What are the ten things that tower crane drivers keep in mind? ? seven

1. Don't lift it obliquely

2. Don't lift it if it is overloaded

3. Don't lift it if the bulk is too full or the binding is not firm

4. Don't lift it if there are no protective measures on the edge of the lifted object

5. Don't lift it when people stand on it

6. Don't lift it if the command signal is unknown

7. Buried components. Strong winds above level 6 are not hoisted

Extended information:

The function of the tower crane tip is to bear the upper load from the jib pull rope and the balance arm pull rope, and transmit it directly to the tower structure through the rotary tower, turntable, bearing seat and other structural components. There are truncated cone column, forward or backward truncated cone column, herringbone frame and diagonal support frame at the top of the jack-up tower. ?

all upper rotary tower cranes need to be equipped with a balance weight, whose function is to support the balance weight, so as to form the balance torque required by the design in the direction opposite to the lifting torque. In addition to the counterweight, a hoisting mechanism is often installed at its tail. The hoisting mechanism is placed at the tail end of the balance arm together with the balance weight, which can play the role of part of the balance weight and increase the distance between the rope drum and the guide wheel of the tower tip, so as to facilitate the winding of the wire rope and avoid the rope disorder.

the amount of balance weight is inversely proportional to the length of the balance arm, and there is a certain proportional relationship between the length of the balance arm and the length of the boom. The balance weight is considerable. Generally, the light tower crane should be at least 3 ~ 4t, and the heavy tower crane should be nearly 3t.

Reference:

Baidu Encyclopedia-Tower Crane