131 results about "Viscous damping" patented technology

The invention relates to the technical field of hydrodynamic analysis of ship and ocean engineering, in particular to a method, a device and equipment for predicting an additional mass coefficient and a viscous damping coefficient of multi-degree-of-freedom movement of a floating body, a storage medium and a computer program product. The method comprises the following steps: performing orthogonal two-dimensional slicing on each plane to generate flow field sampling points based on a floating body three-dimensional geometric model, draft and motion parameters; sampling point coordinates, initial flow field data, geometric contour discrete points, boundary conditions and motion parameters are coded into high-dimensional feature vectors through a learnable matrix, and input matrixes of all planes are constructed; predicting two-dimensional flow field data by adopting a Transform module, fusing multi-plane data through a graph attention network to generate a redundant three-dimensional flow field, and interpolating and complementing object plane missing points; the water pressure and the viscous shear force are divided along the surface area of the floating body, the inertia term and the damping term are decomposed in combination with the single-mode motion equation, the target additional mass coefficient and the target viscous damping coefficient are determined, and the accuracy of floating body hydrodynamic calculation is improved.

The invention belongs to the technical field of vibration control and isolation, and discloses a stepless self-adaptive large-range load quasi-zero stiffness vibration isolation platform and a use method.The use method comprises the steps that the load and motion state is monitored in real time through a stepless variable load vibration isolation supporting leg binding force sensor and an acceleration sensor, and after being processed by a signal conditioning module, the load and motion state is output; the passive grading quasi-zero stiffness system and the electromagnetic constant force module are regulated and controlled by the semi-active controller, so that stepless self-adaptive adjustment of a large-range load is realized; the passive grading system provides stepped load bearing, the electromagnetic constant-force module realizes stepless adjustment in a hierarchy, and the passive grading system and the electromagnetic constant-force module are combined to cover a wide-area load demand; the linear bearing reduces friction, viscous damping consumes vibration energy, the quasi-zero stiffness vibration isolation characteristic can be effectively exerted, the vibration isolation effect is improved, the application range is widened, and the vibration isolation device is suitable for vibration isolation in various load scenes.

The invention discloses an industrial mechanical arm joint rigidity online identification method based on an optimal excitation track, and belongs to the field of mechanical arm parameter identification. The method comprises the following steps: firstly, establishing a mechanical arm rigid-flexible coupling dynamic model, and constructing a linear regression equation taking joint rigidity and viscous damping as parameters; a Fisher information matrix is derived based on the regression model to quantify the amount of information of the excitation trajectory. And further, parameterizing the excitation trajectory by using finite term Fourier series, and solving the optimal excitation trajectory by using a scalar index of a Fisher information matrix and a sustainable excitation condition as optimization targets under the condition of meeting joint motion constraints. And finally, the mechanical arm is driven to execute the track, motion data are collected and input into parameter identification algorithms such as unscented Kalman filtering and recursive least square, and online and high-precision estimation of the time-varying joint stiffness is achieved. According to the method, the excitation track is designed directly from the information theory, and the precision, robustness and real-time performance of joint rigidity identification are effectively improved.

The invention belongs to the technical field of damping walls, and particularly relates to a novel high-performance viscous damping wall which comprises a channel steel box used for containing viscous liquid and arranged between an upper damper connecting wall pier and a lower damper connecting wall pier and a damping body vertically placed in the channel steel box and connected with the damper connecting wall piers. A plurality of metal plates are arranged in the vertical direction of the channel steel box in an array mode, and anti-deformation mechanisms movably connected with the two ends of the bottoms of the metal plates in a sleeving mode are arranged on the side faces of the two ends of the inner bottom of the channel steel box. According to the novel high-performance viscous damping wall, through the arrangement of the anti-deformation mechanism, when the damping wall is subjected to vibration in different directions or the instantaneous vibration deformation force is too large, the metal plate can elastically displace in time in the thickness direction of the channel steel box, and the problem that the metal plate is in rigid contact with the damping body and deforms is solved.

The utility model discloses a kind of CNG pipe bundle type container shockproof fixed connection structure, it is related to pipe bundle type container technical field, including pipe bundle type container body, the lower surface inside the pipe bundle type container body is fixedly connected with two first fixed seat, the top of two the first fixed seat is evenly provided with second fixed seat, the top of two the second fixed seat is fixedly connected with third fixed seat, the upper surface of two the first fixed seat, the upper and lower two surfaces of two the second fixed seat and the lower surface of two third fixed seat are all set with sliding slot, the inside of each sliding slot is slidably provided with arc clamping block. The utility model passes through the sliding of piston plate in sealing cavity, utilizes the viscous damping force generated by the flow of hydraulic oil through fine hole, cooperates with the elastic reset of spring, can effectively absorb the impact force such as jolt, sudden braking in vehicle driving, to significantly reduce the fatigue crack and sealing element failure risk of CNG gas collecting bottle.

The utility model discloses a kind of viscous damping wall devices for bridge, belong to damping equipment technical field, comprising: movable member is movably inserted in damping wall, damping cavity is provided in the damping wall, damping liquid is provided in the damping cavity, the movable member sliding connection with damping cavity can be with damping liquid and shear motion occurs, the movable member includes the fixed connection of fixed part with bridge superstructure, the fixed part bottom end sliding connection has the plugboard connecting piece that can be along bridge transverse sliding, plugboard connecting piece is fixedly connected with plugboard, the plugboard sliding connection is in damping cavity.The utility model is converted into heat energy dissipation by the internal friction effect between fluid molecules, and the mechanical vibration energy of structure is continuously converted into heat energy dissipation, to effectively reduce the dynamic response of structure.

The invention provides a viscous damping device based on efficient heat dissipation, and belongs to the field of building anti-seismic equipment. The damper comprises a viscous damping assembly, an upper gusset plate and a lower gusset plate, the viscous damping assembly comprises a cylinder body, a piston rod, two bushings and a piston, the upper gusset plate is hinged to the end, located outside the cylinder body, of the piston rod, an upper mounting plate is fixedly mounted at the top of the upper gusset plate, and a connecting body is fixedly mounted at the end, away from the upper gusset plate, of the cylinder body; the lower gusset plate is hinged to the end, away from the cylinder body, of the connecting body, a plurality of heat conduction rods distributed in an annular array are slidably installed on the piston in a penetrating mode, and a plurality of natural graphite flakes are fixedly installed on the positions, close to the two ends, of the outer walls of the heat conduction rods. The viscous damping device based on efficient heat dissipation has the advantages that an efficient passive heat dissipation link is arranged in the cylinder body, active one-way auxiliary heat dissipation can be achieved, a heat dissipation fin convenient disassembly and maintenance structure is arranged, and the telescopic amplitude of the piston rod can be accurately recorded.

The utility model discloses a turbo type viscous damper, which relates to the technical field of building construction, and comprises an oil cylinder structure and turbo type piston structures, a piston rod is horizontally arranged in the oil cylinder structure, and the turbo type piston structures are arranged at one end of the piston rod and are provided with two groups. According to the turbo type viscous damper, two sets of turbo type piston structures are installed at one end of the piston rod, the structural arrangement of two sets of turbine blades is utilized, and a sealing ring is installed on the surface of a supporting ring in a matched mode; while the high-damping bearing provides axial rotation activity for the whole turbo type piston structure, sufficient structural viscous damping performance can be provided for the whole device through cooperative use of the structures, and interference protection of damping buffering can be further provided for the whole device through structural arrangement of the pressure accumulation structure and the control valve; and the stability and the service life of the device are ensured.

The utility model relates to the technical field of anti-vibration, and discloses a high-damping anti-vibration seat of integrated circuit equipment, which comprises an anti-vibration seat and a base. According to the high-damping anti-vibration seat of the integrated circuit equipment, through the arrangement of the supporting seat, the base, the damping mechanism and the elastic mechanism, when the integrated circuit equipment is vibrated, the acting force borne by the supporting seat can be transmitted to the piston rod, the piston rod is forced to vibrate, and magnetorheological fluid is pushed to flow in the annular cavity; a magnetic field generated by the permanent magnet array enables magnetorheological fluid particles to form a chain-shaped structure, fluid shear stress is greatly increased, nonlinear viscous resistance is generated, meanwhile, vertical reciprocating motion of the piston rod cuts magnetic induction lines of the permanent magnet array, an eddy current effect is triggered, reverse electromagnetic damping force is generated, and the damping effect is improved. Therefore, magnetic circuit cutting and fluid extrusion are achieved while movement of the piston rod is achieved, a composite energy dissipation mechanism of electromagnetic damping and viscous damping is formed, and the energy dissipation efficiency and the resonance peak suppression efficiency are remarkably improved.

The invention relates to the technical field of constructional engineering, in particular to a self-adaptive viscous damping vibration isolation device for the bottom of a music hall base, comprising a floating bearing layer, a damping adjusting layer and a base connecting layer which are sequentially arranged from top to bottom from the bottom of a building; through the synergistic effect of the floating bearing layer, the damping adjusting layer and the base connecting layer, self-adaptive vibration isolation of music hall base vibration is achieved, and preliminary buffering is provided for vibration through sliding fit of the floating bearing layer; in the damping adjusting layer, a damping cylinder can automatically adjust damping according to the magnitude of vibration through cooperation of inertia of a plugging piece and an elastic piece without additional control, low damping is kept during small vibration to avoid excessive constraint, damping is increased during large vibration to efficiently isolate vibration, the adaptability and accuracy of vibration isolation are ensured, electric drive or a complex control system is not needed, and the cost is reduced. The structure is reliable, maintenance is easy and convenient, continuous and stable work can be achieved under different vibration working conditions, and reliable vibration isolation guarantee is provided for creating a stable acoustic environment for a music hall.

The anti-seismic drawing equipment based on liquid buffering comprises a drawing device, a working chamber, a first buffering chamber and a second buffering chamber, the drawing device is arranged in the working chamber, the working chamber is suspended in a buffering solution of the first buffering chamber, and the first buffering chamber is arranged in the second buffering chamber in a vacuum state; the working chamber is suspended in a buffer solution, high-frequency and large-amplitude impact instantaneously generated in the drawing process can be efficiently absorbed by utilizing viscous damping and density characteristics of the liquid, and the anti-seismic effect is improved; meanwhile, the vacuum state of the second buffer chamber can effectively obstruct sound transmission, vibration transmission is reduced in cooperation with the nested structure, the defect that a traditional sound insulation cover cannot obstruct low and medium frequency noise is overcome, the influence of high-strength noise generated by drawing operation on the surrounding environment is greatly reduced, and the sound insulation effect is improved. And the stability and the environmental protection property of equipment operation can be improved while the test precision is ensured.

The present application relates to VR auxiliary debugging and bearing fault positioning technical field, specifically, the present application relates to VR auxiliary debugging and fault positioning method for equipment maintenance, aiming at solving the problem that traditional bearing fault detection adopts visual and static detection, and cannot collect full angle torque dynamic characteristics and large fault positioning error, in the bearing press fitting link, the dynamic torque sensor integrated with the angle encoder is used to collect the instantaneous torque of the full angle, the torque curve of the rotation angle is generated and is associated with the coding storage, when the fault occurs, the measured curve and the standard curve of the same type are called, and are bound to the double virtual bearing model of the VR scene, the virtual driving model is synchronously rotated, the signal module generates the resistance signal according to the torque to control the force feedback data glove, the real rotation feeling is restored by superimposing the viscous damping, the comparison module compares the resistance difference point by point and in the sliding window, if the threshold value is exceeded, the abnormal rotation angle interval is locked, the effective fault area is verified and confirmed through the original point, and the positioning result is output, and the fault positioning precision is improved.

The invention provides a wood structure truss type reinforcing system with composite energy consumption and self-resetting, which belongs to the technical field of ancient building wood structure reinforcement and comprises a wood upper cross beam, a wood lower cross beam, a viscous damping device, a spring device and a friction energy consumption device. The additional wooden upper cross beam is rigidly connected with the common square columns on the two sides, so that the transverse rigidity and integrity are remarkably enhanced, and weak links at the joints of the bracket set and the common square columns are eliminated; through cooperative work of a plurality of adjustable viscous damping devices, spring devices and friction energy dissipation devices, the energy dissipation capacity is improved in a grading mode, and meanwhile the swinging and self-resetting functions of the wooden column are reserved.

The application discloses a method for calculating alcohol concentration based on secondary compensation, and relates to the technical field of alcohol concentration detection. The application innovatively introduces fluid viscous damping characteristics as a third measurement dimension, uses the driving gain parameter of the Coriolis force mass flowmeter to inversely calculate the actual viscosity of the fluid in real time, and breaks the single measurement limitation of the traditional density and temperature. Meanwhile, the physical characteristics of the solid in the brewed wine are extremely sensitive to the viscosity, the dry extract content in the wine is accurately inversely estimated based on the viscosity deviation, the density virtual high value caused by the solid is further quantitatively calculated, and the measured density is subtractively corrected. Through the secondary compensation mechanism, the interference of the solid is effectively removed, and the real density of the pure base liquor is restored.

The invention discloses a waterproof steel spring vibration isolator inner sleeve with a high damping ratio and a design method, and particularly relates to the technical field of vibration isolators, the inner sleeve comprises an inner top plate, a bottom plate, a spring and a damping agent, and is characterized in that an inner sleeve heightening rod is arranged in a vertical space on the inner side of the spring in a middle shaft area of the inner sleeve; the upper end of the inner cylinder heightening rod is welded to the inner top plate, and the lower end of the inner cylinder heightening rod is inserted into a lower blocking pipe of the bottom plate filled with the damping agent, so that a built-in piston-oil cylinder type viscous damping cavity is formed.

The invention relates to the technical field of knee joint exoskeleton devices, in particular to a viscous damping knee joint exoskeleton device. The knee joint assembly comprises a first rotating assembly and a second rotating assembly which are rotationally connected; the pair of leg connecting assemblies are connected with the first rotating assembly and the second rotating assembly correspondingly, and the pair of leg connecting assemblies are used for being connected with thighs and shanks on the same side of the user correspondingly; the viscous fluid damper comprises a first connecting piece and a second connecting piece which rotate relatively, and the first connecting piece is connected with the first rotating assembly; and the clutch device is arranged between the second connecting piece and the second rotating assembly, and the clutch device is used for switching the rotating coupling state of the second connecting piece and the second rotating assembly, so that the second connecting piece and the second rotating assembly are circumferentially coupled or decoupled. The buffering effect can be effectively improved, and joint impact is reduced.

The present application relates to the technical field of material performance testing, and discloses a kind of test methods for evaluating the chemical solvent penetration resistance of reinforced plastic, comprising the following steps: constructing inverse transfer function to compensate platform lag, using historical strain data to predict the starting time of microcrack opening in the next cycle, combining platform inherent delay to calculate instruction sending time, based on stiffness attenuation rate calculated in real time to adaptively adjust the best disturbance frequency, using inverse transfer function to generate modified disturbance instruction and superimposed injection, deducting fluid viscous damping work previously calibrated from single cycle data to obtain effective dissipation density, determining failure end point based on the second derivative change of effective dissipation density sequence.The present application realizes the time synchronization of pressure wave and crack opening through prediction feedforward strategy, maintains deep penetration driving force using adaptive disturbance, and eliminates fluid damping interference through energy decoupling mechanism, improving the authenticity and result accuracy of stress-assisted solvent penetration test.

This invention discloses a construction method for a long-span, low-tower cable-stayed bridge. The method involves installing a variable-stiffness temporary consolidation system, including prestressed steel strands and lockable hydraulic damping cylinders, atop the main pier. Controlled-deflection guide plates are installed on the construction formwork. During typhoon warnings, the guide plates are folded to reduce wind resistance. A servo proportional valve is activated to put the lockable hydraulic damping cylinders into a viscous damping state to dissipate vibration energy. The permanent stay cables are asymmetrically tensioned to actively apply compensating bending moments, achieving coordinated wind resistance. During the semi-floating system transition phase, the prestressed steel strands are cut, and the lockable hydraulic damping cylinders are slowly depressurized, allowing the main beam support reaction force to be smoothly transferred to the movable bearings. Before the mid-span closure, the elevation is precisely adjusted using the slight difference in stroke between the lockable hydraulic damping cylinders on both sides of the main pier. This invention effectively counteracts unbalanced bending moments under extreme wind loads, prevents stress damage to the bottom of the main pier, eliminates stress impacts and abrupt changes in alignment during system transition, and achieves precise closure.

The utility model discloses a horizontal buffer device for a power transmission conductor, which comprises a shock absorber, a horizontal buffer device, a horizontal buffer device, a horizontal buffer device, a horizontal buffer device and a horizontal buffer device, and is characterized in that the shock absorber is internally provided with an accommodating cavity which contains damping fluid; and the first end of the clamping assembly is connected with the shock absorber, and the second end of the clamping assembly is clamped on the power transmission conductor. According to the horizontal buffer device for the power transmission conductor, the vibration absorber is clamped on the power transmission conductor, and the inertia of the damping fluid in the vibration absorber and the viscous damping of the damping fluid are utilized to generate an acting force opposite to the motion of the power transmission conductor, so that the mechanical kinetic energy generated by the power transmission conductor due to horizontal impact can be consumed; therefore, the horizontal buffering and vibration reduction effects are achieved.

The invention discloses a power transmission line unmanned aerial vehicle deicing operation parameter template library generation method and system based on multi-scale mechanical simulation and verification, and the method comprises the steps: S1, obtaining the working condition data of a power transmission line, and constructing a power transmission line basic model; s2, constructing a multi-scale mechanical model of ice; S2.1, determining the equivalent elastic modulus, the equivalent tensile strength and the equivalent fracture energy of the ice related to the environment temperature, the porosity and the loading strain rate; the method comprises the following steps: S1, establishing an unmanned aerial vehicle deicing dynamics simulation model, S2, establishing an ice body macroscopic constitutive model comprehensively considering elastic response, viscous damping and damage evolution, and S3, carrying out deicing dynamics simulation and result analysis: S3.1, establishing the unmanned aerial vehicle deicing dynamics simulation model by adopting a finite element and discrete element coupling method; s3.2, the deicing dynamics simulation model is operated, a simulation result used for evaluating the deicing effect and safety is output, and S4, multi-target optimization is carried out according to the simulation result, and an operation parameter template library is generated. According to the invention, high-fidelity reproduction and parameter optimization of an impact and vibration deicing mechanism are realized.

The invention relates to a variable-frequency hydraulic type inerter vibration double-control system. The variable-frequency hydraulic type inerter vibration double-control system comprises a variable-stiffness unit, a displacement triggering unit, a linkage unit and an inerter damping unit. The variable stiffness unit comprises a spring group comprising a long spring and a short spring; the displacement triggering unit comprises a displacement boundary module and a triggering plate between which a triggering gap is preset; the inerter damping unit comprises a hydraulic cylinder filled with viscous damping liquid and a spiral pipe. A piston is arranged in the hydraulic cylinder in a sliding mode and provided with a damping hole. When the relative displacement is smaller than the trigger gap, only the long spring provides elastic restoring force, and the viscous damping fluid flows through the damping hole and the spiral pipe to generate damping force and inertia force; and when the relative displacement exceeds the triggering gap, the triggering plate drives the short spring to participate in work so as to provide increased elastic restoring force. The rigidity can be automatically switched according to the displacement amplitude, and wind vibration and earthquake double control is achieved.

The utility model discloses a damping type radial spherical plain bearing node which comprises a support base plate, a first lug plate and a second lug plate are fixedly installed at the two ends of the support base plate respectively, and a pin shaft is installed between the first lug plate and the second lug plate. A viscous damping mechanism, a bearing mechanism, a third lug plate and a spring mechanism are sequentially and tightly arranged on the pin shaft in a sleeving manner; the viscous damping mechanism is arranged between the first lug plate and the third lug plate, the bearing mechanism is rotationally installed in a lug hole of the third lug plate, and the spring mechanism is arranged between the second lug plate and the third lug plate. The shock absorption type radial spherical plain bearing node has the advantages of universal rotation, clear stress, simplicity in manufacturing and mounting, small node size and the like while solving the problems of temperature stress and earthquake action, and solves the problems of large temperature stress, large earthquake response, large node size and the like of the existing super-long and large-span space steel structure; wide popularization and application prospects are realized.

The utility model relates to an energy consumption type one-way buffering swing wall. An existing swing wall has the problems that the energy dissipation efficiency is low, the buffering effect on one-way impact is limited, recovery cannot be conducted after impact, and assemblies are difficult to replace and repair. The energy dissipation wall comprises a wall body and further comprises two energy dissipation devices, spaces are reserved on the two sides of the bottom of the wall body respectively, the two energy dissipation devices are arranged in the spaces respectively, and each energy dissipation device comprises a bending energy dissipation damper, a displacement amplification steering mechanism, a viscous energy dissipation mechanism and a limiting mechanism. When a wall body is bent and deformed, the bending energy dissipation damper firstly conducts bending energy dissipation, then vertical displacement is amplified and converted into horizontal movement through the displacement amplification steering mechanism, then the viscous energy dissipation mechanism moves in viscous fluid, viscous damping is generated for energy dissipation, and meanwhile excessive displacement is prevented through the limiting mechanism. The energy dissipation efficiency is high, a one-way buffering mechanism is arranged, recovery can be conducted after impact, and the assembly is easy to replace and repair.

The invention belongs to the technical field of steel structure floor design, and particularly relates to a transient response analysis method for converting structural damping into equivalent viscous damping in a full frequency band, which comprises the following steps of: 1, establishing a finite element model of a structure, and outputting characteristic matrixes of the structure, including a stiffness matrix and a mass matrix; 2, performing modal analysis based on the finite element model of the structure to obtain a modal matrix of the structure; 3, calculating a generalized stiffness matrix and a generalized mass matrix of the structure based on the stiffness matrix, the mass matrix and the modal matrix; step 4, calculating viscous damping of each order vibration mode of the structure based on the generalized stiffness matrix; 5, calculating the transient response of each order vibration mode of the structure based on the generalized stiffness matrix, the generalized mass matrix and the viscous damping of each order vibration mode of the structure; and 6, converting the transient response of each order vibration mode of the structure to a physical coordinate to obtain the transient response of the structure at each moment.

The invention relates to a variable-stiffness variable-damping self-resetting viscous damper which comprises a piston rod. The first viscous damping structure, the second viscous damping structure and the self-resetting structure are arranged. Small viscous damping force is provided when viscous fluid flows through the multiple second damping holes in the second piston and the annular groove, and large viscous damping force is provided when the viscous fluid only passes through the multiple second damping holes after the second piston makes contact with the inner wall of the second cylinder body through the annular groove. According to the self-resetting structure, the size of the viscous damping force can be changed according to the size of displacement of the building structure in cooperation with the viscous damping force provided by the first viscous damping structure, comfort control and structural safety dynamic response control are both considered, meanwhile, the building structure can be self-reset after an earthquake through the self-resetting structure, and in addition, the self-resetting effect is good. The rigidity, the friction energy consumption and the reset capacity can be changed according to different levels of vibration / vibration control requirements.

The present invention discloses an amplification device for an adjustable viscous damping wall, which relates to the field of viscous damping walls. It includes a housing, a sliding plate, an upper connecting plate, a pin shaft one, a pin shaft two, and silicone oil. The upper connecting plate is connected to the engineering wall body. The upper connecting plate receives an external force and transmits the force to the sliding plate. The pin shaft one is rotatably connected between the convex part of the connecting plate and the sliding plate. The external force applied to the upper connecting plate is F1. The pin shaft two serves as the rotation axis of the sliding plate, and the distance L1 from its center to the top of the upper connecting plate is the lever arm length of the force F1; F2 is the force that the sliding plate is passively subjected to due to the action of the upper connecting plate, that is, the viscous force. The pin shaft two serves as the rotation axis of the sliding plate, and the distance L2 from its center to the middle position where the sliding plate is inserted into the silicone oil is the lever arm length of the sliding plate. According to the principle of moment balance, F1*L1 = F2*L2. Since L1 < L2, so F1 > F2. Therefore, by controlling the length ratio of L1 to L2, the amplification of the viscous force can be effectively achieved and applied to the structure.

A method for solving the thermal-mechanical coupling multi-scale dynamics of flexible multi-body systems with clearance hinges, the technical field of space deployment mechanism dynamics modeling and numerical simulation. The existing solving method is difficult to accurately capture the change of the dynamics response of the space deployment mechanism under the thermal environment. According to the constructed temperature related hinge gap model, the temperature related material parameter model, the normal contact collision model, the partial slip tangential slip friction model, the tangential total friction force, the adhesion zone displacement and slip velocity model, the thermal viscous damping and tangential friction force model, the static friction growth model and the friction heat feedback transient heat conduction model, the thermal-mechanical coupling mechanical dynamics equation is constructed, which is decomposed into slow field equation and fast field equation, and the slow field equation and the fast field equation are solved through BDF2 and Newton-Raphson method and double parameter adaptive multi-scale implicit integration method, and the motion response of the hinge is obtained. The present application is used for obtaining the motion response of the hinge.

The present application belongs to the technical field of vibration control, and particularly relates to a horizontal multi-stage stiffness vibration isolation device with damping, which comprises a bearing plate, a bottom plate, a positive stiffness mechanism and a negative stiffness mechanism arranged between the bearing plate and the bottom plate, and a transmission mechanism for connecting the positive stiffness mechanism and the negative stiffness mechanism in parallel. The positive stiffness mechanism comprises four groups of steel springs and a sliding rod arranged in the steel springs, and the two ends of the sliding rod are connected to the support plate. The negative stiffness mechanism comprises four groups of dampers arranged in an inclined manner, and each damper is composed of a pre-compressed horizontal inclined steel spring, a piston rod, a piston sleeve and a built-in viscous damping liquid, and the two ends of each damper are hinged to a center connecting block and a sliding block. The transmission mechanism is composed of a guide rail, a sliding block, a limiting sliding block and a transmission block, the guide rail and the transmission block are fixed to the bottom plate, and the sliding block and the limiting sliding block are installed on the guide rail. The present application has good low-frequency vibration isolation performance in the case of small horizontal amplitude, and can be designed to have multi-stage stiffness characteristics and be applied to different vibration isolation scenes.

The invention relates to the technical field of earthquake resistance and shock absorption of buildings, in particular to a double-step viscous damping wall which is characterized in that a first cavity, two second cavities and two third cavities are formed in a shell, and the two second cavities are symmetrically distributed at the two opposite ends of the first cavity and communicate with the first cavity; one third chamber is positioned at one end, far away from the first chamber, of one second chamber and is communicated with the corresponding second chamber; the other third chamber is positioned at one end, far away from the first chamber, of the other second chamber and is communicated with the corresponding second chamber; the damping medium is filled in the first cavity, the second cavity and the third cavity; the sliding plate is arranged in the shell, and the sliding plate slides in the first cavity, the second cavity and the third cavity in the length direction of the shell to shear the damping medium to achieve flexible energy consumption. Through smooth switching of the end part of the sliding plate between the first-order position (the second cavity) and the second-order position (the third cavity), the seismic load of different strengths can be adapted.

The utility model relates to an installation operation frame for a viscous damping wall. The installation operation frame comprises supporting legs, stand columns, idler wheels, a cross beam and baffles. The two sides of the stand columns are symmetrically arranged and installed on the supporting legs to form a bottom supporting structure. The cross beam is horizontally arranged between the stand columns, and the baffle is installed on the upper portion of the cross beam and used for clamping the viscous damping wall. And the rollers are mounted at the lower parts of the supporting legs. The viscous damping wall construction can be completed more efficiently, conveniently and accurately.