A bridge deck buffer type steel temporary bridge bearing capacity detection device

Abstract

The present invention discloses a bridge deck buffer type steel temporary bridge bearing capacity detection device, which specifically relates to the technical field of bridge bearing capacity detection, including a test bench, the upper end of the test bench is fixedly connected with a fixed seat, the upper end of the test bench is provided with a mobile component, the middle position of the mobile component is provided with a static bearing test group, the interior of the static bearing test group is provided with a dynamic bearing test group, the upper end of the static bearing test group is provided with an impact component, and the rear side of the static bearing test group is provided with a cleaning component. The present invention realizes dynamic and static dual detection of the bearing capacity of the steel temporary bridge through the coordination between the components, from static dead weight and constant load to simulation of dynamic vehicle driving vibration and sudden collision, to obtain rich and accurate structural response data of the steel temporary bridge under different working conditions, and realizes real-time cleaning and detection of the steel temporary bridge, and realizes real-time monitoring and evaluation of the health status of the bridge deck structure during the detection process.

Description

Technical Field

[0001] The invention relates to the technical field of bridge bearing capacity detection, and in particular to a bearing capacity detection device for a deck buffer type steel temporary bridge. Background Art

[0002] Steel temporary bridges are widely used in many fields such as bridge construction, road repair and disaster relief. They are key temporary facilities to ensure smooth traffic. Among them, the deck-buffered steel temporary bridge has a buffer device between the bridge deck and the supporting structure, such as rubber pads and springs, which can effectively alleviate the vibration and impact of vehicle driving, reduce structural fatigue, enhance the ability to cope with sudden impacts, and ensure safe operation under complex working conditions. For steel temporary bridges, bearing capacity is related to safety. They need to bear their own weight and various dynamic and static loads. Insufficient bearing capacity can easily cause serious accidents such as deformation and collapse of the bridge body. Therefore, accurate detection and evaluation are extremely necessary. With the improvement of engineering and rescue requirements for the safety and detection efficiency of steel temporary bridges, traditional methods can no longer meet the needs.

[0003] Chinese patent announcement number CN209945666U discloses a bridge bearing capacity detection device, including a highway bridge, a flatbed truck is provided on the upper surface of the highway bridge, a counterweight stone is provided on the upper surface of the flatbed truck, a baffle is fixedly connected to one side of the flatbed truck, a control cabinet is fixedly connected to the other side of the flatbed truck, a fixed plate is fixedly connected to one side of the control cabinet, and a support frame is movably installed on one side of the fixed plate. The bridge bearing capacity detection device can play the role of moving and detecting by providing a flatbed truck and wheels, can exert pressure on the highway bridge by providing a counterweight stone, so as to test the bearing capacity, can play the role of control and monitoring by providing a control cabinet, can provide electricity and hydraulic pressure by providing a display and a camera, can achieve the effect of observing the bottom surface of the highway bridge by providing a fixed plate and a support frame;

[0004] However, the above-mentioned device can only simulate a single or a few working conditions during use, and it is difficult to cover the actual complex and changeable environment and load. The test results are difficult to reflect the actual performance and load-bearing change rules. Summary of the invention

[0005] The main purpose of the present invention is to provide a bridge deck buffer type steel temporary bridge bearing capacity detection device, which can effectively solve the problem that it can only simulate a single or a few working conditions and is difficult to cover the actual complex and changeable environment and load problems.

[0006] To achieve the above object, the technical solution adopted by the present invention is:

[0007] A device for detecting the bearing capacity of a bridge deck buffer type steel temporary bridge comprises a test bench, wherein a fixed seat is fixedly connected to the upper end of the test bench, sliding grooves are provided on both sides of the upper end of the test bench, and limit rods are fixedly connected to the interiors of the two sliding grooves, a moving component is arranged at the upper end of the test bench, a static bearing test group is arranged at the middle position of the moving component, a dynamic bearing test group is arranged inside the static bearing test group, an impact component is arranged at the upper end of the static bearing test group, and a cleaning component is arranged at the rear side of the static bearing test group.

[0008] Preferably, the moving assembly includes a hydraulic device fixedly mounted on an outer surface of a fixed seat, the output end of the hydraulic device is fixedly connected to a connecting seat, the left and right ends of the connecting seat are fixedly connected to connecting frames, both ends of the connecting seat are fixedly connected to a fixing ring, a limiting groove is provided on one side of the two fixing rings close to each other, a lifting seat is provided at the lower end of the two fixing rings, a sliding block is fixedly connected to the lower end of the two lifting seats, and the inner surfaces of the two sliding blocks are slidably connected to the two limiting rods.

[0009] Preferably, the static load-bearing test group includes a load-bearing roller rotatably connected to the inner surfaces of two limit grooves, the upper ends of the two fixed rings are fixedly connected to a fixed seat 2, and the lower end of the fixed seat 2 is provided with a plurality of hydraulic devices 2.

[0010] Preferably, the dynamic load-bearing test group includes a motor fixedly mounted on the outer surface of the left connecting frame, the output end of the motor is fixedly connected to a rotating shaft 1, the outer surface of the rotating shaft 1 is rotatably connected to a fixed ring 1, and the two fixed rings 1 are fixedly connected to a fixed ring 2 on one side close to each other, the outer surface of the rotating shaft 1 is rotatably connected to the fixed ring 2, and the two fixed rings 2 are provided with a limiting groove 2 on one side close to each other.

[0011] Preferably, gear 1 is fixedly connected to the left and right sides of the outer surface of the rotating shaft 1, the two sides of the gear 1 that are far away from each other are rotatably connected to the two fixed rings 2, the outer surfaces of the two gear 1s are meshingly connected to the two gear 2s, the sides of the two gear 2s on different sides that are close to each other are commonly fixedly connected to the rotating shaft 2, the two ends of the two rotating shafts 2 are slidably connected to the two limit grooves 2, the left and right sides of the outer surface of the rotating shaft 1 are fixedly connected to the connecting seat 2, the two ends of the two connecting seats 2 are rotatably connected to the rotating shaft 2, the outer surfaces of the two rotating shafts 2 are fixedly connected to eccentric blocks, and the outer surfaces of the eccentric blocks are movably connected to the load-bearing roller.

[0012] Preferably, the impact assembly includes a belt transmission mechanism 1 fixedly connected to the left and right ends of a rotating shaft 1, the upper end cabinets of the two belt transmission mechanisms 1 are fixedly connected to a rotating shaft 3, the two ends of the rotating shaft 3 are rotatably connected to two connecting frames, the outer surface of the rotating shaft 3 is fixedly connected to three rotating seats, and the inner surfaces of the three rotating seats are rotatably connected to pulleys.

[0013] Preferably, the upper end of the connecting seat one is fixedly connected to three supporting seats one, the upper ends of the three supporting seats one are rotatably connected to a rotating seat one, the lower ends of the three rotating seats one are fixedly connected to a toggle block, the outer surfaces of the three toggle blocks are respectively slidably connected to the pulley, the front ends of the three rotating seats one are fixedly connected to an impact block, the upper ends of the three impact blocks are fixedly connected to a clamping seat one, the inner surfaces of the three clamping seats one are rotatably connected to a rotating block one, the upper ends of the three rotating blocks one are fixedly connected to telescopic rods, the upper ends of the three rotating blocks one are fixedly connected to springs, and the three springs are sleeved on the outer surfaces of the three telescopic rods.

[0014] Preferably, the rear sides of the three support seats one are fixedly connected to the support seat two, the front ends of the three support seats two are fixedly connected to the clamping seat two, the inner surfaces of the three clamping seats two are rotatably connected to the rotating blocks two, and the lower ends of the three rotating blocks two are fixedly connected to the three telescopic rods.

[0015] Preferably, the cleaning assembly includes a rotating shaft four rotatably connected to a side of the two lifting seats that are away from each other, the outer surfaces of the two rotating shafts four are fixedly connected to gears three, both sides of the upper end of the test bench are fixedly connected to racks, the outer surfaces of the two gears three are meshingly connected to the racks, the ends of the two rotating shafts four that are away from each other are fixedly connected to belt transmission mechanisms two, the ends of the two belt transmission mechanisms two that are away from the rotating shaft four are commonly fixedly connected to a bidirectional screw, the lower end of the connecting seat one is fixedly connected to two limit blocks, the outer surface of the bidirectional screw is rotatably connected to the limit block, the outer surface of the bidirectional screw is rotatably connected to a sliding sleeve, the upper end of the sliding sleeve is slidably connected to the connecting seat one, and the lower end of the sliding sleeve is provided with a cleaning brush.

[0016] Preferably, the detection assembly includes a connection seat three fixedly connected to the rear end of the limit block, and an infrared scanner is provided at the lower end of the connection seat three.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention realizes the dynamic and static dual detection of the bearing capacity of the steel temporary bridge through the cooperation between the mobile component, the static bearing test group, the dynamic bearing test group and the impact component. From static dead weight and constant load to simulation of dynamic vehicle driving vibration and sudden impact, rich and accurate structural response data of the steel temporary bridge under different working conditions are obtained, so as to accurately judge its bearing capacity and safety in a complex actual environment. The real-time cleaning and detection of the steel temporary bridge are realized by the cooperation of the mobile component, the cleaning component and the detection component. The timely cleaning of the cleaning component ensures the cleanliness of the detection surface of the infrared scanner, improves the detection accuracy, and realizes the real-time monitoring and evaluation of the health status of the bridge deck structure during the bearing capacity detection process.

[0019] 2. The present invention realizes the dual detection of dynamic and static load-bearing capacity of buffered steel temporary bridges through the coordination between structures. In the initial stage of the test, the second hydraulic device can slowly load the steel temporary bridge model point by point and step by step, and accurately measure the deformation of each part under static load. Subsequently, the cooperation of the mobile component, the dynamic load-bearing test group and the impact component is used to simulate the continuous vibration load that the actual steel temporary bridge is subjected to during vehicle driving and the sudden impact events that the steel temporary bridge may encounter during use. The load-bearing capacity of the steel temporary bridge under different working conditions is evaluated in many aspects. This combined dynamic and static evaluation method can facilitate the comparative analysis of dynamic and static monitoring data in the later stage, so as to deeply understand the structural performance change law of the steel temporary bridge during the dynamic and static load conversion process, and make the conclusion more accurate.

[0020] 3. The present invention uses a cleaning component and a detection component to perform real-time cleaning and detection of the steel temporary bridge when the device is moving, and promptly removes impurities such as dust and debris generated during the test process and tiny particles that may fall off due to impact on the bridge deck, so as to avoid the problem that impurities affect the subsequent infrared scanner's detection accuracy of the integrity of the bridge deck structure. On the cleaned bridge deck, the infrared scanner can also more accurately emit and receive infrared signals, and accurately detect whether there are deformations, cracks and other structural defects on the bridge deck by analyzing changes in parameters such as the intensity and phase of the reflected signal, and generate corresponding detection images or data reports, thereby realizing real-time monitoring and evaluation of the health status of the bridge deck structure during the load-bearing capacity detection process. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a structural schematic diagram of the mobile assembly of the present invention;

[0023] Figure 3 It is a partial structural schematic diagram of the mobile assembly of the present invention;

[0024] Figure 4 It is a structural schematic diagram of the dynamic load-bearing test group of the present invention;

[0025] Figure 5 It is a partial structural schematic diagram of the dynamic load-bearing test group of the present invention;

[0026] Figure 6 It is a schematic diagram of the structure of the impact assembly of the present invention;

[0027] Figure 7 It is a partial structural schematic diagram of the impact assembly of the present invention;

[0028] Figure 8 For the present invention Figure 6 The enlarged structural diagram at B in FIG.

[0029] Fig. 9 It is a schematic diagram of the structure of the cleaning component and the detection component of the present invention;

[0030] Fig.10 For the present invention Figure 3 A in the figure is an enlarged structural diagram.

[0031] In the figure: 1. test bench; 11. fixed seat 1; 12. sliding slot; 13. limit rod; 2. moving assembly; 21. hydraulic device 1; 22. connecting seat 1; 221. connecting frame; 23. fixed ring 1; 231. limit slot 1; 24. lifting seat; 25. sliding block; 3. static load test group; 31. load-bearing roller; 32. fixed seat 2; 33. hydraulic device 2; 4. dynamic load test group; 41. motor; 42. rotating shaft 1; 43. fixed ring 2; 431. limit slot 2; 44. gear 1; 45. gear 2; 46. rotating shaft 2; 461. eccentric block; 47. connecting seat 2; 5. impact assembly; 52. Belt drive mechanism one; 53. Rotating shaft three; 54. Rotating seat; 55. Pulley; 56. Support seat one; 57. Rotating seat one; 571. Toggle block; 58. Impact block; 59. Card seat one; 591. Rotating block one; 510. Telescopic rod; 511. Spring; 512. Support seat two; 513. Card seat two; 514. Rotating block two; 6. Cleaning component; 61. Rotating shaft four; 62. Gear three; 621. Rack; 63. Belt drive mechanism two; 64. Bidirectional screw; 65. Limit block; 66. Sliding sleeve; 67. Cleaning brush; 7. Detection component; 71. Connecting seat three; 72. Infrared scanner. DETAILED DESCRIPTION

[0032] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0033] Embodiment 1, as Figure 1 , Figure 2 and Figure 4 As shown, a bridge deck buffer type steel temporary bridge load-bearing capacity detection device comprises a test bench 1, the upper end of the test bench 1 is fixedly connected with a fixed seat 11, sliding grooves 12 are provided on both sides of the upper end of the test bench 1, and the interiors of the two sliding grooves 12 are fixedly connected with limit rods 13, a moving component 2 is arranged at the upper end of the test bench 1, a static load-bearing test group 3 is arranged at the middle position of the moving component 2, a dynamic load-bearing test group 4 is arranged inside the static load-bearing test group 3, an impact component 5 is arranged at the upper end of the static load-bearing test group 3, and a cleaning component 6 is arranged at the rear side of the static load-bearing test group 3.

[0034] During the operation of this embodiment, through the coordination of the structures among the mobile component 2, the static load-bearing test group 3, the dynamic load-bearing test group 4 and the impact component 5, the dynamic and static dual detection of the bearing capacity of the steel temporary bridge is realized. From static dead weight and constant load to simulation of dynamic vehicle driving vibration and sudden impact, rich and accurate structural response data of the steel temporary bridge under different working conditions are obtained, so as to accurately judge its bearing capacity and safety in a complex actual environment. In addition, the coordination among the mobile component 2, the cleaning component 6 and the detection component 7 is used to realize real-time cleaning and detection of the steel temporary bridge. The timely cleaning of the cleaning component 6 ensures the cleanliness of the detection surface of the infrared scanner, improves the detection accuracy, and realizes real-time monitoring and evaluation of the health status of the bridge deck structure during the bearing capacity detection process.

[0035] Embodiment 2: Based on Embodiment 1, this embodiment is to achieve the effect of all-round detection of the bearing capacity of the steel temporary bridge from static to dynamic.

[0036] See also Figure 2-8 The moving component 2 includes a hydraulic device 21 fixedly installed on the outer surface of a fixed seat 11, the output end of the hydraulic device 21 is fixedly connected to a connecting seat 22, the left and right ends of the connecting seat 22 are fixedly connected to connecting frames 221, both ends of the connecting seat 22 are fixedly connected to a fixing ring 23, and the sides of the two fixing rings 23 close to each other are provided with a limiting groove 231, the lower ends of the two fixing rings 23 are provided with a lifting seat 24, the lower ends of the two lifting seats 24 are fixedly connected to sliding blocks 25, and the inner surfaces of the two sliding blocks 25 are slidably connected to the two limit rods 13.

[0037] Specifically, the sliding groove 12 and the limiting rod 13 are convenient for limiting the sliding block 25 and the lifting seat 24, so that they can stably move forward and backward under the push of the hydraulic device 21. The lifting seat 24 is internally provided with a hydraulic cylinder, which can adjust the height of the fixing ring 23, so as to facilitate the bearing capacity test of steel temporary bridges of different heights.

[0038] See also Figure 2 and Figure 3The static load-bearing test group 3 includes a load-bearing roller 31 rotatably connected to the inner surfaces of two limit grooves 231, the upper ends of the two fixed rings 23 are fixedly connected to a fixed seat 232, and the lower end of the fixed seat 23 is provided with a plurality of hydraulic devices 233.

[0039] Furthermore, the load-bearing roller 31 mentioned above will also vibrate at a high frequency while rotating on the inner surface of the limiting groove 231, so the inner surface diameter of the limiting groove 231 is larger than the edge thickness of the load-bearing roller 31, which facilitates the subsequent vibration of the load-bearing roller 31.

[0040] Furthermore, a number of hydraulic devices 2 33 can move downward to resist the load-bearing roller 31, driving the load-bearing roller 31 to press down the steel temporary bridge. The hydraulic device 1 21 can move the load-bearing roller 31 to different positions of the steel temporary bridge, gradually increasing the pressure with very small load increments, and accurately determining the critical load value when the part begins to show obvious deformation or failure, thereby measuring the bearing limit of a key part of the steel temporary bridge and providing a reliable comparison benchmark for subsequent dynamic loading tests.

[0041] Furthermore, a proportionally manufactured buffer-type steel temporary bridge model is placed on the surface of the test bench 1 and fixed synchronously with an external device. Then, the hydraulic device 21 is started to move the connecting seat 22, the fixing ring 23, the load-bearing roller 31 and other structures to the top of the steel temporary bridge model. Then, the hydraulic cylinder inside the lifting seat 24 is controlled to drive the fixing ring 23 to descend, so that the surface of the load-bearing roller 31 is placed above the steel temporary bridge. Then, the fixing ring 23 continues to descend so that the load-bearing roller 31 is located in the middle position of the limiting groove 231, that is, a certain gap is retained at the upper and lower ends of the limiting groove 231. At this time, starting several hydraulic devices 233 can drive the load-bearing roller 31 to press down, and measure the load-bearing limit of a key part of the steel temporary bridge in a static state.

[0042] See also Figure 2-5 The dynamic load-bearing test group 4 includes a motor 41 fixedly mounted on the outer surface of the left connecting frame 221, the output end of the motor 41 is fixedly connected with a rotating shaft 42, the outer surface of the rotating shaft 42 is rotatably connected to a fixing ring 23, the two fixing rings 23 are fixedly connected with a fixing ring 2 43 on the sides close to each other, the outer surface of the rotating shaft 42 is rotatably connected to the fixing ring 2 43, and the two fixing rings 2 43 are provided with a limiting groove 2 431 on the sides close to each other.

[0043] Gears 1 44 are fixedly connected to the left and right sides of the outer surface of the rotating shaft 1 42, and the sides of the two gears 1 44 that are away from each other are rotatably connected to the two fixed rings 2 43. The outer surfaces of the two gears 1 44 are meshed with two gears 2 45, and the sides of the two gears 2 45 on different sides that are close to each other are commonly fixedly connected to a rotating shaft 2 46. Both ends of the two rotating shafts 2 46 are slidingly connected to the two limit grooves 2 431. The left and right sides of the outer surface of the rotating shaft 1 42 are fixedly connected to connecting seats 2 47, and both ends of the two connecting seats 2 47 are rotatably connected to the rotating shaft 2 46. The outer surfaces of the two rotating shafts 2 46 are fixedly connected to eccentric blocks 461, and the outer surfaces of the eccentric blocks 461 are movably connected to the load-bearing roller 31.

[0044] Furthermore, the fixing ring 2 43 and the limiting groove 2 431 mentioned above are mainly used to limit the gear 2 45 and the rotating shaft 2 46. When the gear 2 45 is meshed with the gear 1 44 and rotates, it will also revolve around the gear 1 44 with the gear 1 44 as the axis under the drive of the connecting seat 2 47, so that the eccentric block 461 can revolve and rotate synchronously, thereby continuously hitting the inner wall of the load-bearing roller 31, causing the load-bearing roller 31 to vibrate. According to the rotation speed of the rotating shaft 1 42, the vibration frequency of the load-bearing roller 31 can be adjusted, which highly simulates the continuous vibration load that the actual steel temporary bridge is subjected to during vehicle driving.

[0045] Furthermore, after the static bearing capacity of the steel temporary bridge is tested, the pressure on the load-bearing roller 31 is stopped, and the hydraulic device 21 is started to push the connecting seat 22 and the fixing ring 23 to move forward and backward as a whole, and then the motor 41 is started to drive the rotating shaft 42 to rotate, and the rotating shaft 42 drives the gear 44 and the connecting seat 2 47 to rotate together, so that the connecting seat 2 47 drives the gear 2 45 and the rotating shaft 2 46 to revolve around the gear 1 44 as the axis, and at the same time, the gear 2 45 is meshed with the gear 1 44, and the gear 2 45 rotates, so that the eccentric block 461 can revolve and rotate synchronously, thereby continuously hitting the inner wall of the load-bearing roller 31, causing the load-bearing roller 31 to vibrate, simulating the continuous vibration load that the actual steel temporary bridge is subjected to during vehicle driving.

[0046] See also Figure 6-8 The impact assembly 5 includes a belt transmission mechanism 52 fixedly connected to the left and right ends of the rotating shaft 42, the upper end cabinets of the two belt transmission mechanisms 52 are fixedly connected to the rotating shaft 3 53, the two ends of the rotating shaft 3 53 are rotatably connected to the two connecting frames 221, the outer surface of the rotating shaft 3 53 is fixedly connected to three rotating seats 54, and the inner surfaces of the three rotating seats 54 are rotatably connected to pulleys 55.

[0047] Furthermore, the belt transmission mechanism 1 52 mentioned above is composed of two pulleys and a belt. When the belt transmission mechanism 1 52 rotates, it can drive the three sets of rotating seats 54 and the pulley 55 to rotate continuously.

[0048] The upper end of the connecting seat 22 is fixedly connected to three supporting seats 56, and the upper ends of the three supporting seats 56 are rotatably connected to a rotating seat 57. The lower ends of the three rotating seats 57 are fixedly connected to a toggle block 571, and the outer surfaces of the three toggle blocks 571 are respectively slidably connected to the pulley 55. The front ends of the three rotating seats 57 are fixedly connected to impact blocks 58, and the upper ends of the three impact blocks 58 are fixedly connected to a clamping seat 59, and the inner surfaces of the three clamping seats 59 are rotatably connected to a rotating block 591, and the upper ends of the three rotating blocks 591 are fixedly connected to telescopic rods 510, and the upper ends of the three rotating blocks 591 are fixedly connected to springs 511, and the three springs 511 are sleeved on the outer surfaces of the three telescopic rods 510.

[0049] Furthermore, when the pulley 55 rotates to the upper side and contacts the toggle block 571, the pulley 55 will briefly lift the entire rotating seat 57 to lift the impact block 58. When the pulley 55 is separated from the toggle block 571, the impact block 58 will fall due to the rebound of the spring 511 and hit the steel temporary bridge surface. The impact block 58 has the characteristics of large concentrated force and short action time, and can effectively simulate the sudden impact events that the steel temporary bridge may encounter during use, such as the accidental fall of heavy objects and the impact force generated by emergency braking of vehicles. A groove is provided at the top of the support seat 56, and the rear end of the rotating seat 57 can rotate in this groove, and the telescopic rod 510 can limit the spring 511 to allow the spring 511 to be stably extended and retracted.

[0050] Furthermore, when the rotating shaft 42 rotates, it can drive the belt transmission mechanism 52 to rotate together, so that the rotating shaft 3 53, the rotating seat 54 and the pulley 55 rotate together. During the rotation process, the pulley 55 will continuously push the toggle block 571 upward, thereby driving the rotating seat 57 and the impact block 58 to be lifted upward as a whole. When the pulley 55 is separated from the toggle block 571, the rotating seat 57 and the impact block 58 will directly rebound due to the elastic force of the spring 511, so that the impact block 58 hits the surface of the steel temporary bridge, simulating the sudden impact events that the steel temporary bridge may encounter during use, thereby realizing the simulation of impact loads of different intensities and types.

[0051] Therefore, this scheme realizes the dual detection of dynamic and static load-bearing capacity of buffered steel temporary bridge through the coordination between various structures. In the initial stage of the test, the hydraulic device 2 33 can slowly load the steel temporary bridge model point by point and step by step, and accurately measure the deformation of each part under static load. Subsequently, the cooperation of the mobile component 2, the dynamic load-bearing test group 4 and the impact component 5 is used to simulate the continuous vibration load that the actual steel temporary bridge is subjected to during vehicle driving and the sudden impact events that the steel temporary bridge may encounter during use. The load-bearing capacity of the steel temporary bridge under different working conditions is evaluated in many aspects. This combined dynamic and static evaluation method can facilitate the comparative analysis of dynamic and static monitoring data in the later stage, so as to deeply understand the structural performance change law of the steel temporary bridge during the dynamic and static load conversion process, so as to make the conclusion more accurate.

[0052] Embodiment 3: Based on Embodiments 1 and 2, this embodiment is to achieve the effect of simultaneously cleaning and testing when measuring the bearing capacity of the steel temporary bridge.

[0053] See also Figure 3 , Figure 9-10 The cleaning assembly 6 includes a rotating shaft four 61 rotatably connected to the sides of the two lifting seats 24 that are away from each other, the outer surfaces of the two rotating shafts four 61 are fixedly connected to gear three 62, both sides of the upper end of the test bench 1 are fixedly connected to racks 621, the outer surfaces of the two gears three 62 are meshed with the racks 621, the ends of the two rotating shafts four 61 that are away from each other are fixedly connected to belt transmission mechanisms two 63, the ends of the two belt transmission mechanisms two 63 that are away from the rotating shaft four 61 are commonly fixedly connected to a bidirectional screw rod 64, the lower end of the connecting seat one 22 is fixedly connected to two limit blocks 65, the outer surface of the bidirectional screw rod 64 is rotatably connected to the limit block 65, the outer surface of the bidirectional screw rod 64 is rotatably connected to a sliding sleeve 66, the upper end of the sliding sleeve 66 is slidably connected to the connecting seat one 22, and the lower end of the sliding sleeve 66 is provided with a cleaning brush 67.

[0054] Specifically, the belt transmission mechanism 2 63 mentioned above is composed of two pulleys with different diameters and a belt, wherein the pulley fixedly connected to the rotating shaft 4 61 has a larger diameter, and the pulley fixedly connected to the bidirectional screw 64 has a smaller diameter, so the rotation speed of the bidirectional screw 64 is faster.

[0055] Furthermore, the connecting seat 22 can limit the sliding sleeve 66, and the rotation of the bidirectional screw 64 can make the sliding sleeve 66 move back and forth continuously, so that the cleaning brush 67 can promptly remove dust, debris and impurities such as tiny particles that may fall off due to impact on the bridge deck generated during the test process, so as to avoid affecting the subsequent infrared scanner 72's detection accuracy of the integrity of the bridge deck structure.

[0056] Furthermore, when the fixed ring 23 moves back and forth as a whole, the gear 3 62 will mesh with the rack 621, thereby causing the belt drive mechanism 2 63 to rotate, driving the bidirectional screw 64 to rotate together. Because the diameters of the two pulleys are different, the rotation speed of the bidirectional screw 64 is faster, so that the sliding sleeve 66 and the cleaning brush 67 continuously make a cleaning motion back and forth, promptly removing dust and debris generated by the test process on the bridge deck, as well as impurities such as tiny particles that may fall off due to impact.

[0057] See also Fig. 9 The detection component 7 includes a connection seat 3 71 fixedly connected to the rear end of the limit block 65, and an infrared scanner 72 is arranged at the lower end of the connection seat 3 71.

[0058] Furthermore, the infrared scanner 72 mentioned above is a conventional technical means in the prior art, and its working principle is as follows: there is an infrared emitting source inside the infrared scanner 72, which emits an infrared beam to the surface of the steel temporary bridge. Infrared light is an invisible light with a longer wavelength than visible light. When the infrared light irradiates the surface of the steel temporary bridge, it will be reflected, and the infrared scanner 72 is equipped with an infrared receiver for receiving the reflected infrared light;

[0059] For a flat and undamaged steel bridge surface, infrared rays will be reflected back in a relatively regular manner, and the infrared signal intensity and time received by the receiver are relatively stable. When there is deformation or cracks on the surface of a steel bridge, the reflected infrared rays will change in angle, intensity and time. By analyzing the changes in the position and intensity of these reflected rays, it can be inferred that there is a concave deformation or the length and depth of the cracks in the area. During the design phase of a steel bridge, there will be a series of standards for deformation and crack control. By comparing the data detected in real time by the infrared scanner with these standards, the current bearing capacity of the steel bridge can be judged. When the detected deformation exceeds the maximum deformation value allowed by the design, or the length and depth of the cracks reach the critical value that may cause structural failure, it can be judged that the bearing capacity of the steel bridge has been seriously affected.

[0060] Furthermore, the infrared scanner 72 moves with the load-bearing roller 31 to monitor the surface of the steel temporary bridge subjected to static and dynamic bearing capacity tests in real time, thereby avoiding the influence of the re-deposition of impurities or changes in the structural state caused by the time interval on the test results. When the infrared scanner 72 detects uniform deformation or cracks on the surface of the steel temporary bridge, the bearing capacity is evaluated by measuring the size of the deformation. If the deformation is within the allowable range, it means that the steel temporary bridge still has sufficient bearing margin under the current load; if the deformation exceeds the allowable value, it may indicate that the steel temporary bridge has approached or exceeded its bearing limit. For shallower and shorter cracks, the bearing capacity can be judged by analyzing its development trend. If the cracks do not expand significantly during the subsequent loading process, it means that the steel temporary bridge can still maintain a certain stability under the current bearing level; but if the cracks continue to expand with the increase of the load, especially when the crack depth reaches a certain level, such as penetrating the cross-section of a key component, this will greatly reduce the bearing capacity of the steel temporary bridge.

[0061] Therefore, this solution uses the cleaning component 6 and the detection component 7 to clean and detect the steel temporary bridge in real time when the device is moving, and promptly removes impurities such as dust, debris, and tiny particles that may fall off due to impact on the bridge deck caused by the testing process, so as to avoid the problem that impurities affect the subsequent infrared scanner 72's detection accuracy of the integrity of the bridge deck structure. On the cleaned bridge deck, the infrared scanner 72 can also emit and receive infrared signals more accurately, and by analyzing the changes in parameters such as the intensity and phase of the reflected signal, it can accurately detect whether there are deformations, cracks, and other structural defects on the bridge deck, and generate corresponding detection images or data reports, thereby realizing real-time monitoring and evaluation of the health status of the bridge deck structure during the load-bearing capacity detection process.

[0062] The device can be used to test the buffer-type steel temporary bridge produced in proportion to the bridge deck.

[0063] It should be noted that the specific installation method, circuit connection method and control method of the hydraulic device 1 21, hydraulic device 2 33, motor 41 and infrared scanner 72 used in the present invention are all conventional designs and will not be elaborated in detail in the present invention.

[0064] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A device for testing the bearing capacity of a deck-buffered steel temporary bridge, comprising a test bench (1), characterized in that: The upper end of the test bench (1) is fixedly connected to a fixed seat (11), both sides of the upper end of the test bench (1) are provided with sliding grooves (12), the interiors of the two sliding grooves (12) are fixedly connected to limit rods (13), the upper end of the test bench (1) is provided with a moving component (2), a static load-bearing test group (3) is provided in the middle position of the moving component (2), a dynamic load-bearing test group (4) is provided inside the static load-bearing test group (3), an impact component (5) is provided at the upper end of the static load-bearing test group (3), and a cleaning component (6) is provided at the rear side of the static load-bearing test group (3).

2. The device for detecting the bearing capacity of a deck-buffered steel temporary bridge according to claim 1 is characterized in that: The moving assembly (2) comprises a hydraulic device (21) fixedly mounted on the outer surface of a fixed seat (11); the output end of the hydraulic device (21) is fixedly connected to a connecting seat (22); the left and right ends of the connecting seat (22) are fixedly connected to connecting frames (221); the two ends of the connecting seat (22) are fixedly connected to a fixing ring (23); the two sides of the two fixing rings (23) close to each other are provided with a limiting groove (231); the lower ends of the two fixing rings (23) are provided with a lifting seat (24); the lower ends of the two lifting seats (24) are fixedly connected to a sliding block (25); the inner surfaces of the two sliding blocks (25) are slidably connected to the two limiting rods (13).

3. The device for detecting the bearing capacity of a deck-buffered steel temporary bridge according to claim 2 is characterized in that: The static load-bearing test group (3) comprises a load-bearing roller (31) rotatably connected to the inner surfaces of two limit grooves (231), the upper ends of the two fixing rings (23) are fixedly connected to a fixing seat (32), and the lower end of the fixing seat (32) is provided with a plurality of hydraulic devices (33).

4. The device for detecting the bearing capacity of a deck-buffered steel temporary bridge according to claim 3 is characterized in that: The dynamic load-bearing test group (4) comprises a motor (41) fixedly mounted on the outer surface of the left connecting frame (221); the output end of the motor (41) is fixedly connected to a rotating shaft 1 (42); the outer surface of the rotating shaft 1 (42) is rotatably connected to a fixing ring 1 (23); the surfaces of the two fixing rings 1 (23) close to each other are both fixedly connected to fixing ring 2 (43); the outer surface of the rotating shaft 1 (42) is rotatably connected to the fixing ring 2 (43); the surfaces of the two fixing rings 2 (43) close to each other are both provided with limiting grooves 2 (431).

5. The device for detecting the bearing capacity of a deck-buffered steel temporary bridge according to claim 4 is characterized in that: The left and right sides of the outer surface of the rotating shaft 1 (42) are fixedly connected with gears 1 (44), and the sides of the two gears 1 (44) that are away from each other are rotatably connected with the two fixed rings 2 (43). The outer surfaces of the two gears 1 (44) are meshingly connected with two gears 2 (45), and the sides of the two gears 2 (45) on different sides that are close to each other are fixedly connected with a rotating shaft 2 (46). Both ends of the two rotating shafts 2 (46) are slidably connected with two limiting grooves 2 (431). The left and right sides of the outer surface of the rotating shaft 1 (42) are fixedly connected with connecting seats 2 (47), and both ends of the two connecting seats 2 (47) are rotatably connected with the rotating shaft 2 (46). The outer surfaces of the two rotating shafts 2 (46) are fixedly connected with eccentric blocks (461), and the outer surfaces of the eccentric blocks (461) are movably connected with the load-bearing roller (31).

6. The device for detecting the bearing capacity of a deck-buffered steel temporary bridge according to claim 4 is characterized in that: The impact assembly (5) comprises a belt transmission mechanism (52) fixedly connected to the left and right ends of the rotating shaft (42); the upper cabinets of the two belt transmission mechanisms (52) are fixedly connected to the rotating shaft (53); the two ends of the rotating shaft (53) are rotatably connected to the two connecting frames (221); the outer surface of the rotating shaft (53) is fixedly connected to three rotating seats (54); the inner surfaces of the three rotating seats (54) are all rotatably connected to pulleys (55).

7. The device for detecting the bearing capacity of a deck-buffered steel temporary bridge according to claim 2 is characterized in that: The upper end of the connecting seat 1 (22) is fixedly connected to three supporting seats 1 (56), the upper ends of the three supporting seats 1 (56) are rotatably connected to a rotating seat 1 (57), the lower ends of the three rotating seats 1 (57) are fixedly connected to a toggle block (571), the outer surfaces of the three toggle blocks (571) are respectively slidably connected to the pulley (55), the front ends of the three rotating seats 1 (57) are fixedly connected to a collision block (58), the upper ends of the three collision blocks (58) are fixedly connected to a clamping seat 1 (59), the inner surfaces of the three clamping seats 1 (59) are rotatably connected to a rotating block 1 (591), the upper ends of the three rotating blocks 1 (591) are fixedly connected to a telescopic rod (510), the upper ends of the three rotating blocks 1 (591) are fixedly connected to a spring (511), and the three springs (511) are sleeved on the outer surfaces of the three telescopic rods (510).

8. The device for detecting the bearing capacity of a deck-buffered steel temporary bridge according to claim 7 is characterized in that: The rear sides of the three support seats one (56) are fixedly connected to the support seat two (512), the front ends of the three support seats two (512) are fixedly connected to the clamping seat two (513), the inner surfaces of the three clamping seats two (513) are rotatably connected to the rotating blocks two (514), and the lower ends of the three rotating blocks two (514) are fixedly connected to the three telescopic rods (510).

9. The device for detecting the bearing capacity of a deck-buffered steel temporary bridge according to claim 2 is characterized in that: The cleaning assembly (6) comprises a rotating shaft four (61) rotatably connected to a side of the two lifting seats (24) away from each other, the outer surfaces of the two rotating shafts four (61) are fixedly connected to a gear three (62), both sides of the upper end of the test bench (1) are fixedly connected to a rack (621), the outer surfaces of the two gears three (62) are meshed with the rack (621), the ends of the two rotating shafts four (61) away from each other are fixedly connected to a belt transmission mechanism two (63), and the two belts The end of the belt transmission mechanism 2 (63) away from the rotating shaft 4 (61) is fixedly connected with a bidirectional screw rod (64), the lower end of the connecting seat 1 (22) is fixedly connected with two limit blocks (65), the outer surface of the bidirectional screw rod (64) is rotatably connected to the limit blocks (65), the outer surface of the bidirectional screw rod (64) is rotatably connected with a sliding sleeve (66), the upper end of the sliding sleeve (66) is slidably connected to the connecting seat 1 (22), and the lower end of the sliding sleeve (66) is provided with a cleaning brush (67).

10. The device for detecting the bearing capacity of a deck-buffered steel temporary bridge according to claim 9 is characterized in that: The detection assembly (7) comprises a connection seat three (71) fixedly connected to the rear end of the limit block (65), and an infrared scanner (72) is arranged at the lower end of the connection seat three (71).

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