Bases Fixing Angles For L44A1 Mast

Products Specification

Type , Model: Bases Fixing Angles For L44A1 Mast

Size: 1.6M

Use for : L44A1, L46A1,L46A2 ,L46A3 mast section ,P16A P16E, R16A, R16E , 1.6m L type mast

Materials: Q345B

Process: Blasting derusting, 

Painting:  Under painting , Middle painting, Surface painting.

Our factory produce and supply almost all famous brand tower crane :Mast section, Anchor Frame, Fixing angle ,Adaptor and so on as good quality and price.

Bases Fixing Angles For L44A1 Mast

Tower Crane Knowledge sharing：

Countermeasures and safety precautions for tower crane tilting

Because of the uneven settlement of the foundation, the inclined phenomenon of the tower crane occurs from time to time, which does not meet the safety requirement of 4‰ of the vertical degree of the tower crane.

For example, a QTZ63 tower crane was used by a customer of our company at the construction site. The lifting height was 40m, the concrete foundation was 5m 5m 1.3m, and its mass Fh was 81.3t. In the non-working state, M = 218.3tm; Fh = 7. T; F nu = 108 t.

There is part of backfilled soil on the south side of the foundation, which has uneven settlement due to heavy rain. At a height of 35m, the foundation slopes 315mm to the south.

Bases Fixing Angles For L44A1 Mast

Safety countermeasures at the initial stage of tower crane inclination

When the tower crane tilts and its verticality exceeds 4‰, it should be stopped immediately. When the tower crane is in the most adverse working condition , the critical maximum tilt L is calculated to ensure that the tower crane does not tip over at the height that can be measured.

Pay attention to observe the tilt speed and tilt amount of tower crane at regular intervals, and make records. Once the inclination reaches 0.5l and the inclination continues, the tower removal and other drastic measures shall be taken.

The following safety measures can be taken if the tower crane cannot be stopped immediately and the deflection is no more than 0.25l.

Bases Fixing Angles For L44A1 Mast

1) increase the weight blocks on the concrete foundation  increase the foundation quality, reduce the height of gravity center of tower crane and reduce the value of e.

2) add wall device at appropriate height of tower crane.

3) set the cable wind rope at the appropriate height of the tower crane to prevent the tower crane from continuing to tilt.

Tower crane tilt correction

After the slant of the tower crane is stopped, rectifying the deviation of the tower crane is required in order to restore the verticality of the tower crane to within 4‰ and meet the requirements for safe use.

Bases Fixing Angles For L44A1 Mast