| 摘要 |
PROBLEM TO BE SOLVED: To provide a working-machine attachment mounting-demounting device, in which either or several of the facilitation of the insertion alignment of a pin are attained regardless of simple structure, a low cost, high durability, automatic retaining and the size of a working- machine attachment. SOLUTION: The working-machine attachment mounting-demounting device has the first member 1 being freely rotated around the first lateral pin P1 at the front end of a working- machine arm 3 by a hydraulic cylinder 4 and the second member 2 hung down from the second lateral pin P2 at the front end of the first member 1, and the second member 2 has recessed sections as front-rear inclined planes 2FF, 2BB expanded and opened towards front ends and a hook, in which an approximately center is connected by the fifth lateral pin and the hook is formed in an approximately L shape in an upper section and a lower section from the fifth lateral pin for freely retaining the third lateral pin P3 in the vicinity of the base end of the first member 1 to the third and fourth lateral pins P3, P4 of a working- machine attachment 5 and the fourth lateral pin P4 at the front end of the second member 2. The upper section is formed in a weight section with the second lateral hole for inserting a stop pin, the lower section is formed in a hook body opened to both recessed section sides, and the underside of the weight section is protruded into both recessed sections in case of balancing in the periphery of the fifth lateral pin by hook its own weight in the approximately L shape, and the hook body is opened to both recessed section sides while both recessed sections are opened completely. |
