Medium-soft rock cutterhead and cantilever tunneling machine with same

A cutter head and soft rock technology, applied in mining equipment, tunnels, earthwork drilling and mining, etc., can solve the problems of low cutting efficiency of cutter heads, improve cutting strength and rock entry efficiency, improve driving efficiency, facilitate disassembly and assembly and The effect of position adjustment

Active Publication Date: 2021-04-06
CHINA RAILWAY HI TECH IND CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the deficiencies in the above-mentioned background technology, the present invention proposes a medium-soft rock cutterhead and its cantilever roadheader, which solves the problem of low driving efficiency of the cutterhead in the medium-soft rock formation in the prior art

Method used

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  • Medium-soft rock cutterhead and cantilever tunneling machine with same
  • Medium-soft rock cutterhead and cantilever tunneling machine with same
  • Medium-soft rock cutterhead and cantilever tunneling machine with same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0026] Example 2, such as image 3 As shown, a kind of medium soft rock cutter head, in order to improve the overall excavation efficiency of the cutter head, a spiral cutter groove 3a can also be provided on the tapered side plate 5, and the wedge-toothed cutter 2 is evenly arranged in the spiral cutter groove 3a. The plane where the edge of the wedge-tooth cutter 2 is located is perpendicular to the tapered side plate 5 to ensure its excavation efficiency. The knife seat part 201 matches the spiral knife groove 3a, and the connecting part 203 is detachably connected with the spiral knife groove 3a. The connecting part 203 is connected with the outer groove wall of the annular sipe 3 or the spiral sipe 3 a through fastening bolts. Similarly, the outer groove wall of the spiral knife groove 3a is provided with a positioning screw hole, and the connecting part is connected with different positioning screw holes to realize the adjustment of the position of the wedge-toothed kni...

Embodiment 3

[0029] Embodiment 3: as Figure 4 , 5 A cantilever roadheader is shown, which includes the medium-soft rock cutterhead described in Embodiment 2. A cutting arm is provided on the cantilever roadheader, and the cutting arm is connected to the medium-soft rock cutterhead. Under the action of the cutting arm, the medium-soft rock cutter head can carry out swing and axial excavation. When the rock is being broken, mainly the disc-shaped hob installed on the front panel of the cutter head squeezes the rock that cuts the face and peels the rock off the face. Free cross-section rock breaking: mainly the wedge-toothed cutter installed on the conical panel of the cutterhead cuts and breaks the rock. Flexible and efficient rock breaking, improving tunneling efficiency.

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Abstract

The invention discloses a medium-soft rock cutterhead and a cantilever tunneling machine with the same, and solves the problem that in the prior art, a cutterhead is low in tunneling efficiency of medium-soft rock strata. According to the technical scheme, the medium-soft rock cutterhead comprises a frustum cutterhead body; a disc-shaped hob is arranged on the front end face of the frustum cutterhead body; wedge tooth cutters are arranged on the conical face of the frustum cutterhead body; and a cutting arm is connected to the rear end part of the frustum cutterhead body. According to the invention, swing and axial tunneling can be conducted under the action of the cutting arm. During rock breaking by forward pushing, the disc-shaped hob installed on a front panel of the cutterhead extrudes and cuts rocks on a tunnel face, and the rocks are stripped off from the tunnel face. During rock breaking by free section swing, mainly, the wedge tooth cutters installed on a conical panel of the cutterhead are used for breaking the rocks in a suspension cutting manner; and extrusion type rock breaking of the disc-shaped hob is matched with suspension cutting type rock breaking of the wedge tooth cutters, so that flexible and efficient rock breaking of medium-soft rock strata is realized, and the tunneling efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of roadheaders, in particular to a medium-soft rock cutter head and a cantilever roadheader thereof. Background technique [0002] With the active promotion of underground space development projects such as national water conservancy and hydropower underground projects, subway tunnel projects, urban comprehensive pipe corridors and underground parking lots, cantilever roadheaders that can excavate free sections are economical, low in construction costs, and accepted by the market. The degree is getting higher and higher. [0003] At present, the cutting head of the cantilever roadheader is equipped with pick cutters, which are mainly used for coal mining and soft soil formations. The disc hob commonly used for rock breaking on TBM is an excavating tool for breaking hard rocks. It is installed on the shield machine. On the cutter head of large trenchless construction equipment such as , TBM, pipe jacking, et...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/087E21D9/08
CPCE21D9/087E21D9/08
Inventor 李翔
Owner CHINA RAILWAY HI TECH IND CORP LTD
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