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The Structural and Designing Requirements of Jaw Plates

Henan Hongxing Mining Machinery Co., Ltd.

The jaw plate of jaw breakers includes mobile jaw plate and fixed jaw plate, and each is composed with jaw bed into mobile jaw and fixed jaw.

Jaw plate is fixed on the surface of jaw bed with a wedge-shaped iron and bolts to protect the bed from wear and tear.

The bed of fixed jaw is the rack, and that of the mobile jaw is hung on the eccentric shaft.

Because it is directly exposed to an extrusion force on the stone, so it must have sufficient strength and stiffness.

The mobile jaw bed is generally made of iron or cast steel.

Jaw plate directly contacts with stones, so except bearing the squeeze and impact, it still has strong friction with stones, therefore, it is required to be made with high strength and wear-resistant material.

The model is created on the solid works platform and the jaw crusher is simulated, through the kinematics’ analysis of the jaw crusher, quantitative description of the broken jaw trajectories of mobile, horizontal and vertical as well as the characteristic values, determined the machine cycle at maximum load conditions.

The results show that stress of mobile jaw changes with working position.

The stress distribution pattern of mobile jaw at the maximum load is presented, which can be used as guide to improve product design.

To optimize the dimension on mobile jaw where stress is small and value of the safety factor is too large, to reduce thick part of the structure and its weight, which can be used to increase economic efficiency.

The research can be used to improve machine performance which provides a basis to improve the parameters of mobile jaw, there is practical significance and a better guide to improve the energy saving of jaw crusher. 

Moving along the direction of movement of the mobile jaw crusher promotes discharging effect, so we can guarantee the efficiency of the production of the crusher to a certain extent.

The vertical displacement of mobile jaw is also large in the simulation, so the lining board will be worn quickly, and its service life will be decreased.

As the development of wear-resistant materials and the improvement of liner’s wear-resistant ability, jaw crushers are gradually becoming larger-sized.

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"The Structural and Designing Requirements of Jaw Plates" was written by Mary under the Technology category. It has been read 1562 times and generated 1 comments. The article was created on and updated on 13 October 2012.
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