JPH10178813A - Machine body inclination adjustment device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To dissolve problems that a traveling wheel is not only moved in a vertical direction with a driving shaft as a turning center but also moved in the front-to-back direction of a machine body, the weight balance of the machine body is lost and traveling is disturbed by the conventional inclination adjustment device of the machine body by a wheel elevating and lowering mechanism. SOLUTION: In a walking type moving farm machine for which the traveling wheel 40 is supported to a wheel spindle 27 fixed to a machine body frame and extended to a side part, a supporting plate 63 is fixed to the wheel spindle 27, a transmission case 43 for supporting the wheel 40 through a swing transmission case 42 is mutually pivotally connected to the supporting plate 63 and the traveling wheel 40 is made drivable through the transmission case 43 from the swing transmission case 42. Also, an extension/contraction adjustment means 66 is interposed between the transmission case 43 and the supporting plate 63 in a vertical direction and the traveling wheel 40 is made freely movable and adjustable in the vertical direction by the operation of the extension/ contraction adjustment means 66.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a walking type mobile agricultural machine,
For example, the present invention relates to a machine inclination adjusting device of a transplanter for planting seedlings such as vegetables and tobacco in ridges.

[0002]

2. Description of the Related Art Conventionally, in a walking-type mobile agricultural machine having left and right running wheels, one of the left and right running wheels is independently raised and lowered, so that one of the running wheels is moved relative to the other running wheel. 2. Description of the Related Art A configuration has been put into practical use in which a height is changed and adjusted, and a machine is run while maintaining a horizontal state of a body in a left-right direction on an inclined ground to perform work. Then, in order to drive the traveling wheels, the end of the drive shaft extending from the engine to the side of the body that is rotationally driven through the transmission is attached to the upper part of the axle case, and the wheels are attached to the lower part of the axle case. Attached to enable the running wheels to be driven through the transmission chain of the axle case, etc., and to connect the telescopic drive mechanism such as a hydraulic cylinder between the fuselage side and the axle case to extend and retract the telescopic drive mechanism. Thus, the vertical position has been changed by swinging about the drive shaft.

[0003]

However, in the conventional device for adjusting the inclination of the body by means of the wheel lifting mechanism, the traveling wheels only swing in the vertical direction because the running wheels swing about the drive shaft. Instead, it will also move in the longitudinal direction of the aircraft. Therefore, if the vertical difference between the left and right running wheels is large on a slope, the position of the left and right wheels is greatly shifted in the front-rear direction, and the weight balance of the aircraft is lost,
The inconvenience of hindering driving has occurred.

[0004]

The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described. That is, in a walking-type mobile agricultural machine in which the running wheels 40 are supported on wheel supports 27 fixed to the body frame and extending laterally, the support plate 6 is supported on the wheel supports 27.
3 and the swing transmission case 42 is attached to the support plate 63.
A transmission case 43 supporting the wheels 40 is pivotally connected to each other via the transmission case 43, so that the traveling wheels 40 can be driven by the swing transmission case 42 via the transmission case 43, and the transmission case 43 and the support plate 63 The expansion and contraction adjusting means is interposed in the vertical direction, and the running wheels can be vertically moved and adjusted by the operation of the expansion and contraction adjusting means.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment in which the walking type mobile agricultural machine of the present invention is used as a transplanter will be described. 1 is an overall plan view of the transplanter, FIG. 2 is a left side view of the same in the traveling direction,
3 is a right side view with respect to the traveling direction, FIG. 4 is a front view thereof, FIG. 5 is a side sectional view showing the fuselage inclination adjusting device of the present invention in an extended position, and FIG. It is.

First, an overall configuration of a transplanter equipped with the power transmission device of the present invention will be described with reference to FIGS. 1, 2, 3 and 4. An engine 2 is mounted and fixed to a front portion of the body frame 1, and a fuel tank 3 and a muffler 4 are attached to an upper portion of the engine 2. A transmission case 5 is provided behind the engine 2, and a rear portion of the body frame 1 is attached to the transmission case 5 and protrudes forward, and a bumper 6 is provided at a front end thereof. Belt cover 8 in which a transmission belt for transmitting power from the output shaft 7 of the engine 2 to the input shaft of the transmission case 5 is provided.
Is provided.

An upper portion of a chain case 10 in which a transmission chain is mounted is mounted on the other side surface of the transmission case 5, and an axle 11 projects in one direction from the lower portion of the chain case 10. The axle 11 has driving wheels 12
Are mounted, and the drive wheel 12 and the engine 2 and the transmission case 5 are arranged in substantially the same range in the vertical direction when viewed from the front, thereby forming the one-wheel control device 13.

A change lever 14 is provided on the upper part of the transmission case 5 to change the speed of the transmission rotation from the engine 2 to the drive wheels 12, and a base of a handle 15 is mounted on the upper part of the transmission case 5. . The handle 15 is provided with a tension clutch lever 16 for operating the tension roller of the power transmission belt of the belt cover 8 to intermittently transmit power from the engine 2 to the transmission case 5 by the power transmission belt, and an engine accelerator adjustment lever 17. Further, an auxiliary handle 18 is provided so that an intermediate portion of the bifurcated handle 15 is connected in an arch shape so that an operator can grasp the implant 15 during the transplantation operation.

[0009] On the side of the one-wheel management machine 13, there is provided a transplant portion 20 located above the ridge 19. The transplant part 2
Reference numeral 0 denotes a transplant opening device 21 and a seedling supply device 22. A front frame 23, a rear frame 24, a pair of left and right support frames 25 and 26 for connecting the front frame 23 and the rear frame 24 back and forth, It is supported by the support frame 71. The front support frame 71 and the rear frame 24 are respectively supported by the front wheel support shaft 27 and the rear support shaft 70 extending to one side of the one-wheel control device 13,
The front wheel support shaft 27 and the rear support shaft 70 are configured to be slidably fixed in the left-right direction.

The rear frame 24 is provided with the one-wheel control machine 13.
In a normal use state, the base is held by a support frame 31 having a base mounted thereon in place of a transmission chain case of a tilling rotary mounted and fixed to a rear end of the transmission case 5, and a fan 32 provided at a rear portion of the support frame 31. To move up and down, and tightened by a tightening handle 33 at an appropriate position to fix the position.

The seedling feeder 22 includes a rotating plate 34 driven by the power of the engine 2 via a transmission mechanism, a seedling cup 35 attached to the outer periphery of the rotating plate 34, and a seedling dropper for dropping seedlings. It comprises a ring-shaped guide plate 36 whose portion corresponding to the position 61 is missing, and a shutter 37 that opens and closes the bottom of the seedling cup 35 by coming into contact with and separating from the inner surface of the guide plate 36.

The implant opening device 21 includes a support frame 25.
A plurality of rotating plates are supported over a rotating plate 38 pivotally supported by the support frame 26 and a rotating plate 39 pivotally supported by the support frame 26.
The rotation plates 38 and 39 have their rotation axes decentered in the front-rear direction. The rotating plate 39 is driven and rotated by the power of the engine 2 via a transmission mechanism, and is rotated.
1 goes up and down.

The running wheels 4 are mounted on the front wheel support shaft 27.
The traveling wheel 40 is driven by the power of the engine 2 via a transmission shaft 41, a swing transmission case 42, and a transmission mechanism in the transmission case 43. The traveling wheel 40 can be adjusted in the vertical direction by turning the adjustment handle 44 of the expansion / contraction adjusting means 66 described later. The tread can be changed by attaching and detaching the extension support shaft to and from the front wheel support shaft 27.

A pair of left and right pressure-reducing wheels 45 and 46 are attached to the rear portions of the support frames 25 and 26 so as to be vertically rotatable, and are suspended and supported by a rod 47 having an upper end connected to the rear frame 24. It is biased downward.

The support frame 31 includes a drive wheel 12
An auxiliary wheel 49 located at the rear of the vehicle is attached. The auxiliary wheel 49 can be adjusted vertically by an adjustment handle 50, can swing in the left and right directions, and can be set in a fixed state by tightening the fixed handle 51, and can swing. In this case, the stopper 52 regulates the inward direction at a fixed position. A guide wheel 53 is mounted in front of the auxiliary wheel 49, and the guide wheel 53
9 rolls along the sides.

The seedling holders 54 and 55 for placing and storing seedlings to be supplied to the seedling cup 35 are provided above the one-wheel management machine 13 and the transplanting part 20, respectively. The table 55 is rotatable toward the outside of the machine during the transplantation operation. Further, a locking portion 58 of a rope knob 57 of a recoil starter 56 of the engine 2 is provided on the seedling holder 54 above the one-wheel management machine 13.

Next, a mechanism for vertically adjusting the running wheels 40 of the present invention will be described in detail. A support pipe 62 on which the front wheel support shaft 27 is fitted is fixed by pins, bolts or the like so that the left and right positions can be adjusted. A support plate 6 is attached to the support pipe 62.
3 is fixed in the front-rear direction, the outer cylinder 64a of the expansion / contraction adjusting means 66 is fixed to the support plate 63 in the vertical direction, and the inner cylinder 64b is inserted into the outer cylinder 64a from below.
The screw shaft 44a is screwed on the upper part of the screw shaft 44b.
Is rotatably supported on the upper part of the outer cylinder 64a. Therefore, the inner cylinder 64b is raised and lowered by rotating the adjustment handle 44. However, the expansion / contraction adjusting means 66 is not limited to the screw shaft type, but may be a hydraulic cylinder or an electric cylinder.

A transmission shaft 41 is rotatably supported at a rear portion of the support plate 63, and a front portion of a swing transmission case 42 is further pivotally supported on the transmission shaft 41.
An upper portion of the transmission case 43 is pivotally supported by a transmission shaft 67 at a rear portion thereof, and is connected so as to be bent in a “C” shape. The swing transmission case 42 on the transmission shafts 41 and 67
A sprocket is fixed inside each of the chains 68
Power is transmitted via the transmission case 43, and the traveling wheels 40 are driven via a sprocket and a chain arranged in the transmission case 43. The lower end of the inner cylinder 64b is pivotally connected to a stay 65 fixed on a middle part of the transmission case 43.

In such a configuration, the adjusting handle 4
When the inner cylinder 64b is extended as shown in FIG. 5, the swing transmission case 42 and the transmission case 43 are rotated around the transmission shafts 41 and 67 as pivot points, respectively. Reference numeral 43 moves substantially downward, so that the aircraft can be adjusted in the horizontal direction on a slope descending to the right. When the adjustment handle 44 is rotated in the reverse direction to reduce the inner cylinder 64b as shown in FIG. 6, the swing transmission case 42 and the transmission case 43 are set with the transmission shafts 41 and 67 as pivot points. Is rotated, the transmission case 43 moves substantially upward, and the aircraft body can be adjusted in the horizontal direction when inclined upward to the right. In this manner, horizontal correction of the aircraft on an inclined ground or the like is enabled. At the same time, even if the transmission cases 42 and 43 are raised and lowered, power can be transmitted from the transmission shaft 41 to the traveling wheels 40 via a chain, a sprocket, or the like.

[0020]

As described above, the present invention has the following advantages. That is, the case supporting the wheels with respect to the body of the vehicle is divided into a swing transmission case and an axle case while allowing the rotation of the drive shaft driven by the engine to transmit power to the traveling wheels. , The connecting part of both cases is configured to be able to bend freely, and the transmission case is moved up and down by the expansion and contraction mechanism, so that the bending state of both cases is changed so as to move up and down. The forward and backward movement distance L (FIG. 5) of the wheel is extremely small, and the up and down movement distance can be increased. Therefore, even when the vertical difference between the left and right running wheels is made large on a slope, the positions of the left and right wheels are not largely shifted in the front and rear direction, the weight balance between the front and rear and right and left of the aircraft is constant, and a good running state is achieved. It could be maintained and the working condition could be kept good.

[Brief description of the drawings]

FIG. 1 is an overall plan view of a transplanter.

FIG. 2 is a left side view in the traveling direction.

FIG. 3 is a right side view in the traveling direction.

FIG. 4 is a front view of the same.

FIG. 5 is a side view, partly in cross-section, with the airframe tilt adjusting device of the present invention in an extended position.

FIG. 6 is a side view in the same reduced position.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Body frame 2 Engine 27 Wheel support shaft 40 Running wheel 42 Swing transmission case 43 Transmission case 63 Support plate 66 Expansion / contraction adjustment means

Claims (1)

[Claims] 1. A walking-type mobile agricultural machine in which running wheels are supported on a wheel support shaft fixed to a body frame and extending laterally, a support plate is fixed on a wheel support shaft, and a swing transmission case is mounted on the support plate. A transmission case supporting wheels is pivotally connected to each other via the transmission case, and the traveling wheels can be driven from the swing transmission case via the transmission case, and expansion and contraction adjusting means is provided between the transmission case and the support plate. An apparatus for adjusting the inclination of a fuselage, which is vertically interposed and is capable of moving and adjusting a traveling wheel in an up and down direction by an operation of said expansion and contraction adjusting means.