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1. 发明授权

US5927520A Electro-hydraulic operating system for extensible boom crane 失效
标题翻译：可伸缩起重机电液操作系统
公开(公告)号：US5927520A
公开(公告)日：1999-07-27
申请号：US539953
申请日：1995-10-06
申请人： Henry D. Barthalow , William E. Hull , Claude R. Zimmerman
发明人： Henry D. Barthalow , William E. Hull , Claude R. Zimmerman
IPC分类号： B66C23/687 , B66C23/693 , B66C23/70 , F15B13/01 , F15B13/04 , F15B15/14 , G05D7/01 , B66C23/04
CPC分类号： G05D7/014 , B66C23/705 , F15B13/01 , F15B13/0405 , F15B15/1457 , F15B15/149 , G05D7/005 , Y10T137/7774 , Y10T137/87378
摘要： An electro-hydraulic operating system for an extensible boom includes one or more hydraulic cylinders for imparting relative motion between the boom sections to retract the boom according to an electronically stored program of sequences of movement and speeds. A source of pressurized hydraulic fluid is fed through appropriate control valves which include solenoid valves in fluid communication with a source of pressurized hydraulic fluid. The solenoid control valves are supplied with control currents proportional to the desired flow rates of fluid to the hydraulic cylinders in order to achieve speed and position control according to the stored program. A metering valve structure is provided for operation in conjunction with the solenoid control valves. The metering valve includes an associated pilot valve which receives variable pressure signals from the solenoid control valves to achieve the metering of fluid to the hydraulic cylinders in proportion to the characteristics of the control current supplied to the solenoid valves. The electrical control signals are such that the hydraulic cylinders may move associated boom sections at gradually increasing speeds during a starting period of any cycle of movement of the section, at a substantially constant speed during an intermediate period of movement and at a gradually decreasing speed during a stopping period preceding the end of the cycle of movement, thereby providing soft start and soft stop of the sections.
摘要翻译：用于可伸缩起重臂的电液操作系统包括一个或多个液压缸，用于在悬臂段之间施加相对运动，以根据电子存储的运动和速度序列来缩回吊臂。加压液压流体源通过适当的控制阀进给，该控制阀包括与加压液压流体源流体连通的电磁阀。电磁控制阀被提供与流体到液压缸的期望流量成比例的控制电流，以便根据存储的程序实现速度和位置控制。提供计量阀结构以与电磁控制阀一起操作。计量阀包括相关联的先导阀，其接收来自电磁控制阀的可变压力信号，以实现与提供给电磁阀的控制电流的特性成比例地向液压缸计量流体。电控制信号使得液压缸可以在部分的任何运动周期的起始时段期间以逐渐增加的速度移动相关的起重臂部分，在中间移动期间以一个基本上恒定的速度并且在逐渐减小的速度期间在运动循环结束之前的停止时段，从而提供部分的软启动和软停止。

2. 发明授权

US6029559A Telescoping system with multiple single-stage telescopic cylinders 失效
标题翻译：具有多个单级伸缩缸的伸缩系统
公开(公告)号：US6029559A
公开(公告)日：2000-02-29
申请号：US55299
申请日：1998-04-06
申请人： Henry D. Barthalow , Claude R. Zimmerman
发明人： Henry D. Barthalow , Claude R. Zimmerman
IPC分类号： B66C23/687 , B66C23/70 , F15B11/12 , F15B11/20 , F15B15/16 , F15B11/18
CPC分类号： F15B11/125 , B66C23/705 , F15B11/205 , F15B15/16
摘要： The telescoping system includes a first fluid motor and a second fluid motor. The first fluid motor includes a first extension chamber and a first retraction chamber, and the second fluid motor includes a second extension chamber and a second retraction chamber. A hydraulic control system in the telescoping system controls the supply of hydraulic fluid to the first fluid motor and between the first fluid motor and the second fluid motor such that the first and second fluid motors operate independently.
摘要翻译：伸缩系统包括第一流体马达和第二流体马达。第一流体马达包括第一延伸室和第一回缩室，第二流体马达包括第二延伸室和第二回缩室。伸缩系统中的液压控制系统控制向第一流体马达和第一流体马达与第二流体马达之间的液压流体的供应，使得第一和第二流体马达独立运行。

3. 发明授权

US6116140A Telescoping system with multi-stage telescopic cylinder 失效
标题翻译：带多级伸缩缸的伸缩系统
公开(公告)号：US6116140A
公开(公告)日：2000-09-12
申请号：US55239
申请日：1998-04-06
申请人： Henry D. Barthalow , Claude R. Zimmerman
发明人： Henry D. Barthalow , Claude R. Zimmerman
IPC分类号： B66C23/687 , F15B15/16 , F15B11/18
CPC分类号： F15B15/16
摘要： The telescoping system includes a first and second fluid motor. The first fluid motor includes a first cylinder and a second cylinder nested in the first cylinder. The second fluid motor includes the second cylinder and a piston disposed in the second cylinder. The second cylinder has a double barrel outer wall forming a hydraulic fluid passageway. A hydraulic control system in the telescoping system includes a single control valve, solenoid valves, and holding valves, and controls extension and retraction of the telescoping system.
摘要翻译：伸缩系统包括第一和第二流体马达。第一流体马达包括嵌套在第一气缸中的第一气缸和第二气缸。第二流体马达包括第二气缸和设置在第二气缸中的活塞。第二圆筒具有形成液压流体通道的双筒外壁。伸缩系统中的液压控制系统包括单个控制阀，电磁阀和保持阀，并控制伸缩系统的伸缩。

4. 发明授权

US5911239A Metering valve 失效
标题翻译：计量阀
公开(公告)号：US5911239A
公开(公告)日：1999-06-15
申请号：US917871
申请日：1997-08-27
申请人： Henry D. Barthalow , William E. Hull , Claude R. Zimmerman
发明人： Henry D. Barthalow , William E. Hull , Claude R. Zimmerman
IPC分类号： B66C23/687 , B66C23/693 , B66C23/70 , F15B13/01 , F15B13/04 , F15B15/14 , G05D7/01 , F16K17/18
CPC分类号： G05D7/014 , B66C23/705 , F15B13/01 , F15B13/0405 , F15B15/1457 , F15B15/149 , G05D7/005 , Y10T137/7774 , Y10T137/87378
摘要： The metering valve includes a housing assembly defining a metering cavity therein. At least one inlet port supplies fluid to be metered to the cavity, and at least one output port outputs metered fluid from the cavity. A valve seat in the cavity is disposed between the input and output ports, a pilot chamber and a pilot port to the pilot chamber. A control element in the pilot chamber is displaceable in proportion to the pressure of pilot fluid input to the pilot port. A valve spool is mounted for reciprocating movement in the metering cavity, and the spool is coupled to the control element and displaceable therewith. The spool has a metering flange for operative engagement with the valve seat in the cavity. The position of the metering flange with respect to the valve seat controls variable flow rates of fluid between the input port and output port of the valve housing assembly. A thermal relief valve is disposed within the spool and movable therewith, and the thermal relief valve vents fluid in the cavity through the input port when the pressure of fluid in the cavity exceeds a predetermined limit.
摘要翻译：计量阀包括在其中限定计量腔的壳体组件。至少一个入口端口将要计量的流体供应到空腔，并且至少一个输出端口从空腔输出计量流体。空腔中的阀座设置在输入和输出端口之间，先导室和到先导室的先导端口。先导室中的控制元件可以与输入到先导端口的先导流体的压力成比例地移位。安装阀芯以在计量腔中往复运动，并且阀芯联接到控制元件并与其一起移位。阀芯具有用于与空腔中的阀座有效接合的计量凸缘。计量法兰相对于阀座的位置控制阀壳组件的输入端口和输出端口之间流体的可变流量。热溢流阀设置在阀芯内并随其移动，并且当空腔中的流体压力超过预定极限时，热溢流阀通过输入端口将空腔中的流体排出。

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