21results about How to "Good vibration isolation" patented technology

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 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 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 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.

This utility model provides a support suspension device and a washing machine including the same. The support suspension device includes a first bracket, a second bracket, and an elastic support assembly. The elastic support assembly is made of elastic material and includes: a first vibration isolation support portion having a connected drum end, a vibration isolation support body, and a housing end along the height direction, the vibration isolation support body being supported between the drum end and the housing end; and a second vibration isolation support portion disposed on the drum end and extending from the drum end toward the housing end, the end of the second vibration isolation support portion toward the housing end being configured to move closer to or further away from the housing end relative to the weight of the drum, and to move relative to the housing end in the horizontal plane along the direction of approaching or moving away from the vibration isolation support body. This suspension support device can achieve better vibration isolation and damping effects, reduces the number of parts, has a more compact structure, significantly reduces the space occupied in the housing, and avoids structural noise generated by component operation.

This utility model discloses a noise-reducing screw sealing cover for a screw compressor, including a cover body composed of double-layer sound insulation panels. The cover body has several protective doors, each with a sealing strip along its edge. Sound insulation cotton is provided on the inner surface of the protective doors and between the two layers of sound insulation panels. The cover body is equipped with a floating base, which includes an outer frame and an inner support plate. The edge of the inner support plate is connected to the outer frame via several sets of elastic connectors. The four corners of the outer frame are connected and fixed to anchoring seats via traction ropes, keeping the floating base suspended. This utility model, by using a sealing cover composed of double-layer sound insulation panels and sound insulation cotton, effectively absorbs and isolates the airborne noise generated during screw compressor operation. The suspended floating base flexibly suspends the inner support plate carrying the screw compressor on the outer frame via elastic connectors, cutting off the path of vibration propagation along the ground, thereby suppressing the generation and transmission of structural noise.

The invention discloses an axial vibration isolation device of an underwater glider attitude adjusting motor based on an acoustic metamaterial, and belongs to the technical field of underwater equipment noise reduction, and the axial vibration isolation device comprises a vibration isolation piece made of an elastic damping material, and a periodic geometric structure is arranged on a body of the vibration isolation piece and is used for forming an elastic wave band gap for a vibration signal of a specific frequency band; the structural supporting piece is used for installing and supporting the vibration isolation piece; and the flexible transmission part is used for being connected with the transmission shaft and has a secondary vibration absorption function. The vibration isolation piece, the structure supporting piece and the flexible transmission piece are integrated, and efficient vibration isolation is achieved through the band gap characteristic of the vibration isolation piece and cooperative dissipation of the flexible transmission piece on vibration energy. The device is compact in structure, has the functions of torque bearing and vibration reduction, can effectively suppress vibration at the frequency band of 600Hz-1500Hz through parameterization design, has the maximum deformation not exceeding 0.5 mm, is suitable for the axial vibration isolation requirements of posture adjusting motors of underwater gliders of multiple models, and improves the signal acquisition precision of an acoustic sensor.

The utility model relates to the technical field of building floor slabs, and discloses a floor slab capable of absorbing shock and reducing noise, which comprises a wall body, a floor slab main body is arranged on the wall body, a suspended ceiling plate is arranged at the bottom of the floor slab main body, and a shock-absorbing and noise-reducing assembly is arranged between the floor slab main body and the suspended ceiling plate. According to the utility model, the shock absorption and noise reduction assembly is arranged between the floor main body and the ceiling plate, and the square supporting steel pipe in the shock absorption and noise reduction assembly is used for fixedly connecting the ceiling plate with the floor main body through the expansion bolt inserted on the square supporting steel pipe; the space between the floor slab body and the ceiling plate is filled with the first sound absorption heat preservation plate and the second sound absorption heat preservation plate, the first sound absorption heat preservation plate and the second sound absorption heat preservation plate are limited and fixed, and the good sound insulation and vibration isolation effects are achieved through the first sound absorption heat preservation plate and the second sound absorption heat preservation plate; therefore, the influence of sound generated by activities of upper-layer residents on life of lower-layer residents of the floor main body is effectively reduced.

The application provides an active vibration isolation system based on a phase conjugate elastic beam, which comprises a foundation base plate, a vibration isolation platform and four vibration isolation units arranged in a rectangular symmetry. Each vibration isolation unit comprises a lower connecting seat, a quasi-zero stiffness mechanism, a phase conjugate elastic beam assembly, an upper connecting seat, a piezoelectric-elastic fluid composite actuator and an analog controller. The quasi-zero stiffness mechanism adopts an air spring to provide positive stiffness and a permanent magnet and an electromagnet to provide real-time adjustable negative stiffness in an opposite pole state. The elastic beam is in a cosine curve shape, two ends of the elastic beam are connected with floating seats through flexible hinges, and strain gauges are pasted at symmetrical positions to realize time-lag-free speed prediction. In the piezoelectric-elastic fluid composite actuator, working liquid is continuously through, and high and low frequency control forces are naturally separated through fluid dynamics. The application keeps the phase flat in the full frequency band of 0.1Hz to 100Hz and can realize hybrid control without time lag.

Embodiments of the present application provide a control method, device, equipment, medium and product of a hydraulic mount. The method comprises: obtaining a parameter group affecting the stiffness of the hydraulic mount; inputting the parameter group affecting the stiffness of the hydraulic mount into a first curve model to obtain a first frequency response curve; performing multi-objective optimization on the parameter group according to the first frequency response curve and a second frequency response curve to obtain a multi-objective optimization result; the second frequency response curve is a curve output by a second curve model; the first curve model and the second curve model are both models obtained by performing multi-scale analysis on the parameter group; and adjusting a response parameter of the hydraulic mount according to the multi-objective optimization result. The method is used to improve the use effect of stiffness control adjustment.

The invention discloses a laser machining device for a surface microstructure of a thin-wall spherical shell type micro-component, and relates to the technical field of micro-component surface machining. The problem that due to the fact that traditional material removal modes such as ultra-precision cutting are incomplete in material removal and substandard in contour precision, the manufacturing requirement caused by the nanoscale precision of the surface microstructure of the thin-wall spherical shell micro-component cannot be met is solved, the device comprises an X / Y / Z / B / C axis movement unit, a Y axis, a B axis and a C axis are sequentially arranged on a horizontal base table board in a stacked mode, and a workpiece is installed on a C axis objective table; the X axis and the Z axis are mounted on a cross beam of the portal frame in an overlapping manner, the laser processing head is fixed on a Z-axis carriage, and the workpiece position change introduced by the swing of the B axis can be compensated through the X axis; according to the device, laser processing and in-situ detection of the surface microstructure of the thin-wall spherical shell micro-component are integrated, high-precision adjustment of a movement position, precise regulation and control of laser pulse energy and precise capturing and recognition of a feature point position can be achieved, and high-precision stable controllable removal of an incomplete part of a cutting processing material is met.

This invention discloses an additive manufacturing-based inertial amplification nonlinear low-frequency vibration isolation metamaterial structure, vibration isolation device, and its performance control method. The vibration isolation metamaterial structure includes a rhombic frame structure, an inertial amplification unit, and a square spring structure. The square spring structure is arranged within the rhombic frame structure, with its two ends connected to a pair of opposite corners of the rhombic frame structure. The elastic extension direction of the square spring structure is parallel to the diagonal of this pair of opposite corners of the rhombic frame structure. The inertial amplification unit has a centrally symmetrical structure, including a rigid rod, two counterweights, and two diagonal rods. The center of symmetry of the inertial amplification unit, the center of the rhombic frame structure, and the center of the square spring structure all coincide in projection. Therefore, the vibration isolation metamaterial structure of this invention significantly widens the bandgap range and enhances low-frequency vibration isolation performance, exhibiting excellent performance in suppressing longitudinal waves in the 0-1000Hz low-frequency range, increasing vibration damping, and energy absorption.

The invention discloses a honeycomb Bragg phononic crystal-based low-frequency vibration reduction structure and application thereof, and the structure comprises a plurality of honeycomb unit bodies which are periodically arranged in a space to form a three-dimensional phononic crystal structure; each honeycomb unit body is composed of a functional gradient composite material layer serving as a base body and a flexible coating layer serving as a reflecting layer, and through hole arrays are uniformly distributed on the honeycomb unit bodies; the honeycomb unit bodies have fixed geometric periodic constants, the low-frequency vibration reduction structure generates a plurality of low-frequency band gaps within the frequency band of 0-100 Hz through geometric coupling generated by the through hole array and wave impedance mismatch of a material interface based on a Bragg scattering mechanism, and suppression and dissipation of low-frequency elastic waves are achieved. The device has the advantages of being low in band gap starting frequency, high in attenuation capacity, good in structure designability, capable of bearing and flexible, and suitable for protection of bridges, rails, precision equipment and other scenes.

The utility model provides a kind of support suspension device and the washing machine comprising it, support suspension device includes first support, second support and elastic support component, elastic support component is made of elastic material, including: upper vibration isolation support part, the second end of connecting first support along circumferential direction;Lower vibration isolation support part, the second end of connecting second support;And left vibration isolation support part and right vibration isolation support part, all extend along up-down direction and are connected between upper vibration isolation support part and lower vibration isolation support part respectively.The left vibration isolation support part and right vibration isolation support part have bending part along extension direction.The lower vibration isolation support part is configured to be able to change with the gravity of cylinder, relative to upper vibration isolation support part in left-right direction close or away.This suspension support device can achieve better vibration isolation and damping effect, reduce the number of parts, structure is more compact, significantly reduce the occupation of box space, and avoid the structure noise generated by component operation.

The embodiment of the invention relates to a footing supporting structure and clothes treating equipment, the footing supporting structure comprises a positive stiffness element and a negative stiffness element, and the positive stiffness element is used for deforming under the action of external force to provide positive stiffness; the negative stiffness element is used for deforming in the direction opposite to the deformation direction of the positive stiffness element under the action of external force so as to generate negative stiffness for balancing the positive stiffness, so that the whole footing supporting structure can form a quasi-zero stiffness structure, namely, the footing supporting structure can achieve a good vibration isolation effect. And therefore, the heat pump system is not easy to resonate, so that the heat pump system has a relatively long service life. Meanwhile, at least one of the positive stiffness element and the negative stiffness element is arranged to be a metal piece or an alloy piece, so that the structure strength is high, and the bearing capacity of the whole bottom foot supporting structure can be effectively improved. In addition, a weight reduction structure arranged on the negative stiffness element can effectively achieve lightweight design.

The present disclosure relates to a vehicle body roll swing control method, a controller, a vehicle and a storage medium. The vehicle body roll swing control method comprises: obtaining an excitation frequency of a vehicle running road surface; determining a target preset frequency band corresponding to the excitation frequency, and a target preset corresponding relationship corresponding to the target preset frequency band, wherein the target preset corresponding relationship is a corresponding relationship between the excitation frequency of the road surface and the current of the shock absorber, different target preset frequency bands correspond to different target preset corresponding relationships; and adjusting the current of the shock absorber according to the excitation frequency and the target preset corresponding relationship to adjust the damping of the shock absorber. The technical solution provided by the present disclosure uses only the target preset corresponding relationship between the road surface excitation frequency and the current of the shock absorber to adjust the current of the shock absorber according to the road surface excitation frequency, realizes the control of the vehicle body swing and good vibration isolation performance, and the algorithm is simple and saves computing power.

The utility model relates to a suspension pull rod and a vehicle, and the suspension pull rod comprises a support used for being connected with a power assembly; the main spring frame comprises a vibration isolation piece, a first framework and a limiting elastic piece, the vibration isolation piece and the first framework are connected, and the limiting elastic piece is arranged in the first framework in a penetrating mode; the connecting piece sequentially penetrates through the vibration isolation piece, the limiting elastic piece and the support, the two ends of the connecting piece are fixedly connected with the vibration isolation piece and the support respectively, the limiting elastic piece is movably arranged on the connecting piece, and the ends of the limiting elastic piece are located on the two sides of the first framework in the X direction respectively and can make contact with the support or the vibration isolation piece. To provide stiffness to the vehicle in the X-direction. According to the suspension pull rod, the vibration isolation piece for providing the vibration isolation effect and the limiting elastic piece for providing rigidity for a vehicle are independently arranged, vibration isolation under small displacement and durability under the large-load working condition can be considered, the suspension pull rod can adapt to various complex working conditions, meanwhile, later independent maintenance and replacement can be facilitated, and the durability of the suspension pull rod is improved.

The present application relates to a foldable interactive photovoltaic and photo-thermal system for a travel trailer, belonging to the field of new energy technology. The present application comprises a crank rocker composite sliding guide rail folding system, a PVT photovoltaic and photo-thermal system, a vibration isolation and light tracking system; the crank rocker composite sliding guide rail folding system is used to realize the unfolding and folding of the photovoltaic panel; the PVT photovoltaic and photo-thermal system is used to convert solar energy into electric energy and heat energy; the hierarchical damping system of the vibration isolation and light tracking system is used to buffer the bumps and shocks during the driving of the trailer; the vibration isolation and light tracking system is used to adjust the pitch angle and rotation angle of the photovoltaic panel. The present application integrates photovoltaic power generation and photo-thermal recovery through PVT technology, combines with electric / thermal dual energy storage modules to realize energy complementation; designs a lightweight folding structure to expand the heat collection area while adapting to the roof space limitation; optimizes the environmental adaptability of the system to improve the stability in complex outdoor scenarios.

This invention relates to a low-energy-consumption hybrid vibration isolation method based on the ΔE effect of magnetostrictive materials. In hybrid vibration isolation, the ΔE effect of magnetostrictive materials is utilized, and a method based on the energy consumption function W is proposed. hybrid =W act +W bias =∫U act I act dt+U bias I bias and the energy function E = E act +E bias =f(A,I act )+g(A,I bias The low-energy-consumption hybrid vibration isolation decision function is minG=aW. hybrid +bE, based on the vibration source characteristics, dynamically adjusts the optimal stiffness operating point of the GMA, and on this basis, uses GMA for active vibration isolation, thereby achieving low-energy semi-active-active hybrid vibration isolation. Experimental tests have demonstrated that this invention has the advantages of low power consumption and good vibration isolation effect compared with traditional vibration isolation methods.

The application discloses a reliability optimization design method of a multi-link shock isolator under impact excitation, belongs to the technical field of mechanical equipment shock isolation and vibration reduction, and is used for reliability optimization design of a multi-link shock isolator, and comprises the following steps: a dynamic control equation of the multi-link shock isolator is established and solved; global sensitivity index of a dynamic behavior parameter is calculated based on a failure probability of vibration isolation performance, and a sensitivity parameter is extracted; a limit state function of the vibration isolation performance is established; a Kriging surrogate model of the failure probability function is established based on the limit state function; a normalized target function considering the failure probability of the vibration isolation performance is established with high-frequency vibration average transmissibility as a target function; and the normalized target function is solved by using a particle swarm algorithm. The application can reduce the vibration transmissibility of the vibration isolation device, improve the performance robustness of the vibration isolation device, and obtain design parameters of optimal vibration isolation performance by analyzing the multi-link shock isolator under impact excitation and considering constraint conditions of the performance reliability and the dynamic behavior of the vibration isolation device.

This utility model relates to the technical field of gearbox alloy bracket structures and discloses a gearbox alloy bracket structure with anti-vibration buffer connection. The structure includes an alloy bracket with a honeycomb-shaped buffer layer at its top. The honeycomb cells of the buffer layer are filled with high-damping rubber. First and second mounting holes are respectively provided at both ends of the alloy bracket, and a third mounting hole is provided in the middle. All three mounting holes pass through the honeycomb-shaped buffer layer. A stacked damping plate is provided at the bottom of the alloy bracket. This utility model, by using the honeycomb-shaped buffer layer and high-damping rubber, utilizes the inherent flexibility and damping of the honeycomb structure. The high-damping rubber further absorbs vibration energy and converts it into heat energy, significantly improving the damping characteristics of the bracket itself and reducing the outward radiation and transmission of vibration.