JPS5932242Y2 - Rotary cover for rotary tiller - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a rotary cover for a rotary tiller.

More specifically, the present invention relates to an improvement of the rotary cover of a center-driven deep rotary tiller.

In a center-driven deep-till rotary tiller, the drive case in the center digs deeply together with the soil clods carried by the tilling claws and deposited in the front, and the resistance causes the soil clods to bulge up in the front. The front end of the rotary cover scrapes off the mounded up clod of soil, causing it to accumulate on the upper surface of the rotary cover, making it impossible to continue the work.

In addition, in the front of the drive case, the tilling claws do not intersect, and the drive case itself has to push the soil open three times on the left and right, but if the field is overgrown with grass, the roots may be stretched. This pushing-opening action may not be sufficient and the soil may accumulate in the front, impeding smooth tillage work.

The purpose of the present invention is to solve the problems in the conventional technology as described above, and to prevent the tip of the rotary cover from scraping and accumulating soil clods on the top surface of the rotary cover, even though it is a center-driven rotary tiller, and to prevent soil clods from accumulating on the top surface of the rotary cover. To provide a rotary cover for a rotary tiller, which enables smooth tilling work even in fields where there is tension.

The rotary cover of the rotary tiller of the present invention, which achieves the above object, has a plate at the front of the rotary cover of the center-driven rotary tiller, which extends downward in front of the rotary cover and slopes diagonally upward in the middle. The plate is characterized in that it is provided with a cutting blade located in front of the drive case and extending downward at the center of the lower surface of the plate.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to embodiments shown in the drawings.

FIG. 1 is a front view of the rotary part of a rotary tiller equipped with the rotary cover of the present invention, and FIG. 2 is a side view of the same.

FIG. 3 is a perspective view of the auxiliary cover attached to the rotary cover.

In the figure, a rotary shaft 2 extends from the lower end of the drive case 1 on both sides, and a plurality of tilling claws 3 are fixed radially around the rotary shaft 2.

A rotary cover 4 is fixed to the upper part of the drive case 1 via a support bracket 5 along the outer peripheral edge of the tilling claws 3.

Drive case 1 of rotary cover 4 provided in this way
An auxiliary cover 6 is fixed to the front portion of the cover 6 with bolts 7t.

The auxiliary cover 6 is attached to the rotary cover 4 as shown in FIG.
A curved part 8a formed along the curved surface of the curved part 8a, and an inclined part 8 that bends in a V-shape from the middle of the tip and goes diagonally forward.
A cutting blade 9 is welded to the plate 8 and extends downward substantially perpendicularly from the center of the lower surface of the plate 8.

The cutting blade 9 has a blade 9a formed along its front edge.

10 is a bolt hole, and 11 is a support fitting.

As shown in FIGS. 1 and 2, the auxiliary cover 6 closes the notch of the rotary cover 4 in front of the drive case 1 with the curved portion 8a of the plate 8, and the front end of the curved portion 8a is the front end of the rotary cover 4. It is fixed by a bolt I through a bolt hole 10 so as to extend further forward and downward from A.

Also, an inclined portion 8b is bent in a V shape from the front end of the curved portion 8a.
forms a guiding surface that guides the soil mass in front downward.

Furthermore, the auxiliary cover 6 is supported on the drive case 1 by a support metal fitting 11 welded to the lower rear end of the cutting blade 9, and the cutting blade 9 is erected almost vertically in front of the drive case 1. It looks like this.

By being in contact with the drive case 1, the support fitting 11 serves to prevent the plate 8 from being deformed in the front-rear direction and the cutting blade 9 from being deformed in the left-right direction. It also serves as a reinforcing plate.

When the rotary tiller equipped with the rotary cover described above is operated in the direction of the arrow in the field,
The soil clods carried around by the tilling claws 3 are removed by the auxiliary cover 6.
Since the curved portion 8a of the plate 8 extends further forward and downward from the front end A of the rotary cover 4,
It does not protrude forward from the rotary cover 4, and most of it falls within the rotation trajectory of the tilling claws, so that it hardly accumulates in the front.

Moreover, since an upwardly inclined slope 8b is formed at the front end of the curved part 8a, even when the field is tilled deeper than usual or when the center of the field is slightly raised, the slope 8b can be used to guide the slope. The action prevents the tip of the cover from scraping soil and depositing it on the top surface of the cover.

Furthermore, the cutting blade 9 located at the front of the drive case 1 cuts the grass roots even in the field and divides them into left and right parts, so that there is no possibility that they will accumulate in front of the drive case 1 and interfere with smooth tilling work. do not have.

As mentioned above, the rotary cover of the rotary tiller of the present invention has a plate on the front part of the rotary cover of the center drive type rotary tiller that extends downward in front of the rotary cover and slopes diagonally upward in the middle. At the same time, a cutting blade is provided in the center of the lower surface of the plate that is located in front of the drive case and extends downward, so that the tip of the rotary cover scrapes and deposits clods of soil on the upper surface of the rotary cover. Furthermore, even in the case of a field with grass roots, the cutting blade at the front of the drive case cuts the grass roots and separates them into left and right sides, so there is no chance of them accumulating in front of the drive case and interfering with smooth tilling work.

[Brief explanation of drawings]

FIG. 1 is a front view of the rotary part of a rotary tiller equipped with the rotary cover of the present invention, FIG. 2 is a side view of the same, and FIG. 3 is a perspective view of the auxiliary cover used in the present invention. 1... Drive case, 2... Rotary shaft, 3... Tilling claw, 4... Rotary cover, 6... Auxiliary cover, 8...Plate, 9...Cutting blade, 11...Supporting metal fittings.

Claims (1)

[Scope of utility model registration request] At the front of the rotary cover of the center-driven rotary tiller, a plate is provided that extends downward in front of the rotary cover and slopes diagonally upward in the middle, and
A rotary cover for a rotary tiller, characterized in that a cutting blade is provided at the center of the lower surface of the plate, the cutting blade being located in front of the drive case and extending downward.