and a prompt light, which are not limited herein.
  • the reset switch 53 is used to reset the currently usable amount of the straw rope 45 in the calculator 51, and the calculator 51 is used for the grass rope according to the payout signal of the control switch 30 after the reset.
  • the remaining amount of 45 is calculated.
  • the calculator 51 decrements the initial total amount that the straw rope 45 can use after each control switch 30 is pressed to calculate the remaining amount of the straw rope 45.
  • the processor 55 is configured to acquire the remaining amount of the straw rope 45, and generate a prompt signal when the remaining amount of the straw rope 45 is less than or equal to the first preset value, and the alarm 56 is configured to issue an alarm prompt according to the prompt signal. It indicates that the existing straw rope 45 in the grass cutter 100 is about to be used to remind the operator to replace it in time.
  • the alarm prompts issued by the alarm device 56 can adopt various manners such as a prompt sound (for example, a buzzer sound) and a prompt light, which are not limited herein.
  • the calculator 51 is a mechanical calculator or an electronic calculator.
  • the calculator 51 includes a toggle switch (not shown) that is associated with the control switch 30.
  • the toggle switch is actuated to open after the control switch 30 is pressed, and the amount and remaining amount of the straw rope 45 are correspondingly added and subtracted.
  • the calculating unit 50 includes a toggle switch associated with the activation switch 31.
  • the toggle switch is linked to open after the activation switch 31 is pressed, and the calculator 51 pairs the grass according to the opening signal of the toggle switch. The used amount and the remaining amount of the rope are correspondingly added and subtracted.
  • the toggle switch When the manual release switch 33 is used, the toggle switch is linked with the manual release switch 33 and/or the start switch, and the toggle switch is activated at the manual release switch 33 and or. After the switch is pressed and interlocked, the calculator 51 adds and subtracts the used amount and the remaining amount of the straw rope 45 according to the activation signal of the toggle switch.
  • the calculator 51 is an electronic calculator, the start signal of the calculator 51 for receiving the control switch 30 is triggered, and the amount and remaining amount of the straw rope 45 are correspondingly added and subtracted.
  • the display 52 is disposed on the lawnmower housing 10, such as on the handle 23 or in an adjacent position, and may of course be disposed on the auxiliary handle, and is not limited to the above position, as long as the position of the display is convenient to operate. You can see it.
  • the motor 20 is preferably a brushless motor. Since the brushless motor itself has a control board, the payout signal can be directly collected or calculated through the control board, without separately setting a calculation unit or a detecting mechanism, which can reduce the whole machine. cost.
  • the lawnmower 100 is provided with a method for calculating the amount and/or the remaining amount of the straw rope 45, so that when the straw rope 45 is used in the current grass cutter 100, the amount of the straw rope 45 can be used to remind the user in time. Replace it, and reduce the time when the straw rope 45 has been used up during work.

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Abstract

一种打草机，包括：壳体(10)；线盒(40)，用于收容打草绳(45)，所述打草绳(45)的一端穿出所述线盒(40)外；马达(20)，用于驱动所述线盒(40)旋转以进行切割工作；启动开关(31)，配置为根据用户操作产生启动信号，以控制所述马达(20)启动或关闭；放线机构，能够选择性释放所述打草绳(45)，增加所述打草绳(45)穿出所述线盒(40)外的长度；以及计算单元(50)，所述计算单元(50)用于响应放线信号对所述打草绳(45)的已用量和/或剩余量进行计算。该打草机可对打草绳已用量和/或剩余量进行计算，如此在当前打草机内打草绳可使用量较少时，以提醒用户及时进行更换，减少在使用过程中因打草绳已用完而误时误工。

Description

打草机 技术领域
本公开实施例涉及园林修整工具，特别涉及一种打草机。
背景技术
打草机普遍的应用于家庭和公共场合的草坪修剪工作。目前，打草机配备的打草绳跟随线盒旋转并对草坪上高度不同的草进行切削打理。由于工作常态是不停的碰擦，打草绳的消耗非常快。然而，操作者在使用打草机的过程中因不能清楚了解打草绳当前的使用状况，导致工作中途打草绳已用完而因无法及时更换或补充而误时误工，给使用带来不便。
发明内容
基于此，有必要提供一种具有打草绳余量和/使用量提醒功能的打草机。
一种打草机，其特征在于：包括：壳体；储线器，用于收容打草绳；打草头，具有出线孔，所述打草绳从所述出线孔穿出；马达，用于驱动所述打草头旋转，以带动所述打草绳穿出所述出线孔的长度进行切割工作；放线机构，能够释放所述打草绳，增加所述打草绳穿出所述出线孔的长度；以及计算单元，所述计算单元用于响应放线信号对所述打草绳的已用量和/或剩余量进行统计；提醒单元，所述提醒单元用于根据所述计算单元统计的所述打草绳的已用量和/或剩余量发出提醒信号提醒用户。
在其中一个实施例中，所述提醒单元包括显示器，所述显示器用于显示所述打草绳的已用量和/或剩余量。
在其中一个实施例中，所述提醒单元包括显示器，当所述计算单元统计的所述打草绳的剩余量低于第一预设值时，或所述计算单元统计的所述打草绳的已用量超过第二预设值时，所述显示器输出显示结果提醒用户所述打草绳的剩余量已不足。
在其中一个实施例中，所述提醒单元包括报警器，当所述计算单元统计的 所述打草绳的剩余量低于第一预设值时，或所述计算单元统计的所述打草绳的已用量超过第二预设值时，所述报警器发出报警信号提醒用户所述打草绳的剩余量已不足。
在其中一个实施例中，所述第一预设值的取值范围是所述打草绳初始总量的5％-15％，或者所述第一预设值是能够使放线机构执行放线25-50次的量。
在其中一个实施例中，所述第二预设值的取值范围是所述打草绳初始总量的85％-95％。
在其中一个实施例中，所述提醒单元还包括无线传输模块，所述无线传输模块将所述计算单元最近一次统计的所述打草绳的已用量和/或剩余量传输至用户手机客户端。
在其中一个实施例中，所述计算单元包括计算器及复位开关，所述计算器可根据所述放线信号对所述打草绳的已用量进行计算，所述复位开关用于在对所述计算器进行清零复位。
在其中一个实施例中，所述计算单元还包括存储器和处理器，所述存储器用于储存所述打草绳可使用的初始总量，所述处理器用于获取所述初始总量并计算所述初始总量和所述打草绳的已用量的差值，并当所述差值小于或等于预设值时发出提示信号，所述提醒单元用于根据所述提示信号发出所述提醒信号。
在其中一个实施例中，所述计算单元包括计算器及复位开关，所述计算器用于根据所述放线信号对所述打草绳的剩余量进行计算，所述复位开关用于对所述计算器中所述打草绳的剩余量进行复位。
在其中一个实施例中，所述计算单元包括存储器和处理器，所述存储器用于储存所述打草绳可使用的初始总量，所述处理器用于获取所述打草绳的剩余量，并当所述打草绳的剩余量小于或等于预设值时产生提示信号，所述提醒单元用于根据所述提示信号发出所述提醒信号。
在其中一个实施例中，所述放线机构响应所述每个放线信号而启动以释放所述打草绳，当所述放线机构接收到一个所述放线信号，所述放线机构启动一次，所述打草绳穿出所述出线孔的长度增加一次，所述计算单元根据所述放线信号的次数统计所述打草绳的已用量和/或剩余量。
在其中一个实施例中，所述打草机还包括启动开关，所述启动开关配置为根据用户操作产生启动信号，以控制所述马达启动或关闭；所述放线信号包括所述启动信号，所述放线机构根据所述启动信号释放所述打草绳，所述计算单元用于根据所述启动信号对所述打草绳的已用量和/或剩余量进行计算。
在其中一个实施例中，所述计算单元包括与所述启动开关联动的拨动开关，所述拨动开关在所述启动开关被按压后联动开启，所述计算单元根据所述拨动开关的开启信号对所述打草绳的已用量和剩余量对应地进行加减。
在其中一个实施例中，所述打草机还包括手动放线开关，所述放线信号还包括手动放线信号；所述手动放线开关用于根据用户操作产生所述手动放线信号，所述放线机构根据所述手动放线信号释放所述打草绳，所述计算单元还用于根据所述手动放线信号对所述打草绳的已用量和/或剩余量进行计算。
在其中一个实施例中，所述计算单元包括与所述启动开关和所述手动放线开关联动的拨动开关，所述拨动开关在所述启动开关或所述手动放线开关被按压后联动开启，所述计算单元根据所述拨动开关的开启信号对所述打草绳的已用量和剩余量对应地进行加减。
在其中一个实施例中，所述打草机还包括手动放线开关，所述放线信号包括手动放线信号；所述手动放线开关根据用户操作时产生所述手动放线信号，所述放线机构根据所述手动放线信号释放所述打草绳，所述计算单元用于根据所述手动放线信号对所述打草绳的已用量和/或剩余量进行计算。
在其中一个实施例中，所述计算单元包括与所述手动放线开关联动的拨动开关，所述拨动开关在所述手动放线开关被按压后联动开启，所述计算单元根据所述拨动开关的启动信号对所述打草绳的已用量和剩余量对应地进行加减。
在其中一个实施例中，所述放线信号包括智能放线信号；所述放线机构包括用于控制所述打草绳进行自动放线的智能放线机构，当所述打草机工作过程中所述打草绳伸出所述出线孔的长度磨损变短时，所述智能放线机构感应到所述打草绳磨损变短之后的离心力变化而启动自动放线并产生所述智能放线信号。
在其中一个实施例中，所述放线信号包括智能放线信号；所述打草机内设置有用于控制所述打草绳进行自动放线的智能放线系统，所述智能放线系统对 反映当前所述打草绳长度的特定参数与预设参数进行比较，并根据所述比较结果产生所述智能放线信号。
在其中一个实施例中，所述计算单元用于直接根据所述智能放线信号对所述打草绳的已用量和/或剩余量进行计数。
在其中一个实施例中，所述打草机还包括启动开关，所述启动开关配置为根据用户操作产生启动信号，以控制所述马达启动或关闭；所述计算单元还用于根据所述智能放线信号对所述打草绳的已用量和/或剩余量进行计算，所述计算单元还用于根据所述启动信号对所述打草绳的已用量和/或剩余量进行计算。
在其中一个实施例中，所述智能放线系统包括检测模块及其内存储有所述预设参数的控制器，所述检测模块用于检测反映所述打草绳长度的所述特定参数，所述控制器用于将检测的所述特定参数与所述预设参数进行比较，并根据所述比较结果选择性输出所述智能放线信号，所述放线机构根据所述智能放线信号选择性启动并释放所述打草绳。
在其中一个实施例中，所述特定参数包括所述打草机的工作电流值，所述预设参数包括预设电流值，所述控制器将所述工作电流值与所述预设电流值进行比较，若所述工作电流值小于所述预设电流值，所述控制器输出所述智能放线信号启动放线机构。
在其中一个实施例中，所述特定参数包括所述打草机的驱动电压，所述控制器通过所述驱动电压计算得到所述预设电流值。
在其中一个实施例中，所述智能放线系统包括检测模块及控制器，所述检测模块包括霍尔传感器，所述打草绳具有磁性；所述控制器在所述霍尔传感器检测不到所述打草绳的磁性信号时输出所述智能放线信号启动放线机构以放线。
在其中一个实施例中，所述智能放线系统包括检测模块及控制器，所述检测模块包括能够识别所述打草绳颜色的颜色识别传感器，所述控制器当所述颜色识别传感器识别不到所述打草绳的颜色时输出所述智能放线信号启动放线机构以放线。
在其中一个实施例中，所述放线信号包括敲击放线信号，所述打草头包括敲击头，所述敲击头可操作的在第一位置和第二位置之间移动以启动所述放线 机构释放所述打草线，当所述敲击头在所述第一位置和所述第二位置之间移动时产生所述敲击放线信号，所述计算单元根据所述敲击放线信号对所述打草绳的已用量和/剩余量进行计算。
在其中一个实施例中，所述打草机还包括检测机构，所述放线信号还包括当所述检测机构检测到所述打草绳穿出所述线盒外的长度增加时所发出的直接放线信号，所述计算单元还用于根据所述直接放线信号对所述打草绳的已用量和/或剩余量进行计算。
在其中一个实施例中，所述打草机还包括检测机构，所述储线器包括线盒和收容在所述线盒中的绕线盘，所述打草绳缠绕在所述绕线盘上，所述放线信号还包括当所述检测机构检测到所述绕线盘与所述线盒发生相对旋转时发出的直接放线信号，所述计算单元还用于根据所述直接放线信号对所述打草绳的已用量和/或剩余量进行计算。
在其中一个实施例中，所述马达为无刷电机。
附图说明
图1为本公开实施例一实施例打草机整机结构的剖视图；
图2为图1所示的打草机的打草头部分结构示意图；
图3为图1所示打草机的模块示意图。
图4为本公开实施例另一实施例所示打草机的模块示意图。
具体实施方式
为了便于理解本公开实施例，下面将参照相关附图对本公开实施例进行更全面的描述。附图中给出了本公开实施例的较佳实施例。但是，本公开实施例可以以许多不同的形式来实现，并不限于本文所描述的实施例。相反地，提供这些实施例的目的是使对本公开实施例的公开内容的理解更加透彻全面。
需要说明的是，当元件被称为“固定于”另一个元件，它可以直接在另一个元件上或者也可以存在居中的元件。当一个元件被认为是“连接”另一个元件，它可以是直接连接到另一个元件或者可能同时存在居中元件。
除非另有定义，本文所使用的所有的技术和科学术语与属于本公开实施例的技术领域的技术人员通常理解的含义相同。本文中在本公开实施例的说明书中所使用的术语只是为了描述具体的实施例的目的，不是旨在于限制本公开实施例。本文所使用的术语“及/或”包括一个或多个相关的所列项目的任意的和所有的组合。
请参照图1和图2，本公开实施例的较佳实施例中，打草机100包括壳体10、马达20、由马达20驱动旋转的打草头110，计算单元50，储线器、收容在储线器内的打草绳45(请参看图3)。具体的，储线器包括线盒40和收容在所述线盒40中的绕线盘43，打草绳45缠绕于绕线盘43上，打草头110包括出线孔，打草绳45从出线孔穿出，马达20设置于壳体10内且具有输出轴21，用于提供驱动动力，马达带动打草头110旋转，从而带动打草绳45伸出出线孔的长度旋转进行切割工作。本实施例中，线盒40内固定设置有定位柱41、活动套设于定位柱41上的绕线盘43以及打草绳45，输出轴21通过定位柱41与线盒40传动连接，打草绳45的一端卷绕于绕线盘43上，打草绳45的另一端穿出线盒40。打草机100还包括放线机构，放线机构能够释放所述打草绳45，以增加打草绳45穿出出线孔外的长度，计算单元50用于响应放线信号对打草绳45的已用量和/或剩余量进行计算，打草机100还包括提醒单元，提醒单元用于根据计算单元50统计的打草绳45的已用量和/或剩余量发出提醒信号提醒用户。
提醒单元包括显示器52，显示器52用于显示打草绳45的已用量和/或剩余量，以使用户可以实时的了解打草线的使用情况。具体的，显示器52可以实时显示打草绳45的已用量和/或剩余量，当然为了节省能量，显示器也可不实时的显示，只有当计算单元50统计的打草绳45的剩余量低于第一预设值时，或计算单元50统计的打草绳45的已用量超过第二预设值时，显示器才显示打草绳的已用量和/或剩余量，从而提醒用户打草绳的剩余量已不足。
优选的，提醒单元还包括报警器56，当计算单元50统计的打草绳45的剩余量低于第一预设值时，或计算单元50统计的打草绳45的已用量超过第二预设值时，报警器56发出报警信号提醒用户打草绳45的剩余量已不足。当然，提醒单元也可仅包括报警器56，而不设置显示器52。优选的，第一预设值的取 值范围是打草绳45初始总量的5％-15％，或者第一预设值是能够使放线机构执行放线25-50次的量，第二预设值的取值范围是打草绳45初始总量的85％-95％，这样设置，使得用户可以在不影响下一次工作前提前得知打草线已不足，并提前准备备用打草绳。由于，用户每次打草工作一般持续30min，每次大约执行25次放线，也就是说为了不影响下一次打草工作，需要在下一次打草工作前提醒用户剩余量已不足，这样设置可以保证不会影响这一次的打草工作。
在另一实施例中，所述提醒单元还包括无线传输模块，无线传输模块将计算单元50统计的打草绳45的已用量和/或剩余量传输至用户手机客户端，并提醒用户及时购买打草绳。具体的，无线传输模块将最近一次使用后打草绳45的已用量和/或剩余量传输至用户手机客户端，用户在下一次使用打草机工作前可先查阅手机客户端查看打草绳的已用量和/或剩余量，可以提前准备购买打草绳和线盘，优选的，无线传输模块传输至用户手机客户端的数据还包括购买打草绳的网址或者附近的可以买到打草绳的购物店。
本实施例中，打草机100还包括延伸杆22，线盒40设置于延伸杆20的一端，并且设置于打草头110内，当打草头110旋转时带动线盒40一起旋转，当然线盒40也可以设置在打草头110外，绕线盘43收容在线盒40里面，打草线从线盒40引出，并自打草头110上的出线孔伸出。壳体10还包括设置在延伸杆20的另一端的手柄，具体的，手柄包括主手柄23和辅助手柄24，如此设置，操作者能够通过主手柄23和辅助手柄24更可靠的提起并操作打草机工作。
本实施例中，放线机构能够根据放线信号根据使绕线盘43与线盒40相对旋转以释放打草绳45，增加打草绳45穿出出线孔的长度。具体的，放线机构响应每个放线信号而启动以释放打草绳45，当放线机构接收到一个放线信号时，放线机构启动一次，打草绳45穿出所述出线孔的长度增加一次，所述计算单元根据放线信号的次数统计所述打草绳的已用量和/或剩余量。可以理解的，打草绳的已用量和/或剩余量可以是打草机已经进行的放线次数和/或剩余的可放线的次数，当然也可以是打草绳的已用长度和/或剩余长度。也就是说，针对特定的打草机每次放线机构启动时放出的打草线长度基本相同，当打草绳的初始总长度一定的情况下，能够根据打草绳的初始总长度和每次放出打草线的长度计 算出能够执行的放线次数，当然也可以将初始的打草绳换算成能够执行的放线总次数，计算单元50用于对每次放线信号进行统计，以计算打草绳的已用次数和/或剩余次数，计算单元也可以根据放线信号的次数计算放出的总的打草绳的长度，从而计算打草绳的已用长度和/或剩余长度。
请参照图2和图3，在其中一个实施例中，打草机100包括设置于壳体10上的控制开关30，控制开关30用于根据用户操作产生放线信号。其中，控制开关30包括启动开关31，放线信号包括启动信号。启动开关31用于根据用户操作产生启动信号，放线机构根据启动信号释放打草绳45，计算单元50用于根据启动信号对打草绳45的已用量和/或剩余量进行计算。也就是说，在使用打草机100时，当用户按压启动开关31后，马达20在启动开关31产生的启动信号后开始工作，同时，打草绳45由线盒40中自动放出，即进行了一次放线。此时，计算单元50对应地根据上述启动信号对打草绳45的已用量和/或剩余量进行了一次计算。
在另一个实施例中，为了能够实现不中断打草机的正常工作而进行打草线的释放，控制开关30还包括手动放线开关33，对应地，放线信号包括手动放线信号。手动放线开关33用于根据用户操作产生手动放线信号，放线机构根据手动放线信号释放打草绳45。这样用户在正常打草过程中，可根据需要自己控制是否放线，放线可靠。
本该施例中，放线机构包括至少一个放线电性开关以及控制装置，放线电性开关根据手动放线开关33的操作信号选择性启动所述控制装置使绕线盘43处于能与所述线盒40之间产生旋转速度差的第二状态，从而释放打草线。具体的，控制装置包括马达20，在其他实施例中，控制装置还可以包括其他驱动装置，如电磁铁或者独立于马达20的次马达，只要驱动能使绕线盘43与线盒40之间的处于产生旋转速度差的第二状态都应该在本公开实施例的保护范围之内。
在该实施例中，控制装置还包括与马达20电性连接的控制电路，该控制电路用于控制马达20运转时的转速变化，使马达20在放线速度和工作速度之间转换，从而实现放线。控制电路优选采用刹车开关电路，放线电性开关优选采用单刀双掷开关，启动手动放线开关33，放线电性开关闭合，马达20短路，马达20的转速瞬间降至为零，绕线盘43相对线盒40旋转，打草线被放出，释放 手动放线开关33，马达恢复至工作速度，绕线盘43与线盒40恢复相对静止的第一状态。在其他实施例中，放线电性开关可以是Mosfet开关，手动放线开关33可操作的产生手动放线信号，打草机还包括控制器，控制器根据手动放线信号控制Mosfet开关导通或断开，从而使马达短路，绕线盘43与线盒40之间的产生旋转速度差以释放打草绳。
放线电性开关并不局限于上述形式，放线电性开关可以是机械开关也可以是电子开关，只要能在电子信号或机械控制下实现线路断开和闭合的其他电子元器件构造都应当涵盖在本公开实施例内。
在上述两种具体实施方式的情况下，将会有以下两种放线以及对应的计算形式：
第一种，在使用过程中，当启动开关31被启动后，启动开关31将产生与上述实施例中相同的启动信号，放线信号包括启动信号，马达20被启动，放线机构根据启动信号释放打草绳45，计算单元50根据启动信号对打草绳45的已用量和/或剩余量进行了一次计算。
若在启动后因对打草绳45长度不满意而需要中途对打草绳进行再次放线时，用户只需触发手动放线开关33，马达20短路，马达20降速至零，绕线盘43相对线盒40产生速度差，打草绳45在原有基础上被放线；释放手动放线开关33或者经过设置时间，马达20转速恢复，绕线盘43与线盒40恢复同步旋转。由于该操作都是在正常工作中进行放线，也就是说，在不打断切割工作的同时，选择启动手动放线开关33即可进行放线，操作方便，无需对打草机100整机进行重新启动，从而大大节省用户再次放线的等待时间。
此时，计算单元50根据手动放线信号对打草绳45的已用量和/或剩余量进行了再一次计算，即整个过程中，打草绳45被放线两次，对应的计算单元50进行了两次计算。
第二种，在使用过程中，当启动开关31被启动后，启动开关31仅产生启动信号，线盒40不响应于启动开关31的操作，打草绳45未被放线，对应地计算单元50并不会对打草绳45的已用量和/或剩余量进行计算。而当用户在使用过程中启动手动放线开关33时，打草绳45才会被手动放线，计算单元50亦会对应地根据手动放线信号对打草绳45的已用量和/或剩余量进行一次计算。这 样设置，避免了每次操作启动开关31对打草机进行开关机控制时打草线的释放，避免打草线的浪费。
通过上述设置，保证计算单元50对打草绳45的已用量和/或剩余量进行准确计算，以方便用户准确了解当前打草绳45的具体使用情况。
在本具体实施例中，马达20前置于壳体10内，且控制开关30与马达20电连接，以根据用户按压操作控制马达20的启动与关闭，亦可同时根据用户操作产生放线信号。可以理解地，在其它一些实施例中，马达20亦可后置于壳体10内，控制开关30仅用于产生放线信号，对应地马达20的启动与关闭控制可由额外设置的开关进行操作，在此不作限定。
在另一实施例中，放线机构包括用于控制所述打草绳45进行自动放线的智能放线机构，当打草机100工作过程中打草绳45伸出所述出线孔的长度磨损变短时，所述智能放线机构感应到所述打草绳磨损变短之后的离心力变化而启动自动放线并产生智能放线信号。具体的，智能放线机构包括设置在打草头110内的放线器，当打草头110被驱动旋转时，由于放线器产生一个与打草绳旋转离心力相平衡的离心力，当打草绳磨损变短后，放线器的离心力大于打草绳的离心力，放线器动作，智能放线机构启动，打草线被放出并产生智能放线信号。更具体的，智能放线信号由放线器的动作所触发，本实施例中，放线器上设置有接近开关，当放线器由第一位置移动至第二位置，接近开关闭合，智能放线信号被发出。当然，智能放线信号的发出也可不同过接近开关，采用其他方式，比如在放线器上触发件，线盒上设置霍尔传感器，当放线器由第一位置移动至第二位置，霍尔传感器被触发，发出智能放线信号，计算单元根据智能放线信号对打草绳45的已用量和/或剩余量进行一次计算。
在另一实施例中，控制开关30仅包括启动开关31，启动开关31用于根据用户操作产生启动信号，以启动打草机100。启动开关31用于根据用户操作产生启动信号，放线信号包括启动信号，放线机构根据启动信号释放打草绳45，计算单元50用于根据启动信号对打草绳45的已用量和/或剩余量进行计算。放线信号还包括智能放线信号。对应地，打草机100内设置有用于控制打草绳45进行启动操作的智能放线系统60，智能放线系统60对反映当前打草绳45长度 的特定参数与预设参数进行比较，并根据比较结果产生智能放线信号，以进行启动控制。此时，计算单元50用于直接根据智能放线信号对打草绳45的已用量和/或剩余量进行计算，计算单元50还用于直接根据启动信号对打草绳45的已用量和/或剩余量进行计算。可以理解的，放线信号也可仅包括智能放线信号，启动开关31仅产生启动信号，放线机构并不响应于启动信号，计算单元50并不根据启动信号对打草绳45的已用量和/或剩余量进行计算，计算单元50仅用于直接根据智能放线信号对打草绳45的已用量和/或剩余量进行计算。
具体地，智能放线系统60包括检测模块及其内存储有预设参数的控制器，检测模块用于检测反映打草绳45长度的特定参数，控制器用于将检测的特定参数与预设参数进行比较，并根据比较结果输出智能放线信号，以选择性启动并释放打草绳45。
在其中一个实施例中，检测模块检测的特定参数包括打草机的工作电流值，其中在相同工作条件下，即驱动电压不变，负载越大工作电流值越大。具体为在打草机空载的情况下，打草长度越长，打草机工作电流值越大，当打草长度因磨损变短，打草机的工作电流变小。也就是说，通过计算出磨损设定长度打草绳的工作电流值作为预设电流值(即预设参数)，将正常工作时检测的工作电流值与预设电流值进行比较，若实时检测的工作电流值小于预设电流值，那么可以判断打草绳的磨损达到或超过设定长度，此时控制器输出智能放线信号，控制打草绳45由线盒40中自动放出，即进行了一次放线。优选的，以打草机空载情况下测得磨损设定长度打草绳的工作电流作为预设电流值。
具体地，检测模块检测打草机100的驱动电压(即打草机100中电池包两端输出的电压或者马达20两端的电压)，并通过驱动电压计算得到预设电流值。其中，检测模块检测驱动电压通过实时采样的方式，也可通过周期、间歇或者其他检测方式，在此不作限定。此外，由于电池包中锂电池特性决定了输入电压并非定值，电压随着放电时间的增加而逐渐降低。因此在相同负载下，当打草绳长度一定时，不同的驱动电压所需要的工作电流也是不同的，也就是说预设电流值会随着驱动电压的不同而变化，具体呈一一对应的关系，即一个驱动电压只对应一个预设电流值。
控制器预先存储有驱动电压与磨损设定长度打草绳的工作电流的变化关系，控制器首先通过检测模块检测的驱动电压计算得到预设电流值，然后将实时检测的工作电流值与预设电流值进行比较，若实时检测的工作电流值小于预设电流值，那么可以判断打草绳的磨损达到或超过设定长度，此时控制器输出智能放线信号，控制打草绳45由线盒40中自动放出，即进行了一次放线。在其他实施例中，检测模块不检测电压也可，只要在输出电源上设置一个稳压模块，使马达20或者电池包两端的电压稳定在一个确定的数值上，通过稳定的电压计算出预设电流值，将正常工作时检测的工作电流值与预设电流值进行比较，若检测的电流小于预设电流，控制器输出智能放线信号启动放线。本公开实施例还提供一种可选的实施方案，检测模块包括霍尔传感器，打草绳具有磁性，当打草绳经过霍尔传感器的感应范围，霍尔传感器感应到打草绳的磁性，当打草绳磨损达到或超过设定长度，霍尔传感器检测不到打草绳的磁性信号，控制器输出智能放线信号启动放线。
本公开实施例还提供一种可选的实施方案，检测模块包括颜色识别传感器，颜色识别传感器能够识别打草绳的颜色，当打草绳磨损达到或超过设定长度，颜色识别传感器识别不到打草绳的颜色，控制器根据颜色识别传感器的信号，输出智能放线信号启动放线。在上述智能放线系统中，控制器输出智能放线信号启动放线操作后，本公开实施例还提供一种可选的实施方案，打草机100还包括设置在壳体10上的断线刀片，断线刀片用于当打草绳45的放线长度超过目标长度时，截断打草绳45，使打草绳45的打草长度维持在一个较安全合理的范围内。检测模块包括震动传感器，优选的，震动传感器设置在断线刀片处。
当打草绳45的放线长度超过目标长度，打草绳45的自由末端碰到断线刀片而被切断，震动传感器感应到打草绳45的自由末端被切断时输出停止放线信号，控制器识别停止放线信号并停止放线。在其他实施例中，震动传感器可以设置在壳体10处，只要震动传感器的设置能感应到震动都应涵盖在本公开实施例的保护范围之内。
在另一实施例中，放线信号包括敲击放线信号，打草头110包括敲击头，敲击头可操作的在第一位置和第二位置之间移动以使放线机构启动释放打草线 45，当敲击头在第一位置和第二位置之间移动时产生敲击放线信号，计算单元根据敲击放线信号对打草绳的已用量和/剩余量进行计算。具体的，敲击头上设置有触发件，敲击头与线盒之间设置有复位弹簧，弹簧自由状态下，敲击头位于第一位置，将敲击头碰撞地面，敲击头克服弹簧弹力移动至第二位置，打草头的线盒上设置有接近开关，当敲击头由第一位置移动至第二位置，接近开关闭合，从而产生敲击放线信号，当敲击头在弹簧弹性作用下由第二位置恢复至第一位置，放线机构完成一次放线，接近开关闭合一次，产生一次敲击放线信号。可以理解的，敲击放线信号可不限于采用接近开关产生，也可以通过磁性信号或者压力信号来产生。
在其他实施方式中，放线信号可以是其他形式，比如直接在线盒上设置检测打草绳伸出线盒外的长度是否增加的检测机构，检测机构每次检测到打草绳伸出线盒外的长度增加时发出直接放线信号，计算单元50根据检测机构检测的直接放线信号对打草绳45的已用量和/或剩余量进行计算。优选的，为了防止由于线圈松散导致的打草绳伸出线盒外的长度增加而导致的计算单元50错误的计算，检测机构根据检测的打草绳伸出线盒外的长度增加设定长度以上时发出直接放线信号，这样防止了假性放线对计算单元50的影响，确保了计算单元的可靠性。
在另一种实施方式中，检测机构可以检测绕线盘43与线盒40之间是否产生相对旋转，当检测机构检测到绕线盘43与线盒40之间产生相对旋转时发出直接放线信号，计算单元50根据检测机构检测的直接放线信号对打草绳45的已用量和/或剩余量进行计算。也就是说，放线信号并不局限于上述实施例的具体形式，只要其通过间接或直接获得打草线是否被放出的信号都应涵盖在本公开实施例的保护范围内。
计算单元50包括计算器51和复位开关53。本实施例中，计算器51与控制开关30连接，以对打草绳45已用量进行计算，并通过显示器52显示。复位开关53用于对计算器51进行清零复位。在本具体实施例中，当上一卷打草绳45用完毕并更换上新一卷打草绳45时，用户可通过复位开关53对计算器51的量清零，以便对新一卷打草绳45的已用量进行重新计算。当然复位开关53也可 不通过用户操作而自动复位，复位开关53设置在线盒上，当新的一卷打草绳45装入线盒40时触发复位开关自动复位，这样不需要人工复位，更加智能。
进一步地，计算单元50包括存储器54、处理器55。其中，存储器54用于储存打草机100所使用的打草绳45可使用的初始总量，亦即每一卷未使用的打草绳45所默认的可使用的总量。由于不同型号打草机100内线盒40的存储空间不相同，其所使用的打草绳45型号对应不同，且对于不同型号的打草绳45，其总绳长及在进行打草工作时打草绳45的单次放线长度值亦存在差异，使得不同型号打草机100内不同型号的打草绳45可使用的初始总量将存在一定差异。因此，储存于存储器53内的打草绳45可使用的初始总量可在出厂时预先存储。
处理器55用于获取并计算打草绳45可使用的总量和已用量的差值，并当差值小于或等于预设值时产生提示信号，报警器56用于根据提示信号发出报警提示，表明打草机100内现有打草绳45即将被使用完，以提醒操作者及时更换。其中，报警器56所发出的报警提示可采用提示音(例如，蜂鸣声)、提示灯等多种方式，在此不作限定。
在其中另一实施例中，复位开关53用于对计算器51中打草绳45当前可使用的量进行复位，计算器51用于在复位后根据控制开关30的放线信号对打草绳45的剩余量进行计算。具体地，计算器51在每次控制开关30被按压后对打草绳45可使用的初始总量进行减一，以对打草绳45的剩余量进行计算。
对应地，处理器55用于获取打草绳45的剩余量，并当打草绳45的剩余量小于或等于第一预设值时产生提示信号，报警器56用于根据提示信号发出报警提示，表明打草机100内现有打草绳45即将被使用完，以提醒操作者及时更换。其中，报警器56所发出的报警提示可采用提示音(例如，蜂鸣声)、提示灯等多种方式，在此不作限定。
此外，计算器51为机械计算器或电子计算器。当计算器51为机械计算器时，计算器51包括与控制开关30联动的拨动开关(图未示)。拨动开关在控制开关30被按压后联动开启，并对打草绳45的已用量和剩余量对应地进行加减。具体的，所述计算单元50包括与启动开关31联动的拨动开关，拨动开关在启动开关31被按压后联动开启，计算器51根据拨动开关的开启信号对所述打草 绳的已用量和剩余量对应地进行加减，当采用手动放线开关33时，拨动开关与手动放线开关33和/或启动开关联动，拨动开关在手动放线开关33和或启动开关被按压后联动开启，计算器51根据拨动开关的启动信号对打草绳45的已用量和剩余量对应地进行加减。当计算器51为电子计算器时，计算器51用于接收控制开关30的启动信号被触发，并对打草绳45的已用量和剩余量对应地进行加减。
本实施例中，显示器52设置在打草机壳体10上，比如设置在手柄23上或邻近位置，当然也可以设置在辅助手柄上，并不局限于上述位置，只要显示器设置的位置方便操作者看到即可。
本实施例中，马达20优选为无刷电机，由于无刷电机本身具有控制板，放线信号可直接通过控制板进行采集或计算，而不需要单独设置计算单元或检测机构，可以降低整机成本。
本公开实施例打草机100中设置有用于对打草绳45已用量和/或剩余量进行计算，如此在当前打草机100内打草绳45可使用量较少时，以提醒用户及时进行更换，减少在使用过程中因打草绳45已用完而误时误工。
以上所述实施例仅表达了本公开实施例的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对本公开实施例专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本公开实施例构思的前提下，还可以做出若干变形和改进，这些都属于本公开实施例的保护范围。因此，本公开实施例专利的保护范围应以所附权利要求为准。

Claims (31)

  1. 一种打草机，其特征在于：包括：
    壳体；
    储线器，用于收容打草绳；
    打草头，具有出线孔，所述打草绳从所述出线孔穿出；
    马达，用于驱动所述打草头旋转，以带动所述打草绳穿出所述出线孔的长度进行切割工作；
    放线机构，能够释放所述打草绳，增加所述打草绳穿出所述出线孔的长度；以及
    计算单元，所述计算单元用于响应放线信号对所述打草绳的已用量和/或剩余量进行统计；
    提醒单元，所述提醒单元用于根据所述计算单元统计的所述打草绳的已用量和/或剩余量发出提醒信号提醒用户。
  2. 如权利要求1所述的打草机，其特征在于：所述提醒单元包括显示器，所述显示器用于显示所述打草绳的已用量和/或剩余量。
  3. 如权利要求2所述的打草机，其特征在于：所述提醒单元包括显示器，当所述计算单元统计的所述打草绳的剩余量低于第一预设值时，或所述计算单元统计的所述打草绳的已用量超过第二预设值时，所述显示器输出显示结果提醒用户所述打草绳的剩余量已不足。
  4. 如权利要求1或2所述的打草机，其特征在于：所述提醒单元包括报警器，当所述计算单元统计的所述打草绳的剩余量低于第一预设值时，或所述计算单元统计的所述打草绳的已用量超过第二预设值时，所述报警器发出报警信号提醒用户所述打草绳的剩余量已不足。
  5. 如权利要求4所述的打草机，其特征在于：所述第一预设值的取值范围是所述打草绳初始总量的5％-15％，或者所述第一预设值是能够使放线机构执行放线25-50次的量。
  6. 如权利要求4所述的打草机，其特征在于：所述第二预设值的取值范围是所述打草绳初始总量的85％-95％。
  7. 如权利要求4所述的打草机，其特征在于：所述提醒单元还包括无线传 输模块，所述无线传输模块将所述计算单元最近一次统计的所述打草绳的已用量和/或剩余量传输至用户手机客户端。
  8. 如权利要求1所述的打草机，其特征在于：所述计算单元包括计算器及复位开关，所述计算器可根据所述放线信号对所述打草绳的已用量进行计算，所述复位开关用于在对所述计算器进行清零复位。
  9. 如权利要求8所述的打草机，其特征在于：所述计算单元还包括存储器和处理器，所述存储器用于储存所述打草绳可使用的初始总量，所述处理器用于获取所述初始总量并计算所述初始总量和所述打草绳的已用量的差值，并当所述差值小于或等于预设值时发出提示信号，所述提醒单元用于根据所述提示信号发出所述提醒信号。
  10. 如权利要求1所述的打草机，其特征在于：所述计算单元包括计算器及复位开关，所述计算器用于根据所述放线信号对所述打草绳的剩余量进行计算，所述复位开关用于对所述计算器中所述打草绳的剩余量进行复位。
  11. 如权利要求10所述的打草机，其特征在于：所述计算单元包括存储器和处理器，所述存储器用于储存所述打草绳可使用的初始总量，所述处理器用于获取所述打草绳的剩余量，并当所述打草绳的剩余量小于或等于预设值时产生提示信号，所述提醒单元用于根据所述提示信号发出所述提醒信号。
  12. 如权利要求1所述的打草机，其特征在于：所述放线机构响应所述每个放线信号而启动以释放所述打草绳，当所述放线机构接收到一个所述放线信号，所述放线机构启动一次，所述打草绳穿出所述出线孔的长度增加一次，所述计算单元根据所述放线信号的次数统计所述打草绳的已用量和/或剩余量。
  13. 如权利要求12所述的打草机，其特征在于：所述打草机还包括启动开关，所述启动开关配置为根据用户操作产生启动信号，以控制所述马达启动或关闭；所述放线信号包括所述启动信号，所述放线机构根据所述启动信号释放所述打草绳，所述计算单元用于根据所述启动信号对所述打草绳的已用量和/或剩余量进行计算。
  14. 如权利要求13所述的打草机，其特征在于：所述计算单元包括与所述启动开关联动的拨动开关，所述拨动开关在所述启动开关被按压后联动开启， 所述计算单元根据所述拨动开关的开启信号对所述打草绳的已用量和剩余量对应地进行加减。
  15. 如权利要求13所述的打草机，其特征在于：所述打草机还包括手动放线开关，所述放线信号还包括手动放线信号；所述手动放线开关用于根据用户操作产生所述手动放线信号，所述放线机构根据所述手动放线信号释放所述打草绳，所述计算单元还用于根据所述手动放线信号对所述打草绳的已用量和/或剩余量进行计算。
  16. 如权利要求15所述的打草机，其特征在于：所述计算单元包括与所述启动开关和所述手动放线开关联动的拨动开关，所述拨动开关在所述启动开关或所述手动放线开关被按压后联动开启，所述计算单元根据所述拨动开关的开启信号对所述打草绳的已用量和剩余量对应地进行加减。
  17. 如权利要求12所述的打草机，其特征在于：所述打草机还包括手动放线开关，所述放线信号包括手动放线信号；所述手动放线开关根据用户操作时产生所述手动放线信号，所述放线机构根据所述手动放线信号释放所述打草绳，所述计算单元用于根据所述手动放线信号对所述打草绳的已用量和/或剩余量进行计算。
  18. 如权利要求17所述的打草机，其特征在于：所述计算单元包括与所述手动放线开关联动的拨动开关，所述拨动开关在所述手动放线开关被按压后联动开启，所述计算单元根据所述拨动开关的启动信号对所述打草绳的已用量和剩余量对应地进行加减。
  19. 如权利要求12所述的打草机，其特征在于：所述放线信号包括智能放线信号；所述放线机构包括用于控制所述打草绳进行自动放线的智能放线机构，当所述打草机工作过程中所述打草绳伸出所述出线孔的长度磨损变短时，所述智能放线机构感应到所述打草绳磨损变短之后的离心力变化而启动自动放线并产生所述智能放线信号。
  20. 如权利要求12所述的打草机，其特征在于：所述放线信号包括智能放线信号；所述打草机内设置有用于控制所述打草绳进行自动放线的智能放线系统，所述智能放线系统对反映当前所述打草绳长度的特定参数与预设参数进行 比较，并根据所述比较结果产生所述智能放线信号。
  21. 如权利要求19或20所述的打草机，其特征在于：所述计算单元用于直接根据所述智能放线信号对所述打草绳的已用量和/或剩余量进行计数。
  22. 如权利要求21所述的打草机，其特征在于：所述打草机还包括启动开关，所述启动开关配置为根据用户操作产生启动信号，以控制所述马达启动或关闭；所述计算单元还用于根据所述智能放线信号对所述打草绳的已用量和/或剩余量进行计算，所述计算单元还用于根据所述启动信号对所述打草绳的已用量和/或剩余量进行计算。
  23. 如权利要求20所述的打草机，其特征在于：所述智能放线系统包括检测模块及其内存储有所述预设参数的控制器，所述检测模块用于检测反映所述打草绳长度的所述特定参数，所述控制器用于将检测的所述特定参数与所述预设参数进行比较，并根据所述比较结果选择性输出所述智能放线信号，所述放线机构根据所述智能放线信号选择性启动并释放所述打草绳。
  24. 如权利要求23所述的打草机，其特征在于：所述特定参数包括所述打草机的工作电流值，所述预设参数包括预设电流值，所述控制器将所述工作电流值与所述预设电流值进行比较，若所述工作电流值小于所述预设电流值，所述控制器输出所述智能放线信号启动放线机构。
  25. 如权利要求24所述的打草机，其特征在于：所述特定参数包括所述打草机的驱动电压，所述控制器通过所述驱动电压计算得到所述预设电流值。
  26. 如权利要求20所述的打草机，其特征在于：所述智能放线系统包括检测模块及控制器，所述检测模块包括霍尔传感器，所述打草绳具有磁性；所述控制器在所述霍尔传感器检测不到所述打草绳的磁性信号时输出所述智能放线信号启动放线机构以放线。
  27. 如权利要求20所述的打草机，其特征在于：所述智能放线系统包括检测模块及控制器，所述检测模块包括能够识别所述打草绳颜色的颜色识别传感器，所述控制器当所述颜色识别传感器识别不到所述打草绳的颜色时输出所述智能放线信号启动放线机构以放线。
  28. 如权利要求12所述的打草机，其特征在于：所述放线信号包括敲击放 线信号，所述打草头包括敲击头，所述敲击头可操作的在第一位置和第二位置之间移动以启动所述放线机构释放所述打草线，当所述敲击头在所述第一位置和所述第二位置之间移动时产生所述敲击放线信号，所述计算单元根据所述敲击放线信号对所述打草绳的已用量和/剩余量进行计算。
  29. 如权利要求1所述的打草机，其特征在于：所述打草机还包括检测机构，所述放线信号还包括当所述检测机构检测到所述打草绳穿出所述线盒外的长度增加时所发出的直接放线信号，所述计算单元还用于根据所述直接放线信号对所述打草绳的已用量和/或剩余量进行计算。
  30. 如权利要求1所述的打草机，其特征在于：所述打草机还包括检测机构，所述储线器包括线盒和收容在所述线盒中的绕线盘，所述打草绳缠绕在所述绕线盘上，所述放线信号还包括当所述检测机构检测到所述绕线盘与所述线盒发生相对旋转时发出的直接放线信号，所述计算单元还用于根据所述直接放线信号对所述打草绳的已用量和/或剩余量进行计算。
  31. 如权利要求1所述的打草机，其特征在于：所述马达为无刷电机。
PCT/CN2017/114836 2016-12-06 2017-12-06 打草机 Ceased WO2018103666A1 (zh)

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