Robert Boschgmbh

Brueninghaus Hydromatik Gmbh

Walter Jauernig

Thomas Abenstein

Marcus Herrmann

Alexander Bidell

Herbert Kurz

A variable-displacement hydrostatic axial piston motor of bent-axis construction includes a drive shaft, a cylinder drum that pivots in a pivoting plane, and a one-piece port plate nearly symmetrical with a central plane and with two working ports. The motor further includes an adjusting device with an adjusting piston arranged in the port plate, a control valve arranged on the port plate and with a control valve piston, a feedback spring arranged in the port plate and clamped between the adjusting piston and the control valve piston, a counterbalance valve with a counterbalance spool, and two secondary pressure-limiting valves inserted as cartridge-type inserts into the port plate. The counterbalance spool is accommodated in a valve bore in the port plate. The two working ports are situated on the port plate opposite to the first side. The two secondary pressure-limiting valves are arranged on the same side as the port surfaces.

Hydrostatic axial piston motor of bent-axis construction

The invention relates to an axial piston machine () comprising a housing () in which a drive disk () and a cylinder block () axially disposed next to it are received so as to be rotatable relative to each other about longitudinal center axes (). These axes run obliquely at an angle (W) relative to each other in an oblique axis plane (E). A cam disk () is disposed on the front of the cylinder block () facing away from the drive disk () and is supported on the housing () by means of a positioning device () with positively engaging positioning elements (). A guide element () having a guide center axis () running coaxially to the longitudinal center axis () of the cylinder block () is disposed on the side facing the cylinder block (). In order to provide for a simple construction and to allow for a step-wise modification of the throughput, the positioning element () disposed on the cam disk () is set off in the oblique axis plane (E) at an angle to the guide center axis (). The cam disk () can be mounted in a second position, rotated relative to the guide center axis () by approximately 180&#xb0;, in which the positioning elements () are also functionally linked.

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Guenzburg, Germany

Walter Jauernig