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CN-117928925-B - Hysteresis loading test system for small-tonnage damper

CN117928925BCN 117928925 BCN117928925 BCN 117928925BCN-117928925-B

Abstract

The invention relates to a hysteresis loading test system of a small-tonnage damper, and belongs to the technical field of vibration control. The device comprises a steel structure main body frame, an H-shaped steel beam, a lifting system, a guiding device, a loading system, a data acquisition system and a damper connecting device. The steel structure main body frame comprises a top plate, a bottom plate and a platform plate with the same symmetry plane, the lifting system comprises a turbine worm lifter, a screw rod, an alternating current motor and an eccentric cushion block, the guiding device comprises two linear optical axes which are arranged at intervals, the loading system comprises a servo electric cylinder, a servo driver, a braking resistor and a PLC module, the data acquisition system comprises a data acquisition instrument, a sensor connecting piece, a spoke type tension pressure sensor, a synchronous bolt and a pull-wire type displacement meter, and the damper connecting device comprises a force transmission support and a damper connecting piece conversion platform. The invention can be applied to hysteresis loading tests of small-tonnage dampers to test the mechanical properties of the dampers, and the like, and can be applied to some other mechanical tests.

Inventors

  • Shi Luwei
  • PENG LINGYUN
  • ZHANG RUHAN
  • ZHAO MINGHUI
  • REN YUXUAN

Assignees

  • 北京工业大学

Dates

Publication Date
20260505
Application Date
20240311

Claims (10)

  1. 1. The utility model provides a little tonnage attenuator hysteresis load test system, includes steel construction main part frame, H shaped steel roof beam (7) to and the elevating system that links to each other with H shaped steel roof beam (7) and the guider that the interval set up, load system, data acquisition system and the attenuator connecting device who links to each other with the bottom plate in addition, its characterized in that: The steel structure main body frame comprises four square steel pipes (1) symmetrically arranged at four corners, and a top plate (2), a bottom plate (4) and a platform plate (3) which are arranged on the same symmetrical plane at the top, the bottom and the middle of the square steel pipes (1); the lifting system comprises a turbine worm lifter (11), a screw rod (9) connected with the turbine worm lifter, and an alternating current motor (12), wherein the bottom of the screw rod (9) is connected with an H-shaped steel beam (7) through a flange plate (10); The guide device comprises two linear optical axes (6) which are arranged at intervals, the top and the bottom of each optical axis (6) respectively penetrate into the top plate (2) and the platform plate (3), a linear bearing (8) penetrates into the middle position of each optical axis (6), and the linear bearings (8) are embedded and fixed in the H-shaped steel beams (7); the loading system comprises a servo electric cylinder (14), a servo driver (24), a brake resistor (23) and a PLC module (25) which are electrically connected; The data acquisition system comprises a data acquisition instrument (26), a sensor connecting piece (15) connected with the actuating end of the servo electric cylinder (14), a spoke type pull pressure sensor (16) and a synchronous bolt (22), wherein the spoke type pull pressure sensor (16) and the synchronous bolt (22) are connected with the sensor connecting piece (15), a guy type displacement meter (21) is arranged between the synchronous bolt (22) and the platform plate (3), the sensor connecting piece (15) is in threaded connection with the actuating end of the servo electric cylinder (14), the spoke type pull pressure sensor (16) is positioned on the same axis and is in bolt fixation through an outer ring mounting hole of the spoke type pull pressure sensor (16), the synchronous bolt (22) is in threaded connection with the sensor connecting piece (15) in the horizontal direction, a guy end of the guy type displacement meter (21) is connected with the synchronous bolt (22), and a guy box of the guy type displacement meter (21) is in magnetic attraction connection with the platform plate (3); the damper connecting device comprises a force transmission support (17) and a damper connecting piece conversion platform (18) which are sequentially connected with the spoke type tension pressure sensor (16).
  2. 2. The small-tonnage damper hysteresis load test system according to claim 1, wherein the top plate (2) is mutually overlapped with the bottom plate (4) and the symmetry plane of the platform plate (3) along the side length direction, four square steel pipes (1) are symmetrically arranged at four corners of the top plate (2) and the bottom plate (4) and the platform plate (3), the top of the square steel pipe (1) is welded and fixed with one side of the top plate (2), the bottom end of the square steel pipe (1) is welded with four unfilled corners of the bottom plate (4), and the square steel pipe (1) is fixed with four unfilled corner bolts of the platform plate (3).
  3. 3. The hysteresis loading test system for the small-tonnage damper is characterized in that steel flat bars (5) are arranged on four sides of the top plate (2) and the bottom plate (4), the four sides of the top plate (2) and the bottom plate (4) are welded and fixed with long sides of the steel flat bars (5), and short sides at two ends of the steel flat bars (5) are welded and fixed with the square steel tube (1).
  4. 4. The small-tonnage damper hysteresis load test system according to claim 1, wherein the rotating shaft of the alternating current motor (12) and the worm of the turbine worm lifter (11) are located on the same axis, the turbine worm lifter (11) is provided with an eccentric cushion block (13), the eccentric cushion block (13) and the bottom surface of the alternating current motor (12) are located on the same horizontal plane, the screw rod (9) penetrates through the turbine of the turbine worm lifter (11) and coincides with the central axis of the top plate (2), and a flange plate (10) arranged at the bottom of the screw rod (9) is fixed with a bolt at the central position of the H-shaped steel beam (7).
  5. 5. The small-tonnage damper hysteresis load test system according to claim 1, wherein the bottom end of the straight optical axis (6) is fixed with the platform plate (3) through bolts.
  6. 6. The small-tonnage damper hysteresis load test system according to claim 1, wherein the lower flange of the servo electric cylinder (14) is connected with the bottom plate (4) through bolts, the axis of the cylinder body of the servo electric cylinder (14) coincides with the central axis of the bottom plate (4), and the upper flange of the servo electric cylinder (14) is connected with the platform plate (3) through bolts.
  7. 7. The small-tonnage damper hysteresis load test system according to claim 6, wherein the servo driver (24) and the brake resistor (23) and the PLC module (25) are respectively arranged on the bottom plate (4), and the servo driver (24) is connected with the brake resistor (23) and the PLC module (25) through a wire harness so as to ensure normal communication of the load system.
  8. 8. A hysteresis load testing system for a small tonnage damper according to claim 1, characterized in that said force-transmitting support (17) is coaxial with said spoke-type tension-compression sensor (16) and is connected to the internal thread of said spoke-type tension-compression sensor (16), and said damper connector conversion platform (18) is coaxial with said force-transmitting support (17) and is connected by means of a bolt.
  9. 9. The small-tonnage damper hysteresis load testing system according to claim 8, wherein said damper connector conversion platform (18) is connected with a spherical hinge connector (19) or a binaural connector (20) in any combination.
  10. 10. A small tonnage damper hysteresis load testing system according to any one of claims 1-9, wherein said data acquisition instrument (26) is placed on said base plate (4), said data acquisition instrument (26) being connected to said spoke-type tension pressure sensor (16) and said pull-wire type displacement meter (21) by means of a wire harness to ensure the normal communication of said data acquisition system.

Description

Hysteresis loading test system for small-tonnage damper Technical Field The invention relates to a hysteresis loading test system of a small-tonnage damper, and belongs to the technical field of vibration control. Background The damper (energy dissipation and vibration reduction device) is one of important ways to realize vibration control, especially in the technical field of passive control, a structure provided with the damper can absorb vibration energy caused by earthquake or wind vibration through damping materials or other energy dissipation mechanisms of the damper, and further convert the vibration energy into other forms of energy such as heat energy and the like, so that vibration response to the structure is realized in the process of consuming the vibration energy. In addition, the damper has wide application in the fields of mechanical engineering, transportation, aerospace, electronic equipment, sports equipment and the like, and plays an important role in the engineering field. Taking the technical field of vibration control of a building structure as an example, the small-tonnage damper has wide application in practical engineering or experiments, such as damping units in mass tuned dampers, damping devices applied to various scale model experiments and the like. In addition, a high-efficiency, economical and safe novel damper generally needs to go through a feasibility test and then go to a process from performance to product standardization, so that the method is particularly important to the miniaturization design and test of the novel damper as the feasibility test. Secondly, if the damper is classified into a displacement type damper, a speed type damper or a composite type damper according to the common types, the displacement type damper is usually only related to the actually generated relative displacement, such as a friction damper, a metal yielding type damper and the like, the motion rate of the damper is usually not obviously influenced on the damping force, and the speed type damper is closely related to the loading rate, such as a viscous damper, an eddy current damper, an electromagnetic damper and the like, and the damper has higher requirements on the variable rate loading test. Further, to ensure that the damper is functioning properly and meets design requirements, stringent performance tests and evaluations are required. The traditional damper performance test method has various limitations, such as that a hydraulic cylinder is usually selected as a loading device, the hydraulic cylinder is difficult to realize the control requirement on the acceleration rate besides the problems of easy occurrence of working fluid and the like, if higher rate precision and automatic control are to be realized, the hydraulic cylinder is still adopted to generate high cost, and secondly, the traditional damper test system is usually aimed at a large-tonnage damping device, the size of the damping device is usually larger, the small-tonnage mechanical performance test is very inconvenient, lateral constraint support is usually required to be added for ensuring no instability in the compression process of a longer cylinder or damper, and in addition, the size of the damping device is different, a great amount of labor cost is usually consumed when the field installation is carried out for different dampers, and sometimes even the design of various adapters is required to be added for meeting the requirements of the dampers with different shapes. The test device for testing the multidirectional loading force of the hydraulic damper disclosed by CN117589437A, the test device and the test method for testing the performance of the aerospace damper disclosed by CN114088368A, the open vibration reduction damper test bed disclosed by CN220339626U and the like all have the confirmation or the problem. Therefore, a new small-tonnage damper hysteresis load test system is needed to solve the problems in the prior art. Disclosure of Invention Aiming at the defects in the prior art, the invention provides a small-tonnage damper hysteresis loading test system which is used for a hysteresis loading test of a small-tonnage damper, testing the mechanical properties of the damper and the like, and can be applied to some other mechanical tests. In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: A hysteresis loading test system of a small-tonnage damper comprises a steel structure main body frame, an H-shaped steel beam, a lifting system connected with the H-shaped steel beam, a guide device arranged at intervals, a loading system connected with a bottom plate, a data acquisition system and a damper connecting device; The steel structure main body frame comprises four square steel pipes symmetrically arranged at four corners, a top plate, a bottom plate and a platform plate which are arranged at the top, the bottom and the middle of the square steel pipes and a