The wire rope broken wire number, corrosion (wear) amount, and the deformation, use the length and fixed state should comply with the national standard provisions.
(1) the selection of wire rope should comply with the requirements, the connection method should be correct.
A. wire rope end the operator should set this linking piece fixed frequency 2 or with wedge block fixed in the drum etc members.
B. when hook take content device such as a minimum position (including pit), wire rope in the laps around the drum, in addition to the lap of the fixed rope outside, must have quartile 2 laps.
(2) in one of the following circumstances shall be wire rope scrap:
A. for the wire rope into a fine twined in from (refers to any a wire rope around a week of axial distance) within the broken wires of the total number of 10% of the number of wire rope.
B. hoisting hot metal or dangerous goods wire rope, its scrapping broken wires of general hoisting take half the number, such as broken wires cases at local, or in the six times as many as in the wire rope diameters broken wires of concentrated in a cold, should according to the provisions of the half a right namely scrap.
C. surface corrosion or steel wire rope wear of the surface the diameter of the silk 40%.
D. wire rope diameter reduction is 7%.
E. wire rope is obvious internal corrosion.
F. wire rope surface is wear or corrosion, and has a number of broken wire, wire break several should be in a and b superior to the provisions of the reduction after coefficient judge: when wear or corrosion rate respectively in 10%, 15%, 20%, 25%, 30%-40%, reduction coefficient corresponding 85%, 75%, 70%, 60%, 50%.
G. the whole strands of fracture or burn out.
H. local outer wire rope elongation is in a "cage" form or wire rope the diameter of fiber core increases more serious.
I. wire rope snarling, blind Angle, hard happen bending and plastic deformation, hemp core emerge severe deformation.
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