The use of multi-strand rotation resistance steel wire rope, such as 35 * 7 or 19 * 7 structure of wire rope, in the case of relatively large head, wire rope is not easy to strand, if it is more than one wire rope, can a right twist wire rope and a left twist wire rope mixed use, this stranding situation will be greatly reduced. Tower crane commonly used wire rope with manganese phosphate coating wire rope and galvanized wire rope, manganese phosphate coating wire rope is very wear-resistant, fatigue life is about three times the same structure glossy wire rope, the choice of manganese phosphate coating multi-strand wire rope can effectively prevent stranding.
Installation and maintenance of steel wire rope.
1. Wire rope rope head processing to the crane installation wire rope, the wire rope from the rope barrel to take down, should pay special attention to deal with the rope head of the wire rope, to prevent the rope head of the wire rope loose head.
a. Cut intercept wire rope with a knife, need to intercept the two rope head in advance, with the appropriate thickness of the wire bundle good, pay attention to bundle diameter as small as possible, in order to facilitate the next step of installation through rope work.
b. If the bundle of wire, the diameter increases after causing difficulties in wearing rope, it is necessary to use the arc welding wire rope rope head. In order to prevent the electric arc cutting, the wire rope head open strand, also must be in the cutting before the two rope head wire bundle, with the electric arc will rope head welding fixed together, determine not to open strand, and then the bundle wire removal.
2. Prevent wire rope kink, bite rope wire rope is generally wound into disk storage in the special rope tube on the wire rope, take down the installation can not simply take down the steel rope from the rope tube on the reverse winding, which will lead to wire rope internal kink, but should be installed before will take down the wire rope and put on a clean cement flat or highway, so that it presents a natural state, so as to eliminate the kink. So that assembly and replacement of wire rope to avoid the wire rope kink, reduce its service life. In the use process, the wire rope also need to avoid kink or messy rope phenomenon. If the wire rope produce kink or messy rope phenomenon, will cause the wire rope violent wear and damage. Crane lifting mechanism main hook wire rope length of 151 meters, after a period of time, in the lifting work process often appear twisted knot or disorderly rope, affecting the safety and efficiency of lifting work, at this time if the renewal of wire rope will be more wasteful, it should be removed in time to deal with. The processing method is: in the long about the clean ground, will wire rope natural, straight place, and then drag back and forth several times, in order to release off the additional torque on the wire rope, can completely eliminate the phenomenon of disorderly rope.
3. The maintenance of wire rope related parts install wire rope collar, rope clip, etc., be careful not to hurt the wire rope, but also regular lubrication and maintenance of the wire rope pulley, roller and other related parts or net, often keep clean and good lubrication state, in order to make them free and flexible rotation, reduce the wire rope running resistance and wear. Often check the rope questionable wear, missing edge situation, find the problem, immediately repair or update. Should also ensure that the diameter of the rope groove fitting is as big as possible, in order to reduce the bending stress on the wire rope, further improve the service life of the wire rope.
4. The installation and commissioning of steel wire rope reasonable installation and commissioning, can reduce the additional load of steel wire rope, improve the service life of steel wire rope. Suppose A, B, 0 each for a wire rope of two ends and a middle point, then the installation according to the installation is better than the installation method. Just installed wire rope for the necessary debugging, lubrication, after the break-in work, it is best not to immediately carry out heavy load work. For example, the crane lifting mechanism main hook wire rope length for, wear rope work is more complicated, the best trial installation or pre-installation; installation of the wire rope two rope end connection should be pre-fixed first, and then the wire rope operation of the air load test, to be in place naturally in all parts of the wire rope, twisting phenomenon after the minimum, and then the wire rope two rope end for the last fixed. If found that the installation of the wire rope has bitten rope, twist knot and other abnormal phenomenon, should be the two rope end of the wire rope disassembly, the wire rope for adjustment and then install. 5 steel wire rope local maintenance for the wire rope asymmetric wear, can be through the maintenance technology of the head treatment, theoretically the service life of the wire rope can be extended nearly double, although the local maintenance of the wire rope increased the maintenance work place, but can achieve the whole Steel wire rope wear and other service life. a If the section of the wire rope wears, but does not reach the renewal standard, and the OB section basically does not wear, then the installation method can be adjusted to BOA installation method, let no wear OB section of the wire rope continues to function. b . For the front end of the wire rope occurred symmetrical wear, if the whole wire rope of the back end for non-wear section, can be used to truncate the processing method, the wire rope wear section will be adjusted to non-wear section, let the non-wear section continue to play a role.
Post time: Dec-26-2022