Abstract: With the development of social economy, China's transportation industry has developed rapidly, and railway engineering construction also made great …
1 Introduction Fig. Q Assembly drawing of main shaft and oil seal end cover1 - Gland; 2 Oil seal; 3 Spindle; 4 cover On DF4 locomotives, the hydrostatic motor …
1 Accident overviewThe drag chain belt of the quay bridge trolley numbered QC01 at container terminal Guangzhou Nansha Port deviated, causing serious edge tearing, wear and …
1. Overview of bearing developmentThe development railway freight vehicle bearings in China is mainly divided into five aspects: the change structure, material, cage …
The surface treatment technology of rolling bearing refers to changing the composition, structure and performance parts be treated by certain means, so as improve service …
At present, China is still a large country of coal production and consumption in the world. Coal mining decentralized efficiency needs to be improved. Safety accidents …
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