132HC Mast SectionLifting moment limiter of car luffing tower crane commissioning mode
Taking the lifting moment limiter applied on QTZ63 tower crane as an example, the debugging method of the arch plate type moment limiter of tower crane is introduced. When the hook is no-load, use the screwdriver to distinguish the trip switch 1,2 and 3, confirm whether the three switches are sensitive and reliable. 1 Stroke Switch 1 limit switch with 80% rated torque, depress the switch, buzz alarm on the linkage platform. 2 Trip Switches 2 and 3 are limit switches with additional Torque, press the switch, the lifting mechanism of the lifting mechanism and the working power supply of the luffing mechanism forward are blocked, the lifting hook can only be dropped, and the luffing trolley can only be run backward And linkage on the abettor lights flashing, continuous alarm Buzzer.
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2. Adjust the hook to take four times the rate and break the height of 40 meters below, lifting weights slightly off the ground, the car may run. 3. When the working range is 50 meters and the arm length is 25 meters, the lifting weight of the trolley is 2290 kg. After the lifting weight is stable, the adjustment screw 4 corresponding to the travel switch 1 is changed into the travel switch 1 when the travel switch breaks Tighten adjusting nut accordingly 7.4. Adjust the stroke switch 2.5 according to the fixed amplitude variable code modulation Torque limiter. Adjust the Torque limiter according to the fixed code amplitude and adjust the stroke switch 3.
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