51results about How to "Reduce horizontal stiffness" patented technology

A composite vibration isolation system utilizes isolators with negative-stiffness mechanisms to produce low vertical and horizontal natural frequencies to the system by allowing both the horizontal stiffness and horizontal natural frequencies to be adjusted, for example, by turning adjustment screws.

The invention discloses a three-dimensional shock isolation device. The three-dimensional shock isolation device comprises at least one three-dimensional shock isolation unit arranged between two embedded plates. Each three-dimensional shock isolation unit is composed of a horizontal shock isolation device and a vertical shock isolation device, wherein the horizontal shock isolation device and the vertical shock isolation are arranged in a vertical series connection mode. The horizontal shock isolation device is a vertical column-shaped elastic body arranged in a vertical mode in the axial direction, and the horizontal shock isolation device carries out elastic deformation through radial displacement deformation and torsion angle displacement deformation of the vertical column-shaped elastic body. The vertical shock isolation device is formed by parallel connection of at least three inclined column-shaped elastic bodies with equal dimensions so as to form a winding assembly body space structure, and therefore vertical deformation stood by the vertical shock isolation device is converted into inclined displacement and torsion placement of the inclined column-shaped elastic bodies. The three-dimensional shock isolation device can isolate three-way earthquake and environment vibration at the same time, and therefore shock / vibration response and shock / vibration delivery of a protected structure or device adopting the three-dimensional shock isolation device and under the effects of earthquake / the vibration can be controlled effectively, and safety under the effects of earthquake / the vibration can be guaranteed.

The invention discloses a three-dimensional vibration insulation and reduction device and method. According to the three-dimensional vibration insulation and reduction device, horizontal vibration is insulated through a rubber support on the lower portion, and vertical vibration of vertical rail transit is insulated through a vertical vibration insulation device on the upper portion. The horizontal rigidity of the rubber support is small, under the action of an earthquake, transfer of the earthquake action to an upper building structure is reduced, and thus, horizontal vibration is insulated. The vertical vibration insulation device adopts disc spring sets, the vertical rigidity is small, and under the action of ground vertical vibration waves caused by metro operation, transfer of vertical vibration to the upper building structure is stopped. Meanwhile, through the deformation and reset processes of the disc spring sets, vertical vibration applied to the structure is reduced, a part of vibration energy is consumed through friction resistance, thus, the structure is stressed more reasonably, the structure safety is guaranteed, and accordingly vertical vibration of vertical rail transit is insulated. The three-dimensional vibration insulation and reduction device has the characteristics of being simple in structure, stable in vibration insulation and reduction performance, reliable and durable.

The invention relates to a novel swing self-reset bridge pier with an energy dissipation device and an application thereof, belonging to the technical field of anti-seismic and seismic mitigation andisolation of bridges. The novel swing self-reset bridge pier with the energy dissipation device comprises a cap beam (1), a pier body (2), a bearing cap (3), pile foundations (4), prestressed steel bars (6) and shear anchor bolts (7). The bearing cap (3) is anchored to the ground through the pile foundations (4), and the cap beam (1) is anchored to the bearing cap (3) through the pier body (2), the prestressed steel bars (6) and the shear anchor bolts (7). The novel swing self-reset bridge pier with the energy dissipation device further comprises a tension-compression combined energy dissipation device (5) and the tension-compression combined energy dissipation device (5) is installed and fixed at the junction of the bottom of the pier body (2) and the top surface of the bearing cap (3). The swing self-reset bridge pier has the obvious advantages of no damage after earthquake, small residual deformation and recoverable structure.

The invention relates to low-modulus high-damping rubber for a building. Raw materials comprise a crude rubber matrix, carbon black, a plasticizer, a flame retardant, a damping filling material, an anti-aging agent, an antioxidant and a cross-linking agent; the crude rubber matrix is halogenated butyl rubber, and is prepared from chlorinated butyl rubber and brominated butyl rubber; the damping filling material is graphene or a fatty-acid metal salt or is prepared from the graphene and the fatty-acid metal salt. The crude rubber matrix is first subjected to thin-passing for 5 to 10 times by adopting an open mixer or an internal mixer; the carbon black, the plasticizer, the flame retardant, the anti-aging agent, the antioxidant, the damping filling agent and the cross-linking agent are added into the crude rubber matrix in sequence according to a proportion, and an obtained mixture is uniformly mixed; when the antioxidant is added, a mixing temperature is controlled to be 100 to 120 DEG C, a mixing temperature at other time is controlled to be 70 DEG C or below, and an overall mixing time is controlled to be 10 to 20 minutes; afterwards, a proper amount of mixed rubber is put into a corresponding mold, and is subjected to vulcanization molding in a press vulcanizer. The low-modulus high-damping rubber has the hardness which is 35 to 40 (shore A) while having high damping, and is low in horizontal stiffness; the shock insulation effect cannot be decreased.

The invention discloses an energy dissipation three-dimensional isolation bearing with oblique slide damping, which comprises a three-dimensional isolation device which is arranged between an upper structure and a foundation bearing platform. The three-dimensional isolation device is composed of horizontal isolation units, a friction energy dissipation unit and a vertical isolation unit which are in up-and-down serial connection. The horizontal isolation units are vertical lead rubber bearing are in axial vertical installation. The friction energy dissipation unit consists of an upper friction card slot and a lower friction card slot which are respectively in buckle connection. Through the sliding friction of contact surface , the initial support and dissipation shock / vibration energy is provided, and a certain tensile function is produced. The vertical isolation unit comprises at least two dimensions tilting the lead rubber bearing in parallel connection, which forms a set of cylindrical structure with symmetrical space. The vertical deformation of the vertical isolation unit is transferred into the inclined deformation and expansion displacement of an inclined rubber bearing. The energy dissipation three-dimensional isolation bearing with oblique slide damping also isolates three-direction earthquake and environmental vibration. By using the device of the protected structure or equipment under earthquake vibration / shock / vibration response and shock / vibration transfer will be brought under effective control, and the safety is protected under shock / vibration.

The invention relates to a roll shaft type metal shock-insulating supporting seat which is used for base shock insulation in house buildings. The roll shaft type metal shock-insulating supporting seat comprises an upper connection plate, a roll shaft, a roll shaft frame, a middle end plate, an L-shaped pull-resisting connection plate, a pretightening force base plate, a lower connection plate, friction type high-strength bolts and high-strength pull-resisting bolts. The roll shaft type metal shock-insulating supporting seat can be used as a base shock-insulating element to be applied to low-rise building structures, high-rise building structures and super high-rise building structures. When the earthquake action is too large, and the shock-insulating supporting seat is enabled to bear pull force, the L-shaped pull-resisting connection plate and the high-strength pull-resisting bolts play roles in pull resistance. Meanwhile, polyfluotetraethylene plates with extra-low friction coefficient slide between each other, and the roll shaft type metal shock-insulating supporting seat still can play the shock-insulating role when the roll shaft type metal shock-insulating supporting seat is pulled.

The invention relates to a vibration isolator that includes a coil spring. In a horizontal direction, the coil spring is rigidly connected to the base or to the load to be isolated.

A horizontal-motion vibration isolator utilizes a plurality of bent flexures to support an object to be isolated from horizontal motion. Each bent flexure includes a fixed end coupled to a base and a floating end which is cantilevered and coupled to the object being isolated. The arrangement of bent flexures allows the vertical height of the isolator to be reduced without compromising vibration isolation performance. Compressed springs or spring-like elements can be added to bear some of the weight of the object being isolated thus increasing the payload capacity of the isolator.

The invention discloses an earthquake-isolation energy dissipator for an ultra-high-voltage converter transformer. The earthquake-isolation energy dissipator comprises a plurality of earthquake-isolation supports, steel plates and thin rubbers which are arranged horizontally are arranged on the earthquake-isolation supports from top to bottom at intervals, and central holes are arranged at centers of the earthquake-isolation supports and provided with lead cores inside. The earthquake-isolation energy dissipator is characterized by further being provided with a squared foundation valve plate composed by steel beams, an upper connecting plate and a lower connecting plate, wherein the plurality of earthquake-isolation supports are installed at steel beam nodes of the foundation valve plate, the upper connecting plate and the lower connecting plate are parallel, and the upper and lower surfaces of the earthquake-isolation supports are connected with the centers of the upper connecting plate and the lower connecting plate respectively. According to the earthquake-isolation energy dissipator, the stability is guaranteed, simultaneously, the horizontal stiffness is small, the earthquake-isolation damping effect can be improved, soft limiting and anti-falling functions are provided, the safety of the earthquake-isolation energy dissipator under the action of earthquakes can be guaranteed, when the earthquake-isolation fails, a certain damping effect is also provided, and the safety function is provided in case of failure. The earthquake-isolation energy dissipator is low in construction cost, simple in construction and provided with good social benefits.

The invention relates to a laminated rubber support reinforced by combining fine high-strength steel wire meshes with steel fibers. The laminated rubber support consists of rubber bodies, fine high-strength steel wire meshes, outer-layer protecting rubber and steel fibers, wherein the fine high-strength steel wire meshes are thick meshes woven by high-strength steel wires, and the fine high-strength steel wire meshes are closely distributed in the rubber bodies layer by layer to restrain the side deformation of the rubber bodies, so that the support has rigidity and load-bearing capacity required by normal use; steel fiber materials are distributed in rubber in disorder, so that the mechanical property of the rubber bodies is improved, the connection of the fine high-strength steel wire meshes and composite rubber materials is closer, and the restraining effect is enhanced; favorable deformation capacity of the fine high-strength steel wire meshes and the connection action of the steel fibers ensure that the rubber bodies and the high-strength steel wire meshes can still synergistically work under the condition of extreme deformation, and the problems of adhesive failure and the like cannot occur. Under the action of earthquake, the laminated rubber support allows larger shearing deformation until upper and lower surfaces completely break away from a contact surface to present an overturning state and even generate horizontal scrolling, the earthquake force of an upper structure is prevented from being transmitted to a lower structure, the effect of earthquake insulation is exerted, and the safety of a bridge structure is ensured.

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 relates to a protection and damping device for an ocean platform, and belongs to the technical field of ocean structures. The device comprises a scissors type displacement magnifying unit, a lamination rubber support, an upper part support platform, a middle part support platform, a lower part support platform, a spacing unit, an ice breaking conical surface body, a groove-shaped connection plate and a bolt. The device is axially symmetric when taking the middle part support platform as a symmetric axis, and is also axially symmetric when taking a pile leg as a symmetric axis. The device can reduce horizontal stiffness of a conical body less, has better resilience and energy consumption damping performance, can reduce compression, friction and vibration effects of ice and wave excitation on the structure effectively, the response of the platform is reduced, and ice-excited vibration problem of the ocean platform is fundamentally solved.

The invention relates to a fixed-type vibration absorption and noise reduction rubber support for a rail transit bridge. The fixed-type vibration absorption and noise reduction rubber support for the rail transit bridge comprises an upper support plate (2) and a lower support plate (8), wherein four upper anchor bars (1) are arranged on the upper support plate (2), four lower anchor bars (5) are arranged on the lower support plate (8), four lower wedge-shaped fixed blocks (7) are arranged on the lower support plate (8), the four lower wedge-shaped fixed blocks (7) are correspondingly arranged, four upper wedge-shaped fixed blocks (4) corresponding to the four lower wedge-shaped fixed blocks (7) are respectively arranged at the bottom of the upper support plate (2), and vulcanized rubber plates (6) are respectively arranged between the corresponding lower wedge-shaped fixed blocks (7) and upper wedge-shaped fixed blocks (4). The fixed-type vibration absorption and noise reduction rubber support for the rail transit bridge has the advantages that the vertical rigidity and the vertical vibration absorption damping are guaranteed to be enough and the weak vibration phenomenon produced by rails during operation is weakened.

The invention belongs to the technical field of shock absorption devices, and discloses a combined three-dimensional shock insulation support which comprises a first connecting plate, a second connecting plate and a supporting part located between the first connecting plate and the second connecting plate, and a plurality of buffer mechanisms are further arranged between the first connecting plateand the second connecting plate. The supporting part comprises a plurality of rubber layers, a plurality of steel plates and a plurality of protective sleeves, the rubber layers and the steel platesare sequentially stacked at intervals, turned edges are arranged on the steel plates, the turned edges are buckled with the rubber layers, the protective sleeves wrap the peripheries of the rubber layers and the steel plates, and each buffer mechanism comprises a movable hinge, a damper, a connecting rod and a pin shaft. By means of the laminated structure of the steel plates and the rubber and the design of the flanged steel plates, the vertical and horizontal shock insulation effects are efficiently improved, the buffering mechanisms are stressed and deformed to effectively achieve the shockabsorption and energy consumption effects, and the problems that a traditional shock insulation support is insufficient in horizontal and vertical shock insulation capacity and insufficient in stability at the same time are solved.

The invention discloses a base isolating device. The device is a support which is mounted between an upper structure and a base structure of a building and turns into one part of the upper structure and the base structure of the building, a gap is formed between the upper structure and the base structure of the building so that the upper structure of the building can be prevented from being corroded, and the service life is prolonged. The support is used for connecting a middle concave steel plate and a lower base plate through a plurality of oil dampers and a plurality of ball buffers, the earthquake absorbing power is increased by increasing the spring height, and thus the effect of base isolation can be achieved. The base isolating device is reasonable in design, the oil dampers, the ball buffers, spiral springs and elastic buffer balls are ingeniously combined together to achieve combined action so that the response accelerated speed and deformation of the upper structure can be decreased, vibration transmitted to the upper structure is reduced, the horizontal stiffness is small, the earthquake response of the upper structure is also made smaller, good elastic-plastic performance is achieved, the original state can be recovered automatically, the seismic isolation effect is good, earthquake disasters are lightened, and the personal casualties and property losses are reduced.

A horizontal-motion vibration isolator utilizes a plurality of bent flexures to support an object to be isolated from horizontal motion. Each bent flexure includes a fixed end coupled to a base and a floating end which is cantilevered and coupled to the object being isolated. The arrangement of bent flexures allows the vertical height of the isolator to be reduced without compromising vibration isolation performance. Compressed springs or spring-like elements can be added to bear some of the weight of the object being isolated thus increasing the payload capacity of the isolator.

The invention discloses a liquid-bag type shock isolator for shock isolation of cultural relics and showcases and belongs to the field of cultural relic shock isolation. The liquid-bag type shock isolator comprises a top steel plate, a rubber bag, a bottom steel plate, an oil filling hole, silicon oil filled into the rubber bag, a groove and a raised plate. The top steel plate and the bottom steel plate are connected through the rubber bag which is filled with the silicon oil. The silicon oil is filled through the oil filling hole. The groove is formed in the top steel plate, and the raised plate is arranged on the bottom steel plate. The size of the rubber bag is equal to those of the groove and the raised plate. Different application requirements can be met by regulating shape and size of the top steel plate and the bottom steel plate, the thickness of the rubber bag and the viscosity of the silicon oil. The liquid-bag shock isolator is simple in structure, small in thickness and easy to be standardized and has both horizontal shock isolation capacity and vertical shock isolation capacity.

The invention relates to a fixed-type aseismic noise reduction rubber support for a rail transit bridge. The fixed-type aseismic noise reduction rubber support for the rail transit bridge comprises an upper support plate (2), a middle seat plate (8), a lower support plate (16), a rotating spherical plate (9), a dual-spherical crow (10) and a main slidable spherical plate (11), wherein the rotating spherical plate (9) is arranged at the bottom of the middle seat plate (8), the dual-spherical crow (10) is arranged between the rotating spherical plate (9) and the dual-spherical crow (10), the upper spherical surface of the dual-spherical crow (10) is arranged in the concave spherical surface of the rotating spherical plate (9) in a matched manner, the lower spherical surface of the dual-spherical crow (10) is arranged on the concave spherical surface of the main slidable spherical plate (11) in the matched manner, and the convex spherical surface of the main slidable spherical plate (11) is arranged in the concave spherical surface of the lower support plate (16) in the matched manner. The fixed-type aseismic noise reduction rubber support for the rail transit bridge realizes vibration absorption and noise reduction and aseismic energy dissipation functions of the urban rail transit bridge.

Disclosed herein is an engine mounting structure for reducing vibration. In particular, an engine having a mass is mounted to a damper pulley or a drive plate thereof to form an outer balancer. A roll mount is positioned on a virtual yaw axis after the virtual yaw axis is set in the engine, and an engine mount is mounted to one end of a virtual torque roll axis after the virtual torque roll axis is set in the engine. Furthermore, a transmission mount is mounted to the other end of the virtual torque roll axis. Therefore, the mounts are mounted to the engine to reduce vibration at the time of idle vibration, thereby making it possible to improve NHV performance of a vehicle and increase salability and driving convenience of a driver.

The invention provides a metal composite energy dissipater with double-order yield points for a shock insulation layer. The metal composite energy dissipater comprises a first yield energy dissipation section and a second yield energy dissipation section. The first yield energy dissipation section is formed by orthogonally arranging four groups of spiral steel bar energy dissipation units and is used for absorbing earthquake energy input in two directions; and the second yield energy dissipation section is made of a variable-cross-section yield energy dissipation lead pipe, and end plates are arranged at the upper end and the lower end of the second yield energy dissipation section to provide end restraint. The metal composite energy dissipater has the deformation capacity matched with large-earthquake displacement of the shock insulation layer, and under the action of a rare earthquake and under the condition that the shock insulation layer has larger displacement, the normal energy dissipation and shock absorption working state can still be kept; and meanwhile, the metal composite energy dissipater has the characteristic of double-order yield energy dissipation, the output of the metal energy dissipater can be increased in stages along with the increase of the earthquake action, a hysteretic energy dissipation curve of a damper is full under different earthquake magnitudes, and it is guaranteed that the metal composite energy dissipater has the excellent energy dissipation and shock absorption effect under the different earthquake magnitudes.

A one-way slide type vibration and noise reduction rubber support of rail transit bridge comprises an upper support plate (2) and a lower support plate (8), wherein the lower wedge fixing block I (5) and the lower wedge fixing block III (10) on the lower support plate (8) are opposite to each other, the lower wedge fixing block II (7) and the lower wedge fixing block IV (11) on the lower support plate (8) are opposite to each other, the bottom of the upper support plate (2) is correspondingly provided with four upper wedge fixing blocks (4), a vulcanized rubber plate I (6) is disposed between the lower wedge fixing block I (5) and the corresponding upper wedge fixing block (4), a vulcanized rubber plate II (12) is disposed between the lower wedge fixing block II (7) and the corresponding upper wedge fixing block (4), a vulcanized rubber plate III (13) is disposed between the lower wedge fixing block III (10) and the corresponding upper wedge fixing block (4), and a vulcanized rubber plate IV (14) is disposed between the lower wedge fixing block IV (11) and the corresponding upper wedge fixing block (4). The one-way slide type vibration and noise reduction rubber support has the advantages that sufficient vertical rigidity and vertical vibration reduction damping are guaranteed, and weak vibration of rails during operation is weakened.

The invention discloses a flexible telescopic mechanism used for a bridge. The flexible telescopic mechanism comprises a crossed connecting rod assembly. The connecting positions of the crossed connecting rod assembly are connected through flexible linings. The flexible linings are arranged in the connecting positions of the crossed connecting rod assembly in an interference fit manner. Connectingseats connected with a bridge beam body are rotationally installed in the flexible linings at the crossed connecting positions of the crossed connecting rod assembly, and pin shafts are installed inthe flexible linings at the connecting positions of the end portions of the crossed connecting rod assembly in a clearance fit manner. By means of the flexible telescopic mechanism used for the bridge, the uniformity of the seam width of the beam body is ensured, the flexible telescopic mechanism can adapt to the certain displacement and rotating angle between an edge beam and a middle beam of thebridge when a vehicle passes through the bridge, the impact effect is weakened, the service life is prolonged, the driving comfort is improved, impact noise is lowered, the problems that the seam width of an original telescopic device is not uniform and the impact response is large can be well solved, flexible deformation of the telescopic mechanism is achieved through the flexible linings, the horizontal impact effect of the telescopic mechanism is weakened, the impact and vibration noise caused when the vehicle passes through the bridge are weakened, and the comfort of the vehicle is improved. The invention further provides a bridge telescopic device.

The invention discloses a device capable of randomly adjusting horizontal rigidity and adapting to wind resistance and shock insulation. The device comprises a shock insulation layer which is arrangedbetween an upper structure and a lower structure and is composed of a plurality of shock insulation supporting bases and a plurality of horizontal rigidity mutation control devices, wherein the shockinsulation supporting bases are arranged below columns and shear walls of the upper structure, and provide vertical bearing force and horizontal rigidity for the columns and the shear walls of the upper structure, the horizontal rigidity mutation devices are arranged below the upper shear walls, under the action of wind loads, horizontal rigidity and horizontal bearing force provided by the horizontal rigidity mutation devices can effectively convey the wind loads to the lower structure or a foundation, and horizontal rigidity mutation of the horizontal rigidity mutation control devices is zero under the effect of an earthquake, so that the shock insulation layer plays a shock insulation effect. According to the device, a rigidity mutation control mechanism is formed by utilizing a maintenance structure of the shock insulation layer, or a mechanical principle, a hydraulic technology and an automatic control technology are used for adjusting and controlling the horizontal rigidity of the structure, the rigidity mutation is realized, and the purpose of effectively insulating the earthquake and resisting the wind loads is achieved.

A wood sliding shock-insulation support comprises an upper connecting plate and a lower connecting plate. The upper connecting plate is provided with upper bolts used for being connected with an upper structure. The lower connecting plate is provided with lower bolts used for being connected with a lower structure. A plurality of holes are symmetrically formed in the upper connecting plate and the lower connecting plate, and wood rods are inserted in the holes and located between the upper connecting plate and the lower connecting plate. The wood sliding shock-insulation support has the advantages of being high in vertical bearing capacity and small in horizontal rigidity, is capable of guaranteeing the sliding shock-insulation effect of the upper structure of the support under the action of an earthquake, and has the characteristics of being environmentally friendly in use material, low in manufacturing cost and simple in structure. The wood material is high in toughness, light in self structure, high in elasticity recovery performance and capable of being reset automatically when the action of an earthquake is small.

The invention provides a three-dimensional shock insulation layer which comprises a vertical shock insulation layer and a horizontal shock insulation layer, a top plate is arranged at the top of the vertical shock insulation layer, and a bottom plate is arranged at the bottom of the horizontal shock insulation layer; the vertical shock insulation layer and the horizontal shock insulation layer are arranged in a stacked mode in the vertical direction, and a middle partition plate is arranged between the vertical shock insulation layer and the horizontal shock insulation layer. The three-dimensional seismic isolation device has the advantages of being low in vertical and horizontal rigidity, high in damping, high in buckling-restrained stability and high in swing resistance, a three-dimensional seismic isolation function can be achieved, an earthquake or vibration effect is effectively isolated, and seismic isolation protection is formed for buildings, structural facilities or equipment and the like.

A one-way slide type vibration and noise reduction rubber support of rail transit bridge comprises an upper support plate (2) and a lower support plate (8), wherein the lower wedge fixing block I (5) and the lower wedge fixing block III (10) on the lower support plate (8) are opposite to each other, the lower wedge fixing block II (7) and the lower wedge fixing block IV (11) on the lower support plate (8) are opposite to each other, the bottom of the upper support plate (2) is correspondingly provided with four upper wedge fixing blocks (4), a vulcanized rubber plate I (6) is disposed between the lower wedge fixing block I (5) and the corresponding upper wedge fixing block (4), a vulcanized rubber plate II (12) is disposed between the lower wedge fixing block II (7) and the corresponding upper wedge fixing block (4), a vulcanized rubber plate III (13) is disposed between the lower wedge fixing block III (10) and the corresponding upper wedge fixing block (4), and a vulcanized rubber plate IV (14) is disposed between the lower wedge fixing block IV (11) and the corresponding upper wedge fixing block (4). The one-way slide type vibration and noise reduction rubber support has the advantages that sufficient vertical rigidity and vertical vibration reduction damping are guaranteed, and weak vibration of rails during operation is weakened.

The invention provides a vibration and shock double-control structure for a wood structure ancient building along a subway and a design method. The control structure comprises a vibration isolation layer between the bottom of the wood structure ancient building and a platform foundation and dampers arranged above square columns and connected with columns, wherein the vibration isolation layer comprises an underpinning chassis (5) located at the bottom of the building, a vibration isolation support (4) and a vibration isolation support chassis (6) located on the platform foundation and used for supporting the vibration isolation support. Meanwhile, based on numerical analysis, the complete and feasible design method is provided, and the vibration isolation support and the dampers are optimally configured. According to the double-control structure and the design method, the vibration influence of the subway can be effectively relieved, and the requirement for anti-seismic protection of the wood structure ancient building can be met.

The invention discloses a horizontal exciting device for testing a cross coupling coefficient of an inertia sensor. The device comprises a suspension structure, an exciting unit and an adjustment mechanism. The suspension structure is used for fixed connection of the inertial sensor, uses a multi-reed suspension manner, and has the advantages of low horizontal rigidity and high cross inhibition ratio; the exiting unit generates a force needed by motion by interaction between coils and permanent magnets, and angular motion in the vertical direction and horizontal movement of a non-sensitive shaft can be inhibited by controlling the magnitude of current in the driving coils and feedback control of the non-driving coils; and the adjustment mechanism is used to adjust the effective work lengths of the reeds, and ensure that the effective lengths of the reeds are consistent during work of the whole device. Via design of the suspension structure, exciting unit and adjustment mechanism, the problem that the exciting device cannot generate purely horizontal vibration due to high motion coupling in the different freedom degrees in the prior art can be solved.

The invention provides a damping vibration isolator for electric facilities. The vibration isolator comprises a top plate, a middle plate and a bottom plate arranged coaxially and parallel in the horizontal direction, and a support and a limiting member are arranged between every two adjacent plates. The vibration isolator is equipped with a vertical limit device to limit the tensile displacement of the laminated support, avoiding the tensile damage of the support due to the stretching distance exceeding its maximum tensile limit, and prolonging the service life of the vibration isolator .