Force transfer system capable of preventing out-of-plane twisting and assisting loading of hydraulic servo actuator

Abstract

The invention provides an auxiliary hydraulic servo actuator loading anti-out-of-plane twisting force transfer system which comprises a workbench, supporting columns are fixedly connected to the two ends of the top of the workbench, limiting cylinders are fixedly connected to the tops of the supporting columns, and a transmission cylinder capable of rotating is arranged between the interiors of the two limiting cylinders through a sliding structure. A fixing table is fixedly connected to the top of the workbench, a connecting frame located in the transmission cylinder is fixedly connected to the top of the fixing table, and a plurality of containing boxes are fixedly connected to the surface of the connecting frame. According to the out-of-plane twisting prevention force transmission system for assisting loading of the hydraulic servo actuator, after the multiple rotating rollers make contact with the surface of the MTS hydraulic servo actuator, out-of-plane twisting of the MTS hydraulic servo actuator in the loading process is effectively limited, so that unnecessary additional torque is avoided, and by reducing the additional torque, the loading efficiency of the MTS hydraulic servo actuator is improved. The system can ensure the reliability of test data and improve the accuracy of test results.

Description

Technical Field

[0001] The invention relates to the technical field of anti-twisting of hydraulic servo actuators, and in particular to an anti-out-of-plane torsion transmission system for assisting the loading of hydraulic servo actuators. Background Art

[0002] MTS hydraulic servo actuator is a physical performance testing instrument widely used in the field of civil engineering. It is mainly used for static and dynamic tests of large bridges and building structures or components, earthquake response pseudo-dynamic tests, etc. The working principle of MTS hydraulic servo actuator is mainly based on the combination of electrical control and hydraulic control. It uses electromagnetic force to control the hydraulic flow and pressure of the hydraulic system, thereby achieving precise control of the actuator. Specifically, the actuator receives electrical signals and uses the magnetic field generated by the electromagnet to control the movement of the valve core, thereby changing the channel size of the hydraulic valve, adjusting the hydraulic flow and pressure in the hydraulic system, and finally achieving motion control of the actuator.

[0003] In the study of the impact of earthquake disasters on structural components or overall structures, researchers widely rely on MTS loading devices to perform low-cycle reciprocating cyclic loading tests. However, traditional MTS hydraulic servo actuators often face a key problem during operation: out-of-plane torsion during the initial and loading process. If this torsion is not effectively controlled, it will be introduced into the system as an additional torque, directly interfering with the accuracy of the test data, thereby affecting the true evaluation of the structural performance.

[0004] Therefore, it is necessary to provide a new anti-out-of-plane torsional force transmission system loaded by an auxiliary hydraulic servo actuator to solve the above technical problems. Summary of the invention

[0005] The present invention provides an anti-out-of-plane torsion transmission system for assisting the loading of a hydraulic servo actuator, and solves the technical problem of out-of-plane torsion phenomenon during the initial and loading processes. If this torsion is not effectively controlled, it will be introduced into the system as an additional torque, directly interfering with the accuracy of the test data.

[0006] In order to solve the above technical problems, the present invention provides an anti-out-of-plane torsion transmission system for auxiliary hydraulic servo actuator loading, comprising a workbench, both ends of the top of the workbench are fixedly connected with support columns, the top of the support column is fixedly connected with a limit cylinder, and a rotatable transmission cylinder is arranged between the two limit cylinders through a sliding structure;

[0007] The top of the workbench is fixedly connected to a fixed platform, the top of the fixed platform is fixedly connected to a connecting frame located inside the transmission cylinder, the surface of the connecting frame is fixedly connected to a plurality of accommodating boxes, the other end of the accommodating box is fixedly connected to a transmission box, the interior of the accommodating box is rotatably connected to a threaded rod, the surface of the threaded rod is threadedly connected to a threaded sleeve, the surface of the threaded sleeve is fixedly connected to a connecting rod, the other end of the connecting rod is pulled out and extended to the interior of the transmission cylinder and is fixedly connected to a connecting seat, the interior of the connecting seat is rotatably connected to a positioning rod, the surface of the positioning rod is fixedly connected to a rotating roller with an inner side extending to the outside of the connecting seat;

[0008] One end of the threaded rod rotates and extends to the interior of the transmission box and is fixedly connected to a first bevel gear. The front side of the transmission box is rotatably connected to a transmission rod, the front end of the transmission rod is fixedly connected to a transmission gear, the inner wall surface of the transmission cylinder is fixedly connected to internal teeth meshing with the transmission gear, the rear end of the transmission rod extends to the interior of the transmission box and is fixedly connected to a second bevel gear meshing with the first bevel gear, and a transmission structure for driving the transmission cylinder to rotate is provided on the top of the workbench.

[0009] Preferably, the sliding structure includes two guide ring grooves and a plurality of cross bars, the two guide ring grooves are respectively opened on the front side and the rear side of the transmission cylinder, the plurality of cross bars are respectively rotatably connected to the front side and the rear side of the inner wall of the limiting cylinder, and the other end of the cross bar is fixedly connected to a limiting wheel embedded in the guide ring groove on the same side.

[0010] Preferably, the inner wall surface of the connecting frame is provided with a guide opening for the movement of the connecting rod.

[0011] Preferably, the transmission structure includes a fixed seat and external teeth, the external teeth are fixedly connected to the outer wall surface of the transmission cylinder, the fixed seat is fixedly connected to the top of the workbench, the top of the fixed seat is rotatably connected to a driving rod, the rear end of the driving rod is fixedly connected to a driving gear meshing with the external teeth, and the top of the workbench is provided with a self-locking structure for driving the driving rod to rotate.

[0012] Preferably, the self-locking structure includes a support seat and a worm wheel, the worm wheel is fixedly connected to the front end of the drive rod, the support seat is fixedly connected to the top of the workbench, the top of the support seat is rotatably connected to a worm screw meshing with the worm wheel, and one end of the worm screw is fixedly connected to a twist handle.

[0013] Preferably, a tool box is provided on the front side of the workbench, and a handle is fixedly connected to the surface of the tool box.

[0014] Preferably, a plurality of bases are fixedly connected to the bottom of the workbench, and mounting holes are provided on the surfaces of the bases.

[0015] Preferably, a plurality of the accommodating boxes are evenly distributed and arranged in a ring shape along the surface of the connecting frame, and an inspection cover plate is provided on the surface of the accommodating box which can be removed by a plurality of screws.

[0016] Preferably, a plurality of reinforcing ribs are fixedly connected to the surface of the connecting frame, and the plurality of reinforcing ribs are evenly distributed and spaced in a ring shape along the surface of the connecting frame.

[0017] Compared with the related art, the anti-out-of-plane torsion transmission system loaded by the auxiliary hydraulic servo actuator provided by the present invention has the following beneficial effects:

[0018] The present invention provides an anti-out-of-plane torsion transmission system for assisting the loading of a hydraulic servo actuator. After the transmission cylinder is driven to rotate by the transmission mechanism, multiple transmission gears can be driven to rotate by utilizing the transmission of the internal teeth. During the rotation of the transmission gear, the second bevel gear and the first bevel gear can be used to drive the threaded rod to rotate, thereby driving the threaded sleeve to move along the surface of the threaded rod. The connection of the connecting rod can drive the connecting seat to move. After multiple rotating rollers are in contact with the surface of the MTS hydraulic servo actuator, the out-of-plane torsion of the MTS hydraulic servo actuator during the loading process is effectively limited, thereby avoiding the generation of unnecessary additional torque. By reducing the additional torque, the system The system can ensure the reliability of test data and improve the accuracy of test results. The spacing between multiple rotating rollers is adjustable, so it can adapt to MTS hydraulic servo actuators of different specifications for protection. The operation is simple and fast. Only after the transmission cylinder is rotated, several rotating rollers can be synchronously driven for adjustment, which is beneficial to assist the MTS hydraulic servo actuator in loading test. The rotating rollers can rotate to reduce the friction constraint of the anti-out-of-plane torsion transmission system on the MTS hydraulic servo actuator during loading, extend the service life of the system, improve the protection of the MTS hydraulic servo actuator, reduce the vibration and fluctuation that may occur during the loading process, and enable the system to operate more stably. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic structural diagram of a preferred embodiment of the anti-out-of-plane torsion transmission system for auxiliary hydraulic servo actuator loading provided by the present invention;

[0020] Figure 2 for Figure 1 The structural schematic diagram of the connecting seat and the rotating roller shown;

[0021] Figure 3 for Figure 2 A local enlarged view of point A is shown;

[0022] Figure 4 for Figure 1 The schematic diagram of the structure of the external teeth and the driving gear shown;

[0023] Figure 5 for Figure 1 A schematic diagram of the structure of the self-locking structure shown;

[0024] Figure 6 for Figure 1 The schematic diagram of the structure of the cross bar and the limiting wheel is shown.

[0025] Numbers in the figure: 1. workbench; 2. fixed table; 3. connecting frame; 4. containing box; 5. supporting column; 6. limiting cylinder; 7. transmission cylinder; 8. internal teeth; 9. transmission box; 10. transmission rod; 11. transmission gear; 12. threaded sleeve; 13. first bevel gear; 14. connecting rod; 15. connecting seat; 16. rotating roller; 17. supporting seat; 18. worm; 19. twist handle; 20. fixing seat; 21. driving rod; 22. worm wheel; 23. driving gear; 24. external teeth; 25. guide ring groove; 26. cross bar; 27. limiting wheel; 28. guide port; 29. ​​positioning rod; 30. tool box; 31. handle; 32. base; 33. reinforcing rib; 34. second bevel gear; 35. threaded rod. DETAILED DESCRIPTION

[0026] The present invention will be further described below in conjunction with the accompanying drawings and implementation modes.

[0027] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 ,in, Figure 1 A schematic structural diagram of a preferred embodiment of the anti-out-of-plane torsion transmission system for auxiliary hydraulic servo actuator loading provided by the present invention; Figure 2 for Figure 1 The structural schematic diagram of the connecting seat and the rotating roller shown; Figure 3 for Figure 2 A local enlarged view of point A is shown; Figure 4 for Figure 1 The schematic diagram of the structure of the external teeth and the driving gear shown; Figure 5 for Figure 1 A schematic diagram of the structure of the self-locking structure shown; Figure 6 for Figure 1The structure diagram of the crossbar and the limit wheel shown in the figure. The anti-out-of-plane torsion transmission system loaded by the auxiliary hydraulic servo actuator includes a workbench 1, both ends of the top of the workbench 1 are fixedly connected with support columns 5, the top of the support column 5 is fixedly connected with a limit cylinder 6, and a rotatable transmission cylinder 7 is arranged between the two limit cylinders 6 through a sliding structure.

[0028] The top of the workbench 1 is fixedly connected to a fixed table 2, the top of the fixed table 2 is fixedly connected to a connecting frame 3 located inside a transmission cylinder 7, a surface of the connecting frame 3 is fixedly connected to a plurality of accommodating boxes 4, the other end of the accommodating boxes 4 is fixedly connected to a transmission box 9, the interior of the accommodating box 4 is rotatably connected to a threaded rod 35, and the surface of the threaded rod 35 is threadedly connected to a threaded sleeve 12.

[0029] A connecting rod 14 is fixedly connected to the surface of the threaded sleeve 12, the other end of the connecting rod 14 is pulled out and extends to the inside of the transmission cylinder 7, and is fixedly connected to a connecting seat 15, the inside of the connecting seat 15 is rotatably connected to a positioning rod 29, and the surface of the positioning rod 29 is fixedly connected to a rotating roller 16 whose inner side extends to the outside of the connecting seat 15.

[0030] One end of the threaded rod 35 rotates and extends to the interior of the transmission box 9, and is fixedly connected to the first bevel gear 13. The front side of the transmission box 9 is rotatably connected to the transmission rod 10, and the front end of the transmission rod 10 is fixedly connected to the transmission gear 11. The inner wall surface of the transmission cylinder 7 is fixedly connected to the internal teeth 8 meshing with the transmission gear 11.

[0031] The rear end of the transmission rod 10 extends to the interior of the transmission box 9 and is fixedly connected with a second bevel gear 34 meshing with the first bevel gear 13 . A transmission structure for driving the transmission cylinder 7 to rotate is provided on the top of the workbench 1 .

[0032] After the transmission mechanism drives the transmission cylinder 7 to rotate, the transmission of the internal teeth 8 can drive multiple transmission gears 11 to rotate. During the rotation of the transmission gear 11, the second bevel gear 34 and the first bevel gear 13 can be used to drive the threaded rod 35 to rotate, thereby driving the threaded sleeve 12 to move along the surface of the threaded rod 35. The connection of the connecting rod 14 can drive the connecting seat 15 to move.

[0033] After the multiple rotating rollers 16 are in contact with the surface of the MTS hydraulic servo actuator, the out-of-plane torsion of the MTS hydraulic servo actuator during loading is effectively limited, thereby avoiding the generation of unnecessary additional torque. By reducing the additional torque, the system can ensure the reliability of the test data and improve the accuracy of the test results. In addition, the spacing between the multiple rotating rollers 16 is adjustable, so that it can adapt to MTS hydraulic servo actuators of different specifications for protection.

[0034] The operation is simple and fast. After the transmission cylinder 7 is rotated, several rotating rollers 16 can be synchronously driven for adjustment, which is beneficial to assist the MTS hydraulic servo actuator in loading test. The rotating rollers 16 can rotate to reduce the friction constraint of the anti-out-of-plane torsion transmission system on the MTS hydraulic servo actuator during loading, thereby extending the service life of the system.

[0035] Improve the protection of MTS hydraulic servo actuators, reduce vibration and fluctuations that may occur during loading, and enable the system to operate more stably.

[0036] The sliding structure includes two guide ring grooves 25 and a plurality of cross bars 26. The two guide ring grooves 25 are respectively opened on the front side and the rear side of the transmission cylinder 7. The plurality of cross bars 26 are respectively rotatably connected to the front side and the rear side of the inner wall of the limiting cylinder 6. The other end of the cross bar 26 is fixedly connected to a limiting wheel 27 embedded in the guide ring groove 25 on the same side.

[0037] During the rotation of the transmission cylinder 7 , the limiting wheel 27 rolls inside the guide ring groove 25 , guides and limits the transmission cylinder 7 during the rotation, and improves the smoothness of the transmission cylinder 7 during the rotation.

[0038] The inner wall surface of the connecting frame 3 is provided with a guide opening 28 for the connecting rod 14 to move, and the guide opening 28 guides and limits the connecting rod 14 during the telescopic movement.

[0039] The transmission structure includes a fixed seat 20 and external teeth 24. The external teeth 24 are fixedly connected to the outer wall of the transmission cylinder 7. The fixed seat 20 is fixedly connected to the top of the workbench 1. The top of the fixed seat 20 is rotatably connected to a driving rod 21. The rear end of the driving rod 21 is fixedly connected to a driving gear 23 meshing with the external teeth 24. The top of the workbench 1 is provided with a self-locking structure for driving the driving rod 21 to rotate.

[0040] The self-locking structure includes a support seat 17 and a worm gear 22. The worm gear 22 is fixedly connected to the front end of the driving rod 21. The support seat 17 is fixedly connected to the top of the workbench 1. The top of the support seat 17 is rotatably connected to a worm 18 meshing with the worm gear 22. One end of the worm 18 is fixedly connected to a twist handle 19.

[0041] After twisting the twist handle 19, the worm 18 drives the worm wheel 22 to rotate, which can drive the driving rod 21 to rotate, and then the driving gear 23 is engaged with the external teeth 24 to drive the transmission cylinder 7 to rotate. The operation is simple and fast, and the self-locking property of the worm wheel 22 that cannot drive the worm 18 to rotate is beneficial to stability during use.

[0042] A tool box 30 is arranged on the front side of the workbench 1, and a handle 31 is fixedly connected to the surface of the tool box 30. The interior of the tool box 30 is convenient for workers to place maintenance tools, and the handle 31 is convenient for workers to pull the tool box 30 to move.

[0043] A plurality of bases 32 are fixedly connected to the bottom of the workbench 1 , and mounting holes are provided on the surfaces of the bases 32 .

[0044] A plurality of accommodating boxes 4 are evenly spaced and distributed in a ring shape along the surface of the connecting frame 3 , and an inspection cover is provided on the surface of the accommodating box 4 which can be removed by a plurality of screws.

[0045] A plurality of reinforcing ribs 33 are fixedly connected to the surface of the connection frame 3 , and the plurality of reinforcing ribs 33 are evenly spaced and distributed in a circular pattern along the surface of the connection frame 3 .

[0046] The working principle of the anti-out-of-plane torsion transmission system loaded by the auxiliary hydraulic servo actuator provided by the present invention is as follows:

[0047] After twisting the twist handle 19, the worm 18 drives the worm wheel 22 to rotate, which can drive the driving rod 21 to rotate, and then the driving gear 23 is meshed with the external teeth 24 to drive the transmission cylinder 7 to rotate. The transmission of the internal teeth 8 can drive the multiple transmission gears 11 to rotate. During the rotation of the transmission gear 11, the second bevel gear 34 and the first bevel gear 13 can be used to drive the threaded rod 35 to rotate, and then the threaded sleeve 12 can be driven to move along the surface of the threaded rod 35. The connection of the connecting rod 14 can drive the connecting seat 15 After the multiple rotating rollers 16 are in contact with the surface of the MTS hydraulic servo actuator, the out-of-plane torsion of the MTS hydraulic servo actuator during loading is effectively limited, thereby avoiding the generation of unnecessary additional torque. It can be adapted to MTS hydraulic servo actuators of different specifications for protection, which is beneficial to assist the loading test of the MTS hydraulic servo actuator. The rotating rollers 16 can rotate to reduce the friction constraint of the anti-out-of-plane torsion transmission system on the MTS hydraulic servo actuator during loading, thereby reducing the vibration and fluctuation that may occur during loading.

[0048] Compared with the related art, the anti-out-of-plane torsion transmission system loaded by the auxiliary hydraulic servo actuator provided by the present invention has the following beneficial effects:

[0049] The present invention provides an anti-out-of-plane twisting force transmission system for assisting the loading of a hydraulic servo actuator. After the transmission cylinder 7 is driven to rotate by the transmission mechanism, the transmission of the internal teeth 8 can be used to drive multiple transmission gears 11 to rotate. During the rotation of the transmission gear 11, the second bevel gear 34 and the first bevel gear 13 can be used to drive the threaded rod 35 to rotate, thereby driving the threaded sleeve 12 to move along the surface of the threaded rod 35. The connection of the connecting rod 14 can drive the connecting seat 15 to move. After multiple rotating rollers 16 are in contact with the surface of the MTS hydraulic servo actuator, the out-of-plane twisting of the MTS hydraulic servo actuator during the loading process is effectively limited, thereby avoiding the generation of unnecessary additional torque. By reducing the additional torque, the system can ensure the reliability of the test data and improve the accuracy of the test results. The spacing between the multiple rotating rollers 16 is adjustable, so it can adapt to MTS hydraulic servo actuators of different specifications for protection. The operation is simple and fast. Only after the transmission cylinder 7 is rotated, several rotating rollers 16 can be synchronously driven for adjustment, which is beneficial to assist the MTS hydraulic servo actuator in loading testing. The rotating rollers 16 can rotate to reduce the friction constraint of the anti-out-of-plane torsion transmission system on the MTS hydraulic servo actuator during loading, thereby extending the service life of the system, improving the protection of the MTS hydraulic servo actuator, and reducing the vibration and fluctuation that may occur during the loading process, so that the system can operate more stably.

[0050] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A force transmission system for preventing out-of-plane torsion for auxiliary hydraulic servo actuator loading, comprising a workbench (1), characterized in that: Both ends of the top of the workbench (1) are fixedly connected to support columns (5), the top of the support column (5) is fixedly connected to a limiting cylinder (6), and a rotatable transmission cylinder (7) is arranged between the two limiting cylinders (6) via a sliding structure; The top of the workbench (1) is fixedly connected to a fixed platform (2), the top of the fixed platform (2) is fixedly connected to a connecting frame (3) located inside the transmission cylinder (7), the surface of the connecting frame (3) is fixedly connected to a plurality of accommodating boxes (4), the other end of the accommodating box (4) is fixedly connected to a transmission box (9), the interior of the accommodating box (4) is rotatably connected to a threaded rod (35), the surface of the threaded rod (35) is threadedly connected to a threaded sleeve (12), the surface of the threaded sleeve (12) is fixedly connected to a connecting rod (14), the other end of the connecting rod (14) is pulled out and extends to the interior of the transmission cylinder (7) and is fixedly connected to a connecting seat (15), the interior of the connecting seat (15) is rotatably connected to a positioning rod (29), the surface of the positioning rod (29) is fixedly connected to a rotating roller (16) whose inner side extends to the outside of the connecting seat (15); One end of the threaded rod (35) is rotatably extended to the interior of the transmission box (9) and is fixedly connected to a first bevel gear (13); a transmission rod (10) is rotatably connected to the front side of the transmission box (9); a front end of the transmission rod (10) is fixedly connected to a transmission gear (11); an inner wall surface of the transmission cylinder (7) is fixedly connected to an internal tooth (8) meshing with the transmission gear (11); a rear end of the transmission rod (10) extends to the interior of the transmission box (9) and is fixedly connected to a second bevel gear (34) meshing with the first bevel gear (13); and a transmission structure for driving the transmission cylinder (7) to rotate is provided on the top of the workbench (1).

2. The anti-out-of-plane torsion transmission system for auxiliary hydraulic servo actuator loading according to claim 1, characterized in that: The sliding structure comprises two guide ring grooves (25) and a plurality of cross bars (26); the two guide ring grooves (25) are respectively arranged on the front side and the rear side of the transmission cylinder (7); the plurality of cross bars (26) are respectively rotatably connected to the front side and the rear side of the inner wall of the limiting cylinder (6); the other end of the cross bar (26) is fixedly connected to a limiting wheel (27) embedded in the guide ring groove (25) on the same side.

3. The anti-out-of-plane torsion transmission system for auxiliary hydraulic servo actuator loading according to claim 1, characterized in that: The inner wall surface of the connecting frame (3) is provided with a guide opening (28) for the connecting rod (14) to move.

4. The anti-out-of-plane torsion transmission system for auxiliary hydraulic servo actuator loading according to claim 1, characterized in that: The transmission structure comprises a fixed seat (20) and external teeth (24), wherein the external teeth (24) are fixedly connected to the outer wall surface of the transmission cylinder (7), and the fixed seat (20) is fixedly connected to the top of the workbench (1). The top of the fixed seat (20) is rotatably connected to a driving rod (21), and the rear end of the driving rod (21) is fixedly connected to a driving gear (23) meshing with the external teeth (24). The top of the workbench (1) is provided with a self-locking structure for driving the driving rod (21) to rotate.

5. The anti-out-of-plane torsion transmission system for auxiliary hydraulic servo actuator loading according to claim 4, characterized in that: The self-locking structure comprises a support seat (17) and a worm wheel (22), wherein the worm wheel (22) is fixedly connected to the front end of the driving rod (21), and the support seat (17) is fixedly connected to the top of the workbench (1), and the top of the support seat (17) is rotatably connected to a worm (18) meshing with the worm wheel (22), and one end of the worm (18) is fixedly connected to a twist handle (19).

6. The anti-out-of-plane torsion transmission system for auxiliary hydraulic servo actuator loading according to claim 1, characterized in that: A tool box (30) is arranged on the front side of the workbench (1), and a handle (31) is fixedly connected to the surface of the tool box (30).

7. The anti-out-of-plane torsion transmission system for auxiliary hydraulic servo actuator loading according to claim 1, characterized in that: A plurality of bases (32) are fixedly connected to the bottom of the workbench (1), and mounting holes are provided on the surfaces of the bases (32).

8. The anti-out-of-plane torsion transmission system for auxiliary hydraulic servo actuator loading according to claim 1, characterized in that: A plurality of the accommodating boxes (4) are arranged in a circular manner and evenly spaced apart along the surface of the connecting frame (3); and an inspection cover plate is provided on the surface of the accommodating box (4) which can be disassembled by means of a plurality of screws.

9. The anti-out-of-plane torsion transmission system for auxiliary hydraulic servo actuator loading according to claim 1, characterized in that: A plurality of reinforcing ribs (33) are fixedly connected to the surface of the connecting frame (3), and the plurality of reinforcing ribs (33) are evenly spaced and distributed in a circular pattern along the surface of the connecting frame (3).

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