Stepless adjusting quasi-zero stiffness central suspension device

Abstract

The invention relates to the technical field of railway vehicles and discloses a stepless adjusting quasi-zero stiffness central suspension device. The stepless adjusting quasi-zero stiffness centralsuspension device comprises a bogie and a fixing plate; a supporting plate is slidingly connected to the internal wall of the bogie; moving grooves matched with the two ends of the supporting plate are formed in the internal wall of the bogie; two symmetrically distributed slide grooves are fixedly formed in the upper surface of the supporting plate; slide blocks are slidingly connected to the internal walls of the two slide grooves; first arc plates are mutually and fixedly connected to the upper surfaces of the two slide blocks; and second arc plates are fixedly connected to the lower surfaces of the first arc plates. According to the stepless adjusting quasi-zero stiffness central suspension device, through two-stage shock absorption, the shock absorbing effect of the stepless adjustingquasi-zero stiffness central suspension device can be effectively improved, the vehicle body taking comfort can be improved, overload working of the stepless adjusting quasi-zero stiffness central suspension device can be effectively avoided, the service life of the stepless adjusting quasi-zero stiffness central suspension device can be prolonged, the buffering spring changing process of the stepless adjusting quasi-zero stiffness central suspension device is simple, convenient and fast, time and labor are saved, and the maintenance efficiency of the stepless adjusting quasi-zero stiffness central suspension device is enhanced.

Description

technical field [0001] The invention relates to the technical field of railway vehicles, in particular to a central suspension device for stepless adjustment of quasi-zero stiffness. Background technique [0002] The central suspension device of the railway vehicle bogie is installed between the car body and the bogie, which mainly plays the role of vibration reduction and vibration isolation, and improves the comfort of the vehicle. At present, the central suspension device of the railway vehicle bogie generally adopts steel springs, air springs or rubber springs. . [0003] Existing central suspension devices generally adopt shock absorbing springs for shock absorption, and the direct shock absorption of the shock absorbing springs results in poor shock absorption effect, which affects the comfort of the car body. If the damage is large, it is easy to reduce the service life of the central suspension device. Contents of the invention [0004] The purpose of the present...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the central suspension device in the prior art uses a shock absorbing spring to directly damp the shock, which leads to poor shock absorption effect, affects the comfort of the vehicle body, and the central suspension device is overloaded, which easily reduces the use of the central suspension device. In order to solve the problem of life reduction, a kind of stepless adjustment quasi-zero stiffness central suspension device is proposed

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