JPH0454722Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field This invention relates to a pawl attachment device used in a rotary tiller.

(B) Technical Background and Problems In general, the claw holders of the tilling shaft of a rotary tilling device are fixed to the outer peripheral surface of the tilling shaft at appropriate intervals so as to be radial when viewed from the side. The claw attachment portions of the claw holder are provided so as to be located on the same rotation radius from the axis of the tilling shaft. By the way, for example, if you want to plow deeply in the central part of the tilling width and gradually shallowly plow from the central part toward both left and right sides, attach a tilling claw with a large rotation radius to the central part of the tilling shaft. Tilling claws were installed in such a way that the turning radius gradually became smaller toward the left and right sides. For this reason, with conventional tillage shafts, it is necessary to prepare tilling claws with different rotation radii, which increases the number of types of tilling claws.
There was a problem that the management of tillage claws became complicated.

(c) Purpose of the invention This invention was devised in view of the above-mentioned problems, and its purpose is to provide a claw attachment device that allows the rotation radius of the tilling claws to vary depending on the same type of tilling claws. Our goal is to provide the following.

(d) Structure of the invention In order to achieve the above object, this invention provides a claw attachment device capable of attaching tilling claws to a plurality of claw attachment portions provided in the axial direction of the tilling shaft. The distances from the center of the tilling shaft of three or more of the pawl attachment parts that are successively arranged adjacent to each other are made to be different from each other.

(E) Embodiment Hereinafter, one embodiment of this invention will be explained in detail using the drawings.

FIG. 1 is a perspective view of a claw attachment device according to an embodiment of this invention, and FIG. 2 is a partially omitted front view of a rotary tillage device using a special tillage shaft according to this invention.

As shown in FIG. 2, a tillage pipe 1 serving as a tillage shaft is detachably connected to a drive shaft (not shown) supported at the lower end of a gear case 7 of a rotary tiller.

A large number of brackets 3, 3... are fixed to the outer peripheral surface of the tillage pipe 1 at appropriate intervals so as to form a radial pattern when viewed from the side.
... has a claw attachment part 5 to which a tilling claw 9 is detachably attached.
has been established. This claw attachment part 5 is provided with through holes 15 that correspond to the pair of through holes 13 provided in the holder part 11 of the tilling claws 9.
The tilling claw 9 is fixed to the bracket 3 by inserting a bolt 17 through the hole 15 of the claw mounting portion 5 and screwing the nut 19.

As shown in FIGS. 1 and 2, the brackets 3 are 3 that are continuously arranged adjacent to each other in length from the axis of the tilling pipe 1 as it goes from one end of the tilling pipe 1 to the other end. The claw attachment portion 5 of the bracket 3 is also formed so that the distance from the axis of the tillage pipe 1 gradually decreases as it goes from one end of the tillage pipe 1 to the other end. It is composed of

FIG. 2 shows a partially omitted front view of a rotary tilling device formed by attaching tilling claws 9 of the same type to the claw attaching device having the above structure, and plowing work is performed using this rotary tilling device. Then, the central part is plowed deeply relative to the tilling width, and the plow is gradually shallowly plowed from the central part toward both left and right sides.

Note that this invention is not limited to the above embodiment. For example, the distances of the claw attachment parts 5 from the tillage pipe 1 can also be made to vary irregularly.

(f) Effects of the device As is clear from the above explanation, according to the configuration of this device, three or more claw attachment portions that are consecutively arranged adjacent to each other in the axial direction of the tilling shaft are separated from the axis of the tilling shaft. Since the distances are made different from each other, by attaching the tilling claws of the same length, the rotation radius of the plurality of tilling claws can be made different, and it is possible to perform tillage work in various soil mound forms. Moreover, since the claws of the same length can be used, the work of attaching the tiller claws and the management of the tiller claws becomes easier.

[Brief explanation of the drawing]

The drawings show one embodiment of this invention, with FIG. 1 being a perspective view and FIG. 2 being a partially omitted front view of the rotary tiller. Explanation of the symbols representing the main parts of the drawing, 1...
Cultivating pipe (cultivating shaft), 5...claw attachment part.

Claims (1)

[Scope of utility model registration request] In a claw attachment device capable of attaching tilling claws to a plurality of claw attachment portions provided in the axial direction of a tilling shaft, the tilling shaft has three or more claw attachment portions that are consecutively arranged adjacent to each other in the axial direction of the tilling shaft. A claw attachment device characterized by having different distances from the axis.