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Telescopic mast and self-deploying and collapsing tower crane including the telescopic mast

A folding tower type and automatic unfolding technology, which can be used in the field of elevating cantilever cranes, telescopic masts, and tower cranes, and can solve the problems of complex design and manufacture of telescopic masts.

Active Publication Date: 2019-11-05
MANITOWOC CRANE GROUP FRANCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this solution complicates the design and manufacture of telescoping masts

Method used

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  • Telescopic mast and self-deploying and collapsing tower crane including the telescopic mast
  • Telescopic mast and self-deploying and collapsing tower crane including the telescopic mast
  • Telescopic mast and self-deploying and collapsing tower crane including the telescopic mast

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0092] figure 1 , figure 2 with image 3 An automatically deploying and collapsing tower crane 100 comprising a jib 102 and a telescoping mast 1 is shown. Figure 4 to Figure 12 A telescoping mast 1 is shown.

[0093] The telescoping mast 1 comprises a first mast part 10 and a second mast part 20 . The first mast section 10 has a generally tubular shape consisting of flat metal sheets 12 welded and folded to form two half-shells. The second mast section 20 has a generally tubular shape consisting of flat metal sheets 22 which are welded and folded to form two half-shells.

[0094] The first mast part 10 and the second mast part 20 are configured such that the first mast part 10 can slide in the second mast part 20 along the longitudinal axis Z10 when the tower crane 100 is unfolded or folded. The cross-section of the second mast part is larger than the cross-section 20 of the first mast part 10 so that the first mast part 10 can slide in the second mast part 20 .

[009...

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PUM

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Abstract

The invention discloses a telescopic mast comprising a first sliding mast portion (10) and a second sliding mast portion (20). The first mast portion and the second mast portion have a polygonal cross section comprising at least eight faces. The first mast portion and the second mast portion include at least two main support members and at least two auxiliary support members positioned correspondingly in the two regions separated by the intermediate fiber plane (P31). The main support members and the auxiliary support members transmit the torsional force. The polygonal shape of the cross section of the first mast portion and the second mast portion is configured such that the two main support members transmit the two main forces (F11) generated by the bending and converge at the main crossing point (P11), the two auxiliary supports The component transmits two auxiliary forces (F21) generated by bending and coincides with the auxiliary cross point (P21) away from the main crossing point (P11). The two auxiliary support members transmit the two auxiliary forces (F21) generated by the bending and converge at the auxiliary crossing (P21) away from the main crossing point (P11).

Description

technical field [0001] The present invention relates to telescoping masts for forming automatically unfolding and collapsing tower cranes. Furthermore, the invention relates to an automatically unfolding and collapsing tower crane comprising such a telescoping mast. [0002] The invention is applied to the field of automatically unfolding and folding cantilever cranes. The invention can be applied to several types of automatically deploying and collapsing cranes, for example to dispenser jib cranes and to liftable jib cranes. Background technique [0003] EP0855361A1 describes a telescoping mast comprising a first mast part and a second mast part sliding inside each other. The first and second mast sections each have a cross-section in the shape of a polygon with eight sides. The first mast section and the second mast section respectively include four main support members and four auxiliary support members positioned on either side of the median fiber plane of the first m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66C23/60B66C23/683
CPCB66C23/60B66C23/68B66C23/342
Inventor 珍-保罗·维尔肖法布里斯·托马斯
Owner MANITOWOC CRANE GROUP FRANCE
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