JP3327847B2 - 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, when loading into and out of a field or loading and unloading to and from a truck via a step board, the body is inclined forward and backward. In this inclined state, the clutch may be disengaged in order to stop the aircraft. The main clutch device of a conventional agricultural machine (riding rice transplanter) only disengages the clutch, so even if the clutch is disengaged in the above-mentioned inclined state, the aircraft may move by its own weight, causing the aircraft to collide with another object. There is a risk of damage.

[0003] Japanese Utility Model Laid-Open No. 2 disclosed as prior art.
There is a moving agricultural machine (riding rice transplanter) disclosed in Japanese Patent Application Laid-Open No. 150448 in which a pulley of a belt transmission device is braked in conjunction with a clutch disengagement operation of a clutch pedal (first conventional example).

[0004]

According to the configuration of the prior art 1 described above, the pulley of the belt transmission is brought into the brake operating state in conjunction with the clutch disengagement operation of the clutch pedal on a slope or the like. When the main shift lever is operated to be in the neutral position , the brake operation is released, and there is a risk that the aircraft may start to move against the intention of the pilot. Normally, rice transplanters perform rice transplanting and traveling on the road for moving while they are on board.However, when entering and leaving the field or loading / unloading trucks with the driver on board, they may cause anxiety or fear. There is.

[0005] 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, so that the body may be largely inclined forward and backward. For this reason, it may be 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. In addition, conventional mobile agricultural machines are operated at the riding position.
The minimum speed is relatively fast
It was set and was not suitable for maneuvering after getting off.

[0006] It is an object of the present invention to provide a riding type paddy traveling work machine which solves such problems.

[0007]

A specific means for solving the problem in the present invention is a clutch for interrupting the engine power.
Ride paddy field with a switch and a transmission brake
In the working machine, ride the operating tool for operating the clutch
Operate the clutch and brake in preparation for operable in position
A single operating tool that can be operated in the
The pitch is provided separately from the operation member to manipulate, Oyo normal working speed
Separate from the working speed of
The present invention is characterized in that a transmission device capable of performing a traveling shift state is provided .

[0008]

According to the present invention, when a riding type paddy traveling work machine (hereinafter simply referred to as a riding type rice transplanter) is moved over a ridge (into / out of a field), or is tilted for loading and unloading of trucks and the like, with operator is to interrupt the power from the engine by operating the single operation member at the getting-off position, to be stopped by braking <br/> operated device, here, meaning riding rice transplanter is pilot In contrast to this, it is surely prevented from moving under its own weight.

In addition, since a single operating tool capable of operating the clutch and the brake at the disembarkation position is provided, it is possible to easily carry in / out the field, load the truck, and the like. In addition, the normal working speed and this working speed
Separately, low-speed running shift conditions for getting in and out of the field, etc. are possible.
Equipped with an efficient transmission so that
Sufficient walking while maneuvering at the alighting position for loading on the rack etc.
And can operate at very low speed .

According to the present invention described in detail above, the alighting position
Operation tool that can operate clutch and brake at
To get in and out of the field and truck
Can be easily loaded. Also, normal working speed and
In addition to this work speed, low
Since the vehicle is equipped with a transmission capable of high-speed shifting,
As the body's running speed is slow, it follows the walk even when getting off
Because of the synergistic effect of these two,
Reliable operation can be performed, can respond quickly,
Latching and stopping are also possible at the drop-off position, so
Safe operations such as loading and loading on trucks can be performed.

[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. That is, the power from the engine 5 is transmitted to the front wheel 2 and the rear wheel 3 via the transmission so that the front wheel 2 and the rear wheel 3 can be driven.

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. Each tension pulley 23L, 23H
The tension arms 26L and 26H to which are attached are pivotally supported by a support shaft 27, and each of the tension arms 26L and 26H
6H, pins 28 and 29 are protrudingly provided at front and rear positions of the support shaft 27, and each front pin 28 has a switching link 30L,
A long hole 30A of one end of the 30H is fitted, and return pins 31L, 31H and one end of a 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 a 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 tension arm 26L causes the tension pulley 23L to move the low-speed 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 30H can be lowered, and the return spring 31H
As a result, the high-speed side tension arm 26H rotates to press the tension pulley 23H against the belt 22H, and tension is applied to the belt 22H to transmit high-speed power.

At one end of the clutch link 32, a loose fitting portion 3 loosely fitted to the rear pin 29 of the high / low speed tension arm 26.
2A is formed, and the other end is interlocked with the clutch pedal 42. The base 42 (boss portion) of the pedal 42 for engaging and disengaging the clutch is pivotally supported by a pivot shaft 43 fixed to the traveling vehicle body 4 below the step 44 so that the base thereof can be freely depressed. The claw portion 42A protrudes from the lower end. 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 to engage 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. Here, there is provided a main clutch for inputting / disconnecting the power of the engine 5 to / from the transmission, and this main clutch can be operated by the clutch pedal 42 in the riding position.

Reference numeral 46 denotes one operating tool (operating member) pivotally supported by the pivot shaft 43. The upper grip 46B is located sufficiently in front of the speed change lever 35 so that an operator (driver) who gets off the vehicle can get the grip 46B. It is arranged at a position where it can be easily turned. That is, the operating tool 46 is provided at a position in front of the step 44 and at a position where it 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 operation tool 46 has a grip 46B at an upper portion, and a claw 46A protrudes from a boss at the base similarly to the clutch pedal 42. The claw 46A also engages with the link 45 from above. 1, the clutch link 32 is pulled downward in FIG. 1 and both the low-speed side and the high-speed side tension arms 26 are rotated in the lifting direction against the return spring 31,
It is possible to turn off both high and low power.

That is, the operation 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.
The brake is operated, whereby one hand is put on the handle 6 and the other hand is put on the operating tool 46, the clutch is disengaged by the operation in the opposite direction, and the brake operation is performed, so that the vehicle is reliably dismounted. It is possible to operate with.

Reference numeral 47 denotes a guide member of the operation tool 46, which is fixed to the hood 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), a low-speed running state such as putting in and out of a field (over a ridge), loading and unloading on a truck, for example, 0.07
Speeds of m / sec to 0.1 m / sec are 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. (Disengagement operation of the main clutch). Therefore, in order to put the riding type rice transplanter in and out of the field, the driver must move the belt transmission 1
When the operation tool 46 is operated while the riding type rice transplanter is slowly moving with the speed 6 set to the low speed side, the moving speed can be further reduced or stopped. For the operation, the grip 46B is provided at a position 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 (braking device) 51 of a power transmission system. This brake device 51 is a brake means 54 that brakes a rotating shaft 53 that transmits power from the transmission case 17 to the rear wheel differential device 52.
And an operating means 55 for operating the brake means 54 with an operating tool 46. A braking device is provided for operating the front wheel 2 and the rear wheel 3 in conjunction with the disengagement operation of the main clutch 16 by the operating tool 46. -ing That is, there are provided a pedal 42 for operating the clutch at the boarding position, and an operating tool 46 for operating the clutch and the brake 51 operable at the getting off position, and the brake 5 operated by the operating tool 46 is provided.
1 is provided on a rear wheel drive shaft (power transmission shaft) 53 extending from the transmission, and this is a four-wheel stop brake that can operate the brake with a simple configuration to stop the rice transplanter 1. is there.

More specifically, the brake means 54 is a band brake or a disc brake attached to the traveling vehicle body 4, and the operation lever 56 is turned 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 via the latching tool 59, and the brake means via the operating lever 56. The operation tool 4 that can operate the power transmission shaft 53 to brake the power transmission shaft 53 and that can be manually operated at the disembarkation position
At 6, the vehicle body 4 can be stopped (four-wheel stop brake).

The operation of the first embodiment will be described in comparison with the conventional example. That is, a braking device that operates on the front wheels and the rear wheels in conjunction with the disengagement operation of the main clutch is provided. More specifically, the engagement and disengagement of the main clutch and the disengagement operation of the front clutch and the rear wheels are performed by the main clutch disengagement operation. Is provided with one operating member 46 that performs a braking operation of the braking device that operates at a time. The operating member 46 is provided at a position that can be operated at the getting-off position, so that it can be put in and out of the field and loaded and unloaded on the truck. It is easier and safer.

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 51 that operates on the front wheel 2 and the rear wheel 3 in conjunction with the disengagement operation of the main clutch can be provided.

The clutch pedal 42 and the operating tool 46 for operating the clutch and the brake can engage with the link 45 from the claw portions 42A, 46A from above. 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. In addition, by providing the operating tool 46 near the pedal 42, it becomes easy to link the clutch operation by the pedal 42 and the manual operation of clutch release.

FIGS. 6 and 7 show a third embodiment. The operating tool 46 is pivotally supported by a support shaft 27, and an arc-shaped plate 49 centered on the support shaft 27 is provided in the 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 faces and engages 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 getting-off 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. 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.

[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 rice transplanter 2 Front wheel 3 Rear wheel 5 Engine 15 Output shaft 16 Belt transmission (Main clutch) 17 Transmission case 18 Transmission shaft 23 Tension pulley 26 Tension arm 35 Shift lever 42 Clutch pedal 46 Operating tool 51 Brake (braking device)

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

Claims (1)

(57) [Claims] A clutch for interrupting engine power;
Riding paddy traveling machine with brake in transmission system
The operating device for operating the clutch can be operated at the boarding position.
A single operating device for operating the clutch and brake
Operation at the dismounting position to operate the clutch.
Be prepared separately from the implement, and enter the field at normal working speed and separately from this working speed.
Equipped with a transmission that can perform low-speed running shift conditions such as penetration
Riding paddy traveling working machine, characterized in that is.