Liquid viscous damper with additionally arranged free micromotion device

Abstract

The invention relates to the field of dampers, in particular to a liquid viscous damper with an additionally arranged free micromotion device. The liquid viscous damper with the additionally arrangedfree micromotion device comprises a liquid viscous damping device and the free micromotion device. The liquid viscous damper with the additionally arranged free micromotion device has the beneficial effects that by additionally arranging the free micromotion device, disturbance on the liquid viscous damper generated by a brake load and a traffic load can be well avoided, and accumulated routes generated by the liquid viscous damper under the action of daily train braking and the traffic load are greatly reduced, so that abrasion losses of a damper sealing piece are greatly reduced, and compared with a general liquid viscous damper at present, the service life of the liquid viscous damper with the additionally arranged free micromotion device is long. By additionally arranging the free micromotion device, a moving stop block is used for abutting against an end head of one end of a fixed stop block or a sleeve in the back and forth motion process, a first cylinder body and a second cylinder body of the liquid viscous damper are driven to generate stretching or compressive deformation to consume seismic energy, and a buffer action of the whole damper relative to a seismic load can befurther enhanced.

Description

technical field [0001] The invention relates to the field of dampers, in particular to a liquid viscous damper equipped with a free fretting device. Background technique [0002] Viscous damper, as a structural protection system, is the most widely used and most successful vibration damping device at present. This is particularly evident in the field of bridge engineering. The application of viscous damper shock absorption technology has greatly improved the safety reserve of the bridge, improved the overall dynamic performance of the current long-span bridge, and can play a good role in the event of an earthquake. energy consumption. [0003] In recent years, with the popularization of the application of viscous dampers, their failure problems have gradually increased, and the most important fatal problem is the oil leakage of the dampers. For long-span bridges, there is no damper that is only used for shock resistance in a simple sense because it needs to withstand the l...

AI Technical Summary

Problems solved by technology

For long-span bridges, there is no damper that is only used for shock resistance in a simple sense because it needs to withstand the load of moving vehicles during its entire life. The damper is a high-pressure sealing component. Friction, the kinetic energy of the accumulated absorption structure is converted into the internal energy of the internal medium, which makes the accumulated temperature of the damper too high, which in turn acts on the seal, and the cumulative effect seriously affects the durability of the seal, that is, greatly reduces the service life of the damper

Once the damper leaks oil, there will be no medium for energy conversion, that is, the reciprocating compressed air flowing in an open environment is equivalent to no damping, and the damper will lose its proper function

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