Internal expanding pile hanging device

Abstract

The invention relates to an internal expanding pile hanging device, which comprises a driving cone, a cylinder, a cylindrical body head, a guide cone, a balance arm and a plurality of external expanding blocks; wherein, two ends of the cylinder enable respective solid connection with the cylindrical head and the guide cone, and an enclosed chamber is formed; an internal diameter of the cylindrical body head is partially cooperated with the cylinder at the upper part of the driving cone for realizing axial movement of the driving cone in the enclosed chamber; simultaneously, the balance arm is arranged on the cylindrical body head, the driving cone is cooperated with a plurality of windows arranged on the cylinder through external expanding blocks. The device of the invention is capable of hanging and moving the large-scale pile tubes with a fast , convenient and high efficient mode, the pile tube can be positioned at a correct work position, the design for a hanging point position and redundant welding work can be omitted, so that a system is easily controlled; the adaptable caliber scope of a suspender is increased, and one device with multiple functions can be realized; when the pile tube is hanged up, because the driving cone is in an inverted triangle form, a gravity self-locking principle is realized on the basis of theory, thereby the security of the pile tube in air can be ensured.

Description

technical field [0001] The invention relates to a pile hanger, in particular to a large-scale steel pipe suitable for lifting, moving and placing offshore platforms, downpipes for oil and natural gas and other large-diameter tubular objects, which can realize large-scale pipe piles conveniently, quickly and efficiently The position moves so that the pipe pile is in the correct working position of the internal expansion pile hanger. It belongs to the field of marine engineering technology. Background technique [0002] At present, the following two methods are mainly used for the lifting and transportation of pipe piles: [0003] 1. For single-section pipe piles with a length of less than 15m and prestressing applied, special hooks can be used to hook the inner walls of both ends of the pipe piles for direct horizontal lifting, but this method is not suitable for longer pipe piles. [0004] 2. For the hoisting of longer pipe piles, it is necessary to check the design of the...

AI Technical Summary

Problems solved by technology

At the same time, expensive positioning spot welding and the use of temporary hoop block lifting points are also required

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