JPS6236685Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a steering device for a traveling working machine such as a transplanter, and the present invention relates to a steering device for a traveling working machine such as a transplanter. The main purpose is to improve straight-line workability by enabling the clutch or brake to be operated without removing the foot from the clutch.

For example, if you are transplanting on a contour line or on a slope using a self-propelled riding transplanter, if you run out of seedlings, you will need to disengage the clutch and apply the brakes, each time removing your foot from the steering pedal. This is done by stepping on the clutch pedal and brake pedal.

In this case, when the driver's foot was removed from the steering pedal, the angle of the steering wheel could change significantly depending on the working conditions at that time.

When replenishing the seedlings on hand and continuing the work, they had to move forward a little and then correct the bends, which resulted in poor straightness and the transplanted state sometimes took on the shape of a dogleg when viewed from above.

The present invention was devised in view of such conventional problems, and includes a steering wheel 2 and a driving wheel 3, and has a pedal 35 on the side of the fuselage 6 at a position where foot operation is possible from the driver's seat 7. In the traveling working machine 1 in which the steering wheel 2 can be steered by pivoting the steering arm 39 39A, the brake pedal 37 or the clutch pedal 34 is placed on the side of the steering arm 39, and the steering pedal 35 is operated by foot movement. At the same time, the brake pedal 37 side and the brake 21 or the clutch pedal 34 side and the clutch 16 are connected to the inner wires 43B, 46B and the outer wires 43A, 46A.
Furthermore, the outer wires 43A, 46A of the Bowden wires 43, 46 are connected to the steering arms 39, 39 side, and the inner wires 43B, 46B are connected to the brake pedal 37 side or the clutch side. The Bowden wires 43 and 46 connected to the pedal 34 side include
It is characterized by having a slack portion that absorbs the amount of operation of the steering pedal 35 in the steering direction.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

1 and 2, reference numeral 1 denotes a traveling working machine, exemplified by a transplanter, with a pair of left and right steering wheels 2 on its front side, and a pair of left and right drive wheels 3 on its rear side. It is rotatably supported around horizontal axes of axles 4 and 5.

Reference numeral 6 denotes a fuselage frame that is rectangular in plan view, and a driver's seat 7 is mounted on the driving wheel 3 side of the fuselage 6.

8 is an installed engine, and a transmission case 9 is extended and fixed at the rear end of the fuselage 6 in the center of the vehicle width in an upward slope.
A mounting table 10 extended and fixed to the rear of the transmission case 9
The engine 8 is mounted on the engine 8, and 11 is its fuel tank.

A gear transmission (not shown) is built into the transmission case 9, and the gear transmission and the engine 8 are interlocked via a wrapped transmission body 12.
3 is a transmission case of the wrapped transmission body 12, which connects the side wall of the gear transmission case 9 and the side wall of the engine 8.

The output side of the gear transmission in the gear transmission case 9 is a pair of left and right horizontal shafts 14, and a pair of left and right auxiliary transmission cases 15, which are swingable about the horizontal shafts 14 as fulcrums and have built-in winding transmission bodies, descend from the rear. installed in an inclined manner,
The axle 5 is pivotally supported at the bottom of each sub-transmission case 15 in an outwardly projecting manner.

Reference numeral 16 designates a main clutch, which in this example is a tension clutch that can tension and release the wrapped transmission body 12, and has a horizontal pivot pin 1 on the fixed side as shown in FIG.
A tension pulley 19 is rotatably provided on a tension arm 18 which is pivotally connected via a tension arm 7, and a tension spring 20 urges the winding transmission body 12 in the tensioning direction.

21 is a brake that brakes the gear transmission, and 22 is a brake cam lever thereof.

Reference numeral 23 denotes a drive wheel lifting device, which includes a fixed guide plate 24 provided behind the driver's seat 7, an operating lever 25 that can be freely engaged with and fixed to the guide plate 24, and a drive wheel lifting device that operates in conjunction with the operating lever 25. It consists of interlocking rods 26 etc. which are pivotally connected to the pair of left and right sub-transmission cases 15, and by operating the operating lever 25 in the front and back direction, the pair of left and right drive wheels 3 can be freely raised and lowered in opposite directions with the horizontal shaft 14 as a fulcrum. , its raising and lowering position is controlled by the operation lever 25.
The position can be fixed by engaging with the guide plate 24.

It should be noted that if the drive wheels 3 are configured to be movable up and down as shown in the illustrated example, it will be advantageous since it can be used on slopes, but the drive wheels 3 do not necessarily need to be movable up and down and may be of a fixed type.

Reference numeral 27 denotes a steering wheel support frame, which is fixed to the front part of the aircraft body 6. Cylindrical bodies 28 are respectively fixed to the left and right ends of the support frame 27 in a downwardly inclined shape. A wheel mounting shaft 29 is rotatably inserted around the shaft and fixedly adjustable in the height direction,
The steering wheel 2 is rotatably supported by a bifurcated holder 30 connected to the lower part of the steering wheel mounting shaft 29 via the axle 4, and the steering wheel 2 is of a caster type.

A tie rod 31 is pivotally connected between arms 32 protruding from a pair of left and right bifurcated holders 30, and preferably has a turnbuckle structure so that it can be expanded and contracted.

33 is the left pedal device, clutch pedal 3
4 and a steering pedal 35, and 36 is a right side pedal device, which consists of a brake pedal 37 and a steering pedal 35.

First, the left pedal device 33 is
As shown in the figure, a steering arm 39 is pivotally attached to the side of the fuselage 6 which can be operated by foot from the driver's seat 7 via a horizontal pivot shaft and extends downward.
A pedal 35 made of a bar protruding outward from the lower end of the pedal 9.
The steering arm 39 and the arm 40 fixed to the left steering wheel mounting shaft 29 are connected to the connecting rod 4.
Pivotally connected with 1. Also, the steering arm 39 side,
In this example, the clutch pedal 3 is attached to the horizontal axis of the pedal 35.
The base of 4 is pivotally connected via a bearing for relative rotation.
2, and an inner wire 43 connecting the clutch pedal 34 and the tension arm 18 of the main clutch 16 to the clutch pedal 34 side in this example.
A spring 44 is provided on the inner side as shown in FIG. 7, and the tension is applied against the spring 44. The arm 18 can be operated by foot movement in the loosening direction.

That is, a clutch pedal 34 is provided above the steering pedal 35 in a vertically parallel relationship as shown in FIG. 4, and the steering pedal 35 can be operated independently by the heel of the foot, and the clutch pedal 34 can be operated independently by the toe of the foot. It is provided in

Next, the right pedal device 36 is operated as shown in FIGS.
As shown in the figure, a steering arm 39 is attached to the side of the fuselage 6 at a position where foot operation is possible from the driver's seat 7 via a horizontal pivot shaft.
A pedal 35 made of a bar material is provided at the lower end of the steering arm 39 in a manner that projects outwardly and is detachably attached, and the steering arm 39 and the right steering wheel mounting shaft are connected to each other. An arm 38 fixed to 29 is pivotally connected by a connecting rod 45. Also, the steering arm 39
In this example, the base of the brake pedal 37 is pivotally connected to the horizontal axis of the pedal 35 via a bearing so that the brake pedal 37 and the cam lever 22 of the brake 2 are connected to the cam lever 22 of the brake 2 in this example. They are interlocked and connected via a Bowden wire 46 consisting of an inner wire 46B connected to the side and an outer wire 46A connected to the steering arm 39 side.

That is, a brake pedal 37 is provided above the steering pedal 35 in a vertically parallel relationship as shown in FIG. 6, and the steering pedal 35 can be operated independently by the heel of the foot, and the brake pedal 34 can be operated independently by the toe of the foot. It is provided in

Here, when the steering arm 39 is operated in the steering direction, the Bowden wires 43 and 46 are connected to the brake pedal 37 and the clutch pedal 34, respectively.
It has a slack part in the middle that absorbs the amount of operation of the steering arm 39 so that the steering arm 39 is not operated.

In addition, in the figure, 47 is a trencher, 48 is a planting device, and 49 is a soil covering device. Behind the trenching device 47 is a planting device 48, and behind both sides of the planting device 48 is a soil covering device 49. A ring 50 is provided.

That is, a transplant frame 52 is provided in a backward extending manner so as to be swingable about a horizontal axis 51 at the front end of the lower abdomen of the body 6, and an elastic support body 53 is provided between the rear part of the transplant frame 52 and the body 6, and the transplant is performed. The frame 52 is urged in the direction of ground contact.

A pair of left and right soil cover wheels 50 are rotatably supported on the transplanting frame 52 via an inclined horizontal shaft 54 so that the spacing between them is narrow on the ground side and wide on the anti-ground side. A planting disc 55 and a planting arm 56 are rotatably mounted in front of the inclined horizontal shaft 54 of the transplanting frame 52 via a horizontal horizontal shaft 57. The inclined horizontal shaft 54 and the horizontal horizontal shaft 57 are linked together by a winding body 57, making it possible to drive the planting device 48.

Reference numeral 58 denotes a seedling feeding device, which is located in front of the driver's seat 7 and includes a first conveyor 59 that feeds the seedlings A in the horizontal direction and also pinches and conveys them in the vertical direction;
It consists of a second conveyor 60, etc., which clamps and conveys the seedlings to the planting device 48, and in this embodiment, the horizontal horizontal shaft 57 and a pair of left and right bevel gear transmission bodies 61 are interlocked by a winding transmission body 62. The second conveyor 60 and the like can be driven via the bevel gear transmission body 61 in synchronization with the planting operation.

Further, reference numeral 63 denotes a manual handle, which is provided in a forward-protruding manner on the steering wheel support frame 27 and is located between the steering wheels 2, and which is connected to the clutch 16 and the handle via a Bowden wire 65 by operating a hand lever 64 (not shown). The brake 21 can be operated.

Reference numeral 66 denotes a manual clutch operating lever, which is located on one side of the driver's seat 7 and is connected to a Bowden wire 67 and a spring 68.
The clutch 16 can be operated via.

Further, 69 indicates a seedling box mounting stand.

Next, the operation of the above embodiment will be explained.

When the steering wheel 2 and the drive wheel 3 run in the longitudinal direction of the ridge B, which has already been formed, a planting groove is formed in the center of the ridge B by the groove making device 47, and seedlings are placed in the planting groove. The seedlings A sequentially sent from the supply device 58 are grabbed by the planting device 48, and then transplanted with the roots of the seedlings facing down, and a series of operations are performed in which the seedlings A are covered with soil using the soil covering device 49.

During this work, in order to steer the traveling work machine 1 along the longitudinal direction of the ridge B, the driver on the driver's seat 7 must place both feet on the left and right pedal devices 33 and 36, respectively. Meanwhile, the driver manually feeds the seedlings and operates the manual clutch operating lever.

That is, in order to move the traveling work machine 1 to the left, in this example, when the right steering pedal 35 is pushed in the depression direction with the heel of the right foot, the steering arm 39 swings forward about the pivot 39A. In this case, the outer wire 46A is connected to the steering arm 39, and the Bowden wire 46 has a slack portion, so there is no relative positional variation between the steering arm 39 and the brake pedal 37, and the steering arm 39 does not swing. The mounting shaft 29 on the right side is rotated counterclockwise in FIG. Leftward movement is carried out, and when the traveling work machine 1 is to be moved to the right, it is carried out by depressing the left steering pedal 35 with the heel of the left foot.

Furthermore, when the steering wheel 2 can be steered by retracting and moving the left and right connecting rods 38 and 45 (rearward pulling in Figure 1), the left pedal is used for leftward movement, and the right pedal is used for rightward movement. It can be made possible.

If seedling retention occurs during work, the main clutch 16 is disconnected and the brake 21
It is necessary to stop the traveling work machine 1 and park it by applying the same action, but in such a case, it is necessary to put the heel of the foot on the left and right steering pedals 35, 35 and steer it in the direction in which the toe is depressed. Therefore, the main clutch 16 can be disconnected and the brake 21 can be operated via the Bowden wires 43 and 46.
When the vehicle stops once and starts traveling again, the steering wheel 2 can be immediately aligned along the ridge B.

Furthermore, when the predetermined transplanting work is completed and the traveling work machine 1 is to be turned, the operator gets off the driver's seat 7 and lifts the manual handle 63 to turn the work machine 1.
At this time, the engine 8 etc. are used as a counterweight to facilitate lifting.

The present invention is as described above, and the brake pedal 3
7 and the brake 21 or the clutch pedal 35 and the clutch 16 are connected by Bowden wires 43 and 46, so the connection is easier than connecting with links, rods, etc., and moreover, the degree of freedom in connection is greater. You can improve.

Further, since the brake pedal 37 or the clutch pedal 35 is provided in a position where the foot can be moved from the steering pedal 35, the brake pedal 37 or the clutch pedal 35 can be moved without removing the foot from the steering pedal 35.
5 can be operated, allowing quick operation switching.

Furthermore, even though the brake pedal 37 or the clutch pedal 35 can be moved with the foot on the steering pedal 35, the Bowden wires 43, 46
The outer wires 43A, 46 of the steering arm 39
The inner wires 43B and 46B are connected to the brake pedal 37 side or the clutch pedal 34 side, and since the Bowden wires 43 and 46 have slack parts, even if the steering pedal 35 is operated, the clutch pedal will not work. 34, brake pedal 3
The pedals 7 are not linked to any operation and can be operated independently, so operating one pedal does not link the other pedal to perform its function, which is really useful.

[Brief explanation of the drawing]

Fig. 1 is an overall schematic side view of an embodiment of the present invention exemplified by a transplanter, Fig. 2 is a partially omitted plan view of the same, Fig. 3 is a front view of the left pedal device, Fig. 4 is a plan view of the same, and Fig. 5 is a front view of the left pedal device.
The figure is a front view of the right pedal device, Figure 6 is a plan view of the same,
FIG. 7 is a schematic front view of the clutch. 1... Traveling work machine, 2... Steering wheel, 3... Driving wheel, 6... Airframe, 7... Driver's seat, 16... Clutch, 21... Brake, 34... Clutch pedal, 35... Steering pedal, 37... Brake pedal.

Claims (1)

[Scope of Claim for Utility Model Registration] A steering wheel 2 and a drive wheel 3 are provided, and a steering arm 39 having a pedal 35 is pivotably mounted 39A on the side of the fuselage 6 at a position where foot operation is possible from the driver's seat 7. In the traveling work machine 1 that can steer the steering wheel 2, a brake pedal 37 or a clutch pedal 34 is pivoted 42 on the steering arm 39 side at a position where it can be operated by foot from the steering pedal 35, and the brake pedal 37 side and the brake 21 or the clutch pedal 34 side and the clutch 16 using inner wires 43B, 4
6B and outer wires 43A, 46A, the outer wires 43A, 46A of the Bowden wires 43, 46 are connected to the steering arms 39, 39 side, and the inner wires 43B, 46B is connected to the brake pedal 37 side or the clutch pedal 34 side, and the Bowden wires 43 and 46 have
A steering device for a traveling work machine characterized by having a slack portion that absorbs the amount of operation of a steering pedal 35 in a steering direction.