94results about How to "Reduce vertical stiffness" patented technology

A system for adjusting the compliance of a wheel is provided. In one embodiment, wheel segments are adjusted, causing the stiffness of the wheel to change. Such adjustments can be made while the wheel is rotating, allowing the wheel compliance to be changed while a vehicle is in motion.

The invention discloses a vibration-absorbing wall which includes a wall body and a wall frame; the wall frame consists of posts and beams. The vibration-absorbing wall is characterized in that the wall body is provided with vibration-absorbing devices; the vibration-absorbing devices are rubber cushions, which are symmetrically arranged at wall angles of the wall body; the rubber cushions are in block shape, and include a pair of horizontal cushions symmetrically arranged at the lower wall angles and a pair of horizontal cushions symmetrically arranged at the upper wall angles; wherein, the horizontal rubber cushions at the lower wall angles can adopt laminated rubber cushions combined with rubber and steel plates as vibration-absorbing parts for reducing vertical deformation; while the horizontal rubber cushions at the upper wall angles are pure rubber cushions without compressive rigidity. The vibration-absorbing wall of the invention can reduce the horizontal and vertical deformation of the wall body and has quite good vibration-absorbing and preventing effect with current building wall body and through adding the vibration-absorbing devices, with simple structure and is convenient in construction. Meanwhile, the invention discloses the construction method of the vibration-absorbing wall.

The invention discloses a method and a system for regulating tire pressure of a tire, belonging to the field of vehicle control. The method comprises the steps of: acquiring vehicle drive condition parameters; and regulating the tire pressure of the tire according to the vehicle drive condition parameters. The system comprises a parameter acquiring module and a tire pressure regulating module. Through acquiring the driving state of a current vehicle, and the tire pressure of the tire is regulated according to the driving state and the current tire pressure signal state of the tire, therefore, the invention ensures that the vehicle can automatically regulate the tire pressure of the tire to be higher tire pressure value under the conditions of better road conditions and higher speed, at the moment, the tire has higher cornering stiffness, thereby ensuring good control stability of the vehicle; and when the vehicle runs on poorer roads, such as cement roads, uneven roads, and the like, the vehicle automatically regulates the tire pressure of the tire to be lower tire pressure value, at the moment, the tire has lower vertical stiffness, thereby immediately absorbing vertical shaking caused by uneven roads and improving the comfortableness of the whole vehicle.

A vehicle frame component, such as a siderail or a cross member, is formed with a generally C-shaped cross section in which the vertical web member has a greatly reduced mass, as compared to a comparable C-channel section of uniform construction. The reduced mass web member has a corresponding reduced effective cross section to substantially reduce the component weight without adversely affecting its vertical stiffness.

A system for adjusting the compliance of a wheel is provided. In one embodiment, wheel segments are adjusted, causing the stiffness of the wheel to change. Such adjustments can be made while the wheel is rotating, allowing the wheel compliance to be changed while a vehicle is in motion.

The invention discloses an anti-pulling three-dimensional rubber friction-pendulum earthquake-isolation support. The anti-pulling three-dimensional rubber friction-pendulum earthquake-isolation support comprises two concave-surface discs correspondingly arranged up and down, a rubber interlayer pad arranged between the two concave-surface discs and two earthquake-isolation discs arranged on the upper side of the concave-surface disc at the upper portion and arranged on the lower side of the concave-surface disc at the lower portion respectively; the upper side and the lower side, in contact with the two concave-surface discs, of the rubber interlayer pad are each provided with a friction slice, vertical belleville springs are connected between the concave-surface discs and the earthquake-isolation discs, first pulling cables are connected between the opposite inner sides of the two concave-surface discs, and second pulling cables are connected between the opposite inner sides of the two earthquake-isolation discs. The anti-pulling three-dimensional rubber friction-pendulum earthquake-isolation support is combined with the advantages of a rubber support and a friction-pendulum support, and the curvature of the rubber interlayer pad and the friction coefficient of a friction pendulum are designed respectively to achieve the advantages of multistage fortifying earthquake isolation; the pulling cables can provide vertical pull for improving the anti-pulling performance of the support, the vertical earthquake-isolation discs can isolate vertical earthquake motion to meet the three-dimensional earthquake-isolation requirement, and the anti-pulling three-dimensional rubber friction-pendulum earthquake-isolation support is more suitable for practical engineering and is convenient to apply and popularize.

The invention discloses a multi-directional and broad-frequency domain vibration / seismic insulation and reduction device comprising an upper steel plate and a lower steel plate which are arranged oppositely and further comprising a viscoelastic supporting seat located between the upper steel plate and the lower steep plate. The viscoelastic supporting seat is fixedly connected with the upper steel plate and the lower steel plate through bolts. A viscoelastic damper is arranged outside the viscoelastic supporting seat and fixedly connected with the upper steel plate and the lower steel plate through bolts. The viscoelastic damper is composed of an upper gear frame and a lower gear frame which are mutually engaged as well as a viscoelastic material covering the upper gear frame and the lower gear frame. A certain gap is formed between the upper gear frame and the lower gear frame and filled with a vulcanized viscoelastic material. An anti-pulling steel rope is arranged between the viscoelastic supporting seat and the viscoelastic damper and fixedly connected with the upper steel plate and the lower steel plate through connecting buckles. According to the vibration / seismic insulation and reduction device, within board frequency, good vibration / seismic insulation and reduction performance in the horizontal and vertical direction is achieved, good robustness and stability are achieved while performance is high.

The invention discloses a manufacturing and assembling method for a variable-rigidity traction rubber pile and a rigidity varying method. The manufacturing and assembling method includes the following steps that a metal bottom board, a bottom elastic rubber body, a metal partition, a metal outer sleeve and a bottom elastic rubber body are bonded together through an adhesive in a high-temperature vulcanized manner; a metal inner sleeve is placed in the metal outer sleeve, so that the top of the metal inner sleeve extends out of the upper end face of the metal outer sleeve at the preset height, and the metal outer sleeve and the metal inner sleeve are vulcanized and bonded together through an upper elastic rubber body; a metal top board is connected with the top of the metal inner sleeve in an interference fit manner, so that an interval is reserved between the metal top board and the upper end face of the metal outer sleeve; and a wear-resisting board is installed on the metal top board through fastening screws. The manufacturing and assembling method is simple and convenient, and a product manufactured through the method can meet the requirement that the product has the trend of the linear flexible damping effect in the early stage and the variable rigidity requirement that the rigidity is acutely increased when deformation is increased in the later stage. A wear-resisting material is added to a stressed face of the product, so that wear of the product under the working condition is reduced, and the dynamic performance of a vehicle can be achieved.

The invention discloses an elastic supporting and vibration isolating device of a ship pipeline system. The device comprises three functional components including a pipe clamp vulcanization component,two low-frequency vibration isolating components and a limiting component; the pipe clamp vulcanization component comprises an upper hoop-type pipe clamp and a lower hoop-type pipe clamp; an upper lining is arranged on the inner wall of the upper pipe clamp; a lower lining is arranged on the inner wall of the lower pipe clamp; the two low-frequency vibration isolating components are fixedly mounted on two sides of the lower pipe clamp in a lifting manner; and each low-frequency vibration isolating component comprises a middle connecting arc plate, a low-frequency vibration absorbing rubber block, a vibration absorber base and a protecting cover. The device adopts the double-layer vibration isolating structure, the low-frequency vibration isolating components adopt 30-60-degree cut vibration absorbing rubber, the rigidity in the vertical direction, the transvers direction and the longitudinal direction is reduced, the three-dimensional equal rigidity is realized, and the vibration isolating effect is good. The whole vibration isolating device is compact in structure and is convenient and easy to mount and maintain. The device is particularly applicable to application occasions of ships having relatively high noise and environmental adaptation requirements.

The invention provides a vertical coordinated vibration isolation or reduction device and an application method thereof. The device comprises an upper support and a lower steel plate which are horizontally arranged, a spiral spring which is vertically clamped between the upper support and the lower steel plate and a combined viscous-elastic cylinder damper which is coaxially installed in the spiral spring; the upper support comprises a circumferential side wing plate and a support top board and a support base board which are respectively fixed at an upper end and a lower end of the side wing plate; the combined viscous-elastic cylinder damper comprises an inner sleeve and an outer sleeve which are coaxially arranged and a viscous-elastic damping layer which is between the inner sleeve andthe outer sleeve by high temperature vulcanization; the combined viscous-elastic cylinder damper passes through and is fixed on the support base plate through a bolt at the top of the inner sleeve; abottom of the outer sleeve is fixed on the lower steel plate. Based on the spring vibration isolation system, the invention adopts a viscous-elastic damping material to increase the energy consumptionability of the device system with large damping ratio, stable performance, good sealing property and suitable for engineering application, and designs a complete spring damping cooperative working system suitable for vertical load-bearing structure to withstand vertical excitation, which plays an excellent role in vibration isolation and vibration reduction.

The invention discloses a low-stiffness magnetic suspension gravity compensator, a driving device and a six-degree-of-freedom micro-motion stage, belonging to the field of semiconductor manufacturingassembly. The gravity compensator comprises a rotor structure and a stator structure; the rotor structure is composed of a magnet bracket and a plurality of pairs of permanent magnet array blocks arranged at the side wall of the magnet bracket in parallel; the stator structure is formed by a stator base, a coil bracket and a central permanent magnet; the center permanent magnet of the stator is subjected to magnetic attraction and magnetic repulsion in the air gap magnetic field generated by the rotor permanent magnet array blocks to achieve the gravity compensation of the structure of the rotor and the load. Two sets of coils are arranged at the left and right sides of the grooves of the coil bracket and the upper and lower portions of the boss to form a driving device with the rotor structure of the magnetic suspension gravity compensator so as to achieve the horizontal and vertical two-degree-of-freedom combined driving; four gravity compensators which are arranged symmetrically anddriving devices form a six-degree-of-freedom micro-motion stage. The low-stiffness magnetic suspension gravity compensator, the driving device and the six-degree-of-freedom micro-motion stage achievethe near-zero stiffness magnetic suspension of the rotor structure and the load in a wide range of motion, and the combined driving device has a simple structure and a light weight.

The invention provides a conical spring stiffness adjusting method. A conical spring comprises an outer sleeve, a rubber body and a mandrel. The rubber body is vulcanized between the outer sleeve and the mandrel. A flange is arranged outside the lower end of the mandrel. A partition plate is arranged in the rubber body, when the lower end of the inner rubber body between the mandrel and the partition plate moves downwards, the inner rubber body bears dual restraints of the flange and the partition plate, and therefore the vertical stiffness of the conical spring is improved. The vertically distributed partition plate is arranged in the rubber body, so that when the lower end of the inner rubber body between the mandrel and the partition plate moves downwards, an outward convex arc section and an outward convex linear section are gradually attached to the upper surface of the flange and are limited in a space defined by the outer side of the mandrel, the upper surface of the flange and the inner side of the partition plate, so that the vertical stiffness of the conical spring can be greatly improved. The vertically distributed three-section type partition plate is arranged in the rubber body, so that the nonlinearity of the vertical stiffness of the conical spring is improved, and the transverse stiffness of the conical spring is improved.

The invention relates to the technical field of shock isolation in building and bridge engineering, in particular to a novel three-dimensional shock isolation device with a tensile function. The novel three-dimensional shock isolation device comprises a top steel platform, a horizontal shock isolation stand, a vertical tensile component, a transition steel platform and a vertical shock isolation component. The horizontal shock isolation stand is connected with the bottom of the top steel platform and the top of the transition steel platform, the vertical shock isolation component is arranged at the bottom of the transition steel platform, the vertical tensile component is arranged on the periphery of the horizontal shock isolation stand in a sleeving mode and connected with the bottom of the top steel platform and the top of the transition steel platform, so the good shock isolation function can be achieved in both the horizontal direction and the vertical direction, the horizontal shock isolation function and the vertical shock isolation function are decoupled without interfering with each other, and safety is high. On the premise that the vertical tensile component does not interrupt the movement of a horizontal shock isolation component or the movement of the vertical shock isolation component, large tensile strength is provided, and high safety stock is provided for preventing the structure from being pulled to be damaged by the stand.

The invention relates to a three-dimensional vibration isolation structure for a small nuclear reactor. A horizontal vibration isolation support is arranged between a foundation base and a base vibration isolation bottom plate; a tuned mass damper support is arranged between the base vibration isolation bottom plate and a tuned mass damper substructure-inner containment; a nuclear reactor supporting structure is arranged in the tuned mass damper substructure-inner containment; the nuclear reactor supporting structure is arranged on the base vibration isolation bottom plate through a vertical vibration isolation support; vertical overturning prevention members are annularly arranged on the periphery of the nuclear reactor supporting structure and fixedly connected with the base vibration isolation bottom plate; horizontal same-position members are arranged between the vertical overturning prevention members and the nuclear reactor supporting structure; and structure vertical damping members are annularly arranged between the vertical overturning prevention members and the nuclear reactor supporting structure. According to the three-dimensional vibration isolation structure, the structure vertical and horizontal vibration isolation effect is remarkable, anti-seismic robustness is good, the vibration reduction effect is stable, and the anti-seismic safety of the nuclear power plant structure of the small nuclear reactor can be improved significantly.

The invention discloses a vertical skid-resistant friction plate used for improving the skid-resistant safety of a welding-type cable saddle. The vertical skid-resistant friction plate is a fanning-shaped corrugated steel plate, a plurality of concentric circle wave trains are evenly distributed from top to bottom on the fanning-shaped corrugated steel plate, the direction of the wave trains is parallel to the upper edge and the lower edge of the fanning-shaped corrugated steel plate, and the lower edge of the fanning-shaped corrugated steel plate is provided with a plurality of approximately n-shaped grooves. The vertical skid-resistant friction plate selects soft steel with the thickness of 12mm-20mm and the surface of the soft steel needs to be sprayed zinc. The vertical skid-resistant friction plate can conveniently separate the cables of a main cable and closely attach to the cables, the lower edge of the fanning-shaped corrugated steel plate is closely attached to the top surface of the arc of a saddle groove, the groove formed in the lower edge is closely buckled with tooth-shaped projections arranged on the top surface of the arc of the saddle groove, and the vertical skid-resistant friction plate can bear a larger vertical shear force. Therefore the vertical skid-resistant friction plate can ensure that the cables of the main cable can generate an even and effective lateral pressing force on the skid-resistant friction plate, the skid-resistant problem of the saddle of the cable tower and the main cable of a three-tower suspension bridge is solved, and the implementation plan is simple, reasonable, safe and economical.

The invention discloses a combined air spring assembly which comprises an upper cover plate, an airbag, a base, an outer metal sleeve, an inner metal press sleeve, a rubber spring set and a steel spring set. The outer metal sleeve is mounted on the base. The inner metal press sleeve is mounted in the outer metal sleeve in a sleeved manner and can move downwards along the inner ring wall of the outer metal sleeve. The rubber spring set is mounted in the inner metal press sleeve in a sleeved manner. The steel spring set is mounted in the rubber spring set in a sleeved manner. The inner metal press sleeve is pressed at the top of the rubber spring set and the top of the steel spring set. The periphery of the upper cover plate is connected with the periphery of the outer metal sleeve through the airbag. An air spring system has the advantages of being simple and compact in structure, low in air leaking heavy load vertical rigidity and high in comfort and stability.

The invention provides a sliding plate supporting seat. The sliding plate supporting seat comprises an upper connecting plate, an outer ring plate, a rubber supporting seat, a high polymer material plate, a stainless steel mirror plate and a lower connecting plate. A vertical bearing system is composed of the upper connecting plate, the rubber supporting seat, the high polymer material plate, thestainless steel mirror plate and the lower connecting plate. In the vertical force transmission process, the rubber supporting seat does not bear the function of a horizontal load; compared with an ordinary elastic sliding plate supporting seat, the rubber supporting seat cannot be cut off under the earthquake action due to the too large friction coefficient of a lower sliding plate; and a horizontal bearing system is composed of the upper connecting plate, the outer ring plate, a lower sealing plate of the rubber supporting seat, the high polymer material plate, the stainless steel mirror plate and the lower connecting plate, and horizontal force is transmitted step by step through the components during an earthquake, so that when the horizontal force reaches the high polymer material plate, relative sliding between the high polymer material plate and the stainless steel mirror plate happens, and the earthquake effect on an upper structure is reduced through friction energy consumption.

The invention discloses a combined air spring system. The combined air spring system comprises an upper cover plate, an air bag, a base, an outer metal sleeve, an inner metal pressing sleeve, a rubberspring set and a steel spring. The outer metal sleeve is arranged on the base, the inner metal pressing sleeve is sleeved with the outer metal sleeve, a gap is formed between the inner metal pressingsleeve and the inner wall of the outer metal sleeve, and the rubber spring set is arranged in the gap. The steel ring is arranged in the inner metal pressing sleeve, the inner metal pressing sleeve is pressed on the tops of the rubber spring set and the steel spring, and the periphery of the upper cover plate is connected with the periphery of the outer metal sleeve through the air bag. The air spring system has the beneficial effects that the structure is simple and compact, the air release heavy load vertical rigidity is low, and comfort and stability are high.

A tire (2) according to the present invention includes a bead (8) having an apex (28), a carcass (10) and a reinforcing layer (16). The carcass (10) includes a carcass ply having a carcass cord constituted by a polyethylene naphthalate fiber. The carcass ply is constituted by a body extended from an equator plane toward the bead (8) and a turned-up portion extended outward in a radial direction. The reinforcing layer (16) is interposed between the body and the turned-up portion. A ratio of a height in the radial direction from a bead base line to an upper end (54) of the reinforcing layer (16) to a tire sectional height is equal to or higher than 45%. A thickness of the reinforcing layer (16) is equal to or greater than 0.3 mm and is equal to or smaller than 2.5 mm. A hardness of the reinforcing layer (16) is equal to or greater than 70 and is equal to or smaller than 95.

A stacked via structure for reducing vertical stiffness includes: a plurality of stacked vias, each via disposed on a disc-like structure. The disc-like structure includes a platted through hole landing supporting the plurality of stacked vias. The platted through hole landing includes a compliant center zone; and spring-like stiffness-reducing connectors for connecting the compliant center zone of the platted through hole landing.

The invention discloses a pre-compaction type air spring system. The pre-compaction type air spring system comprises an upper cover plate, a gasbag, an upper end plate and a lower end plate, wherein the periphery of the upper cover plate is connected with the periphery of the upper end plate through the gasbag; a lower elastomer is connected between the upper end plate and the lower end plate; a pre-compaction plate is arranged on the top of the upper end plate; a higher ring-shaped elastomer is arranged between the pre-compaction plate and the upper end plate; and a first stop part which is positioned in the higher ring-shaped elastomer is arranged on the middle position of the pre-compaction plate. The air spring system has the advantages of being simple in structure, convenient to mount, low in gas-leakage heavy-load perpendicular rigidity and high in comfort and stability.

The invention discloses a rail damping fastener. The rail damping fastener comprises an upper base plate, a lower base plate, an intermediate elastic base plate and an under-rail elastic base plate, the intermediate elastic base plate is arranged between the upper base plate and the lower base plate, the under-rail elastic base plate is arranged on the upper base plate, a boss is arranged on the lower base plate, the upper base plate is externally arranged on the boss in a sleeving mode, a longitudinal first transverse limiting surface is arranged on the upper base plate, a transverse blockingshoulder extending upwards is arranged on the lower base plate, a longitudinal blocking shoulder extending towards the first horizontal limiting surface is arranged at the upper end of the transverseblocking shoulder, the rail damping fastener further comprises a transverse clamping block, and the transverse clamping block is arranged between the first transverse limiting surface and the transverse blocking shoulder. According to the rail damping fastener, by arranging a transverse blocking shoulder structure, the integration of the higher transverse stiffness and the lower vertical stiffness of the rail damping fastener can be achieved without affecting the damping effect of the rail damping fastener.

The invention discloses a vibration damping fastener system for a multi-layer pad. The vibration damping fastener system comprises an elastic layer and a pad, and the elastic layer comprises a lower rail elastic pad (6) and a first elastic layer (4); the pad includes a first pad (5) and a second pad (3), and the first pad (5) is provided with a rail connecting piece (5.1) connected to a rail for fixing the rail (8); the elastic layer comprises a second elastic layer (2); the vibration damping fastener system comprises, in order from top to bottom, the lower rail elastic pad, the first pad (5),the first elastic layer (4), the second pad (3) and the second elastic layer; the invention proposes a compression-based high-level vibration damping fastener, the fastener adopts a spacing arrangement mode of the pad and the elastic layer, the elastic layer is formed into a series form, and low vertical stiffness is obtained so as to achieve higher damping effect; the rail can directly fall to the ground, ensure the safety of use, and utilize the market to accept the promotion.

The invention relates to a vertical-torsion coupled large-amplitude free vibration wind tunnel experiment system. The system comprises two symmetrically-installed supporting frames, the tops of the supporting frames are provided with at least two upper spring fixing arms, and the upper spring fixing arms are connected to the upper ends of upper springs; lower spring fixing arms are arranged at thebottoms of the supporting frames; the lower spring fixing arms are connected to the lower ends of lower springs; the lower ends of the two upper springs are connected through a rigid suspension arm;a bearing seat is mounted on the rigid suspension arm; two ends of a rigid test model are respectively fixedly connected to one end of a rigid shaft; the other end of the rigid shaft is fixedly arranged in the bearing seat; a hub is fixedly connected to the rigid shaft, a torsion center line of the rigid test model is collinear with the axis of the rigid shaft and the center line of the hub, the periphery of the hub is sleeved with and fixedly connected to the middle of a first flexible connecting piece, and two ends of the first flexible connecting piece extend downwards and are connected tothe upper ends of the lower springs respectively. The system is independently provided with a torsional rigidity system, so that the flexibility of the test device is improved.

The invention discloses a vertical vibration isolation bearing for a building. The vertical vibration isolation bearing for the building comprises supporting seats and inhaul cables, wherein the supporting seats are arranged in parallel on the upper and lower sides, a plurality of vertical vibration isolation supporting units arranged in array are arranged in middle gaps of the supporting seats, and the inhaul cables are arranged at the edge position for connecting the supporting seats on the upper and lower sides. The vertical vibration isolation supporting units comprise steel pipes, connecting plates, sandwich steel plates and vibration isolation layers, wherein the steel pipes are vertically arranged at the center position, and the connecting plates, the sandwich steel plates and the vibration isolation layers are arranged in parallel around the steel pipes. The connecting plates are located on the upper and lower sides and in contact with the supporting seats, and the sandwich steel plates and the vibration isolation layers are arranged at intervals alternately in middle gaps formed by the connecting plates on both sides. According to the vertical vibration isolation bearing for the building, on the premise of meeting the requirements of vertical bearing of the structure, the limit of horizontal displacement to the vibration isolation bearing is strengthened.

The invention discloses a shear buckling prevention steel plate shear wall free of bearing the gravity. The shear buckling prevention steel plate shear wall comprises a steel plate wall, steel columns and steel beams. The steel plate wall is placed in a frame formed by the steel columns and the steel beams. The shear buckling prevention steel plate shear wall further comprises horizontal stiffening ribs arranged in the horizontal direction of the steel plate wall. The horizontal stiffening ribs are arranged in the steel plate wall in a horizontal penetrating mode, and outer flanges extending in the vertical direction of the steel plate wall are arranged on the outer edges of the horizontal stiffening ribs. Spaces defined by the horizontal stiffening ribs, the outer flanges of the horizontal stiffening ribs and the steel plate wall are filled with prefabricated reinforced concrete plates. The horizontal stiffening ribs are embedded in the middle of the steel plate wall or among an upper steel plate wall body, a middle steel plate wall body and a lower steel plate wall body and welded to the steel plate wall. The steel plate wall is free of bearing the gravity load and only bears the seismic shear force or the wind shear force so that the situation that the steel plate wall is pressed too early and consequently is buckled can be prevented; and the shear buckling prevention steel plate shear wall is special for resisting shear, so that the shear resistant bearing capacity and large earthquake energy consumption performance of the steel plate wall are improved, the thickness of a steel plate is decreased, and the using amount of steel is saved.

The invention provides a spring damping synergistic vibration / shock isolating and reducing device. The spring damping synergistic vibration / shock isolating and reducing device includes an upper steelplate, a lower steel plate, a spiral spring clamped and installed between the steel plates and a barbed-type viscoelastic cylinder damper placed in the spiral spring. The barbed-type viscoelastic cylindrical damper includes an upper inner sleeve, a lower inner sleeve, a lower outer sleeve, a viscoelastic damping layer and a position controlling plate, wherein the upper inner sleeve is fixed to theupper steel plate, the lower inner sleeve and the lower outer sleeve are installed in a sleeved mode coaxially, the viscoelastic damping layer is arranged between the lower inner sleeve and the lowerouter sleeve in a clamped mode, and the position controlling plate is hooped in the lower inner sleeve in the clamped mode along the section. The outer diameter of the upper inner sleeve is less thanthe inner diameter of the lower inner sleeve, and the inner periphery of the bottom end of the upper inner sleeve is provided with upwards-arranged barbs extending upwards obliquely. The outer periphery of the top end of the lower inner sleeve is provided with downwards-arranged barbs extending downwards obliquely. After the upper inner sleeve slides to the lower inner sleeve, the upwards-arranged barbs and the downwards-arranged barbs are engaged and locked, the bottom surfaces of the inner sleeves abut against the position controlling plate. According to the spring damping synergistic vibration / shock isolating and reducing device, a complete spring damping synergistic working system suitable for vertical excitation bearing of a vertical load bearing structure is designed, the problem oflow damping of the system is solved, and excellent vibration isolating and reducing effects are played.

The invention provides a body silicon MEMS relay and its preparation method. The relay includes one relay matrix, which adopts the positive direction attracting driving means and is composed of the upper part and the lower part. The upper structure includes the monocrystalline silicon structured board with the anchor points and girder construction. There are the switch upper board and the drive metallic board of the upper board on the monocrystalline silicon structured board. The lower structure includes a glass / silicon substrate structure and on the substrate structure there are the switch lower board and the drive metallic board of the lower board corresponding to the witch upper board and the drive metallic board of the upper board. It has stable electrics performance and high reliability and is hard to puncture it when being driven by the high voltage.