101 results about "Metal rubber" patented technology

The invention relates to a multi-physical mechanism synergistic light sound absorption and insulation integrated sandwich structure and a manufacturing method thereof.The multi-physical mechanism synergistic light sound absorption and insulation integrated sandwich structure comprises a panel, a sandwich layer and a micro-perforated panel which are arranged from top to bottom, a cavity is formed in the sandwich layer, and multiple sets of cantilever beam type harmonic oscillators arranged in an array are arranged in the cavity; the cantilever beam type harmonic oscillator comprises a cantilever beam base body and a metal rubber mass block fixed at the top end of the cantilever beam base body. According to the invention, through the coupling design of the micro-perforated plate and the internal grating cavity of the sandwich layer, the sound absorption frequency band is further widened, the sound absorption coefficient of the whole structure in a middle-high frequency band is improved, collaborative optimization of broadband sound absorption and low-frequency sound insulation is realized, the problem that a traditional harmonic oscillator is easy to lose efficacy in high-temperature and low-temperature environments is effectively solved, and the sound absorption efficiency is improved. And meanwhile, due to the design of the integrated sandwich structure, the problems of aging and layering of the adhesive layer in severe environments such as high temperature and damp and hot environments are avoided, and the integrity and durability of the structure are also remarkably improved.

The application provides a spring bidirectional composite metal rubber damper and a working method thereof. The spring bidirectional composite metal rubber damper comprises a vertically arranged outer sleeve, one end of the outer sleeve is closed, the other end of the outer sleeve is internally provided with an inner sleeve, one end of the inner sleeve is closed, the other end of the inner sleeve is movably connected with a core shaft, an annular clamping shoulder is arranged in the middle of the inner sleeve, the annular clamping shoulder divides the inner sleeve into an upper damping cavity and a lower damping cavity, the shaft section of the core shaft located in the upper damping cavity is externally provided with an upper damping pad, the shaft section of the core shaft located in the lower damping cavity is externally provided with a lower damping pad, a lower connecting mechanism is arranged on the closed end of the outer sleeve, the end of the core shaft extends out of the open end of the inner sleeve, and an upper connecting structure is arranged on the extending end. The application is convenient for damping of aerospace, aviation, nuclear industry and military instruments, can solve the poor rigidity adjustability of the current single metal rubber damper, that is, it is difficult to realize the coordination between low rigidity and high durability, meanwhile, the structure has high lateral rigidity and compact structure.

This invention belongs to the field of vibration reduction technology for nuclear power plant fans, specifically relating to a high-damping integrated vibration reduction foundation suitable for nuclear power fan fans. It consists of a steel frame connected to a height-adjustable vibration damper. The steel frame is welded from high-damping composite channel steel, which is composed of conventional channel steel and particulate dampers. The height-adjustable vibration damper uses the housing as the installation reference. An upper annular metal rubber is inserted into its inner cavity, followed by the upper end of the mandrel being inserted into the inner hole of the upper annular metal rubber. Then, a lower annular metal rubber is inserted into the inner cavity of the housing, with its upper end face against the mandrel. A base is then placed on top, and rivets are used to connect the base and housing through four mounting holes. Finally, the internal thread of the mounting block is screwed into the external thread at the upper end of the mandrel. This invention effectively reduces the vibration level of the fan, ensuring safe operation of the fan.

The utility model discloses a metal rubber pipe convenient to bend, which comprises a pipe body, a plurality of round bodies are arranged on the pipe body, angle adjusting assemblies are arranged on the round bodies, the metal rubber pipe convenient to bend is provided with a rotating disc, a bolt, a connecting rod and a rubber block, and when the pipe body needs to be bent, the rotating disc, the bolt, the connecting rod and the rubber block are connected through the rotating disc. According to the pipe bending device, the rotating disc rotationally installed on the round body is rotated, the connecting rod installed on the rotating disc drives the rubber block to conduct angular motion, the rubber block drives the pipe body to be bent at a section of position, then the bolt is rotated to be close to the round body, the rotating disc is fixed to the round body, and then the bent pipe body is fixed.

The invention discloses a temperature-resistant heat-insulation sealing metal-rubber composite material which comprises a metal phase, a rubber phase and a binder, the preparation method of the temperature-resistant heat-insulation sealing metal rubber composite material comprises the following steps: step 1, sintering and molding metal fibers to obtain a three-dimensional porous metal framework; 2, fluororubber and silicone rubber are added into an internal mixer to be blended, then hollow glass beads and carbon black are sequentially added, the mixture is mixed to be uniform, and rubber mixed rubber is prepared; 3, the surface of the metal framework is coated with a binding agent, the binding agent is covered with the rubber compound, and the whole material is placed in a vulcanizing machine to be vulcanized; and 4, integrally transferring the vulcanized material into a drying oven for secondary vulcanization, and cooling to obtain a composite material finished product. The composite material is applied to the field of space flight and aviation. The invention aims to solve the problems of narrow temperature resistance range, non-ideal heat insulation effect and obvious reduction of high-temperature mechanical properties of the existing material, so as to meet the use requirements of aerospace equipment in a complex thermal coupling environment.

The invention relates to the technical field of track shock absorbers, in particular to a floating slab vibration isolator for a liquid rubber composite track, which comprises an upper seat plate, a lower seat plate and a middle partition plate, an upper rubber body is arranged between the upper seat plate and the middle partition plate, an upper hydraulic cavity is formed between the upper rubber body and the middle partition plate, and a lower rubber body is arranged between the lower seat plate and the middle partition plate. A lower hydraulic cavity is formed between the lower rubber body and the middle partition plate, damping liquid is arranged in the upper hydraulic cavity and the lower hydraulic cavity, the damping liquid in the upper hydraulic cavity and the damping liquid in the lower hydraulic cavity can flow mutually, a containing cavity used for containing the upper rubber body is formed in the upper base plate, and a ventilation cavity is formed between the top wall of the upper rubber body and the cavity top wall of the containing cavity. A plurality of ventilation holes located above the ventilation cavity are formed in the upper seat plate, and the lower rubber body comprises an upper supporting body, a lower cover body and a middle hydraulic body. According to the vibration isolator in the scheme, metal, rubber and a flow channel structure are optimally designed, so that the ratio of dynamic stiffness to static stiffness is adjustable, and liquid sealing is reliable.

The application relates to a high-order nonlinear friction-based metal rubber material hysteresis dynamics modeling method, which comprises the following steps: constructing a high-order nonlinear friction force model according to the contact form and spatial angle distribution of metal wires in the metal rubber; constructing a traditional dynamics model; substituting the high-order nonlinear friction force model into the traditional dynamics model to construct a high-order nonlinear friction-based metal rubber hysteresis dynamics model; performing parameter identification on the metal rubber hysteresis dynamics model; constructing an error model to represent the error of the test results affected by the dynamics model; performing parameter identification on the error model to determine the optimal number of model terms that should be included in the model, and completing the determination of the error model; completing error model parameter optimization, and completing model construction according to the model correlation coefficient of the high-order nonlinear metal rubber hysteresis dynamics model based on the error model. The method is beneficial to the establishment of a metal rubber dynamics model with high precision and universality.

The present application relates to a kind of aero-engine metal rubber damping support, support body, metal damping rubber wire, metal damping rubber strip and damping ring assembly;Variable stiffness support base features are realized by forging, mainly including U-shaped stiffener, corner protrusion, with the smaller contact area of the mounting edge and clamp of machine case, different areas of variable cross-sectional dimension and the reserved metal damping rubber setting area.Metal rubber is prepared, and metal rubber is pressed into shape according to the reserved size on variable stiffness support base.The pressed metal rubber is welded on the variable stiffness support base.The small assembly of bow type damping spring, metal damping rubber wire, damping inner ring, damping outer ring is assembled by temperature difference assembly method in the two through holes of support body support structure.The present application can meet the damping function requirement of aero-engine external system pipeline to support, and can solve the problem that traditional pipeline support cannot be damped.

The invention discloses a glass raw material impurity removal system for float glass production, and relates to the technical field of glass impurity removal. The device comprises a material blocking barrel, a concave rotating disc, a material returning mechanism, a conveying net belt, a powder guiding groove and a multi-cavity collecting box body. After glass raw materials fall into the downwards-concave rotating disc through the funnel, preliminary separation is achieved under the action of centrifugal force, and the disc body is kept cooled under the action of the heat dissipation blades; part of particles enter the conveying mesh belt through the feeding channel, the glass powder is separated through the powder guide groove, and large particles are cast in an accelerated mode along with the conveying mesh belt. Materials with different densities fall into different cavities of the collection box body under the action of air resistance and inertia, and efficient partition collection of glass, metal, rubber and the like is achieved.

A kind of anti-falling beam multistage self-emergency protection cable. Multiple processing methods are lacking in bridge related anti-falling beam processing. In the utility model, the top side of the steel sleeve is fixedly connected to the bottom surface of the box girder body through the connecting cushion block, the support is vertically arranged on the outer side wall of the pier, the built-in wire assembly is arranged in the connecting pipe, the first metal rubber block is fixedly connected to the outer wall of one end of the steel sleeve, the outer side of the second metal rubber block is fixedly connected to the inner wall of the other end of the steel sleeve, one end of the connecting pipe is connected to the support, the other end of the connecting pipe is sequentially connected to the first limiting head after passing through the steel sleeve, the first metal rubber block and the second metal rubber block, the middle limiting steel ring is fixedly sleeved on the connecting pipe, when the steel sleeve moves away from the pier with the box girder body, the middle limiting steel ring is tightly attached to the first metal rubber block, when the steel sleeve moves away from the pier again with the box girder body, the second metal rubber block is tightly attached to the first limiting head.

The invention belongs to the field of sealing materials, and discloses a high-pressure-resistant hydrogen embrittlement-resistant metal rubber composite sealing material and a preparation method thereof. The high-pressure-resistant and hydrogen-embrittlement-resistant metal rubber composite sealing material comprises a titanium alloy base material, a metal rubber layer and a metal rubber layer which are sequentially stacked from bottom to top, the titanium oxide layer is generated on the surface of the titanium alloy base material in situ; and the rubber layer is adhered to the surface of the titanium oxide layer through hot pressing treatment. The invention further discloses a preparation method of the high-pressure-resistant and hydrogen-embrittlement-resistant metal rubber composite sealing material, and the hydrogen-embrittlement-resistant metal rubber composite sealing material which can still keep stable deformation in a high-pressure environment is prepared by constructing the hydrogen-inhibiting oxidation layer and combining surface roughening, laser irradiation treatment and hot pressing treatment. After the high-pressure-resistant and hydrogen-embrittlement-resistant metal rubber sealing material is kept in a 100 MPa high-pressure hydrogen environment for 1000 hours, the tensile strength retention rate is larger than or equal to 88%, the percentage elongation retention rate after fracture is larger than or equal to 80%, and the deformation is smaller than or equal to 0.5%.

The invention discloses a secondary self-emergency anti-beam-falling device for a bridge and a protection method, and relates to the technical field of roads and bridges. The bridge pier anchor fixing part is fixedly connected to a bridge pier through an anchor bolt and hinged to the connecting support body through a hinge shaft, the steel strand restraining assembly is fixedly connected to the outer side wall of the connecting support body, the beam bottom anchor fixing part is fixedly connected to the bottom of a box beam body through an anchor bolt, and the steel sleeve is fixedly connected with the beam bottom anchor fixing part through a bolt. The metal rubber efficiency assembly is arranged in the steel sleeve, the steel strand restraining assembly is connected into the steel sleeve in a penetrating mode, and the steel strand restraining assembly and the metal rubber efficiency assembly are matched to form a buffering-restraining anti-seismic device. Beam end impact is effectively restrained, relative displacement is limited, and reliable beam falling prevention constraint is provided; and through cooperative work of the metal rubber efficiency assembly and the steel strand constraint assembly, multi-stage protection of the bridge body under the earthquake action is achieved, and the overall anti-seismic toughness of the bridge is improved.

This invention relates to the field of vibration reduction technology for electronic devices, and more particularly to a support device that combines vibration reduction and heat conduction functions. This support device supports a printed circuit board (PCB) and includes a flange piston, a fastening assembly, a fixing flange stud, an upper end cap, and a composite vibration damping pad. The upper end of the flange piston abuts against the bottom surface of the PCB, and the fastening assembly fixes the PCB to the upper end of the flange piston. The upper end cap is connected to a third cylinder of the fixing flange stud. The composite vibration damping pad is disposed within the cavity formed by the third cylinder and the upper end cap. The lower part of the flange piston is located within the upper end cap and can slide axially, with its lower end abutting against the composite vibration damping pad. The flange piston, fixing flange stud, and upper end cap are all made of thermally conductive metal. The composite vibration damping pad consists of a metal-rubber skeleton and thermally conductive silicone grease filling its pores. This invention achieves vibration reduction through the dry friction energy dissipation of the metal rubber and achieves efficient heat dissipation through the three-dimensional thermally conductive network formed by the metal skeleton and thermally conductive silicone grease, solving the problem of the mutual constraint between vibration reduction and heat dissipation.

The invention belongs to the cross technical field of structural dynamics design and intelligent quality control of high-end equipment, and relates to a metal rubber hoop refined quantitative screening method and system based on hierarchical sensitivity evaluation. High-fidelity dynamic modeling is carried out on a pipeline system, hierarchical global sensitivity evaluation and performance mapping inversion analysis are combined, and a scientific decision link from system-level dynamic performance constraints to component-level key mechanical property acceptance threshold values is constructed. The method aims at thoroughly innovating a traditional hoop screening mode which mainly depends on empirical judgment and unified rigidity threshold values at present, and personalized, quantitative and refined management and control of mechanical properties of hoops with specific pipeline configurations, specific installation positions and specific performance targets are achieved. And a key technical support is provided for improving the vibration safety of a pipeline system and the reliability of a whole machine of complex rotating machinery such as an aero-engine and a gas turbine.

The application discloses inherent frequency stepless adjustable metal support hanger, belongs to the technical field of vibration and noise reduction. The support hanger is composed of pipeline installation assembly, inherent frequency adjusting assembly and installation support assembly, the pipeline installation assembly contains upper clasp ring, lower clasp ring, clasp ring fastener and metal rubber part; the inherent frequency adjusting assembly includes first square steel, fastening bolt and adjusting sliding block elliptical adjusting track; the installation support assembly is composed of second square steel and installation backing plate. By adjusting the symmetric movement of the adjusting sliding block in the adjusting track long strip-shaped opening, the effective support length is changed to realize continuous stepless adjustment of stiffness and inherent frequency. The application adopts full metal structure, is resistant to aging and radiation, has long service life, can match complex pipeline vibration working conditions of ships and the like, significantly improves the vibration isolation effect, is convenient to adjust and has high engineering application value.

The utility model provides an end cylindrical surface combined type inter-shaft sealing device which comprises a first sealing ring and a sealing seat, the first sealing ring is arranged on the outer wall of an inner-layer rotor in a sleeved mode, and the sealing seat is installed in an outer-layer rotor. The first sealing ring and the sealing seat are combined in a sleeved mode, the end face of the sealing seat is flush with the end face of the first sealing ring, so that an annular installation cavity is formed between the first sealing ring and the sealing seat, and a metal rubber sealing ring is installed in the annular installation cavity. According to the device, elastic deformation of the metal rubber sealing ring is adopted, so that the sealing ring can follow vortex motion or radial eccentric jumping of the rotor, the purpose that the first sealing ring can float in the radial direction is achieved, and the eccentric distance of the inner-layer rotor and the outer-layer rotor in the radial direction in the rotating process is compensated; therefore, the outer wall of the inner-layer rotor and the inner wall of the first sealing ring do not make contact and rub each other, the integrity of the first sealing ring is protected, and the good performance and the service life of inter-shaft sealing are guaranteed.

The invention provides a metal rubber magnetic suspension bearing with radial buffering performance, which comprises a bearing inner ring serving as a rotor and used for being connected with a shaft; the annular permanent magnet is fixed on the outer side of the bearing inner ring, magnetic poles of the annular permanent magnet are alternately arranged in an S-pole and N-pole mode in the circumferential direction, and the annular permanent magnet is connected with the bearing inner ring; a hole is formed in the bearing outer ring in the radial direction, and a metal rubber part of a T-shaped structure is embedded in the hole; the metal rubber part serves as a magnetic conductive iron core, and the embedded metal rubber part protrudes towards the axis direction. Winding a winding coil on the protruding metal rubber part; and a bearing outer ring sleeve is mounted on the outer side of the bearing outer ring to limit the axial position of the metal rubber part. Metal rubber is creatively adopted as the magnetic conductive iron core, the inherent elasticity of the metal rubber can deform when bearing radial loads, and a remarkable buffering effect is provided.

The utility model discloses a metal-rubber part adhesive anti-accumulation device based on a high-temperature explosion-proof environment, which comprises a support body, one end of the support body is internally provided with a separation cavity, the support body is synchronously and rotatably connected with a pair of rollers, one end of each roller extends to the separation cavity, and the other end of each roller extends to the separation cavity. The pair of rollers is used for supporting and rolling the glued metal-rubber part; the transmission shaft is rotationally connected to the side wall, close to the partition cavity, of the supporting body, and one end of the transmission shaft extends into the partition cavity and is in transmission connection with one end of the roller; one end of the clockwork spring is fixed on the transmission shaft, and the other end of the clockwork spring is fixed on the inner wall of the separation cavity. The purpose of relieving adhesive accumulation of the adhesive on the metal-rubber bonding surface due to the gravity effect is achieved.

The invention belongs to the technical field of aero-engine complete machine vibration control, and particularly relates to a broadband vibration absorber and a multi-fulcrum shared bearing structure, and the broadband vibration absorber comprises a shell, a baffle and a lamination group; the shell is detachably connected with the lamination group, and an annular cavity is formed inside; the lamination group is mounted in the annular cavity in the radial direction of the annular cavity, and comprises bolts, and a metal rubber ring I, an arc-shaped metal lamination I, a metal rubber ring II, an arc-shaped metal lamination II, a metal rubber ring III, an arc-shaped metal lamination III, a metal rubber ring IV, an arc-shaped metal lamination IV and a metal rubber ring V which are stacked and penetrated by the bolts. Under the condition that the radial rigidity of the main force bearing structure is guaranteed, high-frequency mechanical vibration which is uploaded to the outer casing from the two rotors along the force transmission route is absorbed through the metal lamination and metal rubber sheet combined structure which are arranged on the main force transmission route and have different sizes, and the whole machine vibration response level reflected in the outer casing can be remarkably reduced.

The utility model provides a vehicle skylight guide structure which comprises a skylight guide shaft and a skylight guide head, and the skylight guide shaft comprises a skylight guide flexible shaft and guide flexible shaft thread reinforcing ribs which are attached to the outer surface of the skylight guide flexible shaft and are distributed in a spiral shape. The skylight guiding head comprises a guiding head connecting part directly connected with the skylight guiding shaft and a guiding head guiding part arranged at the front end of the guiding head connecting part, the skylight guiding flexible shaft comprises a flexible shaft high-elasticity rubber layer arranged on the innermost layer, and the outer surface of the flexible shaft high-elasticity rubber layer is wrapped with a metal rubber protection layer. The multi-layer structure is adopted, the shaft body and the threads of the guide shaft are strengthened, all the layers are matched and complemented, the strong rigidity and the flexibility of the guide shaft are remarkably improved, the service life of the guide shaft is prolonged, the guide shaft is separated from the meshing threads, the meshing threads can be replaced, the meshing threads can be replaced through meshing of the threads of the guide head, and the service life of the guide shaft is prolonged. The service life of the guide structure is prolonged, and the multifunctional and wide-field use requirements of the guide structure are met.

The three-way vibration isolation bistable metal damping pipe clamp comprises a pipe clamp body, the pipe clamp body is installed outside a pipeline, a plurality of damping assemblies are evenly distributed on the inner wall of the pipe clamp body in the circumferential direction, an annular clamping shoulder is arranged on the outer wall of the pipeline, and clamping grooves are formed in the positions, corresponding to the clamping shoulder, of the damping assemblies; the damping assembly comprises M-shaped metal rubber, the two corners of the M-shaped metal rubber are flat corners, the clamping groove is formed between the two corners, the two foot ends of the M-shaped metal rubber are installed on the inner wall of the pipe clamp, and the two corners of the M-shaped metal rubber abut against the outer wall of the pipeline. The pipe clamp is reasonable in design, local stress concentration caused by uneven pre-tightening force of a traditional pipe clamp is avoided, meanwhile, self-adaptive steady-state switching according to the temperature is achieved, and the problem that a traditional structure is unstable or insufficient in constraint at the high temperature is solved.

The invention relates to the technical field of internal combustion locomotive noise control, in particular to an internal combustion locomotive low-noise diesel engine cabin vibration isolation and noise reduction device which comprises a composite vibration isolation material layer which comprises a surface PU wear-resistant layer, a middle sponge sound absorption layer and bottom damping glue. The vibration isolation base comprises a double-layer elastic support and a metal rubber composite vibration isolator; the cab acoustic coating structure is arranged in the cab wall plate; the Helmholtz resonant cavity array is arranged on the inner wall of the intake and exhaust pipeline of the diesel engine room; the active noise reduction system comprises a plurality of error microphones and a plurality of secondary sound source loudspeakers, through application of the composite vibration isolation material layer, wide-frequency-band noise control is achieved, particularly, the sound absorption coefficient can reach 0.7 or above under the frequency of 1000 Hz, the sound insulation index exceeds 25 dB, and the sound environment of a cab is effectively improved.

The invention belongs to the technical field of batteries, and discloses a battery top cover, a battery shell and a battery monomer. And the battery top cover comprises a top cover sheet, an anti-explosion sheet and a metal rubber sealing ring. An explosion-proof hole is formed in the top cover piece, the explosion-proof piece covers an opening in one end, deviating from the battery cell, of the explosion-proof hole, the explosion-proof piece is detachably connected with the top cover piece, and an explosion-proof nick is formed in one side, facing the battery cell, of the explosion-proof piece. The metal rubber sealing ring is clamped between the top cover piece and the anti-explosion piece, and the top cover piece and the anti-explosion piece can be tightly connected through the high rigidity of the metal rubber sealing ring. The explosion-proof sheet of the battery top cover is detachably connected with the top cover sheet, so that the explosion-proof sheet is convenient to replace; and the explosion-proof nicks can be exploded within a required explosion value, and the safety performance of the single battery is high. The battery shell comprises an outer shell and the battery top cover, and the top cover sheet blocks the opening of the outer shell. The battery monomer comprises the battery cell and the battery shell, the battery cell is blocked in the shell by the top cover sheet, and the safety performance of the battery monomer is high.

This utility model discloses an integrated gas cylinder vibration damping bracket, relating to the field of gas cylinder vibration damping technology. It includes a rocket wall panel and a gas cylinder, with the gas cylinder housed within the rocket wall panel. Shock absorbers are installed at both ends of the gas cylinder. Each shock absorber includes a clamp, a metal-rubber shock absorber, connecting bolts, and fixing bolts. Two clamps are included within the shock absorber. The clamps are L-shaped and have arc-shaped grooves that mate with the ends of the gas cylinder. The metal-rubber shock absorbers are positioned between the clamps and the external structure, with their inner walls contacting the outer walls of the fixing bolts. The metal-rubber shock absorbers fill the gap between the clamps and the external structure, providing shock absorption and buffering for the gas cylinder. This device, by adding shock absorbers at the connection points of both ends of the gas cylinder, helps suppress vibration energy, improves the service life of the gas cylinder, and ensures the gas cylinder remains reliable even when the rocket is reused.

The invention relates to the field of novel porous metal material processing and preparation, in particular to an intelligent metal rubber blank winding device with a visual closed-loop feedback function and a method thereof.The intelligent metal rubber blank winding device comprises a workbench, and a spindle servo motor used for clamping and driving a mandrel to rotate is arranged on the workbench; a stepping module is transversely arranged on one side of the workbench, a fixed-pitch stretching device is arranged on the stepping module, and a wire guiding device is arranged on the fixed-pitch stretching device. A rolling device matched with the mandrel is arranged on the workbench, and a visual detection device is further arranged on the upper side of the mandrel. An industrial computer is installed on the side face of the workbench. According to the device, the consistency of the blank screw pitch and the winding angle in the metal rubber blank preparation process is guaranteed, meanwhile, the metal rubber preparation efficiency is improved, and an equipment foundation is provided for metal rubber batch generation and commercial use.

The invention relates to a steel rail braking device based on a metal rubber composite structure and a working method thereof.The steel rail braking device comprises a limiting ring coaxially connected to a wheel axle, the wheel axle is sleeved with and rotationally connected with a lantern ring, the lantern ring is coaxially and rotationally connected with an inner meshing gear, and the limiting ring is fixedly provided with an outer gear used for being meshed with the inner meshing gear; an L-shaped rod extending outwards in the radial direction is fixedly arranged on the outer side of the inner meshing gear, a hook groove is formed in the end of the L-shaped rod, a storage bin filled with a friction increasing material is arranged outside the limiting ring, the end of the friction increasing material is connected with a positioning hook, and the positioning hook extends out of the storage bin so that the hook groove and the positioning hook can be hooked and linked through axial movement of the inner meshing gear. And a driving piece for driving the lantern ring to slide on the wheel axle is arranged outside the lantern ring, so that the problem that accidents are caused as a traditional device has potential safety hazards and cannot be quickly braked can be effectively solved. According to the device, emergency rapid braking which is safer, more stable and capable of coping with severe environments is achieved.

The application provides a longitudinal and horizontal decoupled composite metal damper, which comprises a shell fixed on a bottom plate, an external vibration excitation supported on an upper end of a core block in an inner cavity of the shell, the core block being slidably arranged at a damping plate at a top of an upper spring seat, a plurality of spiral springs arranged in the inner cavity of the shell between a bottom surface of the upper spring seat and the bottom plate and serving as vertical main elastic supporting elements, four metal rubber elements arranged in the inner cavity of the shell, the four metal rubber elements being a high-rigidity horizontal limiting metal rubber element serving as an impact soft limiting element, a medium-rigidity metal rubber element serving as a horizontal elastic supporting element and a vertical auxiliary elastic supporting element, a high-rigidity vertical limiting metal rubber element serving as an impact soft limiting element, and a low-rigidity vertical damping metal rubber element serving as a vertical damping element; and the damper has a damping composite structure with vertical damping as the main damping and horizontal damping as the auxiliary damping, so that the damping effect is met and more reliable protection is realized.

The application discloses a connecting piece vibration reduction and noise reduction method and device based on a vibration absorption superstructure, which analyzes the vibration of the connecting piece between the vibration source and the remaining components in the vibration system, then carries out vibration reduction structure design according to requirements, embeds appropriate vibration absorption superstructures in the connecting piece, and makes the vibration absorption superstructure band gap interval cover the target vibration reduction rate. According to the configuration of the connecting piece connection, a metal rubber vibration isolation pad is designed and arranged to dissipate the vibration energy twice. Since the design method comprehensively evaluates the vibration direction, transmission path and vibration frequency, and uses customized vibration absorption superstructures for low-frequency vibration reduction, the efficient vibration suppression of actual equipment can be realized. The application has stronger practicability and vibration reduction and noise reduction capacity of engineering equipment, and can be applied to low-frequency broadband vibration reduction and noise reduction of mechanical equipment with connecting pieces between the cylinder equipment as a typical main system vibration source and other components.

The invention belongs to the technical field of aero-engine complete machine vibration control, and particularly relates to a damping vibration absorption structure and a multi-fulcrum shared bearing structure, the damping vibration absorption structure comprises an annular damping vibration absorber, and the damping vibration absorber comprises a first metal rubber ring, a second metal rubber ring and an annular double-fold-back structure; the double-fold-back structure forms mutually parallel fold-back gaps, and the included angle between the double-fold-back structure and the diameter direction of the damping shock absorber is an acute angle. The first metal rubber ring and the second metal rubber ring are installed in the corresponding turning-back gaps respectively. By designing the high-rigidity damping vibration attenuation structure with the metal rubber layer, the vibration attenuation and energy absorption functions of the turbine interstage force bearing structure of the aero-engine are achieved; when vibration energy is transmitted to the high-rigidity damping vibration attenuation structure, the metal rubber damping ring absorbs the energy through the friction effect of the inner metal wires, the vibration energy and strength can be effectively reduced, and therefore the vibration energy transmitted to the outer casing of the aero-engine is reduced, and finally the vibration of the whole machine is reduced.

The utility model provides a kind of curtain wall inner aluminium veneer, including plate body, the back of plate body is with outer frame, a plurality of eyelet is opened in plate body, the outermost layer of plate body itself is lacquer layer, the back surface of plate body, the inside of outer frame is coated with a coating;The back of plate body is fixedly connected with two reinforcing ribs, and the four point positions of outer frame are fixedly connected with corner code.The utility model has the advantages that: plate body back and outer frame inside are coated with a coating, coating is polyurethane damping adhesive layer, reduce plate resonance;The free space of coating surface, paste a sound-absorbing layer, match different frequency sound wave absorption;The front and back of corner code are attached with pad, and pad is made of rubber, metal and rubber, to prevent noise generated by friction after aluminium plate mounting connector component;The above means can make the present aluminium veneer after installation, with certain noise reduction and sound insulation performance, effectively ensure the low-noise environment of building indoor, ensure the clean of indoor environment.