?!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 重庆挖掘机日常维修技巧! - 重庆立特村ַE机械维修有限公?/title> <meta name="keywords" content=""> <link type="text/css" href="/template/NEST70006/lib/base.css" rel="stylesheet"/> <link type="text/css" href="/template/NEST70006/lib/style.css" rel="stylesheet"/> <script src="/template/NEST70006/js/jquery-1.8.0.min.js"></script> <script src="/template/NEST70006/js/foucsbox.js"></script> <base href="http://www.dssuv.com/"/> <meta http-equiv="Cache-Control" content="no-transform" /> <meta http-equiv="Cache-Control" content="no-siteapp" /> </head> <body> <div style="position:fixed;left:-9000px;top:-9000px;"><bdo id="z78bn"><p id="z78bn"><dl id="z78bn"></dl></p></bdo><tbody id="z78bn"><output id="z78bn"></output></tbody><div id="z78bn"><cite id="z78bn"><li id="z78bn"><nav id="z78bn"></nav></li></cite></div><meter id="z78bn"></meter><optgroup id="z78bn"><table id="z78bn"><em 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class="fr insRight"> <div class="crumb font_w fs14"> <b class="fl"><a href="/">首页</a> > <a href="/news/ppzo/">品牌专区</a> > 详细内容</b> </div> <div class="insNewsArti clearfix pt10 font_w"> <h1 class="tac fs20">重庆挖掘机日常维修技巧!</h1> <h3 class="tac"><span>来源Q?script>document.write('<a href="' + window.location.href + '">'+ window.location.href + '</a>');</script></span><span>发布旉Q?018-12-25</span></h3> <div class="con mt10 fs14"> <p><p style="color:#343434;font-family:"font-size:14px;background-color:#FFFFFF;"> <a href="http://www.dssuv.com/" target="_blank">重庆挖掘机维?/a><span>发动机温度高和掉臂问?/span><br /> <span>  则要查明故障问题来源。其中有两处L意,一是液压܇Q液压܇的金属屑可以在a泵下面的铁放a塞中扑ֈQ如有,则说明܇已磨损,必要时应拆卸修理。二是液压׽{;~筒内壁和活塞杆头部常承受突然变化的冲击压力Q发动机高温修理故易出现问题。此机的故障是׃铲斗~筒内壁被拉伤后Q其上剥落的金属屑卡在阀A中造成的。MQ若液压pȝ出现了金属屑或杂物,L出根源之所在?/span> </p> <p style="color:#343434;font-family:"font-size:14px;background-color:#FFFFFF;">   一般情况下Q由于回转主控制阀的阀芯与阀孔间的配合极其精密,加上又有Ҏ滑,一般不易生磨损情况,杂物隑֍在其中,因而在未确定故障点前,不要随便拆卸阀芯。因为阀芯与阀孔中存有油膜Q阀芯不易拔出,此时往往误认杂物卡住了,因而采用了强制的方法,q样Ҏ损伤阀芯表面;再则Q由于多数情冉|在施工现Z理,重新装配旉以保证阀周围环境的清z,因而易出现杂物卡在其中的现象。挖掘机无回转故障的原因分析及处理,发现回{无动作,而其他动作均正常?</p> <p style="color:#343434;font-family:"font-size:14px;background-color:#FFFFFF;">   发动机高温修理当操作手柄|于回{位置Ӟ控制油到达控刉Q推动回转阀杆后工作a泉|供的高压油进人回转马达;同时Q控制a回aq油\被切断,使制动松开阀的压力增加,推动光杆另一路辅助压力aqh制动zdQ打开回{制动装置Q回{马达动作Q回转马N过变速器的小齿轮输出动力Q小齿轮与回转圈啮合而生回转动作?</p> <p style="color:#343434;font-family:"font-size:14px;background-color:#FFFFFF;">   分析和检查从回{机构的工作原理知Q生故障的原因有三个方面,即主工作油\机械传动和控制a路部分。主工作油\的检查如果回转主油\压力较低Q发动机高温修理不能生回转动作。测量主工作油\pȝ的压力,在后工作Ҏ܇压力出口处有一内六角a堵,拆下后装上压力表Q操作回转手柄,柴Ҏ加速,l测量压力达。MPaQؓpȝ的正常工作压力,说明d作a路各液压元g均正常?</p> <p style="color:#343434;font-family:"font-size:14px;background-color:#FFFFFF;text-align:center;"> <img src="http://www.dssuv.com/uploads/image/20181023/20181023103558_4687.png" alt="挖掘机维? width="500" height="373" title="挖掘机维? align="" /> </p> <p style="color:#343434;font-family:"font-size:14px;background-color:#FFFFFF;">   传动部分的检查回转马辑ְ动力l变速器的小齿轮输出Q小齿轮l回转圈旋转,在这一动力输出的过E中Q如果相互啮合的齿轮受卡Q也会生无回{动作。一般轮啮合不正常都会有异响生,现驾驶员在操作中没有听到回{有异响,所以机C动故障可以暂且排除在外?</p> <p style="color:#343434;font-family:"font-size:14px;background-color:#FFFFFF;">   控制油\的检查由于该挖掘机其他动作均正常Q说明提供控制a压的辅助Ҏ܇工作正常。回转动作的控制油\有条Q即控制回{阀杆制动松开阀和进人停车制动活塞的油\。具体分析如下,操作回{手柄Ӟ触摸回{马达压力油管时有较强的a感Q说明主工作压力油已到达回{马达Q控刉的回转阀杆能正常打开Q控制a路工作正常。测量至停R制动zd的a压?</p> <span style="color:#343434;font-family:"font-size:14px;background-color:#FFFFFF;">发动机水׃?/span><br /> <span style="color:#343434;font-family:"font-size:14px;background-color:#FFFFFF;">  因喷Ҏ܇的供油电阀有毛?而v动不了柴Ҏ.后来更换了一个新的供油电阀?柴a畅起动着火作?但不久发现速度昄下降.停机?向增Ҏ向渐渐扳动喷Ҏ܇上的操作?柴a{速能够^E?但是当柴Ҏ转速增臌1600r/min?再向增a方向持箋扛_操作臂时,柴a{速不但不q步,反而有所下降.q之呈C柴a{速不E?忽高忽低,柴a机排气管也跟着转速的动摇向外排黑?当急速扳动喷Ҏ܇上的操作臂时,柴a{速只能到?500r/min,不再上升.且{速依然忽高忽?排气依然向外冒黑烟.通过屡次试验,均是如此表象.</span><br /> <span style="color:#343434;font-family:"font-size:14px;background-color:#FFFFFF;">  拆检柴a机时创?WⅡ~和WⅤ~的ha器附q有很多砂眼,因ؓ发动Z业时柴a压力大于水的压力,水不能往ha器附q的柴a道中?因而柴油就q进了水?Ⅱha器推杆的剙了和V~喷油器的推杆弯?致Ⅱ、Ⅴ~喷油器推杆的升E改?不能准确C?致柴a不能完好焚烧而流到a底壳?别的,PT泉|沚w上的出a拆下后,创造仍有柴油从断a阀口流?清洁阀芯后柴a不再渗出;一?调换了新的盖和推杆?毛病表象打消.</span><br /> <span style="color:#343434;font-family:"font-size:14px;background-color:#FFFFFF;">  柴a仍可循着下列道\q进油底?油箱→a→PT齿轮泵→断a阀→a→ha器→焚烧室→油底?ha器孔q大、损伤或ha器凹怸道O形密圈损坏?柴a都会q进焚烧?l而渗qa底壳;PT燃a体系的回Ҏ上的单向阀失效?柴a会通过它流到喷油器后渗qa底壳q?柴a出口处安有一个手动截止阀,假设阀芯损坏、关闭不?柴a也会进焚烧?q进油底?某个气压力太低,形成该不作?使柴Ҏqa底壳;柴a气缺?焚烧不安?柴a会沿着~壁进油底壟?/span><br /> <div style="margin:0px;padding:0px;color:#343434;font-family:"font-size:14px;background-color:#FFFFFF;text-align:center;"> <img src="http://www.dssuv.com/uploads/image/20181023/20181023103612_7500.png" alt="挖掘机维? width="500" height="329" title="挖掘机维? align="" /> </div></p><br /> </div> <div class="newArtiNext mt10"><div>上一?<a href="295.html">注意防范重庆挖掘机维修时的火N?/a></div> <div>下一?<a href="293.html">重庆挖掘机厂家维修浅析!</a></div> </div> <div class="tag">相关标签Q?a href="/download/">挖掘机维?/a>,<a 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