JPH11168920A - Riding paddy working machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable to carry out a ridge crossing work by bringing a clutch and a brake to put on and off at a position where the operator gets off a traveling machine body (a sulky rice-transplanter) and bring the brake to act in a simply connected structure. SOLUTION: In this riding paddy working machine, a clutch pedal 42 for operating a clutch at a boarding position and an operating device 46 for putting the clutch and a brake on and off at a position of getting off are installed and the brake 51 operated by the operation device 46 is installed to a rotative unit 53 which transmits the power near the clutch pedal 42.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a riding type paddy traveling machine such as a riding type rice transplanter, a submerged direct sowing machine and the like.

[0002]

2. Description of the Related Art For example, in a riding type rice transplanter, power transmission from an engine to a transmission is performed by a belt type transmission (tension type clutch) having a tension applying means, and is arranged on a side of a steering handle. The shift lever operates the belt shift / tension clutch, and the clutch pedal provided on the left side of the cockpit can be used to turn the tension clutch on and off.

[0003] A brake pedal is provided on the right side of the cockpit to perform a brake operation of left and right rear wheels.

[0004]

Generally, a riding rice transplanter performs on-road traveling such as rice transplanting and moving while riding.
If the driver enters and exits the field and loads and unloads the truck while the driver is on the vehicle, the driver may feel uneasy or fearful. This is because the riding rice transplanter is configured such that the distance between the front and rear wheels is reduced in order to reduce the turning radius in the field, and the body may be largely tilted back and forth.

[0005] For this reason, it is sometimes easier to get in and out of the field and unload the truck. However, the originally provided clutch pedal and brake pedal, etc., are provided in positions that are easy to operate at the boarding position, so it is difficult to operate when getting off and maneuvering, and the operation is delayed and There is a risk of collision and damage.

According to the present invention, an operating tool for operating the on / off of the clutch and the brake from the dismounting position is provided separately from a clutch pedal, a brake pedal, etc., which are operated from a riding position (operated in a cockpit). Riding paddle traveling work machine capable of solving the above-mentioned problems of the prior art by enabling the tool to be operated from the alighting position and using a simple brake operated by the operating tool. The purpose is to provide.

[0007]

The concrete means for solving the problems in the present invention is provided with a clutch pedal 42 for operating the clutch at the boarding position and an operating tool 46 for engaging and disengaging the clutch and operating the brake at the getting off position. At the same time, the brake 51 operated by the operating tool 46 is
Rotating portion 53 for transmitting power near clutch pedal 42
(Claim 1).

[0008]

According to the present invention, when a riding type paddy traveling work machine (hereinafter, simply referred to as a riding type rice transplanter) 1 is moved over a ridge or loaded on a truck or the like, the driver gets off the traveling vehicle body 4. By operating the operating tool 46 at the disembarkation position, the on / off of the clutch and the operation of the brake are performed.

Therefore, the feeling of anxiety and fear in the riding state is eliminated. Further, since the brake 51 operated by the operation tool 46 is provided on the rotating portion that transmits power near the clutch pedal 42, the brake originally mounted on the rice transplanter, such as in a transmission case, is used. It is possible to operate with a simple connection configuration without the need.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 4, reference numeral 1 denotes a riding type rice transplanter as a riding type paddy traveling work machine, which is equipped with a front wheel 2 and a rear wheel 3.
An engine 5 is mounted on a front portion of a four-shaft traveling vehicle body 4. A maneuvering section 8 including a maneuvering handle 6 and a driver's seat 7 is provided in the front and rear middle of the traveling vehicle body 4, and seedlings are provided behind the maneuvering section 8 via a lifting cylinder 9 and a lifting link mechanism 10. The device 11 is connected to be able to move up and down. Reference numeral 12 denotes a hood covering the engine 5, and reference numeral 13 denotes rear right and left rear fenders of the driver's seat 7.

In the first embodiment shown in FIGS. 1 to 4, the power of the output shaft 15 of the engine 5 is transmitted through the multi-stage belt transmission 16 as an auxiliary transmission to the transmission shaft 17 of the transmission case 17. The power is transmitted to the shaft 18 and transmitted to the front wheel 2 and the rear wheel 3 via a transmission such as a main transmission in the transmission case 17 and also transmitted to the seedling planting device 11 and the like.

The multi-stage belt transmission 16 is of a double tension type. Two sets of pulleys 20 and 21 are provided on the output shaft 15 of the engine 5 and the transmission shaft 18 of the transmission case 17, respectively. Pulley 20L,
21L and the belt 22L wound around them are for low speed, and the pulleys 20H, 21H and the belt 22H wound around them are for high speed, and each belt 22L,
Tension pulleys 23L and 23H can be pressed against 22H.

The tension arms 26L, 26H to which the respective tension pulleys 23L, 23H are attached are pivotally supported by a support shaft 27. And each front pin 28 has a switching link 30L, 30H.
The return holes 31L, 31H and one end of the clutch link 32 are connected to each rear pin 29.

The tension pulley 23, the tension arm 26, the return spring 31 and the like constitute tension applying means 24 for applying tension to the belt 22 of the belt transmission 16. The support shaft 27 is also pivotally supported by a speed change lever 35 having a grip 35A at an upper portion thereof, and an engagement pin 36 is provided in the middle in the longitudinal direction. Reference numeral 37 denotes a switching tool pivotally supported by a support shaft 38. Two switching pins 39L and 39H are protruded from the switching tool 37, and a long hole 40 is formed between the two pins 39L and 39H. The shift lever 35 is engaged with the engagement pin 36. The other ends of the switching links 30L and 30H are connected to the two pins 39L and 39H, respectively.

FIG. 1 shows a low-speed power transmission state. The low-speed side tension arm 26L causes the tension pulley 23L to move the low-speed side belt 2 by the pulling force of the return spring 31L.
Pressed against 2L. When the shift lever 35 is pivoted counterclockwise (in the direction of arrow A in FIG. 1) from this state, the switching member 37 rotates about the support shaft 38 to pull up the low-speed side switching link 30L and resist the return spring 31L. Then, the low-speed side tension arm 26L is lifted to reduce the tension of the belt 22L and cut off the power.

At the same time, the high-speed switching link 30
H can be lowered, and the high-speed side tension arm 26H is rotated by the return spring 31H, so that the tension pulley 23H is pressed against the belt 22H.
H is applied with tension to transmit high-speed power. At one end of the clutch link 32, a loose fitting portion 32A loosely fitted to the rear pin 29 of the tension arm 26 of both high and low speed.
Is formed, and the other end is linked to the clutch pedal 42.

A pedal 42 for engaging and disengaging the clutch is pivotally supported by a pivot shaft 43 fixed to the traveling vehicle body 4 below a step 44 so that its base (boss portion) can be freely depressed, and protrudes upward from the step 44. A claw 42A protrudes from the boss. A link 45 is pivotally supported on the pivot shaft 43, and the distal end of the link 45 is the clutch link 32.
The claw portion 42A can be engaged with the link 45 from above.

When the clutch pedal 42 is depressed, the pawl portion 42A rotates and engages with the link 45 from above, pulling the clutch link 32 in the downward direction B in FIG. The high-speed and low-speed tension arms 26 can be turned in the lifting direction to cut off both high-speed and low-speed power. It constitutes a tension type clutch.

Reference numeral 46 denotes an operation tool pivotally supported by the pivot shaft 43.
The upper grip 46B is located sufficiently in front of the speed change lever 35, and is located at a position where a dismounted operator (driver) can easily perform a turning operation. That is, the operation tool 4
Reference numeral 6 denotes a lever which is manually operable at a position in front of the step 44 and at a position where it does not interfere with getting on and off.

The operating tool 46 has a grip 46B
A claw 46A protrudes from the boss at the base similarly to the clutch pedal 42, and the claw 46A also engages with the link 45 from above to connect the clutch link 32 to FIG.
Pulling downward, the low-speed side and high-speed side tension arms 26 are turned in the lifting direction against the return spring 31 to cut off both high-speed and low-speed power.

That is, the operating tool 46 is manually operated (manual operation).
Clutch and brake (brake will be described later)
When the is operated, the clutch is disengaged and the brake is operated by the downward rotation operation, so that the operation is performed in the pressing direction to facilitate the operation. The operating tool 46 for operating the clutch and the brake at the disembarkation position includes:
The clutch is disengaged by turning in the direction away from the steering handle 6, in this embodiment, by turning forward as indicated by an arrow C in FIG.
It is configured to operate the brake, whereby one hand is put on the handle 6 and the other hand is applied to the operating tool 46, the clutch is disengaged by operation in opposite directions, and the brake operation is ensured, so that the vehicle is safely disembarked. It is possible to operate with.

Reference numeral 47 denotes a guide member of the operation tool 46, which is fixed to the bonnet 12 or the like, and is capable of holding the operation tool 46 constituted by a lever which can be manually operated at each operation position. The lifting tension arm 26 includes:
Actually, only the entrance side where the tension pulley 23 represses the belt 22 is adjusted, and the tension of the belt 22 by the tension pulley 23 can be changed by adjusting the lifting amount of the tension arm 26.

When the operating tool 46 is disposed (held) at the position where the guide member 47 shown in FIG.
When the tension pulley 23 is elastically pressed against the belt 22 with a regular force, the low-speed or high-speed power can be transmitted normally, and when the tension pulley 23 is disposed (held) at one position of the guide member 47, the belt 22 is pressed by the tension pulley 23. As the force decreases, the tension of the belt 22 is loosened and a slip occurs.
, The slip rate is increased, the power transmitted by the belt transmission 16 is reduced, and the running speed is adjusted to a deceleration side from the speed set by the speed change lever 35. Here, the normal working speed (for example, the planting speed is 0.4 m / sec to 1.0 m / sec)
c), a low-speed running state such as putting in and out of a field (over a ridge), loading and unloading to a truck, for example, 0.1 m
/ Sec is possible.

Further, when the operating tool 46 is turned to the cutting position, the tension pulleys 23 are separated from the belt 22, and the power transmission by the belt transmission 16 is cut off in the same manner as when the clutch pedal 42 is depressed. . Therefore, when the driver operates the operation tool 46 while slowly moving the riding type rice transplanter with the belt speed change device 16 at the low speed side at the disembarkation position in order to put the riding type rice transplanter into and out of the field, the moving speed is reduced. Can be further reduced or stopped, and the operation of the operating tool 46 in this disembarkation position can be performed by using one of the grips 46B because the grip 46B is provided below the steering handle 6.
B, the other hand can be carried over a row while the rice transplanter 1 is steered (steered) with the other hand hung on the steering handle 6 in a stable posture.

FIGS. 1, 3, and 4 show a brake device 51 of a power transmission system. The brake device 51 has a brake means 54 for braking a rotating shaft 53 that transmits power from the transmission case 17 to the rear wheel differential device 52, and an operation means 55 for operating the brake means 54 with an operation tool 46. . That is, a pedal 42 for operating the clutch at the boarding position, and an operating tool 46 for operating the clutch and the brake 51 that can be operated at the getting off position are provided. It is provided on a rotating part (rotating shaft 53) that transmits nearby power, so that the rice transplanter 1 can be stopped by operating the brake with a simple connection structure without using a brake in the transmission case or the like. is there.

More specifically, the brake means 54 is a band brake or a disc brake attached to the traveling vehicle body 4, and its operation lever 56 is rotated by a Bowden wire 57 of the operation means 55. One end of the inner wire 57 </ b> A of the Bowden wire 57 is inserted into an operating body 58 fixed to the operating tool 46, and a hook 59
Can be engaged with the operating body 58.

Therefore, when the operating tool 46 is turned to the brake position by rotating the operating tool 46 beyond the disengagement position of the clutch (see FIG. 3), the operating body 58 pulls the inner wire 57A through the latching tool 59, and As a result, the rotating shaft 53 can be braked by operating the brake means 54, and the traveling vehicle body 4 can be stopped by the operation tool 46 which can be manually operated at the getting off position.

FIG. 5 shows a second embodiment.
6 is pivotally supported on the support shaft 27 similarly to the speed change lever 35. An engagement member 48 is projected from the operation tool 46, and the engagement member 48 can be engaged with the rear pin 29 of the high-low tension arm 26. In addition, it is possible to change the position of the high and low tension arms 26 without using the clutch link 32, finely adjust the tension of the belt 22, and perform the shifting operation of the traveling vehicle body 4. Incidentally, also in the second embodiment, the brake device 5
1 can be added.

Also, the clutch pedal 42 and the operating tool 46 for operating the clutch and the brake can engage with the link 45 from above with the respective claw portions 42A, 46A. To
The claw portions 42A and 46A come into contact with the link 45,
Even if each is operated, the other (pedal or operating tool) does not move, so there is no danger of the operating tool moving carelessly and pinching the hand.

Further, by providing the operating tool 46 near the pedal 42, clutch operation by the pedal 42 and
This makes it easier to coordinate the manual clutch release operation. FIGS. 6 and 7 show a third embodiment. This operating tool 46 is pivotally supported by a support shaft 27, and an arc-shaped plate 49 centered on the support shaft 27 is fixed to a middle part in the longitudinal direction. A locking hole 49A is formed in the arc plate 49, and a locking pin 50 protruding from the transmission lever 35 is detachable from the locking hole 49A. Operating tool 4 of the third embodiment
6 can be swung right and left slightly, and when the arc plate 49 is moved so that the locking hole 49A is opposed to and engaged with the locking pin 50, the shift lever 35 is rotated by rotating the operating tool 46. It can be operated dynamically.

That is, similarly to the operation of the shift lever 35 from the dismounting position, the shift operation of the belt transmission 16 can be performed by the operating tool 46 indicated by the lever, and even a short person who cannot reach the shift lever 35 can be easily operated. Can be operated. The guide member 47 shown in FIG.
A guide groove 47B for the operating tool 46 is formed in addition to the guide groove 47A. The guide groove 47B can be held at each of the high-speed, low-speed, and neutral operation positions similarly to the guide groove 47A. A retracting position is formed in which the retaining hole 49A is detached from the retaining pin 50, retracted at the disengaged position, and held at this position.

The present invention is not limited to the above embodiment, but can be variously modified. For example, the belt transmission 16 may be a triple tension type belt transmission having three sets of belt transmission means or a continuously variable transmission type belt transmission having only one set of belt transmission means using split pulleys. In addition, the operating tool 46 by a lever for manually operating the clutch and the brake at the disembarkation position can be arranged on the front side of the bonnet 12, near the fender 13, or the like, and the shift lever 35 is moved to the position where it is most difficult to operate from the disembarkation position. Since it is arranged, if it is located at a position distant from the shift lever 35, in most cases, it will be a position that is easier to operate from the getting off position than the shift lever 35.

[0033]

According to the present invention described in detail above, since the operating tool capable of operating the clutch on / off and the brake at the dismounting position is provided, it is easy to put the riding type paddy traveling work machine in and out of the field. Work can be done. In addition, since the brake operated at this disembarkation position is provided on the rotating portion that transmits power near the clutch pedal, the brake can be operated with a simple connection configuration.

[Brief description of the drawings]

FIG. 1 is a side view showing a main part of a first embodiment of the present invention.

FIG. 2 is an exploded perspective view of the belt transmission.

FIG. 3 is an exploded perspective view of the main part.

FIG. 4 is a side view of the riding type rice transplanter.

FIG. 5 is a side view showing a second embodiment.

FIG. 6 is a side view of the third embodiment.

FIG. 7 is a sectional view taken along line XX of FIG. 6;

[Description of Signs] 1 Riding rice transplanter 5 Engine 15 Output shaft 16 Belt transmission (tension belt type clutch) 17 Transmission case 18 Transmission shaft 23 Tension pulley 26 Tension arm 35 Shift lever 42 Clutch pedal 46 Operating tool 51 Brake 53 Rotation Department

Claims (1)

[Claims] 1. A clutch pedal (42) for operating a clutch at a boarding position, and an operating tool (46) for engaging and disengaging a clutch and operating a brake at a dismounting position, and a brake operated by the operating tool (46). (5
1) A riding type paddy traveling work machine, wherein 1) is provided in a rotating portion (53) for transmitting power near the clutch pedal (42).