JPH09154336A - Sulky rice transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sulky rice transplanter having improved running stability and workability by making an overturning protective cover switchable between ascent working position and descent housing position. SOLUTION: This sulky rice transplanter comprises an overturning protective cover 7 composed of a pair of right and left vertical bar sections 7a connected to the support section 11 of a self-propelled machine body and positioned in the upright direction of the machine body and a crossbar section 7b connecting the top ends of the vertical bar sections 7a in such a way that the pair of vertical bar sections 7a are supported vertically slidably and fitting-height changeably on a supporting part so that the overturning protective cover 7 is switchable between ascent working position and descent housing position. The descent housing position of the overturning protective cover 7 is preferably set so that the crossbar section 7b is at a higher level than the top of a rear wheel fender 13 of the self-propelled machine body and near the top of the fender 13.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a riding type rice transplanter in which a seedling planting device is connected to a rear portion of a self-propelled machine body having a boarding type operation unit so as to be vertically movable.

[0002]

2. Description of the Related Art Conventionally, for example, JP-A-7-186852.
As shown in Japanese Patent Publication, when equipping a fall protection bar, it is swingably connected to a self-propelled aircraft and switched between a use posture that stands up from the connection part and a storage posture that falls from this use posture to the rear side of the fuselage. There was a technology that made it possible.

[0003]

In the above-mentioned riding type rice planting machine, the driver carries out the work of supplying seedlings from the driving section to the rear seedling planting device. For this reason, if the fall protection bar is present in the use posture on the rear side of the driving section, it will hinder seedling supply. In addition, if the fall protection bar is laid down on the rear side of the machine, it will be an obstacle when raising the seedling planting device such as turning the machine at the ridge. An object of the present invention is to provide a rice transplanter equipped with a fall protection bar in a state where it does not hinder work.

[0004]

The constitution, operation and effect of the invention according to claim 1 are as follows.

[Structure] In a riding type rice transplanter in which a seedling planting device is connected to a rear portion of a self-propelled machine body having a boarding type operation part so as to be vertically movable, a pair of right and left connected to a support part of the self-propelled machine body. Of the vertical bar of the machine body, and a fall protection bar composed of a vertical bar and a crossbar connecting the upper ends of the vertical bars to each other. The fall protection bar is configured to be changeably supported and switchable between a raised use position and a lowered storage position.

[Operation] When performing non-working traveling such as crossing a ridge,
The fall protection bar can be used as the original fall protection bar by moving it to the raised position. When working, the fall protection bar is in the lowered storage position. Then, the fall protection bar slides down from the raised use position, so that a working space for supplying seedlings to the seedling planting device from the operating unit can be secured at the rear side of the operating unit, and the seedling planting device can be used when turning. A space for raising the plant can be secured above the seedling planting device.

[Effect] The fall protection bar can be used as the original fall protection bar when crossing ridges or traveling on the road. In addition, during work, the fall protection bar can be stored so as not to be an obstacle so that the seedling planting device can be easily replenished from the operating section to the seedling planting device, or the seedling planting device can be sufficiently lifted to turn the aircraft so that work can be performed without hindrance. I was able to.

The structure, operation and effect of the invention according to claim 2 are as follows.

[Configuration] In the configuration of the invention according to claim 1, it is detected whether the fall protection bar is in the raised use position or the lowered stored position, and the fall protection bar is in the raised use position. For example, it automatically performs drafting so as to disable the operation of engaging and disengaging the clutch that turns the seedling planting device on and off, and enables the operation of engaging and disengaging the clutch when the fall protection bar is in the lowered storage position. It is equipped with a restraint mechanism that automatically releases restraint.

[Operation] When performing the planting work, if the fall protection cover is switched to the lowered storage position, the check mechanism can release the draft production for the clutch and drive the seedling planting device, but the fall protection bar is moved to the raised use position. If it is left as it is, since the check mechanism cannot drive the seedling planting device by performing the draft production for the clutch, if the seedling planting device cannot be driven, this will cause the fall protection cover to switch to the lowered storage position. It is made to recognize to work from.

[Effect] Do not forget to switch the fall protection cover to the lowered storage position, and the fall protection cover is set to the raised position when performing seedling replenishment or raising the seedling planting device. Therefore, it is possible to avoid a situation in which it becomes difficult to perform the replenishment work and the seedling planting device cannot be lifted sufficiently.

The structure, operation and effect of the invention according to claim 3 are as follows.

[Configuration] In the configuration of the invention according to claim 1 or 2, the crossbar portion is at a higher level than the upper surface of the rear wheel fender of the self-propelled aircraft as the lowering storage position of the fall protection bar. It is set in a position that exists near.

[Operation] When seedlings are fed to the rear wheel fender from the driver's seat by transferring to the rear wheel fender, for example, by feeding seedlings to the lateral end side of the seedling placing table of the seedling planting device, the seedlings were placed on the rear wheel fenders. You can do replenishment work by preventing your knees or thighs from hitting the crossbar and slipping off the fender.

[Effect] It becomes a convenient one that can be effectively used by preventing the fall protection bar from slipping off from the fender.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION As shown in FIG. 1, a pair of left and right front wheels 1, 1 and rear wheels 2, 2 are drivably provided, and a spare seedling placing device 4, which is located on both lateral sides of an engine hood 3, On the rear part of the self-propelled vehicle equipped with the alignment device 20 located above the engine bonnet 3, the riding type operating unit 6 having the driver's seat 5, etc., the fall protection bar 7 located on the rear side of the operating unit 6, etc. A link mechanism 9 that is vertically swung by a lift cylinder 8 is configured to be moved up and down to connect the seedling planting device 30, and the self-propelled machine powers the seedling planting device 30 via a rotary shaft 10. A riding type rice transplanter is configured to be transmitted.

The seedling planting device 30 includes the link mechanism 9
, A plurality of seedling planting mechanisms 3 that are drivably attached to the rear part of the transmission case that forms the planting machine body 31 and that are parallel to each other in the lateral direction of the machine body.
2. A plurality of mat-shaped seedlings to be supplied to the seedling planting mechanism 32 are formed so as to be placed side by side in the machine lateral direction, and reciprocate in the machine lateral direction in conjunction with the seedling planting movement of the seedling planting mechanism 32. While being equipped with a seedling mount 33 configured to supply seedlings to the seedling planting mechanism 32 and a plurality of grounding floats 34 attached to the lower part of the planting machine body 31 and arranged in parallel in the machine body lateral direction, The ground mud is ground by the grounding float 34, and the seedling planting mechanism 32 is mounted on this ground.
Plant seedlings by.

As shown in FIG. 2, the fall protection bar 7 is provided.
Is a pair of left and right vertical bar portions 7a, 7a and both vertical bar portions 7a.
Crossbar part 7 connecting the upper ends of a and 7a
b. Then, the pair of vertical bar portions 7a, 7a is separately inserted into the pair of left and right support portions 11, 11 formed by attaching a pair of left and right pipe members in the vertical direction to the rear portion of the operation unit 6 of the self-propelled aircraft. , The vertical bar portion 7a is locked by the lock screw 12 rotatably attached to the upper end portion of the support portion 11 so that the vertical bar portion 7a does not slide on the support portion 11 and does not come off.
It is designed to be attached to the self-propelled aircraft. By sliding the vertical bar portion 7a up and down with respect to the support portion 11 and replacing the lock screw 12 with the screw hole 7c provided on the lower end side of the vertical bar portion 7a and the screw hole 7d provided on the upper end side. , The height of attachment of the vertical bar portion 7a to the support portion 11 can be changed, and at the high attachment position where the lock screw 12 is applied to the screw hole 7c on the lower end side, the fall protection bar 7 is lifted and used as shown by the solid line in FIG. At the low position where the lock screw 12 is applied to the screw hole 7d on the upper end side, the overturn protection bar 7 is arranged in the lowered storage position shown by the chain double-dashed line in FIG. That is, when the fall protection bar 7 is in the raised use position, the crossbar portion 7b exists at a level slightly higher than the driver's head behind the driver seated on the driver's seat 5 and can be used as a fall protection bar. Become. Then, in the lowered storage position, the crossbar portion 7b is at the working level, and the seedling placing table 3 of the seedling planting device 30 is placed.
It is located near the upper end of No. 3 and does not become an obstacle when supplying seedlings to the seedling mounting table 33 of the seedling planting device 30 from the operating unit 6 or raising the seedling planting device 30 to a non-working level. At the same time, as shown in FIG. 2, the crossbar portion 7b is located higher than the upper surface of the rear wheel fender 13 and near the upper surface of the rear wheel fender 13.
It is possible to use the fall protection bar 7 so as to prevent the foot put on the rear wheel fender 13 from hitting the crossbar portion 7b or the like and slipping off from the fender 13 when seedlings are supplied to 3.

By turning on and off the transmission of the engine output from the self-propelled aircraft to the seedling planting device 30, the seedling planting device 30 is turned on and off.
The self-propelled machine is equipped with a clutch C for turning on and off the drive of the control valve 8a. As shown in FIG. 3, a lever guide of a single operation lever 14 for switching the clutch C and the control valve 8a of the lift cylinder 8 is operated. On the back side of the control lever 15, a restraint device 16 for the operation lever 14 is provided with a support member 16a for the restraint device 16.
Is provided so as to slide in the moving direction of the operation lever 14, and the restraint device 16 and the restraint device-side operation cable connecting the restraint device 16 to one vertical bar portion 7a of the overturn protection bar 7 are provided. 17a, the stroke adjusting mechanism 18, and the bar side operation cable 17b, the clutch C
A check mechanism 19 for Fall protection bar 7
Is switched from the lowered storage position to the raised use position, both operation cables 17a and 17b are pulled for the raising operation of the overturn protection bar 7, and the restraint tool side operation cable 17a resists the restraint tool 16 against the return spring 16b. Then, as shown by a chain double-dashed line in FIG. 3, the operation lever 14 is configured to be switched to a restraining position where it enters the operation path of the operation lever 14. At this time, the overturn protection bar 7 operates a stroke larger than the operation stroke of the restraint device 16, but the stroke adjusting mechanism 18 rotates the winding body 18a acting on the bar-side operation cable 17b and the winding body 18a integrally rotating. It comprises a pinion gear 18b, and a fan-shaped gear 18c that is in mesh with the pinion gear 18b and is connected to the restraint tool side operation cable 17a. The stroke difference between the operation cables 17a and 17b is adjusted by the deceleration action of these. The restraint device 16 in the restraint position is maintained in the restraint position for fixing the fall protection bar 7 in the ascending use position so that it does not move to the restraint release side even if it is pushed by the operation lever 14. A work position S that acts as a stopper and the seedling planting device 30 descends to the working level and the clutch C enters, and a descending position that the seedling planting device 30 descends to the working level and the clutch C disengages. D, a neutral position N where the seedling planting device 30 stops at a desired connection height and the clutch C is disengaged,
It is configured so that the operation lever 14 cannot be operated by switching the operation lever 14 to the working position S of the rising positions U in which the clutch C is disengaged while the seedling planting device 30 is raised to the non-working rising level. . When the fall protection bar 7 is switched from the raised use position to the lowered storage position, both operation cables 17a and 17b are loosened to lower the fall protection bar 7, and the restraint device 16 is returned by the return spring 16b. For this reason, as shown by the solid line in FIG. 3, the operation lever 14 is configured to switch from the operation path of the operation lever 14 to the restraint release position outside the operation path. The restraint device 16 in the restraint release position releases the stopper action on the operating lever 14 and moves the operating lever 14 to the operating positions S, N, D, U.
It is configured to enable switching operation to all of the above. As a result, in the restraint mechanism 19, depending on whether the bar-side operation cable 17b is being pulled or loosened, whether the fall protection bar 7 is in the raised use position or the lowered stored position. When the fall protection bar 7 is in the ascending use position, the clutch C is automatically drafted so as to disable the operation of engaging the clutch C. When the fall protection bar 7 is in the descending storage position, the clutch C is engaged. Automatic restraint release to allow operation.

A traveling continuously variable transmission M for switching the rotational output of the engine between a forward drive side and a reverse drive side with the neutral position interposed therebetween, and continuously transmitting the speed to both the front and rear wheels 1, 2 on both the forward and reverse drive sides. In preparation for the self-propelled aircraft, as shown in FIG.
A gearshift lever 4 for switching operation of the transmission M
0 on the back side of the lever guide 41
Is provided so as to slide in the moving direction of the speed change lever 40 by the guide action of the support member 42a thereof, and swings on the upper ends of the restraint device 42 and the support portion 11 via a pivot pin 43. Swinging detector 4 supported freely
4, a spring 45 that urges the swing detecting body 44 to a first swing position shown by a chain double-dashed line in FIG. 3, and an operation that connects the swing detecting body 44 and the restraining device 42. Each of the cable 46 and the detection target body 47 fixed to the vertical bar portion 7a of the overturn protection bar 7 constitutes a shift check mechanism 48 for the transmission M. When the fall protection bar 7 is switched from the raised use position to the lowered storage position, the detection target body 47 descends together with the fall protection bar 7 so that the detection target body 47 comes into contact with the detection arm portion 44a of the swing detection body 44 to swing the detection body. 44 is rocked to the second rocking position shown by the solid line in FIG.
The operation cable 46 is pulled to swing the swing detection body 44, and the restraint device 42 is switched to a restraint position against the return spring 42b so as to enter the manipulation path of the shift lever 40 as shown by the solid line in FIG. It is configured to do. The restraint device 42 in the restraint position is maintained in the restraint position and fixed to the shift lever 40 by the fixation of the overturn protection bar 7 in the lowered storage position so that it does not move to the restraint release side even if it is pushed by the shift lever 40. A neutral position N1 that acts as a stopper to bring the transmission M into a transmission stopped state, a reverse operation range R from the neutral position N1 until the transmission M reaches the maximum reverse speed, and a forward speed suitable for planting traveling by the transmission M. The gear shift lever 40 is provided in each of the work position S1 in the state and the forward operation range between the work position S1 and the neutral position N1.
Can be operated, the transmission M is moved beyond the working position S1.
Is configured so that it is impossible to operate the shift lever 40 to the maximum forward speed position F in which the maximum forward speed is reached. When the fall protection bar 7 is switched from the lowered storage position to the raised use position, the detection target body 47 rises together with the fall protection bar 7, so that the swing detection body 44 moves away from the detection arm portion 44a of the swing detection body 44. Is in the first swinging position due to the spring 45, the operation cable 46 is loosened, and the restraint device 42 is returned by the return spring 42b, so that the shift lever 4 as shown by the two-dot chain line in FIG.
It is configured so as to switch from the operation route of 0 to the restraint release position outside the operation route. The restraint device 42 in the restraint release position is configured to release the stopper action on the speed change lever 40 and enable the shift lever 40 to be switched to all operation positions. This allows
The gear shift restraint mechanism 48 determines whether or not the swing detector 44 is in the first swing position or the second swing position.
Detects whether it is in the ascending use position or the descending storage position, and if the fall protection bar 7 is in the descending storage position, the speed-up operation on the forward side of the transmission M is relatively appropriate for work traveling. It is automatically drafted so that it can only move up to a low forward speed, and if the fall protection bar 7 is in the raised use position, it automatically restrains so that the speed increasing operation on the forward side of the transmission M can be performed up to the maximum speed. To release.

In other words, the fall protection bar 7 is set to the raised use position when the vehicle is not running on the road. Then, the fall protection bar 7 can be used as the original fall protection bar. At the same time, the shift restraint mechanism 48 is released from restraint, and the traveling continuously variable transmission M is accelerated to the maximum speed to enable high-speed traveling. When performing the work, the fall protection bar 7 is set to the lowered storage position. Then, a space for seedling replenishment work and raising of the seedling planting device can be secured on the rear side of the operation unit 6, and the restraint mechanism 19 can release the restraint to drive the seedling planting device 30. While the seedlings are easily supplied to the platform 33, the seedling planting device 30 can be sufficiently lifted and the machine can be rotated while working. At the same time, since the speed check mechanism 48 is used for drafting, the traveling continuously variable transmission M can only be accelerated to a speed suitable for work traveling, and the speed is changed to a speed higher than the working speed, resulting in a planting posture. You can work while avoiding troubles such as disorder.

As shown in FIG. 4, the alignment device 20 is provided.
Is a center case 21 fixed to the self-propelled aircraft, a center reflecting mirror 23 provided at the back of a rearward-facing window 22 located in the center of the center case 21 in the lateral direction of the aircraft, and attached to both lateral sides of the center case 21. Side case 24,
A pair of left and right side cases 24, 24 facing forward and located at the ends of the side cases 24 opposite to the center case side.
Each of the side reflecting mirrors 26 is provided at the back of the. The pair of side cases 24, 24 are slidably supported by the center case 21, and are pushed out toward the center side of the center case 21 and the use position where the side case 24 is slidably supported and pulled out laterally outward from the center case 21. It is designed so that it can be switched to a storage position where the width is narrower than when it is in use. The center reflecting mirror 23 is supported by the center case 21 so as to be rotatable about an axis 23a in the vertical direction of the machine body, and a pair of left and right side reflecting mirrors 26,
The leftward posture in which the reflected light from the left side reflecting mirror 26 of 26 is reflected toward the driver 6 through the rearward facing window 22 and the right side reflecting mirror 26 of the pair of left and right side reflecting mirrors 26, 26. It is possible to switch to a rightward posture in which the reflected light is reflected through the rearward window 22 toward the driver 6. As shown in FIG. 4, when the left and right side cases 24, 24 are set to the use positions and the planted area A is on the right side of the self-propelled aircraft, the center reflector 2
When 3 is in the rightward posture and the planted land A is on the left side of the self-propelled aircraft, the center reflecting mirror 23 is in the leftward posture, and the planted article of the planted land A is most adjacent to the current work traveling site. The reflected light from the planted seedlings B located in the planting strip is configured to be reflected by the side reflecting mirror 26 toward the center reflecting mirror 23 and at the center reflecting mirror 23 toward the driving section 6, Rear window 22 from part 6
When the center reflecting mirror 23 is seen through, the image b of the planted seedling B can be seen in the center reflecting mirror 23 as shown in FIG.
The planted seedling image b visible in the center reflecting mirror 23 is located at the center of the center reflecting mirror 23 in the left-right direction, and the center marker 27 located in the center of the center of the self-propelled vehicle in front of the center reflecting mirror 23 is overlapped in the machine front-rear direction. The self-propelled vehicle body of the two reflecting mirrors 23, 26 is arranged so that when the traveling body is steered, the planting strips formed during work traveling are aligned with the planting strips of the existing plantation A at the same spacing as the spacing between the seedling planting mechanisms 32. Has been set to the layout relationship. Thereby, when the alignment device 20 is used, the wire drawing marker 35 provided in the seedling planting device 30 is used.
Even if the running target line is formed in the field by the method, even if the mud is soft and easily disappears, or it is difficult to see in deep water, the planted seedlings B can be used as the running target to easily secure the spacing between the planting lines at the above interval. You can work while

[Other Embodiment] As the check mechanism 19 and the shift check mechanism 48, the operation lever 14 or the shift lever 4 is used.
Instead of the restraint device acting on 0, a device provided with a restraint device acting on the clutch itself or the transmission itself may be employed. In addition, a detection switch or a stroke sensor that detects whether the fall protection bar 7 is in a raised use position or a lowered storage position, an actuator such as an electromagnetic solenoid that switches and operates the restraint device, and this actuator can be operated from the detection switch or the stroke sensor. It is also possible to adopt and implement the one constituted by the electric control means which is automatically operated on the basis of the above information.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

[Brief description of the drawings]

[Figure 1] Side view of the entire riding type rice transplanter

FIG. 2 is a front view of a fall protection bar installation portion.

FIG. 3 is an explanatory diagram of a check mechanism.

FIG. 4 is a sectional view of the alignment device.

[Fig. 5] An explanatory diagram of the usage procedure of the alignment device

[Explanation of symbols]

 6 Driving part 7 Fall protection bar 7a Vertical bar part 7b Crossbar part 11 Support part 13 Rear wheel fender 19 Check mechanism 30 Seedling planting device C clutch

Claims (3)

[Claims] 1. A riding type rice transplanter in which a seedling planting device (30) is connected to a rear portion of a self-propelled machine body having a boarding type operation unit (6) so as to be capable of raising and lowering the self-propelled machine body. A pair of left and right vertical bar parts (7a), (7a) connected to the support part (11) and a crossbar part (7b) connecting the upper end sides of these vertical bar parts (7a), (7a). ) Is provided, and the pair of vertical bar portions (7a) and (7a) are supported by the support portion (11) so that they can be slid up and down and the mounting height can be changed. A riding-type rice transplanter configured such that the bar (7) can be switched between a raised use position and a lowered storage position. 2. Detecting whether the fall protection bar (7) is in the raised use position or the lowered storage position,
If the fall protection bar (7) is in the raised use position, it is automatically drafted so that the clutch (C) that turns on and off the drive of the seedling planting device (30) cannot be turned on and off. The riding type rice planting according to claim 1, further comprising a restraint mechanism (19) that automatically releases restraint so that the clutch (C) can be engaged when the protection bar (7) is in the lowered storage position. Machine. 3. The crossbar portion (7b) is at a higher level than the upper surface of the rear wheel fender (13) of the self-propelled aircraft and near the upper surface of the rear wheel fender (13) at the lowered storage position of the fall protection bar (7). The riding type rice transplanter according to claim 1 or 2, wherein the riding rice transplanter is set at a position where it exists.