JPS6142323Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates primarily to a rotary tillage device for cultivating a field, and particularly to a tillage device designed to reduce the adhesion of tilled soil to its cover and apron.

In a known rotary tilling device, a cover part is provided on the upper side of a tilling rotor supported on a horizontal axis, and an apron (rear cover) is pivotally attached to the rear end of the cover part. The inner peripheral surfaces of the cover part and the apron are usually made of steel plates.
When the soil to be cultivated is highly viscous, such as a paddy field, the soil that is cultivated by the tilling rotor and thrown out in the rotating direction adheres to the inner surface of the cover and apron, and as the amount of soil adheres increases, not only does it increase friction with the rotating outer surface of the tilling rotor and increase the power required, but if the amount of soil adheres even more, the tilling rotor will no longer be able to rotate.In addition, the weight of the tilling equipment will increase, putting a greater strain on the hydraulic cylinder of the tractor's three-point linkage and upsetting the weight balance with the tractor.

In view of the above circumstances, the present invention fixes a large number of narrow steel members at equal pitches in the left and right direction along the circumferential direction of rotation of the tiller rotor over the entire area of the cover portion and almost the entire front side of the apron. A large number of narrow steel members are placed between the narrow steel members, one end of which is fixed to the lower end of the apron, and the other end of which is a free end, at equal pitches in the left and right direction along the circumferential direction of rotation of the tiller rotor. By installing a rubber cover over both of these narrow steel members, a large amount of soil tilled by the tilling rotor will not adhere to the cover or apron. In addition, it is necessary to remove the soil that has adhered to it during the work by peeling it off and letting it fall, and it is also necessary to remove the soil that has adhered to it during the work. To provide a rotary tiller which solves various conventional problems such as loss of balance.

The present invention will now be described with reference to the illustrated embodiments.

In FIG. 1, reference numeral 1 denotes the main body of the rotary tiller, and the main body 1 has a top mast 2, a lower link connecting pin 3, and an input shaft 4 protruding forward, and the top mast 2 and lower link connecting pin 3 are shown in the figure. The three-point link of the tractor is connected to the input shaft 4, and rotational power is transmitted from the tractor to the input shaft 4. A tilling rotor 5 is pivotally supported in the left and right horizontal directions at the bottom of the main body 1, and is adapted to rotate in the arrow (down cut) direction.

A cover part 6 is provided above the tilling rotor 5, and an apron 9 is pivotally connected to a frame 7 disposed in the left-right direction at the rear of the cover part 6 via a hinge 8.

As shown in FIG. 2, the cover part 6 is constructed by attaching one end of a round steel 11 to a mounting frame 10 provided at the front end along the rotation circumferential direction of the tilling rotor 5 and at equal pitches in the left and right direction via bolts 12. and fix it so that it extends from the entire area of the cover part to almost the entire area of the front side of the apron 9,
Between these fixed round bars 11, 11..., one end is fixed to a flat plate 9a provided at the lower end of the apron 9 via a bolt 13, and the other end is a free end in the rotation circumferential direction of the tilling rotor 5. Round bars 14, 14, etc. are arranged at equal pitches along the left and right directions, and are arranged to be movable (passable) when the apron 9 rotates up and down about the hinge 8.
A rubber cover 15 is placed above the bolts 12 through a spacer 16.
It is firmly fixed. The end of the rubber cover 15 on the side of the apron 9 is a free end that can move forward and backward as the round bars 14, 14, . . . move. Further, the other end of the round bar 11 is a free end, but it may be fixed to the main body 1 side.

The reference numeral 17 is a compression rod of the apron 9, and the reference numeral 18 is a gauge wheel for adjusting the plowing depth.

In the rotary tilling device configured as described above, the soil tilled by the tilling rotor 5 is spread in the circumferential direction from the position where the rotor rotating in the direction of the arrow (down cut) comes out of the soil surface, against the apron 9 and the cover part 6. It was thrown out and the round steel 14,
14... and 11, 11... and are buffered,
Also, large pieces of soil are crushed and fall. Then, the soil that has passed through the round bars 14 and 11 collides with the rubber cover 15 and falls. In this case, if the plowed soil has low viscosity, it is less likely to adhere to the round bars 11, 14 and the rubber cover 15, but if the plowed soil has strong viscosity and is plowed deeply, it will not stick to the tilling rotor 5.
Even when a large amount of soil is thrown out and it tends to stick, it collides with the round steel plates 11 and 14 first, so the adhesion force is weak compared to conventional iron plates, and the soil on the round steel plates 11 and 14
is elastic, and when the apron 9 of the round steel 14 rotates back and forth around the hinge 8, the soil adhering to the round steel 11, 14 and the rubber cover 15 is forcibly peeled off and dropped.

Therefore, a large amount of soil does not adhere to the inner peripheral surfaces of the cover part 6 and the apron 9, making it impossible to till the soil, or increasing the weight of the rotary tilling device, which increases the load on the hydraulic cylinder of the three-point link of the tractor. This prevents the plowing device from becoming too large and from causing the weight balance between the tilling device and the tractor to collapse.

In the above embodiment, the round steels 11 and 14 may be replaced with narrow flat plates made of spring steel.

As explained above, according to the rotary tilling device of the present invention, over the entire area of the cover part 6 and almost the entire area of the front side of the apron 9, along the rotational circumferential direction of the tilling rotor 5, there are many A round steel (narrow steel material) 9 is fixed, and between these round steels 9, 9, one end is fixed to the leveling plate 9a of the apron 9, and the other end is set as a free end along the rotational circumferential direction of the tilling rotor 5. A large number of round bars 14, 14 at equal pitches in the left and right direction
... are disposed so as to be movable by the rotation of the apron 9, and a rubber cover 15 is stretched above both of these round bars 11, 14, so that the tilling rotor 5 tills the tiller and releases it in the circumferential direction. This prevents a large amount of soil from adhering to the cover and apron, and prevents the adhering soil from peeling off and falling, making it impossible to till the soil like in the past. It does not increase the size of the soil or disrupt the weight balance between the tractor and tillage equipment, and large soils are crushed, improving work efficiency.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway side view of the entire rotary tillage device showing one embodiment of the present invention, and FIG. 2 is a plan view taken from the direction of the arrow in FIG. 1 showing how narrow steel members are installed. DESCRIPTION OF SYMBOLS 1... Main body, 5... Tilling rotor, 6... Cover portion, 8... Hinge, 9... Apron, 10... Mounting frame, 11, 14... Round steel, 15... Rubber cover.

Claims (1)

[Scope of utility model registration request] In a rotary tillage device in which a cover section is provided above a tilling rotor that is pivotally supported in the horizontal direction, and an apron is pivotally attached to the rear end of the cover section, the entire area of the cover section and almost the entire area of the front side of the apron, A large number of narrow steel members are fixed at equal pitches in the left and right direction along the rotation circumferential direction of the tilling rotor, and between these fixed narrow steel members, one end is fixed to the lower end of the apron and the other end is fixed to the free end. A large number of narrow steel members are arranged at equal pitches in the left and right direction along the circumferential direction of the rotation of the tilling rotor, and are movable by the rotation of the apron, and a rubber cover is placed above both of these narrow steel members. A rotary tillage device characterized by: