What Is A Tower Crane

Tower crane is abbreviated as tower crane, also known as tower crane, which originated in Western Europe.

Tower crane is abbreviated as tower crane, also known as tower crane, which originated in Western Europe. It is mainly used for the vertical and horizontal transportation of materials and the installation of building components in the construction of houses. It is composed of three parts: metal structure, working mechanism, and electrical system. The metal structure includes the tower body, boom, and base, etc. The working mechanism has four parts: lifting, luffing, turning, and walking. The electrical system includes motors, controllers, power distribution cabinets, connecting lines, signals, and lighting devices, etc.

The tower crane is a revolving crane with a boom-mounted on the upper part of a tall tower. The scope of work is large, mainly used for the vertical transportation of materials and the installation of components in the construction of multi-story and high-rise buildings. It is composed of three parts: metal structure, working mechanism, and electrical system. The metal structure includes a tower body, boom, base, attachment rod, etc. The working mechanism has four parts: lifting, luffing, turning, and walking. The electrical system includes motors, controllers, power distribution boxes, interconnecting lines, signal and lighting devices, etc.

Tower cranes are divided into two types: upper revolving type and lower revolving type:

1. Upper rotary tower crane

The tower body does not rotate, and the boom and balance arm above the slewing support makes a full rotation around the centerline 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 running tower crane can run along the track, has a large working range and is widely used, and is suitable for the construction of multi-story buildings; 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. Its boom is long; if the fixed tower crane is connected to the building with attachment rods at every certain height, it is an attached tower crane. It adopts the tower body height connection device so that the upper part of the crane can follow the building It is used for high-rise building construction; the crane is installed in the elevator shaft or other shaft or connecting hole, and the hydraulic cylinder is used to make the crane climb up the shaft according to the construction process. It is called an inner-climbing tower crane. Part of the tower body is saved, the service area is large, and the construction site is not occupied, but there are certain requirements for the structure of the building.

 

2. Lower rotating tower crane

 

The slewing bearing is installed between the base and the turntable. Except for the walking mechanism, other working mechanisms are arranged on the turntable to rotate together. In addition to the track type, there are also crawler types and tire types that use crawler chassis and tire chassis as the walking device. The machine has a low center of gravity, can be disassembled and transferred as a whole, is light and flexible, and has a wide range of applications. It is suitable for the construction of multi-story buildings.