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Crane vessel

A crane ship, crane technology, applied in the direction of cranes, ship accessories, passenger handling equipment, etc., can solve the problems of damaged cantilever, wire jamming, accidents, etc.

Active Publication Date: 2013-12-18
ITREC BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Another problem associated with such a heavy crane block is that the block will tend to sway relative to the jib, for example as the jib swings
Especially in rougher seas, the swaying of the main crane undercarriage can lead to accidents
A swaying main crane slipping under can damage the jib and wires can get stuck behind them

Method used

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Examples

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Embodiment Construction

[0018] figure 1 The figure shows a crane vessel 1 according to the invention. The ship 1 comprises a hull 2 ​​with a working deck 3 and at the front of the hull 2 ​​a superstructure 4 serving as crew accommodation, etc.

[0019] Furthermore, the ship 1 has a rotating crane 20 which is placed in the rear end of the hull in this example. figure 2 The crane 20 shown in detail in has a substantially hollow vertical column 21 with feet 22 fixed to the hull 2 ​​of the ship 1 . Furthermore, column 21 has a top 23 .

[0020] The crane 20 has a jib 24 which is figure 1 The middle illustration is shown in two different positions. An annular support structure 25 extends around the vertical column 21 and guides and carries the cantilever connection member 26 such that the cantilever connection member 26 , and thus the cantilever arm 24 , can rotate about the column 21 .

[0021] In this case, the boom connecting member 26 forms a substantially horizontal pivot axis 28 such that the ...

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PUM

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Abstract

This invention relates to a crane vessel (1,100) comprising a revolving hoist crane (20,120) and a method of using such a vessel. The hoist crane comprises a jib (24,124), main hoisting means and auxiliary hoisting means for raising and lowering a load. The main hoisting means comprise a main hoisting tackle (3,130) with a main hoist upper block (38,138) connected to the jib of the hoist crane and a main hoist lower block (39,139). The vessel comprises a jib rest (10,110) for supporting the jib when the crane is not in operation. According to the invention the main hoist lower block is assembled from a sheave block (163) comprising the sheaves (132) of the main hoist lower block and a load attachment assembly (133) comprising the lowering weight (137) and the main load attachment device (34,134). The crane vessel is provided with a load attachment assembly storage device (10,150) for storage of the disassembled load attachment assembly and displacement means (167) capable of engaging with and displacing the load attachment assembly while it is assembled to the sheave block and when the jib is supported by the jib rest.

Description

technical field [0001] The present invention relates to lift vessels. Such lift vessels including one or more slewing cranes have been in commercial use for decades. An example is shown in EP 1765717 of the applicant. Background technique [0002] Typically, the main lifting gear on such ships is designed to lift the heaviest loads, with auxiliary cranes and often provided so-called jib cranes adapted to carry smaller loads. In daily practice on such a lift vessel, the operation of the crane a significant amount of the time is for raising and lowering smaller loads which can be handled by auxiliary cranes or jib cranes. During this operation, the main lifting tackle is suspended from the jib and is not used. The main crane lower block is pulled upward so that the main crane lower block approaches the main crane upper block and is fixed there. In lift ships the main crane lower block is often used for extreme loads, so that the total weight of the main lower block includi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66C23/52B66C23/62B66C23/82B66C23/60
CPCB66C23/52B66C23/82B66C23/62B66C23/605
Inventor J·鲁登伯格T·C·J·M·斯蒂恩曼H·J·韦特林斯
Owner ITREC BV