Poclain Hydraulics Industrie

Gery Depierre

Bernard R Allart

Philippe Raymond Lucienne

Julien Viard

Matej Erznoznik

Pierre-Louis Houillon

Christophe Gouzou

Claude Didierjean

Fabien Roger

Loris Taxil

David Devred

Cécile Borgnon

Hervé Desumeur

Clément Recoura

Cédric Magnien

Cedric Magnien

Philippe Lucienne

Viktor Kuban

Alessio Del Mastro

The present invention concerns a hydraulic system comprising a hydraulic pump () installed on a truck tractor (), a hydraulic pipe () connected to the outlet of the pump () and a connector () positioned at the outlet of the pipe () and designed to be connected to a complementary socket () provided on a trailer () in order to supply a ram () positioned on the trailer, for example for tipping purposes, characterised by the fact that it comprises a circuit selector () designed to connect said socket () selectively either to a ram () or a conduit () supplying a drive assistance circuit and an assistance circuit return conduit () designed to be connected to a tank () positioned on the truck tractor.

System for assisting the driving of a trailer from an open tipping hydraulic circuit

According to the method, transmission apparatus of a vehicle, the apparatus comprising a drive engine (), a mechanical transmission () connected to the drive engine, and a hydraulic transmission () having a pump () and n hydraulic motors (A,B), where n is greater than or equal to 1, the pump being suitable for being driven by the drive engine for feeding fluid to the hydraulic motors. The method consists in performing a 'low-speed' assistance stage, during which, when the vehicle is driven by the mechanical transmission, the method consists in establishing a setpoint pressure for the pressure difference between the feed and the discharge of each of the hydraulic motors, in feeding the hydraulic motors by the pump, in detecting the pressure difference between the feed and the discharge (A,B) of each of the hydraulic motors (A,B), and in adjusting the delivery rate of the pump so that said pressure difference is substantially equal to said setpoint pressure.

Method for hydraulically assisting the drive of a vehicle at low-speed

The present invention relates to a subassembly for forming a hydraulic motor after assembly onto an assembly including a shaft, said subassembly including a cover forming a housing element, a multilobe cam, a cylinder block opposite the cam, pistons guided so as to slide radially within the respective cylinders of the cylinder block and bearing on the lobes of the cam, and a valve intended to apply pressurized fluid to said pistons in series, wherein said subassembly includes means for temporarily attaching the cylinder block to the cover and means for accessing an element of the valve through the cover in order to enable, during installation, the angular positioning of said element with respect to the shaft, followed by the attachment thereof to the shaft. The present invention also relates to a method for assembling such a hydrobase.

Subassembly forming a hydrobase for hydraulic motors, and assembly method

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Verberie, France

Gery Depierre