JP2002142518A - Sulky rice transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sulky rice transplanter in which, when a main clutch pedal is stepped into, a main clutch is operated on a disconnection side and a brake is simultaneously operated on a braking side, thereby improving workability. SOLUTION: A main clutch lever 35 is disposed on a main clutch pedal 32 to enable the operation of the main clutch pedal 32 at a stepping position with the main clutch lever 35. The main clutch pedal 32 is formed in a state capable of being held at a stepping position. A releasing operation portion capable of releasing the holding of the main clutch pedal 32 at the stepping position from the operation seat side and from the ground is disposed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

FIG. 1 shows a riding rice transplanter according to the present invention. This riding rice transplanter has a front wheel 1 and a rear wheel 2
A four-row seedling planting apparatus 5 is connected to a rear part of a four-wheel drive type traveling body 3 provided with a hydraulically driven link mechanism 4 in a vertically movable manner. As shown in FIGS. 1 and 7, an output shaft 7 of an engine 6 mounted on a front portion of the traveling body 3 and an input shaft 9 of a transmission case 8 supporting the front wheels 1 are interlocked via a belt transmission 10. Concatenated,
The gears are shifted by the transmission case 8 to drive the front wheels 1. The power taken out of the transmission case 8 is transmitted to the rear transmission case 11 supporting the rear wheel 2, and the work power taken out of the transmission case 8 is transmitted to the seedling plant 5.

[0002] As shown in FIGS. 4 and 5, a battery stand 13 supporting a battery 12 is provided at a lower front portion of the traveling machine body 3, and right and left sides of a guard frame 14 disposed so as to surround the lower portion of the battery stand 13. An operation arm 15 for ground operation is attached to the outer side surface so as to swing back and forth. The operation arm 15 is formed by bending a round pipe material so as to expand downward. Bolts 16 are used so that the left and right bases of the operation arm 15 can swing up and down around the fulcrum a on the left and right sides of the guard frame 14. Are linked. By appropriately tightening the bolts 16, an appropriate friction resistance that does not cause the operation arm 15 to arbitrarily swing is given, and the operation arm 15 can be manually oscillated, and the operation arm 15 is frictionally held in the upright posture. be able to.

As shown in FIGS. 4 and 5, stoppers 17 are fixed to the right and left sides of the guard frame 14 by welding. As shown by solid lines in FIG. The contact with the front end prevents the operation arm 15 from swinging rearward beyond the standing posture. As shown by the two-dot chain line in FIG. 4, the left and right bases of the operation arm 15 abut against the lower surface of the stopper 17, thereby preventing the operation arm 15 from swinging forward beyond the forward lying posture. Is done. In the standing posture as shown in FIGS. 1 and 2, the operating arm 15 is in a substantially vertically standing posture, and in the falling posture forward as shown in FIG. 6, the operating arm 15 is raised forward at an angle of several tens degrees. The posture is inclined like a circle.

[0004] As shown in FIGS. 2 and 3, the distal end of the operation arm 15 is suitable to be able to grip sideways so that the operation arm 15 in the forwardly lying posture can be easily pushed down and pulled forward. It is constituted by a lateral grip 15a having a width. As shown in FIGS. 1, 2, and 3, a center mascot 18 as an aiming tool indicating the left and right centers of the traveling body 3 is provided near the tip of the operation arm 15 so as to be able to swing up and down around a fulcrum b. I have.

[0005] As shown in FIG.
The belts 23a, 23b are attached to two sets of pulleys 22a, 22b having different transmission ratios attached to the output shaft 7 and the input shaft 9.
And a double-tension speed change function configured to perform high-low two-stage speed change by selecting and operating one of the tension rollers 24a, 24b acting on the belts 23a, 23b. The arms 25a, 25b of the tension rollers 24a, 24b
6 (see FIGS. 1 and 3) is linked to a sub-transmission lever 27 disposed on the left side of the vehicle 6 via two sets of link mechanisms 28a and 28b. As shown in FIG. 1, a main transmission lever 29 for operating a gear transmission (not shown) of the transmission case 8 is provided at the center front of the operation step 30.

[0007] As shown in FIG. 7, tension rollers 24 a and 24 b for performing a high-low gear change are configured to function as a main clutch 31. As shown in FIGS. 3 and 7, a contact portion 33 is provided on a pedal arm 32a of a main clutch pedal 32 disposed at a front left portion of an operation step 30, and an arm 2 of the tension rollers 24a and 24b is provided.
The base ends of 5a, 25b are arranged so as to face the contact portion 33. When the main clutch pedal 32 is depressed, the tension rollers 24a, 24b are operated to the clutch disengagement side, and the engine 6 A tension clutch type main clutch 31 for interrupting transmission to the transmission case 8 is configured.

As shown in FIGS. 7, 8, and 9, a main clutch lever 35 and a brake arm 36, which are directed forward of the traveling body 3, are loosely supported on a fulcrum shaft 34 of the pedal arm 32a. Main clutch lever 3
5 is urged by the torsion springs 37 and 38 to the upper return position. The main clutch lever 35 is the pedal arm 3
2a is arranged to cross from above, and when the main clutch lever 35 is pressed down, the pedal arm 3
The main clutch 31 is disengaged by the push-down operation of the main clutch pedal 32a due to a partial hit from above, and the main clutch pedal 32
, The main clutch lever 35 is left at the return position.

As shown in FIGS. 7, 8, 9 and 10, a brake piece 42 is provided at the distal end of the brake arm 36 for pressing the belt winding groove of one pulley 22a on the driven side of the belt transmission 10. The main clutch lever 35 and the brake arm 36 are interlockingly connected with elastic flexibility through a rod 44 on which a compression spring 43 is fitted. As a result, the brake piece 42 is elastically pressed by the pulley 22a in accordance with the operation of pushing down the main clutch lever 35 to disengage the main clutch 31, and the lower transmission of the disengaged main clutch 31 is performed. A brake 41 for braking the system is configured.

As shown in FIGS. 3 and 8, a locking lever 45 which engages with the latch 32b of the depressed main clutch pedal 32 is provided at the front left side of the driving step 30.
The main clutch pedal 3 which is swingably movable back and forth around the fulcrum c and is urged forward to return, and is depressed.
2 can be locked and held by the locking lever 45. The locking pin 35a of the main clutch lever 35 is locked by the locking lever 45, and the main clutch lever 35 can be held at the operating position where the main clutch 31 is disengaged and the brake 41 is operated to the braking side.

As shown in FIGS. 1, 2 and 3, on the left and right sides of the front of the traveling machine body 3, a reserve seedling rest 52 is arranged with a passage 51 for getting on and off the side of the bonnet 50. ing. The stand 52 for the spare seedlings has a support 5 formed in an arch shape.
4 is provided on the support stand 55 of the traveling machine body 3, and the support 54 is provided with a plurality of stages of seedling resting plates 56 in an outwardly cantilever shape.
It can be pivoted backward about b.

As shown in FIG. 2 and FIG.
4b is a vertical axis d of a rear support shaft 57 provided on the support base 55.
It is rotatably fitted around and is supported by a set bolt 58 to prevent it from falling off. The lower part of the front support column 54a is opposed to the upper end of the front support shaft 59 provided on the support base 55 in a state where it is opposed. Are linked. As shown in FIGS. 11 and 12, a U-shaped positioning metal fitting 6 having a cross section open toward the inside of the traveling vehicle body 3 is provided below the front support column 54 a.
0 is provided so as to protrude downward, and the positioning bracket 60 is fitted to the front support shaft 59 from the lateral outer side, so that the front support shaft 5 is provided.
9 and the front support 54a are positioned concentrically and butted up and down.

As shown in FIGS. 11 and 12, a positioning bracket 60 is rotatable through a support shaft 61 and has a lever 62.
Is provided with a latch 63 that can be rotated by
With the front support shaft 59 and the front support column 54a positioned concentrically and abutting up and down, the latch 63 is locked to the back of the front support shaft 59, so that the front support 54
It is configured to prevent a from separating from the front support shaft 59 laterally and outward. By operating the lever 62 in the reverse direction to remove the latch 63 from the front support shaft 59, as shown by the two-dot chain line in FIG. 6 and FIG. The vehicle can be rotated rearward by about 180 °, so that the left side of the front part of the traveling body 3, that is, around the main clutch lever 35, can be easily opened to make it easy to operate.

As shown in FIGS. 2 and 11, the rear support 5
A bracket 66 supporting a support arm 65 of a seedling marker 64 used when the traveling machine body 3 travels along a row of seedlings previously planted is provided at a lower portion of 4b. A stopper 67 is provided on the rear support shaft 57, and as described above, the entire stand 52 for the preliminary seedling is moved backward by about 180 °.
When rotated, the bracket 66 comes into contact with the stopper 67, and further rotation of the stand 52 for the spare seedling is prevented.

As shown in FIGS. 11 and 12, a locking hole 68 is provided on the lateral outer surface of the front support shaft 59, and a positioning pin 69 is inserted into the locking hole 68 on the inner surface of the positioning metal fitting 60.
When the front support 54a is butt-connected to the front support shaft 59, the front support 54a is prevented from coming off in the vertical direction with respect to the front support shaft 59.

The riding rice transplanter according to the present invention is constructed as described above. When a worker works on a driver's seat 26 in a normal operation, as shown in solid lines in FIGS. Then, the operation arm 15 is set to the standing posture, and the center mascot 18 is standing. In this case, even if the main clutch 31 is depressed to operate the main clutch 31, the brake 41 is not operated to the braking side because the main clutch lever 35 remains.

When the traveling body 3 is taken in and out of a field or loaded on a truck bed or the like, the traveling body 3 is inclined forward and backward, and when it is difficult for the operator to operate the vehicle while riding on the driver's seat 26, In this case, the operator descends on the ground and steers while traveling the traveling body 3 at a slow speed, and as shown in FIG. To correct the direction of the traveling machine body 3. In this case, for example, as shown in FIG.
The front part of the traveling body 3 may be slightly lifted, but in such a state, the lifting of the front part of the traveling body 3 can be suppressed by pressing down the operation arm 15. When the traveling body 3 is difficult to climb due to poor scaffolding, the operation arm 15 can be pulled forward to assist the traveling body 3 in ascending.

When the worker stops the traveling machine body 3 while operating on the ground, when the main clutch lever 35 is pressed down, the main clutch 31 is disengaged, the brake 41 is operated to the braking side, and the vehicle travels. Airframe 3 stops immediately. When it is desired to maintain the stopped state of the traveling body 3, the main clutch lever 32 may be held at the operating position where the main clutch lever 32 is pressed down by using the locking lever 45.

As shown in FIG. 14, when the traveling body 3 is loaded on the truck bed 70, the operation arm 15 in the forwardly lying posture is moved backward by the rear frame 71 of the truck cab due to a delay in the disengagement operation of the main clutch 31. The operation arm 15 is allowed to swing upward in a posture inclined forward and upward, so that the operation arm 15 can be easily moved by the reaction force from the rear frame 71. Swing upward.

[Another Embodiment of the Invention] The present invention can also be carried out in the following modes. As shown in FIG. 15, a plurality of locking holes 73 are provided around a fulcrum a of the guard frame 14 that supports the operation arm 15, and a connection pin 74 that is detachably attached to the base end 15 b of the operation arm 15 is By selectively inserting the operation arm 15 into any one of the locking holes 73, the operation arm 15 can be configured and implemented so as to be fixed in a plurality of postures between a standing posture and a forward falling posture.

As shown in FIG. 16, the operation arm 15
Is constituted by a rod-shaped arm having a loop-shaped lateral grip 15a at the tip end, and is configured to be capable of changing its posture within a range of a standing posture and a forward falling posture by swinging around a fulcrum a.
The operation arm 15 may be configured to be able to change its posture in the horizontal direction around the vertical fulcrum e, and may be configured to operate the operation arm 15 from the horizontal direction at the front of the traveling body 3. This is convenient when the direction of the traveling machine body 3 is corrected in a narrow place of the truck bed 70 or the like.

As shown in FIG. 17, the pedal arm 3
The main clutch lever 35 is directly connected to the main clutch pedal 32a, and the main clutch pedal 32a and the brake arm 36 are connected to the compression spring 4a.
3 and the rod 44 may be linked. in this case,
By depressing the main clutch pedal 32, the brake 41 is operated to the braking side.

A side brake (not shown) for the left and right rear wheels 2 operated by left and right side brake pedals arranged on the right side of the driving step 30 is used as a brake operated by the main clutch lever 35 to the braking side. You can also.

[Brief description of the drawings]

FIG. 1 is an overall side view of a riding rice transplanter.

FIG. 2 is a perspective view of a front portion of the traveling body.

FIG. 3 is a plan view of a front portion of the traveling body.

FIG. 4 is a side view of the vicinity of a mounting portion of the operation arm.

FIG. 5 is a front view of the vicinity of a mounting portion of the operation arm.

FIG. 6 is a side view showing the front part of the traveling body in a state in which the operation arm is set to a forwardly lying posture and the entire stand of the spare seedling is rotated backward by about 180 °.

FIG. 7 is a side view of the vicinity of the belt transmission.

FIG. 8 is a side view showing the vicinity of the brake;

FIG. 9 is a plan view near a brake;

FIG. 10 is a front view showing the vicinity of a brake;

FIG. 11 is a longitudinal side view showing the vicinity of the front and rear struts of the reserve seedling rest.

FIG. 12 is a cross-sectional plan view showing a fixing structure of a front support of a preliminary seedling rest.

FIG. 13 is a schematic side view showing an example of a usage pattern.

FIG. 14 is a schematic side view showing another example of a use mode.

FIG. 15 is a side view showing the vicinity of a mounting portion of an operation arm according to another embodiment of the invention.

FIG. 16 is a plan view of a front portion of a traveling body according to another embodiment of the invention.

FIG. 17 is a side view showing the vicinity of a main clutch lever and a brake according to another embodiment of the present invention.

[Explanation of symbols]

 3 traveling body 15 operating arm 26 driver's seat 31 main clutch 32 main clutch pedal 35 main clutch lever 41 brake 52 spare seedling rest

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) G05G 1/14 G05G 1/14 E (72) Inventor Hiroyuki Miki 64 Ishizukitamachi, Sakai-shi, Osaka Kubo Co., Ltd. Inside the TA Sakai Works (72) Inventor Kazuo Aoki 64 Ishizu-Kitamachi, Sakai City, Osaka Prefecture Inside Kubota Sakai Works, Ltd. (72) Inventor Tsuyoshi Inoue 64 Ishizu-Kitamachi, Sakai City, Osaka Prefecture (Reference) 2B062 AA02 AA03 AA09 AB01 BA11 BA18 BA22 BA24 2B064 AA02 AA05 CA02 CA10 CA11 CA19 CA25 CA28 CA30 CB01 CB05 CB08 3D036 EA01 EA08 EB02 EB03 EC02 EC23 GD01 GH16 GJ12 3J037 AA13 A13A13 A13A17 AA13 A13A13 BA03 BA08 BA32 BA34 CD02 CD06 DA24 EA12 EA22

Claims (3)

[Claims] A main clutch pedal capable of operating a main clutch to a disengagement side by depressing operation is disposed at a front portion of the traveling body, and a brake is operated to a braking side in accordance with the operation of depressing the main clutch pedal. The main clutch pedal is provided with a main clutch lever so that the main clutch pedal can be operated to a depressed position by the main clutch lever. A riding rice transplanter comprising a clutch pedal capable of being held at a depressed position, and a release operation unit capable of releasing the main clutch pedal from being held at the depressed position from the driver's seat side and the ground side. 2. The riding rice transplanter according to claim 1, wherein an operation arm for ground operation is provided at a front portion of the traveling body so as to freely change its posture between a standing posture and a forward falling posture. 3. A spare seedling rest is provided laterally outside the main clutch lever, a first position overlapping the upper end of the main clutch lever in a side view of the traveling body, and the main clutch in a side view of the traveling body. The second that moved backward so as not to overlap the upper end of the lever
The riding rice transplanter according to claim 1, wherein the spare seedling rest is configured to be freely changeable in posture.