Topless Crane ZJT7531

High quality Q345B steel, key link pin shafts specially treated for salt resistance, contribute to the strong structure of our tower cranes, providing your machine with a long service life, our sale is tower crane max capactiy is 20t, jib length is 80m.

Tower cranes are large lifting equipment used on skyscraper construction sites. They can reach heights of over 80 meters without support. Tower cranes have a lifting capacity of up to 20 tons and can move almost any construction material at the same time. They are erected next to buildings to ensure stability.

Weight: the weight of underground section without load and ballast with longest jib and maximum free-standing height.

Because tower cranes are stationary equipment, their bases do not move. Large fixed towers support horizontal beams or cantilevers that form an irregular "T" shape at the top of the tower. Tower cranes are commonly used in construction projects to install steel beams and other heavy building materials. It is also used in the shipping and transportation industry for loading and unloading heavy cargo ships.

 

The base of the tower crane rests on concrete pads, the thickness of which depends on the height and weight of the crane. Large anchors are used to secure the tower crane base to the concrete, and these anchors may be several metre into the ground. This holds the tower crane securely in place, minimizing the chance of collapse.

The boom sits atop a vertical tower that rises hundreds of metre into the air. The longer part of the boom has a cable attached to it and is used to move or position objects below, while the shorter part extends from the cable and acts as a counterweight. To improve the balance of the crane, more concrete or steel counterweights can be suspended from the shorter sections of the boom.

The point where the boom contacts the tower is usually where the operator's vehicle is located. The tower crane operator sits in this vehicle and controls the movement of the boom and material. The process of attaching materials to the tower crane cables is supervised by someone on the ground or inside the building. The person doing the job is called a "rigger, " and he or she talks to the crane operator by radio or hand signals.

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