Investigation on Temperature Properties of Elevator Magnetorheological Brake

Abstract

Abstract: A new MR brake(MRB) was designed for traction elevator because of the shortcomings of the existing traction elevators with machine-electric brake—high operating impacts and high noise. The device had a dual-coil structure, which also designed channels for the circulation of coolant liquid for integral heat radiating, satisfying elevator braking with large braking torque and good heat dissipation. Based on mathematical model in heat transfer, the numerical simulation analysis was performed for thermal field of MRB in no-load operation conditions and in typical emergency braking situation with finite element software. The work improved heat dissipation by using water cooling, revealing the temperature changing regularities under typical condition of key parts. The reasonable working temperature range was verified with test methods. Simulation and experimental results show that temperature has a greater impact on braking mechanics performance; however, the device can satisfy the requirements of the elevator operating with the effective cooling conditions.

Key words: traction elevator, magnetorheological（MR）, brake, temperature

摘要： 针对现有曳引电梯使用的机械式制动器存在的运行冲击大、噪声大的缺点，设计了一种新型磁流变制动装置。该装置具有双线圈结构，且考虑了有利于整体散热的冷却液流道，满足电梯制动应具有的较大的制动力矩和良好散热功能的要求。基于装置的热传导过程数学模型，采用有限元法对装置空载运行和紧急制动典型工况的温度场进行数值仿真分析，研究采用水冷却提高装置散热性能的有效性，揭示典型工况下装置关键部位的温度变化规律，并通过实验方法验证其是否处于合理的工作温度范围。仿真与实验研究结果表明：在典型工况下，温度对曳引电梯磁流变制动装置的制动力学性能有较大影响，所设计的有效冷却条件使装置能满足电梯运行工况要求。

关键词: 曳引电梯, 磁流变, 制动器, 温度

CLC Number:

TB381
TH-39

Zheng Xiangpan, Chen Kaifeng, Chen Shumei. Investigation on Temperature Properties of Elevator Magnetorheological Brake[J]. China Mechanical Engineering.

郑祥盘, 陈凯峰, 陈淑梅. 曳引电梯磁流变制动装置的温度特性研究[J]. 中国机械工程.

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