JPS646002Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a work equipment attachment device for attaching a work equipment such as a leveling plate or a ridge raiser to the rear of a tiller or tractor.

Conventionally, working machines have been configured to be detachable from a tractor or the like, and when the working machine is not in use, for example, when moving around a field, the working machine is removed. Conventional work equipment is generally attached by inserting a connecting pin into a work equipment mounting member at the rear of a tractor and a connected portion on the work equipment side. However, when installing the work equipment using this connecting pin, the pin insertion holes on the tractor side and the work equipment side must be aligned and the connecting pin inserted, which is not only difficult for one person to do. , this work was extremely troublesome.

Therefore, an object of this invention is to improve work efficiency by providing a work equipment mounting device that allows the work equipment to be easily raised when the work equipment is not in use.

That is, the work equipment mounting device A according to this invention is as follows:
A pair of left and right brackets 2 and 2' are provided at the rear of the machine body connecting portion 1, and a work equipment support arm 3 is rotatably provided on the brackets 2 and 2'. The locking pin 4 is inserted in a direction perpendicular to the locking pin 4, and the locking hole 5 of the locking pin 4 is provided at the rear of the connecting portion 1, and the positional relationship of the locking hole 5 of the locking pin 4 is adjusted at least to the support arm. 3 is rotated so that the working machine 6 is placed in a working position and a non-working position.

This invention will be described in detail below based on embodiments shown in the accompanying drawings.

A body connecting portion 1 of a working machine 6 is detachably installed on a working machine 6 mounting rod 7 at the rear of a tractor B. Left and right brackets 2, 2' are fixed to the rear of the body connecting portion 1. This bracket 2, 2' has
A work equipment support arm 3 is attached in the width direction of the tractor B, and this support arm 3 is attached to the bracket 2,
2', it is rotatably attached. A locking pin 4 is inserted through the support arm 3 in a direction perpendicular to the rotation axis of the support arm 3. A locking plate 8 having a locking hole 5 that engages with the tip of the locking pin 4 is fixed to the rear surface of the body connecting portion 1 . The locking plate 8 has a C-shaped cross section, and locking holes 5, 5' are formed at both ends. A spring 9 is interposed behind the locking pin 4, and the locking pin 4 is biased toward the locking plate 8. The support arm 3 is provided with a spring holder 10, and the locking pin 4 is attached to the spring holder 10.
stands out from An operating handle 11 is provided at the rear end of the locking pin 4 protruding from the spring receiver 10.
is installed. The operating handle 11 is rotatably attached to the locking pin 4, and its rotation shaft 12 is provided in a direction perpendicular to the length direction of the locking pin 4.

A connecting member 13 is fixed to the support arm 3, and a leveling plate 17 is supported on the connecting member 13 by a connecting rod 14 and a pressing rod 16 having a compression spring 15 interposed therebetween.

The positional relationship between the locking pin 4 and the locking hole 5 is as follows.
As shown in the figure, when the locking pin 4 is engaged with the upper locking hole 5, the leveling plate 17 is in the working position shown in FIG. From this state, raise the operating handle 11 (see Fig. 2), remove the locking pin 4 from the upper locking hole 5, rotate the support arm 3 by the locking pin 4, and then 4 is engaged with the lower locking hole 5' as shown in FIG. 3, the leveling plate 17 is fixed in the upper position, which is the non-working position.

As described above, according to this invention, the locking pin 4
By changing the engagement position of the locking hole 5 and rotating the support arm 3, the work machine can be easily changed from the working position to the non-working position. It saves you the trouble of removing it each time.
This has the effect of greatly improving the efficiency of agricultural work.

[Brief explanation of the drawing]

Fig. 1 is a diagram showing the operating state of the work equipment mounting device according to the invention, Fig. 2 is a partially sectional side view of the work equipment mounting device, Fig. 3 is a partially sectional side view of the same, and Fig. 4 is a FIG. A... Work equipment attachment device, 1... Machine connection part,
2, 2'...Bracket, 3...Support arm, 4
...Lock pin, 5, 5'...Latch hole.

Claims (1)

[Scope of utility model registration request] A pair of left and right brackets is provided at the rear of the machine body connection part, a work equipment support arm is rotatably provided on the bracket, and a locking pin is inserted into the support arm in a direction perpendicular to the rotation axis of the support arm. A locking hole for this locking pin is provided at the rear of the connecting portion, and the positional relationship between the locking pin and the locking hole is set such that at least when the support arm is rotated, the work machine is in a working position and a non-working position. A work equipment mounting device characterized by: