The bucket tooth of excavator is an important and consumable part of excavator. It is a combined bucket tooth composed of tooth seat and bucket tooth, which are connected by pin shaft. This article will roughly introduce the types of bucket teeth.
1. Classification according to scope of application:
Earth teeth are used to excavate soil, sand, gravel and other light working environment. Generally, the earth teeth are matched with the bucket with large bucket mouth area, which has a large stacking surface, so it has a high filling coefficient, saves operation time and high efficiency.
Rock teeth, used for ore, stone ore. Ore loading after blasting, heavy operation strength wear-resistant steel, better excavation performance and more prominent economy.
Conical teeth are used for mining coal mines and geological mines. It is mainly suitable for drilling rock stratum with low hardness and has great impact.
2. Classification according to bucket tooth installation:
Common installation methods include straight mounted bucket teeth and horizontal mounted bucket teeth. The direct installation type refers to the vertical installation of the pin shaft and the front face of the digging bucket teeth, and the horizontal installation type refers to the parallel installation of the pin shaft and the front face of the digging bucket teeth.
Straight mounted bucket teeth are convenient for disassembly. They can be smashed directly from above and have large operation space. During excavation, the directly installed tooth pin will be squeezed by the excavated materials. If the excavation force is large, the clamping force of the expansion spring can not meet the requirements, which is easy to cause the tooth pin to fall off. Therefore, although this structure is easy to disassemble, it is generally used on excavators with small excavators and low tonnage.
The cross mounted bucket teeth are not too convenient to remove, and the side operation space is awesome. When removing a single bucket tooth, special long rod tools must be used in sequence. During excavation, the front face of the cross mounted gear pin will not be squeezed by the excavated materials and can bear a large excavation force. However, it is easy to wear when it is subjected to the reciprocating lateral force in use, resulting in the gear pin falling off. Generally, it is more common when the excavation force is more than 20 tons.
