公开(公告)号：US10598167B2

公开(公告)日：2020-03-24

申请号：US15328204

申请日：2015-07-22

Applicant: NTN CORPORATION

Inventor： Takuya Ishii ,  Satoru Fukuzawa ,  Hirohisa Abe ,  Akihiro Oomori

IPC: F04B27/08 ,  F04B1/20 ,  F04B1/14 ,  F01B3/00 ,  F04B27/10 ,  F04B1/2092 ,  F04B1/2085 ,  F04B1/148

Abstract: A swash plate compressor in which a lubricating film is not formed on a sliding contact surface of the swash plate and the piston owing to the use of the semispherical shoe. The semispherical shoe (4) is subjected to sliding contact with the swash plate of the swash plate compressor and the piston thereof. A base material (5) consists of a metallic member having a resin layer (6b) formed on a surface of a planar part (4b) that is subjected to sliding contact with the swash plate. A resin layer (6a) is formed on a surface of a spherical part (4a) to be subjected to sliding contact with the piston. The resin layer (6a) and the resin layer (6b) are integral with each other. At least one portion of the base material (5) is exposed.

公开(公告)号：US11802539B2

公开(公告)日：2023-10-31

申请号：US16646058

申请日：2018-10-24

Applicant: INNAS, BV

Inventor： Peter Augustinus Johannes Achten

IPC: F03C1/06 ,  F04B1/2092 ,  F04B1/24 ,  F04B1/2014 ,  F16D3/205

CPC classification number: F03C1/0642 ,  F03C1/0673 ,  F04B1/2014 ,  F04B1/2092 ,  F04B1/24 ,  F16D3/205 ,  F16D3/2055

Abstract: A hydraulic device (1) comprises a housing (2) and a shaft (3) which is rotatable about a first axis of rotation (4). The shaft (3) has a flange (8), a partly spherical portion (16) and a plurality of pistons (9), which are fixed to the flange (8). The device (1) also has a plurality of cylindrical sleeves (11), wherein each sleeve (11) has a sleeve bottom (13) comprising a sleeve opening (14) including a centreline (23). The sleeves (11) cooperate with the pistons (9) to form respective compression chambers (12) of variable volume. A barrel plate (15) is mounted on the partly spherical portion (16) and has barrel plate ports (21) including respective centrelines (22). The sleeves (11) are rotatable about a second axis of rotation (19) which intersects the first axis of rotation (4) by an acute swash angle. The barrel plate (15) is coupled to the shaft (3) in rotational direction thereof by means of a plurality of pin-groove couplings creating a plurality of pivot axes (24) about the second axis of rotation (19). The widths of the grooves (18) allow the pins (17) to move within the respective corresponding grooves (18) in rotational direction about the second axis of rotation (19) under operating conditions. The relative position of the shaft (3) and the barrel plate (15) in rotational direction about the second axis of rotation (19) is adapted such that under operating conditions each centreline (22) of the respective barrel plate ports (21) fluctuates in rotational direction about the second axis of rotation (19) with respect to the centreline (23) of the corresponding sleeve opening (14) within a range in which the centreline (23) of the sleeve opening (14) lies.

公开(公告)号：US20200277930A1

公开(公告)日：2020-09-03

申请号：US16646058

申请日：2018-10-24

Applicant: INNAS, BV

Inventor： Peter Augustinus Johannes Achten

IPC: F03C1/06 ,  F04B1/2092 ,  F04B1/24

Abstract: A hydraulic device (1) comprises a housing (2) and a shaft (3) which is rotatable about a first axis of rotation (4). The shaft (3) has a flange (8), a partly spherical portion (16) and a plurality of pistons (9), which are fixed to the flange (8). The device (1) also has a plurality of cylindrical sleeves (11), wherein each sleeve (11) has a sleeve bottom (13) comprising a sleeve opening (14) including a centreline (23). The sleeves (11) cooperate with the pistons (9) to form respective compression chambers (12) of variable volume. A barrel plate (15) is mounted on the partly spherical portion (16) and has barrel plate ports (21) including respective centrelines (22). The sleeves (11) are rotatable about a second axis of rotation (19) which intersects the first axis of rotation (4) by an acute swash angle. The barrel plate (15) is coupled to the shaft (3) in rotational direction thereof by means of a plurality of pin-groove couplings creating a plurality of pivot axes (24) about the second axis of rotation (19). The widths of the grooves (18) allow the pins (17) to move within the respective corresponding grooves (18) in rotational direction about the second axis of rotation (19) under operating conditions. The relative position of the shaft (3) and the barrel plate (15) in rotational direction about the second axis of rotation (19) is adapted such that under operating conditions each centreline (22) of the respective barrel plate ports (21) fluctuates in rotational direction about the second axis of rotation (19) with respect to the centreline (23) of the corresponding sleeve opening (14) within a range in which the centreline (23) of the sleeve opening (14) lies.

公开(公告)号：US12228116B2

公开(公告)日：2025-02-18

申请号：US18245580

申请日：2020-09-16

Applicant: BEIJING JODIN TECHNOLOGY CO. LTD

Inventor： Yanyang Liu

IPC: F04B1/00 ,  F04B1/146 ,  F04B1/148 ,  F04B1/2092 ,  F04B1/32 ,  F04B1/328 ,  F04B49/12 ,  F04B53/14 ,  F16C29/06

Abstract: A bent axis plunger-type variable hydraulic motor pump, including a cylinder body, a plunger, a ball connecting rod, a plunger spherical hinge, a multistage ball track spherical hinge shaft, a multistage ball track bearing ring, a retainer plate, an oil distributing plate, an oil distributing plate pin shaft, a suspension circle, a bushing bearing ring, a box bushing shaft, a box, a large variable ball connecting rod assembly, and a small variable ball connecting rod assembly. The large and small variable ball connecting rod assemblies are mounted on the box. The multistage ball track spherical hinge shaft is supported on the multistage ball track bearing ring, and a multistage rolling element holder in which a rolling element is provided is mounted in the multistage ball track spherical hinge shaft. Two ends of the ball connecting rod are hingedly connected to the multistage ball track spherical hinge shaft and the plunger.

公开(公告)号：US11105320B2

公开(公告)日：2021-08-31

申请号：US16548386

申请日：2019-08-22

Applicant: Robert Bosch GmbH

Inventor： Alexander Bidell ,  Christian Hoermann ,  Marcus Herrmann ,  Raimund Roth

IPC: F04B1/328 ,  F04B1/2092 ,  F04B1/146

Abstract: A control plate, for alternatingly fluidically connecting hydrostatic operating chambers, in particular of an oblique axis type axial piston machine, with pressure medium connections, includes a first end face, a second end face, at least a first recess, a first kidney-like control opening, and at least one through-recess. The first face extends transversely to a rotation axis. The second face faces away from the first face. The first recess is bounded in the first end face by the first control opening, and at least partially forms the at least one through recess, which extends toward the second end face from the first end face at an end portion of the first control opening, and which is arranged in or counter to a rotation direction of the rotation axis. An oblique axis construction type axial piston machine includes such a control plate.

公开(公告)号：US10662773B2

公开(公告)日：2020-05-26

申请号：US15815859

申请日：2017-11-17

Applicant: Danfoss Power Solutions GmbH & Co. OHG

Inventor： Anja Fiebing ,  Niels Christophersen ,  Carsten Fiebing

IPC: F15B3/00 ,  F01B3/00 ,  F04B1/324 ,  F03C1/40 ,  F03C1/06 ,  F04B1/2092

Abstract: Hydraulic axial piston unit (1) of the swashplate construction type having a drive shaft (2) adapted to drive or be driven by a cylinder block (4). The cylinder block comprises a plurality of cylinder bores (6), in which several pistons (8) are moveable in general along the rotational axis (10) of the drive shaft (2) and relative to the cylinder bores (6). First ends of the pistons (8) protrude outside of the cylinder bores (6) and are slidable fixed by means of slippers (14) to a swashplate (16). The slippers (14) are hold down in a sliding manner on a sliding surface (18) of the swashplate (16) by means of a slipper hold down ring (20) arranged parallel to the sliding surface (18). The slipper hold down ring (20) is in a sliding contact with its radial inner surface (22) with a matching surface (26) on a guide ball (24) rotationally fixed on the drive shaft (2) and axially moveable in direction of the rotational axis (10) relative to the cylinder block (4) against resilient forces of springs (28) characterized in that a mounting ring (30) is attached to the cylinder block (4) in order to limit the axial movement of the guide ball (24) towards the cylinder block (4).