Any Mechanical Device Has Its Own Working Principle, That Is To Say, Lift, It Also Has Its Own Working Principle. Elevator Principle: The Hydraulic Oil Forms A Certain Pressure By The Vane Pump, Enters The Lower End Of The Hydraulic Cylinder Through The Oil Filter, Explosion-proof Electromagnetic Reversing Valve, Throttle Valve, Hydraulic Control Check Valve And Balance Valve, So As To Make The Piston Of The Hydraulic Cylinder Move Upward And Lift The Weight. The Return Oil At The Upper End Of The Hydraulic Cylinder Returns To The Oil Tank Through The Explosion-proof Electromagnetic Reversing Valve, And Its Rated Pressure Is Adjusted Through The Overflow Valve, And The Pressure Gauge Is Observed Through The Pressure Gauge Read The Value. The Piston Of The Hydraulic Cylinder Moves Downward (i.e. The Weight Drops). The Hydraulic Oil Enters The Upper End Of The Hydraulic Cylinder Through The Explosion-proof Electromagnetic Directional Valve, And The Return Oil At The Lower End Of The Hydraulic Cylinder Returns To The Oil Tank Through The Balance Valve, Hydraulic Control Check Valve, Throttle Valve And Explosion-proof Electromagnetic Directional Valve. In Order To Make The Weight Drop Stably And Brake Safely And Reliably, A Balance Valve Is Set On The Oil Return Circuit To Balance The Circuit And Maintain The Pressure So That The Lowering Speed Is Not Changed By The Weight. The Flow Is Adjusted By The Throttle Valve To Control The Lifting Speed. In Order To Make The Brake Safe And Reliable And Prevent Accidents, A Hydraulic Control Check Valve, I.e. A Hydraulic Lock, Is Added To Ensure The Safety Of Self-locking When The Hydraulic Pipeline Bursts Accidentally. The Overload Sound Control Alarm Is Installed To Distinguish Overload Or Equipment Failure. The Electronic Control System Can Control The Rotation Of The Motor Through The Explosion-proof Button, So As To Change The Direction Of The Explosion-proof Electromagnetic Reversing Valve, So As To Keep The Load Up Or Down, And Adjust The Time Delay Through The "logo" Program, So As To Avoid The Inflexible Rise And Fall Caused By The Frequent Start Of The Motor, The Phenomenon Of Jamming, And The Extension Of The Service Life. Elevator FAQ The Elevator Has Been Inspected And Debugged Before Leaving The Factory. All Technical Indexes Meet The Design Requirements. When Using, Only The Power Supply Needs To Be Connected, And The Hydraulic And Electrical Systems Do Not Need To Be Adjusted. In Use, The Elevator Must Be Placed On A Solid And Flat Ground To Prevent Tipping During Operation. Press The "up" Or "down" Button To Raise And Lower The Table. If The Worktable Does Not Move, Stop The Machine Immediately For Inspection. If The Working Pressure Of The Electric Elevator Is Too High Or The Sound Is Abnormal, The Elevator Shall Be Shut Down Immediately For Inspection To Avoid Serious Damage To The Machinery; The Working State Of The Shaft Pin Shall Be Checked Regularly Every Month. If The Shaft Pin And Screw Are Found To Be Loose, They Must Be Locked To Prevent Accidents Caused By The Shaft Pin Falling Off. The Hydraulic Oil Shall Be Kept Clean And Replaced Every 6 Months; When Maintaining And Cleaning The Elevator, It Is Necessary To Support The Safety Brace.