1.概述驱动系统的机械制动器对传动的可靠性具有决定性的影响。倘若起重机起升机构的制动器失灵,能导致重物坠落,危及人身和货物的安全。由于机械制动器是通过摩擦把能量转换为热量,所以摩擦结合的可靠程度具有重大意义。在汽车制造业,多年来都以接近于实用的条件对摩擦结合进行试验。摩擦衬垫在投入使用之前,必须经历一系列模拟实际运行条件的试验,以证明其适用性。但对工业设备制动器的摩擦衬垫,通常不作这样的检验,因为这种制动器的需要量较少,工作条件也极不相同, 1. Overview The mechanical brake of the drive system has a decisive influence on the reliability of the drive. Failure of the brakes on the hoisting gear of the crane can result in heavy objects falling and endangering the safety of persons and cargo. Since mechanical brakes convert energy into heat by friction, the reliability of frictional coupling is of great importance. In the automotive industry, frictional combinations have been tested for years at near practical conditions. Before put into use, the friction pad must go through a series of tests to simulate the actual operating conditions to prove its suitability. However, the friction linings of industrial equipment brakes are usually not tested because the brake needs less and the working conditions are very different,