Two major analysis on maintenance of cat excavator bucket teeth

Reasons for bucket teeth damage

During the excavation operation, each working surface of the cat excavator bucket teeth is in contact with the excavated object, and the force is different in different working stages during the excavation process.

1. When the tip of the cat excavator bucket teeth first touches the surface of the material, due to the faster speed, the tip of the bucket tooth will receive a strong impact load. If the tooth material has a low yield strength, plastic deformation will occur at the tip. As the digging depth increases, the force of the bucket teeth will change.

2. When the cat excavator bucket teeth cuts the material, relative movement occurs between the bucket tooth and the material, resulting in a great squeeze on the surface, which creates a relatively large frictional force between the working surface of the bucket tooth and the material. If the material is hard rock, concrete, etc., the friction will be great.

The repeated action of the above two processes will cause different degrees of surface wear on the working surface of the bucket teeth, and then produce a deep furrow that will cause the bucket teeth to be scrapped. This directly affects the service life of the bucket teeth.

How to maintain

1. If the cat excavator bucket teeth are worn out, the digging function will decrease. Because the bucket teeth on both sides are easy to wear, the digging method should be considered to balance the wear. If the difference between the length of the tooth at the center and the length of the tooth at both ends reaches 2 to 3 cm, it should be replaced.

2. Before operation every day, check the looseness and wear of the bucket teeth. If the wear of the bucket teeth exceeds the following service limit, the teeth must be replaced to prevent damage to the bucket and reduce work efficiency.

3. When a general purpose bucket is used for ordinary digging, the standard for reinforcement and aggravation should be 10-15% of the bucket weight. To

When a general purpose bucket is used for rock excavation, the standard for reinforcement and aggravation should be 20-25% of the bucket weight. The bucket is different from ordinary welding components. It is made of special steel and requires the welding material to be compatible with the performance of the bucket base material.

4. The excavator driver should try not to retract the bucket when lifting the boom, and pay special attention to the coordination of actions during operation. Don't throw the bucket on the rock with too much force in the action of expanding the arm and sending the forearm, the bucket teeth will be broken or cracked, or the big and small arms will be broken.

In addition to daily maintenance, the teeth should be selected reasonably according to different working conditions to avoid unnecessary wear.

After reading the above two main points of content analysis, do you instantly feel that the cat excavator bucket teeth of the bucket are really crucial to the efficient development of the entire excavation work. As the saying goes: three points depend on use, seven points depend on support. Dig friends to learn the above new skills quickly.