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1.发明公开METHOD OF PREVENTING CAVITATION IN AN AXIAL PISTON PUMP DURING AN AIDING LOAD AND SYSTEM AND VALVE EMPLOYING THE SAME 失效方法用于防止KAVITALION轴向活塞泵有助于在A POWER AND DEVICE AND VALVE其所使用
公开(公告)号：EP0712467A1
公开(公告)日：1996-05-22
申请号：EP94919303.0
申请日：1994-06-01
发明人： KANDIL, Magdy, A.
CPC分类号： F03C1/0684 , F03C1/0602 , F04B49/24 , F04B2207/01 , F15B21/044
摘要： Cavitation in axial piston motors (20) caused to act as a pump by an aiding load (28), and the related difficulty of loss of hydrostatic film (52), and tipping or hammering of motor slippers (64), can be reduced by a method which includes the step of recirculating hydraulic fluid from the supply port (18) of the motor (20) to the return port (30) of the motor (20) upon the occurrence of an aiding load (28).
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公开(公告)号：EP0712467B1
公开(公告)日：1998-12-02
申请号：EP94919303.1
申请日：1994-06-01
发明人： KANDIL, Magdy, A.
CPC分类号： F03C1/0684 , F03C1/0602 , F04B49/24 , F04B2207/01 , F15B21/044
摘要： Cavitation in axial piston motors (20) caused to act as a pump by an aiding load (28), and the related difficulty of loss of hydrostatic film (52), and tipping or hammering of motor slippers (64), can be reduced by a method which includes the step of recirculating hydraulic fluid from the supply port (18) of the motor (20) to the return port (30) of the motor (20) upon the occurrence of an aiding load (28).
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3.发明公开HYDRAULISCHE SCHALTUNG ZUR BEGRENZUNG DES DREHMOMENTS EINES IM GESCHLOSSENEN KREISLAUF MIT EINER HYDROPUMPE VERBUNDENEN HYDROSTATISCHEN HYDROMOTORS 失效液压回路，用于限制闭合回路的液力变矩器泵相关联HYDRO HYDROSTATIC MOTORS的转矩。
公开(公告)号：EP0448675A1
公开(公告)日：1991-10-02
申请号：EP90915120.0
申请日：1990-10-15
发明人： SCHRÖDER, Klaus
CPC分类号： F16H61/4157 , F03C1/0684 , F16H61/4043
摘要： Circuit hydraulique pour limiter le couple d'un moteur hydraulique hydrostatique (2) relié en circuit fermé à une pompe hydraulique (1), qui, en mode freinage, fait office de pompe hydraulique, des soupapes de limitation de pression (6, 7, 8, 9) étant montées en amont et en aval du moteur hydraulique (2). Les soupapes de limitation de pression sont des soupapes pilote et au moins une soupape de commutation est prévue. Lorsque le moteur hydraulique (2) est en mode moteur, la soupape de commutation commute la soupape pilote de limitation de pression, du côté pression, sur une pression maximale supérieure. Lorsque le moteur hydraulique est en mode pompe, la soupape de commutation commute la soupape pilote de limitation de pression, de l'autre côté pression, sur une pression maximale inférieure.
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4.发明授权Hydraulic actuation unit, particularly for controlling the starting and stopping of hydraulic motors 有权液压驱动单元，特别是用于控制液压马达的启动和停止
公开(公告)号：EP2592263B1
公开(公告)日：2017-12-20
申请号：EP11425269.5
申请日：2011-11-09
发明人： Rigolon, Enrico , Corradini, Enzo
IPC分类号： F03C1/04
CPC分类号： F03C1/03 , F03C1/003 , F03C1/045 , F03C1/0681 , F03C1/0684 , F15B11/0445
摘要： A hydraulic actuation unit, particularly for controlling the starting and stopping of hydraulic motors, comprising: - a first main circuit (2) and a second main circuit (3), which are adapted to connect selectively a supply of pressurized working liquid and a tank to a hydraulic motor (100); - a first recirculation circuit (4) and a second recirculation circuit (5) for returning respectively a fraction of the working liquid from the second main circuit (3) to the first main circuit (2) and vice versa; - a counterbalancing valve (6), which comprises a shuttle (7) that can switch to a first end position (P1) and to a second end position (P2), which correspond to the actuation of the motor (100) with mutually opposite directions of rotation, and comprises a first passage channel (8) and a second passage channel (9), which are arranged respectively along the first main circuit (2) and along the second main circuit (3); - a first discharge channel (10) and a second discharge channel (11), for the connection respectively of the first main circuit (2) to the second recirculation circuit (5) and of the second main circuit (3) to the first recirculation circuit (4). The shuttle (7) comprises a first check valve (50) and a second check valve (70) respectively arranged in the first passage channel (8) and in the second passage channel (9). The first check valve (50) comprising at least one first flow control element (51) that can move from an open position, for the passage of the working liquid along the first passage channel (8) and therefore along the first main circuit (2), to a closure position, for closing the first passage channel (8) and therefore the first main circuit (2) and vice versa. The second check valve (70) comprises at least one second flow control element (71) that can move from an open position for the passage of the working liquid along the second passage channel (9) and therefore along the second main circuit (3) to a closure position for the closure of the second passage channel (9) and therefore of the second main circuit (3) and vice versa. The peculiarity of the invention resides in that the first check valve (50) and the second check valve (70) respectively are provided with first damping means (52) and second damping means (72) in order to slow down the passage movement respectively of the first flow control element (51) and of the second flow control element (71) from the respective closure position to the respective open position.
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5.发明公开Hydraulic actuation unit, particularly for controlling the starting and stopping of hydraulic motors 有权HydraulischeBetätigungseinheit，insbesondere zum Steuern des Startens und Stoppens hydraulischer Motoren
公开(公告)号：EP2592263A1
公开(公告)日：2013-05-15
申请号：EP11425269.5
申请日：2011-11-09
发明人： Rigolon, Enrico , Corradini, Enzo
IPC分类号： F03C1/04
CPC分类号： F03C1/03 , F03C1/003 , F03C1/045 , F03C1/0681 , F03C1/0684 , F15B11/0445
摘要： A hydraulic actuation unit, particularly for controlling the starting and stopping of hydraulic motors, comprising:
- a first main circuit (2) and a second main circuit (3), which are adapted to connect selectively a supply of pressurized working liquid and a tank to a hydraulic motor (100);
- a first recirculation circuit (4) and a second recirculation circuit (5) for returning respectively a fraction of the working liquid from the second main circuit (3) to the first main circuit (2) and vice versa;
- a counterbalancing valve (6), which comprises a shuttle (7) that can switch to a first end position (P1) and to a second end position (P2), which correspond to the actuation of the motor (100) with mutually opposite directions of rotation, and comprises a first passage channel (8) and a second passage channel (9), which are arranged respectively along the first main circuit (2) and along the second main circuit (3);
- a first discharge channel (10) and a second discharge channel (11), for the connection respectively of the first main circuit (2) to the second recirculation circuit (5) and of the second main circuit (3) to the first recirculation circuit (4).
The shuttle (7) comprises a first check valve (50) and a second check valve (70) respectively arranged in the first passage channel (8) and in the second passage channel (9). The first check valve (50) comprising at least one first flow control element (51) that can move from an open position, for the passage of the working liquid along the first passage channel (8) and therefore along the first main circuit (2), to a closure position, for closing the first passage channel (8) and therefore the first main circuit (2) and vice versa. The second check valve (70) comprises at least one second flow control element (71) that can move from an open position for the passage of the working liquid along the second passage channel (9) and therefore along the second main circuit (3) to a closure position for the closure of the second passage channel (9) and therefore of the second main circuit (3) and vice versa.
The peculiarity of the invention resides in that the first check valve (50) and the second check valve (70) respectively are provided with first damping means (52) and second damping means (72) in order to slow down the passage movement respectively of the first flow control element (51) and of the second flow control element (71) from the respective closure position to the respective open position.摘要翻译： 一种液压致动单元，特别是用于控制液压马达的起动和停止，包括： - 第一主回路（2）和第二主回路（3），其适于选择性地连接加压工作液体和油箱 到液压马达（100）; - 第一再循环回路（4）和第二再循环回路（5），用于分别将来自第二主回路（3）的工作液体的一部分返回到第一主回路（2），反之亦然; - 平衡阀（6），其包括能够切换到相对于所述电动机（100）的致动的第一端部位置（P1）和第二端部位置（P2）的梭子（7） 旋转方向，包括分别沿着第一主电路（2）和第二主电路（3）布置的第一通道（8）和第二通道（9）。 - 第一排放通道（10）和第二排放通道（11），用于将第一主回路（2）与第二再循环回路（5）和第二主回路（3）分别连接到第一再循环 电路（4）。 梭子（7）包括分别布置在第一通道（8）和第二通道（9）中的第一止回阀（50）和第二止回阀（70）。 第一止回阀（50）包括至少一个可从打开位置移动的第一流量控制元件（51），用于工作液体沿着第一通道（8）的通过，因此沿着第一主回路（2） ）到关闭位置，用于关闭第一通道（8）并因此封闭第一主电路（2），反之亦然。 第二止回阀（70）包括至少一个第二流量控制元件（71），该第二流量控制元件能够从打开位置移动，以使工作液体沿着第二通道（9）通过，因此沿着第二主回路（3）移动， 到第二通道（9）和第二主回路（3）的关闭的关闭位置，反之亦然。 本发明的特征在于，第一止回阀（50）和第二止回阀（70）分别设有第一阻尼装置（52）和第二阻尼装置（72），以便分别减慢通道运动 第一流量控制元件（51）和第二流量控制元件（71）从相应的关闭位置到相应的打开位置。
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公开(公告)号：EP2978969A4
公开(公告)日：2016-11-09
申请号：EP14773544
申请日：2014-02-11
发明人： LAGUNOFF GUSTAF , WALLGREN AXEL , JONESAND GUNNAR , LUNDSTRÖM BO
CPC分类号： G05D7/0173 , B60W10/119 , F03C1/0644 , F03C1/0655 , F03C1/0684 , F03C1/0697 , F04B1/20 , F04B1/2014 , F04B1/2042 , F04B1/30 , F04B1/34 , F04B53/1012
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公开(公告)号：EP2978969A1
公开(公告)日：2016-02-03
申请号：EP14773544.3
申请日：2014-02-11
IPC分类号： F04B1/20 , B60W10/119 , F04B1/30 , F16D31/02
CPC分类号： G05D7/0173 , B60W10/119 , F03C1/0644 , F03C1/0655 , F03C1/0684 , F03C1/0697 , F04B1/20 , F04B1/2014 , F04B1/2042 , F04B1/30 , F04B1/34 , F04B53/1012
摘要： A hydraulic pump assembly comprises a rotatable piston drum (20) with at least one centrifugal lever (23) pivotally attached thereto for radial movements between radial flanges (20') under the action of centrifugal force at rotation of the piston drum. The centrifugal lever (23) is arranged to control the position of a valve member, preferably a ball (22), at the opening end of a bore (21) in the piston drum (20). There is a defined friction surface (28; 32) between the lever (23) and one of the radial flanges (20'), and there are spring means (29-31; 25, 33) for resiliently biasing the lever against said one of the flanges.
摘要翻译： 一种液压泵组件包括可旋转的活塞鼓（20），该活塞鼓（20）具有至少一个枢转地连接到其上的离心杆（23），用于在活塞鼓旋转时的离心力作用下径向凸缘（20'）之间的径向运动。 离心杆（23）布置成控制阀构件（优选为球（22））在活塞鼓（20）中的孔（21）的开口端处的位置。 在杠杆（23）和其中一个径向凸缘（20'）之间存在限定的摩擦面（28; 32），并且存在弹簧装置（29-31; 25,33），用于将杠杆弹性地偏压到所述一个 的法兰。
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8.发明授权HYDRAULISCHE SCHALTUNG ZUR BEGRENZUNG DES DREHMOMENTS EINES IM GESCHLOSSENEN KREISLAUF MIT EINER HYDROPUMPE VERBUNDENEN HYDROSTATISCHEN HYDROMOTORS 失效液压回路，用于限制闭合回路的液力变矩器泵相关联HYDRO HYDROSTATIC MOTORS的转矩。
公开(公告)号：EP0448675B1
公开(公告)日：1993-12-29
申请号：EP90915120.1
申请日：1990-10-15
发明人： SCHRÖDER, Klaus
CPC分类号： F16H61/4157 , F03C1/0684 , F16H61/4043
摘要： Hydraulic circuit for limiting the torque of a hydrostatic hydraulic motor (2) connected in closed circuit to a hydraulic pump (1), which in braking mode operates as a hydraulic pump, in which pressure-control valves (6, 7, 8, 9) are connected before and after the hydraulic motor (2). The pressure-control valves consist of pilot-operated pressure-control valves and at least one on-off valve is provided. When the hydraulic motor (2) is in motor mode, the on-off valve switches the pilot-operated pressure-control valve on the pressure side to a higher maximum pressure. When the hydraulic motor is in pump mode, the on-off valve switches the pilot-operated pressure-control valve on the other pressure side to a lower maximum pressure.
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