-
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
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
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
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
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.
-
Patent Agency Ranking
36.发明申请公开(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
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：US12049970B2
公开(公告)日：2024-07-30
申请号：US17425700
申请日：2020-01-13
Applicant: Danfoss Power Solutions II Technology A/S
Inventor： Erhan Aptiogullari , Hasan Donmez , Ozgur Caliskan , Salih Karayagiz , Recep Muco , Ilkay Dede
IPC: F16L23/028 , F16L23/00 , F16L25/00 , F16L33/28
CPC classification number: F16L23/0286 , F16L23/003 , F16L33/28 , F16L25/0036
Abstract: Flange for a hose (2), which flange comprises: —an annular flange body (4) having a central hose opening (5); —an annular locking element (9) for locking the annular flange body (4) in a circumferential groove (3) of a hose (2), which annular locking element (9) is composed out of at least two generally arc shaped locking element parts (9), wherein the annular locking element (9) is concentrically arranged in the central hose opening (5) of the annular flange body (4); and —couplings (7, 8) for each of the at least two generally arc shaped locking element parts (9), wherein each coupling (7, 8) has a first coupling part (7) arranged on the annular flange body (4) and a second coupling part (8) arranged on the respective arc shaped locking element part (9), which first coupling part (7) couples to the second coupling part (8).
-
39.发明授权公开(公告)号：US12018462B2
公开(公告)日：2024-06-25
申请号：US17256818
申请日：2019-06-29
Applicant: DANFOSS POWER SOLUTIONS II TECHNOLOGY A/S
Inventor： Aaron H. Jagoda
CPC classification number: E02F9/264 , E02F9/2041 , E02F9/265
Abstract: A hydraulic machine can include one or movable loads and one or more control units associated with actuators operating the movable loads. The control units can include an accelerometer, a gyroscope, and a magnetometer, the accelerometer being adapted to detect an orientation of the control unit relative to a gravity force vector, the magnetometer being adapted to detect an orientation of the control unit relative to a fixed magnetic field, and the gyroscope being adapted to detect yaw, pitch and roll, rates of the control unit. The magnetometer can be used to align the data from the control units such that the position, orientation, and velocity of the movable loads, including an end effector of the hydraulic machine, can be determined and controlled.
-
公开(公告)号：US20230063904A1
公开(公告)日：2023-03-02
申请号：US17795651
申请日：2020-12-30
Applicant: Danfoss Power Solutions II Technology A/S
Inventor： Kenneth Marshall BEFUS
Abstract: A system and method for detecting the functional state of a piloted or direct-operated isolation valve in a hydraulic circuit is presented. In some examples the hydraulic circuit is a steering circuit and the isolation valve provides selective isolation between a hydraulic actuator and one or more metering valves. In some examples, the isolation valve assembly is movable between a first position, in which fluid flow between the metering valve and the actuator is enabled, and a second position, in which fluid flow between the metering valve and the actuator is blocked. When the isolation valve assembly is moved to one of the first and second positions, an inlet port and a pressure sensing port of the isolation valve assembly are placed in fluid communication with each other. When the isolation valve assembly is moved to the other of the first or second position, a second inlet port and the pressure sensing port are placed in fluid communication.
-
-
-
-
-
-
-
-
-
Search Results
54
records
(took 0.023 seconds)
