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液压顶管机操作注意事项

发布时间:2020-01-08人气:

液压顶管机在非开挖工程中可以经常用到,但是液压顶管机在使用过程中存在着很多的安全隐患,所以施工人员要多多注意避免意外的发生,那液压顶管机在操作过程中有哪些注意事项呢?

顶管机

1.拆装

拆装顶管机(ji)的(de)(de)目的(de)(de)主要是为了停工(gong)后的(de)(de)转(zhuan)场(chang)、维修保养,并为新的(de)(de)施工(gong)任务做好准备(bei)。顶管机完成管道施工任务后,应把延伸轨道铺设好,用主项液压缸把旋转挖掘系统推出作业面到基坑处停放好。拆卸前,一定要搭建工作平台和防护拦杆,钢壳两侧圆形坡上还需安装踏板,以防工作人员从上面滑下来。

拆卸(xie)时,首先要把测(ce)量仪器(qi)的接线和(he)组装的零件拆下来,然(ran)后拆除旋转挖掘系统(tong)的总电缆和(he)容易(yi)损坏的传感器(qi)(如报警和(he)测(ce)量定位传感器(qi)等)。拆卸时一定要按电器拆装规范进行。在完,或上述拆卸工作后,应将旋转挖掘系统整体吊出基坑,拉运到检修地点。

顶管(guan)机其(qi)他工(gong)作(zuo)系(xi)统(tong)的(de)拆(chai)装,应(ying)当(dang)按照(zhao)不同系(xi)统(tong)如:主顶系(xi)统(tong)、土输送系(xi)统(tong)、注浆系(xi)统(tong)、电(dian)气系(xi)统(tong)等(deng)的(de)折(zhe)装要求(qiu)进(jin)行(xing)。

2.更换切削头

旋(xuan)转挖(wa)掘系统(tong)在每次拆卸时都要更换磨损严重超(chao)标的(de)(de)(de)(de)切(qie)削刀头(tou),并根据将要施工(gong)地层的(de)(de)(de)(de)土质(zhi)条件选择切(qie)削刀头(tou)的(de)(de)(de)(de)形(xing)状、材(cai)质(zhi),安排切(qie)削刀头(tou)的(de)(de)(de)(de)布(bu)置方(fang)式(shi)。切(qie)削刀头(tou)分(fen)为(wei)(wei)刀柄(bing)和刀尖2部分(fen),刀柄(bing)的(de)(de)(de)(de)材(cai)质(zhi)多(duo)为(wei)(wei)经过热处理的(de)(de)(de)(de)中(zhong)碳钢(gang)(gang),刀尖的(de)(de)(de)(de)材(cai)质(zhi)多(duo)为(wei)(wei)硬质(zhi)合金(jin)或工(gong)具钢(gang)(gang)。

在切削刀(dao)盘上除(chu)装设切削刀(dao)头(tou)外,还在超出切削刀(dao)盘直径的圆周方向设置了超挖刀(dao)、仿形刀(dao)等切削刀(dao)头(tou)。采用超挖刀的目的是减少旋转挖据系统外壳的磨损和提高操纵性,即减少顶管机的偏摆和推进阻力。缺点是增加了背衬水泥砂浆的灌注量。

顶管机

3.切削刀盘的维护修养

每次拆、装(zhuang)旋转挖掘系统时,都(dou)要(yao)检查(cha)、保(bao)养、修(xiu)理(li)切肖(xiao)刀盘(pan)的(de)土砂密封(feng)件,并做好(hao)各部(bu)轴承(cheng)的(de)润滑工作。为了防止土砂、泥水等侵入切削刀盘的轴承,在切削刀盘旋转轴与座孔之间装有数道士砂密封件及轴承润滑装置。土砂密封件的结构需要依据覆盖层深度、地下水压力、添加剂压力、工期长短、管道长度、密封件安装位置、密封层数及润滑方式等因素确定。

4.切削刀盘的扭矩检测

在对旋转挖掘系(xi)统完成大修或技术改造后,要对切削刀盘扭矩进(jin)行检(jian)测。切削刀盘的扭矩要根据地质条件以及旋转挖掘系统型式、构造和直径等因素确定。一般需要考虑以下几种要素;切削土壤、砾石等的切削阻力矩;切削刀盘与土壤的摩擦阻力矩;土砂的搅拌、提升阻力矩;轴承摩擦阻力矩;密封摩擦阻力矩;减速机的机械摩擦、传动等阻力矩。


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