1、A10V(S)O Pressure/Flow control DFR(1) Ports,Pressure control DR Standard setting: A10VODFR/31: 280 bar A10VODFR/52: 250 bar,Flow control FR (Dp = 10 - 22 bar) Standard setting: Dp = 14 bar,X - Pilot pressure port,Pressure port B,Case drain port L,Suction port S,(viewed A10VO, BR 31, clockwise),Dampi

2、ng orifice,Pressure spring,Control piston (8),Flow control (Standard: Dp = 14 bar); Spring force (5),Decompression orifice,Adjustable orifice, (6) res. Mobile valve block (not included in supply),X - port,A10V(S)O Pressure/Flow control DFR(1) Circuit diagram,(Circuit diagram viewed for A10VO, series

3、 31),4,3,2,7,9,1,DR,FR,A10 146.1.e/VST6/H 01.AK,Bias piston and spring,Damping orifice,Pressure port,Control piston,Counter balance piston and mechanical spring,Flow control (Standard: Dp = 14 bar);,Decompression orifice,Adjustable orifice, res. Mobile valve block (not included in supply),X - port,A

4、10V(S)O Pressure/Flow control DFR(1) Circuit diagram,(Circuit diagram viewed for A10VO, series 31),DR,FR,A10 146.2.e/VST6/H 01.AK,A10V(S)O Pressure/Flow control DFR(1)Function and circuit diagram,DR,FR,X,Orifice res. Mobile valve block,DR - axis,FR - axis,LS - pilot pressure,X,A10 146.3.e/VST6/H 01.

5、AK,A10V(S)O Pressure/Flow control DFR(1) p - control characteristic f (x) = (px, Vg),A10 VO 74 DFR(1),Mode of experimental procedure:,n = 1500 rpm p = 15 bar Stand by = 20 bar,p = 15 bar,High pressure: p HD,Simulated load pressure: p X,A10V(S)O Pressure/Flow control DFR(1)Decompression orifice and d

6、amping orifice,DFR with decompression orifice: (DFR: Standard: 0,35 mm)(DFR1: closed, without drilling),Damping orifice DR - FR (Standard: 0,6 mm,Slit in longitudinal direction: orifice opened Slit in cross direction : orifice closed, SO 74),FR - axis,DR - axis,DR,FR,X,A10V(S)O Pressure/Flow control

7、 DFR(1)Damping orifice,Damping orifice DR - FR (Standard: 0,6 mm, Slit in longitudinal direction: orifice opened Slit in cross direction : orifice closed, (SO 74),A10V(S)O Pressure/Flow control DFR(1)Measurement of high pressure,Measurement high pressure: At this particular spot, the existing plugs

8、(M8 x 1) can be replaced by mini measure-ment connections,Attention: The mini - measurement connection have to be shortened according to the original lenght of the plug (reach of a screw 7 mm).,A10 146.7.e/VST6/H 01.AK,A10V(S)O Pressure/Flow control DFR(1)Adjustment for pressure- res. flow control,V

9、alve axis: Flow control,Adjustment of flow control: Stand - by“ pressure measurement or Differential pressure measurement with swivel angle !,Adjustment of pressure control,Valve axis: Pressure control,Measuring - point 1: High pressure (measurable at plug of DR valve axis),A10V(S)O Pressure/Flow co

10、ntrol DFR(1)Adjustment of pressure control DR,DR,FR,Procedure: FR - flow control blocked ! High pressure line closed ! Adjusting of DR pressure control with setting value !,X,Adjustment DR : each rotation app. 50 bar !,- 50 bar + 50 bar,A10 146.9.e/VST6/H 01.AK,Measuring - point 1: zero stroke press

11、ure (measurable at plug of valve axis),1. Stand by“ pressure measurement:,A10V(S)O Pressure/Flow control DFR(1)Adjustment of flow control FR,DR,FR,Procedure: X - port unloaded to tank ! close high pressure port !,X,Standard adjustment FR Dp = 14 bar (When port X is unloaded to tank, a zero stroke pr

12、essure of p = 16 1 bar stand by“ results.,- 16 bar + 16 bar,Measuring - point 1: load pressure corresponding to pressure of port X ! ( LS - signal ),Measuring - point 2: High pressure (measureable at plug of valve axis),2. Possibility: Differential pressure measurement :,A10V(S)O Pressure/Flow contr

13、ol DFR(1)Adjustment of flow control FR,DR,FR,X,- 16 bar + 16 bar,A10V(S)O Pressure/Flow control DFR(1)Differences between DFR and DFR1,DFR - design With decompression orifice ! (DFR: Standard: 0,35 mm glued in place, fastened with Loctide),DFR1 - design Without decompression orifice ! (DFR1: closed,

14、 without drilling),A10 146.12.e/VST6/H 01.AK,A10V(S)O Pressure/Flow control DFR(1)Usage DFR(1) for series 31 and 52 !,A10 - series 31: DFR(1) - without return line orifice !,A10 - series 52: DFR(1) - with return line orifice (Standard: 2,2 mm !),Special design (Stabilization): SO 116: Return line or

15、ifice 1,3 mm SO 229: Return line orifice 1,5 mm SO 231: Return line orifice 2,2 mm SO 277: Return line orifice 1,0 mm SO 381: Return line orifice 0,8 mm SO 617: Return line orifice 0,6 mm,X,A10V(S)O Pressure/Flow control DFR(1)Mounting of DFR(1) control (series 31),Mounting of DFR(1) - control (A10V

16、(S)O series 31) depends on direction of rotation (Direction of rotation by view on drive shaft) !,A10V(S)O Pressure/Flow control DFR(1)Different designs,DFR(1) for A10V(S)O Size 18 - 100 Standard design !,DFR(1) for A10V(S)O Size 140 Design in sandwich - plate design !,A10 146.15.e/VST6/H 01.AK,Pres

17、sure control DR Standard setting: A10V(S)O DFLR/31: 280 bar,Flow control FR (Dp = 10 - 22 bar) Standard setting: Dp = 14 bar,X - Port (With integrated orifice (in adap-ter): 0,8 mm),Pressure port B,Case drain port L,Suction port S,(viewed A10VO, series 31, clockwise),Power- control LR,Ports,A10V(S)O

18、 pressure, flow and power control DFLR,A10V(S)O pressure, flow and power control DFLR,Circuit diagram,A10V(S)O pressure, flow and power control DFLR,Function and circuit diagram,A10V(S)O pressure, flow and power control DFLR,Function and circuit diagram,A10V(S)O pressure, flow and power control DFLR

19、,Function power control,Adjustable spring package of power control valve,Eccenter cradle position (i.e. displaced volume) will be restored by the eccenter prestress of the spring package will be changed by the eccenter Thereby the opening pressure of the power control valve has been changed small sw

20、ivel angle = high pressure large swivel angle = low pressure,A10V(S)O pressure, flow and power control DFLR,Integrated orifice and damping orifice,A10V(S)O pressure, flow and power control DFLR,Measurement of high pressure,Measurement of high pressure: At this particular spot, the existing plugs (M8

21、 x 1) can be replaced by mini measure-ment connections.,Attention: The mini - measurement connection have to be shortened according to the original lenght of the plug (reach of a screw 7 mm).,A10V(S)O pressure, flow and power control DFLR,Adjustment of DR, FR and LR - control,Valve axis: flow contro

22、l,Adjustment of pressure control Adjustment of flow control: stand-by“ pres- sure measurement or differential pressure measurement with semi swivel angle !,Adjustment of power control,Valve axis: pressure control,A10V(S)O pressure, flow and power control DFLR,Adjustment of power control,Start of con

23、trol !,Start of control is adjustable bythe first outer spring, prestressed at fully displaced volume (100% Vg),End of control is adjustable by the second inner spring, clearance at fully displaced volume (100% Vg),torque,0,40,60,80,20,50,100,150,200,250,280,Q l/min ,pressure pHD bar,drive torque Nm,0,0,4,0,6,1,0,0,2,Vg / Vgmax,0,8,Point of action of thesecond inner spring,A10V(S)O pressure, flow and power control DFLR,Hints for assembling/disassembling of the LR valve,1. : loosening the