STT113 TOWER CRANE OPERATION AND SERVICE MANUAL
10B-2
Ⅰ
Ⅰ
Ⅰ
Ⅰ
. Description:
Although its structure is compact and its appearance is strong, the fatigues and wear
of wire rope is unavoidable. The worn and aging wire rope will damaged rapidly,
which would result in severe accidents (both on person and equipment) if the users do
not pay special attention to it. The change of the wire rope can be found by periodical
inspection. For the hoist equipment, the wire rope should be taken as a kind of
expendable. They should be changed as its intensity and strength reduces.
. Fitting wire rope
Ⅱ
Ⅱ
Ⅱ
Ⅱ
The type and specification of new wire rope should be the same as the original one. If
not, the user must ensure that the characteristics and the capability of new wire rope is
not lower than the original one, and the new wire rope is applicable to the groove of
drum and pulleys. Prevent wire rope from knotting, twisting together, and buckling or
adhering sundries when drawing out the wire rope from scroll or wire rope roll.
Before using the wire rope of the crane, the consumer should ensure that all kinds of
the device involved with the work of wire rope are in order and run properly normally.
In order to keep the wire rope in place steadily, operate the crane to hoist 10% of rated
load for several times.
1. Fitting new wire rope
1
）
）
）
）
Completely unwind the rope on the clean ground, avoiding any twist (
see
Fig.
10-2-1
). If it is not possible to lie out the whole rope completely, unwind it in
large loops. In this way, dangers can be avoided from occurring when the wire
rope is wound on the drum.
