JP2553466Y2 - Rear cover of rotary tiller - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a rear cover of a rotary cultivator to which a ridge can be attached.

[0002]

2. Description of the Related Art Conventionally, as shown in Japanese Utility Model Laid-Open Publication No. Sho 63-71603, a notch having a triangular shape in plan view is provided at the center of a rear cover attached to a rear portion of a rotary cover. It is already known that when a pair of right and left closing plates are hinged to perform a ridge operation, the closing plates are opened to the left and right, and a ridge inserted in a lower portion of the cutout portion is attached to a toolbar.

[0003]

The closing plate of the rear cover in the known rotary cultivator is divided in the left-right direction, is fixed by hinges at the left and right of the notch, and is closed with the closing plate closed. Because the closing plate was connected and fixed with a wing bolt at the center, the ridge was removed, the closing plate was closed, and when performing tilling work in a state in which it was connected to the rear cover, left and right were affected by the pressure of the soil thrown by the tilling claw. However, there is a problem that the connecting portion (flange portion) of the closing plate is deformed and the surface of the fine soil after tilling is not even. Therefore, one end (upper end) of the closing plate is pivotally supported by the rear cover so as to be swingable so that the closing plate can be displaced between a position covering the notch portion and a position where the notch portion is opened by retreating above the rear cover. It is proposed to adopt a configuration in which the rear covers located at the respective positions are fixed. However, in this case, fixing the closure plate at each position with a plurality of bolts has a problem in operability, and there is a fear that the bolts may be loosened and come off due to vibration or the like. Required.

[0004]

SUMMARY OF THE INVENTION Accordingly, the present invention is intended to solve the above-mentioned problem, and covers the upper part of a rotary tilling part with a rotary cover, and attaches a rear cover to a rear part of the rotary cover. A rotary cultivator having a cut-out portion provided with a ridge stand provided at an intermediate portion of the rear cover, and a ridge stand fitted to the cut-out portion; And one end of the closing plate is pivotally attached to the upper portion of the rear cover so as to be vertically rotatable. The closing plate is rotated and retracted to a position covering the notch portion and above the rear cover. In order to fix each of them at the open position, brackets are provided at the left and right ends of the other end of the closing plate, and a pin member urged outward by the spring in the left and right direction is attached to the bracket. On the other hand, the rear cover is provided with a bracket formed with a hole in which the pin member is inserted at a position corresponding to the pin member when the closing plate is located at the position covering the cutout portion and the open position. It is assumed that.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to an embodiment shown in FIGS. The rotary tilling device 1 is connected to a tractor or other towing vehicle, and the input shaft 2 is driven by a PTO shaft such as a tractor. Is fixed to the rear ends of the left and right arms whose front ends are pivotally supported by cylindrical frames 4a, 4a extending to both sides from the gear case 4, and a connecting portion of the arms. Is hung on a mast by an adjusting rod 7 with a handle 7a so as to be vertically tiltable. A rear cover 8 is hinged to a rear portion of the rotary cover 5 so as to be vertically rotatable. The provided pressure rods 9, 9 are held by arms 10, 10 projecting rearward from the toolbar 6 so as to be able to move up and down.

A central portion of the rear cover 8 in the left-right direction is cut out in a substantially triangular shape in plan view, and one end (upper end) of the substantially triangular closing plate 11 is provided at a position corresponding to the cutout portion 26. Notch 2 with hinge 12 provided on rear cover 8
6 and is configured to be rotatable vertically. The closing plate 11 is fixed at a position where the notch 26 is covered as described below and at a position where the notch 26 is opened by rotating and retracting above the rear cover 8. That is, a bracket 13a having a hole in the rear cover 8,
13b, 16a, 16b are provided, while the closing plate 11 is provided with brackets 13c, 13d having holes, and the pin members 14a, 14b whose base ends are bent are directed outward in the left-right direction by the springs 15a, 15b. It is slidably mounted and biased. Then, as shown in FIG. 1, the closing plate 11 is
b is fixed by being inserted into the holes of the brackets 16a and 16b from the left and right directions, and the pins 14a and 14b are fixed to the brackets 13 with the notch 26 closed as shown in FIG.
It is fixed by being fitted into the holes of c, 13a, 13d and 13b from left and right.

Reference numeral 18 denotes a ridger, which is a blade plate 19, an elliptically dividing plate 20 having an enlarged rear portion, and a rear portion of a rear portion which is provided at both rear ends thereof with a fastening bolt 21 and a telescopic rod 22. A support column 25, which is composed of a cultivating plate 23 whose width can be adjusted and enlarged, is provided on the blade plate 19 so as to be adjustable in the front-rear angle by an adjustment handle, is attached to the toolbar 6 so as to be vertically adjustable. When the rear cover 8 is of a two-stage folding type, the notch 26 is provided in the lower cover.

When performing the normal tilling work in the above-described cultivator, the closing plate 11 is fixed in a closed position as shown in FIG. 2 without mounting the ridge 18 and the rear cover 8 and the closing plate are fixed. It is leveled while being received by 11.

In order to carry out the ridge work, as shown in FIG. 1, the closing plate 11 is turned upward to fix the notch 26 at the open position, and the ridge 18 is moved from the rear. It is inserted below the notch 26 and attached to the toolbar 6. In this state, the soil separating plate 20 of the ridger 18 can be mounted sufficiently close to the rotation locus of the tilling claw 3, and the soil scraped up by the tilling nail 3 falls on the soil separating plate 20. It flows down while being divided into right and left, and is further flattened by the plate surface of the horizontal dividing plate 20 and pushed up by the cultivation plates 23, 23 to build up the tops of the soil that is raised on both sides.

As described above, in the embodiment in which the present invention is implemented, the closing plate 11 located at each of the above positions is provided with the closing plate 1.
The pin members 14a, 14b attached to the brackets 13c, 13d on one side are fixedly supported by being fitted into corresponding holes of the brackets 13a, 13b, 16a, 16b provided on the rear cover 8 side from the left and right directions. As a result, the pin members 14a and 14b can be prevented from being lost due to being always attached to the closing plate 11 side, and can be prevented from being lost.
a, 14b is released by the pin members 14a, 14b.
This can be easily achieved by moving b to the left and right against the springs 15a and 15b. Moreover, the pin members 14a, 14b
Is not the front-back direction in which the opening and closing plate 11 receives the pressure from the plowed soil, but the left-right direction.
Even with a simple configuration in which the holes 4a and 14b are fitted into the holes, the rear cover 8 of the closing plate 11 by the pin members 14a and 14b can be used.
The support to the skin is so strong that it does not come off accidentally.

[0011]

[Effects] In summary, since the present invention is constructed as described above, the opening / closing plate is rotated and retracted to a position covering the notch portion of the rear cover and above the rear cover to open the notch portion and to set the ridge. While being able to rotate and switch to a position where it can be mounted, the closing plate located at each of the above positions has a pin member mounted on the bracket on the side of the closing plate and a hole in the bracket provided on the rear cover side correspondingly. It is supported by fitting into the left and right directions. As a result, the pin member
It can be prevented from being lost because it is always attached to the closing plate side.In addition, the operation of releasing the pin member into the bracket on the rear cover side is easy by moving the pin member left and right against the spring. In addition, since the direction of movement of the pin member is not the front-rear direction but the left-right direction in which the opening and closing plate receives pressure from the plowed soil, a simple configuration in which the pin member is simply inserted into the hole can be achieved by the pin member. The support of the closing plate to the rear cover is so strong that it does not come off accidentally.

[Brief description of the drawings]

FIG. 1 is a rear view in which a notch is formed in a rear cover.

FIG. 2 is a rear view in which a rear cover is closed by a closing plate.

FIG. 3 is a view as viewed in the direction of arrows AA in FIG. 1;

FIG. 4 is a view taken in the direction of arrows AA in FIG. 2;

FIG. 5 is a plan view of an example in which a flat plate is attached to a cutout portion of a rear cover.

FIG. 6 is an enlarged view of a main part of FIG. 1;

FIG. 7 is an enlarged view of a main part of FIG. 2;

FIG. 8 is a side view showing a ridged state.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rotary tillage device 8 Rear cover 11 Closing plate 14a Pin member 14b Pin member 16a Bracket 16b Bracket 18 Ridge 26 Notch

Claims (1)

(57) [Scope of request for utility model registration] An upper portion of a rotary tilling portion is covered with a rotary cover, a rear cover (8) is attached to a rear portion of the rotary cover, and a notch portion is provided at a middle portion of the rear cover for interposing a ridge stand. In a rotary cultivator adapted to be fitted with a ridger mounted on a ridge, a closing plate (11) for covering a notch (26) of the rear cover is provided, and one end of the closing plate is placed above the notch of the rear cover. When closing the closing plate, the closing plate is fixed at a position where the notch is covered and a position where the notch is opened by rotating and retracting above the rear cover. Brackets (13c, 13d) are provided on both left and right ends of the other end of the plate, and springs (15c) are attached to the brackets (13c, 13d).
a, 15b), the pin members (14a, 14b) which are urged outward in the left-right direction are attached, while the rear cover is provided with a pin when the closing plate is located at a position covering the cutout portion and at an open position. Brackets (13a, 13a) which are formed at holes corresponding to the members and in which the pin members are fitted.
b, 16a, 16b) provided on the rear cover of the rotary cultivator.