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58 results about "Electrorheological fluid" patented technology

Electrorheological (ER) fluids are suspensions of extremely fine non-conducting but electrically active particles (up to 50 micrometres diameter) in an electrically insulating fluid. The apparent viscosity of these fluids changes reversibly by an order of up to 100,000 in response to an electric field. For example, a typical ER fluid can go from the consistency of a liquid to that of a gel, and back, with response times on the order of milliseconds. The effect is sometimes called the Winslow effect after its discoverer, the American inventor Willis Winslow, who obtained a US patent on the effect in 1947 and wrote an article published in 1949.

Damping-adjustable capsule vibration isolation system based on electrorheological fluid

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.
Owner:TIANJIN UNIV

Method and device for detecting loosening fault of high-voltage connector and automobile

The invention relates to the technical field of fault detection, in particular to a high-voltage connector loosening fault detection method and device and an automobile, and the method comprises the following steps: forming a surface acoustic wave resonator array based on an interdigital transducer array, an acoustic wave resonator and a flexible waveguide; butting a signal source radio frequency cable with the pin interdigital electrode chip, triggering data acquisition, performing Fourier transform on original data, and judging the loosening risk of the connector according to each parameter threshold value; carrying out three-dimensional modeling on the connector plugging interface, carrying out modal analysis on the model, and obtaining surface acoustic wave frequencies, group velocities and phase distribution under different pre-tightening forces so as to identify a contact force abnormal region; based on a multi-stage early warning mechanism, rapid locking is achieved through electrorheological fluid, and displacement is finely adjusted through a magnetostrictive rod. According to the invention, the loosening hidden danger can be quickly and accurately locked, a tight protection system is constructed by multi-stage early warning and mechanical self-locking, and the loosening risk of the high-voltage connector can be greatly reduced from early warning to active intervention.
Owner:CHANGZHOU LIJITONG AUTO PARTS CO LTD

Macro-electrorheological fluid capsule, preparation method and application thereof in rigid-flexible matrix digital controllable smart material

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.
Owner:NINGBO SHENGHE ZHILIAN MOTOR CO LTD

Medical clinical airway patency device for old people

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.
Owner:JILIN UNIV FIRST HOSPITAL

Electrorheological polishing apparatus and polishing method based on wire electrode or multi-wire electrode

PCT designated stageWO2025247427A3Grinding work supportsPolishingWorkbench
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.
Owner:TONGJI UNIV

A display module with adaptive wide-temperature-range stress compensation

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.
Owner:SHENZHEN TECHSTAR ELECTRONICS

Freezing weight-losing shaping massage device

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.
Owner:GUANGZHOU ZHIHE INNOVATION TECH CO LTD

Electrorheological polishing apparatus and polishing method based on wire electrode or multi-wire electrode

PCT designated stageWO2025247427A2Grinding work supportsPolishingWorkbench
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.
Owner:TONGJI UNIV

Portable needle taking box for acupuncture and moxibustion

The invention discloses a portable needle taking box for acupuncture and moxibustion. The portable needle taking box comprises an anti-falling assembly for effectively preventing a needle body from falling, a rotary telescopic assembly convenient to overturn, open and close, a containing box body, a containing surrounding groove and an overturning containing shell. The invention belongs to the technical field of acupuncture boxes, and provides an anti-falling assembly in order to solve the problems that when an acupuncture box is used, needles are inconvenient to take out, and when an acupuncture plate is used, the needles fall off easily, according to the scheme, a plurality of needle bodies are positioned through a clamping protrusion and a clamping groove which are matched with each other, and after two sets of external containing films are attached, the needles can be conveniently taken out. The touch switch is in contact with the touch head, so that an internal circuit is communicated, the parallel plate capacitors start to discharge, the electrorheological fluid is in a solid state, the needle body is further positioned, the needle body is effectively prevented from falling off, the needle body is prevented from being damaged due to shaking, the electrorheological fluid is matched with the external accommodating film made of a silica gel material, and the needle body can be firmly positioned; moreover, the needle body cannot be damaged, and the needle body cannot be punctured when being taken and placed.
Owner:惠州市第六人民医院

Plate-and-frame filter press for medicine processing

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.
Owner:HAINAN JIAJIAKANG MEDICAL TECH CO LTD

Angle measuring equipment for cast-in-cantilever box girder

The invention relates to the technical field of box girder measurement, and discloses an angle measuring device for a cantilever casting box girder, which comprises a base, supporting seats are vertically mounted at the tops of the two ends of the base, a box girder body is arranged between the supporting seats, and the top ends of the supporting seats are provided with placing grooves corresponding to the box girder body. The box girder body is located in the containing groove. The box girder body angle measurement process is simplified through the measurement assembly, and the box girder body angle measurement difficulty is reduced; through the detection assembly, a worker can conveniently and clearly know the position of the defect of the box girder body in time, and the worker can conveniently evaluate the forming quality of the box girder body according to the severity degree of the defect of the box girder body; the failure of the defect detection work of the box girder body caused by the deviation of the positioning disc is avoided through the electrorheological fluid, the positive electrode conductive needle and other parts before the defect detection work of the box girder body, so that the accuracy of the defect detection data of the box girder body is improved.
Owner:CHINA RAILWAY NO 2 ENG GROUP CO LTD

High efficiency dispensing and assembly apparatus for optical lens production

PendingCN122627222ASuction forceEngineering
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.
Owner:SHANGRAO JILONG OPTICAL CO LTD

Titanium dioxide coated lanthanum-doped MOF nanoparticle electrorheological fluid and preparation method thereof

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.
Owner:QINGDAO UNIV OF SCI & TECH

Energy-saving bottom slag recycling equipment for coal processing

PendingCN122352545ABottom ashRobotic arm
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.
Owner:山西省能源发展中心

Variable stiffness electrodes and electrode systems and methods

The invention relates to a rigidity-variable electrode, an electrode system and a method, and belongs to the technical field of electrolytic machining. The method is characterized in that a rigidity-variable electrode formed by compounding a flexible electrode and an electrorheological fluid layer is designed. The flexible electrode has excellent flexible deformation capacity by means of the structural design of the flexible electrode, and the rigidity of the embedded electrorheological fluid layer can be controlled and adjusted in the deformation process. In the machining process, the flexible electrode is driven by patterning regulation and control of the dot matrix magnetic field to generate controllable deformation, and therefore machining of a complex molded surface is achieved. On one hand, through collaborative design of the flexible structure and the electrorheological fluid, the flexibility and rigidity of the electrode structure are considered, rigid-flexible switching of the flexible electrode is achieved, and the requirements for flexible deformation and high-rigidity machining are met. And on the other hand, the posture of the flexible electrode is regulated and controlled in real time through the patterned magnetic field, high-degree-of-freedom and high-precision flexible control can be achieved, and the requirement for complex curved surface machining is met.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS

Clinical self-adaptive medical mattress based on giant electrorheological fluid and regulation and control system of clinical self-adaptive medical mattress

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.
Owner:THE 900TH HOSPITAL OF THE CHINESE PEOPLES LIBERATION ARMY JOINT LOGISTICS SUPPORT FORCE

Positioning and drilling mechanism of vibration disc spring piece production device

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.
Owner:苏州高士达自动化技术有限公司

A semi-active hierarchical energy dissipation variable stiffness damper

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.
Owner:CHANGAN UNIV

A vibration reduction device combining a squirrel cage spring support and an electrorheological fluid damper.

This invention discloses a combined vibration reduction device of a squirrel-cage spring and an electrorheological fluid damper, belonging to the field of vibration control for rotating power machinery. It includes a squirrel-cage spring and an electrorheological fluid damper. The squirrel-cage spring is coaxially mounted to the rotor end via bearings, and the annular electrorheological fluid damper is mounted on the outer diameter surface of the squirrel-cage spring. The mounting base of the damper and the squirrel-cage spring form the mounting area for the other components of the damper. The inner bushing, dynamic friction ring, left sealing shell, right sealing shell, and static friction ring of the damper form a closed chamber filled with electrorheological fluid. The left and right electrodes are located within the accommodating cavity of the electrorheological fluid and are used to adjust the viscosity of the electrorheological fluid via an external power supply. Thus, when the dynamic friction ring vibrates with the squirrel-cage spring, different viscosities of the electrorheological fluid will generate different resistances to the movement of the dynamic friction ring, achieving active damping adjustment and more effectively reducing rotor vibration. This solves the problem that existing rotor system vibration reduction devices cannot perform damping adjustment.
Owner:NORTHWESTERN POLYTECHNICAL UNIV

Floating support applied to clamping of large U-shaped piece

The invention belongs to the technical field of machining, and particularly relates to a floating support applied to clamping of large U-shaped parts, which comprises a base, a rail hole is formed in the center of the base, a sliding rod is slidably connected in the rail hole in a penetrating manner, and the floating support is fixedly connected to the position, extending to the upper part of the base, of the sliding rod. The upper end of the base is provided with external threads and connected with a locking pressing cap through a thread pair, a conical groove is formed in the upper end of the base, a locking spring sleeve is arranged between the locking pressing cap and the conical groove, the bottom end of the sliding rod is fixedly connected with a limiting check ring through a locking screw, and a movable groove is formed in the bottom end of the base. And a bottom sealing cap is fixedly connected in the movable groove. The self-adaptive supporting mechanism is arranged, surface deformation larger than or equal to 8 mm can be matched in a self-adaptive mode through the synergistic effect of the electrorheological fluid and the elastic block, meanwhile, the viscosity of the electrorheological fluid is controlled through the magnet exciting coil, and the supporting rigidity can be adjusted in real time according to the cutting load.
Owner:HUOSHAN JIAYUAN INTELLIGENT MFG CO LTD

Dual electric field hybrid electrorheological fluid damper

The present application belongs to the field of mechanical and building structure vibration reduction technology, and discloses a double electric field mixed electrorheological damper, which comprises a pressure measuring connector, an outer cylinder and inner cylinder assembly, a piston assembly, a nylon sleeve and an end cover. A piston is arranged in the inner cylinder through a piston rod. The piston rod can drive the inner cylinder end to be uniformly provided with a constant hole. The gap between the inner cylinder and the outer cylinder forms a valve type electrorheological damper uniform electric field, and the gap between the piston and the inner cylinder forms a shear type electrorheological damper uniform electric field. The nylon sleeve insulates the inner cylinder and the outer cylinder, fixes the inner cylinder and limits the piston rod. The end cover fixes the inner cylinder and the nylon sleeve. The pressure measuring connector is connected to the outer cylinder for controlling the piston slip during application. The present application realizes parallel connection of the double electric field valve type electrorheological damper and the shear type electrorheological damper, suppresses the piston slip under small stroke of the damper, and has the advantages of small size, large power, high reliability, simple structure and the like.
Owner:DALIAN UNIV OF TECH

Aircraft fuselage wall panel strength test device

The invention discloses an aircraft fuselage wall panel strength test device, and belongs to the technical field of aircraft wall panel testing, the aircraft fuselage wall panel strength test device comprises a detection table, a fixed backboard, a boundary clamp, a wall panel test piece and a load test assembly, the boundary clamp realizes self-adaptive clamping by hydraulically driving a flexible clamping plate, and the flexible clamping plate is filled with electrorheological fluid; the clamping force can be accurately adjusted and the actual connection strength can be simulated by matching with an electric field generator, the load testing assembly applies a static load through a hydraulic rod, an electromagnetic coil of a load transmission rod drives a detection rod to stretch out and draw back in a reciprocating mode and applies a dynamic vibration load, and meanwhile the monitoring function is achieved; the acoustic fatigue test is realized, static, dynamic and acoustic multi-field coupling loading can be realized, ultrasonic defect detection is combined, actual working conditions are accurately simulated, the mechanical response and stability of the wallboard are comprehensively evaluated, the test accuracy and reliability are greatly improved, and powerful support is provided for research and development of the aviation wallboard.
Owner:XIAN YINGHANG MASCH MFG CO LTD

Flexible packaging body for improving stability of electrorheological fluid and preparation method thereof

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.
Owner:SHENZHEN MSU-BIT UNIVERSITY

Film evaporator

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.
Owner:HAINAN JIAJIAKANG MEDICAL TECH CO LTD

Numerical control milling machine for machining supercharger parts

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.
Owner:FENGCHENG PACIFIC SHENLONG TURBOCHARGER CO LTD

Multi-stage voltage adjustable electrorheological fluid damping device for vehicle suspension and control method

The invention belongs to the technical field of suspension control, and discloses a multistage voltage adjustable electrorheological fluid damping device for a vehicle suspension and a control method. The method comprises the steps of scanning a front pavement to obtain pavement characteristic parameters, and inputting the parameters into a mode analysis model to obtain a pavement mode; at the sound wave emission moment, an ultrasonic induced electrorheological fluid pre-structure is emitted according to sound wave parameters corresponding to the pavement mode, and a corresponding pre-structure form and pre-yield stress are obtained; n-level voltage parameters and target damping force are obtained based on the pavement mode and pre-yield stress division, an N-level power source is controlled to execute the N-level voltage parameters, real-time damping force is obtained through calculation and corrected, and the damping force is corrected in real time to the target damping force through feedback adjustment; the breakthrough from passive response to active pre-judgment is achieved, electrorheological fluid pre-structuring and damping force adjustment can be completed in advance on an extreme continuous bumpy road surface, response delay is avoided, and the vibration transmissibility is remarkably reduced.
Owner:HUBEI DONGFENG JIEXIANG AUTOMOTIVE SHOCK ABSORBER CO LTD

Perching device for unmanned aerial vehicle, unmanned aerial vehicle

ActiveCN119953605BElastomerFlight vehicle
The present application relates to a habitat device for an unmanned aerial vehicle and an unmanned aerial vehicle. The habitat device comprises an adhesion device directly or indirectly connected to the unmanned aerial vehicle, a voltage booster configured to provide an electric field to the adhesion device, and an electrical isolator configured to electrically isolate the voltage booster from the unmanned aerial vehicle. The adhesion device comprises a first encapsulation layer; a second encapsulation layer connected to the first encapsulation layer and forming a fluid seal with the first encapsulation layer, the second encapsulation layer forming a chamber adapted to contain a material selected from one of an electrorheological fluid, an electrorheological gel, or an electrorheological elastomer; a first conductive layer covering at least a portion of the first encapsulation layer; a second conductive layer covering at least a portion of the second encapsulation layer; a first adhesion layer covering the first conductive layer. The material for the first adhesion layer is an insulating material with low tensile modulus and low surface energy. The habitat device of the present application enables the habitat of the unmanned aerial vehicle on a variety of surfaces.
Owner:TSINGHUA UNIVERSITY

Rigid-flexible matrix digital controllable intelligent material and preparation method thereof

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.
Owner:NINGBO SHENGHE ZHILIAN MOTOR CO LTD

Electrorheological fluid based tunable damper capsule isolation system

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.
Owner:TIANJIN UNIV