511 results about "Torsional rigidity" patented technology

The invention discloses a high-precision and high-reliability harmonic reducer tooth profile simulation machining design method, and belongs to the field of precision transmission. A composite cycloid flexible gear tooth profile is designed by establishing a harmonic reducer geometrical relationship model, deducing a flexible gear deformation equation, an accurate rotation angle relationship and a meshing theory based on an envelope method, and a conjugate region and a conjugate tooth profile are calculated by utilizing MATLAB. Actual deformation and theoretical deformation errors of the flexible gear are analyzed through finite element simulation, flexible gear profile parameters are optimized, an actual neutral layer curve is generated, and then a rigid gear profile is enveloped and calculated. The tooth profile design adopts a non-zero inclination angle composite cycloid, so that the meshing area is expanded by more than 30%, and the maximum stress of the flexible gear is reduced by 22.75% in combination with a linear modification method and a finite element modification method. In addition, through a multi-physical field simulation verification system (including static deformation, dynamic contact and fatigue life prediction) and a neural network optimization tooth shape parameter, the transmission performance is remarkably improved. According to the method, the torsional rigidity can be improved by 66%, and the transmission error is controlled within a high-precision range.

The invention provides an aluminum alloy frame multistage collaborative topological optimization method based on Internet of Vehicles big data, which is applied to the technical field of new energy vehicle lightweight and comprises the following steps: fusing subjective and objective weights to generate a comprehensive weight; a compromise planning method is adopted to construct a multiplex topological optimization objective function; performing first-stage frame overall topological optimization through an SIMP variable density method to determine the number of cross beams and spatial layout; and constructing a rigid-flexible coupling virtual prototype to extract an equivalent static load at the joint of the longitudinal / cross beam, and carrying out second-stage section topological optimization in combination with extrusion process constraint to obtain an optimal section configuration of the longitudinal / cross beam. Through a multi-stage optimization framework of data driving weight distribution, overall layout optimization and local section collaborative design, the lightweight rate of the frame is improved by 15%-22%, the bending rigidity and the torsional rigidity are improved by 12%-18% and 10%-15% respectively, and meanwhile the technological feasibility of aluminum alloy extrusion forming is guaranteed.

The invention relates to the technical field of cables, and discloses a weather-proof high-strength tensile aerial insulated cable and a preparation method thereof.The weather-proof high-strength tensile aerial insulated cable comprises a cable conductor, a protection mechanism is arranged outside the cable conductor, a supporting mechanism is arranged inside the protection mechanism, and an outer sheath is connected to the outside of the protection mechanism through a cushioning mechanism; the exterior of the cable conductor is fixedly connected with a force bearing layer, the exterior of the force bearing layer is provided with a repairing layer, the exterior of the repairing layer is fixedly connected with a heat insulation fireproof layer, the cushioning mechanism comprises an elastic rubber layer, and the inner side of the elastic rubber layer is fixedly connected to the exterior of the heat insulation fireproof layer. According to the invention, through the hollow bionic structure with the diaphragm in the core tubular bearing layer, the self weight is greatly reduced, and excellent bending resistance and torsional rigidity are provided at the same time; when the bearing layer is accidentally impacted, the internal diaphragm can effectively prevent longitudinal spreading of microcracks like a firewall, and damage is limited locally.

The invention relates to the technical field of vehicle control, in particular to a torque control method and device of a vehicle transmission system and electronic equipment. The method includes: acquiring actually measured torsion angular velocity; calculating a transmission shaft torsion angular velocity, a transmission shaft torsion angle and a transmission shaft torsion rotating speed based on the actually measured torsion angular velocity; calculating the torque of the transmission shaft based on the pre-obtained equivalent damping coefficient and equivalent torsional rigidity as well as the calculated torsion angular velocity and torsion angle of the transmission shaft; calculating the required torque of the driven shaft based on the calculated torque of the transmission shaft and the pre-obtained load torque of the wheel end; anti-oscillation compensation torque is calculated according to the calculated torsion rotating speed of the transmission shaft and the pre-obtained rotational inertia of the driving end and the equivalent damping coefficient; and superposing the anti-oscillation compensation torque at the previous moment to the calculated required torque of the driven shaft to obtain the compensated required torque of the driven shaft, and outputting the compensated required torque of the driven shaft. The torque can be accurately controlled, and pause or movement is avoided.

The present invention features a micrometer-scale torsion balance device comprising a rigid mass and two or more nanoribbons attached to the rigid mass. The rigid mass may be suspended by the two or more nanoribbons. The two or more nanoribbons may be placed under tensile stress. A local acceleration value may be derived from a torsional stiffness of the two or more nanoribbons. In some embodiments, the rigid mass may comprise silicon. In some embodiments, the two or more nanoribbons may comprise silicon nitride. In some embodiments, the rigid mass may have a polygon shape, the polygon shape having four or more sides. A side of the four or more sides may be longer than all others.

The invention provides a drill string vibration reduction method and device.The method comprises the steps that longitudinal vibration data and torsional vibration data of a target drill string when a vibration reduction tool is tripped into multiple positions are obtained, and the longitudinal vibration data comprise hook load, a mass matrix, a stiffness matrix, a structural damping matrix, a drilling fluid damping effect matrix, a speed vector and an acceleration vector; the torsional vibration data comprises a rotational acceleration vector, a rotational speed vector, a rotational inertia matrix, a torsional rigidity matrix, a torsional structure damping matrix and a torsional drilling fluid damping matrix; the vibration intensity of the whole well section is determined by applying the longitudinal vibration model, the torsional vibration model, the longitudinal vibration data and the torsional vibration data; and according to the vibration intensity of the whole well section, the optimal tripping-in position of the vibration reduction tool is selected from all the positions, the vibration reduction tool is tripped into the optimal tripping-in position, and the vibration reduction process of the target drill column is completed. The reliability of the tripping-in position of the vibration reduction tool can be improved, and then the vibration reduction effect of the drill column can be improved.

The invention provides a rotor blade torsional rigidity testing device, and the device comprises a blade fixing tool which is used for fixing a blade; the circular coding marks are adhered to the two ends of the measured section of the paddle; the loading tray is used for applying force to the paddle; the image acquisition system is arranged above the paddles, and the image acquisition system is used for acquiring images; meanwhile, the invention further provides a rotor blade torsional rigidity testing method, coding marks are pasted on the surfaces of the blades, three-dimensional plane information is fitted through the MPS industrial camera, the torsional rigidity of the blades is obtained through calculation, and the rotor blade torsional rigidity testing method has the advantages of being easy to install, high in precision and high in stability.

The invention relates to the technical field of automobile part structures, in particular to a cabin beam structure, a cabin assembly and an automobile. Comprising a cross beam body which is of a plate-shaped structure arranged in the Y direction, and lap joint faces are arranged at the two ends of the cross beam body; the lap joint faces completely cover and are fixed to the upper end faces of the corresponding tower bases in a lap joint mode. The connecting plates are arranged at intervals in the Y direction, one ends of the connecting plates are arranged on the side, facing the front wall plate, of the cross beam body, and the other ends of the connecting plates are fixed to the front wall plate. According to the cabin cross beam structure, the integration degree is greatly improved, the comprehensive cost is greatly reduced through the lightweight design, in addition, the torsional rigidity of a vehicle body is improved through the adopted multi-claw structure, and the connecting strength of the cabin cross beam and a tower base is improved.

The invention belongs to the technical field of in-service inspection of pressure pipes, and discloses an anti-torsion long-stroke multistage sealing telescopic structure which comprises a main cable driving guide assembly and a rigid chain driving assembly which are connected, the rigid chain driving assembly is installed at one end of a support guide rail assembly, and a rigid chain library is arranged below the support guide rail assembly. A rigid chain is arranged in the rigid chain library, the multi-stage telescopic sleeve is arranged on the support guide rail assembly in a penetrating mode, the front end of the rigid chain is connected with the tail end of the multi-stage telescopic sleeve, and the rigid chain driving assembly drives the rigid chain to move so as to drive the multi-stage telescopic sleeve to retract and expand. The in-service inspection of the CANDU nuclear reactor pressure pipe can be realized, the driving stroke is long, the circumferential torsional rigidity is enough, the sealing performance is realized, the inspection tool is continuously pushed forwards, the stroke range of the inspection tool covers the whole length of the pressure pipe, and in the inspection execution process, each sealing part of each stage of telescopic component does not generate visible leakage.

The utility model provides a front cabin connecting structure and a vehicle. The front cabin connecting structure comprises a front longitudinal beam, a front wheel cover side reinforcing beam assembly, a front anti-collision beam assembly and an upper cross beam. And the front longitudinal beam is connected with one side of the front anti-collision beam assembly. The front wheel cover side reinforcing beam assembly comprises a side reinforcing beam and a connecting cavity. The side reinforcing beams are located above the front longitudinal beams and connected with the front longitudinal beams through the connecting cavities. And the side reinforcing beam is connected with one side of the upper cross beam. The side reinforcing beam is connected with the upper cross beam and is connected with the front longitudinal beam through the connecting cavity, so that the force transmission efficiency is improved, the structure is simple, all parts of the vehicle body are uniformly stressed, and the overall torsional rigidity of the vehicle body is improved.

A body-on-frame pickup truck, comprising a frame (100) and a truck body (200) connected to the frame, wherein the truck body comprises a passenger compartment (210) and a cargo bed (220), which are integrated with each other; and the frame and the truck body are provided with a plurality of hard connection points (401, 402, 403, 404, 405, 406, 407, 408, 409, 410), and the plurality of hard connection points cooperate with a plurality of fasteners (300) to implement a hard connection between the truck body and the frame. The passenger compartment and the cargo bed are integrally connected to each other, such that the connection between the passenger compartment and the cargo bed is enhanced, and the appearance of the pickup truck, the stability of the cargo bed, the collision safety and the handling and stability performance are improved. Moreover, the plurality of hard connection points cooperating with the fasteners are arranged to enable the hard connection between the truck body and the frame, such that the bending stiffness and the torsional rigidity of the pickup truck are improved, and the driving safety is further improved.

The invention discloses a method and system for calculating the longitudinal torsional rigidity effective rate of a rectangular pipe-jacking tunnel under combined acting force and a storage medium. The method comprises the following steps that S1, the bending-pressing-twisting combined acting force on a calculation unit of the rectangular pipe-jacking tunnel is obtained according to the stress condition of the rectangular pipe-jacking tunnel; s2, the stress state of the pipe jacking lining structure is judged according to the relation between the bending moment and the axial force, and the stress state of the structure is divided into two different conditions according to the position of a neutral axis; s3, for different stress states, according to deformation coordination conditions and mechanical equilibrium conditions, calculating the distance between a neutral axle on the section and the center of the section; s4, according to the torque balance condition and further according to the two different conditions, the position of the torsion center and the anti-friction torque generated by the concrete in the pressed area are calculated; and S5, calculating a joint torsion angle and equivalent torsional rigidity, and further calculating the effective rate of the torsional rigidity. The longitudinal torsional rigidity effective rate of the rectangular pipe-jacking tunnel under the bending, pressing and twisting combined acting force can be rapidly and accurately obtained, and a basis is provided for structural safety analysis of the rectangular pipe-jacking tunnel.

The invention discloses a prefabricated heat preservation groove type plate floor slab system of an assembly type steel structure trestle, and relates to the technical field of groove type prefabricated heat preservation floor slabs, the prefabricated heat preservation groove type plate floor slab system comprises an anti-skid face plate and a heat preservation bearing mechanism, the heat preservation bearing mechanism is arranged at the bottom of the anti-skid face plate, the heat preservation bearing mechanism comprises a plurality of sealing plates, and the sealing plates are arranged in the anti-skid face plate. The multiple sealing plates are arranged and located at the bottom of the anti-skid panel, multiple second supporting blocks are arranged at the bottoms of the sealing plates, groove-shaped plates are arranged on the outer sides of the multiple second supporting blocks, structural blocks are integrally formed through pouring and extruding, reinforcing strips are arranged on the inner walls of the structural blocks, and the structural blocks and annular hoops form a two-way constraint combined framework which can bear bending moment and shearing force; therefore, the bending resistance, the shearing resistance, the torsional rigidity and the overall bearing capacity of the plate body are improved on the premise that heat preservation is not affected on the whole, the engineering problems are avoided, and normal construction work and construction time are maintained.

A cross frame for a bicycle, such as an e-bike, includes a head tube and a seat tube with a bottom bracket area arranged at the lower end of the seat tube, a straight first tube starting from the head tube which crosses the seat tube and then extends towards a rear dropout of a rear triangle of the cross frame, a second tube starting from the head tube above the first tube which crosses the first tube at an intersection and then extends towards the bottom bracket area, and at least one chain stay extends from the bottom bracket area to the rear dropout. The second tube has an angular deflection within the plane of the frame in the section between the head tube and the intersection to create a visually appealing frame that offers high stability and torsional rigidity with minimal weight and allows for improved handling of a bicycle equipped with the frame.

The utility model discloses an expansion sleeve diaphragm type high-torque high-rotating-speed flexible high-precision main shaft connecting device, which relates to the technical field of couplings and comprises a stainless steel diaphragm, and two sides of the stainless steel diaphragm are connected with side section outer cones; a side section inner cone is mounted on the outer side of the side section outer cone in a matched manner; the conical holes in the inner sides of the side section inner cones extrude the elastic cones inwards, so that the elastic cones and the shaft are tightly held and fixed, as the elastic cones are the four elastic die petals, the shafts with different diameters can be locked and fixed, the structure is simple, and the use is flexible; due to the fact that the stainless steel membranes are made of stainless steel, and the multiple membranes are used in a stacked mode, high elasticity and torsional rigidity are achieved, reliable power transmission and positioning functions can be provided, the membranes can absorb vibration and impact and compensate radial, angular and axial deviations, other mechanical elements are effectively protected, and the service life of the membrane is prolonged. The service life of the coupler is prolonged.

The invention discloses a robot branched chain body torsional rigidity testing device and method, and the device comprises a horizontal iron which is used for movably connecting a torsional rigidity testing module and two bases; the two bases are respectively used for fixing the supporting module and the test connecting piece; the supporting module is used for slidably connecting and fixing a sliding block and a sliding rail of a tested piece; the test connecting piece comprises a shaft connecting piece and a branched chain body connecting piece which are coaxially connected; the branch chain body connecting piece is used for being coaxially connected with a tested piece, and the shaft connecting piece is used for being coaxially connected with the torsion module; the torsional rigidity testing module comprises a loading module, a torsion module, a measuring module and a controller; the loading module applies a load to the torsion module; the torsion module is rotationally connected with the shaft connecting piece and converts the load of the loading module into a torsion force on the tested piece; the measuring module is used for detecting the transverse and longitudinal displacement of the branched chain body connecting piece; the controller obtains the load of the loading module and the displacement detected by the measuring module. The torsional rigidity of the robot branched chain body can be tested.

The invention relates to the technical field of transmission shaft machining, in particular to a kinetic energy transmission shaft body and a machining process integrating pultrusion, weaving, winding and glue injection, the kinetic energy transmission shaft body comprises a shaft body, the shaft body is formed by winding a continuous composite material reinforced thermosetting resin prepreg tape, and a composite material comprises a reinforcing material, a base material, a functional additive and filler; a plurality of limiting grooves are formed in the inner wall of the shaft body, the limiting grooves extend in the axial direction of the shaft body, the length of the limiting grooves is consistent with that of the shaft body, and pultrusion, weaving, winding and glue injection processes are organically integrated, so that the manufactured kinetic energy transmission shaft body has high specific strength, high torsional rigidity, excellent interlayer bonding performance and good dynamic stability; meanwhile, a limiting groove can be precisely machined in the inner wall of the shaft body, the high-precision torque transmission requirement is met, and the defects that a traditional metal shaft body is heavy and prone to corrosion and layers of a single composite material shaft body are prone to layering are overcome.

The utility model discloses a front overhang longitudinal pushing support, an off-highway mining dump truck frame and an off-highway mining dump truck, the front overhang longitudinal pushing support comprises a pair of main vertical plates, a pair of front vertical plates, a pair of front vertical plates, a pair of rear vertical plates and a pair of rear vertical plates, the top plate is arranged at the tops of the pair of main vertical plates and is used for connecting the pair of main vertical plates; and the fixing pipe is arranged between the pair of main vertical plates and is used for mounting a thrust rod. Through reasonable structural design, borne force can be effectively dispersed, force from a front suspension part is effectively transmitted to the frame longitudinal beam, the main vertical plate is supported through the fixing pipe, so that the front suspension longitudinal thrust support has good structural strength and torsional rigidity, the fixing reliability of a front thrust rod can be guaranteed, and the front thrust rod is prevented from being damaged. Therefore, the front thrust rod can accurately exert the function of controlling the front overhang movement of the vehicle.

Disclosed is a guidewire configured to provide high torsional stiffness without detrimentally increasing bending stiffness. Such a device provides a high ratio of torsional stiffness to bending stiffness. The guidewire device includes a core with a proximal section and a distal section. The distal section of the core is coupled to a microfabricated outer tube such that the distal section of the core passes into and is encompassed by the outer tube.

The invention provides a variable damping-variable rigidity joint of a robot grinding motorized spindle and a flutter suppression method. The variable damping-variable rigidity joint comprises a driving end used for driving a grinding wheel to rotate. The variable damping-variable rigidity joint is used for adjusting grinding damping and rigidity; the upper computer is used for processing signals and calculating damping-rigidity; the torque sensor is used for detecting and collecting relative rotation angle signals and rotation torque signals of the grinding wheel; the variable damping-variable stiffness joint comprises a power input shaft, a magnetorheological fluid magnetic field coil, a disc type rotor, magnetorheological fluid, a stator coil, a permanent magnet, a connecting piece, a thin flexible rod, a rotating shell and a grinding output shaft. According to the method, the optimal joint damping coefficient-rigidity coefficient parameter combination is calculated, and the currents of the magnetorheological fluid coil and the stator coil are accurately adjusted, so that the torsional damping and torsional rigidity of the joint are controlled, high-efficiency and high-quality stable grinding work of the non-circular curved surface grinding robot is achieved, and the adaptive capacity of the robot to the grinding environment is improved.

The invention discloses a body-in-white sensitivity simulation method and electronic equipment. The body-in-white sensitivity simulation method comprises the steps of generating a component file for storing part information based on the part information; variable material thickness information filled by a user of each component is obtained, and a torsional rigidity calculation file is generated for each component; all the torsional rigidity calculation files are sent to simulation calculation software, and based on a result file, the torsional rigidity value of each component after the component is updated into the variable material thickness information is determined; and obtaining the sensitivity of the part corresponding to each assembly. According to the method, repeated and tedious work is automatically realized, strict control is facilitated in the whole process of obtaining the sensitivity of the body-in-white, the workload of manual operation is greatly reduced, possible attribute errors caused by human negligence of engineers in the process of obtaining component attributes through pretreatment are avoided, and the sensitivity of the body-in-white is improved. The work efficiency of pre-treatment and post-treatment of the engineer is greatly improved, and the engineer can conveniently put more energy into structure optimization and weight reduction.

Flexible seal assemblies having a relatively low torsional rigidity and high longitudinal flexure to thereby allow the flexible seal assembly to flex between adjacent components and maintain a seal, even when movement between adjacent components occurs, is described. In some embodiments, the flexible seal assembly includes one or more layers of metal matrix material, the metal matrix material being comprised of a plurality of short segments of thin wire arranged randomly and sintered together to form a semi-rigid sheet. The one or more layers of metal matrix material can be sandwiched between an upper casing and a lower casing of a metal alloy casing. In various embodiments, additional features are provided for helping to make sure the seal assembly stays together, such as spot welds formed through the seal assembly, an S-shaped casing, and a recess / protrusion feature provided on adjacent layers of metal matrix material.

This invention relates to the field of blade crown structure technology and discloses a method for designing the oblique cut angle of crowned blades. By defining the direction and magnitude of the oblique cut angle of the crowned blade and defining evaluation parameters for the rationality of the static design of the crowned blade, simulation models of crowned blades with different sizes and directions of oblique cut angles on the crown contact surface are constructed. Static analysis is performed on the simulation models, and the oblique cut angle and magnitude of the contact surface are determined based on the static evaluation parameters. This invention solves the problems of excessive static stress in the blade due to pre-twist during assembly of crowned blades and crown misalignment due to rubbing. In particular, it addresses the following issues: for short blades with crowns and small aspect ratios and large torsional stiffness, even a small pre-twist angle design can still result in excessive stress. Reducing the pre-twist angle makes it difficult to ensure that the pre-twist angle tolerance meets requirements during processing and assembly. Using traditional improvement methods requires significant modifications to the blade, limiting engineering applications and affecting other blade performance.

The invention discloses a hydraulic bushing with excellent torsion performance. The hydraulic bushing comprises an outer pipe, and a hydraulic main spring assembly used for second-stage vibration reduction and a solid bushing assembly used for first-stage vibration reduction are sequentially and concentrically arranged in the outer pipe from outside to inside; the hydraulic main spring assembly comprises a first middle pipe, and the outer side wall of the first middle pipe is connected with the inner side wall of the outer pipe through a first rubber body. The solid bushing assembly comprises a second middle pipe and an inner pipe, and the outer side wall of the second middle pipe is connected with the inner side wall of the first middle pipe; the inner pipe is arranged in the second middle pipe, and the outer side wall of the inner pipe is connected with the inner side wall of the second middle pipe through a second rubber body. The damping device is provided with the first-stage damping solid bushing assembly and the second-stage damping hydraulic main spring assembly, and the hydraulic main spring assembly on the outer side provides a hydraulic characteristic and meanwhile provides a part of rigidity characteristic. When the hydraulic main spring assembly on the outer side is twisted and the torsion reaches a certain degree, the solid lining assembly on the inner side not only provides axial and radial rigidity, but also starts to provide the torsional rigidity characteristic.

This invention discloses a precision right-angle reducer torsional stiffness and backlash detection device, belonging to the field of precision gear performance testing technology. The device includes support blocks, with mounting plates fixedly connected between the tops of multiple support blocks. A first connecting plate is fixedly connected to the front end of the top of each mounting plate, and multiple second connecting plates are slidably connected to the rear end of the top of each mounting plate. A test piece is fixedly connected to the top of one of the second connecting plates, and adjustment components are installed on the tops of two of the second connecting plates. A clamping component is installed between the bottoms of the two adjustment components. A test component is installed on the top of the first connecting plate. By setting adjustment components, this invention makes the testing process more flexible, significantly shortening the time spent on equipment replacement and readjustment, improving testing efficiency, and thus better aligning with the rapid operation of the production line, reducing the possibility of production delays.

According to the forecabin reinforcing structure, three triangular frame structures are adopted, reinforcing ribs are evenly distributed on all frames, a left shock absorber support and a right shock absorber support are connected with a front wall assembly to form a firm cage type structure, a force transmission path is increased, and therefore the torsional rigidity and the modality of a body in white and the dynamic rigidity of shock absorber installation points in all directions are greatly improved; the frame structures are all made of aluminum alloy materials, are formed through casting, and are light in weight, simple in manufacturing process and high in manufacturing precision.

This application relates to a vehicle, a laser radar mounting bracket, and its mounting structure (10). The mounting structure (10) of the laser radar mounting bracket includes a rigid support part (11), an elastic support part (12), and a first connecting member (13). The rigid support part (11) is provided on the bracket body (20). The elastic support part (12) is fixedly connected to the rigid support part (11). The first connecting member (13) is for connection to the laser radar (30), and the first connecting member (13) is fitted into the elastic support part (12). Since the first connecting member (13) is connected to the rigid support part (11) via the elastic support part (12), it exhibits vibration damping and sound damping effects. Furthermore, since the first connecting member (13) is fitted into the elastic support part (12) and the elastic support part (12) is fixedly connected to the rigid support part (11), torsional rigidity is also exhibited, resulting in good mounting stability of the laser radar (30) on the laser radar mounting bracket.

A submersible hydraulic assembly (6) for an energy storage plant (1) comprises: • at least one hydraulic machine (12); • at least one first buoyancy chamber (46, 50, 63) filled with at least one first buoyancy element (47, 51, 64); the at least one first buoyancy chamber (46, 50, 63) being configured in such a way that the hydraulic machine (12) is substantially neutrally buoyant when submerged in an environmental liquid. The invention further relates to an energy storage plant (1), to a method for performing maintenance operations on an energy storage plant (1) and to a method for assembling / disassembling an energy storage plant (1).

The invention provides an aeroelastic model vibration test device with variable bending and torsional modal stiffness, which comprises a plane moving mechanism, a magneto-rheological damping device and a torsional stiffness device, and is characterized in that the magneto-rheological damping device is mounted on the plane moving mechanism, and a model is connected with the magneto-rheological damping device through the torsional stiffness device; the torsional rigidity device comprises a connecting piece, a rotary shifting piece and an elastic mechanism, the connecting piece is connected to the magnetorheological damping device, the elastic mechanism is connected to the connecting piece, the rotary shifting piece is connected with the model, the rotary shifting piece and the magnetorheological damping device are coaxial, and the elastic mechanism is shifted to twist when the rotary shifting piece rotates. The magnetorheological fluid is used for damping, the response is fast, the damping force is stable, and the controllability is good; and through the plane moving mechanism and the torsional rigidity device, the coupling effect in the downwind direction, the transverse wind direction and the torsional direction can be achieved, the test requirement of multi-degree-of-freedom structure response is met, and the complex dynamic characteristics of an actual structure under the wind load effect are reflected more truly.