JP4479754B2 - Seedling transplanter - Google Patents

Description

  The present invention relates to a seed transplanter such as a rice transplanter and belongs to the technical field of agricultural machinery.

2. Description of the Related Art Conventionally, there has been known a configuration in which a hook clutch lever for turning on and off a part of a plurality of strips is provided in the vicinity of a rear step floor (see, for example, Patent Document 1).
JP 2002-347670 A

  畦 When the clutch lever is in the “engaged” state, if it protrudes greatly from the rear step floor surface, it may be an obstacle for the driver during driving operation or seedling replenishment work, leading to a problem of inadvertent operation.

An object of the present invention is to solve the above problems, and to prevent erroneous operation of the saddle clutch lever and to improve workability .

In order to solve the above problems, the present invention has taken the following technical means.
That is, the invention described in claim 1 includes a front wheel 2 and a rear wheel 3 provided on the front and rear of the vehicle body 1, and an operation box 4 having an operation panel on the top surface of the vehicle body 1 and a steering device having a steering handle 5. In a seedling transplanter equipped with a seedling planting section 6 provided on the rear side of the vehicle body 1 and provided with a driver's seat 9 on the rear side of the steering device and with a plurality of planting apparatuses 13 provided on the rear part of the vehicle body 1 to be movable up and down, A plurality of hook clutch levers 18 capable of turning on and off a part of the plurality of planting devices 13 are provided so as to swing up and down while penetrating the rear step floor 16 located on the side of the driver's seat 9; respective furrow clutch lever 18 is a clutch engaging position the lower limit of the vertical swing range, the upper limit was made clutch disengaging position, projects each ridge clutch lever 18 upward from the rear step floor surface at a clutch disengaging position, enters the position The rear step floor and the bulging floor 16a bulging forward from the front of the rear step floor are located below and are surrounded by the bulging floor 16a in plan view. Rear wheel rotational speed sensors 27L and 27R are provided, and an electric saddle clutch motor 28 for changing the clutch lever 18 at the clutch disengagement position to the clutch engagement position is connected to the output side to connect the left and right rear wheel rotational speed sensors 27L and 27R. Based on the detection result of the rotational speed difference, the control unit 26 outputs to the electric saddle clutch motor 28, and the operation of the electric saddle clutch motor 28 changes the saddle clutch lever 18 in the clutch disengaged position to the clutch engaged position . This is a seedling transplanter.

Accordingly, a front wheel 2 and a rear wheel 3 are provided on the front and rear of the vehicle body 1, and an operation box 4 having an operation panel on the upper surface of the vehicle body 1 and a steering device having a steering handle 5 are provided on the step 15, and In the seedling transplanting machine provided with a driver's seat 9 on the rear side and a seedling planting part 6 provided with a plurality of planting apparatuses 13 at the rear part of the vehicle body 1 so as to be movable up and down, of the plurality of planting apparatuses 13 A plurality of eaves clutch levers 18 that can be turned on and off for some planting operations are provided so as to be able to swing up and down while penetrating through the rear step floor 16 located on the side of the driver's seat 9. Since the seedling transplanter has the lower limit of the moving range as the clutch engagement position and the upper limit as the clutch disengagement position, when performing a part of the plurality of planting devices 13, Attaching device 13 And it enters only the lever 18, furrow clutch lever 18 of the other planting device 13 that does not perform the planting is to cut. When most of the planting work other than the dredging is done, the dredging clutch is engaged, and the dredging clutch levers are positioned at the lower limit of the vertical swing range. Improved seedling replenishment workability.

Further, each saddle clutch lever 18 protrudes upward from the rear step floor surface at the clutch disengagement position, and is lower than the rear step floor surface and the bulging floor 16a formed to bulge forward from the front surface of the rear step floor at the entering position. Since it is configured to be surrounded by the bulging floor 16a as viewed, the hook clutch lever 18 protrudes upward from the rear step floor surface when the hook clutch is disengaged, and each hook clutch lever 18 enters the rear step floor surface and the Because it is located below the bulging floor 16a bulging forward from the front of the rear step floor, and each hook clutch lever 18 is surrounded by the bulging floor 16a bulging forward from the front of the rear step floor. It will be protected, and it is possible to prevent accidental operation of each clutch clutch lever 18 in advance. , Thus seedling supplying work is further improved.

The bulging floor 16a bulging forward from the front surface of the rear step floor serves to guard the saddle clutch lever 18 at the clutch disengagement position and also serves as a step.

Also, left and right rear wheel rotational speed sensors 27L and 27R are provided on the input side of the control unit 26, and an electric saddle clutch motor 28 for changing the clutch clutch lever 18 at the clutch disengagement position to the clutch engagement position is connected to the output side. Based on the detection result of the rotational speed difference between the left and right rear wheel rotational speed sensors 27L and 27R, the control unit 26 outputs to the electric rod clutch motor 28, and the operation of the electric rod clutch motor 28 causes the rod clutch lever 18 in the clutch disengagement position to be released. Since it is configured to change and control to the clutch engagement position, the planting operation is finished in a state where some planting operations of the plurality of planting devices 13 are turned off by the heel clutch lever 18, and the vehicle body is more than predetermined When the turning control is performed, the control unit 26 outputs to the electric saddle clutch motor 28 based on the detection result of the rotational speed difference between the left and right rear wheel rotational speed sensors 27L and 27R. I forgot to change the clutch clutch lever 18 from the clutch disengagement position to the clutch engagement position by operating the clutch motor 28, so that the clutch clutch lever 18 is in the engagement position after the clutch is disengaged by the clutch clutch lever 18. It is possible to prevent a situation in which the process moves to the next process, and the workability is improved.

In short, according to the present invention, erroneous operation of the saddle clutch lever 18 can be prevented and workability can be improved.

An embodiment of the present invention will be described with reference to the drawings.
FIGS. 1 and 2 show a 6-row Ueda transplanter as an example of a seedling transplanter, and a pair of left and right front wheels 2, 2 and rear wheels 3, 3 as a traveling wheel are installed in front of and behind a vehicle body 1. ing. An operation box 4 having an operation panel on the upper surface and a steering device having a steering handle 5 and the like are installed on the step 15 at the front upper part of the vehicle body, and a seedling planting part 6 that can be moved up and down is provided at the rear part of the vehicle body. ing. A driver's seat 9 is installed on the rear side of the control device, and an engine E that transmits power to each part of the rice transplanter is mounted below the driver's seat.

  The rotational power of the engine E is transmitted from the engine output shaft 21 to the input shaft 23 of the hydraulic continuously variable transmission (HST) via the belt 22, and from the output shaft of the HST to the mission input shaft of the mission case 10. It has become.

  The seedling planting portion 6 is mounted on the rear portion of the vehicle body through a lifting link mechanism 7 so as to be able to be lifted and lowered by a telescopic operation of the lifting hydraulic cylinder 8. The amount of rotation of the upper link 7a of the lifting link mechanism 7 is detected by the lifting link sensor S1.

  In addition, the seedling planting unit 6 includes a two-row planting device 13 and 13 having a seedling tank 11 that reciprocates left and right, and a planting basket 12 that cuts out one seedling and transplants it into the soil. ..., floats (side floats) 14 and 14 for leveling while sliding on the seedling planting surface, sensor float (center float) 14S, and the like are provided.

  The power transmission to the seedling planting section 6 is transmitted into a planting clutch case 30 provided at the rear of the vehicle body via a work machine take-out transmission shaft taken out from the mission device in the mission case 10, and planted therefrom. It is transmitted to the seedling planting part 6 by the transmission shaft 31. In the power transmission unit to the two-row planting devices 13, 13,... Are provided with a hook clutch that can be turned on and off for each two-row planting unit. Each of these hook clutches is connected to each hook clutch lever 18 through an operation interlocking mechanism such as a wire, and is turned on and off by operation of the clutch lever 18. The saddle clutch lever 18 is arranged to swing up and down while penetrating the rear step floor 16 located on the side of the driver's seat 9, and the lower limit of the vertical swing range is the clutch engagement position. Is the cutting position.

  At the upper limit clutch disengagement position, the saddle clutch lever 18 protrudes upward from the floor surface, and at the lower limit clutch engagement position, it is located below the floor surface and bulges formed forwardly from the front surface of the floor in plan view. It is configured to be surrounded by the floor 16a. The saddle clutch lever 18 is positioned below the upper surface of the bulging floor 16a, and the bulging floor 16a itself serves to guard the saddle clutch lever at the clutch disengagement position and also serves as a step. . Further, as a means for surrounding the clutch lever, as shown in FIGS. 5 and 6, the same effect as described above can be obtained if the clutch lever is surrounded by another guard member 16 b protruding from the front surface of the floor. it can.

  Further, as shown in FIG. 7 and FIG. 8, even when the saddle clutch lever 18 is in the clutch “on” position or “cut off” position, the floor 16 has sufficient hands to prevent it from protruding from the floor surface. It is advisable to provide a lever guide groove 19 that can be inserted. According to this, since the lever does not protrude from the floor surface, it does not get in the way, and even if a step is taken, the lever is not stepped on.

  As shown in FIG. 9, if the saddle clutch lever 18 is provided in the fender 20 portion of the rear wheel 3, the operator can watch the rear wheel from the lever guide groove by turning it backward.

  In a rice transplanter equipped with vehicle body turning control means and hook clutch on / off control means, when the car body turning control is carried out after the hook planting operation is performed with the hook clutch, the hook clutch anchoring state If it is configured so that it is automatically released, it is possible to prevent a situation in which it is forgotten to release from the planting work state stopped by the saddle clutch and the process proceeds to the next process. Workability is improved.

  In this embodiment, as shown in FIG. 10, left and right rear wheel rotational speed sensors 27L and 27R are provided on the input side of the control unit 26, and an electric rod clutch motor 28 is provided on the output side. When the planting operation is completed with some of the hook clutches set to “disengaged”, and the vehicle body is controlled to turn more than a predetermined amount, based on the rotational speed difference detection results of the left and right rear wheel rotational speed sensors 27L and 27R, The controller 26 outputs to the electric saddle clutch motor 28, and the "disengaged" state saddle clutch is controlled to the "on" state by the operation of the motor.

  Further, in the embodiment shown in FIG. 11, a lifting link sensor S1 is provided on the input side of the control unit 26, and a front-wheel differential lock solenoid 29 is provided on the output side thereof. When the height of the seedling planting part 6 becomes a certain level or more during planting work in Fukada or the like, the control unit 26 outputs the front-wheel differential lock solenoid 29 according to the detection result of the lift link sensor S1, and the front-wheel differential lock solenoid 29 The front and right front wheels are driven at a constant speed by operation to control the front wheel diff lock state. According to this, the straightness in Fukada is improved, and the planting performance is further improved.

  Further, in the embodiment shown in FIGS. 12 to 14, the speed change lever (HST lever) 32 controls the forward and backward movement of the airframe by driving the HST by the operation in the front-rear direction across the “neutral N” position of the lever. It is configured as follows. The speed change lever 32 has a “planting speed” position during planting work in the forward operation area, a “moving speed” position during traveling on the road, and a “PTO” position during lateral movement adjustment of the seedling tank. In addition, the respective operation routes are arranged in the order of “planting speed”, “moving speed”, “PTO”, which are frequently operated from the side close to the driver's seat 9 to the outside. The operability is improved by setting the least frequent "PTO" to the outermost side. Also, by setting "PTO" to the outer side, the non-brake position is prevented from being generated by a normal shift. In the past, “PTO” was positioned in the middle, so neutrality (non-brake) occurred between “moving speed” and “reverse speed” to reduce the danger on slopes. There was an accompanying problem It could be overcome by the arrangement. In the control circuit shown in FIG. 14 in this embodiment, a neutral detection sensor 33 for detecting the neutral position of the shift lever 32 and a PTO position detection sensor 34 for detecting the “PTO” position are provided on the input side of the control unit 26. The brake solenoid 35 provided on the output side of the control unit 26 is controlled to operate based on the detected information. That is, when the neutral detection sensor 33 detects the neutral position by the operation of the shift lever 32 and further the PTO position detection sensor 34 detects the “PTO” position, the brake solenoid 35 is activated by a command from the control unit 26. Therefore, it is controlled to a non-braking state (non-braking) so that the parking brake does not work.

  Also, as shown in FIGS. 15 and 16, when the machine is tilted to a predetermined value or more during work or movement, the speed change is made according to the detection result of the tilt sensor 36 provided on the input side of the control unit 26. The PTO restricting motor 37 provided on the output side of the control unit is controlled so that the lever 32 can only shift to “planting speed” or “moving speed”, and the restricting tool 38 is operated so that the “PTO” position of the speed change lever. It is configured to check the shift to. According to this, the shift lever erroneously enters the neutral position to the PTO position, and it is possible to prevent the aircraft from slipping or moving on an inclined ground in the non-braking state.

  In the embodiment shown in FIG. 17 and FIG. 18, the speed change lever 32 is interlocked so that the forward / backward operation of the airframe is governed by the forward / backward operation thereof, and the parking brake 39 is applied by the lateral operation at the neutral position. ing. When the parking brake is operated, the lowering lock valve 40 that locks the lowering operation of the seedling planting unit is simultaneously operated to hydraulically lock the lowering of the seedling planting unit. During maintenance work of the rice transplanter, etc., the parking brake can be applied to prevent the machine from moving, and at the same time, the lowering of the seedling planting part can be locked to perform the work safely.

The embodiment shown in FIGS. 19 and 20 will be described.
The display panel 43 provided near the driving unit is provided with a tack panel type monitor 44 and is connected to a mobile phone 45 so that hands-free conversation is possible. By inputting the trouble location along the line and transferring the data to the service center, it becomes possible for the service person to prepare parts and tools before going to the site, and to speed up the repair.

Side view of rice transplanter Same as above Side sectional view of the main part Top view of the main part Side view of the main part of the step floor Top view of the main part Side view of main part of step floor of another embodiment Front view of the main part Side view of rice transplanter main part Control block diagram Control block diagram Shift lever side view Rear view of the shift lever and its operation path diagram Control block diagram Plan view showing the control device of the shift lever Control block diagram Shift lever operation path diagram Side view showing interlocking configuration of parking brake and lowering lock mechanism of planting part Rear view of display panel Monitor display example

DESCRIPTION OF SYMBOLS 1 Car body 2 Front wheel 3 Rear wheel 4 Operation box 5 Steering handle 6 Seedling planting part 9 Driver's seat 13 Planting device 15 Step 16 Rear step floor
16a Expansion floor 18 Clutch lever 26 Control unit
27L Left rear wheel speed sensor
27R Right rear wheel speed sensor 28 Electric saddle clutch motor

Claims (1)

A steering device having a front wheel (2) and a rear wheel (3) on the front and rear of the vehicle body (1) and an operation box (4) having an operation panel on the upper surface of the vehicle body (1) and a steering handle (5). A seedling planting part (6) provided on the step (15), provided with a driver's seat (9) on the rear side of the steering device, and provided with a plurality of planting devices (13) in the rear part of the vehicle body (1). In the seedling transplanting machine equipped with slidably moving up and down, the heel clutch lever (18) capable of turning on and off part of the plurality of planting devices (13) is located on the side of the driver seat (9). a plurality freely swing vertically while penetrating the rear step floor (16), each of said ridge clutch lever (18) is a clutch engaging position the lower limit of the vertical swing range, the upper limit is set to clutch disengaging positions, each ridge clutches Rear step lever (18) at clutch disengagement position It protrudes upward from the lower surface, and is located below the rear step floor surface and the bulging floor (16a) formed to bulge forward from the front surface of the rear step floor, and is surrounded by the bulging floor (16a) in plan view. Left and right rear wheel rotational speed sensors (27L, 27R) are provided on the input side of the control section (26), and the eaves clutch lever (18) in the clutch disengagement position is changed to the clutch engagement position on the output side. The electric saddle clutch motor (28) is connected, and the control unit (26) outputs to the electric saddle clutch motor (28) based on the rotational speed difference detection result of the left and right rear wheel rotational speed sensors (27L, 27R). and characterized in that the ridge clutch lever (18) in the clutch disengaging position and configured to change control to the clutch engaging position by the operation of the electric ridge clutch motor (28) That seedling transplanting machine.

Images