公开(公告)号：US12104735B2

公开(公告)日：2024-10-01

申请号：US17600802

申请日：2020-03-24

Applicant: Danfoss Power Solutions II Technology A/S

Inventor： Sebastian Lafond ,  Atul Puranik ,  Vijay Surve

IPC: H01R13/62 ,  F16L37/18 ,  F16L37/20 ,  F16L37/56 ,  H01R13/518 ,  H01R13/629 ,  H01R13/631

CPC classification number: F16L37/56 ,  F16L37/18 ,  F16L37/20 ,  H01R13/518 ,  H01R13/62944 ,  H01R13/631

Abstract: The invention relates to a coupling device for simultaneously coupling and decoupling a number of coupling pairs, which coupling device includes:—a number of coupling pairs, each having a first coupling part and a second coupling part; —a first mounting frame on which the first coupling parts of the number of coupling pairs are arranged; —a second mounting frame arranged parallel to the first mounting frame, wherein the second coupling parts of the number of coupling pairs are arranged to the second mounting frame, and wherein the second mounting frame is movable towards to and away from the first mounting frame between a connected position, in which each first coupling part is connected with the corresponding second coupling part, and a disconnected position; —guiding mechanism arranged to the first mounting frame and the second mounting frame for guiding the movement between the connected and disconnected position; —at least one rack and pinion drive arranged between the first and second mounting frame, wherein the pinion is arranged on a shaft rotatable arranged in the first mounting frame and wherein the rack extends from the second mounting frame in the direction of movement of said second mounting frame into the first mounting frame along the pinion; wherein the shaft extends with at least one end out of the first mounting frame and wherein an operating lever is arranged on the shaft.

公开(公告)号：US20240068613A1

公开(公告)日：2024-02-29

申请号：US18454294

申请日：2023-08-23

Applicant: Danfoss Power Solutions II Technology A/S

Inventor： Okan Cebeci ,  Erhan Aptiogullari ,  Recep Can ,  Recep Muco ,  Özgür Caliskan

IPC: F16L39/00 ,  F16L39/02

CPC classification number: F16L39/005 ,  F16L39/02

Abstract: An arrangement (1, 2) of a coupling (3) and a double-walled tube or hose (4). The double-walled tube or hose (4) includes two coaxially arranged sheaths (5, 6). The coupling (3) includes: a first, inner sleeve (14), surrounding an inner fluid conduit (7) for transfer of a first fluid, wherein the inner fluid conduit (7) is configured to fluidly connect with the fluid conduit (7) formed by the first, inner sheath (14) of the flexible tube or hose (4); a second sleeve (15), surrounding the first, inner sleeve (14); a third sleeve (16), surrounding the second sleeve (15); and a fourth, outer sleeve (17), surrounding the third sleeve (16). The first (14) and the second (15) sleeve form a receiving space (27) for receiving the first, inner sheath (5) of an end (13) of the double-walled flexible tube or hose (4); the third (16) and fourth (17) sleeve form a receiving space (28) for receiving an end (13) of a second, outer sheath (6) of the double-walled flexible tube or hose (4); and the second (15) and third (16) sleeve form an outer fluid conduit (23) for transfer of a second fluid, wherein the outer fluid conduit (23) is configured to fluidly connect with the fluid conduit formed by the clearance (8) between the first, inner (5) and the second, outer sheath (6) of the double-walled flexible tube or hose (4). The fluid connector part (19) of the inner fluid conduit (7) of the coupling (3) and the fluid connector part (25) of the outer fluid conduit (23) of the coupling (3) are displaced from each other in an axial direction of the coupling (3).

公开(公告)号：US11598448B2

公开(公告)日：2023-03-07

申请号：US16906172

申请日：2020-06-19

Applicant: DANFOSS POWER SOLUTIONS II TECHNOLOGY A/S

Inventor： Aaron Hertzel Jagoda

IPC: F16K31/00 ,  E02F9/20 ,  F16K37/00 ,  E02F9/22 ,  F15B13/08 ,  F16K31/06 ,  G01H11/06 ,  F15B13/043 ,  F15B11/16

Abstract: The present disclosure relates to a valve assembly including a valve moveable between an open position where hydraulic fluid flow is permitted between first and second ports of the valve and a closed position where hydraulic fluid flow is blocked between the first and second ports. A characteristic vibration is generated by turbulent hydraulic fluid flow within the valve when hydraulic fluid flow is first initiated between the first and second ports as the valve moves from the closed position toward the open position. The valve assembly also includes a controller for providing electrical current to control movement of the valve via a solenoid. The controller includes an accelerometer for sensing the characteristic vibration. The controller identifies an electrical current value of the electrical current at a time when the characteristic vibration is detected.

公开(公告)号：US11566399B2

公开(公告)日：2023-01-31

申请号：US16740682

申请日：2020-01-13

Applicant: DANFOSS POWER SOLUTIONS II TECHNOLOGY A/S

Inventor： Michael Berne Rannow ,  Vishal Vijay Mahulkar

IPC: F15B19/00 ,  E02F9/22 ,  E02F9/24 ,  F15B11/15 ,  F15B20/00

Abstract: A system and method for the controlled lowering and lifting of a load are disclosed. The system and method may include operating a work machine having a hydraulic system including a hydraulic actuator for supporting a load, a first control valve in fluid communication with the actuator, and a controller for operating the first control valve. In one embodiment, the controller includes a first algorithm for operating the first control valve in a load lowering operation. When an operational fault within the hydraulic system is detected, the controller can be configured to enter into a safe lowering mode. In the safe lowering mode, the first algorithm is disabled and a pulse width modulation (PWM) current is sent from the controller to the first control valve. A user interface is provided to allow an operator to control the PWM current duty ratio to allow the load supported by the actuator to be lowered.

公开(公告)号：US20220341828A1

公开(公告)日：2022-10-27

申请号：US17640562

申请日：2020-09-03

Applicant: Danfoss Power Solutions II Technology A/S

Inventor： Gökhan ÖZCAN ,  Mustafa Ercan ERGUR ,  Temel OZTURK ,  Mithat IVRINDILIOGLU ,  Serdar DURSUN

IPC: G01N3/20 ,  G01M5/00

Abstract: Bend test apparatus (100) for a hydraulic hose (200), the apparatus (100) comprising a main rack (10), at least one sliding rail (11) extending in a longitudinal direction (L) and a carriage (13) which is slidable on the sliding rail (11) in the longitudinal direction (L) and which can be displaced by an actuator (20), wherein the apparatus (100) further comprises a first fixture (1) that is rigidly attached to the main rack (10) to retain a first end (201) of the hydraulic hose (200) and a second fixture (2) that is rigidly attached to the carriage (13) to retain a second end (201) of the hydraulic hose (200), and wherein the apparatus (100) comprises a load cell (30) that is attached between the carriage (13) and the actuator (20) so as to detect a force (F) which is applied via the actuator (20) onto the carriage (13) and thereby onto the hydraulic hose (200) in the longitudinal direction (L).

公开(公告)号：US11459220B2

公开(公告)日：2022-10-04

申请号：US16202228

申请日：2018-11-28

Applicant: Danfoss Power Solutions II Technology A/S

Inventor： Nilesh Anant Sutar ,  Muzammil Qayyumoddin Quazi

IPC: F15B11/16 ,  B66F7/08 ,  F15B13/04 ,  B66F11/04

Abstract: A hydraulic system includes a pump in communication with a fluid reservoir and powered by a motor. A pressure compensator is adapted to adjust a position of a variable displacement mechanism of the pump. A load sensing line is adapted to communicate a highest load sensing pressure from a plurality of valves to the pressure compensator. The pressure compensator adjusts the variable displacement mechanism of the pump based on the highest load sensing pressure for maintaining a constant pressure drop across one or more work ports in each of the plurality of valves. The plurality of valves each include a load sense port having an integrated check valve that includes a metering orifice.

公开(公告)号：US20220282800A1

公开(公告)日：2022-09-08

申请号：US17748649

申请日：2022-05-19

Applicant: DANFOSS POWER SOLUTIONS II TECHNOLOGY A/S

Inventor： Aaron Hertzel Jagoda

IPC: F16K31/42 ,  F16K17/36 ,  F16K31/06

Abstract: A valve assembly includes a valve moveable between an open position where hydraulic fluid flow is permitted and a closed position where hydraulic fluid flow is blocked. A controller includes a magnetometer adapted to measure a magnetic flux through at least a portion of a solenoid linear actuator that moves the valve. A magnetic flux value measured by the magnetometer corresponds to a linear position of the regulating member relative to the port.

公开(公告)号：US11326627B2

公开(公告)日：2022-05-10

申请号：US16938221

申请日：2020-07-24

Applicant: DANFOSS POWER SOLUTIONS II TECHNOLOGY A/S

Inventor： Michael Berne Rannow ,  Meng Wang

IPC: F15B11/00 ,  E02F9/22 ,  B66C13/06 ,  E04G21/04 ,  F15B11/044

Abstract: A hydraulic system (600) and method for reducing boom dynamics of a boom (30), while providing counter-balance valve protection, includes a hydraulic cylinder (110), first and second counter-balance valves (300, 400), and first and second control valves (700, 800). A net load (90) is supported by a first chamber (116, 118) of the hydraulic cylinder, and a second chamber (118, 116) of the hydraulic cylinder may receive fluctuating hydraulic fluid flow from the second control valve to produce a vibratory response (950) that counters environmental vibrations (960) on the boom. The first control valve may apply a holding pressure and thereby hold the first counter-balance valve closed and the second counter-balance valve open.

公开(公告)号：US12188597B2

公开(公告)日：2025-01-07

申请号：US17997302

申请日：2021-04-28

Applicant: Danfoss Power Solutions II Technology A/S

Inventor： Amit Ramesh Shende ,  Sébastien Lafond ,  Joffrey Boutherin

IPC: F16L37/23 ,  F16L37/62

Abstract: An improved quick release coupling is provided. The quick release coupling enables higher fluid flow rates and lower pressure drops. The quick release coupling is configured to be a connection and disconnection under high pressure conditions on one or both of the male and the female sides of the coupling. The quick release coupling enables intentional manual disconnection as well as breakaway disconnection under high working pressures.

公开(公告)号：US11713778B2

公开(公告)日：2023-08-01

申请号：US17613190

申请日：2020-05-21

Applicant: Danfoss Power Solutions II Technology A/S

Inventor： Meng Wang ,  Mohd Azrin Mohd Zulkefli

IPC: F15B15/18 ,  F15B21/08

CPC classification number: F15B15/18 ,  F15B21/082 ,  F15B2211/20515 ,  F15B2211/20561 ,  F15B2211/20569 ,  F15B2211/27 ,  F15B2211/3057 ,  F15B2211/613 ,  F15B2211/6313 ,  F15B2211/6658

Abstract: The present disclosure relates to a blended or hybrid power system with increased operating efficiency. The blended power system combines the advantages of electrical power with the advantages of hydraulic power when delivering power to a hydraulic actuator. The hydraulic power provides higher power density and the electrical power provides high efficiency and control accuracy in the blended power system. In a blended power system, a control system may be configured to select different modes of operation based on the loads encountered in the combined hydraulic and electrohydrostatic system. The blended power system also allows for smooth and uninterrupted transitions between the different modes of operation within the blended power system. Thus, jerkiness in the blended power system may be minimized or eliminated.