Brueninghaus Hydromatik Gmbh

Brueninghaus Hydraulik Gmbh

Lohmann & Stolterfoht Gmbh

Robert Boschgmbh

Bosch Rexroth Ag

Josef Beck

Heinz Berthold

Manfred Lotter

Gerhard Beutler

Martin Zug

Hartwig Pfordt

Ivan Pecnik

Karl-Heinz Jakubowski

The invention relates to an axial piston machine, in addition to a swash-plate for said machine and a method for producing a swash-plate. The swash-plate () is configured as a disc and has a central bore (), which is encompassed by a collar (), extending in an axial direction from a first surface (') of the swash-plate (). In addition, the swash-plate () has several sliding block receiving openings (), each of the latter () being encompassed by a guide collar (), which extends in an axial direction from a second surface of the swash-plate (), in the opposite direction to the collar () of the central bore ().

Axial piston machine, recoil plate and method of manufacturing a recoil plate

The invention relates to a control plate () for an axial piston engine (). The inventive control plate () comprises a through hole () and a radial internal edge of said control plate () embodied in the form of a centering surface () which centers the control plate () to a centering body () arranged on the side of a bearing surface. Said centering surface () consists of several partial surfaces () formed on segments () of the internal edge () of the control plate () radially extending towards the internal space of said through hole (). The segments () are divided by cuts ().

Axial piston machine and a control plate for an axial piston engine

The invention relates to a hollow piston () for a piston engine, said hollow piston comprising a peripheral wall (), a central rod (), a front wall () on the front end thereof, and an articulated part) on the rear end thereof. The inventive hollow piston () has an annular cavity () formed against the rod (), between the peripheral wall () and the articulated part (). A rear section of the cavity () forms a front section of the articulated part (). The aim of the invention is to stabilize the hollow piston while ensuring an efficient guidance of the piston. To this end, the rod () ends the region of the cavity (), the articulated part () is a cap-shaped articulation recess (), and the rear section of the cavity () forms at least part of the articulated surface () of the articulation recess ().

Tubular piston for a piston engine and method of manufacturing the same

Piston engine with a housing in which a shaft () is rotatably mounted in two pivot bearings of which at least one pivot bearing has an inner ring () which is seated without radial clearance of motion on a supporting region () of a bearing section () of said shaft (). In order to prolong the working life of the at least one pivot bearing, the axial length of the supporting region () corresponds to a central region (a) of the bearing section (), a radial clearance of motion being disposed, at the two outer regions (b, c), between said outer regions (b, c) and the inner ring ().

Piston engine, shaft and rolling bearing for a piston engine

The invention relates to a tubular piston for a piston engine, comprising a tubular section, a collar shaped region and a ball pivot formed thereon, and an inner tube arranged in an outer tube. A cavity is at least partially formed between the outer tube and the inner tube. Said cavity is sealed from the area surrounding the hollow piston in a pressure-tight manner, by a material, especially a solder material, which is arranged in the cavity in a positively locking manner by means of heating.

Tubular piston for a piston engine and method producing a tubular piston

An axial piston machine () having a rotatably mounted cylinder drum () which in turn has a center recess () and a plurality of cylinder bores () that extend substantially axially relative to the center bore () and in which pistons () are movably guided and are supported on a pivoting plate () via sliding shoes (). The sliding shoes () are guided in recesses () of a withdrawal plate () in whose contact inner bore () a withdrawal body () is guided with an outer surface that corresponds to the inner bore () of the withdrawal plate (). The withdrawal body () is subject to an axially directed pretension force which is exerted by a compression spring () via the pressure pins (). Every pressure pin (), on its base side (), is provided with an enlarged portion () radially in relation to its longitudinal axis ().

Pressure pin and axial piston machine having said pressure pin

The invention relates to a piston for a hydrostatic machine and a corresponding production method. In a conventional production method of this type, the piston is shaped from a blank into a shank section and a ball and socket joint section connected to the shank section by means of a neck section. According to the inventive embodiment, an additional blank for an inner tube is inserted into the blank of the outer tube before the latter is shaped. A hollow piston comprising one or more hollow chambers between the inner and outer tubes is formed after both blanks have been shaped.

Hydrostatic machine piston

Axial piston machine with internal flushing circuit

Piston for a hydrostatic axial piston machine

Hydrostatic axial piston motor for fitting in the hub of a driven wheel

The invention concerns axial piston machines for installation in gearboxes and for detachable attachment thereto, having an machine housing open on one side, a connection block which closes this housing and has a pressure duct and an suction duct for the pressure medium, and a driving shaft rotatably mounted in the machine housing and the connection block, which drive shaft projects from the axial piston machine for the purpose of connection to a gear unit, the gearbox being capable of being closed by means of a gearbox cover, and having through apertures for the supply and discharge of the pressure medium to the pressure duct and suction duct. In order to increase the operating reliability of the installed axial piston machine and for the easier installation and removal thereof, the axial piston machine is provided for attachment to the gearbox cover, attachment taking place by way of the connection block, which has a contact surface which bears in the attached state against an opposing surface of the gearbox cover, the pressure duct and suction duct open at the contact surface and the through apertures formed as connecting ducts open at the opposing surface, the contact surface is formed on the axial peripheral surface of the connection block, and the end of the driving shaft on the gear unit side projects from the connection block.

Axial piston machine for installation in a gearbox

In an axial piston machine of the swashplate or bent axis type having slot control and a pressure balancing passage at the inlet end of the high pressure (HP) control slot, erosion caused by the jet of the pressure balancing passage is prevented by providing at the inlet end of the HP-control slot an interference jet passage starting from the high pressure whose opening is arranged so that the directions of flow of the pressure balancing passage and the outlet of the interference jet passage intersect.

Growing community of inventors

Villingen-Schwenningen, Germany

Josef Beck