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发明公开
CN101931213A 马达过载保护装置 无效 - 撤回

马达过载保护装置
摘要：
一种马达过载保护装置，其包括一驱动马达、一传动轴、一个负载轮、一弹簧、一感测器以及一控制器。所述驱动马达与所述传动轴的一端相啮合。所述传动轴包括一传动臂。所述负载轮可转动地连接在所述传动轴上。所述弹簧的一端连接在所述传动臂上，另一端连接在所述负载轮上。所述弹簧的临界拉伸力对所述传动轴所产生的力矩的绝对值等于所述驱动马达在额定输出功率下对所述传动轴所产生的力矩的绝对值。所述感测器设置在所述负载轮正对所述传动臂的位置处用以在马达过载时根据传动臂与负载轮之间的位置变化发出侦测信号。所述控制器用以接收感测器的侦测信号，并在接收到感测器的信号后切断所述驱动马达的电源以保护驱动马达。
摘要（英）：

A motor overload protection device comprises a driving motor, a transmission shaft, a load wheel, a spring, a sensor and a controller, the driving motor is meshed with one end of the transmission shaft; the transmission shaft comprises a transmission arm; the load wheel can be connected on the transmission shaft in a rotatable manner; one end of the spring is connected on the transmission arm and the other end is connected on the load wheel; the absolute value of the moment generated by the critical drawing force of the spring toward the transmission shaft is equal to the absolute value of the moment generated by the driving motor toward the transmission shaft under rated output power; the sensor is arranged in the position where the load wheel faces the transmission arm so as to send out the detection signal during motor overload according to the position variation between the transmission arm and the load wheel; and the controller is used for receiving the detection signal from the sensor and switching off the power of the driving motor to protect the driving motor after receiving the signal from the sensor.

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