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Multi-stage decoupling conical cutter head for full-section tunnel boring machine

A tunnel boring machine, full-section technology, applied in tunnels, mining equipment, earthwork drilling, etc., can solve the problems of ineffective rock breaking, poor performance, difficult control of the circular truncated cutter head, etc., to improve the overall rock breaking efficiency, The effect of reducing rock breaking difficulty and ensuring driving stability

Pending Publication Date: 2022-07-15
CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the deficiencies in the above-mentioned background technology, the present invention proposes a multi-stage decoupling conical cutter head for a full-face tunnel boring machine, which solves the technical problems that the existing conical cutter head is difficult to control and has poor performance and cannot efficiently break rocks

Method used

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  • Multi-stage decoupling conical cutter head for full-section tunnel boring machine
  • Multi-stage decoupling conical cutter head for full-section tunnel boring machine
  • Multi-stage decoupling conical cutter head for full-section tunnel boring machine

Examples

Experimental program
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Effect test

Embodiment 1

[0044] A multi-stage decoupling conical cutterhead for a full-section tunnel boring machine, comprising a circular truncated female cutterhead 37 and a circular truncated sub-cutter 41, the large diameter end of the circular truncated female cutterhead 37 being driven by the female cutterhead In cooperation with the main body 32 of the roadheader, the small diameter end of the circular truncated female cutter head 37 is rotatably connected to the circular cone shaped sub cutter head 41, and the large diameter end of the circular cone shaped sub cutter head 41 is connected to the main body of the roadheader through the sub cutter head drive unit. 32 swivel fit. The mother cutter head driving unit and the sub cutter head driving unit are all connected with the hydraulic control unit.

[0045] Specifically, it includes a circular truncated female cutter head 37 that is rotatably connected to the right end of the main body 32 of the roadheader, the circular truncated female cutter...

Embodiment 2

[0049] A multi-stage decoupling conical cutter head for a full-section tunnel boring machine, the female cutter head drive unit includes a first quantitative motor 2, a second quantitative motor 3, a third quantitative motor 4, and a fourth quantitative motor 5. At least one of the sub-cutter drive units includes a variable displacement motor 1 .

[0050] The hydraulic control unit includes a first shut-off valve 6, a second shut-off valve 7, a third shut-off valve 8, a fourth shut-off valve 9, a fifth shut-off valve 10, a sixth shut-off valve 11, a seventh shut-off valve 12, and an eighth shut-off valve. Stop valve 13, ninth stop valve 14, tenth stop valve 15, first three-phase asynchronous motor 16, second three-phase asynchronous motor 17, first variable pump 18, second variable pump 19, quantitative pump 20, first Check valve 21, second check valve 22, temperature sensor 23, three-position four-way proportional reversing valve 24, three-way pressure reducing valve 25, safe...

Embodiment 3

[0055] A multi-stage decoupling conical cutter head for a full-section tunnel boring machine, wherein a cylindrical boss 101 is provided in the center of one end of the circular truncated sub cutter head 41 with a large diameter, and a circular hole is opened inside the cylindrical boss 101. The inner wall of the hole is provided with a keyway for drivingly connecting with the output shaft of the sub-cutter drive unit. A third tapered roller bearing 44 is provided between the outer wall of the cylindrical boss 101 and the inner wall of the circular truncated female cutter head 37 , which facilitates the rotation of the circular truncated sub cutter head 41 .

[0056] Further, the outer ring of the third tapered roller bearing 44 is embedded in the center of the small diameter end of the circular truncated female cutter disc 37, and the small diameter end of the circular truncated female cutter disc 37 is connected with a bearing end cover through several bolts. 42. It is used ...

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Abstract

The multi-stage decoupling conical cutter head comprises a circular-truncated-cone-shaped main cutter head and a circular-truncated-cone-shaped auxiliary cutter head, the large-diameter end of the circular-truncated-cone-shaped main cutter head is matched with a heading machine body in a rotating mode through a main cutter head driving unit, and the small-diameter end of the circular-truncated-cone-shaped main cutter head is connected with the large-diameter end of the circular-truncated-cone-shaped auxiliary cutter head in a rotating mode. And the large-diameter end of the circular-truncated-cone-shaped sub-cutterhead is in rotary fit with the heading machine main body through the sub-cutterhead driving unit. According to the invention, the multi-stage circular-truncated-cone-shaped cutterhead is used for replacing a traditional planar cutterhead, so that the acting area of the cutterhead and an excavation surface is increased, stress concentration is avoided, a certain space can be provided for improving the installed power of a cutterhead driving system, and the internal space of the cutterhead is increased by the conical structure of the multi-stage decoupling circular-truncated-cone-shaped cutterhead; convenience is provided for maintenance and operation of the cutterhead, and the personal safety of maintenance personnel is guaranteed.

Description

Technical field [0001] The invention relates to the technical field of cutting devices for full-section tunnel boring machines, specifically a multi-stage decoupling tapered cutterhead for full-section tunnel boring machines. Background technology [0002] The cutterhead system in the full-section tunnel boring machine is the core subsystem of the full-section tunnel boring machine. It is mainly responsible for rock breaking, slag discharge and stabilization of the front rock and soil. Its rock and soil excavation speed is the key to determining the full-section tunnel boring machine. The key to the construction efficiency of tunnel boring machines. However, due to the changeable geotechnical conditions of the tunnel, complex rock-machine interaction, and harsh construction environment, the cutterhead load has the characteristics of large amplitude, rapid change, and strong uncertainty, which can easily cause failure and instability of the cutterhead system, such as cutting ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/11
CPCE21D9/11
Inventor 贾连辉杨旭郑永光郑博詹晨菲杜旭峰
Owner CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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