AO Hai ping, WANG Wen shui

 

(Hangzhou Special Equipment Inspection and Research Institute, Hangzhou 310003, China)

 

 

Abstract: In order to solve the problems of the safety gear′s abrasion and lifetime, the simulation analysis of progressive safety gear in the braking process based on SolidWorks was investigated. The braking process of a particular type of progressive safety gear was simulated based on SolidWorks/Motion and variation curves of the deceleration, the friction and the sliding distance were obtained. The dynamic behavior of the progressive safety gear in the braking process was analyzed on this basis. The abrasion of wedge block during lift type test, supervisory inspection and periodical inspection were evaluated based on the simulation result and the friction energy theory. The results show that the wear volume of a particular type of progressive safety gear during the supervisory inspection stands at around 6 percent of the total acceptable wear volume and stands at around 2.4 percent during the periodical inspection, the safety gear′s abrasion will limit its lifetime, it′s necessary to restrict the safety gear′s normal lifetime to ensure that it can work reliably.

 

Key words: SolidWorks; lift; progressive safety gear; abrasion