JPH0446487Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field This invention relates to a cross-rotary device of a tillage device for processing the residual tillage remaining below the chain case.

(b) Conventional technology In addition to a rotary shaft on which a normal rotary claw is attached, a conventional cross rotary device has a cross rotary shaft tilted at a certain angle and mounted on a housing etc. that is coaxial with the rotary shaft and is tilted. It was supported by bearings (for example, in 1983
- No. 10604).

(c) Problems to be solved by the invention Therefore, even if an attempt was made to change this to a normal rotary device other than a cross-rotary mechanism, it was impossible at the end user level. In addition, when doing this, it is necessary to install a sealing material called a flexible seal between the cross rotary shaft and the rotary shaft, but this has disadvantages such as the repetitive load applied to this material being too severe and the lifespan being short. there were. Furthermore, since the volume of the housing section is also large, there is a problem in that this section requires a large amount of horsepower to push the soil.

(d) Means for solving the problem Therefore, this invention provides a removable dust cover that covers the outer side of the housing boss formed on the side of the chain case on the rotary shaft protruding from the housing boss. In addition to being spline-fitted so that the housing boss can be tilted freely, the housing boss is slidably connected to a cylindrical inclined guide part formed at the outer peripheral end of the housing boss with the outer side of the axis tilted downward, and the shape of the inclined guide part is adjusted to the shape of the inclined guide part. The above-mentioned problems have been solved by rotating the dust cover along the same direction and by attaching cross rotary claws to the dust cover.

(E) Effect As a result, since the dust cover is in sliding contact with the inclined guide portion formed at the outer peripheral end of the housing boss, when it is rotated by a rotary shaft or the like, it follows the shape of the dust cover, i.e. , the rotating surface is rotated in an inclined state with the rotating surface tilted downward from the vertical direction toward the chain case side. Therefore, if a cross rotary claw is attached to this, a cross rotary mechanism can be created.

(F) Embodiment Hereinafter, an embodiment of this invention will be described with reference to the drawings, and FIGS. 1 and 2 are longitudinal cross-sectional views of a cross rotary mechanism according to this invention.

As is well known, the tilling device has a rotary shaft 2 protruding from both sides of a chain case 1, and a housing boss 3 is formed on the protruding side wall portions, and the rotary shaft 2 is mounted in the housing boss 3. It is supported by a bearing 4 and a dust seal 5. Note that the center of the rotary shaft 2 (bearing 4
A driving sprocket 6 is fixed to the drive sprocket 6 (between), and a claw mounting cylinder 8 for mounting a rotary claw 7 is firmly fitted to the rotary shaft 2 outside the chain case 1 (9 is a drawbar for fixation). .

By the way, in this invention, the dust cover 10 that covers the dust seal 5 fitted to the outermost part of the housing boss 3 is firmly fitted at the outer position of the housing boss 3 so as to be tiltable with respect to the rotary shaft 2. be. Note that with this structure, for example,
A spline piece 10b that fits the spline 2a provided on the rotary shaft 2 with its boss 10a on the outer periphery with a considerable amount of play, and that is always spline-fitted to a part of the inner periphery even if the boss 10a is tilted. It is possible to think of something that would form a

On the other hand, the peripheral end of the dust cover 10 is bent inward to form a rim portion 10c, and the inclined guide portion 3 forms this rim portion 10c at the outer peripheral end of the housing boss 3.
It comes into sliding contact with a. And the inclined guide part 3a
As the name suggests, by making the rotary shaft 2 into a cylindrical shape with the outer side of the axis tilted downward, the dust cover 10 can move along this inclined guide part 3.
According to the shape of a, the rotating surface rotates on an inclined surface that extends downward from the vertical direction to below the chain case 1.

Therefore, the rim portion 1 of this dust cover 10
If a claw holder 11 is provided on the outer periphery of 0c and a cross rotary claw 12 is attached to this, a so-called cross rotary mechanism can be obtained.

Note that the above-mentioned claw mounting tube 8 is fitted to the outside of this dust cover 10.

Next, these dust covers 10 can be easily removed, and an ordinary claw mounting cylinder 8 can be attached in their place to provide a normal rotary specification.

That is, all that is required is to loosen the drawbar 9, pull out the claw mounting cylinder 8, remove the dust cover 10, and fit the spacer 13 (a rotary claw 7 or the like may be mounted thereon) in its place.

(g) Effects of the invention Since this invention is as described above,
The following effects can be expected.

That is, by providing the dust cover 10 as described above and attaching the cross rotary claws 12 thereto, a cross rotary mechanism with a simple structure and a small space can be realized. Of course, in this case, the dust cover 10 serves to protect the dust seal 5 and the like.

Since the dust cover 10 can be easily removed, the user can easily change the normal rotary specification and the cross rotary specification by inserting the spacer 13 and the like afterwards.

[Brief explanation of drawings]

FIGS. 1 and 2 are longitudinal sectional views of the cross rotary mechanism according to this invention. Symbols: 1...Chain case, 2...Rotary shaft, 3...Housing boss, 3a...Inclination guide section, 10...Dust cover, 12...Cross rotary claw.

Claims (1)

[Scope of utility model registration request] A removable dust cover 10 covers the outer side of the housing boss 3 formed on the side of the chain case 1.
is spline-fitted to the rotary shaft 2 protruding from the housing boss 3 so as to be freely tiltable due to play, and a cylindrical slope formed at the outer peripheral end of the housing boss 3 with the outside of the axis tilted downward. A cross-rotary mechanism for a tillage device, characterized in that the dust cover 10 is fitted with a cross-rotary pawl 12, which is brought into sliding contact with a guide part 3a and rotated along the shape of the inclined guide part 3a.