125results about How to "Good vibration absorption" patented technology

The inventive vibration absorber comprises an execution unit, a control unit and a sensor. The execution unit consists of a magnetic inductor, a coil, a magnetic rheological elastic body, a vibration-absorbing mass block and a base. The above magnetic inductor consists of inner and outer sleeves, or a U-shaped iron-core and an armature or top and bottom plates and a column iron-core. Between inner and outer sleeves, the U-shaped iron-core and the armature or the top and bottom plates are filled the magnetic rheological elastic bodies. By regulating the voltage on the coil, the rigidity and the elasticity of the magnetic rheological elastic body are regulated to make its vibration frequency change, so as to make the vibration frequency of the vibration absorber execution unit is the same as that of the vibration-damping object.

In a clamp having a pair of clamp members which sandwich a plurality of pipes having cylindrical cross-sections of different diameters, each of the clamp members including an elastic body having a plurality of concave portions formed therein and a reinforcing plate fixed to an outer side surface of the elastic body, the dimensions of each portion of the elastic bodies are set such that the compression ratio of the elastic bodies with respect to all of the pipes is made the same. For example, when the diameters of two pipes having different outer diameters are made D1 and D2, the curvature radii of the concave portions of the elastic bodies are made R1 and R2, and the distances from mating faces of the elastic bodies to the reinforcing plates are made L11, . . . , L22, then the dimensions of each portion of the elastic bodies are set so as to satisfy the relationship [(D1−2R1)/(L11+L12−2R1)=(D2−2R2)/(L21+L22−2R2).

The invention discloses an automobile suspension mechanism. The automobile suspension mechanism comprises a connecting screw rod, an upper cover plate, an upper metal rubber spring, an upper mounting seat, a middle mounting plate, a lower mounting seat, a lower metal rubber spring and a lower cover plate, wherein the upper cover plate, the upper metal rubber spring, the upper mounting seat, the middle mounting plate, the lower mounting seat, the lower metal rubber spring and the lower cover plate sequentially sleeve the connecting screw rod; a rod body of the connecting screw rod is sequentially provided with a mounting part, a convex shoulder and a sleeve part, and the lower cover plate is connected with the tail end of the sleeve part through a fastening piece; the upper and lower mounting seats are respectively connected with the two faces of the middle mounting plate, the upper cover plate and the upper metal rubber spring are sequentially snapped between the convex shoulder and the upper mounting seat, and the lower metal rubber spring is snapped between the lower cover plate and the lower mounting seat; the height of the upper metal rubber spring is 1/2-1/3 that of the lower metal rubber spring. The automobile suspension mechanism has good elastic and damping properties and has the characteristics of high-/low-temperature resistance, corrosion resistance, aging difficulty, no radiation environment fear and the like; due to the adoption of graded earthquake resistance, vibration absorption, vibration isolation and noise reduction can be better realized, and provided compressive and tensile capability can be accurately matched with actual driving conditions.

The invention discloses a semi-active dynamic vibration absorber for magneto-rheological elastomers and a selection and installation method. According to the semi-active dynamic vibration absorber andthe selection and installation method, multiple layers of cross-shaped cross beams arranged in parallel are fixed to the positions below a bottom frame base located at the bottom of a railway vehiclein a suspended mode through four vertical magnetic conductive rods arranged vertically and penetrating through the four end parts of cross-shaped beam arms; multiple layers of stacked structures which are spaced from each other are formed between multiple layers of grooving vibrators and the cross-shaped cross beams; vertical mounting through holes are formed in the centers of the cross-shaped cross beams; the annular magneto-rheological elastomers are arranged between the mounting through holes and a connecting shaft of the multiple layers of grooving vibrators; the multiple layers of grooving vibrators can vibrate up and down relative to the bottom frame base in the axial direction of the mounting through holes; winding grooves are formed in the beam arms of the cross-shaped cross beams; and excitation coils are wound in the winding grooves. The semi-active dynamic vibration absorber has the advantages that the vibration absorption effect is good, the energy consumption is small, the structure is simple and compact, the installation is easy, the safety and the reliability are high, the utilization of the residual space under the railway vehicle is reasonable, and vertical wide-frequency vibration reduction can be carried out on a railway vehicle body which suffers form an abnormal vibration problem due to the fact that a railway is unsmooth.

The invention relates to an intermediate support assembly of a heavy vehicle drive shaft. A bearing is assembled in an inner frame through clamp springs on two sides, sealing rings are arranged on two sides of the bearing, the inner frame is externally vulcanized with an outer cover into a whole through a rubber damping pad, the rubber damping pad is hollowed out internally to form an 'n'-shaped damping groove I which forms a semi-surrounded structure, the rubber damping pad on the upper portion of the inner frame and the inner frame are both covered in an 'n'-shaped empty space, clearances are formed at two side edges of the inner frame, and the lower portion of the rubber damping pad and the inner bottom of the outer cover are connected to form a connecting rib. After the assembly is subjected to complete vehicle trial assembly, the 'n'-shaped semi-surrounded structure of the rubber damping pad can absorb large axial movement of the intermediate support assembly, the angle of the intermediate support assembly is radially adjustable, the radial direction of the intermediate support assembly is ensured to be perpendicular to the axial direction of a center line of the drive shaft, and the intermediate support assembly is simple and feasible and remarkable in benefit, and has promotional value in the automobile industry.

The invention relates to damping device and control method. The vibration absorber includes mechanical device and control system. The former includes one kinematic pair formed by nut and screw connected with the electric motor principal axis of which base hinged with one elastic rod. Nut out edge is hinged with another elastic rod. Another ends of the two elastic rods are respectively hinged with the wrist to form isosceles triangle. Angular transducer and acceleration transducer are connected with the control system signal acquisition input port. The control method includes the following steps: inputting vibrating signal into control system; analyzing main vibrating frequency and calculating span value; transforming the span value into rotating signal to make the electric engine drive the nut to rotate; changing the span value for the two elastic rods until to the calculated value. The invention can track the vibration frequency of the object by adjusting vibration absorber natural frequency to reach the optimal damping effect.

The invention discloses a steel rail damper. The damper includes at least one cavity structure; the cavity structures are provided with fillers; and the fillers can be fluidly arranged in the cavity structures. The damper can be commonly formed by the cavity structures and discrete particles, so that the damper can absorb the vibration of a steel rail through a principle of a dynamic vibration absorber and also can absorb the vibration of the steel rail through a principle of particle damping; and with the existence of particle damping, the vibration absorption efficiency and vibration absorption bandwidth of the damper can be enhanced, and better vibration absorption effects can be generated.

The invention discloses a variable-stiffness variable-damping vibration absorber based on characteristics of a magneto-rheological fluid. According to the vibration absorber, the characteristics of the magneto-rheological fluid are changed through vibration data detected by a vibrating sensor, therefore, the stiffness and the damping of the vibration absorber are changed to realize the adjustment of natural frequency of the vibration absorber, and a best vibration absorption effect is achieved. The vibration absorber is good in vibration absorption effect, and can perform a good vibration absorption function under a fixed vibration frequency; the natural frequency of the vibration absorber is adjustable and can be adjusted according to different excitation frequencies so as to achieve the best vibration absorption effect; during a vibration process, the natural frequency of the vibration absorber is adjusted continuously through the detection of the sensor, and real-time tracking is achieved to ensure that the best vibration absorption effect is maintained during the vibration process; due to semi-active control, the consumed outside energy is little; the vibration absorber is simple in structure, easy to achieve and high in feasibility; and combination use is facilitated, and a plurality of vibration absorbers can be combined and used for multi-frequency vibration.

The invention provides aluminum-coated graphite composite powder, an aluminum-graphite composite comprising the composite powder and a preparation method thereof. The aluminum-coated graphite composite powder comprises nanoscale aluminum powder or aluminum alloy powder, graphite and an adhesive, wherein the particle size of the nanoscale aluminum powder or aluminum alloy powder is 50-100nm; the particle size of the graphite is 20-70 microns; the graphite is a coated core; the adhesive is composed of epoxy resin and/or phenolic resin, diluted epoxy liquid, ethylenediamine and/or an NL curing agent; the nanoscale aluminum powder or aluminum alloy powder is coated on the surface of the graphite via the adhesive. Through the aluminum-coated graphite composite powder, the problems of the segregation of the graphite in the preparation process of the aluminum-graphite composite and the limitation of a process of chemically plating copper/nickel on the surface of the graphite can be solved.

An air spring type semi-active control hydraulic suspension comprises a suspension housing. A rubber main spring is disposed at one end of the suspension housing. A bottom tray is disposed at the other end of the suspension housing. The suspension housing is internally provided with an inertial passage and a decoupling chamber. A decoupling membrane is disposed inside the decoupling chamber and divides the decoupling chamber into a liquid chamber and a gas chamber. The liquid chamber is communicated with the inertial passage. The suspension housing is provided with a through hole communicated with the gas chamber; the inner wall of the through hole is in a cone frustum structure; the diameter of the inner wall of the outside of the through hole is larger than that of the inner wall of the inside of the through hole; the through hole is provided with a stopper in hermetic fit with the through hole; the suspension housing is provided with a drive mechanism which controls the stopper to axially move along the through hole. Compared with the prior art, the air spring type semi-active control hydraulic suspension has the advantages that vibration of wider frequency band can be absorbed, interior vibration and noise in various driving conditions can be effectively reduced, and an automobile is more comfortable.

The invention discloses an offshore wind power device arbitrary-direction vibration absorbing system. The vibration absorbing system involves a shell, and vibration absorbing components, wherein the vibration absorbing components are arranged in the shell; each vibration absorbing component comprises a mass block, and damping blocks, wherein the mass block is arranged in the shell, the damping blocks used for damping are symmetrically arranged in the horizontal direction, the vertical direction and the height direction of the mass block, and the damping blocks are connected with the mass block; and each electromagnetic energy collection component comprises coils and magnets, wherein the coils are arranged on two opposite sides of the outside of the shell correspondingly, the vibration absorption components are located between the corresponding coils, and the magnets are arranged on the corresponding mass block. The offshore wind power device arbitrary-direction vibration absorbing system has the advantages of being simple in structure, good in vibration absorption performance and the like. The system belongs to the technical field of offshore electricity generation vibration control.

The invention provides a reduction box with small tooth difference for interlayer water-cooling tank zinc-based alloy bearings. The reduction box comprises a tank body, an input shaft, a transmission mechanism and an output shaft, and is characterized in that an inner cylinder and circular end cover connecting part is arranged in the tank body, an inner cylinder is connected with the tank body, the input end of a circular end cover is in close fit with an inner hole of the input end of the tank body, the circular end cover is connected with the tank body through a circular ring plate, an interlayer is formed between the inner wall of the tank body and the outer wall of the inner cylinder and circular end cover connecting part, and a water inlet valve and a water drain valve are arranged on the top and the lateral of the tank body; the transmission mechanism comprises a planet wheel, an inner tooth ring and an eccentric bearing, a wearing ring on the output shaft is supported in one zinc-based alloy bearing, a sponge with the T-shaped section is arranged in the output shaft, an oil storage cavity Q is formed by the sponge in the output shaft and a shaft hole of the output shaft, the other zinc-based alloy bearing is arranged in a uniform load ring, and an output shaft zinc-based alloy bearing simple support structure is formed. The reduction box has the technical advantages that the structure is simple and constructing cost is low; water flow is adjusted so that thermal power can approach to mechanical power; the alloy bearings are reliable in lubrication, cost can be lowered by 60-80 percent, and steel for the bearings can be saved by 50-70 percent.

The invention discloses a preparation method for a friction plate. Materials of the friction plate comprise an enhanced titanium alloy skeleton and filler. The enhanced type titanium alloy skeleton comprises titanium alloy powder, tungsten carbide and titanium hydride. The filler comprises graphene fiber, diatomite, brass powder, graphite, carbon fibers, silicon dioxide, Pbo fiber, adhesive spraying aluminum silicate fiber, nanometer phenolic resin, styrene butadiene rubber, aramid fiber, mineral fiber, copper fiber, polypropylene fiber, paper fiber, metallic aluminum powder, zinc powder, mica, calcined petroleum coke, red vermiculite, light magnesium oxide, precipitated barium sulfate, light calcium carbonate, modified phenolic resin, molybdenum powder, molybdenum disulfide, graphite, nitrile butadiene rubber, ferric oxide, chromium oxide and the like; and the four technological processes of burdening, mixing and stirring, hot pressing forming and curing are adopted to complete the preparation method for the friction plate. The friction plate prepared through the scheme is low in hardness, high in stability, low in noise generated when an automobile is used and good in safety performance.

The invention relates to a glass antifogging agent, in particular to a formulation and a manufacturing technique for a high/low-temperature multifunctional long-lifespan high-performance glass antifogging agent. The formulation is characterized by comprising the following components (in percentage by weight): 1, 3 to 30 percent of gelatin; 2, 50 to 69 percent of phosphoric acid; 3, 20 to 30 percent of isopropanol; 4, 0 to 10 percent of formaldehyde; 5, 0 to 10 percent of glycerol; and 6, 0 to 19 percent of ethylene glycol. The manufacturing technique comprises the following steps: adding materials 2 and 3 to a container and evenly stirring to form solvent A; putting a material 1, namely the gelatin, into the solvent A and allowing the gelatin to absorb enough solvent A to swell, be completely soft and have no hard heart; slowing heating the gelatin during water bath to dissolve the gelatin; using a stirrer to continuously stir the gelatin at a speed of 50 revolutions per minute till the gelatin is completely dissolved; keeping the constant temperature of gelatin solution and adding materials 4, 5 and 6 in turn pro rata; stirring and mixing evenly; and obtaining a finished product of the antifogging agent. The product can have good antifogging effects in a wide temperature range between 30 DEG C below zero and 100 DEG C.

A circular vehicle-mounted LED emergency lighting lamp solves the problems that in the prior art, cooling fins are arranged on a lower shell and a rear cover, an upper shell, the lower shell and the rear cover cannot be interchanged, the machining cost is high, and the size is large. The circular vehicle-mounted LED emergency lighting lamp is characterized in that universal front-and-back symmetrical end covers are installed on the front side and the rear side of a barrel-shaped radiator, a double-sided aluminum substrate is installed in the barrel-shaped radiator, an LED lamp driving circuit and LED lamp beads are welded to a front panel of the double-sided aluminum substrate, an LED lamp driving circuit is welded to a rear panel of the double-sided aluminum substrate, and a columnar radiator is installed on the rear panel of the double-sided aluminum substrate. The circular vehicle-mounted LED emergency lighting lamp has the advantages that interchangeability of the front end cover and the rear end cover is good, one double-sided aluminum substrate is adopted to serve as a lamp panel and a driving circuit board, and the double-sided aluminum substrate also serves as an installation plate for heat radiating columns; the columnar radiator and the barrel-shaped radiator are combined and connected with each other through heat-conducting glue, the heat radiating area is increased, the heat radiating speed is high, the sealing and waterproof effects are good, the structure is simple, the size is small, the weight is light, and the circular vehicle-mounted LED emergency lighting lamp is suitable for serving as a vehicle-mounted LED emergency lighting lamp.

The invention provides a dynamic balance cycloidal reduction box provided with an interlayer air-cooling box body and supported by zinc-based alloy bearings. The dynamic balance cycloidal reduction box comprises the box body, an input shaft, a transmission mechanism and an output shaft, and is characterized in that connecting parts of an inner cylinder and a circular end cover are arranged in the box body, the inner cylinder is connected with the box body, the input end of the circular end cover is in close fit with an inner hole of the input end of the box body, the circular end cover is connected with the box body through a circular ring plate, an interlayer is formed by the inner wall of the box body and the outer walls of the connecting parts of the inner cylinder and the circular end cover, an exhaust window is formed in the top of the box body, and a draught fan is arranged on the side portion of the box body; the transmission mechanism comprises four cycloidal gears, pin wheel housings, needle pins and eccentric bearings, the output shaft is arranged in the zinc-based alloy bearings in a supported mode, a T-shaped sponge is arranged in the output shaft, an oil storage cavity Q is formed by the sponge and a shaft hole, lubricating oil flows into a friction surface from a small hole, the alloy bearings are arranged in load balance rings, and an output shaft alloy bearing simply-supported structure is formed. The dynamic balance cycloidal reduction box has the technical advantages that the structure is simple, and cost is low; the air volume is adjusted, so that thermal power approaches to mechanical power; lubrication is reliable, bearing cost is reduced by 60%-80%, steel for the bearings is saved by 50%-70%, and dynamic balance of operation can be achieved.

The invention relates to the technical field of bearings, in particular to a retainer and a bearing. Domestic bearing retainers are mainly semi-wrapped plastic crown-shaped retainers and stamped steelwave-shaped retainers, the riveted steel retainers are poor in heat dissipation performance and vibration absorption performance, and the plastic crown-shaped retainers are insufficient in impact resistance. In order to solve the problems, the following technical scheme is adopted. The bearing retainer comprises two identical annular half-retainers, wherein the two half-retainers are connected through a plurality of connecting point lock catches arranged on the inner end faces in the annular circumferential direction; pocket-shaped grooves are evenly formed at intervals in the inner end faces, lock catch connecting points are arranged on the inner end face between every two adjacent pocket-shaped grooves, and after the two half-retainers are connected, a plurality of pocket holes are formed between the two half-retainers by splicing the pocket-shaped grooves; and the connecting position of the two annular half-retainers is sunken inwards to form a circumferential oil groove, and the circumferential oil groove communicates with the pocket holes. According to the scheme, the retainer is kept light, meanwhile, the impact resistance is improved, and the heat dissipation capacity is improved.

The invention provides a cycloid reduction gearbox of an interlayer air cooling box zinc base alloy bearing support. The cycloid reduction gearbox of the interlayer air cooling box zinc base alloy bearing support comprises a box body, an input shaft, a transmission mechanism and an output shaft and is characterized in that an inner cylinder and a round end cover connecting piece are arranged in the box body, the inner cylinder is connected with the box body, the input end of a round end cover is in close fit with an inner hole of the input end of the box body, the round end cover is connected with the box body through an annular disc, an interlayer is formed by the inner wall of the box body, the inner cylinder and the outer wall of the round end cover connecting piece, the top and the side of the box body are provided with a ventilation window and a fan, the transmission mechanism comprises a cycloidal gear, a pin wheel housing, a pin and an eccentric bearing, a wear-resisting ring on the output shaft supports the interior of a zinc base alloy bearing, a sponge with a T-shaped section is arranged in the output shaft, an oil storage cavity Q is formed by the sponge in the output shaft and a shaft hole, the zinc base alloy bearing is arranged in a uniform load ring, and therefore a simple output shaft zinc base alloy bearing supporting structure is formed. The cycloid reduction gearbox has the technical advantages that the structure is simple, manufacturing cost is low, the air volume is adjusted, thermal power is close to mechanical power, the alloy bearing is reliably lubricated, bearing cost is lowered by 60% to 80%, and steel for the bearing can be saved by 50% to 70%.