JP2793998B2 - Tillage claw mounting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting base for a tilling claw mounted on a holder fixed to a tilling shaft via a pin. The present invention relates to a tilling claw mounting device which is fixed by contacting with an elastic body when turned.

[0002]

2. Description of the Related Art Conventionally, when a tilling nail is attached to a holder fixed to a tilling shaft, a mounting base of the tilling nail is inserted into the holder, and a bolt is inserted into a bolt insertion hole drilled in the holder and the mounting base of the tilling nail. It was inserted and tightened with nuts. However, tilling nails are used in the soil,
When the bolts and nuts are worn or cut, they will need to be replaced.However, if the bolts and nuts are rusted or firmly tightened, the removal is troublesome, requiring a lot of time and effort. . In order to solve such a problem, the mounting base of the tilling claw is inserted into a holder fixed to the tilling shaft, and the pin insertion hole formed in the mounting base of the holder and the tilling claw is
Various devices have been proposed which are used by inserting a pin to prevent a mounting base of a tilling claw from coming off.

[0003]

When the pin is inserted into the holder to prevent the mounting base of the tilling claw from being removed and used as in the above prior art, the tilling is performed in a state where the mounting base of the tilling claw is not fixed to the holder. I will do the work,
There is a problem that the mounting base always rattles in the holder, and the tilling claw and the holder are damaged earlier. The present invention has been made to solve the above problems.

[0004]

In order to achieve the above object, the present invention provides: The mounting base of the tilling nail is inserted into the holder 3 fixed to the tilling shaft 2, and the pin is inserted into the pin insertion hole formed in the holder 3 and the mounting base of the tilling nail to prevent the mounting base of the tilling nail from coming off. An elastic body which is located on the side of the mounting base of the tilling claw in the holder 3 and elastically contacts and presses and fixes the side surface when the mounting base of the tilling claw rotates back and forth around the pin. In the tilling claw mounting device provided, the elastic body 7
A configuration in which the cross-sectional shape of the mounting base 5 of the tilling claw is in contact with two opposing locations 7a, 7a of a rectangular surface. The cross-sectional shape of the mounting base 9 of the tilling nail is made thinner at the center portion in the width direction and thicker at both ends, and the elastic body 10 is made to protrude toward the mounting base portion 9 of the tilling nail at the center portion in the width direction. 9 is configured to be in contact with two opposing locations 10a, 10a.

[0005]

According to the above means, the tilling claw mounting device of the present invention performs the following operations. . Since the elastic body 7 is configured to be in contact with two opposing portions 7a, 7a of the surface where the cross-sectional shape of the mounting base 5 of the tilling claw is rectangular, the mounting base 5 of the tilling claw does not rattle in the holder 3. The impact load applied to the tilling nail is absorbed by the elastic body 7. In addition to new tilling claws, existing tilling claws can be used without tightening with bolts and nuts. . The cross-sectional shape of the mounting base 9 of the tilling nail is made thinner at the center portion in the width direction and thicker at both ends, and the elastic body 10 is made to protrude toward the mounting base portion 9 of the tilling nail at the center portion in the width direction. Since the mounting base 9 is configured to be in contact with the two opposite locations 10a, 10a, the mounting base 9 contacts the elastic body 10 over a wide area when the mounting base 9 rotates, thereby securely fixing the mounting base 9.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be specifically described below with reference to the accompanying drawings. 1 and FIG.
Is a tilling claw mounting device, and this tilling claw mounting device 1 is the same as a conventionally well-known device in which a holder 3 is fixed to a tilling shaft 2. The holder 3 has a slightly larger width than that of the conventional one, and a mounting base 5 of a tilling claw having a rectangular cross section is inserted into the space 4 with a predetermined gap from the inner surface of the holder 3. , Holder 3 and tiller mounting base 5
A pin (not shown) is inserted through a pin insertion hole 6 formed in the tilling claw to prevent the mounting base 5 of the tilling nail from coming off.

When the mounting base 5 of the cultivating claw is positioned on the side of the mounting base 5 of the cultivating claw in the holder 3 and pivots back and forth around the pin insertion hole 6 due to the cultivation resistance of the cultivating claw,
A spring plate 7 is provided for elastically contacting and pressing and fixing the side surface. The spring plate 7 has a size substantially equal to the width and the length of the space 4 of the holder, and as shown in FIG. It bulges out so as to be in contact with the inner surface. This spring plate 7 is also provided with the same pin insertion hole 6 as the holder 3 and the mounting base 5 for the tilling nail.

In the tilling claw mounting device of one embodiment configured as described above, the tilling claw mounting base 5 is inserted straight into the holder space 4 as shown by the imaginary line in FIG. The plate 7 is inserted along the mounting base 5 of the tilling nail, and the pin is inserted into the pin insertion hole 6 to prevent the pin from coming off.
This pin has a structure that prevents the pin from coming out of the pin insertion hole 6 and allows easy insertion and removal. Then, when the tilling shaft 2 rotates in the direction of the arrow to perform tilling work with the tilling claw, the tilling resistance causes the mounting base 5 of the tilling claw to move into the pin insertion hole 6.
, And is locked at a position where it contacts the inner surface of the holder 3 as shown by the solid line in FIG.

At this time, as shown in FIGS. 3 and 4, the spring plate 7 elastically contacts the side surface of the mounting base 5 of the tilling claw at the elastic contact surfaces 7a, 7a.
Is fixed in the holder 3, and the tilling operation is continued in this state. When removing the tilling nail from the holder 3, the tilling nail is straightened as shown by the imaginary line in FIG. 1 by hitting the tilling nail with a hammer-like object, and the pin is pulled out from the pin insertion hole 6. It can be removed from the holder 3 and replaced with a new tiller.

As described above, when the mounting base 5 of the tilling claw rotates back and forth about the pin, the side surface thereof is pressed and fixed by contacting the spring plate 7. The mounting base 5 of the claw does not rattle. Therefore,
The tillage claw can be fixed to the holder 3 without using a conventional bolt and nut. Further, the impact load applied to the tilling nail during the tilling operation is absorbed by the spring plate 7,
Cutting of the tilling nail is prevented. Further, since a tilling claw having a rectangular cross-sectional shape of the mounting base 5 can be used, the existing tilling claw can be used without being tightened with bolts and nuts. Also, regardless of whether the tilling shaft 2 rotates in the forward or reverse direction, the mounting base 5 rotates back and forth around the pin, and the side surface thereof is pressed and fixed by contacting the spring plate 7.
It is suitable to use forward and reverse rotation tilling claws.

In another embodiment of the present invention shown in FIGS. 5 to 7, the mounting base 9 has a cross-sectional shape that is thin at the center in the width direction and thick at both ends as shown in FIG. In the length direction, the width of the pin insertion hole 6a is the widest, and the width on both sides thereof is gradually reduced. Further, the spring plate 10 is shaped so that the central portion in the width direction protrudes toward the concave side of the mounting base 9.

In the tilling claw mounting device of the second embodiment, the tilling claw mounting base 9 is inserted straight into the holder space 4 as shown by the imaginary line in FIG. 6, and the spring plate 10 is tilled. The pin is inserted along the mounting base 9 of the claw, and the pin is inserted into the pin insertion hole 6a to prevent the pin from coming off. Then, when the tilling shaft 2 rotates in the direction of the arrow to perform tilling with the tilling claw, the tilling resistance causes the mounting base 9 of the tilling claw to rotate α degrees around the pin insertion hole 6a, and the solid line in FIG. As shown, the inner surface of the holder 3 is brought into surface contact with the contact surfaces 3a, 3a and locked.

At this time, as shown in FIGS. 6 and 7, the spring plate 10 elastically contacts the side surface of the mounting base 9 of the tilling claw at the elastic contact surfaces 10a, 10a, and is fixed in the holder 3. Tilling work is continued in this state. Further, since the mounting base 9 is in wide contact with the inner surface of the holder 3 at the contact surfaces 3a, 3a, the mounting base 9 and the holder 3 are not damaged. Further, when removing the tilling claw from the holder 3, the tilling claw is hit with a hammer to return the mounting base 5 straight as shown by the imaginary line in FIG. 6, and the pin is removed from the pin insertion hole 6a. The tine can be removed from the holder 3 and replaced with a new tine.

[0014]

As described above, according to the tilling claw mounting device of the present invention, the following effects can be obtained. . Since the elastic body 7 is configured to be in contact with two opposing portions 7a, 7a of the surface where the cross-sectional shape of the mounting base 5 of the tilling claw is rectangular, the mounting base 5 of the tilling claw does not rattle in the holder 3. The impact load applied to the tilling claw is absorbed by the buffering action of the elastic body 7 and does not damage the tilling claw and the holder 3. Further, it is possible to easily replace the tilling nail, and it is suitable to use the forward and reverse rotating nail. Furthermore, existing tilling nails as well as new tilling nails can be used without tightening with bolts and nuts. . The cross-sectional shape of the mounting base 9 of the tilling nail is made thinner at the center portion in the width direction and thicker at both ends, and the elastic body 10 is made to protrude toward the mounting base portion 9 of the tilling nail at the center portion in the width direction. 9 is in contact with the two opposing locations 10a, 10a, so that when the mounting base 9 of the tilling claw is rotated, it comes into contact with the elastic body 10 over a wide area to securely fix the mounting base 9 of the tilling claw. Can be done.

[Brief description of the drawings]

FIG. 1 shows a tilling claw mounting device according to the present invention,
FIG. 4 is a cross-sectional view taken along a line A.

FIG. 2 is an end view of a holder.

FIG. 3 is an operation explanatory view of a tilling claw mounting device.

FIG. 4 is an explanatory diagram of an operation of a tilling claw and a spring plate.

FIG. 5 is a sectional view of a mounting base of a tilling nail according to another embodiment of the present invention.

FIG. 6 is a cross-sectional view of the tilling claw mounting device according to another embodiment of the present invention, taken along the line BB of FIG. 7;

FIG. 7 is an end view of a holder according to another embodiment of the present invention.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 cultivator claw mounting device 2 cultivator shaft 3 holder 3 a Contact surface with cultivator claw mounting base 4 Space for holder 5.9 cultivator claw mounting base 6, 6 a Pin insertion hole 7, 10 spring plate 7 a, 10 a cultivator claw Elastic contact surface with mounting base

Claims (2)

(57) [Claims] 1. A fitted a mounting base of the tilling claws to the holder (3) which is fixed to the tilling shaft (2), the pin insertion hole formed in the mounting base of the holder (3) and tilling claws, the pins insertion and then retained the mounting base of the tilling claws, the holder (3)
Of the tilling claw located on the side of the base
When the attachment base rotates back and forth around the pin, its side
And the elastic contact cultivating claws mounted device provided with a resilient member for pressing fixing elastic body (7), two places where the sectional shape of opposed surfaces forming the rectangular mounting base of tilling claws (5) (7a, 7a)
A tilling claw mounting device, characterized in that the tilling claw is mounted. 2. A method sectional shape of the mounting base of tillage 耘爪 (9), the shapes width direction central portion at both ends becomes thicker thin,
The elastic body (10) has a widthwise center portion protruding toward the mounting base (9) of the tilling claw, and a pair of the mounting base (9) of the tilling claw.
The tilling claw mounting device according to claim 1, wherein the tilling claw mounting device is configured to be in contact with two opposite locations (10a, 10a) .