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1. 发明授权

US10843725B2 Hydraulic steering unit 有权
公开(公告)号：US10843725B2
公开(公告)日：2020-11-24
申请号：US15970231
申请日：2018-05-03
申请人： Danfoss Power Solutions ApS
发明人： Niels Arbjerg , Charles Anthony Bates , Poul Ennemark , Mogens Frederiksen , Casper Mikael Olesen
IPC分类号： B62D5/08 , B62D5/065 , B62D5/093 , B62D7/14 , B62D5/14
CPC分类号： B62D5/065 , B62D5/08 , B62D5/093 , B62D5/14 , B62D7/144
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 first working port arrangement having a first left working port (L1) connected to a first left working flow path (4) and a first right working port (R1) connected to a first right working flow path (5), a variable first left orifice (A2L) connected to the main flow path (2) and to the first left working flow path (4), a variable first right orifice (A2R) connected to the main flow path (2) and to the first right working flow path (5), a variable second left orifice (A3L) connected to the first left working flow path (4) and to the tank flow path (3), a variable second right orifice (A3R) connected to the first right working flow path (5) and to the tank flow path (3), and a second working port arrangement having a second left working port (12) connected to a second left working flow path (9) and a second right working port (R2) connected to a second right working flow path (10), wherein the variable first left orifice (A2L) is connected to the second left working flow path (9) and the variable first right orifice (A2R) is connected to the second right working flow path (10).

2. 发明申请

US20180319426A1 HYDRAULIC STEERING UNIT 审中-公开
公开(公告)号：US20180319426A1
公开(公告)日：2018-11-08
申请号：US15970211
申请日：2018-05-03
申请人： Danfoss Power Solutions ApS
发明人： Niels Arbjerg , Charles Anthony Bates , Poul Ennemark , Mogens Frederiksen , Casper Mikael Olesen
IPC分类号： B62D5/065 , B62D5/08 , B62D5/14
CPC分类号： B62D5/065 , B62D5/08 , B62D5/093 , B62D5/14
摘要： A hydraulic steering unit (1) is described comprising a supply port arrangement having a pressure port (8) connected to a main flow path (2) and a tank port (5) connected to a tank flow path (3), a working port arrangement having a left working port (L) connected to a left working flow path (4) and a right working port (R) connected to a right working flow path (5), a variable first left orifice (A2L) connected to the main flow path (2) and to the left working flow path (4), a variable first right orifice (A2R) connected to the main flow path (2) and to the right working flow path (5), a variable second left orifice (A3L) connected to the left working flow path (4) and to the tank flow path (3), and a variable second right orifice (A3R) connected to the right working flow path (5) and to the tank flow path (3). Such a steering unit should allow comfortable steering. To this end a measuring motor (15) is arranged in one of the working flow parts (4, 5).

3. 发明授权

US09725113B2 Hydraulic steering system 有权
公开(公告)号：US09725113B2
公开(公告)日：2017-08-08
申请号：US15147516
申请日：2016-05-05
申请人： Danfoss Power Solutions ApS
发明人： Bendt Porskrog , Casper Mikael Olesen , Abdul Karim Rahimzai
IPC分类号： B62D5/06 , B62D5/065 , B62D5/093 , B62D5/12
CPC分类号： B62D5/065 , B62D5/062 , B62D5/093 , B62D5/12
摘要： A hydraulic steering system (1) is described comprising a steering unit (3) and a pressure source (4), said steering unit (3) comprising a working port arrangement (L, R) having two working ports, a supply port arrangement having a high pressure port (P) and a low pressure port (5), a main flow path (7) having a main bleed (A1) and a metering device (8) and being arranged between said high pressure port (P) and said working port arrangement (L, R), an amplification flow path (9) having an amplification bleed (Au) and being arranged between said high pressure port (P) and said working port arrangement (L, R), said main bleed (A1) and said amplification bleed (Au) being controlled together by means of a steering handle (6) and being closed in neutral position of said steering handle, and said pressure source (4) having a variable displacement.

4. 发明授权

US10766524B2 Hydraulic steering unit 有权
公开(公告)号：US10766524B2
公开(公告)日：2020-09-08
申请号：US15970311
申请日：2018-05-03
申请人： Danfoss Power Solutions ApS
发明人： Niels Arbjerg , Charles Anthony Bates , Poul Ennemark , Mogens Frederiksen , Casper Mikael Olesen
IPC分类号： B62D5/083 , B62D5/097 , B62D5/093 , B62D5/065 , B62D5/08 , B62D5/14
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 (5) and a tank port (T) connected to a tank flow path (6), a working port arrangement having a left working port (L) connected to a left working flow path (7) and a right working port (R) connected to a right working flow path (8), a bridge arrangement (14) of variable neutral open orifices, said bridge arrangement (14) comprising a first left orifice (A2L) connected to a main flow path (5) and to the left working flow path (7), a first right orifice (A2R) connected to a main flow path (5) and to the right working flow path (8), a second left orifice (A3L) connected to the left working flow path (7) and to the tank flow path (6), and a second right orifice (A3R) connected to the right working flow path (8) and to the tank flow path (6). Such a steering unit has a good steering behavior but can function as a closed-center solution. To this end a further variable orifice arrangement is arranged between the supply port (P) arrangement and the working port arrangement (T), which further orifice arrangement is closed in neutral position.

5. 发明授权

US10723378B2 Hydraulic steering unit 有权
公开(公告)号：US10723378B2
公开(公告)日：2020-07-28
申请号：US15970211
申请日：2018-05-03
申请人： Danfoss Power Solutions ApS
发明人： Niels Arbjerg , Charles Anthony Bates , Poul Ennemark , Mogens Frederiksen , Casper Mikael Olesen
IPC分类号： B62D5/065 , B62D5/093 , B62D5/08 , B62D5/14
摘要： A hydraulic steering unit (1) is described comprising a supply port arrangement having a pressure port (8) connected to a main flow path (2) and a tank port (5) connected to a tank flow path (3), a working port arrangement having a left working port (L) connected to a left working flow path (4) and a right working port (R) connected to a right working flow path (5), a variable first left orifice (A2L) connected to the main flow path (2) and to the left working flow path (4), a variable first right orifice (A2R) connected to the main flow path (2) and to the right working flow path (5), a variable second left orifice (A3L) connected to the left working flow path (4) and to the tank flow path (3), and a variable second right orifice (A3R) connected to the right working flow path (5) and to the tank flow path (3). Such a steering unit should allow comfortable steering. To this end a measuring motor (15) is arranged in one of the working flow parts (4, 5).

6. 发明授权

US10953914B2 Hydraulic steering unit 有权
公开(公告)号：US10953914B2
公开(公告)日：2021-03-23
申请号：US15970297
申请日：2018-05-03
申请人： Danfoss Power Solutions ApS
发明人： Niels Arbjerg , Charles Anthony Bates , Poul Ennemark , Mogens Frederiksen , Casper Mikael Olesen
IPC分类号： B62D5/065 , B62D5/08
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.

7. 发明申请

US20210024125A1 HYDRAULIC STEERING UNIT 有权
公开(公告)号：US20210024125A1
公开(公告)日：2021-01-28
申请号：US17042364
申请日：2019-05-16
申请人： Danfoss Power Solutions ApS
发明人： Mogens Frederiksen , Poul Ennemark , Casper Mikael Olesen , Niels Arbjerg , Charles Anthony Bates
IPC分类号： B62D5/093 , B62D5/14
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.

8. 发明申请

US20180319431A1 HYDRAULIC STEERING UNIT 审中-公开
公开(公告)号：US20180319431A1
公开(公告)日：2018-11-08
申请号：US15970311
申请日：2018-05-03
申请人： Danfoss Power Solutions ApS
发明人： Niels Arbjerg , Charles Anthony Bates , Poul Ennemark , Mogens Frederiksen , Casper Mikael Olesen
IPC分类号： B62D5/065 , B62D5/08 , B62D5/14
CPC分类号： B62D5/065 , B62D5/08 , B62D5/083 , B62D5/093 , B62D5/14
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 (5) and a tank port (T) connected to a tank flow path (6), a working port arrangement having a left working port (L) connected to a left working flow path (7) and a right working port (R) connected to a right working flow path (8), a bridge arrangement (14) of variable neutral open orifices, said bridge arrangement (14) comprising a first left orifice (A2L) connected to a main flow path (5) and to the left working flow path (7), a first right orifice (A2R) connected to a main flow path (5) and to the right working flow path (8), a second left orifice (A3L) connected to the left working flow path (7) and to the tank flow path (6), and a second right orifice (A3R) connected to the right working flow path (8) and to the tank flow path (6). Such a steering unit has a good steering behavior but can function as a closed-center solution. To this end a further variable orifice arrangement is arranged between the supply port (P) arrangement and the working port arrangement (T), which further orifice arrangement is closed in neutral position.

9. 发明授权

US09744990B2 Hydraulic steering system 有权
公开(公告)号：US09744990B2
公开(公告)日：2017-08-29
申请号：US15147358
申请日：2016-05-05
申请人： Danfoss Power Solutions ApS
发明人： Bendt Porskrog , Casper Mikael Olesen , Abdul Karim Rahimzai
IPC分类号： B62D5/06 , B62D5/07 , B62D5/093 , B62D5/065 , B62D5/12 , B62D5/18
CPC分类号： B62D5/062 , B62D5/065 , B62D5/075 , B62D5/093 , B62D5/12 , B62D5/18
摘要： A hydraulic steering system 1 is described comprising a steering unit and a priority valve, said steering unit comprising a working port arrangement having two working ports, a supply port arrangement having a high pressure port and a low pressure port, a load sensing port, a main flow path having a main bleed and a metering device and being arranged between said high pressure port and said working port arrangement, an amplification flow path having an amplification bleed and being arranged between said high pressure port and said working port arrangement, said main bleed and said amplification bleed being controlled together by means of a steering handle and being closed in neutral position of said steering handle, wherein said priority valve comprises a priority outlet connected to said high pressure port of said steering unit, a valve element moveable in a priority direction to connect an inlet of said priority valve to said priority outlet, and a load sensing connection connected to said load sensing port of said steering unit, said priority outlet being connected to said load sensing connection via a priority valve bleed, a pressure at a point downstream said priority bleed acting on said valve element in said priority direction, wherein said load sensing port is connected to said low pressure port via a drain bleed being open in neutral position of said steering handle and closing upon actuation of said steering handle out of said neutral position.

10. 发明申请

US20160332662A1 HYDRAULIC STEERING SYSTEM 有权
标题翻译：液压转向系统
公开(公告)号：US20160332662A1
公开(公告)日：2016-11-17
申请号：US15147358
申请日：2016-05-05
申请人： Danfoss Power Solutions ApS
发明人： Bendt Porskrog , Casper Mikael Olesen , Abdul Karim Rahimzai
IPC分类号： B62D5/06 , B62D5/18 , B62D5/065 , B62D5/12
CPC分类号： B62D5/062 , B62D5/065 , B62D5/075 , B62D5/093 , B62D5/12 , B62D5/18
摘要： A hydraulic steering system 1 is described comprising a steering unit and a priority valve, said steering unit comprising a working port arrangement having two working ports, a supply port arrangement having a high pressure port and a low pressure port, a load sensing port, a main flow path having a main bleed and a metering device and being arranged between said high pressure port and said working port arrangement, an amplification flow path having an amplification bleed and being arranged between said high pressure port and said working port arrangement, said main bleed and said amplification bleed being controlled together by means of a steering handle and being closed in neutral position of said steering handle, wherein said priority valve comprises a priority outlet connected to said high pressure port of said steering unit, a valve element moveable in a priority direction to connect an inlet of said priority valve to said priority outlet, and a load sensing connection connected to said load sensing port of said steering unit, said priority outlet being connected to said load sensing connection via a priority valve bleed, a pressure at a point downstream said priority bleed acting on said valve element in said priority direction, wherein said load sensing port is connected to said low pressure port via a drain bleed being open in neutral position of said steering handle and closing upon actuation of said steering handle out of said neutral position.
摘要翻译：描述了一种液压转向系统1，其包括转向单元和优先阀，所述转向单元包括具有两个工作端口的工作端口装置，具有高压端口和低压端口的供应端口装置，负载感测端口，主流路具有主泄漏和计量装置，并且布置在所述高压端口和所述工作端口装置之间，放大流路具有放大渗流并且布置在所述高压端口和所述工作端口装置之间，所述主流出并且所述放大泄漏通过转向手柄一起控制并且在所述转向手柄的中立位置处被关闭，其中所述优先阀包括连接到所述转向单元的所述高压端口的优先出口，优先移动的阀元件将所述优先阀的入口连接到所述优先出口的方向，以及连接t的负载感测连接 o所述转向单元的负载感测端口，所述优先出口经由优先阀泄漏连接到所述负载感测连接，在所述优先排放点下游的点处的压力在所述优先方向上作用在所述阀元件上，其中所述负载感测端口经由在所述转向手柄的中立位置打开的排泄口连接到所述低压端口，并且在所述转向手柄致动所述中立位置时闭合。

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