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International Standard Serial Number:
ISSN 1001-4551
Sponsor:
Zhejiang University;
Zhejiang Machinery and Electrical Group
Edited by:
Editorial of Journal of Mechanical & Electrical Engineering
Chief Editor:
ZHAO Qun
Vice Chief Editor:
TANG ren-zhong,
LUO Xiang-yang
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meem_contribute@163.com
ZHANG Yong1, JIN Zhong ping1, WANG Di yu1, LV Xin ce1, LIN Rong1, HUANG Song tan2
(1.Taizhou Special Equipment Supervise and Inspect Center, Taizhou 318000, China;2.Key Laboratory of Special Purpose Equipment and Advanced Manufacturing Technology, Ministry of Education, Zhejiang University of Technology, Hangzhou 310014, China)
Abstract: Aiming at the problem that during the braking process of the elevator safety gear, the braking performance affected by the temperature rise, the measurement of temperature rise during braking process of diamond surface safety gear was studied. The material properties and thermal parameters of the block was tested, the values of modulus of elasticity, thermal expansion coefficient, thermal conductivity and specific heat change with temperature were obtained, the grids of model was divided by Hypemesh, the velocity and pressure amplitude curves were defined on the block, the friction generates heat between block and guide rail was simulated by Abaqus, the maximum surface temperature distribution of clamp block under different loads and speeds were obtained. The test of measurement of braking temperature rise was carried out by test tower, thermocouple and temperature recorder, the temperature changes under different loads and speeds were obtained, the simulation results and test results were also analyzed. The results indicate that the rated speed below 2.5 m/s, the J thermocouple is used and the maximum temperature measured is the same as the simulation result.
Key words: braking process; diamond block; simulation analysis; temperature rise measurement