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公开(公告)号：US11693433B2
公开(公告)日：2023-07-04
申请号：US16704040
申请日：2019-12-05
IPC分类号： G05D7/01
CPC分类号： G05D7/0186
摘要： A thermal relief device (1) is described comprising a housing (2) having an inlet (3) and an outlet (4) connected by a relief channel (5). Such a thermal relief device should have a simple construction. To this end a microporous structure (10) is arranged between inlet (3) and outlet (4).
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公开(公告)号：US10953914B2
公开(公告)日：2021-03-23
申请号：US15970297
申请日：2018-05-03
发明人： Niels Arbjerg , Charles Anthony Bates , Poul Ennemark , Mogens Frederiksen , Casper Mikael Olesen
摘要： A hydraulic steering unit (1) is described, said hydraulic steering unit (1) comprising a supply port arrangement having a pressure port (P) connected to a main flow path (3) and a tank port (T) connected to a tank flow path (4), a working port arrangement having a left working port (L) connected to a left working flow path (5) and a right working port (R) connected to a right working flow path (6), a bridge arrangement (14) of variable orifices having a first left orifice (A2L) connected to the main flow path (3) and to the left working flow path (5), a first right orifice (A2R) connected to the main flow path (3) and to the right working flow path (6), a second left orifice (A3L) connected to the left working flow path (5) and to the tank flow path (4), and a second right orifice (A3R) connected to the right working flow path (6) and to the tank flow path (4). Such a hydraulic steering unit should be operated together with a pressure source of fixed displacements. To this end an idle flow path (15) branches off the main flow path (3), wherein a variable idle orifice (An) is arranged in the idle flow path (15), the idle orifice (An) being open in neutral position and closing out of neutral position.
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公开(公告)号：US20210024125A1
公开(公告)日：2021-01-28
申请号：US17042364
申请日：2019-05-16
发明人： Mogens Frederiksen , Poul Ennemark , Casper Mikael Olesen , Niels Arbjerg , Charles Anthony Bates
摘要： A hydraulic steering unit (1) is described comprising a supply port arrangement having a pressure port (P) connected to a main flow path (2) and a tank port (T) connected to a tank flow path (3), a working port arrangement having a left working port (L) connected to a left working flow path (9) and a right working port (R) connected to a right working flow path (10), a first bridge arrangement (15a, 15b) of variable orifices having a first left orifice (A2L) connected to the main flow path (2) and to a first left connecting point (16) at the left working flow path (9), a first right orifice (A2R) connected to the main flow path (2) and to a first right connecting point (17) at the right working flow path (10), a second left orifice (A3L) connected to the first left connecting point (16) at the left working flow path (9) and to the tank flow path (3), and a second right orifice (A3R) connected to the first right connecting point (17) at the right working flow path (10) and to the tank flow path (3). It should be possible to change the steering characteristics of such a steering unit. This is achieved by at least a second bridge arrangement (20a, 20b) of variable orifices having a third left orifice (A2L′) connected to the main flow path (2) and to a second left connecting point (21) at the left working flow path (9), a third right orifice (A2R′) connected to the main flow path (2) and to a second right connecting point (22) at the right working flow path (10), a fourth left orifice (A3L′) connected to the second left connecting point (21) at the left working flow path (9) and to the tank flow path (3), and a fourth right orifice (A3R′) connected to the second right connecting point (22) at the right working flow path (10) and to the tank flow path (3), wherein the first bridge arrangement (15a, 15b) and the second bridge arrangement (20a, 20b) have different steering characteristics, and by selection means (23) connecting at least one of the bridge arrangements (15a, 15b; 20a, 20b) between the pressure port (P) and the working port arrangement.
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公开(公告)号：US10895328B2
公开(公告)日：2021-01-19
申请号：US16524747
申请日：2019-07-29
发明人： Nils E. Sevelsted , Ylnghui Liu
摘要： A hydraulic steering unit is described comprising a housing (1) and a non-return valve (2) having a ball (3) and a valve seat (4) at an end of a channel (5) in the housing (1), wherein a movement of the ball (3) away from the valve seat (4) is limited by an abutment (7) in the channel (5). Such a steering unit should have a non-return valve which can be produced with low costs. To this end the abutment (7) extends transversely through the channel.
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公开(公告)号：US20200183432A1
公开(公告)日：2020-06-11
申请号：US16704040
申请日：2019-12-05
IPC分类号： G05D7/01
摘要： A thermal relief device (1) is described comprising a housing (2) having an inlet (3) and an outlet (4) connected by a relief channel (5). Such a thermal relief device should have a simple construction. To this end a microporous structure (10) is arranged between inlet (3) and outlet (4).
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公开(公告)号：US10670055B2
公开(公告)日：2020-06-02
申请号：US15918419
申请日：2018-03-12
发明人： Henrik Hjorth , Erik Christensen
摘要： A hydraulic system (1) is provided comprising a group of at least two valves (2a, 2b, 2c) connected to a bus (8), each of said valves (2a, 2b, 2c) comprising a primary memory (9a, 9b, 9c) for storing a set of parameters of the valve (2a, 2b, 2c). The service work of such a hydraulic system should be facilitated. To this end each valve (2a, 2b, 2c) comprises a secondary memory (10a, 10b, 10c) storing said set of parameters of a different valve (2b, 2c, 2a) of said group.
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公开(公告)号：US20190211849A1
公开(公告)日：2019-07-11
申请号：US16201666
申请日：2018-11-27
发明人： William Hugh Salvin Rampen , Niall James Caldwell , Uwe Bernhard Pascall Stein , Pierre Joly , Michael Richard Fielding
IPC分类号： F15B11/17 , F15B11/16 , F15B11/044
CPC分类号： F15B11/17 , F15B11/0445 , F15B11/162 , F15B2211/20546 , F15B2211/20569 , F15B2211/20576 , F15B2211/265 , F15B2211/2656 , F15B2211/3127 , F15B2211/327 , F15B2211/5059 , F15B2211/6052 , F15B2211/6054 , F15B2211/6313 , F15B2211/633 , F15B2211/6346 , F15B2211/7052 , F15B2211/7053 , F15B2211/7058
摘要： A fluid power system comprises a pump with multiple independently variable outlets, each of which is capable of delivering fluid in individually controllable volume units and a plurality of hydraulic loads. A system of switching valves is configured to create fluid connections between the pump outlets and the loads. A control system commands both the pump and the switching valves, so as to create valve state combinations to satisfy load conditions as demanded by an operator. The number of pump outlets connected to one or more of the loads is changeable to satisfy the flow required of the load due to the operator demand, each pump outlet being commanded to produce a flow depending on the status of other outlets connected a load to which the outlet is connected and the operator demand for that load.
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9.发明申请公开(公告)号：US20190033097A1
公开(公告)日：2019-01-31
申请号：US16043268
申请日：2018-07-24
CPC分类号： G01D5/2073 , B62D5/049 , B62D15/021 , G01D5/24466
摘要： A steering wheel angle sensor is described comprising a first part and a second part, wherein the first part and the second part are moveable relative to each other in rotational direction and the first part comprises at least one first signal generating means (1, 2) generating a sine signal (x2, x5) in response to an angular position of the second part and at least one second signal generating means (3, 4) generating a cosine signal (y2, y5) in response to the angular position of the second part. Such a steering wheel angle sensor should allow a simple fault detection. To this end fault detecting means (9) are provided, wherein the fault detecting means (9) form a sum of the square of the sine signal (x2, x5) and the square of the cosine signal (y2, y5) and generates a fault signal, if the sum is not within a predetermined range.
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公开(公告)号：US10161425B2
公开(公告)日：2018-12-25
申请号：US15092679
申请日：2016-04-07
发明人： Soeren Liljenberg , Tom Rudolph , Jens Vester , Tom Tychsen , Poul Ennemark
摘要： A hydraulic steering system (1) is provided having a steering device (2) and a symmetrically acting steering motor (3), said steering device (2) comprising a supply port arrangement having a high pressure port (P) and a low pressure port (T), a working port arrangement having two working ports (L, R), a control valve (14), two working lines (18, 19) each connecting said control valve (14) with one of said working ports (L, R), and a measuring motor (23). Such a hydraulic steering system should show a comfortable steering behavior. To this end said measuring motor (23) is arranged in one of said working lines (18, 19).
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