Weihai fixed permanent tower crane as a construction site commonly used equipment, which parts are composed of?

According to the functions of each part, guheng tower crane can be divided into: foundation, tower, jacking, turning, lifting, balancing arm, lifting boom, lifting trolley, tower top, driver's cab, luffing and other parts.

Foundation of fixed crane: tower crane foundation is the foundation of the tower crane, it is an important factor affecting the overall stability of the tower crane; The stability of tower crane is the ability of tower crane to resist overturning.

Therefore, when doing tower crane foundation, must ensure that the endurance meets the design requirements, the strength of reinforced concrete at least reached the design value of 80%; The bottom of the concrete foundation should be flat and rammed, the bottom of the foundation cannot be made into a pot; The size error of foundation anchor bolts must be constructed in strict accordance with the requirements of the foundation drawing. Before installation, the foundation surface should be treated to ensure that the level of the foundation cannot exceed 1/1000.

Tower crane body: the side length of the tower crane body is generally about two meters, such as 1.7 meters, 2 meters, there are 2.1 meters, 2.7 meters, the larger also have more than three meters.

Tower cranes vary in height. Generally divided into two kinds of free height and attachment height. The general free height is about 50 meters; Generally, the attachment height is

About 200 meters, the height can reach more than 300 meters.

Lifting of tower crane: generally, the first installation, according to the size of the tower crane when the installation of an independent height, the height of the gap with the house as a layer by layer of the rise also a little bit less, when the distance is less than 10 meters, tower crane lifting began to appear difficulty, affect the lifting. Therefore, the tower crane must be raised again (general tower crane is jack-up), the tower crane again to a certain height, this process is called jacking, because the tower crane with their own hydraulic facilities to the standard section of a section of jacking up, so the habit is called jacking.

Swivel of tower crane: the swivel mechanism of tower crane is divided into lower swivel mechanism and upper swivel mechanism.

The main mechanism of slewing support and balance weight is arranged at the lower end of the tower crane, which has the advantages of less bending moment, low center of gravity, good stability, convenient installation and maintenance, and the disadvantage of higher requirements on slewing support and limited installation height.

Top slewing tower crane will slewing support balance weight, the main mechanisms are set in the upper end, its advantage is that because the tower does not slewing, can simplify the tower structure, jacking and joints. The disadvantage is that when the building exceeds the height of the tower, due to the influence of the balance arm, the rotation of the tower crane is limited, and the center of gravity is higher, the wind pressure increases, the weight increases, so that the total weight of the machine increases.

Lifting of fixed tower crane: lifting is the vertical lifting of the crane hook, lifting mechanism to make the weight vertical lifting movement.

The lifting height is also the effective height of the hook, which is the vertical distance from the base surface of the tower crane (or the top surface of the walking track) to the support surface of the hook. In order to prevent the equipment from being damaged due to the lifting height of the tower crane hook, a height limiter is installed on each tower crane.