6results about How to "Improve the vibration isolation effect" patented technology

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 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 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.

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.