曳引机是电梯最关键的部件之一,直接影响到电梯的整机性能。为此,在电梯安装完毕进入整机运行前,必须对曳引机的性能进行反复的模拟运行试验,综合检测曳引机的振动、噪声、发热及制动灵敏等参数。下面介绍一种曳引机模拟试验用的自动间歇正反转电路。应注意的是,在实际运行中的电梯曳引机上是不能装用这种延时电路的。工作原理:合上附图中低压断路器Q,只要按下控制按钮 The traction machine is one of the most important parts of the elevator, which has a direct impact on the overall performance of the elevator. To this end, the elevator installation is completed into the machine running, the performance of the traction machine must be repeated simulation test, the comprehensive detection of the traction machine vibration, noise, heating and braking sensitivity and other parameters. The following describes a traction machine simulation test with automatic intermittent positive and negative circuit. It should be noted that in the actual operation of the elevator traction machine can not be equipped with this delay circuit. How it works: Close the low voltage circuit breaker Q in the picture, just press the control button