5results about How to "Guaranteed vibration isolation performance" patented technology

The invention provides a permanent magnet composite multi-degree-of-freedom active electromagnetic vibration isolator and a vibration isolation system, and belongs to the field of vibration isolators, the vibration isolator comprises an electromagnetic assembly, a chassis assembly, a permanent magnet assembly and an end cover assembly, and the electromagnetic assembly comprises an iron core and a coil; the chassis assembly comprises a base, a bottom shell, a damping backing ring, a positioning column and a bearing spring, and the damping backing ring is arranged in a gap between the base and the bottom shell; the permanent magnet assembly comprises a permanent magnet, a magnetic conductive piece, a positioning frame and annular table pieces. The annular table piece located at the lowest position is connected with the bottom shell through a bearing spring. The end cover assembly comprises a top shell, an adjustable spring seat, an adjusting spring, a guide bolt and a guide nut. The active vibration isolation force is effectively adjusted through the control current of each coil in the electromagnetic assembly, and the active vibration isolation device has the characteristics of being high in response speed, stable in output and reliable in work, is suitable for a multi-degree-of-freedom vibration isolation system and can meet different vibration isolation requirements; and the equipment can be adjusted to the optimal vibration isolation performance without dismounting the vibration isolator.

The application provides an oil-gas suspension cylinder, an oil-gas suspension system and a vehicle, and belongs to the technical field of vehicles.The oil-gas suspension cylinder comprises a cylinder barrel which is a hollow cavity with openings at both ends, two piston rods with different cross-sectional areas are arranged at both ends of the cylinder barrel, a partition plate is arranged in the cylinder barrel, the partition plate divides the inside of the cylinder barrel into two independent first chambers, and the two piston rods are arranged in the two independent first chambers respectively; a second chamber and a fixed damper are arranged on the piston rod, and the fixed damper enables the second chamber to communicate with the first chamber. The double-piston rod with different cross-sectional areas is arranged, the large-diameter end is used as a heavy-load piston rod, and the small-diameter end is used as an empty-load piston rod; the empty-load piston rod can improve the pressure during empty-load operation due to the small cross-sectional area, so that the pressure is greater than the starting pressure of the suspension cylinder, the suspension cylinder is convenient to debug, and the problem that the diameter is too large due to the design according to the full-load load, resulting in extremely low empty-load pressure is solved.

The invention discloses a method for controlling vibration of equipment in a building. The method comprises the following steps: evaluating the type and quantity of power equipment in the building; determining a vibration evaluation standard according to the type and the number of the power equipment in the building, and determining whether the power equipment in the building is put into use or not; if the power equipment in the building is not put into use, a vibration isolation scheme is determined according to design data; if the power equipment in the building is put into use, carrying out a vibration test on an environment in which the power equipment in the building runs, if a test result does not meet a standard, testing a vibration source and vibration characteristics, and determining a vibration isolation transformation scheme according to the obtained vibration source and vibration characteristics; according to the design parameters of the vibration isolation scheme and the vibration isolation transformation scheme, a finite element model is established for dynamic response analysis, and a matched vibration isolation mode is selected; and according to the selected vibration isolation mode, a final vibration isolation construction scheme is determined. According to the method, design parameters can be optimized, the work amount can be reduced, and the actual vibration isolation effect is guaranteed.

The invention discloses a variable damping hydraulic torsion damper suitable for a hybrid power vehicle, and belongs to the technical field of mechanical vibration control. The shell is connected with a driving side, a spring mounting window and an oil duct are arranged on a driving disc cover, the hub is connected with a driven side, an internal spline is arranged on a central shaft of a driven disc hub, so that the central shaft is connected with a power output shaft, a spring mounting window and a limiting bump are arranged on the central shaft, and a closed annular cavity oil duct is formed between the disc cover and the disc hub. A floating damping ring is arranged between every two adjacent limiting protruding blocks, the cavity is filled with viscous fluid damping media, and a throttling valve of a one-way valve structure is arranged in the annular cavity to control throttling output. Damping springs are installed in windows of the disc cover and the disc hub, and spring guide rods are placed on the two sides of the damping springs to form a damping device. The disc cover and the disc hub are sealed through a framework oil seal. The invention particularly discloses a high-elasticity vibration damper with a spring-mass system and a separately arranged hydraulic vibration damping system.

The present invention discloses a heat-conducting vibration-isolating interface material, comprising a plurality of arrays of heat-conducting strips, wherein the interior of the heat-conducting strips comprises an inner core, the exterior of the inner core is covered with a backing adhesive layer, the exterior of the backing adhesive layer is bonded with a heat transfer layer, the exterior of the heat transfer layer is covered with an insulating layer, and the outer side of the heat-conducting strips is provided with a heat-conducting gasket, and the area of ​​the heat-conducting gasket is larger than the surface area of ​​a single heat-conducting strip. The device has the requirements of high vibration isolation rate, high temperature resistance, low thermal resistance, and mass production.