JPH06153607A - Device for connecting tillage working vehicle to tillage working section - Google Patents

Abstract

PURPOSE:To provide the connecting device of a tillage working section to a tillage working vehicle capable of performing good tillage works. CONSTITUTION:The connecting device is produced by connecting a tillage working vehicle 21 such as a tractor to a tillage working section 22 pulled with the working vehicle 21 and used for performing various tilling works, and a connecting member 24 provided with a buffer spring 23 for the connecting member between the tillage working vehicle 21 and the tillage working section 22 is adopted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connecting device for connecting an agricultural work vehicle such as a tractor and an agricultural work section such as a scraping rotor.

[0002]

2. Description of the Related Art Conventionally, a connecting structure for connecting an agricultural working vehicle 1 such as a tractor and various agricultural working parts 2 such as a scraping rotor is shown in FIGS. It is composed of two left and right connecting rod bodies 3 and 4 and a central connecting rod body 5. 1 is an explanatory plan view and FIG. 2 is an explanatory front view.

In such a conventional example, since each pivot portion 6 exists, the scraping rotor can adapt to vertical movement due to unevenness of the ground to some extent, but it is still insufficient.

Therefore, recently, the agricultural work unit 2 does not move up and down even when the agricultural work vehicle 1 moves up and down, and the agricultural work unit 2 tilts even when the agricultural work vehicle 1 tilts left and right. There is also proposed a mechanism which automatically controls the behavior of the agricultural working part 2 by a microcomputer so that the agricultural working part 2 is always kept in a horizontal state. However, in such a structure,
High cost and complicated mechanism make maintenance difficult.

It is an object of the present invention to provide a connecting device between an agricultural work vehicle and an agricultural work section, which solves the above problems by adopting a very simple structure.

[0006]

The gist of the present invention will be described with reference to the accompanying drawings.

Agricultural work vehicle 21 such as a tractor and the work vehicle
A work vehicle for farming, which is connected to a farming work section 22 for performing various farming works by being pulled by 21.
The present invention relates to a connecting device between an agricultural work vehicle and an agricultural working unit, which is characterized in that a connecting member 24 provided with a buffer spring 23 is used as a connecting member between the agricultural working part 22 and the agricultural working part 22.

In the structure for connecting the agricultural work vehicle and the agricultural work part according to claim 1, a spring force adjusting part 25 for adjusting the spring force of the buffer spring 23 of the connecting member 24 is provided. The present invention relates to a connecting device between a work vehicle and an agricultural work section.

[0009]

When the agricultural work vehicle 21 moves up and down or tilts left and right, this movement is buffered by the buffer spring 23, and the behavior of the agricultural work vehicle 21 does not change.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 3, 4 and 5 show one embodiment of the present invention, which is applied to a connecting portion between a tractor 21 and a scraping rotor 22.

The connecting member 24 is composed of two left and right connecting members 24 and one central connecting member 24. The connecting member 24 has the structure shown in FIGS.

As the two left and right connecting members 24, the connecting members 24 having the structure shown in FIG. 3 are used, and one central connecting member 24 is
The connecting member 24 having the structure shown in FIG. 3 and the connecting member 24 having the structure shown in FIG.

Reference numeral 43 is a moving plate and 26 is a horizontal plate.

The connecting member 24 shown in FIG. 3 is provided with a tubular body 29 having a predetermined diameter and a predetermined length, and a stopper 31 having a through hole 30 formed at the right end of the tubular body 29 is fixed thereto, and a screw hole 32 is provided at the left end. The slide body 28 having the male screw portion 27 formed at its tip is fixed to the cylindrical body 29, and the male screw portion 27 of the sliding body 28 is inserted into the through hole of the right side plug body 31. It has a structure protruding from 30.

A shock absorbing spring 23a is provided in the cylindrical body 29. The shock absorbing spring 23a is slidable on the inner surface of the right plug 31.
It is supported with 28 collars 28 '. The spring force of the cushioning spring 23a is appropriately set according to the type of the agricultural work part 22 (the buffering spring 23a is preferably set to have a spring force that suspends the weight of the agricultural work part 22).

A suspension bolt 34 is screwed into the screw hole 32 of the left plug 33, and the tip of the suspension bolt 34 has the above-mentioned sliding member.
It is inserted into the recess 28 "of 28.

Reference numeral 35 is a lock nut, and 36 is a suspension portion.

The connecting member 24 of FIG. 4 is provided with a rod body 38 having male screw portions 37 formed at both ends, and a mounting portion 40 is provided at the center of the rod body 38.
The sliding cylinder 39 provided with is fitted and the left and right male screw parts 37 of the rod 38 are
It has a structure in which nut cylinders 41 and 42 are screwed. The nut cylinder 41 is the spring force adjusting portion 25 referred to in claim 2, and the nut cylinder
The male screw portion 27 of the connecting member 24 shown in FIG.

A shock absorbing spring 23b is fitted on the rod 38 between the sliding cylinder 39 and the nut cylinders 41 and 42, and the shock absorbing spring 23b is fitted in the sliding cylinder 39 and the nut cylinders 41 and 42. It is supported by and. The spring force of the buffer spring 23b is appropriately set according to the use conditions. For example, the spring force is relaxed in a wet field and strengthened in a dry field.

Since the present embodiment has the above-described structure, the scraping rotor 22 having a weight that suspends the spring force of the buffer spring 23a is lifted by the mounting portion 40 of the central connecting member 24 and the horizontal plate 26, and the buffer spring 23a is Slightly stretched. Therefore, even if there is unevenness on the ground, the unevenness is favorably absorbed by the expansion and contraction of the buffer spring 23a. Further, in the present embodiment, the left and right connecting members 24 are provided with the buffer springs 23b, so that the spring force of the buffer springs 23b is appropriately adjusted in consideration of the soil so that the ground has a left and right inclination. However, the horizontal state can be maintained without tilting the scraping rotor 22 left and right.

Therefore, according to this embodiment, even if the tractor 21 moves up and down or tilts left and right, the scraping rotor 22 follows the tractor 21 and moves up and down and tilts left and right. The tractor 21 is restrained by 23a and 23b.
Will always maintain a proper horizontal state, and thus the better scraping work will be performed especially in wetlands. This embodiment does not employ a hydraulic mechanism that uses an uncompressed fluid, but employs a spring that is a compressed body and has a simple structure.
Therefore, the behavior of the scraping rotor 21 can be maintained appropriately and easily.

[0022]

Since the present invention is constructed as described above, it is an excellent connecting device for an agricultural work vehicle and an agricultural work section, which is capable of performing extremely excellent agricultural work.

[Brief description of drawings]

FIG. 1 is an explanatory plan view of a conventional example.

FIG. 2 is an explanatory front view of a conventional example.

FIG. 3 is a sectional view of an essential part of this embodiment.

FIG. 4 is a cross-sectional view of a main part of this embodiment.

FIG. 5 is an explanatory front view showing a usage state of the present embodiment.

[Explanation of symbols]

 21 Agricultural work vehicle 22 Agricultural work part 23 Cushion spring 24 Connecting member 25 Spring force adjusting part

Claims (2)

[Claims] 1. An agricultural work vehicle such as a tractor and an agricultural work section for performing various agricultural works by being towed by the working vehicle, which is a connection between the agricultural work vehicle and the agricultural work section. A connecting device between an agricultural work vehicle and an agricultural working unit, characterized in that a connecting member provided with a buffer spring is used for the member. 2. The apparatus for connecting an agricultural work vehicle and an agricultural working section according to claim 1, further comprising a spring force adjusting section for adjusting a spring force of a buffer spring of the connecting member. A connection device between the work vehicle and the agricultural work section.