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 automobile 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