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Lifting device

A lifting device, the first technology, applied in water conservancy projects, artificial islands, underwater structures, etc., can solve problems such as low efficiency, and achieve the effects of improving efficiency, reducing costs, and reducing idle time

Pending Publication Date: 2022-01-25
SICHUAN HONGHUA PETROLEUM EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In this working process, the efficiency is low because the time of retracting the hydraulic cylinder and pulling out the plug pin is not the effective working time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0040] Such as Figure 1-9 A lifting device shown includes a fixed ring 2, a first liquid cylinder 5, a first moving ring 3, a second moving ring 4, and a second liquid cylinder 6. One end of the first liquid cylinder 5 is connected with the fixed ring 2, and the first The other end of the hydraulic cylinder 5 is connected to the first moving ring 3 ; one end of the second hydraulic cylinder 6 is connected to the fixed ring 2 , and the other end of the second hydraulic cylinder 6 is connected to the second moving ring 4 .

[0041] The first hydraulic cylinder 5 pushes (pulls) the first moving ring 3, and then pushes (pulls) the leg 1 (at the same time, the second hydraulic cylinder 6 retracts (extends).) After it is in place, the second moving ring 4 and The leg 1 is connected, the first moving ring 3 is released from the connection with the leg 1, the second liquid cylinder 6 pushes (pulls) the second moving ring 4, and then pushes (pulls) the leg 1 (at the same time, the fir...

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PUM

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Abstract

The invention relates to the field of engineering equipment, in particular to a lifting device. The lifting device comprises a fixed ring, a first hydraulic cylinder, a first movable ring, a second movable ring and a second hydraulic cylinder, one end of the first hydraulic cylinder is connected with the fixed ring, and the other end of the first hydraulic cylinder is connected with the first movable ring; one end of the second hydraulic cylinder is connected with the fixed ring, and the other end of the second hydraulic cylinder is connected with the second movable ring which is connected with a pile leg. The first hydraulic cylinder pushes (pulls) the first movable ring, because the first movable ring is connected with the pile leg, the pile leg is pushed (pulls) (meanwhile, the second hydraulic cylinder retracts (stretches out)). After the pile leg is in place, the second movable ring is connected with the pile leg, the first movable ring is disconnected from the pile leg, the second hydraulic cylinder pushes (pulls) the second movable ring, then the pile leg is pushed (pulls) (meanwhile, the first hydraulic cylinder retracts (stretches out).). Thus, when one hydraulic cylinder retracts and the corresponding movable ring is disconnected with the pile leg, the other hydraulic cylinder works, the effective working time is greatly prolonged, and the purposes of reducing cost and improving efficiency are achieved.

Description

technical field [0001] The invention relates to the field of engineering equipment, in particular to a lifting device. Background technique [0002] Jack-up platforms are widely used in the fields of large-scale offshore wind power installation, oil and gas, etc., and its legs are hydraulically lifted for jack-up platform installation and other operations. [0003] Usually, when the legs of the self-elevating platform are raised and lowered, the fixed ring is connected to the platform, the moving ring is connected to the legs through bolts, and the moving and fixed rings are connected through hydraulic cylinders. Stretch out the hydraulic cylinder, lower the pile leg or press the pile, after the hydraulic cylinder is in place, pull out the latch, the hydraulic cylinder retracts, connect the hydraulic cylinder with the pile leg with the bolt, stretch out the hydraulic cylinder, lower the pile leg or press the pile. Such a cycle can complete the lowering of pile legs or pile ...

Claims

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Application Information

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IPC IPC(8): E02B17/08
CPCE02B17/0809
Inventor 张泽石会立
Owner SICHUAN HONGHUA PETROLEUM EQUIP