What is a Tower Crane?

It is mainly used for vertical and horizontal transportation of materials and installation of building components in house construction. It consists of three parts: metal structure, working mechanism and electrical system. The metal structure includes the tower body, the boom and the base, etc. The working mechanism has four parts: lifting, luffing, slewing and walking. The electrical system includes motors, controllers, power distribution cabinets, connecting lines, signals and lighting devices, etc.

A tower crane is a rotating crane with a boom mounted on the top of a tall tower. The working range is large, and it is mainly used for vertical transportation of materials and component installation in multi-storey and high-rise building construction. It consists of three parts: metal structure, working mechanism and electrical system. The metal structure includes the tower body, boom, base, attachment rod, etc. The working mechanism has four parts: lifting, luffing, slewing and walking. The electrical system includes motors, controllers, power distribution boxes, connecting lines, signals and lighting devices, etc.

Tower Cranes Tower cranes are divided into two categories: upper rotating type and lower rotating type:

1. Upper slewing tower crane

The tower body does not rotate, and the boom, balance arm, etc. above the slewing bearing make a full revolution around the center line of the tower body through the slewing mechanism. According to the requirements of use, it is divided into running type, fixed type, attached type and internal climbing type. The operating tower crane can run along the track, has a large working range, and is widely used. It is suitable for multi-story building construction; if the crane base is fixed on the track or the tower body is directly fixed on the foundation, it becomes a fixed tower crane. The boom is longer; if the tower body of a fixed tower crane is connected to the building by attachment rods at certain heights, it is an attached tower crane. It uses a tower height connection device to allow the upper rotating part of the crane to follow the building. It is used in the construction of high-rise buildings because it is used in the construction of high-rise buildings. The crane is installed in a shaft or connected hole such as an elevator shaft, and a hydraulic cylinder is used to make the crane climb up along the shaft according to the construction process. It is called an internal climbing tower crane. Part of the tower body is saved, the service range is large, and the construction site is not occupied, but there are certain requirements for the structure of the building.

2. Lower rotary tower crane

The slewing bearing is installed between the base and the turntable. Except for the traveling mechanism, other working mechanisms are arranged on the turntable to rotate together. In addition to the track type, there are also crawler and tire types with crawler chassis and tire chassis as walking devices. The whole machine has a low center of gravity, can be disassembled and transferred as a whole, is light and flexible, has wide application, and is suitable for multi-storey building construction.