| Customization: | Available |
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| Certification: | ISO 9001:2000 |
| Standard: | GB |
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Coal picks knife shape picks and picks two kinds of picks. Pick type pick part of the handle is cylindrical, fixed in the tooth seat with a spring ring, very convenient disassembly. The structure is simple, can click the coal planing, the depth of the knife is large, can be automatically sharpened in the operation and often keep the teeth sharp, shearer load is stable. At present, the main use in coal mining enterprises is pick pick, which can be divided into two categories, namely cutting coal pick and rock pick.
The cutting and crushing process of coal rock is the main process of coal cutting. According to the mechanical characteristics, the cutting and crushing process can be roughly divided into four stages: deformation stage, crack stage, compaction core formation stage, crack propagation and disintegration stage. In each cycle, all four processes are done instantaneously.
The four processes can be divided into two stages according to their characteristics. The first stage is the stage of forming cracks and forming compacted nuclei after elastic and plastic deformation, which is the fracture of the first crack form. The second stage is the fracture stage, which is based on the first stage. Hertz crack around the cone hole expands and collapses along the weak plane of bedding and joint in the inner coal and rock mass under the action of cantilever beam loading system, which is the fracture in the form of fracture.
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