The hydraulic jacking system is applied to remove or add mask sections. In this way, the hammerhead crane can rise or descend with a building's ascending or descending. Meanwhile, the crane's hoisting capacity wouldn't go down because of rising of itself. The maximum hoisting capacity is 10t.

The hoisting mechanism features high working speed, great speed control performance, stable operation and high efficiency. With double motors and a angle transmission gearbox, the hoisting mechanism ensures low-speed heavy loading, high-speed light loading. The maximum hoisting speed is 80m/min.

The motor used to drive the trolleying mechanism is designed with three speeds. Hence, the cabin can travel with speed as 15m/min, 30m/min or 60m/min with the help of a high efficiency and small volume planetary reducer.

The slewing mechanism is driven by a torque motor with an eddy current retarder brake. The motor features a wide speed adjustable range and non impact. The slewing mechanism achieves high bearing capacity and smooth startup and brake.

The hammerhead tower crane has a wide working range and multiple working modes. By changing or adding components and auxiliary devices, the top-slewing crane can be altered to independently fixed or attached type to meet different requirements. The maximum freestanding height is 60m, while the maximum attached height comes up to 162m. An attached crane can be directly installed on a building or a concrete foundation near a building. The jib is available in various lengths including 45m, 50, 55m and 60m to meet demands of different jobsites.

The hammerhead tower crane is also designed with safety features. Every mechanism is equipped with brakes to ensure safe and reliable operation. The city tower crane comes with various limiters including moment limiter, overload limiter, slewing limiter, trolley travel limiter and height limiter and protection devices for situations with broken cabin rope involved.

The cabin is installed separately on one side of the tower. It provides full view and a great working environment. Air conditioner is optional. Customers can order from us or buy by themselves. The jib is held by a rigid duplex pull rod and it has a lightweight structure. Mask sections are assembled using fishplates, which leads to safety, reliability and easy transportation.

The power switch provided by users themselves should have maximum rated current over 250A. The switch should be installed at the same side of the incoming line of the power supply on the tower chassis and kept less than 3 meters from the mask sections.

With all these characteristics mentioned above, our hammerhead tower crane is suitable for many circumstances including high-rise restaurants, residential buildings, high-rise industrial buildings, large scale industrial plants, tall chimneys built with sliding mode method and simple warehouses, etc.