Engineering structure vibration test device

Abstract

The invention discloses an engineering structure vibration test device, and particularly relates to the technical field of vibration test, which comprises a guide frame, a bidirectional screw rod, an adjusting motor and a counterweight vibration distance adjusting mechanism, wherein the counterweight vibration spacing adjusting mechanism comprises two threaded sleeve strips, a concave insertion block, a locking electric cylinder, an engineering structural member, an induction block and a distance sensor, and the counterweight vibration spacing adjusting mechanism further comprises a transverse counterweight vibration angle adjusting mechanism and a vertical counterweight vibration angle adjusting mechanism which are mounted at the bottom end of the guide frame. According to the invention, through the counterweight vibration spacing adjusting mechanism, two test counterweight blocks can carry out counterweight vibration test according to a specified spacing, a specified transverse angle and a specified vertical angle, and the counterweight vibration test device can be suitable for counterweight vibration tests at different spacing positions, and has the advantages of wider application range of the vibration test. Therefore, the problems that the device is difficult to adapt to counterweight vibration tests at different positions and the test limitation is large are solved.

Description

Technical Field

[0001] The invention belongs to the technical field of vibration testing, and in particular relates to an engineering structure vibration testing device. Background Art

[0002] The main uses of the engineering structure vibration test device include evaluating the strength and stability of the structure. The vibration test device can simulate the vibration environment that the engineering structure may encounter in actual use, and the vibration caused by external loads. Through the vibration test, the strength and stability of the structure under vibration can be evaluated to ensure that the structure can remain safe and reliable during long-term use.

[0003] Among the existing publicly available documents, the Chinese patent announcement number CN202522387U discloses a vibration test device for local structures of ships and marine engineering projects, the natural frequency of which avoids the test frequency range of the vibration test. The vibration test method includes: using a plurality of vibration test devices as described above, placing them on a roughly horizontal test surface of a local structure of a ship or marine engineering project to be tested. This technology can greatly improve the installation efficiency of acceleration sensors, and can quickly, reliably and conveniently implement vibration tests of local structures. However, the vibration test device still has the following problems when in use: When the vibration test device conducts a vibration test on the engineering structure, although it can provide a vibration force test on the engineering structure and check whether the engineering structure has looseness or disconnection problems, the engineering structure needs to be matched with counterweight components in two other positions during actual use. The spacing of the counterweight vibration test at the two positions is difficult to accurately adjust according to actual needs, and the lateral angle of the counterweight vibration at the two positions is also difficult to accurately adjust according to actual needs, and the vertical angle of the counterweight vibration at the two positions is also difficult to accurately adjust according to actual needs, which makes the precise adjustability of the counterweight vibration test poor and difficult to apply to counterweight vibration tests at different positions. The test has great limitations, which requires a vibration test device for an engineering structure. Summary of the invention

[0004] To solve the above problems, the present invention discloses an engineering structure vibration test device, which can be applied to counterweight vibration tests at different spacing positions through a counterweight vibration spacing adjustment mechanism, and has the advantage of a wider range of application for vibration tests, thereby solving the problem that it is difficult to apply counterweight vibration tests at different positions and the test has large limitations.

[0005] To achieve the above object, the technical solution of the present invention is as follows: A vibration test device for an engineering structure comprises a guide frame, a bidirectional screw and an adjusting motor, wherein the bidirectional screw is rotatably connected to the inner wall of the guide frame, the adjusting motor is fixedly mounted at one end of the guide frame, the adjusting motor is used to drive the bidirectional screw to rotate, and a counterweight vibration spacing adjustment mechanism is arranged on the outer wall of the bidirectional screw; the counterweight vibration spacing adjustment mechanism comprises two threaded sleeves threadedly arranged on the outer wall of the bidirectional screw, the two threads of the outer wall of the bidirectional screw are opposite and symmetrically arranged, the bottom end of each of the threaded sleeves is fixedly connected to a concave plug-in block, both sides of the concave plug-in block are fixedly mounted with a locking electric cylinder, an engineering structure is plugged into the interior of the concave plug-in block, and the outer wall of the output end of the locking electric cylinder is slidably connected to the concave plug-in block; an induction block is fixedly mounted on the top of the threaded sleeve, a distance sensor is arranged on one side of the induction block, and the distance sensor is fixedly connected to another threaded sleeve; a lateral counterweight vibration angle adjustment mechanism is arranged on the bottom end of the guide frame.

[0006] Preferably, the two threaded sleeves are slidably connected to the guide frame, and the output end of the adjusting motor is fixedly connected to the bidirectional screw. A limit slide is fixedly installed at the top of the guide frame, and the outer wall of the limit slide is slidably connected to a sleeve frame, and the top cross-sectional area of ​​the limit slide is larger than the bottom cross-sectional area; a sleeve platform is fixedly installed at the bottom of the sleeve frame, and the sleeve platform is fixedly connected to the engineering structure by bolts, and the inner wall of the sleeve platform is slidably connected to two guide rods, and the outer wall of each guide rod is slidably connected to a vibration spring, and a vibration motor is arranged between the two vibration springs, and the vibration motor is fixedly connected to the sleeve platform; a fixed plate is installed at the bottom end of the guide rod, and the two guide rods are fixedly connected to the fixed plate, and the sleeve platform and the fixed plate are fixedly connected to the vibration spring. A bracket is fixedly installed on one side of the outer wall of the fixed plate, and a controller is fixedly installed on the top of the bracket.

[0007] When the technical solution is in use, the adjusting motor drives the bidirectional screw to rotate, so that the distance between the two threaded sleeves increases. The threaded sleeve drives the concave plug to move left along the outer wall of the engineering structure, and the other concave plug moves right along the outer wall of the engineering structure. At the same time, the threaded sleeve drives the sensing block to move left, and the other threaded sleeve drives the distance sensor to move right. When the distance value sensed by the distance sensor is the same as the distance value set by the controller, the adjusting motor is turned off by the controller. The two concave plugs can be adjusted according to the specified spacing. The concave plug drives the threaded sleeve to move downward, the bidirectional screw drives the guide frame to move downward, and the limit slide moves downward along the inner wall of the sleeve frame, so that the top of the inner wall of the two concave plugs are in contact with the top position of the engineering structure. The output end of the locking electric cylinder is squeezed on the engineering structure along the inner wall of the concave plug, so that the two concave plugs are fixed at the test position of the engineering structure.

[0008] Preferably, the lateral counterweight vibration angle adjustment mechanism includes a sleeve plate fixedly mounted on the bottom end of the guide frame; a sliding frame is fixedly connected to one side of the sleeve plate, and a transmission screw is rotatably connected to the inner wall of the sliding frame, and a transmission motor is fixedly mounted on one side of the inner wall of the sliding frame, and the transmission motor is used to drive the transmission screw to rotate; a sleeve block is threadedly connected to the outer wall of the transmission screw, and the sleeve block and the sliding frame are slidably connected, the bottom end of the sleeve block is fixedly connected to a transmission rack, the inner wall of the transmission rack is meshingly transmission connected to a transverse gear ring, and the inner wall of the sleeve plate is rotatably connected to a sleeve groove ring, and the sleeve groove ring and the transverse gear ring are fixedly connected; the inner wall of the sleeve groove ring is fixedly connected to a rotating shaft, and the outer wall of the rotating shaft is fixedly connected to a guide bar, and the guide bar and the sleeve groove ring are fixedly connected.

[0009] A sleeve shaft block is fixedly connected to one side of each concave plug block, a rotating groove ring is rotatably connected to the inner wall of the sleeve shaft block, the rotating shaft and the guide bar are slidably connected to the rotating groove ring, a rotating block is provided on one side of the sleeve shaft block, and the rotating block and the rotating groove ring are fixedly connected; both ends of the rotating shaft are fixedly connected to the sensing shaft, the outer wall of each sensing shaft is rotatably connected to a sleeve bar, a balancing block is installed on the top of the sleeve bar, the guide frame and the sleeve bar are fixedly connected to the balancing block, the adjusting motor is fixedly connected to another sleeve bar, a lateral angle sensor is fixedly installed at one end of one of the sensing shafts, and the lateral angle sensor is fixedly connected to the sleeve bar; a vertical counterweight vibration angle adjustment mechanism is provided on the upper surface of the rotating block. The output end of the transmission motor is fixedly connected to the transmission screw, and the vertical cross-section of the transmission rack is concave. The vertical cross-section of the guide bar is rectangular, and a gap is provided between the guide bar and the inner wall of the concave plug block. The center point of the rotating shaft and the center point of the sensing shaft are on the same horizontal line, and the two sensing shafts are symmetrically arranged about the rotating shaft.

[0010] When the technical solution is in use, the transmission motor drives the transmission screw to rotate, the sleeve block moves forward along the inner wall of the slide frame, the transmission rack drives the transverse gear ring to rotate counterclockwise, the transverse gear ring drives the sleeve groove ring to rotate counterclockwise, and the guide bar drives the two rotating groove rings to rotate counterclockwise. The two rotating groove rings rotate counterclockwise on the inner walls of the two sleeve shaft blocks respectively, the rotating block drives the concave sleeve block to rotate counterclockwise, the rotating rod makes the sleeve rotating block rotate counterclockwise, and the rotation of the rotating shaft drives the two sensor shafts to rotate synchronously. When the angle value sensed by the transverse angle sensor is the same as the angle value set by the controller, the transmission motor is turned off by the controller.

[0011] Preferably, the vertical counterweight vibration angle adjustment mechanism includes a concave sleeve fixedly arranged on the upper surface of the rotating block; the inner wall of the concave sleeve is rotatably connected to a rotating rod, the outer wall of the rotating rod is fixedly connected to a sleeve rotating block, and a test counterweight is fixedly installed on the top of the sleeve rotating block, and a vertical angle sensor is fixedly installed on one end of the rotating rod, and the vertical angle sensor is fixedly connected to the rotating block; a driven gear is provided on one side of the concave sleeve, and the driven gear is fixedly connected to the rotating rod, the outer wall of the driven gear is meshingly connected to a linkage rack, and the lower surface of the linkage rack is fixedly connected to a threaded sleeve, the outer wall of the threaded sleeve is slidably connected to a sliding frame, and the sliding frame is fixedly connected to the rotating block; the inner wall of the threaded sleeve is threadedly connected to an adjusting screw, and a reduction motor is fixedly installed on one end of the sliding frame, and the reduction motor is used to drive the adjusting screw to rotate. The threaded sleeve is slidably connected to the rotating block, and the vertical cross-section of the linkage rack is concave; The output end of the reduction motor is fixedly connected to the adjusting screw.

[0012] When the technical solution is in use, the two reduction motors drive the two adjustment screws to rotate respectively, and the adjustment screws drive the threaded sleeve to move backward under the action of the thread transmission force, and the threaded sleeve causes the linkage rack to move backward. The driven gear drives the rotating rod to rotate clockwise, and the rotating rod drives the sleeve rotating block to rotate clockwise. When the angle value sensed by the vertical angle sensor is the same as the angle value set by the controller, the reduction motor is turned off by the controller, so that the two test counterweights can adjust the counterweight vibration angle according to the specified vertical angle.

[0013] The beneficial effects of the present invention are: 1. The present invention uses a counterweight vibration spacing adjustment mechanism. The controller sets the distance value between the two concave plug-ins, and the adjusting motor drives the bidirectional screw to rotate. The bidirectional screw drives the two threaded sleeves. Under the action of the thread transmission force, the distance between the two threaded sleeves becomes larger, and the threaded sleeves drive the concave plug-in block to move left along the outer wall of the engineering structure, and the other concave plug-in block moves right along the outer wall of the engineering structure. When the distance value sensed by the distance sensor is the same as the distance value set by the controller, the adjusting motor is turned off by the controller, and the top ends of the inner walls of the two concave plug-ins are both in contact with the top position of the engineering structure for fixation. In this way, the counterweight vibration spacing of the two test counterweights can be accurately adjusted according to actual needs, so that the counterweight vibration test has better precision and adjustability, can be applicable to counterweight vibration tests at different spacing positions, and the vibration test has a wider range of application.

[0014] 2. The present invention adopts a transverse counterweight vibration angle adjustment mechanism. The transmission motor drives the transmission screw to rotate, and the transmission screw drives the socket block to move forward under the action of the thread transmission force. The transmission rack drives the transverse gear ring to rotate counterclockwise, the transverse gear ring drives the socket groove ring to rotate counterclockwise, the guide bar drives the two rotating groove rings to rotate counterclockwise, the rotating block drives the concave sleeve block to rotate counterclockwise, and the socket rotating block drives the test counterweight block to rotate counterclockwise. When the angle value sensed by the transverse angle sensor is the same as the angle value set by the controller, the transmission motor is turned off by the controller, and the two test counterweight blocks can accurately adjust the counterweight vibration angle according to the specified transverse angle, which can be applicable to counterweight vibration tests of different transverse angles, and the vibration test has a wider range of applications.

[0015] 3. The present invention uses a vertical counterweight vibration angle adjustment mechanism. Two reduction motors drive two adjusting screws to rotate respectively. The adjusting screw drives the threaded sleeve to move backward under the action of the thread transmission force. The linkage rack drives the driven gear to rotate clockwise. The driven gear drives the rotating rod to rotate clockwise. The rotating rod will drive the sleeve rotating block to rotate clockwise. The sleeve rotating block drives the test counterweight to rotate clockwise. When the angle value sensed by the vertical angle sensor is the same as the angle value set by the controller, the reduction motor is turned off by the controller. The two test counterweights can adjust the counterweight vibration angle according to the specified vertical angle. It can be applied to counterweight vibration tests at different vertical angles, and the vibration test has a wider range of applications.

[0016] According to the mutual influence of the above-mentioned multiple effects, firstly, the counterweight vibration spacing of the two test counterweight blocks can be accurately adjusted according to actual needs, and secondly, the counterweight vibration angle of the two test counterweight blocks can be adjusted according to the specified vertical angle, and finally, the counterweight vibration angle of the two test counterweight blocks can be accurately adjusted according to the specified horizontal angle. In summary, the two test counterweight blocks can perform counterweight vibration tests according to the specified spacing, the specified horizontal angle, and the specified vertical angle, so that the counterweight vibration test has better precision and adjustability, can be applied to counterweight vibration tests at different spacing positions, and the vibration test has a wider range of application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the main structure of the engineering structure vibration test device of the present invention.

[0018] Figure 2 It is a schematic diagram of a partial structure of the engineering structural member of the present invention.

[0019] Figure 3 It is a bottom view structural schematic diagram of the engineering structure vibration test device of the present invention.

[0020] Figure 4 It is a schematic diagram of a partial structure of the connection between the engineering structural member and the socket platform of the present invention.

[0021] Figure 5 It is a schematic diagram of the local structure of the vertical section of the connection between the sliding frame and the sleeve plate of the present invention.

[0022] Figure 6 It is a schematic diagram of the local structure of the vertical section of the connection between the guide strip and the rotating shaft of the present invention.

[0023] Figure 7 For the present invention Figure 2 Enlarged structural diagram at A in the middle.

[0024] Figure 8 It is a schematic diagram of the partial structure of the connection between the rotating shaft and the sensing shaft of the present invention.

[0025] Fig. 9 It is a schematic diagram of the front structure of the vertical counterweight vibration angle adjustment mechanism of the present invention.

[0026] Fig.10 It is a schematic diagram of the partial structure of the connection between the test counterweight block and the sleeve rotating block of the present invention, viewed from above.

[0027] List of Figure Symbols: 1. Guide frame; 2. Bidirectional screw; 3. Adjustment motor; 4. Threaded sleeve; 5. Concave plug-in block; 6. Locking electric cylinder; 7. Engineering structure; 8. Induction block; 9. Distance sensor; 10. Limit slider; 11. Socket frame; 12. Socket table; 13. Guide rod; 14. Vibration spring; 15. Vibration motor; 16. Fixed plate; 17. Bracket; 18. Controller; 19. Sleeve plate; 20. Slide frame; 21. Transmission screw; 22. Transmission motor; 23. Socket block; 24. Transmission rack; 25. Sleeve groove ring; 26. Transverse gear ring; 27. Rotating shaft; 28. Guide strip; 29. ​​Sleeve shaft block; 30. Rotating groove ring; 31. Rotating block; 32. Sensing shaft; 33. Transverse angle sensor; 34. Sleeve strip; 35. Balance block; 36. Concave sleeve block; 37. Rotating rod; 38. Sleeve rotating block; 39. Test counterweight; 40. Vertical angle sensor; 41. Driven gear; 42. Linked rack; 43. Threaded sleeve block; 44. Sliding frame; 45. Adjusting screw; 46. Reducer motor. DETAILED DESCRIPTION

[0028] The present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0029] As attached Figure 1-10An engineering structure vibration test device shown in the figure includes a counterweight vibration spacing adjustment mechanism, a lateral counterweight vibration angle adjustment mechanism, and a vertical counterweight vibration angle adjustment mechanism. The settings of each mechanism enable the two test counterweight blocks 39 to perform a counterweight vibration test at a specified spacing, a specified lateral angle, and a specified vertical angle, so that the counterweight vibration test has better accuracy and adjustability, can be applied to counterweight vibration tests at different spacing positions, and has a wider range of application. The specific structural settings of each mechanism and component are as follows.

[0030] In this technical solution, as shown in the attached Figure 1-2 As shown, the counterweight vibration spacing adjustment mechanism includes two threaded sleeves 4 threadedly arranged on the outer wall of the bidirectional screw 2, the two threads on the outer wall of the bidirectional screw 2 are opposite and symmetrically opened, the bottom end of each threaded sleeve 4 is fixedly connected with a concave plug-in block 5, both sides of the concave plug-in block 5 are fixedly installed with a locking electric cylinder 6, the interior of the concave plug-in block 5 is plugged with an engineering structure 7, and the outer wall of the output end of the locking electric cylinder 6 is slidably connected to the concave plug-in block 5; the top of the threaded sleeve 4 is fixedly installed with a sensing block 8, a distance sensor 9 is provided on one side of the sensing block 8, and the distance sensor 9 is fixedly connected to another threaded sleeve 4; the bottom end of the guide frame 1 is installed with a lateral counterweight vibration angle adjustment mechanism.

[0031] In this technical solution, as shown in the attached Figure 1-4 As shown, a limiting slide bar 10 is fixedly installed on the top of the guide frame 1, and the outer wall of the limiting slide bar 10 is slidably connected to a sleeve frame 11, and the top cross-sectional area of ​​the limiting slide bar 10 is larger than the bottom cross-sectional area; a sleeve platform 12 is fixedly installed on the bottom end of the sleeve frame 11.

[0032] The socket platform 12 is fixedly connected to the engineering structure 7 by bolts, and the inner wall of the socket platform 12 is slidably connected to two guide rods 13, the outer wall of each guide rod 13 is slidably connected to a vibration spring 14, a vibration motor 15 is provided between the two vibration springs 14, and the vibration motor 15 is fixedly connected to the socket platform 12; a fixed plate 16 is installed at the bottom end of the guide rod 13, the two guide rods 13 are fixedly connected to the fixed plate 16, and the socket platform 12 and the fixed plate 16 are fixedly connected to the vibration spring 14. A bracket 17 is fixedly installed on one side of the outer wall of the fixed plate 16, and a controller 18 is fixedly installed on the top of the bracket 17, so that the fixed plate 16 can be fixed at the installation ground position by inserting the expansion bolts into the holes of the fixed plate 16. The bracket 17 supports the controller 18, and the limit slide bar 10 moves up along the inner wall of the socket frame 11 to insert the engineering structure 7 into the socket platform 12. After installation, the vibration motor 15 is started by the controller 18, and the vibration motor 15 drives the socket platform 12 to vibrate. The socket platform 12 vibrates vertically along the outer walls of the two guide rods 13, and the socket platform 12 drives the two vibration springs 14 to vibrate, and the socket platform 12 drives the engineering structure 7 to vibrate.

[0033] In this technical solution, as shown in the attached Figure 5-8 As shown, the lateral counterweight vibration angle adjustment mechanism includes a sleeve plate 19 fixedly mounted on the bottom end of the guide frame 1; a sliding frame 20 is fixedly connected to one side of the sleeve plate 19, and a transmission screw 21 is rotatably connected to the inner wall of the sliding frame 20, and a transmission motor 22 is fixedly mounted on one side of the inner wall of the sliding frame 20, and the transmission motor 22 is used to drive the transmission screw 21 to rotate; a sleeve block 23 is threadedly connected to the outer wall of the transmission screw 21, and the sleeve block 23 is slidably connected to the sliding frame 20, and a transmission rack 24 is fixedly connected to the bottom end of the sleeve block 23, and a transverse gear ring 26 is meshingly connected to the inner wall of the transmission rack 24, and a sleeve groove ring 25 is rotatably connected to the inner wall of the sleeve plate 19, and the sleeve groove ring 25 is fixedly connected to the transverse gear ring 26; a rotating shaft 27 is fixedly connected to the inner wall of the sleeve groove ring 25, and a guide bar 28 is fixedly connected to the outer wall of the rotating shaft 27, and the guide bar 28 is fixedly connected to the sleeve groove ring 25.

[0034] A sleeve shaft block 29 is fixedly connected to one side of each concave plug block 5, and a rotating groove ring 30 is rotatably connected to the inner wall of the sleeve shaft block 29. The rotating shaft 27 and the guide bar 28 are slidingly connected to the rotating groove ring 30. A rotating block 31 is provided on one side of the sleeve shaft block 29, and the rotating block 31 is fixedly connected to the rotating groove ring 30; both ends of the rotating shaft 27 are fixedly connected to the sensing shaft 32, and the outer wall of each sensing shaft 32 is rotatably connected to a sleeve bar 34.

[0035] A balancing block 35 is installed at the top of the sleeve strip 34, and the guide frame 1 and the sleeve strip 34 are fixedly connected to the balancing block 35. The adjustment motor 3 is fixedly connected to another sleeve strip 34. A lateral angle sensor 33 is fixedly installed at one end of one of the sensing shafts 32, and the lateral angle sensor 33 is fixedly connected to the sleeve strip 34. A vertical counterweight vibration angle adjustment mechanism is provided on the upper surface of the rotating block 31. The output end of the transmission motor 22 is fixedly connected to the transmission screw 21, and the vertical cross-section of the transmission rack 24 is concave. The vertical cross-section of the guide strip 28 is rectangular, and a gap is provided between the guide strip 28 and the inner wall of the concave plug-in block 5. The center point of the rotating shaft 27 and the center point of the sensing shaft 32 are on the same horizontal line, and the two sensing shafts 32 are symmetrically arranged about the rotating shaft 27.

[0036] In this technical solution, as shown in the attached Figure 9-10 As shown, the vertical counterweight vibration angle adjustment mechanism includes a concave sleeve block 36 fixedly arranged on the upper surface of the rotating block 31; the inner wall of the concave sleeve block 36 is rotatably connected to a rotating rod 37, the outer wall of the rotating rod 37 is fixedly connected to a sleeve rotating block 38, and a test counterweight block 39 is fixedly installed on the top of the sleeve rotating block 38, and a vertical angle sensor 40 is fixedly installed at one end of the rotating rod 37, and the vertical angle sensor 40 is fixedly connected to the rotating block 31.

[0037] A driven gear 41 is provided on one side of the concave sleeve 36, and the driven gear 41 is fixedly connected to the rotating rod 37. The outer wall of the driven gear 41 is meshed and transmission-connected with a linkage rack 42, and the lower surface of the linkage rack 42 is fixedly connected with a threaded sleeve 43. The outer wall of the threaded sleeve 43 is slidably connected with a sliding frame 44, and the sliding frame 44 is fixedly connected to the rotating block 31; the inner wall of the threaded sleeve 43 is threadedly connected with an adjusting screw 45, and one end of the sliding frame 44 is fixedly installed with a reduction motor 46, which is used to drive the adjusting screw 45 to rotate. The threaded sleeve 43 is slidably connected to the rotating block 31, and the vertical cross-section of the linkage rack 42 is concave; the output end of the reduction motor 46 is fixedly connected to the adjusting screw 45.

[0038] The working principle of the engineering structure vibration test device of the present invention is as follows: First, when the present invention is installed, the expansion bolts are first inserted into the holes of the fixing plate 16, so that the fixing plate 16 can be fixed at the installation ground position, and the fixing plate 16 supports the bracket 17, the bracket 17 supports the controller 18, and the fixing plate 16 supports the two guide rods 13 at the same time, thereby increasing the stability of the two guide rods 13. Then, the hand is moved upward while holding the outer wall of the limit slide 10, and the limit slide 10 moves upward along the inner wall of the sleeve frame 11, and then the engineering structure 7 is inserted into the sleeve platform 12, and the engineering structure 7 and the sleeve platform 12 are fixedly installed by bolts.

[0039] Secondly, when the present invention adjusts the counterweight vibration spacing, the controller 18 sets the distance value between the two concave plug-in blocks 5, and the controller 18 starts the adjustment motor 3, and the balance block 35 can be fixed on the guide frame 1, so as to balance the weight of the adjustment motor 3, and the balance block 35 can also support the sleeve strip 34. In this way, the adjustment motor 3 drives the bidirectional screw 2 to rotate, and the bidirectional screw 2 drives the two thread sleeve strips 4 under the action of the thread transmission force, so that the distance between the two thread sleeve strips 4 increases. The thread sleeve strip 4 moves left along the inner wall of the guide frame 1, and the other thread sleeve strip 4 moves right along the inner wall of the guide frame 1, and the thread sleeve strip 4 drives the concave plug-in block 5 to move left along the outer wall of the engineering structure 7, and the other concave plug-in block 5 moves right along the outer wall of the engineering structure 7. At the same time, the thread sleeve strip 4 drives the sensing block 8 to move left, and the other thread sleeve strip 4 drives the distance sensor 9 to move right, and the distance between the distance sensor 9 and the sensing block 8 increases, and the distance sensor 9 performs distance sensing on the sensing block 8. When the distance value sensed by the distance sensor 9 is the same as the distance value set by the controller 18 , the regulating motor 3 is turned off by the controller 18 .

[0040] In this way, the two concave plugs 5 can be adjusted according to the specified spacing, and the limiting slide bar 10 is loosened at the same time. Under the action of gravity, the two concave plugs 5 move downward, the concave plugs 5 drive the threaded sleeve strip 4 to move downward, the threaded sleeve strip 4 drives the bidirectional screw 2 to move downward, the bidirectional screw 2 drives the guide frame 1 to move downward, the guide frame 1 drives the limiting slide bar 10 to move downward, and the limiting slide bar 10 moves downward along the inner wall of the sleeve frame 11, so that the top of the inner wall of the two concave plugs 5 are in contact with the top position of the engineering structure 7. At the same time, the controller 18 starts multiple locking electric cylinders 6, and the output end of the locking electric cylinder 6 is pressed on the engineering structure 7 along the inner wall of the concave plug 5, so that the two concave plugs 5 can be fixed at the test position of the engineering structure 7 according to the specified spacing, and the two concave plugs 5 can be adjusted by counterweight vibration according to the specified spacing.

[0041] At the same time, when the present invention adjusts the vertical counterweight vibration angle, the two reduction motors 46 are started through the controller 18, and the two reduction motors 46 respectively drive the two adjusting screws 45 to rotate. The adjusting screws 45 drive the threaded sleeve 43 to move backward under the action of the thread transmission force, and the threaded sleeve 43 drives it to move backward along the inner wall of the sliding frame 44, and the threaded sleeve 43 causes the linkage rack 42 to move backward.

[0042] At the same time, the linkage rack 42 drives the driven gear 41 to rotate clockwise, and the driven gear 41 drives the rotating rod 37 to rotate clockwise. The rotating rod 37 rotates clockwise on the inner wall of the concave sleeve block 36, and the rotating rod 37 drives the sleeve rotating block 38 to rotate clockwise, and the sleeve rotating block 38 drives the test counterweight block 39 to rotate clockwise. The vertical angle sensor 40 is supported by the rotating block 31, and the vertical angle sensor 40 performs angle sensing on the rotating rod 37. When the angle value sensed by the vertical angle sensor 40 is the same as the angle value set by the controller 18, the reduction motor 46 is turned off by the controller 18, so that the two test counterweight blocks 39 can adjust the counterweight vibration angle according to the specified vertical angle.

[0043] Then, when the present invention adjusts the lateral counterweight vibration angle, the controller 18 is used to start the transmission motor 22, the transmission motor 22 drives the transmission screw 21 to rotate, the transmission screw 21 drives the sleeve block 23 to move forward under the action of the thread transmission force, the sleeve block 23 moves forward along the inner wall of the slide frame 20, the sleeve block 23 drives the transmission rack 24 to move forward, the transmission rack 24 drives the lateral gear ring 26 to rotate counterclockwise, the transmission rack 24 drives the rotating shaft 27 and the guide bar 28 to rotate counterclockwise synchronously. The lateral gear ring 26 drives the sleeve groove ring 25 to rotate counterclockwise, the sleeve groove ring 25 rotates counterclockwise along the inner wall of the sleeve plate 19, and the guide bar 28 drives the two rotating groove rings 30 to rotate counterclockwise.

[0044] The two rotating groove rings 30 rotate counterclockwise on the inner walls of the two sleeve shaft blocks 29 respectively, and the rotating groove rings 30 drive the rotating block 31 to rotate counterclockwise, and the rotating block 31 drives the concave sleeve block 36 to rotate counterclockwise, and the concave sleeve block 36 drives the rotating rod 37 to rotate counterclockwise, and the rotating rod 37 makes the sleeve rotating block 38 rotate counterclockwise, and the sleeve rotating block 38 drives the test counterweight block 39 to rotate counterclockwise. At the same time, the rotation of the rotating shaft 27 will drive the two sensing shafts 32 to rotate synchronously, and the sensing shaft 32 rotates counterclockwise on the inner wall of the sleeve bar 34. The sleeve bar 34 can be stably supported by the balance block 35, and the sleeve bar 34 supports the lateral angle sensor 33, and the lateral angle sensor 33 realizes angle sensing of the sensing shaft 32. When the angle value sensed by the lateral angle sensor 33 is the same as the angle value set by the controller 18, the transmission motor 22 is turned off by the controller 18, so that the two test counterweight blocks 39 can adjust the counterweight vibration angle according to the specified lateral angle.

[0045] Finally, when the present invention performs a vibration test, the controller 18 is used to start the vibration motor 15, the vibration motor 15 drives the sleeve platform 12 to vibrate, the sleeve platform 12 vibrates vertically along the outer wall of the two guide rods 13, and the sleeve platform 12 drives the two vibration springs 14 to vibrate, the sleeve platform 12 drives the engineering structure 7 to vibrate, the engineering structure 7 drives the two concave plug blocks 5 to vibrate, the concave plug blocks 5 drive the sleeve shaft block 29 to vibrate, the sleeve shaft block 29 drives the rotating groove ring 30 to vibrate, the rotating groove ring 30 drives the rotating block 31 to vibrate, the rotating block 31 drives the concave sleeve block 36 to vibrate, and the concave sleeve block 36 drives the rotating rod 37 to vibrate. At the same time, the rotating rod 37 drives the sleeve rotating block 38 to vibrate, and the sleeve rotating block 38 drives the test counterweight block 39 to vibrate, so that the two test counterweight blocks 39 can perform a counterweight vibration test according to the specified spacing, the specified horizontal angle, and the specified vertical angle. After the vibration test, the vibration motor 15 is turned off by the controller 18 to check whether there is damage to each node on the engineering structure 7.

[0046] The contents not described in detail in the specification belong to the prior art known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited, and conventional equipment can be used. In this technical solution, the electrical control components not mentioned are not shown in the figure because they belong to the prior art and will not be described here.

[0047] It should be noted that the above content only illustrates the technical idea of ​​the present invention and cannot be used to limit the protection scope of the present invention. For ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications all fall within the protection scope of the claims of the present invention.

Claims

1. An engineering structure vibration test device, comprising a guide frame (1), a bidirectional screw (2) and an adjustment motor (3), wherein the bidirectional screw (2) is rotatably connected to the inner wall of the guide frame (1), and the adjustment motor (3) is fixedly mounted on one end of the guide frame (1), characterized in that: The regulating motor (3) is used to drive the bidirectional screw (2) to rotate, and a counterweight vibration spacing regulating mechanism is provided on the outer wall of the bidirectional screw (2); The counterweight vibration spacing adjustment mechanism comprises two threaded sleeves (4) threadedly arranged on the outer wall of the bidirectional screw (2), the two threads on the outer wall of the bidirectional screw (2) are opposite and symmetrically arranged, the bottom end of each of the threaded sleeves (4) is fixedly connected to a concave plug-in block (5), both sides of the concave plug-in block (5) are fixedly installed with a locking electric cylinder (6), the interior of the concave plug-in block (5) is plugged with an engineering structure (7), and the outer wall of the output end of the locking electric cylinder (6) is slidably connected to the concave plug-in block (5); A sensing block (8) is fixedly mounted on the top of the threaded sleeve (4), a distance sensor (9) is provided on one side of the sensing block (8), and the distance sensor (9) is fixedly connected to another threaded sleeve (4); A lateral counterweight vibration angle adjustment mechanism is installed at the bottom end of the guide frame (1).

2. The engineering structure vibration test device according to claim 1, characterized in that: The two threaded sleeves (4) are both slidably connected to the guide frame (1), and the output end of the regulating motor (3) is fixedly connected to the bidirectional screw (2).

3. The engineering structure vibration test device according to claim 1, characterized in that: A limit slide bar (10) is fixedly mounted on the top of the guide frame (1), and a sleeve frame (11) is slidably connected to the outer wall of the limit slide bar (10), and the cross-sectional area of ​​the top end of the limit slide bar (10) is larger than the cross-sectional area of ​​the bottom end thereof; A sleeve platform (12) is fixedly mounted at the bottom end of the sleeve frame (11); the sleeve platform (12) is fixedly connected to the engineering structure (7) by bolts; the inner wall of the sleeve platform (12) is slidably connected to two guide rods (13); the outer wall of each guide rod (13) is slidably connected to a vibration spring (14); a vibration motor (15) is provided between the two vibration springs (14); and the vibration motor (15) is fixedly connected to the sleeve platform (12); A fixing plate (16) is mounted on the bottom end of the guide rod (13), the two guide rods (13) are fixedly connected to the fixing plate (16), and the sleeve platform (12) and the fixing plate (16) are fixedly connected to the vibration spring (14).

4. The engineering structure vibration test device according to claim 3, characterized in that: A bracket (17) is fixedly mounted on one side of the outer wall of the fixed plate (16), and a controller (18) is fixedly mounted on the top of the bracket (17).

5. The engineering structure vibration test device according to claim 1, characterized in that: The lateral counterweight vibration angle adjustment mechanism comprises a sleeve plate (19) fixedly mounted on the bottom end of the guide frame (1); A sliding frame (20) is fixedly connected to one side of the sleeve plate (19), and a transmission screw (21) is rotatably connected to the inner wall of the sliding frame (20). A transmission motor (22) is fixedly installed on one side of the inner wall of the sliding frame (20), and the transmission motor (22) is used to drive the transmission screw (21) to rotate; The outer wall of the transmission screw (21) is threadedly connected to a sleeve block (23), and the sleeve block (23) is slidably connected to the slide frame (20), the bottom end of the sleeve block (23) is fixedly connected to a transmission rack (24), the inner wall of the transmission rack (24) is meshingly connected to a transverse gear ring (26), and the inner wall of the sleeve plate (19) is rotatably connected to a sleeve groove ring (25), and the sleeve groove ring (25) and the transverse gear ring (26) are fixedly connected; The inner wall of the sleeve groove ring (25) is fixedly connected to a rotating shaft (27), and the outer wall of the rotating shaft (27) is fixedly connected to a guide bar (28), and the guide bar (28) is fixedly connected to the sleeve groove ring (25); A sleeve shaft block (29) is fixedly connected to one side of each of the concave plug blocks (5); a rotating groove ring (30) is rotatably connected to the inner wall of the sleeve shaft block (29); the rotating shaft (27) and the guide bar (28) are slidably connected to the rotating groove ring (30); a rotating block (31) is provided on one side of the sleeve shaft block (29); and the rotating block (31) is fixedly connected to the rotating groove ring (30); Both ends of the rotating shaft (27) are fixedly connected to sensing shafts (32), the outer wall of each sensing shaft (32) is rotatably connected to a sleeve bar (34), a balancing block (35) is installed at the top of the sleeve bar (34), the guide frame (1) and the sleeve bar (34) are fixedly connected to the balancing block (35), the adjustment motor (3) is fixedly connected to another sleeve bar (34), a lateral angle sensor (33) is fixedly installed at one end of one of the sensing shafts (32), and the lateral angle sensor (33) is fixedly connected to the sleeve bar (34); A vertical counterweight vibration angle adjustment mechanism is provided on the upper surface of the rotating block (31).

6. The engineering structure vibration test device according to claim 5, characterized in that: The output end of the transmission motor (22) is fixedly connected to the transmission screw (21), and the vertical cross-section of the transmission rack (24) is concave.

7. The engineering structure vibration test device according to claim 5, characterized in that: The vertical cross-section of the guide strip (28) is rectangular, and a gap is provided between the guide strip (28) and the inner wall of the concave insert block (5).

8. The engineering structure vibration test device according to claim 5, characterized in that: The center point of the rotating shaft (27) and the center point of the sensing shaft (32) are located on the same horizontal line, and the two sensing shafts (32) are symmetrically arranged about the rotating shaft (27).

9. The engineering structure vibration test device according to claim 5, characterized in that: The vertical counterweight vibration angle adjustment mechanism comprises a concave sleeve block (36) fixedly arranged on the upper surface of the rotating block (31); The inner wall of the concave sleeve block (36) is rotatably connected to a rotating rod (37), the outer wall of the rotating rod (37) is fixedly connected to a sleeve rotating block (38), and a test counterweight (39) is fixedly mounted on the top of the sleeve rotating block (38), a vertical angle sensor (40) is fixedly mounted on one end of the rotating rod (37), and the vertical angle sensor (40) is fixedly connected to the rotating block (31); A driven gear (41) is provided on one side of the concave sleeve block (36), and the driven gear (41) is fixedly connected to the rotating rod (37); the outer wall of the driven gear (41) is meshingly connected to a linkage rack (42), and the lower surface of the linkage rack (42) is fixedly connected to a threaded sleeve block (43); the outer wall of the threaded sleeve block (43) is slidably connected to a sliding frame (44), and the sliding frame (44) is fixedly connected to the rotating block (31); The inner wall of the threaded sleeve block (43) is threadedly connected with an adjusting screw (45), and a reduction motor (46) is fixedly mounted on one end of the sliding frame (44), wherein the reduction motor (46) is used to drive the adjusting screw (45) to rotate.

10. The engineering structure vibration test device according to claim 9, characterized in that: The threaded sleeve block (43) is slidably connected to the rotating block (31), and the vertical cross-section of the linkage rack (42) is concave; The output end of the reduction motor (46) is fixedly connected to the adjusting screw (45).

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