JPH0449843Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] The present invention relates to a rotary soil lifting device used for lifting soil into ridges, and more specifically, a rotary cover installed on an atsupakatsu type rotary tilling device. a scattering prevention plate that is pivotally supported to be able to swing up and down so that its lateral opening degree can be freely adjusted, and that is located at the front of the rotary tiller to guide the soil that has been plowed and scattered forward to the side; This invention relates to a rotary soil lifting device equipped with a rotary soil lifting device.

[Conventional technology]

While tilling with an Atsupakatsu-style rotary tiller, the tilled soil is applied to the anti-scattering plate installed at the front of the rotary tiller, along the inner surface of the rotary cover, and onto the ridges on the side of the machine. In guiding and discharging, the rotary cover is designed so that the lifting height can be adjusted even when the height of the ridge varies depending on the type of crop, and there is no problem even when the tilling claws attached to the rotary tilling device are different. Its lateral opening is adjustable for ease of use.

Therefore, in the past, the scattering prevention plate was also made of soft rubber and had a vertical width so as to correspond to the degree of opening of the rotary cover.

[Problem that the invention attempts to solve]

However, with rubber scattering prevention plates, the scattering prevention plates swing back and forth due to the force of the tilled soil, where the force of the soil is absorbed and the soil tends to fall. The problem was that the direction of soil scattering was not constant, making it difficult to guide the soil toward the rotary cover.

In contrast, as disclosed in, for example, Japanese Utility Model Application Publication No. 152203/1983, the scattering prevention plate is made of a steel plate to ensure that soil scattered by plowing is removed from the rear surface of the scattering prevention plate. It has also been proposed to guide the rotary cover toward the rotary cover side, but if the structure is configured as in the conventional publication, when the opening degree of the rotary cover is adjusted as described above, especially when the opening degree of the cover is increased. In this case, there may be a gap between the front lower surface of the cover and the upper edge of the scatter prevention plate, and the plowed soil from this gap will scatter towards the front of the aircraft, making it impossible to lift the soil onto the ridges. There were flaws.

The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to ensure that plowed soil can be lifted onto the ridges in a device that adjusts the opening degree of a rotary cover.

[Means for solving problems]

That is, the characteristic configuration of the present invention is that the scattering prevention part formed of a flexible resin plate is extended in a cantilever shape on both the left and right sides of the scattering prevention plate, and the upper edge of the scattering prevention part is directed outward and upward. The structure is tilted and the upper edge of the scattering prevention part is brought into contact with the lower front surface of the rotary cover, and its functions and effects are as follows.

[Effect]

The upper edge of the scattering prevention part of the resin plate extending on both the left and right sides of the scattering prevention plate is always in elastic contact with the lower front surface of the rotary cover, regardless of the opening degree adjustment of the rotary cover. Therefore, even if the lateral opening of the rotary cover is adjusted according to the shape of the ridge, the degree of soil lifting depending on the type of crop, or the type of tiller, the lower front surface of the rotary cover and the scattering prevention No gap is formed between the plate and the upper edge. Moreover, this scattering prevention part is made of a resin plate, and in addition to being flexible, it also has a certain degree of shape retention.
The force of the soil that comes into contact with the rear surface can be guided toward the rotary cover without being attenuated unlike conventional rubber hanging plates.

[Effect of idea]

As a result, it has become possible to freely adjust the opening degree of the rotary cover and to reliably lift soil that has been plowed and scattered onto the ridges.

〔Example〕

Hereinafter, embodiments of the present invention will be described based on the drawings.

FIG. 5 shows a walk-behind cultivator equipped with a rotary soil lifting device according to the present invention. 6 and is equipped with a rotary soil lifting device 5 at the rear of the aircraft.
From the center of the aircraft toward the aircraft, press the control handle 8.
It is constructed by extending.

The rotary soil lifting device 5 is provided with an up-percut type rotary tilling device 3 on a rotary frame 2 extending rearward from the rear of the machine body,
A scattering prevention plate 4 is disposed at the front of the rotary tilling device 3, and a tail wheel 14 is connected to the rear end of the rotary frame 2 so as to be movable up and down.

As shown in FIGS. 1 and 5, the rotary tilling device 3 includes a tilling claw 7 rotatably supported on the lower end of a rotary case 15 attached to the rotary frame 2, and a tilling claw 7. 7
The structure includes a pair of left and right rotary covers 1, 1 that cover the upper part of the left and right rotary covers 1.
is pivotally attached to the rotary frame 2 by a hinge so as to be swingable about an axis in the longitudinal direction of the body, so that the degree of lateral opening of the rotary case 15 can be adjusted as appropriate.

Next, the structure of the rotary cover 1 and the attachment structure of the rotary cover 1 to the rotary frame 2 will be explained in detail.

As shown in FIGS. 1 to 5, the rotary cover 1 includes a pair of left and right upper covers 1a, 1a disposed on the left and right sides of the rotary case 15, and a lateral side at the side end of the upper cover 1a. an extension cover 1b movably connected to the extension cover 1b, a side cover 1c pivotally attached to the outer end of the extension cover 1b by a hinge so as to be able to swing vertically, and a rear cover hanging down from the rear end of the upper cover 1a. 1d. A plurality of horizontally long rails 17 are fixed on the upper surface of the upper cover 1a, and the extension cover 1b is placed on the upper cover 1a via the rails 17 with their ends overlapping each other. . A through hole 19 for inserting a slide fitting is formed at the end of the extension cover 1b on the upper cover 1a side, and the engaging portion 20a of the slide fitting 20 inserted through this through hole 19
is slidably inserted into and engaged with the engagement groove 21 of the rail 17, and the slide fitting 2
A spring 22 is interposed between the wing nut 20b and the upper surface of the extension cover 1b, so that the extension cover 1b can be elastically held between the wing nut 20b and the rail 17.

On the other hand, a column 12 is erected and fixed on the upper surface of the rotary frame 2, and a connecting bracket 13 is fitted onto the upper part of the column 12 so as to be movable up and down, and can be fixed at an appropriate position above and below the column 12 with a set bolt 16. It's getting old. Further, a stay 1 is attached to the upper surface of the extension cover 1b via a bracket.
A stay 18 is pivotally connected to the stay 18, and the upper end of the stay 18 is pivotally connected to the connection bracket 13.

Therefore, by loosening the wing nut 20b,
The extension cover 1b can be moved laterally with respect to the upper cover 1a, and the extension cover 1b and the upper cover 1a are elastically pressed against each other by the urging force of a spring 22, so that the work can be carried out easily. By pushing and pulling the extension cover 1b by hand, the width of the rotary cover 1 can be changed relatively easily even on the way, and the width of the rotary cover 1 can be adjusted according to the ridge width and plowing width. .

Further, a cylindrical member 24 is fixed to the front part of the rotary frame 2, and a scattering prevention plate 4 is attached to this cylindrical member 24.
A fixed frame 9 is vertically movable and fixedly supported by a set bolt 25, and the soil plowed and scattered in the front of the machine body by the upper cut type rotary tilling device 3 is applied to the rear surface of this scattering prevention plate 4. The soil is guided along the inner surfaces of the rotary covers 1 on both sides and is configured to be able to lift soil onto the ridges on both sides of the machine body.

As shown in FIG. 1, the anti-scattering plate 4 includes a central anti-scattering part 4a made of a steel plate fixed to the lower part of the fixed frame 9, and cantilevers on both sides of the central anti-scattering part 4a. It is composed of a side scattering prevention part 4b that extends and is fixed with bolts. The side scattering prevention part 4b is formed of a flexible resin plate made of polypropylene or polyethylene, and the upper part of the side scattering prevention part 4b is provided with a flexible part 4c whose upper edge is inclined outwardly and upwardly. is integrally provided, and this flexible portion 4c is connected to the rotary cover 1.
It is designed to come into contact with the lower front surface of the That is, when the rotary cover 1 is opened to its maximum opening as shown in FIG.
The inclined surface of the upper edge contacts the lower surface of the rotary cover 1, and as the rotary cover 1 is lowered from the maximum opening degree, the flexible portion 4c curves inward while being in contact with the inner surface of the rotary cover 1. It's getting old.

Therefore, according to the above configuration, even when the lateral opening degree of the rotary cover 1 is adjusted up or down, the flexible portion 4c of the scattering prevention plate 4b always remains in elastic contact with the lower front surface of the rotary cover 1. Even if the rotary cover 1 is in a state where the
There is no gap in the front part of the rotary tilling device 3, and the soil that has been scattered and tilled forward by the drive of the rotary tilling device 3 can be reliably guided to the side of the machine body. Furthermore, the anti-scattering portion 4a is formed of a resin plate as described above, and soil is difficult to adhere to the rear surface thereof.

[Another example]

The entire scattering prevention plate 4 may be composed of an integral resin plate. Further, the scattering prevention plate 4 may be formed of a rubber plate that is somewhat hard and flexible. Further, the rotary cover 1 may be opened only on one side to lift the soil. In the above embodiment, an example was explained in which the earth lifting device was connected to a walk-behind cultivator, but it may also be connected to the rear part of an agricultural tractor.

Note that although reference numerals are written in the claims section of the utility model registration for convenience of comparison with the drawings, the present invention is not limited to the structure of the attached drawings by such entry.

[Brief explanation of the drawing]

The drawings show an embodiment of the rotary soil lifting device according to the present invention, in which Fig. 1 is a perspective view of the main part, Fig. 2 is a side view of the main part of the rotary cover, and Fig. 3 is a longitudinal sectional front view of the main part of the rotary cover. FIG. 4 is an enlarged sectional view of the main part of the rotary cover, and FIG. 5 is an overall side view of the walk-behind cultivator. 1... Rotary cover, 3... Rotary tilling device, 4... Scattering prevention plate, 4b... Scattering prevention part, 4
c... Upper edge of the scattering prevention part.

Claims (1)

[Scope of utility model registration request] A rotary cover 1 provided on an uppercut type rotary tilling device 3 is pivotally supported so as to be able to swing up and down, so that its lateral opening degree can be freely adjusted. A rotary soil lifting device is equipped with a scattering prevention plate 4 that guides the soil scattered by plowing to the side, and the scattering prevention plate 4 is formed of flexible resin plates on both left and right sides. The prevention part 4b extends in a cantilevered manner, and the upper edge of the scattering prevention part 4b is inclined outward and upward, and the upper edge 4c of the scattering prevention part 4b is brought into contact with the lower front surface of the rotary cover 1. A rotary soil unloading device.