塔式起重机(塔吊)是怎样加高的（How is tower crane (tower crane) raised）.doc

塔式起重机(塔吊)是怎样加高的（How is tower crane (tower crane) raised） How is tower crane (tower crane) raised? 1 litre standard section In the process of hoisting should be less than 4 under the wind, lifting before the upper slewing mechanism is in braking state, does not allow a rotary motion (lifting process is strictly prohibited starting rotation and lifting operation). During lifting, the tower crane shall not be hoisted except for its own installation. If the hydraulic jacking system is abnormal, the jacking shall be stopped immediately, and the oil cylinder shall be retracted to check whether there is any lifting obstacle or the oil system fault. 1.1 preparations before the top rise A, according to the provisions of the pumping station oil to the hydraulic pump tank refueling; and press the test operation, the cylinder no-load operation 4~6 times, no abnormalities after the power off, stand-by. B, clean up all the standard section, at the junction of butter in the upper end of standard section, will be the standard section used in lifting and lifting positions of the boom line, so that the tower crane in the top Festival add up is not necessary in the process of rotary mechanism, can make the lifting process and section the shortest time; C, the lifting arm rotating top lifting sleeve frame in front of the balance arm in frame (rear jacking cylinder in the frame of the rear). 1.2 lifting operation (lifting device for falling off type) A on the ground, first, four imported rollers are fixed on the four corners of the standard section of the tower, then the standard section is hoisted and placed on the extended platform frame. B, remove the eight standard sections between the lower support and the standard section, the high-strength bolt, the pin at both ends of the jacking beam is pushed out and inserted into the round hole accurately. Make the jacking beam as close as possible to the tower, as far as the longitudinal axis of the cylinder is in the same plane. Start the h