Bridge Intelligent Expansion Joint Assembly Tolerance Testing Device

Abstract

This utility model relates to the field of bridge engineering, specifically a test device for the assembly tolerance of bridge expansion joints. It includes a support platform, slider, limiting plate, L-shaped clamp, servo motor, bidirectional screw, sliding block, support frame, hydraulic rod, pressure plate, mounting plate, pressure device, and slide groove, among other structures. Using this utility model can significantly improve testing efficiency, quickly complete a large number of expansion joint inspections, and meet the high-efficiency requirements for expansion joint quality inspection in modern bridge construction and maintenance.

Description

Technical Field

[0001] This utility model relates to the field of bridge engineering, specifically to a test device for the assembly tolerance of intelligent expansion joints in bridges. Background Technology

[0002] During the bridge construction phase, newly manufactured expansion joints can be subjected to quality inspection to ensure they meet design and construction requirements, thereby guaranteeing the overall quality and service life of the bridge.

[0003] Traditional methods for inspecting expansion joints are mostly manual, which is inefficient and inaccurate, making it difficult to meet the stringent quality requirements of modern bridge engineering for expansion joints. Utility Model Content

[0004] The present invention aims to provide a test device for the assembly tolerance of intelligent expansion joints for bridges, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A bridge intelligent expansion joint assembly tolerance testing device includes a support platform, a slider slidably connected to the support platform, a limit plate slidably connected to the slider, an L-shaped clamping plate slidably connected to the limit plate, a servo motor connected to the limit plate, a bidirectional screw connected to the output end of the servo motor, a sliding block movably connected to the bidirectional screw, the sliding block slidably connected to the limit plate, the L-shaped clamping plate connected to the sliding block, a support frame connected to the support platform, a hydraulic rod connected to the support frame, a pressure plate connected to the extension end of the hydraulic rod, a mounting plate detachably connected to the pressure plate, a pressure device connected to the mounting plate, a groove on the pressure plate, an insert block slidably connected to the side wall of the groove, a connecting rod connected to the insert block, a spring sleeved on the connecting rod, the two ends of the spring connected to the insert block and the side wall of the groove respectively, an insertion hole on the mounting plate, the insert block and the insertion hole cooperating with each other, and a handle connected to the connecting rod.

[0007] The support platform and the slider are respectively connected to an adjustment mechanism, which is used to adjust the spacing.

[0008] Preferably, the adjustment mechanism includes a dual-axis motor connected to a support platform. The output end of the dual-axis motor is connected to a threaded rod, and the threaded rod is movably connected to a displacement plate. The support platform has a displacement groove, and the displacement plate is slidably connected to the displacement groove. The slider is connected to the displacement plate, and the connection method between the adjustment mechanism, the slider, and the limiting plate is the same as the connection method between the adjustment mechanism, the support platform, and the slider.

[0009] Preferably, the slider is connected to a guide rod, and the displacement plate is slidably connected to the guide rod.

[0010] Preferably, the support frame is connected to a detection camera.

[0011] Preferably, the support platform is connected to a controller, and the dual-axis motor, servo motor, hydraulic rod and detection camera are electrically connected to the controller.

[0012] The beneficial effects of this technical solution compared to existing technologies are as follows:

[0013] (1) This solution achieves precise positioning and clamping of expansion joints by setting up a servo motor, a bidirectional screw, a sliding block, and an L-shaped clamp. The servo motor precisely controls the rotation of the bidirectional screw, driving the sliding block to move precisely, thereby ensuring that the L-shaped clamp fits tightly against the expansion joint, firmly fixing it and preventing displacement or shaking during testing. This ensures accurate test data and meets the high-precision testing requirements of modern bridge engineering. The electrically controlled clamping structure can be flexibly adjusted to easily handle the testing of expansion joints of different sizes. Traditional fixing methods have poor flexibility and are difficult to adapt to various specifications of expansion joints. This solution can quickly match different expansion joints by adjusting the clamping structure, improving the versatility of the testing device and reducing testing costs. Furthermore, it greatly improves testing efficiency. The electrically controlled clamping process is fast and accurate, eliminating the need for repeated manual adjustments and reducing preparation time. At the same time, precise positioning and clamping ensure a high success rate for the first test, avoiding repeated testing and significantly improving testing efficiency. It can quickly complete a large number of expansion joint testing tasks, meeting the high-efficiency requirements for expansion joint quality testing in modern bridge engineering construction and maintenance. By incorporating components such as inserts, sockets, springs, and handles, the mounting plate and pressure device can be easily replaced simply by pulling the handle to disengage the insert from the socket. This facilitates the selection of appropriate pressure testing equipment based on different testing requirements, thereby improving the versatility and flexibility of the device.

[0014] (2) By setting an adjustment mechanism and driving the threaded rod with a dual-axis motor, the displacement plate can be controlled to slide within the displacement groove simultaneously, thereby moving the slider and the limiting plate, achieving synchronous adjustment of the distance between the support platform and the slider, and between the slider and the limiting plate. This design can easily adapt to bridge expansion joints of different lengths and sizes, greatly improving the versatility of the testing device and enabling it to meet diverse testing needs. It eliminates the need to change equipment for different specifications of expansion joints, reducing testing costs. Simultaneously, the precise control of the dual-axis motor allows for precise control of the rotation angle of the threaded rod and the moving distance of the displacement plate, thereby achieving precise adjustment of the positions of the slider and the limiting plate. This improves the positioning accuracy of the expansion joint and ensures the accuracy of the test results.

[0015] (3) By setting guide rods, the displacement plate is guided during the movement, which enhances the stability of the displacement plate during movement, avoids its deviation during the adjustment of the spacing, and ensures the reliability of the entire test process.

[0016] (4) By setting up a detection camera, the deformation of the expansion joint during the pressure test can be observed in real time. Combined with the data from the pressure gauge, this greatly improves the comprehensiveness of the expansion joint performance testing. During the pressure test, the pressure gauge can accurately measure the pressure data borne by the expansion joint, while the detection camera can capture the deformation image of the expansion joint in real time. By combining the two, staff can understand the compressive strength of the expansion joint and intuitively observe its deformation under pressure, comprehensively evaluate the performance of the expansion joint, effectively avoid detection loopholes caused by a single detection method, and ensure the reliable quality of the expansion joints put into use.

[0017] (5) By setting up a controller, the testing process is automated, and data acquisition is achieved, bringing efficiency and accuracy to the testing work. The automated control function enables equipment such as dual-axis motors, servo motors, and hydraulic rods to work together according to preset programs, eliminating the need for frequent manual operation, significantly shortening the testing cycle, and improving testing efficiency. At the same time, the controller automatically collects data, avoiding errors that may occur when manually reading and recording data, ensuring the accuracy and reliability of the data, and providing a more accurate basis for the quality assessment of bridge engineering. Attached Figure Description

[0018] Figure 1 This is a front sectional view of the present invention;

[0019] Figure 2 This is a right-side sectional view of the present invention;

[0020] Figure 3 for Figure 1 Enlarged view of point A;

[0021] Reference numerals: 1. Slider; 2. Support platform; 3. Threaded rod; 4. Displacement plate; 5. Displacement groove; 6. Dual-axis motor; 7. Guide rod; 8. Controller; 9. Servo motor; 10. Bidirectional screw; 11. L-shaped clamp; 12. Limiting plate; 13. Support frame; 14. Hydraulic rod; 15. Pressure device; 16. Detection camera; 17. Pressure plate; 18. Handle; 19. Sliding block; 20. Mounting plate; 21. Insertion hole; 22. Insertion block; 23. Slide groove; 24. Spring; 25. Connecting rod. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments:

[0023] like Figure 1-3The bridge intelligent expansion joint assembly tolerance testing device shown includes a support platform 2. Sliding blocks 1 are slidably connected to both ends of the top of the support platform 2. Limiting plates 12 are slidably connected to both ends of the top of the two sliding blocks 1. L-shaped clamping plates 11 are slidably connected to both ends of each limiting plate 12. A servo motor 9 is connected to each limiting plate 12. A bidirectional screw 10 is connected to the output end of each servo motor 9. Each bidirectional screw 10 is rotatably connected to its corresponding limiting plate 12. The outer walls of each bidirectional screw 10 are movable at both ends. A sliding block 19 is dynamically connected, and each sliding block 19 is slidably connected to the inner wall of the corresponding limiting plate 12. Each L-shaped clamp 11 is connected to the corresponding sliding block 19. The servo motor 9 drives the bidirectional screw 10 to rotate, and the sliding block 19 slides synchronously and at the same speed along with the screw on the inner wall of the limiting plate 12. Since the L-shaped clamp 11 is connected to the sliding block 19, the movement of the sliding block 19 causes the L-shaped clamp 11 to move closer or further away synchronously and at the same speed, thereby achieving precise clamping of the expansion joint and ensuring the stability of the expansion joint during testing. A support frame 13 is connected to one side of the top of the support platform 2. The support frame 13 is connected to a hydraulic rod 14. The telescopic end of the hydraulic rod 14 is connected to a pressure plate 17. The bottom of the pressure plate 17 is detachably connected to a mounting plate 20. The bottom of the mounting plate 20 is connected to a pressure device 15, which is used to measure the pressure applied to the expansion joint. When the hydraulic rod 14 is working, it pushes the pressure plate 17 to move up and down, applying pressure to the expansion joint placed on the support platform 2. The pressure plate 17 has grooves 23 at both ends, and insert blocks 22 are slidably connected to the side walls of the two grooves 23. Connecting rods 25 are connected to the opposite sides of the two insert blocks 22, and the two connecting rods 25 are slidably connected to the pressure plate 17. Springs 24 are fitted onto the outer walls of the two connecting rods 25, and the two ends of the two springs 24 are connected to the corresponding insert blocks 22 and the side walls of the grooves 23, respectively. The mounting plate 20 has insertion holes 21 at both ends, and the two insert blocks 22 cooperate with the corresponding insertion holes 21. Handles 18 are connected to the ends of the two connecting rods 25 away from the insert blocks 22. When the insertion holes 21 of the mounting plate 20 are aligned with the insert blocks 22, the insert blocks 22 are inserted into the insertion holes 21 under the action of the springs 24, realizing the quick installation and disassembly of the mounting plate 20 and the pressure plate 17, facilitating the replacement of pressure devices 15 of different specifications to meet different testing requirements. Adjustment mechanisms are connected to the support platform 2 and the slider 1, and these mechanisms are used to adjust the spacing.

[0024] like Figure 1 , 2As shown, the adjustment mechanism includes a dual-axis motor 6, which is connected to the support platform 2. Two sets of output ends of the dual-axis motor 6 are respectively connected to threaded rods 3. The other ends of the two threaded rods 3 are rotatably connected to the support platform 2. Displacement plates 4 are movably connected to the outer walls of the two threaded rods 3. The support platform 2 has displacement grooves 5, and the two displacement plates 4 are slidably connected to the displacement grooves 5. The bottoms of the two sliders 1 are respectively connected to the tops of the displacement plates 4. The connection method between the adjustment mechanism and the sliders 1 and the limiting plates 12 is consistent with the connection method between the adjustment mechanism and the support platform 2 and the sliders 1, allowing for further adjustment of the spacing between each set of sliders 1 and between each set of limiting plates 12 to accommodate expansion joints of different sizes. Guide rods 7 are connected to both ends of the inner walls of the two sliders 1, and each displacement plate 4 is slidably connected to the corresponding two guide rods 7 to ensure the stability and accuracy of the movement process. A detection camera 16 is connected to the support frame 13 to observe the deformation of the expansion joint during the pressure test in real time. Combined with the data measured by the pressure gauge 15, this provides a basis for a comprehensive evaluation of the expansion joint's performance. The support platform 2 is connected to a controller 8. The dual-axis motor 6, servo motor 9, hydraulic rod 14, and detection camera 16 are electrically connected to the controller 8. The controller 8 can automate the entire testing process, controlling the dual-axis motor 6 to adjust the spacing, the servo motor 9 to control the L-shaped clamp 11 to clamp, and the hydraulic rod 14 to apply pressure. At the same time, it can also collect data from the detection camera 16 and the pressure device 15, improving testing efficiency and accuracy and reducing errors caused by manual operation.

[0025] The specific implementation process is as follows:

[0026] In use, select a suitable pressure device from the spare pressure device 15 according to the specifications of the expansion joint to be tested and the expected pressure range. Pull the handle 18 to make the insert 22 slide out of the slide groove 23 against the elastic force of the spring 24, remove the original mounting plate 20, and then align the mounting plate 20 with the appropriate pressure device 15 with the pressure plate 17. When the insertion holes 21 at both ends of the mounting plate 20 are aligned with the insert 22, release the handle 18. The insert 22 is inserted into the insertion hole 21 under the action of the spring 24, completing the replacement of the pressure device 15. Place the expansion joint to be tested on the slider 1, initially between the two sets of limit plates 12. Then, the operator starts the dual-axis motor 6 in the adjustment mechanism connected to the support platform 2 and the slider 1 through the controller 8. The two output ends of the dual-axis motor 6 drive the threaded rod 3 to rotate, causing the displacement plate 4 to slide along the displacement groove 5, and the slider 1 to move accordingly, thereby adjusting the distance between the support platform 2 and the slider 1. Similarly, the adjustment mechanism is connected to slider 1 and limiting plate 12 in the same way, which can further adjust the spacing between each group of sliders 1 and each group of limiting plates 12 to adapt to the size of the expansion joint for clamping. The operator starts the servo motor 9 through the controller 8. The servo motor 9 drives the bidirectional screw 10 to rotate, so that each sliding block 19 slides synchronously and at the same speed along with the screw on the inner wall of the limiting plate 12. This in turn drives the L-shaped clamping plate 11 to move synchronously and at the same speed toward the expansion joint until the expansion joint is precisely clamped, ensuring that the expansion joint remains stable during the test.

[0027] Subsequently, the operator activates the hydraulic rod 14 via controller 8. The telescopic end of the hydraulic rod 14 pushes the pressure plate 17 downward, causing the pressure device 15 to move downward and contact the expansion joint, thus applying pressure to the expansion joint. The pressure device 15 measures the pressure applied to the expansion joint in real time and transmits the data to controller 8. During the pressure application process by the hydraulic rod 14, the detection camera 16 observes the deformation of the expansion joint in real time and transmits the captured image or video data to controller 8. Controller 8 receives the pressure data measured by pressure device 15 and the deformation data captured by detection camera 16, and stores and processes this data. The operator can use relevant analysis software to analyze the data collected by controller 8, combining the pressure data and deformation data to comprehensively evaluate the performance of the expansion joint and determine whether it meets design requirements and relevant standards. Based on the data analysis results, conclusions are drawn regarding whether the assembly tolerances of the expansion joint are qualified and whether its performance is good, providing a reference for the use of expansion joints in bridge engineering.

[0028] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A device for testing the assembly tolerance of an intelligent expansion joint for a bridge, characterized in that: The system includes a support platform (2), a slider (1) slidably connected to the support platform (2), a limit plate (12) slidably connected to the slider (1), an L-shaped clamp (11) slidably connected to the limit plate (12), a servo motor (9) connected to the limit plate (12), a bidirectional screw (10) connected to the output end of the servo motor (9), a sliding block (19) movably connected to the bidirectional screw (10), the sliding block (19) slidably connected to the limit plate (12), the L-shaped clamp (11) connected to the sliding block (19), a support frame (13) connected to the support platform (2), a hydraulic rod (14) connected to the support frame (13), and a pressure rod (14) connected to the telescopic end of the hydraulic rod (14). The pressure plate (17) is detachably connected to the mounting plate (20), the mounting plate (20) is connected to the pressure device (15), the pressure plate (17) has a sliding groove (23), the side wall of the sliding groove (23) is slidably connected to the insert (22), the insert (22) is connected to the connecting rod (25), the connecting rod (25) is slidably connected to the pressure plate (17), the connecting rod (25) is sleeved with a spring (24), the two ends of the spring (24) are respectively connected to the insert (22) and the side wall of the sliding groove (23), the mounting plate (20) has an insertion hole (21), the insert (22) and the insertion hole (21) cooperate with each other, and the connecting rod (25) is connected to the handle (18). The support platform (2) and the slider (1) are respectively connected to an adjustment mechanism, which is used to adjust the spacing.

2. The bridge intelligent expansion joint assembly tolerance test device of claim 1, wherein: The adjustment mechanism includes a dual-axis motor (6), which is connected to the support platform (2). The output end of the dual-axis motor (6) is connected to a threaded rod (3), and the threaded rod (3) is movably connected to a displacement plate (4). The support platform (2) has a displacement groove (5), and the displacement plate (4) is slidably connected to the displacement groove (5). The slider (1) is connected to the displacement plate (4). The connection method of the adjustment mechanism, the slider (1), and the limiting plate (12) is the same as the connection method of the adjustment mechanism, the support platform (2), and the slider (1).

3. The bridge intelligent expansion joint assembly tolerance test device of claim 2, wherein: The slider (1) is connected to the guide rod (7), and the displacement plate (4) is slidably connected to the guide rod (7).

4. The bridge intelligent expansion joint assembly tolerance test device of claim 1, wherein: The support frame (13) is connected to a detection camera (16).

5. The bridge intelligent expansion joint assembly tolerance test device of claim 2 or 4, wherein: The support platform (2) is connected to a controller (8), and the dual-axis motor (6), servo motor (9), hydraulic rod (14) and detection camera (16) are electrically connected to the controller (8).

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