Construction Machinery Bolts look insignificant, but they play a very important role. They have high strength and strong shear resistance to ensure reliable connection and fixation. At present, many people neglect it, and the phenomenon of bolt misuse is still relatively serious, leading to frequent failure of construction. There are many types of bolts in construction machinery, such as transmission shaft bolts, cylinder head bolts, connecting rod bolts, flywheel bolts, injector fixed bolts, etc.
In the actual maintenance operation, some maintenance personnel found that these bolts were damaged or missing, but they could not find standard bolts for a while. Some randomly took other bolts instead, and some self-processed ones. These bolts left hidden trouble for the later use of construction machinery because of poor material or unqualified processing technology. Some parts need to use “small pitch” of “thin buckle self-tightening” bolts, copper bolts, copper-plated bolts, but the use of ordinary bolts instead, resulting in bolt self-loosening, disassembly difficulties and other phenomena.
Some construction machinery bolt will be stretched, deformed and other defects after use. Some technical requirements stipulate that new bolts must be replaced after several disassemblies and assemblies. Because maintenance personnel do not understand these situations, repeated use of unqualified bolts can easily lead to mechanical failure or accidents. Therefore, in the maintenance of construction machinery, when the bolts are damaged or lost, the bolts that meet the requirements should be replaced in time, and bolts should not be used indiscriminately.
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