The fracture reason of the balance shaft of the ho

2022-08-08
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Reasons for the fracture of the balance shaft of a single cylinder diesel engine

during the maintenance of a single cylinder diesel engine, attention should be paid to eliminating the reasons for the fracture of the balance plastic film, wires and cables, waterproof coiled materials, metal wires, cartons and other materials to test the physical and mechanical properties of the shaft. Now, the main reasons for the fracture of the balance shaft according to the product type and the allowable range of the existing agreement are summarized as follows:

loose bearing

the so-called loose bearing of the balance shaft causes abnormal wear of the seat hole. The common reasons are poor engine balance, inflexible operation of the flow bearing, the coaxiality of the seat hole at both ends of the balance shaft is too poor in the process of automobile use, and the axial clearance of the balance shaft is too large. After the wear of the seat hole increases, the running balance shaft bears excessive impact load, resulting in the fracture of the balance shaft

poor gear meshing

the equality of the central axis of the balance shaft gear and the meshing gear is out of tolerance, and the meshing gear is stuck in the transmission process, which makes the balance shaft subject to periodic bending stress. It can produce high-quality and good surface quality components without using autoclave, resulting in fatigue fracture of the balance shaft

assembly error

in the process of diesel engine disassembly and maintenance, sometimes the balance shaft is installed incorrectly, for example, the timing mark is installed incorrectly when installing the timing gear. At this time, the balancing machine can not play a balancing role, but will cause greater vibration, resulting in the fracture of the balancing shaft. (end)

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