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公开(公告)号：US10851909B2
公开(公告)日：2020-12-01
申请号：US15864684
申请日：2018-01-08
申请人： HAWE Hydraulik SE
发明人： Georg Neumair , Thomas Simon
摘要： The present invention relates to a dual-stage pump for a hydraulic system with a housing, a high and low-pressure pump element, a common pressure outlet and a switching valve that is arranged between a tank connection and the low-pressure pump element. The switching valve has a spring element and a piston being movable against a force of the spring element relative to the housing and having a closing member that can be lifted from a valve seat by a control pressure that is tapped on the pressure outlet and applied in a control pressure chamber. On the one hand, the invention is characterized in that the switching valve comprises a tappet that is movable relative to the housing and configured to move the piston and arranged between the control pressure chamber and the piston and has a smaller effective diameter than the piston. On the other hand, the invention is characterized in that the dual-stage pump comprises at least one valve that can be screwed into the housing, wherein a cutting edge of the valve is sealingly cut into the housing.
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公开(公告)号：US20200347847A1
公开(公告)日：2020-11-05
申请号：US16861456
申请日：2020-04-29
申请人： HAWE Hydraulik SE
发明人： Thomas Simon , Gerhard Lörner
IPC分类号： F04C29/00
摘要： A hydraulic power unit has a housing, at least one pump element, a pressure collecting plate and an electric motor. The electric motor has at least one end shield, a stator and a rotor fixed on a rotor shaft. The at least one end shield has at least one partially circumferential functional recess extending between an outer and an inner circumferential surface of the end shield in the direction of a rotor shaft bearing seat. The functional recess thus formed permits the arrangement of functional elements at a central point of the hydraulic power unit in a space-efficient manner without negatively influencing the overall size of the hydraulic power unit.
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公开(公告)号：USD879251S1
公开(公告)日：2020-03-24
申请号：US29670626
申请日：2018-11-18
申请人： HAWE Hydraulik SE
设计人： Johannes Glaser
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公开(公告)号：US20150040555A1
公开(公告)日：2015-02-12
申请号：US14453874
申请日：2014-08-07
申请人： HAWE HYDRAULIK SE
发明人： Georg ANEDER , Engelbert ZWINGLER
IPC分类号： F15B13/02 , F15B13/04 , F16H61/4078
CPC分类号： F15B13/028 , B25B27/10 , F15B11/028 , F15B11/0423 , F15B11/10 , F15B11/15 , F15B13/0401 , F15B13/0405 , F15B13/0426 , F15B2211/31558 , F15B2211/329 , F15B2211/40507 , F15B2211/41572 , F15B2211/50509 , F15B2211/5159 , F15B2211/528 , F15B2211/55 , F15B2211/7052 , F15B2211/76 , F16H61/4078 , Y10T137/7758
摘要： In a hydraulic drive of a tool, a piston is adapted to be acted upon by a pump via a pressure limiting seat valve and a parallel switching seat valve of a valve arrangement. A restriction is provided in a pressure line upstream of the pressure limiting seat valve which is connected to a tank on the flow-off side. A drain line leads from a working chamber of the piston via the switching seat valve to the tank. A closing side is adapted to be acted upon by pressure and an opening side is adapted to be acted upon by a force generated when the pressure limiting seat valve responds. The pump is adapted to be switched off when the maximum operating pressure has been reached, so that the piston will execute a return stroke. A pressure-increasing restriction is provided on the flow-off side of the pressure limiting seat valve.
摘要翻译： 在工具的液压驱动中，活塞适于通过泵通过压力限制座阀和阀装置的并联开关座阀来作用。 在限流座阀的上游的压力线上设置限制，该限压座阀连接到流出侧的罐。 排水管通过开关座阀从活塞的工作室引导到罐。 闭合侧适于通过压力作用，并且开口侧适于由压力限制阀阀响应时产生的力作用。 当达到最大工作压力时，该泵适于关闭，以便活塞将执行返回行程。 在限压座阀的流出侧设置增压限制。
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公开(公告)号：US20130340744A1
公开(公告)日：2013-12-26
申请号：US13920274
申请日：2013-06-18
申请人： HAWE HYDRAULIK SE
发明人： Martin Heusser , Markus Imlauer , Andreas Nocker
IPC分类号： F15B11/028 , F15B13/02 , F24J2/54
CPC分类号： F15B11/028 , F15B13/021 , F16K1/34 , F16K1/42 , F16K3/0236 , F16K25/005 , F16K25/02 , F24S23/70 , F24S23/74 , F24S30/40 , F24S30/425 , F24S50/20 , F24S2030/115 , Y02E10/45 , Y02E10/47 , Y10T137/7848
摘要： In a solar generator, comprising a reflector and an electrohydraulic sun-position tracking device with at least one hydraulic cylinder and a hydraulic control seat valve, the reflector can be guided via the control seat valve to follow in synchronism with the course of the sun continuously and uninterruptedly. The control seat valve for regulating a pressure medium flow permanently supplied to the hydraulic cylinder comprises a seat surface and a sealing surface permanently pressed against each other with variable contact pressure, with which the pressure medium flow can be generated as controlled leakage. The sealing surface is made of a material that can be deformed by contact pressure. In the control seat valve, the controlled leakage is set in a control position at least substantially without lifting movement exclusively by the relative material deformation of the sealing surface on the seat surface, which deformation is set via the contact pressure.
摘要翻译： 在太阳能发电机中，包括反射器和具有至少一个液压缸和液压控制座阀的电动液压太阳位置跟踪装置，反射器可以经由控制座阀引导，以与太阳的连续过程同步跟随 不间断地 用于调节永久供应到液压缸的压力介质流量的控制座阀包括座面和密封表面，该表面和密封表面以可变的接触压力彼此相互压靠，由此可以产生压力介质流量作为受控泄漏。 密封表面由可以通过接触压力变形的材料制成。 在控制座阀中，控制泄漏至少基本上被设定在控制位置，而不会由座面上的密封面的相对材料变形引起提升，该变形通过接触压力而设定。
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公开(公告)号：US20240191731A1
公开(公告)日：2024-06-13
申请号：US18523303
申请日：2023-11-29
申请人： HAWE Hydraulik SE
发明人： Christian HART , Sven MUELLER , Matthias KUBE
CPC分类号： F15B15/1428 , F15B1/04
摘要： A hydraulic cylinder for a restraint system includes an outer housing, an inner housing, a pressure accumulator and a shut-off valve switchable between a release position and a shut-off position. The inner housing is disposed inside the outer housing and has a piston, a first working chamber and a second working chamber, which is separated from the first working chamber by the piston. The first working chamber is connected to the accumulator via a first line arrangement, and the second working chamber is connected to the accumulator via a second line arrangement. The pressure accumulator comprises a storage space for hydraulic fluid. The shut-off valve is disposed in the second line arrangement and blocks the second line arrangement in the shut-off position. The pressure accumulator is disposed between the outer housing and the inner housing.
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17.发明公开公开(公告)号：US20240151317A1
公开(公告)日：2024-05-09
申请号：US18494295
申请日：2023-10-25
申请人： HAWE Hydraulik SE
发明人： Markus NEUMAIR , Benjamin HASNER
CPC分类号： F16K27/029 , F16K31/0675
摘要： A method for switching an electromagnetically actuable hydraulic valve including a switching element and an electromagnet having a coil and an armature connected to the switching element for joint movement. When a current is applied to the coil, the armature moves together with the switching element from an initial position to an end position for a switching operation. The method includes the following steps: applying a switching voltage to the coil of the electromagnet to initiate the switching operation; capturing the current curve over time; reaching-detection of the end position of the switching element; determining a holding current taking into account the reaching-detection of the end position of the switching element and the captured current curve; and reducing the current applied to the coil to the determined holding current. A hydraulic valve with a control unit which performs the disclosed method is also disclosed.
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公开(公告)号：US11815918B2
公开(公告)日：2023-11-14
申请号：US17684689
申请日：2022-03-02
申请人： HAWE Hydraulik SE
发明人： Thomas Wechsel , Walter Steiler , Martin Heusser
CPC分类号： G05D16/101 , F15B13/02 , G05D16/0404
摘要： A preselection valve is for a hydraulic valve assembly with a switching element, a pressure input line, a first pressure output line and a first load pressure line with a load pressure inlet and output. The switching element is switchable from neutral to a first switching position. The pressure input line is connected to the first pressure output line in the first position. The preselection valve has a second and third load pressure line and a load pressure increasing device. The second load pressure line branches off the pressure input line upstream of the switching element. The load pressure increasing device is connected to the third load pressure line, which connects the pressure increasing device to the first load pressure line. The second load pressure line is connected to the pressure increasing device in the first switching position and the second load pressure line is blocked in the neutral position.
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公开(公告)号：US20230233392A1
公开(公告)日：2023-07-27
申请号：US17818844
申请日：2022-08-10
申请人： HAWE Hydraulik SE
发明人： Christian Hart
CPC分类号： A61G7/1017 , A61G1/0567
摘要： A hydraulic drive unit for a stretcher has a hydraulic circuit with a differential cylinder, a pump, a tank and a valve assembly. The differential cylinder includes a rod working chamber and a piston working chamber. The valve assembly is switchable into at least a first state and a second state, wherein the rod working chamber is connected to the tank in the first state and to the pump in the second state, and wherein the piston working chamber is connected to the pump in the first state and to the tank in the second state. The tank is a tank separated from the atmosphere with a variable tank volume, so that the hydraulic circuit is configured as a closed hydraulic circuit. A stretcher having such a hydraulic drive unit is also provided.
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公开(公告)号：USD986381S1
公开(公告)日：2023-05-16
申请号：US29753951
申请日：2020-10-05
申请人： HAWE Hydraulik SE
设计人： Georg Aneder
摘要： FIG. 1 is a perspective view of a hydraulic component housing for a hydraulic valve according to an embodiment of the present invention;
FIG. 2 is a first side view of the hydraulic component housing for a hydraulic valve of FIG. 1;
FIG. 3 is a second side view of the hydraulic component housing for a hydraulic valve of FIGS. 1 and 2;
FIG. 4 is a first end view of the hydraulic component housing for a hydraulic valve of FIGS. 1-3;
FIG. 5 is a second end view of the hydraulic component housing for a hydraulic valve of FIGS. 1-4;
FIG. 6 is a top view of the hydraulic component housing for a hydraulic valve of FIGS. 1-5; and,
FIG. 7 is a bottom view of the hydraulic component housing for a hydraulic valve of FIGS. 1-6.
The broken line portions of the FIGS. illustrate unclaimed portions of the design.
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