Truing unit's profile bar of 3RG600C inner ring raceway grinding machine was increased in order to im- prove the quality of bearing for speeded passenger car.

Increase Loading Quality, Ensure Operation Safety of Speed-up Trains;

Try our best to safeguard the safety of the sixth speed-up and the further development of harmonious railway construction;

Technical improvement scheme of 100 t telescopic arm crane for railway speed-up;

Modification for raising speed of NS100GA-5 rail crane braking system;

By analyzing existing problem of Xi′an-Baoji raising speed district catenary wire fork,with the various technical data of raising speed district field running catenary wire fork detection,this paper discussed raising speed district catenary wire fork changes in law and proposed some advice for raising speed district catenary wire fork inspection and adjustment.

By statistical analysis to a large number of data collected from the reliability test of 120km/h raising speed wagon,this paper,based on the theory of reliability engineering,elaborated the reliability of the tested wagon in the field of running safety,maintenance support,failure mode effect and criticality.

On basis of hard point elimination of OCS equipment in Harbin-Lanling of Beijing-Harbin line in the 6th speed raising of railway in large scale, and by comparison and analysis of data, puts forward the causes of hard points and measures on elimination of them.

Several lateral rigidity reinforcement schemes for 32 m simply-supported PC T-beams on existing single-line railway bridges under train speed raising are studied.

The speed raising and technical modification should, under the premise of safe transportation, make fully use of the existing equipment and try to reduce reconstruct work.