JPH0340085Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The invention is typified by a management machine configured to perform soil-filling work, etc. using a rotary device. The present invention relates to a walking type rotary work machine in which a rotary device is connected to the rear end of the machine body and a grounding tail wheel is connected to the rear of the rotary device, and the ground level of the rotary device is adjusted by vertically adjusting the grounding tail wheel.

[Conventional technology]

In this type of walking rotary work machine,
The rotary device was installed at the lower end of the rotary transmission case on both left and right sides. Therefore, since the area corresponding to the width of the transmission case becomes uncultivated land, a residual tillage treatment plate is provided to treat this uncultivated area. by the way,
Conventionally, in order to provide this residual tillage treatment plate, a bracket was extended forward from the mounting frame of the ground tail wheel, and the residual tillage treatment plate was inserted through a long hole provided on the treatment plate side with respect to the bracket. It was configured so that the vertical position could be adjusted (for example, in the 1980s).
No. 36328).

[Problems that the idea is trying to solve]

However, if the configuration is such that only the vertical position can be adjusted, as shown in FIG. 9, in order to adjust the rotary device 6 to the ground level, the ground tail wheel 8 is adjusted vertically using the grounding point P of the traveling wheel 3 as a fulcrum. Because of this shape, the attitude of the residual tillage treatment board toward the ground changes every time the rotary device 6 is adjusted to the ground level.

The purpose of the present invention is to provide a system in which the ground action posture of the residual tillage processing board can be kept constant regardless of the adjustment of the ground level of the rotary device by simply making reasonable changes to the mounting structure of the remaining tillage processing board. At the point.

[Means for solving the problem] The characteristic configuration according to the present invention is that a residual tillage processing plate is rotatably attached to the pivot shaft of the grounding tail wheel, and
A rocking adjustment mechanism is provided between the support stay of the ground tail wheel and the residual tillage treatment plate, which allows the residual cultivation treatment plate to be vertically adjusted and fixed around the axis of the pivot shaft. Its functions and effects are as follows.

[Effect]

In other words, based on FIG. 9, when considering the change in the attitude of the remaining tillage processing board 17 due to the vertical adjustment of the ground-contacting tail wheel 8, the attitude of the remaining tillage processing board relative to the ground with the rotation axis X of the tail wheel as the center. It can be seen that the is changing.

Therefore, by attaching the residual tillage processing plate to the rotation axis X so that it can be adjusted and fixed in vertical swing around the axis X, the residual tillage processing plate can be shaken every time the ground level of the rotary device is adjusted. It can be adjusted dynamically to set the desired ground attitude.

[Effect of idea]

As a result, stable residual tillage treatment can be performed regardless of the adjustment of the ground level of the rotary device, and improvements to this can be made by simply adding a posture change adjustment mechanism by utilizing the residual tillage treatment plate.

〔Example〕

As shown in Fig. 3, an engine 1 and a transmission case 2 are provided at the front of the aircraft, and left and right running wheels 3, 3 are pivotally supported at the lower end of the transmission case 2, and a control handle 4 is turned toward the rear. At the rear end of the extended fuselage, there is a top-cut type plowing rotary 6 pivotally supported by a transmission case 5 and a grounding tail wheel 8 supported by a rotary cover 7 that also serves as a support frame.
A walk-behind tiller is constructed by connecting the two.

As shown in FIGS. 3 to 5, the bracket 9 is extended forward from the transmission case 5,
A mounting rod 12 to which a gong-shaped scattering prevention plate 11 is fixed is fitted into a boss 10 fixed to the extending end so as to be adjustable up and down. Furthermore, front covers 13, 13 are provided that are suspended from the rotary cover 7, and the lower ends of the pair of left and right front covers 13, 13 are connected to the scattering prevention plate 11 and a backing plate 25 fixed to the mounting rod 12. The covers 13, 13 are supported stably by being held between them, and the third
As shown in the figure, in addition to performing up-cut tillage, as shown in Fig. 6, with the control handle 4 reversed, the direction of movement of the aircraft is set so that the tail wheel 8 is in front, and down-cut tillage is performed. In this case, the cover 13 can be firmly supported even when the soil thrown up by the tillage rotary 6 collides with the soil.

As shown in FIGS. 1 and 3, a support stay 26 supports a groove-shaped frame 14 that pivotally supports the ground tail wheel 8
The support stay 26 is inserted into the support boss 16 fixed to the rotary cover 7, so that the ground tail wheel 8 can be vertically adjusted and fixed. The pivot shaft 15 for the grounding tail wheel 8 is extended laterally outward, and the groove-shaped stay 18, which firmly supports the residual tillage treatment plate 17, is pivotally supported on the extending portion of the pivot shaft 15, and The processing plate 17 is configured to be able to swing up and down around the axis X of the pivot shaft 15 (that is, the rotation axis X of the ground tail wheel 8).

On the other hand, to explain in detail the swing adjustment mechanism 27 for the residual tillage processing plate 17, a mounting frame 28, which pivots the corner member 19 to rotate around the horizontal axis Y, is attached to the groove-shaped frame 14 and then laterally outwardly. This corner member 19 is provided with a through screw hole along an axis perpendicular to the axis Y, and a long adjustment screw shaft 20 is screwed into the corner member 19.
This screw shaft 20 has an operation handle 21 at its upper end, and a fork-shaped member 22 is fitted onto its lower end to prevent it from coming off so as to allow rotation of the screw shaft 20 around its axis. is attached to the groove-shaped stay 18 so as to be relatively rotatable, and the residual tillage treatment plate 17 is configured to be vertically swingable and adjustable around the rotation axis X by adjusting the rotation of the screw shaft 20. There is. Therefore, even when the level of the tillage rotary 6 relative to the ground is adjusted, the remaining tillage processing plate 17 can be adjusted to swing up and down to be changed and fixed to a predetermined posture relative to the ground.

[Another example]

○B As shown in FIG. 7 and FIG.
The pivot shaft 15 is connected to one end of the pivot shaft 15 of
A plate 23 with a cam mechanism 23A is pivotally supported to be swingable left and right around an axis Z perpendicular to an axis X, and an operating lever 24 is fixed to this plate 23. A guide plate 29 is extended from the groove-shaped frame 14 to this lever 24.
4 is engaged with the guide groove 29A of the guide plate 29. The cam mechanism 23A is set to have different distances from the axis Z to the working surfaces 23a and 23b that contact and act on the side plate 18A of the groove-shaped stay 18, with the working surface 23a on the long distance side
is acting, the pressing friction force of the working surface 23a prevents the remaining tillage processing plate 17 from freely swinging, and when the working surface 23b on the short distance' side is acting, the working surface is substantially 23b is the side plate 18A
Since the remaining tillage processing plate 17 is not in contact with the plate 17, it is set to allow free rocking of the remaining tillage processing plate 17. Therefore, the method of use is to freely swing the remaining tillage processing board 17 by operating the operating lever 24, and after confirming the ground contact state, rotate the operating lever 24 to fix the remaining tillage processing board 17 in a predetermined position. be able to.

(B) The rotary tiller 6 may be replaced by a rotor for plowing soil, and the machine may be configured to perform other work than tilling.

[Brief explanation of drawings]

The drawings show an embodiment of the walking rotary working machine according to the present invention, and FIG. 1 is a side view showing the installed state of the residual tillage processing board, FIG. 2 is a plan view showing the installed state of the residual tillage processing board, and FIG. Figure 3 is an overall side view, Figure 4 is a plan view showing the front cover, Figure 5 is a rear view showing the front cover,
Fig. 6 is an overall side view showing the backward working state, Figs. 7 and 8 show another embodiment of the residual tillage processing board,
The figure is a plan view, FIG. 8 is a side view, and FIG. 9 is a schematic side view showing a state in which a conventional residual tillage processing board is attached. 3... Traveling wheel, 6... Rotary device, 8...
Ground tail wheel 8, 15... Pivot shaft, 17... Remaining tillage treatment plate, 26... Support stay, 27... Swing adjustment mechanism, X... Rotation axis center.

Claims (1)

[Scope of utility model registration request] A rotary device 6 is connected to the rear end of the body on which the running wheels 3 are pivotally supported, and a grounding tail wheel 8 is connected to the rear of the rotary device 6, and the ground level of the rotary device 6 is adjusted by vertically adjusting the grounding tail wheel 8. In the walk-behind rotary working machine, the grounding tail wheel 8 is
The residual tillage treatment plate 17 is rotatably attached to the pivot shaft 15 of the support stay 2 of the ground tail wheel 8.
6 and the remaining tillage processing plate 17, a swinging adjustment mechanism 27 is provided which allows the remaining tillage processing board 17 to be vertically adjusted and fixed around the axis X of the pivot shaft 15. Type rotary work machine.