Bridge cable tensile resonance detection device with wind power simulation function

Abstract

The invention discloses a bridge cable stretching resonance detection device with a wind power simulation function, the bridge cable stretching resonance detection device comprises a rack, a clamping mechanism, a stretching mechanism and a wind power simulation mechanism, the clamping mechanism is fixedly connected with the rack, the stretching mechanism is fixedly connected with the clamping mechanism, the wind power simulation mechanism is fixedly connected with the rack, and the wind power simulation mechanism is fixedly connected with the rack. The clamping mechanism is used for fixing the inhaul cable, the stretching mechanism is used for carrying out stretching detection on the inhaul cable, during detection, the inhaul cable is firstly cut into a proper length, then the inhaul cable is fixed to the detection device through the clamping mechanism, and the stretching mechanism is started to drive the clamping mechanism to move, so that stretching detection is carried out on the inhaul cable; the wind power simulation mechanism is started to simulate vibration generated by wind power, the vibration is transmitted to the inhaul cable, the deformation of the inhaul cable during vibration is detected, and the anti-vibration performance of the inhaul cable can be judged.

Description

Technical Field

[0001] The invention relates to the technical field of bridge detection, and in particular to a bridge cable tensile resonance detection device with a wind simulation function. Background Art

[0002] Bridges generally refer to buildings erected on rivers for vehicles and people to pass through. With the rapid development of the transportation industry, various types of bridges have emerged one after another, and suspension bridges have been widely used due to their excellent performance. Suspension bridges mainly bear the weight of the bridge deck through cables, which requires the cables to have high tensile strength to prevent them from breaking during use. In addition, suspension bridges have large spans and more flexible overall structures. When the bridge deck is affected by wind, it will shake to a certain extent, which will cause the cables to resonate. Therefore, the strength of the cables themselves needs to meet the corresponding design requirements, which requires tensile resonance testing of the produced cables.

[0003] However, existing detection devices often simulate the shaking caused by wind blowing on the bridge deck through the vibration of vibration motors and other related mechanisms. The vibration amplitude cannot be adjusted in real time, the simulation effect is poor, and the detection accuracy cannot be guaranteed. Summary of the invention

[0004] The object of the present invention is to provide a bridge cable tensile resonance detection device with wind simulation function to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a bridge tensile resonance detection device includes a frame, a clamping mechanism, a stretching mechanism, and a wind simulation mechanism. The clamping mechanism is tightly connected to the frame, the stretching mechanism is tightly connected to the clamping mechanism, the wind simulation mechanism is tightly connected to the frame, the clamping mechanism is used to fix the cable, and the stretching mechanism is used to perform tensile detection on the cable.

[0006] The frame is used to provide stable support for each mechanism. When the bridge deck is blown by wind, it will shake, thereby causing the bridge cables to vibrate. This requires the bridge cables to have certain vibration and tensile resistance to ensure the overall safety of the bridge. Therefore, the bridge cables must be subjected to tensile resonance testing, and the vibration caused by wind must be simulated to fit the actual use environment and ensure the accuracy of the test. During the test, the cables are first cut to a suitable length, and then the cables are fixed to the test device through a clamping mechanism, and the stretching mechanism is started to drive the clamping mechanism to move, thereby performing a tensile test on the cables. When resonance testing is required, the wind simulation mechanism is started to simulate the vibration caused by the wind, and the vibration is transmitted to the cables. The deformation of the cables during vibration is detected to determine the vibration resistance of the cables.

[0007] Furthermore, the clamping mechanism includes an upper jaw and a lower jaw, the upper jaw is tightly connected to the stretching mechanism, and the lower jaw is tightly connected to the frame. A load sensor and a displacement sensor are provided on the upper jaw. The load sensor is used to measure the force applied to the cable, and the displacement sensor is used to measure the deformation of the cable.

[0008] The clamping mechanism fixes the cable at the detection position through the upper jaw and the lower jaw, so that the stretching mechanism drives the upper jaw to move, thereby stretching the cable, and detects the tension and deformation of the cable during stretching through the load sensor and displacement sensor integrated in the upper jaw. The load sensor and displacement sensor are connected to an external detection system to analyze the measured data to obtain accurate data.

[0009] Furthermore, the stretching mechanism includes a crossbeam and a screw nut assembly, the screw nut assembly is firmly connected to the frame, the screw nut assembly is transmission-connected to the crossbeam, the crossbeam is slidably connected to the frame, and the crossbeam is firmly connected to the upper clamp.

[0010] The screw nut assembly is the main power source of the stretching mechanism. During the stretching test, the screw nut assembly starts, driving the crossbeam to move up and down, thereby driving the cable fixed on the upper clamp to move, and then stretching the cable fixed on the clamping mechanism to perform a stretching test on it.

[0011] Furthermore, the wind simulation mechanism includes a vibration component, an adjustment component and a transmission component. The vibration component is fastened to the frame, the adjustment component is snap-connected to the transmission component, and the adjustment component is slidably connected to the vibration component.

[0012] The vibration component is used to simulate the vibration generated by the bridge when it is affected by wind. The amplitude of the vibration is then adjusted through the adjustment component, and the vibration is transmitted to the cable through the transmission component, driving the cable to vibrate together, so that the cable is subjected to different vibrations, thereby ensuring the accuracy of the detection.

[0013] Furthermore, the vibration assembly includes a protective shell, a driving motor, a toggle wheel, a lever, a return spring and an impact hammer. The protective shell is tightly connected to the frame, the driving motor is tightly connected to the protective shell, the output end of the driving motor is transmission-connected to the toggle wheel, the toggle wheel is transmission-connected to the lever, the lever is slidingly connected to the protective shell, the lever is Z-shaped, one end of the return spring is tightly connected to the side wall of the lever, the other end of the return spring is tightly connected to the inner wall of the protective shell, the impact hammer is tightly connected to the lever, the impact hammer is slidingly connected to the protective shell, and a vibration rod is provided at the output end of the impact hammer, which is tightly connected to the frame.

[0014] The protective shell is fixed on the frame to provide a stable foundation for the vibration component. The driving motor is the main power source of the vibration component. When simulating the vibration caused by wind, the driving motor is started to drive the toggle wheel to rotate. During the rotation of the toggle wheel, it will intermittently touch the Z-shaped lever, thereby pushing the lever to move to one side. The reset spring is compressed, and the impact hammer retreats under the drive of the lever. When the toggle wheel is away from the lever, the lever moves forward under the action of the elastic force of the reset spring, thereby driving the impact hammer to hit the outer wall of the vibration rod, thereby driving the vibration rod to vibrate, and as the toggle wheel rotates, the impact hammer will continuously hit the vibration rod at a fixed frequency, thereby driving the vibration rod to vibrate continuously at a certain frequency, and by adjusting the speed of the driving motor, the frequency of the impact hammer hitting the vibration rod can be adjusted, thereby realizing automatic adjustment of the vibration frequency.

[0015] Furthermore, the vibrating rod is provided with a plurality of contraction sections from bottom to top, and the diameters of the contraction sections decrease successively.

[0016] The vibrating rod will vibrate at a certain frequency driven by the impact hammer, and as the height of the vibrating rod increases and the diameter of the contraction section gradually decreases, due to the relatively small mass and stiffness of the contraction section, a larger speed is formed and a larger displacement is produced at each turning moment back and forth during the vibration, and the amplitude will continue to increase. Therefore, the higher the position of the contraction section on the vibrating rod, the greater the amplitude. By adjusting the position of the transmission component on the vibrating rod, the vibration amplitude transmitted to the cable can be automatically adjusted.

[0017] Furthermore, the adjustment component includes a support frame, a screw module, a slider, a guide sleeve, and a sliding rod. The support frame is tightly connected to the frame, the screw module is tightly connected to the support frame, the screw module is transmission-connected to the slider, the guide sleeve is tightly connected to the slider, the sliding rod is slidingly connected to the guide sleeve, an adjustment spring is provided on the sliding rod, an electromagnet is provided at the end of the sliding rod away from the guide sleeve, and the electromagnet is transmission-connected to the transmission component.

[0018] The support frame is fixed on the frame to provide stable support for the adjustment component. The screw module is used to drive the slider to move up and down along the support frame. When the position of the transmission component needs to be adjusted, the electromagnet is started and adsorbed on the transmission component. The adjustment spring is compressed and the slide bar moves along the guide sleeve in the direction of the transmission component, so that the slider and the transmission component are connected together. Then the screw module is started to drive the slider to move, thereby driving the transmission component to move, so as to adjust the position of the transmission component on the vibration rod, thereby automatically adjusting the vibration amplitude transmitted to the cable, and realizing self-adjustment of the simulated vibration amplitude; and after the transmission component moves to a suitable position, the electromagnet is powered off, and under the action of the elastic force of the adjustment spring, the electromagnet will move away from the transmission component, thereby avoiding the vibration being transmitted to the electromagnet and increasing the service life of the electromagnet.

[0019] Furthermore, the transmission component includes a moving ring, a connecting rod, a resonance rod and a vibration-guide rod. The moving ring is sleeved on the vibration rod, one end of the connecting rod is tightly connected to the moving ring, and the other end of the connecting rod is slidably connected to the resonance rod. Movable sleeves are provided at both ends of the support frame, the resonance rod is sleeved in the movable sleeves, the vibration-guide rod is tightly connected to the resonance rod, and an electric clamp is provided at the end of the vibration-guide rod away from the resonance rod. A number of electric push rods are arranged circumferentially of the moving ring, and the output ends of the several electric push rods are abutted against the vibration rod. An attraction magnet is provided on the connecting rod, and the facing surfaces of the attraction magnet and the electromagnet are opposite poles.

[0020] Under the action of the magnetic force of the electromagnet, according to the principle of opposites attract, the electromagnet will be adsorbed on the attracting magnet, thereby connecting the slider in the adjusting component and the connecting rod in the transmission component. When the moving ring in the transmission component moves to a suitable position of the vibration rod under the drive of the adjusting component, the electric push rod starts and abuts against the outer wall of the vibration rod, fixing the moving ring on the outside of the vibration rod. The vibration is transmitted to the resonance rod through the connecting rod. The resonance rod continuously vibrates on the constraint of the movable sleeve and transmits the vibration to the electric clamp through the vibration guide rod. The electric clamp can automatically clamp on the cable to be detected, thereby transmitting the vibration to the cable and driving the cable to vibrate. At this time, the deformation of the cable is detected by the displacement sensor to determine the vibration resistance of the cable.

[0021] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: by arranging a number of contraction sections with gradually decreasing diameters on the vibrating rod, since the mass and rigidity of the contraction sections are relatively small, a larger speed is formed and a larger displacement is produced at each turning moment back and forth during vibration, and the amplitude will continue to increase. Therefore, the higher the position of the contraction section on the vibrating rod, the larger the amplitude is. By adjusting the position of the transmission component on the vibrating rod, the automatic adjustment of the vibration amplitude transmitted to the cable can be achieved. By adjusting the rotational speed of the driving motor, the frequency of the impact hammer hitting the vibrating rod can be adjusted, thereby achieving automatic adjustment of the vibration frequency on the vibrating rod. The combination of the two realizes the automatic adjustment of the vibration frequency and amplitude transmitted to the cable, making the simulated wind vibration more realistic and improving the accuracy of detection.

[0022] The screw module is used to drive the slider to move up and down along the support frame. When the position of the transmission component needs to be adjusted, the electromagnet is started and adsorbed on the attraction magnet, thereby connecting the slider in the adjustment component with the connecting rod in the transmission component. The adjustment spring is compressed and the slide rod moves along the guide sleeve in the direction of the transmission component, so that the slider and the transmission component are connected together. Then the screw module is started to drive the slider to move, thereby driving the transmission component to move, so as to adjust the position of the transmission component on the vibration rod, thereby automatically adjusting the vibration amplitude transmitted to the cable, and realizing self-adjustment of the simulated vibration amplitude; and after the transmission component moves to a suitable position, the electromagnet is powered off, and under the action of the elastic force of the adjustment spring, the electromagnet will move away from the transmission component, thereby avoiding the vibration being transmitted to the electromagnet and increasing the service life of the electromagnet. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the wind simulation mechanism of the present invention; Figure 3 It is the orientation diagram of the wind simulation mechanism; Figure 4 is a schematic diagram of the vibration assembly; Figure 5 yes Figure 4 A partial enlarged view of the A direction; Figure 6 is a schematic diagram of the regulating component; Figure 7 yes Figure 6 A local B-direction enlarged view; In the figure: 1-frame, 2-clamping mechanism, 21-upper clamp, 22-lower clamp, 3-stretching mechanism, 31-crossbeam, 32-screw nut assembly, 4-wind simulation mechanism, 41-vibration assembly, 411-protective shell, 412-drive motor, 413-push wheel, 414-push rod, 415-reset spring, 416-impact hammer, 417-vibration rod, 42-adjustment assembly, 421-support frame, 4211-movable sleeve, 422-screw module, 423-slider, 424-guide sleeve, 425-slide rod, 426-adjustment spring, 427-electromagnet, 43-transmission assembly, 431-movable ring, 432-connecting rod, 433-resonance rod, 434-vibration guide rod, 435-electric clamp, 436-electric push rod, 437-attracting magnet. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] See also Figure 1-7 , the present invention provides a technical solution: The bridge tensile resonance detection device includes a frame 1, a clamping mechanism 2, a stretching mechanism 3, and a wind simulation mechanism 4. The clamping mechanism 2 is tightly connected to the frame 1, the stretching mechanism 3 is tightly connected to the clamping mechanism 2, and the wind simulation mechanism 4 is tightly connected to the frame 1. The clamping mechanism 2 is used to fix the cable, and the stretching mechanism 3 is used to perform tensile detection on the cable.

[0026] The frame 1 is used to provide stable support for each mechanism. When the bridge deck is blown by wind, it will shake, thereby causing the bridge cables to vibrate. This requires the bridge cables to have certain vibration and tensile resistance to ensure the overall safety of the bridge. Therefore, the bridge cables must be subjected to tensile resonance testing, and the vibration caused by wind must be simulated to fit the actual use environment and ensure the accuracy of the test. During the test, the cables are first cut into suitable lengths, and then the cables are fixed to the test device through the clamping mechanism 2, and the stretching mechanism 3 is started to drive the clamping mechanism 2 to move, thereby performing a tensile test on the cables. When resonance testing is required, the wind simulation mechanism 4 is started to simulate the vibration caused by the wind, and the vibration is transmitted to the cables. The deformation of the cables during vibration is detected to determine the vibration resistance of the cables.

[0027] The clamping mechanism 2 includes an upper jaw 21 and a lower jaw 22. The upper jaw 21 is tightly connected to the stretching mechanism 3, and the lower jaw 22 is tightly connected to the frame 1. A load sensor and a displacement sensor are provided on the upper jaw 21. The load sensor is used to measure the force applied to the cable, and the displacement sensor is used to measure the deformation of the cable.

[0028] The clamping mechanism 2 fixes the cable at the detection position through the upper jaw 21 and the lower jaw 22, so that the stretching mechanism 3 drives the upper jaw 21 to move, thereby stretching the cable, and detects the tension and deformation of the cable during stretching through the load sensor and displacement sensor integrated in the upper jaw 21. The load sensor and displacement sensor are connected to an external detection system to analyze the measured data to obtain accurate data.

[0029] The stretching mechanism 3 includes a crossbeam 31 and a screw nut assembly 32 . The screw nut assembly 32 is fastened to the frame 1 . The screw nut assembly 32 is transmission-connected to the crossbeam 31 . The crossbeam 31 is slidingly connected to the frame 1 . The crossbeam 31 is fastened to the upper clamp 21 .

[0030] The screw nut assembly 32 is the main power source of the stretching mechanism 3. During the stretching test, the screw nut assembly 32 is started, driving the crossbeam 31 to move up and down, thereby driving the cable fixed on the upper clamp 21 to move, and then stretching the cable fixed on the clamping mechanism 2 to perform a stretching test on it.

[0031] The wind simulation mechanism 4 includes a vibration component 41, an adjustment component 42 and a transmission component 43. The vibration component 41 is fastened to the frame 1, the adjustment component 42 is engaged with the transmission component 43, and the adjustment component 42 is slidably connected to the vibration component 41.

[0032] The vibration component 41 is used to simulate the vibration generated by the bridge when it is affected by wind, and then the amplitude of the vibration is adjusted by the adjustment component 42, and the vibration is transmitted to the cable through the transmission component 43, driving the cable to vibrate together, so that the cable is subjected to different vibrations, thereby ensuring the accuracy of the detection.

[0033] The vibration assembly 41 includes a protective shell 411, a driving motor 412, a toggle wheel 413, a lever 414, a return spring 415 and a hammer 416. The protective shell 411 is tightly connected to the frame 1, the driving motor 412 is tightly connected to the protective shell 411, the output end of the driving motor 412 is transmission-connected to the toggle wheel 413, the toggle wheel 413 is transmission-connected to the lever 414, the lever 414 is slidingly connected to the protective shell 411, the lever 414 is Z-shaped, one end of the return spring 415 is tightly connected to the side wall of the lever 414, the other end of the return spring 415 is tightly connected to the inner wall of the protective shell 411, the hammer 416 is tightly connected to the lever 414, the hammer 416 is slidingly connected to the protective shell 411, and the output end of the hammer 416 is provided with a vibration rod 417, and the vibration rod 417 is tightly connected to the frame 1.

[0034] The protective shell 411 is fixed on the frame 1 to provide a stable foundation for the vibration component 41. The driving motor 412 is the main power source of the vibration component 41. When simulating the vibration caused by wind, the driving motor 412 is started to drive the toggle wheel 413 to rotate. During the rotation process, the toggle wheel 413 will intermittently touch the Z-shaped lever 414, thereby pushing the lever 414 to move to one side, and the reset spring 415 is compressed. The impact hammer 416 retreats under the drive of the lever 414. When the toggle wheel 413 is away from the lever, the reset spring 415 is compressed. Under the action of the elastic force of the spring 415, the lever 414 moves forward, thereby driving the impact hammer 416 to hit the outer wall of the vibration rod 417, thereby driving the vibration rod 417 to vibrate, and as the driving wheel 413 rotates, the impact hammer 416 will continuously hit the vibration rod 417 at a fixed frequency, thereby driving the vibration rod 417 to continuously vibrate at a certain frequency, and by adjusting the rotation speed of the driving motor 412, the frequency of the impact hammer 416 hitting the vibration rod 417 can be adjusted, thereby realizing automatic adjustment of the vibration frequency.

[0035] The vibrating rod 417 is provided with a plurality of contraction sections from bottom to top, and the diameters of the contraction sections decrease successively.

[0036] The vibration rod 417 will vibrate at a certain frequency driven by the impact hammer 416, and as the height of the vibration rod 417 increases and the diameter of the contraction section gradually decreases, since the mass and stiffness of the contraction section are relatively small, a larger speed is formed and a larger displacement is produced at each turning moment back and forth during the vibration, and the amplitude will continue to increase. Therefore, the higher the position of the contraction section on the vibration rod 417, the greater the amplitude. By adjusting the position of the transmission component 43 on the vibration rod 417, the automatic adjustment of the vibration amplitude transmitted to the cable can be achieved.

[0037] The adjusting component 42 includes a support frame 421, a screw module 422, a slider 423, a guide sleeve 424, and a slide rod 425. The support frame 421 is tightly connected to the frame 1, the screw module 422 is tightly connected to the support frame 421, the screw module 422 is transmission-connected to the slider 423, the guide sleeve 424 is tightly connected to the slider 423, the slide rod 425 is slidingly connected to the guide sleeve 424, an adjusting spring 426 is sleeved on the slide rod 425, an electromagnet 427 is provided at one end of the slide rod 425 away from the guide sleeve 424, and the electromagnet 427 is transmission-connected to the transmission component 43.

[0038] The support frame 421 is fixed on the frame 1 to provide stable support for the adjustment component 42, and the screw module 422 is used to drive the slider 423 to move up and down along the support frame 421. When the position of the transmission component 43 needs to be adjusted, the electromagnet 427 is started and adsorbed on the transmission component 43, the adjusting spring 426 is compressed, and the slide bar 425 moves along the guide sleeve 424 in the direction of the transmission component 43, so that the slider 423 and the transmission component 43 are connected together, and then the screw module 422 is started to drive the slider 423 to move, thereby driving the transmission component 43 to move, so as to adjust the position of the transmission component 43 on the vibration rod 417, thereby automatically adjusting the vibration amplitude transmitted to the cable, and realizing the self-adjustment of the simulated vibration amplitude; and after the transmission component 43 moves to a suitable position, the electromagnet 427 is powered off, and under the elastic force of the adjusting spring 426, the electromagnet 427 will move away from the transmission component 43, thereby avoiding the vibration from being transmitted to the electromagnet 427, thereby improving the service life of the electromagnet 427.

[0039] The transmission component 43 includes a moving ring 431, a connecting rod 432, a resonance rod 433 and a vibration-guide rod 434. The moving ring 431 is sleeved on the vibration rod 417. One end of the connecting rod 432 is tightly connected to the moving ring 431, and the other end of the connecting rod 432 is slidably connected to the resonance rod 433. Movable sleeves 4211 are provided at both ends of the support frame 421. The resonance rod 433 is sleeved in the movable sleeves 4211. The vibration-guide rod 434 is tightly connected to the resonance rod 433. An electric clamp 435 is provided at one end of the vibration-guide rod 434 away from the resonance rod 433. A plurality of electric push rods 436 are arranged circumferentially of the moving ring 431. The output ends of the plurality of electric push rods 436 are in contact with the vibration rod 417. An attraction magnet 437 is provided on the connecting rod 432. The facing surfaces of the attraction magnet 437 and the electromagnet 427 are opposite poles.

[0040] Under the action of the magnetic force of the electromagnet 427, according to the principle of opposites attract, the electromagnet 427 will be adsorbed on the attracting magnet 437, thereby connecting the slider 423 in the adjusting component 42 and the connecting rod 432 in the transmission component 43 together; when the movable ring 431 in the transmission component 43 moves to a suitable position of the vibration rod 417 driven by the adjusting component 42, the electric push rod 436 is started and abuts against the outer wall of the vibration rod 417, fixing the movable ring 431 on the outer side of the vibration rod 417, and the vibration is transmitted to the resonance rod 433 through the connecting rod 432; the resonance rod 433 continuously vibrates under the constraint of the movable sleeve 4211, and transmits the vibration to the electric clamp 435 through the vibration guide rod 434; the electric clamp 435 can automatically clamp on the cable to be detected, thereby transmitting the vibration to the cable, driving the cable to vibrate; at this time, the deformation of the cable is detected by the displacement sensor, and the vibration resistance of the cable can be judged.

[0041] The working principle of the present invention is as follows: first, the cable is fixed to the detection device through the clamping mechanism 2, and the stretching mechanism 3 is started to drive the clamping mechanism 2 to move, so as to perform a stretching test on the cable. When resonance detection is required, the wind simulation mechanism 4 is started to simulate the vibration caused by the wind, and the vibration is transmitted to the cable. The deformation of the cable during vibration is detected, and the vibration resistance of the cable can be determined. When simulating the vibration caused by wind, the driving motor 412 is started to drive the toggle wheel 413 to rotate. During the rotation process, the toggle wheel 413 will intermittently touch the Z-shaped toggle lever 414, thereby pushing The lever 414 moves to one side, the return spring 415 is compressed, and the impact hammer 416 moves back under the drive of the lever 414. When the toggle wheel 413 is away from the lever, the lever 414 moves forward under the action of the elastic force of the return spring 415, thereby driving the impact hammer 416 to hit the outer wall of the vibrating rod 417, thereby driving the vibrating rod 417 to vibrate, and as the toggle wheel 413 rotates, the impact hammer 416 will continuously hit the vibrating rod 417 at a fixed frequency, thereby driving the vibrating rod 417 to continuously vibrate at a certain frequency, and by adjusting the speed of the driving motor 412, the vibration of the vibrating rod 417 can be controlled. The frequency at which the impact hammer 416 hits the vibration rod 417 can be adjusted to achieve automatic adjustment of the vibration frequency. The higher the position of the contraction section on the vibration rod 417, the greater the amplitude. By adjusting the position of the transmission component 43 on the vibration rod 417, the vibration amplitude transmitted to the cable can be automatically adjusted. Under the action of the magnetic force of the electromagnet 427, the electromagnet 427 will be adsorbed on the attraction magnet 437, thereby connecting the slider 423 in the adjustment component 42 with the connecting rod 432 in the transmission component 43. When the moving ring 431 in the transmission component 43 moves down driven by the adjustment component 42, the moving ring 431 in the transmission component 43 moves down driven by the adjustment component 42. After moving to the appropriate position of the vibration rod 417, the electric push rod 436 is started and abuts against the outer wall of the vibration rod 417, fixing the movable ring 431 on the outside of the vibration rod 417, and the vibration is transmitted to the resonance rod 433 through the connecting rod 432. The resonance rod 433 continuously vibrates under the constraint of the movable sleeve 4211, and transmits the vibration to the electric clamp 435 through the vibration guide rod 434. The electric clamp 435 can automatically clamp on the cable to be tested, thereby transmitting the vibration to the cable and driving the cable to vibrate. At this time, the deformation of the cable is detected by the displacement sensor to determine the vibration resistance of the cable.

[0042] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0043] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A bridge cable tensile resonance detection device with wind simulation function, characterized in that: The bridge tensile resonance detection device comprises a frame (1), a clamping mechanism (2), a stretching mechanism (3), and a wind force simulation mechanism (4); the clamping mechanism (2) is tightly connected to the frame (1); the stretching mechanism (3) is tightly connected to the clamping mechanism (2); the wind force simulation mechanism (4) is tightly connected to the frame (1); the clamping mechanism (2) is used to fix the cable; and the stretching mechanism (3) is used to perform tensile detection on the cable.

2. A bridge cable tensile resonance detection device with wind simulation function according to claim 1, characterized in that: The clamping mechanism (2) comprises an upper clamping jaw (21) and a lower clamping jaw (22), wherein the upper clamping jaw (21) is tightly connected to the stretching mechanism (3), and the lower clamping jaw (22) is tightly connected to the frame (1), and a load sensor and a displacement sensor are provided on the upper clamping jaw (21), wherein the load sensor is used to measure the force applied to the cable, and the displacement sensor is used to measure the deformation of the cable.

3. A bridge cable tensile resonance detection device with wind simulation function according to claim 2, characterized in that: The stretching mechanism (3) comprises a crossbeam (31) and a screw nut assembly (32); the screw nut assembly (32) is firmly connected to the frame (1); the screw nut assembly (32) is transmission-connected to the crossbeam (31); the crossbeam (31) is slidably connected to the frame (1); and the crossbeam (31) is firmly connected to the upper clamping jaw (21).

4. The bridge cable tensile resonance detection device with wind simulation function according to claim 1 is characterized in that: The wind force simulation mechanism (4) comprises a vibration component (41), an adjustment component (42) and a transmission component (43); the vibration component (41) is fastened to the frame (1); the adjustment component (42) is snap-connected to the transmission component (43); and the adjustment component (42) is slidably connected to the vibration component (41).

5. The bridge cable tensile resonance detection device with wind simulation function according to claim 4 is characterized in that: The vibration assembly (41) comprises a protective shell (411), a drive motor (412), a toggle wheel (413), a lever (414), a return spring (415) and a striking hammer (416); the protective shell (411) is firmly connected to the frame (1); the drive motor (412) is firmly connected to the protective shell (411); the output end of the drive motor (412) is transmission-connected to the toggle wheel (413); the toggle wheel (413) is transmission-connected to the lever (414); the lever (414) is transmission-connected to the The protective shell (411) is slidably connected, the lever (414) is Z-shaped, one end of the return spring (415) is firmly connected to the side wall of the lever (414), the other end of the return spring (415) is firmly connected to the inner wall of the protective shell (411), the impact hammer (416) is firmly connected to the lever (414), the impact hammer (416) is slidably connected to the protective shell (411), a vibration rod (417) is provided at the output end of the impact hammer (416), and the vibration rod (417) is firmly connected to the frame (1).

6. A bridge cable tensile resonance detection device with wind simulation function according to claim 5, characterized in that: The vibrating rod (417) is provided with a plurality of contraction sections from bottom to top, and the diameters of the contraction sections decrease sequentially.

7. The bridge cable tensile resonance detection device with wind simulation function according to claim 6 is characterized in that: The adjustment component (42) comprises a support frame (421), a screw module (422), a slider (423), a guide sleeve (424), and a slide rod (425); the support frame (421) is fixedly connected to the frame (1); the screw module (422) is fixedly connected to the support frame (421); the screw module (422) is transmission-connected to the slider (423); the guide sleeve (424) is fixedly connected to the slider (423); the slide rod (425) is slidably connected to the guide sleeve (424); an adjustment spring (426) is sleeved on the slide rod (425); an electromagnet (427) is provided at one end of the slide rod (425) away from the guide sleeve (424); and the electromagnet (427) is transmission-connected to the transmission component (43).

8. The bridge cable tensile resonance detection device with wind simulation function according to claim 7 is characterized in that: The transmission assembly (43) comprises a moving ring (431), a connecting rod (432), a resonance rod (433) and a vibration guide rod (434); the moving ring (431) is sleeved on the vibration rod (417); one end of the connecting rod (432) is tightly connected to the moving ring (431); the other end of the connecting rod (432) is slidably connected to the resonance rod (433); movable sleeves (4211) are provided at both ends of the support frame (421); the resonance rod (433) is sleeved in the movable sleeves (4211); ), the vibration guide rod (434) is tightly connected to the resonance rod (433), an electric clamp (435) is provided at one end of the vibration guide rod (434) away from the resonance rod (433), a plurality of electric push rods (436) are arranged circumferentially of the moving ring (431), the output ends of the plurality of electric push rods (436) are in contact with the vibration rod (417), an attraction magnet (437) is provided on the connecting rod (432), and the facing surfaces of the attraction magnet (437) and the electromagnet (427) are opposite poles.

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