JPH0352780Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention is installed in, for example, a power sprayer set (a set of a power sprayer and a hose reel), etc., and is operated by remote control commands from a transmitter. The present invention relates to a hose winding device that is operated, and more particularly to a hose winding device that can send a hose winding command and a hose reel braking command from a transmitter to a receiver through one channel.

[Conventional technology]

When a spray nozzle is attached to the tip of the spray hose pulled out from the hose reel of a power sprayer set and the pesticide is sprayed from the spray nozzle, the length of the spray hose can reach 100 to 150 m, making it difficult for operators to It is troublesome to have to go all the way back to the power sprayer set and operate the hose winding switch in order to wind up the spray hose onto the hose reel.

In addition, a conventional power sprayer set (eg.
No. 115304) was not provided with a brake means 80 for restraining the rotation of the hose reel. Therefore, when unwinding the spray hose from the hose reel, even after the unwinding of the spray hose is stopped,
Alternatively, when winding the spray hose onto a hose reel, the hose reel continues to rotate due to inertia even after the engine has stopped rotating the hose reel, and there is no need to pull out the spray hose from the hose reel. The reel rotates freely and the spray hose can come loose within the hose reel or become entangled with parts of the hose reel, creating the risk of damage and accidents.

[Problem that the invention attempts to solve]

For this reason, in Utility Application No. 185063 (filed on December 2, 1988), etc., an electromagnetic clutch is proposed that connects and disconnects the transmission system that transmits the rotational power from the engine to the hose reel to wind up the spray hose onto the hose reel. and a brake means (for example, an electromagnetic brake) for restraining the rotation of the hose reel of the power sprayer set, and the electromagnetic clutch and brake means are controlled by a remote control command from a transmitter.

In the example of the Utility Application No. 185063/1983, the fifth
As shown in the figure, an electromagnetic clutch 76 that controls the connection/disconnection of transmission of rotational power from the prime mover to the hose reel, and an electromagnetic brake 80 that serves as a brake means for restraining the rotation of the hose reel are connected to separate outputs of the receiver 38. connected to the terminal. In order to send a remote control command from the transmitter 48 to the receiver 38, the remote control command for the electromagnetic clutch 76 and the remote control command for the electromagnetic brake 80 are transmitted using separate channels, and two channels are required. Therefore, the transmitter 48 and receiver 38 are expensive.

This device simplifies the device by transmitting remote control commands for controlling the connection and disconnection of the electromagnetic clutch and remote control commands for controlling the activation and deactivation of the brake means from the transmitter to the receiver through one channel. It is an object of the present invention to provide a hose winding device that is capable of reducing winding speed and cost.

[Means for solving problems]

The hose winding device of this invention will be explained using drawings corresponding to embodiments. The hose reel 20 is wound with the hose 18, the braking means 80 puts the hose reel 20 in a non-braking state and a braking state in an energized state and a de-energized state, respectively, and the electromagnetic clutch 76 puts the hose reel 20 in a non-braking state and a braking state, respectively, in an energized state and a de-energized state. The rotational power from the hose reel 20 to the hose reel 20 is placed in a transmission state and a non-transmission state. receiver 38
has an output terminal 102 to which a constant voltage is applied according to a remote control command from the transmitter 48; the output terminal 102 of the receiver 38 is connected to the electromagnetic clutch 76, and
2 to the brake means 80 via a one-way current passing element 104 that only allows current to flow from the brake means 80 to the brake means 80. The detection switch 92 detects the withdrawal of the hose 18 from the hose reel 20 and makes the brake means 80 energized during the withdrawal period.

[Effect]

The detection switch 92 detects whether or not the hose 18 is being pulled out from the hose reel 20. During the period when the hose 18 is being pulled out from the hose reel 20, the brake means 80 is energized and does not restrict rotation of the hose reel 20. Further, the one-way current passing element 104 is connected to the brake means 8.
0 to the electromagnetic clutch 76, the electromagnetic clutch 76 is held in a de-energized state even when the brake means 80 is energized.
The hose reel 20 is cut off from power transmission from the prime mover 14. As a result, the hose reel 20 is in a free rotation state, and the hose 18 is smoothly pulled out from the hose reel 20 under the tension. In addition, during a period when the hose 18 is not pulled out from the hose reel 20, the brake means 80
It is in a non-energized state and restricts rotation of the hose reel 20. As a result, the hose 18 is connected to the hose reel 2.
Variation within 0 is prevented.

When a remote control command for hose winding is sent from the transmitter 48 to the receiver 38, the output terminal 1 of the receiver 38
A predetermined voltage is applied to 02. As a result, current is supplied directly from the output terminal 102 to the electromagnetic clutch 76 and from the output terminal 102 to the electromagnetic brake 80 via the one-way current passing element 104, so that both the electromagnetic clutch 76 and the electromagnetic brake 80 are energized. state, the electromagnetic brake is 80
allows the hose reel 20 to rotate, and the electromagnetic clutch 76 is brought into contact to transmit the rotational power of the prime mover 14 to the hose reel 20. As a result, the hose reel 20 rotates and the hose 18 is wound onto the hose reel 20.

If a remote control command for hose winding is not sent from the transmitter 48 to the receiver 38, a predetermined voltage is not applied to the output terminal 102 of the receiver 38, and both the electromagnetic clutch 76 and the electromagnetic brake 80 are de-energized. state, and the hose reel 20 is restricted from rotating.

〔Example〕

Examples will be described with reference to the drawings.

FIG. 2 is an overall schematic diagram of a power sprayer set equipped with a hose winding device. Power sprayer set 1
The frame 12 of 0 has an engine 14 and a hose 18 that sprays a chemical solution driven by the engine 14.
A reciprocating pump 16 is mounted thereon, and a hose reel 20 around which the spray hose 18 is wound is rotatably supported. Hose reel 20 is rotated by engine 14 in a rotational direction that winds up spray hose 18 . The medicine tank 22 stores a medicine solution, and the suction hose 24 is connected to the suction port of the reciprocating pump 16 at one end, and a strainer 26 is attached to the other end, and the medicine tank 22 is connected to the suction port of the reciprocating pump 16 .
submerged in a chemical solution. The return hose 28 returns the remaining liquid from the remaining liquid port of the reciprocating pump 16 to the medicine tank 22. An alignment take-up device 30 is attached to the frame 12 above the hose reel 20. The movable base 32 of the alignment and winding device 30 is the hose reel 20
The hose guide roller 34 reciprocates in the axial direction of the hose reel 20 in synchronization with the rotation of the spray hose 18. It is rotatably supported by a movable base 32 and is oriented in the direction in which the spray hose 18 is pulled out. The receiver 38 is fixed to the upper side of the frame 12,
It has an antenna 40. The spray nozzle 42 as a pipe-shaped member has a plurality of nozzles 43 at appropriate intervals in its longitudinal direction, is held by an operator 44, and is connected to the distal end of the spray hose 18 on the hand side. The spraying tip 46 is the spray nozzle 4
2, and controls the introduction of the chemical solution from the spray hose 18 to the spray nozzle 42. Transmitter 4
8 is attached to the waist of the worker 44 with a band, has an antenna 50, and sends radio waves to the receiver 38. The switch case 52 is attached to the proximal end of the spray nozzle 42 and is connected to the transmitter 48 via a lead wire 54. That is, control commands issued by the operator 44 at the switch case 52 are sent to the transmitter 48 via the lead wire 54.
There, radio waves are transmitted and sent to the receiver 38. Commands that can be remotely controlled by the switch case 52 include starting and stopping the engine 14, rotating the hose reel 20 for winding up the spray hose 18, and braking the hose reel 20.

FIG. 3 is a structural diagram of the power transmission system between the engine 14 and the hose reel 20. Output shaft 56 of engine 14 and crankshaft 58 of power sprayer 16
extend parallel to each other, pulleys 60 and 62 are fixed to the output shaft 56 and crankshaft 58, respectively,
The V-belt 64 is mounted on pulleys 60 and 62. The intermediate shaft 66 extends parallel to the crankshaft 58 and has bearings 69, 69 attached to the bracket 68.
The bracket 68 is rotatably supported via the frame 12, and the bracket 68 is fixed to the frame 12. The pulley 70 is connected to the crankshaft 5 at the end opposite to the pulley 62.
8, the pulley 72 is rotatably supported by the intermediate shaft 66, and the V belt 74 is fixed to the pulleys 70, 72.
It is mounted on. The electromagnetic clutch 76 controls the connection between the pulley 72 and the intermediate shaft 66, is supplied with current through a lead wire 78, and is connected when energized and disconnected when not energized.
The electromagnetic brake 80 is fitted onto the intermediate shaft 66 and supplied with current through a lead wire 82, allowing rotation of the intermediate shaft 66 in a energized state, and restricts rotation of the intermediate shaft 66 in a non-energized state. The reel shaft 84 of the hose reel 20 extends parallel to the intermediate shaft 66,
The pulleys 86 and 88 are fixed to the intermediate shaft 66 and the reel shaft 84, respectively, and the V-belt 90 is connected to the pulley 8.
6,88. Figure 4 shows hose head 3
6 and a limit switch 92. FIG. A limit switch 92 is attached to the receiving member 96.
is attached to detect the swinging of the hose head 36, and a detection signal is sent via the lead wire 94.
The receiving member 96 is rotatably supported on the movable base 32 around a vertical line, and the hose head 36 is supported by the receiving member 96 through a pin 97 so as to be swingable around a horizontal axis.
mounted on. Tension coil springs 98 are applied to the hose head 36 and the receiving member 96 at the upper and lower ends, respectively, and bias the hose head 36 in the direction in which the hose head 36 stands up. Contact plate 9
9 is fixed to the hose head 36 at a position corresponding to the limit switch 92 so as to be able to come into contact with the limit switch 92. Spraying hose 1
8 is about to be withdrawn from the hose reel 20, the hose head 36 falls forward against the tension coil spring 98 due to the tensile force of the spray hose 18. As a result, the contact plate 99 contacts the limit switch 92, and the limit switch 92
Turns on.

Figure 1 shows an electromagnetic clutch 76 and an electromagnetic brake 8.
0 is a control circuit diagram of the Battery 100 is + and -
It has an electrode, and the - side is grounded. The receiver 38 is connected at one end to the negative side of the battery 100 and has one output terminal 102. When the receiver 38 is powered on, a predetermined positive voltage is applied to the output terminal 102 in response to a remote control command transmitted by radio waves from the transmitter 48 to the receiver 38 .
The electromagnetic clutch 76 is connected to the battery 10 at one end.
0 and output terminal 10 at the other end.
Connected to 2. The electromagnetic brake 80 is connected to the negative side of the battery 100 at one end, and connected to the output terminal 10 via a diode 104 at the other end.
2, and is also connected to the power supply terminal of the battery 100 via a limit switch 92. Diode 104 allows current to flow only from output terminal 102 to electromagnetic brake 80 . The changeover switch 106 has an automatic side terminal 108 and a manual side terminal 11.
0 and is manually operated. Automatic side terminal 10
8 is connected to the + side of the battery 100, the receiver 38 is in a power-on state. The take-up switch 112 has a take-up position and a stop position, and is manually operated to control the connection between the manual side terminal 110 of the changeover switch 106 and the + side terminal of the electromagnetic clutch 76.

Next, the operation of the embodiment will be explained.

When an attempt is made to pull out the spray hose 18 from the hose reel 20, the hose head 36 rotates and tilts around the pin 97 due to the tensile force of the spray hose 18, and the contact plate 99 contacts the limit switch 92, causing the limit switch 92 to close. turns on. As a result, the electromagnetic brake 80 becomes energized and allows the intermediate shaft 66 to rotate. Furthermore, since the diode 104 blocks current from flowing from the electromagnetic brake 80 to the electromagnetic clutch 76, even if the electromagnetic brake 80 is energized, the electromagnetic clutch 7
6 is held in a de-energized state, and the hose reel 20
The power transmission from the engine 14 is cut off. As a result, the hose reel 20 is in a freely rotating state, and the spraying hose 18 is smoothly pulled out from the hose reel 20 under the tension. Also,
During the period when the spraying hose 18 is not pulled out from the hose reel 20, no tensile force is applied to the spraying hose 18, so the hose guide roller 34 is in the upright position, the contact plate 99 is separated from the limit switch 92, and the limit switch 92 is turned OFF. ,
The electromagnetic brake 80 is in a non-energized state and restricts rotation of the intermediate shaft 66, that is, the hose reel 20. As a result, the spraying hose 18 is connected to the hose reel 2.
Variation within 0 is prevented.

When the changeover switch 106 is in the automatic position (a)
This will be explained separately in (b) and (b).

(a) When a remote control command for hose winding is sent from the transmitter 48 to the receiver 38, a predetermined voltage is applied to the output terminal 102 of the receiver 38. As a result, current is supplied directly from the output terminal 102 to the electromagnetic clutch 76 and from the output terminal 102 to the electromagnetic brake 80 via the diode 104, so that both the electromagnetic clutch 76 and the electromagnetic brake 80 are energized, and the electromagnetic brake 80 is supplied with current. The brake 80 allows the intermediate shaft 66 to rotate, and the electromagnetic clutch 76 is brought into contact, connecting the intermediate shaft 66 and the pulley 72, and the rotational power of the engine 14 is transmitted to the reel shaft 84. As a result, the hose reel 20 rotates and the hose is wound onto the hose reel 20.

(b) When a remote control command for hose winding is not sent from the receiver 38 to the transmitter 48, the receiver 38
A predetermined voltage is not applied to the output terminal 102 of the
Both the electromagnetic clutch 76 and the electromagnetic brake 80 are in a non-energized state, so that rotational power from the engine 14 is not transmitted to the intermediate shaft 66, and the rotation of the intermediate shaft 66 is restrained by the electromagnetic brake 80.
As a result, the hose reel 20 is in a state where its rotation is restricted.

(c) When the selector switch 106 is in the manual position
This will be explained separately in (d) and (d).

(c) When the winding switch 112 is in the winding position,
Electromagnetic clutch 76 via take-up switch 112
Further, the positive voltage of the battery 100 is also applied to the electromagnetic brake 80 via the diode 104. This is the same as in (a) above,
The rotational power of the engine 14 is transmitted to the reel shaft 84, the hose reel 20 rotates, and the hose is wound onto the hose reel 20.

(d) When the take-up switch 112 is at the stop position,
No voltage is applied to the + terminal of electromagnetic clutch 76, and both electromagnetic clutch 76 and electromagnetic brake 80 are de-energized. This is the same as in (b) above, and the hose reel 20 is in a state where rotation is restricted.

[Effect of idea]

As described above, according to this invention, when a hose winding command is received from the transmitter, a predetermined voltage is applied to the output terminal of the receiver, and the electromagnetic clutch and the brake means are connected to the common output terminal of the receiver. is,
A one-way current passing element is provided between the brake means and the output terminal of the receiver, which allows current to flow only in the direction from the output terminal to the brake means.
As a result, when the output terminal of the receiver is in a voltage applied state, both the electromagnetic clutch and the brake means are energized, the hose reel rotates to wind up the hose, and the detection switch turns off the hose from the hose reel. When withdrawal is detected, the brake means becomes energized and the electromagnetic clutch is prevented from being energized by the one-way current passing element despite the energized state of the brake means, whereby the hose is smoothly pulled out from the hose reel. Therefore,
The electromagnetic clutch and braking means can be appropriately controlled by one channel of remote control commands from the transmitter to the receiver, simplifying the structures of the receiver and transmitter, and reducing the number of connections between the receiver and the electromagnetic clutch and braking means. Wiring can also be simplified.

[Brief explanation of drawings]

Figures 1 to 4 relate to an embodiment of this invention; Figure 1 is a control circuit diagram of an electromagnetic clutch and electromagnetic brake; Figure 2 is a general schematic diagram of a power sprayer set equipped with a hose winding device; Figure 3 is a structural diagram of the power transmission system between the engine and the hose reel, Figure 4 is a structural diagram of the range including the hose head and limit switch, and Figure 5 is a diagram of the hose winding device already proposed by the applicant. FIG. 3 is a control circuit diagram of an electromagnetic clutch and an electromagnetic brake. 14... Engine (prime mover), 18... Spraying hose, 20... Hose reel, 38... Receiver,
48... Transmitter, 76... Electromagnetic clutch, 80...
...Electromagnetic brake (braking means), 92... Limit switch (detection switch), 102... Output terminal, 104... Diode (unidirectional current passing element).

Claims (1)

[Scope of claims for utility model registration] (1) Hose reel 20 around which hose 18 is wound
and a braking means 80 that puts the hose reel 20 into a non-braking state and a braking state in an energized state and a de-energized state, respectively, and a state in which rotational power is transmitted from the prime mover 14 to the hose reel 20 in an energized state and a de-energized state, respectively. a receiver 38 having an output terminal 102 to which a constant voltage is applied according to a remote control command from the transmitter 48; Wiring connected to the receiver 3
A one-way current passing element 104 that allows only current flowing from the output terminal 102 of No. 8 to the brake means 80, detects the withdrawal of the hose 18 from the hose reel 20, and makes the brake means 80 energized during the withdrawal period. A hose winding device comprising a detection switch 92. (2) The brake means 80 is an electromagnetic brake that brakes the rotation of a rotating shaft of a rotary power transmission system from the prime mover 14 to the hose reel 20. hose winding device. (3) The hose winding device according to claim 1 or 2, wherein the one-way current passing element 104 is a semiconductor diode. (4) The detection switch 92 is disposed above the hose reel 20 and
The hose winding device according to any one of claims 1 to 3, which is a utility model registered claim, characterized in that the hose winding device includes a limit switch that detects the swinging of the head that swings as the hose 18 is pulled out from the hose. .