33 results about "Electrorheological fluid" patented technology

The invention provides an adjustable damping capsule vibration isolation system based on electrorheological fluid, and belongs to the field of vibration isolation devices.The adjustable damping capsule vibration isolation system comprises a vibration isolation capsule, the vibration isolation capsule is filled with the electrorheological fluid, and the electrorheological fluid comprises solid particles; a pneumatic pump; a conduit; at least part of solid particles in the electrorheological fluid move to the guide pipe under the action of gravity; the pneumatic pump is configured to pump gas into the guide pipe based on the target gas flow so as to convey a target number of solid particles in the guide pipe into the vibration isolation bag body to change the concentration of the solid particles in the electrorheological fluid, and the electrorheological fluid is configured to perform vibration isolation treatment on elastic waves of the vibration source by using an electrorheological effect based on the concentration of the solid particles.

The application discloses a giant electro-rheological fluid capsule, a preparation method thereof and application of the giant electro-rheological fluid capsule in a rigid-flexible matrix digital controllable intelligent material, and belongs to the technical field of novel intelligent materials. The giant electro-rheological fluid capsule comprises: an inner core composed of a giant electro-rheological fluid; an organic shell layer wrapping the inner core; and a surface modification layer located outside the organic shell layer; wherein the surface modification layer is a siloxane layer formed through a silanization reaction and capped by a low-surface-energy substance. The application also provides a preparation method thereof. Compared with the prior art, the application reduces the surface energy of the shell layer, improves the wettability and compatibility with non-polar external phases such as silicone oil, inhibits secondary coagulation and electrostatic agglomeration, reduces dielectric loss, and obtains more stable long-term rheological properties while guaranteeing response speed and yield stress.

The invention discloses a clinical airway unobstructing device for old-age medicine. The clinical airway unobstructing device comprises a drafting frame, a pop-up auxiliary structure, a rotating replacement disc, a winding roller, a storage assembly and a main body support. The invention belongs to the technical field of airway patents. According to the scheme, only when all the trigger buttons are pressed down by the telescopic moving rod, discharging between the parallel-plate capacitors is ended, electrorheological fluid is made to be in the liquid characteristic, and in the state, the pop-up sleeving shell is separated from the rotating shaft through the pop-up auxiliary spring, so that the winding roller is assisted in being popped up, and therefore the winding effect is improved. Automatic auxiliary popping of the airway hose after the airway hose is wound in place on one winding roller is completed, and automatic experience is achieved; and when the next group of winding rollers are popped out, the falling winding rollers can be clamped by the storage rollers in the other group of overturning accommodating shells below, so that the air passage hose and the air passage intubation tube are convenient to replace, and the use experience is improved.

The present invention relates to an electrorheological polishing apparatus and polishing method based on a wire electrode or a multi-wire electrode. The electrorheological polishing apparatus comprises a workpiece holder, a workpiece to be processed, a workbench, a fluid tank, a polishing fluid, a wire electrode, an electrode chuck and an alternating current power supply. The fluid tank is connected to the workbench; the fluid tank is filled with the polishing fluid; the workpiece holder is fixedly mounted on the workbench by means of a connecting member, and can be designed and replaced according to different shapes of the workpiece to ensure that the position of the workpiece does not move during polishing. The present invention applies the electrorheological effect during polishing, so that the electrorheological fluid between two wire electrodes generates a chain structure along the direction of the electric field, the wire electrode clamped by the electrode chuck can move back and forth along a specified path, and when the wire electrode moves, the solidified electrorheological fluid rubs against the surface of the workpiece, so as to remove the material on the surface of the workpiece, and the obtained workpiece has a smooth and flat surface, low roughness, and no obvious scratches or deformations.

The application discloses a self-adaptive wide-temperature-range stress compensation type display module, and relates to the technical field of liquid crystal display devices, which comprises a display assembly and a compensation assembly; the display assembly comprises a back plate, and the compensation assembly comprises a resistor, a sliding piece one and a sliding piece two; the sliding piece one comprises a sleeve, an air bag, a sliding rod, a conductive rod and an electrorheological fluid bag; the sleeve is fixedly connected with the resistor in the back plate, the sliding rod is arranged in the sleeve, and the air bag is fixed between the sleeve and the sliding rod; the conductive rod is close to the resistor and is fixed on the sliding rod; the sliding piece two is identical with the sliding piece one in structure and is oppositely arranged on the two sides of the resistor; the sliding piece one and the sliding piece two can be oppositely arranged on the two sides of the resistor, the sliding rods of the two are parallel in the up-down direction, the two sliding rods slide parallel to the ground when the temperature changes, the interference of gravity on the displacement of the sliding rods is eliminated, and the two do not interfere with each other; in a vibrating environment, the electrorheological fluid bag is solidified to lock the position of the sliding rod, and the contact point of the conductive rod and the resistor has zero jitter.

The invention discloses a freezing weight-losing shaping massage device, which relates to the technical field of freezing weight-losing, and comprises a weight-losing assembly and a fixing assembly I, the weight-losing assembly comprises a freezing weight-losing treatment head; the first fixing assembly comprises a deformation plate and an attaching bag. The deformation plate is arranged on the side of the frozen weight-losing treatment head; the fitting bag is arranged on the lower side of the deformation plate; the deformation plate is made of a deformable iron material, and the attaching bag is filled with electrorheological fluid. The deformation plate is used for bending to adapt to the body surface radian of a patient, and the attaching bag is used for attaching to the body surface of the patient. The deformable plate can be manually bent to adapt to different parts of the body of a patient, such as complex radians of the abdomen and the waist, and the problem that a rigid deformation plate is difficult to be tightly attached to the irregular body surface is solved; the attaching bag filled with the electrorheological fluid is arranged below the deformation plate, and after electrification, the electrorheological fluid is changed from a liquid state to a solid state, so that the bent and formed deformation plate is locked, and rigid support is formed.

A provided plate-and-frame filter press for medicine processing comprises a rack, a filtering mechanism, a pressure feeding mechanism, a discharging mechanism and a lubricating mechanism, the filtering mechanism comprises a fixing plate, a pressing plate, a filtering plate, a filtering frame, filtering cloth and a hydraulic rod, the lubricating mechanism comprises electrorheological fluid, an electrode plate and a main control unit, the filtering plate and the filtering frame form a filter pressing unit, and the main control unit is connected with the pressing plate. After pressurized raw materials are injected into the filter pressing cavity of the filter frame, liquid in the raw materials can penetrate through the filter cloth under the action of pressure difference and is collected under the action of the filter plate flow guide groove, solids in the raw materials can be intercepted by the filter cloth, solid-liquid separation is achieved, and after filter pressing is completed, electric energy conveyed to the electrode plates can be cut off, so that the aim of energy conservation is achieved. After the electrorheological fluid loses the action of the electric field, the electrorheological fluid becomes liquid, overflows from the microgrooves and finally covers the inner side of the filter cloth, so that the filter cloth is lubricated, at the moment, a filter cake on the outer side of the filter cloth can be quickly removed, the medicine processing efficiency is improved, and the cleaning difficulty and the labor intensity are reduced.

The application relates to the technical field of optical lens production equipment, and discloses high-efficiency dispensing and assembling equipment for optical lens production, which comprises a dispensing and assembling machine and a suction assembling mechanism, the suction assembling mechanism comprises a suction assembly, the suction assembly comprises a rubber capsule, a through hole is formed through the rubber capsule, and the rubber capsule is filled with electrorheological fluid; the adjusting assembly comprises a hollow pull tube for pulling the rubber capsule; the vacuum assembly generates suction force on the rubber capsule; according to the curved surface radian or special-shaped structure of the surface of the optical lens, the hollow pull tube of the adjusting assembly is controlled to pull the rubber capsule, the bottom end of the rubber capsule is deformed along with the pulling action, and the bottom end is completely attached to the surface of the lens; then, the through hole of the rubber capsule is vacuumized by the vacuum assembly to form negative pressure, and the completely attached sealing surface is used to prevent the negative pressure from leaking; therefore, the equipment can be adapted to different curved surface lenses and special-shaped lenses without relying on a fixed form suction disc, the lens deviation and falling caused by insufficient suction force are solved, and the transfer stability is ensured.

The invention relates to a titanium dioxide-coated lanthanum-doped MOF nanoparticle electrorheological fluid and a preparation method thereof. The dispersion phase of the electrorheological fluid is TiO2 (at) La-MOF nanoparticles with rough surfaces and coating layer spherical structures, and the continuous phase is dimethyl silicone oil; the composite material is prepared by a two-step method, and the two-step method comprises synthesizing La-MOF nanoparticles by a modified solvothermal method and synthesizing the TiO2-La-MOF composite material by a controlled hydrolysis method. Lanthanum doping and titanium dioxide coating are combined, a figure shows that the particles present a spherical structure with a rough coating layer in a scanning electron microscope figure, the composite material has anisotropy, and the characteristics of core-shell structure protection, ion doping conductivity enhancement and rapid response of nanoparticles are ingeniously fused.

This application discloses an energy-saving coal processing bottom ash recycling device, relating to the field of coal processing and recycling technology, including a sorting box, a screening component, and a cleaning component; the screening component includes a filter plate, mesh, and motor four; the cleaning component includes a robotic arm one, a push plate one, a dredging component, a robotic arm two, and a push plate two; the dredging component includes a push needle and an electrorheological fluid bladder; motor four, robotic arm one, and robotic arm two are all fixed to the inner wall of the sorting box; mesh is opened on the filter plate, and motor four is fixed to one side of the filter plate; it can realize that the filter plate is rotated by motor four, so that it is in a state of vertical downward mesh during cleaning. Under the action of gravity, the impurities that are cleaned can fall directly from the vertical mesh more smoothly, avoiding secondary blockage caused by accumulation in the inclined or horizontal mesh, thus improving cleaning efficiency; robotic arm two drives push plate two to abut against and slightly shake the tip of push needle, so that the side edge of push needle can scrape the inner wall of the mesh.

The invention relates to the technical field of medical instruments, and discloses a clinical self-adaptive medical mattress based on giant electrorheological fluid and a regulation and control system thereof.The clinical self-adaptive medical mattress comprises a frame body, the frame body comprises a bottom shell and further comprises an intermittent regulation mechanism, and the intermittent regulation mechanism is arranged on the bottom shell. The massage function and the intermittent supporting are synchronously linked and are only triggered when the human body is pressed, invalid vibration interference is avoided, the massage function and the heat dissipation function of the device are synchronously linked in the intermittent supporting process, the heat dissipation function reduces the temperature of the contact part, and the massage function relieves the pressed discomfort of the contact part. When the electrorheological fluid material is switched to a hard state, the electrorheological fluid pad can support a human body and can be directly used as a stretcher, medical staff can directly complete non-contact horizontal displacement of a patient on an operating table, a transfer bed and a sickbed by lifting the electrorheological fluid pad, and the occurrence rate of related complications of postoperative transfer is remarkably reduced.

The invention relates to the field of workpiece machining, and discloses a positioning and drilling mechanism of a vibration disc spring piece production device, which comprises a machine body and a motor arranged at the top of the machine body, a drill bit is clamped to an output shaft of the motor, a workbench is arranged at the lower end of the machine body, and a fixing assembly for fixing a vibration disc spring piece is arranged at the top of the workbench; the fixing assembly comprises a groove formed in the surface of the workbench, a fixing base is fixedly connected into the groove, a penetrating hole is formed in the middle of the fixing base, the fixing base is made of rubber and filled with electrorheological fluid, a first spring is fixedly connected into the fixing base, and a pressing switch is arranged at the bottom end of the interior of the fixing base. A protective cover is slidably connected to the exterior of the drill bit, and an expansion groove is formed in the inner side of the groove. The spring piece is fixed in a wrapping mode according to the shape of the spring piece, so that the spring piece can be always kept stable in the drilling process, the displacement and vibration probability of the spring piece is reduced, and the drilling precision is improved.

The utility model discloses a gas detection sensor suitable for various environments, which comprises a mover and a sealing detection structure mounted on the mover, the utility model relates to the technical field of pipeline gas detection, the gas detection sensor is ingenious in design, integrates various functions, and is suitable for various environments. The obvious advantages are shown; the concentric-square-shaped lifting support and the lifting hydraulic push rod work cooperatively, so that it is ensured that the lifting supporting block is accurately positioned and perfectly matched with the height of a pipeline. Through fine adjustment of a horizontal opposite concave block, a horizontal supporting plate and a horizontal hydraulic push rod, a semicircular sleeving block is tightly attached to the pipeline, and preliminary sealing is formed; after being injected with electrorheological fluid, the semicircular liquid bag is rapidly solidified to fill up small gaps, a tight thread rotating space is formed, and pressure intensity monitoring and leakage judgment are facilitated.

The application relates to a semi-active hierarchical energy consumption variable stiffness damper, which comprises a shell, the inner surface of the shell is coated with an electrocoat, the bottom of the shell is fixedly provided with a first permanent magnet, the upper end opening of the shell is provided with an MFC energy collection device, the sidewall of the MFC energy collection device is in contact with the electrocoat, the upper end of the MFC energy collection device is fixedly provided with piezoelectric material, the lower end is provided with a black box, a load-bearing steel pipe and a tuned mass damper device are arranged between the black box and the first permanent magnet, a control system is arranged in the black box, the upper end of the tuned mass damper device penetrates through the black box and is electrically connected with the control system, and the space formed by the first permanent magnet and the shell is filled with electrorheological liquid. The damper has the effects of multi-path composite energy consumption, semi-active frequency conversion, hierarchical energy consumption and variable stiffness, is suitable for various frequency ranges, can further strengthen the damping effect, and can finely control the damping degree.

The invention relates to the technical field of electrorheological fluid packaging systems, in particular to a flexible packaging body for improving stability of electrorheological fluid and a preparation method of the flexible packaging body. The flexible packaging body provided by the invention is composed of two composite aluminum plastic films with PET / AL / PE structures, the periphery of the flexible packaging body is pasted with an insulating tape to form a cavity through heat sealing, and giant electrorheological fluid is filled in the cavity; the aluminum foil middle layer is also used as an electrode and a waterproof layer, the PET outer layer provides chemical inertness and hydrophobicity, and the PE inner layer protects the electrode and enhances bonding. According to the flexible packaging body, the four functions of water blocking, electric conduction, flexibility and sealing are integrated into the same 150m-level film, permeation of water vapor can be blocked in the extreme environment with the humidity being 90% RH, sedimentation of electrorheological fluid is remarkably slowed down in the high-humidity and long-term electric field environment, the stability of an electrorheological fluid device is improved, the packaging body is kept soft, and the packaging body is not prone to deformation. Reversible rigidity regulation and control from liquid-like state to solid-like state under the electric field are achieved.

The film evaporator comprises an evaporation cylinder, a heating jacket, a feeding pipe, a driving motor, a rotating shaft, a scraper blade and a contact pressure adjusting mechanism, the contact pressure adjusting mechanism comprises a viscosity detection mechanism, a soft rubber sleeve, electrorheological fluid, an electrode plate and a main control unit, and after raw materials enter the evaporation cylinder through the feeding pipe, a liquid film can be formed through the scraper blade; when the heating jacket can heat the interior of the evaporation barrel, a liquid film with a large area can improve the heat exchange efficiency, before evaporation, the viscosity detection mechanism can detect the viscosity of raw materials in the feeding pipe and transmit viscosity data to the main control unit, and the main control unit can control the magnitude of current conveyed to the electrode plate according to the viscosity data, so that the heat exchange efficiency is improved. The viscosity of the electrorheological fluid in the soft rubber sleeve is adjusted by changing the intensity of an electric field generated by the electrode plate, so that the rigidity of the soft rubber sleeve is changed, uniform liquid films are conveniently generated for raw materials with different viscosities, the evaporation effect is guaranteed, meanwhile, the scraper does not need to be replaced, and the production and processing cost is reduced.

The utility model discloses a numerical control milling machine for machining parts of a supercharger, which comprises a machining table, a packaging box, a longitudinal and transverse lead screw module, a machining device and a blade clamping structure, and relates to the technical field of production of superchargers. And the horizontal moving plate and the moving cylindrical box on the horizontal moving plate are driven to realize accurate horizontal displacement. The vertical position of the blade in the box can be flexibly adjusted by moving the lifting adjusting assembly arranged in the cylindrical box. Then, the electrorheological liquid is led out of the liquid pumping box through the liquid pumping pump and injected into the two pairs of expansion arc liquid bags; and the liquid bags are gradually expanded under the filling of the electrorheological liquid, so that the blades are primarily and flexibly extruded and limited.

The invention discloses a rigid-flexible matrix digital controllable intelligent material, and belongs to the technical field of novel intelligent materials. The rigid-flexible matrix digital controllable intelligent material is of a layered laminated structure: (1) an upper packaging layer; the upper electrode layer is provided with a plurality of interdigital electrodes extending in the first direction; the functional layer comprises a flexible matrix and a plurality of microcapsules dispersed in the flexible matrix, and each microcapsule comprises a shell and an electrorheological fluid inner core or other dielectric objects encapsulated in the shell; (4) a lower electrode layer; (5) preparing a lower packaging layer; wherein the electrode system is configured to be capable of independently applying an electric field to a specific unit in the matrix so as to reversibly change the mechanical property of the functional layer in the corresponding area. The giant electrorheological working fluid in the microcapsule generates reversible yield stress and viscoelastic modulus transition under the action of a local electric field, and an unselected area is kept in an initial rheological state; the electrode patterning enables a horizontal field and a vertical field to be integrated, and controlled field intensity distribution is formed at pixel intersection points.

The application provides a kind of adjustable damping capsule vibration isolation system based on electrorheological fluid, belong to the field of vibration isolation device, comprising: vibration isolation capsule, vibration isolation capsule is filled with electrorheological fluid inside, wherein, electrorheological fluid includes solid particles;Air pressure pump;Conduit;At least part of solid particles in electrorheological fluid moves to conduit under the action of gravity;Air pressure pump is configured to pump gas into conduit based on target gas flow, to deliver target number of solid particles in conduit to the inside of vibration isolation capsule, to change the concentration of solid particles in electrorheological fluid, wherein, electrorheological fluid is configured to use the effect of electrorheological effect on the elastic wave of vibration source for vibration isolation treatment based on the concentration of solid particles.

The present application relates to a kind of multi-degree-of-freedom fixed support device for ureter flexible mirror, belong to medical instrument technical field.The device includes adjusting support and support unit.Adjusting support is used to be fixed to operating bed and provide multi-degree-of-freedom pose adjustment.Support unit includes parallelogram support and the guiding clamping cylinder connected at its two ends.Core improvement is that: the inner wall of guiding clamping cylinder is equipped with sealed elastic thin liquid bag, bag is filled with viscous liquid, bag inner wall is equipped with long nose and short nose of internal cavity communication, form continuous fluid chamber, realize the adaptive, low damage distributed support and dynamic damping of mirror body.Viscous liquid is preferably electrorheological fluid, by control circuit adjustment electric field intensity, can realize the stepless switching from flexible damping to rigid lock of clamping state.The present application effectively solves the technical problems, such as the clamping stability and mirror protection of existing support device difficult to consider, unable to effectively inhibit micro-motion and feeding operation inconvenience.

The application relates to an electrorheological fluid of MOF@g-C3N4 hybrid particles and a preparation method thereof. The electrorheological fluid has a dispersed phase and a continuous phase; the dispersed phase is mainly MOF@g-C3N4 nano particles with a spherical porous hybrid lamellar structure prepared by combining a calcination method and a solvothermal method.

The closed continuous feeder comprises a reaction tank, a processing support, a plurality of raw material boxes, a plurality of inclined drainage pipes and a feeding structure, the processing support is installed on the reaction tank, the plurality of raw material boxes are evenly installed on the processing support, the inclined drainage pipes are installed on the processing support, and the feeding structure is installed on the processing support. The multiple inclined drainage pipes are inserted into the multiple raw material boxes respectively, the multiple inclined drainage pipes are installed on the machining support, and the feeding structure is connected to the multiple inclined drainage pipes and the reaction tank. A sealing assembly driven by expansion electrorheological fluid is adopted, millisecond-level adjustment of the diameter of a drainage inner rubber tube is achieved through electromagnetic control, a dynamic sealing barrier is formed in cooperation with the double-liquid-bag design, and zero leakage under the pressure of 0-5 MPa is guaranteed.

The application discloses a self-adaptive intelligent transformer grounding device for uneven ground, which comprises a connecting column, an insulating sleeve, a liquid storage pipe, a plurality of rotating frames, a torsional spring, a limiting frame, a plugging assembly and a stabilizing assembly. The outer periphery of the liquid storage pipe is compounded with a shear thickening fluid bag body layer, and the inside is filled with an electric field responsive electrorheological fluid; the plugging assembly comprises a guide column and a first spring, a direct current electric field can be applied between the guide column and the connecting column to make the electrorheological fluid change from a liquid phase to a solid phase; the rotating frames are circumferentially distributed, are not connected with each other and have independent rotating axes, and the limiting frame is removed to make each rotating frame independently expand and adhere to the hole wall under the driving of the torsional spring. Through the triple synergistic mechanism of shear thickening impact hardening, electric field regulation of electrorheological fluid and mechanical structure multi-point decoupling, dynamic reversible adjustment of grounding impedance and full-scale hole wall self-adaptive adhesion are realized.

The waste recovery device for diamond machining comprises a raw material channel, a magnetic mixing cavity, a magnetic separation mechanism, an electric mixing cavity and an electric separation mechanism, and the magnetic separation mechanism comprises a magnetorheological fluid storage box, a magnetic field separation channel, an electromagnetic coil and a coarse diamond outlet pipe; the electric separation mechanism comprises an electrorheological fluid storage box, an electric field separation channel, an electrode plate and a fine diamond outlet pipe, waste materials generated during machining are conveyed to the magnetic separation mechanism through a raw material channel, metal particles sink to the bottom under the action of a gradient magnetic field generated by an electromagnetic coil, and slurry rich in diamond particles can be located in the middle of the magnetic field separation channel; a coarse diamond can be conveyed into an electric separation mechanism through a coarse diamond outlet pipe, an electrode plate is arranged in an electric field separation channel, a horizontal uniform electric field can be generated, the viscosity of electrorheological fluid is increased through the electric field, a uniform filtering layer is formed, particles in raw materials are filtered, a fine diamond layer is formed in the middle, and diamond particles can be discharged through a fine diamond outlet pipe; recycling is achieved, and the production cost of manufacturers is reduced.

The invention discloses a giant electrorheological fluid capsule, a preparation method and application of the giant electrorheological fluid capsule in a rigid-flexible matrix digital controllable intelligent material, and belongs to the technical field of novel intelligent materials. The giant electrorheological fluid capsule comprises an inner core and an outer core, wherein the inner core is formed by giant electrorheological fluid; the organic shell layer wraps the inner core; the surface modification layer is positioned outside the organic shell layer; wherein the surface modification layer is a siloxane layer which is formed through silanization reaction and is terminated by a low-surface-energy substance. The invention also provides a preparation method of the composition. Compared with the prior art, the preparation method has the advantages that the surface energy of a shell layer is reduced, the wetting and compatibility with non-polar external phases such as silicone oil are improved, secondary coagulation and electrostatic agglomeration are inhibited, the dielectric loss is reduced, and more stable long-term rheological property is obtained while the response speed and yield stress are ensured.

The present disclosure provides a reflective display panel, a manufacturing method and a display device. The reflective display panel comprises a first substrate and a second substrate arranged oppositely, and a structure layer of electrorheological fluid, a first electrode layer and a second electrode layer between the first substrate and the second substrate. The structure layer of electrorheological fluid comprises insulating oil and metal particles in the insulating oil. The first electrode layer and the second electrode layer are configured to form an electric field in the structure layer of electrorheological fluid, and the direction of the electric field is parallel to the first substrate. A lens layer is arranged on one side of the first substrate close to the second substrate. When the first electrode layer and the second electrode layer are powered, the refractive index of the structure layer of electrorheological fluid is less than the refractive index of the lens layer, and the light incident from the side of the first substrate away from the second substrate to the lens layer is reflected back by the lens layer.

The application discloses an electronic device and a control method, and belongs to the field of communication devices. The electronic device comprises a shell, a first opening and a second opening on the surface of the shell, a sound generating unit arranged in the shell, and a first sound guide channel and a second sound guide channel in the shell. The first sound guide channel is connected with a front cavity of the sound generating unit and the first opening, and the second sound guide channel is connected with a rear cavity of the sound generating unit and the second opening. A diaphragm assembly is arranged at the second sound guide channel close to the second opening. The diaphragm assembly comprises a flexible membrane and an electrorheological fluid. The flexible membrane is fixedly connected with the shell. The flexible membrane has a gas permeable hole and a filling cavity which are connected with each other. The electrorheological fluid is filled in the filling cavity. In the case that the sound generating unit is in a receiver mode, the electrorheological fluid avoids the gas permeable hole. In the case that the sound generating unit is in a non-receiver mode, the electrorheological fluid blocks the gas permeable hole.

The invention relates to the technical field of dampers, and discloses a cutting chain mode giant electrorheological fluid damper based on a planetary ball screw, which comprises a nut outer cylinder, a motion conversion assembly and a damping adjusting assembly, linear movement of the nut outer cylinder is converted into rotating movement through the movement conversion assembly, and the movement conversion assembly rotates to enable the damping adjusting assembly to rotate, so that controllable damping force is generated. Damping force is generated by applying stretching and shearing effects to giant electrorheological fluid between the fixed electrode plates arranged at intervals, the working mechanism of the device is based on stretching and shearing of giant electrorheological fluid particle chains formed by induction of the porous insulating movable plate to an electric field, and therefore the device is called a chain cutting mode, and compared with a traditional shearing mode, the damping force is greatly reduced. The mode can generate larger damping force; compared with a flowing mode, the structure is simpler; and compared with an extrusion mode, the working stroke is larger.

A brace 902 for a vehicle (1044, Fig. 10) comprising at least one damper 934 containing a magnetorheological or electrorheological fluid, energisable to cause a change in viscosity of the fluid to cha