As a key component for transmitting power and motion, the performance characteristics of the crane coupling directly affect the reliability, safety and work efficiency of the equipment. The following are the main performance characteristics and classification analysis of the crane coupling:
High load-bearing capacity
Features: Able to withstand frequent start-stop, heavy load impact and torque fluctuations of the crane.
Application: Such as gear coupling (transmitting large torque), universal coupling (heavy load multi-directional adjustment).
Compensation deviation capability
Radial/angular deviation compensation: Allow a certain range of axis deviation (such as elastic coupling can compensate for 0.5°~3° angular deviation).
Axial floating: Such as diaphragm coupling can adapt to axial thermal expansion.
Typical types:
Drum gear coupling: Allows comprehensive deviation (radial ≤0.4mm, angular ≤1.5°).
Cross shaft universal coupling: Used for large angle deviation (up to 15°~25°).
Buffering and vibration reduction performance
Elastic element design: materials such as rubber and polyurethane absorb vibration (such as tire-type couplings have significant vibration reduction effects).
Application scenarios: Crane mechanisms with high speed or frequent start and stop (such as lifting mechanisms).
Durability and low maintenance
Lubrication-free design: such as polyurethane plum blossom couplings, which reduce maintenance frequency.
Wear-resistant materials: The gear coupling is quenched with alloy steel, and its life can reach more than 100,000 hours.
Safety protection function
Overload protection: The shear pin coupling disconnects when overloaded to protect the transmission system.
Electrical insulation: Non-metallic couplings avoid current corrosion (such as insulating diaphragm couplings).
Adapt to harsh environments
Anti-corrosion treatment: Stainless steel or plated couplings are used for port cranes (salt spray environment).
Sealing design: Prevent dust/water from entering (such as fully enclosed gear couplings).
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