The relationship between cutting teeth, cutting teeth sleeve and cutting teeth seat

1、 The interdependent combination relationship

Cutting teeth are cutting components that directly come into contact with coal and rock media, undertaking the core task of crushing coal and rock, and are known as the "teeth" of mining equipment. Its performance directly affects cutting efficiency, but it relies on the support of the cutting sleeve and cutting seat to function properly.

The cutting gear sleeve is installed on the outside of the cutting gear, and its main functions include:

Protecting the cutting teeth: During the operation of coal mining machines and other equipment, the cutting teeth will be subjected to impact and friction forces. The cutting teeth sleeve can reduce their direct friction with coal dust and other particles, extending their service life.

Auxiliary positioning: Ensure that the cutting teeth do not loosen or shift in severe vibration environments, so that the cutting teeth fit more tightly with the cutting tooth seat, ensuring smooth cutting work.

The pick seat is the installation foundation for the pick and pick sleeve, usually fixed by welding to the drum of the coal mining machine, the cutting head of the tunneling machine, or the drill bit of the rotary excavator. During installation, the tooth handle is first inserted into the tooth sleeve, and then the two are combined into the tooth seat to form a complete cutting unit. If the tooth holder is missing, the tooth and tooth sleeve will not be able to function effectively.

2、 Collaborative response to working condition challenges

The properties of coal and rock vary greatly, from soft coal seams to hard rocks, and the three need to work together to cope with different working conditions:

Soft coal seam:

The wear of the gear teeth mainly comes from high-frequency friction, and the protective effect of the gear teeth sleeve can reduce direct friction and extend the service life.

The tooth cutting seat needs to have toughness to buffer the small vibrations generated by high-frequency cutting, ensuring stable operation of the tooth cutting.

Hard rock:

Cutting teeth are subjected to enormous impact loads and shear forces, requiring high hardness and impact resistance; The gear sleeve needs stronger wear resistance.

The tooth cutting seat needs to have sufficient strength and rigidity to prevent deformation or damage under impact force and ensure system reliability.

3、 Technological innovation drives overall development

With the advancement of mining engineering technology, the performance requirements for the three have increased, and technological innovation is mainly reflected in the following aspects:

Material upgrade:

Cutting teeth: Made of high-strength alloy steel combined with special hard alloy heads to enhance wear resistance and impact resistance.

Cutting gear sleeve: High quality alloy steel that is wear-resistant and impact resistant is selected to enhance its protective ability.

Cutting gear seat: using high-strength and tough materials to enhance load-bearing capacity.

Structural design optimization:

The shape of the cutting teeth is more in line with mechanical principles, reducing cutting resistance.

The internal structure of the gear sleeve has been optimized, resulting in a more precise fit with the gear teeth and gear seat.

Innovation in the fixing method and internal structure of the gear holder improves stability and reliability.

Synergy effect: Technological innovation is not isolated, but interrelated and mutually reinforcing, jointly improving overall performance, thereby enhancing the efficiency and service life of mining equipment.

4、 Typical case: Durbert's technical practice

Duelbert is at the forefront of the industry in the research and production of cutting teeth, cutting sleeves, and cutting seats. Its technical practices include:

Material selection:

Cutting teeth: Adopting a self-developed high-performance alloy formula, endowed with excellent impact resistance and wear resistance characteristics.

Cutting gear sleeve: Developed through special processes, it can provide comprehensive protection for cutting gears under complex working conditions.

Cutting gear seat: Made of high-strength alloy to ensure stability and reliability under heavy loads.

Structural design:

Using computer simulation technology and combining with actual working condition data, carry out integrated optimization design for the three.

Make the stress distribution more uniform during tooth cutting, improve the accuracy of the fit between the tooth sleeve and the tooth, and the tooth seat. The fixed structure of the tooth seat is more secure and easy to install and maintain.