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Continuous stepping hydraulic lifting device and method

A hydraulic lifting device and lifting device technology, which is applied in water conservancy projects, artificial islands, underwater structures, etc., can solve problems such as slow lifting speed, low manufacturing precision requirements, and inability to continuously lift, achieving fast lifting speed and convenient operation , the effect of simple structure

Active Publication Date: 2012-11-28
CHINA NAT OFFSHORE OIL CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with the rack and pinion lifting device, the stepping hydraulic lifting device has the advantages of low manufacturing precision requirements, stable and reliable work, and economical cost, and is widely used in China; one of the main disadvantages is that it cannot be continuously lifted and the lifting speed is slow

Method used

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  • Continuous stepping hydraulic lifting device and method
  • Continuous stepping hydraulic lifting device and method

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Embodiment Construction

[0014] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0015] Such as figure 1 As shown, the present invention includes a pile-fixing tube 1, and the pile-fixing tube 1 is connected with the platform 2 as a whole. Two sets of lifting devices 3 are arranged symmetrically up and down in the pile-fixing barrel 1 . Each set of lifting device 3 all comprises a pile-holding device 4 welded on the inner wall of the pile-fixing tube 1, the bottom end of the last pile-holding device 4 connects the lifting cylinder 5, and the bottom end of the lifting cylinder 5 connects the following pile-holding device 6. The lifting cylinder 5 is connected to a hydraulic system (not shown in the figure). Both the upper pile gripper 4 and the lower pile gripper 6 are used for locking and loosening the pile leg 7 which is penetrated in the pile fixing barrel 1, and the pile leg 7 passes through the platform 2 and the bottom end ...

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Abstract

The invention relates to a continuous stepping hydraulic lifting device and method. The continuous stepping hydraulic lifting device comprises a pile fixing cylinder integrated with a platform, wherein, the pile fixing cylinder is internally and symmetrically equipped with an upper lifting device and a lower lifting device; each lifting device comprises an upper pile clamping device for locking and loosening legs inserted into the pile fixing cylinder; the upper pile clamping device is welded on the inner wall of the pile fixing cylinder, and the bottom end of the upper pile clamping device is connected with a lifting oil cylinder; the bottom end of the lifting oil cylinder is connected with a lower pile clamping device for locking and loosening the legs; and the lifting oil cylinder is connected with a hydraulic system. The continuous stepping hydraulic lifting device has the advantages of simple and artful structure, capability of realizing continuous stepping lifting operation and fast lifting speed, and is convenient in operation, thus the device can be widely applied to an ocean self-elevating platform.

Description

technical field [0001] The invention relates to a hydraulic lifting device and a lifting method, in particular to a continuous stepping hydraulic lifting device and a lifting method for a marine self-elevating platform. Background technique [0002] In marine engineering, the jack-up platform has a wide range of applications. Because of its characteristics of mobility, quick positioning, and simple construction, it is widely used in early reservoir surveys, offshore platform drilling, workover, platform equipment maintenance, and small oilfield exploitation. All aspects have played an important role. At present, the self-elevating platforms with this function in my country include: Ziqiang, Zili, Nanhai 5, Offshore Oil 161, Zhonghaichao 3, etc. These platforms are equipped with lifting devices for lifting and lowering. Existing platform lifting devices mainly include rack and pinion lifting devices and stepping hydraulic lifting devices. Compared with the rack and pinion ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02B17/08
CPCE02B17/021E02B17/0872
Inventor 孙友义李新仲侯金林张晖王翎羽
Owner CHINA NAT OFFSHORE OIL CORP
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