Full-scale derailing principle test stand with steering frame operating on rails

Abstract

The invention relates to a full-scale derailing principle test stand with a steering frame operating on rails. Tractor guide rails are arranged outside railway rails and matched with wheels of a tractor, the steering frame is arranged in the tractor, and the front and the back of the steering frame are connected with the tractor through steel ropes; a drive device in front of the railway rails is connected with the front end of the tractor through steel ropes; cylinder rods of a front transverse electric cylinder and a back transverse electric cylinder at the left side of the tractor are respectively connected with a front axle casting and a back axle casing at the left side of the steering frame through respective transverse steel ropes; and cylinder rods of a left longitudinal electric cylinder and a right longitudinal electric cylinder at the front of the tractor are respectively connected with a framework of the steering frame through respective longitudinal cylinder rods. The test stand can freely regulate and change test parameters, can be used for researching extreme working conditions of derailing of the tractor, can really reflect the actual wheel and rail interaction characteristics, has the advantages of short test period and low cost, and has important significance on safety operation of high-speed and heavy haul railways and the like.

Description

technical field [0001] The invention relates to a bogie derailment mechanism test bench. Background technique [0002] With the high-speed passenger transport and heavy-duty freight of modern railway trains, the dynamics of railway wheel-rail systems have become more prominent, and derailment accidents have also occurred from time to time. Once a high-speed and heavy-duty train derails, it will bring a very big disaster. . Although it has been more than 100 years since the French scholar Nadal proposed the famous derailment coefficient criterion in 1896, the vast number of railway researchers have conducted long-term research on the derailment problem, but so far, it has not yet been completely analyzed. Find out the wheel-rail dynamic interaction, contact geometry and mechanism when the train derails. Therefore, in order to ensure the safe and comfortable operation of high-speed heavy-duty trains, it is particularly important to further carry out experimental research on ...

AI Technical Summary

Problems solved by technology

It can simulate the climbing and derailing process of the wheelset under the combined action of single factor and several factors. Usually, a pure rolling test bench or a rolling vibration test bench is used, but the rails are replaced by rollers with limited radius. There are essential differences between long rails, which will inevitably change the geometric relationship of the wheel-rail contact, resulting in the shape and size of the contact spot in the wheel-wheel contact state being different from the actual wheel-rail contact state, so that it cannot reflect the actual wheel-rail interaction characteristics

[0008] Therefore, the above-mentioned derailment test method and device have obvious deficiencies and shortcomings in the study of derailment mechanism.

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