Bridge prestress loss detection device and detection method thereof

Abstract

The invention relates to the technical field of bridge detection, in particular to a bridge prestress loss detection device and a detection method thereof.The bridge prestress loss detection device comprises a guide mechanism and a detection mechanism, the detection mechanism is arranged at the bottom of the guide mechanism, the guide mechanism comprises a mounting assembly, a guide assembly and a transmission assembly, and the guide assembly is arranged at the bottom of the mounting assembly; the transmission assembly is arranged at the bottom of the guide assembly, the detection mechanism comprises adjusting assemblies, adaptation assemblies, a movement assembly, a detection assembly and an energy supply assembly, the adjusting assemblies are arranged on the two sides of the transmission assembly, and the adaptation assemblies are arranged at the bottoms of the adjusting assemblies. According to the bridge prestress loss detection device and the detection method thereof, the structure for detecting the prestress loss position in the deformation process of the bridge is provided, so that the prestress loss position in the deformation process of the bridge can be detected, and the detection flexibility of the prestress loss in the deformation process of the bridge is improved.

Description

Technical Field

[0001] This invention relates to the field of bridge inspection technology, specifically to a bridge prestress loss detection device and its detection method. Background Technology

[0002] As is well known, bridge prestress loss detection devices are specialized equipment used to monitor the prestress loss of prestressed tendons in bridge structures during construction and service. They typically integrate components such as stress sensors, data acquisition modules, and signal transmission and analysis units. Through direct or indirect measurement methods, they can acquire stress change data of prestressed tendons in real time or periodically, convert it into prestress loss values, and feed them back to the staff. This provides data support for assessing the safety of bridge structures and determining whether reinforcement and maintenance are needed. It is an important detection equipment to ensure the long-term stable service of bridges.

[0003] A search revealed a Chinese patent disclosure regarding a rapid testing device and method for prestressed concrete bridge prestressed tendons under the entire span anchorage, application publication number CN115435940B. This patent adds a signal transmitting device to the working anchor that emits timing signals when each working clamp separates from the working anchor ring. Strain gauges electrically connected to a computer are then attached to the prestressing tendons one by one. This allows the computer to collect the effective prestressed tendon values ​​under the anchorage of all corresponding prestressing tendons during a single reverse tensioning operation of the through-hole jack, based on the timing signals and the resistance values ​​of the corresponding strain gauges. This significantly improves testing efficiency and makes reading the test values ​​more convenient and intuitive. If a particular prestressing tendon fails the test, targeted re-tensioning can be implemented.

[0004] When adding prestressed structures to bridges, prestress testing equipment is used to detect the stress state of the prestressed structures. The problem with existing technology is that during the process of adding prestressed structures to bridges, the bridge will undergo adaptive deformation along with the prestressed structures. Since there is no structure to detect the location of prestress loss during the deformation of the bridge, it is impossible to detect the location of prestress loss during the deformation of the bridge, thus reducing the flexibility of detecting prestress loss during the deformation of the bridge. Summary of the Invention

[0005] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides a bridge prestress loss detection device and method, which has a structure for detecting the location of prestress loss during bridge deformation. Therefore, it can detect the location of prestress loss during bridge deformation, thereby improving the flexibility of prestress loss detection during bridge deformation.

[0006] (II) Technical Solution The above-mentioned technical objective of the present invention is achieved through the following technical solution: a bridge prestress loss detection device, comprising a guiding mechanism and a detection mechanism, wherein the detection mechanism is disposed at the bottom of the guiding mechanism, the guiding mechanism comprising an installation component, a guiding component, and a transmission component, wherein the guiding component is disposed at the bottom of the installation component, the transmission component is disposed at the bottom of the guiding component, the detection mechanism comprises an adjustment component, an adaptation component, a motion component, a detection component, and a power supply component, wherein the adjustment component is disposed on both sides of the transmission component, the adaptation component is disposed at the bottom of the adjustment component, the motion component is disposed at the bottom of the adaptation component, the detection component is disposed at the front side of the motion component, and the power supply component is disposed at the bottom of the motion component.

[0007] By adopting the above technical solution, and by setting up a guiding mechanism and a detection mechanism, the guiding mechanism can be installed near the prestressed installation structure of the bridge. It can drive the detection mechanism to deform along with the deformation of the bridge, thereby detecting the prestress loss of the bridge by detecting the angular change caused by the deformation.

[0008] The present invention is further configured such that: the mounting assembly includes a T-shaped mounting plate, a ball joint rod, and a ball groove sleeve, the ball joint rod being bolted to both sides of the bottom of the T-shaped mounting plate, and the ball groove sleeve being fitted onto the bottom of the ball joint rod.

[0009] By adopting the above technical solution, and by setting up installation components, the T-shaped mounting plate can form an installation structure with the ball head rod and the ball groove sleeve. It can be installed at the prestressed structure of the bridge through the T-shaped mounting plate. The displacement adaptation structure formed by the ball head rod and the ball groove sleeve can provide support for the support plate. The ball head rod can move adaptively in multiple directions and angles within the ball groove sleeve, which can adapt to the displacement of the T-shaped mounting plate caused by the deformation of the bridge.

[0010] The present invention is further configured such that: the guiding assembly includes a support plate, a positioning sleeve and a positioning rotating rod; the support plate is welded to the bottom of the T-shaped mounting plate; the two sides of the top of the support plate are bolted to the bottom of the ball groove sleeve; four positioning sleeves are bolted to the four corners of the bottom of the support plate; and two positioning rotating rods are bolted to the inner sides of the two sides of the positioning sleeve.

[0011] By adopting the above technical solution, and by setting up a guide component, the support plate can form a transmission structure with the positioning sleeve and the positioning rotating rod to provide transmission for the transmission component. The support plate provides support for the positioning sleeve and the positioning rotating rod. When the T-shaped mounting plate moves with the deformation of the bridge, the positioning rotating rod can move synchronously with the movement of the positioning sleeve and the support plate, thereby driving the scissor mechanism to extend and retract.

[0012] The present invention is further configured such that: the transmission assembly includes a scissor mechanism, a positioning block, and positioning rods; the scissor mechanism is rotatably connected to both sides of the surface of the positioning rods; the positioning block is rotatably connected to the surface of the scissor mechanism; and the two positioning rods are respectively rotatably connected to both sides of the bottom of the scissor mechanism.

[0013] By adopting the above technical solution, and by setting up a transmission component, the scissor mechanism can form a structure with the positioning block and the positioning rod to drive the displacement of the adjustment component. As the positioning rod moves, the scissor mechanism can extend and retract downward with the positioning block as the limit point, thereby driving the positioning rod to extend and retract together, thereby adjusting the position of the adjustment component. This allows the adjustment component to change the tilt angle of the adaptation component due to displacement, and finally, by changing the tilt angle, the detection component can detect the change in angle.

[0014] The present invention is further configured such that: the adjustment assembly includes positioning rings, a stabilizing rod, and guide sleeves; four positioning rings are rotatably connected to the four corners of the positioning rod surface; the stabilizing rod is bolted between opposite sides of the positioning rings; two guide sleeves are respectively fitted onto both sides of the positioning rod surface; and the front and rear sides of the guide sleeves are bolted to the opposite side of the stabilizing rod.

[0015] By adopting the above technical solution, by setting the adjustment component, the positioning ring can form a structure with the stabilizing rod and the guide sleeve to provide support and displacement for the adaptation component. Through the support structure formed by the positioning ring and the stabilizing rod, the guide sleeve can be limited to the surface of the positioning rod and move together with the positioning rod. This allows the guide sleeve to rotate axially along the positioning rod as it moves, thereby changing the angle of the adaptation component.

[0016] The present invention is further configured such that: the adaptation component includes an adaptation sleeve, an adaptation rod, and a reinforcing rod; the two adaptation sleeves are respectively bolted to both sides of the guide sleeve; the adaptation rod is slidably connected to the inner side of the adaptation sleeve; and the reinforcing rod is bolted to the surface of the adaptation sleeve.

[0017] By adopting the above technical solution, by setting the adaptation component, the adaptation sleeve can form an adaptive deformation structure with the adaptation slide rod and the reinforcing rod. The adaptation sleeve provides guidance for the extension and retraction of the adaptation slide rod, allowing the adaptation slide rod to make adaptive extension and retraction displacement along the adaptation sleeve, thereby increasing the stability of the moving component when the angle changes. The reinforcing rod can increase the structural stability of the adaptation sleeve.

[0018] The present invention is further configured such that: the motion component includes a limiting rotating sleeve, a positioning cover, and a motion rotating plate; the limiting rotating sleeve is bolted to the right side of the adapting slide rod; the motion rotating plate is bolted to the left side of the adapting slide rod; and the positioning cover is snapped onto the rear side of the limiting rotating sleeve.

[0019] By adopting the above technical solution, and by setting a motion component, the limiting sleeve can be combined with the positioning cover and the motion rotating plate to form a detection component that provides the required angular movement for detection. As the two adaptive sliding rods tilt, the limiting sleeve and the motion rotating plate will rotate in different directions around the transmission rod as the axis, thereby driving the angle sensor and the transmission rod to rotate in different directions respectively. The angle change is generated by the rotation in different directions, and the positioning cover can provide a limit for the transmission rod.

[0020] The present invention is further configured such that: the detection component includes an angle sensor, a transmission rod, and a wire; the angle sensor is bolted to the front side of the limiting rotating sleeve; the transmission rod is bolted to the output end of the angle sensor; the wire is installed on the front side of the angle sensor; and the surface of the transmission rod is bolted to the inner side of the moving rotating plate.

[0021] By adopting the above technical solution, and by setting up detection components, the angle sensor can form a structure with the transmission rod and the wire to detect angle changes. With the limiting sleeve as the support point, the angle sensor can detect the angle changes caused by the rotation of the transmission rod and the moving plate in different directions as they rotate with the limiting sleeve and the moving plate. This allows the current prestress loss of the bridge to be detected by observing the angle changes resulting from the deformation of the bridge due to prestress. The wire can receive the angle change data transmitted by the angle sensor through an external control terminal, allowing staff to calculate the current prestress loss of the bridge by comparing the current angle change data with standard angle change data.

[0022] The present invention is further configured such that: the power supply component includes a limiting rod, a micro wind turbine, and fan blades; the limiting rod is bolted to the bottom of the moving plate; the micro wind turbine is bolted to the bottom of the limiting rod; and the fan blades are mounted on the surface of the micro wind turbine.

[0023] By adopting the above technical solution, and by setting up a power supply component, the limiting rod can form a structure with the micro wind turbine and the fan blades to provide additional power to the angle sensor. The wind power generation structure formed by the fan blades and the micro wind turbine can drive the power generation component of the micro wind turbine to rotate by the airflow at the bridge, thereby generating electricity by rotating the power generation component of the micro wind turbine. The additional power support for the angle sensor is provided through the cable built into the limiting rod, allowing the angle sensor to continue to operate in the short term without an external power source.

[0024] A detection method for a bridge prestress loss detection device includes the following steps: S1. Installation and Adaptation: First, the T-shaped mounting plate is bolted to the bridge surface at the prestressed testing structure of the bridge. Then, when the bridge deforms due to the prestressed structure, the T-shaped mounting plate will move and deform along with the deformation. The ball joint rod will deform adaptively along the ball groove sleeve. Then, the support plate will drive the positioning sleeve and positioning rotating rod to move adaptively together. The scissor mechanism will expand and contract adaptively with the displacement of the positioning rotating rod, and at the same time drive the positioning rod to move synchronously. Finally, the positioning rod drives the positioning rotating ring to move the stabilizing rod and the guide rotating sleeve synchronously. S2. Bridge Prestress Loss Detection: First, as the positioning rod shifts with the deformation of the bridge, the guide sleeve rotates adaptively along the positioning rod along with the stabilizing rod driven by the positioning ring. This also causes the adaptive sliding sleeve and the adaptive sliding rod to tilt adaptively. At this time, the adaptive sliding rod slides adaptively within the adaptive sliding sleeve. Then, the limiting sleeve and the moving plate move at an angle with the two adaptive sliding rods, rotating axially around the transmission rod. At this time, the angle sensor rotates to the left with the limiting sleeve, while the transmission rod rotates to the right with the moving plate. The angle sensor and the transmission rod change angles due to their different rotation directions, allowing the angle sensor to collect data on the angle change and transmit it to an external control terminal via wires. When the angle sensor is temporarily de-energized, the generator of the micro wind turbine rotates with the airflow along with the blades and generates electricity, providing temporary power support to the angle sensor through the cable built into the limiting rod.

[0025] (III) Beneficial Effects Compared with the prior art, the present invention provides a bridge prestress loss detection device, which has the following beneficial effects: This bridge prestress loss detection device, through the setting of a guiding mechanism, allows the installation component to form a structure that provides support and displacement for the detection mechanism together with the guiding component and the transmission component. The support structure, composed of a T-shaped mounting plate, a ball-head rod, and a ball-groove sleeve, allows the T-shaped mounting plate to adapt to the bridge's deformation when installed on the bridge surface at the prestressed structure. This allows the T-shaped mounting plate to adjust its position via the ball-head rod and ball-groove sleeve, and also moves the support plate accordingly. The position adjustment structure, composed of the support plate, a positioning sleeve, and a positioning rotating rod, allows the support plate to move along with the T-shaped mounting plate, moving the positioning sleeve and the positioning rotating rod. This provides the necessary displacement for the scissor mechanism's extension and retraction. The adjustment structure, composed of the scissor mechanism, a positioning rotating block, and a positioning rod, allows the positioning rod to extend and retract downwards as the scissor mechanism moves along with the positioning rotating rod, with the positioning rotating block limiting the movement. This changes the overall position of the adjustment component, altering its position and tilt angle, providing the subsequent detection component with an angle that adapts to the current bridge deformation for angle change detection. This bridge prestress loss detection device, through the setting of a detection mechanism, can be composed of an adjustment component, an adaptation component, a motion component, a detection component, and a power supply component to form a bridge prestress loss detection structure. A transmission structure consisting of a positioning rotating ring, a stabilizing rod, and a guide rotating sleeve allows the guide rotating sleeve to move synchronously with the positioning rod as the positioning ring moves. This allows the guide rotating sleeve to adaptively tilt and displace along the positioning rod. A displacement adaptation structure consisting of an adaptation sleeve, an adaptation sliding rod, and a reinforcing rod allows the adaptation sliding rod to adaptively slide within the adaptation sleeve during adaptive displacement and tilting, further adapting to the current displacement. An angle adjustment structure consisting of a limiting rotating sleeve, a positioning cover, and a moving rotating plate allows the limiting rotating sleeve and the moving rotating plate to move with the adaptation sliding rod, with the transmission rotating rod as the axis. The device adaptively rotates, causing the limiting sleeve to rotate the angle sensor to the right and the moving plate to rotate the transmission rod to the left. The angle change detection structure, composed of the angle sensor, transmission rod, and wires, detects the difference in rotation angle between the two components by leveraging their different rotation directions. This data is then transmitted to an external control terminal, which provides angle and change data to the operator. Furthermore, the power generation structure, consisting of the limiting rod, micro-wind turbine, and blades, allows the micro-wind turbine to generate electricity when the angle sensor is temporarily powered off. The blades, driven by airflow, rotate the micro-wind turbine's power generation components, providing temporary additional power to the angle sensor via the limiting rod. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the guiding mechanism and the detection mechanism in this invention; Figure 3 This is a schematic diagram of the guiding mechanism in this invention; Figure 4 This is a schematic diagram of the installation component and the guiding component in this invention; Figure 5 This is a schematic diagram of the transmission component in this invention; Figure 6 This is a schematic diagram of the detection mechanism in this invention; Figure 7 This is a schematic diagram of the structure of the adjustment component and the adaptation component in this invention; Figure 8 This is a schematic diagram of the structure of the motion component and the detection component in this invention; Figure 9 This is a schematic diagram of the power supply component in this invention; Figure 10 This is a schematic diagram of the detection method in this invention.

[0027] In the diagram: 1. Guiding mechanism; 11. Mounting assembly; 111. T-shaped mounting plate; 112. Ball joint rod; 113. Ball groove sleeve; 12. Guiding assembly; 121. Support plate; 122. Positioning sleeve; 123. Positioning rotating rod; 13. Transmission assembly; 131. Scissor mechanism; 132. Positioning rotating block; 133. Positioning rod; 2. Detection mechanism; 21. Adjustment assembly; 211. Positioning rotating ring; 212. Stabilizing rod; 2 13. Guide sleeve; 22. Adaptive assembly; 221. Adaptive sliding sleeve; 222. Adaptive sliding rod; 223. Reinforcing rod; 23. Motion assembly; 231. Limiting sleeve; 232. Positioning cover; 233. Motion plate; 24. Detection assembly; 241. Angle sensor; 242. Transmission rod; 243. Wire; 25. Power supply assembly; 251. Limiting rod; 252. Miniature wind turbine; 253. Fan blade. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Please see Figure 1-5A bridge prestress loss detection device includes a guiding mechanism 1 and a detection mechanism 2. The detection mechanism 2 is located at the bottom of the guiding mechanism 1. The guiding mechanism 1 includes an installation component 11, a guiding component 12, and a transmission component 13. The guiding component 12 is located at the bottom of the installation component 11, and the transmission component 13 is located at the bottom of the guiding component 12. By setting the guiding mechanism 1, the installation component 11, the guiding component 12, and the transmission component 13 can form a structure that provides support and displacement for the detection mechanism 2. Through the support structure formed by the T-shaped mounting plate 111, the ball joint rod 112, and the ball groove sleeve 113, when the T-shaped mounting plate 111 is installed on the bridge surface at the prestressed structure of the bridge, the position of the T-shaped mounting plate 111 can be changed by the deformation of the bridge, thereby allowing the T-shaped mounting plate 111 to pass through the ball joint rod 112 and the ball groove sleeve 113. To adapt to the deformation of the bridge and change the position of the support plate 121, the support plate 121, the positioning sleeve 122, and the positioning rotating rod 123 together form a position adjustment structure. The support plate 121 will move along with the positioning sleeve 122 and the positioning rotating rod 123 as the T-shaped mounting plate 111 moves. This provides the displacement required for the extension and retraction of the scissor mechanism 131. Through the adjustment structure formed by the scissor mechanism 131, the positioning rotating block 132, and the positioning rod 133, the positioning rod 133 can be extended and retracted downward by the positioning rotating block 132 as the scissor mechanism 131 moves along with the positioning rotating rod 123. This changes the overall position of the adjustment component 21, its position and tilt angle, and provides the angle change that adapts to the current deformation of the bridge for the subsequent detection component 24 to detect angle changes.

[0030] The installation assembly 11 includes a T-shaped mounting plate 111, a ball-end rod 112, and a ball groove sleeve 113. The ball-end rod 112 is bolted to both sides of the bottom of the T-shaped mounting plate 111, and the ball groove sleeve 113 is fitted onto the bottom of the ball-end rod 112. By setting the installation assembly 11, the T-shaped mounting plate 111 can form an installation structure with the ball-end rod 112 and the ball groove sleeve 113. The T-shaped mounting plate 111 can be installed at the prestressed structure of the bridge. The displacement adaptation structure formed by the ball-end rod 112 and the ball groove sleeve 113 can provide support for the support plate 121. The ball-end rod 112 can move adaptively in multiple directions and angles within the ball groove sleeve 113, which can adapt to the displacement of the T-shaped mounting plate 111 caused by the deformation of the bridge.

[0031] The guide assembly 12 includes a support plate 121, a positioning sleeve 122, and a positioning rotating rod 123. The support plate 121 is welded to the bottom of the T-shaped mounting plate 111. The top two sides of the support plate 121 are bolted to the bottom of the ball groove sleeve 113. The four positioning sleeves 122 are bolted to the four corners of the bottom of the support plate 121, and the two positioning rotating rods 123 are bolted to the inner sides of the two sides of the positioning sleeves 122. By setting the guide assembly 12, the support plate 121, the positioning sleeves 122, and the positioning rotating rods 123 can form a structure that provides transmission for the transmission assembly 13. The support plate 121 provides support for the positioning sleeves 122 and the positioning rotating rods 123. When the T-shaped mounting plate 111 is displaced due to the deformation of the bridge, the positioning rotating rods 123 can move synchronously with the movement of the positioning sleeves 122 and the support plate 121, thereby driving the scissor mechanism 131 to extend and retract.

[0032] The transmission assembly 13 includes a scissor lift mechanism 131, a positioning block 132, and a positioning rod 133. The scissor lift mechanism 131 is rotatably connected to both sides of the surface of the positioning rod 123. The positioning block 132 is rotatably connected to the surface of the scissor lift mechanism 131. The two positioning rods 133 are rotatably connected to both sides of the bottom of the scissor lift mechanism 131. By setting the transmission assembly 13, the scissor lift mechanism 131, the positioning block 132, and the positioning rods 133 can form a structure that drives the adjustment assembly 21 to move. As the positioning rod 123 moves, the scissor lift mechanism 131 can extend and retract downward with the positioning block 132 as the limiting point, thereby driving the positioning rods 133 to extend and retract together, thereby adjusting the position of the adjustment assembly 21. This allows the adjustment assembly 21 to change the tilt angle of the adaptation assembly 22 due to displacement. Finally, by changing the tilt angle, the detection assembly 24 can detect the change in angle.

[0033] The working principle of this embodiment is as follows: First, the T-shaped mounting plate 111 is bolted to the bridge surface at the prestressing detection structure of the bridge. Then, when the bridge deforms due to the prestressing structure, the T-shaped mounting plate 111 will move and deform along with the deformation. The ball head rod 112 will deform adaptively along the ball groove sleeve 113. Then, the support plate 121 will drive the positioning sleeve 122 and the positioning rotating rod 123 to move adaptively together. The scissor mechanism 131 will extend and retract adaptively with the displacement of the positioning rotating rod 123, and at the same time drive the positioning rod 133 to move synchronously. Finally, the positioning rod 133 drives the positioning rotating ring 211 to move the stabilizing rod 212 and the guiding rotating sleeve 213 synchronously.

[0034] Example 2 refer to Figure 6-9A bridge prestress loss detection device and method further include a detection mechanism 2. The detection mechanism 2 includes an adjustment component 21, an adaptation component 22, a motion component 23, a detection component 24, and a power supply component 25. The adjustment component 21 is located on both sides of the transmission component 13, the adaptation component 22 is located at the bottom of the adjustment component 21, the motion component 23 is located at the bottom of the adaptation component 22, the detection component 24 is located in front of the motion component 23, and the power supply component 25 is located at the bottom of the motion component 23. By setting the detection mechanism 2, the adjustment component 21 can interact with the adaptation component 22, the motion component 23, the detection component 24, and the power supply component 25. The structure for detecting bridge prestress loss comprises a transmission structure consisting of a positioning rotating ring 211, a stabilizing rod 212, and a guiding rotating sleeve 213. The positioning rotating ring 211 moves in tandem with the positioning rod 133, causing the stabilizing rod 212 to move the guiding rotating sleeve 213 synchronously. This allows the guiding rotating sleeve 213 to adaptively tilt and displace along the positioning rod 133. Furthermore, the displacement-adaptive structure, consisting of an adaptive sliding sleeve 221, an adaptive sliding rod 222, and a reinforcing rod 223, allows the adaptive sliding rod 222 to adaptively slide within the adaptive sliding sleeve 221 during adaptive displacement and tilting, further adapting to the current situation. The displacement of the sliding rod 222 is adjusted by the angle adjustment structure consisting of the limiting sleeve 231, the positioning cover 232, and the moving rotating plate 233. This allows the limiting sleeve 231 and the moving rotating plate 233 to adapt to the displacement and tilt of the sliding rod 222, rotating around the transmission rod 242 as the axis. This allows the limiting sleeve 231 to drive the angle sensor 241 to rotate to the right, and the moving rotating plate 233 to drive the transmission rod 242 to rotate to the left. The angle change detection structure, consisting of the angle sensor 241, the transmission rod 242, and the wire 243, detects the angle change by adjusting the different rotation directions between the angle sensor 241 and the transmission rod 242. The angle sensor 241 detects the difference in rotation angle between the two components and transmits the angle change data to an external control terminal via wire 243. The control terminal provides angle and change data information to the staff. The power generation structure composed of the limit rod 251, the micro wind turbine 252, and the fan blades 253 allows the micro wind turbine 252 to rotate with the airflow when the angle sensor 241 is temporarily de-energized. This allows the micro wind turbine 252 to generate electricity through the rotation of its components, thus providing temporary additional power support to the angle sensor 241 via the limit rod 251.

[0035] The adjustment assembly 21 includes positioning rings 211, stabilizing rods 212, and guide sleeves 213. The four positioning rings 211 are rotatably connected to the four corners of the surface of the positioning rod 133. The stabilizing rods 212 are bolted between the opposite sides of the positioning rings 211. The two guide sleeves 213 are respectively sleeved on both sides of the surface of the positioning rod 133. The front and rear sides of the guide sleeves 213 are bolted to the opposite sides of the stabilizing rods 212. By setting the adjustment assembly 21, the positioning rings 211, the stabilizing rods 212, and the guide sleeves 213 can form a structure that provides support and displacement for the adaptation assembly 22. Through the support structure formed by the positioning rings 211 and the stabilizing rods 212, the guide sleeves 213 can be limited to the surface of the positioning rod 133 and move together with the displacement of the positioning rod 133. This allows the guide sleeves 213 to rotate axially along the positioning rod 133 as it moves, thereby changing the angle of the adaptation assembly 22.

[0036] The adaptation component 22 includes an adaptation sleeve 221, an adaptation rod 222, and a reinforcing rod 223. The two adaptation sleeves 221 are bolted to both sides of the guide sleeve 213, the adaptation rod 222 is slidably connected to the inner side of the adaptation sleeve 221, and the reinforcing rod 223 is bolted to the surface of the adaptation sleeve 221. By setting the adaptation component 22, the adaptation sleeve 221, the adaptation rod 222, and the reinforcing rod 223 can form a deformation-adaptive structure. The adaptation sleeve 221 provides guidance for the telescopic movement of the adaptation rod 222, allowing the adaptation rod 222 to make adaptive telescopic displacement along the adaptation sleeve 221, thereby increasing the stability of the motion component 23 when the angle changes. The reinforcing rod 223 can increase the structural stability of the adaptation sleeve 221.

[0037] The motion component 23 includes a limiting sleeve 231, a positioning cover 232, and a motion rotating plate 233. The limiting sleeve 231 is bolted to the right side of the adapting slide rod 222, and the motion rotating plate 233 is bolted to the left side of the adapting slide rod 222. The positioning cover 232 is snapped onto the rear side of the limiting sleeve 231. By setting the motion component 23, the limiting sleeve 231, the positioning cover 232, and the motion rotating plate 233 can form a detection component 24 that provides the required angular movement for detection. As the two adapting slide rods 222 tilt, the limiting sleeve 231 and the motion rotating plate 233 will rotate in different directions around the transmission rod 242 as the axis, thereby driving the angle sensor 241 and the transmission rod 242 to rotate in different directions. The rotation in different directions generates an angle change. The positioning cover 232 can provide a limit for the transmission rod 242.

[0038] The detection component 24 includes an angle sensor 241, a transmission rod 242, and a wire 243. The angle sensor 241 is bolted to the front of the limiting sleeve 231, the transmission rod 242 is bolted to the output end of the angle sensor 241, and the wire 243 is installed on the front of the angle sensor 241. The surface of the transmission rod 242 is bolted to the inner side of the moving plate 233. By setting the detection component 24, the angle sensor 241, the transmission rod 242, and the wire 243 can form a structure for detecting angle changes. The angle sensor 241, with the limiting sleeve 231 as a support point, is connected to the transmission rod 242... As the rotating plate 233 rotates, the angle sensor 241 and the transmission rod 242 can detect the angle changes caused by the rotation of the limiting sleeve 231 and the rotating plate 233 in different directions. This angle change allows the current prestress loss of the bridge to be detected by observing the angle change resulting from the deformation of the bridge due to prestress. The wire 243 can receive the angle change data transmitted by the angle sensor 241 through an external control terminal, allowing staff to calculate the current prestress loss of the bridge by comparing the current angle change data with standard angle change data.

[0039] The power supply component 25 includes a limit rod 251, a micro wind turbine 252, and a fan blade 253. The limit rod 251 is bolted to the bottom of the rotating plate 233, the micro wind turbine 252 is bolted to the bottom of the limit rod 251, and the fan blade 253 is mounted on the surface of the micro wind turbine 252. By setting the power supply component 25, the limit rod 251, the micro wind turbine 252, and the fan blade 253 can form a structure that provides additional power to the angle sensor 241. Through the wind power generation structure formed by the fan blade 253 and the micro wind turbine 252, the fan blade 253 can drive the power generation component of the micro wind turbine 252 to rotate with the airflow at the bridge, thereby generating electricity by rotating the power generation component of the micro wind turbine 252. The additional power support for the angle sensor 241 is provided through the cable built into the limit rod 251, allowing the angle sensor 241 to continue operating in the short term without an external power source.

[0040] The working principle of this embodiment is as follows: First, when the positioning rod 133 moves with the deformation of the bridge, the guide sleeve 213 will rotate adaptively along the positioning rod 133 along with the stabilizing rod 212 driven by the positioning ring 211, and will also cause the adaptive sliding sleeve 221 and the adaptive sliding rod 222 to tilt adaptively. At this time, the adaptive sliding rod 222 will slide adaptively within the adaptive sliding sleeve 221. Then, the limiting sleeve 231 and the moving rotating plate 233 will move at an angle of tilt with the two adaptive sliding rods 222 respectively, and rotate axially around the transmission rotating rod 242. At this time, the angle sensor 2... 41 will rotate to the left with the limiting sleeve 231, while the transmission rod 242 will rotate to the right with the moving plate 233. The angle sensor 241 and the transmission rod 242 will change angle due to the different rotation directions, allowing the angle sensor 241 to collect data on the angle change and transmit it to the external control terminal through the wire 243. When the angle sensor 241 is temporarily de-energized, the power generation component of the micro wind turbine 252 will rotate with the fan blade 253 and the flowing air, and generate electricity as it rotates. The angle sensor 241 will be temporarily powered through the built-in cable of the limiting rod 251.

[0041] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. Those skilled in the art can make modifications to this embodiment without contributing any inventive step after reading this specification. 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 variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bridge prestress loss detection device, comprising a guiding mechanism (1) and a detection mechanism (2), characterized in that: The detection mechanism (2) is located at the bottom of the guide mechanism (1). The guide mechanism (1) includes an installation component (11), a guide component (12), and a transmission component (13). The guide component (12) is located at the bottom of the installation component (11), and the transmission component (13) is located at the bottom of the guide component (12). The detection mechanism (2) includes an adjustment component (21), an adaptation component (22), a motion component (23), a detection component (24), and a power supply component (25). The adjustment component (21) is located on both sides of the transmission component (13). The adaptation component (22) is located at the bottom of the adjustment component (21). The motion component (23) is located at the bottom of the adaptation component (22). The detection component (24) is located in front of the motion component (23). The power supply component (25) is located at the bottom of the motion component (23).

2. The bridge prestress loss detection device according to claim 1, characterized in that: The mounting assembly (11) includes a T-shaped mounting plate (111), a ball head rod (112), and a ball groove sleeve (113). The ball head rod (112) is bolted to both sides of the bottom of the T-shaped mounting plate (111), and the ball groove sleeve (113) is fitted onto the bottom of the ball head rod (112).

3. The bridge prestress loss detection device according to claim 2, characterized in that: The guide assembly (12) includes a support plate (121), a positioning sleeve (122), and a positioning rotating rod (123). The support plate (121) is welded to the bottom of the T-shaped mounting plate (111). The top two sides of the support plate (121) are bolted to the bottom of the ball groove sleeve (113). The four positioning sleeves (122) are bolted to the four corners of the bottom of the support plate (121), and the two positioning rotating rods (123) are bolted to the inner sides of the two sides of the positioning sleeve (122).

4. The bridge prestress loss detection device according to claim 3, characterized in that: The transmission assembly (13) includes a scissor mechanism (131), a positioning block (132), and a positioning rod (133). The scissor mechanism (131) is rotatably connected to both sides of the surface of the positioning rod (123). The positioning block (132) is rotatably connected to the surface of the scissor mechanism (131). The two positioning rods (133) are rotatably connected to both sides of the bottom of the scissor mechanism (131).

5. A bridge prestress loss detection device according to claim 4, characterized in that: The adjustment assembly (21) includes a positioning ring (211), a stabilizing rod (212), and a guide sleeve (213). The four positioning rings (211) are rotatably connected to the four corners of the surface of the positioning rod (133). The stabilizing rod (212) is bolted between the opposite sides of the positioning rings (211). The two guide sleeves (213) are respectively sleeved on both sides of the surface of the positioning rod (133). The front and rear sides of the guide sleeves (213) are bolted to the opposite side of the stabilizing rod (212).

6. The bridge prestress loss detection device according to claim 5, characterized in that: The adaptation component (22) includes an adaptation sleeve (221), an adaptation rod (222), and a reinforcing rod (223). The two adaptation sleeves (221) are bolted to both sides of the guide sleeve (213), the adaptation rod (222) is slidably connected to the inner side of the adaptation sleeve (221), and the reinforcing rod (223) is bolted to the surface of the adaptation sleeve (221).

7. A bridge prestress loss detection device according to claim 6, characterized in that: The motion component (23) includes a limiting sleeve (231), a positioning cover (232), and a motion rotating plate (233). The limiting sleeve (231) is bolted to the right side of the adapting slide rod (222), the motion rotating plate (233) is bolted to the left side of the adapting slide rod (222), and the positioning cover (232) is snapped onto the rear side of the limiting sleeve (231).

8. A bridge prestress loss detection device according to claim 7, characterized in that: The detection component (24) includes an angle sensor (241), a transmission rod (242), and a wire (243). The angle sensor (241) is bolted to the front side of the limiting sleeve (231). The transmission rod (242) is bolted to the output end of the angle sensor (241) at the rear side. The wire (243) is installed on the front side of the angle sensor (241). The surface of the transmission rod (242) is bolted to the inner side of the moving plate (233).

9. A bridge prestress loss detection device according to claim 7, characterized in that: The power supply component (25) includes a limiting rod (251), a micro wind turbine (252), and a fan blade (253). The limiting rod (251) is bolted to the bottom of the rotating plate (233), the micro wind turbine (252) is bolted to the bottom of the limiting rod (251), and the fan blade (253) is mounted on the surface of the micro wind turbine (252).

10. The detection method of the bridge prestress loss detection device as described in any one of claims 1-9, characterized in that: Includes the following steps: S1. Installation and Adaptation: First, the T-shaped mounting plate (111) is bolted to the bridge surface at the prestressed testing structure of the bridge. Then, when the bridge deforms due to the prestressed structure, the T-shaped mounting plate (111) will move and deform along with the deformation. The ball head rod (112) will deform adaptively along the ball groove sleeve (113). Then, the support plate (121) will drive the positioning sleeve (122) and the positioning rotating rod (123) to move adaptively together. The scissor mechanism (131) will expand and contract adaptively with the displacement of the positioning rotating rod (123), and at the same time drive the positioning rod (133) to move synchronously. Finally, the positioning rod (133) drives the positioning rotating ring (211) to move the stabilizing rod (212) and the guiding rotating sleeve (213) synchronously. S2. Bridge prestress loss detection: First, when the positioning rod (133) moves with the deformation of the bridge, the guide sleeve (213) will rotate adaptively along the positioning rod (133) along with the stabilizing rod (212) driven by the positioning ring (211), and drive the adaptive sleeve (221) and the adaptive sliding rod (222) to tilt adaptively. At this time, the adaptive sliding rod (222) will slide adaptively in the adaptive sleeve (221). Then, the limiting sleeve (231) and the moving plate (233) will move at an angle of inclination with the two adaptive sliding rods (222), and rotate axially with the transmission rod (242) as the axis. At this time, the angle sensor The device (241) will rotate to the left with the limiting rotating sleeve (231), while the transmission rod (242) will rotate to the right with the moving rotating plate (233). The angle sensor (241) and the transmission rod (242) will change angle due to the different rotation directions, allowing the angle sensor (241) to collect data on the angle change and transmit it to the external control terminal through the wire (243). When the angle sensor (241) is temporarily de-energized, the power generation component of the micro wind turbine (252) will rotate with the fan blade (253) and generate electricity as it rotates, providing temporary power support to the angle sensor (241) through the built-in cable of the limiting rod (251).

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