力士乐液压计算公式

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力士乐液压计算公式RELATIONS BETWEEN UNITS ............................................................................................................. 4
IMPORTANT CHARACTERISTIC VALUES OF HYDRAULIC FLUIDS ................................................ 6
GENERAL HYDRAULIC RELATIONS................................................................................................... 7
PISTON PRESSURE FORCE...................................................................................................................... 7
PISTON FORCES..................................................................................................................................... 7
HYDRAULIC PRESS................................................................................................................................. 7
CONTINUITY EQUATION........................................................................................................................... 8
PISTION SPEED....................................................................................................................................... 8
PRESSURE INTENSIFIER.......................................................................................................................... 8
HYDRAULIC SYSTEM COMPONENT ................................................................................................... 9
HYDRO PUMP......................................................................................................................................... 9
HYDRO MOTOR....................................................................................................................................... 9
Hydro motor variable ...................................................................................................................... 10
Hydro motor fixed ........................................................................................................................... 11
Hydro motor intrinsic frequency ..................................................................................................... 12
HYDRO PISTON..................................................................................................................................... 13
Differential piston............................................................................................................................ 14
Double acting cylinder .................................................................................................................... 15
Cylinder in differential control ......................................................................................................... 16
Cylinder intrinsic frequency at differential cylinder......................................................................... 17
Cylinder intrinsic frequency at double acting cylinder .................................................................... 18
Cylinder intrinsic frequency at plunger cylinder ............................................................................. 19
PIPING................................................................................................................................................... 20
APPLICATION EXAMPLES FOR SPECIFICATION OF THE CYLINDER PRESSURES AND
VOLUME FLOWS UNDER POSITIVE AND NEGATIVE LOADS........................................................ 21
DIFFERENTIAL CYLINDER EXTENDING WITH POSITIVE LOAD..................................................................... 22
DIFFERENTIAL CYLINDER RETRACTING WITH POSITIVE LOAD................................................................... 23
DIFFERENTIAL CYLINDER EXTENDING WITH NETAGIVE LOAD.................................................................... 24
DIFFERENTIAL CYLINDER RETRACTING WITH NEGATIVE LOAD.................................................................. 25
DIFFERENTIAL CYLINDER EXTENDING AT AN INCLINED PLANE WITH POSITIVE LOAD.................................. 26
DIFFERENTIAL CYLINDER RETRACTING AT AN INCLINED PLANE WITH POSITIVE LOAD................................. 27
DIFFERENTIAL CYLINDER EXTENDING AT AN INCLINED PLANE WITH NEGATIVE LOAD................................ 28
DIFFERENTIAL CYLINDER RETRACTING AT AN LINCLINED PBLANE WITH NEGATIVE LOAD............................ 29
HYDRAULIC MOTOR WITH POSITIVE LOAD............................................................................................... 30
HYDRAULIC MOTOR WITH NEGATIVE LOAD.............................................................................................. 31
IDENTIFICATION OF THE REDUCED MASSES OF DIFFERENT SYSTEMS................................... 32
LINEARE DRIVES.................................................................................................................................. 33
Primary applications(Energy method) ...........................................................................................33
Concentrated mass at linear movements....................................................................................... 35
Distributed mass at linear movements ...........................................................................................36
ROTATION............................................................................................................................................ 37
COMBINATION OF LINEAR AND ROTATIONAL MOVEMENT.......................................................................... 38
HYDRAULIC RESISTANCES...39
ORIFICE EQUATION...............................................................................................................................39
TROTTLE EQUATION.............................................................................................................................. 39