JPH0539205U - Cover device for rotary tiller - Google Patents

Abstract

(57) [Summary] [Purpose] The rake device is attached to and detached from the tillage cover device by one-touch operation. [Structure] An engaging projection 19 is provided upright on a board 17 to which a rake rod 16 is fixed in a row, and the engaging projection 19 is inserted into a hole 20 formed in the cover 8 to fix the board 17 to the cover 8. A clamp lever 22 which is superposed on the inner surface and is rotatable around a fulcrum 21 on the outer surface of the cover 8 is engaged with the engaging projection 19 in a disengageable manner, and the fulcrum 21 of the clamp lever 22 is centered. A spring rod 23 that rotates to bring the substrate 17 into close contact with the inner surface of the cover 8
Is provided on the clamp lever 22.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cover device for a rotary cultivator.

[0002]

[Prior Art]

 A rake rod is detachably attached to the lower part of the rear end of the cover that covers the rotary tillage, facing the rotary tillage, and when leveling in the field, remove the rake and remove the scraping work in the paddy field. In some cases, there is a cover device that attaches a rake rod.

[0003]

[Problems to be solved by the device]

 Conventional rake rods are attached and detached by fastening the rake rods to the cover with bolts and nuts, so the attachment and detachment work is very troublesome, and the rotary work is intended for soil and mud. However, it was difficult to fasten the bolts and nuts due to rust.

Therefore, an object of the present invention is to enable attachment / detachment of a rake rod by a so-called one-touch operation using a spring rod and a clamp lever.

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention is a cover device in which a rake rod 16 is detachably attached to the lower part of the rear end of the cover device 10 for covering the rotary tillage part 5 so as to face the rotary tiller part 5. The following technical measures are taken. That is, according to the present invention, an engaging protrusion 19 is provided upright on a substrate 17 having rake rods 16 fixed in a row, and the engaging protrusion 19 is inserted into a hole 20 formed in the cover 8 to attach the substrate 17 thereto. The clamp lever 22 is placed on the inner surface of the cover 8 and is rotatable on the outer surface of the cover 8 about a fulcrum 21. The clamp lever 22 is provided with a spring rod 23 for bringing the substrate 17 into close contact with the inner surface of the cover 8 by pivoting about.

[0006]

[Action]

 To mount the rake rod 16 on the lower rear end of the cover 8 for scraping work, insert the engaging projection 19 of the base plate 17 on which the rake rod 16 is installed in a row into the hole 20 of the cover 8. The clamp lever 22 is rotated around its fulcrum 21 in the direction of arrow A shown in FIG. 1 with the spring rod 23 hooked on the engaging projection 19.

As a result, the board 17 is brought into close contact with the inner surface of the cover 8, while the clamp lever 22 is prevented from being reversed by the spring rod 23. When removing the rake rod 16 for leveling work or the like, if the clamp lever 22 is rotated in the direction of arrow B shown in FIG. 1, the spring rod 23 is disengaged from the engaging projection 19. The substrate 17 having the rake rod 16 can be removed.

[0008]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. In FIG. 5 showing the whole, a rotary cultivator 1 is mounted on a tractor (not shown) so as to be movable up and down by a three-point link 2. The rotary cultivator 1 is provided with a rotary cultivating part 5 including a cultivating claw 4 on a claw shaft 3 which rotates about a horizontal horizontal axis, and the cultivating part 5 is fixed to a main cover 6 and a rear end of the main cover 6. It is covered by a cover device 10 comprising a rear cover 8 and side covers 9 which are pivotally mounted via hinges 7.

The tiller 5 is driven by a side drive method and a center drive method, and a lower part of the rear end of the rear cover 8 is a leveling section 11, and an elastic holding means 14 including a rod 12 and a spring 13 is provided. A rake device 15 is detachably provided near the leveling portion 11 by being biased toward the ground by. 1 and 2, the rake device 15 has a rake rod 16 made of a U-shaped elastic material in plan view and fixed to a substrate 17 in a row at an equal pitch. The substrate 17 has a gutter-shaped cross section and a width direction. It is a long strip, and the U-shaped base 16A of the rake rod 16 is overlapped with the groove edge 17A of the board 17 and the rod 16B is inserted into the through hole 17B of the board 17 and spot welded at three points 18 etc. It becomes fixed by.

Engaging protrusions 19 are provided upright on the board 17 at intervals in the tilling width direction, while holes 20 through which the engaging protrusions 19 are inserted are formed in the rear cover 8. .. Therefore, the engaging projection 19 is inserted into the hole 20 in a state where the front and rear flange portions of the substrate 17 having the rake rod 16 are superposed on the inner surface of the cover 8. A clamp lever 22 rotatable about a fulcrum 21 is provided on the outer surface of the cover 8 facing the engaging projection 19, and the clamp lever 22 has a coil portion 23A in plan view. A spring rod 23 having a shape is provided.

Therefore, with the U-shaped base portion 23B of the spring rod 23 engaged with the engagement groove 19A of the engagement projection 19 protruding from the hole 20, the clamp lever 22 is rotated around the fulcrum 21 as shown by the arrow in FIG. When it is rotated in the direction of A, the front and rear flange portions of the board 17 are brought into close contact with the inner surface of the cover 8, while the clamp lever 22 is prevented from reversing due to the spring action of the coil portion 23A and the like. Therefore, unless the clamp lever 22 is operated in the direction of the arrow B, the board 17 is in close contact with the cover 8, the board 17 acts as a protector for the U-shaped portion of the rake rod 16 and projects rearward from the board 17. The rod 16B is used to embed grass etc.

In the illustrated example, as shown in FIG. 3, on both sides (only one side is shown in the figure) of the cover 8, the extension cover 26 faces the ground by a folding connecting fitting 24 and a spring 25. It is provided so that it can stand upright from the ground and is foldable around the fulcrum 24A.The extension rake device 15A consisting of the board 17 etc. corresponding to the length of the extension cover 26 is detachably attached to the inner surface of the extension cover 26. It is prepared.

The extension rake device 15A has the same configuration as the rake device 15 described above, the clamp lever 22 is provided only at one location, and one of the two engaging protrusions 19 has an extension cover 26. It is merely inserted through the hole 20 formed in the above, and serves as a rotation stop for the substrate 17. Further, in the cover device 10 of the illustrated example, as shown in FIG. 4, a cross-section hat-shaped rail member 27 is provided on the inner surface of the main cover 6 with a space in the tilling width direction, and the rail longitudinal direction is shown in FIG. As described above, the nuts 28 fixed in a row in the front-rear direction C are screwed onto the nuts 28 fixed to the rail member 27 with the bolts 29 having the rounded heads 29A to form elastically deformable canvas such as rubber or resin. The embedded mat 30 is mounted in a developed state, and thereby the attachment growth of tilling soil or the like is prevented by elastic deformation of the mat 30 or the like.

The bolt 29 is screwed into the nut 28 via the washer body 31 with respect to the mat 30, and the washer body 31 covers the periphery of the round plate head 29A, and the contact portion 31C with the mat 30 is The mat 30 is prevented from being cut by being bent as a peripheral rib having an angle of 15 ° to 60 °. The plate round head 29A is in contact with the washer body 31 as a so-called chrysanthemum, and is stopped.

Further, on the inner surface of the rear cover 8, strips 32 are arranged in a row in place of the above-mentioned rail members with a space in the plowing width direction. A portion 32A is formed, and the mat portion 30 has a space between it and the cover via the nut 28, the bolt 29, etc. and extends over the substantially gold surface of the inner surface of the cover in the same manner as described above in the bag portion 32A. It is installed. Therefore, the mat 30 has a gap by the rail member 27 and the like over the front edge and the rear edge of the cover device 15, and since the rail member 27 and the like are in the front-rear direction, mud or the like may be caused inside the mat 30. Even if it gets in, it is easy to wash it with water.

[0016]

[Effect of the device]

 The present invention is as described above, the engaging protrusion 19 is provided upright on the base plate 17 on which the rake rods 16 are fixed in a row, and the engaging protrusion 19 is inserted into the hole 20 formed in the cover 8 to The board 17 is superposed on the inner surface of the cover 8, and the outer surface of the cover 8 is provided with a clamp lever 22 which is rotatable around a fulcrum 21. Since the clamp lever 22 is provided with the spring rod 23 that brings the substrate 17 into close contact with the inner surface of the cover 8 by rotating around the fulcrum 21, the substrate 17 having the rake rod 16 can be attached and detached by one-touch operation of the clamp lever 22. Can be done easily, and even leveling work can be changed to a scraping work easily and quickly.

[Brief description of drawings]

FIG. 1 is a side sectional view of an embodiment of the present invention.

FIG. 2 is a plan view of the same with a part thereof broken away.

FIG. 3 is a plan view of an extension cover portion.

FIG. 4 is a plan view and a sectional view of a main cover portion.

FIG. 5 is an overall side view of a rotary cultivator.

[Explanation of symbols]

 5 Rotary Tiller 8 Cover 10 Cover Device 16 Rake Rod 17 Substrate 19 Engagement Projection 20 Hole 21 Support Point 22 Clamp Lever 23 Spring Rod

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Creator Tatsuya Maeyama 64 Ishizukita-machi, Sakai City, Osaka Prefecture Kubota Sakai Factory Co., Ltd.

Claims (1)

[Scope of utility model registration request] 1. A cover device (1) for covering a rotary tiller (5).
At the bottom of the rear end of (0) facing the rotary tillage part (5),
In the cover device in which the (16) is detachably attached, the engaging protrusions (19)
And the engaging projection (19) is inserted into the hole (20) formed in the cover (8) so that the substrate (17) is superposed on the inner surface of the cover (8). ) Is provided with a clamp lever (22) which is rotatable around a fulcrum (21), and is engaged with the engaging projection (19) so as to be disengageable, and the fulcrum (21) of the clamp lever (22) is A cover device for a rotary cultivator, characterized in that a clamp lever (22) is provided with a spring rod (23) for bringing the substrate (17) into close contact with the inner surface of the cover (8) by pivoting about the center.