JPS61157005U - - Google Patents

Description

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a longitudinal cross-sectional view of the main part, Fig. 2 is a cross-sectional side view, Fig. 3 is a partially cross-sectional rear view, and Fig. 4 is a perspective view of the elevating coupling body. It is a diagram. 1...Auto hitch device, 2...Tractor body, 3
...Connecting portion, 15...Outer cylinder, 16...Inner cylinder, 17...Horizontal shaft, 18...Arm, 20...Hook, 29...Lock mechanism, 31...Protrusion mechanism, 32...Posture restoring mechanism, 33
...Cam plate, 35...Lift arm, A...Connection posture,
B...Protruding posture.

Claims (1)

[Scope of utility model registration request] An arm 18 has a hook 20 at its lower part that can be engaged with a connecting part 3 of a towed vehicle, and the upper part of this arm 18 is supported swingably around a horizontal axis 17 and is supported by a lift arm 35 of a hydraulic device 4. An inner cylinder 16 that can be raised and lowered, an outer cylinder 15 that is fixed to the rear part of the tractor body 2 and that guides the inner cylinder 16 that can be raised and lowered, and an arm that is provided between the outer cylinder 15 and the lower part of the arm 18. A releasable lock mechanism 29 is provided between the arm 18 and the inner cylinder 16 to prevent the lowering of the inner cylinder 16 and the outer cylinder 1.
When the arm 18 is lowered downward from the lower end of the
A protrusion mechanism 31 is provided for bending the arm 18 so as to protrude rearward with respect to the inner cylinder 16 , and between the arm 18 and the outer cylinder 15 , the rearwardly protruding arm 18 is bent so as to protrude backward from the inner cylinder 16 . An auto hitch device for a tractor, characterized in that a posture restoring mechanism 32 is provided which causes a lock mechanism 29 to move back to an operable position as the tractor ascends.