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Easy Maintenance Crane Coupling Protect The Prime Mover For Industrial Equipment
Crane Coupling Introduction:
Couplings are connections between shafts. On the crane, the torque of the motor is transmitted to the low-speed shaft through the reducer and coupling to complete the work of lifting the load, running the trolley and running the crane. Commonly used are gear couplings, elastic pin couplings, etc., and gear couplings are more commonly used on cranes.
Classification of Crane Couplings:
1. Crane cross coupling
The Oldham coupling is generally installed between the low-speed shaft end of the reducer and the wheel. It has the advantages of simple structure and large transmission torque, and it is more demanding on the installation accuracy. After using for a period of time, it is necessary to add lubricating oil to the sliding surface corresponding to the Oldham coupling.
2. Crane gear coupling
Gear coupling is a widely used compensation coupling. Gear couplings can be divided into full-tooth couplings and half-tooth couplings according to different structures. The advantages of this coupling are small size, large transmission torque, and can effectively compensate for the offset at both ends of the connecting shaft. However, the cost of this type of coupling is often high, the manufacturing process is complex, and the installation accuracy is high.
Safe use of couplings:
The coupling is the intermediate connecting part of each motion mechanism, which has a direct impact on the normal operation of each motion mechanism. Therefore, when using it, you must pay attention to:
① The coupling is not allowed to exceed the specified axis line skew and radial displacement, so as not to affect its transmission performance.
② The bolts of the coupling shall not be loose or damaged.
③ The gear coupling and the cross coupling should be lubricated regularly, and grease should be added once every 2 to 3 months to avoid severe wear of the gear teeth and cause serious consequences.
④ The contact length of the tooth width of the gear coupling shall not be less than 70%; its axial movement shall not be greater than 5mm.
⑤ The coupling is not allowed to have cracks, if there are cracks, it needs to be replaced (it can be hit with a small hammer, and judged according to the sound).
⑥ The keys of the coupling should be closely matched and not loose.
⑦ The tooth thickness of the gear coupling is worn out. When the hoisting mechanism exceeds 15% of the original tooth thickness, and the running mechanism exceeds 25%, it should be scrapped, and if there are broken teeth, it should be scrapped.
⑧ If the elastic ring of the pin coupling and the sealing ring of the gear coupling are damaged and aged, they should be replaced in time.
Crane Coupling Photo:
