256HC Mast Section The function and installation steps of tower crane balance arm key words: Tower Crane Fittings, tower crane balance arm,
Tower Crane balance arm in tower crane many components, is one of the important tower crane fittings. The function of the balance arm is to provide the reverse torque for the lifting arm, so as to ensure the balance of the body in the lifting process. In most cases, the balance arm of the tower crane is a welded structure made of I-beam and angle steel, which is divided into two sections and connected by a trunnion pin One end of the balance arm of the tower crane is connected with the revolving tower body by two special pin shafts, the other end is connected with the tower cap by a combination of rigid pull rods, and the tail part is provided with the balance weight and the lifting mechanism, the lifting mechanism itself has an independent base Four pin shafts are balanced on the balance arm of the tower crane. The weight of the balance weight varies with the length of the arm. In the process of installing the balance arm of the tower crane, the two balance arms should be assembled on the ground first, and the lifting mechanism, the electric control box and the resistor should be refined.
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The balance arm pull rod is mounted on the balance arm and should be connected. The slewing mechanism is connected with a temporary power supply, and the above parts of the slewing support are slewing to the direction convenient for installing the balance arm. Immediately after, the tower crane construction personnel should hoist the balance arm (the balance arm is provided with 4 mounting lugs) , the balance arm and the revolving tower body are fixedly connected with the pin shaft. Gradually raise the balance arm to the proper position, so that the balance arm on the tie Rod and the Balance Pipe Tie rod on the top of the tower connected with the pin wheel, through the pin shaft and open the pin. Finally, slowly lower the balance arm down and lift the balance weight to the rear of the balance arm, which is closest to the top of the tower.
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