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Shield tunneling machine tool apron suitable for use under complex spring area condition and manufacturing method

A manufacturing method and technology of shield machine, applied in the field of shield machine, can solve the problems of reducing the working efficiency and speed of the shield machine, unable to meet the requirements of anti-rust and anti-mud cake formation, corrosion of the shield machine tool seat, etc. Sludge cake, reduce friction coefficient, reduce the effect of running cost

Pending Publication Date: 2021-08-20
SHANDONG JIANZHU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The tool holder of the shield machine provides support for the tool of the shield machine during the working process. It not only bears the thrust and torque of the cutter head and the strong impact and wear of the rock on it, but also causes uneven force due to many uncertain factors. However, wear or corrosion, the complex underground environment will cause the shield machine tool seat to corrode, form mud cake, and reduce the working efficiency and speed of the shield machine
[0005] The existing shield machine tool holders cannot meet the anti-corrosion and mud cake formation in complex spring landforms, so it is necessary to design a shield machine tool holder suitable for complex spring landforms to overcome the above problems

Method used

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  • Shield tunneling machine tool apron suitable for use under complex spring area condition and manufacturing method
  • Shield tunneling machine tool apron suitable for use under complex spring area condition and manufacturing method

Examples

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Effect test

example 1

[0021] 1) Using laser shock strengthening technology, select the impact pressure of 1500Mpa and the spot diameter of 2mm to strengthen the end face of the shield machine tool holder; 2) Add deionized water / ethanol mixture to 54% molybdenum disulfide according to the ratio of 3:1 Perform high-pressure torsion to make powder. The high-pressure torsion parameters are axial pressure of 3Gpa, friction coefficient of 1, torsion speed of 0.1rad / s, and torsion time of 16s; 3) The above powder is fully mixed with 45% water-based epoxy resin and ball milled 10h to obtain mixed powder; 4) Add 5% titanium alloy, 26% nickel-copper alloy, and 17% alumina to 52% mixed powder, and use high-pressure torsion to obtain solid lubricating coating powder. The high-pressure torsion parameter is axial pressure of 3Gpa , the friction coefficient is 1, the torsion speed is 0.1rad / s, and the torsion time is 16s; 5) The powder is dried at 70°C for 7 hours, and the solid lubricating coating is coated on th...

example 2

[0023] 1) Using laser shock strengthening technology, select the impact pressure of 2000Mpa and the spot diameter of 3mm to strengthen the end face of the shield machine tool holder; 2) add deionized water / ethanol mixture to 54% molybdenum disulfide in a ratio of 3:1 Perform high-pressure torsion to make powder. The high-pressure torsion parameters are axial pressure of 3Gpa, friction coefficient of 1, torsion speed of 0.1rad / s, and torsion time of 16s; 3) The above powder is fully mixed with 45% water-based epoxy resin and ball milled 12h to obtain mixed powder; 4) Add 5% titanium alloy, 26% nickel-copper alloy, and 17% alumina to 52% mixed powder, and use high-pressure torsion to obtain solid lubricating coating powder. The high-pressure torsion parameter is axial pressure of 3Gpa , the friction coefficient is 1, the torsion speed is 0.1rad / s, and the torsion time is 16s; 5) The powder is dried at 80°C for 4 hours, and the solid lubricating coating is coated on the tool holde...

example 3

[0025] 1) Using laser shock strengthening technology, select the impact pressure of 3000Mpa and the spot diameter of 4mm to strengthen the end face of the shield machine tool holder; 2) add deionized water / ethanol mixture to 54% molybdenum disulfide according to the ratio of 3:1 Perform high-pressure torsion to make powder. The high-pressure torsion parameters are axial pressure of 3Gpa, friction coefficient of 1, torsion speed of 0.1rad / s, and torsion time of 16s; 3) The above powder is fully mixed with 45% water-based epoxy resin and ball milled 12h to obtain mixed powder; 4) Add 5% titanium alloy, 26% nickel-copper alloy, and 17% alumina to 52% mixed powder, and use high-pressure torsion to obtain solid lubricating coating powder. The high-pressure torsion parameter is axial pressure of 3Gpa , the friction coefficient is 1, the torsion speed is 0.1rad / s, and the torsion time is 16s; 5) The powder is dried at 70°C for 6 hours, and the solid lubricating coating is coated on th...

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Abstract

The invention discloses a shield tunneling machine tool apron suitable for use under a complex spring area condition and a manufacturing method, belongs to the field of shield tunneling machines, and aims to solve the problems that a shield tunneling machine cutter head in complex landform environments such as a spring area is prone to corrosion and wear, and mud cakes are prone to being formed and the like. The shield tunneling machine tool apron suitable for use under the complex spring area condition comprises a tool apron body and a solid lubricating coating, wherein the tool apron body is a detachable barrel-shaped tool apron. The manufacturing method comprises the step that the solid lubricating coating is prepared on the end face of the barrel-shaped tool apron through a laser cladding technology. The solid lubricating coating has the advantages of being good in lubricity, high in bearing capacity, convenient to use and the like. The end face of the tool apron is coated with the solid lubricating coating in a laser cladding mode and subjected to surface treatment, so that the friction coefficient of the end face of the tool apron and a rock stratum cutting object is reduced, and the disc wear rate is reduced; and meanwhile, muck removal is facilitated, and the mud formation phenomenon of the shield cutter head is reduced, so that the replacement and maintenance period of the shield cutter head is prolonged, the shield construction efficiency is improved, and the construction cost is reduced.

Description

technical field [0001] The invention belongs to the field of shield machines, and relates to a shield machine tool holder and a manufacturing method under complex spring conditions. Background technique [0002] As a commonly used excavation tool, the shield machine is widely used in engineering construction, mining and other operations. Underground construction of the shield machine will encounter various geological layers: geological layers with high content of highly abrasive substances such as quartz are more abrasive to the tool seat; rock layers rich in clay minerals such as montmorillonite and chlorite are easy to adhere to the tool seat. On the seat, the accumulation of slag is formed, and then gradually becomes a solid mud cake, which reduces the cutting ability of the tool. Whether it is the wear of the cutter head or the formation of mud cake, it is necessary to stop the machine to repair the cutter seat, thereby reducing the efficiency of shield tunneling and in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D10/00C22F3/00C23C24/10E21D9/06
CPCC21D10/005C22F3/00C23C24/103E21D9/06
Inventor 徐淑波孙海波张森倪菲任国成
Owner SHANDONG JIANZHU UNIV