| 摘要 |
<p>A lifting device for hanging electrical apparatus comprising a connection member, a lifting system, a control circuit and a carrier. The connection member is provided with an upper connection unit (21) and a lower connection unit (22) which are connected to enable the supply of power and separated to disable the supply of power. The lifting system comprises a motor (31) , a deceleration case (32) and a winding means. The motor (31) is fixed in the suspended ceiling by the carrier. The control circuit comprises a switch for ascending control, a switch for descending control and a remote transmitting circuit which are provided on the remote controller. The control circuit further comprises a remote receiving circuit, a CPU and its periphery circuit, a execution circuit, a limiting switch for ascending, a limiting switch for descending and a microswitch for detecting the idle load which are provided in the lifting system.</p> |
