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公开(公告)号：US10294789B2
公开(公告)日：2019-05-21
申请号：US14483287
申请日：2014-09-11
发明人： Lukas Krittian , Martin Bergmann
摘要： A hydrostatic axial piston machine (1) with a cylinder barrel (2) having at least one piston bore (3) in which is located a power unit piston (4) supported on a cam disk (18). A control surface (5) is stationary relative to the housing and is on a control base (6), against which control surface the cylinder barrel (2) is in contact. In the control base (6) there are a kidney-shaped inlet connection (8) and a kidney-shaped outlet connection (9). The sealing web surface on the control surface 5 on the control base (6) in the vicinity of the inlet connection (8) is reduced, so that in operation as a motor, when there is a pressurization of the inlet connection (8), a reduction of the hydrostatic relief force is achieved. In operation as a motor, a residual application of the cylinder barrel (2) against the control surface (5) from a hold-down force of a hold-down spring (24) that is in an operative connection with the cylinder barrel (2) and/or pressing cylinder compression forces is preserved. In addition or alternatively, the terminal areas of the kidney-shaped inlet connection (8) of the control base (6) have a transitional contour (K) in the shape of a flattened arc in the radially outer area.
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公开(公告)号：US10076787B2
公开(公告)日：2018-09-18
申请号：US14493380
申请日：2014-09-23
发明人： Klaus Volker , Jens Gabelmann , Klaus Syndikus , Sebastian Weber
CPC分类号： B22F7/02 , B22F3/12 , B22F5/00 , B22F5/008 , B22F5/10 , B22F7/06 , B22F2998/10 , B22F3/02 , B22F3/10
摘要： A method for the production of a metal bearing layer (L) on a cylinder barrel (3) of a hydrostatic displacement machine (1), in particular of an axial piston machine, in which the metal bearing layer (L) is produced from a sintering powder in a sintering process. In a first production step, a dimensionally stable green compact (31) is produced from a sintering powder by a cold pressing process. In a second subsequent production step, the green compact (31) produced by the cold pressing process is sintered onto the cylinder barrel (3) in a sintering process.
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公开(公告)号：US09617984B2
公开(公告)日：2017-04-11
申请号：US14449191
申请日：2014-08-01
发明人： Martin Bergmann
CPC分类号： F04B1/2092 , F03C1/0607 , F03C1/0636 , F03C1/0671 , F03C1/0673 , F04B1/20 , F04B1/2085 , F04B1/328 , F04B27/086 , F04B27/0865 , F04B27/0869
摘要： A bent-axis hydrostatic axial piston machine (1) has a drive shaft (4) rotatable around an axis of rotation (Rt) and having a drive flange (3). A cylinder drum (7) is rotatable around an axis of rotation (Rz). The cylinder drum (7) includes a plurality of piston bores (8) concentric to the axis of rotation (Rz) of the cylinder drum (7) and in each of which piston bores (8) there is a longitudinally displaceable piston (10). The pistons (10) are fastened in an articulated manner to the drive flange (3). Between the drive shaft (4) and the cylinder drum (7) there is a constant velocity driving joint (30) in the form of a cone-beam semi-roller joint (31).
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公开(公告)号：US20150204356A1
公开(公告)日：2015-07-23
申请号：US14557491
申请日：2014-12-02
发明人： Lukas Krittian
CPC分类号： F15B1/04 , B60K6/12 , B60K2006/126 , F15B1/024 , F15B1/027 , F15B21/14 , F15B2201/31 , F15B2201/32 , F16H61/4096 , F16H2037/088 , F16H2200/2005 , Y02T10/6208
摘要： A hydrostatic drive system (1) with a hydrostatic pump (3) driven by a drive motor (2) and connected in a closed circuit with a hydrostatic motor (4). The hydrostatic motor (4) is connected with a consumer (5). The closed circuit is formed by a first hydraulic connection (6a) and a second hydraulic connection (6b). A pressure accumulator device (30) can be connected with the two hydraulic connections (6a, 6b) for the storage of energy and the output of energy. The pressure accumulator device (30) is a double piston accumulator (31) having a high-pressure-side pressure chamber (32) and a low-pressure-side pressure chamber (33). The high-pressure-side pressure chamber (32) can be connected with one of the two hydraulic connections (6a, 6b) of the closed circuit and simultaneously the low-pressure-side pressure chamber (33) can be connected with the respective other hydraulic connection (6b, 6a) of the closed circuit.
摘要翻译： 一种静液压驱动系统（1），具有由驱动马达（2）驱动并与静液压马达（4）在闭路中连接的静液压泵（3）。 静液压马达（4）与消费者（5）连接。 闭路由第一液压连接件（6a）和第二液压连接件（6b）形成。 压力蓄能器（30）可与两个液压连接（6a，6b）连接，用于储存能量和能量输出。 蓄压装置（30）是具有高压侧压力室（32）和低压侧压力室（33）的双活塞蓄能器（31）。 高压侧压力室32可以与闭路回路的两个液压连接部6a，6b中的一个连接，同时低压侧的压力室33可以与其他的压力室 液压连接（6b，6a）。
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5.发明申请公开(公告)号：US20150132176A1
公开(公告)日：2015-05-14
申请号：US14493380
申请日：2014-09-23
发明人： Klaus Volker , Jens Gabelmann , Klaus Syndikus , Sebastian Weber
CPC分类号： B22F7/02 , B22F3/12 , B22F5/00 , B22F5/008 , B22F5/10 , B22F7/06 , B22F2998/10 , B22F3/02 , B22F3/10
摘要： A method for the production of a metal bearing layer (L) on a cylinder barrel (3) of a hydrostatic displacement machine (1), in particular of an axial piston machine, in which the metal bearing layer (L) is produced from a sintering powder in a sintering process. In a first production step, a dimensionally stable green compact (31) is produced from a sintering powder by a cold pressing process. In a second subsequent production step, the green compact (31) produced by the cold pressing process is sintered onto the cylinder barrel (3) in a sintering process.
摘要翻译： 一种用于在静液压排量机（1）的缸筒（3）上制造金属轴承层（L）的方法，特别是轴向活塞机，其中金属轴承层（L）由 在烧结过程中烧结粉末。 在第一制造工序中，通过冷压工序由烧结粉末制造尺寸稳定的生坯（31）。 在第二后续的生产步骤中，通过冷压工艺生产的生坯（31）在烧结过程中烧结到气缸筒（3）上。
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公开(公告)号：US20140208733A1
公开(公告)日：2014-07-31
申请号：US14082358
申请日：2013-11-18
IPC分类号： F02N7/06
CPC分类号： F02N7/06 , F02N7/00 , F02N19/001 , F15B1/024 , F15B1/24
摘要： A variable displacement hydrostatic power unit (7) is connected with an internal combustion engine (2). The power unit (7) operates as a pump to deliver hydraulic fluid to at least one consumer (V) and operates as a motor as a hydraulic starter for the internal combustion engine (2). Hydraulic fluid from a hydraulic accumulator (25) is supplied to the power unit (7) operated as a motor. The power unit (7) includes a spring device (55) which, when the internal combustion engine (2) is shut off, actuates a displacement volume control device (50) into a position with the maximum displacement volume. When the power unit (7) is actuated with hydraulic fluid from the hydraulic accumulator (25), the internal combustion engine (7) is immediately started by the power unit (7) without the need for an immediately preceding adjustment of the displacement volume control device (50) of the power unit (7).
摘要翻译： 可变排量静液力动力单元（7）与内燃机（2）连接。 动力单元（7）作为泵运行，以将液压流体输送到至少一个消耗器（V），并且作为用作内燃机（2）的液压起动器的电动机操作。 来自液压蓄能器（25）的液压流体被供给到作为电动机操作的动力单元（7）。 动力单元（7）包括弹簧装置（55），当内燃机（2）被切断时，使排量体积控制装置（50）致动到具有最大排量的位置。 当动力单元（7）由液压蓄能器（25）的液压流体驱动时，内燃机（7）立即由动力单元（7）启动，而不需要进行前一位置的排量控制 设备（50）。
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公开(公告)号：US10183565B2
公开(公告)日：2019-01-22
申请号：US14557521
申请日：2014-12-02
发明人： Lukas Krittian
IPC分类号： F16H61/4096 , B60K6/12 , B60K6/48 , F16H61/42
摘要： A hydrostatic drive has a hydrostatic pump (3) driven by a drive motor (2) and connected in a closed circuit with a hydrostatic motor (4). The closed circuit is formed by a first hydraulic connection (6a) and a second hydraulic connection (6b). Each of the hydraulic connections (6a, 6b) can form the high-pressure side or the low-pressure side of the closed circuit. A high pressure accumulator device (20) can be connected with the respective high-pressure side hydraulic connection (6a, 6b) and, simultaneously, the respective low-pressure side hydraulic connection (6b, 6a) can be connected with a hydraulic balancing device (30). A valve device (50) is provided for this simultaneous connection. The valve device (50) is a hydraulically controlled shuttle valve device (51) connected to the two hydraulic connections (6a, 6b), the high pressure accumulator device (20) and the hydraulic balancing device (30). The shuttle valve device (30) has a high pressure accumulator path (51a) and a hydraulic balancing path (51b), and is in communication with the two hydraulic connections (6a, 6b) of the closed circuit.
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公开(公告)号：US09995387B2
公开(公告)日：2018-06-12
申请号：US14928336
申请日：2015-10-30
发明人： Markus Wiertellok , Wolfgang Kraft
IPC分类号： F16H61/4148 , F16H61/47 , F16H61/4008 , F16H61/421 , F16H61/46 , F16H61/4035 , F16H61/425 , F16H61/456 , B62D11/00 , B62D11/06
CPC分类号： F16H61/47 , B62D11/003 , B62D11/005 , B62D11/06 , F16H61/4008 , F16H61/4035 , F16H61/4148 , F16H61/421 , F16H61/425 , F16H61/456 , F16H61/46
摘要： A hydrostatic traction drive system of a mobile machine has a first hydraulic traction motor associated with a first vehicle side and a second hydraulic traction motor associated with a second vehicle side. The hydraulic traction motors are operated in an open circuit and are jointly supplied with hydraulic fluid by a single hydraulic pump. The first hydraulic traction motor is controlled by a first control valve and the second hydraulic traction motor is controlled by a second control valve. The first hydraulic traction motor and the second hydraulic traction motor are each variable displacement motors with an electrically variable displacement volume, and the first control valve and the second control valve are electrically actuatable control valves.
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公开(公告)号：US09963967B2
公开(公告)日：2018-05-08
申请号：US14674164
申请日：2015-03-31
发明人： Martin Bergmann , Sabine Kausch
CPC分类号： F01B3/0032 , F01B3/0082 , F03C1/0636 , F04B1/20 , F04B27/109 , F04B53/18
摘要： A hydrostatic axial piston machine (1) utilizing a bent-axis construction has a drive shaft (4) with a drive flange (3) rotatable around an axis of rotation (Rt) inside a housing (2). A cylinder barrel (7) is located inside the housing (2) and is rotatable around an axis of rotation (RZ). A drive joint (30) is located between the drive shaft (4) and the cylinder barrel (7). The drive joint (30) has at least one drive body (M1; M2; M3; M4) in the form of a slider or a roller body which is supported in the drive shaft (4) and the cylinder barrel (7). A lubrication device (80) is provided for the drive joint (30) and supplies lubricant from a lubricant port (81) located on the housing (2) of the axial piston machine (1) to the drive bodies (M1; M2; M3; M4) for cooling and lubrication of the drive bodies (M1; M2; M3; M4).
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公开(公告)号：US09850757B2
公开(公告)日：2017-12-26
申请号：US14673968
申请日：2015-03-31
发明人： Martin Bergmann
CPC分类号： F01B3/0002 , F01B3/0088 , F01B3/0094 , F03C1/0605 , F04B1/126 , F04B53/147
摘要： A hydrostatic axial piston machine (1) has a cylinder barrel (7) with a plurality of piston bores having pistons (10) fastened in an articulated manner to a drive flange (3). For articulated fastening of the pistons (10) to the drive flange (3), ball joints (20) are provided that are formed by a spherical cap-shaped receptacle socket (3a) in an end surface (3b) of the drive flange (3) and a ball head (10a) that is operatively connected with the piston (10). The receptacle sockets (3a) are each in the form of hemispheres that extend to the ball equator, and on one end surface (3b) of the drive flange (3), in the vicinity of the receptacle sockets (3a), there is a retaining web (30) that extends beyond the ball equator of the hemisphere to grip the ball head (10a) at an angle of greater than 180°.
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