JPS63317001A - Cover structure for rotary cultivator - Google Patents

Abstract

PURPOSE:To facilitate the opening and closure of a cover, by pivoting a cover to a closing plate in a manner to be freely swivellable along the outer face of the plate and approachable to or separable from the face, pressing the cover toward the outer side face and providing the back side of the cover with an insertion part which can be inserted into a through-hole of the closing plate. CONSTITUTION:In the case of opening a through-hole 11, the lower end of a cover 12 is pinched, lifted against the force of a helical spring 14 and an insertion part 12a is disengaged from the through-hole 11 and swiveled as it is. When the through-hole 11 is to be closed, the lower end of the cover 12 is pinched and swiveled to the side of the through-hole 11 until it reaches a proper position and the insertion part 12a is inserted into the through-hole 11 taking advantage of the force of the helical spring 14. The troublesome operation such as the insertion and removal of bolt can be eliminated and the opening and closing operation of the cover can be simplified.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a rear cover with a notch for attaching a cultivator, a removable blocking plate for closing the notch, and a removable blocking plate. The present invention relates to a cover structure for a rotary tiller, in which an insertion hole is formed for a support rod of a soil cultivator, and a lid body that closes the insertion hole is provided so as to be openable and closable.

[Conventional technology]

Generally, when attaching a soil tiller to a rotary tiller,
There are two installation options depending on the height of the ridges to be formed.

That is, when plowing shallowly and raising the ridges low, remove the cover plate from the rear cover, insert the soil cultivator into the notch, and use the hanging soil as a leveling tool.

In addition, when plowing deeply and raising the ridges high, the fifth
As shown in the figure, insert the support rod of the culture pot into the insertion hole without removing the blocking plate, and then insert the support rod of the culture pot over the culture pot (
8) is used to prevent soil scattering. Therefore, when raising the ridges high, the lid must be opened to open the insertion hole, and in other cases, for example, when doing ordinary tilling work, the lid must be closed and the insertion hole must be closed. .

In conventional rotary tillers, the lid was closed and temporarily fixed using bolts (Japanese Utility Model Publication No. 59-136905).

[l', '1 problem that the invention attempts to solve] Therefore,
The bolts had to be inserted and removed each time the lid was opened and closed, which was troublesome. Moreover, when the bolts rusted, insertion and removal became even more difficult.

The present invention was developed in view of these circumstances, and its purpose is to enable the lid of the insertion hole to be opened and closed easily.

[Means for solving problems]

The characteristic configuration of the present invention is that the lid body is pivotally supported on the closing plate so as to be able to swing freely along the outer surface of the closing plate, and to be movable in the distance from and near the outer surface of the closing plate, and is elastically biased toward the outer surface side. M on the lid
A fitting part that can be fitted into the insertion hole is formed protrudingly on the side, and its functions and effects are as follows.

[For production]

That is, when opening the insertion hole, the lid body is displaced in a direction away from the outer surface of the closing plate against the elastic biasing force, and the fitting portion formed on the back side is caused to escape from the insertion hole. Then, in this state, the lid body is swung along the outer surface of the closing plate. Further, when closing the insertion hole, the lid body is swung toward the insertion hole along the outer surface of the closing plate. Then, when the lid body is in the proper position, the fitting portion is automatically fitted into the insertion hole by the elastic biasing force, and the insertion hole is closed.

〔Effect of the invention〕

Therefore, the opening and closing of the cover of the insertion hole according to the present invention can be done easily and in a short time without having to take the trouble of inserting and removing screws or using tools.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

FIG. 4 shows a side drive type rotary tiller (A) which is connected to the rear of an agricultural tractor so that it can be raised and lowered.

The side drive type rotary tiller (A) has a chain case (4) connected to one end of a cylindrical transmission frame (3) in which a transmission shaft is installed, and a side frame attached to the other end. (5), and a rotary tilling claw shaft (6) is horizontally suspended between the chain case (4) and the lower end of the guide frame (5), and a rotary cover covering the upper part of this tilling claw shaft (6) is connected. (7) is arranged to form an outline.

A v-shaped notch (9) into which the front end of the soil cultivator is inserted is formed at the rear end side of the rear cover (8) which is vertically installed at the rear of the rear cover (7). ) is removably provided with a triangular closing plate (10) that closes the notch (9).

As shown in FIG. 3, the closing plate (10) has a bent portion (C) extending across the entire left and right width at its upper part, and when the closing plate (10) is attached, as shown in FIG. , cultivator (B
An oval insertion hole (11) for inserting the support rod (16) of ) is formed in the center of this bent part, and this insertion hole (
11) is provided with a lid body (12) for opening and closing. To explain this lid body (12) in detail, as shown in FIGS. 1 and 2, a bolt (
13) into the hole at the top of the lid (12), loosely fit the helical spring (14) into the protruding part, and tighten the helical spring with two lock nuts (15) screwed together on the tip side. The spring (14) is in the pressure accumulation state. Therefore, the lid (
12) is a block Fi, (10) with the bolt (13) as the axis.
can swing freely along the outer surface of the helical spring (1
A state in which it is possible to move both far and near relative to the outer surface of the blocking plate by utilizing the compression of 4) and the gap between the holes, and is urged toward the outer surface of the blocking plate (12) by the elastic force of the helical spring (14). It has become. A fitting part (12a) which can be fitted into the insertion hole (11) and has the same shape as the insertion hole (11) is formed protruding from the back side of the lid (12) for positioning purposes.

The insertion hole (11) is opened and closed according to the procedure described in the operation section. That is, when opening the insertion hole (11), pinch the lower end of the lid (12) and lift it against the helical spring (14) to remove the fitting part (12a) from the insertion hole (11). , it oscillates as it is. In addition, when closing the insertion hole (11), pinch the lower end of the lid (12) and swing it toward the insertion hole (11), and when it comes to the appropriate position, use the spiral spring (
14) to push the fitting part (12a) into the insertion hole (
11).

The biasing force of the helical spring (14) is applied to the lock nut (1
It can be freely adjusted by changing the degree of threading in 5).

In carrying out the present invention, the helical spring (14)
Instead, a plate spring may be used at the swinging fulcrum portion of the lid body (12).

Reference numerals are included in the claims for convenience of comparison with the drawings, but the invention is not limited to the structure shown in the accompanying drawings.

[Brief explanation of the drawing]

The drawings show an embodiment of the cover structure of the rotary tiller according to the present invention, in which Fig. 1 is a rear view of the lid, Fig. 2 is a sectional view taken along the line nn of Fig. The rear view and FIG. 4 are perspective views of the rotary tiller, and FIG. 5 is a side view of the rotary tiller showing the state in which the soil cultivator is attached when raising high ridges. (8)...Rear cover, (9)...Notch, (10)...Closing plate, (11)...
・Insertion hole, (12)... Lid body, (12a)...
...Inset part.

Claims (1)

[Claims] A notch (9) for attaching the soil cultivator is formed in the rear cover (8), and a closing plate (10) is removably provided to close this notch (9). This is a cover structure for a rotary tiller, in which a support rod insertion hole (11) is formed, and a lid (12) that closes the insertion hole (11) is provided so as to be openable and closable. Board (10
) is pivotally supported to be able to swing freely along its outer surface and to be movable in a distance relative to the outer surface of the cover plate, and is elastically biased toward the outer surface side, and the insertion hole is formed on the back side of the cover body (12). (11
) A cover structure for a rotary tiller, in which a fitting part (12a) that can be fitted into the rotary tiller is formed in a protruding manner.