39results about How to "Absorb vibrational energy" patented technology

A piezoelectric actuator includes a square suspension plate, an outer frame, plural brackets and a square piezoelectric ceramic plate. The outer frame is arranged around the suspension plate. A second surface of the outer frame and a second surface of the suspension plate are coplanar with each other. The plural brackets are perpendicularly connected between the suspension plate and the outer frame for elastically supporting the suspension plate. Each bracket has a length in a range between 1.11 mm and 1.21 mm and a width in a range between 0.2 mm and 0.6 mm. A length of the piezoelectric ceramic plate is not larger than a length of the suspension plate. The piezoelectric ceramic plate is attached on a first surface of the suspension plate.

The invention relates to an adjustable damping type vibration-attenuation and chatter-suppression device in the milling process of thin-walled workpieces and a vibration-attenuation method. According to a conventional vibration-attenuation device for thin-walled workpieces, the functions of suppressing blade chatter and attenuating vibration are majorly achieved by modifying and optimizing machining tools, work fixtures and machining cutters or positioning the cutters, arranging machining processes and the like; but the effects are unsatisfactory or limited, and economic input is often large. The adjustable damping type vibration-attenuation and chatter-suppression device in the milling process of the thin-walled workpieces comprises a vibration-attenuation and chatter-suppression unit (9) which comprises a seal chamber (8); a top plate (1) is mounted on the upper plane of the seal chamber; the outer layer of the seal chamber is a restraint layer (7) which is internally provided with a damping layer (6); a damping layer base plate (5) is mounted inside the damping layer and contains magnetorheological fluid (3) inside; six permanent magnets (2) are mounted in the magnetorheological fluid (3); and a coil (4) is wound outside each permanent magnet. The adjustable damping type vibration-attenuation and chatter-suppression device is used in the milling process of the thin-walled workpieces.

The invention provides a shock absorbing rubber material used for a transformer. The rubber material is prepared from, by mass, 30-50 parts of butadiene-acrylonitrile rubber, 20-50 parts of hydrogenated butadiene-acrylonitrile rubber, 20-30 parts of carboxylic acrylonitrile butadiene rubber, 20-30 parts of polyvinyl chloride, 1-3 parts of vulcanizers, 3-8 parts of active agents, 1-3 parts of accelerators, 1-3 parts of anti-aging agents, 2-8 parts of plasticizers, 0.5-2 parts of heat stabilizers and 5-30 parts of reinforcing filler. The rubber material is resistant to oil and high temperature, and has a wide damping temperature range and excellent mechanical performance.

A piezoelectric actuator includes a square suspension plate, an outer frame, plural brackets and a square piezoelectric ceramic plate. The outer frame is arranged around the suspension plate. A second surface of the outer frame and a second surface of the suspension plate are coplanar with each other. The plural brackets are perpendicularly connected between the suspension plate and the outer frame for elastically supporting the suspension plate. Each bracket has a length in a range between 1.11 mm and 1.21 mm and a width in a range between 0.2 mm and 0.6 mm. A length of the piezoelectric ceramic plate is not larger than a length of the suspension plate. The piezoelectric ceramic plate is attached on a first surface of the suspension plate.

The present invention relates to use of a porous broken stone in preparation of vibration damping function concrete; and the porous broken stone is selected from any one or a variety of porous broken stones in any weight ratio of porous basalt broken stone, porous limestone broken stone and porous granite broken stone. The invention also provides a concrete composition using the porous broken stone as a coarse aggregate and application thereof in preparation of prestressed concrete sleepers. The concrete composition comprises 100 parts by weight of cement, 5-50 parts by weight of fly ash, 100-200 parts by weight of a fine aggregate, 200-380 parts by weight of the coarse aggregate, 0.05-2 parts by weight of a viscosity modifier, 0.05-2 parts by weight of a pore refiner and 0.8-4.0 parts by weight of a water reducing agent. After hardening of fresh mixed concrete prepared from the concrete composition, internal pore distribution is reasonable, strength requirements are met, and at the same time, the fresh mixed concrete has a high damping ratio so as to solve the poor vibration effect problems of conventional prestressed concrete sleepers.

The invention discloses a socket clevis magnetorheological damper. The socket clevis magnetorheological damper comprises a cylinder body and a socket seat A connected above the cylinder body. A coil and a piston are arranged in the cylinder body. The space among the coil, the cylinder body and the piston is full of magnetorheological fluid. A shielding cover is arranged outside the cylinder body. When the magnetorheological damper is applied to a power transmission line anti-vibration device, the problems that an existing damper is simplex in anti-vibration frequency and not variable in damping are solved. The invention further discloses the power transmission line anti-vibration device using the socket clevis magnetorheological damper. The power transmission line anti-vibration device comprises a wire vibration collecting unit, a socket clevis magnetorheological damper adjustment unit and the socket clevis magnetorheological damper which are connected in sequence. The invention further discloses a power transmission line anti-vibration method. The power transmission line anti-vibration method specially includes the steps that a device system is initialized; the wire vibration collecting unit collects the vibration amplitude value and the frequency value and sends the data; a magnetorheological damper controller receives the wire vibration amplitude value and the frequency value and enables a current control circuit to work; and the adjustment function is realized, and therefore vibration is prevented.

The invention provides a solid die forging crescent shaped suspension wiring clip, which comprises a wiring clip body with a U-shaped cross section, a U-shaped hanging plate, a connecting bolt, a U-shaped bolt, a tension disc and a pin. The edge position of the wiring clip body adopts a large curvature lip and smooth arc transition to increase a charge concentrated area at a wiring outlet, so that corona discharge phenomenon which easily happens previously can be greatly reduced, and the wiring clip has excellent corona discharge resistance. A wiring clip shell adopts a crescent shape to ensure that stress concentration of the original cable and the wiring clip body due to gravitational factor can be eliminated or reduced. The edge of the U-shaped hanging plate is in smooth arc transition, so that the corona discharge phenomenon which easily happens previously can be greatly reduced. The center point of the pin is higher than a quality center point of the wiring clip body, so that the wiring clip body can swing flexibly to absorb vibrational energy transferred from a lead wire. By adopting the solid die forging process, destroy load of the wiring clip is greatly improved. The invention has the advantages of smart design, good use effect and high strength, improves security and reliability of power high-tension transmission line, and can meet the requirement of line operation.

The invention discloses a rotor supporting structure of a high speed electric rotary machine. Two end parts of radical sliding bearings at journals of two ends of a rotor are sheathed with a pair of angular contact ball bearings, constant-pressure prestressing is adopted between the two ball bearings, the two balling bearings are embedded in a floating bush, and the outer side end of the floating bush is provided with a check ring and a stop dog to limit the floating bush from moving and rotating along the axial direction and enable the floating bush to be loaded in a bearing seat hole with a certain fit clearance to be in a semi-floating state, thus forming a semi-floating rolling-sliding double bearing. When the high power high speed electric rotary machine adopting the rotor supporting structure of the invention is arranged in a vehicle which runs high speed of above 60000r / min, due to the action of the semi-floating rolling-sliding double bearing, the system can be stably and reliably operated.

The invention discloses an elevator steel wire rope tension automatic regulation system which comprises a plurality of cylinder bodies. A piston is mounted in each cylinder body; each piston is fixed to a tail end pull rod of one elevator steel wire rope and can freely move in the corresponding cylinder body; an inner cavity is formed by each piston and the corresponding cylinder body; and all the inner cavities are communicated mutually and are filled with liquid for transferring a pressure to form a closed communicated liquid system. Tensions of the steel wire ropes are acted on the pistons by the tail end pull rods and generate a certain pressure on liquid in the inner cavities by the pistons, the inner cavities of all the cylinder bodies are communicated, and thus, according to a principle that the liquid can transfer the pressure towards each direction in a size unchanged manner, liquid pressures in different inner cavities connected together finally reach a dynamic balance to enable acting forces of the liquid on different pistons to be equal, so that automatic regulation on the tensions of all the steel wire ropes is achieved. According to the invention, uniformity of the tension of each steel wire rope is achieved, wear to the steel wire ropes greatly stressed and grooves matched with the steel wire ropes greatly stressed is reduced, and the elevator steel wire rope tension automatic regulation system is beneficial for prolonging the service life of an elevator traction system.

The invention provides a device for measuring length of a transverse cutting machine. The device comprises a bracket, a gas cylinder component, and a limitation piece, wherein the front end of the gas cylinder component is fixed on a length-measuring wheel seat by a gas cylinder joint seat, the length-measuring wheel seat is hinged on a bearing with a pedestal by a pendulum shaft, and the bearing with the pedestal is arranged at the lower end of the bracket; the limitation piece is contacted with the gas cylinder joint seat of the gas cylinder component; and a length-measuring wheel is hinged on the length-measuring wheel seat by two bearings on a length-measuring wheel shaft, and the length-measuring wheel seat is also provided with an encoder. With the adopted structure, air pressure in the gas cylinder component can be on-line adjusted; when the air pressure decreases, the pressure of the length-measuring wheel on a paper board increases, otherwise the pressure of the length-measuring wheel on the paper board decreases; when the pressure of the length-measuring wheel on the paper board is decreased to less than zero, the length-measuring wheel is lifted out of the paper surface; and due to the assembly of the elastic limitation piece and the gas cylinder inner spring, the gas cylinder inner spring can make the length-measuring wheel always apply a certain pressure on the paper board, and the limitation piece and the spring can both effectively absorb the vibrational energy generated when the length-measuring wheel and the paper board move, so that the length-measuring wheel and the paper board are always kept synchronous, and the measuring accuracy of the length-measuring wheel is ensured.

The invention relates to a shock absorber of a seat type lamp, which belongs to the technical flied of lamp illumination. The shock absorber of the seat type lamp comprises a shock-absorbing elastic part, wherein a rigid outer cover fixedly connected with the bracket of the seat type lamp is sleeved outside the upper part of the shock-absorbing elastic part, the rigid outer cover is lower than the shock-absorbing elastic part, a groove is arranged at the bottom of the shock-absorbing elastic part, a flexible rigid inside lining is sleeved in the groove, and the rigid outer cover is fixedly connected with the rigid inside lining. The invention provides the shock absorber of the seat type lamp, which has simple structural design and good shock-absorbing performance.

A miniature fluid control device includes a piezoelectric actuator, a gas collecting plate and a base. The piezoelectric actuator includes a suspension plate, an outer frame, at least one bracket and a piezoelectric ceramic plate. The suspension plate is a square plate. The outer frame is arranged around the suspension plate. A surface of the outer frame and a surface of the suspension plate are coplanar with each other. The gas collecting plate is a frame body with an accommodation space. The base includes a gas inlet plate and a resonance plate. The base is disposed within the accommodation space to seal the piezoelectric actuator. An adhesive layer is arranged between the second surface of the outer frame of the piezoelectric actuator and the resonance plate. Consequently, a depth of a compressible chamber between the piezoelectric actuator and the resonance plate is maintained.

The invention discloses a stainless steel insulating pipe for a solar heat collector. The stainless steel insulating pipe comprises an L-shaped stainless steel inner pipe, wherein one end of the L-shaped stainless steel inner pipe is provided with a flange plate connected with an oil way, the other end of the L-shaped stainless steel inner pipe is a vacuum pipe connecting end, two layers of corrugated pipes are sleeved outside the stainless steel inner pipe, close to the flange disc; and an air gel layer is arranged between the two layers of corrugated pipes, a stainless steel outer pipe is sleeved outside the other part of the stainless steel inner pipe, and the air gel layer is filled between the stainless steel outer pipe and the stainless steel inner pipe. The stainless steel insulating pipe provided by the invention has the beneficial effects that the heat preservation effect is good, the construction is convenient and rapid, the energy consumption is low, the mutual displacement of a pipeline or a machine and an equipment connecting end are compensated, the vibration energy is absorbed, and the stainless steel insulating pipe can play roles of vibration damping and noise reduction and the like; and the stainless steel insulating pipe has multiple properties such as good flexibility, small mass, corrosion resistance, fatigue resistance, and high temperature and low temperature resistance.

A vegetable oil-based cartilage bionic cushioning and shock-absorbing material, and a preparation method and use thereof, is provided. The vegetable oil-based cartilage bionic cushioning and shock-absorbing material is prepared from a premix A and an isocyanate mixture B; the premix A including a vegetable oil-based modified polyol, a type 1 polyether polyol, a type 2 polyether polyol, a polymer polyol, a surfactant, a foaming agent, a chain extender, a catalyst and a cell regulator; the type 1 polyether polyol is a polyether polyol with a molecular weight of 400-1000 and a hydroxyl value of 110-280 mgKOH / g; and the type 2 polyether polyol is a polyether polyol with a molecular weight of 1000-10000 and a hydroxyl value of 25-56 mg KOH / g. The material provided by the present invention is environment-friendly and breathable with open cells, and has a high cushioning effect and a low permanent compression set value.

The invention relates to the field of transmission lines, in particular to a vibration-proofdevice for high-voltage transmission lines. The technical problem to be solved is to provide a vibration-proof hammer filled with gas and two kinds of damping fluids, which is not liable to be loosened and displaced, can adapt to various vibration frequencies, has the function of warning identification, prevents the aircraft from accidental collision, and can provide the positioning mark for the aircraft. The technical scheme adopted to solve the technical problem is as follows: the double-layer vibration-proof hammer comprises a hammer body, a wire clamp, a steel strand, and a connecting plate. The hammer body is divided into two layers of an upper hammer body and a lower hammer body, the upper hammer body is two, the lower hammer body is two, and the steel strand comprises an upper steel strand and a lower steel strand; the upper steel strand and the lower steel strand are arranged on the connecting plate in parallel; at the joint of the hammer body and the steel strand wire, a waterproof gasket is arranged; The invention is applied to the installation of high-voltage wires.

The invention relates to the technical field of new energy batteries, in particular to a new energy battery box containing a water-based stone-impact-resistant coating, the new energy battery box comprises an upper box body and a lower box body connected with the upper box body, the inner wall of the upper box body is sequentially compounded with a first stone-impact-resistant water-based damping coating and a first normal-temperature high-performance water-based damping coating, a second stone-impact prevention water-based damping coating and a second normal-temperature high-performance water-based damping coating are sequentially compounded on the inner wall of the lower box body; when the upper box body is hit by stones, the viscoelasticity of the first stone-hit-preventing water-based damping coating and the first normal-temperature high-performance water-based damping coating can effectively absorb destructive force generated by stone hit through the upper box body, vibration energy is absorbed, vibration waves and sound waves are weakened, the mechanical vibration attenuation effect is effectively improved, noise is reduced, stone impact is prevented, the situation that stones directly hit the coating to damage the coating is avoided, and therefore the service life is prolonged, and the anti-fatigue effect is improved.

The height-adjustable elevator damping device comprises an elevator car, a top plate is horizontally arranged in the elevator car, a noise reduction sleeve is arranged at the upper end of a first damping pad, noise is greatly reduced, an electric telescopic rod is controlled to stretch out and draw back to drive a sliding block to move in a sliding groove, and therefore a connecting rod is driven to move; the top plate can be lifted, the surface of the car wall of the elevator car is coated with the damping coating layer, vibration energy generated by lifting and stopping of the elevator car can be absorbed, the amplitude and noise are reduced, the good damping effect is achieved, impact energy transmitted by the top plate is effectively absorbed by arranging the air bag damper, and the service life of the elevator car is prolonged. The damping device effectively improves the buffering strength and effectively eliminates low-frequency vibration, enables the elevator car to run stably, effectively improves the riding comfort of passengers, is novel in structure, adopts multiple sets of damping assemblies, and is good in damping effect and high in practicability.

The invention discloses a compressor assembly and a refrigerator with the compressor assembly. The compressor assembly comprises a compressor body and a plurality of oil pressure feet arranged on thebottom part of the compressor body and used for supporting the compressor body, wherein each oil pressure foot comprises a cylinder body fixedly arranged relative to the compressor body and provided with an oil storage cavity formed inside, a plunger arranged in the corresponding oil cavity and capable of moving up and down relative to the corresponding cylinder body, and a fixing foot connected under the corresponding plunger; and the oil cavity of each oil pressure foot communicates with the oil cavity of the other oil pressure foot so as to enable the corresponding fixing feet to align in an up-and-down direction. According to the compressor assembly and the refrigerator with the compressor assembly provided by the invention, through the communicating oil pressure feet, the vibration energy produced during a compressor operation process can be effectively absorbed, so that the generation of a larger noise is avoided; and during an installation process of the compressor assembly, thecommunicating oil pressure feet can be adaptively adjusted, so that the fixing feet of the oil pressure feet can be simultaneously abutted against corresponding installation part positions in the refrigerator, and the compressor assembly is conveniently installed in the refrigerator.

A means for being electrically connected to an electrode of a piezo-electric plate is adapted for connecting the piezo-electric plate to a circuit board disposed under the piezo-electric plate. The piezo-electric plate and the circuit board are respectively provided with a first electrode and a second electrode corresponding to the first electrode. The means includes a conductive element and an elastic element. The conductive element includes at least two connecting surfaces electrically connected to each other and respectively electrically connected to the first electrode and the second electrode. The elastic element is joined with the conductive element and located between the piezo-electric plate and the circuit board.

The invention relates to connecting assemblies for a multi-layer modular building. The multi-layer modular building is formed by splicing a plurality of building modules arranged in a rectangular array, and the connecting assemblies are used for connecting the mutually-spliced corners of the multiple adjacent building modules; the connecting assemblies comprise box room corner fittings fixed to the mutually-spliced corners of the multiple building modules, and the box room corner fittings are each of a hollow cuboid structure; the two box room corner fittings at the mutually-spliced corners ofthe two adjacent building modules at the same layer are detachably connected through horizontal lock pieces; and the two box room corner fittings at the mutually-spliced corners of the two building modules at every two adjacent layers are detachably connected through vertical lock pieces. The connecting assemblies have the advantages that the structure is simple, design is reasonable, reliable connection among all the modules of the modular building can be achieved, the strength requirement of structural design is met, and meanwhile, the space requirements of on-site construction are met.

The invention discloses a structure and a method for weakening vibration of an operating mechanism through radial nonlinear transmission of waves. Centrally symmetric connecting pieces which are made of damping materials and have radial bending structures have functions that influence of vibration produced by actions of a circuit breaker operating mechanism and vibration energy transmission are weakened; the centrally symmetric connecting pieces which are made of the damping materials and have the radial bending structures are added in certain positions on a vibration wave transmission path in the operating mechanism to change the vibration wave transmission path, so that vibration waves transmitted in the vibration wave transmission path are transmitted in an annular direction. According to the bending structures, the vibration intensity is further weakened and the vibration energy is further absorbed through forming of standing waves and increase of refraction and reflection of the vibration waves. Through combination use of the damping materials and the bending structures of the centrally symmetric connecting pieces, the vibration wave transmission path is extended, and the vibration wave energy consumed by the damping materials is further increased.

The invention discloses a suspension double-buffering damper, which comprises a working cylinder and a liquid storage cylinder, wherein a piston is movably arranged in the working cylinder, and the piston is fixedly connected with a piston rod. The suspension double-buffering damper is characterized in that the middle of the working cylinder is fixedly provided with a fixing ring; the upper surface and the lower surface of the piston are fixedly provided with springs; the working cylinder consists of a first cylinder block and a second cylinder block, wherein the first cylinder block and the second cylinder block have different diameters; a transition section is arranged between the first cylinder block and the second cylinder block; the pipe body surface of the piston rod is provided with oil tanks which are arranged in a spiral line; the head part of the piston rod is provided with a buffer gear; the buffer gear comprises two sets of serial buffer cushions and buffer blocks. Compared with the prior art, the suspension double-buffering damper has the advantages of simple structure and easiness in production, the practical deformation amount of the piston can be effectively lowered, and the service life of the damper is prolonged.

The invention relates to the technical field of refrigeration equipment, in particular to a compressor damping device and a compressor device for the refrigeration equipment. The compressor damping device comprises a damping body, wherein a cavity is arranged in the damping body, damping filler is arranged in the cavity, and the damping filler can move in the cavity. After the compressor damping device is arranged on the compressor device, the weight of the compressor device can be increased, the rotational inertia of the compressor device can be increased, the vibration of the compressor device can be reduced, the damping filler reciprocates in the cavity, the vibration energy of the compressor can be effectively absorbed, and the vibration of the compressor can be reduced; and the compressor damping device and the compressor device for the refrigeration equipment are simple in structure, have a good damping effect and are beneficial to popularization.

The invention discloses a semi-active air pressure inerter-hydraulic damping combined type anti-galloping energy consumption device which comprises an outer cylinder, an inner cylinder arranged in the outer cylinder and spacer bushes fixedly installed at the two ends in the inner cylinder, the spacer bushes divide the inner cylinder into a functional cavity and a middle cavity, and the functional cavity and the middle cavity are filled with compressed gas; a first baffle is arranged on one side of the first baffle, a second baffle is arranged on the other side of the first baffle, a flow blocking cavity is formed between the first baffle and the second baffle and filled with flow blocking liquid, a plurality of impellers are arranged between the first baffle and the second baffle, a second piston is arranged on the other side of the first baffle, a plurality of ball nuts are arranged on the second piston, and the second piston, the ball nuts and the rotating rod form a ball screw pair structure. Through combination of the air pressure inerter and the liquid damping, semi-active control is realized, and conductor galloping is efficiently inhibited. Compressed air circulation gaps in the functional cavity and the middle cavity are communicated with each other, the effect of an inerter damper is achieved, the weight of the whole device is greatly reduced, the design is reasonable, installation is convenient, and the effect is obvious.