摘要:
A radial piston pump 101 comprising a rotor 103 is disclosed. The rotor 103 includes a drive shaft 105 arranged to transmit rotary motion to or from the pump 101 and a piston housing 102 including at least one piston chamber 104, the at least one piston chamber 104 being arranged to receive a piston 108. The drive shaft 105 and the piston housing 102 are integrally formed.
摘要:
The hydraulic machine comprises a cam (4) and a cylinder block with pistons (14) collaborating with the lobes of the cam, which lobes each have two ramps (50A, 50B) extending between top dead centre and bottom dead centre (PH, PB) arcs. The cylinders are connected alternately to a supply and to an exhaust, according to sequences separated by switchover phases comprising a phase of isolation with respect to the main, supply and exhaust, ducts. The angular position of the start or end of at least one first phase of isolation with respect to the corresponding dead centre arc differs from the angular position of the start or end of at least a second phase of isolation with respect to its corresponding dead centre arc, these dead centre arcs both being top dead centre or bottom dead centre arcs.
摘要:
The present invention relates to a hydraulic device (10) with radial pistons, comprising: - a shaft (12) arranged along an axis (1); - a cover (13) forming a casing element, the cover and the shaft being free to rotate with respect to one another; - a distribution assembly comprising: - a multi-lobe cam (14); - a cylinder block (15); - a distributor (16) configured to exert a thrust force (P) against the cylinder block (15) along the axis (11) of the shaft; - an assembly (22) of mechanical bearings comprising at least one mechanical bearing (22a) mounted in radial contact between the cover (13) and shaft (12), said assembly being configured to take up the thrust force (P) exerted by the distributor (16); and - a straight contact ball bearing mounted in radial contact between the cover (13) and the shaft (12).
摘要:
Le dispositif comprend un distributeur (16) qui présente des conduits de distribution débouchant dans une face radiale de distribution (16A), et un contre-distributeur emmanchés l'un dans l'autre de sorte que deux enceintes principales (18, 20) sont ménagées entre leurs faces axiales en regard. Le dispositif comprend un sélecteur de cylindrée comprenant deux tiroirs (24, 26) disposés l'un à la suite de l'autre dans un alésage (22) de l'élément emmanché dans l'autre, auquel sont raccordées les enceintes principales (18, 20) et au moins une partie des conduits de distribution (30, 31). Les tiroirs peuvent adopter au moins trois configurations distinctes établissant des liaisons différentes entre les conduits principaux (18, 20) et les conduits de distribution via les enceintes principales, pour pouvoir obtenir au moins trois cylindrées distinctes de fonctionnement.
摘要:
The present invention relates to a subassembly for forming a hydraulic motor after assembly onto an assembly including a shaft (400), said subassembly including a cover (100) forming a housing element, a multilobe cam (200), a cylinder block (300) opposite the cam (200), pistons (500) guided so as to slide radially within the respective cylinders of the cylinder block (300) and bearing on the lobes of the cam (200), and a valve (600) intended to apply pressurized fluid to said pistons (500) in series, characterized in that said subassembly includes means (152, 154) for temporarily attaching the cylinder block (300) to the cover (100) and means (185) for accessing an element (610) of the valve (600) through the cover (100) in order to enable, during installation, the angular positioning of said element (610) with respect to the shaft (400), followed by the attachment thereof to the shaft (400). The present invention also relates to a method for assembling such a hydrobase.