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Excavator noise reduction boom and excavator

A technology for excavators and booms is applied in the field of excavators to achieve the effect of reducing the cost of the whole machine, large noise reduction and good noise reduction effect.

Active Publication Date: 2017-02-01
LIUZHOU LIUGONG EXCAVATORS +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to solve the shortcomings of the existing excavator using a special muffler, to provide an excavator sound-absorbing boom with a muffler function and an excavator with the noise-absorbing boom

Method used

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  • Excavator noise reduction boom and excavator
  • Excavator noise reduction boom and excavator

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Embodiment Construction

[0021] The specific implementation will be described below in conjunction with the accompanying drawings.

[0022] Such as figure 1 As shown, the sound-absorbing boom of the excavator is similar in external shape to the boom of the transmission excavator. Both the front end and the rear end of the box structure are hinged ends, and the first partition 3, the second partition 4, and the third partition 5 are sequentially arranged in the box structure to connect the inner cavity of the box structure 2 from the rear end to the front end. Separated into a resonant chamber 6, an air inlet chamber 7, an intermediate chamber 8 and an exhaust chamber 9 arranged in sequence. The box structure is provided with an air inlet 1 and an exhaust port 10, the air inlet 1 is used to introduce engine exhaust gas into the air intake cavity, and the exhaust port 10 communicates the exhaust cavity with the outer space of the box structure. On the first partition 3 between the air inlet chamber 7 ...

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Abstract

The invention relates to excavators and booms thereof and discloses a silenced boom of an excavator. The silenced boom of the excavator is used for overcoming disadvantages of the existing excavators that special silencers are used. The silenced boom of the excavator comprises a box body structure with an internal cavity, wherein both the front end and the rear end of the box body structure are hinged ends; partition plates which are used for partitioning the internal cavity into a plurality of chambers, which at least comprise an air intake chamber, a resonant chamber and an exhaust chamber, are arranged in the box body structure; an air intake port communicating with the air intake chamber and an exhaust port communicating with the exhaust chamber are formed in the box body structure; resonance throat tubes are arranged on the partition plate between the air intake chamber and the resonant chamber, and an exhaust passage exists from the air intake chamber to the exhaust chamber. Meanwhile, the invention further discloses the excavator with the boom. The silenced boom has the advantages of low exhaust resistance, good silencing effect, whole-machine cost reduction and mounting space saving and meanwhile has the advantage that the structural strength of the boom is improved.

Description

technical field [0001] The invention relates to an excavator arm, in particular to an excavator noise reduction boom with a muffler function and an excavator with the noise reduction boom. Background technique [0002] According to the "Report on the Prevention and Control of Environmental Noise Pollution in China" released in 2011, among the four major noise sources of traffic, industry, construction and life, construction noise ranks first with a proportion of 38.3%. construction machinery. With the continuous improvement of environmental noise requirements, my country's laws and regulations have become more and more strict on the noise control of construction machinery products, and the limits of external radiated noise and noise next to the driver's ears are decreasing year by year; the national phase II noise limit standard (2015 It will be implemented on January 1, 2014) which is 3 decibels lower than Phase I (January 1, 2012 to December 31, 2014), which brings great c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02F3/38
Inventor 俞松松蒋绍军樊顺科唐建国
Owner LIUZHOU LIUGONG EXCAVATORS
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