JPH0620334Y2 - Working machine mounting device - Google Patents

Description

[Detailed Description of the Invention] (a) Field of Industrial Application The present invention relates to a rotary tiller mounted on the rear part of a tractor, and a work implement mounting device used when a seeder or a fertilizer applicator is attached to the rear part of the rotary tiller. It is a thing.

(B) Conventional Technology Conventionally, a technology in which a working machine mounting device for attaching a seeder and a fertilizer applicator to the rear part of the rotary tiller is provided is well known.

For example, Japanese Utility Model Publication No. 57-12806 and Japanese Utility Model Publication No. 53
For example, it is as disclosed in Japanese Patent Laid-Open No. 58113 or Japanese Utility Model Laid-Open No. 55-52903.

(C) Problems to be solved by the invention However, in the work machine mounting device provided at the rear of the conventional rotary tiller, the rotary tiller is
Although it is possible to adjust the position of the working machine to be mounted to the left and right and adjust the vertical position, it is impossible to adjust the vertical angle formed by the working machine and the ground.

In sowing machines and fertilizer applicators, shallow trenches are dug in the soil surface with a trencher to fertilize and sow inside, so it is desirable to be able to adjust the angle between these working machines and the ground. It had been done.

The present invention provides a working machine mounting device that allows the working machine to be adjusted not only horizontally and vertically but also vertically at a working machine.

(D) Means for Solving the Problems The object of the present invention is as described above, and the configuration for achieving the object will be described below.

A frame bar 9 is attached to the rear part of the rotary tiller R in the left-right direction, and a left-right adjustment barrel 7 that can be slidably adjusted in the left-right direction is inserted into the frame bar 9 and is fixed to the left-right adjustment barrel 7. A vertically adjustable cylinder rod 6 that can be vertically adjusted is fitted into the fitting cylinder 10, and an angle adjustment body 2 is mounted on an angle adjustment bracket 5 provided on the vertically adjustable cylinder rod 6 to adjust a rotation angle of a pivot shaft 4 in a horizontal direction. A slidable support cylinder 1 that is freely pivoted and on which the working machine mounting rod 28 is slidable right and left is fixedly provided.

(E) Embodiment The purpose and construction of the present invention are as described above. Next, the construction of the embodiment shown in the accompanying drawings will be described.

FIG. 1 is a perspective view showing a state in which a seeder is attached to the work implement mounting device of the present invention, and FIG. 2 is a perspective view of a portion of a left / right adjusting barrel 7, an up / down adjusting barrel 6, and an angle adjusting bracket 5, FIG. 3 is a perspective view of an embodiment in which the work implement mounting rod 25 is a quadrangular pipe, FIG. 4 is a perspective view of a disassembled state of the work implement attaching device of the present invention, and FIG. FIG. 6 is an exploded perspective view of an embodiment in which a pipe is used, and FIG. 6 is a side view showing a state in which the angle adjuster 2 is adjusted to vertically adjust the angle of the working machine.

This will be described with reference to FIG.

A rotary tiller R is attached to the rear part of the tractor and can be rotated up and down by a work implement lifting device of the tractor.

An eight-row sowing machine is attached to the rear part of the rotary tiller R via the working machine mounting device of the present invention.

The seeding machine is provided with a seed tank 30, a grooving device, a pressure roll 33, etc. for each line, and is supported by a working machine support body 29 having a front end inserted into a working machine mounting rod 28.

The rotation of the drive grounding wheel 31 obtains power, and the chain case 32 transmits the power to drive the feeding device under the seed tank 30.

The present invention is a work implement mounting rod 28 into which a work implement support 29 is inserted.
By vertically rotating the sowing machine, the whole of the seeding machine can be vertically rotated around the working machine mounting rod 28, and the angle of the grooving device with respect to the soil can be adjusted.

An embodiment in which the working machine mounting rod 28 is a hexagonal pipe will be described with reference to FIGS. 2, 4, and 6.

At the rearmost part of the rotary tiller R, a tail wheel support rod 40 for supporting the tail wheel 41 is extended to the left and right, and the hitch 8 of the present invention can be fitted into the center portion of the tail wheel support rod 40. The hitch fitting part is always provided. After the hitch fitting portion is fitted into the hitch 8 from the front, the hitch pins 20 and 21 are fitted from above to fix the rotary tiller R and the work implement mounting device.

As shown in FIG. 5, between the hitch fitting portion and the hitch 8, a backing plate 36 is provided on the rear surface, and a spacer 35 is also provided from the lower surface. The plate 36 is tightened accordingly. Press the bolts 22 and 23 to set the spacer 35 to 2
By pressing the bolts 37, 37 of the book, the hitch 8 and the hitch fitting portion are fixed to each other without any play.

A frame bar 9 is fixed to the hitch 8 fixed to the hitch fitting portion of the rotary tiller R in this way in the left-right direction orthogonal to the traveling direction.
Further, the left and right adjusting barrel 7 is slidably inserted in the left and right by loosening the tightening bolt 17.

A right and left adjusting barrel 7 also having a rectangular tube shape is externally fitted to a frame bar 9 formed as a square pipe, a contact plate 11 is inserted into the gap between the left and right adjusting metal bars 7, and a bolt opened in the contact plate 11. The tightening bolt 17 is inserted through the insertion hole, and is screwed into a nut fixedly mounted on the left / right adjusting barrel 7 so that the tip of the tightening bolt 17 presses the plate inside the contact plate 11 to adjust the left / right adjusting barrel 7 and the frame. It is tightened with the play between the bars 9 eliminated.

Therefore, the left and right adjusting barrel 7 can be adjusted left and right on the frame bar 9, and when the sowing machine and the fertilizer applier are displaced relative to the position of the rotary tiller R, the position of the left and right adjusting barrel 7 is adjusted. Can be adjusted.

A loose fitting cylinder 10 is vertically fixed to the rear portion of the left-right adjusting cylinder 7. A vertically adjustable cylinder rod 6 is inserted into the loose fitting cylinder 10 so that the position thereof can be vertically adjusted.

After the height of the seeder is adjusted by the position of the vertical adjustment cylinder rod 6, the loose fitting cylinder 10 and the vertical adjustment cylinder rod 6 are fixed by the tightening bolts 18 and 19.

An angle adjustment bracket 5 made of a "U" -shaped metal fitting that is open rearward is fixed to the lower end of the vertical adjustment cylinder rod 6.

Then, the angle adjusting body 2 in which the pivot support tube 3 is fixed at the upper and lower substantially central positions is fitted and inserted into the “U” shape of the angle adjusting bracket 5, and the angle adjustment bracket 5 is inserted inside the pivot support tube 3. The angle adjusting body 2 is pivotally supported so as to be pivotable up and down in the vertical direction by inserting the pivotal support shaft 4 inserted into the side hole of the.

The angle adjustment bracket 5 and the angle adjustment body 2 are formed by the pivot shaft 4.
Since the angle adjusting body 2 pivotally rotates in a state in which the angle adjusting body 2 is pivotally supported, the angle adjusting bolts 14 and 15 are screwed on the upper and lower sides of the angle adjusting body 2.

By changing the amount of protrusion of the angle adjusting bolts 14 and 15 to the front and back, the angle adjusting body 2 rotates back and forth around the pivot shaft 4 to adjust the up and down and front and back angles of the seeder.

The tips of the angle adjusting bolts 14 and 15 are configured to contact the inside of the angle adjusting bracket 5.

In this way, the sliding support cylinder 1 is fixedly mounted on the rear surface of the angle adjusting body 2 whose angle can be adjusted.

In FIGS. 2, 4, and 6, the sliding support cylinder 1 is
The working machine mounting rod 28, which is formed of a square pipe and is also formed of a hexagonal pipe, is inserted into the sliding support cylinder 1,
After the position of the work implement mounting rod 28 is adjusted by the tightening bolt 16, the sliding support cylinder 1 and the work implement mounting rod 28 are integrated.

Then, the hexagonal pipe portion at the tip of the working machine support 29 is fitted into the working machine mounting rod 28 and fixed by the tightening bolts.

On the other hand, in the drawings of FIGS. 3 and 5, the sliding support cylinder 12 formed of a square pipe is also fixed to the rear surface of the angle adjusting body 2. In the case of the sliding support cylinder 12, a working machine mounting rod 25 constituted by a square pipe with a backing plate 13 interposed on the rear surface is fitted.

Correspondingly, the tightening bolt 16 is inserted into the plate 13 and the surface of the contact plate 13 is pressed by the tightening bolt 16 to fix the square pipe work implement mounting rod 25.

In this case, the front end of the working machine support 29 is also constructed by a square pipe.

(F) Effect of the Invention Since the present invention is configured as described above, it has the following effects.

Firstly, the working machine mounting device is provided with the angle adjusting body 2 pivotally supported by the pivot shaft 4 so that the working machine mounting rod 28 can be vertically adjusted in the vertical direction. Even if the angle becomes unsuitable for the ground, the optimum angle of the seeder can be obtained by rotating the part of the angle adjusting body 2 about the pivot shaft 4 for adjustment. It has become possible.

Secondly, the sowing machine and the fertilizer applicator are provided with a grooving device, and depending on the angle of the grooving device, a case may occur in which sufficient grooves cannot be dug during sowing or fertilization. As described above, by rotating the angle adjusting body 2 around the pivot shaft 4 to adjust the vertical angle of the sowing machine and the fertilizer applicator, it is possible to dig a groove required for sowing and fertilization. It is a thing.

[Brief description of drawings]

FIG. 1 is a perspective view showing a state in which a seeder is attached to the work implement mounting device of the present invention, and FIG. 2 is a perspective view of a portion of a left / right adjusting barrel 7, an up / down adjusting barrel 6, and an angle adjusting bracket 5, FIG. 3 is a perspective view of an embodiment in which the working machine mounting rod is a square pipe, FIG. 4 is a perspective view of the working machine mounting device of the present invention in an exploded state, and FIG. 5 is a working machine mounting rod 25 as a square pipe. 6 is a side view showing a state in which the angle adjusting body 2 is adjusted to vertically adjust the angle of the working machine. 1, 12 ... Sliding support cylinder 2 ... Angle adjustment body 3 ... Grooving device 4 ... Pivot shaft 5 ... Angle adjustment bracket 6 ... Vertical adjustment cylinder rod 7 ... Horizontal adjustment barrel 8 ... Hitch 9 ... Frame bar 10 ... Play Fitting cylinder 11 ... Abutment plate 12 ... Sliding support cylinder

Claims (1)

[Scope of utility model registration request] 1. A frame bar 9 is attached to the rear part of a rotary tiller R in the left-right direction, and a left-right adjusting barrel 7 which can be slidably adjusted in the left-right direction is inserted into the frame bar 9, and the left-right adjusting barrel 7 is inserted. A vertically adjustable tube rod 6 that can be adjusted up and down is fitted into a loosely fitted tube 10 that is fixedly mounted on the vertical adjustment tube rod 6, and an angle adjustment body 2 is mounted on an angle adjustment bracket 5 provided on the vertically adjustable tube rod 6.
2. A working machine mounting device, comprising a slidable support tube 1 fixedly mounted on the angle adjusting body 2 so that the working machine mounting rod 28 can slide left and right.