Mechanism for preliminary anchoring of a wire rope bolt

Details Mechanism for preliminary anchoring of a wire rope bolt Mechanism for preliminary anchoring of a wire rope bolt

1986-07-11

1987-10-13

Moon, Charlie T.

Metal deforming

By deflecting successively-presented portions of work during...

To form helical coil or tube

29332, 29241, B21F 304, B23P 1904

Patent

active

046989943

ABSTRACT:
The invention relates to a method and mechanism for preliminary anchoring of a wire rope bolt in a bore by means of friction. The object is to eliminate the need to use wooden wedges or to bend the strands of the rope backwards, procedures which are time-consuming. In accordance with the invention, a permanent deformation is produced in the wire rope bolt in such a way that friction force is produced when parts of the bolt press against the wall of the bore. The mechanism may comprise, fitted at a point prior to feeding rolls, a bending roll, which bends the wire rope before it is fed into the bore. The circumference of the feeding roll can be V-shaped, in which case it causes the bent wire rope to rotate and to become helical.

REFERENCES:
patent: 2690693 (1954-10-01), Campbell
patent: 2749962 (1956-06-01), Kitselman
patent: 3370622 (1968-02-01), Marks
patent: 3719982 (1973-03-01), Tindal
patent: 3874061 (1975-04-01), Gauthier
patent: 3975815 (1976-08-01), Mori
patent: 4250681 (1981-02-01), Helderman
patent: 4546631 (1985-10-01), Eisinger

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