An internal-gear machine with diagonal bores for the connection of the hydrostatic bearing for a ring gear with a pressure - main channel

摘要

An internal-gear machine, which is designed as a pump or motor, with a housing comprising multiple housing parts (11), in which at least two in a region of the tooth engagement (89) meshing toothed wheels (31, 57) are arranged, which are at least an externally toothed pinion (31) and by at least one internally toothed hollow gear (57), which with respect to the pinion (31) is mounted eccentrically, wherein said pinion (31) about an axis of rotation (38) is rotatably mounted, and wherein the ring gear (57) in order to achieve a extending in an axial direction (17) extending axis of rotation (60) in a circumferential direction (66) is rotatably mounted, and wherein the ring gear (57) a plurality of ring gear - teeth (59) which, in the circumferential direction (66) is considered, the annular gear - tooth gaps (68), and wherein the ring gear (57) a plurality of, in each case, in a direction transverse to the axial direction (66) extending openings (95.1, 95.2) engaging, respectively, a ring gear - tooth space of the ring gear - tooth gaps (68) and the in each case to a radially outwardly pointing outer peripheral surface (69) of the ring gear (57) are open, and wherein in one of the outer circumferential surface (69) of the ring gear (57) opposite housing part (12.3) of the housing (11) a plurality of to the annular gear (57) and by means of which is open towards the seal flanges (39; 39.1, 39.2, 39.3; 39.4, 39.5, 39.6) limited pressure pockets (41.1, 41.2) for the hydrostatic bearing of the ring gear (57) are provided, and wherein, in a first pressure pocket (40.1) of the pressure pockets (40.1, 40.2) at least a first pressure duct (41.1) with a first pressure duct - end (41.1.1) opens, and wherein, in a second pressure pocket (40.2) of the pressure pockets (40.1, 40.2) at least a second pressure duct (41.2) with a first pressure duct - end (41.2.1) opens, and wherein the first pressure duct (41.1) and the second pressure duct (41.2) in the housing part (12.3) in each case with a second pressure duct - end (41.1.2, 41.2.2) in a common pressure - main channel (50) open,characterized by the,that the first pressure duct (41.1) are arranged in the direction of a first bore - central axis (51.1) extending circular cylindrical first oblique bore (41.1) is designed, the first bore - central axis (51.1) a first angle (52.1) to the axis of rotation (38) of the pinion (31) and / or to the axis of rotation (60) of the ring gear (57) into which is smaller than 90 degrees and which is greater than 0 degrees,and in that the second pressure duct (41.2) are arranged in the direction of a second bore - central axis (51.2) extending circular cylindrical second diagonal bore hole (41.2) is designed, the second bore - central axis (51.2), a second angle (52.2) to the axis of rotation (38) of the pinion (31) and / or to the axis of rotation (60) of the ring gear (57) into which is smaller than 90 degrees and which is greater than 0 degrees.