JPH0139122Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a mounting device for mounting a working machine on a tractor, and more particularly to a mounting device that allows adjustment of the right and left relative positions of the working machine with respect to the tractor.

A connecting rod is inserted into and supported by the lower link of the three-point linkage device installed at the rear of the tractor, and the connecting rod is
BACKGROUND OF THE INVENTION Work machine coupling means for coupling work machine coupling devices are well known. In this case, the right and left relative positions of the working machine with respect to the tractor were constant, and the center lines of the tractor and the working machine in the left-right width direction coincided. Therefore, in order to adjust the amount of offset of the work equipment with respect to the tractor, it is necessary to use a hydraulic device or the like in the work equipment itself to move the working part left and right, or to adjust the working part to the left and right by connecting it to a three-point linkage. Although some improvements have been made, such as making them possible, these have had problems such as complex structures, high costs, and increased weight.

In view of the above-mentioned circumstances, the present invention aims to provide a working machine mounting device that has a simple configuration and is capable of adjusting the right and left relative positions of the working machine with respect to the tractor.

For this purpose, the present invention inserts and supports a connecting rod through the lower link of a three-point link device installed at the rear of the tractor, and connects connecting devices installed at predetermined intervals at the front of the work machine to this connecting rod. In the connecting rod, collars of different lengths are removably provided at both left and right ends of the connecting rod, and the connecting device of the working machine is connected to the collars, and both collars are replaced. This feature makes it possible to adjust the right and left relative positions of the working machine with respect to the tractor.

Hereinafter, the present invention will be explained with reference to the illustrated embodiments.

In FIG. 1, reference numeral 1 denotes a tractor, and a three-point link device consisting of a pair of left and right lower links 2 and a top link 3 is provided at the rear of the tractor, and a rotary tilling device 4 is attached to this three-point link device. It's becoming like that. The rotary tilling device 4 has a pair of lower link connecting portions 5, 5 protruding at a predetermined interval from the front thereof, and the lower link connecting portions 5, 5 are inserted into and supported by the lower links 2, 2. Rod 6
At the same time, the top link 3 is connected to the top mast 7, and power is received from the tractor 1 via a power transmission device (not shown) to drive the tilling section 8 to perform tilling work.

As shown in FIG. 2, an engagement hole 9 and a rotating hook 10 are provided at the tip of the lower link connecting portion 5, and the connecting rod 6 can be opened with the rotating hook 10 in an upright position. The connecting rod 6 and lower link connecting portion 5 are guided into the engaging hole 9 and rotated by rotating the rotating hook 10.
I am trying to connect them. The connecting rod 6 has a large diameter portion 11 in the middle portion in the length direction, and the large diameter portion 1
The lengths of the connecting rods 6 on both the left and right sides of 1 are different, and connecting collars 12 and 14 of different lengths are removably prepared at both ends of the different lengths. are each provided with a guide collar 13. As shown in FIGS. 3 and 4, the connecting collars 12 and 14 are connected to the lower link connecting portion of the working machine 4 with respect to the left-right distance of the lower link 2 by replacing the connecting rod 6 and replacing the retaining pin 15. By changing the connection position of 5, 5, the relative left and right position of the working machine 4 with respect to the tractor 1 can be adjusted.

Since the work equipment mounting device of the present invention is constructed as described above, for example, as shown in FIG. Position it on the side and insert it through.
A retaining pin 15 is inserted into the outside of the lower link 2, and the lower link 2 is positioned near the thick diameter portion 11 at the right end of the connecting rod 6, and the connecting collar 1 is placed outside of the lower link 2.
4, and insert the retaining pin 15 on the outside thereof. By connecting the lower link connecting parts 5, 5 of the working machine 4 to the connecting collars 12, 14, respectively, in this way, the working machine The left and right center of 4 has shifted to the right, and the work implement 4 performs the tilling work while being offset to the right with respect to the tractor 1.

Further, as shown in FIG. 4, the retaining pins 15 and 15 are each removed from the state shown in FIG. When the connecting collar 12 is positioned at the top and the working machine 4 is connected, the horizontal center of the tractor 1 and the horizontal center of the working machine 4 are aligned and centered, and the working machine 4 is centered.
performs plowing work without being offset to the left or right with respect to the tractor 1.

Although the above embodiment shows a case in which the work implement 4 is offset to the right, it is also easy to configure the work implement 4 to be offset to the left. It may be formed into any color shape.

As explained above, according to the work machine mounting device of the present invention, the connecting rod 6 supported by the lower links 2, 2
Connecting collars 12, 1 of different lengths from both left and right sides of
4 is made removable, the right and left relative positions of the work implement 4 with respect to the tractor 1 can be adjusted by replacing both collars 12 and 14, and center set,
The offset position can be simply and easily selected, and since the only operation required is to replace the retaining pin and the connecting collar, the switching operation can be performed in a short time, and the configuration is simple, light in weight, and can be provided at low cost.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a rotary tilling device showing one embodiment of the present invention, Fig. 2 is a partial perspective view of a connecting part, Fig. 3 is a partially cutaway plan view at the time of offset, Fig. 4
The figure is a partially cutaway plan view when the center is set. DESCRIPTION OF SYMBOLS 1... Tractor, 2... Lower link, 3... Top link, 4... Rotary tilling device, 5... Lower link connection part, 6... Connecting rod, 7... Top mast, 8... Tilling part, 9... Engagement hole, 10... times Dynamic hook, 11...large diameter part, 12, 14... connecting collar, 13... guide collar,
15...Keeping pin.

Claims (1)

[Scope of utility model registration request] A connecting rod is inserted into and supported by the lower link of the three-point linkage device installed at the rear of the tractor, and the connecting rod is
In a device configured to connect connecting devices provided at a predetermined interval on the front part of the work machine, the connecting rod:
Collars of different lengths are removably provided at both left and right ends, and the coupling device of the work equipment is connected to these collars, and by replacing both collars, the relative left and right position of the work equipment with respect to the tractor can be adjusted. A work machine mounting device characterized by being adjustable.