JP3333137B2 - Riding paddy traveling work machine - Google Patents

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.

A brake pedal is provided on the right side of the cockpit to perform a brake operation on the left and right rear wheels. Preceding
Japanese Utility Model Publication No. 2-150448 disclosed as a technology
In the mobile agricultural machine (riding rice transplanter) disclosed in the gazette , the clutch
The belt transmission is linked to the clutch release operation of the pedal.
Some pulleys are configured to be braked (conventionally
Example 1).

[0004]

The riding type paddy traveling work machine usually performs traveling on the road such as paddy traveling work and movement while riding, but the driver is required to enter and exit the field and load and unload the truck. Performing while riding may give you anxiety or fear. This is because the riding type paddy traveling work machine 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 forward and backward.

[0005] For this reason, it is sometimes easier to get out of the field or to 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. In addition, according to the configuration of the above-described conventional example,
And clutch release operation of the clutch pedal on a slope
Brake operation of pulley of belt transmission in conjunction with operation
The main shift lever was operated in this state.
When the neutral position is reached, brake operation is released.
The aircraft was moved and the aircraft began to move against the pilot's will.
There was a risk.

The present invention provides a single clutch for operating the main clutch on / off and operating the brake from a dismounting position separately from a clutch pedal, a brake pedal, etc., for operating the main clutch from a riding position (operating in a cockpit). An operating tool is provided so that the operating tool can be operated from the exit position,
By making the operation system of the operating tool and the clutch pedal non-interlocked with each other, the operation can be performed more safely and no malfunction occurs , and the transmission is neutralized.
An object of the present invention is to provide a riding type paddy traveling work machine that can reliably stop the aircraft even if the operation is performed at a time.

[0007]

A specific means for solving the problem in the present invention is a traveling vehicle equipped with front and rear wheels.
The control unit and engine, including the steering wheel and driver's seat, are
To transfer power from the engine to the front and rear wheels.
The clutch device, the transmission, and the brake in the moving power transmission system
The device is equipped with a
A clutch pedal for operating the clutch device;
With a single operating device to operate the switch device and brake device
In the riding type paddy traveling work machine provided with
Brake device between the front and rear wheels downstream of the transmission.
Is provided in the power transmission system, and the single operating tool is
Operable from the single operating tool, and the clutch
The pedals are in different positions and when you operate one, the other
One does not work, one does not work when operating the other
It is characterized by being provided as follows .

[0008]

According to the present invention, when performing paddy traveling work with a riding paddy traveling work machine, the engine power is disconnected and connected by depressing a clutch pedal while riding, etc., while the riding type paddy traveling work machine is ridged. When moving over or loading / unloading trucks, the driver operates a single operating tool at the exit position where he / she got off the traveling vehicle body.
Operate and release the main clutch and brake.

Therefore, the feeling of anxiety and fear in the riding state is eliminated. When one of the clutch pedal and the single operating tool is operated, the other is not linked, so that even if one of them is operated, the other operating tool does not move. there is no order, there is no operation of the inadvertent (accidental), there is no such that both sides of the hand. Ma
In addition, the brake device is connected to the front and rear wheels downstream of the transmission.
The transmission was installed in the power transmission system between
The brakes work reliably even in the trill.

According to the present invention described in detail above, the riding position
The main clutch can be operated with the clutch pedal
At the getting off position, the main clutch on / off and brake operation
A single operating tool for performing
Work can be easily performed when the work machine is taken in and out of the field.
I can. Also, a single operating tool and clutch pedal
Means that even if you operate one of them, the other
Tool is careless (unexpected). Operation tool (including clutch pedal)
Moves and no hands are pinched. In addition, brake
Power transmission between the front and rear wheels downstream of the transmission
Transmission system, the transmission is neutral
Brakes operate reliably, and the paddy field steering
The aircraft does not start moving against the intention of.

[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 tension pulleys 23L, 23H are attached are pivotally supported by a support shaft 27. Pins 28, 29 project from the respective support arms 27 at the front and rear positions of the tension arms 26L, 26H. 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
Numeral 6 is provided in the front position of the step 44 and at a position which does not interfere with getting on and off, and in this embodiment, is constituted by a lever which can be manually operated at the getting off position.

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. In addition, a single operating tool 4 for operating the clutch and the brake at the dismounting position
Reference numeral 6 denotes a clutch that is disengaged and braked 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. One hand on the handle 6 and the other hand on the operating tool 4
At 6, the clutch can be disengaged by the operation in the opposite direction, and the brake can be operated, so that the operation can be reliably performed in the state of getting off.

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.
And the slip ratio is increased by loosening the tension, the power transmitted by the belt transmission 16 is reduced by this slip, and the traveling speed is adjusted to the deceleration side from the speed set by the shift lever 35, Here, the normal working speed (for example, the planting speed is 0.4 m / sec to 1.0 m / sec)
c) separately from a low-speed running state such as putting in and out of a field (over a ridge), loading and unloading on a truck, and the like.
A speed of 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, in order to put the riding type paddy traveling work machine in and out of the field,
When the driver operates the single operating tool 46 while moving the riding paddy traveling work machine slowly with the belt transmission 16 at the low speed side at the getting off position, the moving speed is further reduced or stopped. The operation of the operating tool 46 at this disembarkation position can be performed because the grip 46B is provided below the steering handle 6, so that one hand is the grip 46B and the other hand is the steering handle 6B.
In this state, the row transplanting operation and the like while manipulating (steering) the rice transplanter 1 can be performed 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, there are provided a pedal 42 for operating the main clutch at the boarding position, and a single operating tool 46 for operating the main clutch and the brake 51 which can be operated at the getting off position.
A brake 51 operated by the operation tool 46 is provided on a rotating portion (rotary shaft 53) that transmits power near the clutch pedal 42, thereby enabling a simple operation without using a brake in a transmission case or the like. The rice transplanter 1 can be stopped by operating the brake in the connection configuration.

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.

The clutch pedal 42 for operating the main clutch and the single operating tool 46 for operating the main clutch and the brake are provided on the link 45 with the respective claw portions 42A, 46A.
Can be engaged from above, so that when one of them is operated, the other does not cooperate, so that the claw portion 4
2A and 46A abut against the link 45, and even if one of them is operated, the other (pedal or operating tool) does not move, so that the operating tool does not move carelessly and does not malfunction. There is no danger of getting your hands caught.

By providing a single operating tool 46 in the vicinity of the clutch pedal 42, it is easy to link the clutch operation by the pedal 42 with the manual operation of clutch release. FIGS. 6 and 7 show a third embodiment, in which an 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. The operation tool 46 according to the third embodiment is slightly swingable to the left and right.
When the lock lever 49 is moved to make the locking hole 49A face and engage with the locking pin 50, the shift lever 35 can be rotated by rotating the operating tool 46.

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, and moves the arc plate 49. 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. Further, a single operating tool 46 with a lever for manually operating the clutch and the brake at the dismounting position is a bonnet 12.
, Near the fender 13, etc., and the shift lever 35 is located at a position where it is most difficult to operate from the dismounting position. In this case, the position is easier to operate from the dismounting position than the shift lever 35.

[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;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Riding type paddy traveling work machine 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

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification code FI B60K 41/22 B60K 41/22 B60T 7/08 B60T 7/08 B B62D 11/08 B62D 11/08 V F16D 67/02 F16D 67 / 02 K F16H 61/26 F16H 61/26 (58) Fields investigated (Int.Cl. ⁷ , DB name) A01C 11/02 B60K 17/02 B60K 20/02 B60K 23/02 B60K 41/22 B60T 7 / 08 B62D 11/08 F16D 67/02 F16H 61/26

Claims (1)

(57) [Claims] (1) A steering system is provided on a traveling body equipped with front and rear wheels.
The steering unit and engine, including the steering wheel and driver's seat, are installed.
To transmit power from the engine to the front and rear wheels
Power transmission system with clutch device, transmission device and brake device
The driver's seat to depress the
A clutch pedal for operating a clutch device;
And a single operating device for operating the brake and
In the riding type paddy traveling work machine, the brake device is moved downstream from the transmission to the front / rear position.
Provided in the power transmission system between the wheels and the single operating device
A single operating tool provided operable from a vehicle position, and
Operate the clutch pedals to different positions and one side
When the other is operating, one is not connected when operating the other.
A riding paddy traveling work machine characterized by being provided so as not to be engaged .