Sensor installation assembly applied to advanced geological forecast

Abstract

The utility model relates to an improved technology for placing an advanced geological forecast sensor in the tunneling process of a shield tunneling machine, in particular to a sensor mounting assembly applied to advanced geological forecast. The utility model relates to a duct piece sensor, which can solve the problem that a sensor is easy to fall off when the sensor is connected to the duct piece by adopting a solid glue pasting method in the past, effectively reinforces the fixation of the sensor on the duct piece, prevents the sensor from sliding off due to poor fixation, and further remarkably improves the stability and accuracy of data. The sensor body is provided with a square sensor end part, and the square ring is formed by connecting four rectangular side plates end to end; the outer side of the end part of the sensor is provided with the square ring, one side wall of the square ring is provided with an insertion opening allowing the insertion sheet to pass through, the inner end of the insertion sheet is provided with a baffle plate attached to the inner wall of the square ring, and the baffle plate and the insertion sheet are T-shaped.

Description

TECHNICAL FIELD

[0001] The utility model relates to an improved technology of placing an advanced geological prediction sensor during the tunneling process of a shield machine, in particular to a sensor mounting assembly applied to advanced geological prediction. BACKGROUND

[0002] Advanced geological prediction is very important for the tunneling of a shield machine. It can detect complex underground geological conditions in advance, avoid sudden water inrush, mud gushing and collapse disasters caused by unfavorable geological structures such as faults and karst caves during construction, and ensure construction safety. At the same time, by understanding geological information in advance, the damage of shield machine cutters due to unexpected hard strata can be prevented, the construction progress can be ensured not to be disturbed by sudden geological problems, and the construction party can also optimize the construction scheme, reduce equipment maintenance cost and additional construction cost for dealing with unfavorable geology.

[0003] Through research, the inventor found that the geological prediction sensor has the following problems when fixed:

[0004] (1) In the past data collection practice, the work of laying sensors often faces many challenges. Traditionally, technicians often use solid glue to paste the sensor for installation. The specific operation is to directly adhere the sensor to the predetermined segment position with solid glue. However, this method has exposed significant problems in practical application. Especially when the laying position is in a cold and humid environment, pollutants such as mud, oil stains and water droplets often fall on the sensor and its fixed area, greatly affecting the adhesion effect of the solid glue. Due to the interference of these unfavorable factors, the sensor often falls off, which not only interrupts the continuity of data collection, but also brings additional burden and inconvenience to subsequent monitoring work.

[0005] (2) During long-term use of solid glue, its residues will gradually penetrate into the surface and gaps of the sensor. These residues are not only difficult to clean thoroughly, but also may cause corrosion or blockage to the precision components of the sensor, thereby seriously affecting the performance and accuracy of the sensor. In some cases, such damage is even irreversible, directly leading to the shortening of the service life of the sensor and the increase of replacement cost.

[0006] (3) The solid glue pasting method also has some other limitations. For example, in scenarios where the sensor position needs to be frequently adjusted or maintained, the firmness of the solid glue becomes an obstacle, making disassembly and reinstallation both time-consuming and laborious. At the same time, the use of solid glue may also introduce additional environmental pollution risks, especially when dealing with waste sensors and solid glue residues, additional environmental protection measures need to be taken to avoid secondary pollution to the environment. CONTENT OF THE UTILITY MODEL

[0007] The utility model provides a sensor mounting assembly for advanced geological prediction, can solve the problem that the sensor is connected to the segment by the solid adhesive sticking method and is easy to fall off, effectively strengthens the fixation of the sensor on the segment, prevents the sensor from sliding due to poor fixation, and further significantly improves the stability and accuracy of data.

[0008] The utility model is realized through the following technical schemes:

[0009] A sensor mounting assembly for advanced geological prediction, comprising a sensor body, an insert piece and a square ring, the sensor body is provided with a square sensor end, the square ring is composed of four rectangular side plates connected head to tail;

[0010] The outer side of the sensor end is equipped with the square ring, one side wall of the square ring is provided with an insert opening allowing the insert piece to pass through, the inner end of the insert piece is provided with a baffle abutting against the inner wall of the square ring, and the baffle and the insert piece are in T shape.

[0011] Further, a rubber pad layer is arranged between the baffle and the sensor end.

[0012] Further, screw holes are arranged on the side plates on the left and right sides of the insert opening respectively, and the screw holes realize the fixation of the square ring and the sensor end through fixing bolts.

[0013] Further, the front surface of the side plate is provided with a guide groove in communication with the insert opening.

[0014] Further, the insert piece is made of stainless steel, polytetrafluoroethylene or carbon fiber composite material.

[0015] Further, the size of the sensor end is 50mm in length, 50mm in width and 20mm in height.

[0016] The utility model has the following beneficial effects compared with the prior art:

[0017] 1. The insert piece is inserted into the insert opening from the inner side of the square ring, the connection of the square ring and the insert piece is realized through the cooperation of the baffle, then the square ring is sleeved on the sensor end, and finally the insert piece is inserted into the gap in the segment,

[0018] Compared with the traditional solid adhesive sticking method, the utility model is more stable, durable, convenient to maintain and firmly installed: the insert piece is tightly embedded in the fine gap of the segment, the firmness of the sensor is greatly enhanced, the resistance to external force interference is strong, and displacement loosening is effectively prevented. The corrosion resistance and wear resistance ensure long-term stable operation in humid, muddy, acidic and alkaline harsh environments. The plug-in design facilitates installation and disassembly, is beneficial to maintenance or replacement, reduces cost, and improves system operation efficiency;

[0019] 2. A rubber pad is arranged between the baffle and the end of the sensor, and the rubber pad also has a certain buffering effect, which can reduce the direct impact of the external environment on the sensor body, and further prolong the service life of the sensor;

[0020] 3. Screw holes are arranged on the side plates on the left and right sides of the socket, and the screw holes are fixed with the square ring and the end of the sensor through the fixing bolts, so that the stability of the connection between the square ring and the sensor body is ensured;

[0021] 4. A guide groove in communication with the socket is arranged on the front of the side plate, so that the installation process of the plug is extremely simple and efficient. When the plug is accurately inserted into the designed guide groove from the inside of the square ring, it will be closely matched with the internal fixing structure, and the stability and structural strength of the end of the sensor are further enhanced. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a side view of the sensor mounting assembly of the utility model;

[0023] Figure 2 is a perspective view of the sensor mounting assembly of the utility model;

[0024] Figure 3 is a top view of the square ring of the utility model;

[0025] Figure 4 is a schematic view of the plug of the utility model;

[0026] Figure 5 is a schematic view of the sensor mounting assembly inserted into the gap of the pipe piece of the utility model;

[0027] In the figure: 1, sensor body, 2, plug, 3, square ring, 4, socket, 5, baffle, 6, fixing bolt, 7, guide groove. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0029] In the description of the utility model, it is understood that the terms "front", "back", "upper", "lower", "left", "right" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0030] As shown in Figures 1-4 The embodiment discloses a sensor mounting assembly applied to advanced geological prediction, mainly including a sensor body 1, an insert piece 2 and a square ring 3 and the like structure, the sensor body 1 is provided with a square sensor end, the size of the sensor end is accurately designed as 50mm long, 50mm wide and 20mm high, to adapt to the demand of different application scenarios. The square ring 3 is composed of four rectangular side plates connected head to tail, the square ring 3 is used for assembling on the sensor end, a side wall in front of the square ring 3 is machined with an insert hole 4 allowing the insert piece 2 to pass through. The square ring 3 not only provides a clear positioning point for installation, but also provides a stable basis for subsequent embedding of the insert piece 2. Of course, in order to adapt to the size of different pipe piece gaps, the square ring 3 and the subsequent insert piece 2 can also be customized to ensure the best fixing effect.

[0031] A baffle 5 is connected to the inner end of the insert piece 2 in a welded manner, the baffle 5 can be attached to the inner wall of the square ring 3, and the baffle 5 and the insert piece 2 are in T shape. The insert piece 2 can be tightly riveted with the square ring 3 through the baffle 5, not only has sufficient strength and rigidity, can be tightly embedded in the pipe piece gap, prevent the sensor body 1 from moving or loosening in the use process, also because of its good corrosion resistance and wear resistance, ensure the long-term stable operation of the sensor in the humid, muddy and other harsh environments.

[0032] In order to reduce the direct impact of the external environment on the sensor body and further prolong the service life of the sensor, a rubber pad layer is arranged between the baffle 5 and the sensor end, and the rubber pad layer has a certain buffering effect.

[0033] Screw holes are machined on the side plates on the left and right sides of the insert hole 4 respectively, and the screw holes realize the fixation of the square ring 3 and the sensor end through fixing bolts 6. So as to realize that the square ring 3 is tightly connected with the sensor body, and a stable and reliable connection point is formed. This connection mode not only ensures the firmness of the square ring 3, but also provides additional support and protection for the sensor body 1. A guide groove 7 in communication with the insert hole 4 is arranged on the front side of the side plate in front of the square ring 3, and this design makes the installation process of the insert piece 2 extremely simple and efficient. When the insert piece 2 is accurately inserted into the designed guide groove 7 from the inside of the square ring 3, it will tightly cooperate with the internal fixing structure, further enhancing the stability and structural strength of the sensor end.

[0034] Furthermore, the various harsh environments that may be encountered during tunnel excavation, such as high temperature, high pressure, high humidity, and corrosive gases, must be fully considered during installation. These environmental factors will have a significant impact on the performance of insert 2, so the selected materials should have good environmental adaptability and be able to maintain stable performance under extreme conditions.

[0035] Aluminum-magnesium alloy insert 2 is suitable for applications with strict weight requirements, as well as good corrosion resistance and thermal conductivity, providing sufficient strength and stability while reducing weight. Polytetrafluoroethylene (PTFE) insert 2 offers excellent insulation and a low coefficient of friction, making it suitable for extremely corrosive environments and maintaining stable performance over long periods. Carbon fiber composite insert 2 is suitable for applications requiring high stress and vibration resistance with strict weight control, providing superior mechanical properties. These insert 2 materials each have their own characteristics and are suitable for different environments and needs; the selection should be based on a careful consideration of the specific project requirements.

[0036] like Figure 5 As shown, taking the installation of sensors on shield tunnel segments as an example, the sensors need to be placed at 2m intervals on both sides of the tunnel, facing the direction of excavation. The first sensor is installed starting from the segment after the segment column is assembled, and the next sensor is installed at 2m intervals. The specific operation steps are as follows: first, insert the insert 2 into the socket 4 from the inside of the square ring 3, and connect the square ring 3 and the insert 2 through the cooperation of the baffle 5. Then, put the square ring 3 on the end of the sensor, and finally insert the insert 2 into the gap of the segment.

[0037] Compared to traditional solid adhesive bonding methods, this method offers greater stability, durability, ease of maintenance, and secure installation: the insert 2 is tightly embedded in the narrow gaps of the tube segment, significantly enhancing the sensor's robustness, providing strong resistance to external interference, and effectively preventing displacement and loosening. Its corrosion and wear resistance ensures long-term stable operation in harsh environments such as dampness, mud, and acid / alkali conditions. The pluggable design facilitates installation and disassembly, simplifying maintenance or replacement, reducing costs, and improving system operating efficiency.

Claims

1. A sensor mounting assembly for use in advanced geological prediction, characterised in that, The sensor comprises a sensor body, a plug and a square ring, the sensor body is provided with a square sensor end, and the square ring is composed of four rectangular side plates connected head to tail; The square ring is assembled on the outside of the sensor end, one side wall of the square ring is provided with a plug hole allowing the plug to pass through, the inner end of the plug is provided with a baffle abutting against the inner wall of the square ring, and the baffle and the plug are in T shape.

2. The sensor mounting assembly for use in advanced geological prediction according to claim 1, characterized in that, A rubber pad is arranged between the baffle and the sensor end.

3. The sensor mounting assembly for use in advanced geological prediction according to claim 2, characterized in that, Screw holes are arranged on the side plates on the left and right sides of the plug hole respectively, and the square ring and the sensor end are fixed through the screw holes and fixing bolts.

4. The sensor mounting assembly for use in advanced geological prediction according to claim 1, characterized in that, The front of the side plate is provided with a guide groove in communication with the plug hole.

5. The sensor mounting assembly for use in advanced geological prediction according to any one of claims 1-4, characterized in that, The plug is made of stainless steel, polytetrafluoroethylene or carbon fiber composite material.

6. The sensor mounting assembly for use in advanced geological prediction according to any one of claims 1-4, characterized in that, The size of the sensor end is 50mm in length, 50mm in width and 20mm in height.

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