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1.发明授权Dual pump hydraulic control system with predetermined flow crossover provision 失效双泵液压控制系统，具有预定的流量分配
公开(公告)号：US4078681A
公开(公告)日：1978-03-14
申请号：US717426
申请日：1976-08-24
申请人： Jesse L. Field, Jr.
发明人： Jesse L. Field, Jr.
CPC分类号： B62D11/18 , E02F9/2239 , E02F9/2292 , E02F9/2296 , F15B11/17 , F15B2211/20546 , F15B2211/20576 , F15B2211/30505 , F15B2211/3116 , F15B2211/329 , F15B2211/40515 , F15B2211/41554 , F15B2211/428 , F15B2211/46 , F15B2211/6355 , F15B2211/67 , F15B2211/7142
摘要： A dual pump hydraulic control system with a predetermined flow crossover provision is disclosed including a first hydraulic control circuit having a first source of fluid pressure, a first motor, a first distributor valve in communication with the first source and moveable into an actuating condition for directing fluid to the first motor, a second motor, a second distributor valve in interrupted series communication with the first distributor valve and moveable into an actuating condition for directing fluid to the second motor; a second hydraulic control circuit having a second source of fluid pressure, a third motor, a third distributor valve in communication with the second source for directing fluid to the third motor; and a crossover valve and resolver network responsive to the actuating condition of the first distributor valve and to the actuating condition of the second distributor valve for communicating fluid from the second source to the second motor to supplement fluid from the first source to the second motor while preventing full fluid flow from both the first and second sources thereto. Such hydraulic system is particularly adapted to simultaneous swing and stick-in movement of a hydraulic excavator.
摘要翻译： 公开了一种具有预定流量分配设备的双泵液压控制系统，包括具有第一液压源的第一液压控制回路，第一马达，与第一源连通的第一分配器阀，并且可移动到用于引导的致动条件 与第一电动机的流体，第二电动机，与第一分配阀断续串联连通的第二分配器阀，并且可移动到用于将流体引导到第二电动机的致动状态; 具有第二液压源的第二液压控制回路，第三马达，与第二源连通的第三分配器阀，用于将流体引导到第三马达; 以及响应于第一分配阀的致动状态和第二分配器阀的致动状态的交叉阀和旋转变压器网络，用于将流体从第二源传递到第二电动机，以将流体从第一源补充到第二电动机，同时 防止来自第一和第二源的全部流体流动。 这种液压系统特别适用于液压挖掘机的同时摆动和粘接运动。
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公开(公告)号：US5088880A
公开(公告)日：1992-02-18
申请号：US621493
申请日：1990-12-03
申请人： Jesse L. Field, Jr.
发明人： Jesse L. Field, Jr.
IPC分类号： B66F9/14
CPC分类号： B66F9/143
摘要： A control system for selectively moving load engaging forks along a carriage frame in first and second modes of operation is provided. In the first mode of operation the first and second forks are movable in unison and at the same rate of speed along the carriage frame and in the second mode of operation the forks are individually selectively movable. The control system includes a main control valve and first, second, and third selector valves for directing fluid flow delivered by the main control valve to first and second fluid operated jacks connected to the first and second forks, respectively, and the carriage frame. The third selector valve directs fluid flow between head ends of the jacks in the first mode of operation so that the first and second forks move in unison on the carriage frame. The control system is particularly suited for use on a material handling vehicle having a lift mast assembly.
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公开(公告)号：US3972264A
公开(公告)日：1976-08-03
申请号：US533181
申请日：1974-12-16
CPC分类号： F15B13/0402 , F16K11/0704 , F16K35/00
摘要： A hydraulically actuated detent mechanism for positioning an elongated spool in the bore of a control valve has circumferentially spaced apart, radial bores opening at their inner ends to the valve bore and having their outer ends in communication with a source of fluid pressure, a detent plunger arranged in each of the radial bores and tending to be urged into balanced detent engagement with axially spaced apart depressions in the spool by fluid pressure in the outer ends of the radial bores. Preferably, the detent mechanism also includes kickout means which are operable for releasing the spool from detent engagement through the introduction of fluid pressure into the inner ends of the radial bores.
摘要翻译： 用于将细长阀芯定位在控制阀的孔中的液压致动止动机构具有周向间隔开的径向孔，其内端在阀孔处开口，并且其外端与流体压力源连通，止动柱塞 布置在每个径向孔中，并且倾向于通过径向孔的外端中的流体压力被推动成与阀芯中的轴向间隔开的凹陷的平衡制动接合。 优选地，止动机构还包括脱出装置，其可操作以通过将流体压力引入径向孔的内端而将阀芯从止动接合释放。
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公开(公告)号：US4487106A
公开(公告)日：1984-12-11
申请号：US548736
申请日：1983-11-04
申请人： Jesse L. Field, Jr.
发明人： Jesse L. Field, Jr.
摘要： Fluid control systems frequently eliminate use of fluid operated jack protecting relief valves because additional visibility blocking and damage prone conduits are required to connect the relief valves to the reservoir. A fluid operated system having a controlling valve, a selecting valve, a fluid operated jack, a relief valve, a reservoir and a bypass valve is provided to controllably connect the relief valve to other portions of the system in response to the position of controlling valve and selecting valve. Therefore, no additional conduits are required to connect the relief valve to the reservoir and thus the problems of reduced visibility, premature conduit leakage and conduit damage are eliminated. The fluid control system is particularly suited for use in a work vehicle such as a lift truck having a lift mast.
摘要翻译： 流体控制系统经常消除使用流体操作的千斤顶保护安全阀，因为需要额外的可见性阻挡和易损坏的管道将安全阀连接到储存器。 提供一种具有控制阀，选择阀，流体操作的千斤顶，安全阀，储存器和旁通阀的流体操作系统，以便响应于控制阀的位置可控地将安全阀连接到系统的其他部分 并选择阀门。 因此，不需要额外的管道来将安全阀连接到储存器，因此消除了可见性降低，导管泄漏过早和导管损坏的问题。 流体控制系统特别适用于工作车辆，例如具有升降桅杆的起重车。
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公开(公告)号：US4208874A
公开(公告)日：1980-06-24
申请号：US937233
申请日：1978-08-28
申请人： Jesse L. Field, Jr.
发明人： Jesse L. Field, Jr.
CPC分类号： F15B11/16 , F15B2211/20553 , F15B2211/25 , F15B2211/3116 , F15B2211/40515 , F15B2211/41509 , F15B2211/423 , F15B2211/455 , F15B2211/71
摘要： A fluid system (10, 10A, 10B) which supplies two work systems (26, 38) with respective different fluid flow rates, including a pressure-flow compensated pump (12), a first control valve (18) for delivering the fluid to one of the work systems, a second control valve (28) for receiving the fluid from the first control valve and delivering the fluid to the other of the work systems (38), a first device ([20,42,50] or [20,56,58] or [20,90,96]) coupled between the pump output and the first control valve, for providing one control signal causing the pump to produce one flow rate of fluid for activating the one work system (26), and a second device ([20,40,44,46,50] or [22,58,66,72,78] or [22,88,92,96,102]) for overriding the first device for providing another control signal causing the pump to produce another flow rate of fluid for actuating the other work system.
摘要翻译： 一种用于向两个工作系统（26,38）提供各自不同的流体流速的流体系统（10,10A，10B），包括压力流量补偿泵（12），用于将流体输送到 工作系统之一，用于从第一控制阀接收流体并将流体输送到另一个工作系统（38）的第二控制阀（28），第一装置（[20,42,50]或[ 20,56,58]或[20,90,96]），其耦合在所述泵输出和所述第一控制阀之间，用于提供一个控制信号，使所述泵产生用于激活所述一个工作系统（26）的一个流速的流体， 以及用于覆盖第一设备以提供另一控制信号的第二设备（[20,40,44,46,50]或[22,58,66,72,78]或[22,88,92,96,102]） 导致泵产生用于驱动另一个工作系统的另一流量的流体。
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公开(公告)号：US4011920A
公开(公告)日：1977-03-15
申请号：US607511
申请日：1975-08-25
IPC分类号： B60K17/10 , B62D11/04 , B62D11/18 , F16H59/58 , F16H61/40 , F16H61/4148 , F16H61/456
CPC分类号： F16H61/4148 , B62D11/005 , F16H61/40 , F16H61/456 , F16H59/58
摘要： A synchronized vehicle fluid drive system includes a vehicle, a pair of hydraulic motors operative to drive the opposite sides of the vehicle, a dual source of fluid pressure, a pair of open loop circuits individually communicating with the sources of fluid pressure and individually having a distributor valve for selectively communicating its respective fluid pressure source with one of said motors for operation thereof, and an equalizing line disposed in fluid communication intermediate the open loop circuits for assuring that the input flow to each of the motors is substantially the same when straight line travel of the vehicle is desired. Advantageously, a blocking valve may be disposed in the equalizing line for deactivating it upon receiving a steering signal.
摘要翻译： 同步车辆流体驱动系统包括车辆，一对液压马达，其可操作以驱动车辆的相对侧，双重流体压力源，一对开环回路，其单独与流体压力源连通并且分别具有 分配阀，用于选择性地将其相应的流体压力源与所述马达中的一个马达进行操作，以及在开环回路之间流体连通地设置的均衡管线，用于确保每个马达的输入流量在直线 需要车辆行驶。 有利地，阻挡阀可以设置在均衡管线中，用于在接收到转向信号时使其停用。
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