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Mechanical arm and excavator

A technology of mechanical arms and excavators, applied to mechanically driven excavators/dredgers, etc., can solve the problems of easy cracking of welds, achieve the effects of reducing cracking of welds, prolonging service life, and reducing force

Active Publication Date: 2021-07-02
ZOOMLION HEAVY IND CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of this invention is to provide a kind of mechanical arm, to solve the problem that the welding seam in the mechanical arm is easy to crack

Method used

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  • Mechanical arm and excavator
  • Mechanical arm and excavator
  • Mechanical arm and excavator

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Embodiment Construction

[0030] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0031] The present invention provides a mechanical arm, wherein the mechanical arm comprises a top plate 1, a side plate 2 and a bottom plate 3, one of the top plate 1 and the side plate 2 is provided with a first tooth 15, and the other A first hole 9 is provided, the first tooth 15 is inserted into the first hole 9 and welded to each other, one of the side plate 2 and the bottom plate 3 is provided with a second tooth 16, and the other is provided with a second holes 12, the second teeth 16 are inserted into the second holes 12 and welded to each other.

[0032] The mechanical arm (or arm) includes a top plate 1, a side plate 2 and a bottom plate 3, and the t...

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Abstract

The invention relates to the field of excavators, and discloses a mechanical arm and an excavator, wherein the mechanical arm comprises a top plate (1), side plates (2) and a bottom plate (3), one of the top plate (1) and the side plates (2) is provided with first teeth (15), the other one of the top plate (1) and the side plates (2) is provided with first holes (9), the first teeth (15) are inserted into the first holes (9), and the first teeth (15) and the first holes (9)are welded to each other; and the side plates (2) and the bottom plate (3) are provided with second teeth (16) and second holes (12) correspondingly, the second teeth (16) are inserted into the second holes (12), and the second teeth (16) and the second holes (12) are welded to each other. According to the scheme, the side plates are connected with the top plate and the bottom plate in the manner that the teeth are inserted into the holes and are welded to the holes, the holes can limit transverse movement of the teeth, transverse supporting of the holes to the teeth can replace welding seams to bear acting force borne by the mechanical arm, the acting force borne by the welding seams can be reduced, welding seam cracking is avoided or reduced, the overall strength of the mechanical arm is improved, and the service life is prolonged.

Description

technical field [0001] The invention relates to the field of excavators, in particular to a mechanical arm and an excavator. Background technique [0002] An excavator is an earth-moving machine that uses a bucket to excavate materials above or below the bearing surface, and loads them into transport vehicles or unloads them into stockyards. The stick is a workpiece of the excavator, usually also called the forearm, and its main function is to control the excavation and loading of the bucket. [0003] The excavator stick includes a box beam welded by the top plate, side plate, and bottom plate. Affected by the welding quality, with the use of the stick, the weld tends to crack, and there are bucket cylinder shaft holes and stick The lug plate of the cylinder shaft hole is subjected to great hydraulic pressure, and the weld at the bottom of the lug plate is more likely to crack. Contents of the invention [0004] The purpose of the present invention is to provide a mechan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02F3/28E02F3/34
CPCE02F3/28E02F3/34
Inventor 苏瑞杰王稳稳秦勇何骞
Owner ZOOMLION HEAVY IND CO LTD
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