duminică, 4 martie 2012

APARATE HIDRAULICE

BLOGSPOT CARAGEA NICOLAE SCHEMA  HIDRAULICA  COMENTATA   A  DOI CILINDRI


     SYSTEM OF TWO CYLINDRES WITH  ,DISPLACEMENT  CONTROLLED ON BY ON  AND
RETURN ALL THE SAME WAY.

THEME   When a cylinder head race reached  A  and gathered to start the second cylinder B  This start one after another to be provided by to pressure regulators.  End of race cylinder  B will also provide return cylinder A
 through  a check valve.Opertion the operator turns coil Athe distributor 4/3 (parallel arrows).Fluid leaving the way freeto go the piston head cylinder A Cylinder rod  will come out untilthe head. Offluid behind the piston stroke go to the tank,by passing the valve so the pressure P3internal piloted.When the piston cylinder Acome to
head race sistem pressure will  increase pressure until the pressure P1 at which the pressure is adjusted excess
pressure over P1 all  discharge into  instalation will go to the presssure P2  set to P2<P1
The pressure diference P2 will discharge the fluid in the piston head cylinder B rod pushes aut the piston behind
Fluid go directley to the tank.The  end race cylinder B(stemautstanding )at maximum excitation  coil contact FC
(b) of distributor 4/3 realising the return rod cyliinder B in this  case the fluid pressure in the sistem increases
above the P3the pilot will give free way of realising such fluid A .piston cilinder return .fluid from piston head cylindrer willgo directley to the tank
     A ciylinder piston when you get to race head coil and distributor desexcitation "b" is pass the neutral position and the cycle repeats A distributor 4/3 with a closed hole B that maintain the position the two cylinders and arrival
this scheme is en countered in circuit press.

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