A device for automatically implementing height compensation when the air spring rubber airbag is depressurized

The hydraulic support unit and automatic filling mechanism automatically compensate for the air spring height when the rubber airbag is depressurized, solving the problem of carriage imbalance caused by rubber airbag leakage, ensuring the normal operation of the train and convenient transfer for passengers.

CN115388128BActive Publication Date: 2025-10-03ZHUZHOU TIMES NEW MATERIAL TECHNOLOGY CO LTD +1
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Patent Information

Application Number
CN202211095429.4
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-09-08
Publication Date
2025-10-03
Estimated Expiration
2042-09-08

AI Technical Summary

Technical Problem

The sudden leakage and decompression of the rubber airbag caused the upper cover of the air spring to sink, and the carriage lost its vertical balance, affecting the train's running speed and passenger transfers. Existing technology cannot quickly compensate for the height, resulting in train deceleration and inconvenience to passengers.

Method used

It adopts a hydraulic support unit and an automatic liquid filling mechanism. When the rubber airbag is depressurized, liquid is automatically filled into the hydraulic space through the liquid filling channel, causing the auxiliary spring to rise and restore the vertical balance of the car.

Benefits of technology

The air spring height can be quickly compensated, allowing the train to maintain a near-normal speed within a limited travel distance and select suitable stations for stopping, thus reducing passenger waiting time and avoiding a significant impact on the line's operating speed.

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Abstract

The present invention discloses a device for automatically compensating for height when the rubber bladder of an air spring releases pressure. The device comprises a hydraulic support unit and an automatic liquid-filling mechanism. The hydraulic support unit is positioned between the base of the air spring and the auxiliary spring, and comprises a height-adjustable hydraulic space containing liquid capable of supporting the auxiliary spring. A liquid-filling channel is provided between the automatic liquid-filling mechanism and the hydraulic support unit. When the rubber bladder of the air spring releases pressure, the automatic liquid-filling mechanism can fill the hydraulic space with liquid through the channel, causing the auxiliary spring to rise. Advantageously, if the rubber bladder suddenly bursts and releases pressure, the device can promptly compensate for the height of the sunken spring, allowing the train to travel at a speed close to normal operating speed. The device can also be used to stop for maintenance at major stations convenient for passenger transfers, minimizing travel delays for passengers.
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