Shock resistance simulation device for civil engineering test detection

Abstract

The invention relates to the technical field of anti-seismic simulation, in particular to an anti-seismic capacity simulation device for civil engineering test detection, which comprises a pit platform and a top frame arranged in the pit platform, a simulation mechanism used for driving the top frame to shake to simulate an earthquake is arranged in the pit platform, and sliding frames are slidably connected to two ends of the inner side of the top frame. Top plates are slidably connected to the two ends of the inner side of the sliding frame, cylinders are slidably connected to the four corners of the top of each top plate in a penetrating mode, bottom plates are fixedly connected between the bottoms of the cylinders, and reset springs are fixedly connected between the top plates and the bottom plates. The multiple cylinders can be automatically inserted into positioning holes in the steel structure, the limiting block is pulled downwards to extrude and fix the steel structure to the top frame, and therefore automatic locking and fixing of the steel structure are achieved, a detector does not need to tighten multiple nuts through a tool, and the convenient performance of the device is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of earthquake-resistant simulation, and in particular to an earthquake-resistant capability simulation device for civil engineering test and detection. Background Art

[0002] Civil engineering refers to the materials and equipment used, as well as the technical activities such as survey, design, construction, maintenance, and repair carried out. It also refers to the object of engineering construction. In construction, a variety of engineering buildings, components, or equipment are often needed to achieve engineering construction. Current components and construction materials, or devices composed of steel structure materials, all need to undergo certain seismic tests before use to determine whether the structure has achieved the seismic characteristics. Therefore, it is necessary to use test equipment for seismic testing of civil engineering structures.

[0003] A steel structure seismic toughness detection device and detection method with publication number CN118603469A in the prior art can simulate the influence of earthquake longitudinal waves and transverse waves on the steel structure shed by connecting the independent detection unit with the four columns of the steel structure shed, and continuously adjust the direction of the earthquake transverse waves to detect the steel structure shed's bearing strength for transverse waves in different directions. The four independent detection units can set the adjustment speed of the transverse waves to different speeds, so that the four columns of the steel structure shed are subjected to transverse waves in different directions at the same time, and the overall torsional stress tolerance strength of the steel structure shed is detected, making the detection more comprehensive.

[0004] Although the above-mentioned device can carry out comprehensive inspection of steel structures, there are still some defects in the actual inspection process. Since the simulated seismic inspection equipment is connected to the steel structure through multiple bolts, the steel structure needs to be hoisted and inserted into the bolts on the seismic simulation equipment during each test. The alignment process is not only time-consuming and laborious, but also after the steel structure is inserted, the staff needs to use tools to screw in and tighten multiple nuts, which greatly reduces the testing efficiency of the device.

[0005] Therefore, a seismic capacity simulation device for civil engineering test and detection is proposed to solve the above problems. Summary of the invention

[0006] The purpose of the present invention is to solve the shortcomings existing in the background technology and to propose a seismic resistance simulation device for civil engineering test and detection.

[0007] To achieve the above purpose, the technical solution adopted by the present invention is: a seismic capacity simulation device for civil engineering test detection, including a pit platform, and a top frame arranged in the pit platform, the pit platform is provided with a simulation mechanism for driving the top frame to shake to simulate an earthquake, both ends of the inner side of the top frame are slidably connected to sliding frames, both ends of the inner side of the sliding frame are slidably connected to a top plate, the four corners of the top of the top plate are penetrated and slidably connected to cylinders, the bottom of the cylinders are fixedly connected to the bottom, a reset spring is fixedly connected between the top plate and the bottom plate, an extrusion plate is fixedly connected to the middle position of the bottom of the bottom plate, the side wall of the extrusion plate is inclined, the bottom end of the sliding frame away from one side is fixedly connected to an L-shaped plate, and the side wall of the L-shaped plate is fixedly connected to a pair of electric telescopic cylinders; A round rod is provided under the sliding frame, and the output end of each pair of the electric telescopic cylinders is fixedly connected to the side wall of the round rod; a lower plate is longitudinally slidably connected to the inner side of the cylinder, and movable grooves are provided on both sides of the outer wall of the cylinder; a pair of limit blocks are transversely slidably connected to the top of the lower plate and located at the movable groove; the limit blocks are inclined on the side close to each other, and a middle groove is provided in the middle of the top of the limit blocks; a conical block is provided on the limit block, and an upper plate is fixedly connected on both sides of the conical block and located above the middle groove; the bottom of the conical block is fixedly connected to a bottom rod and penetrates the bottom end of the lower plate; a pair of pushing plates are slidably connected to the bottom of the bottom plate, and a pull rope is fixedly connected between the top of the push plate and the bottom of the bottom rod and penetrates the bottom end of the cylinder.

[0008] In the above technical solution, further, a pair of through grooves are opened on the top of the bottom plate, a pair of guide rollers are rotatably connected to the middle of the inner side of the through grooves, the pull ropes all pass between the guide rollers, the push plate is arranged at the end of the inclined surface at the bottom of the extrusion plate, and an upper spring is fixedly connected between the inner side of the cylinder and the top of the conical block.

[0009] In the above technical solution, further, a pair of centering springs are fixedly connected between the limit blocks, and a lower spring is fixedly connected between the bottom of the lower plate and the inner side of the cylinder.

[0010] In the above technical solution, further, a pair of positioning plates for limiting the position of the steel structure are fixedly connected to both sides of the outer wall of the top plate, and rollers are rotatably connected between the positioning plates.

[0011] In the above technical solution, further, guide rods are fixedly connected to both sides of the limit block, and guide grooves are provided inside the movable groove and at positions corresponding to the guide rods.

[0012] In the above technical solution, further, two pairs of fixed plates are fixedly connected on the adjacent sides of the sliding frame, threaded rods are rotatably connected between each pair of the fixed plates, the threads of the threaded rods are arranged in opposite directions, and moving blocks are threadedly connected to the outer walls of the threaded rods, and transverse grooves are opened on the adjacent sides of the sliding frame, and the side walls of the moving blocks are fixedly connected to the side walls of the top plate through the transverse grooves.

[0013] In the above technical solution, further, the threaded rods are all fixedly connected with rotating blocks through the fixing plate, and a groove is provided at the top of the sliding frame and at a position corresponding to the rotating block.

[0014] In the above technical solution, further, screws are threadedly connected on both sides of the top frame, and the side walls of the screws are rotatably connected to the side walls of the sliding frame, and lower grooves are opened on both sides of the top of the pit platform.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention adopts the arrangement of electric telescopic cylinders, cylinders, limit blocks, top plates and other structures. It only needs to accurately hoist the steel structure on the top frame, and then multiple cylinders can be automatically inserted into the positioning holes on the steel structure, and the limit blocks can be pulled downward to squeeze and fix the steel structure on the top frame, thereby realizing automatic locking and fixing of the steel structure. There is no need for inspectors to use tools to tighten multiple nuts, which greatly improves the convenience of the device.

[0016] 2. The present invention can adjust the locking position according to steel structures of different sizes through the arrangement of threaded rods, screws and moving blocks, thereby improving the application range of the device and increasing the flexibility of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the front three-dimensional structure of the detection device of the present invention; Figure 2 It is a schematic diagram of a full-section side three-dimensional structure of the detection device of the present invention; Figure 3 This is a schematic diagram of the top frame of the present invention when viewed from above; Figure 4 It is a schematic diagram of the three-dimensional structure of the top plate and the bottom plate of the present invention; Figure 5 It is a schematic diagram of the overall appearance structure of the sliding frame of the present invention; Figure 6 It is a schematic diagram of the overall appearance structure of the conical block, the limit block and the lower plate of the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the bottom plate of the present invention from top view; Figure 8 The appended Figure 7 A schematic diagram of the partially enlarged structure at center A; Fig. 9 It is a schematic diagram of the full cutaway three-dimensional structure of the front side of the cylinder of the present invention; Fig.10 It is a schematic diagram of the partial appearance structure of the steel structure of the present invention during installation.

[0018] In the figure: 1. pit platform; 2. top frame; 3. simulation mechanism; 4. sliding frame; 5. top plate; 6. cylinder; 7. bottom plate; 8. reset spring; 9. extrusion plate; 10. L-shaped plate; 11. electric telescopic cylinder; 12. round rod; 13. lower plate; 14. limit block; 15. middle groove; 16. conical block; 17. upper plate; 18. bottom rod; 19. push plate; 20. pull rope; 21. through groove; 22. guide roller; 23. upper spring; 24. middle spring; 25. lower spring; 26. positioning plate; 27. roller; 28. guide rod; 29. ​​guide groove; 30. fixed plate; 31. threaded rod; 32. rotating block; 33. moving block; 34. groove; 35. screw; 36. lower groove; 37. horizontal groove; 38. moving groove. DETAILED DESCRIPTION

[0019] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0021] like Figure 1-10 The device for simulating earthquake resistance for testing and detecting civil engineering shown in the figure comprises a pit platform 1 and a top frame 2 arranged in the pit platform 1, and a shaking gap is left between the top frame 2 and the pit platform 1 to avoid affecting the normal shaking of the top frame 2. A simulation mechanism 3 for driving the top frame 2 to shake and simulate earthquakes is arranged in the pit platform 1. The simulation mechanism 3 is mainly composed of a longitudinal shaking component and a transverse shaking component, and the top frame 2 is supported on the pit platform 1 by multiple groups of springs, which can realize four-way shaking of the steel structure and realize the earthquake resistance detection of the steel structure. The mature technology in the prior art will not be described in detail here. Both ends of the inner side of the top frame 2 are slidably connected to the sliding frame 4, and both ends of the inner side of the sliding frame 4 are slidably connected to the top plate 5. The four corners of the top of the top plate 5 are penetrated and slidably connected with a cylinder 6, and the bottom of the cylinder 6 is fixedly connected with a bottom plate 7. A return spring 8 is fixedly connected between the top plate 5 and the bottom plate 7. The middle position of the bottom of the bottom plate 7 is fixedly connected to an extrusion plate 9. The side wall of the extrusion plate 9 is inclined. The bottom end of the sliding frame 4 is fixedly connected to an L-shaped plate 10 away from the side, and the side wall of the L-shaped plate 10 is fixedly connected to a pair of electric telescopic cylinders 11; A round rod 12 is provided below the sliding frame 4, and the output ends of each pair of electric telescopic cylinders 11 are fixedly connected to the side walls of the round rod 12. A lower plate 13 is longitudinally slidably connected to the inner side of the cylinder 6, and movable grooves 38 are provided on both sides of the outer wall of the cylinder 6. A pair of limit blocks 14 are slidably connected to the top of the lower plate 13 and located at the movable groove 38, and the limit blocks 14 are tilted on the sides close to each other, and a middle groove 15 is provided in the middle of the top of the limit block 14. A conical block 16 is provided on the limit block 14, and an upper plate 17 is fixedly connected to both sides of the conical block 16 and located above the middle groove 15. The bottom of the conical block 16 is fixedly connected to a bottom rod 18 and is set through the bottom end of the lower plate 13. A pair of push plates 19 are slidably connected to the bottom of the bottom plate 7, and a pull rope 20 is fixedly connected between the top of the push plate 19 and the bottom of the bottom rod 18 and is set through the bottom end of the cylinder 6; A pair of through grooves 21 are provided on the top of the bottom plate 7, and a pair of guide rollers 22 are rotatably connected to the middle of the inner side of the through grooves 21. The pull ropes 20 all pass through the guide rollers 22. The setting of the guide rollers 22 can guide the sliding of the pull ropes 20. The push plate 19 is set at the end of the bottom inclined surface of the extrusion plate 9. An upper spring 23 is fixedly connected between the inner side of the cylinder 6 and the top of the conical block 16. The setting of the upper spring 23 facilitates the round rod 12 to release the extrusion of the push plate 19 and quickly pull the conical block 16 to reset. A pair of center springs 24 are fixedly connected between the limit blocks 14. Through the setting of the center springs 24, the limit blocks 14 can be pulled to move to the side close to each other when resetting, so as to quickly reset. A lower spring 25 is fixedly connected between the bottom of the lower plate 13 and the inner side of the cylinder 6. Through the setting of the lower springs 25, when resetting, the lower plate 13 can be pushed upward to reset. During the seismic test of the steel structure, the assembled steel structure is firstly hoisted onto the top frame 2 by means of a crane, and then the electric telescopic cylinder 11 is controlled to start pulling the round rod 12 to move to both sides, and then the inclined surface of the extrusion plate 9 is pushed through the outer wall of the round rod 12. Since the bottom plate 7 is restricted by the cylinder 6 and can only slide up and down, the extrusion plate 9 and the bottom plate 7 are caused to slide upward, and at the same time, the four cylinders 6 are driven to slide upward, and the reset spring 8 is gradually compressed, so that the cylinder 6 passes through the hole on the steel structure mounting plate, and then when the round rod 12 slides out from the inclined surface of the extrusion plate 9, the upward extrusion of the bottom plate 7 is released; The round rod 12 slides to the bottom of the extrusion plate 9 to keep squeezing the bottom plate 7. At the same time, the round rod 12 moves to the side of the push plate 19, and then pushes the push plate 19 to move, thereby driving the two pull ropes 20 to move, and then under the guidance of the guide roller 22, the bottom rod 18 in the cylinder 6 is pulled downward by the pull rope 20, and at the same time drives the conical block 16 to slide downward, and gradually stretches the upper spring 23, so that the inclined surface of the conical block 16 squeezes the limit block 14 to slide to both sides (at this time, the limit block 14 is restricted by the guide rod 28 and the guide groove 29 and cannot slide downward), so that the limit block 14 extends out of the moving groove 38, and stretches the middle spring 24, and at the same time drives the guide rod 28 to slide out of the guide groove 29, thereby releasing the limit The sliding of the block 14 is restricted. At the same time, the upper plates 17 on both sides of the conical block 16 slide to the bottom of the middle groove 15, and then the conical block 16 is pulled downward by the pull rope 20, which will push the limit block 14 and the lower plate 13 to move downward, and gradually compress the lower spring 25, thereby driving the limit block 14 to move downward, so that the limit block 14 is squeezed on the top of the steel structure mounting plate, and then the steel structure mounting plate is locked between the limit block 14 and the top plate 5, thereby realizing automatic locking of the steel structure, and then the simulation mechanism 3 can be controlled to start the seismic detection of the steel structure. Finally, after the detection is completed, the electric telescopic cylinder 11 is controlled to move in the reverse direction, so as to repeat the above operation in the reverse direction for resetting, and then the lock of the steel structure installation is released, and the steel structure can be taken out.

[0022] In order to improve the convenience of the device during installation, a pair of positioning plates 26 for limiting the position of the steel structure are fixedly connected on both sides of the outer wall of the top plate 5, and rollers 27 are rotatably connected between the positioning plates 26. Through the arrangement of the positioning plates 26 and the rollers 27, when the steel structure is hoisted on the top frame 2 (because the holes on the steel structure mounting plate need to be aligned with the cylinder 6 during the installation and hoisting of the steel structure, and then when placing the steel structure, if there is no positioning structure, the hoisting personnel need to constantly adjust to align the holes on the steel structure mounting plate with the cylinder 6, which takes a lot of time), two rollers are arranged at the four corners, which can play a positioning role during the placement of the steel structure mounting plate, so that the steel structure can be quickly aligned and placed on the top frame 2, thereby ensuring that the subsequent cylinder 6 is normally inserted into the corresponding hole of the steel structure.

[0023] In order to improve the stability of the device during operation, guide rods 28 are fixedly connected on both sides of the limit block 14, and guide grooves 29 are opened on the inner side of the movable groove 38 and at the position corresponding to the guide rod 28. Through the setting of the guide rod 28 and the guide groove 29, a limiting effect can be played on the sliding position of the limit block 14, thereby preventing the limit block 14 from sliding directly downward under the extrusion of the conical block 16, and being unable to be squeezed to both sides to slide out of the cylinder 6, affecting the subsequent normal locking of the steel structure, thereby improving the stability of the device during operation.

[0024] In order to be able to adjust the locking position according to steel structures of different sizes, two pairs of fixed plates 30 are fixedly connected to the adjacent sides of the sliding frame 4, and threaded rods 31 are rotatably connected between each pair of fixed plates 30. The threads of the threaded rods 31 are arranged in opposite directions, and the outer walls of the threaded rods 31 are threadedly connected with moving blocks 33. A transverse groove 37 is opened on the adjacent side of the sliding frame 4, and the side walls of the moving blocks 33 are fixedly connected to the side walls of the top plate 5 through the transverse groove 37. The threaded rods 31 are all passed through the fixed plate 30 and fixedly connected with a rotating block 32. Through the setting of the rotating block 32, it is convenient to simultaneously rotate the two threaded rods 31 to quickly adjust the distance between the top plates 5, thereby improving the convenience of the device. A groove 34 is provided at the top of the sliding frame 4 and at a position corresponding to the rotating block 32. Through the setting of the groove 34, it is convenient for the staff to rotate the rotating block 32 to quickly adjust the horizontal distance between the top plates 5, thereby improving the convenience of the device. When the lateral spacing between the top plates 5 needs to be adjusted according to the size of the experimental steel structure, the two threaded rods 31 with opposite threads can be rotated by rotating the rotating block 32, thereby driving the two threaded moving blocks 33 to slide toward the closer side, and driving the top plate 5 and the bottom plate 7 to move, and at the same time driving the extrusion plate 9 to slide on the round rod 12, so as to achieve the adjustment of the lateral spacing between the two top plates 5, and the sliding of the extrusion plate 9 on the round rod 12 will not affect the subsequent automatic locking function.

[0025] Screw rods 35 are threadedly connected on both sides of the top frame 2, and the side walls of the screw rods 35 are rotatably connected to the side walls of the sliding frame 4. Lower grooves 36 are provided on both sides of the top of the pit platform 1. The arrangement of the lower grooves 36 not only avoids obstruction to the normal rotation of the screw rods 35, but also avoids obstruction to the position of the electric telescopic cylinder 11. When the longitudinal spacing between the sliding frames 4 needs to be adjusted according to the size of the experimental steel structure, the screws 35 on both sides are rotated. Since the screws 35 are threadedly connected to the top frame 2, the screws 35 are spirally moved toward the closer side, thereby pushing the sliding frame 4 to move toward the closer side, and at the same time driving the L-shaped plate 10 and the electric telescopic cylinder 11 to move, thereby realizing the adjustment of the longitudinal spacing between the top plates 5 on the sliding frame 4, and further using the steel structures of different sizes can be tested to improve the universal performance of the device.

[0026] The basic principles, main features and advantages of the present invention are shown and described above.

[0027] Those skilled in the art should understand that the present invention is not limited to the above-mentioned embodiments. The above-mentioned embodiments and the specification only describe the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. These changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A seismic resistance simulation device for civil engineering test and detection, comprising a pit platform (1), and a top frame (2) arranged in the pit platform (1), wherein a simulation mechanism (3) for driving the top frame (2) to shake to simulate an earthquake is arranged in the pit platform (1), characterized in that: Both ends of the inner side of the top frame (2) are slidably connected to a sliding frame (4), both ends of the inner side of the sliding frame (4) are slidably connected to a top plate (5), four corners of the top of the top plate (5) are penetrated and slidably connected to a cylinder (6), the bottom of the cylinder (6) is fixedly connected to a bottom plate (7), a return spring (8) is fixedly connected between the top plate (5) and the bottom plate (7), an extrusion plate (9) is fixedly connected to the middle position of the bottom of the bottom plate (7), the side wall of the extrusion plate (9) is inclined, an L-shaped plate (10) is fixedly connected to the bottom end of the sliding frame (4) away from the side, and a pair of electric telescopic cylinders (11) are fixedly connected to the side wall of the L-shaped plate (10); A round rod (12) is provided below the sliding frame (4); the output ends of each pair of the electric telescopic cylinders (11) are fixedly connected to the side wall of the round rod (12); a lower plate (13) is longitudinally slidably connected to the inner side of the cylinder (6); movable grooves (38) are provided on both sides of the outer wall of the cylinder (6); a pair of limit blocks (14) are transversely slidably connected to the top of the lower plate (13) and located at the movable grooves (38); the limit blocks (14) are inclined at the sides close to each other; and the middle parts of the top ends of the limit blocks (14) are provided with a plurality of stop blocks (14). A middle groove (15) is provided, and a conical block (16) is provided on the limit block (14). Upper plates (17) are fixedly connected to both sides of the conical block (16) and located above the middle groove (15). The bottom of the conical block (16) is fixedly connected to a bottom rod (18) and is arranged through the bottom end of the lower plate (13). A pair of push plates (19) are slidably connected to the bottom of the bottom plate (7). A pull rope (20) is fixedly connected between the top of the push plate (19) and the bottom of the bottom rod (18) and is arranged through the bottom end of the cylinder (6).

2. The seismic capacity simulation device for civil engineering test and detection according to claim 1 is characterized by: A pair of through grooves (21) are formed at the top of the bottom plate (7), a pair of guide rollers (22) are rotatably connected to the middle of the inner side of the through grooves (21), the pull ropes (20) pass through between the guide rollers (22), the push plate (19) is arranged at the end of the bottom inclined surface of the extrusion plate (9), and an upper spring (23) is fixedly connected between the inner side of the cylinder (6) and the top of the conical block (16).

3. The seismic capacity simulation device for civil engineering test and detection according to claim 1 is characterized by: A pair of centering springs (24) are fixedly connected between the limit blocks (14), and a lower spring (25) is fixedly connected between the bottom of the lower plate (13) and the inner side of the cylinder (6).

4. The seismic capacity simulation device for civil engineering test and detection according to claim 1 is characterized in that: A pair of positioning plates (26) for limiting the position of the steel structure are fixedly connected to both sides of the outer wall of the top plate (5), and rollers (27) are rotatably connected between the positioning plates (26).

5. The seismic capacity simulation device for civil engineering test and detection according to claim 1 is characterized by: Guide rods (28) are fixedly connected to both sides of the limit block (14), and guide grooves (29) are provided inside the movable groove (38) and at positions corresponding to the guide rods (28).

6. The seismic resistance simulation device for civil engineering test and detection according to claim 1 is characterized by: Two pairs of fixed plates (30) are fixedly connected on the adjacent sides of the sliding frame (4), and threaded rods (31) are rotatably connected between each pair of the fixed plates (30). The threads of the threaded rods (31) are arranged in opposite directions, and the outer walls of the threaded rods (31) are threadedly connected with moving blocks (33). A transverse groove (37) is provided on the adjacent sides of the sliding frame (4), and the side walls of the moving blocks (33) are fixedly connected to the side walls of the top plate (5) through the transverse groove (37).

7. The seismic capacity simulation device for civil engineering test and detection according to claim 6 is characterized by: The threaded rods (31) are all passed through the fixed plate (30) and are fixedly connected to a rotating block (32). A groove (34) is provided at the top of the sliding frame (4) and at a position corresponding to the rotating block (32).

8. The seismic capacity simulation device for civil engineering test and detection according to claim 1 is characterized by: Screw rods (35) are threadedly connected through both sides of the top frame (2), and the side walls of the screw rods (35) are rotatably connected to the side walls of the sliding frame (4). Lower grooves (36) are provided on both sides of the top of the pit platform (1).

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