S69JR Basic Mast Tower Crane Masts

Products Specification

Type , Model:

S69JR Basic Mast Tower Crane Masts

S69JR Base Masts

L69 Base Masts

Size: 2mx2mx7.5m 

Materials: Q345B

Within: Pins, bolts, Ladder, Platform

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.

S69JR Basic Mast Tower Crane Masts

S69JR Base Masts

L69 Base Masts

Tower Crane Knowledge sharing：

How does the crane maintain balance?
Tower hanging with its huge body, huge pull, in the construction, transportation and other industries play a huge role. However, how does the tower crane maintain balance? It has become a problem that must be considered in the design and manufacture of safe production and even tower lifting.

Having learned basic mechanics, the lever consists of three parts-the power arm, the resistance arm, and the support point. The length of the power arm multiplied by the force applied to it is equal to the length of the resistance arm multiplied by the product of the resistance encountered, that is, the moment at both

ends is equal, and the balance of the lever can be maintained.

Although the structure of the tower crane is complex, it can be regarded as a lever as a whole. Balancing the force of the heavy weight and the raised object on the crane is the two forces added to this lever.

S69JR Basic Mast Tower Crane Masts

S69JR Base Masts

L69 Base Masts

In general, there are two fixed pulleys and one moving pulley(pulley group) in the upper part of the tower crane. The electric winch pulls the cable downward, one end pulls the weight, and the other end adjusts the balance according to the gravity of the weight.

The distance of the weight, In this way, the two ends are together and the building materials are raised to a high height.
Unlike the general lever, when the balance weight of the tower crane is used for different lifting tasks, the public center of gravity of the crane, heavy weight, and balanced heavy weight will still not cross the base platform(or be supported by wheels on the rails).

S69JR Basic Mast Tower Crane Masts

S69JR Base Masts

L69 Base Masts

The range, Because the gravitational action line of the object must be in the branch of the support. Therefore, the tower crane used on the construction site or other crane installed on the platform always has a mechanism to adjust the distance between the balance weight and the support point so that the moment can be balanced so that the heavy objects can be successfully lifted and lifted.

There will be no tipping. It is worth mentioning that if this condition is not met, for example, the heavy weight lifted or the balance weight is not heavy enough to make the center of gravity of the crane outside the platform after the load, the tower crane will be dumped, resulting in dangerous conditions.

S69JR Basic Mast Tower Crane Masts

S69JR Base Masts

L69 Base Masts