(1) Hydraulic oil filter: after the operation of the mixing machine, the hydraulic oil filter of the mixing machine should be checked and cleaned in time. If the hydraulic oil filter is damaged, it should be replaced in time to avoid greater hardware loss. In the process of oil injection, a 120 mesh filter is needed for filtering. After a long time of use, the mixing machine gradually appears problems such as reduced lubricity, blockage, cavitation and so on. It is necessary to check, inject and replace the hydraulic oil in time.

(2)液压油黏度：当液压系统瘫痪、不工作等故障出现，要及时的调整液压油的黏度。黏度过高将损耗液压油液的动能；黏度过低将增加泄漏液压油液、温度升高。

(2) Hydraulic oil viscosity: when the hydraulic system is paralyzed, does not work and other failures occur, to timely adjust the viscosity of the hydraulic oil. If the viscosity is too high, the kinetic energy of the hydraulic fluid will be lost; If the viscosity is too low, the leakage of hydraulic fluid will increase and the temperature will increase.

(3)油箱的液压油应该处于正常的液面位置，确保回油管以及吸油过滤器处于液面位置以下的位置，防止在油路回油过程中有空气进入到油泵内。吸油滤清器应该定期的进行检查，如果出现了堵塞的现象应该及时进行清理，防止发生空蚀。

(3) The hydraulic oil in the oil tank should be at the normal liquid level to ensure that the oil return pipe and oil suction filter are below the liquid level to prevent air from entering the oil pump during the oil return process. The oil suction filter should be checked regularly. If it is blocked, it should be cleaned in time to prevent cavitation.

搅拌机械是路桥施工作业中，重要的工程机械。对于建设施工领域的应用十分广泛，对保证建设、质量、进度有极其重要的影响。及时检查路桥施工中的搅拌机械运行状况，查找故障、问题的根源进行，才能预防问题的发生，避免在设备维护、维修等方面的资金投入。建立完整的搅拌机械设备检查管理模式，定时保养搅拌机械，杜绝问题的萌生。

Mixing machinery is an important engineering machinery in road and bridge construction. It is widely used in the field of construction, and has an extremely important impact on ensuring the construction safety, quality and progress. In order to prevent the occurrence of problems and avoid capital investment in equipment maintenance, repair and other aspects, it is necessary to check the operation status of mixing machinery in road and bridge construction in time and find out the root causes of faults and problems. Establish a complete mixing machinery and equipment inspection management mode, regular maintenance of mixing machinery, to eliminate the emergence of problems.

根据不同的故障情况，选择合理、有效的维护方法，才能让搅拌机械运转投人路桥施工作业中，同时也提高了搅拌机械的使用寿命，减低风险、加大施工进程.确保施工质量、避免不必要的资金支出。

According to different fault conditions, reasonable and effective maintenance methods can be selected so that the mixing machinery can be put into the road and bridge construction operation. At the same time, the service life of the mixing machinery can be improved, the safety risk can be reduced, the construction process can be increased, the construction quality can be ensured, and unnecessary capital expenditure can be avoided.

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