Causes and remediation of railway line shaking

 

1, line shaking car disease overview shaking car is the train in operation due to the line continuous periodic unevenness generated by the forced vibration caused by the car body shaking.

Shaking car disease is a common railway engineering system, shaking car disease indicates that the train on the line to increase the force of the line, the line's destructive force to enhance the serious shaking car also endangered the safety of the line. In order to accurately detect the dynamic changes in the line and shaking car data, the current locomotive are installed on the car shaking car instrument, car shaking car instrument is the main principle of the main principle is to evaluate the quality of the line through the detection of the size of the acceleration of the locomotive body vibration state of the good and bad. Factors affecting the vibration of the car body are vertical acceleration and horizontal acceleration.

(1) the generation of vertical acceleration value of vertical acceleration is generally formed by the line longitudinal high and low, with the line of the triangular pit and the level of the location is prone to bridge, crossing, culvert before and after the turnout, turnout tip rail part and the turnout and the turnout between the ferry line.

(2) the generation of horizontal acceleration value of horizontal acceleration value is generally caused by the curve, the turnout area continuous small direction, rail hard bend and poor rate of change of gauge. Such as rail straight section alternately uneven wear, horizontal and rail direction of the reverse bit compound is not smooth, curve super-high settings and both the speed mismatch (such as under super-high, over super-high), line fasteners loose, sleeper failure, slurry mud, train wheelset and rail operation side side impact and formation.

If the line level state is bad, the centre of gravity of the rolling stock will change back and forth, so that the impact of the two strands of rail is different. When the speed increases, the wheel on the rail force increases, resulting in increased rail deflection, prompting the two strands of rail level unevenness increases. In the same location on the line there are high and low, horizontal, rail direction and gauge together with the disease is called track composite unevenness. Composite unevenness of the combination of a variety of forms, when there is a reverse bit of composite unevenness, if the train speed is high, it will lead to the train to do serpentine motion, shaking the car violently.

 

1, line shaking car disease overview shaking car is the train in operation due to the line continuous periodic unevenness generated by the forced vibration caused by the car body shaking. Shaking car disease is a common railway engineering system, shaking car disease indicates that the train on the line to increase the force of the line, the line's destructive force to enhance the serious shaking car also endangered the safety of the line. In order to accurately detect the dynamic changes in the line and shaking car data, the current locomotive are installed on the car shaking car instrument, car shaking car instrument is the main principle of the main principle is to evaluate the quality of the line through the detection of the size of the acceleration of the locomotive body vibration state of the good and bad. Factors affecting the vibration of the car body are vertical acceleration and horizontal acceleration.

(1) the generation of vertical acceleration value of vertical acceleration is generally formed by the line longitudinal high and low, with the line of the triangular pit and the level of the location is prone to bridge, crossing, culvert before and after the turnout, turnout tip rail part and the turnout and the turnout between the ferry line.

(2) the generation of horizontal acceleration value of horizontal acceleration value is generally caused by the curve, the turnout area continuous small direction, rail hard bend and poor rate of change of gauge. Such as rail straight section alternately uneven wear, horizontal and rail direction of the reverse bit compound is not smooth, curve super-high settings and both the speed mismatch (such as under super-high, over super-high), line fasteners loose, sleeper failure, slurry mud, train wheelset and rail operation side side impact and formation.

If the line level state is bad, the centre of gravity of the rolling stock will change back and forth, so that the impact of the two strands of rail is different. When the speed increases, the wheel on the rail force increases, resulting in increased rail deflection, prompting the two strands of rail level unevenness increases. In the same location on the line there are high and low, horizontal, rail direction and gauge together with the disease is called track composite unevenness. Composite unevenness of the combination of a variety of forms, when there is a reverse bit of composite unevenness, if the train speed is high, it will lead to the train to do serpentine motion, shaking the car violently.

3.3 poor maintenance of the turnout, easy to cause the horizontal acceleration value of the overrun for the turnout shaking car repair, a composite and part of the correlation of shaking car disease, depending on the actual situation of the site to take 'sieve, change, pounding, pads, grinding, change, dial, weld' and other comprehensive remediation methods to completely eliminate the disease; two for the rail has been permanent deformation of the lot. Second, for the rail has been permanently deformed lot, remediation and recurrence of the disease, the use of buried fixed piles using gauge bar fixed and other auxiliary means to eliminate.

 

If you wonder to know more knowledage oe railway maintenance equipment, please contact me:

 

Alina Shen

Jinzhou Tiegong Railway Maintenance Machinery Co.,Ltd.

E-mail: jztg0115@163.com / alina@tiegong.net

M.P/Wechat/Whatsapp:+86-18341633378

Mobile: +86-15041639960

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