Boom element, telescopic boom and construction vehicle

A telescopic boom technology, which is applied in telescopic joints or telescopic boom hinges, engineering vehicles, and telescopic booms, can solve problems such as boom weight, reduce production costs, ensure quality, and lighten the structure. Effect

Active Publication Date: 2012-05-09
LIEBHERR WERK EHINGEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Based on the requirement to provide very large boom systems with l

Method used

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  • Boom element, telescopic boom and construction vehicle
  • Boom element, telescopic boom and construction vehicle
  • Boom element, telescopic boom and construction vehicle

Examples

Experimental program
Comparison scheme
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Example Embodiment

[0053] figure 1 Shows a schematic front view of a part of a telescopic boom according to the invention, where two telescopic sections 1 and 2 are shown here. As can be from figure 1 As seen in, a shell-shaped corner rod 20 is used in each telescopic section 1, 2, 3, 4.

[0054] The corner rod 20 can be made folded, curved, made of tubular sections or even extruded profiles. The corner rods 20 are connected by truss rods 21. These truss rods are at right angles to the corner rods 20 (called zero-position rods) or / and also at another angle with respect to the corner rods 20 (called diagonal rods). 地Layout.

[0055] Each truss rod 21 can also be made of a welded structure composed of four plates, just like figure 2 As shown in. figure 2 Shows from figure 1 The cross-sectional view A-A. The resistance moment Wx around the X axis x is as large as the resistance moment Wy around the Y axis y, and is equivalent to a circular pipe section. Thus, a tubular truss rod 21 was simulated, an...

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Abstract

The present invention relates to a boom element for a telescopic boom, particularly a telescopic shot or a telescopic boom base section, wherein the boom element has cupped corner pieces and lattice bars, and the cupped corner pieces are interconnected by means of the lattice bars, wherein the lattice bars are arranged in a framework, at a right angle with respect to the corner pieces, and/or at an angle different from a right angle, particularly at an acute or obtuse angle, with respect to the corner pieces, and the corner pieces and the lattice bars form a substantially box-shaped hollow structure.

Description

technical field [0001] The invention relates to a boom element for a telescopic boom, in particular a telescopic joint or a telescopic boom joint, a telescopic boom and a construction vehicle. Background technique [0002] In wind power plants, it is simultaneously desired to have a high hub height of the wind rotor in order to obtain as uniform a wind force as possible on the rotor blades. The maximum achievable hub height is therefore a characteristic value for the required lifting devices, generally mobile cranes with telescopic booms, when installing wind power plants. [0003] Based on the requirement to provide very large boom systems with long booms, the problem arises that conventional telescopic booms are too heavy. However, a telescopic boom has the advantage over a boom made of normal lattice elements that it can be quickly transferred from the transport position to the working position and requires much less space for installation. Another important advantage l...

Claims

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Application Information

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IPC IPC(8): B66C23/687B66C23/70
CPCB66C23/72B66C23/707
Inventor 汉斯-迪特尔·威廉
Owner LIEBHERR WERK EHINGEN
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