95results about How to "Good vibration isolation" patented technology

The invention provides a vibration analysis method of a reactor vibration isolation system, a program product and electronic equipment. The method comprises the following steps: acquiring a vibration signal of a vibration isolation bracket in a working state; extracting vibration characteristics from the vibration signals by using time domain analysis and frequency domain analysis; according to the vibration characteristics, determining association between the structural characteristics of the vibration isolation bracket and the vibration characteristics to obtain first association; according to the finite element analysis and the first relevance, a finite element model of the vibration isolation support is established; according to modal analysis and a finite element model, the inherent frequency of the vibration isolation support is determined, the correlation between the inherent frequency and the external excitation frequency is determined, and second correlation is obtained; according to the first relevance, the second relevance and a finite element model, the influence of different structural features on the vibration propagation path of the vibration isolation support is simulated, and the damping effect is obtained; and according to the damping effect, the vibration isolation support is optimized. The problem that it is difficult to guarantee the damping effect and the good vibration isolation performance of a vibration isolation support at the same time in the prior art is solved.

The three-degree-of-freedom parallel vibration isolation platform with the quasi-zero stiffness characteristic comprises a static platform, a movable platform and a plurality of sets of branch chains, and each branch chain comprises a supporting column, a vertical spring, an L-shaped supporting frame, an upper connecting rod, a lower connecting rod and a horizontal spring; the lower end of the supporting column is fixed to the static platform, and the upper end of the supporting column is connected with the lower end of the vertical spring through a first adjusting mechanism. The upper end of the vertical spring is fixed below the movable platform; the lower end of the L-shaped supporting frame is fixed to the static platform, the horizontal spring is installed on the L-shaped supporting frame through the spring seat, and the spring seat, the lower connecting rod, the upper connecting rod and the movable platform form a first rotating pair, a second rotating pair and a third rotating pair which are parallel to one another. The three-degree-of-freedom vibration isolator has the flexible motion characteristic, the space three-translation-degree-of-freedom vibration isolation requirement is met, and by adjusting the pre-compression amount of the springs, the approximate zero-rigidity characteristic can be achieved in the X direction and the Y direction, and the zero-rigidity characteristic can be achieved in the Z direction.

A large-scale precise micro-vibration isolation self-adaptive active and passive composite space electromagnetic array damping regulation and control device belongs to the technical field of vibration isolation and adopts 4n (n is greater than or equal to 1 and n belongs to N +) layers of uniform-section magnetic rings which are arranged in an array along the axial direction and are vertically magnetized between adjacent layers to form an inner permanent magnet array and an outer permanent magnet array which are coaxially nested, so that a high-flux-density excitation magnetic field is constructed around a conductor plate; the conductor plate moves relative to the magnetic field to generate a strong damping effect. When the external excitation frequency changes, the current in the coaxial nested coil on the outer side of the conductor plate is accurately regulated and controlled through speed feedback, and the damping force is dynamically adjusted. The high damping characteristic is shown during low-frequency micro-vibration, and the vibration transmissibility is effectively reduced; and during high-frequency micro-vibration, the low-damping characteristic is presented, and high-efficiency attenuation of vibration interference is realized. According to the active and passive composite damping regulation and control strategy, the adaptability and stability of large-scale precise micro-vibration isolation and the vibration isolation performance of the large-scale precise micro-vibration isolation in a complex vibration environment are enhanced.

The invention provides a vehicle active suspension control method and system considering the influence of a road surface slope, and relates to the technical field of vehicle control, and the method comprises the steps: constructing an active suspension dynamic model and an ideal reference model of a three-axle vehicle considering the influence of the road surface slope; obtaining a vehicle vertical displacement error, a vehicle pitch angle error and a vehicle roll angle error based on the model; acquiring vehicle vertical motion lumped interference, vehicle pitching motion lumped interference and vehicle roll motion lumped interference based on an extended state observer; the ideal control force of the vehicle is further obtained; and decoupling based on the ideal control force of the vehicle to obtain the active action force of each suspension. According to the method, the influence of the slope of the road surface on the dynamic model of the three-axis vehicle active suspension is considered, the actual dynamic state of the vehicle can be reflected more accurately, and energy consumption is low while the excellent vibration isolation effect is achieved.

The embodiment of the invention discloses a connector and pressure equipment, relates to the technical field of vibration isolation connection, and solves the problem of poor vibration isolation effect of a vacuum corrugated pipe. The connector comprises a first flange, a second flange, N corrugated pipes, N-1 connecting pieces and N-1 flexible supporting pieces. The first flange and the second flange are oppositely arranged. N > = 2. The N corrugated pipes are all located between the first flange and the second flange. The N corrugated pipes are sequentially arranged in a sleeved mode from inside to outside. The corrugated pipe located on the innermost layer is connected with the first flange. The corrugated pipe located on the outermost layer is connected with the second flange. Every two adjacent corrugated pipes are connected through the corresponding N-1 connecting pieces. The N-1 flexible supporting pieces are all arranged on the outer side of a cavity defined by the N corrugated pipes, the N-1 connecting pieces and the N-1 flexible supporting pieces. And the (N-1) flexible supporting pieces are respectively connected with the (N-1) connecting plates. And when N is equal to 2, the flexible supporting piece is connected with the first flange or the second flange. When N is larger than 2, N-1 flexible supporting pieces are connected with the first flange and the second flange respectively.

The invention relates to the technical field of hard rock stratum blasting construction, and discloses a hard rock stratum excavation device based on blasting vibration safety control and a using method of the hard rock stratum excavation device. The technical problems that in the prior art, harmful effects exist in underground engineering drilling and blasting method construction, and control is difficult are solved. The system comprises a blasting structure arranged in a hard rock stratum section and a monitoring module arranged on the earth surface, the blasting structure comprises blast holes and vibration reduction holes, the blast holes comprise slotting holes, auxiliary holes and peripheral holes, eccentric non-coupling vibration isolation charging structures are arranged in the slotting holes and the auxiliary holes, and the vibration reduction holes are arranged in the peripheral holes. Comprising a radial non-coupling charging structure and an axial non-coupling charging structure, an energy gathering cover interval charging structure is arranged in a peripheral hole, a vibration reduction hole is formed between a blast hole in a tunnel and a protection object, and the monitoring module comprises measuring points and vibration meters which are arranged in excavated and non-excavated areas on the two sides of a tunnel face. According to the method, the technical level of hard rock stratum blasting excavation construction is improved, and metro hard rock stratum blasting fine design, meticulous construction and control over harmful effects are achieved.

The invention relates to a high-static low-dynamic bionic vibration isolation system with adjustable mechanical properties, and belongs to the technical field of floating slab vibration isolators, the high-static low-dynamic bionic vibration isolation system comprises a bearing frame, a linear damping assembly and two frog leg bionic damping assemblies, the bearing frame comprises a top plate, a middle plate, a bottom plate and two guide rods, the top plate, the middle plate and the bottom plate are sequentially distributed at intervals from top to bottom. Guide holes are formed in the positions, close to the two ends, of the middle plate. The two guide rods movably penetrate through the two guide holes respectively, the top ends of the guide rods are fixed to the top plate, and the bottom ends of the guide rods are fixed to the middle plate. The two ends of the linear damping assembly are fixed to the middle plate and the top plate correspondingly. The two ends of the two frog leg bionic damping assemblies are fixed to the middle plate and the bottom plate respectively. When the bearing frame is excited by external force, the linear damping assemblies can continuously transmit the force excitation to the frog leg bionic damping assemblies on the lower layer, and the frog leg bionic damping assemblies have the mechanical property of dynamic stiffness gradual quasi-zero and can show good vibration isolation performance and bearing capacity.

The invention discloses a multi-arc-shaped vibration reduction and isolation structure and a construction method thereof, and relates to the technical field of building vibration isolation, the multi-arc-shaped vibration reduction and isolation structure comprises a groove, the groove is arranged between a vibration source and a building, and a plurality of steel plates, a prefabricated reinforced concrete plate, a prefabricated elastic material plate and a cast-in-place concrete plate are horizontally and sequentially arranged in the groove; the steel plates are horizontally arranged on the side wall, close to the vibration source, of the groove, and each steel plate is arc-shaped; one end of each anchor rod assembly penetrates through the prefabricated reinforced concrete plate and the prefabricated elastic material plate, and the other end of each anchor rod assembly is embedded into the cast-in-place concrete plate. Vibration waves are blocked through the circular-arc-shaped steel plates, multi-angle reflection and refraction are generated when the vibration waves make contact with the steel plates, the vibration isolation effect is provided, the rigid materials and the elastic materials are alternately arranged in the grooves, the vibration isolation effect is further improved, the defects of vibration isolation empty grooves and vibration isolation groove filling are overcome, the structure is stable, and the vibration isolation effect is good. And the vibration isolation effect is better than that of filling a vibration isolation trench.

The invention relates to a particle damping and electromagnetic suspension mixed vibration isolation test platform and a working method thereof. The platform is divided into an upper platform part and a lower platform part, the upper platform part comprises an upper supporting frame, an electromagnet and a suspension vibration sensor, the suspension vibration sensor monitors the suspension vibration condition of the upper platform part and collects signals, and the signals are transmitted to a suspension vibration controller and drive the electromagnet to generate response electromagnetic force for active vibration reduction; suspension vibration isolation is achieved; the platform lower portion comprises a lower supporting frame, a hollow groove, damping particles and a vibration sensor, the vibration sensor monitors the suspension vibration condition of the platform lower portion, the vibration controller calculates the rigidity and damping which should be achieved, the number of the damping particles is controlled to change the rigidity and damping of the platform lower portion, and particle damping vibration attenuation is achieved. Compared with the prior art, the full-band vibration energy attenuation and vibration isolation device has the advantages of achieving full-band vibration energy attenuation and vibration isolation, being good in vibration isolation effect, stable, high in integration degree, high in flexibility, high in practicability and the like.

The utility model relates to the technical field of building components, and discloses a metal shock insulation support with multiple shock insulation and adjustable fire prevention and shock absorption, which structurally comprises a connecting plate, embedded ribs, a shock insulation part and a shock absorption part, and has the beneficial effects that vertical vibration force borne by a building is subjected to multiple shock insulation through a vertical shock insulation cylinder and a rubber shock insulation cylinder; and meanwhile, by means of rotating displacement in the opposite directions between the connecting rods and the rotating rods, the buffering air bags are extruded to generate friction buffering energy consumption, transmission of energy from the lower portion to the upper portion can be reduced, deformation of a building structure can be reduced, and due to the fact that the energy consumption devices are distributed on the periphery of the vertical vibration isolation barrel, the stability of the vibration isolation part can be improved.

The present invention discloses a liftable rubber bearing with an air spring, belonging to the technical field of bridge shock absorption. It includes an upper pier and a lower pier arranged oppositely, and the upper pier and the lower pier are connected by support columns. The support columns include connecting cylinders, rubber bonding blocks and a number of air elastic columns. The connecting cylinder is provided with a number of uniformly distributed air elastic columns penetrating along its circumferential direction. The air elastic columns can extend or shorten along the axis direction of the support column, and the connecting cylinder is filled with the rubber bonding blocks. By arranging a number of air elastic columns that can expand and contract along the axis direction of the support column in the circumferential direction of the support column, using the elastic characteristics of the air elastic columns, as the vibration load of the rubber bearing increases, the bearing capacity of the rubber bearing increases, and the air elastic columns can suppress the vibration amplitude and avoid resonance. When the impact load increases, the stiffness also becomes larger, ensuring a good vibration isolation effect.

The invention relates to the technical field of water purification, and discloses a noise reduction method for water purification equipment and the water purification equipment, the air pressure in an air chamber can be automatically adjusted according to the working state of a booster pump, so that the inflation rigidity of an air bag body can be accurately adjusted according to the vibration characteristics of the booster pump in different working states, and the air bag body can absorb and disperse vibration energy more effectively; and vibration transmission and noise generation are reduced, it is ensured that the air bag body can always keep good vibration isolation performance under vibration of different frequencies, wide-frequency precise vibration isolation is achieved, the air bag body adapts to the complex vibration environment, the noise reduction effect is remarkably improved, and the user experience is improved.

The application discloses a heat treatment device and method for photovoltaic module recycling, and belongs to the field of photovoltaic module recycling, and comprises a heat treatment room, a vibrating platform, a lifting mechanism, a clamping mechanism and a fixing seat. The photovoltaic module can be placed on the fixing seat, the heat treatment room can heat the area where the fixing seat is located, and the heating temperature of the heat treatment room can make the EVA adhesive film become a solid jelly-like film. The adsorption mechanism can adsorb the glass layer or the back plate of the photovoltaic module and drive the glass layer or the back plate to move upwards. The EVA adhesive film in the photovoltaic module is adjusted to a solid jelly-like film by low temperature, the vibrating platform causes intense relative movement between the back plate and the battery plate and between the battery plate and the glass layer, thereby breaking the EVA adhesive film in the middle, and the glass layer, the battery plate and the back plate are disassembled. After disassembly, the high-pressure blowing mechanism is used to remove the EVA adhesive film remaining on the glass layer, the battery plate and the back plate. In the whole process, the EVA adhesive film is not dissolved and harmful gas is not generated.

The utility model discloses a rubber shock absorber. The rubber shock absorber comprises a mounting seat, a rubber shock absorption body and a metal piece, the rubber damping body is fixed on the mounting seat, and a plurality of mounting holes are formed in the mounting seat; and the metal piece is partially embedded into the rubber vibration reduction body along the central axis. By improving the structural design combination between the rubber part and the metal part, the vibration reduction structure which is convenient to install and good in vibration reduction effect is formed; the rubber shock absorber can effectively prevent metal parts from being rusted, has the advantages of low inherent frequency, moderate damping ratio and high transverse rigidity, is low in dynamic coefficient, good in vibration isolation effect, small in size, stable in performance and the like, and is particularly suitable for shock absorption installation of mechanical equipment such as fans, water pumps, engines and air compressors. The shock absorber has a remarkable shock absorption effect on equipment which is shocked and vibrated.

The utility model relates to the field of truck motor system vibration reduction, in particular to a truck motor suspension assembly which comprises an installation seat, a vulcanization body located in the installation seat and a limiting plate connected to the installation seat and the vulcanization body. Accommodating grooves are formed in the mounting seat, the outer side ends of the rubber bodies are accommodated in the accommodating grooves, limiting tables are arranged between the adjacent accommodating grooves in the mounting seat, deformation gaps exist between the limiting tables and the rubber bodies in a normal state, press-fitting plates located in the accommodating grooves are arranged in the rubber bodies, and inner convex parts and inner concave parts are arranged on the press-fitting plates and the mandrel in the Y direction correspondingly; the inner convex part and the inner concave part are matched to bear force, a fastener is arranged at the corner of the limiting plate, the limiting plate is connected with the mounting seat and the frame through the fastener, and the limiting plate is tightly pressed at the outer end of the press-fitting plate. According to the scheme, the motor suspension assembly is large in rigidity in the Y direction, large in rigidity in other directions and good in limiting capacity, the vibration isolation and reduction performance can be improved, the manufacturing cost is reduced, and the fatigue life is prolonged.

The present application relates to the technical field of vibration reduction devices, and discloses a periodic yield buckling bar vibration reduction device, including: an upper bearing plate and a lower bearing plate, both of which are used to connect to an external structure; at least two groups of vibration reduction devices, which are arranged between the upper bearing plate and the lower bearing plate, each group of vibration reduction devices is divided into two units, each unit includes a flexible eccentric portion arranged in a transverse U shape and two rigid yield buckling bars, the two yield buckling bars are respectively installed on both sides of the flexible eccentric portion, and the two yield buckling bars are movably connected at their distal ends to the adjacent sides of the upper bearing plate and the lower bearing plate. By arranging a combined structure of a flexible eccentric portion and a yield buckling bar between the upper bearing plate and the lower bearing plate, it is possible to achieve energy dissipation under the action of vibration loads through the deformation of the flexible eccentric portion and the buckling instability of the yield buckling bar, effectively suppress vibration, and improve the stability of the structure.

The application discloses a quasi-zero stiffness vibration isolation and pointing integrated platform, which comprises a base platform, a working platform and a plurality of leg mechanisms with quasi-zero stiffness characteristics arranged between the base platform and the working platform, one end of the leg mechanism is connected with the base platform through a two-axis flexible hinge, and the other end of the leg mechanism is connected with the working platform through a three-axis flexible hinge, so that spatial six-degree-of-freedom wide-band vibration isolation and pointing control are realized. The application utilizes linear and nonlinear positive stiffness structures to compensate for negative stiffness structure design, designs passive quasi-zero stiffness structures and active quasi-zero stiffness structures, composites the passive quasi-zero stiffness structures and the active quasi-zero stiffness structures to form quasi-zero stiffness legs, the quasi-zero stiffness legs can bear large loads, the ideal balance position adjustment of the passive quasi-zero stiffness structures can be realized by translating the negative stiffness structures of the passive quasi-zero stiffness structures, the ideal balance position adjustment of the active quasi-zero stiffness structures can be realized by translating the nonlinear positive stiffness structures of the active quasi-zero stiffness structures and adjusting the current size, so that the leg length is adjustable, and the quasi-zero stiffness legs have the pointing function.

The utility model relates to the technical field of automobile shock absorber damping valve structures, and discloses an automobile shock absorber damping valve structure convenient to install, which comprises a first support connector, a fixed upper support is fixedly installed at the top of the first support connector close to the center, and a damping valve upper shell is fixedly installed at the bottom of the first support connector. An upper shell groove is formed in the damping valve upper shell, a damping valve lower shell is movably connected to the position, close to the interior of the upper shell groove, of the interior of the upper shell groove, a second supporting connector is fixedly installed at the bottom of the damping valve lower shell, and telescopic damping supporting columns are movably connected to the positions, close to one side, of the front face of a second supporting connecting plate in an axial symmetry mode; limiting resisting columns are fixedly installed on the portions, close to the tops, of the front faces of the telescopic shock absorption supporting columns, and by arranging the telescopic shock absorption supporting columns, equipment can be fixed, parts can conveniently support the equipment, stable shock absorption is achieved, equipment driving is facilitated, and the shock absorption effect is conveniently achieved.

The vibration isolator is installed between a carrier and a sensor and comprises an upper metal piece, a lower metal piece and an installation base which are sequentially connected from top to bottom, the top of the upper metal piece is connected with a screw, the screw is connected with the sensor, and a rubber element is arranged between the lower metal piece and the installation base. Compared with the prior art, through the metal-rubber-metal sandwich structure in the longitudinal direction and the rubber-metal-rubber sandwich structure in the transverse direction, the bearing capacity of the vibration isolator in the longitudinal direction and the transverse direction can be improved on the basis that good vibration isolation performance is guaranteed; the transverse swing of the vibration isolator under the dynamic load of the vehicle and the deformation of the vibration isolator under transverse and longitudinal impact excitation generated when the vehicle is started and stopped are reduced, and the service life of the vibration isolator is prolonged. In addition, the vibration isolator is simple in structure, the upper metal piece and the lower metal piece are detachable, and installation and replacement are convenient.

The invention discloses a vibration isolator based on a metamaterial with adjustable rigidity and Poisson's ratio. The vibration isolator is formed by arranging a plurality of metamaterial structure units with adjustable rigidity and Poisson's ratio in an array. The metamaterial structure unit with adjustable rigidity and Poisson's ratio is composed of a positive Poisson's ratio unit (1), a negative Poisson's ratio unit (2), a first bilateral supporting unit (3), a second bilateral supporting unit (4), a first electromagnet (5) and a second electromagnet (6). The difference between the positive Poisson's ratio units (1) and the negative Poisson's ratio units (2) is that upper and lower support arms on the same side are arranged in a convex or concave manner. The first double-side supporting unit (3) and the second double-side supporting unit (4) are the same in structure, and the installation positions of the first double-side supporting unit (3) and the second double-side supporting unit (4) in the adjustable rigidity and Poisson ratio metamaterial structure unit are the same. When the vibration isolator is in a full-locking state, the structural rigidity is the highest, and when the vibration isolator is in a full-free state, the structural rigidity is the lowest. And the structural rigidity is similar in a positive or negative poisson ratio state. Therefore, the ratio of the units in the locked state in the vibration isolator determines the structural rigidity characteristic of the vibration isolator.

The present invention proposes a time-delay optimal control design method for a split vibration isolation system, the method comprising the following steps: establishing a dynamic model of the split vibration isolation system in the present invention, deriving the state space equation of the split vibration isolation system; introducing time lag into the state equation, updating the state equation of the split vibration isolation system; allocating weight matrices Q, R according to the objective function of the optimal quadratic algorithm and the control target of the vibration isolation system; deriving the control force model of the time-delay optimal controller according to the weight matrix Q, R and in combination with the state space equation of the split vibration isolation system, substituting the control force into the control loop to obtain a complete time-delay optimal controller, and optimizing the value of the active time lag to obtain a better control effect. Thus, the active control performance of the super-split vibration isolation system is improved, the method is low-cost, simple and easy to use, and effectively improves the vibration isolation performance of the split vibration isolation system.

The invention discloses a modularized ultralow-frequency vibration isolation device with a load self-adaption characteristic, which belongs to the field of vibration absorbers, and adopts a highly modularized structural design, vibration isolation modules are axially mounted between a load supporting platform and a base at equal intervals, and the vibration isolation modules are connected with one another through standard interfaces arranged at the center of the base. A vertical preload adjusting device and a horizontal preload adjusting device are designed in each vibration isolation unit. The effective load of the whole vibration isolation system is dynamically adjusted by adjusting the vertical preload device, so that the vibration isolation device can provide the optimal vibration isolation effect under different load conditions; by adjusting the preloading distance of the horizontal preloading device, the vibration isolation device can present the constant zero stiffness characteristic at any position. Therefore, the whole vibration isolation device shows different rigidity attributes such as high static and low dynamic rigidity, quasi-zero rigidity and constant zero rigidity, can adapt to wider working environments and vibration conditions, is simple to operate, and provides great convenience and flexibility for users.

The present invention provides a polymer composite floating plate track bed vibration isolator capable of achieving multi-directional vibration isolation effect, comprising a connecting device, a pressure bearing device and a vibration isolation device, wherein the connecting device comprises a foundation sleeve, a ball stud, a hanging bolt and a bottom plate connecting bolt, wherein the foundation sleeve is pre-buried in the floating plate and connected to the ball stud by threaded cooperation, the end of the ball stud is hemispherical, the pressure bearing device comprises an upper cover plate, a pressure bearing plate and a bottom plate, wherein the pressure bearing plate and the bottom plate are connected to the vibration isolation device, a rubber coating is arranged inside the upper cover plate, the upper surface is connected to the floating plate, and power is transmitted to the pressure bearing plate through the ball stud, a spherical groove is provided in the middle of the pressure bearing plate, which cooperates with the spherical surface of the ball stud, the vibration isolation device comprises a retaining frame and an elastic matrix, the middle part of the retaining frame is opened, and the elastic matrix penetrates into the hole of the retaining frame. The present invention develops a polymer composite floating slab roadbed vibration isolator which can achieve multi-directional vibration isolation effect, which not only has obvious vibration isolation effect on the vertical load generated during train operation, but also has good vibration isolation effect on the lateral and longitudinal loads generated during train operation.

The invention discloses a nonlinear vibration isolator with an electromagnetic damping and crank rocker mechanism. The nonlinear vibration isolator comprises a crank rocker, a base, a base rear cover, a first magnetic material and a second magnetic material, the first magnetic material and the second magnetic material are fixedly arranged on the base, connected with the base in a sleeved mode and embedded in a cavity, containing the rotor, of the base, and the base is screwed with the base rear cover. According to the vibration isolator, the non-linear form of rigidity and damping can be selected according to the working load, and electromagnetic damping has no frictional resistance, so that the vibration isolator has more excellent reliability and applicability.

The invention discloses a fully-closed low-noise servo motor pump energy device, and relates to the field of ship equipment, the fully-closed low-noise servo motor pump energy device comprises a target motor pump, the outer side of the target motor pump is sleeved with a fully-closed sound-proof cover, the sound-proof cover comprises a sound-proof cover left end cover, a sound-proof cover middle section and a sound-proof cover right end cover, and the target motor pump is installed on the sound-proof cover middle section; the sound-proof cover left end cover and the sound-proof cover right end cover are connected to the two ends of the sound-proof cover middle section correspondingly. The sound-proof cover left end cover and the sound-proof cover right end cover are each provided with a hydraulic connector, the target motor pump is connected with two hydraulic hoses, and the other ends of the hydraulic hoses are connected to the hydraulic connectors. The problems of vibration reduction and noise reduction of motor pumps for closed hydraulic systems such as existing electro-static pressure systems are solved.

The utility model relates to a combined type power assembly suspension assembly which comprises a suspension shock pad arranged on a vehicle frame and an engine support arranged on an engine, the suspension shock pad is provided with a conical concave hole, the engine support is provided with a conical boss, and the suspension shock pad and the engine support are positioned through the conical concave hole and the conical boss and are connected through assembly bolts. The suspension shock pad and the engine support are positioned through the conical concave hole and the conical boss, the problem that when the suspension shock pad and the engine support are assembled, assembly is difficult due to the fact that installation holes are difficult to align is solved, lapping is more convenient, and assembly is more accurate. And meanwhile, the problem that the vibration isolation performance of the suspension shock pad is reduced due to assembly stress in the suspension shock pad caused by assembly deviation is solved.

The invention discloses an electromagnetic damping nonlinear vibration isolator with a double-coil structure. The electromagnetic damping nonlinear vibration isolator comprises a rigid structure and a damping structure which are matched with each other, the damping structure comprises a top cover, a first left limiting part, a first right limiting part, a first magnetic material, a first coil, a second right limiting part, a base, a second coil, a second left limiting part, a second magnetic material, a base connecting shaft and a part connecting shaft. The first left limiting component, the second left limiting component, the first right limiting component and the second right limiting component are arranged on the base. The nonlinear electromagnetic vibration isolator has the characteristics of damping nonlinearity, adjustable damping, function conversion and the like, and the reliability problem of a common nonlinear vibration isolator under the working condition of low-frequency large-amplitude vibration is solved through the damping end, so that the vibration isolator shows a better vibration isolation effect under the working condition of low frequency.

The utility model discloses a limit vibration isolation device of an optical device, which comprises an upper fixed disc, and further comprises a vibration isolation inflatable rubber ring, a lower fixed disc and a limit lock, the upper fixed disc is positioned above the lower fixed disc, the vibration isolation inflatable rubber ring is clamped between the upper fixed disc and the lower fixed disc, the limit lock comprises a longitudinal piece and a transverse piece, and the longitudinal piece and the transverse piece are arranged in parallel. The side portion of the lower fixing disc is fixed to the bottom of the longitudinal piece, a transverse limiting piece is arranged in the middle of the longitudinal piece, and the edge of the upper fixing disc is located between the transverse piece and the transverse limiting piece. The vibration isolator is simple and compact in overall structure and good in vibration isolation effect; by arranging the limiting lock, the horizontal displacement and the longitudinal displacement of the upper fixing disc relative to the lower fixing disc can be effectively limited; and a single or multiple vibration isolators can be used at the same time to meet different vibration isolation requirements.

The application provides a suspension type vibration isolation system, belonging to the technical field of transportation vibration isolation, comprising: an outer frame connected with an inner frame through a plurality of vibration isolation mechanisms arranged in a cable-stayed manner; the vibration isolation mechanism comprises: an inertial container, the inside of the inertial container is provided with a series connection of an inertial mass structure and a damper, and the outside of the inertial container is connected in parallel with an elastic device; the suspension type vibration isolation system of the application adopts the parallel combination of the elastic device and the inertial container, the damper is added to the inside of the inertial container, wherein the elastic device is responsible for bearing, the inertial mass structure is responsible for generating inertial force, and the damper is responsible for generating damping force, so that the bearing problem is solved and the damping force is increased. The inertial mass structure is a new type of mechanical element, has the advantages of "high frequency resistance and low frequency", "small mass and large inertia", and the like. Due to the advantages of the inertial mass structure, the inertial mass structure has a wide application prospect in the field of vibration isolation and can well improve the vibration isolation effect of the vibration isolation system on low frequency vibration.

The present invention relates to the field of vibration and noise control technology, and discloses a three-dimensional vibration isolation device for rail transit, including an upper connecting plate, a vertical vibration isolation unit, a middle plate, a horizontal vibration isolation unit and a lower connecting plate arranged in sequence from top to bottom; wherein the vertical vibration isolation unit includes a box body and a first rubber layer, a spacer plate and a second rubber layer fixedly connected in sequence from top to bottom in the box body, one end of the box body is open, the upper connecting plate covers and is fixed on the opening, a plurality of vibration isolation springs are fixedly arranged on the first rubber layer and the second rubber layer, and a plurality of vibration isolation springs are coaxially arranged on the first rubber layer or the second rubber layer. The present invention can effectively reduce micro-vibrations induced by rail transit, effectively solve the vibration and noise problems of the upper cover structure of rail transit, and can have good vibration isolation effects on various types of vibration sources, as well as horizontal and vertical multi-dimensional vibration inputs.