Poclain Hydraulics Industrie

Clement Philippe Recoura

Jean Heren

Laurent Albert

Gilles G Lemaire

Stéphane Vidal

Julien Lambey

Cyrille D'Hersignerie

Christophe Gouzou

Guillaume Charrier

Herve Desumeur

The invention relates to a valve assembly () of a radial piston hydraulic apparatus (). Said apparatus includes a cylinder block () insertable onto a shaft () by translation. Said assembly () includes: a valve () in contact with said cylinder block (); a valve train cover (); and a first () and second () chamber that are defined, respectively, by a first () and second () space that are located at the interface between said valve () and said valve train cover (), and are intended for the pressurized fluids that enable the conversion of pressure and/or mechanical stress. Said assembly () includes an additional section () defined by a third space () located at the interface between said valve () and said valve train cover (). Said section () is intended for receiving a pressurized fluid such as to enable the cylinder block () to be inserted onto the shaft ().

Hydraulic apparatus having an additional thrust section

An assembly () comprising a radial piston hydraulic motor (), comprising a fixed housing (), a shaft () that can be driven in rotation by the hydraulic motor (), a wheel hub () comprising a hub barrel () that engages on the shaft (), a bearing (), a bearing support (), in which the bearings () are housed between the hub barrel () and the bearing support () of the hydraulic motor (), the bearing support () forming part of the housing (), such that the bearing function is carried out by the housing (), the shaft () supporting only the weight of same and having only a torque function.

Hydraulic torque motor

A vehicle including a driving axle (), a driven axle (), a hydraulic pump () and a hydraulic motor () providing hydraulic assistance for driving the driven axle () by lapping off torque applied to the driving axle (). The driving axle () comprising includes a differential () thus defining two output half axles on which wheels are mounted. Rotation of the box allows the output half axles to be rotationally driven at distinct speeds. The hydraulic pump () includes a rotor and a stator, the stator being mounted fixed with respect to the chassis and the rotor being connected to and rotating as one with the differential box (). The hydraulic pumps () are rotationally driven at a speed equal to the average speed of the two half axles associated with the differential () on which the pump is mounted.

Vehicle with hydraulic assistance by transmitting torque from a driving axle to a driven axle

The invention relates to a hydraulic apparatus () including: a casing () defining a first assembly; a shaft () defining a second assembly; said first and second assemblies being freely rotatable relative to one another; a multi-lobe cam () rotatably connected to one of said first or second assembly; a dispenser () and a dispenser cover (); a cylinder block () mounted such as to be freely rotatable relative to said first and second assemblies and including a means for rotatably engaging relative to the other of said assemblies, characterized in that the hydraulic apparatus () includes a return means for moving the cylinder block () in order to rotatably disengage same from said first or second assembly, and in that the dispenser () is configured, when applying pressure, to rotatably engage the cylinder block () relative to the other of said first or second assembly.

Hydraulic apparatus having an improved structure for its commissioning

A hydraulic transmission circuit comprising three or four coupled hydraulic elementary motors, each elementary motor having a first and a second secondary enclosure. The circuit includes four distribution valves for which the respective outlet channels may be selectively connected to two main conduits for supplying fluid to and discharging fluid from the circuit. The outlet channels of the first and second valves are connected to at least one of the first secondary enclosures; those of the third and fourth valves are connected to at least one of the second secondary enclosures. Each of the elementary motors has a first secondary enclosure connected to a single valve from among the first or second valve and a second secondary enclosure connected to a single valve from among the third or fourth valve. The valve pairs thereby connected to said elementary motors respectively, are all distinct, two by two.

Growing community of inventors

Verberie, France

Clement Philippe Recoura