The function of the tower crane tip is to accept the upper load from the jib rope and the balance jib rope, and directly transmit it to the tower structure through the rotary tower, turntable, bearing and other structural components. The top of the self-elevating tower has a truncated cone column type, a forward or backward truncated cone column type, a herringbone frame type and a diagonal support frame type.

All the upper slewing tower cranes need to be equipped with a balance weight, and its function is to support the balance weight to form a balance torque that is opposite to the direction of the lifting moment in terms of the function required by the design. In addition to the balance weight, a hoisting mechanism is often installed at its tail.

The reason why the hoisting mechanism is placed at the end of the equalizing arm together with the equalizing weight is that it can play the role of partial weighting, and the other is to increase the distance between the rope drum and the tower tip guide wheel, so as to facilitate the winding of the wire rope and prevent the occurrence of The rope disorder phenomenon.

The amount of balancing weight is inversely proportional to the length of the balancing arm, and there is a certain proportional relationship between the length of the balancing arm and the length of the boom. The balanced weight is quite considerable. The light tower crane generally needs at least 3 to 4t, and the heavy tower crane is nearly 30t.

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