JPH099712A - Standing device for tractor working machine - Google Patents

Abstract

PURPOSE: To provide a standing device for a tractor working machine which is linked to the rear part of the tractor as freely attachable and detachable, not necessitating an adjustment by a tool bar as conventional devices when supporting the working machine with a standing device at a posture for its attaching or detaching and also preventing the working machine from a rotation centering around the standing device. CONSTITUTION: This standing device for a tractor working machine is constituted by installing a standing device 17 for supporting the working machine 2 and used in the case of attaching or detaching the working machine 2 at the rear of a chain case 10 arranged at one side of the working machine 2 and is capable of changeably taking a supporting position where a stopper 22 installed at the standing device 17 is rotated to the lower direction and protruded to the side of the working machine 2 for limiting the rotation of the working machine, and an accommodating position where the stopper is rotated in the upper direction by retreating from the side of the working machine 2 for canceling the limitation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stand device for a tractor working machine which is used when the working machine is attached to or detached from a rear portion of a tractor.

[0002]

2. Description of the Related Art Generally, in a tractor working machine in which a working machine such as a rotary cultivator is detachably connected to a rear portion of a tractor, the working machine is supported in a proper mounting / removing posture when the working machine is mounted / removed. There are known ones provided with a stand, ones holding a work machine by a tail wheel, and the like. However, conventionally, as shown in FIG. 21, a tail wheel a or a stand is attached to a tool bar c that is moved up and down by operating the adjustment handle b. For this reason, in order to support the work machine in a proper attachment / detachment posture, it is necessary to operate the operation handle b one by one to adjust the toolbar c. Moreover, when performing upright work or tail wheel work using the tool bar c, the angle of the tool bar c is different from that when the work machine is attached or detached. This is necessary, and there is a problem that the adjustment operation is troublesome and an erroneous operation is likely to occur. On the other hand, as shown in FIG. 22, such a stand d is attached to the chain case e of the working machine f.
If it is provided on the side, it is not necessary to adjust the tool bar, but when the work machine is detached, the work machine f rotates around the stand d on one side of the work machine f, so that the work machine can be easily removed. There was another problem that I could not.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances to solve the conventional problems, and its purpose is to provide a stand for supporting a working machine with a working machine. A stand device for a tractor work machine that is provided on the rear side of a chain case that is disposed on one side, does not require adjustment of the toolbar, and that does not rotate the work machine around the stand when the work machine is removed. Is to provide.

[0004]

In order to solve the above-mentioned problems, the technical means taken by the present invention is a tractor working machine in which a working machine is detachably connected to the rear part of a tractor. At the rear of the chain case
A stand for supporting the work machine used when attaching and detaching the work machine is provided, and the stand is rotated downward so that the stopper provided on the stand projects toward the work machine and restricts the rotation of the work machine. It is characterized in that it is configured to be replaceable between a position and a storage position in which the stopper retracts from the working machine side and releases the restriction and is rotated upward.

[0005]

Therefore, according to the present invention, the stand for supporting the working machine is provided at the rear of the chain case arranged on one side of the working machine. It is possible to support the work machine in the attachment / detachment posture by merely moving the stand downward to the support position without adjustment. And the stopper protruding from the stand at the supporting position to the working machine side restricts the rotation of the working machine, so even if the stand is provided on one side of the machine, the It does not rotate. Also, after connecting the work machine to the tractor, if the stand is rotated to the storage position,
Since the stopper provided on the stand retracts from the working machine side to release the rotation restriction of the working machine, the stopper does not hinder the work.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will now be described in detail with reference to the accompanying drawings. First, in FIGS. 1 to 7, 1 is a tractor, 2 is a rotary cultivating type working machine that is detachably connected to a rear portion of the tractor 1, and the working machine 2 has a gear case 3 in a central portion of a machine body frame. Is provided, and the top mast 4 is fixedly provided on the upper part thereof. The top mast 4
The front upper part of the is connected to the auto hitch 5 of the three-point link mechanism provided on the tractor 1 via the connecting pin 6, and the rear upper part of the top mast 4 is equipped with tail wheels, ridges, etc. The tool bar 7 is supported by a screw type adjusting device 8 so as to be vertically adjustable. 9 is a handle for the adjustment.

Reference numeral 10 denotes a chain case disposed on one side of the working machine 2, and the chain case 10 is fixed to one end of an arm 11 extending from the side surface of the gear case 3 in the left-right direction. The rotary tiller 12 supported by the side plate provided at the other end of the arm 11 and the chain case 10 is rotationally driven by the interlocking mechanism incorporated in the chain case 10. 13 is a tilling nail. Reference numeral 14 is a main cover for covering the rotary tilling part 12, and a rear cover 16 is pivotally attached to the rear end of a rotating frame 15 provided on the upper surface of the main cover 14 and which rotates forward and backward. A work 2 having a center of gravity position behind the chain case 10 is configured.

A stand 17 for supporting the working machine 1 in an appropriate mounting / removing posture, which is used when the working machine 2 is mounted / removed on / from the tractor 1, is provided behind the chain case 10. That is, reference numeral 18 denotes an attachment member fixed to the side plate of the main cover 14 at the rear of the chain case 10, and the attachment pipe 20 is supported via a pivoting fulcrum 19 in the front-rear direction provided on the attachment member 18. The pipe-shaped stand 17 inserted into the pipe 20 is rotatable between a supporting position for supporting the working machine 2 rotated downward and a storage position rotated upward. The stand 17 at the supporting position has a mounting hole 18 formed in the mounting member 18.
a and a fixing hole 17a provided in the stand 17 with a fixing pin 2
It is fixed by inserting 1. A plate-shaped stopper 22 that projects toward the working machine 2 side at the supporting position is fixed to the stand 17, and the rotation of the working machine 2 is restricted by the stopper 22 that abuts on the tilling claw 13. .
Reference numeral 23 is a ground plate. Further, the stand 17 is provided with a replacement hole 17b in a direction orthogonal to the fixing hole 17a. If the stand 17 is rotated upward and the fixing pin 21 is replaced with the replacement hole 17b, the stand 17 is removed. It can be switched to the storage position. At this time, since the replacement hole 17b is orthogonal to the fixed hole 17a, the stand 17 is rotated 90 degrees with respect to the mounting member 18, and accordingly, the stopper 22 is retracted from the working machine 2 side in the front-rear direction. Then, the rotation restriction of the working machine 2 is released.

FIGS. 8 to 13 show a structure in which the rotating frame 15 pivotally mounted to the rear cover 16 can be prevented from being deformed even if the rear cover 16 accidentally collides with a ridge or the like during work. . That is, 24 is the main cover 14
A pair of left and right nylon rollers disposed on the upper surface of the front and rear at a predetermined interval, the left and right rotating frames 15 being supported by the rollers 24 so as to be rotatable back and forth.
The shaft 24 is press-fitted into the support bracket 25 fixed to the main cover 14, and the rollers 24 are mounted rotatably on both ends thereof. Reference numeral 27 is a U-shaped rubber plate provided between the rear end of the main cover 14 and the lower end of the rotating frame 15, and 28 and 29 are holding plates fixed with bolts and nuts. The rotating frame 15 is connected to the arm link 30 pivotally supported at the substantially central portion of the top mast 4 and the rod 3
1. Also, the arm link 30
An operation lever 32 is pivotally supported at the tip of the operation lever 32, and a guide plate 33 of the operation lever 32 is fixed to the top mast 4. The operation lever 32 is operated to rotate the rotating frame 15 back and forth to move the rear cover 16. Can be pulled out to the rear. The rotating frame 15 includes the left and right rollers 2
Arc-shaped turning rail 3 formed in a cross-sectional shape that holds 4
4, the rod 31 is connected to a square pipe 35 that connects the rear ends of the rotary rails 34. Further, a U-shaped bracket 37 that supports the suspension rod 36 of the rear cover 16 is fixedly provided on the upper surface of the rotating frame 15, and the bracket 37 rotates the rotating frame 15 largely to move the rear cover 16 up. The rollers 24, 24 whose front ends are located in the front and rear even when pulled out in a skimmed state
Of the rear cover 16 is a reinforcing member when the rear cover 16 accidentally collides with a ridge or the like.

14 to 20 show a ridger which can accommodate a lid cover removed from the rear cover.
That is, 38 is a detachable lid cover provided on the rear cover 40 of the working machine 39, 41 is a ridger that removes the lid cover 38 and attaches it to the working machine 39, and the ridger 41 expands upward. It is formed by the left and right side plates 42, 42. Two storage plates 44, which form the insertion groove 43 of the lid cover 38, are provided on the inner surfaces of the side plates 42, 42 so as to face each other. Further, since the lid cover 38 is formed in a substantially triangular shape, if the lid cover 38 removed from the rear cover 40 is turned upside down, the insertion grooves 43 formed on the inner surfaces of the side plates 42, 42 that expand upward are provided on the left and right sides. The rim can be inserted and stored.

In the construction as described above, when the work implement 2 is now attached to or detached from the tractor 1, the stand 17 provided at the rear of the chain case 10 is rotated downward so that the attachment hole 18a provided at the attachment member 18 is formed. If the fixing pin 21 is inserted into the fixing hole 21a provided in the stand 17, the stand 17
Can be fixed to the support position, so that the working machine 2 having the center of gravity behind the chain case 11 can be supported in a stable state. In the supporting position, the stand 17
The stopper 22 provided at the position protrudes toward the working machine 2 side and restricts the rotation of the working machine 2. For this reason, the stand 17 is attached to the working machine 2
Even if it is provided on one side, when the working machine 2 is removed, the working machine 2 does not rotate around the stand 17 and can be easily removed. On the other hand, the working machine 2 is connected to the tractor 1
After connecting to, the fixing pin 21 is once pulled out, and then the stand 17 is rotated upward and rotated 90 degrees about the axis to move the fixing pin 21 into the fixing hole 18a and the replacement hole 17b of the stand 17. If replaced, the stand 17 can be replaced with the storage position. At this time, the stopper 22 provided on the stand 17 retracts from the working machine 2 side to release the rotation restriction of the working machine 2, so that the plowing work can be performed as it is, and the stopper 22 in the front-rear direction projects outward. Since it does not, it is possible to prevent dragging of grass straw and the like.

In the structure shown in FIGS. 8 to 13, even if the rear cover 16 pulled out accidentally collides with a ridge or the like during the scooping work, the bracket 37 extending to the intermediate portion between the rollers 24, 24 is provided. Since it serves as a reinforcing member, it is possible to prevent the rotating frame 15 pivotally attached to the rear cover 16 from being deformed. 14 to 20, since the removed lid cover 38 can be housed between the side plates 42, 42 of the ridger 41 at the time of the ridge work, it is possible to prevent the lid cover 38 from being lost. Can be prevented.

[0013]

In summary, the present invention is a tractor working machine in which a working machine is detachably connected to the rear part of a tractor, and the working machine is mounted / removed behind a chain case arranged on one side of the working machine. And a support position for supporting the working machine used when the working machine is rotated, and the stand is rotated downward so that a stopper provided on the stand projects toward the working machine to restrict rotation of the working machine. Since the stopper is retractable from the working machine side and released to regulate, it can be transferred to the storage position rotated upward, so when attaching or detaching the working machine, the stand provided at the rear of the chain case, If the support device is rotated downward, the working machine can be supported in the attachable / detachable posture without adjusting the toolbar. At this time, since the stopper protruding from the stand at the supporting position to the working machine side restricts the rotation of the working machine, the working machine does not rotate around the stand and the working machine can be easily attached and detached. After connecting the working equipment, if you move the stand to the storage position that has been rotated upwards, the stopper provided on the stand retracts from the working equipment side and releases the rotation restriction of the working equipment, so that you can cultivate it smoothly. It is the one that can do the work.

[Brief description of drawings]

FIG. 1 is a side view of a tractor working machine with a stand as a supporting position.

FIG. 2 is a side view of the tractor working machine with the stand in the storage position.

FIG. 3 is an explanatory view of the operation of the stand.

FIG. 4 is a side view of the stand in a supporting position.

[FIG. 5] Same as the rear view

FIG. 6 is a side view of the stand in the storage position.

[Fig. 7] Same as the rear view

FIG. 8 is a side view showing a state where the rotating frame is rotated forward.

FIG. 9 is a side view showing a state in which the rotating frame is rotated rearward.

FIG. 10 is a side view of the rotating frame.

11 is a sectional view taken along the line AA of FIG.

FIG. 12 is a rear view of the operation lever.

FIG. 13 Same as above

FIG. 14 is a rear perspective view of a working machine provided with a lid cover.

FIG. 15 is a rear perspective view of the working machine with the ridger attached.

FIG. 16 is a rear perspective view showing a stored state of the lid cover.

FIG. 17 is a side view of the ridger side plate.

[FIG. 18] Same as the rear view

FIG. 19 is a side view of the ridger side plate showing a state in which the lid cover is stored.

[FIG. 20] Same as the rear view

FIG. 21 is a side view of a tractor working machine showing a conventional example.

FIG. 22 Same as above

[Explanation of symbols]

 1 tractor 2 working machine 10 chain case 17 stand 22 stopper

Claims (1)

[Claims] 1. A tractor working machine in which a working machine is detachably connected to a rear portion of a tractor, and a work used when the working machine is mounted / removed behind a chain case arranged on one side of the working machine. A stand for supporting the machine is provided, and the above-mentioned stand is a support position where the stopper provided on the stand protrudes toward the working machine side and rotates downward to restrict the rotation of the working machine, and the stopper retracts from the working machine side. A stand device for a tractor working machine, wherein the stand device is configured to be replaceable with a storage position which is rotated upward to release the restriction.