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Product Description:

The flat top tower crane is more and more popular among customers with its beautiful appearance and quick and safe disassembly, and its application range is also expanded constantly. The PT series product is the new product with domestically advanced level and capability of international market competition, and the main models include PT5510-6t, PT7023-12t and PT7528-18t.

1.    The lifting boom and balance boom adopt cantilever boom structure, which reduces the hoisting modular and makes it more safe, convenient and flexible to install and uninstall, and reduces the requirements for hoisting equipment and the site.
2. Multiple special mounting brackets are available, which saves the installation time and ensures safe and quality installation.
3. The lifting boom adopts cantilever boom structure and variable cross-section materials, featuring more reasonable structural stress and long service life; and it is easier to make different combination of boom length.  
4. It adopts standard sections (for models of over 12t) of piece assembly structure, split structure stock, and assembled platform, which meet the transport requirements for standard container.
5. The extra-long boom is designed with a rope-supporting trolley, and the speed of which is 1/2 of that of the luffing trolley, which can achieve the most optimum rope-supporting effect. The structure has applied for national patent.
6. The lifting mechanism adopts speed regulation by frequency control or by eddy current brake series resistance, featuring good lifting performance; The slewing system adopts frequency control by torque electric motor or by coil winding type electric motor with hydraulic coupler, featuring smooth operation and small slewing impact.
7. All kinds of safety devices are reliable and easy to adjust; both the safety monitoring control system and traditional safety system are available, the double system ensures safety operation of the tower crane; the hydraulic system adopts low/medium pressure design, featuring higher safety and reliability.

Tower Cranes (Flat-Top)  


Max.lifting capacity & work range range & lifting capacity

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Q:Is there a phobia name for the fear of construction cranes?
It took some research but here goes nothing. Aeorema were the cranes used in greek theatre. If the fear of cranes is specifically related to a fear of being snatched up by one, maybe Aeoremaphobia would be a more correct term. Cheers
Q:Whats does the japanese crane symbolize?
The Japanese crane symbolizes serenity and hope. It is a legend in Japan that if you fold 1000 paper cranes, any wish will come true. There is a story about a girl named Sadako who died from radiation in Hiroshima after WWII who tried to fold 1000 paper cranes to be brought back to health. She nearly folded 1000, and died before then. People come to Hiroshima still today with 1000 folded paper cranes to honor Sadako.
Q:are parts availble for shop crane? Hydraulic ram plunger o rings has split....need part?
What is the crane make and model? If you don't have the model of the crane you can stop by almost any hydraulic/hose shop, they should be able to match up the packings.
Q:How long did it take Stephen Crane to write his book A Red Badge of Courage?
Q:what is so ironic about the open boat by stephen crane?
I like Persipho's answer. But I have to disagree on one point. Nature is not hostile. It's indifferent. If you try to swim the English Channel and are able to go 21.5 miles instead of 22 miles you will drown. Nature doesn't care if you go all that distance just to drown, This is the irony. It doesn't matter if you go 10, 15 or 21.5 miles. If you get a cramp you will probably drown. Nature doesn't care. That's what the correspondant means. In the story a bird watches them and is completely indifferent. The indifference of nature is part of the School of Naturalism that Stephen Crane, Jack London and others belonged to.
Q:Why are the rescue workers in turkey not using cranes to remove the debris of the earthquake? ?
It's not just a matter of being meticulous. You would have to know the structure of the pile of debris to be safe.
Q:I need the Safe working load for a Crane Lift Formula......Please Help?
Safe Working Load Formula
Q:What is the difference between crawler crane and tower crane?
Tower cranes are generally used in high-rise building construction. They are self elevating and attached. The boom is very long and the construction site is very common. Multi story buildings can be replaced by automobile cranes.Crawler cranes are used in municipal engineering, such as subways, bridges and so on. Lifting weights can be moved.It's very easy to tell from the outside, so you can search for some pictures.
Q:how do they erect those huge cranes for constuction?
How Do They Grow? Tower cranes arrive at the construction site on 10 to 12 tractor-trailer rigs. The crew uses a mobile crane to assemble the jib and the machinery section, and places these horizontal members on a 40-foot (12-m) mast that consists of two mast sections. The mobile crane then adds the counterweights. The mast rises from this firm foundation. The mast is a large, triangulated lattice structure, typically 10 feet (3.2 meters) square. The triangulated structure gives the mast the strength to remain upright. To rise to its maximum height, the crane grows itself one mast section at a time! The crew uses a top climber or climbing frame that fits between the slewing unit and the top of the mast. Here's the process: The crew hangs a weight on the jib to balance the counterweight. The crew detaches the slewing unit from the top of the mast. Large hydraulic rams in the top climber push the slewing unit up 20 feet (6 m). The crane operator uses the crane to lift another 20-foot mast section into the gap opened by the climbing frame. Once bolted in place, the crane is 20 feet taller! Once the building is finished and it is time for the crane to come down, the process is reversed -- the crane disassembles its own mast and then smaller cranes disassemble the rest.
Q:job description of crane operator and truck driver?
Crane operator has to be certified by the state and the truck driver has to have a class A drivers license :)

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