Test device and method for measuring wear coefficient of shield cutter in river-crossing sea sand layer

A wear coefficient, shield tool technology, applied in the direction of testing wear resistance, etc.

Pending Publication Date: 2020-06-19
BEIJING JIAOTONG UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Sand layers are very common in cross-river and sea shield crossing projects. In sand layers, the amount of quartz content determines th...

Method used

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  • Test device and method for measuring wear coefficient of shield cutter in river-crossing sea sand layer
  • Test device and method for measuring wear coefficient of shield cutter in river-crossing sea sand layer

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Embodiment Construction

[0034] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0035] Those skilled in the art will understand that unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the word "comprising" used in the description of the present invention refers to the presence of said features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, Integers, steps, operations, elements, components, and / or groups thereof. It will be understoo...

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Abstract

The invention provides a test device and method for measuring the wear coefficient of a shield cutter in a river-crossing sea sand layer. The device comprises a test bench, a test material box, a model cutter head, a model cutter, a rotating speed sensor, a torque sensor, an air pump and a PLC control system, wherein the test bench is composed of four cylindrical stand columns, an upper top plate,a limiting movable plate, a bottom plate, a hydraulic drive motor fixing support and a base; a test material for simulating a river-crossing sea sand layer is contained in the test material box; themodel cutter is installed on the model cutter head; the air pump is connected to the test material box through an air conveying pipe to pressurize the test material box; and the rotating speed sensorand the torque sensor are connected with the PLC control system through data lines respectively. According to the method, the average value of the wear coefficients of the cutter under different quartz contents can be obtained, the relationship between the quartz contents and the wear coefficients of the cutter is fitted through the average value of the wear coefficients of different quartz contents, and the influence of the quartz contents in the river-crossing sea sand layer on cutter wear can be explored.

Description

technical field [0001] The invention relates to the technical field of tool detection, in particular to a test device and method for measuring the wear coefficient of a shield tool in cross-river and sea sand layers. Background technique [0002] Due to its unique characteristics of not being affected by the climate, stable traffic capacity, strong resistance to war damage, and no damage to shipping, it has increasingly become an important means of connection and traffic lifeline between cities, regions, and even countries. During the construction of shield tunnels across rivers and seas, it is difficult to avoid the problem of opening and changing tools caused by severe tool wear. However, the risk of underwater opening and changing tools is extremely high, which greatly increases construction costs and engineering risks. The cutting time and the risks brought by opening the warehouse and changing the cutting tool have become one of the important limiting factors restrictin...

Claims

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Application Information

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IPC IPC(8): G01N3/56
CPCG01N3/56
Inventor 袁大军吴俊陈健段怿欣金大龙李兴高王承震许丽群许亚楼王旭阳马川
Owner BEIJING JIAOTONG UNIV
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