Tunnel boring machine
A technology of tunnel boring machine and body, applied in tunnels, mining equipment, earth-moving drilling, etc., can solve the problems of cumbersome, brittle, unfavorable tooth head replacement, etc., to achieve the effect of rational use of space, prevention of shaking, and improvement of service life
Inactive Publication Date: 2020-11-03
邱鑫侨
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Problems solved by technology
[0003] The cutting head is a rotating part that directly cuts rocks on the roadheader. The pick is the main part of the cutting head. The existing pick is welded to the tooth body by brazing. Under the action of impact load, the brazing The hardness will decrease, and the pick is in a state of high stress. When encountering hard coal rock, the high pressure stress exceeds the strength of the cemented carbide or the limit of the brazing degree, and brittle cracks will occur. It will be worn due to the impact force, so the cutting head needs to be replaced. The brazing method is not conducive to the replacement of the tooth head. The replacement needs to disassemble the entire pick from the cutting head, which is more cumbersome
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[0034] see Figure 1-9 , the present invention provides a technical solution for a tunnel boring machine: its structure includes a pick 1, a shield 2, a cutting head 3, a cantilever 4, a body 5, a transport device 6, a walking mechanism 7, and a blade mechanism 8. Both sides of the body 5 are equipped with a walking mechanism 7, and the body 5 is equipped with a shovel mechanism 8 and a transport device 6. The body 5 is hinged to a cantilever 4, and the top of the cantilever 4 is fixed with a cutting head 3. The cutting head 3 is equipped with a pick 1, and the cutting head 3 is covered with a shield 2;
[0035] The pick 1 includes a tooth body 111, a groove 222, a tooth head 333, and a mounting seat 444. The tooth body 111 is provided with a groove 222, and the groove 222 is fixed with a mounting seat 444. The mounting seat 444 is connected with the tooth head 333, and the tooth body 111 is installed on the tooth seat of the cutting head 3.
[0036] The above pick 1 adopts ...
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The invention discloses a tunnel boring machine which structurally comprises cutting teeth, a protective cover, a cutting head, a cantilever, a machine body, a conveying device, walking mechanisms anda shovel plate mechanism. The walking mechanisms are installed on the two sides of the machine body, the shovel plate mechanism and the conveying device are installed on the machine body, the cantilever is hinged to the machine body, the cutting head is fixed to the top of the cantilever, and the cutting teeth are installed on the cutting head. Compared with the prior art, the tunnel boring machine has the beneficial effects that the cutting teeth are of assembled structures composed of tooth bodies, grooves, tooth heads and mounting bases, and a traditional brazing manner is abandoned, so that the breaking probability of the cutting teeth can be reduced; and the tooth bodies can be rapidly replaced after being damaged, the whole cutting teeth do not need to be disassembled from the cutting head, and assembling and disassembling are convenient.
Description
technical field [0001] The invention relates to the technical field of tunnel construction, in particular to a tunnel boring machine. Background technique [0002] With the rapid development of the national economy, my country's urbanization process continues to accelerate. For a long period of time in the future, domestic urban subway tunnels, hydraulic tunnels, cross-river tunnels, railway tunnels, highway tunnels, municipal pipelines and other tunnel projects will require a large number of tunnel boring machine. Tunnel boring machine is a highly intelligent tunnel construction major technical equipment integrating mechanical, electrical, hydraulic, optical and computer technologies. [0003] The cutting head is a rotating part that directly cuts rocks on the roadheader. The pick is the main part of the cutting head. The existing pick is welded to the tooth body by brazing. Under the action of impact load, the brazing The hardness will decrease, and the pick is in a state...
Claims
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IPC IPC(8): E21D9/10
CPCE21D9/1006E21D9/104
Inventor 邱鑫侨
Owner 邱鑫侨