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、升降貨梯元件和系統(tǒng)在加工和裝配過程中進(jìn)行清潔，元件在加工制造中，每一工序都必須對(duì)加工中殘留的污染物進(jìn)行凈化;元件裝配前必須進(jìn)行清潔處理，裝配后必須進(jìn)行嚴(yán)格的清潔和檢驗(yàn)；油箱和管道在去除毛刺、焊渣等污染物后，需進(jìn)行酸洗以去除其表面氧化物；對(duì)初裝好的液壓系統(tǒng)作循環(huán)沖洗，并定時(shí)從系統(tǒng)中取樣分析，循環(huán)沖洗直系統(tǒng)清潔達(dá)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、防止升降貨梯污染物混入液壓系統(tǒng)，油箱要合理密封并裝設(shè)能的空氣濾清器以防止塵土、水分的進(jìn)入；注入新油必須經(jīng)過有效的過濾，系統(tǒng)的回油也應(yīng)進(jìn)行有效的過濾；管路接頭等連接處密封嚴(yán)密，防止塵土、水分和空氣進(jìn)入液壓系統(tǒng)；活動(dòng)件必須裝有防塵密封裝置。

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、升降貨梯液壓油的過濾和凈化，液壓油過濾器是液壓系統(tǒng)中控制油液污染的重要元件，濾油器的應(yīng)用必須保證過濾精度符合系統(tǒng)的使用要求，由流體阻力引起的壓力損失應(yīng)盡可能小，并應(yīng)具有足夠的油垢容量；定時(shí)對(duì)濾油器進(jìn)行檢查和凈化。液壓系統(tǒng)油液的污染度隨著外界污染顆粒侵入率和系統(tǒng)內(nèi)各種磨損顆粒數(shù)的增加而增大，隨著過濾比的增大而減小，因此合理選擇過濾比可有效地降低系統(tǒng)的污染度。固體顆粒是工程機(jī)械液壓系統(tǒng)污染的主要來源，通過合理選擇濾油器的過濾比是控制系統(tǒng)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、定期檢查和更換升降貨梯液壓油，液壓油在使用過程中，污染物的侵入會(huì)對(duì)液壓系統(tǒng)造成不良的影響，要對(duì)液壓油污染進(jìn)行有效的控制，必須定期對(duì)各密封處、接頭處進(jìn)行檢查處理，對(duì)液壓系統(tǒng)的液壓油進(jìn)行檢查分析，還要定期更換液壓油。更換液壓油時(shí)必須將舊液壓油放凈，整個(gè)液壓系統(tǒng)必須先清潔后，再注入新的液壓油。

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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