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Fast-assembly shield tunneling machine cutter head and cutter changing method of shield tunneling machine cutter head

A technology of shield cutter head and quick installation, which is applied in the field of shield machines, can solve the problems of occupation time, long replacement operation time, and overall settlement of shield machines, so as to reduce overall settlement, shorten downtime, and shorten tool replacement the effect of time

Pending Publication Date: 2021-11-02
CHINA RAILWAY DEV INVESTMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] It can be known from the tool replacement steps that the bolts for fixing the props need to be tightened twice. The bolts of each tool have large specifications and a large number. Whether it is tightening or loosening, it takes a long time and the operation is difficult, which is the most time-consuming operation in the replacement operation. step in time
Long replacement operation time and long shutdown time will easily cause the overall settlement of the shield machine, causing stratum and surface settlement, which is not conducive to smooth construction

Method used

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  • Fast-assembly shield tunneling machine cutter head and cutter changing method of shield tunneling machine cutter head
  • Fast-assembly shield tunneling machine cutter head and cutter changing method of shield tunneling machine cutter head
  • Fast-assembly shield tunneling machine cutter head and cutter changing method of shield tunneling machine cutter head

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Such as Figure 1 to Figure 8 As shown, this embodiment provides a quick-install shield cutterhead, which includes a cutterhead body 1 and a cutter 21 . The cutterhead body 1 is provided with a cutter seat groove 2 adapted to the handle of the cutter 21 . Four knife seat grooves 2 are provided, and the four knife seat grooves 2 are evenly distributed along the circumferential direction. A positioning rod 19 , a first clamping arm 3 and a second clamping arm 4 for clamping the handle of a knife are provided in each of the tool seat grooves 2 . The first clamping arm 3 and the second clamping arm 4 are respectively located on opposite sides of the knife seat groove 2, and the first clamping arm 3 is fixedly connected with a group of telescopic rods 15 in the knife seat groove 2, and the second clamping arm 4 is fixedly connected with another set of telescopic rods 15 in the tool seat groove 2; two positioning rods 19 are provided, and the two positioning rods 19 are tel...

Embodiment 2

[0048] Embodiment 2 provides a tool changing method for a shield machine cutter head, which is applied to the quick-install shield machine cutter head of embodiment 1. The pressure sensor and the solenoid valve are respectively electrically connected to the operation panel of the shield machine, including the following step:

[0049] S1: The operation panel retracts the telescopic rod group and the positioning rod of the knife seat groove, and the original tool is pulled out from the knife seat groove;

[0050] S2: The handle of the new tool is inserted into the groove of the tool seat, and the lower end surface of the handle is pressed against the pressure sensor;

[0051] S3: When the pressure value detected by the pressure sensor is not less than the pressure value set by the operation panel, the operation panel drives the solenoid valve to drive the corresponding positioning rod to insert into the corresponding positioning hole;

[0052] S4: The operation panel makes the ...

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PUM

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Abstract

The invention discloses a fast-assembly shield tunneling machine cutter head, a cutter and a cutter changing method of the shield tunneling machine cutter head. The fast-assembly shield tunneling machine cutter head comprises a cutter head body and the cutter. The cutter head body is provided with a cutter holder groove matched with a cutter handle of the cutter; positioning rods for clamping the cutter handle, a first clamping arm and a second clamping arm are arranged in the cutter holder groove; the first clamping arm and the second clamping arm are located on the two opposite sides of the cutter holder groove respectively, the first clamping arm is fixedly connected with one set of telescopic rods in the cutter holder groove, and the second clamping arm is fixedly connected with the other set of telescopic rods in the cutter holder groove. The number of the positioning rods is two, and the two positioning rods are connected to the other two sides of the cutter holder groove in a telescopic mode respectively. Positioning holes in one-to-one correspondence with the two positioning rods are formed in the two opposite side faces of the cutter handle of the cutter correspondingly, the first clamping arm and the second clamping arm are pushed to be close to each other through the two telescopic rods at the same time, and then the cutter handle is clamped in the cutter holder groove. According to the fast-assembly shield tunneling machine cutter head, the cutter and the cutter changing method of the shield tunneling machine cutter head, the operation of screwing a bolt is omitted, the time for replacing the cutter is greatly shortened, and the downtime is shortened.

Description

technical field [0001] The invention relates to the technical field of shield tunneling machines, in particular to a quick-installation shield tunneling cutter head, a tool and a tool changing method for the shield machine cutter head. Background technique [0002] A shield machine is a tunnel boring machine that uses the shield method. The cutter head of the shield machine is a cutting disc body with multiple feeding grooves, which is located at the front of the shield machine and is used for cutting soil. A variety of knives are installed on the cutter head, including center knives, hob knives, scrapers, super dig knives, etc. All types of knives are detachably attached to the cutter head, as these knives wear and need to be replaced according to wear. [0003] The tool holders of most tools are detachably connected to the cutter head through bolts, such as scrapers, super digging tools and other tools that do not rotate themselves. The specific replacement steps mainly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/08
CPCE21D9/08
Inventor 徐赞陈军华杨伟伟李明辉顾章和汤玉鹏王志博
Owner CHINA RAILWAY DEV INVESTMENT CO LTD