JPH054824U - Rice transplanter - Google Patents

Abstract

(57) [Summary] (Correction) [Structure] A rolling adjustment member and a rolling sensor are provided for the traveling vehicle so that the planting portion can be moved up and down, and for automatic rolling control that tilts the planting portion to the left and right with respect to the traveling vehicle. In the rice transplanter that is provided with, the planting start sensor 77 that turns on the automatic rolling control is provided in conjunction with the descending operation of the planting part of the elevating lever, and the automatic rolling control is automatically performed after a predetermined time elapses after the planting start sensor 77 is turned on. Configured to operate automatically. [Effect] When the planting part is lowered by operating the elevating lever to change the direction of the headland, automatic rolling control is automatically started after the planting part is lowered, making it easy to handle. In addition to the above, rolling control can be performed after the planting part has landed, and the occurrence of floating seedlings can be easily prevented.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a rolling device for a rice transplanter in which a planting portion is mounted on a traveling vehicle so as to be tiltable right and left via a rolling fulcrum.

[0002]

[Prior Art]

 Conventionally, a rolling sensor that detects the left and right inclination of the planting section and a rolling adjustment member that corrects the left and right inclination of the planting section are provided, and the planting section is supported substantially horizontally with respect to the rice field surface for planting work. A rice transplanter to do was developed.

[0003]

[Problems to be solved by the device]

 In the above-mentioned conventional technology, when the operator confirms the descending of the planting part and provides a switch for starting the automatic rolling control of the planting part, the above-mentioned confirmation and switch operation are required every time the headland changes direction. Therefore, there is a problem that the handling operability cannot be improved easily.

[0004]

[Means for Solving the Problems]

 Therefore, the present invention is a rice transplanter equipped with a rolling adjustment member and a rolling sensor for automatically moving the planting section on the traveling vehicle and for automatically rolling the planting section relative to the traveling vehicle. A planting start sensor that turns on the automatic rolling control in synchronization with the operation of lowering the planting part of the lever is provided, and the automatic rolling control is automatically activated after a predetermined time has elapsed from the turning on of the planting start sensor. With this, when the planting part is lowered by operating the elevating lever by changing the direction of the headland, automatic rolling control is automatically started after the planting part is lowered, so it is easy to simplify handling operations. In addition, it is possible to prevent the occurrence of floating seedlings by controlling the rolling of the planting part after landing.

[0005]

Embodiments of the present invention will be described in detail below with reference to the drawings. Fig. 1 is a front view of a main part, Fig. 2 is a side view of a riding rice transplanter, and Fig. 3 is a plan view of the same. In Fig. 1, (1) is a traveling vehicle on which an operator rides, and an engine (2) is mounted. The rear end of the body frame (3) is continuously connected to the mission case (4), and the front wheels (6) for traveling the paddy field are supported on both sides of the front part of the mission case (4) through the axle cases (5). At the same time, transmission cases (7 are continuously provided on both sides of the rear part of the transmission case (4), and rear wheels (8) for traveling on paddy fields are supported at the rear ends of the transmission cases (7). Then, the spare seedling mounts (10) are attached to both sides of the bonnet (9) for covering the engine (2) and the like, and the transmission case (7) and the like are covered by the vehicle body cover (12) forming the step (11), A driver's seat (13) is attached to an upper portion of the vehicle body cover (12), and a steering handle (14) is provided in front of the driver's seat (13) at a rear portion of the hood (9).

Further, (15) in the figure is a planting part equipped with a seedling mounting table (16) for multi-row planting and a plurality of planting claws (17), which is made of a synthetic resin of high front and low front. A planting arm (21) that allows the forward tilting seedling table (16) to be slidably supported by the planting case (20) via the lower rail (18) and the guide rail (19) in a left-right reciprocating manner, and to be cranked. Further, the planting claw (17) is attached to the planting case (20) via the planting claw drive shaft (22). The leveling floats (23) (24) (24) for planting are supported below the planting case (20) through the planting depth adjusting link (25), and the planting cases ( 20) ... are connected to the planted mission case (27), and a three-point link mechanism (30) including a top link (28) and a lower link (29) is used to plant this plant on the rear side of the traveling vehicle (1). Hydraulic cylinder (31) for connecting the planting part (15) through the attached mission case (27) to raise and lower the planting part (15) Between the rear part of the mission case (4) and the top link (28). And the planting part (15) is moved up and down by the expansion and contraction operation of the hydraulic cylinder (31), while the planting part (15) is lowered to land each float (23) (24), Reciprocate left and right One share from seedling stand (16) Seedlings sequentially taken out by the planting claw (17) is configured to inoculate so.

Further, in the figure, (32) is a traveling speed change lever, (33) is a raising / lowering lever with a plant, (34) is a depth sensitivity adjusting lever with a plant, (35) is a traveling clutch pedal, and (36) and (36) are The left and right brake pedals.

As shown in FIG. 4 to FIG. 7, a seedling take-out plate (37) facing the inclined lower end of the seedling stand (16) is fixed on the upper surface side of the planting case (20), and the seedling take-out plate (37) is fixed. The seedling take-out port (38) is opened so as to face the planting claw (17), and the planting depth adjusting shaft (39) for connecting the planting depth adjusting link (25) is provided on the lower surface of the planting case (20). The planting mission case (27) on the left side through a lever guide (40). A planting depth adjusting lever (41) is connected to the adjusting shaft (39) to operate the lever (41). Adjust the planting depth by changing the distance between the planting case (20) and the floats (23) and (24) with the lever guide (41) on the right side of the mission case (27) opposite to the lever (41). The seedling vertical adjustment lever (43) is attached via 42).

Further, a substrate (44) is fixed to the front outer surface of the left and right outer planting cases (20) (20), and columns (45) for supporting the seedling stand (16) via guide rails (19). ) A base frame is integrally connected to the base plate (44), and a pipe frame (46) that is integrally connected to the base plate (44) is extended substantially horizontally toward the outside of the machine, and the planting run on the unplanted rice field. A scoring marker (47) forming a locus is supported on the pipe frame (46) so as to be able to rise and fall.

A side bumper (48) surrounding the outside of the end of the seedling take-out plate (37) is bent into an L shape and integrally connected to the substrate (44), and a middle portion of the side bumper (48) extends in the front-rear direction. The pipe frame (46) and the outer end of the machine are connected and fixed, and a fulcrum bracket (49) is fixedly installed in the middle of the left and right extending portions of the side bumper (48) so that the outermost part of the planting portion (15) is even. Left and right sensor floats (50) (50) are provided adjacent to each other on the outside of the flat floats (24) (24), and the bracket (49) supports the sensor float (50) via a fulcrum shaft (51). This is because the rear part of the float (50) moves up and down due to a change in ground pressure, and a potentiometer type flow sensor which is a rolling sensor that detects the amount of vertical displacement in conjunction with the up and down motion of the float (50). The float sensors (52a) (52b) are attached to the bracket (50), and the vertical displacement of the left and right sensor floats (50) (50) is output to the linear output of the left and right float sensors (52a) (52b). It is configured to convert.

A lower end of a restriction link (55), which is a restriction tool, is connected to an upper surface of a rear portion of the sensor float (50) through a bracket (53) and a pin (54) and is fixed to the pipe frame (46). The guide pin (56) is inserted into the long hole (57) of the link (55), and the vertical stroke of the sensor float (50) is set by the length of the long hole (57). The sensor float (50) is arranged on the inner side of the outer side bumper (48) of the attachment part (15), and the sensor float (50) is vertically moved within a certain range by the guide of the regulation link (55). It is configured to let.

Next, as shown in FIGS. 1, 8 and 9, a hitch plate (60) is connected to the rear ends of the top link (28) and the lower link (29) through pins (58) (59). In addition, the rolling fulcrum plate (63), which is a support frame, is detachably locked to the hitch plate (60) through the upper and lower hitch pins (61) (62), and the rolling fulcrum shaft is attached to the fulcrum plate (63). The planting mission case (27) is connected and supported via (64), and the planting part (15) is swingably supported left and right about the fulcrum shaft (64). The left and right sensor floats (50) (50) are arranged symmetrically with respect to ().

A gate frame frame (65) is integrally connected to an upper end of the fulcrum plate (63), and a rolling adjustment member is provided on an upper end of the frame (65) via a bracket (66) and a support shaft (67). The cylinder (68) that supports the rolling cylinder (68) and tilts the planting part (15) in the left-right direction is connected to the fulcrum plate (63) near the upper end thereof, and the planting mission case (27) is provided. A column (69) for supporting the seedling mounting table (16) through a guide rail (19), and a buffer spring case (71) which is a buffer member on the fixed shaft (70) at the upper end of the column (69). ) Is used to connect the piston rod (72) of the cylinder (68), and a potentiometer-type counter that detects the lateral inclination of the planting part (15) with respect to the traveling vehicle (1). A machine sensor (73) is provided on the fulcrum plate (63), and a planting input shaft (74) is provided on the front side of the planting mission case (27) on the right side thereof, and a bracket (75) is provided on the left side thereof. Horizontal sensors (76), which are rolling sensors, are arranged respectively, and the horizontal inclination of the planting part (15) with respect to the planted rice field is detected by the horizontal sensor (76).

Further, as shown in FIG. 10, compared with the planting depth adjustment amount (A) of the leveling floats (23) (24) by operating the planting depth adjusting lever (41), the regulation link (55) is used. ) The vertical movement range of each float (23) (24) (50) is set so that the vertical displacement (B) of the sensor float (50) becomes large, and the planting depth becomes minimum or The sensor float (50) is configured to be capable of detecting operation at the maximum position.

Further, as shown in FIG. 10, compared with the operating range (C) of the float sensors (52a) (52b) equal to the vertical displacement amount (B) of the sensor float (50), the float sensors (52a) (52b) are compared. The detection range (D) is set to a small value to prevent abnormal values from being detected and to prevent damage to the float sensors (52a) (52b), and as shown in FIG. A work switch (77), which is a planting start sensor for detecting the attachment operation, and a non-working switch (78), which detects the lifting operation of the lever (33), are provided by each switch (77) (78). It is configured to detect the ascending / descending operation of the attachment part (15).

Next, as shown in FIG. 12, the power steering cylinder (81) is connected to the tie rods (79) (80) for steering the front wheels (6) (6) and interlocks with the steering handle (14). A hydraulic pump (84) is connected to the cylinder (81) through a power steering valve (83) which is switched by a pitman arm (82), and a lift cylinder is lifted to a hydraulic cylinder (31) that moves the planting part (15) up and down. (85) and the power steering valve (83) to connect the hydraulic pump (84) to the hydraulic pump (84) via the throttle valve (87) of the diversion valve (86). (85) is provided in series.

Further, a rolling valve (90) having left-handed and right-handed solenoids (88) (89) is provided, and the valve (90) controls the operation of the double-acting rolling cylinder (68), and at the same time, the diversion valve (90). A rolling valve (90) is connected to a hydraulic pump (84) via a throttle valve (91) of (86), and either a slow circuit (93) or a short circuit (94) having a variable throttle valve (92). A rolling valve (90) is connected to a throttle valve (91) via a transmission valve (95), and the rolling cylinder (68) is actuated by switching the valve (95) having a variable speed solenoid (96). While changing the speed, the pressure reducing action of the throttle valve (91) of the diversion valve (86) reduces the hydraulic pump (8) regardless of the change in the rotational speed of the engine (2). The high pressure oil from 4) is always applied to the variable speed valve (95) at a substantially constant pressure, and the lateral inclination correction amount of the planting part (15) per unit time is substantially constant regardless of the engine speed. Therefore, the rolling cylinder (68) can always be operated at the set speed even if the engine (2) speed changes.

Further, as shown in FIG. 13, a horizontal control circuit (97) composed of a microcomputer is provided, and each sensor (52a) (52b) (73) (76) and each solenoid (88) (89). (96) is connected to the control circuit (97), and an automatic lamp (98) for displaying an automatic control state by lighting and an output outside the detection range (D) of the float sensors (52a) (52b) An abnormality alarm lamp (99) that lights up to detect an abnormality detection state based on lighting, and an automatic changeover switch (100) having fixed, automatic and edge mode terminals (100a) (100b) (100c), and a left-up and It has a manual switch (101) having right-up terminals (101a) (101b) and low-speed, medium-speed and high-speed terminals (102a) (102b) (102c). Then, the control speed changeover switch (102) for changing the duty ratio of the pulse for driving the solenoids (88), (89), (96), and the planting part () for the traveling vehicle (1) by operating the setting dial (103). 15) The inclination setting device (104) for setting the reference inclination value, the detection changeover switch (105) for selecting the output of the float sensor (52a) (52b) and the output of the horizontal sensor (76), and the traveling speed change lever (32). Alternatively, a main clutch switch (106) for detecting a "disengagement" operation of a main clutch (not shown) is provided in association with the operation of the traveling clutch pedal (35), and each of the switches (77) (78) (100) (101) is provided. The lamps (102), (105) and (106), the lamps (98) and (99), and the setter (104) are connected to the control circuit (97).

Then, as shown in FIGS. 14 and 15, the planting portion (15) is set to the operating range (C) of the float sensors (52a) (52b) which is equal to the vertical displacement amount (B) of the sensor float (%). The detection range (D) of the float sensors (52a) and (52b) for detecting the tilt angle of is set to be small, and the rotation range (E) of the setting dial (103) is set to the edge mode adjustment range and the detection range. In order to make a certain rolling control possible, and to match the output voltage range (FG) of the float sensors (52a) (52b) with the reference slope value output range (H) of the slope setting device (104), the sensor (52a) (52b) output and setting device (104) output are obtained.

Next, as shown in FIGS. 1, 8, 9 and 13, a buffer spring case (71) is connected to and supported by the fixed shaft (70) via a ball joint (107), and the spring case (71) is also supported. A slide shaft (108) which slidably penetrates through is connected to and fixed to a piston rod (72) of a rolling cylinder (68) via a screw (109) in an adjustable length.

Further, a pair of cushioning springs (110) (111) as cushioning members are opposed to each other and urged to the slide shaft (108), and the springs (110) (111) are spring seats (112) ( 113) The spring seats (112) and (113) are screwed to a screw shaft (114) that is supported and supported by the spring case (71) and is manually supported by the screw shaft (114). A handle (115) is provided, a movable width changing motor (116) is interlockingly connected to the screw shaft (114), and the handle shaft (115) or the motor (116) rotates the screw shaft (114) forward and backward to rotate the screw shaft (114). The spring seats (112) (113) are brought into contact with and separated from each other so that the operating range of the buffer springs (110) (111) is reduced and expanded.

Further, the dead zone setting device (117) is connected to the horizontal control circuit (97) to input the dead zone width of the rolling cylinder (68) by the float sensor (52a) (52b) or the horizontal sensor (76) input. The setting accuracy is adjusted by the setting device (117) to change the control accuracy of the cylinder (68) to improve the field adaptability, and the movable width changing motor (116) is connected to the horizontal control circuit (97) to set the setting. The movable width of the buffer springs (110) (111) is changed by operating the motor (116) in conjunction with the dead band width adjustment of the device (117), and the buffer spring (110) is buffered by the dead band width of the cylinder (68). ) (111) to act, and the planting part (15) against the buffer springs (110) (111) with the cylinder (68) stopped and maintained within the dead zone width. When the cylinder (68) finishes rolling control of the cylinder (68) and the output of the sensor (73) is compared, the cylinder (68) is returned to the center of the dead band width, and the traveling vehicle ( The planting portion (15) is supported substantially horizontally with respect to (1), and the buffer springs (110) and (111) are supported in a substantially neutral state.

This embodiment is configured as described above, and as shown in the flow charts of FIGS. 16 to 20, by performing the switching operation of the manual switch (101), the switch (101) as shown in FIG. ) Left-up or right-up control is performed based on the left-up or right-up input, and the left and right tilt solenoids (88) and (89) are excited to switch the rolling valve (90) and operate the rolling cylinder (68). Then, the planting portion (15) is tilted in the left-right direction about the rolling fulcrum shaft (64), and this state is maintained until a certain time has elapsed, after which the manual control is released.

When there is no manual switch (101) input and the automatic changeover switch (100) is located at the fixed mode terminal (100a) and the fixed mode is input, the setting dial (103) is operated as shown in FIG. Input the reference inclination value of the inclination setter (104) and the sensor (73) value for this unit, and control the leftward raising or rightward raising so that the sensor (73) value matches the reference inclination value. Then, the planting part (15) is fixedly supported at an inclination angle corresponding to the reference inclination value.

On the other hand, when the automatic changeover switch (100) is switched to a position other than the fixed mode, the planting section (15) is raised by operating the planting up-and-down lever (33), and the non-working switch (78 ) Is turned on, the speed change solenoid (96) is excited by the control speed high speed switching as shown in FIG. 19, the speed change valve (95) is changed, and the rolling valve (90) is changed through the short circuit (94). Is connected to a hydraulic pump (84), and the rolling cylinder (68) is operated so that the planting part (15) is substantially horizontal with respect to the traveling vehicle (1) by the input of the sensor (73) of the machine, and the planting is performed. Before the attachment part (15) is completely lifted, the planting part (15) is supported horizontally with respect to the machine, and the planting part (15) comes into contact with the rear fender part of the vehicle body cover (12). Are prevented.

Further, when the raising / lowering lever (33) is operated to lower the planting part (15), the work switch (77) is turned on, and the control is suspended until a predetermined time elapses. ) Is waited until the time required to switch from the descending position to the planting position elapses to prevent malfunction in the initial control operation and prevent floating seedlings.

Then, when a certain period of time has passed after the planting section (15) descends, the detection changeover switch (105) is operated to input from the horizontal sensor (76). As shown in FIG. ) Based on the input, it is detected whether the left / right inclination of the planting unit (15) is within the control range, and if the planting unit (15) is tilted with respect to the machine more than the control range, it is abnormal. While the alarm lamp (99) is turned on to notify the operator, when the inclination of the planting part (15) is within the control range, the rolling cylinder (68) is controlled based on the input of the horizontal sensor (76), The planting part (15) is supported substantially horizontally with respect to the planted rice field by raising control and right raising control, and the rolling control based on the horizontal sensor (76) is repeatedly performed while maintaining that state until a certain time has elapsed.

When the detection changeover switch (105) is operated to input from the float sensors (52a) (52b), the input of the left and right float sensors (52a) (52b) is within the detection range (D) of FIGS. 10 and 14. If it is outside the detection range (D 1), the abnormality alarm lamp (99) is turned on to notify the operator of the abnormal vertical movement of the sensor floats (50) (50). On the other hand, when the sensor (52a) (52b) input is in the detection range (D), it is confirmed whether or not the automatic changeover switch (100) is in the bleeding mode. ) Or the main clutch disengagement operation of the traveling clutch pedal (35) turns on the main clutch switch (106) to stop the horizontal control, and when the switch (106) is off and the main clutch is engaged, the main unit is turned off. It is input from the sensor (73). Also, in the edge mode, the reference tilt value by operating the setting dial (103) is input from the tilt setter (104), and the horizontal point of the unit against the unit sensor (73) is compensated by the reference tilt value. Correctly, regardless of the left / right inclination of the traveling vehicle (1), the position where the planting part (15) is horizontal with respect to the planted rice field is set as the neutral position of the sensor (73) input to the machine, and the left and right float sensors ( The output difference of 52a) and (52b) is corrected by the reference inclination value of the setting device (104) to calculate the actual inclination of the planting section (15) with respect to the rice planting surface.

Then, it is judged whether the left and right float sensor (52a) (52b) inputs are large on the basis of the input to this device sensor (73) or the input correction value of this sensor (73), and with respect to the planted paddy field. When the planting part (15) is greatly inclined, the speed change solenoid (96) is excited by the control speed high speed switching, the speed change valve (95) is switched, and the hydraulic pump (84) is operated via the short circuit (94). Oil is applied to the rolling valve (90) to operate the rolling cylinder (68) at high speed, while when the inclination of the planting section (15) with respect to the planting paddy field is small, the rolling speed is switched by the control speed low speed switching. The speed change valve (95) is connected to the valve (90) through the retarding circuit (93) to operate the rolling cylinder (68) at a low speed.

Further, based on the output difference of the left and right float sensors (52a) (52b), the inclination angle of the planting part (15) with respect to the planted rice field in the left and right direction is calculated, and the left or right tilt is determined to determine the rolling cylinder. (68) is operated at the above-mentioned set speed, and left raising and right raising control are performed so as to eliminate the output difference of each sensor (52a) (52b), and the planting section (15) is set to the planting rice field. It is supported almost horizontally, and in the ridge mode, the inclination angle of the planting part (15) is based on the output difference of the left and right float sensors (52a) (52b) centered on the reference inclination value of the inclination setter (104). Is calculated and the rolling control by the cylinder (68) is performed so that the output difference of each sensor (52a) (52b) and the reference inclination value of the setter (104) are matched.

Further, when the rolling control is stopped and when the rolling cylinder (68) is stopped within the dead zone width, the planting portion is resisted by the dead zone width against the buffer springs (110) (111). While freely rolling (15), the movable width changing motor (116) is operated in conjunction with the operation of the dead band setting device (117), and the spring seats (112) (113) are brought into contact and separated by the dead band width adjustment. The movable widths of the buffer springs (110) (111) are also changed in proportion thereto.

[0032]

[Effect of the device]

 As is apparent from the above-described embodiments, the present invention provides the traveling vehicle (1) with the planting portion (15) ascendable and descendable, and tilts the planting portion (15) left and right with respect to the traveling vehicle (1). In a rice transplanter equipped with a rolling adjustment member (68) for performing automatic rolling control and a rolling sensor (76), the automatic rolling control is turned on in conjunction with the descending operation of the planting section (15) of the elevating lever (33). The planting start sensor (77) is installed and the automatic rolling control is automatically activated after a predetermined time has passed after the planting start sensor (77) is turned on. (33) When the planting part (15) is lowered by the operation, automatic rolling control is automatically started after the planting part (15) is lowered, so that the handling operation can be simplified easily. In Rutotomoni, planting unit (15) in which the like 浮苗 generation can be easily prevented rolling control performed by the after landing.

[Brief description of drawings]

FIG. 1 is a front view of a rolling cylinder portion showing an embodiment of the present invention.

FIG. 2 is an overall side view.

FIG. 3 is a plan view of the same.

FIG. 4 is a side view of the planting part.

FIG. 5 is a plan view of a planting part.

FIG. 6 is a side view of a sensor float portion.

FIG. 7 is a plan view of the same.

FIG. 8 is a side view of the rolling cylinder portion.

FIG. 9 is a partial view of the same.

FIG. 10 is an operation explanatory view of the sensor float.

FIG. 11 is an explanatory view of a lifting lever with a plant.

FIG. 12 is a hydraulic circuit diagram.

FIG. 13 is a rolling cylinder control circuit diagram.

FIG. 14 is an output diagram.

FIG. 15 is an output diagram.

FIG. 16 is a flowchart.

FIG. 17 is a flowchart.

FIG. 18 is a flowchart.

FIG. 19 is a flowchart.

FIG. 20 is a flowchart.

[Explanation of symbols]

 (1) Travel vehicle (15) Planting part (33) Lift lever (68) Rolling cylinder (rolling adjustment member) (76) Horizontal sensor (rolling sensor) (77) Work switch (planting start sensor)

Claims (1)

[Claims for utility model registration] [Claim 1] A rolling adjustment member and a rolling sensor, which are provided with a planting portion on a traveling vehicle so as to be able to move up and down, and which perform automatic rolling control for inclining the planting portion to the left and right with respect to the traveling vehicle. In the rice transplanter that is equipped with a planting start sensor that turns on the automatic rolling control in conjunction with the lowering operation of the planting part of the elevating lever, the automatic rolling control is automatically performed after a predetermined time has elapsed since the planting start sensor was turned on. A rice transplanter characterized by being configured to operate.