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Excavator boom and excavator

A technology of excavator and cantilever, which is applied in the field of excavator cantilever and excavator, can solve the problems of expensive and unfavorable cantilever total weight, and achieve the effect of reducing plate thickness, small material and time cost

Active Publication Date: 2022-07-12
LIEBHERR FRANCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this measure is expensive and leads to an unfavorable increase in the total jib weight

Method used

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  • Excavator boom and excavator
  • Excavator boom and excavator
  • Excavator boom and excavator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] figure 1 The three-dimensional side view of FIG. 1 shows the overall structure of the excavator boom 10 according to the present invention. The excavator boom 10 is composed of a front boom part 11 and a rear boom part 12 . A connection point 34 is provided on the front boom part for movably supporting accessories or boom extensions, not shown here. The rear boom part 12 includes corresponding bearing points 16 on the front side in order to enable the rear boom part to be pivotably articulated on the excavator upper or lower bracket.

[0020] Not only the rear cantilever part but also the front cantilever part can be made in one piece. However, it is also possible for the cantilever parts 11 , 12 to be combined from a single element.

[0021] The two cantilever parts 11 , 12 have a box-shaped structure, which is obtained by welding the respective side plates together. The individual side plates 11a to 11d or 12a to 12d are welded to each other by a fillet-welding me...

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PUM

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Abstract

The invention relates to a boom for a construction machine, in particular an excavator, which has at least two bearing plates for supporting a cylinder unit, which extend at least for the most part parallel to each other in the longitudinal direction of the boom, wherein the bearing The plate has end-side bends that extend outwardly toward the lateral edges of the cantilever.

Description

technical field [0001] The invention relates to a boom for a construction machine, in particular an excavator, having at least two support plates for supporting a cylinder unit, which extend at least for the most part parallel to each other in the longitudinal direction of the boom. Background technique [0002] Different cantilever structures have been known from the prior art for a long time. Also known are possible configurations of bearing locations for mounting a linear actuator, wherein, depending on the design, the bearing locations are designed in the form of two parallel extending bearing plates. Since the cantilever is subjected to relatively strong loads in the area where the actuator is mounted, the support plate is usually provided with additional stiffening plates and / or has a very large plate thickness. However, this measure is expensive and leads to a disadvantageous increase in the overall boom weight. SUMMARY OF THE INVENTION [0003] The purpose of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02F3/38E02F3/28
CPCE02F3/28E02F3/38E02F3/382E02F9/0825E02F9/125E02F9/14
Inventor G·埃贝尔T·穆施P·弗里奇
Owner LIEBHERR FRANCE