What Are The Precautions For The Topless Tower Crane Jacking Process?

Tower Crane Manufacturer will give you an explanation of the Topless Tower Crane lifting process:
1) When the maximum wind speed of the tower crane is greater than 3~4, it is not allowed to jack up.
2) During the jacking process, the direction of the boom should be the same as that of the standard section, and the hoisting arm should be braked by the slewing brake, and the truck should be parked in the jacking position.
3) If you want to increase the standard section several times in succession, after each section is added, before the standard section of the Topless Tower Crane itself, the main chord and the lower support of the tower must have 8 high strengths. Bolted connections, only in this case allow only one nut per bolt.
4) The steps on the standard section must be aligned with the existing standard section.



5) Before the lower support and the tower body are not bolted, the boom swing, the load-carrying trolley and the lifting operation are strictly prohibited.
6) In the process of jacking, if the oil pressure system is abnormal, stop the jacking immediately, retract the cylinder, place the lower bearing on the top of the tower body, and use 8 pieces of high-strength bolts to lower the lower support and the tower body. After the connection is secure, the hydraulic system is removed.
7) After the jacking is added to the required height (not exceeding the relevant standard), the boom should be rotated to different angles to check the fastening of the joints of the tower body, the foundation feet and the attached parts of the tie rods.
Safe construction, and the lifting operation in strict accordance with the operating procedures is the key. If you want to know more about Top Kit Tower Crane, please follow our website.

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Crane History

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As a  Luffing Tower Crane Supplier , let's share with you the history of the crane. In 10 BC, the ancient Roman architect Vitruvius described a lifting device in his architectural manual. The machine has a mast with a pulley on the top of the pole, the position of the mast is fixed by the pulling rope, and the cable passing through the pulley is pulled by the winch to lift the heavy object. Some overweight machines can use two masts to form a herringbone shape, moving the lifting object laterally, but the amplitude is small and the operation is very difficult. In the 15th century, Italy invented  Luffing jib Tower Cranes  to solve this problem. The crane has a sloping cantilever with a pulley on the top of the arm that can be lifted and rotated. However, until the 18th century, all kinds of lifting appliances used by human beings were powered by human and animal power, and they were limited in terms of lifting the weight, the scope of use and work efficiency. In th...
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