Tower crane, also known as tower crane, originated in Western Europe. A rotating crane with a boom mounted on the upper part of a towering tower. The working space is large, mainly used for vertical and horizontal transportation of materials and installation of building components in building construction. It consists of three parts: metal structure, working mechanism, and electrical system. The metal structure includes the tower body, boom, and base. The working mechanism consists of four parts: lifting, luffing, slewing, and walking. The electrical system includes motors, controllers, distribution cabinets, connecting lines, signal and lighting devices, etc

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

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

1、 Upward rotating tower crane: The tower body does not rotate, and the boom and balance arm above the slewing support rotate fully around the center line of the tower body through the slewing mechanism. According to the usage requirements, it can be divided into running type, fixed type, attached type, and internal climbing type. The traveling tower crane can run along the track, has a wide range of work, and is widely used, making it suitable for multi-story building construction; If the base of the crane is fixed on the track or the tower body is directly fixed on the foundation, it becomes a fixed tower crane with a longer boom; If a fixed tower crane is connected to a building with attached rods at certain heights on the tower body, it is called an attached tower crane. It uses a tower body lifting device to make the upper rotating part of the crane correspondingly increase with the height of the building, and is used for high-rise building construction; The installation of a crane in a shaft or connected hole such as an elevator shaft, and the use of a hydraulic cylinder to make the crane climb upwards along the shaft according to the construction process, is called an internal climbing tower crane. It saves some of the tower body, has a large service range, and does not occupy the construction site, but has certain requirements for the structure of the building

2、 Lower rotating tower crane: The slewing bearing is installed between the base and the turntable, and all other working mechanisms, except for the walking mechanism, are arranged on the turntable to rotate together. In addition to the track type, there are also track type and tire type walking devices with track chassis and tire chassis. It has a low center of gravity, can be disassembled and transferred as a whole, is lightweight and flexible, and is widely used, suitable for multi-story building construction