Steel structure anti-seismic test device

Abstract

The utility model discloses a steel structure anti-seismic testing device which comprises a placing seat and integrated seats, two adjacent integrated seats are arranged in the placing seat, A integrated plates are arranged in the integrated seats, side ball head and ball sleeve assemblies are installed on the side walls of the A integrated plates and connected with the integrated seats, and the integrated seats are connected with the side ball head and ball sleeve assemblies. Servo motors are installed at the bottom ends of the integrated plates A, rotating arms are installed at the output ends of the servo motors, linkage arms are movably installed at one ends of the rotating arms, sliding arms are arranged at the ends, away from the rotating arms, of the linkage arms, and hinge shafts are arranged at the ends, close to the linkage arms, of the sliding arms; and the sliding arm is movably connected with the linkage arm through a hinge shaft. According to the utility model, a steel structure model can be tested by simulating earthquake longitudinal and transverse waves through convenient reciprocating shaking, adaptive tests can be conveniently carried out on steel structure models with different sizes, and the flexibility of test use is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of seismic testing devices, specifically a seismic testing device for steel structures. Background Technology

[0002] Seismic testing involves simulating dynamic load environments such as earthquakes to test building structures, mechanical equipment, electronic devices, and other objects to evaluate their performance, stability, and reliability under seismic loads. The purpose is to verify whether these objects can maintain normal function without damage or failure under specified earthquake intensities. During engineering construction or disaster relief efforts, it is necessary to build steel-structured earthquake-resistant houses for temporary use. To ensure the seismic resistance of these houses after construction, seismic performance testing is generally required. However, the houses are often large, so proportionally scaled steel-structure house models can be used for testing. However, the varying sizes of these models increase the difficulty of testing. To avoid resource waste and to better conduct seismic testing of steel structures, a seismic testing device for steel structures is proposed.

[0003] For example, the seismic testing equipment for steel structure buildings disclosed in the authorization announcement number CN218411619U includes a base plate, a support plate, a fixing component for fixing the steel structure of the building onto the support plate, and a power component for controlling the up-and-down vibration of the support plate; four mounting columns are arranged in a rectangular pattern on the base plate, each mounting column has a cavity, a lifting plate is slidably arranged within the cavity, and a support column is arranged on the lifting plate, the support column penetrating the top inner wall of the cavity, and the support column is slidably connected to the mounting column; the support plate is located at the top of the support column, and a placement groove is provided on the upper surface of the support plate; multiple sets of fixing components are provided, and all sets of fixing components are arranged on the support plate; the power component is located on the base plate;

[0004] Although it enables strength simulation of building steel structures, it does not solve the problem that existing seismic testing devices are not convenient for simulating earthquake P-waves and S-waves during use, nor are they suitable for testing steel structure models of different sizes, thus affecting the flexibility of testing. Utility Model Content

[0005] The purpose of this invention is to provide a seismic testing device for steel structures, in order to solve the problems mentioned in the background art, such as the inconvenience of using reciprocating shaking to simulate seismic P-waves and S-waves to test steel structure models, the difficulty in adapting the device to steel structure models of different sizes, and the impact on the flexibility of testing.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a seismic testing device for steel structures, comprising a placement base and an integrated base. The placement base contains two adjacent integrated bases, each containing an A-type integrated plate. A side ball joint assembly is mounted on the side wall of the A-type integrated plate and connected to the integrated base. A servo motor is mounted at the bottom of each A-type integrated plate, and a rotating arm is mounted at the output end of each servo motor. A linkage arm is movably mounted at one end of each rotating arm, and a sliding arm is mounted at the end of each linkage arm away from the rotating arm. A hinge shaft is mounted at the end of each sliding arm near the linkage arm, and the sliding arm is movably connected to the linkage arm via the hinge shaft. A limit block is mounted at the top of each A-type integrated plate, and the sliding arm is slidably connected to the limit block. A test platform is located inside the placement base on one side of the integrated base. A connecting shaft is mounted at the end of each sliding arm away from the linkage arm, and the sliding arm is movably connected to the test platform via the connecting shaft.

[0007] Preferably, the bottom of the test stand is equipped with multiple sets of lower ball head sleeve assemblies at equal intervals, and the lower ball head sleeve assemblies are connected to the placement seat.

[0008] Preferably, the test bench is equipped with a B-integrated board, and a drive motor is provided at the center of the top of the B-integrated board, with a gear installed at the output end of the drive motor.

[0009] Preferably, sliders are slidably mounted on the top of the B integrated plates on both sides of the drive motor, and racks are mounted on the side walls of the sliders, with the racks meshing with the gears.

[0010] Preferably, two sets of integrated frames are slidably installed on the top of the test bench, and each rack has a connecting block installed on its top, and the connecting block is connected to one of the integrated frames respectively.

[0011] Preferably, a bidirectional lead screw is movably installed inside the integrated frame, and a stepper motor is installed on the side wall of the integrated frame, with the output end of the stepper motor connected to the bidirectional lead screw.

[0012] Preferably, the surface of the bidirectional lead screw is fitted with two sets of threaded sleeves, and the threaded sleeves are threadedly connected to the bidirectional lead screw, and the threaded sleeves are slidably connected to the integrated frame.

[0013] Preferably, each threaded sleeve has a placement block installed at its top end, and the placement block is fixedly connected to the threaded sleeve.

[0014] Compared with the prior art, the beneficial effects of this utility model are: the seismic testing device not only realizes the convenient reciprocating shaking simulation of earthquake P-waves and S-waves to test steel structure models, which facilitates the adaptation test of steel structure models of different sizes, but also improves the flexibility of testing.

[0015] (1) The steel structure model is mounted on the placement block. The servo motor drives the rotating arm to rotate, and the rotating arm drives the linkage arm to swing back and forth. Under the sliding cooperation of the limit block and the sliding arm, the linkage arm drives the sliding arm to move back and forth inside the limit block through the hinge shaft. The side ball head ball sleeve assembly provides movable support for the A integrated plate. The sliding arm drives the test platform to shake through the connecting shaft. The lower ball head ball sleeve assembly provides movable support for the test platform. Since the seismic wave is a longitudinal and transverse wave, the two sets of sliding arms can alternately drive the test platform to shake from two different directions to simulate the seismic wave. By visually observing the damage of the steel structure model, the seismic resistance effect of the steel structure model can be obtained. The convenient reciprocating shaking simulation of the longitudinal and transverse waves of the seismic wave is realized to test the steel structure model.

[0016] (2) When the steel structure models to be tested are of different sizes, the drive motor drives the gear to rotate, and the gear drives the slider to slide towards or away from each other on the surface of the B integrated plate through the rack. At the same time, the rack drives the connecting blocks to move closer or further away from each other, and the connecting blocks drive the integrated frame to move closer or further away from each other. The stepper motor drives the bidirectional lead screw to rotate, and the bidirectional lead screw drives the two sets of threaded sleeves to move closer or further away from each other. The threaded sleeves drive the placement blocks to move closer or further away from each other, thereby adjusting the distance between the placement blocks. With the cooperation of the integrated frame and the placement blocks, steel structure models of different sizes can be installed to adapt to the test, thereby improving the flexibility of the test. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a three-dimensional perspective structural diagram of the placement base of this utility model;

[0019] Figure 3 This is a three-dimensional perspective structural diagram of the integrated base of this utility model;

[0020] Figure 4 This is a three-dimensional perspective structural diagram of the test platform of this utility model;

[0021] Figure 5 This is a front view cross-sectional structural diagram of the integrated frame of this utility model.

[0022] In the diagram: 1. Placement seat; 2. Integrated seat; 3. Test bench; 4. Integrated frame; 5. Lower ball head sleeve assembly; 6. Placement block; 7. Side ball head sleeve assembly; 8. A integrated plate; 9. Connecting shaft; 10. Servo motor; 11. Rotating arm; 12. Linkage arm; 13. Hinge shaft; 14. Sliding arm; 15. Limiting block; 16. B integrated plate; 17. Drive motor; 18. Gear; 19. Rack; 20. Connecting block; 21. Slider; 22. Threaded sleeve; 23. Bidirectional lead screw; 24. Stepper motor. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0024] Please see Figure 1-5 This utility model provides an embodiment of a steel structure seismic testing device, comprising a placement base 1 and an integrated base 2. The placement base 1 contains two adjacent integrated bases 2, each containing an A-integrated plate 8. A side ball joint sleeve assembly 7 is mounted on the side wall of the A-integrated plate 8 and connected to the integrated base 2. A servo motor 10 is mounted at the bottom of each A-integrated plate 8, providing power drive. A rotating arm 11 is mounted at the output end of each servo motor 10, with one end of each rotating arm 11 movably mounted. There is a linkage arm 12, and a sliding arm 14 is provided at the end of the linkage arm 12 away from the rotating arm 11. A hinge shaft 13 is provided at the end of the sliding arm 14 close to the linkage arm 12. The sliding arm 14 is movably connected to the linkage arm 12 through the hinge shaft 13. A limit block 15 is installed at the top of the A integrated plate 8, and the sliding arm 14 is slidably connected to the limit block 15. A test table 3 is provided inside the placement seat 1 on one side of the integrated base 2. A connecting shaft 9 is provided at the end of the sliding arm 14 away from the linkage arm 12, and the sliding arm 14 is movably connected to the test table 3 through the connecting shaft 9.

[0025] First, the steel structure model's feet are installed on the placement block 6. The servo motor 10 is turned on, and the servo motor 10 drives the rotating arm 11 to rotate. The rotating arm 11 drives the linkage arm 12 to swing back and forth. Under the sliding cooperation of the limiting block 15 and the sliding arm 14, the linkage arm 12 drives the sliding arm 14 to move back and forth inside the limiting block 15 through the hinge shaft 13. The side ball head sleeve assembly 7 provides movable support for the A integrated plate 8. The sliding arm 14 drives the test platform 3 to shake through the connecting shaft 9. The lower ball head sleeve assembly 5 provides movable support for the test platform 3. Since seismic waves are P-waves and S-waves, the two sets of sliding arms 14 can alternately drive the test platform 3 to shake from two different directions to simulate seismic waves. By visually observing the damage to the steel structure model, the seismic resistance effect of the steel structure model can be obtained. This realizes the convenient reciprocating shaking simulation of seismic P-waves and S-waves to test the steel structure model.

[0026] Multiple sets of lower ball head sleeve assemblies 5 with equal spacing are installed at the bottom of the test stand 3, and the lower ball head sleeve assemblies 5 are connected to the placement seat 1;

[0027] The test bench 3 has a B integrated board 16 installed inside. A drive motor 17 is set at the center of the top of the B integrated board 16. The drive motor 17 plays the role of power driving. A gear 18 is installed at the output end of the drive motor 17. A slider 21 is slidably installed on the top of the B integrated board 16 on both sides of the drive motor 17. A rack 19 is installed on the side wall of the slider 21, and the rack 19 and the gear 18 mesh with each other.

[0028] Two sets of integrated frames 4 are slidably installed on the top of the test bench 3, and each rack 19 has a connecting block 20 installed on its top, and the connecting block 20 is connected to one of the integrated frames 4 respectively.

[0029] All internal components of the integrated frame 4 are equipped with bidirectional lead screws 23. All side walls of the integrated frame 4 are equipped with stepper motors 24, which serve as power drives. The output end of the stepper motors 24 is connected to the bidirectional lead screws 23. Two sets of threaded sleeves 22 are fitted on the surface of the bidirectional lead screws 23. The threaded sleeves 22 are threadedly connected to the bidirectional lead screws 23 and are slidably connected to the integrated frame 4.

[0030] Each threaded sleeve 22 has a placement block 6 installed at its top end, and the placement block 6 is fixedly connected to the threaded sleeve 22.

[0031] If the dimensions of the steel structure model to be tested are different, turn on the drive motor 17, which drives the gear 18 to rotate. Under the mutual meshing of the gear 18 and the rack 19, and the sliding engagement of the slider 21 and the B integrated plate 16, the gear 18 drives the slider 21 to slide towards or away from each other on the surface of the B integrated plate 16 through the rack 19. At the same time, the rack 19 drives the connecting blocks 20 to move closer or further apart, and the connecting blocks 20 respectively drive the integrated frame 4 to move closer or further apart. Simultaneously, turn on the stepper motor 24, which drives the stepper motor 25 to rotate. 4 drives the bidirectional lead screw 23 to rotate. With the threaded connection between the bidirectional lead screw 23 and the threaded sleeve 22, and the sliding fit between the threaded sleeve 22 and the integrated frame 4, the bidirectional lead screw 23 drives the two sets of threaded sleeves 22 to move closer or further apart. The threaded sleeves 22 respectively drive the placement blocks 6 to move closer or further apart, thereby adjusting the distance between the placement blocks 6. With the cooperation between the integrated frame 4 and the placement blocks 6, it can adapt to the installation of steel structure models of different sizes, thereby testing steel structure models of different sizes and improving the flexibility of testing.

[0032] Working principle: First, the steel structure model is mounted on the placement block 6. The servo motor 10 drives the rotating arm 11 to rotate, which in turn drives the linkage arm 12 to swing back and forth. The linkage arm 12, via the hinge shaft 13, drives the sliding arm 14 to move back and forth inside the limiting block 15. The side ball joint assembly 7 provides movable support for the A integrated plate 8. The sliding arm 14, via the connecting shaft 9, causes the test platform 3 to shake. The lower ball joint assembly 5 provides movable support for the test platform 3. Because seismic waves are both longitudinal and transverse waves, two sets of sliding arms 14 can alternately drive the test platform 3 to shake from two different directions to simulate seismic waves. The damage to the steel structure model is visually observed. If the dimensions of the steel structure models to be tested are different, the drive... Motor 17 drives gear 18 to rotate, and gear 18 drives slider 21 to slide on the surface of integrated plate 16 of B via rack 19. At the same time, rack 19 drives connecting blocks 20 to move closer or further apart, and connecting blocks 20 drive integrated frames 4 to move closer or further apart. Stepper motor 24 drives bidirectional lead screw 23 to rotate, and bidirectional lead screw 23 drives two sets of threaded sleeves 22 to move closer or further apart, and threaded sleeves 22 drive placement blocks 6 to move closer or further apart, thereby adjusting the distance between placement blocks 6. With the cooperation of integrated frames 4 and placement blocks 6, steel structure models of different sizes can be installed to test steel structure models of different sizes. The above is the complete usage of the steel structure seismic testing device.

Claims

1. A device for testing the seismic resistance of a steel structure, comprising a resting seat (1) and an integrated seat (2), characterized in that: The inside of the placing seat (1) is provided with two groups of adjacent integrated seats (2), the inside of the integrated seat (2) is provided with an A integrated plate (8), the side wall of the A integrated plate (8) is provided with a side ball head ball sleeve assembly (7), the side ball head ball sleeve assembly (7) is connected with the integrated seat (2), the bottom end of the A integrated plate (8) is provided with a servo motor (10), the output end of the servo motor (10) is provided with a rotating arm (11), one end of the rotating arm (11) is movably provided with a linkage arm (12), the end of the linkage arm (12) away from the rotating arm (11) is provided with a sliding arm (14), the end of the sliding arm (14) close to the linkage arm (12) is provided with a hinged shaft (13), the sliding arm (14) is movably connected with the linkage arm (12) through the hinged shaft (13), the top end of the A integrated plate (8) is provided with a limit block (15), the sliding arm (14) is slidably connected with the limit block (15), the inside of the placing seat (1) on one side of the integrated seat (2) is provided with a test table (3), the end of the sliding arm (14) away from the linkage arm (12) is provided with a connecting shaft (9), and the sliding arm (14) is movably connected with the test table (3) through the connecting shaft (9).

2. The steel structure anti-seismic testing device according to claim 1, characterized in that: The bottom end of the test table (3) is provided with a plurality of groups of lower ball head ball sleeve assemblies (5) at equal intervals, and the lower ball head ball sleeve assemblies (5) are connected with the placing seat (1).

3. The steel structure anti-seismic testing device according to claim 1, characterized in that: The inside of the test table (3) is provided with a B integrated plate (16), the center of the top end of the B integrated plate (16) is provided with a driving motor (17), and the output end of the driving motor (17) is provided with a gear (18).

4. The steel structure anti-seismic testing device according to claim 3, characterized in that: The top end of the B integrated plate (16) on both sides of the driving motor (17) is slidably provided with a sliding block (21), the side wall of the sliding block (21) is provided with a rack (19), and the rack (19) is meshed with the gear (18).

5. The steel structure anti-seismic testing device according to claim 1, characterized in that: The top end of the test table (3) is slidably provided with two groups of integrated frames (4), the top end of the rack (19) is provided with a connecting block (20), and the connecting block (20) is connected with one of the integrated frames (4).

6. The steel structure anti-seismic testing device according to claim 5, characterized in that: The inside of the integrated frame (4) is movably provided with a bidirectional screw rod (23), the side wall of the integrated frame (4) is provided with a stepping motor (24), and the output end of the stepping motor (24) is connected with the bidirectional screw rod (23).

7. The steel structure anti-seismic testing device according to claim 6, characterized in that: The surface of the bidirectional screw rod (23) is sleeved with two groups of threaded sleeves (22), the threaded sleeves (22) are threadedly connected with the bidirectional screw rod (23), and the threaded sleeves (22) are slidably connected with the integrated frame (4).

8. The steel structure anti-seismic testing device according to claim 7, characterized in that: The top end of the threaded sleeve (22) is provided with a placing block (6), and the placing block (6) is fixedly connected with the threaded sleeve (22).

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