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Excavator boom and excavator

An excavator and cantilever technology, which is applied in the field of excavator cantilever and excavator, can solve the problems of inflexible design scheme of connection part, complicated structural design of connecting parts, increase of total weight of cantilever, etc., and achieves simple structure, small weight and reasonable cost Effect

Active Publication Date: 2019-03-22
LIEBHERR FRANCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the solutions disclosed therein have in common that the structural design of the connectors used is complex
This not only increases the resulting production costs, but also increases the overall weight of the boom, the design of the connection between the boom parts is also relatively inflexible, especially with regard to the desired mutual angle of the two boom parts

Method used

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

Examples

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Embodiment Construction

[0023] figure 1 The perspective side view of is showing 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 34 for movably mounting an attachment or boom extension (not shown here) is provided on the front boom part. The rear boom part 12 comprises corresponding bearings 16 on the end side in order to be able to pivotally articulate the rear boom part to the excavator upper or lower bracket.

[0024] Both the rear and front cantilever parts can be made as a monolithic body. However, it is also possible for the boom parts 11 , 12 to be combined from individual elements.

[0025] The two cantilever parts 11, 12 have a box-like structure obtained by welding together the respective side plates. The individual side panels 11a to 11d or 12a to 12d are welded to one another by a fillet welding method.

[0026] The connection between the two boom parts 1...

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Abstract

The invention relates to a boom for an earth-moving machine, in particular an excavator, comprising rear and front boom parts that are cohesively assembled to form a boomerang-like boom structure, wherein the central connection between the boom parts is formed by a simple thick central connecting plate.

Description

technical field [0001] The invention relates to a cantilever used for engineering machinery, especially an excavator, which is composed of a rear cantilever part and a front cantilever part, and the rear cantilever part and the front cantilever part are materially combined to form a boomerang-shaped cantilever structure. Background technique [0002] Cantilever forms of this type are already known from the prior art. In order to construct this type of cantilever structure, the front cantilever box is usually connected to the rear cantilever box by means of special connecting elements. For example, see US Patent No. US 4,069,637. A corresponding production method is known from US 6,637,111 B2. Common to the solutions disclosed therein, however, is the structurally complex design of the connectors used. This not only increases the resulting production costs, but also increases the overall weight of the boom, and the design of the connection between the boom parts is also re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02F3/38E02F3/28
CPCE02F3/28E02F3/38Y10T29/49622E02F3/382E02F9/0825
Inventor G·埃贝尔J·普莱梅尔丁T·穆施
Owner LIEBHERR FRANCE