A rail vehicle primary suspension device

Abstract

The invention relates to a rail vehicle primary suspension device. The device comprises a framework, conical rubber springs and an air spring air chamber and is characterized in that a gas chamber isformed in a framework side beam, a capsule part is integrated in an inner cavity of each conical rubber spring, the upper end of each capsule part is mounted on a cover plate, and the lower end of each capsule part is mounted on a mandrel; the upper portion of each conical rubber spring is connected to a metal piece to serve as an interface for being connected with the gas chamber of the frameworkside beam, the gas chamber of the side beam is communicated with the air spring air chamber, O-shaped sealing rings are arranged outside the metal pieces, and throttle holes are formed in the inner centers. Compared with the prior art, the device has the advantages and progresses that the rubber springs on both sides can provide a same damping force, and there are no unbalance loading conditions;by arranging the capsule parts and forming the throttle holes in inner cavities of the springs, a damping force can be generated when the air passes through the throttle holes, vibration energy is consumed, and a damping effect is achieved; the structure is simple, the occupied space is small, and the requirement for primary displacement can be fully met; a pressure air structure is adopted for avoiding the situation that rubber is denatured because of leakage of a provided damping medium.

Description

technical field [0001] The invention relates to a primary suspension system of a rail vehicle, in particular to a primary suspension device with an integrated damping function. Background technique [0002] The existing urban rail vehicle bogie primary suspension system mainly has two forms of steel spring and conical rubber spring. In the swing arm steel spring primary suspension system, the steel spring is connected in parallel with the oil pressure shock absorber to achieve the purpose of vibration isolation and energy absorption. This structure can adjust the damping force by adjusting the parameters of the oil pressure shock absorber, but the parallel oil pressure The shock absorber and the steel spring are not on the same center, which will cause partial load, and the overall structure takes up a lot of space, which is not conducive to the layout of the bogie equipment. The traditional conical rubber spring primary suspension system achieves the purpose of vibration i...

AI Technical Summary

Problems solved by technology

However, the traditional conical rubber spring cannot provide damping force, and there is no energy-absorbing device similar to a shock absorber. Although it can effectively isolate the vibration generated by the wheel rail and achieve the effect of vibration isolation, it cannot absorb the energy generated by the vibration and effectively attenuate the vibration amplitude. , which is detrimental to the overall dynamic performance of the bogie

And the rubber material is easy to react with substances such as engine oil, resulting in structural failure

Images