The paper deals with the planetary train and its creative application in the ZQ-1 automatic Lifting gear mechanism of the rolling door with fireproof; The description analyzes and explores the w-hole designing process with regard to the working principle, designing and computation, and strength test and check-up;
By means of fracture analysis,bending strength and contact strength check of fan reducer gear for cooling water tower, the reasons of gear tooth broken are found. The corresponding improvements are proposed.
The cause of gear breaking and impeller rubbing on casing of Roots blower was analysed based on stress state of gear and bear,and two measures were made to improve stress state of gear at high capacity 〔
The occurring mechanism and corresponding calculation formula of viscous elasticity delayed energy consumption of engineering plastics are introduced,and the viscous elasticity delayed energy consumption of plastics bearing and gear are calculated and analyzed,offering theory gist of the design and application of plastics bearing and gear