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1. 发明授权

US11795926B2 Motor-hydraulic machine unit for attachment to a hydraulic assembly 有权
公开(公告)号：US11795926B2
公开(公告)日：2023-10-24
申请号：US16944273
申请日：2020-07-31
申请人： Robert Bosch GmbH
发明人： Benjamin Joa , Matthias Oppelt , Ruben Ertelt
IPC分类号： F04B1/128 , F04B53/00 , F04B1/2078 , F16H39/14 , F04B53/16 , F04B17/03 , F15B7/00 , F16H61/431 , F01B3/00 , F15B15/18 , F03C1/40 , F03C1/06
CPC分类号： F04B1/128 , F04B1/2078 , F04B53/001 , F04B53/16 , F16H39/14 , F01B3/0032 , F03C1/046 , F03C1/0668 , F03C1/0686 , F04B17/03 , F15B7/006 , F15B15/18 , F16H61/431
摘要： A motor-hydraulic machine unit includes an electric motor, a hydraulic machine, and a connection body that has a planar connection surface which delimits first and second working connections. The first and second working connections are each in fluid exchange connection with the hydraulic machine via an assigned first fluid duct in the connection body. The electric motor and the hydraulic machine have a common axis of rotation which is arranged substantially parallel to the connection surface. The hydraulic machine and the electric motor are arranged on opposite sides of the connection body in the direction of the axis of rotation. The connection body is traversed by a drive aperture in the direction of the axis of rotation. The electric motor and the hydraulic machine are in rotary drive connection in a region of the drive aperture.

2. 发明授权

US11333145B2 Cylinder on demand hydraulic device 有权
公开(公告)号：US11333145B2
公开(公告)日：2022-05-17
申请号：US17242880
申请日：2021-04-28
申请人： TONAND INC.
发明人： Antonio Cannata
IPC分类号： F04B49/22 , F04B23/02 , F04B1/182 , F03C1/40 , F03C1/34
摘要： A hydraulic device having a plurality of cylinders for distributing a flow of hydraulic fluid between a reservoir and a load, the device comprising: a housing having the plurality of cylinders with a plurality of corresponding pistons configured for reciprocation of a constant stroke length; an input port of the housing fluidly connected to each cylinder of the plurality of cylinders, the input port facilitating introduction of the hydraulic fluid into said each cylinder; an output port of the housing connected to said each cylinder, the output port facilitating the ejection of the hydraulic fluid from said each cylinder during the reciprocation, the output port configured for fluidly coupling said each cylinder to the load; and a distributor coupled to a main shaft of the hydraulic device, such that the distributor rotates in conjunction with the main shaft, the distributor having a distributor body including a first port configured for fluid communication with the input port and a second port configured for fluid communication with the output port; wherein the first port and the second port are fluidly coupled to the input port and the output port external to a shaft body of the main shaft.

3. 发明授权

US11286775B2 Rotatable piston assembly 有权
公开(公告)号：US11286775B2
公开(公告)日：2022-03-29
申请号：US16160286
申请日：2018-10-15
申请人： Poseidon Fluid Power, LLC
发明人： Douglas A. Hemink
IPC分类号： F04B1/12 , F04B1/16 , F04B1/29 , F04B1/14 , F04B1/28 , F04B1/18 , F04B1/20 , F04B1/30 , F01B3/00 , F01B3/10 , F01B3/02 , F04B1/295 , F04B7/06 , F04B53/18 , F04B1/124 , F03C1/06 , F03C1/40 , F04B1/328 , F04B1/126 , F04B1/128 , F04B1/146 , F04B1/182 , F16H1/28
摘要： A rotatable piston assembly for a reciprocating piston type hydraulic machine includes a rotatable piston configured for a controlled rotation and configured to reciprocate within a cylinder bore of the reciprocating piston type hydraulic machine.

4. 发明授权

US11137330B2 Displacement of an object with hydraulic actuators 有权
公开(公告)号：US11137330B2
公开(公告)日：2021-10-05
申请号：US16253730
申请日：2019-01-22
申请人： ARTEMIS INTELLIGENT POWER LIMITED
发明人： William Hugh Salvin Rampen , Niall Caldwell , Peter Mccurry
IPC分类号： G01N3/36 , F15B15/18 , G01M5/00 , F03C1/34 , F03C1/053 , F04B49/22 , F04B7/00 , F03C1/40 , F03C1/047
摘要： An object is displaced alternately in opposite directions, using a hydraulic power unit having a rotatable body which includes the shaft of a hydraulic machine having electronically commutated valves. A motor drives the rotatable body. The hydraulic machine drives an actuator to displace the object in use. Energy is transformed from rotational kinetic energy of the rotatable body to elastic strain energy or elastic strain and gravitational potential energy of the object during a pumping phase and rotation of the rotatable body slows, but does not change direction. The potential energy then drives the hydraulic machine to motor and the rotatable shaft speeds up again, storing rotational kinetic energy. The displacement of the hydraulic machine is controlled throughout to match a time varying demand taking into account the varying speed of rotation of the rotatable shaft. The motor provides energy to compensate for losses and the process can repeat cyclically.

5. 发明授权

US10808686B2 Hydraulic rotary machine 有权
公开(公告)号：US10808686B2
公开(公告)日：2020-10-20
申请号：US16084848
申请日：2017-03-07
申请人： Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
发明人： Satoshi Maekawa , Naoki Sugano , Kei Morita
IPC分类号： F04B1/2085 , F03C1/06 , F03C1/40 , F04B1/22 , F04B1/324
摘要： A hydraulic rotary machine configured to reduce sliding resistance of a reciprocating piston and to suppress a reduction in volumetric efficiency corresponding to an amount of leakage of hydraulic oil. A piston pump includes a rotor shaft, a cylinder block, a piston head, a piston rod, a retainer, a swash plate, and a tilt regulation mechanism. When the tilt regulation mechanism rocks the swash plate, the amount of discharge from the piston pump is variably changed. The retainer which rotates with both the piston head and the piston rod is supported by a retainer bush provided to the rotor shaft. The retainer sphere section of the retainer and the retainer bush sphere section of the retainer bush have spherical shapes having the same curvature. During the regulation of tilt, the retainer rocks while the retainer bush sphere section is in sliding contact with the retainer bush.

6. 发明授权

US10801467B2 Method for controlling torque equilibrium of a hydraulic motor 有权
公开(公告)号：US10801467B2
公开(公告)日：2020-10-13
申请号：US16347468
申请日：2017-11-02
申请人： DIINEF AS
发明人： Per Nielsen Lindholdt , Geir-Kjetil Nerland , Henrik Bollerup Larsen
IPC分类号： F03C1/34 , F03C1/40 , F04B7/00 , F04B49/03 , F04B49/06
摘要： A method for controlling torque equilibrium of a hydraulic motor, the method includes: setting a torque equilibrium reference position in a control system, setting a reference direction in the control system, determining one or more high-pressure torque producing cylinders towards the torque equilibrium reference position in a reference direction in the control system, and opening a high-pressure valve on each of one or more high-pressure torque producing cylinders to produce a torque towards the torque equilibrium reference position in the reference direction on the drive shaft of the motor.

7. 发明授权

US10590908B2 Hydrostatic axial piston motor of bent-axis construction 有权
公开(公告)号：US10590908B2
公开(公告)日：2020-03-17
申请号：US15817468
申请日：2017-11-20
申请人： Robert Bosch GmbH
发明人： Alexander Bidell , Marcus Herrmann , Thomas Abenstein , Walter Jauernig
IPC分类号： F03C1/40 , F03C1/06 , F04B1/146 , F04B49/22 , F04B1/28 , F04B1/14 , F16H61/423
摘要： 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.

8. 发明授权

US10458387B2 Hydrostatic axial piston machine 有权
公开(公告)号：US10458387B2
公开(公告)日：2019-10-29
申请号：US15364538
申请日：2016-11-30
申请人： Robert Bosch GmbH
发明人： Josef Kopecki
IPC分类号： F03C1/06 , F03C1/34 , F04B1/12 , F04B1/20 , F04B1/22 , F04B1/30 , F03C1/32 , F03C1/40
摘要： A hydrostatic axial piston pump of swashplate construction, which is also configured to be operated as a motor, has a stationary control plate against which a rotating cylinder drum is tensioned. During operation, a tilting tendency of the cylinder drum arises in the direction of that quadrant of the control plate which is operatively connected to the first part of the displacement stroke of the pistons. The control plate has a supporting device configured for the cylinder drum. The supporting device is arranged adjacent to an outer edge of the control plate in the first quadrant thereof. The supporting device is configured to be formed by a hydrostatically relieved additional field.

9. 发明授权

US10253770B2 Hydraulic pump assembly for a vehicle 有权
公开(公告)号：US10253770B2
公开(公告)日：2019-04-09
申请号：US15114197
申请日：2015-01-31
申请人： BorgWarner TorqTransfer Systems AB
发明人： Bo Lundstrom
IPC分类号： F04B49/035 , F04B49/22 , F04B1/12 , F04B1/18 , F04B1/34 , F03C1/40 , F04B17/03 , F15B11/08 , F15B13/02
摘要： A hydraulic pump assembly for a vehicle is provided, comprising an electrical motor, a hydraulic pump driven by the electrical motor, and a centrifugal regulator connected with a pressure overflow valve connected to the oil outlet of the hydraulic pump, characterized in that the pump assembly further comprises at least two input check valves and at least two output check valves arranged such that a first pressure outlet port is formed when the motor is rotating in a first direction, and a second pressure outlet port is formed when the motor is rotating in an opposite direction.

10. 发明授权

US09976641B2 Hydraulic transmission 有权
公开(公告)号：US09976641B2
公开(公告)日：2018-05-22
申请号：US15022397
申请日：2014-02-25
申请人： Artemis Intelligent Power Limited
发明人： Niall Caldwell , Daniel Abrahams , Daniil Dumnov
IPC分类号： F16D31/02 , F16H39/16 , F04B49/06 , F04B49/22 , F03D7/02 , F04B1/053 , F04B1/06 , F04B11/00 , F04B17/02 , F03C1/40 , F03C1/053 , F16H61/4183 , F03D15/00 , F03D9/28 , F16H61/431
CPC分类号： F16H39/16 , F03C1/0447 , F03C1/045 , F03C1/053 , F03C1/0531 , F03D7/0296 , F03D9/25 , F03D9/28 , F03D9/32 , F03D15/00 , F04B1/053 , F04B1/0531 , F04B1/06 , F04B1/063 , F04B11/00 , F04B11/0075 , F04B17/02 , F04B49/065 , F04B49/22 , F05B2260/406 , F16H61/4183 , F16H61/431 , Y02E10/722 , Y02E10/723 , Y02P80/158
摘要： A hydraulic transmission comprising a variable displacement pump and motor, at least one having cylinders having valves which are controllable on each cycle of cylinder working volume to determine the net displacement of working fluid by the cylinder. The transmission has a valve control module which determines a displacement of the pump and the motor by specifying a displacement demand. The pump and/or motor valve control module determine the frequency of intensity peaks in the frequency spectrum of the pattern of cylinders carrying out active and inactive cycles of cylinder working volume using a first procedure and, if these will fall within disallowed frequency bands including the resonant frequency of components with which the transmission is in mechanical communication, the displacement demand, or another input, is periodically modified to suppress generation of those frequencies. The hydraulic transmission is useful for example in a wind turbine generator, or a vehicle.

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