JPH06335301A - Device for attaching tilling tine - Google Patents

Abstract

PURPOSE:To fix the attaching base part of a tilling tine to the insertion hole of a holder with a press spring, even when a tilling shaft is reversely rotated, by specifying the insertion hole of the holder for inserting the attaching base part of the tilling tine. CONSTITUTION:The device for attaching the tilling tine is characterized in that the insertion hole 3a of a holder 3 for inserting the attaching base part 4 of the tilling tine is constituted so that the pin-inserting hole 5 of the holder 3 coincides with the pin-inserting hole 5 of the attaching base part of the tilling tine and that a press spring 8 presses the side surface of the attaching base part, when the attaching base part of the tilling tine is inserted into the insertion hole 3a of the holder and subsequently rotated in a working state.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is designed such that a mounting base of a plowing pawl is fitted into a holder fixedly mounted on a plowing shaft so as to be prevented from coming off by a pin, and a rotation of the mounting base is regulated by a holding spring. The present invention relates to a plow attachment device.

[0002]

2. Description of the Related Art Conventionally, when attaching a plowing pawl to a holder fixed to a plowing shaft, a mounting base of the plowing pawl is fitted into the holder and a bolt is inserted into a bolt insertion hole formed in the mounting base of the holder and the plowing pawl. It was inserted and tightened with a nut. However, tillage nails are used in the soil,
It will be replaced when it becomes worn or cut, but if the bolts and nuts are rusted or they are tightly tightened, it will be troublesome to remove and it will take a lot of time and effort. .

In order to solve such a problem, a mounting base of a plowing pawl is fitted into a holder fixedly mounted on a tilling shaft, and a pin is inserted through a pin inserting hole formed in the holder and the mounting base. Prevents the base from slipping out, and when the mounting base is rotated to the working position in the holder, the side surface of the mounting base is pressed by the pressing spring to restrict the rotation of the mounting base, making it easy and easy to replace the plowing claw. The present applicant has proposed a tilling claw attaching device that can be realized.

[0004]

By the way, as in the above-mentioned prior art, the pins are inserted into the pin insertion holes of the holder and the mounting base to prevent the mounting base from coming off, and the mounting base is rotated to the working position in the holder. At this time, if the side surface is pressed by a presser spring to restrict the rotation of the mounting base, for example, if the cultivating shaft is reversed to level the unevenness at the start position of the cultivating work, The base is released from the pressing force of the presser spring, and the tilling claw is free. Then, when performing the tilling work by rotating the tiller shaft in the forward direction, the mounting base may not be pressed and fixed smoothly by the presser spring. There was a problem that abnormal contact wear occurred on the contact surface and the fixing function of the presser spring was lost and repair was required. The present invention is intended to solve the above problems.

[0005]

Means for Solving the Problems In order to achieve the above object, the present invention provides: (1) A holder fixed to a tilling shaft is fitted with a mounting base of a tilling pawl, and the holder and the mounting base are bored. In the tiller mounting device, the pin is inserted into the pin insertion hole to prevent the mounting base from coming off, and the side surface of the mounting base is pressed by a holding spring in the holder to restrict the rotation of the mounting base. The fitting insertion hole for fitting the mounting base portion of the tilling claw of, when the mounting base portion is fitted and rotated to the working position, the pin insertion hole of the holder and the pin insertion hole of the mounting base portion match, The presser spring is configured to press the side surface of the mounting base and insert the pin to prevent the mounting base from slipping out. (2) The fitting insertion hole of the holder is pressed at the position where the mounting base of the tiller is inserted and removed. Spring is attached to the base side Configured things so as not to be pressed,
Each is characterized by.

[0006]

By the above means, the tillage claw attaching device of the present invention performs the following actions. The insertion hole for inserting the mounting base of the tillage claw of the holder is
After inserting the mounting base and turning it to the working position,
The pin insertion hole of the holder and the pin insertion hole of the mounting base part match, and the presser spring presses the side surface of the mounting base part.
Since the pin is inserted to prevent the mounting base from coming off, the mounting base of the plowing pawl is fixed by the presser spring even when the plowing shaft is reversed, and the plowing pawl does not become free. Then, when the tilling shaft is normally rotated to perform the tilling operation next time, abnormal wear does not occur on the contact surface between the pressing spring and the mounting base. The fitting insertion hole of the holder prevents the pressing spring from pressing the side surface of the attachment base at the position where the attachment base of the tillage claw is inserted and removed, so that the tillage pawl can be easily replaced.

[0007]

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 2, reference numeral 1
Is a tilling claw attaching device, and this tilling claw attaching device 1 is the same as a conventionally known one in which a holder 3 is fixedly attached to a tilling shaft 2. The width and thickness of the holder 3 are formed to be slightly larger than those of the conventional one, and the fitting insertion hole 3 of the base for mounting the tilling claw is used.
In a, a mounting base 4 of a plowing claw having a rectangular cross section is formed.
Is inserted and removed, and is attached and detached. A pin insertion hole 5 is formed in each of the holder 3 and the mounting base 4 of the tilling claw.

Guides and guides are provided on both sides in the width direction within the fitting hole 3a of the holder 3 while slidingly guiding the mounting base 4 of the tilling claw and abutting the mounting base 4 in the fitted state. The contact members 6 and 7 are integrally provided. A holding spring (spring plate) 8 having a width substantially equal to that of the fitting insertion hole 3a and a slightly shorter length is held by a spring pin 9 and supported on one side surface in the thickness direction inside the holder 3.

In the above state, after the mounting base is fitted into the fitting hole 3a of the holder 3 at the insertion / removal position 4 and then rotated to the working position 4a, the pin insertion hole 5 of the holder 3 and the mounting base 4 are inserted. And the presser spring 8 presses and fixes the side surface of the mounting base 4, the pin 10 is inserted to prevent the mounting base 4 from slipping off, and the clip 11 locks the pin 10. I try to prevent it from slipping out. As described above, when the mounting base is fitted and inserted in the fitting hole 3a of the holder 3 at the insertion / removal position 4, the holding spring 8 does not press the side surface of the mounting base 4.

Next, the operation of the tilling claw attaching device 1 of the embodiment constructed as described above will be described. First, when mounting the tilling claw on the holder 3, as shown in FIGS. 1 and 3, the mounting base of the tilling claw is inserted into the fitting insertion hole 3 a of the holder 3 at the insertion / removal position 4. At this time, since the holding spring 8 does not press the side surface of the mounting base 4, the mounting base can be easily inserted by hand. After inserting the mounting base and hitting the outside plowing claw of the holder 3 with a hammer or the like to rotate to the working position 4a, the pin insertion hole 5 of the holder 3 and the pin insertion hole 5 of the mounting base 4 are aligned, The presser spring 8 presses and fixes the side surface of the mounting base 4. In this state, the pin 10 is inserted through both the pin insertion holes 5 to prevent the attachment base 4 from coming off, and the clip 11 is engaged to prevent the pin 10 from coming off. Then, the tilling shaft 2 is rotated in the arrow direction to perform the tilling work.

The side of the mounting base 4 of the plowing pawl is pressed and fixed by the presser spring 8 even during the plowing work or when the plowing work is stopped, and the plowing work can be continued without rattling. You can Then, even when the tilling shaft 2 is reversed to level the unevenness formed at the tilling work start position, the tilling claw has its mounting base 4 at 4b in FIG.
The side surface of the mounting base 4 is continuously pressed and fixed by the pressing spring 8 only to the moving position shown by. Therefore, the tillage claws do not become free, and the tiller shaft 2
The rotation amount of the tilling pawl is very small even when the tiller is rotated normally to restart the tilling work, and the pressing spring 8 is not worn. To remove the tillage claw, remove the clip 11 and use the pin 10
It can be removed by tapping the plowing claw with a hammer or the like to rotate it to the insertion / removal position 4 and pulling it out by hand.

[0012]

As described above, according to the tilling claw attaching device of the present invention, the following effects can be obtained. The insertion hole for inserting the mounting base of the tillage claw of the holder is
After inserting the mounting base and turning to the working state,
The pin insertion hole of the holder and the pin insertion hole of the mounting base part match, and the presser spring presses the side surface of the mounting base part.
Since the pin is inserted to prevent the mounting base from coming off, the mounting base of the plowing pawl is fixed by the presser spring not only during the plowing work but also when the plowing shaft is reversed. This prevents the contact surface between the presser spring and the mounting base from being abnormally worn when the tilling shaft is normally rotated next time to perform the tilling work.

Since the holder spring is configured so that the holding spring does not press the side surface of the mounting base at the position where the mounting base of the tilling claw is inserted and removed, it is possible to insert or remove the tilling claw into or from the holder inserting hole. It can be done easily.

[Brief description of drawings]

FIG. 1 is a side view of an apparatus for mounting a tilling claw according to the present invention.

FIG. 2 is an end view of a holder.

FIG. 3 is a cross-sectional view for explaining the operation of the apparatus for mounting the tilling claw.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Tilling pawl mounting device 2 Tilling shaft 3 Holder 3a Fitting hole for a tilling claw mounting base 4 Cultivating claw mounting base (insertion / removal position) 4a Working position of a tilling claw mounting base 4b Moving position 5 Holder and pin insertion holes on the base for mounting the tilling pawl 6,7 Guide / contact member for the base for mounting the tilling pawl 8 Holding spring (spring plate) 9 Spring pin 10 Pin 11 Clip

Claims (2)

[Claims] 1. A holder fixed to a cultivating shaft is fitted with a mounting base of a tilling claw, and a pin is inserted into a holder and a pin insertion hole formed in the mounting base to prevent the mounting base from coming off. In the tillage claw attaching device in which the side of the attachment base is pressed by a pressing spring to regulate the rotation of the attachment base, the fitting insertion hole for inserting the attachment base of the tiller of the holder is
After inserting the mounting base and turning it to the working position,
The pin insertion hole of the holder and the pin insertion hole of the mounting base part match, and the presser spring presses the side surface of the mounting base part.
A tillage claw attaching device, characterized in that the pin is inserted to prevent the attachment base from coming off. 2. The tillage claw attachment according to claim 1, wherein the fitting insertion hole of the holder is configured so that the holding spring does not press the side surface of the attachment base at a position where the attachment base of the tiller claw is inserted and removed. apparatus.