154HC Mast Section Using the practical experience, the fast elimination tower crane electrical breakdown method
practical experience-the fast elimination tower crane electrical breakdown method 1 uses the inquiry segmentation method to determine the electrical breakdown position, that is, by asking the operator on the spot, to understand the operation of the master control system, the lifting system, the rotary system, the luffing system, the cart running system and other parts of the operation, to distinguish the primary and secondary, to eliminate some doubtful points, to find out the system that may have faults.
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Using the method of observation, spring pressing and knocking to remove obvious electric trouble, the methods are as follows: Open the electric cabinet, check whether the electric appliance has obvious damage, scorch and connection line looseness, etc. Then check the contactor armature, various travel limit switch on the wheel, start brake button sensitivity. If you are sure that everything is OK, you can use a rubber hammer to hit the working components, especially the moving parts, when the tower crane is electrified. If the circuit fault suddenly disappears, it indicates that there is bad contact between the percussion element and the percussion element, which should be eliminated immediately.
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