Mechanical frequency response detection device for bridge impact vibration sensing

Abstract

The application relates to a mechanical frequency response detection device for bridge impact vibration sensing, and relates to the technical field of bridge detection, which comprises a storage box with an open top and a cover plate, the cover plate is rotationally installed at the top of the storage box, an anti-toppling automatic ejection assembly is fixedly installed at the bottom of the storage box, sliding grooves are arranged at the two sides in the storage box, the anti-toppling automatic ejection assembly is slidingly installed in the sliding grooves, a frequency response detector for detecting bridge impact vibration is fixedly installed at the top of the anti-toppling automatic ejection assembly, and a fixing frame is fixed on the anti-toppling automatic ejection assembly; the anti-toppling automatic ejection assembly can rapidly and stably eject the frequency response detector and a detection head to a suitable detection position, ensures that vibration data of the bridge can be timely and accurately captured, has good stability, and can effectively avoid device toppling or displacement caused by bridge vibration or external impact during the ejecting process.

Description

Technical Field

[0001] This application relates to the field of bridge inspection technology, and in particular to a mechanical frequency response detection device for bridge impact vibration sensing. Background Technology

[0002] Bridges generally refer to structures built over rivers, lakes, and seas to allow vehicles and pedestrians to pass smoothly. To adapt to the modern, rapidly developing transportation industry, bridges have also been extended to refer to buildings that cross mountain streams, adverse geological conditions, or meet other transportation needs to make travel more convenient. After the bridge is built, it is necessary to measure the bridge's vibration frequency data.

[0003] A search revealed an existing patent (publication number: CN212843963U) that discloses a measuring device for bridge vibration, including a vibration measuring instrument storage mechanism. The upper surface of the vibration measuring instrument is provided with a silicone protective pad, and the outer side wall of the vibration measuring instrument is provided with a rubber buffer pad. Ventilation holes are formed on the lower surface of each rubber buffer pad. A connecting wire is installed on the upper outer side of the vibration measuring instrument in the storage mechanism, and the connecting wire is connected to a connector. This measuring device for bridge vibration, through the storage mechanism, allows the connecting wire to be placed inside the storage mechanism, and the vibration sensor can be removed and placed inside the storage slot. This avoids collisions or friction between the vibration sensor and external objects during movement, preventing damage or malfunction of the vibration sensor and thus affecting the measurement data, thereby improving the practicality of the device. The inventors discovered the following problems with the prior art during the development of this application:

[0004] While existing bridge vibration measurement devices can provide some protection for vibration sensors, they lack effective anti-tipping and stable ejection mechanisms when pushing the vibration measuring instrument and sensor to the detection position. In actual detection scenarios, bridges may vibrate to varying degrees due to various factors, and there may also be unexpected impacts from the external environment. During the ejection process, existing measurement devices are prone to tipping over or shifting due to these factors, which makes it impossible for the vibration sensor to be accurately positioned in the appropriate detection location, seriously affecting the accuracy of capturing bridge impact vibration data.

[0005] Therefore, a mechanical frequency response detection device for bridge impact vibration sensing is proposed to address the aforementioned technical problems. Utility Model Content

[0006] To address the aforementioned issues, this application provides a mechanical frequency response detection device for bridge impact vibration sensing.

[0007] This application provides a mechanical frequency response detection device for bridge impact vibration sensing, which adopts the following technical solution:

[0008] A mechanical frequency response detection device for bridge impact vibration sensing includes a storage box with an open top and a cover plate. The cover plate is rotatably mounted on the top of the storage box. An anti-tipping automatic ejection assembly is fixedly installed on the bottom of the storage box. Slide grooves are provided on both sides inside the storage box. The anti-tipping automatic ejection assembly is slidably installed inside the slide grooves. A frequency response detector for detecting bridge impact vibration is fixedly installed on the top of the anti-tipping automatic ejection assembly. A fixing frame is fixed on the anti-tipping automatic ejection assembly. A detection head is provided inside the fixing frame. A connecting wire is installed between the frequency response detector and the detection head.

[0009] Preferably, the anti-tipping automatic ejection assembly includes a movable block and a mounting plate. The movable block is slidably disposed inside the chute. The mounting plate is fixedly connected to two of the movable blocks. Four support plates are fixedly disposed at the bottom of the storage box. An mounting shaft is rotatably mounted between two of the support plates.

[0010] By adopting the above technical solution, the frequency response detector can move up and down with the mounting plate, making it convenient to use and store the frequency response detector, and providing convenience for the detection of bridge impact vibration.

[0011] Preferably, a gear and a take-up roller are fixed to the outside of the mounting shaft.

[0012] By adopting the above technical solution, when the mounting shaft rotates, it can drive the gear and the take-up roller to rotate synchronously. The gear is used to cooperate with subsequent components to realize the transmission function, while the take-up roller can perform the winding and unwinding operation of the connecting rope, thereby controlling the movement of the moving block.

[0013] Preferably, a movable plate is provided between the two support plates, and a toothed plate is fixed on the top of the movable plate, the toothed plate being meshed with the gear.

[0014] By adopting the above technical solution, when the gear rotates, it can drive the meshing toothed plate to move left and right, thereby realizing the operation of moving the plate left and right. The left and right movement of the moving plate improves the stability of the storage box for detection on the bridge.

[0015] Preferably, a connecting rope is wound around the outside of the take-up roller, and the other end of the connecting rope passes through the storage box and is fixed to the top of the moving block.

[0016] By adopting the above technical solution, the take-up roller is connected to the moving block through a connecting rope. When the take-up roller rotates to take in and release the connecting rope, it can accurately control the up and down movement of the moving block in the chute, thereby driving the mounting plate and frequency response detector to rise and fall to meet the testing requirements of different heights.

[0017] Preferably, the movable plate has a fixing groove on both the front and rear sides, and a sliding rod is fixed inside the fixing groove.

[0018] By adopting the above technical solution, the sliding bar setting plays a limiting role in the movement trajectory of the moving plate, ensuring that the moving plate can only move stably left and right along the direction of the sliding bar, avoiding deviation or shaking during the movement process, thereby improving the overall stability of the detection device.

[0019] Preferably, a slider is fixed to the inner side of the support plate and the slider is slidably disposed on the outer side of the slide rod.

[0020] By adopting the above technical solution, the combined use of the slider and the slide rod further enhances the stability of the moving plate. The sliding of the slider on the outside of the slide rod not only reduces frictional resistance, but also makes the movement of the moving plate smoother, which helps to improve the accuracy of the detection data. At the same time, it also extends the service life of the device and reduces wear caused by long-term use.

[0021] Preferably, the frequency response detector is equipped with a display screen for real-time display of the frequency response data of the bridge impact vibration and a knob for controlling the operation of the frequency response detector.

[0022] By adopting the above technical solution, the display screen allows inspectors to intuitively and in real time observe the frequency response data of bridge impact vibration, facilitating timely judgment and decision-making, and improving the efficiency and accuracy of the inspection work. The knob design makes it convenient for inspectors to operate and control the frequency response detector, and the inspection parameters can be adjusted according to actual needs to meet the requirements of different bridges and different inspection scenarios.

[0023] 1. Compared with existing technologies, this mechanical frequency response detection device for bridge impact vibration sensing achieves stable lifting and tilting of the frequency response detector during use through the design of an anti-tipping automatic ejection component. The left and right movement of the moving plate improves the stability of the storage mechanism, reducing the possibility of the detector tipping over or being damaged due to bridge vibration or external impact. At the same time, with the cooperation of the toothed plate, gears, connecting ropes and moving blocks, the frequency response detector is automatically lifted and lowered without manual intervention, reducing the difficulty of operation and labor intensity, and improving the convenience and efficiency of the detection work. Moreover, the device adopts a mechanical transmission structure, which reduces the possibility of electrical failures, lowers maintenance costs, and extends the service life of the device compared with electronic control.

[0024] 2. Compared with the prior art, this mechanical frequency response detection device for bridge impact vibration sensing can separate the frequency response detector and the detection head. By installing the frequency response detector on the top of the anti-tipping automatic ejection component and fixing the detection head in an independently set frame, the two can transmit data through a connecting line. This partitioned placement design effectively avoids collisions or interference between components caused by vibration during the detection process, which protects the safety of the precision detection equipment and ensures the accuracy of the detection data. Attached Figure Description

[0025] Figure 1 This is a cross-sectional view of the overall structure of this application;

[0026] Figure 2 This is a schematic diagram showing the connection between the anti-tipping automatic ejection assembly, frequency response detector, fixing frame, and detection head of this application;

[0027] Figure 3 This is a schematic diagram showing the connection of the frequency response detector, detection head, connecting wires, display screen, and knob in this application;

[0028] Figure 4 This is a schematic diagram of the anti-tipping automatic ejection component structure of this application;

[0029] Figure 5 This is a partial structural breakdown diagram of the anti-tipping automatic ejection component of this application.

[0030] The attached diagram is labeled as follows: 1. Storage box; 2. Cover plate; 3. Anti-tipping automatic ejection assembly; 301. Moving block; 302. Mounting plate; 303. Support plate; 304. Mounting shaft; 305. Gear; 306. Rewinding roller; 307. Connecting rope; 308. Toothed plate; 309. Fixing groove; 310. Slide rod; 311. Sliding block; 312. Moving plate; 4. Slide groove; 5. Frequency response detector; 6. Fixing frame; 7. Detection head; 8. Connecting wire; 9. Display screen; 10. Knob. Detailed Implementation

[0031] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0032] The following is in conjunction with the appendix Figures 1-5 This application will be described in further detail below.

[0033] A mechanical frequency response detection device for bridge impact vibration sensing includes a storage box 1 with an open top and a cover 2. The cover 2 is rotatably mounted on the top of the storage box 1. The storage box 1 and cover 2 not only provide good storage and protection for the frequency response detector 5, preventing it from being damaged by the external environment during non-detection periods, but also make opening and closing operations simple and quick due to the rotatable installation of the cover 2. An anti-tipping automatic ejection component 3 is fixedly installed at the bottom of the storage box 1. Slide grooves 4 are provided on both sides inside the storage box 1, and the anti-tipping automatic ejection component 3 is slidably installed inside the slide grooves 4. The top of the automatic ejection assembly 3 is fixedly equipped with a frequency response detector 5 for detecting bridge impact vibration. The anti-tipping automatic ejection assembly 3 is fixed with a fixing frame 6, and the fixing frame 6 is equipped with a detection head 7. The anti-tipping automatic ejection assembly 3 and the fixing frame 6 can place the frequency response detector 5 and the detection head 7 separately, effectively avoiding collisions or interference between the components due to vibration during the detection process. A connecting line 8 is installed between the frequency response detector 5 and the detection head 7. The front of the frequency response detector 5 is equipped with a display screen 9 for real-time display of the frequency response data of the bridge impact vibration and a knob 10 for controlling the operation of the frequency response detector 5.

[0034] The working process of this application is as follows: The inspector places the storage box 1 on top of the bridge to be inspected, ensuring that the storage box 1 will not shake due to the unevenness of the bridge surface. Then, the cover plate 2 is rotated, and the anti-tipping automatic ejection component 3 is pulled. This not only automatically moves the frequency response detector 5, the fixing frame 6, and the detection head 7 upwards, but also improves the stability of the device, preventing the storage box 1 from tipping over or shifting due to bridge vibration. Once the frequency response detector 5 has moved to the appropriate detection height, the inspector can turn it on by rotating the knob 10. At this time, the detection head 7 begins to work, capturing the signal generated by the bridge's impact vibration. The signal captured by the detection head 7 is transmitted in real time to the frequency response detector 5 via the connecting cable 8. The frequency response detector 5 receives the signal... The received signals are quickly processed and analyzed, and the processed bridge impact vibration frequency response data is displayed intuitively on the display screen 9. The inspectors can observe these data in real time and judge the vibration status of the bridge based on the changes in the data. If abnormal bridge vibration is found during the inspection, the inspectors can record the relevant data in time to provide an accurate basis for subsequent bridge maintenance and repair. After the inspection is completed, the inspectors turn the knob 10 to turn off the frequency response detector 5, and then operate the anti-tipping automatic ejection component 3 in reverse to make it move the frequency response detector 5, the fixing frame 6 and the detection head 7 downward automatically until they return to the storage box 1. Finally, the cover plate 2 is turned to close the storage box 1 and the entire detection device is safely stored for the next use.

[0035] Furthermore, the frequency response detector 5, through its internal precision algorithm module, can filter, amplify, and perform spectrum analysis on the received vibration signal, effectively eliminating environmental noise interference and extracting accurate characteristic frequencies of bridge impact vibration. This ensures that the displayed frequency response data has high precision and reliability. The frequency response detector 5 also has a data storage function, which can automatically save the collected bridge impact vibration frequency response data during the detection process, avoiding data loss due to unexpected situations and providing a reliable guarantee for subsequent data analysis and research. At the same time, the casing of the frequency response detector 5 is made of high-strength, corrosion-resistant materials, which can effectively resist the erosion of the external environment, extend the service life of the equipment, and reduce maintenance costs.

[0036] The anti-tipping automatic ejection assembly 3 includes a movable block 301 and a mounting plate 302. The movable block 301 is slidably disposed inside the slide groove 4. The mounting plate 302 is fixedly connected to two movable blocks 301. The top of the fixing frame 6 is fixed to the bottom of the mounting plate 302. Four support plates 303 are fixed to the bottom of the storage box 1. The support plates 303 provide support for the storage box 1. The support plates 303 and the movable plate 312 work together to improve the stability of the storage box 1 during bridge impact and vibration testing. A mounting shaft 304 is rotatably mounted between two support plates 303. The outer side of the mounting shaft 304 is fixed. The device includes a gear 305 and a take-up roller 306. A movable plate 312 is provided between two support plates 303. A toothed plate 308 is fixed on the top of the movable plate 312. The toothed plate 308 and the gear 305 are meshed together. A connecting rope 307 is wound around the outside of the take-up roller 306. The other end of the connecting rope 307 passes through the storage box 1 and is fixed to the top of the movable block 301. Fixed grooves 309 are provided on the front and rear sides of the movable plate 312. A sliding rod 310 is fixed inside the fixed groove 309. A slider 311 is fixed inside the support plate 303 and is slidably disposed outside the sliding rod 310.

[0037] In use, the inspector pulls the movable plate 312 to both sides. As the movable plate 312 moves, the toothed plate 308 fixed to the top of the movable plate 312 moves laterally. Since the toothed plate 308 is meshed with the gear 305 on the mounting shaft 304, the movement of the toothed plate 308 will drive the gear 305 to rotate. The rotation of the gear 305 will further drive the mounting shaft 304 to rotate. When the mounting shaft 304 rotates, the winding roller 306 fixed on its outer side will rotate accordingly, performing winding and unwinding operations on the connecting rope 307 wound on the winding roller 306. When the connecting rope 307 is wound up, the movable block 301 fixed at the other end of the connecting rope 307 slides upward in the slide groove 4. Since the movable block 301 is fixedly connected to the mounting plate 302, the mounting plate 302 also moves upward, thereby driving the frequency response detector 5 mounted on the top of the mounting plate 302, as well as the fixing frame 6 and the detection head 7 fixed on the mounting plate 302, to move upward until the frequency response detector 5... Reaching the appropriate testing height, during this process, the slider 311 on the inner side of the support plate 303 slides on the outer side of the slide rod 310 in the fixing groove 309 of the moving plate 312, which plays a stable guiding role in the movement of the moving plate 312, ensuring the smooth movement of the entire anti-tipping automatic ejection assembly 3. At the same time, the moving plate 312 extends out of both sides of the storage box 1 and the bottom of the moving plate 312 contacts the bridge, increasing the contact area with the bridge surface, further enhancing the stability of the device during the testing process, preventing the device from tipping over or shifting due to bridge vibration or external impact, and ensuring the smooth progress of the testing work. When the testing work is completed, the testing personnel push the moving plate 312 in the opposite direction. Through the transmission of the toothed plate 308, gear 305, mounting shaft 304, winding roller 306 and connecting rope 307, the moving block 301 slides downward in the slide groove 4, driving the frequency response detector 5, fixing frame 6 and testing head 7 back into the storage box 1, completing the storage of the testing device.

[0038] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A mechanical frequency response detection device for bridge impact vibration sensing, comprising a storage box (1) with an open top and a cover plate (2), wherein the cover plate (2) is rotatably mounted on the top of the storage box (1), characterized in that: The storage box (1) is fixedly installed with an anti-tipping automatic ejection assembly (3) at the bottom. The storage box (1) has sliding grooves (4) on both sides inside. The anti-tipping automatic ejection assembly (3) is slidably installed inside the sliding grooves (4). The anti-tipping automatic ejection assembly (3) is fixedly installed with a frequency response detector (5) for detecting bridge impact vibration at the top. The anti-tipping automatic ejection assembly (3) is fixed with a fixing frame (6). The fixing frame (6) is provided with a detection head (7) inside. A connecting line (8) is installed between the frequency response detector (5) and the detection head (7).

2. The mechanical frequency response detection device for bridge impact vibration sensing according to claim 1, characterized in that: The anti-tipping automatic ejection assembly (3) includes a moving block (301) and a mounting plate (302). The moving block (301) is slidably disposed inside the slide groove (4). The mounting plate (302) is fixedly connected to two of the moving blocks (301). Four support plates (303) are fixed at the bottom of the storage box (1). An installation shaft (304) is rotatably installed between two of the support plates (303).

3. The mechanical frequency response detection device for bridge impact vibration sensing according to claim 2, characterized in that: A gear (305) and a take-up roller (306) are fixed on the outside of the mounting shaft (304).

4. The mechanical frequency response detection device for bridge impact vibration sensing according to claim 3, characterized in that: A movable plate (312) is provided between the two support plates (303), and a toothed plate (308) is fixed on the top of the movable plate (312). The toothed plate (308) and the gear (305) are meshed together.

5. A mechanical frequency response detection device for bridge impact vibration sensing according to claim 4, characterized in that: A connecting rope (307) is wound around the outside of the take-up roller (306), and the other end of the connecting rope (307) passes through the storage box (1) and is fixed to the top of the moving block (301).

6. A mechanical frequency response detection device for bridge impact vibration sensing according to claim 5, characterized in that: The movable plate (312) has a fixing groove (309) on both the front and rear sides, and a slide rod (310) is fixed inside the fixing groove (309).

7. A mechanical frequency response detection device for bridge impact vibration sensing according to claim 6, characterized in that: A slider (311) is fixed on the inner side of the support plate (303), and the slider (311) is slidably disposed on the outer side of the slide rod (310).

8. A mechanical frequency response detection device for bridge impact vibration sensing according to claim 1, characterized in that: The frequency response detector (5) is equipped with a display screen (9) for real-time display of the frequency response data of the bridge impact vibration and a knob (10) for controlling the operation of the frequency response detector (5).

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