49results about How to "Adjust damping" patented technology

The invention relates to a car collision cushioning device and a cushioning energy-absorbing method based on the magnetorheological technology. The cushioning device comprises a bumper, a magnetorheological buffer and a feedback circuit, wherein the magnetorheological buffer is arranged between the bumper and a frame cross member by flanges and composed of a helical spring, a field core, a piston, a piston rod, a cylinder, magnetorheological fluid, a first actuating coil, a magnetorheological elastomer and a second actuating coil, the feedback circuit is composed of a first acceleration sensor, a second acceleration sensor and a controller, in an instant of car collision, the controller judges whether the acceleration signal differential value of the acceleration sensor exceeds a preset threshold value or not, and regulates current output to the first actuating coil and the second actuating coil by self-adapting according to difference of collision speed, changes rigidity and damp of a car collision cushioning system, thereby reducing passenger injury and car damage caused by collision.

The invention discloses a semi-active magnetic-current variable-piezoelectric feedback type damper, comprising an inner tube and an outer tube. A revolving shaft is arranged in the middle of the innertube, and is fixedly connected with two vanes which are arranged by the angle of 180 degrees in the inner tube. The vanes are hollow and provided with mass blocks inside respectively, the upper and lower ends of each mass block are connected with the inner wall of the corresponding vane through springs. Two thin plates are arranged in the inner tubes and perpendicular to the vanes respectively. The cavity of the inner tube is filled with magnetorheological fluid. Piezoelectric generator units are respectively arranged on the surfaces of the thin plates, and pressure sensors are respectively arranged at the tops of the piezoelectric generator units. The outer wall of the inner tube is wound with a field coil along the axis direction. The pressure sensors, the field coil, a controller and an electric power extracting and storing unit are in series connection to form a closed loop, wherein the controller and the electric power extracting and storing unit are arranged at the top of the inner tube.

The invention discloses a multi-layer bubbled foil radial dynamic pressure gas bearing, which comprises a bearing block and a shaft which is arranged in the bearing block, wherein the inner side of the bearing block is provided with an elastic supporting component; the elastic supporting component comprises multi-layer elastic bubbled elements arranged on the inner side of the bearing block and a top flat foil arranged between the elastic bubbled elements and the shaft; the top flat foil is attached to the elastic bubbled elements; a shell-shaped bulge with a continuous surface fillet is arranged on each layer of elastic bubbled elements; and one end of the elastic supporting component is fixed on the bearing block through a positioning element, and the other end of the elastic supporting component is free. The multi-layer bubbled foil radial dynamic pressure gas bearing is novel in structure, can generate timely and effective deformation, has adjustable local and integral rigidity and damping height, and has high load adaptability and excellent stability.

The invention discloses a self-powered type magneto-rheological damping device which comprises an outer barrel, wherein two inner barrels are fixed in the outer barrel, and the insides of the inner barrels are hollow to form damping cavities; a ball screw pair is arranged between the inner barrel, rigid rods are respectively connected to the two ends of the ball screw pair, and the two rigid rodspenetrate through the damping cavities to be connected with an inner wall of the outer barrel; a plurality of blades are fixedly arranged on the parts, in the damping cavities, of the rigid rods, theinner barrels are filled with magneto-rheological fluid, and the outsides of the inner barrels are wound by electrified coils; a movable device connected with the ball screw pair is arranged under theball screw pair, a mass block is arranged in the movable device, steel plates are arranged at the two sides of the mass block, magnets are arranged on a lateral wall of the movable device, and the steel plates are located among adjacent magnets; rotors are in interference fixed connection to the peripheries of the rigid rods, and each rotor is composed of a permanent magnet and a rotor magnet yoke; a stator core is arranged at the periphery of each rotor, a stator winding is arranged on each stator core, a stator shell is fixedly connected to the outside of each stator, and the stator shellsfixedly contact outer walls of the inner barrels.

The invention relates to a gear system (1) comprising a main gear (2) and a gear (4) rotatable relative thereto in circumferential direction (3), comprising spring elements (8), by means of which the rotatable gear (4) is pretensioned in circumferential direction (3) against the main gear (2), wherein the spring elements (8) are connected on the one hand to the main gear (2) and on the other hand to the rotatable gear (4), and wherein the spring elements (8) each have a longitudinal middle axis (19) running obliquely relative to an axial end face (18) of the rotatable gear (4).

The present invention discloses a wide temperature range and high damping ethylene-propylene-diene-terpolymer rubber preparation method. The wide temperature range and high damping ethylene-propylene-diene-terpolymer rubber comprises the following raw materials: ethylene-propylene-diene-terpolymer rubber, dicumyl peroxide, zinc oxide and stearic acid. According to the present invention, reasonable matching of various raw materials is adopted, such that the rubber is easily mixed, and the obtained mixing rubber has characteristics of softness, good processing property and good model fluidity; and an undervulcanization technology means is adopted to increase a temperature range of the damping EPDM, and a damping performance of the damping material can be adjusted by changing the undervulcanization degree so as to meet different requirements.

The invention discloses a semi-active magneto-rheological tuned mass damper. The semi-active magneto-rheological tuned mass damper comprises a barrel body; a connection block is arranged in a bottom plate of the barrel body; and a working cylinder is fixed to the connection block. Separation plates are arranged in the working cylinder, and the working cylinder is divided into a center cavity, damping cavities and side cavities. The center cavity is internally provided with a mass block capable of horizontally moving in the axis direction of the axis of the working cylinder. The center of the mass block is provided with a groove and a rolling bearing, and the periphery of the mass block is connected with piston rods capable of sliding along the rolling bearing. The damping cavities are internally provided with pistons, and the pistons are fixedly connected to the piston rods. The piston rods penetrate through holes reserved in the partition plates, extend into the side cavities and areconnected with one ends of springs in the side cavities. The other ends of the springs are fixedly connected into the working cylinder. The damping cavities are filled with magneto-rheological fluid,and powered-on coils are wound around the damping cavities. The powered-on coils are connected with an induction control device inside the barrel body.

The invention discloses a temperature-controlled intelligent tuned inertial mass damper. The damper is composed of two parts, namely a working cavity temperature control part and a main damper body part. The working cavity temperature control part comprises a temperature monitoring part and a temperature adjusting part. The main damper body part comprises an SMA spring and an inertial mass damperbody connected with the SMA spring through a rack, the rack is connected with a driving gear, the driving gear is in contact with a follow-up flywheel, the follow-up flywheel is connected with a cylinder, and the cylinder is located in a box body filled with viscous liquid. According to the temperature-controlled intelligent tuned inertial mass damper, the inertia force of the damper body can be increased by converting axial motion into rotary motion, and on the premise of ensuring the damping effect, the mass of the damper body is reduced. The damping and stiffness of the SMA spring can alsobe adjusted in real time by changing the temperature, so that the damper body has the stable working performance in a wide frequency domain, and therefore the good damping effect is achieved.

The invention discloses a vibration isolator adjustable in damping and rigidity. The vibration isolator comprises damping adjusting systems, a rigidity adjusting system, an upper vibration isolation plate and a lower vibration isolation plate; the two ends of the damping adjusting systems are connected with the ends of the upper vibration isolation plate and the lower vibration isolation plate; one end of the rigidity adjusting system is embedded in the middle of the upper vibration isolation plate, and the other end of the damping adjusting system is fixed to the middle of the lower vibrationisolation plate; and the damping characteristic of the damping adjusting systems and the rigidity of the rigidity adjusting system can be adjusted between the upper vibration isolation plate and thelower vibration isolation plate. The vibration isolator adjustable in damping and rigidity has the advantages of being simple and compact in structure, high in adjusting flexibility and carrying capacity and excellent in vibration isolation.

The invention discloses an elastic mechanism used for a suspension. The elastic mechanism is characterized in that peripheral-distribution power springs and a gear drive mechanism are used, the torqueof the power springs is increased to meet the demand of vehicle suspension elastic elements for torque, the size and the weight of the suspension elastic elements are reduced, and the elastic mechanism is structurally composed of the power springs 1, an installing base plate 4, a planetary gear 10, an inner tooth ring 12 and a motor 20, is suitable for suspensions of passenger vehicles, railway vehicles and engineering vehicles, and is particularly suitable for suspensions of electric automobiles.

The invention discloses an assembly-type variable-damping variable-stiffness viscoelastic damper and an anti-seismic method thereof. The damper comprises two end viscoelastic damper bodies, the two end viscoelastic damper bodies are arranged coaxially, and a plurality of viscoelastic damper units are connected in series between the two end viscoelastic damper bodies in the axial direction of the two end viscoelastic damper bodies. Each end viscoelastic damper body comprises an end outer barrel and an end inner barrel. A viscoelastic material layer is arranged between the inner wall of each endouter barrel and the outer wall of the corresponding end inner barrel. Each viscoelastic damper unit comprises a unit outer barrel and a unit inner barrel. A viscoelastic material layer is arranged between the inner wall of each unit outer barrel and the outer wall of the corresponding unit inner barrel. Each end outer barrel and the corresponding unit outer barrel as well as the every two unit outer barrels are detachably connected to form a rigid outer barrel of the assembly-type variable-damping variable-stiffness viscoelastic damper. Each end inner barrel and the corresponding unit innerbarrel as well as the every two unit inner barrels are elastically connected through elastic connecting pieces.

The invention provides a vibrating diaphragm, which comprises a vibrating part and a plurality of supporting parts connected with the vibrating part, wherein the peripheries of self-vibrating parts of the supporting parts extend outwards. The vibrating diaphragm also comprises at least one central line, and all the supporting parts are positioned on the same side of the central line. The vibrating diaphragm can improve sensibility.

The invention relates to a seat suspension damp adjusting method and a seat suspension. The seat suspension comprises a fixed substrate, a seat mounting plate, a shear-type support, an electromagnetic force generator, a detector, an adjustable resistor and a processor; the seat mounting plate is connected with the fixed substrate through the shear-type support in a floating manner, the electromagnetic force generator is connected with the shear-type support, the detector detects displacement and/or accelerated speed of the seat mounting plate, the adjustable resistor and the electromagnetic force generator are serially connected to form an electrical connection circuit, the processor is electrically connected with the adjustable resistor and the detector to form a control circuit, the processor calculates target resistance of the adjustable resistor according to the displacement and/or accelerated speed, resistance of the adjustable resistor is equal to the target resistance, and inverse electromagnetic moment output by the electromagnetic force generator is then adjusted. By the arrangement, use of a magneto-rheological fluid damper is avoided, sealing of operating fluid is not needed, and damp of the seat suspension can be adjusted in real time.

The invention discloses a high-damping rubber material and a preparation method thereof. The method comprises the following steps: carrying out a grafting reaction to introduce multiple hydrogen bond units or metal ligands to the molecular chain of rubber, adding a vulcanizing bag, blending the rubber and the vulcanizing bag to obtain a mixed compound, and carrying out hot press vulcanization to obtain the high-damping rubber material. The high-damping rubber material greatly improves the damping performance of a rubber material, and substantially improves the physical and mechanical performances of the rubber material. The method has the advantages of simple process, low cost, no extra processing devices or tedious steps, and important prospect in the preparation of damping engineering materials with high mechanical performances.

The invention relates to a method for using a flow rate regulating device for nursing. The liquid flow rate regulating device is used to regulate the flow rate. The liquid flow rate regulating device includes an infusion tube and a side regulating device; the regulating method includes the following steps: Step 1, assembling : Step 1.1, assembling the speed regulating plunger; Step 1.2, placing the adjusting bolt, adjusting washer, and compression spring; Step 1.3, assembling the upper limit piece; Step 2. Infusion; Step 3. Adjusting the flow rate; Step 4. Give the drug quickly. The liquid flow rate regulating device used in the present invention has a reasonable structure, is convenient for mass production, and is convenient and simple to assemble; the method of the present invention can adjust the rate of infusion under normal conditions; the method can also be used in emergency situations. Adjusting the pressing damping of the speed-regulating plunger can further close the rapid drug delivery function; this method can further prevent long-term rapid drug delivery by delaying the alarm, causing drug overdose.

The invention discloses a damping-adjustable shock absorber. The damping-adjustable shock absorber comprises a liquid storage barrel, wherein a working cylinder is arranged in the liquid storage barrel, and a piston rod is movably arranged in the working cylinder; and the damping-adjustable shock absorber is characterized in that a first flow channel is formed in the working cylinder and communicated with a second flow channel in the liquid storage barrel, a circulation hole is formed in one end of the second flow channel, the circulating hole is communicated with a liquid storage groove in the liquid storage cylinder, a rotating part is arranged at the position corresponding to the circulating hole, the rotating part is rotatably arranged in a mounting base, the side wall of the bottom end of the rotating part can partially shield the circulating hole, and the bottom end of the rotating part is provided with an inclined plane. The damping-adjusting shock absorber is simple in structure, reasonable in design and capable of conveniently adjusting damping of the shock absorber.

The invention relates to a nursing liquid flow rate adjusting device which comprises an infusion tube and a side adjusting device. A side branch tube is arranged on a side surface of the infusion tube, a fixing bottom ring is arranged at the tail end of the side branch tube, external threads are arranged on the outer wall of the fixing bottom ring, and an accommodating groove is formed in the inner wall of the side, which is far away from the side branch tube, of the infusion tube; the side adjusting device comprises an upper limit component, a speed adjusting insertion rod, an adjusting cushion ring, adjusting bolts and a compression spring. The nursing liquid flow rate adjusting device has the advantages that the nursing liquid flow rate adjusting device is reasonable in structure and convenient and easy to assemble, and batch production can be facilitated; the infusion rate can be adjusted in normal stage; medicines can be quickly administered in emergency states, compression damping of the speed adjusting insertion rod further can be adjusted, and quick medicine administration functions further can be disabled; excessive medicines due to quick medicine administration for long time can be prevented by delayed alarm.

The invention relates to a borehole trajectory tracking short section damping device used in the field of horizontal well drilling. According to the technical scheme, the device consists of a pressure-resistant wall, a top sealing cover, a pentagonal hole cylinder, a passive variable damping rubber air bag damper, quartz accelerometers, a gyroscope and a main controller; the pentagonal hole cylinder is arranged in a short section; the passive variable damping rubber air bag damper with the main controller, the gyroscope and three groups of accelerometers is respectively arranged in five rectangular holes; the main controller, the gyroscope and the three groups of accelerometers are arranged in the radial direction; and the passive variable damping rubber air bag damper consists of a semi-cylindrical rubber air bag, a thin rubber pipe and a rubber film. According to the damping device, damping of the rubber air bag is effectively adjusted through flowing of air, the better damping effect is achieved while the safety of the rubber air bag is improved, the structure is simple, installation is easy, and the damping capacity of the short section is greatly improved.

The invention discloses a glucometer test paper automatic fixing method, which uses a test paper automatic clamping type glucometer, the glucometer comprises a built-in chamber arranged at the front end of the glucometer, and the left side of the front end of the built-in chamber is provided with a test paper socket for inserting test paper. The left half part of the built-in cavity is provided with a test paper flitch plate for restraining test paper along the front-back direction; the test paper clamping device further comprises a clamping assembly, an energy storage push rod and a swing lock catch; the fixing method comprises the following steps: step 1, inserting test paper: inserting the test paper into a test paper socket from front to back, and tightly attaching the test paper between a test paper pasting plate and the left end surface of a built-in cavity; step 2, clamping the test paper: step 2.1, unlocking the swing lock catch, and further releasing the energy storage push rod; 2.2, an energy storage push rod drives a clamping assembly to clamp the test paper; 2.3, the test paper abuts against the swing lock catch.

The invention belongs to a spherical joint mechanism with a locking function. The spherical joint mechanism is provided with a shell, and a moving mechanism composed of a spherical joint, a transverseguiding block and a longitudinal guiding block and a locking mechanism composed of spherical joint bases, a locking driving lever and a locking threaded rod are arranged in the shell; a bulb is arranged at one end of the spherical joint, and an operation driving lever is arranged at the other end of the spherical joint; the transverse guiding block and the longitudinal guiding block are each of asemicircular-arc structure; the two ends of the transverse guiding block and the two ends of the longitudinal guiding block are movably connected with the shell and arranged in a perpendicularly-crossed mode; the middle of the transverse guiding block and the middle of the longitudinal guiding block are provided with a transverse guiding groove and a longitudinal guiding groove respectively; andthe operation driving lever penetrates through the transverse guiding groove and the longitudinal guiding groove and then stretches out of the shell. According to the spherical joint mechanism with the locking function, the locking function is achieved through the simple mechanical structure, electronic control is not needed, and moving damping of the spherical joint can be adjusted by adjusting the distance between the two spherical joint bases.

The application discloses a safety type circuit breaker. The safety type circuit breaker comprises a circuit breaker main body and self-protection wiring terminals. The self-protection wiring terminals are symmetrically arranged on the left side, the right side, the front side and the rear side of the circuit breaker main body; and each self-protection wiring terminal at least comprises a terminalcavity, an opening and closing device, a wire clamping terminal and an operating device. According to the safety type circuit breaker, the opening and closing device is closed in a normal state so asto protect the wiring jack from entering sundries; during wiring, the opening and closing device is firstly opened to expose the wiring jack, then the opening and closing device is closed again afterwiring is completed; at the moment, the opening and closing device cannot be completely closed, and only a swing baffle of the opening and closing device needs to clamp a wire. The safety type circuit breaker provided by the invention is simple to operate. Opening and closing of the opening and closing device can be achieved through an operation handle, and clamping of the wire clamping terminalcan also be achieved through the operation handle. According to the safety type circuit breaker, the damping of leftward movement of the operating device can be adjusted.

The invention discloses a damping-adjustable air bag shock absorber which comprises a shock absorber body and an air bag device connected with the shock absorber, and an adjusting assembly used for adjusting damping is arranged on the air bag device. The adjusting assembly comprises a thread arranged on the shock absorber body, a sealing piece arranged on the air bag device and a thread arranged on the air bag device and matched with the shock absorber body. The air bag device is connected with the shock absorber body through threads, and the air bag device and the shock absorber body are sealed through a sealing piece. The thread stroke on the air bag device is matched with the thread stroke on the shock absorber body, and damping in the air bag device is adjusted through the threaded connection depth of the air bag device and the shock absorber body. According to the damping-adjustable air bag shock absorber, the damping adjusting effect can be provided under the condition of avoiding oil leakage.

A railway vehicle wheel (1) comprises a hub (2) and a tire (3) carrying a flange (6), which hub and tire are mutually connected by means of a disc (13) or a number of spokes. The tire (3) comprises a thin visco-elastic layer (8) for dissipating vibrations originating from the contact of the railway vehicle wheel (1) with a railway track (7), characterized in that, the order of magnitude of the thickness for the visco-elastic layer (8) is smaller than that of the tire (3).