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Double cantilever slewing base crane

A crane and slewing technology, applied in the direction of cranes, transportation and packaging, etc., can solve problems such as crane reachable range and maximum load limit, and achieve the effect of a wide range of positions

Active Publication Date: 2017-07-11
ITREC BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When further upgrading a double jib slewing pedestal crane to be able to lift even larger loads up to hundreds of tons, it was discovered that the use of hydraulic cylinders could create limitations in the reach and maximum load of the crane

Method used

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  • Double cantilever slewing base crane
  • Double cantilever slewing base crane
  • Double cantilever slewing base crane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0084] Figure 1-7 Various locations and details of a double boom slewing base crane according to two aspects of the present invention are shown in . Since all figures refer to the same embodiment, the same reference numerals are used in all figures.

[0085] figure 1 , 2 , 6 and 7 show the double boom slewing base crane 1 in its entirety. The double cantilever slewing base crane 1 according to both aspects of the present invention comprises a fixed base 2 adapted to be mounted to a vessel. The hoisting cable guide 21 described in the pending application NL 2009287 is provided on the base 2 .

[0086] The crane housing 3 is mounted to the base 2 and is adapted to swivel about a vertical swivel axis R relative to the base 2 . The shape of the crane housing 3 of this embodiment is a closed vertical column tapering towards the top. as figure 2 As can be seen, the central axis of the crane housing 3 extends at a small angle α of about 20° with respect to the vertical, so a...

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PUM

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Abstract

The present invention relates to a double jib slewing pedestal crane comprising a primary jib and a secondary jib and a secondary jib positioning device to support and position the secondary jib relative to the primary jib and to drive the pivotal movement of the secondary jib. The secondary boom positioning device includes a secondary boom positioning cable; a spoke structure secured to the secondary boom and extending radially outward; a zipper connected at one end to the secondary boom positioning cable and at the other end to the secondary boom and / or the spoke structure, wherein The spoke construction is suitable for supporting the zipper.

Description

technical field [0001] The present invention relates to a double cantilever slewing base crane, and the double cantilever slewing base crane comprises: [0002] - fixed base; [0003] - a crane housing mounted on the base and adapted to swivel about a vertical axis of rotation relative to the base; [0004] - a main boom comprising an outer end to which the boom shaft is pivotally connected and an opposite inner end, the inner end being pivotally connected to the crane about a first horizontal pivot axis The shell makes the main cantilever move up and down; [0005] a secondary cantilever, the secondary cantilever comprising an inner end pivotally connected to the cantilever shaft enabling pivotal movement of the secondary cantilever relative to the primary cantilever; [0006] - object suspension device to which objects can be connected; [0007] - a hoisting assembly comprising a hoisting winch and a corresponding hoisting cable. Background technique [0008] Conventi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66C23/52B66C23/64B66C23/66B66C23/82
CPCB66C23/52B66C23/64B66C23/66B66C23/82B66C23/62B66C2700/03
Inventor J·鲁登伯格H·J·维特林斯
Owner ITREC BV