JP7351524B2 - tillage equipment - Google Patents

Description

The present invention relates to a tillage device. Specifically, the present invention relates to a tillage device that can suppress the adhesion of soil and the like to the cover (upper cover) and the leveling plate.

The tilling device performs tilling work by rotatably holding a laterally long tilling body in a frame. The tiller is provided with a cover (upper cover) that covers the upper part of the tiller to prevent the tilled soil from scattering, and a leveling plate attached to the rear of the cover for leveling the tilled soil.

It is known that a part of the tilled soil thrown up by the tilling claws of the tilling body adheres to the inner circumferential surface of the cover and becomes thick, and eventually acts as rotational resistance to the rotating tillage claws, causing power loss. It is being
For this reason, Patent Document 1 discloses a device in which a member is arranged to prevent soil from adhering to the inner circumferential surface of the cover.

According to Patent Document 1, "a flexible cover body 30 is provided on the inner surfaces of the upper cover 15 and the rear cover 20 and extends from the front end of the upper cover 15 to the front side of the rear cover 20. An elastic support member 43 extending from the upper cover 15 along the inner surface of the rear cover 20 is provided between the front surface and the inner surface of the rear cover 20, and the rear end of the cover body 30 is connected to the elastic support member 43 to support the rear cover 20. The cover body, which is a member for preventing soil from adhering, is placed on the upper cover that covers the tiller and the rear cover, which is a ground leveling plate. It is said that the rear end side of the cover body vibrates.

JP2009-254257A

The rear end side of the cover body shown in Patent Document 1 is supported by an elastic support member, and the rear end is a free end. Since the buffer member is disposed on the free end side and brought into contact with the rear cover body, a gap is created between the rear cover and the cover body. There is a problem in that dust and dust generated during the tilling work reaches and adheres to the fulcrum shaft of the rear cover body through this gap, causing trouble in rotation.

Since the front side of the cover body is attached to the entire inside surface of the upper cover, the cover body itself cannot vibrate and cannot exhibit the effect of preventing soil from adhering. Furthermore, not only does the cover use a large area, but also an elastic support member and a buffer member must be provided to vibrate the rear end of the cover, making the structure complicated and expensive.
The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a tillage device that can suppress the adhesion of soil, etc. to the cover (upper cover) and the leveling plate with a simple configuration.

This invention is
A frame provided with a mounting part to be mounted on the traveling aircraft,
a cultivating body rotatably provided on the frame;
a cover placed above the tiller;
a land leveling body provided at the rear of the tilling body so as to be rotatable up and down;
an elastic plate having one end attached between the front end and the rear end of the cover in the front-rear direction, an intermediate part attached to the frame, and the other end attached between the front end and the rear end of the ground leveling body in the front-rear direction;
Equipped with
The rear side of the elastic plate can be freely relaxed as the earth leveling body rotates, and the elastic plate has a bulge formed to bulge toward the tilling body as the land leveling body rotates downward. one end and the other end of the elastic plate are attached at a position where the bulge does not occur when the earth leveling body is rising.
A tillage device characterized by
Pertains to.

This invention further includes:
The cover has a front end attached to the frame and a rear end of the cover as a free end;
an abutting portion provided on the lower surface of the rear end of the cover and abutting against the frame;
A tillage device characterized by comprising:
Pertains to.

This invention further includes:
The bulging portion does not invade the rotation area of the cultivating body.
A tillage device characterized by
Pertains to.

This invention further includes:
The bulging portion invades a rotation region of the cultivating body,
A tillage device characterized by
Pertains to.

To provide a tillage device capable of suppressing the adhesion of soil, etc. to a cover (upper cover) and a ground leveling plate with a simple configuration.

1 is a plan view of a first embodiment of a tilling device according to an embodiment of the present invention, and the left side in the figure is the front in the direction of travel. It is a side view of the first example of the tilling device according to the example of the present invention, and the left side of the figure is the direction of travel. 1 is a side cross-sectional view of a first embodiment of a working machine according to an embodiment of the present invention, showing a state in which the ground leveling body is at the lowest end, and the left side in the figure is the forward direction in the traveling direction. 1 is a side sectional view of the first embodiment of the working machine according to the embodiment of the present invention, showing a working state in which the ground leveling body is in the middle of rising, and the left side in the figure is the forward direction in the traveling direction. 1 is a side cross-sectional view of a first embodiment of a working machine according to an embodiment of the present invention, with the ground leveling body in the raised state, and the left side in the figure is the front in the traveling direction. FIG. 2 is a partially enlarged side sectional view of the first embodiment of the working machine according to the embodiment of the present invention, showing a state in which the abutting portion is lifted from the frame, and the left side in the figure is the front in the traveling direction.

A first embodiment of this invention will be described based on FIGS. 1 to 6.
1 is a tillage device. A traveling body (not shown) such as a tractor is installed on the left side of FIGS. 1 to 5.
2 is a frame installed in the tilling device 1.
The frame 2 is provided with a mounting portion 20 that is mounted on the traveling aircraft body.

201 is a top mast. 202 is a top link pin. 203 is a lower plate. 204 is a lower link pin. These constitute the mounting section 20 and attach the tilling device 1 to the traveling machine body.
21 is an input case. 211 is an input shaft.
22 is a pipe frame. 23 is a front frame. 24 is a rear frame. 25 is a side plate. 251 is a transmission case.
The frame 2 includes a pipe frame 22, a front frame 23, and a rear frame 24.

The input shaft 211 inputs driving force to the tilling device 1 from the PTO shaft of the traveling machine. The driving force input to the input shaft 211 is distributed to the left and right pipe frames (frames) 22 by an internally provided bevel gear in the input case 21, and then transmitted to the transmission case 251.

3 is a cultivating body. The tiller 3 is rotatably provided on the frame 2.
31 is a rotor shaft that constitutes the tiller 3. 32 is a tiller body which is a tiller claw. In the first embodiment, four tilling claws 32 are mounted radially around the rotor shaft 31 at equal intervals, and in a plurality of rows in the axial direction. However, as shown in the first embodiment, there are no limitations to the arrangement of the tilling claws 32 in the circumferential direction or the axial direction, or the method of fixing the tilling claws 32 to the rotor shaft 31. The rotor shaft 31 drives the tiller 3 in the rotation direction of the rotor shaft 31 .

4 is a cover. The cover 4 is an upper cover body and is arranged above the tiller 3. The cover 4 (upper cover body) is formed so that its front end is attached to the front frame 23 and the rear end of the cover 4 is a free end.
41 is a contact portion. The contact portion 41 is formed on the lower surface of the rear end portion of the cover 4 and is brought into contact with the frame 2 (rear frame 24).

5 is a leveling body. In this first embodiment, the ground leveling body 5 is composed of a plate-shaped ground leveling plate. The ground leveling body 5 is vertically rotatable at the rear of the rear frame 24, behind the cover 4 (upper cover body), and at the rear of the front tiller 3. The ground leveling board 5 levels the cultivated ground.
51 is a hinge. The hinge 51 connects the cover 4 and the ground leveling body 5.

6 is an adhesion prevention body. 61 is an elastic plate. The elastic plate 61 is made of a plate-shaped rubber member, is deformable, and constitutes the adhesion prevention body 6 . The elastic plate 61 may have a reinforcing material inside.

a, b, and c are attachment positions of the elastic plate 61 to the cover 4 (upper cover body), the rear frame (frame) 24 of the frame 2, or the ground leveling body 5, respectively.
The attachment position a is provided between the front end and the rear end of the cover 4 (upper cover body), which is a midway position in the front-rear direction of the cover 4 (upper cover body).
The attachment position b is provided at the rear end of the rear frame 24 of the frame 2.
The attachment position c is provided between the front end and the rear end of the cover 4 (upper cover body), which is a midway position in the front-rear direction of the ground leveling body 5, which is a ground leveling plate.

At attachment position a, one end of the elastic plate 61 is attached to the cover 4 (upper cover body) with bolts and nuts. At attachment position b, the elastic plate 61 is attached to the frame 2 at the intermediate portion thereof with bolts and nuts. At attachment position c, the other end of the elastic plate 61 is attached to the leveling plate 5 with bolts and nuts.

The elastic plate 61 is made of a plate-shaped rubber member and is deformable, so that the rear side of the elastic plate 61 can be relaxed as the ground leveling body that is the leveling plate 5 rotates. The elastic plate 61 bulges toward the cultivating body 3 as the ground leveling body, which is the ground leveling plate 5, rotates downward to form a bulged portion 62. The bulging portion 62 has approximately the same length as the horizontal width of the ground leveling plate 5 in the traveling direction, and is formed uniformly in the horizontal direction.
As the ground leveling plate 5 rotates downward, a portion of the elastic plate 61 bulges toward the cultivator 3 to form a bulge 62 .

As shown in FIGS. 3 and 4, when the earth leveling body 5 is lowered, the remaining portion of the elastic plate 61 becomes longer than the distance between the mounting position b and the mounting position c, and the elastic plate 61 moves in the front-rear direction. Since the elastic plate 61 sandwiched between the attachment position b and the attachment position c is not in a tensioned state, a convexly protruding bulge 62 is generated so that the elastic plate 61 is raised toward the tiller 3 side.
When the ground leveling body 5 is located at the lowest end as shown in FIG. The bulging portion 62 is formed to be raised toward the tiller 3 side, and the bulging portion 62 bulges out a little more than shown in FIG. 4, and the amount of bulging increases.
As shown in FIG. 4, when the earth leveling body 5 is in the working position where it is in the middle of rising, the bulging part 62 is formed by the elastic plate 61 rising toward the tilling body 3 side, and the bulging part 62 is formed at the mounting position b and the mounting position b. The bulging portion 62 bulges slightly less than that shown in FIG. 3 by the distance of the elastic plate 61 from the distance of the position c. The straight-line distance between mounting position b and mounting position c shown in FIG. 4 is longer than the straight-line distance between mounting position b and mounting position c shown in FIG.

As shown in FIGS. 5 and 6, when the earth leveling body 5 is rising, the elastic plate 61 is pulled in the front-back direction and is in a tension state. Since the distances 61 are equal, the bulge 62 does not occur.
In FIG. 5, the ground leveling body 5 is in the raised state. In FIG. 6, the abutment portion 41 is in a lifted state from the frame.

In this first embodiment, the amount of bulge of the bulge portion 62 is changed depending on the distance between the mounting position b and the mounting position c, and the amount of rise and fall of the earth leveling body 5.
As shown in FIG. 5, when the ground leveling body 5 is in the highest state, there is no bulge in the bulging part 62, and as shown in FIG. The distance between the mounting positions b and c, and the length of the elastic plate 61 are set so that the length of the elastic plate 61 is large.

In the first embodiment, by setting the length between the mounting position b and the mounting position c and selecting and setting the length of the elastic plate 61, the amount of expansion and the ability to relax the elastic plate 61 are adjusted. As the ground leveling body, which is the ground leveling plate 5, rotates downward, the bulging portion 62 that bulges toward the tilling body 3 side is set to a bulging amount that does not intrude into the rotation area R of the tilling body 3.
If the distance between attachment position b and attachment position c is narrowed, the amount of bulge will increase. If the distance between mounting position b and mounting position c is widened, the amount of bulge will be reduced. If the length of the elastic plate 61 between the attachment position b and the attachment position c is increased, the amount of bulge will increase. The amount of bulge can be reduced by shortening the length of the elastic plate 61 between the attachment position b and the attachment position c.
R is the rotation area of the tip of the tiller 3. In the first embodiment, the bulging portion 62 does not invade the rotation region R of the tiller 3.

The elastic plate 61 is made of a rubber plate, and is provided to have approximately the same width in the left and right directions in the traveling direction of the cover 4 as the upper cover body or the ground leveling body 5 as the ground leveling plate. Therefore, dust and dirt generated from the tiller 3 are prevented from moving to the pivot point of the earth leveling body 5 over the entire working width.

Soil scattered from the tiller 3 collides with the elastic plate 61 . As a result, the front end side of the elastic plate 61 and the rear end side of the elastic plate 61 vibrate up and down while being bent, starting from the intermediate position of the elastic plate 61, and the soil adhering to the elastic plate 61 is removed.

Since the rear end of the cover 4 is a free end, the cover 4 itself also vibrates up and down due to the collision of the soil scattered from the tiller 3. Therefore, soil adhering to the inner surface of the cover 4 itself is shaken off. Due to this effect, the elastic plate 61 can sufficiently shake off soil without having to be laid over the entire inner surface of the cover 4.
This vibration of the cover 4 further vibrates the front end of the elastic plate 61 connected to the cover 4, so that dirt adhering to the elastic plate 61 is removed.

The front end of the elastic plate 61 is attached to the middle part (rear end side) of the cover 4, and the rear end of the elastic plate 61 is attached to the middle part of the ground leveling body 5, so that the front and rear middle parts of the elastic plate 61 Dust and dirt do not directly hit the rotational fulcrum of the ground leveling body 5 located above.
Therefore, it is possible to suppress the invasion of soil to the rotational fulcrum of the earth leveling body 5, so that no trouble occurs in the rotation of the earth leveling body 5, and proper rotation can be maintained.

The rear end side of the elastic plate 61 repeatedly curves toward the cultivating body 3 and stretches linearly as the soil leveling body 5 moves up and down, so that the soil stuck to the elastic plate 61 is peeled off. It becomes easier. In this state, when the soil scattered from the tiller 3 further collides with the soil, the elastic plate 61 is vibrated, and the soil adhering to the elastic plate 61 can be easily dropped. Therefore, it is possible to prevent soil from continuously adhering to the elastic plate 61.

Since the elastic plate 61 is a rubber plate and is made of a material and has a thickness that does not significantly deform under its own weight, the bulging portion 62 does not easily bend to a large extent. The bulging portion 62 can generate vibrations in the bulging portion 62 by colliding the scattered soil with the bulging portion 62 which maintains an appropriate tension, thereby preventing soil from adhering to the elastic plate 61. Therefore, the bulging portion 62 located on the upper side of the earth leveling body 5 can prevent soil from adhering to the upper side of the earth leveling body 5.

Since the cover 4 is restricted from moving downward from the rear frame 24 (rear frame) that is the frame 2 by the contact portion 41, it does not swing extremely much and the front end side of the elastic plate 61 is prevented from moving downward from the rear frame 24 (rear frame). This can prevent collisions with Furthermore, since the contact portion 41 contacts the rear frame 24 (rear frame) at the lower end position of vertical swinging, the swinging of the cover 4 suddenly stops, resulting in a large acceleration and the You can shake off the soil.

In the first embodiment, the bulging portion 62 does not intrude into the rotation region R of the tiller 3 regardless of the amount of rotation or the amount of descent and rise of the ground leveling plate 5, thereby avoiding collision between the rotating tiller 3 and the elastic plate 61. As a result, the loss of rotational power of the tiller 3 can be reduced.

As shown in FIG. 5, since the bulging surface of the bulging portion 62 changes from a curved shape to a straight line shape, soil, etc. stuck to this portion d easily comes off. Similarly, as shown in FIG. 6, the surface e of the elastic plate 61 between the mounting position a and the mounting position b changes from a curved shape to a straight shape depending on the top and bottom of the cover 4, as shown in FIG. Soil, etc. that is stuck to the parts easily comes off.

In the first embodiment, the explanation has been made assuming that the bulge 62 does not enter the rotation region R, but as shown in the second embodiment, the bulge 62 can also be made to enter the rotation region R. In this case, the soil can be forcibly and directly dropped from the elastic plate 61. This second embodiment is effective in the case of soil with strong adhesive properties. Incidentally, the collision between the tilling body 3 and the bulging portion 62 occurs only when the rotational position of the soil leveling body 5 is at the lowest position, so the collision occurs when the soil leveling body 5 is rotated upward during tilling work. is not performed, reducing power loss during work.
Furthermore, as a modification of this example, the middle part of the elastic plate 61 may not be fixed to the frame 2. In this case, since the number of fixing points can be further reduced, it is expected that ease of assembly and maintenance will be improved.

A second embodiment, not shown, will be described.
In the second embodiment, by setting the length between the mounting position b and the mounting position c and selecting the length of the elastic plate 61, the amount of expansion and freedom of relaxation are adjusted, and the elastic plate 61 is the leveling plate 5. A bulging portion 62 that bulges toward the tilling body 3 as a certain earth leveling body 5 rotates downward is set to have a bulging amount that intrudes into the rotation region R of the tilling body 3.
In the second embodiment, the bulging portion 62 enters the rotation region R of the cultivating body 3, causing the rotating cultivating body 3 to collide with the bulging portion 62, and forcing the bulging portion 62 to vibrate. The vibration of the bulge 62 can shake off soil adhering to the elastic plate 61. Furthermore, since the rotating tillage body 3 can come into contact with the bulge 62, soil attached to the bulge 62 can be scraped off with the tiller claws 32. After the tilling work is completed, the soil adhering to the bulge 62 can be directly removed by raising the tilling device 1 from the ground, lowering the leveling plate 5, and then rotating the tiller body 3. .

1 Tillage device 2 Frame 20 Mounting part 201 Top mast 202 Top link pin 203 Lower plate 204 Lower link pin 21 Input case 211 Input shaft 22 Pipe frame (frame)
23 Front frame (frame)
24 Rear frame (rear frame, frame)
25 Side plate 251 Transmission case 3 Cultivating body 31 Rotor shaft (cultivating body)
32 Cultivating claw (cultivating body)
4 Cover (upper cover body)
41 Contact part 5 Earth leveling body 51 Hinge 6 Adhesion prevention body 61 Elastic plate 62 Swelling part R Rotation area

Claims (4)

A frame provided with a mounting part to be mounted on the traveling aircraft,
a cultivating body rotatably provided on the frame;
a cover placed above the tiller;
a land leveling body provided at the rear of the tilling body so as to be rotatable up and down;
an elastic plate having one end attached between the front end and the rear end of the cover in the front-rear direction, an intermediate part attached to the frame, and the other end attached between the front end and the rear end of the ground leveling body in the front-rear direction;
Equipped with
The rear side of the elastic plate can be freely relaxed as the earth leveling body rotates, and the elastic plate has a bulge formed to bulge toward the tilling body as the land leveling body rotates downward. one end and the other end of the elastic plate are attached at a position where the bulge does not occur when the earth leveling body is rising.
A tillage device characterized by: The cover has a front end attached to the frame and a rear end of the cover attached to the frame.
As a starting point,
an abutting portion provided on the lower surface of the rear end of the cover and abutting against the frame;
The tillage device according to claim 1, further comprising: The bulging portion does not invade the rotation area of the cultivating body.
The tillage device according to any one of claims 1 to 2, characterized in that: The bulging portion invades a rotation region of the cultivating body,
The tillage device according to any one of claims 1 to 2, characterized in that:

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