JPH0738761B2 - Locking structure for rear cover of rotary working machine - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elastic flexible rear cover hooking structure attached to a rear end of a main cover for covering a rotary claw of a rotary working machine from above.

(Prior Art) In a rotary working machine connected to an agricultural tractor, side covers are generally attached to the left and right ends of a main cover that covers a rotary claw from above, and an elastic flexible bend is provided at a rear end of the main cover. It can be attached with a rear cover or front end.

(Problems to be solved by the invention) By the way, if the rear cover is constantly drooping, the rear cover may not be needed, and the rear cover may get in the way due to work such as internal filling, external filling, and ridge collapse in reverse. For this reason, the length of the rear cover cannot be made too large in the related art, and conversely, the performance is lowered in leveling and leveling work that requires the rear cover.

Therefore, an object of the present invention is to equip a sufficiently long rear cover to improve the performance in leveling and leveling work, and by folding the rear cover upward, the workability can be improved when the rear cover is not needed and the existing structure can be improved. The purpose of the present invention is to provide a rear cover hooking structure for a rotary working machine that can secure the folded state of the rear cover with a simple structure using the above parts.

(Means for Solving Problems) In order to solve the above problems and achieve the object, the present invention has side covers attached to the left and right ends of a main cover that covers a rotary claw from above, and a rear end of the main cover. In a rotary working machine in which a flexible and flexible rear cover is attached at the front end, a rod member extending in the left-right direction is attached to the rear end of the rear cover, and the left and right ends of the rod member are attached from the left and right sides of the rear cover. At the rear end of the upper part of the side cover, which is projected, a substantially U-shaped upper part is opened.
The rear cover is provided with an engaging portion that locks the left and right ends of the rod member in a state where the rear half of the rear cover is bent over the front half, and the outer side surface of the side cover can be rotationally adjusted at a lower portion. A pivotally mounted rear side cover is provided so as to extend rearward, and the rear side cover is pivotally adjusted to bring the upper inner side surface into contact with the left and right ends of the rod member hooked by the engaging portion to move the rod member. It is characterized by fixing.

(Operation) When the rear cover 61 is not required, the left and right ends of the rod member 81 that is bent at the rear half of the rear cover 61 on the front half and attached to the rear end are provided at the upper portion of the side cover 41. Since it suffices to hang it on the engaging part 45, it is possible to improve workability such as roughening, internal build-up, external build-up, and ridge collapse in reverse, and a sufficiently long rear cover 61 is equipped because it can be folded. Therefore, the performance in leveling work can be improved.

Further, the rear side cover 51, which is provided on the outer surface of the side cover 41 and which can be rotationally adjusted at a lower portion, is rotationally adjusted so that the inner surface of the upper portion is hooked to the engaging portion 45 of the upper portion of the side cover 41.
If the rod member 81 is fixed by abutting against the left and right ends of 81, the folded state of the rear cover 61 can be secured with a simple structure using the rear side cover 51 which is an existing component.

(Examples) Examples will be described below with reference to the accompanying drawings.

FIG. 1 shows a side surface of a rotary working machine including a rear part of an agricultural tractor, a hitch 3 is provided at a rear part of a frame 2 of a tractor 1,
The lift device 4 and the power take-off shaft 5 are provided, and the rotary working machine 6 connects the pair of connecting plates 7 to the hitch 3 and the lift device 4, and the input shaft 8 to the power take-off shaft 5 to connect the tractor 1 to the tractor 1.
It is connected to the rear part. The input shaft 8 is rotated by a gear as shown in FIG.
11, output shaft 15 in the left-right direction via intermediate shaft 12, gears 13 and 14, etc.
The pipes 16 and 17 are fixed to the left and right of the gear case 9 and the connecting plate 7, the chain case 18 is attached to the end of the left pipe 16, and the support plate 19 is attached to the end of the right pipe 17. Be connected.

The power transmission shaft 21 connected to the output shaft 15 is inserted through the left pipe 16 and has a sprocket 22 at its end.
The rotary shaft on the sprocket 24 that works with the chain 23
One end of 25 is connected, and the other end of the rotary shaft 25 is supported by the support plate 19. A large number of rotary pawls 26 ... Are provided on the rotary shaft 25, and a pipe 27 is projected from the connecting plate 9 to the rear as shown in FIG.
An arm 28 that supports left and right tail wheels 29 is connected to 27 so that the length thereof can be adjusted.

The rotary claws 26 ... are main covers shown in FIG. 3 from above.
The main cover 31 is covered with a pair of brackets 36, and the main cover 31 is centrally fixed to the connecting plate 7 with bolts 37 and the like on the pair of brackets 36. Is fixed. The upper portion of the side cover 41 projects above the main cover 31. As shown in FIGS. 4 and 5, a pair of support pieces 32 are provided on the rear end of the main cover 31, and a support pipe 42 is provided on the upper rear end of the side cover 41. Is projected inside.

In addition, bolts are provided on the lower rear end and above the side cover 41.
43 and 44 are projected outward, and a rear side cover 51 is pivotally attached to a lower bolt 43 by a nut 53 so as to be rotatable at a lower front end, and an upper hole 44 of the rear side cover 51 is engaged with the upper bolt 44. Nut 54 is screwed on. The rear side cover 51 can be rotationally adjusted along an arcuate long hole 52 centered on the lower bolt 43, and the upper rear end of the rear side cover 51 covers the upper rear end of the side cover 41 from the outside. It is like this.

An elastic and flexible rear cover 61 is attached to the rear end of the main cover 31, and the rear cover 61 is divided into three pieces as shown in FIG. A holder 71 is fixed to the front end of the rear cover 61 made of a soft rubber plate 66.

The holder 71 is also composed of a central sandwiching plate 72 and left and right sandwiching plates 75 that are divided into three pieces, and the pipes 73, 76 in the left-right direction are provided at the front ends of the sandwiching plates 72, 75 on the lower surface. Two fork-shaped rear cover stoppers 74 and 78 are welded to each other, and connecting pins 77 are welded to the inner ends of the left and right pipes 76. Inside each sandwich plate 72, 75, each soft rubber plate 62,
Insert the front end of 65 and fix it to the bolt 66 and nut 67, and insert the central pipe between the pair of support pieces 32 on the rear end of the main cover 31.
Face 73. The connecting pins 77 at the inner ends of the left and right pipes 76 are inserted into the left and right ends of the central pipe 73 by penetrating the support piece 32, and the pivot pins 48 are attached to the left and right pipes 76 from the support pipe 42 above the rear end of the side cover 41. Insert and secure with the split pin 49. As a result, the rear cover 61 is rotatably attached to the rear end of the main cover 31 at the front end.

At the rear end of the rear cover 61, there is a bar member that extends in the left-right direction.
81 is stuck. The rod member 81 is also composed of a central pipe 82 and left and right pipes 85, which are divided into three pieces. The same sandwich plates 84 and 86 as those described above are welded to the respective pipes 82 and 85, and as shown in FIG. Connecting pins 83 are welded to the left and right ends of 82,
Particularly, as shown in FIG. 7, the outer ends of the left and right pipes 85 are sandwiching plates.
It protrudes from 86. Insert the rear end of each soft rubber plate 62, 65 into each sandwich plate 84, 86 and fix them with bolts 68 and nuts 69, and connect the connecting pin 83 at both ends of the central pipe 82 to the left and right pipes.
Insert in 85. As a result, the rod member 81 is integrated.

Further, as shown in FIG. 4, a hook-shaped engaging portion 45 cut out from above is formed at the upper rear end of the side cover 41.

In the above, FIG. 1 shows the usage state of the rear cover 61. The rear half of the rear cover 61 having the front half placed on the rear cover stoppers 74 and 78 of the holder 71 hangs down, and the rod member 81 at the rear end is grounded. is doing. In this case, the side cover
41 On the outer rear side cover 51, the front end of the long hole 52 is bolt 44
It is fixed by a nut 54 in a state of abutting against, and the rear side cover 51 prevents mud splashing to the side.

Next, when the rear cover 61 is not used, as shown in FIG. 8 to FIG. 10, first, the rear half of the rear cover 61 is bent to the front half and the left and right ends of the rod member 81 at the rear end, that is, the outer end of the pipe 85. Is hooked on the hook-shaped engaging portion 45 at the upper rear end of the side cover 41. Then, loosen the nut 54 and rotate the rear side cover 51 upward along the long hole 52 to bring the outer end surface of the pipe 85 into contact with the inner surface of the front end upper portion of the rear side cover 51, and fasten the nut 54 to the bolt 44. And fix the rear side cover 51.

In this way, when the rear cover 61 is not needed, the rear cover 61 can be folded and the rear end bar member 81 can be hooked on the engaging portion 45 of the side cover 41. The rear cover 61 can be prevented from being damaged by being caught, and the left and right tail wheels 29 can also be moved forward by inserting the arm 28 into the pipe 27 protruding rearward from the connecting plate 9 as shown in FIG. 10, thereby shortening the total length. The amount of uncultivated land can be reduced, and therefore it is rough, and the inner and outer layers are
It is possible to improve workability such as ridge collapse in the reverse direction.

Moreover, since it is foldable, a sufficiently long rear cover 61 can be provided as shown in FIG. 1 to improve the performance in leveling and leveling work.

Further, the rear side cover 51 is rotationally adjusted to fix the bar member 81 hooked to the hook-shaped engaging portion 45 on the upper portion of the side cover 41 at the inner surface of the upper portion of the front end to prevent the bar member 81 from coming off. With the simple structure for preventing the rod member 81 from slipping off using the rear side cover 51, the folded state of the rear cover 61 can be ensured, and the rear side cover 51 can be used not only to prevent mud splashing but also to prevent the rod member 81 from coming off. it can.

A bar-shaped member may be hooked by providing a projecting engagement portion on the upper limit of the side cover.

As described above, according to the present invention, in the rotary working machine, the left and right ends of the rod member, which is attached to the rear end by folding the rear cover when the rear cover is not needed, are provided on the upper portion of the side cover. Since it can be hung on the joint, it can improve workability such as roughing, internal banking, external banking, and ridges in reverse, and it is equipped with a sufficiently long rear cover because it is foldable and leveling work Performance can be improved, and if the rod member is fixed by the rear side cover, the folded state of the rear cover can be secured with a simple structure using the existing rear side cover.

Further, since the rod member of the rear cover is hooked by the substantially U-shaped engaging portion formed on the side cover, the rear cover can be stopped on the side cover side without providing new parts.

[Brief description of drawings]

1 is a side view of a rotary working machine including a rear part of an agricultural tractor, showing a rear cover in use, FIG. 2 is a schematic rear view of the rotary working machine, FIG. 3 is an exploded perspective view of cover components, FIG. And FIG. 5 are side and rear views of the main cover and side cover, FIGS. 6 (a) and 6 (b) are plan and side views of the central part of the bar member, and FIGS. 7 (a) and 7 (b).
Is a plan view and a side view of the left and right parts of the bar member, FIG. 8 is a perspective view of the rear cover in a folded state, and FIG. 9 is an enlarged view of a main part thereof.
FIG. 10 is a side view of the rotary working machine showing a state where the rear cover is not used. In the drawings, 1 is an agricultural tractor, 6 is a rotary working machine, 26 is a rotary claw, 31 is a main cover, 41 is a side cover, 45 is an engaging portion, 51 is a rear side cover, 61 is a rear cover, 71 is a holder, 81 is a bar member.

Continued front page (56) References Open 63-148103 (JP, U) Open 52-101715 (JP, U) Open 57-27202 (JP, Y2) Open 58-53923 (JP) , Y2)

Claims (1)

[Claims] 1. A rotary working machine in which side covers are attached to the left and right ends of a main cover that covers rotary claws from above, and a flexible rear cover having elasticity is attached to the rear end of the main cover at the front end. A bar member extending in the left-right direction is attached to the rear end of the rear cover, the left and right ends of the bar member are protruded from the left and right of the rear cover, and the upper rear end of the side cover is opened to a substantially U shape.
The rear cover is provided with an engaging portion that locks the left and right ends of the rod member in a state in which the rear half of the rear cover is bent over the front half. A pivotally mounted rear side cover is provided to extend rearward, and the rear side cover is pivotally adjusted to fix the rod member by bringing the upper inner surface into contact with the left and right ends of the rod member hooked by the engaging portion. The structure that locks the rear cover of the rotary working machine.