Multi-environment anti-deformation detection equipment for bridge steel structure

Abstract

The invention discloses bridge steel structure multi-environment deformation resistance detection equipment, and relates to the technical field of bridge detection equipment, the bridge steel structure multi-environment deformation resistance detection equipment comprises a workbench, an impact device, a detection device, a fixing device, an electric cabinet and a simulation device, the impact device can apply an impact load to a steel structure and continuously vibrate in the detection process, the fatigue response of the steel structure is accelerated, and the detection efficiency is improved. The equipment utilizes the extreme peak value parameters to carry out an acceleration test on the bridge steel structure, so that the deformation resistance of the bridge under long-term load is effectively simulated in a short time period, the detection period can be shortened, the detection efficiency is improved, and the detection cost is reduced. The fixing device can automatically adjust the clamping position and the clamping force according to the size of the detected steel structure before detection, the labor intensity of workers is reduced, the safety and the stability of the detection process are improved, the simulation device can comprehensively simulate various environmental factors such as temperature, humidity and wind load, meanwhile, the turbulence characteristic of natural wind is simulated, and the detection accuracy is improved. And the authenticity and complexity of the wind load test are improved.

Description

Technical Field

[0001] This invention relates to the field of bridge inspection equipment technology, specifically a multi-environment deformation resistance testing device for bridge steel structures. Background Technology

[0002] With the continuous development of transportation infrastructure, the structural safety and service life of bridges have attracted much attention, especially in large bridges. Steel structures are widely used in key load-bearing parts such as main beams and cables due to their advantages such as high strength, light weight, and convenient construction. During long-term operation, steel structures are easily deformed to significant extent due to factors such as traffic loads, wind loads, and temperature changes. The deformation resistance of steel structures in different environments is crucial, and the strength performance of steel structures directly affects the service life of bridges. Before being put into use, it is necessary to test their deformation resistance under multiple environments. However, the environmental simulation process of existing testing equipment is time-consuming, resulting in a long testing cycle and low testing efficiency. Summary of the Invention

[0003] The purpose of this invention is to provide a multi-environment deformation resistance testing device for bridge steel structures to solve the problems raised in the prior art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: the testing equipment includes a workbench, a fixing device and an impact device are installed inside the workbench, the impact device is located above the fixing device, a testing device is installed on the inner wall of the workbench, an electrical control box is installed on one side of the workbench, and a simulation device is installed on the other side of the workbench, and the electrical control box is connected to the control system.

[0005] The impact device includes a top plate mounted on a workbench. A first motor is mounted on the workbench, and a first lead screw is mounted on the output shaft of the first motor. The first lead screw rotates on the top plate, and a reset plate is slidably mounted on the first lead screw. A guide post is mounted on one side of the top plate, and the reset plate slides on the guide post. An electric gripper is mounted on the reset plate. A sliding plate is slidably mounted on the guide post, and a U-shaped plate is mounted on one side of the sliding plate. A gripping ring is mounted on the other side of the sliding plate. A sliding post is slidably mounted on the U-shaped plate, and an impact plate is mounted on one side of the sliding post. A vibration spring is installed between the impact plate and the U-shaped plate, and the vibration spring is sleeved on the sliding post. The first motor and the electric gripper are connected to a control system. When the test begins, the control system releases the electric gripper, and the sliding plate slides downward along the guide post under the action of gravity. The sliding plate moves the U-shaped plate, which in turn moves the impact plate to impact the steel structure under test. The vibration spring causes the impact plate to vibrate continuously on the steel structure under test. After one working cycle, the control system starts the first motor, and the output shaft of the first motor drives the first lead screw to rotate. The first lead screw causes the reset plate to slide downward on the lead screw. The reset plate moves the electric gripper to the gripping ring, and the control system closes the electric gripper. The control system reverses the output shaft of the first motor, and the first motor drives the first lead screw to reverse. The first lead screw causes the reset plate to slide upward on the lead screw back to the initial position.

[0006] The testing device includes a base plate mounted on the inner wall of a workbench. A second lead screw is rotatably mounted on the base plate, and a second motor is mounted on one side of the base plate. The output shaft of the second motor is mounted on the second lead screw, and a slider is slidably mounted on the second lead screw. A laser level is mounted on one side of the slider. The second motor and the laser level are connected to a control system. When the second motor is started, its output shaft drives the second lead screw to rotate. The second lead screw then drives the slider to slide along the lead screw, which in turn moves the laser level. The laser level detects the flatness of the steel structure, thereby detecting whether the steel structure has deformed.

[0007] The fixing device includes a long plate mounted on the inner wall of the workbench. A door frame is installed on one side of the long plate, and a protective door is slidably installed inside the door frame. A fixing plate is installed below the long plate, and a third motor is installed on one side of the fixing plate. A central bevel gear is installed on the output shaft of the third motor. A support plate is installed below the long plate, and a first rotating shaft is rotatably mounted on the support plate. A first bevel gear is installed on one side of the first rotating shaft, and the central bevel gear meshes with the first bevel gear. A second bevel gear is installed on the other side of the first rotating shaft. A clamping device is installed above the long plate. The third motor is connected to the control system. When the steel structure to be tested is placed on the long plate, the control system starts the third motor. The output shaft of the third motor drives the central bevel gear to rotate, which in turn drives the first bevel gear to rotate. The first bevel gear then drives the first rotating shaft to rotate, and the first rotating shaft in turn drives the second bevel gear to rotate.

[0008] The clamping device includes an outer cylinder mounted on a long plate. The outer cylinder has a sliding groove. A third lead screw is rotatably mounted inside the outer cylinder, and a third bevel gear is mounted on one side of the third lead screw. The second and third bevel gears mesh. A rotating cylinder is rotatably mounted on the outside of the outer cylinder, and a rotating ring is mounted on one side of the rotating cylinder. An arc-shaped block is connected to the outer surface of the rotating ring. The rotating ring slides on the third lead screw, and the arc-shaped block slides within the sliding groove. An L-shaped plate is mounted on one side of the rotating cylinder. The second bevel gear drives the third bevel gear to rotate, which in turn drives the third lead screw to rotate. The third lead screw drives the rotating ring to rotate, causing the arc-shaped block to slide within the sliding groove. The arc-shaped block drives the rotating cylinder to rotate, which in turn drives the L-shaped plate to rotate. The L-shaped plate rotates 90 degrees, at which point the arc-shaped block reaches the bottom of the sliding groove, restricting its rotation. The third lead screw then drives the rotating ring to slide downwards on it, causing the rotating ring to move downwards. The rotating cylinder then moves the L-shaped plate downwards until the L-shaped plate presses against the steel structure to be measured.

[0009] The simulation device includes an outer casing mounted on one side of the workbench. Inside the casing is a blower box with a first and a second air outlet pipe. A heating box is mounted on one side of the second air outlet pipe, and a third air outlet pipe is mounted on one side of the heating box. A spray device is mounted above the blower box. A drive device is rotatably mounted inside the casing, and the heating box is connected to the control system. After the steel structure under test is fixed, the electric heating box is started, and the electric reversing valve is activated. The air sprayed from the blower box enters the second air outlet pipe, is heated by the electric heating box to form hot air, and enters the workbench through the third air outlet pipe to simulate a high-temperature environment. After a period of time, the electric reversing valve is activated, and the air sprayed from the blower box enters the first air outlet pipe and then enters the workbench to quickly dissipate heat. This process is repeated to test the steel structure's resistance to deformation under temperature changes. After the temperature test is completed, the electric reversing valve is activated, and the water mist sprayed by the spray device enters the first air outlet pipe through the fourth air outlet pipe. The air sprayed from the blower box carries the water mist into the workbench, creating a humidity impact to test the steel structure's resistance to deformation under humidity changes.

[0010] The blower box includes a housing, which is installed inside the outer shell. The housing has an air inlet, and the interior of the housing has an air inlet chamber and an air outlet chamber. A first limiting plate and a second limiting plate are installed on the inner wall of the air inlet chamber. A first air inlet and a second air inlet are provided on the outer surface of the housing. A first air outlet and a second air outlet are provided on the inner wall of the air inlet chamber. A first one-way valve is installed on the first air inlet, a second one-way valve is installed on the second air inlet, a third one-way valve is installed on the first air outlet, and a fourth one-way valve is installed on the second air outlet. The air outlet chamber is connected to the first air outlet pipe and the second air outlet pipe. When the push plate moves downward, the first one-way valve opens, and outside air enters the intake chamber through the air inlet. The push plate then pushes the third one-way valve to open, and the air in the intake chamber enters the exhaust chamber. When the push plate moves upward, the second one-way valve opens, and outside air enters the intake chamber through the air inlet. The push plate then pushes the fourth one-way valve to open, and the air in the intake chamber enters the exhaust chamber. Through the reciprocating movement of the push plate, a pulsating airflow is formed.

[0011] The drive unit includes a first crank that rotates on a housing. A first rocker arm is rotatably mounted on the first crank, and a disc is rotatably mounted on the first rocker arm. A connecting rod is connected to one side of the disc, and a push plate is connected to one side of the connecting rod. The push plate is slidably mounted within the intake chamber and is located between a first limiting plate and a second limiting plate. A first gear is mounted on a second motor, and a second gear is mounted on the first crank. A first belt is mounted on both the first and second gears. The second motor drives the first gear, which in turn drives the first belt to rotate. The first belt drives the second gear to rotate, which in turn drives the first crank to rotate. The first crank drives the first rocker arm to rotate, which in turn causes the disc to slide within the intake chamber. The disc then moves the connecting rod, which in turn moves the push plate.

[0012] The spraying device includes a spray box mounted on a housing. Inside the spray box, a second crank is rotatably mounted, on which a second rocker arm is rotatably mounted. A pressure plate is rotatably mounted on the second rocker arm, sliding on the inner wall of the spray box. A water storage tank is mounted on one side of the spray box, and the spray box and the water storage tank are connected by a pipe. A fifth one-way valve is installed inside the water storage tank. The spray box has spray holes, and a fourth air outlet pipe is installed on the spray holes. A rotating plate is mounted on one side of the second crank, and a pawl is mounted on the outer surface of the rotating plate. A return spring is installed between the pawl and the rotating plate. A third gear is rotatably mounted on the spray box, and a ratchet is connected inside the third gear. The pawl and the ratchet mesh. A fourth gear is mounted on the first crank, and a second belt is mounted on the third and fourth gears. When the second motor reverses, the first crank drives the fourth gear to rotate, the fourth gear drives the second belt to rotate, the second belt drives the third gear to rotate, the third gear drives the ratchet to rotate, the ratchet drives the pawl to move, the pawl drives the rotating plate to rotate, the rotating plate drives the second crank to rotate, the second crank drives the second rocker arm to rotate, and the second rocker arm drives the pressure plate to move up and down inside the spray box. When the pressure plate moves downward, it presses water into the spray hole, atomizing and spraying the water. When the pressure plate moves upward, the fifth one-way valve opens, and water from the storage tank is added to the spray box.

[0013] An electric reversing valve is installed on one side of the first, second, and fourth air outlet pipes, and the electric reversing valve is connected to the control system.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. This invention employs rapid detection technology. During the detection process, it can apply impact loads and continuous vibrations to the steel structure, accelerating the fatigue response of the steel structure. The equipment utilizes extreme peak parameters to conduct accelerated tests on the bridge steel structure, thereby effectively simulating the deformation resistance of the bridge under long-term loads within a short time period. This can shorten the detection cycle and improve detection efficiency.

[0016] 2. This invention adopts automatic clamping technology, which can automatically adjust the clamping position and clamping force according to the size of the steel structure to be tested before testing. It eliminates the need for manual measurement and manual clamping, effectively reducing the labor intensity of manual labor, speeding up the testing preparation efficiency, avoiding problems such as loose clamping and displacement deviation caused by human error, and improving the safety and stability of the testing process.

[0017] 3. The environmental simulation technology used in this invention can comprehensively simulate various environmental factors such as temperature, humidity, and wind load, and reproduce the real working conditions faced by bridge steel structures in natural service environments. At the same time, by generating pulsating airflow through blowers, it can simulate the turbulent characteristics of natural wind, improve the authenticity and complexity of wind load tests, and make the test results more accurate. Attached Figure Description

[0018] Figure 1 This is a perspective view of the detection device of the present invention;

[0019] Figure 2 This is a perspective view of the impact device of the present invention;

[0020] Figure 3 This is a perspective view of the detection device of the present invention;

[0021] Figure 4 This is a perspective view of the fixing device of the present invention;

[0022] Figure 5 This is an exploded view of the clamping device of the present invention;

[0023] Figure 6 This is an exploded view of the simulation device of the present invention;

[0024] Figure 7 This is a schematic diagram of the internal structure of the blower box of the present invention;

[0025] Figure 8 This is a perspective view of the driving device of the present invention;

[0026] Figure 9 This is a schematic diagram of the internal structure of the spray device of the present invention.

[0027] In the diagram: 1. Workbench; 2. Impact device; 21. Top plate; 22. First motor; 23. First lead screw; 24. Reset plate; 25. Electric gripper; 26. Sliding plate; 27. Grip ring; 28. Impact plate; 3. Detection device; 31. Base plate; 32. Second motor; 33. Slider; 34. Laser level; 35. Second lead screw; 4. Fixing device; 41. Long plate; 42. Protective door; 43. Fixing plate; 44. Third motor; 45. Central bevel gear; 46. First bevel gear; 47. Second bevel gear; 48. Clamping device; 481. Third bevel gear; 482. Third lead screw; 483. Outer cylinder; 484. Rotating cylinder; 485. Rotating ring; 486. Arc block; 487. L 5. Molding plate; 6. Electrical control box; 7. Simulation device; 8. Outer shell; 9. Blower box; 10. Housing; 11. Box body; 12. Air inlet chamber; 13. First limiting plate; 14. Second limiting plate; 15. Air outlet chamber; 16. First one-way valve; 17. Second one-way valve; 18. Third one-way valve; 19. Fourth one-way valve; 20. Drive device; 21. First crank; 22. First rocker arm; 23. Disc; 24. Connecting rod; 25. Push plate; 26. First belt; 37. Heating box; 48. Spraying device; 59. Spray box; 60. Second crank; 61. Second rocker arm; 62. Pressure plate; 63. Water tank; 64. Third gear; 65. Rotating plate. Detailed Implementation

[0028] Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Example: Figures 1-9 As shown, the present invention provides a technical solution. The testing equipment includes a workbench 1. A fixing device 4 and an impact device 2 are installed inside the workbench 1. The impact device 2 is located above the fixing device 4. A testing device 3 is installed on the inner wall of the workbench 1. An electrical control box 5 is installed on one side of the workbench 1. A simulation device 6 is installed on the other side of the workbench 1. The electrical control box 5 is connected to the control system.

[0030] The impact device 2 includes a top plate 21, which is mounted on a workbench 1. A first motor 22 is mounted on the workbench 1. A first lead screw 23 is mounted on the output shaft of the first motor 22. The first lead screw 23 rotates on the top plate 21. A reset plate 24 is slidably mounted on the first lead screw 23. A guide post is mounted on one side of the top plate 21. The reset plate 24 slides on the guide post. An electric gripper 25 is mounted on the reset plate 24. A sliding plate 26 is slidably mounted on the guide post. A U-shaped plate is mounted on one side of the sliding plate 26. A gripping ring 27 is mounted on the other side of the sliding plate 26. A sliding post is slidably mounted on the U-shaped plate. An impact plate 28 is mounted on one side of the sliding post. A vibration spring is installed between the impact plate 28 and the U-shaped plate. The vibration spring is sleeved on the sliding post. The first motor 22 and the electric gripper 25 are connected to the control system. When the test begins, the control system controls the electric gripper 25 to release, and the sliding plate 26 slides downward along the guide post under the action of gravity. The sliding plate 26 drives the U-shaped plate to move, and the U-shaped plate drives the impact plate 28 to move and impact the steel structure under test. The vibration spring drives the impact plate 28 to form continuous vibration on the steel structure under test. After one working cycle, the control system starts the first motor 22, and the output shaft of the first motor 22 drives the first lead screw 23 to rotate. The first lead screw 23 drives the reset plate 24 to slide downward on the first lead screw 23. The reset plate 24 drives the electric gripper 25 to move onto the gripping ring 27, and the control system controls the electric gripper 25 to clamp. The control system controls the output shaft of the first motor 22 to reverse, and the first motor 22 drives the first lead screw 23 to reverse. The first lead screw 23 drives the reset plate 24 to slide upward on the first lead screw 23 to the initial position.

[0031] The detection device 3 includes a base plate 31, which is mounted on the inner wall of the workbench 1. A second lead screw 35 is rotatably mounted on the base plate 31. A second motor 32 is mounted on one side of the base plate 31, and the output shaft of the second motor 32 is mounted on the second lead screw 35. A slider 33 is slidably mounted on the second lead screw 35, and a laser level 34 is mounted on one side of the slider 33. The second motor 32 and the laser level 34 are connected to a control system. When the second motor 32 is started, its output shaft drives the second lead screw 35 to rotate. The second lead screw 35 drives the slider 33 to slide on the second lead screw 35, and the slider 33 drives the laser level 34 to move. The laser level 34 detects the flatness of the steel structure, thereby detecting whether the steel structure has deformed.

[0032] The fixing device 4 includes a long plate 41, which is installed on the inner wall of the workbench 1. A door frame is installed on one side of the long plate 41, and a protective door 42 is slidably installed inside the door frame. A fixing plate 43 is installed below the long plate 41, and a third motor 44 is installed on one side of the fixing plate 43. A central bevel gear 45 is installed on the output shaft of the third motor 44. A support plate is installed below the long plate 41, and a first rotating shaft is rotatably installed on the support plate. A first bevel gear 46 is installed on one side of the first rotating shaft, and the central bevel gear 45 and the first bevel gear 46 mesh. A second bevel gear 47 is installed on the other side of the first rotating shaft. A clamping device 48 is installed above the long plate 41. The third motor 44 is connected to the control system. When the steel structure to be tested is placed on the long plate 41, the control system starts the third motor 44. The output shaft of the third motor 44 drives the central bevel gear 45 to rotate, the central bevel gear 45 drives the first bevel gear 46 to rotate, the first bevel gear 46 drives the first rotating shaft to rotate, and the first rotating shaft drives the second bevel gear 47 to rotate.

[0033] The clamping device 48 includes an outer cylinder 483, which is mounted on a long plate 41. A sliding groove is provided on the outer cylinder 483. A third lead screw 482 is rotatably mounted inside the outer cylinder 483. A third bevel gear 481 is mounted on one side of the third lead screw 482. The second bevel gear 47 and the third bevel gear 481 mesh. A rotating cylinder 484 is rotatably mounted on the outer side of the outer cylinder 483. A rotating ring 485 is mounted on one side of the rotating cylinder 484. An arc-shaped block 486 is connected to the outer surface of the rotating ring 485. The rotating ring 485 slides on the third lead screw 482, and the arc-shaped block 486 slides in the sliding groove. An L-shaped plate 487 is mounted on one side of the rotating cylinder 484. The second bevel gear 47 drives the third bevel gear 481 to rotate, the third bevel gear 481 drives the third lead screw 482 to rotate, the third lead screw 482 drives the rotating ring 485 to rotate, the rotating ring 485 drives the arc block 486 to slide in the sliding groove, the arc block 486 drives the rotating cylinder 484 to rotate, the rotating cylinder 484 drives the L-shaped plate 487 to rotate, the L-shaped plate 487 rotates 90 degrees, at this time the arc block 486 rotates to the bottom of the sliding groove, the sliding groove restricts the rotation of the arc block 486, the third lead screw 482 drives the rotating ring 485 to slide downward on the third lead screw 482, the rotating ring 485 drives the rotating cylinder 484 to move downward, the rotating cylinder 484 drives the L-shaped plate 487 to move downward until the L-shaped plate 487 presses down on the steel structure to be tested.

[0034] The simulation device 6 includes a housing 61, which is installed on one side of the workbench 1. A blower box 62 is installed inside the housing 61. A first air outlet pipe and a second air outlet pipe are installed on the blower box 62. An electric heating box 64 is installed on one side of the second air outlet pipe. A third air outlet pipe is installed on one side of the electric heating box 64. A spray device 65 is installed above the blower box 62. A drive device 63 is rotatably installed inside the housing 61. The electric heating box 64 is connected to the control system. After the steel structure under test is fixed, the electric heating box 64 is started, and the electric reversing valve is started. The air sprayed from the blower box 62 enters the second air outlet pipe and is heated by the electric heating box 64 to form hot air. The hot air enters the workbench 1 through the third air outlet pipe to simulate a high-temperature environment. After a period of time, the electric reversing valve is started, and the air sprayed from the blower box 62 enters the first air outlet pipe and enters the workbench 1 from the first air outlet pipe to quickly dissipate heat from the workbench 1. This process is repeated to test the steel structure's resistance to deformation under temperature changes. When the temperature test is completed, the electric reversing valve is started, and the water mist sprayed by the spray device 65 enters the first air outlet pipe through the fourth air outlet pipe. The air sprayed by the blower box 62 carries the water mist into the workbench 1 to form a humidity impact, thus testing the steel structure's resistance to deformation under humidity changes.

[0035] The blower box 62 includes a box body 621, which is installed inside the outer shell 61. The box body 621 is provided with an air inlet. The inside of the box body 621 is provided with an air inlet chamber 622 and an air outlet chamber 625. A first limiting plate 623 and a second limiting plate 624 are installed on the inner wall of the air inlet chamber 622. A first air inlet and a second air inlet are provided on the outer surface of the box body 621. A first air outlet and a second air outlet are provided on the inner wall of the air inlet chamber 622. A first one-way valve 626 is installed on the first air inlet, a second one-way valve 627 is installed on the second air inlet, a third one-way valve 628 is installed on the first air outlet, and a fourth one-way valve 629 is installed on the second air outlet. The air outlet chamber 625 is connected to the first air outlet pipe and the second air outlet pipe. When the push plate 635 moves downward, the first one-way valve 626 opens, and outside air enters the intake chamber 622 through the air inlet. The push plate 635 pushes the third one-way valve 628 to open, and the air in the intake chamber 622 enters the exhaust chamber 625. When the push plate 635 moves upward, the second one-way valve 627 opens, and outside air enters the intake chamber 622 through the air inlet. The push plate 635 pushes the fourth one-way valve 629 to open, and the air in the intake chamber 622 enters the exhaust chamber 625. Through the reciprocating movement of the push plate 635, a pulsating airflow is formed.

[0036] The drive unit 63 includes a first crank 631 that rotates on the housing 61. A first rocker arm 632 is rotatably mounted on the first crank 631. A disc 633 is rotatably mounted on the first rocker arm 632. A connecting rod 634 is connected to one side of the disc 633. A push plate 635 is connected to one side of the connecting rod 634. The push plate 635 is slidably mounted in the air intake chamber 622 and is located between the first limiting plate 623 and the second limiting plate 624. A first gear is mounted on the second motor 32. A second gear is mounted on the first crank 631. A first belt 636 is mounted on the first gear and the second gear. The second motor 32 drives the first gear, which in turn drives the first belt 636 to rotate. The first belt 636 rotates, causing the second gear to rotate. The second gear drives the first crank 631 to rotate, which in turn drives the first rocker arm 632 to rotate. The first rocker arm 632 drives the disc 633 to slide within the air intake chamber 622. The disc 633 drives the connecting rod 634 to move, and the connecting rod 634 drives the push plate 635 to move.

[0037] The spraying device 65 includes a spray box 651, which is mounted on a housing 621. A second crank 652 is rotatably mounted inside the spray box 651, and a second rocker arm 653 is rotatably mounted on the second crank 652. A pressure plate 654 is rotatably mounted on the second rocker arm 653, and the pressure plate 654 slides on the inner wall of the spray box 651. A water storage tank 655 is mounted on one side of the spray box 651. The spray box 651 and the water storage tank 655 are connected by a pipe. A fifth check valve is installed inside the water storage tank 655. Spray holes are provided on the spray box 651, and a valve is installed on the spray holes. The system is equipped with a fourth air outlet pipe. An electric reversing valve is installed on one side of the first, second, and fourth air outlet pipes. The electric reversing valve is connected to the control system. A rotating plate 657 is installed on one side of the second crank 652. A pawl is installed on the outer surface of the rotating plate 657. A return spring is installed between the pawl and the rotating plate 657. A third gear 656 is rotatably mounted on the spray box 651. A ratchet is connected inside the third gear 656. The pawl and the ratchet mesh. A fourth gear is installed on the first crank 631. A second belt is installed on the third gear 656 and the fourth gear. When the second motor 32 reverses, the first crank 631 drives the fourth gear to rotate, the fourth gear drives the second belt to rotate, the second belt drives the third gear 656 to rotate, the third gear 656 drives the ratchet to rotate, the ratchet drives the pawl to move, the pawl drives the rotating plate 657 to rotate, the rotating plate 657 drives the second crank 652 to rotate, the second crank 652 drives the second rocker arm 653 to rotate, and the second rocker arm 653 drives the pressure plate 654 to move up and down in the spray box 651. When the pressure plate 654 moves downward, it presses water into the spray hole and atomizes the water. When the pressure plate 654 moves upward, the fifth one-way valve opens, and the water in the water storage tank 655 is replenished into the spray box 651.

[0038] Working principle of the invention:

[0039] When the steel structure to be tested is placed on the long plate 41, the third motor 44 is started. The output shaft of the third motor 44 drives the central bevel gear 45 to rotate, the central bevel gear 45 drives the first bevel gear 46 to rotate, the first bevel gear 46 drives the first rotating shaft to rotate, the first rotating shaft drives the second bevel gear 47 to rotate, the second bevel gear 47 drives the third bevel gear 481 to rotate, the third bevel gear 481 drives the third lead screw 482 to rotate, the third lead screw 482 drives the rotating ring 485 to rotate, and the rotating ring 485 drives the arc block 48. 6. Slide within the sliding groove. The arc-shaped block 486 drives the rotating cylinder 484 to rotate, and the rotating cylinder 484 drives the L-shaped plate 487 to rotate. The L-shaped plate 487 rotates 90 degrees. At this time, the arc-shaped block 486 rotates to the bottom of the sliding groove. The sliding groove restricts the rotation of the arc-shaped block 486. The third lead screw 482 drives the rotating ring 485 to slide downward on the third lead screw 482. The rotating ring 485 drives the rotating cylinder 484 to move downward. The rotating cylinder 484 drives the L-shaped plate 487 to move downward until the L-shaped plate 487 presses against the steel structure to be tested.

[0040] After the steel structure to be tested is fixed, the control heating box 64 is started, and the control second motor 32 is started. The second motor 32 drives the first gear, which drives the first belt 636 to rotate. The rotation of the first belt 636 drives the second gear to rotate, which drives the first crank 631 to rotate. The first crank 631 drives the first rocker arm 632 to rotate. The first rocker arm 632 drives the disc 633 to slide in the air intake chamber 622. The disc 633 drives the connecting rod 634 to move, and the connecting rod 634 drives the push plate 635 to move. When the push plate 635 moves downward, the first one-way valve 626 opens, and outside air enters the air intake chamber through the air inlet. Inside 622, push plate 635 pushes the third one-way valve 628 to open, and the air in the intake chamber 622 enters the exhaust chamber 625. When push plate 635 moves upward, the second one-way valve 627 opens, and outside air enters the intake chamber 622 through the air inlet. Push plate 635 pushes the fourth one-way valve 629 to open, and the air in the intake chamber 622 enters the exhaust chamber 625. Through the reciprocating movement of push plate 635, a pulsating airflow is formed, which controls the electric reversing valve to start. The air ejected from blower box 62 enters the second exhaust pipe, and is heated by electric heating box 64 to form hot air. The hot air enters the workbench 1 through the third exhaust pipe to simulate a high-temperature environment.

[0041] When the test begins, the control system releases the electric gripper 25, and the sliding plate 26 slides down the guide column under the action of gravity. The sliding plate 26 drives the U-shaped plate to move, and the U-shaped plate drives the impact plate 28 to move and impact the steel structure under test. The vibration spring drives the impact plate 28 to form continuous vibration on the steel structure under test, forming a thermal vibration coupling condition, which accelerates the yield fatigue of the steel structure. After a period of time, the control electric reversing valve is activated, and the air sprayed from the blower box 62 enters the first air outlet pipe and enters the workbench 1 from the first air outlet pipe to quickly dissipate heat in the workbench 1. This process is repeated to test the deformation resistance of the steel structure under temperature change environment. At the same time, the output shaft of the second motor 32 drives the second lead screw 35 to rotate. The second lead screw 35 drives the slider 33 to slide on the second lead screw 35. The slider 33 drives the laser level 34 to move. The laser level 34 detects the flatness of the steel structure, thereby detecting whether the steel structure has deformed.

[0042] After one working cycle, the first motor 22 is started, and its output shaft drives the first lead screw 23 to rotate. The first lead screw 23 drives the reset plate 24 to slide downwards on the lead screw 23. The reset plate 24 drives the electric gripper 25 to move onto the gripper ring 27, and the electric gripper 25 is clamped. The output shaft of the first motor 22 is reversed, and the first motor 22 drives the first lead screw 23 to rotate in reverse. The first lead screw 23 drives the reset plate 24 to slide upwards to its initial position on the lead screw 23. The output shaft of the second motor 32 is reversed, and the first crank 631 drives the fourth gear to rotate. The fourth gear drives the second belt to rotate, and the second belt drives the third gear 656 to rotate. The third gear 656 drives the ratchet to rotate, and the ratchet drives the pawl to move. The pawl drives the rotating plate 657 to rotate, and the rotating plate 657 drives the second crank 652 to rotate. The second crank 652 drives the second rocker arm 653 to rotate. 3. The pressure plate 654 moves up and down inside the spray box 651. When the pressure plate 654 moves downward, it presses water into the spray hole and atomizes the water. When the pressure plate 654 moves upward, the fifth one-way valve opens, and the water in the water storage tank 655 is replenished into the spray box 651. The electric reversing valve is activated, and the water mist sprayed by the spray device 65 enters the first air outlet through the fourth air outlet. The air sprayed by the blower box 62 carries the water mist into the workbench 1. The electric gripper 25 is released, and the impact plate 28 moves and impacts the steel structure to be tested, forming a humidity impact to detect the deformation resistance of the steel structure under humidity change environment. At the same time, the output shaft of the second motor 32 drives the second lead screw 35 to reverse. The second lead screw 35 drives the slider 33 to slide on the second lead screw 35. The slider 33 drives the laser level 34 to move to the initial position. The laser level 34 detects the flatness of the steel structure, thereby detecting whether the steel structure has deformed.

[0043] After all operating conditions are completed, the third motor 44 is started. The output shaft of the third motor 44 drives the central bevel gear 45 to reverse, which in turn drives the first bevel gear 46 to reverse, which in turn drives the first rotating shaft to reverse, which in turn drives the second bevel gear 47 to reverse, which in turn drives the third bevel gear 481 to reverse, which in turn drives the third lead screw 482 to reverse, which in turn drives the rotating ring 485 to reverse, which in turn drives the arc-shaped block 486 to slide within the sliding groove. The sliding groove restricts the rotation of the arc-shaped block 486. The third lead screw 482 drives the rotating ring 485 to slide upward on the third lead screw 482. The rotating ring 485 drives the rotating cylinder 484 to move upward. The rotating cylinder 484 drives the L-shaped plate 487 to move upward until the L-shaped plate 487 returns to the initial position. When the arc-shaped block 486 slides to the bottom of the sliding groove, the arc-shaped block 486 drives the rotating cylinder 484 to reverse. The rotating cylinder 484 drives the L-shaped plate 487 to reverse. The L-shaped plate 487 rotates to the initial angle, and the steel structure is removed manually.

[0044] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A multi-environment deformation resistance testing device for bridge steel structures, characterized in that: The testing equipment includes a workbench (1), inside which a fixing device (4) and an impact device (2) are installed. The impact device (2) is located above the fixing device (4). A testing device (3) is installed on the inner wall of the workbench (1). An electrical control box (5) is installed on one side of the workbench (1), and a simulation device (6) is installed on the other side of the workbench (1). The electrical control box (5) is connected to the control system.

2. The multi-environment deformation resistance testing equipment for bridge steel structures according to claim 1, characterized in that: The impact device (2) includes a top plate (21), which is mounted on a workbench (1). A first motor (22) is mounted on the workbench (1). A first lead screw (23) is mounted on the output shaft of the first motor (22). The first lead screw (23) rotates on the top plate (21). A reset plate (24) is slidably mounted on the first lead screw (23). A guide post is mounted on one side of the top plate (21). The reset plate (24) slides on the guide post. 4) An electric gripper (25) is installed on the guide post. A sliding plate (26) is slidably installed on the guide post. A U-shaped plate is installed on one side of the sliding plate (26). A gripping ring (27) is installed on the other side of the sliding plate (26). A sliding column is slidably installed on the U-shaped plate. An impact plate (28) is installed on one side of the sliding column. A vibration spring is installed between the impact plate (28) and the U-shaped plate. The vibration spring is sleeved on the sliding column. The first motor (22) and the electric gripper (25) are connected to the control system.

3. The multi-environment deformation resistance testing equipment for bridge steel structures according to claim 2, characterized in that: The detection device (3) includes a base plate (31), which is installed on the inner wall of the workbench (1). A second lead screw (35) is rotatably installed on the base plate (31). A second motor (32) is installed on one side of the base plate (31). The output shaft of the second motor (32) is installed on the second lead screw (35). A slider (33) is slidably installed on the second lead screw (35). A laser level (34) is installed on one side of the slider (33). The second motor (32) and the laser level (34) are connected to the control system.

4. The multi-environment deformation resistance testing equipment for bridge steel structures according to claim 3, characterized in that: The fixing device (4) includes a long plate (41) which is installed on the inner wall of the workbench (1). A door frame is installed on one side of the long plate (41), and a protective door (42) is slidably installed inside the door frame. A fixing plate (43) is installed below the long plate (41), and a third motor (44) is installed on one side of the fixing plate (43). A central bevel gear (45) is installed on the output shaft of the third motor (44). A support plate is installed below the long plate (41), and a first rotating shaft is rotatably installed on the support plate. A first bevel gear (46) is installed on one side of the first rotating shaft. The central bevel gear (45) and the first bevel gear (46) mesh. A second bevel gear (47) is installed on the other side of the first rotating shaft. A clamping device (48) is installed above the long plate (41), and the third motor (44) is connected to the control system.

5. The multi-environment deformation resistance testing equipment for bridge steel structures according to claim 4, characterized in that: The clamping device (48) includes an outer cylinder (483), which is mounted on a long plate (41). A sliding groove is provided on the outer cylinder (483). A third lead screw (482) is rotatably mounted inside the outer cylinder (483). A third bevel gear (481) is mounted on one side of the third lead screw (482). The second bevel gear (47) and the third bevel gear (481) mesh. A rotating cylinder (484) is rotatably mounted on the outer side of the outer cylinder (483). A rotating ring (485) is mounted on one side of the rotating cylinder (484). An arc-shaped block (486) is connected to the outer surface of the rotating ring (485). The rotating ring (485) slides on the third lead screw (482). The arc-shaped block (486) slides in the sliding groove. An L-shaped plate (487) is mounted on one side of the rotating cylinder (484).

6. The multi-environment deformation resistance testing equipment for bridge steel structures according to claim 5, characterized in that: The simulation device (6) includes a housing (61) which is installed on one side of the workbench (1). A blower box (62) is installed inside the housing (61). A first air outlet pipe and a second air outlet pipe are installed on the blower box (62). An electric heating box (64) is installed on one side of the second air outlet pipe. A third air outlet pipe is installed on one side of the electric heating box (64). A spray device (65) is installed above the blower box (62). A drive device (63) is rotatably installed inside the housing (61). The electric heating box (64) is connected to the control system.

7. The multi-environment deformation resistance testing equipment for bridge steel structures according to claim 6, characterized in that: The blower box (62) includes a box body (621), which is installed inside the outer shell (61). The box body (621) is provided with an air inlet. The box body (621) is provided with an air inlet chamber (622) and an air outlet chamber (625). A first limiting plate (623) and a second limiting plate (624) are installed on the inner wall of the air inlet chamber (622). A first air inlet and a second air inlet are provided on the outer surface of the box body (621). A first air outlet and a second air outlet are provided on the inner wall of the air inlet chamber (622). A first one-way valve (626) is installed on the first air inlet. A second one-way valve (627) is installed on the second air inlet. A third one-way valve (628) is installed on the first air outlet. A fourth one-way valve (629) is installed on the second air outlet. The air outlet chamber (625) is connected to the first air outlet pipe and the second air outlet pipe.

8. The multi-environment deformation resistance testing equipment for bridge steel structures according to claim 7, characterized in that: The drive device (63) includes a first crank (631) that rotates on the housing (61). A first rocker arm (632) is rotatably mounted on the first crank (631). A disc (633) is rotatably mounted on the first rocker arm (632). A connecting rod (634) is connected to one side of the disc (633). A push plate (635) is connected to one side of the connecting rod (634). The push plate (635) is slidably mounted in the air intake chamber (622). The push plate (635) is located between the first limiting plate (623) and the second limiting plate (624). A first gear is mounted on the second motor (32). A second gear is mounted on the first crank (631). A first belt (636) is mounted on the first gear and the second gear.

9. A multi-environment deformation resistance testing device for bridge steel structures according to claim 8, characterized in that: The spraying device (65) includes a spray box (651) mounted on a housing (621). A second crank (652) is rotatably mounted inside the spray box (651). A second rocker arm (653) is rotatably mounted on the second crank (652). A pressure plate (654) is rotatably mounted on the second rocker arm (653). The pressure plate (654) slides on the inner wall of the spray box (651). A water storage tank (655) is mounted on one side of the spray box (651). The spray box (651) and the water storage tank (655) are connected by a pipe. The water storage tank (655) contains... Equipped with a fifth one-way valve, the spray box (651) is provided with a spray hole, a fourth air outlet pipe is installed on the spray hole, a rotating plate (657) is installed on one side of the second crank (652), a pawl is installed on the outer surface of the rotating plate (657), a return spring is installed between the pawl and the rotating plate (657), a third gear (656) is rotatably installed on the spray box (651), a ratchet is connected inside the third gear (656), the pawl and the ratchet mesh, a fourth gear is installed on the first crank (631), and a second belt is installed on the third gear (656) and the fourth gear.

10. A multi-environment deformation resistance testing device for bridge steel structures according to claim 9, characterized in that: An electric reversing valve is installed on one side of the first air outlet pipe, the second air outlet pipe, and the fourth air inlet / outlet pipe, and the electric reversing valve is connected to the control system.

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