M619C Mast Section For Tower Crane Masts

Products Specification

Type , Model: L44A1 Mast Section For Tower Crane Masts

Size: 2mx2mx5m  (2.13x2.13x5.32m)

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.

MC465 mast section ,  MC310 K12 mast section, MC310 K16 mast section,  MCT385 L14 mast section,   MCR 225A mast section,  MCR295 H16 mast section, MCR295 H20 mast section ,MCR295 H25 mast section

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M619C Mast Section For Tower Crane 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 liftingHaving 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.

M619C Mast Section For Tower Crane Masts

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.
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.

The range, Because the gravitational action line of the object must be in the branch of the support.

M619C Mast Section For Tower Crane Masts

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.

In order to avoid the occurrence of accidents, what problems should be paid attention to in the construction of tower crane infrastructure?
Tower lifting is a lifting equipment with powerful capabilities and is widely used in construction, transportation and other industries.

Because it is composed of huge steel structures, the stability of the tower hanging foundation is of great importance.

In the tower hanging accident, the collapse of the tower hanging occupies a large proportion, and the reason is caused by the unqualified foundation of the tower hanging.

So, in order to avoid the occurrence of Tower hanging accidents, tower hanging infrastructure should pay attention to what issues

M619C Mast Section For Tower Crane Masts

 there are three types of reasons for tower crane basic accidents
In order to rush the construction period, part of the site was hastily installed in the absence of concrete strength, so that the tower's hanging weight exceeded the limit of the ground stress, and an unfortunate incident of collapse and tipping occurred
The excavation work of some construction units near the tower hanging foundation led to landslides and even displacement triggered tower hanging accidents
Due to the excessive groundwater extraction in many cities in China in recent years, groundwater funnels have been generated, which has caused uneven settlement and affected the operation and construction of Tower cranes.
Therefore, in order to prevent the collapse of the tower crane, the construction unit must ensure that the ground endurance meets the design requirements when making the tower crane foundation.

The strength of the reinforced concrete reaches at least 80 % of the design value. Special treatment measures should also be taken for the foundation of the tower with basement works: for example, piling under the foundation and welding the steel bars at the end of the pile with the foundation foot bolts firmly.

M619C Mast Section For Tower Crane Masts

MC465 mast section ,  MC310 K12 mast section, MC310 K16 mast section,  MCT385 L14 mast section,   MCR 225A mast section,  MCR295 H16 mast section, MCR295 H20 mast section ,MCR295 H25 mast section

Concrete foundation should be flat and compacted, the bottom of the foundation can not be made into a pot bottom. The size error of the foundation foot bolt must be strictly in accordance with the requirements of the base diagram.

The foot bolt must maintain a sufficient length of the ground surface, and each foot bolt must be pre-tightened with a double nut. The base surface must be processed before installation to ensure that the level of the foundation can not exceed 1/1000.

At the same time, the tower hanging foundation must not accumulate water, which will cause uneven settlement of the tower hanging foundation. In the vicinity of the tower hanging foundation, do not dig pits or ditch at will.

MC465 mast section ,  MC310 K12 mast section, MC310 K16 mast section,  MCT385 L14 mast section,   MCR 225A mast section,  MCR295 H16 mast section, MCR295 H20 mast section ,MCR295 H25 mast section