辞洋HA114.NET

The automatic positioning mechanism is mainly used for automatically positioning the device on the steel rail in a gapless way.

The rate of mil creep lengthening is not the same at the different time after the new mil laying on the track.

In a moment the red glare from the headlight streamed up the snow-covered track before the siding and glittered on the wet, black rails.

Rail must provide continuous, smooth, least resistance of rolling surfaces and good adhesion of traction to the train wheels.

The long track construction machine is a key engineering machine in this type of the railway construction.

By means of electron microscope, optical microscope and computer simulating the rail fragments were analyzed.

Following the accumulation of operation years of Shanghai Metro, the track equipments are deteriorating and the rail defects increased.

This article analyses reasons of the side rail wear in the sharp curve rail, puts forward the preventive measures and the handling means.

A road composed of parallel steel rails supported by ties and providing a track for locomotive - drawn trains or other wheeled vehicles .