In terms of usage, picks can be roughly divided into two categories: mining picks and engineering picks. The so-called mining cutter refers to the cutter used in coal mines, which is a coal cutting tool. Engineering cutting teeth are mainly used in highway engineering.
Mining picks are cutting tools that directly break rocks and coal on mining machinery such as tunneling machines and coal mining machines. They are mainly used to cut coal and rock, and are usually used in combination with gear sleeves and gear seats. According to shape, mining picks are divided into two types: pickaxe picks and knife picks.
What are pickaxe shaped and knife shaped picks? Shandong Aide tells you that a pickaxe shaped pick is a pick with a conical head, and its geometric shape is a pen tip, or in other words, a cone. And a knife shaped cutter is a cutter with a flat tooth head, which has a geometric shape similar to the cutter body. Both types of picks are mining picks used for mining machinery.
Knife shaped cutter vs. pickaxe shaped cutter
Due to the fact that the cutting teeth are only used as accessories for mining machinery, they must be matched with the mining machinery. According to different types of mining machinery, we can also classify them into: shearer picks, tunneling machine picks, continuous mining machine picks, anchor excavator picks, and so on.
Of course, the two most commonly used categories are coal mining machine picks and tunneling machine picks.
1. Coal mining machine cutter: The coal mining machine cutter is the main cutting tool on the drum of the underground coal mining machine, which is installed on the drum in conjunction with the gear sleeve and gear seat, and is one of the vulnerable parts for coal falling. Its performance directly affects the production capacity of coal mining machinery, power consumption, working stability, and the service life of other related components.
2. Mining machine cutter models: U47, U82, U80 series (U82, U84, U85), U90 series (U92, U94, U95), U170, etc.
3. Cutting teeth of tunneling machine: Cutting teeth of tunneling machine are the main cutting tools on the cutting head (gun head) of tunneling machine, which are installed on the cutting head in conjunction with the tooth seat and are one of the vulnerable parts for tunnel excavation. Its performance directly affects the production capacity, power consumption, working stability, and the service life of other related components of the tunneling machine.
4. Cutting tooth models of tunneling machines: U47, U135, S100, S120, S150, S110, S200, S260, S160, etc.
[2]. Engineering pick
The application environment of engineering cutters is completely different from mining cutters, one is on the road surface and the other is underground. One is accessories for construction machinery, and the other is accessories for mining machinery. According to the different types of machinery, engineering cutting teeth can be roughly divided into: rotary excavator cutting teeth, milling machine cutting teeth, etc.
A rotary excavator refers to a rotary drilling rig, whose cutting teeth are installed on the drill bit of the rotary excavator. The milling machine refers to a pavement milling machine, which is one of the main types of asphalt pavement maintenance and construction machinery.
[3]. Other types
The above two classification methods are not absolute either. Some people will classify the cutting teeth into spark free cutting teeth, spin cutting teeth, and wear-resistant cutting teeth based on their technical characteristics. Spark free cutting teeth means that the cutting teeth do not produce sparks during underground use. Spin cutter means that the cutter can rotate on its own during the process of cutting coal and rock, ensuring uniform wear of the cutter and extending its lifespan. Wear resistant cutting teeth, which means that the cutting teeth have good wear resistance and will not fail quickly.
In addition, according to different geological conditions and rock hardness, cutting teeth can also be divided into standard cutting teeth, half rock cutting teeth, whole rock cutting teeth, hard rock cutting teeth, etc. The so-called standard cutting teeth are ordinary coal cutting teeth. Four fifths of the coal seams underground are made of coal, so use coal cutters. If four fifths of it is rock, then use a full rock cutter. If the hardness of the rock is relatively high, hard rock cutters will be chosen.