JPH0796840A - Riding type work vehicle - Google Patents

Abstract

PURPOSE:To facilitate stopping operation of a travel car body when an operator gets off the travel car body and carries out direction control operation. CONSTITUTION:An installing part to connect an auxiliary handle lever to operate a steering link mechanism from outside of a car so as to be mountable and demountable freely, is arranged in this steering link mechanism to interlock/ connect a steering wheel operable from a boarding position with/to direction control wheels, and an operation member A is provided on a travel car body so as to operate simultaneously a main clutch mechanism C arranged in the travel car body and a brake B for travel, and a connecting part 23b to connect a travel stopping lever 28 operated from outside of the car so as to be mountable and demountable freely, is arranged in this operation member A.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a riding type work vehicle such as a riding type rice transplanter and a relatively small tractor.

[0002]

2. Description of the Related Art In a riding type work vehicle for agriculture, for example,
Access to and from the fields was done by directly overcoming the ridges or by traveling on the slope formed on the ridges. Incidentally, this slope is generally formed in a steep slope in order to effectively use the field scene. In addition, when using a transport vehicle such as a truck to return to and from the farm field, loading and unloading of agricultural work vehicles to and from the loading platform of the transport vehicle is performed by traveling on the step board passed to the loading platform of the transport vehicle. Was there. And these are performed by the driver riding on the traveling vehicle and driving. However, when the traveling vehicle body inclines considerably, the driver may feel anxiety and fear. Therefore, it is desirable to get off the traveling vehicle body and drive.

Therefore, in the past, for example, the actual Kaisho Sho 52-
As disclosed in Japanese Patent No. 76032, a detachable auxiliary handle lever for operating the steering of the traveling vehicle from outside the vehicle is attached to the pitman arm so as to extend to the front of the traveling vehicle, so that the vehicle can be operated while descending from the traveling vehicle. There was one that could be operated in the right direction.

[0004]

However, according to the above-mentioned prior art, even if the driver tries to stop the traveling vehicle while he / she is descending from the traveling vehicle and performing a steering operation, the driver is positioned in front of the traveling vehicle. Therefore, a stop operation device (for example, a brake pedal) originally provided in the traveling vehicle body
There is a risk that the vehicle may be difficult to reach and difficult to operate, and that the operation may be delayed and the traveling vehicle body may be collided with another object and damaged.

An object of the present invention is to make it possible to easily perform a stopping operation of a traveling vehicle body when the vehicle is descending from the traveling vehicle body and a steering operation is being performed.

[0006]

In order to achieve the above object, according to the present invention, a steering link mechanism for interlockingly connecting a steering wheel and a steering wheel that can be operated from a riding position is provided with the steering link mechanism from outside the vehicle. An attachment member for detachably connecting an auxiliary handle lever for operation is provided, and the traveling vehicle body is equipped with an operating member capable of simultaneously operating the main clutch mechanism and the traveling brake provided on the traveling vehicle body, and The operating member is provided with a connecting portion for detachably connecting a traveling stop lever operated from outside the vehicle.

[0007]

According to the present invention, when the steering wheel of the traveling vehicle body is operated by the auxiliary handle lever after getting off from the traveling vehicle body, the traveling stop lever is provided so that it can be easily reached from the operation position of the auxiliary handle lever. By connecting to the operating member, if you want to stop the traveling vehicle body while performing steering operation with the auxiliary handle lever, you can operate the operating member to operate the operating body to prepare the traveling vehicle body. The traveling vehicle body can be stopped by simultaneously activating the provided main clutch mechanism and the traveling brake. For example, when loading an agricultural work vehicle onto the platform of a transport vehicle, descend from the traveling vehicle body and operate the steering of the traveling vehicle body with the auxiliary handle lever, and place the traveling vehicle body on the walking board that has been passed toward the platform of the transportation vehicle. When the traveling vehicle body reaches the proper position of the luggage carrier, the traveling vehicle body is stopped by operating the traveling stop lever within the reach of the auxiliary handle lever.

[0008]

As described above, according to the present invention, even if the auxiliary handle lever is used to steer the traveling vehicle body at a position where it is difficult to reach the stop operation tool originally provided in the traveling vehicle body, it is easy. It is possible to easily and quickly stop the traveling vehicle body by operating the traveling stop lever that is within reach of the vehicle. You can now easily avoid collision with other objects. Also, since the main clutch mechanism and the traveling brake are operated simultaneously, the engine will not be stopped when the traveling vehicle is stopped, so if the traveling vehicle is stopped on a slope such as a slope or step board, restarting the vehicle Can be done quickly. Moreover, by operating the traveling stop lever, the main clutch mechanism and the traveling brake that are originally provided in the traveling vehicle body are actuated to stop the traveling vehicle body, so that when a new traveling stop mechanism is provided. In comparison, it can be made advantageous in terms of manufacturing and cost.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a riding type rice transplanter will be described below with reference to the drawings. FIG. 1 shows the entire side surface of the riding type rice transplanter. As shown in FIG. 2, the front half of the traveling vehicle body 1 is provided with front wheels 2 as steering wheels. A gasoline type engine 4 is mounted in the hood 3 of the traveling vehicle body 1, and a main clutch mechanism C for connecting and disconnecting power transmission from the engine 4 is linked to the engine 4. An operation panel 5 is provided at the rear of the hood 3, and the operation panel 5 has various switches such as a steering handle 6 that can be operated from the riding position, a key switch 7, and various instruments. It is equipped. The key switch 7 is configured to turn off the ignition circuit of the engine 4 to stop the engine at the power-off position. As shown in FIGS. 3 and 5, the steering handle 6 is provided with a steering shaft 8 which is rotatable integrally with the steering handle 6, various gears incorporated in a steering gear box 9, and a steering link mechanism 10. It is linked to the front wheel 2. The steering link mechanism 10 connects the gear shaft 9a protruding downward from the steering gear box 9 with the pitman arm 11 rotatable integrally with the front wheel 2, the knuckle arm 12 rotatable integrally with the front wheel 2, and the pitman arm 11 and the knuckle arm 12 coupled with each other. It is composed of a tie rod 13. That is, the steering force from the steering handle 6 is used to steer the front wheels 2 with the pivot point of the knuckle arm 12 as a fulcrum.

As shown in FIG. 4, the pitman arm 1
A mounting portion 15 made of a round steel material that detachably connects an auxiliary handle lever 14 for operating the steering link mechanism 10 from the outside of the vehicle is welded to the vehicle 1, and is put in and out of a field or loaded on a bed of a transport vehicle. In the case of lowering or the like, the auxiliary handle lever 14 is fitted onto the mounting portion 15 and connected by the pin 16, so that the steering handle can be operated by descending from the traveling vehicle body 1. As shown in FIGS. 2 to 5, the auxiliary handle lever 14 is composed of an operating portion 14A made of an L-shaped round steel material and a connecting portion 14B made of steel pipe material. The connecting portion 14B has two pairs of pin insertion holes. A plurality of 14a are provided at a predetermined pitch angle (for example, 30 °) centered on the tube axis center and at equal intervals along the tube axis direction. Then, the common hole 15a of the mounting portion 15
The vertical angle of the auxiliary handle lever 14 can be changed by changing the pin insertion hole 14a of the connecting portion 14B that connects with the pin (for example, the pitch angle is 30 °).
If, you can change the vertical angle in 12 different directions).
In addition, reference numeral 14b in the drawing denotes a grip for preventing slipping made of a resin material.

As shown in FIG. 6, the main clutch mechanism C is
A belt type transmission system 18 provided between the output shaft 4a of the engine 4 and the input shaft 17a of the transmission case 17, a tension arm 19 and a tension arm 19 for switching the belt type transmission system 18 between a tensioned state and a relaxed state. The clutch pedal 21 is linked through a release wire 20, and the transmission of power from the engine 4 is cut off by depressing the clutch pedal 21. Although illustration is omitted, the belt type transmission system 18 is set to two systems having different gear ratios, and the tension arm 19 sets one of the two types of belt type transmission systems 18 in a tensioned state by operating the auxiliary transmission lever. Each of them is configured so as to be able to perform high and low speed shifting by operating the auxiliary shift lever.

As shown in FIGS. 2, 3 and 6, below the step 22 of the traveling vehicle body 1, a pivot shaft 23 pivotally supported by the vehicle body frame 1A is provided so as to extend to the left and right of the traveling vehicle body 1. The clutch pedal 21 is pivotally supported on the left end side of the pivot shaft 23, and the left brake pedal 24 and the right brake pedal 25 are pivotally supported on the right end side of the pivot shaft 23, respectively. When the left brake pedal 24 is depressed, the left rear wheel 2 of the traveling vehicle body 1
6 is a brake B for traveling that applies a braking action to 6, and
To the right brake pedal 25, traveling brakes B, which apply a braking action to the right rear wheel 26 by depressing the right brake pedal 25, are linked to each other via rods 27. The pivot shaft 23 has a clutch pedal 21 and left and right brake pedals 24, 25 associated with the rotation of the pivot shaft 23.
A hook-shaped operation portion 23a that presses is pin-connected so as to be integrally rotatable. In addition, the left end of the pivot shaft 23, the pivot shaft 23
A connecting portion 23b is provided to detachably connect the travel stopping lever 28 for operating the. Then, when the vehicle body 1 descends from the traveling vehicle body 1 and steering operation of the traveling vehicle body 1 is performed by the auxiliary handle lever 14, the traveling stop lever 28 is connected to the connecting portion 23.
If the vehicle body 1 is desired to be stopped by connecting to b, the main clutch mechanism C and the left and right traveling brakes B can be simultaneously operated by operating the traveling stop lever 28. Therefore, it is possible to easily stop traveling from outside the vehicle. That is, the pivot shaft 23 and the pivot shaft 2
An operating member 23a that is pin-connected to 3 and a connecting portion 23b of the pivot shaft 23 constitute an operating member A that simultaneously operates the main clutch mechanism C and the left and right traveling brakes B.

As shown in FIG. 1, at the rear portion of the traveling vehicle body 1, a seedling planting device 29 for planting several rows and a fertilizer application device 30 are vertically movable. And, as also shown in FIG.
The ground leveling float 31 of the seedling planting device 29 is provided with a groove cutting plate 32 for making a groove on one side of the planting seedling, and a grooving device 33 for dropping and supplying the fertilizer from the fertilizer applying device 30 to the groove. .
Further, the leveling float 31 is provided with a grooving plate 34 for making a groove on the side of the planting seedling on the side opposite to the grooving plate 32,
As shown in FIG. 8, by grooving on the side opposite to the grooving plate 32 side of the planted seedlings with the grooving plate 34, one direction generated when grooving only with the grooving plate 32 It prevents the seedlings from falling and the unevenness of the rows due to the flow of mud.

[Other Embodiments] Other embodiments will be listed below. The riding type work vehicle may be, for example, a small tractor or a riding type lawnmower. The attachment portion 15 may be provided on any part of the steering link mechanism 10, and may be provided on the tie rod 13, for example. The connecting portion 23b of the operating member A and the travel stopping lever 28
You may make it connect with with a set bolt. Similar to the auxiliary handle lever 14, the extension angle of the travel stopping lever 28 may be changed and adjusted by connecting the operating member A to the connecting portion 23b. A connecting portion 23b for connecting the traveling stop lever 28 may be provided at the right end of the pivot shaft 23, or at both the left end and the right end of the pivot shaft 23 so that the operation can be performed depending on the operation situation and familiarity. You may make it possible to connect to the easier one. The traveling stop lever 28 may be fixed at an operation position where the main clutch mechanism C and the left and right traveling brakes B are operated. The travel stop lever 28 may be provided with an engine stop switch that stops the engine 4 by turning off the ignition circuit of the engine 4.

It should be noted that reference numerals are given in the claims for convenience of comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

[Figure 1] Overall side view of the riding type rice transplanter

FIG. 2 is a side view showing the front of the riding type rice transplanter.

FIG. 3 is a front view showing the configuration of an operating member.

FIG. 4 is an exploded perspective view showing a connection between an auxiliary handle lever and a mounting portion.

FIG. 5 is a plan view of a steering link mechanism.

FIG. 6 is a perspective view showing linkage of operation members.

FIG. 7 is a plan view of a leveling float.

FIG. 8 is a perspective view showing a grooving state by a grooving device and a grooving plate.

[Explanation of symbols]

 1 Traveling Vehicle 2 Steering Wheel 6 Steering Handle 10 Steering Link Mechanism 14 Auxiliary Handle Lever 15 Attachment Part 23b Connection Part 28 Travel Stop Lever A Operating Member B Travel Brake C Main Clutch Mechanism

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display location B62D 7/08 A 49/00 F

Claims (1)

[Claims] 1. A steering link mechanism (10) for interlockingly connecting a steering wheel (6) and a steering wheel (2) operable from a riding position, for operating the steering link mechanism (10) from outside the vehicle. A mounting portion (15) for detachably connecting the auxiliary handle lever (14) is provided so that the main clutch mechanism (C) and the traveling brake (B) provided on the traveling vehicle body (1) can be simultaneously operated. The traveling body (1) is equipped with the member (A), and the operation member (A) is provided with a connecting portion (23b) for detachably connecting a traveling stop lever (28) operated from outside the vehicle. There is a passenger work vehicle.