Shield tail brush dynamic sealing performance testing device and testing method thereof

A technology of dynamic sealing and testing device, which is applied in liquid/vacuum measurement for liquid tightness, and by detecting the appearance of fluid at the leakage point, etc., can solve the problem of low test accuracy of the pressure bearing capacity of the shield tail brush, and achieve accurate The effect of data support

Active Publication Date: 2020-09-25
CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the deficiencies in the above-mentioned background technology, the present invention proposes a shield tail brush dynamic sealing test device and its testing method, which solves the problem of low test accuracy of the shield tail brush pressure bearing capacity in the prior art

Method used

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  • Shield tail brush dynamic sealing performance testing device and testing method thereof
  • Shield tail brush dynamic sealing performance testing device and testing method thereof
  • Shield tail brush dynamic sealing performance testing device and testing method thereof

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Experimental program
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Embodiment 3

[0041] Embodiment 3, a kind of test method of dynamic sealability testing device of shield tail brush, the steps are as follows:

[0042] S1: Assemble the test device so that the inner cylinder 2 is located in the outer cylinder 1, and the side wall of the outer cylinder 1 and the side wall of the inner cylinder 2 form a sealed grease chamber 14; A sealed pressurized chamber 15 is formed at the rear of the cylinder body 2 ; the shield tail brush 11 is located in the sealed grease chamber 14 . Wherein, the steps of test device assembly are as follows:

[0043] S1.1: Fix the mounting frame 9 at the designated position;

[0044] S1.2: Install the supporting beam 4 and the hinged supporting frame 8 on the mounting frame 9 in sequence;

[0045] S1.3: Install the upper radial telescopic oil cylinder 501 and the lower radial telescopic oil cylinder 502 on the support beam 4;

[0046] S1.4: Connect the inner cylinder 2 to the upper radially telescopic oil cylinder 501 and the lower...

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Abstract

The invention discloses a shield tail brush dynamic sealing performance testing device and a testing method thereof, and solves the problem of low test precision of the pressure bearing capacity of ashield tail brush in the prior art. The device comprises a supporting cross beam, an outer cylinder and an inner cylinder are arranged on the supporting cross beam, the inner cylinder is located in the outer cylinder, and the outer cylinder is connected with the supporting cross beam through a gap adjusting mechanism. The inner cylinder is connected with the supporting cross beam through an extrusion driving piece, and a shield tail brush is fixed to the inner wall of the outer cylinder and located between the outer cylinder and the inner cylinder. According to the invention, the actual tunneling state of a shield tunneling machine can be restored to a greater extent, the influence of different types of grease on the sealing performance of the shield tail brush and the sealing performancetest of the shield tail brush are tested, and more accurate data support is provided for shield construction.

Description

technical field [0001] The invention relates to the technical field of shield machine construction, in particular to a device for testing the dynamic sealing performance of shield tail brushes and a testing method thereof. Background technique [0002] With the development of shield tunnels towards large diameters and large buried depths, at the same time, due to my country's vast territory and diverse geological changes, strata such as broken zones and high water permeability require shield machines to bear more and more pressure. For shield tunneling The pressure bearing capacity of the tail brush has also put forward higher and higher requirements. It is necessary to design a dynamic tail brush pressure-bearing capacity test bench that is closer to the actual working conditions of the shield, capable of simulating various dynamic changes between the tail brush and the segments in the actual work of the shield. By simulating the actual working conditions of the tail brush,...

Claims

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Application Information

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IPC IPC(8): G01M3/04
CPCG01M3/04
Inventor 冀庆恩张鹏豪叶超贺开伟郑帅超徐纯杰翟聪崔俊峰郑亮奎
Owner CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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