Force analysis of bucket teeth

by:Join Machinery     2021-04-22
Bucket teeth of excavators are important parts of excavators and also vulnerable parts. They are combined bucket teeth composed of tooth seats and tooth tips, which are connected by a pin shaft.   Bucket tooth force analysis: the bucket tooth working surface is in contact with the excavated material, and the force is different in different working stages in a complete excavation process. When the tip of the tooth first touches the surface of the material, because the speed is very fast, the tip of the bucket is strongly impacted. If the yield strength of the tooth is relatively low, plastic deformation will occur at the tip.  As the digging depth continues to increase, the force of the bucket teeth will continue to change. When the bucket teeth cut the material, a certain relative movement between the bucket teeth and the material will produce a large positive squeezing force on the surface of the bucket teeth, which will generate a large friction force between the working surface of the bucket teeth and the material. If the material is hard rock or concrete, the friction will be very large.  The result of repeated action of the friction of the bucket teeth is that different degrees of surface wear are produced on the working surface of the bucket teeth, which in turn produces a relatively deep furrow. The positive pressure of the front working face is obviously greater than that of the rear working face. Workers can judge that the positive pressure and friction are the main external mechanical factors of bucket tooth failure according to the wear of the front working face, which plays a major role in the process of failure. effect.
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