Two-stage lossless train capture device for pneumatic damping reduction network train system

Abstract

The invention discloses a two-stage lossless train capture device for a pneumatic damping reduction network train system. The whole device comprises a test segment and a retarding capture segment, wherein the test segment is set distinctively according to different test contents; and the retarding capture segment consists of a retarding network, an aerodynamic damping system, a retarding guide rail system and a support steel frame system. The two-stage lossless train capture device is characterized in that in the test process, a model train running at a high speed runs into the retarding capture segment after passing through an earthquake simulation vibration table array test segment, initial energy consumption is performed through speed-reducing network deformation in the retarding capture segment, and the aerodynamic damping system is driven to perform primary energy consumption through a steel wire rope in order to realize short-distance rapid retarding two-stage lossless capture ofthe model train. The whole test device provides a safe and reliable train recycling scheme and technical guarantee for the on-bridge running text research of the high-seed train under the action of earthquake.

Description

technical field [0001] The invention relates to a train capturing device, in particular to a two-stage non-destructive train capturing device for a pneumatic damping deceleration network driving system. Background technique [0002] According to data on the official website of the National Railway Administration, by the end of 2017, my country's railway operating mileage had reached 127,000 kilometers, including 25,000 kilometers of high-speed rail, accounting for 66.3% of the world's total mileage of high-speed rail, ranking first in the world. China's achievements in high-speed rail construction have attracted the attention of the world, and now high-speed rail has become a resounding name card of China's great rejuvenation. However, the construction and operation of high-speed railways in my country are also facing many challenges and dangers, such as complex geology, changing climate, prominent durability and time-dependent behavior, and dynamic effects such as wind and ...

AI Technical Summary

Problems solved by technology

(1) How to efficiently and safely recover the test model vehicle in a short distance? Because the test model vehicle has the characteristics of large mass and high speed, the kinetic energy contained in it is extremely large. For example, the scale ratio of 1:10 is adopted, the similarity ratio of acceleration is selected as 1, and the similarity ratio of elastic modulus is selected as 0.5. The prototype vehicle adopts CRH380A. The calculated mass of the model vehicle is about 500kg, and the speed is about 20m / s. The conventional friction deceleration scheme needs a long enough track, but the laboratory is often limited in space, and there is not enough length to arrange the deceleration section, so it is necessary to design a short distance Efficient deceleration scheme

(2) How to recover test model trains non-destructively? Due to the small scale ratio of test model trains, high manufacturing precision is required, and model trains often need built-in various sensors, so the production of model trains is time-consuming and costly. If damage occurs during the test, it will not only cause unnecessary economic losses, At the same time, it will also delay the test process, and it will become a problem that must be solved to ensure that the well-made test model vehicles are not damaged.

At this time, if the track structure of the test section continues to the test section, there will be large deformation or even damage at the junction of the two, which is inconsistent with the actual process; if the track structure of the test section and the deceleration section is disconnected, the tracks on both sides of the junction will The alignment has become a big problem. Inaccurate alignment will cause the high-speed model train to jump or even overturn, which will cause the potential risk of damage to the model train. Therefore, it is necessary to design a new solution

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