83 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 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.

The invention discloses a damper and a ship, and relates to the technical field of vibration control, the damper comprises a shell, a plurality of pole plate grooves and an oscillation mechanism, and a cavity used for containing giant electrorheological fluid is formed in the shell; the plurality of polar plate grooves are arranged in the cavity in parallel, a polar plate is detachably mounted in any polar plate groove, the polar plates comprise first polar plates and second polar plates, and the first polar plates and the second polar plates are alternately arranged at intervals in the arrangement direction of the plurality of polar plate grooves; the wiring end of any first polar plate and the wiring end of any second polar plate are both used for being externally connected with a power supply, and the output voltage of the power supply can be adjusted according to the magnitude of the required voltage difference between the polar plates; the oscillation mechanism is arranged in the cavity and can disturb the giant electrorheological fluid. The damper is easy to regulate and control in damping, high in energy dissipation capacity, good in anti-vibration effect and capable of being suitable for various working environments. The ship comprises the damper, and the ship navigation stability can be improved.

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.

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 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.

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 invention discloses a contraction structure for an awning. The contraction structure comprises a contraction assembly, an expansion assembly, awning cloth, a mounting base and a vertical sliding rail. The invention belongs to the technical field of sunshade structures, and particularly relates to a contraction structure for a sunshade. In order to solve the problem that it is difficult to reduce rainwater splashing on the premise that the shielding range of an existing telescopic sunshade is expanded, the expansion assembly is provided, rainwater can wash away electrorheological fluid originally existing in a telescopic expansion cylinder, the electrorheological fluid flows out of a second non-woven fabric layer on a bottom liquid outlet, and the rainwater can be prevented from splashing out of the second non-woven fabric layer; the first water-absorbent resin particles can absorb water and expand, the size of the telescopic expansion cylinder is expanded, the sun-shading and rain-shielding area is increased, rainwater flowing out of the two sides of the awning cloth is absorbed by means of the first water-absorbent resin particles, a large amount of rainwater cannot be splashed to the ground, and due to the property that the water is absorbed by the second water-absorbent resin particles, the water-absorbent resin particles can absorb water and expand, and the rain-shielding effect is improved. The defect that rainwater is excessively scattered on the outer edge of the awning cloth is overcome, and the use experience of a user is improved.

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.

A sole structure can include a chamber and a delivery channel containing an electrorheological fluid. Electrodes can be positioned to generate an electric field in at least a portion of the electrorheological fluid in the delivery channel in response to a voltage between the electrodes. The sole structure can further include a controller that includes a processor and a memory. At least one of the processor and the memory can store instructions executable by the processor to perform operations, the operations including maintaining the voltage between the electrodes at one or more flow-inhibiting levels at which the flow of the electrorheological fluid through the delivery channel is blocked, and the operations further including maintaining the voltage between the electrodes at one or more flow-initiation levels that permit the electrorheological fluid to flow through the delivery channel.

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.

A sole structure may include chambers and a transfer channel containing an electrorheological fluid. Electrodes may be positioned to create, in response to a voltage across the electrodes, an electrical field in at least a portion of the electrorheological fluid in the transfer channel. The sole structure may further include a controller including a processor and memory. At least one of the processor and memory may store instructions executable by the processor to perform operations that include maintaining the voltage across the electrodes at one or more flow-inhibiting levels at which flow of the electrorheological fluid the through the transfer channel is blocked, and that further include maintaining the voltage across the electrodes at one or more flow-enabling levels permitting flow of the electrorheological fluid through the transfer channel.

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 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.

The invention discloses an anti-settling chemical production impregnation tank which comprises a base, a tank body is arranged on the base, a support is fixed to the base, a stirring motor is fixed to the end of the support, a stirring pipe is vertically and downwards fixed to the driving end of the stirring motor, and multiple sets of stirring blades are fixed to the outer wall of the stirring pipe. A connecting rod is fixed to the lower side wall of the support, a round box arranged on the outer wall of the stirring pipe in a sleeving mode is fixed to the end of the connecting rod, and a transverse rod is fixed to the outer wall of the connecting rod. Stirring of butyronitrile latex is achieved through rotation of the stirring blades and rotation of the tank body, inorganic particle sedimentation is avoided, electrorheological fluid is pumped into the stirring pipe to enable the rubber bag to stretch out to scrape the bottom wall of the tank body, sedimentation is further avoided, and the stability of the butyronitrile latex is improved. And meanwhile, the flexibility and hardness switching of the rubber bag is realized by judging whether the electrorheological fluid is conductive or not, so that flexible scraping and hard scraping can be realized, and different settling degrees of inorganic particles can be adapted.

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.

Shape retaining membranes, methods of use, and end effectors using a shape retaining membrane are presented. A shape retaining membrane (202, 300, 400, 500, 600) comprises a porous substrate (204, 302, 404, 504) impregnated with an electrorheological fluid (202, 303); a pair of high voltage electrodes (208, 304, 414, 41, 514, 516) positioned on either side of the porous substrate (204, 302, 404, 504); and a skin (210, 310, 424, 524) wrapped around the porous substrate (204, 302, 404, 504) and the high voltage electrodes (208, 304, 414, 416, 514, 516).

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 utility model discloses a dismounting and mounting device for a drill rod on a vertical shaft drilling machine, which comprises a vertical shaft support, a drilling machine and a replacement structure, the replacement structure is arranged on the vertical shaft support, and the drilling machine is arranged on the vertical shaft support. The two pairs of horizontal lead screw modules are used for driving the U-shaped support to accurately and horizontally move, and then the rotating shaft pipe and the U-shaped sleeving block are driven to stably move to the position of the drill rod. Special liquid is drained to a plurality of U-shaped expansion liquid bags in a U-shaped sleeving block through an electrorheological fluid pump, and the liquid bags tightly extrude and fix the drill rod after being expanded. And after being electrified, the electrorheological fluid is quickly cured, so that the fixing effect of the liquid bag is further enhanced, and the stability of the drill rod is ensured.

The invention relates to an electrorheological shape retention film. Shape retaining films, methods of use, and end effectors using shape retaining films are presented. In one embodiment, a shape retention film comprises: a porous substrate impregnated with an electro-rheological fluid; a pair of high voltage electrodes located on either side of the porous substrate; and the skin is wrapped around the porous substrate and the pair of high-voltage electrodes.

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.

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.

Shape retaining membranes, methods of use, and end effectors using a shape retaining membrane are presented. A shape retaining membrane comprises a porous substrate impregnated with an electrorheological fluid; a pair of high voltage electrodes positioned on either side of the porous substrate; and a skin wrapped around the porous substrate and the high voltage electrodes.