What are the types of jaw crushers? Introduction to 3 common models
Jaw crushers are primary crushing equipment widely used in mining, sand and aggregate, and building material production. They crush large lumps into smaller particles mainly by compression between the moving jaw and fixed jaw. According to the motion mode of the moving jaw, traditional jaw crushers are mainly divided into simple toggle, compound toggle and mixed toggle types. These designs differ in motion trajectory, crushing performance and applicable working conditions.
The upper part of the moving jaw of a simple toggle jaw crusher swings around a fixed shaft, with a relatively simple motion path. Featuring a straightforward structure, reliable operation and stable frame stress, it is suitable for primary crushing. However, the motion characteristics inside its crushing chamber limit its popularity, and it is less widely adopted in modern large sand production lines compared with compound toggle models.
Driven by an eccentric shaft, the moving jaw of a compound toggle jaw crusher swings and lifts simultaneously, following an elliptical motion trajectory. Compared with the simple toggle type, it has a compact structure, larger reduction ratio and higher throughput, leading to broad application. The popular PE series jaw crushers and many modern jaw crushers belong to compound toggle designs or optimized variants based on this motion principle. It is widely used for primary crushing in mining, aggregate and building material industries, especially for materials such as granite, basalt and limestone.
A mixed toggle jaw crusher is an optimized variant developed from traditional jaw crusher mechanisms. Its moving jaw does not follow a pure simple or compound toggle path. By optimizing linkage parameters and crushing chamber geometry, the force on materials and discharge behaviour inside the chamber can be improved to meet requirements on capacity, crushing efficiency and product particle size for various working scenarios. Note that “mixed toggle” is not a universally standard classification name across all jaw crusher products on the market; the actual structure should be judged according to the manufacturer’s specific design.
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