Device for detecting mechanical properties of viscous damper

Abstract

The invention discloses a viscous damper mechanical property detection device, and relates to the technical field of viscous damper mechanical property detection. Comprising a base, an actuator adjusting support, an end baffle, a horizontal guide rail, an actuator seat, an actuator, a spoke type pressure sensor, a viscous damper piston rod eccentric locking mechanism, a viscous damper horizontal movement lifting mechanism, a viscous damper fixed end cover eccentric locking mechanism, a displacement sensor, an accelerometer, a data acquisition controller and an upper computer. An automatic lifting adjusting mechanism is fixed to the actuator base, a viscous damper is horizontally fixed between the viscous damper piston rod eccentric locking mechanism and the viscous damper end cover eccentric locking mechanism, and a viscous damper horizontal moving lifting mechanism is arranged below the viscous damper. The viscous damper horizontal movement lifting mechanism can horizontally move along the horizontal guide rail. The device can simulate the actual working condition of the viscous damper under the action of an eccentric load, and can horizontally lift and move the viscous damper.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical performance detection of building seismic dampers, and in particular to a mechanical performance detection device for a viscous damper. Background Art

[0002] The viscous damper is a cylinder structure filled with damping medium. It mainly drives the flow of the internal medium through the reciprocating motion of the piston, thereby producing a damping effect and converting kinetic energy into heat energy. It is an energy-consuming shock-absorbing device. This damper is widely used in high-rise buildings, bridges, seismic retrofitting of building structures, seismic resistance of industrial pipeline equipment, and military industry. Its working principle is that when the piston reciprocates in the cylinder, the damping medium flows rapidly in the two separated chambers, and violent friction occurs between the medium molecules and between the medium and the piston. When the medium passes through the piston hole, it produces huge throttling damping. The combined force of these effects is the damping force. The damping force generated in the flow converts the seismic energy into heat dissipation through the reciprocating motion of the piston in the viscous liquid, so that the piston movement speed gradually decreases, thereby achieving the purpose of damping energy consumption.

[0003] After the viscous damper is designed into a product, its mechanical properties (ultimate failure load, displacement) and hysteresis performance should be tested before it is used in actual projects. Only products that meet the relevant mechanical standards and hysteresis performance can meet the seismic performance requirements of buildings in actual earthquakes and achieve satisfactory seismic effects. The viscous damper must be installed horizontally during installation. The reciprocating load it is subjected to during operation is an eccentric load. The current testing method is axial tension and compression to test the mechanical properties of the viscous damper, which is different from the actual working conditions. Therefore, the development of a mechanical performance testing device that can simulate the actual working conditions of the viscous damper under eccentric loads, which can be adaptively adjusted and installed for viscous dampers of different lengths and lift and move the viscous damper during the adjustment process to ensure the horizontal posture of the viscous damper is a technical problem that urgently needs to be solved. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a viscous damper mechanical property testing device, which can simulate the actual working conditions of the viscous damper under the action of eccentric load; at the same time, the device can adapt to the installation and fixation of viscous dampers of different lengths, and can lift and move the viscous damper horizontally, so as to facilitate the horizontal movement of the viscous damper and ensure the horizontal position accuracy of the installation, thereby ensuring the accuracy of the test results; the fixed position mounting support of the device can be adjusted horizontally and locked on the horizontal frame after being adjusted to the appropriate position to withstand the tensile and compressive loads transmitted by the viscous damper when it is subjected to eccentric tensile and compressive loads.

[0005] In order to achieve the above technical effects, the present invention is implemented by the following technical solutions: A viscous damper mechanical property testing device comprises a base, an actuator adjustment support, an end baffle, a horizontal guide rail, an actuator base, an actuator, a spoke pressure sensor, an eccentric locking mechanism of a viscous damper piston rod, a horizontal movement lifting mechanism of the viscous damper, an eccentric locking mechanism of a fixed end cover of the viscous damper, a displacement sensor, an accelerometer, a data acquisition controller and a host computer, wherein the actuator adjustment support and the end baffle are respectively fixed at both ends of the base, the horizontal guide rail is fixed between the actuator adjustment support and the end baffle and is arranged in pairs, and the actuator is fixed to the actuator. In the actuator seat, an automatic lifting adjustment mechanism is fixed on the actuator seat, and the actuator seat can slide up and down along the actuator adjustment support. The piston rod of the actuator is threadedly connected to the spoke-type pressure sensor, and the spoke-type pressure sensor is connected to the viscous damper piston rod eccentric locking mechanism by bolts. A viscous damper is horizontally fixed between the viscous damper piston rod eccentric locking mechanism and the viscous damper end cover eccentric locking mechanism. A viscous damper horizontal movement lifting mechanism is arranged under the viscous damper, and the viscous damper horizontal movement lifting mechanism can be horizontally moved along the horizontal guide rail. The actuator is moved and automatically lifted to adjust the lifting height of the viscous damper. A horizontal adjustment screw is arranged between the actuator adjustment support and the end baffle. The horizontal adjustment screw is fixedly connected to the rotating shaft of the horizontal adjustment drive motor fixed on the actuator adjustment support. The eccentric locking mechanism of the fixed end cover of the viscous damper is threadedly connected to the horizontal adjustment screw and can slide horizontally along the horizontal guide rail when the horizontal adjustment screw rotates. The eccentric locking mechanism of the fixed end cover of the viscous damper is provided with a lateral locking mechanism. The lateral locking mechanism is adjusted to a suitable position by the eccentric locking mechanism of the end cover of the viscous damper. The actuator, actuator seat, spoke-type pressure sensor, horizontal adjustment drive motor, viscous damper horizontal movement lifting mechanism, viscous damper fixed end cover eccentric locking mechanism, displacement sensor and accelerometer are all connected with the data acquisition controller, and the data acquisition controller is connected with the host computer.

[0006] Furthermore, the horizontal guide rail is an I-shaped guide rail, ribs are welded in the outer guide rail groove of the horizontal guide rail, a clamping rack is fixed to the outer side of the upper wing plate of the horizontal guide rail, the eccentric locking mechanism of the fixed end cover of the viscous damper is clamped and locked on the clamping rack, and two roller walking grooves are opened on the base.

[0007] Furthermore, the actuator adjustment support includes a support plate and a top plate, the support plate is provided with a height adjustment slot, a rotating shaft through-hole is provided below the height adjustment slot, the rotating shaft of the horizontal adjustment drive motor passes through the rotating shaft through-hole and is fixedly connected to the horizontal adjustment screw, limiting slots are provided on the slot walls on both sides of the height adjustment slot, and a height adjustment meshing rack is fixed on the slot walls of the limiting slot, the actuator seat is an H-shaped block structure, an actuator mounting hole is provided at the center of the actuator seat, the actuator is fixed in the actuator mounting hole, rotating grooves are provided on both sides of the actuator seat, a rotating gear is hinged in the rotating groove, a height adjustment motor is fixed on the outer slot plate of the rotating groove, the rotating shaft of the height adjustment motor is fixedly connected to the rotating gear, the slot plates on both sides of the rotating groove are clamped on the outer wall of the support plate, the rotating groove is aligned with the limiting slot and the rotating gear is meshed with the height adjustment meshing rack, and the height adjustment motor is connected to the data acquisition controller.

[0008] Furthermore, the eccentric locking mechanism of the viscous damper piston rod includes a U-shaped clamp, an extended connecting plate and a viscous damper piston rod mounting mechanism, the end of the U-shaped clamp is fixed with a flange connecting plate, the spoke-type pressure sensor is flange-connected to the flange connecting plate, one end of the extended connecting plate is inserted into the U-shaped groove of the U-shaped clamp and is fixed to the U-shaped clamp by bolts, the other end of the extended connecting plate is clamped into the top clamping groove of the viscous damper piston rod mounting mechanism and is fixed to the viscous damper piston rod mounting mechanism by bolts, the bottom of the viscous damper piston rod mounting mechanism is integrally connected with a piston rod clamping plate, a bolt locking hole is opened on the piston rod clamping plate, and the infrared light receiving sensor and accelerometer of the displacement sensor are fixed on the top surface of the extended connecting plate.

[0009] Furthermore, the horizontal movement lifting mechanism of the viscous damper includes a lifting base, a connecting plate, a hydraulic lifting rod and a horizontal movement mechanism. The connecting plate is horizontally arranged, and the lifting base is respectively fixed to the two ends of the connecting plate, and the connecting plate is fixed to the top of the hydraulic lifting rod. The hydraulic lifting rod is fixed to the horizontal movement mechanism. The horizontal movement mechanism includes a rectangular travel box with openings at both ends, and the horizontal adjustment screw passes through the cavity of the rectangular travel box. The hydraulic lifting rod is fixed to the top cover plate of the rectangular travel box. A pair of travel wheels are fixed on both sides of the rectangular travel box, and a travel drive motor is fixed on one of the travel wheels. The rotating shaft of the travel drive motor is fixedly connected to the travel wheel. The rectangular travel box moves horizontally to the left or right along the horizontal guide rail when the travel drive motor rotates forward or reversely, and the travel drive motor is connected to the data acquisition controller.

[0010] Furthermore, the eccentric locking mechanism of the fixed end cover of the viscous damper includes a horizontal adjustment slider, a pair of viscous damper end cover clamping plates are fixed on the top of the horizontal adjustment slider, a height adjustment slide groove is opened on the viscous damper end cover clamping plate, a threaded through hole is opened at the center of the horizontal adjustment slider, the horizontal adjustment screw passes through the threaded through hole and is threadedly connected to the horizontal adjustment slider, two rows of rollers are fixed to the bottom of the horizontal adjustment slider, two rollers are arranged in each row, lateral wing plates extend outward on both sides of the horizontal adjustment slider, an electric hydraulic cylinder is fixed on the outer side of the lateral wing plate, a clamping tooth plate is arranged on the inner side of the lateral wing plate, the clamping tooth plate is fixed on the piston rod of the electric hydraulic cylinder, the clamping tooth plate is engaged with the engaging rack of the horizontal guide rail under the pressing action of the electric hydraulic cylinder, and the electric hydraulic cylinder is connected to the data acquisition controller.

[0011] Furthermore, the data acquisition controller includes a packaging shell and a base plate, a battery, a control circuit board and several relays are fixed on the base plate, a single-chip microcomputer, a power module, an analog-to-digital conversion module, a digital-to-analog conversion module, a constant current source drive module and a communication module are fixed on the control circuit board, the battery is connected to the single-chip microcomputer through the power module, an analog electrical signal acquisition interface and a communication interface are fixed on the control circuit board, the analog electrical signal acquisition interface is connected to the single-chip microcomputer through the analog-to-digital conversion module, the relay is connected to the single-chip microcomputer through the digital-to-analog conversion module, and the communication interface is connected to the single-chip microcomputer through the communication module, the actuator, the actuator adjustment support, the horizontal adjustment drive motor, the viscous damper horizontal movement lifting mechanism, and the viscous damper fixed end cover eccentric locking mechanism are all connected to the relay, and the spoke pressure sensor, displacement sensor and accelerometer are all connected to the analog electrical signal acquisition interface.

[0012] The beneficial effects of the present invention are as follows: 1. This device uses the eccentric locking mechanism of the piston rod of the viscous damper and the eccentric locking mechanism of the end cover of the viscous damper to transmit the eccentric load, so as to truly simulate the stress state of the viscous damper under the eccentric tension and compression load and detect its mechanical properties, so as to obtain more realistic test results; 2. The fixed position of the eccentric locking mechanism of the fixed end cover of the viscous damper of the device can be adjusted to adapt to viscous dampers of different lengths, and can be clamped on the horizontal guide rail after adjustment to provide sufficient reaction force for the viscous damper; 3. The horizontal movement lifting mechanism of the viscous damper of the device can lift and lower the viscous damper in the horizontal position, so that the two ends of the viscous damper can be respectively fixed between the eccentric locking mechanism of the piston rod of the viscous damper and the eccentric locking mechanism of the end cover of the viscous damper and keep it horizontal; 4. The actuator of the device and the eccentric locking mechanism of the piston rod of the viscous damper can be adjusted up and down together. At the same time, in conjunction with the height adjustment slide groove on the eccentric locking mechanism of the end cover of the viscous damper, it can meet the requirements of fixing viscous dampers of different outer diameters at different heights and the application of eccentric loads. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0014] Figure 1 It is a schematic diagram of the overall structure of a mechanical performance testing device for a viscous damper; Figure 2 is a schematic diagram of the split structure of the base and the horizontal guide rail; Figure 3 is a schematic diagram of the structural composition of the actuator adjustment support and the actuator seat; Figure 4 is a structural schematic diagram of the eccentric locking mechanism of the piston rod of the viscous damper; Figure 5 is a structural schematic diagram of the horizontal movement lifting mechanism of the viscous damper; Figure 6 is a structural schematic diagram of the eccentric locking mechanism of the fixed end cover of the viscous damper; Figure 7 It is a schematic diagram of the internal structure of the data acquisition controller.

[0015] In the accompanying drawings, the components represented by the reference numerals are listed as follows: 1-base, 2-actuator adjustment support, 3-end baffle, 4-horizontal guide rail, 5-actuator seat, 6-actuator, 7-spoke pressure sensor, 8-viscous damper piston rod eccentric locking mechanism, 9-viscous damper horizontal movement lifting mechanism 10-viscous damper, 11-viscous damper fixed end cover eccentric locking mechanism, 12-horizontal adjustment screw, 13-infrared light emitting sensor, 14-infrared light receiving sensor, 15-accelerometer, 1 6-data acquisition controller, 17-host computer, 18-lifting rod, 21-support plate, 22-top plate, 23-height adjustment slide, 24-limiting groove, 25-height adjustment bite rack, 41-rib, 42-clamping rack, 43-inner guide groove, 51-H-type block structure, 52-height adjustment motor, 53-rotating gear, 81-U-type clamping block, 82-extension connecting plate, 83-viscous damper piston rod mounting mechanism, 84-piston rod clamping plate , 91-rectangular travel box, 92-top cover plate, 93-hydraulic lifting rod, 94-connecting plate, 95-lifting base, 96-travel drive motor, 97-travel wheel, 101-roller travel groove, 111-horizontal adjustment slider, 112-viscous damper end cover clamping plate, 113-roller, 114-lateral wing plate, 115-clamping tooth plate, 116-electric hydraulic cylinder, 117-threaded through hole, 118-height adjustment slide groove, 121-horizontal adjustment drive Motor, 161-base plate, 162-battery, 163-control circuit board, 164-single chip microcomputer, 165-power module, 166-analog-to-digital conversion module, 167-constant current source drive module, 168-communication module, 169-communication interface, 170-digital-to-analog conversion module, 171-analog electrical signal acquisition interface, 172-relay, 211-shaft perforation, 501-rotation groove, 502-actuator mounting hole, 811-flange connection plate, DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] like Figure 1-2As shown, the viscous damper mechanical property detection device includes a base 1, an actuator adjustment support 2, an end baffle 3, a horizontal guide rail 4, an actuator base 5, an actuator 6, a spoke pressure sensor 7, an eccentric locking mechanism 8 for a piston rod of a viscous damper, a horizontal movement lifting mechanism 9 for a viscous damper, an eccentric locking mechanism 11 for a fixed end cover of a viscous damper, a displacement sensor, an accelerometer 15, a data acquisition controller 16 and a host computer 17. The actuator adjustment support 2 and the end baffle 3 are respectively fixed to the two ends of the base 1, the horizontal guide rail 4 is fixed between the actuator adjustment support 2 and the end baffle 3 and is arranged in pairs, and the actuator 6 is fixed In the actuator seat 5, an automatic lifting adjustment mechanism is fixed on the actuator seat 5, and the actuator seat 5 can slide up and down along the actuator adjustment support 2. The piston rod of the actuator 6 is threadedly connected to the spoke pressure sensor 7, and the spoke pressure sensor 7 is connected to the viscous damper piston rod eccentric locking mechanism 8 by bolts. A viscous damper 10 is horizontally fixed between the viscous damper piston rod eccentric locking mechanism 8 and the viscous damper end cover eccentric locking mechanism 11. A viscous damper horizontal movement lifting mechanism 9 is arranged below the viscous damper 10, and the viscous damper horizontal movement lifting mechanism 9 can move horizontally along the horizontal guide rail 4. The lifting height of the viscous damper 10 is adjusted by automatic lifting. A horizontal adjustment screw 12 is arranged between the actuator adjustment support 2 and the end baffle 3. The horizontal adjustment screw 12 is fixedly connected to the rotating shaft of the horizontal adjustment drive motor 121 fixed on the actuator adjustment support. The viscous damper fixed end cover eccentric locking mechanism 11 is threadedly connected to the horizontal adjustment screw 12 and can slide horizontally along the horizontal guide rail when the horizontal adjustment screw 12 rotates. The viscous damper fixed end cover eccentric locking mechanism 11 is provided with a lateral locking mechanism. After the viscous damper end cover eccentric locking mechanism 11 is adjusted to a suitable position, the lateral locking mechanism is tightly locked to the horizontal guide rail. On the horizontal guide rail 4, the infrared light emitting sensor 13 of the displacement sensor is fixed on the lifting rod 18, the infrared light receiving sensor 14 of the displacement sensor is fixed on the eccentric locking mechanism 8 of the piston rod of the viscous damper, and the accelerometer 15 is fixed on the eccentric locking mechanism 8 of the piston rod of the viscous damper. The actuator 6, the actuator seat 5, the spoke pressure sensor 7, the horizontal adjustment drive motor 121, the horizontal movement lifting mechanism 9 of the viscous damper, the eccentric locking mechanism 11 of the fixed end cover of the viscous damper, the displacement sensor and the accelerometer 15 are all connected to the data acquisition controller 16, and the data acquisition controller 16 is connected to the host computer 17.

[0018] The horizontal guide rail 4 is an I-shaped guide rail, and a rib 41 is welded in the outer guide rail groove of the horizontal guide rail 4. A clamping rack 42 is fixed to the outer side of the upper wing plate of the horizontal guide rail. The eccentric locking mechanism 11 of the fixed end cover of the viscous damper is clamped and locked on the clamping rack 42, and two roller walking grooves 101 are opened on the base.

[0019] like Figure 3 As shown, the actuator adjustment support 2 includes a support plate 21 and a top plate 22. The support plate 21 is provided with a height adjustment slot 23. A shaft through-hole 211 is provided below the height adjustment slot 23. The shaft of the horizontal adjustment drive motor 121 passes through the shaft through-hole 211 and is fixedly connected to the horizontal adjustment lead screw 12. Limiting slots 24 are provided on the groove walls on both sides of the height adjustment slot 23. A height adjustment meshing rack 25 is fixed on the groove wall of the limiting slot 24. The actuator seat 5 is an H-shaped block structure 51. An actuator mounting hole 502 is provided at the center of the actuator seat 5. The actuator 6 is fixed in the actuator mounting hole 502, and rotating grooves 501 are opened on both sides of the actuator seat 6, and a rotating gear 53 is hinged in the rotating groove. A height adjustment motor 52 is fixed on the outer groove plate of the rotating groove, and the rotating shaft of the height adjustment motor 52 is fixedly connected to the rotating gear 53. The groove plates on both sides of the rotating groove 501 are clamped on the outer walls of the groove plates on both sides of the rotating groove of the support plate. The rotating groove 501 is aligned with the limit groove 24 and the rotating gear 53 is meshed with the height adjustment meshing rack 25, and the height adjustment motor 52 is connected to the data acquisition controller 16.

[0020] like Figure 4 As shown, the viscous damper piston rod eccentric locking mechanism 8 includes a U-shaped clamp block 81, an extended connecting plate 82 and a viscous damper piston rod mounting mechanism 83, the end of the U-shaped clamp block 81 is fixed with a flange connecting plate 811, the spoke pressure sensor 7 is flange-connected to the flange connecting plate 811, one end of the extended connecting plate 82 is inserted into the U-shaped groove of the U-shaped clamp block and fixed to the U-shaped clamp block by bolts, the other end of the extended connecting plate 82 is clamped into the top clamping groove of the viscous damper piston rod mounting mechanism 83 and fixed to the viscous damper piston rod mounting mechanism 83 by bolts, the bottom of the viscous damper piston rod mounting mechanism 83 is integrally connected with a piston rod clamping plate 84, and a bolt locking hole is opened on the piston rod clamping plate 84, and the infrared light receiving sensor 14 and the accelerometer 15 of the displacement sensor are fixed on the top surface of the extended connecting plate 82.

[0021] like Figure 5As shown, the viscous damper horizontal movement lifting mechanism 9 includes a lifting base 95, a connecting plate 94, a hydraulic lifting rod 93 and a horizontal movement mechanism. The connecting plate is horizontally arranged, and the lifting base is respectively fixed to the two ends of the connecting plate, and the connecting plate 94 is fixed to the top of the hydraulic lifting rod 93. The hydraulic lifting rod is fixed to the horizontal movement mechanism. The horizontal movement mechanism includes a rectangular travel box 91 with openings at both ends. The horizontal adjustment screw 12 passes through the cavity of the rectangular travel box 91. The hydraulic lifting rod 93 is fixed to the top cover plate 92 of the rectangular travel box. A pair of travel wheels 97 are fixed on both sides of the rectangular travel box 91. The travel wheels can move along the inner guide rail groove 43 of the horizontal guide rail 4. A travel drive motor 96 is fixed on one of the travel wheels. The rotating shaft of the travel drive motor 96 is fixedly connected to the travel wheel. The rectangular travel box 91 moves horizontally to the left or right along the horizontal guide rail when the travel drive motor rotates forward or reversely. The travel drive motor 96 is connected to the data acquisition controller 16.

[0022] like Figure 6 As shown, the viscous damper fixed end cover eccentric locking mechanism 11 includes a horizontal adjustment slider 111, a pair of viscous damper end cover clamping plates 112 are fixed on the top of the horizontal adjustment slider 111, a height adjustment slide groove 118 is opened on the viscous damper end cover clamping plate 112, a threaded through hole 117 is opened at the center of the horizontal adjustment slider 111, the horizontal adjustment lead screw 12 passes through the threaded through hole 117 and is threadedly connected to the horizontal adjustment slider, and two rows of rollers 113 are fixed at the bottom of the horizontal adjustment slider 111, and two rollers are arranged in each row. Lateral wing plates 114 extend outwardly from both sides of the section slider 111, and an electric hydraulic cylinder 116 is fixed to the outer side of the lateral wing plates 114. A clamping tooth plate 115 is arranged on the inner side of the lateral wing plates 114, and the clamping tooth plate 115 is fixed to the piston rod of the electric hydraulic cylinder 116. The lateral wing plates 114, the electric hydraulic cylinder 116 and the clamping tooth plate 115 constitute a lateral locking mechanism. The clamping tooth plate 115 is engaged with the engaging rack 42 of the horizontal guide rail under the pressing action of the electric hydraulic cylinder 116, and the electric hydraulic cylinder 116 is connected to the data acquisition controller 16.

[0023] like Figure 7As shown, the data acquisition controller 16 includes a packaging shell and a base plate 161, on which a battery 162, a control circuit board 163 and a plurality of relays 172 are fixed, on which a single-chip microcomputer 164, a power module 165, an analog-to-digital conversion module 166, a digital-to-analog conversion module 170, a constant current source drive module 167 and a communication module 168 are fixed, the battery is connected to the single-chip microcomputer through the power module, and an analog electrical signal acquisition interface 171 and a communication interface 169 are fixed on the control circuit board. The port 171 is connected to the single-chip microcomputer 164 through the analog-to-digital conversion module 166, the relay 172 is connected to the single-chip microcomputer 164 through the digital-to-analog conversion module 170, the communication interface 169 is connected to the single-chip microcomputer 164 through the communication module 168, the actuator 6, the actuator seat 5, the horizontal adjustment drive motor 121, the viscous damper horizontal movement lifting mechanism 9, and the viscous damper fixed end cover eccentric locking mechanism 11 are all connected to the relay, and the spoke pressure sensor 7, the displacement sensor and the accelerometer 15 are all connected to the analog electrical signal acquisition interface 171.

[0024] In this embodiment, the processing chip uses a 51 series single-chip microcomputer, the power module uses an AMS1117-3.3V power chip, the analog-to-digital conversion module uses an ADC0832 analog-to-digital conversion chip, the digital-to-analog conversion module uses a DAC0864 digital-to-analog conversion chip, the relay uses a J5V-1 micro relay, and the constant current source drive module uses an SM2082 constant current source drive chip.

[0025] A specific application of this device is: (1) Installation of the viscous damper: hoist the viscous damper with detection 10 onto the two lifting bases 95 of the horizontal movable lifting mechanism 9 of the viscous damper, then adjust the water level of the horizontal movable lifting mechanism 9 of the viscous damper. When the travel drive motor 96 rotates forward or reverse, the rectangular travel box 91 will move the supported viscous damper 10 to the right or left along the horizontal guide rail until the piston rod of the viscous damper is located directly above or directly below the piston rod clamping plate 84 of the viscous damper piston rod eccentric locking mechanism 8. Then adjust the height of the actuator seat 5 so that the piston rod of the viscous damper is inserted into the piston rod clamping plate 84. Adjust the horizontal position of the eccentric locking mechanism 11 of the fixed end cover of the viscous damper. The horizontal adjustment screw is adjusted on the horizontal adjustment drive motor. The viscous damper 10 is driven by the machine to rotate forward or reverse, and the horizontal adjustment slider of the eccentric locking mechanism 11 of the fixed end cover of the viscous damper is adjusted to slide left or right along the horizontal guide rail under the constraints of the lateral wing plate and the roller until the clamping plate 112 of the end cover of the viscous damper is stuck on the fixed rod of the end cover of the viscous damper. At this time, the piston rod of the viscous damper 10 and the fixed rod on the end cover are fixed respectively, and the height of the hydraulic lifting rod 93 is adjusted to make the roll support base disengage from the viscous damper, and then the electric hydraulic cylinder 116 is driven to extend, so that the clamping tooth plate 115 of the lateral locking mechanism is engaged with the engaging rack 42 of the horizontal guide rail to form a lateral locking state, so as to facilitate the adjustment of the eccentric locking mechanism 11 of the fixed end cover of the viscous damper to apply a reaction force to the viscous damper.

[0026] (2) Mechanical property test of viscous damper: static load and periodic load are applied by actuator. The infrared light receiving sensor of displacement sensor will receive the distance of infrared light emitting sensor. When viscous damper is under tension or compression, the displacement sensor will measure the distance variable between infrared light receiving sensor and infrared light emitting sensor, which is the displacement of viscous damper. Accelerometer is used to detect the force and movement direction of viscous damper. The displacement of viscous damper is transmitted to host computer through data acquisition controller. The spoke pressure sensor will collect the tension or pressure of viscous damper and transmit it to host computer through data acquisition controller. The host computer generates load-displacement curve of viscous damper. Tension or pressure is continuously applied to viscous damper by actuator, and the ultimate load when viscous damper is destroyed is collected, so as to complete the mechanical property test of viscous damper.

[0027] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

Claims

1. A mechanical performance testing device for a viscous damper, characterized in that: The actuator comprises a base, an actuator adjustment support, an end baffle, a horizontal guide rail, an actuator base, an actuator, a spoke pressure sensor, an eccentric locking mechanism of a viscous damper piston rod, a horizontal movement lifting mechanism of a viscous damper, an eccentric locking mechanism of a fixed end cover of a viscous damper, a displacement sensor, an accelerometer, a data acquisition controller and a host computer. The actuator adjustment support and the end baffle are respectively fixed to the two ends of the base, the horizontal guide rail is fixed between the actuator adjustment support and the end baffle and is arranged in pairs, the actuator is fixed in the actuator base, and the actuator base is fixed The invention discloses an automatic lifting and lowering adjustment mechanism, wherein the actuator seat can slide up and down along the actuator adjustment support, the piston rod of the actuator is threadedly connected to the spoke-type pressure sensor, and the spoke-type pressure sensor is connected to the eccentric locking mechanism of the piston rod of the viscous damper by bolts, and a viscous damper is horizontally fixed between the eccentric locking mechanism of the piston rod of the viscous damper and the eccentric locking mechanism of the end cover of the viscous damper, and a viscous damper horizontal movement lifting mechanism is arranged under the viscous damper, and the viscous damper horizontal movement lifting mechanism can move horizontally along the horizontal guide rail and adjust the automatic lifting mechanism. The lifting height of the viscous damper is adjusted by lowering the actuator, a horizontal adjustment screw is arranged between the actuator adjustment support and the end baffle, the horizontal adjustment screw is fixedly connected to the rotating shaft of the horizontal adjustment drive motor fixed on the actuator adjustment support, the viscous damper fixed end cover eccentric locking mechanism is threadedly connected to the horizontal adjustment screw and can slide horizontally along the horizontal guide rail when the horizontal adjustment screw rotates, and the viscous damper fixed end cover eccentric locking mechanism is provided with a lateral locking mechanism, and the lateral locking mechanism is locked after the viscous damper end cover eccentric locking mechanism is adjusted to a suitable position. On the horizontal guide rail, the infrared light emitting sensor of the displacement sensor is fixed on the lifting rod, the infrared light receiving sensor of the displacement sensor is fixed on the eccentric locking mechanism of the piston rod of the viscous damper, and the accelerometer is fixed on the eccentric locking mechanism of the piston rod of the viscous damper. The actuator, the actuator seat, the spoke-type pressure sensor, the horizontal adjustment drive motor, the horizontal movement lifting mechanism of the viscous damper, the eccentric locking mechanism of the fixed end cover of the viscous damper, the displacement sensor and the accelerometer are all connected to the data acquisition controller, and the data acquisition controller is connected to the host computer.

2. The viscous damper mechanical performance detection device according to claim 1, characterized in that: The horizontal guide rail is an I-shaped guide rail, ribs are welded in the outer guide rail groove of the horizontal guide rail, a clamping rack is fixed on the outer side of the upper wing plate of the horizontal guide rail, the eccentric locking mechanism of the fixed end cover of the viscous damper is clamped and locked on the clamping rack, and two roller walking grooves are opened on the base.

3. The viscous damper mechanical performance detection device according to claim 2, characterized in that: The actuator adjustment support includes a support plate and a top plate, a height adjustment slot is opened on the support plate, a rotating shaft through-hole is opened below the height adjustment slot, the rotating shaft of the horizontal adjustment drive motor passes through the rotating shaft through-hole and is fixedly connected to the horizontal adjustment lead screw, limiting slots are opened on the slot walls on both sides of the height adjustment slot, and a height adjustment meshing rack is fixed on the slot walls of the limiting slot. The actuator seat is an H-shaped block structure, and an actuator mounting hole is opened at the center of the actuator seat. The actuator is fixed in the actuator mounting hole, rotating grooves are opened on both sides of the actuator, and a rotating gear is hinged in the rotating groove. A height adjustment motor is fixed on the outer slot plate of the rotating groove, and the rotating shaft of the height adjustment motor is fixedly connected to the rotating gear. The slot plates on both sides of the rotating groove are clamped on the outer wall of the support plate, the rotating groove is aligned with the limiting slot, and the rotating gear is meshed with the height adjustment meshing rack, and the height adjustment motor is connected to the data acquisition controller.

4. The viscous damper mechanical performance detection device according to claim 3, characterized in that: The viscous damper piston rod eccentric locking mechanism includes a U-shaped clamp, an extended connecting plate and a viscous damper piston rod mounting mechanism, a flange connecting plate is fixed at the end of the U-shaped clamp, the spoke-type pressure sensor is flange-connected to the flange connecting plate, one end of the extended connecting plate is inserted into the U-shaped groove of the U-shaped clamp and fixed to the U-shaped clamp by bolts, the other end of the extended connecting plate is clamped into the top clamping groove of the viscous damper piston rod mounting mechanism and fixed to the viscous damper piston rod mounting mechanism by bolts, the bottom of the viscous damper piston rod mounting mechanism is integrally connected with a piston rod clamping plate, a bolt locking hole is opened on the piston rod clamping plate, and the infrared light receiving sensor and accelerometer of the displacement sensor are fixed on the top surface of the extended connecting plate.

5. The viscous damper mechanical performance detection device according to claim 1 or 4, characterized in that: The horizontal movement lifting mechanism of the viscous damper includes a lifting base, a connecting plate, a hydraulic lifting rod and a horizontal movement mechanism. The connecting plate is horizontally arranged, and the lifting base is respectively fixed to the two ends of the connecting plate, and the connecting plate is fixed to the top of the hydraulic lifting rod. The hydraulic lifting rod is fixed to the horizontal movement mechanism. The horizontal movement mechanism includes a rectangular travel box with openings at both ends, and the horizontal adjustment screw passes through the cavity of the rectangular travel box. The hydraulic lifting rod is fixed to the top cover plate of the rectangular travel box. A pair of travel wheels are fixed on both sides of the rectangular travel box, and a travel drive motor is fixed on one of the travel wheels. The rotating shaft of the travel drive motor is fixedly connected to the travel wheel. The rectangular travel box moves horizontally to the left or right along the horizontal guide rail when the travel drive motor rotates forward or reversely, and the travel drive motor is connected to the data acquisition controller.

6. The viscous damper mechanical performance testing device according to claim 5, characterized in that: The eccentric locking mechanism of the fixed end cover of the viscous damper includes a horizontal adjustment slider, a pair of viscous damper end cover clamping plates are fixed on the top of the horizontal adjustment slider, a height adjustment slide groove is opened on the viscous damper end cover clamping plate, a threaded through hole is opened at the center of the horizontal adjustment slider, the horizontal adjustment screw passes through the threaded through hole and is threadedly connected to the horizontal adjustment slider, two rows of rollers are fixed to the bottom of the horizontal adjustment slider, two rollers are arranged in each row, lateral wing plates extend outward on both sides of the horizontal adjustment slider, an electric hydraulic cylinder is fixed on the outer side of the lateral wing plate, a clamping tooth plate is arranged on the inner side of the lateral wing plate, the clamping tooth plate is fixed on the piston rod of the electric hydraulic cylinder, the clamping tooth plate is engaged with the engaging rack of the horizontal guide rail under the pressing action of the electric hydraulic cylinder, and the electric hydraulic cylinder is connected to the data acquisition controller.

7. The viscous damper mechanical performance testing device according to claim 6, characterized in that: The data acquisition controller includes a packaging shell and a base plate, on which a battery, a control circuit board and several relays are fixed, on which a single-chip microcomputer, a power module, an analog-to-digital conversion module, a digital-to-analog conversion module, a constant current source drive module and a communication module are fixed, the battery is connected to the single-chip microcomputer through the power module, an analog electrical signal acquisition interface and a communication interface are fixed on the control circuit board, the analog electrical signal acquisition interface is connected to the single-chip microcomputer through the analog-to-digital conversion module, the relay is connected to the single-chip microcomputer through the digital-to-analog conversion module, the communication interface is connected to the single-chip microcomputer through the communication module, the actuator, the actuator adjustment support, the horizontal adjustment drive motor, the viscous damper horizontal movement lifting mechanism, and the viscous damper fixed end cover eccentric locking mechanism are all connected to the relay, and the spoke pressure sensor, displacement sensor and accelerometer are all connected to the analog electrical signal acquisition interface.

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