A cable-stayed bridge concrete beam section positioning monitoring device

Abstract

The utility model discloses a kind of cable-stayed bridge concrete beam section positioning monitoring devices, including cable-stayed bridge body and protective shell, the protective shell is installed at the top of cable-stayed bridge body, the inside of the protective shell is equipped with sensor assembly for the data induction of concrete beam section, the outside of the protective shell is equipped with temperature adjusting assembly for the temperature regulation of sensor assembly, one end of the temperature adjusting assembly extends to the inside of protective shell, the outside of the protective shell is equipped with data collection component for data collection, one end of the data collection component extends to the inside of protective shell and sensor assembly connection The utility model is through temperature adjusting assembly to cable-stayed bridge open-air severe construction environment, the temperature adjusting assembly of device can refrigerate when high temperature, prevent sensor assembly overheating and cause measurement accuracy to drop, ensure that it is always in suitable temperature environment, overcome the drawbacks under the temperature change of traditional device, improve measurement accuracy.

Description

Technical Field

[0001] This utility model relates to the field of positioning and monitoring technology for concrete beam sections of cable-stayed bridges, specifically to a positioning and monitoring device for concrete beam sections of cable-stayed bridges. Background Technology

[0002] In the construction process of cable-stayed bridge concrete beams, accurate and real-time monitoring of the beam cross-section position and deformation is a core aspect of ensuring bridge structural safety and construction quality.

[0003] Chinese Patent No. CN212807003U discloses a hydrostatic leveling device for cable-stayed bridges based on BeiDou positioning. The device includes a stabilizing component and a hydrostatic level body. The stabilizing component is located on one side of the hydrostatic level body, and a mounting block is provided on the side of the mounting housing. Operators can use bolts to fix the mounting housing onto the surface of the cable-stayed bridge. The hydrostatic level body is housed inside the mounting housing, which protects it from direct exposure to the external environment and prevents damage. A data acquisition module is located inside the hydrostatic level body, which collects data on the cable-stayed bridge and transmits the data to the monitoring module. The monitoring module is electrically connected to the BeiDou positioning module, enabling the determination of locations where the cable-stayed bridge surface is tilted, eliminating the need for manual inspection and saving time.

[0004] The aforementioned patent also has some shortcomings. Cable-stayed bridge construction is usually carried out in an open environment, facing harsh weather conditions such as large temperature differences between day and night, strong winds, and rainfall. Under high temperature conditions, the liquid in the hydrostatic level may expand, affecting the measurement accuracy and causing the instrument to malfunction. Therefore, we need to propose a positioning and monitoring device for the concrete beam section of a cable-stayed bridge. Utility Model Content

[0005] The purpose of this invention is to provide a monitoring device for the positioning of concrete beam sections in cable-stayed bridges, in order to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a monitoring device for the positioning of concrete beam sections of a cable-stayed bridge, comprising a cable-stayed bridge body and a protective shell, wherein the protective shell is installed on the top of the cable-stayed bridge body;

[0007] The protective shell contains a sensor assembly for sensing data about the cross-section of the concrete beam.

[0008] A temperature regulating component for regulating the temperature of the sensor assembly is installed on the outside of the protective shell, and one end of the temperature regulating component extends into the inside of the protective shell.

[0009] A data collection component for collecting data is installed on the outside of the protective shell, and one end of the data collection component extends into the protective shell and connects to the sensor component;

[0010] The bottom of the protective shell is equipped with a power unit for driving the data collection component, and one end of the power unit is connected to the protective shell.

[0011] Preferably, the sensor assembly includes a high-precision displacement sensor, a strain sensor, a tilt sensor, and a micro-nano-level BeiDou high-precision positioning module. The high-precision displacement sensor, strain sensor, tilt sensor, and micro-nano-level BeiDou high-precision positioning module are all installed inside the protective shell. The high-precision displacement sensor, strain sensor, and tilt sensor are all tightly attached to the bottom surface of the inner side of the protective shell through shock-absorbing silicone pads.

[0012] Preferably, the temperature regulating component includes a thermoelectric cooler, a heat sink, an air inlet pipe, and a fan. The thermoelectric cooler and the fan are both located on the top of the protective shell. The air inlet of the fan is connected to the cold end of the thermoelectric cooler, and the air outlet of the fan is connected to one end of the air inlet pipe. The end of the air inlet pipe away from the air outlet of the fan extends into the interior of the protective shell. The hot end of the thermoelectric cooler is provided with heat dissipation fins and a fan. The heat sink is connected to the hot end of the thermoelectric cooler.

[0013] Preferably, the data collection component includes a universal joint flexible link, a first friction plate, a second friction plate, a spring, and a drive motor. The universal joint flexible link is arranged laterally and is installed outside the protective shell. One end of the universal joint flexible link extends into the protective shell and connects to the output end of the drive motor. The first friction plate is installed on the surface of the cable-stayed bridge body and is in contact with the surface. The surface of the first friction plate is connected to the bottom of the spring, and the top of the spring is connected to the universal joint flexible link.

[0014] Preferably, the second friction plate intersects perpendicularly with the side cross-section of the cable-stayed bridge body, one end of which is tightly attached to the cross-sectional surface of the cable-stayed bridge body, and the whole is inclined at a certain angle relative to the bridge deck. The second friction plate and the end of the universal joint flexible connecting rod away from the drive motor are connected in a stable and flexible manner through a specially designed connecting seat.

[0015] Preferably, the power assembly includes an electric slide table and a slide rail. The electric slide table is installed at the bottom of the protective housing, and the slide rail is located on both sides of the electric slide table. A sliding groove is provided at the bottom of the protective housing, and the sliding groove is adapted to the slide rail. The slider of the electric slide table is connected to the bottom of the protective housing.

[0016] Preferably, a controller is installed inside the protective shell, and a temperature sensor is installed inside the protective shell. The controller is electrically connected to the temperature sensor.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] This invention addresses the harsh outdoor construction environment of cable-stayed bridges by incorporating a temperature regulation component. In high-temperature conditions, the temperature regulation component can cool the sensor components, preventing overheating and a decrease in measurement accuracy. This ensures the sensor remains in a suitable temperature environment, overcoming the drawbacks of traditional devices under temperature variations and improving measurement accuracy. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the temperature regulation component of this utility model;

[0021] Figure 3 This is a schematic diagram of the internal structure of the data collection component of this utility model;

[0022] Figure 4 This is a schematic diagram of the universal joint flexible connecting rod structure of this utility model.

[0023] In the diagram: 1. Cable-stayed bridge body; 2. Protective shell; 3. High-precision displacement sensor; 4. Strain sensor; 5. Tilt sensor; 6. Micro-nano-level Beidou high-precision positioning module; 7. Semiconductor cooler; 8. Heat sink; 9. Air inlet pipe; 10. Fan; 11. Universal joint flexible connecting rod; 12. First friction plate; 13. Second friction plate; 14. Spring; 15. Drive motor; 16. Electric slide table; 17. Slide rail; 18. Slide groove; 19. Controller; 20. Temperature sensor; 21. Heat sink fins; 22. Fan. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figures 1-4This utility model provides a technical solution: a monitoring device for the positioning of concrete beam sections of a cable-stayed bridge, including a cable-stayed bridge body 1 and a protective shell 2. The protective shell 2 is installed on the top of the cable-stayed bridge body 1. As the object being monitored, the cable-stayed bridge body 1 will be subjected to various external loads such as vehicle traffic, wind force, and temperature changes during normal use, resulting in changes such as displacement, strain, and tilt. These changes will be sensed by the sensor components in the monitoring device. The protective shell 2 provides physical protection for the internal sensor components, controller 19, and other components, preventing them from being damaged by external environmental factors (such as rain, dust, collisions, etc.). It also plays a certain role in heat insulation and sound insulation, creating a relatively stable working environment for the internal components.

[0026] The protective shell 2 houses a sensor assembly for sensing data from the concrete beam cross-section. This assembly includes a high-precision displacement sensor 3, a strain sensor 4, an inclination sensor 5, and a micro-nano-level BeiDou high-precision positioning module 6. All three sensors are installed inside the protective shell 2 and are tightly fitted to the bottom surface of the shell 2 via shock-absorbing silicone pads. The high-precision displacement sensor 3 accurately measures the displacement changes of the cable-stayed bridge's concrete beam in various directions. This displacement data reflects the cable-stayed bridge under different loads. The strain sensor 4 measures the strain inside the concrete beam of the cable-stayed bridge. Strain refers to the degree of deformation of an object when it is subjected to force. By monitoring the strain, we can understand the stress state of the cable-stayed bridge structure and determine whether there are problems such as local stress concentration. The tilt sensor 5 is based on the principle of gravitational acceleration or gyroscope. By detecting the angle change of the sensor relative to the direction of gravity or inertial space, it outputs tilt angle data. The micro-nano-level Beidou high-precision positioning module 6 uses the Beidou satellite positioning system to accurately determine the geographical location and three-dimensional coordinates of the cable-stayed bridge, providing accurate spatial positioning information for the monitoring of the cable-stayed bridge, which facilitates the evaluation and analysis of the overall state of the cable-stayed bridge.

[0027] A temperature regulation component for regulating the temperature of the sensor assembly is installed on the outside of the protective shell 2. One end of the temperature regulation component extends into the interior of the protective shell 2. The temperature regulation component includes a thermoelectric cooler 7, a heat sink 8, an air inlet pipe 9, and a fan 10. The heat sink 8 dissipates the heat generated by the hot end of the thermoelectric cooler 7 to the external environment, ensuring the normal operating efficiency of the thermoelectric cooler 7. Both the thermoelectric cooler 7 and the fan 10 are located on the top of the protective shell 2. The thermoelectric cooler 7 achieves cooling and heating functions through the thermoelectric effect, regulating the temperature inside the protective shell 2 so that the sensor assembly and other components are in a suitable environment. The sensor operates in a suitable temperature environment to avoid excessively high or low temperatures affecting its measurement accuracy and lifespan. The air inlet of the fan 10 is connected to the cold end of the thermoelectric cooler 7, and the air outlet of the fan 10 is connected to one end of the air inlet pipe 9. The end of the air inlet pipe 9 away from the air outlet of the fan 10 extends into the interior of the protective shell 2. The hot end of the thermoelectric cooler 7 is equipped with heat dissipation fins 21 and a fan 22. The heat dissipation pipe 8 is connected to the hot end of the thermoelectric cooler 7. Under the action of the fan 10, air is drawn from the cold end of the thermoelectric cooler 7 into the air inlet pipe 9 and then transported to the interior of the protective shell 2 through the air inlet pipe 9. The fan 10 generates airflow, blowing cold air into the air inlet pipe 9 and simultaneously expelling hot air from the heat dissipation pipe 8. The heat dissipation fins 21 increase the heat dissipation area of ​​the hot end of the thermoelectric cooler 7, and the fan 22 accelerates the airflow around the hot end. Together, they improve the heat dissipation efficiency of the hot end.

[0028] A data collection assembly for data collection is installed on the outside of the protective shell 2. One end of the data collection assembly extends into the protective shell 2 and connects to the sensor assembly. The data collection assembly includes a universal joint flexible link 11, a first friction plate 12, a second friction plate 13, a spring 14, and a drive motor 15. The drive motor 15 provides power to the data collection assembly, driving the universal joint flexible link 11 to move, thereby causing the first friction plate 12 and the second friction plate 13 to contact the surface of the cable-stayed bridge body 1 and collect data. The universal joint flexible link 11 is arranged laterally and is installed on the outside of the protective shell 2. One end of the universal joint flexible link 11 extends into the protective shell 2 and connects to the output end of the drive motor 15. The universal joint flexible link 11 consists of a universal joint and a flexible link. The universal joint can rotate in different directions, while the flexible link has a certain degree of flexibility and can bend and deform during movement. The universal joint flexible link 11 is connected to the drive motor 15. The first friction plate 12 and the second friction plate 13 transmit the power of the drive motor 15 to the first friction plate 12 and the second friction plate 13, while allowing the first friction plate 12 and the second friction plate 13 to move at multiple angles within a certain range to adapt to the shape and deformation of the surface of the cable-stayed bridge body 1. The first friction plate 12 is installed on the surface of the cable-stayed bridge body 1 and is in close contact with the surface. The surface of the first friction plate 12 is connected to the bottom of the spring 14, and the top of the spring 14 is connected to the universal joint flexible link 11. When the first friction plate 12 is subjected to external force, the spring 14 will undergo compression or stretching deformation to generate elastic force, so that the first friction plate 12 always maintains close contact with the surface of the cable-stayed bridge body 1. When the cable-stayed bridge body 1 moves, a relative displacement will occur between the first friction plate 12 and the surface of the cable-stayed bridge. This relative displacement will be transmitted to the sensor assembly through the spring 14 and the universal joint flexible link 11, thereby realizing data collection.

[0029] The second friction plate 13 intersects perpendicularly with the side cross-section of the cable-stayed bridge body 1. One end of the second friction plate 13 is tightly attached to the cross-sectional surface of the cable-stayed bridge body 1, and the entire plate is tilted at a certain angle relative to the bridge deck. The end of the second friction plate 13 away from the drive motor 15 is connected to the universal joint flexible link 11 through a special connecting seat to achieve a stable and flexible connection. When the second friction plate 13 is displaced, deformed, or vibrates, these physical changes are transmitted to the part connected to the sensor assembly inside the protective shell 2 through the universal joint flexible link 11. After the universal joint flexible link 11 transmits the physical changes of the second friction plate 13, each sensor will detect the corresponding physical quantity and convert it into an electrical signal. The universal joint flexible link 11 has multi-angle rotation and a certain degree of flexibility, which can adapt to the complex deformation of the cable-stayed bridge and ensure accurate transmission of physical information.

[0030] The bottom of the protective shell 2 is equipped with a power assembly for driving the data collection components. The power assembly includes an electric slide table 16 and a slide rail 17. The electric slide table 16 is installed at the bottom of the protective shell 2 and drives the protective shell 2 to move along the slide rail 17, enabling the monitoring device to monitor the concrete beam cross-section at different locations of the cable-stayed bridge, thus expanding the monitoring range. The slide rail 17 is located on both sides of the electric slide table 16 and has a high-precision guide rail and slider matching structure. The slider of the electric slide table 16 slides on the slide rail 17, restricting the movement direction of the protective shell 2 so that it can only move along the direction of the slide rail 17. A groove 18 is provided at the bottom of the protective shell 2. The groove 18 is adapted to the slide rail 17. The shape and size of the groove 18 match the slide rail 17. When the protective shell 2 moves under the drive of the electric slide table 16, the groove 18 slides along the slide rail 17, realizing the movement of the protective shell 2. The slider of the electric slide table 16 is connected to the bottom of the protective shell 2.

[0031] The protective shell 2 houses a controller 19 and a temperature sensor 20. The controller 19 is electrically connected to the temperature sensor 20. As the core control component of the entire monitoring device, the controller 19 is responsible for receiving temperature data from the temperature sensor 20, controlling the operation of the temperature regulation component according to the preset temperature range, and processing, storing, and transmitting the data collected by the sensor component to achieve intelligent control of the monitoring device. The temperature sensor 20 monitors the temperature inside the protective shell 2 in real time, converts the temperature signal into an electrical signal, and transmits it to the controller 19, providing the controller 19 with the basis for temperature regulation.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A monitoring device for the positioning of concrete beam sections of a cable-stayed bridge, comprising a cable-stayed bridge body (1) and a protective shell (2), characterized in that: The protective shell (2) is installed on top of the cable-stayed bridge body (1); The protective shell (2) is equipped with a sensor assembly for sensing data of the concrete beam cross section. A temperature regulating component for regulating the temperature of the sensor assembly is installed on the outside of the protective shell (2), and one end of the temperature regulating component extends into the inside of the protective shell (2). A data collection component for collecting data is installed on the outside of the protective shell (2), one end of which extends to the protective shell (2) and is connected to the sensor component; The bottom of the protective shell (2) is equipped with a power component for driving the data collection component, and one end of the power component is connected to the protective shell (2).

2. The cable-stayed bridge concrete beam section positioning and monitoring device according to claim 1, characterized in that: The sensor assembly includes a high-precision displacement sensor (3), a strain sensor (4), a tilt sensor (5), and a micro-nano-level Beidou high-precision positioning module (6). The high-precision displacement sensor (3), strain sensor (4), tilt sensor (5), and micro-nano-level Beidou high-precision positioning module (6) are all installed inside the protective shell (2). The high-precision displacement sensor (3), strain sensor (4), and tilt sensor (5) are all tightly attached to the bottom surface inside the protective shell (2) through shock-absorbing silicone pads.

3. The cable-stayed bridge concrete beam section positioning and monitoring device according to claim 1, characterized in that: The temperature regulation component includes a semiconductor cooler (7), a heat sink (8), an air inlet pipe (9), and a fan (10). The semiconductor cooler (7) and the fan (10) are both located on the top of the protective shell (2). The air inlet of the fan (10) is connected to the cold end of the semiconductor cooler (7), and the air outlet of the fan (10) is connected to one end of the air inlet pipe (9). The end of the air inlet pipe (9) away from the air outlet of the fan (10) extends into the interior of the protective shell (2). The interior of the hot end of the semiconductor cooler (7) is provided with heat sink fins (21) and a fan (22). The heat sink (8) is connected to the hot end of the semiconductor cooler (7).

4. The cable-stayed bridge concrete beam section positioning and monitoring device according to claim 1, characterized in that: The data collection component includes a universal joint flexible link (11), a first friction plate (12), a second friction plate (13), a spring (14), and a drive motor (15). The universal joint flexible link (11) is arranged laterally and is installed on the outside of the protective shell (2). One end of the universal joint flexible link (11) extends into the inside of the protective shell (2) and is connected to the output end of the drive motor (15). The first friction plate (12) is installed on the surface of the cable-stayed bridge body (1) and is in contact with the surface. The surface of the first friction plate (12) is connected to the bottom of the spring (14), and the top of the spring (14) is connected to the universal joint flexible link (11).

5. The cable-stayed bridge concrete beam section positioning and monitoring device according to claim 4, characterized in that: The second friction plate (13) intersects perpendicularly with the side cross section of the cable-stayed bridge body (1), one end of which is tightly attached to the cross section surface of the cable-stayed bridge body (1), and the whole is tilted at a certain angle relative to the bridge deck. The second friction plate (13) and the end of the universal joint flexible connecting rod (11) away from the drive motor (15) are connected in a stable and flexible manner through a specially designed connecting seat.

6. The cable-stayed bridge concrete beam section positioning and monitoring device according to claim 1, characterized in that: The power assembly includes an electric slide (16) and a slide rail (17). The electric slide (16) is installed at the bottom of the protective shell (2). The slide rail (17) is located on both sides of the electric slide (16). The bottom of the protective shell (2) is provided with a slide groove (18). The slide groove (18) is adapted to the slide rail (17). The slider of the electric slide (16) is connected to the bottom of the protective shell (2).

7. The cable-stayed bridge concrete beam section positioning and monitoring device according to claim 1, characterized in that: The protective shell (2) is equipped with a controller (19) and a temperature sensor (20). The controller (19) is electrically connected to the temperature sensor (20).

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