Device for high-precision measurement of slab staggering in and between lining segment rings

A high-precision technology for lining segments, which is applied to measuring devices, mechanical measuring devices, and mechanical devices, etc., can solve the problems of large measurement errors, inability to position correctly, and low accuracy of segment misalignment, and achieve high precision and measurement accuracy. Effortless process, accurate measurement of environmental effects

Active Publication Date: 2021-03-16
ZHENGZHOU NO 1 CONSTR ENG GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The technical problem mainly solved by the present invention is to provide a device for accurately measuring the misalignment of shield segments, and install linear bases and arc-shaped bases on both sides of the measuring device for precise positioning, avoiding the problem that conventional measurement cannot be correctly positioned, and at the same time Guide pulleys are installed on the base and the probe, which can slide along the segment wall to achieve continuous measurement, thus solving the current technical problems such as large error, low precision and low efficiency in segment staggered measurement

Method used

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  • Device for high-precision measurement of slab staggering in and between lining segment rings
  • Device for high-precision measurement of slab staggering in and between lining segment rings
  • Device for high-precision measurement of slab staggering in and between lining segment rings

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Experimental program
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Effect test

Embodiment 1

[0043] Embodiment 1: In the process of tunnel engineering construction, the application of shield construction technology is more and more extensive. During shield tunnel construction, the tunnel wall needs to be reinforced with prefabricated concrete segments. The diameter of the tunnel is usually about 100 meters, and a large number of lining ring segments are required to be assembled to form the tunnel wall. Due to factors such as small-radius curved section construction and shield machine posture correction, segment misalignment will inevitably occur. It is necessary to measure the error between assembled segments in order to judge whether the segment assembly error is within the specified range.

[0044] Most of the existing measurement methods for segment misalignment use general steel rulers, square rulers or vernier rulers for measurement. Due to the segment structure, the visual perception of misalignment is relatively large, and it is difficult for staff to measure C...

Embodiment 2

[0054] Embodiment 2: During the measurement process, the inventor found that after the base guide wheel 6 was installed on the linear base 4 and the arc base 5, the contact surface was reduced. The device of platform is easy to topple over when keeping vertical upright, therefore, further install two groups such as Figure 5 In the double-row wheel structure shown, two sets of double-row wheels provide four fulcrums during use, and use the four fulcrums to contact the segment to form a contact plane, and the measuring device is vertically erected.

[0055] When in use, as long as the four fulcrums on the linear base 4 and the arc-shaped base 5 are close to the segment at the same time, the measuring device can be guaranteed to be in a vertical state. During the moving measurement process, the four fulcrums are always in contact with the segment at the same time. The synchronous movement avoids the problem of frequent adjustment and alignment, and can further improve the measur...

Embodiment 3

[0057] Embodiment 3: Long-term use of the measuring device will cause errors due to objective reasons such as wear and tear, and it is necessary to perform fine-tuning and zeroing operations for processing. In order to solve this problem, as Figure 9-10 The shown base guide wheel 6 includes a wheel seat 61, a fine-tuning screw 62 and a guide wheel. The guide wheel is installed through a rotating shaft in the wheel seat 61. The upper top surface of the wheel seat 61 is provided with a through hole, and the fine-tuning screw 62 is installed by a snap spring. The method fine adjustment screw 62 can be independently rotated relative to the wheel base 61 .

[0058] like Figure 7-8 The shown linear base 4 and the bottom of the slot of the arc base 5 are provided with screw holes, the wheel base 61 is matched with the slot, and the wheel base 61 is installed in the slot through the fine-tuning screw 62 and the screw hole at the bottom of the slot. With the rotation of the fine-tun...

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Abstract

The invention discloses a device for high-precision measurement of slab staggering in and between lining segment rings. The device comprises a ruler body, an electronic measurement device and a probe,the electronic measurement device is installed on the back face of the ruler body and fixedly equipped with the probe, convex edges are arranged on the two sides of the ruler body, and a linear baseand an arc-shaped base are installed on the convex edge located at one end of a positioning block through pin shafts. The linear base and the arc-shaped base are arranged on the two sides of the rulerbody respectively, at least two clamping grooves are formed in the linear base and the arc-shaped base respectively, base guide wheels are installed in the clamping grooves through pin shafts, and atrack wheel is installed at the extending ends of the probe. Positioning is provided for measurement through the installed linear base and the arc-shaped base, the base guide wheels and the track wheel move along segments to achieve continuous measurement, measurement values are displayed through an electronic displayer on the ruler body, the segment slab staggering error value can be accurately measured, a more accurate measurement result is provided, when the device is used for measuring segment slab staggering, the measurement is convenient, the operation is simple, the precision is high, and the tool manufacturing is simple.

Description

technical field [0001] The invention relates to the field of quality control of lining ring segment assembly in shield tunneling and the field of segment monitoring within and between segment rings during acceptance of formed tunnels, in particular to a high-precision measuring device for lining segment ring and inter-ring displacement . Background technique [0002] With the continuous development and utilization of urban underground space resources, the application of shield construction technology is becoming more and more extensive in the process of tunnel engineering construction. During the construction of shield tunnels, due to factors such as improper control of lining ring segment assembly process, construction of small-radius curved sections, and correction of shield machine posture, it is inevitable that segments will be misplaced. (GB50446-2017) requirements, the allowable deviation of segment assembly is shown in Table 1. The permissible deviation of the formi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B5/00
CPCG01B5/00Y02E30/30
Inventor 丁保华卫星翟永亮刘建华秦晓朋陈伟冯林锋武东阁张继永严福星樊琳张峰郅明豫邓建超常跃华贾龙杰刘新
Owner ZHENGZHOU NO 1 CONSTR ENG GRP
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