JPS6031445Y2 - Wrapped straw removal device in tillage equipment - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a wrapped grass straw removal device in a tillage device in which inclined tillage claw shafts are arranged on both sides of a transmission case.

There is a risk that grass straw wrapped between the inclined tilling claw shaft and the horizontal tilling claw shaft that extends therefrom may enter the inside of the inclined tilling claw shaft and damage the seal. needs to be removed.

This invention is intended to facilitate this removal work and takes the following technical measures.

That is, in a tilling device capable of tilling under the transmission case 1, which has inclined tilling claw shafts 2, 2 on both sides of the transmission case 1 that rotate around the inclined axis, the inclined tilling claw shafts 2.2 extend to the left and right. Horizontal tilling claw shafts 3, 3 that rotate together with the shafts 2, 2 have an appropriate width in the axial direction on the inner end side shaft periphery, and these shafts 3, 3
Projections 4, 4, which protrude radially in a radial direction perpendicular to
... is provided, and on the outer end surface of the inclined tilling claw shafts 2, 2, grass straw locking pieces are provided to engage the grass straw wrapped around the projecting ridges 4, 4... and prevent it from moving inward. This is a configuration of a wrapped grass straw removal device in a tillage device, which is formed by fixing the grass straw.

An embodiment of this invention will be described based on the drawings.

Reference numeral 1 denotes a transmission case, which has sprockets that are internally moved upwardly and downwardly to each other in a chest-like manner, and is configured to rotationally drive a drive shaft 6 extending left and right at the bottom of the transmission case 1.

7 is a cylindrical member fixed to the lower side surface of the transmission case 1;
The outer periphery is set in a cylindrical shape centered on an inclined axis A that is inclined at a predetermined angle with respect to the horizontal axis opening.

The cylindrical member 7 has a bearing 8. A tilted tilling claw shaft 2 is rotatably fitted onto the outside via a shaft, and is configured to transmit power via a rotor 9 that is spline-fitted to the drive shaft 6.

Note that 10, 10, . . . are residual tillage processing claws that can till the soil under the transmission case 1.

The horizontal tilling claw shafts 3, 3 are provided to extend left and right from the inclined tilling claw shafts 2, 2, and are spline-fitted to the distal end side of the drive shaft 6.

11.11... is a tilling claw.

Between the inner end surface of the horizontal tilling claw shaft 3 and the outer end surface of the rotor 9, there is provided an annular body 12 having protrusions 4, 4, .

This ring body 12 is spline-fitted to the drive shaft 6 and configured to rotate together with the horizontal tilling claw shaft 3 and the inclined tilling claw shaft 2.

Reference numeral 5 designates a wrapped grass straw locking piece that is fitted and fixed to the outer end of the peripheral surface of the inclined tilling claw shaft 2, and in the illustrated example, it is a meshing transmission part between the inclined tilling claw shaft 2 and the rotor 9, or a bearing 8. It also serves as a seal cover to protect the elastic seal 13 that seals the internal space in which the deceased, etc. is introspected.

The inner peripheral edge of this seal cover (locking piece) 5 has the above-mentioned protrusion 4.
Notches 14, 14, . It is arranged so as to penetrate from the inside and outside in three directions of the axis.

The remaining notch on the inner peripheral edge of the seal cover 5 approaches the shaft peripheral surface of the horizontal tilling claw shaft 3 (ring body 12), and the protrusions 4, 4...
The edge of the seal cover 5 is located close to the front and rear parts of the base, that is, the corner parts formed by the respective protrusions 4, 4, and the circumferential surface of the horizontal tilling claw shaft 3 (ring body 12), and the outer and elastic seal 1
3 and the outside surface.

The action of the upper side will be explained.

When the drive shaft 6 rotates, the inclined tilling claw shaft 2 and the horizontal tilling claw shaft 3 rotate together, and the tilling claws 11, 11..., residual tillage processing claws 10, 10... are driven into the soil. Cultivate this.

The remaining tillage processing claws 10, 10, . . . are inclined tillage claw shafts 2 that rotate around an inclined axis tilted at a predetermined angle with respect to the horizontal shaft center opening.
Since it is attached to the transmission case 1, it moves away from the side surface of the transmission case 1, and conversely, when it is in the soil, it deviates inward and can plow under the transmission case 1.

During tillage, grass straw or the like is caught on the rotating claw shafts 2 or 3, rotated, and wrapped around the claw shafts 2 or 3.

In particular, if a large amount of straw is tightly wrapped around the inner end of the horizontal tilling claw shaft 3, that is, the protrusions 4, 4..., there is a risk of pressing the seal cover 5, deforming it, and damaging it. , protrusion 4
, 4... are arranged on the circumferential portion of the annular body 12 around the horizontal axis center opening, and since the seal cover 5 is provided on a surface substantially perpendicular to the inclined axis A, the notch 14 of the seal cover 5, 14...
is located near the inner end of the protrusion 4.4 on the lower side of the shaft opening, and is deviated in the direction of the arrow on the upper side of the shaft opening, and therefore,
The remaining notch portion of the seal cover 5 pushes out the grass straw that wraps around the protrusions 4, 4... part with each rotation of the claw shaft in the direction of the arrow on the upper side of the shaft center and away from the protrusions 4, 4... part. There is no possibility that the seal cover 5 will get stuck on the side surface of the seal cover 5 and put pressure on it when trying to remove it.

This invention has the following technical effects since it uses the above-mentioned bark.

That is, the protrusions are arranged on the circumferential surface of the horizontal tilling claw shaft, and the locking piece on the outer end surface of the inclined tilling claw shaft removes the grass straw wrapped around the protrusion every rotation on the upper side of the axis. In this case, it is possible to eliminate the stagnation of the extruded ridges at a certain point and eliminate the lashing condition at the ridges, making it easier to remove the ridges.

Furthermore, since these protrusions have a predetermined width in the axial direction and are provided radially around the circumference, they can easily cut the grass straw that is about to be wrapped around it while the shaft is rotating. Therefore, it is possible to completely prevent grass straw from being wrapped around the shaft or damage to the seal cover caused by this.

In the embodiment, the seal cover is a straw locking piece, but a sheet metal member, a rod-shaped body, etc. separate from the seal cover may be used.

Further, if extrusion pieces are set at the corners of the base of the protrusions 4, 4, and the circumferential surface of the horizontal tilling shaft 2 as in this embodiment, the action of extruding the wrapped grass straw will be even better.

[Brief explanation of drawings]

The figures show one embodiment of this invention, with FIG. 1 being a partially cutaway front view, and FIG. 2 being a cutaway view taken along the line AA in FIG. 1. In the figure, 1 is a transmission case, 2 is a tilted tilling claw shaft, 3 is a horizontal tilling claw shaft, 4, 4... are protrusions, 5 is a straw locking piece, A is a horizontal shaft center, and the mouth is a tilted shaft Show the core.

Claims (1)

[Scope of utility model registration request] In a tilling device capable of cultivating under the transmission case, which has inclined tilling claw shafts that rotate around the inclined axis on both sides of the transmission case, the horizontal tilling claw shaft that extends to the left and right of the inclined tilling claw shaft and rotates together with the shaft. A protrusion having an appropriate width in the axial direction and protruding radially in a radial direction orthogonal to the axis is provided on the circumference of the end shaft, and the protrusion is provided on the outer end surface of the inclined tilling claw shaft. A device for removing wrapped grass straw in a tillage device, comprising a straw locking piece that engages grass straw wrapped around a portion and prevents the straw from moving inwardly.