174 results about "Metal rubber" patented technology

The invention relates to the technical field of assembly equipment, in particular to automatic assembly equipment for metal rubber parts for universal joint shaft sleeves, which comprises a rack, a storage hopper is mounted at the top end of the rack, a bearing table capable of sliding up and down is mounted at the corresponding position of the lowest point of an inclined guide surface, and a discharge port is formed in the side wall of the storage hopper. An assembling table is installed on the top face of the rack, a vertically-arranged lifting air cylinder is installed on the top face of the rack, a steering cylinder is connected to the telescopic end of the lifting air cylinder, a positioning clamp is rotationally connected to the interior of the steering cylinder, and the inner side contour of the positioning clamp is matched with the outer surface of a metal shaft sleeve. The bottom face of an inner cavity of the storage hopper is arranged to be an inclined material guiding face, a conveying belt is installed in the inner cavity of the storage hopper and penetrates through the inner side of the material bearing table, and the metal shaft sleeve sorting device aims at solving the problems that in traditional assembly, metal shaft sleeves are often fed through a vibration disc or manual work, the posture is disordered, and the sorting efficiency is low.

The invention discloses an underwater communication equipment technology, and aims to provide a full-sea-depth antenna packaging assembly and a packaging method thereof.The full-sea-depth antenna packaging assembly is characterized in that the full-sea-depth antenna packaging assembly comprises a cabin penetrating part, an antenna unit, an antenna protection cover, a vulcanization coating layer and a sealing ring, and the full-sea-depth antenna packaging assembly is used for achieving stable transmission of signals in a deep sea environment; the antenna unit is used for transmitting and receiving electromagnetic wave signals; a conductive channel is arranged in the cabin penetrating piece and used for being electrically connected with the antenna unit so that electric signals inside and outside the cabin can penetrate through the cabin. The whole antenna protection cover is cylindrical, the end part of the antenna protection cover is in transition connection to form a hemispherical shape, and an antenna placement area is formed in the antenna protection cover; the vulcanized coating layer is coated on the peripheral side of the joint of the antenna protection cover and the cabin penetrating piece; the sealing ring is arranged between the antenna protection cover and the cabin penetrating piece and is of a metal-rubber composite structure. The invention is suitable for the technical field of underwater communication equipment.

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.

The present invention discloses a vertically stacked three-stage vibration damper based on metal rubber. The damper comprises an upper plate, a lower plate, an inner cavity, a central screw, and a three-stage vibration damping mechanism. The upper plate and lower plate are mounted at the upper and lower portions of the inner cavity, respectively. The central screw extends through the upper plate and into the inner cavity. The three-stage vibration damping mechanism comprises a first-stage vibration damping mechanism, a second-stage vibration damping mechanism, and a third-stage vibration damping mechanism. The present invention employs a three-stage stacked vibration damping method, resolving the problem of existing vibration dampers being unable to maintain good vibration damping performance in harsh environments while also providing a good position-limiting and buffering effect.

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 an anti-beam-falling multistage self-emergency protection inhaul cable and an emergency anti-beam-falling protection method thereof. A bridge lacks multiple processing modes related to anti-beam-falling processing. The top side of a steel sleeve is fixedly connected to the bottom face of a box girder body through a connecting cushion block, a support is vertically arranged on the outer side wall of a bridge pier, a built-in stranded wire assembly is arranged in a connecting pipe in a penetrating mode, a first metal rubber block is arranged on the outer wall of one end of the steel sleeve, and the outer side of a second metal rubber block is arranged on the inner wall of the other end of the steel sleeve. One end of the connecting pipe is connected with the support, the other end of the connecting pipe sequentially penetrates through the steel sleeve, the first metal rubber block and the second metal rubber block and then is connected with the first limiting head, and the connecting pipe is fixedly sleeved with a middle limiting steel ring; according to the method, the connecting cushion block, the steel sleeve, the connecting pipe, the built-in stranded wire assembly, the first limiting head, the support, the middle limiting steel ring, the first metal rubber block and the second metal rubber block are matched with one another to achieve the two-stage emergency protection process when the box girder body tends to fall down.

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 invention relates to the technical field of rail transit metal rubber shock absorber recycling and remanufacturing, in particular to a method for heating and recycling a metal framework in a pressurized state, which comprises the following steps: S1, a metal rubber composite shock absorber to be treated is mounted on a recycling tool, and the recycling tool comprises a heating device; s2, vertical pressure or axial torsional force is applied to a metal core shaft of the to-be-treated metal-rubber composite shock absorber through a pressurizing rod of the recovery tool, and meanwhile, a heating device is started, so that a metal framework of the metal-rubber composite shock absorber is stripped from a rubber body; and S3, glue cleaning operation is conducted on the surface of the metal framework, and glue cleaning operation is conducted on the recovery tool. According to the method for recycling the metal framework in the scheme, heating can be conducted while pressurizing is conducted, and the stripping efficiency of rubber and the metal framework can be improved.

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 relates to the technical field of structural material high-performance calculation and numerical simulation, and discloses a metal rubber random vibration damage and fatigue life prediction heterogeneous parallel method which comprises the following steps: inputting finite element model data of a large-scale metal rubber component; a stiffness matrix, a mass matrix and the like are subjected to accelerated calculation by adopting a CPU multi-thread parallel technology, a frequency response function is calculated by combining a multi-process and multi-thread parallel technology, and random vibration response and component fatigue damage based on a frequency domain method are efficiently calculated by utilizing a GPU parallel computing technology. According to the method, a random vibration theory, a frequency domain fatigue analysis method and a finite element calculation method are combined, and meanwhile, multi-process, multi-thread and GPU heterogeneous parallel calculation frameworks are integrated, so that the calculation efficiency is remarkably improved, efficient analysis of random vibration response and fatigue life prediction of the vibration reduction component made of the complex structural material is realized, and the method is suitable for large-scale popularization and application. And an efficient strategy is provided for design optimization and safe service in the fields of aerospace, high-end equipment and the like.

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.

The invention discloses a machining method for a non-metal glue layer of an aero-engine case, and belongs to the technical field of aero-engine manufacturing. The machining method comprises the steps that a specific machining tool is selected based on the material characteristics of a non-metal glue layer of the aero-engine case; based on the material characteristics and the machining tool, machining parameters are set; based on the elastic resilience characteristic of the aero-engine case non-metal rubber layer, the pre-deformation amount is determined; based on the pre-deformation amount, the diameter of a nonmetal glue layer of the aero-engine case is increased before machining, and after coating and heating curing are completed, the machining tool is used for machining based on machining parameters. According to the method, the specific machining tool is selected, the machining parameters are set, the pre-deformation amount is determined, and machining is conducted in sequence, so that the problem that the machining size is difficult to accurately control due to the fact that the rubber layer is soft in material and large in elasticity can be systematically solved, the machining precision is effectively improved, and it is ensured that the non-metal rubber layer of the aero-engine case meets the design size requirement.

The present invention discloses a mobile robot capable of operating in multiple environments, belonging to the technical field of mobile robots. The robot comprises a robot body, a robot head mounted above the robot body, mechanical legs A and B mounted in parallel below the robot body, and two mechanical composite feet mounted at the ends of the mechanical legs A and B, respectively. The mechanical composite feet comprise a foot frame, rollers A and B, sprockets A and B, chains A, connectors A and B, connectors C, track wheels A and B, metal rubber tracks, sprockets C and D, chains B, connecting rods, electric telescopic rods, power sources A and B. The present invention is a mobile robot with a rational structure, two motion modes: rolling friction forward and sliding friction forward, and the ability to freely switch motion modes according to changes in the operating environment to improve motion stability and efficiency.

The utility model provides a high-strength fireproof anti-corrosion vehicle sunroof interior trim strip which comprises a sunroof interior trim strip body designed in a line shape, and the sunroof interior trim strip body is installed on a sunroof installation guide rail. The skylight interior trim strip body comprises a line-shaped interior trim strip tail cone, and an interior trim strip upper clamping piece and an interior trim strip lower clamping piece are integrally connected to the front end of the line-shaped interior trim strip tail cone. According to the skylight interior trim strip, a conventionally-used U-shaped interior trim strip is upgraded and improved into the linear interior trim strip, the interior trim strip is firmly clamped in the guide rail through the clamping heads of different structures and positions, the interior trim strip is prevented from falling off from the guide rail, the high rigidity of the interior trim strip is remarkably improved by embedding light metal rubber into the interior trim strip, and the service life of the interior trim strip is prolonged. The outer surface of the interior trim strip is coated with the fireproof and anti-corrosion material, so that the appearance performance of the interior trim strip is remarkably improved, the fireproof and anti-corrosion effect of the interior trim strip is improved, the service life of the interior trim strip is prolonged, the using effect and efficiency of the interior trim strip are greatly improved, and the interior trim strip has obvious commercial application value.

A method for separating metal and rubber parts through solvent soaking comprises the following steps of S1, rubber aging, S2, metal and rubber part separation and S3, residual rubber cleaning. According to the method, the rubber parts are aged and denatured through a polar solvent, meanwhile, the metal parts cannot be eroded or damaged, the original high elasticity and rigidity of the metal parts cannot be lost, the adhesive force of the metal parts is reduced, and the service life of the metal parts is prolonged. And the energy consumption of mechanical separation is subsequently reduced, and excessive damage to the metal part in mechanical separation is avoided, so that the separation of the rubber part and the recycling of the metal part can be efficiently and reliably realized.

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 application discloses a lander foot structure with a foot bottom pattern, comprising a servo electric cylinder and a landing system foot end, the landing system foot end comprising an upper part, a ground contact foot pad and other components, the upper part foot pad is made of a metal rubber material with a porosity gradient distribution, and is constructed into a structure through a laser selective melting technology, and is matched with a reinforcing rib to realize stress redistribution; the foot pad is integrated with a multi-scale topological optimization and a functional modularization, the foot pad is divided into two functional units to disperse stress, prolongs the service life of components, the bottom surface of the ground contact foot pad is provided with a mixed pattern to regulate a friction coefficient, the lander can stably stay on a special-shaped terrain, and can actively cross a complex medium surface together with a landing leg to expand a detection space; when staying on a slope surface, components are coordinately adjusted to accurately constrain an attitude, and safety and stability are ensured; after staying, a spring insertion rod and a telescopic liquid bag are reset to overcome reset obstacles, improve maneuverability, and when the foot pad is separated, the foot pad shakes off lunar dust to maintain performance.

The application provides a pot-shaped metal rubber-based magneto-rheological elastomer damping device and a working method thereof. The device comprises a top plate connected with the damping device, the top plate is connected with a conical magneto-rheological elastomer through adhesion in a slot hole in the middle of the top plate, and the top plate is connected with a ring-shaped magneto-rheological elastomer through adhesion in a convex part around the top plate, the lower surface of the ring-shaped magneto-rheological elastomer is connected with a magneto-rheological elastomer protective cover (4) through adhesion, a coil holder (5) with a winding electromagnetic coil is sleeved in the shell, the electromagnetic coil is connected with a controller (10) through a lead wire, and a pot-shaped metal rubber damper (8) is fixed in the coil holder; the controller is connected with an acceleration sensor (11) at the top plate; the damping device can realize self-adaptive adjustment of system parameters with the change of time and external excitation, the magnetic flux passing through the magneto-rheological elastomer is greatly improved, the rheological performance of the magneto-rheological elastomer is strengthened, and the damping device still has a certain damping effect after power-off.

The utility model relates to an all-metal miniature vibration isolator, which comprises a mounting screw, the lower end of the mounting screw is provided with a thread part, and the upper part of the mounting screw is provided with a radial convex ring, so that an upper outer shaft shoulder and a lower outer shaft shoulder are formed on the mounting screw; the outer shell part is connected to the exterior of the mounting screw in a sleeving mode, an upper inner shaft shoulder and a lower inner shaft shoulder are formed in the outer shell part, and the vibration isolation equipment is fixedly connected with the outer shell part through the equipment mounting structure; the upper elastic piece and the lower elastic piece are both of a cylindrical annular structure, the upper elastic piece is clamped between the upper outer shaft shoulder and the upper inner shaft shoulder, and the lower elastic piece is clamped between the lower outer shaft shoulder and the lower inner shaft shoulder. According to the all-metal miniature vibration isolator, the elastic piece is of a cylindrical annular structure, and the vibration isolator can bear high axial and radial vibration impact; the elastic piece is made of metal rubber, so that the elastic piece is not prone to aging and damage, and the service life of the vibration isolator is prolonged.

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.