JPH065690Y2 - Forward / reverse rotary cultivator rake member holding device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a rake member holding device for a forward / reverse rotary cultivator.

(Prior Art) A forward / reverse rotary cultivator having a rake member swingably around the left and right lateral axes between a reversible tiller and a rear cover covering the rear of the tiller. In particular, the rake member can be rockably positioned at a position separated from the tillage part. As a result, during reverse cultivating, the rake member placed close to the cultivating part produces a crushing soil effect, and during normal cultivating, the rake member is separated from the cultivating part to prevent grass entanglement and soil adhesion to the rake member. ing.

Conventionally, there is a device disclosed in Japanese Patent Application Laid-Open No. 61-88801 that performs the swing positioning of the rake member. This is provided with a hooking tool that swings in conjunction with the rocking of the rake member, and swings the hooking tool to lock it on the machine frame of the cultivator to perform rocking positioning of the rake member. Is.

(Problems to be Solved by the Invention) For rocking and positioning the rake member, the structure in which the latch is provided so as to interlock with the rake member as in the related art has a complicated structure and increases the manufacturing cost.

Then, this invention aims at providing the apparatus which can rock | fluctuately position a rake member with a simple structure.

(Means for Solving Problems) The feature of the technical means taken by the present invention to solve the problems of the prior art is that the tiller section 8 capable of forward and reverse rotation is used.
Between the rear cover 12 that covers the rear of the tiller 8 and
In the forward / reverse rotary cultivator 1 in which the upper end of the rake member 14 is swingably provided around the left and right horizontal shafts 19, the rake member 14 is swingably positionable at a position separated from the tiller 8. In this case, a holding body 22 is attached to the rear cover 12 at an eccentric position so as to be rotatable around the front-rear axis, and the holding body 22 engages with a lower end portion of the rake member 14 separated from the tiller 8. The point is that the rake member 14 can be rotationally positioned between an upper rotation position that restricts swinging of the rake member 14 in the direction of the tilling portion 8 and a lower rotation position that releases the engagement.

(Operation) By engaging with the holding body 22, the rake member 14 is pivotally positioned at a position separated from the tilling part 8, and by releasing the engagement with the holding body 22, the rake member 14 is moved in the direction of the tilling part 8. It can be swung to a position close to the tilling part 8.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

5 and 6 show a forward / reverse rotary cultivator 1 mounted on a tractor, in which a support arm 3 extends from the power receiving gear box 2 to the left and right.
Is connected to the chain case 4 at one end thereof and the side frame 5 is connected to the other end thereof. A claw shaft 6 is supported between the lower ends of the chain case 4 and the side frame 5 in a bridge shape. From the PTO shaft of the tractor to the gear shaft 2
Is transmitted from the transmission shaft in the support arm 3 via the winding transmission mechanism in the chain case 4 to be rotationally driven, and the pawl shaft 6 is driven by the forward / reverse switching mechanism in the gear box 2. It is possible to rotate forward and backward through. Further, a tilling claw 7 is attached to the claw shaft 6 so that the posture thereof can be changed according to forward and reverse tilling, thereby forming a tilling section 8.

The cultivating part 8 is covered by a main cover 9 on the upper side, a front cover 10 on the front side, side covers 11 on the left and right sides, and a rear cover 12 on the rear side. As shown in the first illustration, the rear cover 12 has left and right pivots 13 attached to its upper end, and both ends of the pivot 13 are pivotally supported by the side covers 11 so as to be swingable about the pivot 13.
Further, the rear cover 12 is curved so that its upper end side is bulging backward and its lower end side is curved bulging forward and is grounded.

Then, a rake member 14 is provided between the tilling part 8 and the rear cover 12.
Is provided. The rake member 14 includes a plurality of U-shaped rods 15 arranged in the left-right direction, and a mounting plate 16 to which the U-shaped rods 15 are attached. Each U-shaped rod 15 has an open side on the lower side and an upper end attached to a mounting plate 16 via a holding plate 17 and bolts and nuts 18. Left and right horizontal shafts 19 are attached to the upper ends of the mounting plates 16, and the left and right horizontal shafts 19 are pivotally supported by the left and right side covers 11 so that the rake member 14 can swing about the left and right horizontal shafts 19. .

Further, a soil protection plate 21 is attached to the lower surface of the rear end of the main cover 9 via a spacer 20. This earth protection plate 21 is a rear cover
It is intended to prevent the cultivated soil from scattering to the rocking shafts of the rake member 12 and the rake member 14. The rear edge 21a of the soil-proof plate 21 serves as a stopper that restricts the rake member 14 from oscillating closer to the cultivating portion 8 by its own weight by being brought into contact with the mounting plate 16 of the rake member 14. Function.

Then, a pair of left and right holders 22 is attached to the rear cover 12 at a position where the bending direction changes. Holder 22
As shown in FIGS. 2 to 4, the disk-shaped member has a spindle 23 projecting from a portion eccentric from the center thereof. The support shaft 23 has a large-diameter portion 24 at the base end, and a male screw 25 is formed on the front end side. Then, the support shaft 23 is rotatably inserted from the front into the through hole 26 of the rear cover 12, and the nut 27 is screwed into the insertion end.
Since the rear cover 12 is sandwiched between the large-diameter portion 24 and the large-diameter portion 24, the rotation of the holding body 22 is restricted. A lever 28 for rotating the nut 27 is attached to the nut 27.

When performing reverse cultivating in the rotary cultivator 1,
As shown in FIGS. 1, 5 and 6, when the rake member 14 is brought close to the cultivating part 8 to cause a crushed soil effect, and normal cultivating is performed, the rake is performed as shown in FIGS. 2 to 4. Element
14 is rocked and positioned at a position separated from the tilling part 8 and held by a holding body 22 to prevent adhesion of grass, soil and the like. For this holding, the screwing of the nut 27 to the support shaft 23 is loosened, and the holding body 22 is rotated around the support shaft 23 eccentric from the center of the support body 23 so as to be positioned in front of the lower end of the rake member 14, and then the nut 27 is turned again. Is performed by restricting the rotation of the holder 22 by tightening. As a result, the holder 22 is engaged with the rake member 14,
The rake member 14 is restricted from swinging in the direction of the tilling part 8 and is swingably positioned at a position separated from the tilling part 8. On this occasion,
In this embodiment, the rake member 14 is sandwiched between the holding body 22 and the rear cover 12 and does not swing, but the holding body 22 and the rear cover 12 do not move.
It may be a little rocking with respect to 12, and in essence, rocking in the direction of the tiller 8 may be restricted. Then, when performing reverse tillage again, the nut 27 may be loosened and the holder 22 may be rotated around the support shaft to release the engagement between the holder 22 and the rake member 14.

(Advantage of the Invention) According to the present invention, the rake member mounted on the rear cover is rotationally positioned and engaged with the rake member, whereby the rake member can be rocked and positioned at a position separated from the tillage part. The structure is simpler and the manufacturing cost can be reduced.

Moreover, the holding body 22 is attached to the rear cover 12 at the eccentric position so as to be rotatable around the front-rear axis, and the holding body 22 engages with the lower end portion of the rake member 14 separated from the tilling part 8 to form the rake member. The holder 22 is simply rotated around the front-rear axis because it can be rotationally positioned between an upper rotation position that restricts swinging of the 14 in the direction of the tilling part 8 and a lower rotation position that releases the engagement. The rake member 14 can be easily set to a position separated from the tilling part 8 and a position close to the tilling part 8 only by operating the rake member 14, and therefore, the positioning operation of the rake member 14 is extremely easy. Also, since the holding body 22 is only rotated, the holding body 22 is always attached to the rear cover 12, and there is no need to attach or detach the holding body 22 to or from the rear cover 12. There is no fear of losing the holder 22, and The effect is remarkable.

[Brief description of drawings]

The drawings relate to the embodiment of the present invention. Fig. 1 is a side sectional view of a main part of a rotary tiller during reverse cultivating, Fig. 2 is a side sectional view of the main part during the same forward cultivating, and Fig. 3 is The same important section expanded side sectional view, 4th
The figure is an enlarged plan view of the same main part, FIG. 5 is an overall side view of the rotary cultivator, and FIG. 6 is an overall plan view of the same part broken. 1 ... Rotary tiller, 8 ... Tiller, 12 ... Rear cover, 14 ... Rake member, 19 ... Left and right horizontal axis, 22 ... Holder.

Continuation of the front page (56) Bibliography Sho 60-41108 (JP, U) Ribaku 61-95204 (JP, U) Ribaku 62-196606 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. A tilling part (8) capable of rotating in the normal and reverse directions, and this tilling part (8)
Between the rear cover (12) covering the rear of the rake member (14)
Is a forward-reverse rotary cultivator (1) whose upper end is swingably provided around the left and right horizontal axes (19), and includes a rake member (14).
Of the rear cover (12), the holder (22) is attached to the rear cover (12) at an eccentric position so that it can be rotated about the front-rear axis. Rake member whose body (22) is separated from the tilling part (8)
Rotational positioning is performed between an upper rotation position that engages with the lower end of (14) to restrict swinging of the rake member (14) in the direction of the tilling part (8) and a lower rotation position that releases the engagement. A rake member holding device for a forward / reverse rotary cultivator, which is characterized as being freely movable.