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液壓升降機的保養與護理
發布時間:2020-08-17    瀏覽次數:
作者:草莓视频app下载ioses网站液壓機械

液壓升降機的保養與護理

  ⒈每月保養
 
  升降台保養時人員進入升降台內部工作,必須吊住升降機防止升降台突然下降而造成人員傷亡。
 
  A.檢查滾輪、中間軸及軸承;油缸銷軸及軸承;臂架鉸軸及軸承等潤滑度和磨損情況;
 
  B.上述各部件加注潤滑油。延長軸承使用壽命。
 
  C.檢查液壓油質和油位。升降台升至最高時液壓油麵應高出油箱底40-50毫米。液壓油油色變暗,油質發粘,或油中有砂礫等異物時,應及時更換液壓油。升降台的液壓係統應用32#液壓油。
 
  ⒉年終保養
 
  A.檢查液壓和管道連接部位。管道有破損應馬上更換;連接部位有鬆動時擰緊管接頭。
 
  B.卸下並拆開下降閥,用壓縮空氣將閥芯吹淨後從新裝上。
 
  C.把油箱中的液壓油全部放盡打開油箱,取出吸油過濾器,洗淨後放回油箱,按原位安裝。油箱中從新注滿新油。
 
  升降機升不起或上升力弱
 
  ⒈溢流閥壓力調節不符合要求調整壓力到要求值
 
  ⒉油缸內泄檢查或更換油缸組件
 
  ⒊換向閥卡緊或內泄檢查或更換閥組件
 
  ⒋油麵過低、進油濾油器堵塞加足油,清洗濾油器
 
  ⒌供油泵有毛病檢查或更換泵
 
  鬆土器升降不起或上升力弱
 
  ⒈溢流閥壓力調節不符合要求調整壓力到要求值
 
  ⒉油缸內泄見上項2.3.4.5的排除方法
 
  ⒊換向閥卡緊或內泄
 
  ⒋油麵過低、進油濾油器堵塞
 
  ⒌供油泵有毛病
 
  ⒍單向閥泄漏檢查單向閥芯與閥座磨損壞情況,單向閥彈簧是否疲勞、變形等。
 
  操作杆沉重
 
  ⒈操作杆機構有毛病檢查、調整、更換不合格零件;清洗閥件;檢查液壓油清潔度
 
  ⒉控製閥閥芯卡緊(製造、安裝問題、汙物問題)
 
  液力變矩器及補償係統有毛病,如液力變矩器無力,動力換檔失靈,油溫過高等
 
  ⒈液力變矩器無力
 
  ⑴液力油量不足
 
  ⑵調壓不當
 
  ⑶背壓不足檢查變矩器油質量(是否誤用液壓傳動用油),用量,檢查變矩調壓閥、背壓閥及其調定壓力值
 
  ⒉動力換檔失靈
 
  ⑴.快回閥、減壓閥、動力變速閥、換向閥出現卡死、內泄漏
 
  ⑵.油汙染嚴重檢查閥卡死原因並作相應排除,過濾或更換液力油。
 
  The hydraulic system is the power system of the hydraulic lifting platform,and is the most important component of the hydraulic lifting platform.Mastering the composition of the hydraulic system of the lifting platform and the efficacy of each part is helpful for people to master and maintain the hydraulic lifting platform in an all-round way.
 
  The hydraulic system of hydraulic lifting platform is generally composed of driving force element,implementing element,control element,auxiliary component and hydraulic oil
 
  1.The key of the driving force component is the hydraulic oil pump.Its function is to convert the mechanical kinetic energy of the transmission device into the hydraulic working pressure energy,and show the driving force to the whole hydraulic system,which is a part of the driving force of the whole hydraulic system.According to the structure,the hydraulic oil pump is generally divided into gear oil pump,axial piston pump,gear pump and screw pump.The common bipolar gasoline pump in the lifting platform can maintain the speed control of the lifting platform according to the operation with the hydraulic directional valve.
 
  2.The key to implement the components refers to the hydraulic cylinder and oil motor.According to the oil motor driving the gasoline pump,the mechanical kinetic energy is converted into the hydraulic working pressure energy,and the hydraulic working pressure energy is converted into mechanical kinetic energy according to the hydraulic cylinder.In that way,the hydraulic cylinder and the oil motor are special tools for energy conversion,in which the hydraulic cylinder does uniform linear motion,and the motor does rotary fitness exercise.Hydraulic cylinder and motor are harmful to the rising rate of hydraulic lifting platform in many aspects.The motor speed is faster and faster,the hydraulic cylinder is smaller and smaller,and the lifting platform speed up rate is faster and faster.
 
  3.The key control element controls the working pressure,total flow rate and orientation of hydraulic oil in the system software of hydraulic press.The control elements include working pressure control valve,total flow valve control valve and azimuth control valve(also known as hydraulic directional valve).The working pressure control valve is divided into:speed regulating valve(valve),pressure regulating valve,sequence valve,working pressure control relay.The key function of working pressure control valve is maintenance and monitoring(inspection and detection)to avoid damage of hydraulic system overpressure.In the hydraulic system of lifting platform,the common working pressure control valve is speed regulating valve,which plays a key role in limiting the overweight of lifting platform.Common total flow valve includes:relief valve,regulating valve(proportional valve),separation and collection control valve.The regulating valve(proportional valve)generally controls the opening degree of the valve according to the current or working voltage of the magnetic coil to exceed the target of regulating the total flow of hydraulic oil,and finally maintain the speed of the lifting platform.The separation valve is often used in a sewage treatment plant where several lifting platform elevators are operated.The key is to keep several lifting platforms in step.Azimuth control valve includes:single side control valve,one-way throttle valve,shuttle valve,hydraulic directional valve,etc.the common azimuth control valve of lifting platform is hydraulic directional valve,which is used to convert fuel pipe and keep hydraulic oil speed regulation.The key function of the hydraulic control system components of the hydraulic lifting platform is to adjust the total flow of hydraulic oil,regulate the flow of hydraulic oil,maintain the safety of the hydraulic system,and finally maintain the speed control and elevator conversion.
 
  4.The auxiliary components are other components besides the three parts,including barometer,oil filter,energy storage equipment,cooling tower,pipe,high-pressure ball valve,quick plug-in joint,total range of plastic hose,pressure measuring joint,pipe clamp and automobiles oil tank,etc.,and the pipe materials include various three-way joints(flaring type,welding type,ferrule type,etc.),Flange),auxiliary components in the hydraulic system is also very important.Classification of hydraulic pipe joints:hydraulic hose,high-pressure ball valve,special quick plug-in joint,ferrule pipe joint,welded pipe joint and high-pressure hose.The most obvious difference between the hydraulic pipe joint and the general tee joint is that the working pressure of the hydraulic press is large and shocking,and the impact force of the oil pipe suddenly cracked is very large.
 
  5.Hydraulic oil,hydraulic oil is the hydraulic system energy conversion and transmission ratio cannot be less than the working material

相關標簽:升降貨梯的保養與維護

本文來源:http://www.dhynre.com/hydt/288.html

案例展示
—— Case presentation ——
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