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US 5,855,115 AGranted
Auxiliary hydraulic motor
AssigneePoclain Hydraulics
InventorLouis Martin
Life of this patent
Estimating the term…
Abstract
An auxiliary hydraulic motor comprises a fixed casing having a cam, a cylinder block, an internal fluid distributor, and a through shaft which extends inside the casing along the axis of rotation of the cylinder block. The through shaft is constituted by a length of a vehicle transmission shaft. The motor includes an axially moving coupling member suitable, in a first position, for being engaged with the cylinder block and the shaft via first and second mechanical engagement means, and in a second position, for being disengaged from the cylinder block and/or the shaft.
Claims16
An auxiliary hydraulic motor comprising:
- a fixed casing having main ducts for fluid feed and exhaust;
- a reaction member secured to the casing;
- a cylinder block mounted to rotate relative to said reaction member about an axis of rotation and including a plurality of piston-and-cylinder assemblies disposed radially relative to the axis of rotation and suitable for being fed with fluid under pressure;
- an internal fluid distributor secured to the casing against rotation about the axis of rotation and including distribution ducts suitable for putting the cylinders into communication with the main fluid feed and exhaust ducts;
- and
- a through shaft extending inside the casing along the axis of rotation;
- wherein one end portion of said through shaft extends through one end of said casing and a second end portion of said through shaft extends through another end of said casing, opposite the one end
- wherein the motor further includes a coupling member which is disposed inside said fixed casing between roller bearings which rotatably support said through shaft with respect to said casing, first mechanical engagement means for constraining the coupling member and the cylinder block to rotate together, and a second mechanical engagement means for constraining the coupling member and the through shaft to rotate together, the coupling member being axially movable between an "active" first position in which the first and second engagement means fare mutually engaged, and an "inactive" second position in which at least one of the first and second mechanical engagement means are disengaged, the motor including control means for controlling displacement of the coupling member between said first and second positions.
5 more elements
An auxiliary hydraulic motor comprising:
- a fixed casing having main ducts for fluid feed and exhaust;
- a reaction member secured to the casing;
- a cylinder block mounted to rotate relative to said reaction member about an axis of rotation and including a plurality of piston-and-cylinder assemblies disposed radially relative to the axis of rotation and suitable for being fed with fluid under pressure;
- an internal fluid distributor secured to the casing against rotation about the axis of rotation and including distribution ducts suitable for putting the cylinders into communication with the main fluid feed and exhaust ducts;
- and
- a through shaft extending inside the casing along the axis of rotation;
- wherein one end portion of said through shaft extends through one end of said casing and a second end portion of said through shaft extends through another end of said casing, opposite the one end;
- wherein the motor further includes a coupling member disposed inside said fixed. casing, first mechanical engagement means for constraining the coupling member and the cylinder block to rotate together, and second mechanical engagement means for constraining the coupling member and the through shaft to rotate together, the coupling member being axially movable between an active first position in which the first and second engagement means are mutually engaged, and an inactive second position in which at least one of the first and second mechanical engagement means are disengaged, the motor including control means for controlling displacement of the coupling member between said first and second positions;
- and wherein the coupling member is disposed coaxially around the through shaft, the cylinder block and the internal fluid distributor themselves being disposed around the coupling member.
6 more elements
Dependencies are inferred from the claim text.