With the increase in the number of elevators, elevator accidents have gradually increased, Compected Wire Ropes elevator safety has aroused widespread concern. Elevator service life and failure rate and elevator safety management quality is closely related, the use of units should be set full-time or part-time Special equipment safety Administrator, to strengthen the day-to-day management of elevators. Compected Wire Ropes After the elevator is used for a certain period of time, the traction wire rope will appear oil shortage phenomenon, the surface of the wire rope should be lubricated. If the wire rope is short of oil, it is easy to rust the wire rope, as well as with the rope pulley to produce dry friction, thus serious wear rope groove and wire rope. At the same time, Compected Wire Ropes the tension of the wire rope must be adjusted constantly in the process of maintenance, so as to ensure the tension between the rope, so as to improve the service life of the wire rope.
When the wire rope broken wire, Compected Wire Ropes broken strands of wire rope to do the following routine inspection: broken strands, broken wire root number and location. Case (described in this case) the new passenger ladder, steel wire rope has a broken strand, the fracture neat, bright, the rest of the wire is not broken, Compected Wire Ropes it is not used wire rope flaw detection instrument for wire rope flaw detection. Using vernier caliper to measure the nominal diameter reduction of wire rope is less than 7%, and there is no obvious external wear on the surface of wire rope. Steel wire Rope lubrication, clean condition is good, no corrosion and wire rope core extrusion phenomenon. Line and its combination have no abnormal condition. The wire rope is in good condition, the rope groove surface is smooth, Compected Wire Ropes and the depth caliper measures the depth of the wire rope lying in the groove.
The tension deviation of the traction rope is too large. On-site inspectors use wire rope dynamometer to measure the tension deviation of several wire ropes and calculate, found that 5 wire rope tension is basically uniform, and the average deviation is not greater than 5%, so to exclude this reason caused wire rope broken stock.
The design of traction tractor is unreasonable. Compected Wire Ropes In order to ensure the traction ability of the design requirement, the angle of the towing rope and the towing wheel should be increased when the equivalent friction factor is invariable. The elevator uses a gear-free traction machine, wire rope nominal diameter of 10mm, in order to provide sufficient traction capacity, Compected Wire Ropes the elevator is designed as a complex winding form to increase the angle of the package, the wire rope needs many times bending and winding on the traction wheel, which greatly affects the life of the wire rope, and puts forward higher requirements for the strength, Compected Wire Ropes toughness and bending resistance of the wire rope. For this case, because the elevator for the new passenger ladder, the use of a short time, wire rope basic did not produce wear, Compected Wire Ropes so because of design reasons for wire rope broken stock can be excluded.
Lift maintenance. The steel wire rope is an important load component of the elevator, carrying all the quality of the elevator car, should pay special attention to the maintenance of the steel wire rope during the elevator maintenance. In view of this case, Compected Wire Ropes the wire rope is basically in a completely new state, there is no obvious difference between the broken strand wire rope and other steel wire ropes, Compected Wire Ropes so it can be excluded that the mechanical performance of the wire rope is not up to standard or the maintenance and maintenance is not in place and the phenomenon of sudden broken stock.