1. Control the working temperature of the hydraulic oil of the lifting cargo elevator. Too high working temperature of the hydraulic oil is harmful to the working elements of the hydraulic system, and will accelerate the oxidation of the hydraulic oil. The working temperature of the hydraulic system of general machinery is controlled below 65 ℃, and the working temperature of the hydraulic system of construction machinery is controlled below 80 ℃. The control of the working temperature of hydraulic oil mainly refers to the control of the cooler performance of the hydraulic system, the reasonable control of the hydraulic oil quantity of the whole hydraulic system, and the control of the load and speed of the components of the hydraulic system.

2、升降货梯元件和系统在加工和装配过程中进行清洁，元件在加工制造中，每一工序都必须对加工中残留的污染物进行净化;元件装配前必须进行清洁处理，装配后必须进行严格的清洁和检验；油箱和管道在去除毛刺、焊渣等污染物后，需进行酸洗以去除其表面氧化物；对初装好的液压系统作循环冲洗，并定时从系统中取样分析，循环冲洗直系统清洁达到要求。

2. The elevator components and systems shall be cleaned during the processing and assembly process. During the processing and manufacturing of components, each process must purify and remove the residual pollutants in the processing; Components must be cleaned before assembly, and strictly cleaned and inspected after assembly; After removing pollutants such as burr and welding slag, oil tank and pipeline shall be pickled to remove surface oxides; Carry out circulating flushing for the initially installed hydraulic system, and regularly take samples from the system for analysis until the system is cleaned to meet the requirements.

3、防止升降货梯污染物混入液压系统，油箱要合理密封并装设能的空气滤清器以防止尘土、水分的进入；注入新油必须经过有效的过滤，系统的回油也应进行有效的过滤；管路接头等连接处密封严密，防止尘土、水分和空气进入液压系统；活动件必须装有防尘密封装置。

3. To prevent the pollutants from the elevator from entering the hydraulic system, the oil tank should be properly sealed and equipped with a high efficiency air filter to prevent the entry of dust and water; The new oil must be filtered effectively, and the return oil of the system should also be filtered effectively; The joints of pipeline joints and other parts shall be tightly sealed to prevent dust, moisture and air from entering the hydraulic system; The moving parts must be equipped with dustproof sealing device.

4、升降货梯液压油的过滤和净化，液压油过滤器是液压系统中控制油液污染的重要元件，滤油器的应用必须保证过滤精度符合系统的使用要求，由流体阻力引起的压力损失应尽可能小，并应具有足够的油垢容量；定时对滤油器进行检查和净化。液压系统油液的污染度随着外界污染颗粒侵入率和系统内各种磨损颗粒数的增加而增大，随着过滤比的增大而减小，因此合理选择过滤比可有效地降低系统的污染度。固体颗粒是工程机械液压系统污染的主要来源，通过合理选择滤油器的过滤比是控制系统污染的主要措施。

4. For the filtration and purification of the hydraulic oil of the elevator, the hydraulic oil filter is an important element in the hydraulic system to control the oil pollution. The application of the oil filter must ensure that the filtration accuracy meets the requirements of the system. The pressure loss caused by the fluid resistance should be as small as possible and should have sufficient oil scale capacity; Regularly inspect and purify the oil filter. The pollution degree of the hydraulic system oil increases with the increase of the invasion rate of external pollution particles and the number of various wear particles in the system, and decreases with the increase of the filtration ratio. Therefore, a reasonable selection of filtration ratio can effectively reduce the pollution degree of the system. Solid particles are the main source of pollution in the hydraulic system of construction machinery, and the main measure to control the system pollution is to reasonably select the filter ratio of the oil filter.

5、定期检查和更换升降货梯液压油，液压油在使用过程中，污染物的侵入会对液压系统造成不良的影响，要对液压油污染进行有效的控制，必须定期对各密封处、接头处进行检查处理，对液压系统的液压油进行检查分析，还要定期更换液压油。更换液压油时必须将旧液压油放净，整个液压系统必须先清洁后，再注入新的液压油。

5. Regularly check and replace the hydraulic oil of the elevator. During the use of the hydraulic oil, the invasion of pollutants will have a negative impact on the hydraulic system. To effectively control the hydraulic oil pollution, it is necessary to regularly check and handle the seals and joints, check and analyze the hydraulic oil of the hydraulic system, and regularly replace the hydraulic oil. The old hydraulic oil must be drained when replacing the hydraulic oil. The entire hydraulic system must be cleaned before injecting new hydraulic oil.

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The above wonderful contents are recommended for reading by the electro-hydraulic cargo elevator. If you want to know more useful knowledge, please click: http://www.qingfeijixie.cn 。