L68B3 Mast SectionTower crane equipment in use of the common problems, which are fatal
1. What are the consequences for the enterprise if this device fails? The cracking of the tower crane lug plate will cause serious consequences to the enterprise and bring unnecessary economic losses to the enterprise. On the one hand, the construction site under construction will have to stop work for repair, resulting in the enterprise being unable to finish the work on time normally On the other hand, if there is a problem with the tower crane and it causes casualties to the workers on the construction site, the enterprise will have to face the bad influence on its reputation in addition to the compensation.
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2. Why is this a problem in normal use? There are many reasons for this situation, most of these problems are due to welding technology and materials not up to standard, there may also be operational problems, such as tower crane overweight, improper operation, when the crane is too heavy, if you do not drop it lightly, it will cause the tower crane shaking left and right, and cause the ear plate of the tower crane to crack. 3. . The parts of the equipment that are defective are fatal and can not be manufactured ? 1 standards can not be strictly enforced . The common problem is that the luffing mechanism is not equipped with a luffing trolley Rope breaking and Shaft Breaking Protection Device; no requirement for weighing in counterweight manufacturing drawing, the fixed position of counterweight does not conform to the design; incomplete electric appliance protection device, many tower cranes have no alarm device, under-voltage protection device, phase-break protection device and zero-position protection device . None of the above issues meet the requirements of the relevant standards . 2 There are management problems . The result is that the model of the new factory equipment is not in conformity with the quality certificate, and there is error in the size of the Jib Rod, etc. . 3 The instruction manual is not perfect . For example: Do not provide high-strength Bolt pre-tightening torque value; Lifting characteristics, the rated lifting quality when the curve does not mark the 2-fold rate of the wire rope, the rated lifting quality when the 2-fold rate of the wire rope is raised 4-fold rate, the diameter of the lifting wire rope is on the small side, the type of the wire rope is not clearly marked, the point contact wire rope is selected, instead of wire-to-wire . How to negotiate and reach an agreement with the manufacturer ? When the tower crane goes wrong First of all, the tower crane manufacturers, the same is to consult lawyers-related issues, technical personnel to examine the problem of equipment, master multi-hand information, negotiations with the manufacturers, so as to obtain compensation, to make up for the economic losses of the project.
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