库拉米隧道312挖装机马达气穴现象分析

王丙超

doi:10.3973/j.issn.1672-741X.2015.S2.037

隧道建设 >

2015 , Vol. 35 >Issue S2: 205 - 208

DOI: https://doi.org/10.3973/j.issn.1672-741X.2015.S2.037

施工机械

库拉米隧道312挖装机马达气穴现象分析

王丙超

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（中铁隧道集团专用设备中心，河南洛阳 471009）

王丙超（1989—），男，河北衡水人，2013年毕业于石家庄铁道学院，机械设计制造及其自动化专业，本科，助理工程师，现从事大型设备施工管理工作。

收稿日期: 2015-05-07

修回日期: 2015-05-26

网络出版日期: 2015-12-24

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Analysis on Cavitation of 312 Backhoe Loader Motor’s Used in Kulami Tunnel

WANG Bingchao

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(Tunnelingdedicated Equipment Center, China Railway Tunnel Group Co., Ltd., Luoyang 471009, Henan, China)

Received date: 2015-05-07

Revised date: 2015-05-26

Online published: 2015-12-24

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摘要

现代工程机械如台车、挖装机、盾构等都大量采用了液压元件，在设备使用过程中液压元件会出现各种问题，气穴现象就是其中之一。通过对库拉米隧道312挖装机出渣槽输送液压马达损坏原因分析探究气穴现象。并以此为例，通过公式估算混入液压油中的气泡压力，再根据相关资料估算气泡爆炸产生的压力。以此故障分析说明气穴现象对液压元件的危害。最后对气穴现象产生的原因进行分析，并针对气穴产生的原因提出预防措施以防类似情况发生。

关键词： 挖装机; 液压马达; 故障分析; 气穴现象

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王丙超 . 库拉米隧道312挖装机马达气穴现象分析[J]. 隧道建设, 2015 , 35(S2) : 205 -208 . DOI: 10.3973/j.issn.1672-741X.2015.S2.037

Abstract

Hydraulic components have been used in a lot of advanced machines, such as trolley, backhoe loader, shield machine and so on. A wide variety of problems appear in the use of these machines gradually, and cavitation is one of these. In this paper, the causes for the damage of hydraulic deliver motor of 312 backhoe loader used in Kulami tunnel are analyzed. The air stress in the hydraulic oil is calculated by means of formula estimation, and the stress caused by the air exploding is calculated according to related data. In the end, the damage to the hydraulic components caused by cavitation and the causes of the cavitation are analyzed.

Key words： backhoe loader; hydraulic motor; failure analysis; cavitation

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