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我单位是一家桥梁施工建筑单位。在多年的混凝土搅拌车的使用与维修实践中，发现搅拌滚筒托轮损坏的频率很高，使用寿命较短，经拆洗，更换轴承，重新加注润滑油等一般维修保养程序后，情况并没有得到进一步的改善。其普遍表现为：现场重新使用没多久，该部位发出异响，滚轮卡
My unit is a bridge construction and building units. In many years of practice of using and maintaining concrete mixers, it is found that there is a high frequency of damage to the supporting rollers of the mixing roller and a short service life. After the general maintenance procedures such as disassembling, replacing the bearings and refilling the lubricating oil, Be further improved. It is generally manifested as: site did not take long to re-use, the site issued abnormal sound, wheel card