Automatic detection device for strength of steel structure

Abstract

The utility model discloses an automatic detection device for the strength of a steel structure, and relates to the technical field of steel structure detection. The steel structure strength automatic detection device comprises a detection table, two placement plates are oppositely fixed on the detection table to facilitate placement of a to-be-detected steel structure, a clamping assembly is arranged on the detection table and matched with the placement plates to facilitate clamping and fixing of the steel structure, and two fixing plates are oppositely fixed on the rear side of the upper surface of the detection table to facilitate clamping and fixing of the to-be-detected steel structure. A screw rod is arranged between the two fixed plates, a movable block is arranged on the screw rod in a threaded mode, movable plates are fixed to the upper end and the lower end of the movable block, a hydraulic cylinder is installed on the top of the inner surface of the movable plate on the upper side, an installation block is fixed to the telescopic end of the hydraulic cylinder, and a detection block is installed at the bottom of the installation block. Under the action of the screw rod, the left-right movement of the detection block can be conveniently adjusted, and the device is suitable for detection of different parts of the steel structure.

Description

Technical Field

[0001] This utility model belongs to the field of steel structure testing technology, and in particular relates to an automated steel structure strength testing device. Background Technology

[0002] Steel structures are a common type of structure used in building construction. Most steel structures bear loads, so the strength requirements for steel structures are very high. After the steel structure is produced, its strength needs to be tested to ensure that the strength of the steel structure meets the requirements for use and to ensure the safety of the building during subsequent use.

[0003] Currently, the strength testing of steel structures mostly involves manual operation to limit and fix the steel structure, which is time-consuming and labor-intensive. Then, pressure is applied to the steel structure using a testing cylinder to perform the strength test. Since the installation position of the testing cylinder is fixed, pressure can only be applied to the fixed position of the steel structure during the testing process, and other parts of the steel structure cannot be tested. Furthermore, the degree of deformation of the steel structure is observed by the naked eye after pressure is applied, which is labor-intensive and results in high error of the test data. At the same time, it is impossible to detect cracks that occur inside the steel structure after pressure is applied, resulting in poor testing effect, low automation, and reduced testing efficiency.

[0004] To address the above issues, we propose an automated testing device for the strength of steel structures. Utility Model Content

[0005] Technical solution

[0006] To address the aforementioned technical problems, this utility model provides an automated steel structure strength testing device, comprising a testing platform with two placement plates fixedly opposite each other. A clamping assembly is provided on the testing platform to cooperate with the placement plates. Two fixing plates are fixedly opposite each other on the rear side of the upper surface of the testing platform, with a lead screw between the two fixing plates. A movable block is threaded onto the lead screw, and L-shaped movable plates are fixed at both ends of the movable block. A hydraulic cylinder is mounted on the top of the inner surface of the upper movable plate, and a mounting block is fixed to the telescopic end of the hydraulic cylinder. A pressure sensor is mounted on the bottom of the mounting block, and the bottom of the pressure sensor is connected to the testing block. A camera is mounted on one side of the mounting block. A flaw detector body is mounted on the bottom of the inner surface of the lower movable plate via an electric push rod. A reset assembly is provided on the rear side of the mounting block, and a laser rangefinder is mounted on the front end of the reset assembly.

[0007] The reset assembly includes a fixed rod, a reset spring, a connecting plate, a connecting rope, a first pulley group, a second pulley group, and a third pulley group. The fixed rod is fixed to the lower movable plate, the reset spring is sleeved on the outside of the fixed rod, the connecting plate is slidably sleeved on the fixed rod, and the two ends of the reset spring are respectively connected to the connecting plate and the movable plate. A mounting rod is fixed to the front end of the connecting plate, and the laser rangefinder is mounted on the front end of the mounting rod.

[0008] The first pulley group is located at the rear end of the movable block, the second pulley group is located at the top of the upper movable plate, and the third pulley group is located on the inner surface of the upper movable plate. One end of the connecting rope is fixedly connected to the connecting plate, and the other end of the connecting rope passes through the first pulley group, the second pulley group, and the third pulley group in sequence, and is fixedly connected to the rear end of the mounting block. Both the upper and lower movable plates have clearance grooves that cooperate with the connecting rope.

[0009] The clamping assembly includes a stop block, an L-shaped clamp, a U-shaped rod, and a cylinder. The stop block is fixed to the rear top of the placement plate. The U-shaped rod is movably engaged with the testing platform. The two L-shaped clamps are respectively fixed to both ends of the U-shaped rod, and the L-shaped clamps cooperate with the placement plate and the stop block. The cylinder is installed at the bottom of the testing platform, and the telescopic end of the cylinder is fixedly connected to the U-shaped rod.

[0010] The placement plate has a through groove that penetrates the testing station, and the longitudinal plate of the L-shaped clamp plate cooperates with the through groove.

[0011] Support rods are provided on both sides of the lead screw, and the support rods pass through the movable block. The movable block and the support rods are slidably engaged. A servo motor is installed on the fixed plate on the left side. The output shaft of the servo motor is connected to the left end of the lead screw. A slide rail is provided on the detection platform. A slider is slidably mounted on the slide rail. The slider is fixedly connected to the bottom of the movable plate on the lower side.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This utility model facilitates the placement of the steel structure to be inspected by using a placement plate, and the stop block effectively limits the steel structure placed on the placement plate. At the same time, the cylinder facilitates the downward movement of the U-shaped rod, which in turn drives the L-shaped clamps on both sides to move downward. Combined with the cooperation of the longitudinal plate and the through groove of the L-shaped clamp, it is easy to drive the L-shaped clamp to press on the steel structure and press and fix the steel structure on both sides. There is no need for staff to manually limit and clamp the steel structure to be inspected, saving manpower.

[0014] The hydraulic cylinder and the mounting block work together to facilitate the downward movement of the detection block, applying pressure to the clamped steel structure to test its strength. With the help of the camera, images of the steel structure surface before and after pressure can be collected, making it easy to observe the deformation of the steel structure. With the help of the pressure sensor, it is easy to monitor the pressure on the steel structure. At the same time, with the action of the flaw detector body, it is easy to detect internal cracks in the steel structure after pressure, effectively improving the inspection effect of the steel structure. The threaded engagement between the screw and the movable block allows for flexible adjustment of the left and right movement of the movable block. With the action of the movable plate, the detection block and the flaw detector body move left and right, making it easy to inspect different parts of the steel structure.

[0015] The laser rangefinder is convenient for detecting the height of the steel structure inspection area before pressure is applied. During the downward movement of the mounting block by the hydraulic cylinder, the connecting rope, combined with the sliding cooperation between the connecting plate and the fixed rod, facilitates pulling the connecting plate closer to the movable plate and compressing the return spring. Simultaneously, the mounting rod drives the laser rangefinder to move closer to the movable plate, exposing the area of ​​the steel structure to be inspected. This allows the inspection block to contact the steel structure downwards for inspection. After inspection, as the mounting block is adjusted upwards, the elasticity of the return spring returns the laser rangefinder to its initial position, facilitating the detection of the height of the steel structure inspection area after pressure is applied. This allows for further inspection of the steel structure's deformation and facilitates subsequent inspections, effectively improving the automation level of steel structure strength testing. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is the front view of the present invention;

[0018] Figure 3 for Figure 2 Schematic diagram of the structure of section AA;

[0019] Figure 4 for Figure 1 Enlarged structural diagram at point B;

[0020] Figure 5 for Figure 3 Enlarged structural diagram at point C;

[0021] Figure 6 for Figure 1 A structural diagram from another perspective.

[0022] The labels in the attached diagram are as follows: 1. Inspection platform; 2. Placement plate; 3. Fixing plate; 4. Lead screw; 5. Movable block; 6. Movable plate; 7. Hydraulic cylinder; 8. Mounting block; 9. Inspection block; 10. Camera; 11. Flaw detector body; 12. Fixing rod; 13. Return spring; 14. Connecting plate; 15. Laser rangefinder; 16. Connecting rope; 17. Stop block; 18. L-shaped clamp; 19. U-shaped rod; 20. Cylinder; 21. Through groove; 22. Support rod; 23. Servo motor; 24. Slide rail; 25. Slider; 27. First pulley group; 28. Second pulley group; 29. ​​Third pulley group. Detailed Implementation

[0023] This specific embodiment is an automated steel structure strength testing device, such as... Figures 1-6 As shown, the automated steel structure strength testing device includes a testing platform 1, on which two placement plates 2 are fixedly fixed. A clamping assembly is provided on the testing platform 1 to cooperate with the placement plates 2. Two fixing plates 3 are fixedly fixedly fixed on the rear side of the upper surface of the testing platform 1. A lead screw 4 is provided between the two fixing plates 3. A movable block 5 is threaded on the lead screw 4. L-shaped movable plates 6 are fixed at both ends of the movable block 5. A hydraulic cylinder 7 is installed on the top of the inner surface of the upper movable plate 6. An installation block 8 is fixed to the telescopic end of the hydraulic cylinder 7. A pressure sensor is installed at the bottom of the installation block 8. A testing block 9 is connected to the bottom of the pressure sensor. A camera 10 is installed on one side of the installation block 8. A flaw detector body 11 is installed on the bottom of the inner surface of the lower movable plate 6 through an electric push rod. A reset assembly is provided on the rear side of the installation block 8. A laser rangefinder 15 is installed at the front end of the reset assembly.

[0024] The placement plate 2 facilitates the placement of the steel structure to be inspected, and the clamping assembly clamps and fixes the placed steel structure, eliminating the need for manual clamping by personnel. The interaction between the hydraulic cylinder 7 and the mounting block 8 allows for the downward movement of the inspection block 9 to apply pressure to the clamped and fixed steel structure, thus testing its strength. The camera 10 facilitates the acquisition of images of the steel structure surface before and after pressure application, making it easy to observe the deformation of the steel structure. With the help of the pressure sensor, it is easy to monitor the pressure on the steel structure. At the same time, the flaw detector body 11 facilitates the detection of internal cracks in the steel structure after pressure application, effectively improving the inspection effect of the steel structure. The threaded engagement between the lead screw 4 and the movable block 5 allows for flexible adjustment of the left and right movement of the movable block 5. Under the action of the movable plate 6, the inspection block 9 and the flaw detector body 11 move left and right, facilitating the inspection of different parts of the steel structure.

[0025] The reset assembly includes a fixed rod 12, a reset spring 13, a connecting plate 14, a connecting rope 16, a first pulley group 27, a second pulley group 28, and a third pulley group 29. The fixed rod 12 is fixed on the lower movable plate 6. The reset spring 13 is sleeved on the outside of the fixed rod 12. The connecting plate 14 is slidably sleeved on the fixed rod 12, and both ends of the reset spring 13 are connected to the connecting plate 14 and the movable plate 6, respectively. A mounting rod is fixed to the front end of the connecting plate 14, and a laser rangefinder 15 is mounted on the front end of the mounting rod. The first pulley group 27 is located at the rear end of the movable block 5. The second pulley group 28 is located at the top of the upper movable plate 6. The third pulley group 29 is located on the inner surface of the upper movable plate 6. One end of the connecting rope 16 is fixedly connected to the connecting plate 14, and the other end of the connecting rope 16 passes through the first pulley group 27, the second pulley group 28, and the third pulley group 29 in sequence, and is fixedly connected to the rear end of the mounting block 8. Both the upper and lower movable plates 6 have clearance grooves that cooperate with the connecting rope 16.

[0026] The laser rangefinder 15 facilitates the detection of the height of the steel structure inspection area before pressure is applied. During the downward movement of the mounting block 8 pushed by the hydraulic cylinder 7, the connecting rope 16, combined with the sliding cooperation between the connecting plate 14 and the fixed rod 12, facilitates the pulling of the connecting plate 14 towards the movable plate 6 and compresses the return spring 13. At the same time, driven by the mounting rod, the laser rangefinder 15 moves towards the movable plate 6, exposing the part of the steel structure to be inspected, making it easier for the inspection block 9 to contact the steel structure downward for inspection. After the inspection, during the upward movement of the mounting block 8, the elasticity of the return spring 13 drives the laser rangefinder 15 back to its initial position, facilitating the detection of the height of the steel structure inspection area after pressure is applied, further detecting the deformation of the steel structure, and facilitating subsequent continued inspection. The first pulley group 27, the second pulley group 28, and the third pulley group 29 effectively limit and guide the connecting rope 16, ensuring the stability of the connecting rope 16 during the pulling process.

[0027] The clamping assembly includes a stop block 17, an L-shaped clamping plate 18, a U-shaped rod 19, and a cylinder 20. The stop block 17 is fixed to the top rear side of the placement plate 2. The U-shaped rod 19 is movably engaged with the testing table 1. Two L-shaped clamping plates 18 are respectively fixed to both ends of the U-shaped rod 19, and the L-shaped clamping plates 18 cooperate with the placement plate 2 and the stop block 17. The cylinder 20 is installed at the bottom of the testing table 1, and the telescopic end of the cylinder 20 is fixedly connected to the U-shaped rod 19. A through groove 21 is provided on the placement plate 2, which penetrates the testing table 1, and the L-shaped clamping plate 19... The longitudinal plate of the clamping plate 18 cooperates with the through groove 21, and the stop block 17 effectively limits the steel structure placed on the placement plate 2. At the same time, the cylinder 20 can push the U-shaped rod 19 downward, which in turn drives the L clamping plates 18 on both sides to move downward. Combined with the cooperation of the longitudinal plate of the L clamping plate 18 and the through groove 21, it is easy to drive the L clamping plate 18 to press on the steel structure, and press and fix the steel structure on both sides. There is no need for the staff to manually limit and clamp the steel structure to be tested, saving manpower.

[0028] Support rods 22 are provided on both sides of the lead screw 4. The support rods 22 pass through the movable block 5 and slide with the movable block 5. A servo motor 23 is installed on the fixed plate 3 on the left side. The output shaft of the servo motor 23 is connected to the left end of the lead screw 4. A slide rail 24 is provided on the detection table 1. A slider 25 is slidably mounted on the slide rail 24. The slider 25 is fixedly connected to the bottom of the movable plate 6 on the lower side. The support rods 22 effectively support and guide the movable block 5. Combined with the sliding cooperation between the slider 25 and the slide rail 24, the left and right movement of the movable plate 6 is effectively limited and guided, ensuring the stability of the left and right movement of the movable plate 6.

[0029] Example:

[0030] In use, first place both ends of the steel structure to be tested on the placement plates 2 on both sides, so that the steel structure abuts against the stop block 17. At the same time, start the cylinder 20, which pushes the U-shaped rod 19 downward, thereby driving the L-clamp 18 to move closer to the steel structure. As the U-shaped rod 19 moves downward, the longitudinal plate of the L-clamp 18 enters the through groove 21 on the placement plate 2 and continues to move downward along the through groove 21 until the transverse plate of the L-clamp 18 presses on the steel structure, thereby achieving the purpose of pressing and fixing both sides of the steel structure. There is no need for staff to manually limit and clamp the steel structure, saving manpower.

[0031] Then, the servo motor 23 is started, which drives the lead screw 4 to rotate. With the threaded engagement between the movable block 5 and the lead screw 4, combined with the sliding engagement between the movable block 5 and the support rod 22, and the sliding engagement between the slider 25 and the slide rail 24, the movable plate 6 is moved stably along the direction of the lead screw 4, thereby moving the detection block 9 to a suitable position to determine the detection part of the steel structure. At this time, the servo motor 23 is turned off, and the height of the detection part of the steel structure is detected by the laser rangefinder 15.

[0032] Next, the hydraulic cylinder 7 is activated, pushing the mounting block 8 downward, which in turn moves the detection block 9 closer to the steel structure. As the mounting block 8 moves downward, it pulls one end of the connecting rope 16 downward. Under the combined action of the first pulley group 27, the second pulley group 28, and the third pulley group 29, the connecting plate 14 is pulled along the direction of the fixed rod 12 towards the movable plate 6, and the return spring 13 is compressed until the laser rangefinder 15 moves backward. The hydraulic cylinder 7 continues to extend until the detection block 9 moves downward to contact the steel structure, applying pressure to the steel structure for strength testing. The pressure sensor between the detection block 9 and the mounting block 8 monitors the pressure on the steel structure.

[0033] After the pressure is applied, the hydraulic cylinder 7 retracts, causing the detection block 9 to move upward and releasing the connecting rope 16. Under the elastic action of the return spring 13, the connecting plate 14 is driven back to the initial position, which in turn drives the laser rangefinder 15 back to the initial position. At this time, the height of the steel structure detection part is detected again by the laser rangefinder 15 to determine the deformation of the steel structure.

[0034] With the help of camera 10, the deformation of the steel structure inspection area before and after pressure is observed and recorded.

[0035] Meanwhile, with the cooperation of the electric push rod and the flaw detector body 11, the internal cracks of the steel structure inspection parts before and after pressure are inspected, which effectively improves the automation level of steel structure strength inspection and ensures the inspection efficiency of steel structure strength.

[0036] When it is necessary to perform strength tests on different parts of the steel structure, the servo motor 23 and the lead screw 4 are used to continue adjusting the movement of the movable block 5, thereby driving the test block 9 to move, which facilitates the testing of different parts of the steel structure and effectively improves the testing effect of the device.

[0037] It should be further explained that the installation structure, connection method or setting method of each component in this utility model are all common mechanical methods. As long as they can achieve their beneficial effects, they can be implemented. At the same time, the hydraulic cylinder 7, camera 10, flaw detector body 11, laser rangefinder 15, cylinder 20 and servo motor 23 in this utility model are all purchased from the market. Those skilled in the art can install and use them according to the requirements.

[0038] All technical features in this embodiment can be freely combined according to actual needs.

[0039] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A steel structure strength automatic detection device, comprising a detection table (1), characterized in that, The detection platform (1) is relatively fixed with two placement plates (2), the detection platform (1) is provided with a clamping assembly, which is matched with the placement plate (2), the upper surface of the detection platform (1) is relatively fixed with two fixed plates (3), a lead screw (4) is arranged between the two fixed plates (3), a movable block (5) is threadedly arranged on the lead screw (4), L-shaped movable plates (6) are fixed on the upper and lower ends of the movable block (5), a hydraulic cylinder (7) is mounted on the top inner surface of the upper movable plate (6), a mounting block (8) is fixed to the telescopic end of the hydraulic cylinder (7), a pressure sensor is mounted on the bottom of the mounting block (8), a detection block (9) is connected to the bottom of the pressure sensor, a camera (10) is mounted on one side of the mounting block (8), and a flaw detector body (11) is mounted on the bottom inner surface of the lower movable plate (6) through an electric push rod.

2. The steel structure strength automatic detection device according to claim 1, characterized in that, The reset assembly comprises a fixed rod (12), a reset spring (13), a connecting plate (14), a connecting rope (16), a first pulley block (27), a second pulley block (28) and a third pulley block (29), the fixed rod (12) is fixed on the lower movable plate (6), the reset spring (13) is sleeved on the outer side of the fixed rod (12), the connecting plate (14) is slidably sleeved on the fixed rod (12), and the two ends of the reset spring (13) are connected with the connecting plate (14) and the movable plate (6) respectively, and the front end of the connecting plate (14) is fixed with a mounting rod, and the laser range finder (15) is mounted on the front end of the mounting rod.

3. The steel structure strength automatic detection device according to claim 2, characterized in that, The first pulley block (27) is arranged at the rear end of the movable block (5), the second pulley block (28) is arranged at the top of the upper movable plate (6), the third pulley block (29) is arranged on the inner side surface of the upper movable plate (6), one end of the connecting rope (16) is fixedly connected with the connecting plate (14), the other end of the connecting rope (16) passes through the first pulley block (27), the second pulley block (28) and the third pulley block (29) in sequence, and is fixedly connected with the rear end of the mounting block (8), and the upper and lower movable plates (6) are all penetrated by avoiding grooves, which are matched with the connecting rope (16).

4. The steel structure strength automatic detection device according to claim 3, characterized in that, The clamping assembly comprises a stop block (17), an L-shaped clamping plate (18), a U-shaped rod (19) and a gas cylinder (20), the stop block (17) is fixed on the top rear side of the placement plate (2), the U-shaped rod (19) is movably connected with the detection platform (1), the two L-shaped clamping plates (18) are fixed at the two ends of the U-shaped rod (19) respectively, and the L-shaped clamping plates (18) are matched with the placement plate (2) and the stop block (17), and the gas cylinder (20) is mounted on the bottom of the detection platform (1), and the telescopic end of the gas cylinder (20) is fixedly connected with the U-shaped rod (19).

5. The steel structure strength automatic detection device according to claim 4, characterized in that, The placement plate (2) is provided with a through groove (21), the through groove (21) penetrates the detection platform (1), and the longitudinal plate of the L-shaped clamping plate (18) is matched with the through groove (21).

6. The steel structure strength automatic detection device according to claim 5, characterized in that, Supporting rods (22) are arranged on both sides of the lead screw (4), the supporting rods (22) penetrate the movable block (5), and the movable block (5) is in sliding fit with the supporting rods (22); a servo motor (23) is installed on the left fixed plate (3), the output shaft of the servo motor (23) is connected with the left end of the lead screw (4); a slide rail (24) is arranged on the detection table (1), a sliding block (25) is arranged on the slide rail (24) in sliding mode, and the sliding block (25) is fixedly connected with the bottom of the lower movable plate (6).

Images