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　　The sheave is a fixed pulley located above the headframe of a mine shaft, primarily used to support and guide the steel wire rope connecting the hoist drum and the lifting container. It is classified into three types: movable sheave, fixed sheave above ground, and fixed sheave for shaft sinking and underground use. Commonly, it adopts a cast spoke or steel assembly structure. Sometimes, the rim groove of the sheave is lined with polymer material pads to protect the wire rope and extend its service life. Additionally, the design of the sheave considers the matching relationship between its diameter and the diameter of the wire rope to ensure safe operation.

　　The guide wheel is mainly used to direct flexible linear objects such as soft pipelines, steel wires, and nylon ropes. It features a pulley structure that helps reduce effort and, in some applications, serves a tensioning function, such as tensioning the track in an electric shovel's travel system. The performance of the guide wheel is crucial to the overall stability and safety reliability of the system.

　　In summary, sheaves and guide wheels play key roles in mining, engineering, and other fields. Their structural design and material selection are carefully considered to ensure the durability and safety of the equipment.

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heavy machinery

Sprocket, guide wheel

The sheave is a fixed pulley located above the mine shaft headframe, primarily used to support and guide the steel wire rope that connects the hoist drum and the lifting container, changing its direction.

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Sprocket, guide wheel

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