17results about How to "Improve the vibration isolation effect" patented technology

The utility model relates to a vehicle-mounted ceiling screen support assembly formed by punching a galvanized steel sheet, which comprises a fixed support, an overturning component, a supporting component and a spring bolt component, the fixed support is made of the galvanized steel sheet formed by punching, a reinforcing structure is formed on the surface of the fixed support, and a screw hole is formed on the surface of the fixed support; the overturning assembly and the supporting assembly are symmetrically arranged on the two opposite sides of the screen. A side opening clamping structure is arranged on a shell of the overturning assembly and a shell of the supporting assembly, a vibration isolation sleeve is embedded in the clamping structure, a center through hole is formed in the vibration isolation sleeve, the vibration isolation sleeve is fixed to the screw hole through a step screw, and the outer diameter of the step face of the step screw is in interference fit with the inner diameter of the center through hole of the vibration isolation sleeve. According to the vehicle-mounted ceiling screen support assembly formed by stamping the galvanized steel sheet, the galvanized steel sheet formed by stamping is adopted as a core structure, all the components are optimally designed, and the effects that cost is reduced, structural strength is improved, vibration isolation and assembly are simplified, and installation adaptability is enhanced are achieved.

This application discloses a method for calculating the vibration isolation of ship vibration isolation devices based on isolator type spectrum data, relating to the field of ship vibration isolation design. The method includes: acquiring the type spectrum data and impedance test data of the target isolator; determining the stiffness and damping parameters of the target isolator based on the type spectrum data and impedance test data; constructing a finite element model of the ship vibration isolation device; inputting the stiffness and damping parameters of the target isolator into the finite element model for calculation, and obtaining the vibration isolation calculation results of the target isolator. This method can efficiently utilize isolator type spectrum data to conduct vibration isolation calculation and evaluation of ship vibration isolation devices during the ship design phase, avoiding resonance between the natural frequency of the vibration isolation device and the excitation frequency of the equipment, and improving the vibration isolation effect.

This invention discloses a hydraulic motor mount device for electric vehicles, relating to the field of hydraulic mount technology. It aims to solve the technical problem that traditional hydraulic mounts cannot adaptively match the complex vibration conditions of electric vehicles. The device includes a mount housing, a vibration isolation assembly, a damping assembly, a base diaphragm, and a vertical shaft assembly. The damping assembly includes an outer ring fixed to the middle of the mount housing. A ring body is movably disposed within the outer ring. A threaded half-groove A is formed on the inner surface of the outer ring, and a threaded half-groove B is formed on the outer surface of the ring body. Threaded half-groove A and threaded half-groove B form a damping flow channel. This invention, by designing a structure comprising a relatively movable outer ring and a ring body, with mating threaded half-groove A and threaded half-groove B on their opposing surfaces to form a damping flow channel, allows the geometry of the damping flow channel to adaptively change simply by moving the ring body along the threaded path. This solves the technical problem that traditional hydraulic mounts, due to their fixed damping channels, cannot adaptively optimize broadband vibration isolation performance.

This application relates to the field of vehicle chassis and provides a suspension structure and a vehicle. The suspension structure of this application includes an outer tube, an inner core disposed within the outer tube, and an elastic body disposed between the outer tube and the inner core. The elastic body has a first portion wrapped around the inner core and a second portion connected to the first portion. The second portion is disposed at the end of the inner core connected to the powertrain bracket, and when the inner core is connected to the powertrain bracket, the second portion can abut against the powertrain bracket. The suspension structure of this application can increase the friction between the elastic body and the powertrain bracket, and also increase the friction between the powertrain bracket and the inner core during the connection process, preventing the inner core from shifting. This effectively avoids torsional deformation of the elastic body, thereby improving the reliability of the elastic body and the overall suspension structure.

This invention relates to the field of vibration isolation device technology, specifically to a parallel vibration isolation device based on a cosine-shaped curved beam with positive and negative stiffness, comprising: a laminated rubber bearing, including an upper connecting plate and a lower connecting plate, with a rubber layer and a steel plate layer between the upper and lower connecting plates, and located at the center of the upper and lower connecting plates; a fixing structure, disposed on the upper and lower connecting plates and arranged in parallel on the outer periphery of the rubber layer and the steel plate layer; a laminated cosine curved beam, having multiple pieces, disposed on the fixing structure, with a joint on the laminated cosine curved beam, the joint being connected to the upper connecting plate; and a limiting post, disposed on the lower connecting plate, the limiting post being located at the bottom of the laminated cosine curved beam. This parallel vibration isolation device based on a cosine-shaped curved beam has a simple structure, and by arranging the laminated cosine curved beam in parallel on the outer periphery of the laminated rubber bearing, it improves the vertical vibration isolation capability without affecting the horizontal vibration isolation performance.

The application provides a nano-bubble-based capsule vibration isolation system, and belongs to the field of vibration isolation devices.The nano-bubble-based capsule vibration isolation system comprises a vibration isolation capsule, the inside of the vibration isolation capsule is filled with buffer liquid and solid particles, at least part of the surfaces of the solid particles are attached with nano-bubbles, and bubble-attached particles are formed; wherein the bubble-attached particles are configured to collide under the action of elastic waves of a vibration source, so that the nano-bubbles on the surfaces of the bubble-attached particles are broken, the bubble-attached particles generate internal energy based on the friction of the collision and the breaking of the bubbles to increase the energy dissipation of the elastic waves, so as to perform vibration isolation treatment on the elastic waves of the vibration source; and a preparation device is configured to prepare nano-bubbles based on a target generation rate under the control of a far-infrared control signal, and input the nano-bubbles into the inside of the vibration isolation capsule through the lower surface of the vibration isolation capsule, so as to change the concentration of the bubble-attached particles in the inside of the vibration isolation capsule.

The application provides a capsule vibration isolation system based on electromagnetic induction, and belongs to the field of vibration isolation devices.The system comprises a vibration isolation capsule, a plurality of electromagnetic induction units, a first electromagnet, a second electromagnet, an induction coil and a conductor block.The plurality of electromagnetic induction units are arranged in an array structure inside the vibration isolation capsule.The first electromagnet and the second electromagnet are configured to generate a magnetic field inside the electromagnetic induction unit.The conductor block is configured to move under the action of an elastic wave of a vibration source to change the magnetic field distribution of the magnetic field.The induction coil is configured to generate an induced current based on the change in the magnetic field distribution, so that the kinetic energy of the elastic wave is converted into the electric energy of the induction coil to dissipate the energy of the elastic wave.The plurality of electromagnetic induction units comprise a first electromagnetic induction unit and a second electromagnetic induction unit.The first electromagnetic induction unit is configured to dissipate the energy of a transverse wave component of the elastic wave, and the second electromagnetic induction unit is configured to dissipate the energy of a longitudinal wave component of the elastic wave.

The utility model relates to record player equipment technical field especially relates to a new record player that can improve tone quality, include: record player main part shell, the bottom of record player main part shell is provided with the shock -proof subassembly. The utility model discloses is provided with the shock -proof subassembly, and the installation cylinder provides protection and spacing for shock -proof subassembly, and the connecting plate and lower connecting plate are connected with the installation cylinder through shock -proof support foot no.

The application discloses a stiffness and damping adjustable vibration isolator and relates to the technical field of vibration isolation devices.The vibration isolator comprises a load platform, a foundation platform, a damping device, a positive stiffness component and a negative stiffness component.The foundation platform is arranged below the load platform, the stiffness component and the damping device are arranged between the foundation platform and the load platform, two working ends of the damping device, the positive stiffness component and the negative stiffness component are respectively connected with the load platform and the foundation platform, the stiffness of the positive stiffness component and the negative stiffness component is adjustable, the damping device can change the damping by changing the current size of the wire on the damping device, the vibration isolator can adjust the positive stiffness, the negative stiffness and the damping, and has a wide application range.

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 utility model discloses a temporary fixing device for a pump set and a pipeline foundation, and relates to the technical field of pipeline supporting, and the temporary fixing device comprises a plurality of supporting brackets which are adjacently arranged; the adjacent supporting brackets are detachably fixed through the connecting assemblies; the pipeline supports are arranged at the top of the supporting support, the multiple sets of pipeline supports are arranged, each set of pipeline supports comprises two pipeline supports, and the two pipeline supports in the same set are arranged on the two sides of a pipeline connector; the pipeline support comprises a supporting seat and a supporting pad, the supporting seat is arranged at the top of the supporting support, the supporting pad is arranged at the top of the supporting seat, and a supporting part for placing a pipeline is arranged on the supporting pad. The noise intensity can be reduced.

This utility model relates to the field of civil engineering technology, specifically to an anti-overturning vibration isolation building. The utility model includes a vibration isolation building body supported on a foundation by elastic vibration isolation devices, and also includes an external support structure and an anti-overturning structure. The external support structure includes soil and rock around the vibration isolation building body, a retaining wall, or an external support structure fixedly connected to the foundation. The anti-overturning structure includes at least two layers of horizontal elastic support groups arranged vertically between the vibration isolation building body and the external support structure. Each horizontal elastic support group includes multiple horizontally spaced elastic support devices. This utility model can significantly improve the safety and reliability of the vibration isolation building body during earthquakes, has excellent vibration and seismic control performance, and features a simple structure, good economy, high cost-effectiveness, and high safety and reliability. It can be widely applied in various vibration isolation building projects with external support structures.

The utility model provides vibrating equipment for building construction. The vibrating equipment comprises a motor, a flexible shaft, a vibrating rod and an auxiliary control device. The auxiliary control device comprises a flexible vibration isolation pad, a clamping sleeve piece, an operation rod and a positioning clamping sleeve, the clamping sleeve piece is formed by splicing two clamping sleeve units and is detachably connected with the operation rod through an inserting base, the two positioning units of the positioning clamping sleeve are matched in a magnetic attraction mode to form a clamping sleeve groove where the flexible shaft is embedded, and vibration is isolated through the flexible vibration isolation pad. According to the equipment, through the auxiliary control device which is rigidly connected, the insertion angle of the vibrating rod is conveniently and accurately adjusted, meanwhile, a flexible vibration isolation pad is used for preventing a hand from being damaged by vibration, stable control over the vibrating rod is achieved, and the construction efficiency and the concrete vibrating quality are effectively improved.

The application belongs to the technical field of active vibration isolation, and specifically discloses an active vibration isolation method and system based on prediction and adaptive control. The method comprises the following steps: performing multi-degree-of-freedom dynamic modeling on a vibration isolation system, taking the pose of a load as the system output, taking the control quantity of an actuator as the system input, and uniformly representing unknown dynamics caused by structural nonlinearity and disturbance as a nonlinear term; constructing an adaptive neural network state observer based on the dynamic model to estimate states that cannot be directly measured; collecting historical operation data of the vibration isolation system, constructing input time series and output time series after preprocessing the data, training a long short-term memory neural network prediction model, and generating a prediction signal representing future position information; designing an adaptive control law according to the state estimation result and the prediction signal, obtaining a feedback control quantity, superimposing the feedback control quantity with a feedforward control quantity obtained based on the prediction signal, and forming a control instruction for driving the actuator.

The invention discloses a multistage coupling air chamber type self-adaptive pneumatic vibration isolation device and a control method thereof.The device comprises a three-stage coupling air chamber structure, a main air chamber is used for bearing loads and providing basic air spring stiffness, and tuning air chambers change system equivalent stiffness through adjustable pressure; the micro air chamber group generates distributed viscous damping through flow channels among a plurality of micro air chambers; the sensing module is used for collecting a vibration time domain signal of the equipment platform and pressure data of the air chamber; the controller analyzes the vibration spectrum characteristics through the vibration time domain signal, and generates a control decision according to the pressure data of the main air chamber, the tuning air chamber and the micro air chamber group and a frequency domain divide-and-conquer strategy: if the vibration is low-frequency vibration, outputting a tuning air chamber pressure regulation instruction; if the vibration is high-frequency vibration, outputting a micro air chamber piezoelectric valve opening degree instruction; the execution module responds to the instruction, adjusts the pressure of the main air chamber, tunes the pressure of the air chamber or the communication state between the micro air chambers in the micro air chamber group, and achieves the dynamic matching of the rigidity and damping of the system.

The utility model belongs to the technical field of constructional engineering, and particularly relates to a light modular equipment base system. Comprising a plurality of equipment base units, and each equipment base unit comprises a concrete base, a vibration isolator, a steel structure column foot, first profile steel and second profile steel; the bottom of the vibration isolator is fixedly connected to the top of the concrete base; the bottoms of the steel structure column feet are fixedly connected to the tops of the vibration isolators, and the tops are used for installing equipment; the two transverse side walls of a stand column of the steel structure column foot are symmetrically connected with two pieces of first profile steel arranged in parallel correspondingly, and the two longitudinal side walls of the stand column of the steel structure column foot are symmetrically connected with two pieces of second profile steel arranged in parallel correspondingly. The equipment base units are at least connected with one adjacent equipment base unit through the first profile steel or the second profile steel, so that all the equipment base units form an integral frame. The fixing and vibration isolation mounting base is provided for equipment, meanwhile, the using amount of concrete is reduced, the overall weight is light, and the manufacturing cost is low.

This utility model provides a suspension device and an automobile. The suspension device includes: a top cover, a hollow shell with an opening on one side for connecting to a subframe, an inner core for connecting a motor, and a first elastic member and a second elastic member made of polyurethane material. The top cover has a first through hole and is fixed to the opening side of the shell. The first and second elastic members are located inside the shell and pressed between the inner bottom wall of the shell and the top cover. The first end of the inner core is located inside the shell, and its outer wall protrudes from the outer wall of the main body. The main body passes through the first through hole, and its second end is located outside the shell. The first elastic member is sleeved on the outer periphery of the main body and the first end, with one end abutting against the top cover and the other end abutting against the second elastic member and the first end. One end of the second elastic member abuts against the first end, and the other end abuts against the inner bottom wall of the shell. This device can isolate motor vibration from being transmitted to the subframe, providing vibration isolation, and achieving a wide range of stiffness adjustment and weight reduction.