Quick-change system

Details Quick-change system Quick-change system

1991-03-25

1992-06-30

Spar, Robert J.

Material or article handling

Vertically swinging load support

Shovel or fork type

92 28, E02F 328

Patent

active

051257882

ABSTRACT:
A quick-change arrangement for an excavator is provided for the exchange of tools which are detachably fastened by way of locking elements to an adapter of a bending arm and held on the bending arm so that the tool can be swivelled around a horizontal axis. The locking elements comprise a piston, which is coaxially arranged in a housing and has end-side locking pins which, by way of an interposed pressure spring, can be adjusted into a moved-out operative position and, by way of a pressure admission controlled by the control unit, can be adjusted into a moved-in inoperative position inside the adapter. By this construction of the device, it is achieved that the locking pins are subjected to the tension of the pressure spring in the operative position.

REFERENCES:
patent: 2267644 (1941-12-01), Ernst et al.
patent: 3033171 (1962-05-01), Engelbrecht et al.
patent: 4373852 (1983-02-01), Maurer
patent: 4674945 (1987-06-01), Hulden
Two-page European Search Report, EP 90122462, Jun., 1991.

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