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Large range of services does not occupy the construction site
- Apr 12, 2018 -

The tower crane is a rotating crane with a boom mounted on the upper part of the tower. The scope of work is large and it is mainly used for vertical transportation of materials and component installation in the construction of multi-storey and high-rise buildings. It consists of three parts: metal structure, working mechanism and electrical system. Metal structures include towers, booms, bases, attachment rods, and the like. There are four parts of lifting, changing, rotating and walking in the working organization. Electrical systems include motors, controllers, power distribution boxes, interconnecting lines, signals, and lighting devices.

Tower cranes are divided into two types: rotating and rotating:

First, the upper rotary tower crane: the tower body does not rotate, the slewing bearing above the boom, balance arm, etc., through the slewing mechanism around the centerline of the tower for full rotation. According to the requirements of use, it is divided into running, fixed, attached and inner climbing. Operational tower cranes can be operated along rails, with a wide range of work and wide applications. They are suitable for multi-storey construction. If the crane base is fixed on the track or the tower is directly fixed on the foundation, it becomes a fixed tower crane. The boom is long; if a stationary tower crane tower body is attached to the building at a certain height by attaching rods, it is an attached tower crane. It adopts a tower body to connect the high device so that the upper part of the crane can be used with the building. The height of the object is increased and correspondingly increased. It is used in the construction of high-rise buildings; the crane is installed in wellbore or connected holes in the elevator shaft, etc. The use of hydraulic cylinders to allow the crane to climb up the wellbore in accordance with the construction process is called an internal climbing tower crane. Some towers are saved, the scope of services is large, and construction sites are not occupied, but there are certain requirements for the structure of the buildings.

Second, under the rotating tower crane: slewing bearing installed between the base and the turntable, in addition to the walking mechanism, the other working mechanism are arranged on the turntable together with the rotation. In addition to the track type, there is a crawler type and a tire type which uses a crawler chassis and a tire chassis as a walking device. It has a low overall weight, can be dismantled and transferred as a whole, lightweight, flexible and widely used, and is suitable for multi-story construction.