Drum Couplings

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  DC Drum Coupling
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  WJ Drum Coupling
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  WJA Drum Coupling

Drum coupling is a new type of flexible coupling, mainly used for connecting the output shaft of the reducer of the lifting mechanism in lifting equipment with the wire rope drum, and is also suitable for other similar mechanical equipment that not only transmits torque but also bears radial loads. However, it should be noted that it cannot be used as a transmission that needs to withstand axial loads.

The drum coupling consists of multiple components, including an outer gear shaft sleeve with drum shaped teeth, an outer sleeve with connecting flanges and inner gear rings, a bearing ring with an outer spherical surface, an end cap, a sealing ring, etc. In addition, it is equipped with positioning wear indicators, lubricating oil holes, and ventilation holes to ensure the normal operation and easy maintenance of the coupling.

The working principle of the drum coupling is to use the elastic elements arranged in the circumferential direction in its structure to connect the main and auxiliary hubs of the coupling halves. The spiral of the elastic element is fixed to the coupling through a metal clamp, allowing the elastic body to deform freely in the space between the main and secondary hub of the coupling. This deformation can counteract elastic displacement and be achieved through the free deformation of the axial, radial, and axial inclination angles of the coupling elastic body.

Performance characteristics of barrel coupling
01. Strong load-bearing capacity: The drum coupling can withstand large radial loads and transmit large torques, and has a large overload capacity.
02. Good positioning performance: Its structure is compact, sturdy, and has good positioning performance, making installation and adjustment easy.
03. Easy maintenance: Equipped with a positioning wear indicator, it is convenient to check the wear condition of the coupling and perform maintenance in a timely manner.
04. Wide working temperature range: Its working temperature range is -25~80 ℃, suitable for various environments.

Installation and maintenance of barrel coupling
01. Preparation before installation: Before installation, the mating surfaces of the connections should be checked, cleaned of grease, deburred, and wiped clean of oil stains.
02. Installation steps: During installation, specific steps need to be followed, including heating the external gear sleeve, packaging it on the output shaft of the reducer, combining the outer sleeve and inner cover with the sealing ring, coating the anti rust cover and entering the drum, etc.
03. Axial positioning: When installing the coupling, it is necessary to ensure correct axial positioning, otherwise the elastic horizontal displacement generated by the drum during operation may damage the axial limit of the coupling and cause connection failure.
04. Regular maintenance: The relative position between the positioning wear pointer and the positioning wear mark of the coupling, the condition of the connecting bolts, etc. should be checked regularly, and lubricating grease should be added to ensure their normal operation.

In summary, drum couplings play an important role in lifting equipment and other similar mechanical devices due to their unique structure and superior performance.