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Hoisting crane and offshore vessel

A technology for cranes and booms, which is applied to cranes, hoisting devices, transportation and packaging, etc., and can solve the problem of low lifting rate

Active Publication Date: 2013-07-17
ITREC BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Heavier loads can be suspended using tie-on or reeved lifting cables, but the lifting rate is lower

Method used

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  • Hoisting crane and offshore vessel
  • Hoisting crane and offshore vessel
  • Hoisting crane and offshore vessel

Examples

Experimental program
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Effect test

Embodiment Construction

[0013] figure 1 A marine vessel 1 particularly suitable for laying pipelines on the seabed is shown. Obviously the vessel can be of different types, eg semi-submersible. The vessel may also be a platform, such as a tension leg platform or other platform.

[0014] The ship 1 includes a hull 2 ​​and a working deck 3 , and at the front of the hull 2 ​​is provided a superstructure 4 such as a crew accommodation.

[0015] Vessel 1 is provided with a pipeline-laying installation in an s-shaped arrangement with one or more welding stations on working deck 3 for joining together pipe sections 9a in a generally horizontal orientation . Also on the working deck 3 are so-called tensioners 8 for carrying the weight of the pipe 9 , which is suspended downwards from the vessel 1 .

[0016] In addition, the vessel 1 also has a stiger 5 protruding beyond the hull 2 ​​of the vessel 1 at the rear side of the vessel 1, which engages with the hull 2 ​​at a junction point on the hull 2 ​​so th...

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Abstract

The present invention relates to a hoisting crane comprising a substantially hollow vertical column, a jib and topping means for pivoting the jib up and down, comprising a jib winch and a jib hoisting cable. The crane further comprises hoisting means for hoisting a load, comprising a hoisting winch and an associated hoisting cable, the hoisting winch being disposed in the column, so that the hoisting cable extends from the winch through the hollow vertical column. The jib winch and the hoisting winch are arranged on a rotatable winch support, which is rotatable about a rotation axis substantially parallel with the vertical column, such that the winch support is mounted movable with respect to the vertical column. The hoisting crane further comprises a deep water winch positioned below the movable winch support and an associated deep water cable for raising and lowering a load extending through the rotation axis of the movable winch support, so that the deep water cable extends from the deep water winch through the hollow vertical column. The present invention further relates to a vessel provided with such a crane.

Description

technical field [0001] The invention relates to a hoisting crane as described in the preamble of claim 1 . A winch crane of this type has been described in application PCT / NL2005 / 000443. Background technique [0002] A disadvantage of this known hoisting crane is that the range of loads that can be lifted at a desired hoisting rate or hoisting rate is limited. The winch and lifting cables of the hoisting crane determine its lifting capacity. Heavier loads can be suspended using tie-on or reeved lifting cables, but the lifting rate is lower. In order to suspend heavier loads with the same lifting ratio, the weight and length of lifting cables and winches increase rapidly. This is why the known hoisting cranes have to make a compromise between the hoisting cable, the winch and the hoisting capacity of the hoist. Contents of the invention [0003] The object of the present invention is to propose an improved hoisting crane. To this end, the present invention provides a h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66C23/52B66C13/06B66C23/84B66D1/28
CPCB66C23/84B66C23/82B66C23/52B66C13/06
Inventor J·鲁登伯格
Owner ITREC BV
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