A special automated monitoring point fixing device for tunnel segments

Abstract

This utility model belongs to the field of subway automated monitoring, and specifically discloses a special shield tunnel segment automated monitoring point fixing device. The technical solution includes: a pre-set installation groove inside the tunnel lining, with an L-shaped bracket embedded within the groove. The side of the L-shaped bracket is fixedly connected to the installation groove via T-bolt assemblies, and the prism side of the L-shaped bracket is detachably connected to a monitoring prism. This utility model has a simple structure, does not damage the tunnel segment structure, greatly improves safety, and allows for secondary reuse, saving material costs.

Description

Technical Field

[0001] This utility model belongs to the field of subway automated monitoring, and in particular relates to a special shield tunnel segment automated monitoring point fixing device. Background Technology

[0002] In subway automated monitoring projects, four monitoring prisms are typically embedded in the monitoring section (two in the track bed and two on the sidewalls of the tunnel segments). Currently, the monitoring points on both sides of the tunnel segments are often installed using expansion bolts drilled into holes. This method is inefficient and can cause irreversible damage to the segment structure. Over time, groundwater may enter the tunnel through the boreholes, affecting the segment's lifespan. To ensure both on-site operational efficiency and the safety of the tunnel segments, there is an urgent need to optimize the traditional installation method. Utility Model Content

[0003] To address the problems existing in the prior art, this utility model provides a special automated monitoring point fixing device for tunnel segments. This utility model has a simple structure, does not damage the segment structure, greatly improves safety, and the device can be reused, saving material costs.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a special shield tunnel segment automated monitoring point fixing device, including a pre-set installation groove in the pipeline, an L-shaped bracket embedded in the installation groove, the segment side of the L-shaped bracket being fixedly connected to the installation groove by a T-bolt assembly, and the prism side of the L-shaped bracket being detachably connected to the monitoring prism.

[0005] Furthermore, the L-shaped bracket is integrally formed, and at least one threaded hole is pre-set on the side of the tube of the L-shaped bracket, and an elongated hole is pre-set on the side of the prism of the L-shaped bracket.

[0006] Furthermore, the T-bolt assembly includes a T-bolt, a washer, and a nut. The bolt head of the T-bolt is embedded in the mounting groove, and the other end of the T-bolt passes through the threaded hole on the side of the tube segment and is threadedly connected to the nut.

[0007] Furthermore, the washer is located between the nut and the side of the tube segment.

[0008] The advantages of this utility model compared with the prior art are as follows.

[0009] 1. The present invention has high work efficiency. Traditional monitoring point installation requires drilling holes and embedding expansion bolts before fixing. The drilling depth needs to be determined according to the bolt length, and it is difficult to control the depth on site, which can easily lead to waste holes and low work efficiency. However, the fixing device of the present invention can be fixed simply by removing the waterproof rubber strip of the segment channel, which greatly improves the work efficiency.

[0010] 2. The fixing device of this utility model does not damage the tunnel segment structure. Traditional burial methods will cause irreversible damage to the tunnel segment and pose safety hazards to the tunnel segment structure. However, the fixing device of this utility model will not damage the tunnel segment structure, greatly improving safety. Moreover, the device can be reused twice, saving material costs. Attached Figure Description

[0011] The present invention will be further described below with reference to the accompanying drawings.

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] In the figure, 1 is an L-shaped bracket, 11 is the side of the prism, 12 is the side of the tube segment, 2 is a T-bolt assembly, 21 is a T-bolt, 22 is a washer, 23 is a nut, and 3 is a monitoring prism. Detailed Implementation

[0014] like Figure 1 As shown, a special automated monitoring point fixing device for tunnel segments includes a pre-installed mounting groove inside the tunnel. An L-shaped bracket 1 is embedded in the mounting groove. The L-shaped bracket 1 is formed by bending a 20cm long iron plate. The two sides of the L-shaped bracket 1 are a prism side 11 and a tunnel segment side 12, respectively. Both the prism side 11 and the tunnel segment side 12 are 10cm long. At least one M10 bolt hole is pre-installed on the tunnel segment side 12 for fixing the mounting groove; generally, two holes are sufficient. An elongated hole is pre-installed on the prism side 11 for connecting to a monitoring prism 3. The elongated hole allows for adjustment of the monitoring prism 3's position during installation according to site conditions.

[0015] The side 12 of the L-shaped bracket 1 is fixedly connected to the mounting groove via a T-bolt assembly 2. The T-bolt assembly 2 includes a T-bolt 21, a washer 22, and a nut 23. The bolt head of the T-bolt 21 is embedded in the mounting groove. The bolt head of the T-bolt 21 is made according to the mounting groove; the width of the bolt head is smaller than the width of the pipe mounting groove, while its length is greater than the width of the pipe mounting groove. During installation, the T-bolt 21 is first inserted into the pipe mounting groove, and then rotated to engage the bolt head along its length within the pipe mounting groove.

[0016] The other end of the T-bolt 21 passes through the threaded hole on the side 12 of the tube segment and is threadedly connected to the nut 23. The washer 22 is located between the nut 23 and the side 12 of the tube segment. In this way, the side 12 of the tube segment of the L-shaped bracket 1 is fixedly connected to the mounting groove by the T-bolt assembly 2.

[0017] The connection between the prism side 11 of the L-shaped bracket 1 and the monitoring prism 3 is achieved using a bolt and nut assembly 23. The bolt passes through the elongated hole and the mounting hole on the monitoring prism 3 base before being connected to the nut 23. The position of the monitoring prism 3 can be adjusted appropriately according to the site conditions, and fine-tuning can be achieved by adjusting the position of the bolt in the elongated hole.

[0018] The pipe installation groove in this invention is pre-drilled during the segment production process and sealed with waterproof tape. If monitoring points or other equipment need to be installed on the side wall of the segment later, they can be directly embedded in the pre-drilled groove. The on-site operation process for the monitoring point is as follows: First, use a blade or scissors to remove the waterproof tape from the pre-drilled pipe installation groove; then, use the monitoring point T-shaped fixing device and T-bolts of this invention to fix it to the side wall of the segment.

[0019] Traditional drilling installation methods can cause irreversible damage to the tunnel segments. However, the fixing device of this invention uses bolt connections, which will not damage the tunnel segment structure, greatly improving safety. Moreover, the device can be reused, saving material costs.

[0020] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A special shield segment automatic monitoring point fixing device, characterized in that: The system includes an installation groove pre-installed in the pipeline, in which an L-shaped bracket (1) is embedded. The pipe side (12) of the L-shaped bracket (1) is fixedly connected to the installation groove by a T-bolt assembly (2), and the prism side (11) of the L-shaped bracket (1) is detachably connected to the monitoring prism (3).

2. The special shield segment automatic monitoring point fixing device according to claim 1, characterized in that: The L-shaped bracket (1) is integrally formed. At least one threaded hole is pre-set on the tube side (12) of the L-shaped bracket (1), and an elongated hole is pre-set on the prism side (11) of the L-shaped bracket (1).

3. The special shield segment automatic monitoring point fixing device according to claim 2, characterized in that: The T-bolt assembly (2) includes a T-bolt (21), a washer (22), and a nut (23). The bolt head of the T-bolt (21) is embedded in the mounting groove, and the other end of the T-bolt (21) passes through the threaded hole on the side (12) of the tube segment and is threadedly connected to the nut (23).

4. The special shield segment automatic monitoring point fixing device according to claim 3, characterized in that: The washer (22) is located between the nut (23) and the side (12) of the tube segment.

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