E - Fixed Constructions – 21 – D
Patent
E - Fixed Constructions
21
D
61/46
E21D 21/00 (2006.01) E21D 20/00 (2006.01) F16B 13/14 (2006.01) F16B 19/00 (2006.01) F16G 11/00 (2006.01)
Patent
CA 1196201
A METHOD AND MECHANISM FOR PRELIMINARY ANCHORING OF A WIRE ROPE BOLT ABSTRACT OF THE DISCLOSURE 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.
433700
Hamalainen Risto J.
Koistinen Pauli A.t.
Fetherstonhaugh & Co.
Oy Tampella Ab
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