Shield tunnel joint deformation monitoring device

Abstract

The utility model relates to a shield tunnel joint deformation monitoring device, which comprises a laser transmitter and a laser receiver, and the laser transmitter and the laser receiver are respectively mounted on two segments on two sides of a joint. The laser transmitter and the laser receiver are located in the two shells respectively, the two shells are both fixedly connected with the duct piece, the opposite ends of the two shells are closed, the opposite ends of the two shells are open so that the laser receiver can receive laser signals, the opposite ends of the two shells are connected through a soft film, and the soft film is located at a seam. According to the device for monitoring the deformation of the joint by using the laser, the characteristic that the laser is linear is utilized, and when the joint is deformed, pipe pieces on the two sides of the joint can generate relative displacement, so that the receiving of the laser can be destroyed. And in order to enhance the accuracy of laser receiving, a soft film for isolating the external environment is arranged on a laser transmission path, so that external light pollution and dust pollution are avoided.

Description

Technical Field

[0001] The utility model relates to the field of tunnel segment joint deformation monitoring, in particular to a shield tunnel joint deformation monitoring device. Background Art

[0002] The formation of a shield tunnel includes multiple segments, and the pressure on the segments is complex, including lateral pressure coefficient, overload, unloading, and soil micro-disturbance grouting, etc., so different deformations will be formed at the segment joints. Joint deformation can lead to rapid structural damage and cause collapse when the tunnel leaks seriously. Therefore, in addition to enhancing the anti-deformation capacity of the joints during construction, it is also necessary to detect the joints in order to find and repair them in time to avoid irreversible consequences. Utility Model Content

[0003] The purpose of the present application is to provide a shield tunnel joint deformation monitoring device, aiming to solve the problems existing in the prior art.

[0004] The embodiment of the present application provides a shield tunnel joint deformation monitoring device, the detection device includes a laser transmitter and a laser receiver, the laser transmitter and the laser receiver are respectively installed on two pipe segments on both sides of the joint, and the laser receiver receives the laser emitted by the laser transmitter on the other side of the joint; the laser transmitter and the laser receiver are respectively located in two shells, the two shells are fixedly connected to the pipe segments, the opposite ends of the two shells are closed, and the facing ends of the two shells are open so that the laser receiver receives the laser signal, the facing ends of the two shells are connected by a soft film, and the soft film is located at the joint; the width of the soft film is greater than the distance between the two shells so that a return bend is formed on the soft film; the soft film is opaque.

[0005] Furthermore, the shell is semi-cylindrical, the bottom of the shell is fixedly connected to a bottom plate, and the laser transmitter or laser receiver is mounted on the bottom plate.

[0006] Furthermore, the facing ends of the shell are fixedly connected with a shell joint, which is semi-cylindrical and consists of an outer layer and an inner layer. The inner diameter of the inner layer is larger than the inner diameter of the shell. There is a gap between the outer layer and the inner layer to form a slot. The outer layer and the inner layer are correspondingly provided with mounting holes. The soft membrane is inserted into the slot, and the rivet passes through the soft membrane and is fixed in the mounting hole to fix the soft membrane to the shell joint.

[0007] Furthermore, a transversely extending connecting piece is fixedly connected to the outer side of the shell, and the connecting piece is fixedly connected to the pipe sheet.

[0008] Furthermore, the material of the soft film is silicone.

[0009] The beneficial effects of the utility model are as follows: the utility model proposes a device for monitoring joint deformation using laser, and using the straight line characteristic of laser, when the joint is deformed, the pipe segments on both sides of the joint will be relatively displaced, thereby destroying the reception of the laser and achieving a monitoring effect. In order to enhance the accuracy of laser reception, a soft film is provided on the laser transmission path to isolate the external environment, thereby avoiding external light pollution and dust pollution, thereby avoiding false alarms in monitoring and improving the accuracy of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0011] Figure 2 It is a schematic diagram of the overall structure of the connection between the two shells.

[0012] Figure 3 This is a schematic diagram of the overall structure of one of the shells.

[0013] In the figure:

[0014] 1. Shell; 2. Tube segment; 3. Soft membrane; 4. Joint; 5. Return bend; 6. Shell joint; 7. Bottom plate; 8. External layer; 9. Internal layer; 10. Slot; 11. Mounting hole; 12. Rivet; 13. Connecting piece. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] like Figure 1 A shield tunnel joint deformation monitoring device is shown, the detection device includes a laser transmitter and a laser receiver, the laser transmitter and the laser receiver are respectively installed on the two pipe segments 2 on both sides of the joint 4, and the laser receiver receives the laser emitted by the laser transmitter on the other side of the joint 4. Under normal circumstances, the laser receiver receives the laser signal, and the controller outputs a "normal" judgment result. When the pipe segment 2 is deformed such as opening and misalignment, the laser is deflected so that the laser receiver cannot receive the laser, and the controller outputs a "deformation" judgment result, thereby monitoring the deformation of the pipe segment 2 at the tunnel joint.

[0017] The laser transmitter and the laser receiver are respectively located in two shells 1, and the two shells 1 are fixedly connected to the pipe segment 2. The opposite ends of the two shells 1 are closed, and the facing ends of the two shells 1 are open so that the laser receiver receives the laser signal. The facing ends of the two shells 1 are connected by a soft film 3, and the soft film 3 is located at the joint 4. Therefore, the two shells 1 and the laser devices installed inside can move relative to each other following the pipe segment 2, and the two shells 1 always remain connected. The soft film 3 can isolate the external environment, ensure that the internal laser environment is pure, and the received laser is not affected.

[0018] like Figure 2 As shown, the width of the soft film 3 is greater than the distance between the two shells 1, so that a bend 5 is formed on the soft film 3, which can maximize the relative displacement of the tube segment 2. The material of the soft film 3 is silicone, which makes the soft film 3 soft, deformable and elastic, and isolates the light, dust and other pollution from the external environment. The soft film 3 is opaque, which can ensure the internal laser reception is accurate.

[0019] In this embodiment, the housing 1 is semi-cylindrical, and the facing ends of the housing 1 are fixedly connected with a housing joint 6, which is semi-cylindrical. In other embodiments, the housing 1 and the housing joint 6 may be square.

[0020] like Figure 3 As shown, the bottom of the shell 1 is fixedly connected with a bottom plate 7, and the laser transmitter or laser receiver is mounted on the bottom plate 7. The bottom plate 7 may not extend to the shell joint 6 to facilitate assembly. The shell joint 6 is composed of an outer layer 8 and an inner layer 9. The inner diameter of the inner layer 9 is larger than the inner diameter of the shell 1. There is a gap between the outer layer 8 and the inner layer 9 to form a slot 10. The outer layer 8 and the inner layer 9 are correspondingly provided with mounting holes 11. The soft film 3 is inserted into the slot 10, and the rivet 12 passes through the soft film 3 and is fixed in the mounting hole 11 to fix the soft film 3 to the shell joint 6.

[0021] A transversely extending connecting piece 13 is fixedly connected to the outer side of the shell 1 . The connecting piece 13 is fixedly connected to the tube sheet 2 . The shell 1 is fixed to the tube sheet 2 by fixing the connecting piece 13 to the tube sheet 2 .

[0022] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A shield tunnel joint deformation monitoring device, characterized in that: The monitoring device comprises a laser transmitter and a laser receiver, which are respectively mounted on two pipe segments on both sides of the joint, and the laser receiver receives the laser emitted by the laser transmitter on the other side of the joint; the laser transmitter and the laser receiver are respectively located in two shells, and both shells are fixedly connected to the pipe segments, the opposite ends of the two shells are closed, and the facing ends of the two shells are open so that the laser receiver receives the laser signal, and the facing ends of the two shells are connected by a soft film, and the soft film is located at the joint; the width of the soft film is greater than the distance between the two shells so that a bend is formed on the soft film; The soft film is light-proof.

2. The shield tunnel joint deformation monitoring device according to claim 1 is characterized in that: The shell is semi-cylindrical, the bottom of the shell is fixedly connected with a bottom plate, and the laser transmitter or laser receiver is mounted on the bottom plate.

3. The shield tunnel joint deformation monitoring device according to claim 1 is characterized in that: The facing ends of the shell are fixedly connected with a shell joint, which is semi-cylindrical and consists of an outer layer and an inner layer. The inner diameter of the inner layer is larger than the inner diameter of the shell. There is a gap between the outer layer and the inner layer to form a slot. The outer layer and the inner layer are correspondingly provided with mounting holes. The soft membrane is inserted into the slot, and the rivet passes through the soft membrane and is fixed in the mounting hole to fix the soft membrane to the shell joint.

4. The shield tunnel joint deformation monitoring device according to claim 1 is characterized in that: The outer side of the shell is fixedly connected with a transversely extending connecting piece, and the connecting piece is fixedly connected to the pipe sheet.

5. The shield tunnel joint deformation monitoring device according to claim 1 is characterized in that: The material of the soft film is silica gel.

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