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吊车百事通 | 吊车维修，二手吊车 | dcbst.com Reviews
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长沙弘安科技有限公司_长沙弘安科技有限公司官方网站_中联吊车电脑(浦沅吊车电脑)徐工吊车电脑维修安装价格咨询电话
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吊臂爬行现象如何诊断是伸缩机构故障还是液压系统故障？ – 吊车百事通
http://www.dcbst.com/651
3)吊臂爬行,一般指上升时(出臂)连续抖动,或者,时动时不动,造成爬行,如果是连续抖动,一般同时吊臂内出现异响,属于机械问题,吊臂变形或者吊臂装配过紧,油缸内活塞与缸过紧,产生的抖动也将产生异响,但明显声音不同,时动时不动,此种现象的原因,一般是液压系统的故障引起的，主要原因还是油路有空气.
一台变幅起升没有动作(其他动作均没有)的车,你会如何排查,并解决此故障? – 吊车百事通
http://www.dcbst.com/642
1) 首先，要排查上车是否有电,检查保险笔是否正常,确保上车的电源.再检测30公斤的控制油路是否有恒定的压力,接着再检测主阀的压力是否正常,检测溢流阀及从溢流阀是否正常.再检测阀片的中位是否正常,可调整阀片前后的调整螺旋来试.检测平衡阀是否内泄或卡死,拆开平衡阀清洗,检查管路的油路是否畅通,拆开管子喷油检测.然后检测主阀后放换向电磁发是否有点或卡死,操纵手柄是否有电供给换向电磁阀.再检测PLC的输出是否正常,检测PLC数值及供给电压是否正常，最后再检测变幅油缸是否存在内泄,拆开油岗检测密封封件是否完整。
吊臂 – 吊车百事通
http://www.dcbst.com/category/dcwx/db
3)如果是油缸原因引起,那么此时,吊臂伸出的压力偏大,甚至到拼压阶段附近抖动,吊臂自身的原因是油压一般不需很大,但压力同样会抖动,此时用螺丝刀听吊臂就会明白. 3)吊臂爬行,一般指上升时(出臂)连续抖动,或者,时动时不动,造成爬行,如果是连续抖动,一般同时吊臂内出现异响,属于机械问题,吊臂变形或者吊臂装配过紧,油缸内活塞与缸过紧,产生的抖动也将产生异响,但明显声音不同,时动时不动,此种现象的原因,一般是液压系统的故障引起的，主要原因还是油路有空气. 2 动力元件 135 油泵。 控制元件 伸缩平衡阀 、伸缩平衡阀 、电液先导换向阀、三通压力补偿阀、次级溢流阀、减压阀、背压阀、泄荷阀、伸缩选择换向阀。 Y4a电磁阀得电后，有减压阀产生的3Mpa先导压力油流经该电磁阀后推动主阀芯往左运动，液压油从P口 经过换向阀到主阀A4口 伸缩选择阀上位 伸缩平衡阀 ，压力逐步建立起来，同时工作压力通过主阀上的XL油路反馈给负载反馈变量泵控制油泵的排量，迅速建立起所需的工作压力后打开伸缩平衡阀内单向阀，压力油到达伸缩油缸 无杆腔，推动伸缩油缸 活塞杆往外伸出。
遇到一台变幅起升和下降速度慢的车，你如何排查，并解决此故障？ – 吊车百事通
http://www.dcbst.com/659
变幅 – 吊车百事通
http://www.dcbst.com/category/dcwx/bf
1) 首先，要排查上车是否有电,检查保险笔是否正常,确保上车的电源.再检测30公斤的控制油路是否有恒定的压力,接着再检测主阀的压力是否正常,检测溢流阀及从溢流阀是否正常.再检测阀片的中位是否正常,可调整阀片前后的调整螺旋来试.检测平衡阀是否内泄或卡死,拆开平衡阀清洗,检查管路的油路是否畅通,拆开管子喷油检测.然后检测主阀后放换向电磁发是否有点或卡死,操纵手柄是否有电供给换向电磁阀.再检测PLC的输出是否正常,检测PLC数值及供给电压是否正常，最后再检测变幅油缸是否存在内泄,拆开油岗检测密封封件是否完整。 2 动力元件 135 油泵。
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吊车百事通 | 吊车维修，二手吊车
本稿由长沙弘安科技有限公司(http:/ www.changshahongan.com)投稿 由于液晶显示器的特性，市面上偶尔会发现 老古董 力矩限制器花屏的现象，主要表现为以下三种形式 图一的主要特征是很多横向的细实线，犹如斑马. 本稿由中联重科维修工程师汪工投稿 电话 15526422277 ，更多维修与配件问题可以直接联系汪工。 1、支腿液压系统 A 原理 当下部操纵阀总换向阀处于中位时，从定量泵来的油通过V口，再经过中回给上车供油。 潍柴动力国 III 柴油 机闪码表. 共轨系统对油路 包括低压油路和高压油路 要求较高，很多问题都是由油路问题引起的 其次，整车线束问题也是主要的故障源。 例如故障码为 124 定义为 离合器行程信号错误。 汽车起重机25吨到55吨上车出现的常见故障之一 故障现象 1. 上车在怠速时回转和主副卷扬都没动作。 根据发动机表现出的转速，出现的问题可以总结为以下几种情况 一、 发动机转速恒为1000 此时说明下车油门踏板存在问题，从踏板接线方面进行排除，确认线路无误之后可以判断是踏板坏掉。 拆吊臂前准备工作 第一步 用起重起把副臂卸下,拆下臂端单滑轮。
Index of /
In the manufacture of all types of Agricultural Buildings to BS 5502 Class 2 and Industrial Buildings to BS 5950 consisting of:. RSJ or Universal Beam Columns and Portal Frames. Steel Galvanised Purlins or RST Tanalised Timbers. PVC Steel Coated Sheets. PVC Gutter and Fall Pipes. Fibre Cement Roof Sheets and Side Cladding or Yorkshire Boards. ANY TYPE OF SIZE BUILDING SUPPLIED IN KIT FORM. 2008 Simplified Networking Ltd.
Index of /
In the manufacture of all types of Agricultural Buildings to BS 5502 Class 2 and Industrial Buildings to BS 5950 consisting of:. RSJ or Universal Beam Columns and Portal Frames. Steel Galvanised Purlins or RST Tanalised Timbers. PVC Steel Coated Sheets. PVC Gutter and Fall Pipes. Fibre Cement Roof Sheets and Side Cladding or Yorkshire Boards. ANY TYPE OF SIZE BUILDING SUPPLIED IN KIT FORM. 2008 Simplified Networking Ltd.
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