First, the deviation of the length of the Wire rope
Wire rope in and bucket hoist lifting box connection fixed, if 6 wire rope suspension length is inconsistent, there is loose, then the elastic elongation is different, the cage operation force is uneven, resulting in a large force of the wire rope elongation increased, resulting in 6 wire rope tension imbalance.
Second, the creep of the wire rope
The creep is caused by the tensile difference and elastic deformation of the wire rope on both sides of the friction wheel of the bucket hoist, the force deformation of the wire rope and the liner, the relative sliding on the friction arc is the creep, the amount of the creep is proportional to the running distance and the tension difference, decreases with the increase of the stiffness of the gasket and The wire rope
The direction of creep points to the side with large tension, so when the tensile force of each rope is unevenly distributed, the amount of wire rope creep that is subjected to large tensile force will be greater than that of other wire ropes.
Third, the deviation of the diameter of the rope groove
The deviation of the effective diameter of each rope groove of the friction wheel of the bucket hoist, which results in the effective circumference of each rope is one of the main causes of tension imbalance.
Friction Wheel 6 rope groove diameter is not consistent, so that in the operation of each root lifting wire rope stroke is not equal, so that the actual load of each lifting wire rope is different, the rope groove lighter wire rope tension increased. The calculation results show that the diameter of the rope groove of JKD multi-rope Friction bucket hoist is 1 mm, and the difference of wire rope length is 323 when running an lifting process (the lifting height difference is 566 m). 5 mm, thus, the diameter of the rope groove appears a small deviation, in the lifting process will bring a large difference in wire rope travel.
Four, deviation of wire rope stiffness
Because the material and machining precision of the steel wire rope of the bucket hoist can not be absolutely the same, the elastic modulus and cross-sectional area of each wire rope are different, so the elastic elongation is different and the tension is different when the rope is in the load state.
Five, wire rope self-balancing system fault
JKD Multi-rope friction bucket hoist in the tank and counterweight on the installation of 6 automatic balance suspension device, automatic adjustment of wire rope tension imbalance, equipment failure, will not automatically balance the amount of wire rope expansion, resulting in unbalanced wire rope tension.
