Combination of two pressurized fluid motors
AssigneePoclain Hydraulics
InventorsLouis Bigo, Jacques Fontaine, Gilles Lemaire
Life of this patent
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Abstract
In a combination of two pressurized fluid motors fed in parallel by a common feed circuit, each of the pressurized fluid motors includes a casing and a cylinder block rotatable about an axis relative to a cam constrained to rotate with said casing and having a communication side perpendicular to the axis. An internal fluid distributor is constrained to rotate with the cam. It has a distribution side perpendicular to the axis and bears against the communication side. Distribution conduits open onto the distribution side and are formed in the internal fluid distributor of each motor. The casings of the two motors are constrained to rotate together.
Claims21
A combination of a first pressurized fluid motor and a second pressurized fluid motor fed in parallel by a common pressurized fluid feed circuit including an external fluid feed conduit and an external fluid outlet conduit, each of said pressurized fluid motors including:
- a casing;
- a cylinder block rotatable about a rotation axis relative to a reaction member constrained to rotate with said casing and having a communication side perpendicular to said rotation axis;
- an internal fluid distributor constrained to rotate with said reaction member about said rotation axis and having a distribution side also perpendicular to said rotation axis and adapted to bear against said communication side of said pressurized fluid motor;
- and
- distribution conduits in said internal fluid distributor opening onto said distribution side;
- the casings of said two motors being constrained to rotate together about said rotation axis;
- wherein said internal fluid distributor of said first pressurized fluid motor presents a first connecting face and said internal fluid distributor of said second pressurized fluid motor presents a second connecting face, said first and second connecting faces facing each other and hydraulically connecting said internal fluid distributors to one another, said internal fluid distributors being axially slightly movable with respect to one another and the pressures of fluids in said distribution conduits tending to separate said first and second connecting faces, so that said distribution sides of said internal fluid distributors of said first and second pressurized fluid motors respectively thrust against said communication sides of said cylinder blocks of said first and second pressurized fluid motors.
A combination of a first pressurized fluid motor and a second pressurized fluid motor fed in parallel by a common pressurized fluid feed circuit including an external fluid feed conduit and an external fluid outlet conduit, each of said pressurized fluid motors including:
- a casing;
- a cylinder block rotatable about a rotation axis relative to a reaction member constrained to rotate with said casing and having a communication side perpendicular to said rotation axis;
- an internal fluid distributor constrained to rotate with said reaction member about said rotation axis and having a distribution side also perpendicular to said rotation axis and adapted to bear against said communication side of said pressurized fluid motor, said internal fluid distributor having, axially opposite the distribution side thereof, a thrust side perpendicular to said rotation axis;
- distribution conduits in said internal fluid distributor opening onto said distribution side;
- the casings of said firs and second pressurized fluid motors being constrained to rotate together about said rotation axis;
- at least some of the distribution conduits of the internal distributor of at least one of said first and second pressurized fluid motors opening in the thrust side of said internal distributor at ends constituting housings to receive tubular connecting pegs, each of said connecting pegs having a transverse side projecting relative to the housing to receive said connecting peg and communicating, firstly, with the distribution conduit of the internal distributor of one of said first and second pressurized fluid motors, one end of said distribution conduit constituting said housing for receiving said connecting peg and, secondly, with a distribution conduit opening onto the thrust side of the internal fluid distributor of another of said first and second pressurized fluid motors;
- and
- said internal fluid distributors being axially slightly movable with respect to one another and the pressures of fluids in said distribution conduits tending to separate said first and second thrust sides, so that said distribution sides of said internal fluid distributors of said first and second pressurized fluid motors respectively thrust against said communication sides of said cylinder blocks of said first and second pressurized fluid motors.
A combination of a first pressurized fluid motor and a second pressurized fluid motor fed in parallel by a common pressurized fluid feed circuit including an external fluid feed conduit and an external fluid outlet conduit, each of said pressurized fluid motors including:
- a casing;
- a cylinder block rotatable about a rotation axis relative to a reaction member constrained to rotate with said casing and having a communication side perpendicular to said rotation axis;
- an internal fluid distributor constrained to rotate with said reaction member about said rotation axis and having a distribution side also perpendicular to said rotation axis and adapted to bear against said communication side of said pressurized fluid motor, said internal fluid distributor having an axial side having a plurality of staggered shoulders and a plurality of axial cylindrical surfaces separating said staggered shoulders;
- distribution conduits in said internal fluid distributor opening onto said distribution side;
- the casings of said first and second pressurized fluid motors being constrained to rotate together about said rotation axis;
- said axial cylindrical surfaces of said internal fluid distributors of both of said pressurized fluid motors being arranged in pairs in facing relationship and sealing means being provided between the two axial cylindrical surfaces of each one of said pairs, so that axial balancing chambers for the internal fluid distributors of both of said pressurized fluid motors are formed, each of said axial balancing chambers being formed between said two internal fluid distributors and between two successive pairs of axial cylindrical surfaces, at least some of said distribution conduits opening into said axial balancing chambers, and
- said internal fluid distributors being axially slightly movable with respect to one another and the pressures of fluids in said distribution conduits and in said balancing chambers tending to separate said first and second axial sides, so that said distribution sides of said internal fluid distributors of said first and second pressurized fluid motors respectively thrust against said communication sides of said cylinder blocks of said first and second pressurized fluid motors.
Dependencies are inferred from the claim text.