JPS6437557U - - Google Patents

Description

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and each of FIGS. 1 and 2 is a side view of the tractor and work equipment showing different operating states, FIG. 3 is a rear view of the tractor, and FIG. 4 is a hydraulic The circuit diagram, each figure in Figures 5 to 7 is a side view of the main part showing different operating states, each figure in Figures 8 and 9 is a line AA and BB line in Figure 7, respectively. 10 is a vertical sectional view showing the guide pin and the guide tube, each of FIGS. 11 and 12 is a vertical sectional view of both the tractor-side and loader-side joints showing different operating states, Figure 13 is a side view of the swing arm, etc.
Figure 14 is a sectional view taken along the line C--C in Figure 13.
5 is a view taken along arrow D in FIG. 13, FIG. 16 is a sectional view taken along the line E--E in FIG. 15, and FIG. 17 is a partially sectional side view of the interlocking member and the like. DESCRIPTION OF SYMBOLS 1...Tractor, 2...Tractor body, 3...Lift arm, 4...Hydraulic system for lifting and lowering work equipment, 10...Connection link, 23...Loader (work equipment), 24...Mounting member, 32...Lift cylinder (hydraulic cylinder), 5
1...Joint, 53, 54...Tractor side/loader side (
Work machine side) joint part, 56, 86...tractor side/loader side (work machine side) holding body, 111...engaging body, 1
13...Cam body, 114...Spindle, 120...Locking part,
125, 127...Cam part for connection/release, 130
, 131...Hydraulic cylinder type/rod type connection body, 1
33...Interlocking member.

Claims (1)

[Claims for Utility Model Registration] A pair of left and right connecting links 10 are pivotally supported at the lower part of one end in the longitudinal direction of the tractor body 2 so as to be able to rise and fall freely, and a pair of left and right lift arms are mounted on the one end of the vehicle body 2. 3, both lift arms 3 and both connecting links 10 are provided with a hydraulic device 4 having a
The working machine 23 is connected by connecting bodies 130 and 131 and is attached to one end of the tractor 1 in the longitudinal direction. The attachment member 24 is attached to the vehicle body 2, and the attachment member 24 is freely repositionable between an attachment position and a removal position with respect to the vehicle body 2. Hydraulic cylinder 32
When the working machine 23 is attached to the tractor 1, the hydraulic device 4 raises both the connecting links 10 from the removal position to the attachment position, so that the attachment member 24 in the attachment position has both the connecting links 10. When the work equipment 23 is attached to and removed from the tractor 1, the tractor-side joint part 53 and the work equipment-side joint part 54 are brought into contact with each other from below in the hydraulic oil supply system from the tractor 1 to the work equipment 23.
are attached and detached, and both joint parts 53 and 54 constitute a self-sealing type joint 51, in which the connecting body 130 on one side is a hydraulic cylinder type consisting of a hydraulic cylinder, and this hydraulic cylinder type connecting body 130 has an operating range in which the connecting link 10 on one side is raised and lowered in a region below the removal position; is provided on the work machine side holder 86, the work machine side holder 86 is provided on the work machine side so as to be movable in the front and back direction, the work machine side holder 86 is provided with an engaging body 111, and the tractor side holder 56 is provided with an engaging body 111. A cam body 113 is provided rotatably around a support shaft 114 in the left and right direction, and is provided between the hydraulic cylinder type coupling body 130 and the cam body 113, so that when the working machine 23 is attached to or detached from the tractor 1, the above-mentioned movement of the hydraulic cylinder type coupling body 130 is provided. An interlocking member 133 that rotates the cam body 113 by expanding and contracting in the operating range.
The cam body 113 locks the interlocking member 133 when the hydraulic cylinder type connecting body 130 expands and contracts in the above operating range, and the interlocking member 133 locks when the connecting link 10 moves up and down between the removal position and the installation position. The locking portion 120 is released; When the working machine 23 is attached to the tractor 1, the engagement body 111 is rotated by the rotation of the cam body 113 due to the contraction of the hydraulic cylinder type coupling body 130 in the above operating range.
a connecting cam portion 125 that connects both the joint portions 53 and 54 on the tractor side and the work machine side by engaging with the work machine side holding body 86 and bringing the work machine side holding body 86 closer to the tractor side holding body 56; When the engaging body 111 is removed from the tractor 1, the engaging body 111
a release cam part 127 that engages with the cam part 127 to move the work machine side holding body 86 backward from the tractor side holding body 56 to release the connection between the joint parts 53 and 54 on the tractor side and the work machine side; A coupling device in a hydraulic oil supply system to a working machine, characterized in that the coupling device comprises: