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Composite telescopic crane arm with metal ends on tubular segments and crane comprising said arm

A telescopic boom and crane technology, applied in the field of cranes and telescopic booms, to achieve the effect of reducing the overall weight

Inactive Publication Date: 2014-03-26
CIFA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is clear that this solution is not a crane developed for lifting heavy loads (in the several ton range) and does not provide any useful insight into obtaining jibs for the kind of crane in question

Method used

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  • Composite telescopic crane arm with metal ends on tubular segments and crane comprising said arm
  • Composite telescopic crane arm with metal ends on tubular segments and crane comprising said arm
  • Composite telescopic crane arm with metal ends on tubular segments and crane comprising said arm

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Embodiment Construction

[0062] With reference to the accompanying drawings, a telescopic jib according to the invention is indicated with numeral 10 and can be used in a crane for lifting loads (only in figure 1 shown schematically in ), for example in the field of architecture or construction.

[0063] The telescoping arm 10 includes a plurality of sections 12, 14, 16, one of which slides within the other, which can be extended linearly to assume an extended operating state, or one in a non-operating state or when the machine is stopped. Another inner retraction.

[0064] The segments 12, 14, 16 have a box-like cross-section, inside which are provided respective axial positioning seats 25, 27 to accommodate the segments in their retracted positions.

[0065] The reciprocating portions of the segments 12, 14, 16 are of cooperating shape and size so as to be able to be inserted axially into the respective axially locating bases 25, 27, in a generally telescoping configuration, when possible or desire...

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Abstract

A telescopic arm for cranes able to lift a load comprises a plurality of tubular segments (12, 14, 16) extendable with respect to each other. At least one of said segments (12, 14, 16) comprises a central part (22, 28, 34) based on composite material, and head (18, 24, 30) and tail (20, 26, 32) terminal ends at least partly made of metal having high mechanical characteristics of strength.

Description

technical field [0001] The invention relates to a telescopic boom for a crane and a crane comprising said boom. Background technique [0002] As we all know, a crane is a work vehicle used to lift heavy loads (in the several ton range), it usually consists of a truck on which is mounted a telescopic boom consisting of a number of movable sections, one of which can be moved inside another Slide back and forth. A hook or other lifting device is provided at the upper end of the wall to lift the load. [0003] The arm can be angularly oriented and telescopically lengthened to carry a hook or other lifting device to a desired distance and height. [0004] Usually the telescoping segments are made of metallic material, usually steel, and have a tubular shape with a cross-section of different shapes, for example rectangular, rectangular with rounded bottom, hexagonal or others. The end of each segment has a band-shaped reinforcing element which also acts as a stop in the inopera...

Claims

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Application Information

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IPC IPC(8): B66C23/70
CPCB66C23/701
Inventor 莫罗·马可·科特里尼斯特凡诺·费雷保罗·达里奥·迈尼
Owner CIFA
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