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31. 发明专利

SE465281B 未知
公开(公告)号：SE465281B
公开(公告)日：1991-08-19
申请号：SE8703620
申请日：1987-09-18
申请人： VOLVO HYDRAULIK AB
发明人： GULBRANDSEN S , EKDAHL S , LARSSON B , ALM F
IPC分类号： F03C1/06 , F03C1/253 , F04B1/2007 , F04B1/24
摘要： A device for biasing a cylinder drum in a variable-displacement axial piston machine against an associated slide valve member comprises a compression spring means, the axial piston machine having between the cylinder drum and the drive disk a synchronizing shaft which at each of its ends has a universal joint of the so-called tripoid type for angularly rigid but pivotable connection with the drum and disk, respectively, the synchronizing shaft furthermore being supported at each end approximately axially from the cylinder drum and drive disk, respectively, by a link pin. In order to provide a biasing device which requires less space adjacent the cylinder drum and thus allows a more compact design thereof, the compression spring means is mounted between a link pin bearing cup axially movably arranged in the center of the drive disk, and an abutment means, which is co-axial with and adjustably secured to said disk and the machine shaft associated therewith, such that the biasing force is applied to the drum from said abutment means under the intermediation of the synchronizing shaft.

32. 发明专利

SE8703620L 未知
公开(公告)号：SE8703620L
公开(公告)日：1989-03-19
申请号：SE8703620
申请日：1987-09-18
申请人： VOLVO HYDRAULIK AB
发明人： GULBRANDSEN S , EKDAHL S , LARSSON B , ALM F
IPC分类号： F03C1/06 , F03C1/253 , F04B1/2007 , F04B1/24
摘要： A device for biasing a cylinder drum in a variable-displacement axial piston machine against an associated slide valve member comprises a compression spring means, the axial piston machine having between the cylinder drum and the drive disk a synchronizing shaft which at each of its ends has a universal joint of the so-called tripoid type for angularly rigid but pivotable connection with the drum and disk, respectively, the synchronizing shaft furthermore being supported at each end approximately axially from the cylinder drum and drive disk, respectively, by a link pin. In order to provide a biasing device which requires less space adjacent the cylinder drum and thus allows a more compact design thereof, the compression spring means is mounted between a link pin bearing cup axially movably arranged in the center of the drive disk, and an abutment means, which is co-axial with and adjustably secured to said disk and the machine shaft associated therewith, such that the biasing force is applied to the drum from said abutment means under the intermediation of the synchronizing shaft.

33. 发明专利

SE8703620D0 未知
公开(公告)号：SE8703620D0
公开(公告)日：1987-09-18
申请号：SE8703620
申请日：1987-09-18
申请人： VOLVO HYDRAULIK AB
发明人： GULBRANDSEN S , EKDAHL S , LARSSON B , ALM F
IPC分类号： F03C1/06 , F03C1/253 , F04B1/2007 , F04B1/24
摘要： A device for biasing a cylinder drum in a variable-displacement axial piston machine against an associated slide valve member comprises a compression spring means, the axial piston machine having between the cylinder drum and the drive disk a synchronizing shaft which at each of its ends has a universal joint of the so-called tripoid type for angularly rigid but pivotable connection with the drum and disk, respectively, the synchronizing shaft furthermore being supported at each end approximately axially from the cylinder drum and drive disk, respectively, by a link pin. In order to provide a biasing device which requires less space adjacent the cylinder drum and thus allows a more compact design thereof, the compression spring means is mounted between a link pin bearing cup axially movably arranged in the center of the drive disk, and an abutment means, which is co-axial with and adjustably secured to said disk and the machine shaft associated therewith, such that the biasing force is applied to the drum from said abutment means under the intermediation of the synchronizing shaft.

34. 发明授权

US11591910B2 Rotary axial piston machine with hydrostatic pressing device seal arrangement 有权
公开(公告)号：US11591910B2
公开(公告)日：2023-02-28
申请号：US17158679
申请日：2021-01-26
申请人： Robert Bosch GmbH
发明人： David Breuer , Timo Nafz
IPC分类号： F04B1/2035 , F04B1/2042 , F04B1/2078 , F03C1/06 , F04B1/2007 , F04B1/2021 , F01B3/00
摘要： A hydrostatic axial piston machine includes a pressing pressure chamber for the cylinder drum which is supplied with pressing pressure from a circular-arc-like elongate hole of a distributor plate or from a plurality of connection channels of the cylinder drum. The pressing pressure chamber is delimited radially outwardly by the cylinder drum and radially inwardly by the drive shaft. The pressing pressure chamber is delimited axially at both sides by seals which are both arranged between the radially inner rotating drive shaft and a radially outer stationary component. The radially outer component may be the cylinder drum or, in the case of the distributor-plate-side seal, also a gap seal between the drive shaft and a bearing bush of the distributor plate. Both seals are arranged at the distributor plate side with respect to a tooth arrangement or a retraction ball.

35. 发明授权

US11236736B2 Axial piston pump with port plate having balance feed aperture relief feature 有权
公开(公告)号：US11236736B2
公开(公告)日：2022-02-01
申请号：US16586672
申请日：2019-09-27
申请人： HONEYWELL INTERNATIONAL INC.
发明人： Abigail Parsons , William Scott Rowan , Larry Portolese
IPC分类号： F04B11/00 , F04B53/16 , F04B1/2021 , F04B1/20 , F04B1/2007
摘要： A piston pump includes a ported member that is moveably disposed within an internal space of a housing between a rotating group and the housing. The ported member includes a first face facing the rotating group and a second face facing a fluid inlet and outlet. The ported member includes an intake port and a discharge port. Moreover, the ported member includes a balance aperture configured to pass fluid between the biasing member and a pump chamber as the rotating group rotates within the internal space such that the biasing member biases the ported member toward a balanced position within the internal space. The balance aperture has a rim at the first face. The rim is clefted at a relief feature of the first face. The relief feature is recessed into the first face.

36. 发明授权

US11002244B2 Hydrostatic axial piston machine 有权
公开(公告)号：US11002244B2
公开(公告)日：2021-05-11
申请号：US16377518
申请日：2019-04-08
申请人： Robert Bosch GmbH
发明人： Timo Nafz
IPC分类号： F03C1/28 , F04B1/126 , F04B1/2078 , F04B1/2035 , F04B1/2007 , F03C1/06 , F04B1/324 , F04B1/2085 , F03C1/40 , F04B1/128 , F04B1/20
摘要： A hydrostatic axial piston machine includes a housing, a connection plate closing the housing, working connections formed on the connection plate, a drive shaft, a swashplate, a cylinder drum coupled to the shaft in the direction of rotation, bores formed in the drum and each including a piston, a control plate against which the drum bears, a retraction plate for removing a piston from the bores, and a retraction ball arranged in front of the first end face of the drum which surrounds a drum neck of the drum and the shaft and by which the retraction plate is loaded in the direction of the swashplate. A pressure chamber is defined by seals between the retraction ball, the drum, and the shaft, and is configured to be acted upon by a pressure above a housing pressure. The retraction ball is sealed against the drum neck and against the shaft.

37. 发明专利

RU2008149004A АКСИАЛЬНО-ПОРШНЕВАЯ ГИДРОМАШИНА 未知
公开(公告)号：RU2008149004A
公开(公告)日：2010-06-20
申请号：RU2008149004
申请日：2008-12-11
IPC分类号： F04B1/124 , F04B1/2007 , F04B1/2092
摘要： Аксиально-поршневаягидромашина, содержащаякорпус, вподшипникахкоторогоразмещенвращающийсяблокцилиндровс поршнями, кинематическисвязаннымис неподвижнымнаклоннымдискоми вращающимсяприжимнымдиском, отличающаясятем, чтокаждыйпоршеньразмещенв гильзе, наружнаяопорнаяповерхностькоторойимеетформусферы, установленнойв гнездеблокас возможностьюпространственногокачания, аторецкаждогопоршнявыполненплоским, снабженполостьюгидростатическойразгрузкии установленс возможностьюскольженияпоплоскойповерхностинаклонногодиска, образуяс нейнизшуюкинематическуюпару, причемпоршеньснабженбуртом, контактирующимс плоскойповерхностьюприжимногодиска.

38. 发明专利

CA2563780A1 LARGE ANGLE SLIDING VALVE PLATE PUMP/MOTOR 未知
公开(公告)号：CA2563780A1
公开(公告)日：2005-11-10
申请号：CA2563780
申请日：2005-04-20
申请人： GOVERNMENT OF THE US ADMINISTRATOR OF THE U S ENVIRONMENTAL PROTECTION AGENCY
发明人： GRAY CHARLES L
IPC分类号： F04B1/2007 , F01B3/00 , F04B1/20 , F04B1/2014 , F04B1/32 , F04B1/324
摘要： A pump/motor includes a back plate having first and second fluid ports configured to be differentially pressurized, first and second reaction plates rigidly coupled to the back plate, and a valve plate slideably coupled to the back plate and having first and second fluid feed channels configured to receive fluid from the first and second fluid ports. A plurality of hold-down pistons is positioned in respective hold-down cylinders formed in the valve plate. Each of the hold-down pistons is configured to be biased, by pressurized fluid in the respective hold-down cylinder, against a surface of one of the reaction plates. A barrel, having a plurality of drive cylinders, is rotatably coupled to the valve plate. Drive pistons positioned in the drive cylinders are biased against a thrust plate by pressurized fluid in the drive cylinders. The thrust plate is coupled to an output shaft of the pump/motor.

39. 发明专利

RU2232290C1 AXIAL-PISTON HYDRAULIC MACHINE 未知
公开(公告)号：RU2232290C1
公开(公告)日：2004-07-10
申请号：RU2003107060
申请日：2003-03-14
IPC分类号： F04B1/20 , F04B1/2007
摘要： FIELD: hydraulic machinery; hydraulic drives of different application. ^ SUBSTANCE: according to invention, surface of at least one of sealing belts of distributor located from side of low-pressure ports in hydraulically connected with space of high-pressure ports. Working liquid from high-pressure space is delivered to distributor-to-cylinder block sealed surface located from side of low-pressure ports which makes it possible to decrease tapering of clearance between cylinder block and distributor, to prevent getting of large-size impurities into clearance and thus prevent scoring of working surfaces. ^ EFFECT: increased efficiency and service life of hydraulic machine. ^ 2 dwg

40. 发明专利

DE3831556C2 未知
公开(公告)号：DE3831556C2
公开(公告)日：1997-09-11
申请号：DE3831556
申请日：1988-09-16
申请人： VOAC HYDRAULICS AB
发明人： ALM FILIP , GULBRANDSEN SVEN , LARSSON BO , EKDAHL SUNE
IPC分类号： F03C1/06 , F03C1/253 , F04B1/2007 , F04B1/24 , F04B1/32
摘要： A device for biasing a cylinder drum in a variable-displacement axial piston machine against an associated slide valve member comprises a compression spring means, the axial piston machine having between the cylinder drum and the drive disk a synchronizing shaft which at each of its ends has a universal joint of the so-called tripoid type for angularly rigid but pivotable connection with the drum and disk, respectively, the synchronizing shaft furthermore being supported at each end approximately axially from the cylinder drum and drive disk, respectively, by a link pin. In order to provide a biasing device which requires less space adjacent the cylinder drum and thus allows a more compact design thereof, the compression spring means is mounted between a link pin bearing cup axially movably arranged in the center of the drive disk, and an abutment means, which is co-axial with and adjustably secured to said disk and the machine shaft associated therewith, such that the biasing force is applied to the drum from said abutment means under the intermediation of the synchronizing shaft.

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