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    • 95. 发明申请
    • A HYDRAULIC ACTUATOR FOR A SERVOMOTOR WITH AN END LOCK FUNCTION
    • 一种具有端锁功能的伺服电机的液压执行器
    • WO2008095499A1
    • 2008-08-14
    • PCT/DK2008/000061
    • 2008-02-07
    • SAUER-DANFOSS APSNIELSEN, BrianPLOUG, OlePATTERSON, Chad, M.
    • NIELSEN, BrianPLOUG, OlePATTERSON, Chad, M.
    • F15B11/00F15B20/00B62D5/08F16H61/42
    • F15B11/006F15B11/003F15B20/002F15B20/008F15B2211/30505F15B2211/30575F15B2211/40507F15B2211/7653F15B2211/8755F16H61/433
    • A hydraulic actuator for a hydraulic servomotor (4) is disclosed. The hydraulic servomotor (4) is of a kind having at least one defined end position, and has a first chamber (5) and a second chamber (6) associated therewith. The actuator is connected to a fluid source (2) and a fluid drain (3). The actuator comprises a first valve (7) fluidly connected between the fluid source (2) and the first chamber (5), a second valve (8) fluidly connected between the first chamber (5) and the fluid drain (3), and a third valve (9) fluidly connected between the fluid source (2) and the second chamber (6). The actuator further comprises a flow channel (10, 17), preferably comprising a flow restrictor (12, 18), in fluid communication with the second chamber (6). The valves (7, 8, 9) are such that, in the case of a power cut off, they will prevent a fluid flow out of the first chamber (5), and a fluid flow out of the second chamber (6) takes place via the flow channel (10, 17). This will cause a servomotor piston member (13) to move towards the second chamber (6), thereby moving the hydraulic servomotor (4) to an end position.
    • 公开了一种用于液压伺服电动机(4)的液压致动器。 液压伺服电动机(4)具有至少一个限定的端部位置,并且具有与其相关联的第一室(5)和第二室(6)。 致动器连接到流体源(2)和流体排放(3)。 致动器包括流体连接在流体源(2)和第一腔室(5)之间的第一阀门(7),流体连接在第一腔室(5)和流体排出口(3)之间的第二阀门(8),以及 流体连接在流体源(2)和第二室(6)之间的第三阀(9)。 致动器还包括流动通道(10,17),优选地包括与第二腔室(6)流体连通的限流器(12,18)。 阀(7,8,9)使得在断电的情况下,它们将防止流体从第一腔室(5)流出,并且流出第二腔室(6)的流体 通过流动通道(10,17)放置。 这将使伺服马达活塞构件(13)朝向第二腔室(6)移动,从而将液压伺服马达(4)移动到结束位置。
    • 98. 发明申请
    • SECURITY VALVE FOR A PRESS
    • PRESS安全阀
    • WO01012997A3
    • 2001-09-27
    • PCT/DE2000/002749
    • 2000-08-11
    • B30B15/10B30B15/12B30B15/14F15B11/00F15B11/028F15B13/04F15B13/043F15B20/00F15B21/10
    • F15B20/008B30B15/142F15B13/0405F15B13/0435F15B21/10
    • The invention relates to a hydraulic valve arrangement for operating a hydraulic consumer (80). Said arrangement is connected to a hydraulic pressure source (40) by means of at least one pressure connection (30), to the hydraulic consumer (8) by means of at least one working connection (70) and to a tank (60) by means of at least one tank connection (50). The tank is provided with a hydraulic fluid. The inventive arrangement is provided with at least two working valves (90, 140) which can be actuated by means of at least one electrically controllable control valve (230). The aim of the invention is to obtain coupling and breaking operations at user level (80) which are as short as possible. To this end, the at least two working valves (90, 140) are configured as seat valves (110).
    • 与用于操作液压消耗的液压阀装置(80)连接到一个液压源通过至少一个压力端口(30)(40)由工作端口(70)连接到液压耗能器(80)的至少一个的装置和由至少一个箱端口(50 )连接到包括罐(60)的液压流体,并且至少两个工作阀,其由至少一个电致动的控制阀(230来致动(90,140))是实现上的部分尽可能短的连接和制动操作 消费者(80)规定,至少两个工作阀(90,140)设计为座阀(110)。