Gantry crane electrical equipment safety precautions

        overhead bridge crane  drive motor through reducer and drive mechanism to achieve hook front, left, up and down, in order to ensure safety at work, you should set the necessary electrical protection systems, such as the main disconnect switch, emergency power off switch, short circuit protection, overload protection, limit protection. To the sound of the motor regularly shuttle Sik and fever case, the solenoid is working properly. Controllers and contactors are flexible to use. Must do: First, prevent operating errors or controller, protection plate and other electrical failure caused by loss of control, the occurrence of heavy objects fall or collision accident; second is to prevent sliding touch bare wires or insulation damage power, poor grounding an electric shock; three is flammable and explosive places, must be explosion-proof electric hoist

Six overweight bridge inspection and testing machine
(1) Under normal circumstances, overhead gantry crane  should be checked once a year.
(2) Where a new installation, repair, alteration, normal use of time longer than two years, one year or disable  bridge gantry crane ,  lifting test procedures shall be in accordance with its test, after passing the order put into use.
(3) Load tests include no load test, static load test, dynamic test.