Civil engineering structure anti-seismic test device

Abstract

The invention relates to the technical field of civil engineering anti-seismic tests, and provides a civil engineering structure anti-seismic test device which comprises a supporting base, and an experiment table is arranged at the top end of the supporting base; according to the device, a second gear drives a third gear to rotate, the third gear drives a fourth gear to rotate, the fourth gear drives a reciprocating lead screw to rotate, the reciprocating lead screw drives a movable sliding block to move in a reciprocating mode, so that an ejector block moves to extrude lifting plates, and due to the fact that the lifting plates are sequentially extruded by the ejector block to ascend; when the jacking block is separated from one lifting plate, the ascending lifting plate quickly returns to the original position through inertia, a test object and resilience of a first spring, at the moment, the multiple lifting plates are matched to form waves, an anti-seismic test of seismic waves is simulated in sequence, then the jacking block is driven by lifting of a third air cylinder to jack up the lifting plate by different heights, and then the anti-seismic test is completed. Seismic waves of different grades can be simulated, so that the accuracy of test data is improved.

Description

Technical Field

[0001] The invention relates to the technical field of civil engineering seismic test, and in particular to a civil engineering structure seismic test device. Background Art

[0002] The civil engineering structure seismic test device has a wide range of application value in the field of civil engineering. It can not only be used to evaluate the seismic performance of new structures, but also to conduct seismic identification and reinforcement design of existing structures. Through seismic tests, we can have a deeper understanding of the response and damage mechanism of the structure under earthquake action, and provide scientific basis and technical support for structural seismic design. At the same time, seismic tests are also one of the important means to promote the progress and innovation of civil engineering seismic technology.

[0003] For example, the invention disclosed in the publication number CN118482884A discloses a seismic test device for civil engineering structures, including a support mechanism, a first bearing platform, a second bearing platform, a test platform and a bottom plate, wherein the support mechanism is fixedly mounted on the bottom plate, the support mechanism is fixedly connected to the first bearing platform, a plurality of motors are fixedly mounted on the side of the first bearing platform, a connecting platform is fixedly arranged on the upper surface of the first bearing platform, an elastic member is arranged above the connecting platform, a plurality of spherical bearing shells are fixedly mounted at the top corners of the bottom of the second bearing platform, the bottoms of the plurality of spherical bearing shells are fixedly connected to the support mechanism, a test platform is fixedly arranged on the top surface of the second bearing platform, a stabilizing mechanism is arranged on both sides of the test platform, a semi-circular bearing shell is fixedly arranged on the bottom of the second bearing platform, and a rotating mechanism is arranged on the other side of the semi-circular bearing shell. When simulating earthquake waves, the invention simulates from multiple directions, and can also perform seismic tests normally when the sample is heavy, and support the upper sample.

[0004] In the above-mentioned prior art, the staff clamps the test object through the cylinder and starts the motor to drive the crank structure to rotate. The crank structure drives the pancake-shaped component to reciprocate up and down to hit the test bench, causing the test bench to vibrate, thereby simulating an earthquake. However, when an earthquake occurs, seismic waves are generated. Strong seismic waves cause the ground to crack and fluctuate up and down, and will cause great damage to the building. However, it is difficult to simulate seismic waves in the above-mentioned technology, which leads to deviations in the test data. Summary of the invention

[0005] The purpose of the present invention is to solve the problem in the prior art that when an earthquake occurs, seismic waves are generated. Strong seismic waves cause the ground to crack and fluctuate up and down, and cause great damage to buildings. However, it is difficult to simulate seismic waves in the above-mentioned technology, thus resulting in deviations in the test data.

[0006] In order to achieve the above-mentioned objectives, the present invention adopts the following technical scheme: a civil engineering structure seismic test device, comprising a supporting base, a test bench is arranged at the top of the supporting base, first limit grooves are arranged equidistantly on both sides of the top of the test bench, and protrusions are arranged equidistantly and fixedly connected on both sides of the bottom of the test bench, and the protrusions on both sides are staggered, a simulation component is arranged at the top of the test bench, a vibration structure is arranged on both sides of the top of the supporting base, and an experimental driving component is arranged in the middle of the top of the supporting base, the simulation component includes a plurality of lifting plates and a connected limit assembly, the lifting plates are arranged equidistantly at the top of the test bench, and first limit columns are fixedly connected on both sides of the bottom end of each lifting plate, the first limit column is slidably connected to the first limit groove, a first spring is fixedly connected to the inside of the first limit column, and the bottom end of the first spring is fixedly connected to the test bench.

[0007] As a preferred embodiment, the connected limiting assembly includes a fixed seat, the fixed seat is fixed at two sides of the top of the lifting plate at an interval, and the sides of the fixed seats close to each other are fixedly connected with a first cylinder and a first telescopic rod, the first cylinder and the first telescopic rod are arranged at an interval, and the ends of the first cylinder and the first telescopic rod close to each other are fixedly connected with a main clamping plate, the bottom end of the main clamping plate is slidably connected to the lifting plate, the two sides of the top of the main clamping plate are fixedly connected with a synchronization rod, the two sides of the synchronization rod are slidably connected with a secondary clamping plate, and a slide groove is provided in the middle of the secondary clamping plate, and the slide groove is slidably connected with the synchronization rod. The staff places the test object in the middle of the top of the lifting plate and starts the first cylinder. The first cylinder synchronously pushes the main clamping plate to clamp and fix the bottom end of the object. Since the synchronization rods are provided on both sides of the top of the main clamping plate, the secondary clamping plate can be driven to move by the synchronization rod when the main clamping plate moves, so that the main clamping plate and the secondary clamping plate fix the test object at the same time, and at this time, the first telescopic rod is gradually stretched and supports the main clamping plate connected thereto.

[0008] As a preferred embodiment, the experimental driving assembly includes a connecting frame, which is fixed on both sides of the experimental table, and a second limiting column is fixedly connected to the middle of the connecting frame, and a lifting seat is slidably connected to the side where the second limiting columns are close to each other, and a third cylinder is fixedly connected to the middle of the bottom end of the lifting seat, and the bottom end of the third cylinder is fixedly connected to the supporting base. The lifting and lowering of the third cylinder drives the top block to lift the lifting plate to different heights, which can simulate seismic waves of different levels, thereby improving the accuracy of the test data, and when the lifting plate fluctuates, it will drive the main clamping plate, the auxiliary clamping plate and the object at the top to rise. Since the main clamping plate and the auxiliary clamping plate are in close contact with the object, during the rising process of the main clamping plate and the auxiliary clamping plate, the synchronization rod can drive the auxiliary clamping plate to rise slightly while sliding in the slide groove, so that the simulation can be more realistic.

[0009] As a preferred embodiment, a reciprocating screw is rotatably connected to the middle part of the top of the lifting seat, and a moving slider is threadedly connected to the middle part of the reciprocating screw, and the bottom end of the moving slider is slidably connected to the lifting seat, and the top of the moving slider is fixedly connected to a top block, and the top block is slidably connected to the lifting plate. During the test, the motor is started to drive the rotating shaft to rotate, and the reciprocating screw drives the moving slider to move back and forth, so that the top block moves to squeeze the lifting plate. Since several lifting plates are arranged, the lifting plates are squeezed by the top block in turn and rise. When the top block is separated from one lifting plate, the rising lifting plate quickly returns to its original position through inertia, the test object and the rebound of the first spring. At this time, several lifting plates cooperate to form waves, which simulate the seismic resistance test of earthquake waves in turn.

[0010] As a preferred embodiment, the reciprocating screw rod is fixedly connected to a fourth gear at one end away from the top block, the lifting seat is rotatably connected to a second telescopic rod at the middle part of one end close to the fourth gear, the bottom end of the second telescopic rod is fixedly connected to a supporting base, both ends of the second telescopic rod are fixedly connected to a third gear, the third gear at the top is meshed with the fourth gear, the second cylinder is started, the second cylinder pushes the second gear to mesh with the third gear, the second gear drives the third gear to rotate, the third gear drives the fourth gear to rotate, and the fourth gear drives the reciprocating screw rod to rotate.

[0011] As a preferred embodiment, the vibration structure includes a vibration component and a first driving component, the first driving component includes a motor, the motor is fixed to one side of the top of the supporting base, one side of the motor is connected to a rotating shaft in a transmission manner, the middle of the rotating shaft is fixedly connected to a second rotating wheel, the middle of the second rotating wheel is connected to a belt in a transmission manner, the end of the rotating shaft away from the motor is flange-connected to a second cylinder, the end of the second cylinder away from the motor is fixedly connected to a second gear, the second gear is meshed with a third gear, and when the connecting block moves, the anti-reversal limit rod slides along the track of the second limit groove, Therefore, when the knocking rod strikes, the anti-reverse limit rod can limit the knocking rod to prevent the knocking rod from tilting backwards due to the knocking force. Secondly, the lifting block is driven by the lifting of the third cylinder to lift the lifting plate to different heights, which can simulate different levels of seismic waves, thereby improving the accuracy of the test data. When the lifting plate fluctuates, the main clamping plate, the auxiliary clamping plate and the object at the top will be driven to rise. Since the main clamping plate and the auxiliary clamping plate are in close contact with the object, during the rising process of the main clamping plate and the auxiliary clamping plate, the synchronous rod can drive the auxiliary clamping plate to rise slightly while sliding in the slide groove, so that the simulation can be more realistic.

[0012] As a preferred embodiment, the vibration assembly includes a motor, and the motors are equidistantly arranged and fixedly connected to both sides of the top of the support base. A first gear is provided in the middle of the top of the motor, and a connecting shaft is fixedly connected to the middle of the first gear. The connecting shaft is rotatably connected to the support frame, and one connecting shaft passes through the support frame, and the ends located on the outside are fixed to each other. The end of the connecting shaft located on the outside of the support frame is fixedly connected to a first rotating wheel, and the first rotating wheel is connected to a belt transmission. The starting motor drives the rotating shaft to rotate, the rotating shaft drives the belt to rotate, the belt drives the first rotating wheel to rotate, the first rotating wheel drives the connecting shaft to rotate, and the connecting shaft drives the first gear to rotate, and the chain rotates at this time.

[0013] As a preferred embodiment, a chain is meshed on the outer side of the first gear, connecting blocks are equidistantly arranged and fixedly connected to the outer side of the chain, a knocking rod is fixedly connected to the side of the connecting block away from the chain, and the knocking rod is slidably connected to the protrusion.

[0014] As a preferred embodiment, anti-backward limit rods are fixedly connected on both sides of the connecting block, a limit ring is arranged on the side of the anti-backward limit rod away from the connecting block, the limit ring is fixedly connected to the support frame on the side away from the connecting block, a second limit groove is opened in the middle of the limit ring, and the second limit groove is slidably connected to the anti-backward limit rod. Since multiple connecting blocks are arranged on the outside of the chains on both sides and the positions of the connecting blocks are irregular, the frequency of the knocking rod hitting the protrusion when it moves is also irregular, so it can truly simulate the vibration during an earthquake, so that the test is more realistic.

[0015] As a preferred embodiment, a first connecting head is fixedly connected to the middle of the top ends of both sides of the support base, a second connecting head is rotatably connected to the top end of the first connecting head, the second connecting head is fixedly connected to the experimental bench, the support base is located on both sides of the first connecting head and is fixedly connected to a first connecting seat, a spring tube is rotatably connected to the middle of the first connecting seat, an end of the spring tube away from the first connecting seat is rotatably connected to the second connecting seat, the second connecting seat is fixedly connected to the experimental bench, and when the experimental bench is vibrated, it will shake toward both sides of the second connecting seat, causing the second connecting head to shake, and the force generated by the shaking will squeeze the second connecting seat, the second connecting seat will squeeze the spring tube, the spring tube will squeeze the first connecting seat, and the spring tube will rebound back and forth, causing the bump to shake irregularly, thereby simulating an earthquake.

[0016] The beneficial effects of the present invention are as follows:

[0017] 1. In the present invention, the starting motor drives the knocking rod to rotate, the knocking rod drives the second gear to rotate, the second gear drives the third gear to rotate, the third gear drives the fourth gear to rotate, the fourth gear drives the reciprocating screw to rotate, the reciprocating screw drives the moving slider to move back and forth, so that the top block moves to squeeze the lifting plate. Since a number of lifting plates are provided, the lifting plates are squeezed by the top blocks in turn and rise. When the top block is separated from a lifting plate, the rising lifting plate quickly returns to its original position through inertia, the test object and the rebound of the first spring. At this time, a number of lifting plates cooperate to form waves, which simulate the seismic test of earthquake waves in turn. Secondly, the lifting and lowering of the third cylinder drives the top block to lift the lifting plate to different heights, which can simulate earthquake waves of different levels, thereby improving the accuracy of the test data.

[0018] 2. In the present invention, the test object is placed in the middle of the top of the lifting plate, and the first cylinder is started. The first cylinder synchronously pushes the main clamping plate to clamp and fix the bottom end of the object. Since synchronization rods are provided on both sides of the top of the main clamping plate, the synchronization rods can drive the auxiliary clamping plate to move when the main clamping plate moves, so that the main clamping plate and the auxiliary clamping plate fix the test object at the same time. At this time, the first telescopic rod is gradually stretched and supports the main clamping plate connected to it. When the lifting plate fluctuates, the main clamping plate, the auxiliary clamping plate and the object at the top will be driven to rise. Since the main clamping plate and the auxiliary clamping plate are in close contact with the object, during the rising process of the main clamping plate and the auxiliary clamping plate, the synchronization rod slides in the slide groove and can drive the auxiliary clamping plate to rise slightly, so that the simulation can be more realistic.

[0019] 3. In the present invention, the starting motor drives the rotating shaft to rotate, the rotating shaft drives the belt to rotate, the belt drives the first rotating wheel to rotate, the first rotating wheel drives the connecting shaft to rotate, and the connecting shaft drives the first gear to rotate. At this time, the chain rotates. Since multiple connecting blocks are arranged on the outside of the chains on both sides, and the positions of the connecting blocks are irregular, the frequency of the knocking rod hitting the protrusion when it moves is also irregular. Therefore, the vibration during an earthquake can be truly simulated, so that the test is more realistic. Secondly, when the connecting block moves, the anti-reverse limit rod slides along the track of the second limit groove. Therefore, when the knocking rod knocks, the anti-reverse limit rod can limit the knocking rod to prevent the knocking rod from tilting backwards due to the knocking force. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic structural diagram of a civil engineering structure seismic test device provided by the present invention;

[0021] Figure 2 A schematic cross-sectional structure diagram of a civil engineering structure seismic test device provided by the present invention;

[0022] Figure 3 A schematic diagram of the structure of a simulation component of a civil engineering structure seismic test device provided by the present invention;

[0023] Figure 4 A schematic diagram of the structure of a connected limiting assembly of a civil engineering structure seismic test device provided by the present invention;

[0024] Figure 5 A schematic diagram of the structure of an experimental drive assembly of a civil engineering structure seismic test device provided by the present invention;

[0025] Figure 6 A schematic diagram showing the structure of an experimental drive component of a civil engineering structure seismic test device provided by the present invention;

[0026] Figure 7 A schematic diagram of a vibration structure of a civil engineering structure seismic test device provided by the present invention;

[0027] Figure 8 A schematic diagram of the structure of a vibration component of a civil engineering structure seismic test device provided by the present invention;

[0028] Fig. 9 A schematic diagram of the explosion structure of a vibration assembly of a civil engineering structure seismic test device provided by the present invention;

[0029] Legend:

[0030] 1. Support base; 11. First connector; 12. Second connector; 13. First connector seat; 14. Spring tube; 15. Second connector seat; 2. Experimental table; 21. Bump; 22. First limit slot; 31. Lifting plate; 311. First limit column; 312. First spring; 32. Fixed seat; 321. First cylinder; 322. Main clamping plate; 3221. Synchronous rod; 323. First telescopic rod; 324. Secondary clamping plate; 3241. Slide; 41. Support frame; 411. First gear; 4111. Connecting shaft; 41 12. first rotating wheel; 412. chain; 413. connecting block; 414. knocking rod; 415. anti-reversing limit rod; 416. limit ring; 417. second limit groove; 42. motor; 421. rotating shaft; 422. second rotating wheel; 423. belt; 424. second cylinder; 425. second gear; 51. connecting frame; 52. second limit column; 53. lifting seat; 54. third cylinder; 55. moving slider; 56. top block; 57. second telescopic rod; 58. third gear; 59. reciprocating screw rod; 510. fourth gear. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] See also Figure 1 - Fig. 9 The present invention provides a technical solution: a seismic test device for a civil engineering structure, comprising a supporting base 1, a test bench 2 is arranged at the top of the supporting base 1, first limiting grooves 22 are arranged equidistantly on both sides of the top of the test bench 2, and protrusions 21 are arranged equidistantly and fixedly connected on both sides of the bottom of the test bench 2, and the protrusions 21 on both sides are arranged staggered, a simulation component is arranged at the top of the test bench 2, a vibration structure is arranged on both sides of the top of the supporting base 1, and an experimental driving component is arranged in the middle of the top of the supporting base 1. The simulation component includes a plurality of lifting plates 31 and a connected limiting component, and the lifting plates 31 are arranged equidistantly at the top of the test bench 2, and first limiting columns 311 are fixedly connected on both sides of the bottom end of each lifting plate 31, and the first limiting columns 311 are slidably connected to the first limiting grooves 22, and a first spring 312 is fixedly connected to the inside of the first limiting column 311, and the bottom end of the first spring 312 is fixedly connected to the test bench 2.

[0033] like Figure 1 - Fig. 9As shown, the one-piece limiting assembly includes a fixed seat 32, the fixed seat 32 is fixed at intervals on both sides of the top of the lifting plate 31, and the sides of the fixed seats 32 that are close to each other are fixedly connected with the first cylinder 321 and the first telescopic rod 323, the first cylinder 321 and the first telescopic rod 323 are arranged at intervals, and the ends of the first cylinder 321 and the first telescopic rod 323 that are close to each other are fixedly connected with the main clamping plate 322, the bottom end of the main clamping plate 322 is slidably connected to the lifting plate 31, the two sides of the top of the main clamping plate 322 are fixedly connected with synchronization rods 3221, and the two sides of the synchronization rod 3221 are slidably connected with auxiliary clamping plates 324, the middle part of the auxiliary clamping plate 324 is provided with a sliding groove 3241, and the sliding groove 3241 is slidably connected with the synchronization rod 3221, and the experimental driving assembly includes a connecting frame 51, the connecting frame 51 is fixed on both sides of the experimental table 2, and the middle part of the connecting frame 51 is fixedly connected with a second limiting column 52, a lifting seat 53 is slidably connected to the side where the second limiting columns 52 are close to each other, and a third cylinder 54 is fixedly connected to the middle of the bottom end of the lifting seat 53, and the bottom end of the third cylinder 54 is fixedly connected to the support base 1, and a reciprocating screw rod 59 is rotatably connected to the middle of the top end of the lifting seat 53, and a moving slider 55 is threadedly connected to the middle of the reciprocating screw rod 59, and the bottom end of the moving slider 55 is slidably connected to the lifting seat 53, and a top block 56 is fixedly connected to the top block 56, and the top block 56 is slidably connected to the lifting plate 31, and the end of the reciprocating screw rod 59 away from the top block 56 is fixedly connected to the fourth gear 510, and the middle part of the lifting seat 53 close to the fourth gear 510 is rotatably connected to the second telescopic rod 57, and the bottom end of the second telescopic rod 57 is fixedly connected to the support base 1, and both ends of the second telescopic rod 57 are fixedly connected to the third gear 58, and the third gear 58 at the top is meshed with the fourth gear 510.

[0034] In this embodiment, the staff places the test object in the middle of the top of the lifting plate 31 and starts the first cylinder 321. The first cylinder 321 synchronously pushes the main clamping plate 322 to clamp and fix the bottom end of the object. Since the two sides of the top of the main clamping plate 322 are provided with synchronization rods 3221, when the main clamping plate 322 moves, the synchronization rods 3221 can drive the auxiliary clamping plate 324 to move, so that the main clamping plate 322 and the auxiliary clamping plate 324 fix the test object at the same time. At this time, the first telescopic rod 32 3 is gradually stretched and supports the main clamping plate 322 connected thereto. During the test, the motor 42 is started to drive the rotating shaft 421 to rotate, and the second cylinder 424 is started. The second cylinder 424 pushes the second gear 425 to engage with the third gear 58. The second gear 425 drives the third gear 58 to rotate, and the third gear 58 drives the fourth gear 510 to rotate. The fourth gear 510 drives the reciprocating screw rod 59 to rotate, and the reciprocating screw rod 59 drives the moving slider 55 to reciprocate, so that the top block 56 moves to lift The descending plate 31 is squeezed. Since several lifting plates 31 are provided, the lifting plates 31 are squeezed by the top block 56 in turn and rise. When the top block 56 is separated from one lifting plate 31, the rising lifting plate 31 returns to its original position quickly through inertia, the test object and the rebound of the first spring 312. At this time, several lifting plates 31 cooperate to form waves, which simulate the seismic test of earthquake waves in turn. Secondly, the lifting and lowering of the third cylinder 54 drives the top block 56 to lift the lifting plate 31 to different heights, which can simulate earthquake waves of different levels, thereby improving the accuracy of the test data. When the lifting plate 31 fluctuates, the main clamping plate 322, the auxiliary clamping plate 324 and the object at the top are driven to rise. Since the main clamping plate 322 and the auxiliary clamping plate 324 are in close contact with the object, during the rising process of the main clamping plate 322 and the auxiliary clamping plate 324, the synchronous rod 3221 can drive the auxiliary clamping plate 324 to rise slightly while sliding in the slide groove 3241, so that the simulation can be more realistic.

[0035] like Figure 1 - Fig. 9As shown, the vibration structure includes a vibration component and a first drive component, the first drive component includes a motor 42, the motor 42 is fixed to one side of the top of the support base 1, one side of the motor 42 is connected to a rotating shaft 421, the middle of the rotating shaft 421 is fixedly connected to a second rotating wheel 422, the middle of the second rotating wheel 422 is connected to a belt 423, the end of the rotating shaft 421 away from the motor 42 is flange-connected to a second cylinder 424, the end of the second cylinder 424 away from the motor 42 is fixedly connected to a second gear 425, the second gear 425 is meshed with a third gear 58, the vibration component includes a motor 42, the motor 42 is equidistantly arranged and fixedly connected to both sides of the top of the support base 1, a first gear 411 is provided in the middle of the top of the motor 42, the middle of the first gear 411 is fixedly connected to a connecting shaft 4111, the connecting shaft 4111 is rotatably connected to the support frame 41, a connecting shaft 4111 passes through the support frame 41, and one end located on the outside is fixed to each other, one end of the connecting shaft 4111 located on the outside of the support frame 41 is fixedly connected to the first rotating wheel 4112, and the first rotating wheel 4112 is transmission-connected to the belt 423, a chain 412 is meshed on the outer side of the first gear 411, and connecting blocks 413 are fixedly connected to the outer side of the chain 412 at equal intervals, and a knocking rod 414 is fixedly connected to the side of the connecting block 413 away from the chain 412, and the knocking rod 414 is slidably connected to the protrusion 21, and anti-reversal limit rods 415 are fixedly connected to both sides of the connecting block 413, and a limiting ring 416 is provided on the side of the anti-reversal limit rod 415 away from the connecting block 413, and the side of the limiting ring 416 away from the connecting block 413 is fixedly connected to the support frame 41, and a second limiting groove 417 is provided in the middle of the limiting ring 416, and the second limiting groove 417 is slidably connected to the anti-reversal limit rod 415.

[0036] In this embodiment, the starting motor 42 drives the rotating shaft 421 to rotate, the rotating shaft 421 drives the belt 423 to rotate, the belt 423 drives the first rotating wheel 4112 to rotate, the first rotating wheel 4112 drives the connecting shaft 4111 to rotate, and the connecting shaft 4111 drives the first gear 411 to rotate. At this time, the chain 412 rotates. Since a plurality of connecting blocks 413 are arranged on the outer sides of the chains 412 on both sides, and the positions of the connecting blocks 413 are irregular, the frequency of the knocking rod 414 hitting the protrusion 21 when it moves is also irregular, so the vibration during an earthquake can be truly simulated, so that the test is more realistic. Secondly, when the connecting block 413 moves, the anti-reversal limit rod 415 slides along the trajectory of the second limit groove 417, so when the knocking rod 4 When the knocking rod 14 is struck, the anti-falling limit rod 415 can limit the knocking rod 414 to prevent the knocking rod 414 from tilting backwards due to the knocking force. Secondly, the lifting and lowering of the third cylinder 54 drives the top block 56 to lift the lifting plate 31 to different heights, which can simulate earthquake waves of different levels, thereby improving the accuracy of the test data. When the lifting plate 31 fluctuates, the main clamping plate 322, the auxiliary clamping plate 324 and the object at the top will be driven to rise. Since the main clamping plate 322 and the auxiliary clamping plate 324 are in close contact with the object, during the rising process of the main clamping plate 322 and the auxiliary clamping plate 324, the synchronous rod 3221 can drive the auxiliary clamping plate 324 to rise slightly while sliding in the slide groove 3241, so that the simulation can be more realistic.

[0037] like Figure 1 - Fig. 9 As shown, a first connecting head 11 is fixedly connected to the middle of the top of both sides of the support base 1, a second connecting head 12 is rotatably connected to the top of the first connecting head 11, the second connecting head 12 is fixedly connected to the experimental table 2, and a first connecting seat 13 is fixedly connected to the two sides of the support base 1 located on the first connecting head 11, a spring tube 14 is rotatably connected to the middle of the first connecting seat 13, and a second connecting seat 15 is rotatably connected to one end of the spring tube 14 away from the first connecting seat 13, and the second connecting seat 15 is fixedly connected to the experimental table 2.

[0038] In this embodiment, after being vibrated, the experimental table 2 will rock to both sides of the second connecting seat 15, causing the second connecting head 12 to rock, and the force generated by the rocking will squeeze the second connecting seat 15, the second connecting seat 15 will squeeze the spring tube 14, and the spring tube 14 will squeeze the first connecting seat 13, and the spring tube 14 will rebound back and forth, causing the protrusion 21 to rock irregularly, thereby simulating an earthquake.

[0039] Working principle: First, the staff places the test object in the middle of the top of the lifting plate 31 and starts the first cylinder 321. The first cylinder 321 synchronously pushes the main clamping plate 322 to clamp and fix the bottom end of the object. Since the synchronization rods 3221 are arranged on both sides of the top of the main clamping plate 322, the main clamping plate 322 can be moved by the synchronization rod 3221 to drive the auxiliary clamping plate 324 to move, so that the main clamping plate 322 and the auxiliary clamping plate 324 can fix the test object at the same time. At this time, the first telescopic rod 323 is gradually stretched and supports the main clamping plate 322 connected thereto. During the test, the motor 42 is started to drive the rotating shaft 421 to rotate, and the rotating shaft 421 drives the belt 423 to rotate. 423 drives the first rotating wheel 4112 to rotate, the first rotating wheel 4112 drives the connecting shaft 4111 to rotate, and the connecting shaft 4111 drives the first gear 411 to rotate. At this time, the chain 412 rotates. Since multiple connecting blocks 413 are arranged on the outer sides of the chains 412 on both sides, and the positions of the connecting blocks 413 are irregular, the frequency of the knocking rod 414 hitting the protrusion 21 when it moves is also irregular. Therefore, the vibration during an earthquake can be truly simulated, so that the test is more realistic. Secondly, when the connecting block 413 moves, the anti-reversal limit rod 415 slides along the trajectory of the second limit groove 417. Therefore, when the knocking rod 414 knocks, the anti-reversal limit rod 415 can limit the knocking rod 414 to avoid knocking. The rod 414 is struck and tilted backward. When the seismic wave experiment is carried out, the second cylinder 424 is started, and the second cylinder 424 pushes the second gear 425 to mesh with the third gear 58. The rotation of the third gear 58 drives the fourth gear 510 to rotate, and the fourth gear 510 drives the reciprocating screw rod 59 to rotate. The reciprocating screw rod 59 drives the moving slider 55 to move back and forth, so that the top block 56 moves to press the lifting plate 31. Since a plurality of lifting plates 31 are provided, the lifting plates 31 are pressed by the top block 56 in turn and rise. When the top block 56 separates from one lifting plate 31, the rising lifting plate 31 is quickly returned to the original position by inertia, the test object and the rebound of the first spring 312. At the original place, several lifting plates 31 cooperate to form waves, simulating the seismic test of earthquake waves in turn, and secondly, the lifting and lowering of the third cylinder 54 drives the top block 56 to lift the lifting plate 31 to different heights, which can simulate earthquake waves of different levels, thereby improving the accuracy of the test data. When the lifting plate 31 fluctuates, the main clamping plate 322, the auxiliary clamping plate 324 and the object at the top will be driven to rise. Since the main clamping plate 322 and the auxiliary clamping plate 324 are in close contact with the object, during the rising process of the main clamping plate 322 and the auxiliary clamping plate 324, the synchronous rod 3221 can drive the auxiliary clamping plate 324 to rise slightly while sliding in the slide groove 3241, so that the simulation can be more realistic.

[0040] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A civil engineering structure seismic test device, comprising a support base (1), characterized in that: A test bench (2) is arranged at the top of the support base (1), first limiting grooves (22) are arranged equidistantly on both sides of the top of the test bench (2), convex blocks (21) are arranged equidistantly and fixedly connected on both sides of the bottom of the test bench (2), and the convex blocks (21) on both sides are arranged in a staggered manner, a simulation component is arranged at the top of the test bench (2), a vibration structure is arranged at both sides of the top of the support base (1), and an experimental driving component is arranged in the middle of the top of the support base (1), and the simulation component includes a plurality of lifting plates (31) and a conjoined limiting component, the lifting plates (31) are arranged equidistantly on the top of the test bench (2), and first limiting columns (311) are fixedly connected on both sides of the bottom of each lifting plate (31), the first limiting columns (311) are slidably connected to the first limiting grooves (22), a first spring (312) is fixedly connected inside the first limiting columns (311), and the bottom end of the first spring (312) is fixedly connected to the test bench (2).

2. A civil engineering structure seismic test device according to claim 1, characterized in that: The one-piece limiting assembly comprises a fixed seat (32), the fixed seat (32) is fixed at intervals on both sides of the top of the lifting plate (31), the side of the fixed seat (32) close to each other is fixedly connected with a first cylinder (321) and a first telescopic rod (323), the first cylinder (321) and the first telescopic rod (323) are arranged at intervals, the ends of the first cylinder (321) and the first telescopic rod (323) close to each other are fixedly connected with a main clamping plate (322), the bottom end of the main clamping plate (322) is slidably connected to the lifting plate (31), the two sides of the top of the main clamping plate (322) are fixedly connected with synchronization rods (3221), the two sides of the synchronization rod (3221) are slidably connected with auxiliary clamping plates (324), the middle part of the auxiliary clamping plate (324) is provided with a sliding groove (3241), and the sliding groove (3241) is slidably connected to the synchronization rod (3221).

3. A civil engineering structure seismic test device according to claim 1, characterized in that: The experimental drive assembly comprises a connecting frame (51), the connecting frame (51) is fixed on both sides of the experimental table (2), a second limiting column (52) is fixedly connected to the middle of the connecting frame (51), a lifting seat (53) is slidably connected to the side of the second limiting column (52) close to each other, a third cylinder (54) is fixedly connected to the middle of the bottom end of the lifting seat (53), and the bottom end of the third cylinder (54) is fixedly connected to the support base (1).

4. A civil engineering structure seismic test device according to claim 3, characterized in that: A reciprocating screw rod (59) is rotatably connected to the middle of the top of the lifting seat (53), a movable slider (55) is threadedly connected to the middle of the reciprocating screw rod (59), a bottom end of the movable slider (55) is slidably connected to the lifting seat (53), a top block (56) is fixedly connected to the top of the movable slider (55), and the top block (56) is slidably connected to the lifting plate (31).

5. A civil engineering structure seismic test device according to claim 4, characterized in that: The end of the reciprocating screw rod (59) away from the top block (56) is fixedly connected to the fourth gear (510), and the middle part of the lifting seat (53) close to the fourth gear (510) is rotatably connected to the second telescopic rod (57), the bottom end of the second telescopic rod (57) is fixedly connected to the support base (1), and the two ends of the second telescopic rod (57) are fixedly connected to the third gear (58), and the third gear (58) at the top is meshed with the fourth gear (510).

6. A civil engineering structure seismic test device according to claim 1, characterized in that: The vibration structure comprises a vibration component and a first driving component, wherein the first driving component comprises a motor (42), wherein the motor (42) is fixed to one side of the top end of the support base (1), wherein one side of the motor (42) is drivingly connected to a rotating shaft (421), wherein the middle portion of the rotating shaft (421) is fixedly connected to a second rotating wheel (422), wherein the middle portion of the second rotating wheel (422) is drivingly connected to a belt (423), wherein an end of the rotating shaft (421) away from the motor (42) is flange-connected to a second cylinder (424), wherein an end of the second cylinder (424) away from the motor (42) is fixedly connected to a second gear (425), and the second gear (425) is meshed with a third gear (58).

7. A civil engineering structure seismic test device according to claim 6, characterized in that: The vibration assembly comprises a motor (42), the motors (42) are equidistantly arranged and fixedly connected to both sides of the top of the support base (1), a first gear (411) is provided in the middle of the top of the motor (42), a connecting shaft (4111) is fixedly connected to the middle of the first gear (411), the connecting shaft (4111) is rotatably connected to the support frame (41), one of the connecting shafts (4111) passes through the support frame (41), and one end located outside is fixed to each other, one end of the connecting shaft (4111) located outside the support frame (41) is fixedly connected to a first rotating wheel (4112), and the first rotating wheel (4112) is transmission-connected to a belt (423).

8. A civil engineering structure seismic test device according to claim 7, characterized in that: The outer side of the first gear (411) is meshed with a chain (412), the outer side of the chain (412) is fixedly connected with connecting blocks (413) arranged at equal intervals, the side of the connecting block (413) away from the chain (412) is fixedly connected with a knocking rod (414), and the knocking rod (414) is slidably connected to the protrusion (21).

9. A civil engineering structure seismic test device according to claim 8, characterized in that: Anti-reversal limit rods (415) are fixedly connected to both sides of the connecting block (413); a limit ring (416) is provided on the side of the anti-reversal limit rod (415) away from the connecting block (413); the side of the limit ring (416) away from the connecting block (413) is fixedly connected to the support frame (41); a second limit groove (417) is provided in the middle of the limit ring (416); and the second limit groove (417) is slidably connected to the anti-reversal limit rod (415).

10. The civil engineering structure seismic test device according to claim 1, characterized in that: A first connecting head (11) is fixedly connected to the middle of the top ends of both sides of the support base (1), a second connecting head (12) is rotatably connected to the top end of the first connecting head (11), and the second connecting head (12) is fixedly connected to the experimental table (2); the support base (1) is fixedly connected to first connecting seats (13) on both sides of the first connecting head (11), a spring tube (14) is rotatably connected to the middle of the first connecting seat (13), and a second connecting seat (15) is rotatably connected to one end of the spring tube (14) away from the first connecting seat (13), and the second connecting seat (15) is fixedly connected to the experimental table (2).

Images