Flat Top Crane

● Simplified Structural Mechanics

Compared to conventional models with mastheads and tie-bars, the boom system features more straightforward mechanical modeling.

● Enhanced Installation Efficiency

The masthead-free design significantly reduces installation height, enabling faster and safer erection while meeting the demands of large-scale construction.

● Specialized Facade Operation Capability

Ideal for building facade lifting operations, these cranes can operate along building edges or cantilevered structures, facilitating efficient installation and maintenance of exterior cladding materials.

● Critical Safety Enhancement

The horizontal hammerhead boom configuration not only simplifies high-altitude boom assembly but also eliminates the complexities and hazards associated with aerial tie-bar disassembly.

1. Reduce the lifting capacity of the disassembly and assembly tower crane equipment

When the ordinary tower crane installs the boom, the boom and the tie rod must be connected on the ground and then hoisted as a whole, and the requirements for lifting equipment are the highest at this time, and there must be a large lifting capacity and lifting height. Due to the cancellation of the tower head, the flat-top tower crane has a small unit mass, low installation height, and the maximum installation height can be reduced by more than 10m than other tower cranes of the same level, and the boom section of the flat-top tower usually has 4m, 5m or 10m sections. Taking the 50m long boom as an example, its maximum unit mass is only equivalent to about 1/5 of the total number of booms, and the requirements for lifting equipment are greatly reduced compared with the disassembly and assembly of the boom in the air section by section and the overall hoisting, which not only saves the cost of disassembly and assembly, but also is safer and faster.

2. It is suitable for group tower work

Because the flat-top tower cancels the tower head, the overall height of the cross-operation of the flat-top tower group can be greatly reduced, and it has the advantages of less overall installation time, low requirements for installation equipment, reducing the pressure weight of each tower crane and adopting a smaller tower body section and underframe.

3. It is suitable for construction with special requirements for height

The flat-top tower has no tower head, the effective height of the hook is greatly improved, and the space utilization rate is high, so it is very suitable for occasions with special requirements for height, such as the reconstruction and expansion of the airport, the construction next to the airport, the construction in the tunnel and the plant, and the construction under the high voltage line.

4. It is suitable for construction where amplitude changes are required

The special connection mode of the crane arm section of the flat-head tower and the absence of the tower head and the tie rod make the disassembly and assembly of the boom very simple and safe, if the length of the boom needs to be changed (lengthened or shortened) during the construction process, the entire boom is not removed, and the addition and subtraction of the arm section can be completed in the air. Ordinary tower crane is limited by the tie rod, the boom can only remove the arm section outside the hanging point, it is very difficult to remove the boom tie rod, and the use of flat-top tower can easily remove the arm joint in the air at will.

5. It is easy to disassemble and assemble under restricted conditions in the field

If the site conditions are limited, the use of flat-top towers when the truck crane cannot be approached is undoubtedly the best solution. Because of the unique boom connection method of the flat-top tower, the entire boom can be disassembled and assembled in the air section by section, and the boom can be directly removed from the transport vehicle if necessary.

6. The boom steel structure has a long life and high safety

The use of flat-top tower is more stable than ordinary tower crane, especially in the rotation or emergency braking, the flat-top tower boom is only affected by the downward load in the direction, which is relatively simple; The boom of the ordinary tower crane is additionally affected by the horizontal and upward component caused by the action of the tie rod. In addition, the ordinary tower crane also makes the stress of the same part of the boom obviously different due to the different position of the luffing trolley, and the result of the comprehensive action makes the main stress member of the boom often subjected to the action of tension and compression alternating stress, and often becomes the main reason for the fatigue damage and even fracture and weld cracking of the boom; The boom of the flat-top tower is not affected by alternating stress in both vertical and horizontal directions, which greatly improves the service life and safety of the boom steel structure.

7. The applicability of the boom is good and the utilization rate is high

It is important that the design of the flat-top boom is easy to modularize. For manufacturers, boom modularization can greatly reduce design and manufacturing costs, thereby reducing the price of flat-top towers; For the user, it can give full play to the flexibility and adaptability of the boom.

8. Low design cost

The design of the flat-top tower omits the design and calculation of the tower head and the tie rod, and the calculation condition of the boom is less, the mechanical model is simple, the calculation amount is greatly reduced, the calculation result is closer to the actual value, and it is convenient to carry out the modulus design, so as to greatly reduce the design cycle.

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