Common failure analysis of single-beam crane reducer

[BONOVO]

1. Failure analysis of gear of jib crane reducer

The reducer is an important part of the transmission system of the slewing crane. By analyzing gear meshing, information can be transmitted to the torque, and the high-speed operation of the motor can be adjusted to the speed we need. In the process of transmitting torque, the gear tooth will be broken, the tooth surface pitting, the tooth surface rubber and the tooth surface wear and other mechanical equipment failures. The cause of the gear failure problem is indicated as follows:

1. Fatigue fracture caused by repeated bending under short-term overload or impact load. The double beam crane mainly includes lifting mechanism, operating mechanism, amplitude changing mechanism, rotating mechanism and metal structure. Lifting mechanism is the basic working mechanism of the crane, mostly composed of hanging system and winch, but also through the hydraulic system lifting heavy objects. The single-beam crane operating mechanism is used to vertically move heavy objects or adjust the working position of the crane, and is generally composed of an electric motor, a reducer, a brake and a wheel. The amplitude changing mechanism is only equipped on the boom crane, the amplitude of the boom is reduced when it is lifted up, and the amplitude is increased when it is bent down, which is divided into two kinds: balanced amplitude changing and non-balanced amplitude changing. The intelligent crane is a multi-action lifting machine that lifts vertically and carries heavy objects horizontally within a certain range. [1] The work is characterized by intermittent movement, that is, the corresponding mechanism of taking material, migration, unloading and other actions in the more work cycle is alternately working, and the development and use of cranes in the market is more and more extensive.

2. The tooth surface is not smooth, the convex point causes stress concentration, or the lubricant is not clean.

3. High temperature leads to lubrication failure.

4. Because hard particles can enter the economic friction surface cause wear.

Second, rotary crane reducer gear preventive measures

1. The boom crane can not be used for loading, starting, braking to slow down, smooth, non-specific circumstances prohibit sudden reverse.

2. Replace the lubricant in time, clean the shell, and choose the appropriate lubricant type.

3. Always check whether the lubricating oil system is clean; Found that the lubrication is not clean to replace in time.

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