A steel structure strength testing device

Abstract

This invention discloses a steel structure strength testing device in the field of steel structure strength testing technology. It includes a housing with two rotating mechanisms inside. Two locking mechanisms are installed on the bottom surface of the inner wall of the housing, and the locking mechanisms are movably connected to the rotating mechanisms. A fixing mechanism is installed on the rotating mechanisms. Gear rings are installed on both the left and right sides of the inner wall of the housing, and the gear rings are movably engaged with the fixing mechanisms. A hydraulic rod is installed inside the housing, and two pairs of first, second, and third racks are installed on the hydraulic rod. The first rack is movably engaged with the rotating mechanisms, the second rack is movably engaged with the locking mechanisms, and the third rack is movably engaged with the fixing mechanisms. A tester is installed at one end of the hydraulic rod. This device effectively improves the testing efficiency and makes testing more convenient and faster.

Description

Technical Field

[0001] This invention relates to the field of steel structure strength testing technology, specifically to a steel structure component strength testing device. Background Technology

[0002] Steel structures are a common type of structure used in building construction. Most steel structures bear heavy loads, thus requiring high strength. After production, the strength of the steel structure needs to be tested to ensure it meets usage requirements. Therefore, appropriate strength testing devices are necessary. However, existing steel structure strength testing devices on the market still have certain shortcomings. For example, patent number CN201910689934.3 discloses a technical solution for steel structure strength testing, but this solution has some problems in use. Generally, during testing, the material needs to be fixed in a certain position and then pressed down by a hydraulic rod. During this pressing process, the material may break, leaving debris in the fixing mechanism. When testing again, this debris needs to be cleaned before placing the object to be tested. This solution requires manual operation for both fixing and removing the material, resulting in numerous steps and reduced efficiency.

[0003] Based on this, the present invention designs a steel structure construction strength testing device to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to provide a steel structure strength testing device to solve the problem mentioned in the background art that the materials need to be manually fixed and removed during testing, resulting in numerous equipment operation steps and reduced testing efficiency.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A steel structure strength testing device includes a housing with two rotating mechanisms inside. Two locking mechanisms are installed on the bottom surface of the inner wall of the housing, and the locking mechanisms are movably connected to the rotating mechanisms. A fixing mechanism is provided on each rotating mechanism. Gear rings are installed on both the left and right sides of the inner wall of the housing, and these gear rings are movably engaged with the fixing mechanisms. A hydraulic rod is installed inside the housing, and two pairs of first, second, and third racks are installed on the hydraulic rod. The first racks are movably engaged with the rotating mechanisms, the second racks are movably engaged with the locking mechanisms, and the third racks are movably engaged with the fixing mechanisms. A tester is installed at one end of the hydraulic rod.

[0007] As a further embodiment of the present invention, the two rotating mechanisms are installed opposite to each other, and a storage slot is provided inside the box. The storage slot is T-shaped, and the rotating mechanisms are located on both sides of the storage slot.

[0008] As a further embodiment of the present invention, the rotating mechanism includes a rotating seat, a rotating shaft, an arc-shaped disk, and a one-way wheel. The rotating seat is installed on the bottom surface of the inner wall of the housing. The rotating shaft is rotatably connected to the rotating seat. The arc-shaped disk is installed on the rotating shaft and is rotatably connected inside the rotating seat. The upper side of the arc-shaped disk is horizontal. A one-way wheel is installed at one end of the rotating shaft. The one-way wheel is movably engaged with a first rack. A fixing groove is provided on one side of the arc-shaped disk. A torsion spring is provided on the rotating shaft.

[0009] As a further embodiment of the present invention, the locking mechanism includes a fixed seat, a slide rod, a plug, a spring, a protrusion, a first rotating column, a cam, a self-locking assembly, a first gear, a speed regulating assembly, and a second gear. A fixed seat is installed inside the housing, and a slide rod is slidably connected to the fixed seat. A spring is sleeved on the slide rod. A plug is installed at one end of the slide rod, and the plug is movably connected to a fixed groove. A protrusion is installed at the other end of the slide rod. A first rotating column is rotatably connected to the fixed seat, and a cam is installed on the first rotating column. The cam and the protrusion are movably connected. A first gear is installed at one end of the first rotating column. A speed regulating assembly is installed on the bottom surface of the inner wall of the housing. The speed regulating assembly has two second gears, one of which meshes with the first gear, and the other second gear movably meshes with the second rack.

[0010] As a further embodiment of the present invention, the first rotating column is provided with a self-locking component, which is located on one side of the cam.

[0011] As a further embodiment of the present invention, the fixing mechanism includes a clamping plate, a threaded rod, a pressure plate, a third gear, a telescopic rod, a fourth gear, a second rotating column, a fifth gear, and a sixth gear. The clamping plate is mounted on the arc-shaped disk, and a threaded rod is threadedly connected to the clamping plate. A pressure plate is mounted on one end of the threaded rod, and a third gear is mounted on the other end. A telescopic rod is rotatably connected to the clamping plate, and a fourth gear is mounted on the telescopic rod. The third and fourth gears mesh with each other. A second rotating column is rotatably connected to the upper side of the clamping plate. Both the second rotating column and the telescopic rod are provided with conical teeth, which mesh with each other. A fifth gear is mounted on the second rotating column. A sixth gear is rotatably connected to one side of the clamping plate. The fifth and sixth gears mesh with each other. The fifth gear engages movably with the third rack, and the sixth gear engages movably with the gear ring. The sixth gear is unidirectional.

[0012] As a further embodiment of the present invention, the clamping plate is I-shaped, and the surface of the pressure plate is provided with a rubber anti-slip layer.

[0013] As a further embodiment of the present invention, a door is rotatably connected to the front side of the box body, the door is provided with an observation window, a handle is installed on the door, and the surface of the handle is provided with a rubber anti-slip layer.

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

[0015] This invention utilizes the interplay of a first rack, second rack, third rack, and gear ring in the device. During use, the object to be tested can be directly placed in two fixing mechanisms without manual fixation, thus reducing testing steps and increasing testing efficiency. When the hydraulic rod pushes the tester downwards for testing, the second rack, in conjunction with a locking mechanism, locks the rotating mechanism, preventing the fixing mechanism from tilting or changing position during testing, which could affect test accuracy. Furthermore, when the third rack cooperates with the fixing mechanism, the descent of the hydraulic rod is facilitated by the third rack. The control and fixing mechanism secures the material, reducing manual operation steps. During material testing, if material breakage occurs, the broken material enters the lower part of the chamber. The material remaining in the fixing mechanism is then lifted by the hydraulic rod, causing the first rack to engage with the rotating mechanism. Simultaneously, the fixing mechanism and the gear ring engage, causing the remaining fragments in the fixing mechanism to detach. This not only reduces the fixing steps but also the material removal steps. For each test, the material only needs to be placed in the fixing mechanism to complete the test, further improving the equipment's testing efficiency, reducing testing steps, and enhancing testing safety. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the front view structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the front-view cross-sectional structure of the present invention;

[0019] Figure 3 This is a schematic diagram of the internal structure of the invention from a frontal view.

[0020] Figure 4 This is a schematic diagram of the internal structure of the present invention from a rear view.

[0021] Figure 5 This is a schematic diagram of the internal structure of the invention from a partial left-side view.

[0022] Figure 6 This is a schematic diagram of the internal structure of the present invention from a partial lower view.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 1. Housing; 2. Rotating mechanism; 3. Rotating seat; 4. Rotating shaft; 5. Arc-shaped disc; 6. One-way wheel; 7. Fixing groove; 8. Locking mechanism; 9. Fixing seat; 10. Slide rod; 11. Insert block; 12. Spring; 13. Protrusion; 14. First rotating column; 15. Cam; 16. Self-locking assembly; 17. First gear; 18. Speed ​​regulating assembly; 19. Second gear; 20. Fixing mechanism; 21. Clamping plate; 22. Threaded rod; 23. Pressure plate; 24. Third gear; 25. Telescopic rod; 26. Fourth gear; 27. Second rotating column; 28. Fifth gear; 29. ​​Sixth gear; 30. Gear ring; 31. Hydraulic rod; 32. First rack; 33. Second rack; 34. Third rack; 35. Tester; 36. Housing door. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. 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.

[0026] Please see Figures 1-6 The present invention provides a technical solution:

[0027] A steel structure strength testing device includes a housing 1, with two rotating mechanisms 2 inside the housing 1. Two locking mechanisms 8 are installed on the bottom surface of the inner wall of the housing 1, and the locking mechanisms 8 are movably connected to the rotating mechanisms 2. A fixing mechanism 20 is provided on the rotating mechanism 2. Gear rings 30 are installed on both the left and right sides of the inner wall of the housing 1, and the gear rings 30 are movably engaged with the fixing mechanism 20. A hydraulic rod 31 is installed inside the housing 1, and two pairs of first racks 32, second racks 33 and third racks 34 are installed on the hydraulic rod 31. The first racks 32 are movably engaged with the rotating mechanism 2, the second racks 33 are movably engaged with the locking mechanism 8, and the third racks 34 are movably engaged with the fixing mechanism 20. A tester 35 is installed at one end of the hydraulic rod 31.

[0028] During operation, the chamber door 36 is opened, and the item to be tested is placed between the two fixed mechanisms 20. Then, the hydraulic rod 31 is directly lowered. When the hydraulic rod 31 lowers, the first rack 32, second rack 33, and third rack 34 on the hydraulic rod 31 lower simultaneously. Because the rotating mechanism 2 is equipped with a one-way wheel 6, when the first rack 32 lowers, the one-way wheel 6 does not rotate. At this time, the second rack 33 engages with the locking mechanism 8, and in conjunction with the lowering of the hydraulic rod 31, the locking mechanism 8 unfolds, thereby fixing the rotating mechanism 2. When the rotating mechanism 2 is fixed, the third rack 34 simultaneously drives the fixed mechanism 20 to work. When the fixed mechanism 20 works, the parts in the fixed mechanism 20 directly fix the material between the two fixed mechanisms 20. Simultaneously, as the hydraulic rod 31 lowers, when the hydraulic rod 31 reaches a certain height, the third rack 34... The fixing mechanism 20 disengages, thus securing the material. The tester 35, mounted on one end of the hydraulic rod 31, then tests the material. After the test, the material between the two fixing mechanisms 20 breaks, and the fragments fall to the lower side of the housing 1. At this point, the hydraulic rod 31 retracts. As the hydraulic rod 31 retracts, the second rack 33 disengages the locking mechanism 8 and the rotating mechanism 2. Meanwhile, the first rack 32 rotates the rotating mechanism 2, causing the fixing mechanism 20 on the rotating mechanism 2 to tilt. When the rotating mechanism 2 tilts, the fixing mechanism 20 and the toothed ring 30 mesh simultaneously, causing the toothed ring 30 to open the fixing mechanism 20, allowing the fragments held in the fixing mechanism 20 to fall out. When the hydraulic rod 31 returns to the appropriate position, the rotating mechanism 2 resets, and the fixing mechanism 20 resets as well. At this point, another test can be performed.

[0029] This invention utilizes the interplay of the first rack 32, second rack 33, third rack 34, and gear ring 30 in the device. During use, the object to be tested can be directly placed in the two fixing mechanisms 20 without manual fixation, thus reducing testing steps and increasing testing efficiency. When the hydraulic rod 31 pushes the tester 35 for descent testing, the second rack 33, in conjunction with the locking mechanism 8, locks the rotating mechanism 2, preventing the fixing mechanism 20 from tilting or changing position during testing, which could affect testing accuracy. Furthermore, when the third rack 34 engages with the fixing mechanism 20, the descent of the hydraulic rod 31 can be controlled by the third rack 34. The rack 34 controls the fixing mechanism 20 to fix the material, thereby reducing manual operation steps. When the material is tested, if material breakage occurs, the broken material enters the lower side of the housing 1, while the material remaining in the fixing mechanism 20 is lifted by the hydraulic rod 31, which causes the first rack 32 to cooperate with the rotating mechanism 2. At the same time, the fixing mechanism 20 and the gear ring 30 cooperate, causing the fragments remaining in the fixing mechanism 20 to detach from the fixing mechanism 20. This not only reduces the fixing steps but also the material removal steps. Each time the material is tested, it only needs to be placed in the fixing mechanism 20 to complete the test, further improving the testing efficiency of the equipment, reducing the testing steps, and improving the testing safety of the equipment.

[0030] As a further embodiment of the present invention, two rotating mechanisms 2 are installed opposite to each other, and a storage slot is provided inside the box 1. The storage slot is T-shaped, and the rotating mechanisms 2 are located on both sides of the storage slot.

[0031] During operation, when the material is placed in the fixed mechanism 20, the material is tested. During the test, if the material breaks and produces fragments, the material enters the collection tank and the equipment collects the material, thereby preventing the material from jumping out during the test and further improving the testing safety of the equipment.

[0032] As a further embodiment of the present invention, the rotating mechanism 2 includes a rotating seat 3, a rotating shaft 4, an arc-shaped disk 5, and a one-way wheel 6. The rotating seat 3 is installed on the bottom surface of the inner wall of the housing 1. The rotating shaft 4 is rotatably connected to the rotating seat 3. The arc-shaped disk 5 is installed on the rotating shaft 4. The arc-shaped disk 5 is rotatably connected inside the rotating seat 3. The upper side of the arc-shaped disk 5 is horizontal. One end of the rotating shaft 4 is equipped with a one-way wheel 6. The one-way wheel 6 and the first rack 32 are in active engagement. A fixing groove 7 is opened on one side of the arc-shaped disk 5. A torsion spring is provided on the rotating shaft 4.

[0033] During operation, when the hydraulic rod 31 descends, the first rack 32 descends simultaneously. At this time, the first rack 32 meshes with the one-way wheel 6, while the one-way wheel 6 does not rotate. After the material testing is completed, the hydraulic rod 31 rises, and the first rack 32 drives the one-way wheel 6 to rotate, which in turn causes the rotating shaft 4 to rotate. When the rotating shaft 4 rotates, the arc-shaped disk 5 mounted on the rotating shaft 4 rotates within the rotating seat 3, causing the fixing mechanism 20 on the arc-shaped disk 5 to tilt. At this time, the torsion spring on the rotating shaft 4 is compressed. When the arc-shaped disk 5 rotates to a certain position, the first rack 32 disengages from the one-way wheel 6. At this time, the arc-shaped disk 5 resets under the action of the torsion spring, allowing the remaining debris in the fixing mechanism 20 to be discharged. This reduces manual operation steps, making material removal simpler and more convenient when the material self-test is completed, further improving the working efficiency of the equipment.

[0034] As a further embodiment of the present invention, the locking mechanism 8 includes a fixed seat 9, a slide rod 10, a plug 11, a spring 12, a protrusion 13, a first rotating column 14, a cam 15, a self-locking component 16, a first gear 17, a speed regulating component 18, and a second gear 19. The fixed seat 9 is installed inside the housing 1. The slide rod 10 is slidably connected to the fixed seat 9. The spring 12 is sleeved on the slide rod 10. The plug 11 is installed at one end of the slide rod 10 and is movably connected in the fixed groove 7. The protrusion 13 is installed at the other end of the slide rod 10. The first rotating column 14 is rotatably connected to the fixed seat 9. The cam 15 is installed on the first rotating column 14 and is movably connected to the protrusion 13. The first gear 17 is installed at one end of the first rotating column 14. The speed regulating component 18 is installed on the bottom surface of the inner wall of the housing 1. The speed regulating component 18 is provided with two second gears 19. One of the second gears 19 meshes with the first gear 17, and the other second gear 19 is movably meshed with the second rack 33.

[0035] During operation, when the hydraulic rod 31 descends, the second rack 33 drives one of the second gears 19 to rotate. When the second gear 19 rotates, the second rack 33 controls the first gear 17 to rotate via the speed regulating component 18. When the first gear 17 rotates, it drives the first rotating column 14 to rotate. When the first rotating column 14 rotates, the cam 15 mounted on it rotates simultaneously. When the protrusion of the cam 15 rotates to the position of the protrusion 13, the cam 15 presses against the protrusion 13. At this time, the slide rod 10 slides, and the spring 12 is compressed. When the slide rod 10 slides to a certain position, it is inserted into the fixed groove 7. At this time, the second rack 33 and the second gear 19 disengage, and the rotating mechanism 2 is fixed, thereby effectively improving the stability of the rotating mechanism 2 and making it more stable during use. This prevents the material from tilting or shaking during the testing process, which would affect the accuracy and stability of the material testing.

[0036] As a further embodiment of the present invention, a self-locking component 16 is provided on the first rotating column 14, and the self-locking component 16 is located on one side of the cam 15.

[0037] During operation, when the first rotating column 14 rotates to a certain position, the first rotating column 14 is fixed by the self-locking component 16, thereby improving the stability of the cam 15 when rotating, preventing the cam 15 and the protrusion 13 from disengaging, which would otherwise cause material to detach during use, and further ensuring its stability.

[0038] As a further embodiment of the present invention, the fixing mechanism 20 includes a clamping plate 21, a threaded rod 22, a pressure plate 23, a third gear 24, a telescopic rod 25, a fourth gear 26, a second rotating column 27, a fifth gear 28, and a sixth gear 29. The clamping plate 21 is mounted on the arc-shaped disk 5. The threaded rod 22 is threadedly connected to the clamping plate 21. A pressure plate 23 is mounted at one end of the threaded rod 22, and a third gear 24 is mounted at the other end of the threaded rod 22. A telescopic rod 25 is rotatably connected to the clamping plate 21, and a fourth gear 26 is mounted on the telescopic rod 25. Wheel 26, third gear 24 and fourth gear 26 mesh with each other. A second rotating column 27 is rotatably connected to the upper side of clamping plate 21. Both the second rotating column 27 and telescopic rod 25 are provided with conical teeth. The two conical teeth mesh with each other. A fifth gear 28 is installed on the second rotating column 27. A sixth gear 29 is rotatably connected to one side of clamping plate 21. The fifth gear 28 and the sixth gear 29 mesh with each other. The fifth gear 28 is movably meshed with the third rack 34. The sixth gear 29 is movably meshed with the gear ring 30. The sixth gear 29 is unidirectional.

[0039] During operation, when the hydraulic rod 31 descends, the third rack 34 drives the fifth gear 28 to rotate. When the fifth gear 28 rotates, the second rotating column 27 rotates. When the second rotating column 27 rotates, it drives the telescopic rod 25 to rotate. At this time, the fourth gear 26 on the telescopic rod 25 drives the third gear 24 to rotate. When the third gear 24 rotates, the telescopic rod 25 extends, keeping the third gear 24 and the fourth gear 26 engaged. Simultaneously, the threaded rod 22 descends. When the threaded rod 22 descends, the pressure plate 23 installed at one end of the threaded rod 22 fixes the material. As the hydraulic rod 31 descends, the third rack 34 and the fifth gear 28 disengage, thus ensuring the stability of the material. After the equipment test is completed, the hydraulic rod 31 rises. At this time, the first rack 32 drives the rotating mechanism 2 to rotate. When the rotating mechanism 2 rotates... The fixing mechanism 20 tilts simultaneously. During the tilting process, the sixth gear 29 meshes with the gear ring 30, and the sixth gear 29 rotates in accordance with the trajectory of the gear ring 30. This causes the fifth gear 28 to rotate in reverse in conjunction with the third gear 24 and the fourth gear 26, thereby causing the threaded rod 22 to rise. This separates the pressure plate 23 from the crushed material. At this time, the fixing mechanism 20 is in a tilted state, which causes the crushed material to detach from the fixing mechanism 20. When the first rack 32 disengages from the one-way wheel 6, the rotating mechanism 2 resets. Since the sixth gear 29 is one-way, it does not rotate when it resets. This causes the fixing mechanism 20 to be in an open state when it resets. At this time, other test materials can be placed into the fixing mechanism 20 to repeat the work, thereby ensuring the efficiency of the equipment during operation and further reducing the number of test operation steps.

[0040] As a further embodiment of the present invention, the clamping plate 21 is I-shaped and the surface of the pressure plate 23 is provided with a rubber anti-slip layer;

[0041] During operation, the pressure plate 23 can effectively clamp the material, and at the same time, the rubber anti-slip layer fixes the material, further improving the stability of the equipment when it is fixed.

[0042] As a further embodiment of the present invention, a door 36 is rotatably connected to the front side of the box body 1. The door 36 is provided with an observation window and a handle is installed on the door 36. The surface of the handle is provided with a rubber anti-slip layer.

[0043] When testing is required during operation, the chamber door 36 is opened, and the material to be tested is placed in the fixing mechanism 20 for testing. During the testing process, the working status of the equipment can be observed through the observation window. At the same time, the chamber door 36 can effectively prevent material fragments from flying during testing, thereby ensuring the safety of material testing.

Claims

1. A steel structure strength testing device, comprising a housing (1), characterized in that: The box (1) is provided with two rotating mechanisms (2). The bottom surface of the inner wall of the box (1) is equipped with two locking mechanisms (8). The locking mechanisms (8) and the rotating mechanisms (2) are movably connected. The rotating mechanisms (2) are provided with a fixing mechanism (20). The left and right sides of the inner wall of the box (1) are equipped with toothed rings (30). The toothed rings (30) and the fixing mechanism (20) are movably engaged. The box (1) is equipped with a hydraulic rod (31). The hydraulic rod (31) is equipped with two pairs of first racks (32), second racks (33) and third racks (34). The first racks (32) are movably engaged with the rotating mechanisms (2). The second racks (33) are movably engaged with the locking mechanisms (8). The third racks (34) are movably engaged with the fixing mechanism (20). A tester (35) is installed at one end of the hydraulic rod (31). The rotating mechanism (2) includes a rotating seat (3), a rotating shaft (4), an arc-shaped disk (5), and a one-way wheel (6). The rotating seat (3) is installed on the bottom surface of the inner wall of the housing (1). The rotating shaft (4) is rotatably connected to the rotating seat (3). The arc-shaped disk (5) is installed on the rotating shaft (4). The arc-shaped disk (5) is rotatably connected inside the rotating seat (3). The upper side of the arc-shaped disk (5) is horizontal. One end of the rotating shaft (4) is equipped with a one-way wheel (6). The one-way wheel (6) and the first rack (32) are in active engagement. A fixing groove (7) is opened on one side of the arc-shaped disk (5). A torsion spring is provided on the rotating shaft (4). The locking mechanism (8) includes a fixed seat (9), a slide rod (10), a plug (11), a spring (12), a protrusion (13), a first rotating column (14), a cam (15), a self-locking assembly (16), a first gear (17), a speed regulating assembly (18), and a second gear (19). The fixed seat (9) is installed inside the housing (1). The slide rod (10) is slidably connected to the fixed seat (9). The spring (12) is sleeved on the slide rod (10). A plug (11) is installed at one end of the slide rod (10). The plug (11) is movably connected in the fixed groove (7). A protrusion (13) is installed at the other end. A first rotating column (14) is rotatably connected to the fixed seat (9). A cam (15) is installed on the first rotating column (14). The cam (15) and the protrusion (13) are movably connected. A first gear (17) is installed at one end of the first rotating column (14). A speed regulating component (18) is installed on the bottom surface of the inner wall of the box (1). Two second gears (19) are provided on the speed regulating component (18). One of the second gears (19) meshes with the first gear (17), and the other second gear (19) meshes with the second rack (33). The fixing mechanism (20) includes a clamping plate (21), a threaded rod (22), a pressure plate (23), a third gear (24), a telescopic rod (25), a fourth gear (26), a second rotating column (27), a fifth gear (28), and a sixth gear (29). The clamping plate (21) is mounted on the arc-shaped disk (5). The threaded rod (22) is threadedly connected to the clamping plate (21). The pressure plate (23) is mounted on one end of the threaded rod (22), and the third gear (24) is mounted on the other end of the threaded rod (22). The telescopic rod (25) is rotatably connected to the clamping plate (21), and the fourth gear (26) is mounted on the telescopic rod (25). The third gear (24) and the fourth gear (26) mesh with each other. The upper side of the clamping plate (21) is rotatably connected to the second rotating column (27). The second rotating column (27) and the telescopic rod (25) are both provided with conical teeth. The two conical teeth mesh with each other. The second rotating column (27) is equipped with the fifth gear (28). The clamping plate (21) is rotatably connected to the sixth gear (29). The fifth gear (28) and the sixth gear (29) mesh with each other. The fifth gear (28) and the third rack (34) are movably meshed. The sixth gear (29) and the gear ring (30) are movably meshed. The sixth gear (29) is unidirectional.

2. The steel structure strength testing device according to claim 1, characterized in that: The two rotating mechanisms (2) are installed opposite each other. The housing (1) has a storage slot in the shape of a T. The rotating mechanisms (2) are located on both sides of the storage slot.

3. The steel structure strength testing device according to claim 1, characterized in that: The first rotating column (14) is provided with a self-locking component (16), which is located on one side of the cam (15).

4. The steel structure strength testing device according to claim 3, characterized in that: The clamping plate (21) is I-shaped, and the surface of the pressure plate (23) is provided with a rubber anti-slip layer.

5. The steel structure strength testing device according to claim 1, characterized in that: The front side of the box (1) is rotatably connected to a box door (36), the box door (36) is provided with an observation window, the box door (36) is equipped with a handle, and the surface of the handle is provided with a rubber anti-slip layer.

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