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Crane having a collapsible jib

A technology of cranes, jibs, applied in the direction of cranes, etc., can solve problems such as damage, accident cranes, damage to the balance of the crane

Inactive Publication Date: 2019-08-02
LIEBHERR WERK BIBERACH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, this solution impairs the balance of the crane, with the result that a correspondingly set crane is no longer able to rotate sufficiently freely
This could in turn lead to accidents or damage to the crane

Method used

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  • Crane having a collapsible jib
  • Crane having a collapsible jib
  • Crane having a collapsible jib

Examples

Experimental program
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Effect test

Embodiment Construction

[0022] figure 1 A crane according to the invention is shown, designed as a rotating tower crane, comprising a tower 11 and a jib 9, wherein the jib 9 or the crane is shown in a working position. On the transmission platform 1 , an auxiliary support 4 is arranged between the jib holding support 2 and the adjustment rope winder 3 . The auxiliary support 4 is connected to the boom holding support 2 by tie rods 5 . In this case it is also possible to use a single tie rod 5 . The connection established by the tie rod 5 may be detachable, wherein a controllable actuator may be provided for separating and / or establishing the connection so that the connection can be manipulated or set by eg a remote control. The tie rod 5 may be permanently connected to the jib holding support 2 and releasably connected to the auxiliary support 4 or vice versa. The adjustment rope 7 slides between the auxiliary support 4 and the boom holding support 2 , and between the boom holding support 2 and th...

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PUM

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Abstract

The invention relates to a crane having a tower (11) and a jib (9), wherein the jib (9) lies against the tower (11) in an idle position of the crane and is fixed to the tower.

Description

technical field [0001] The invention relates to a crane comprising a tower and a jib, wherein the jib rests on and is secured to the tower when the crane is in an inoperative position. Background technique [0002] In the case of jib cranes known in the prior art comprising an adjustable jib, said jib may be arranged in a fixed position when not in use and the crane may for example freely rotate in a fixed position. This means that, in the event of a corresponding wind load, the crane boom or the wind can cause the boom to rotate in a specific wind direction. In this case the wind pushes the crane from the rear i.e. from the opposite ballast side or from the side opposite to the jib and the position the crane assumes corresponds substantially to figure 1 The location shown in . In this figure, therefore, the wind can act on the crane from the left. [0003] It is also known, for example, to use more than one crane on construction sites, where the distance between the cran...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66C23/26B66C23/36B66C23/34B66C23/16
CPCB66C23/16B66C23/26B66C23/342B66C23/36B66C23/68B66C23/92
Inventor 埃里克·科奈因
Owner LIEBHERR WERK BIBERACH
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