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公开(公告)号：US08142132B2
公开(公告)日：2012-03-27
申请号：US12348484
申请日：2009-01-05
IPC分类号： E02F3/26
CPC分类号： E02F3/439
摘要： The present invention is directed to a control circuit for automatically bringing a hydraulically operated work arm into a particular position without having to manually reverse the direction of the hydraulic operating system.
摘要翻译： 本发明涉及一种用于将液压操作的工作臂自动地引入特定位置的控制电路，而不必手动地逆转液压操作系统的方向。
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公开(公告)号：US4942935A
公开(公告)日：1990-07-24
申请号：US380000
申请日：1989-07-14
申请人： Richard J. Lech
发明人： Richard J. Lech
摘要： In general, an auxiliary system for steering a vehicle includes a power steering unit coupled to the vehicle steering wheel so that the steering unit is thereby made capable of being manually powered by a vehicle operator for providing a supply of fluid at a first pressure. Valve means is connected between the steering unit and a pressure intensification device for selectively providing motive power to the device. Actuator means is connected between the device and the steering linkage of a vehicle for steering movement of the wheels. The intensification device is powered for rotation by the fluid at the first pressure when the steering unit is manually operated. The intensification device thereby delivers hydraulic fluid to the actuator means at a second pressure for steering the vehicle during auxiliary conditions.
摘要翻译： 通常，用于转向车辆的辅助系统包括联接到车辆方向盘的动力转向单元，使得转向单元由此能够由车辆操作者手动动力，以在第一压力下提供流体供应。 阀装置连接在转向单元和压力增强装置之间，用于选择性地向装置提供动力。 致动器装置连接在装置和车辆的转向联动装置之间以用于车轮的转向运动。 当手动操作转向装置时，增压装置由第一压力下的流体供给动力。 增强装置因此在辅助条件下以用于转向车辆的第二压力将液压流体输送到致动器装置。
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公开(公告)号：US06941687B2
公开(公告)日：2005-09-13
申请号：US09962894
申请日：2001-09-25
申请人： Eric Sharkness , Dennis Heyne , Richard J. Lech
发明人： Eric Sharkness , Dennis Heyne , Richard J. Lech
CPC分类号： E02F3/384 , E02F9/2207
摘要： An electronic control for damping oscillation of a swinging backhoe assembly includes a crossover valve that connects the hydraulic lines that supply hydraulic fluid to the boom swing cylinders to each other whenever an electronic controller senses incipient oscillation or swinging of the backhoe assembly. The electronic controller senses such parameters as pressure in the conduits and the position of the operator controls or the position of the boom swing control valve that the operator controls to determine incipient oscillation when the backhoe assembly is stopped. The crossover valve may remain open for a predetermined period of time.
摘要翻译： 一种用于阻尼摆动式反铲组件的振动的电子控制装置包括一个交叉阀，当交叉控制器感测到反铲组件的初始振荡或摆动时，连接将液压流体供应至起重臂摆动缸的液压管路。 电子控制器感测诸如管道中的压力和操作员控制的位置或操作员控制的起重臂摆动控制阀的位置以确定反铲组件停止时初始振荡的参数。 交叉阀可以保持打开预定的时间段。
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4.发明授权公开(公告)号：US06474064B1
公开(公告)日：2002-11-05
申请号：US09661348
申请日：2000-09-14
申请人： Dennis J. Heyne , Richard J. Lech , Eric Sharkness
发明人： Dennis J. Heyne , Richard J. Lech , Eric Sharkness
IPC分类号： F16D3102
CPC分类号： E02F9/2207
摘要： The invention provides a system for regulating pressure equalization in hydraulic mechanisms to suppress oscillation in heavy equipment. The system includes a first and second hydraulic lines, a crossover valve in communication with each of the first and second hydraulic lines, a timing system in communication with the crossover valve, and a motion detector in communication with a heavy equipment component. The motion detector senses a linkage motion and operatively opens the crossover valve, which remains open as directed by the timing system.
摘要翻译： 本发明提供一种用于调节液压机构中的压力平衡以抑制重型设备中的振荡的系统。 该系统包括第一和第二液压管线，与第一和第二液压管线中的每一个连通的交换阀，与交叉阀连通的定时系统，以及与重型设备部件连通的运动检测器。 运动检测器感测到联动运动并且可操作地打开交叉阀，其按照定时系统的指示保持打开。
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公开(公告)号：US6029445A
公开(公告)日：2000-02-29
申请号：US233876
申请日：1999-01-20
申请人： Richard J. Lech
发明人： Richard J. Lech
CPC分类号： F15B11/165 , E02F9/2203 , E02F9/2221 , E02F9/2239 , E02F9/226 , E02F9/2296 , F15B11/17 , F15B2211/20538 , F15B2211/20546 , F15B2211/20584 , F15B2211/265 , F15B2211/30525 , F15B2211/3144 , F15B2211/31588 , F15B2211/329 , F15B2211/365 , F15B2211/615 , F15B2211/62 , F15B2211/71 , F15B2211/781
摘要： A variable flow hydraulic system including a fixed displacement pump and a variable displacement pump for supplying pressurized hydraulic fluid in a machine is disclosed herein. Along with the dual pumps, the system includes a reservoir, a flow sensitive unloading valve, and a conduit system for distributing fluid flow between the system components. The reservoir stores fluid for use in a work circuit with an actuator for performing work in response to applied fluid flow. The fixed and variable displacement pumps are driven by a power source (e.g., an engine) to provide a fixed and a variable fluid flow, respectively. The variable flow is applied to the work circuit. As for the fixed flow, the unloading valve switches the fixed flow to either bypass or be applied to the work circuit in response to a flow signal, which depends upon the fluid flow being applied to the work circuit. The flow signal can be a differential pressure signal generated as the flow applied to the work circuit passes through a restriction in the conduit which supplies fluid flow to the work circuit. As the fixed flow is switched to and bypassed from the work circuit, the inherent flow compensation characteristics of the variable displacement pump provide for smooth, accurate, responsive and efficient machine operation.
摘要翻译： 本文公开了一种包括固定排量泵和用于在机器中供应加压液压流体的可变排量泵的可变流量液压系统。 与双泵一起，系统包括储存器，流量敏感卸载阀和用于在系统部件之间分配流体流动的管道系统。 储存器存储用于工作回路中的流体，其具有用于响应于施加的流体流动执行工作的致动器。 固定和可变排量泵由动力源（例如，发动机）驱动以分别提供固定和可变流体流。 可变流量应用于工作电路。 对于固定流量，卸载阀将固定流量切换到旁路，或者响应于施加到工作回路的流体流动的流量信号而被施加到工作回路。 流动信号可以是当施加到工作回路的流动通过向工作回路提供流体流动的管道中的限制时产生的差压信号。 当固定流量从工作回路切换到旁路时，可变排量泵的固有流量补偿特性提供平稳，准确，响应和效率高的机器操作。
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公开(公告)号：US3962870A
公开(公告)日：1976-06-15
申请号：US570974
申请日：1975-04-23
申请人： Richard J. Lech
发明人： Richard J. Lech
CPC分类号： E02F9/2239 , E02F9/2292 , F15B11/17 , F15B2211/20538 , F15B2211/20553 , F15B2211/20584 , F15B2211/25 , F15B2211/71 , F15B2211/781
摘要： A hydraulic pump arrangement and control circuit for supplying fluid at high volume and high pressure to a work circuit. The system utilizes a fixed displacement pump, a variable displacement pump with a compensator, and a relief valve at a pressure setting higher than the variable displacement pump's compensator setting.
摘要翻译： 一种液压泵装置和控制回路，用于以高容量和高压力向工作回路供应流体。 该系统采用固定排量泵，带有补偿器的可变排量泵以及压力设定高于可变排量泵补偿器设定的安全阀。
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公开(公告)号：US09347200B2
公开(公告)日：2016-05-24
申请号：US13487622
申请日：2012-06-04
CPC分类号： E02F3/964 , E02F9/2232 , E02F9/2282 , E02F9/2296 , F04B49/002 , F04B49/08 , F04B49/12 , F15B13/0416 , F15B2211/605 , F15B2211/6051 , F15B2211/6057 , F15B2211/65
摘要： A fluid control system including a variable displacement pump having a load system control and configured to operate in an open center mode. A pump control is operable between a first arrangement and a second arrangement. The pump control receives pressurized fluid from a first load sensor pressure in fluid communication with the pump and an actuator return pressure in fluid communication with an actuator configured to operate using pressurized fluid from the system, the pump control providing a selective pump control pressure to the pump load system control. When the system is operating in a standby mode, the pump operates in a first minimized displacement condition. When the system is in a stall mode, the pump operates in a second minimized displacement condition.
摘要翻译： 一种流体控制系统，包括具有负载系统控制并被配置为以开放中心模式操作的可变排量泵。 泵控制器可在第一布置和第二布置之间操作。 泵控制器从与泵流体连通的第一负载传感器压力接收加压流体，并且致动器返回压力与构造成使用来自系统的加压流体进行操作的致动器流体连通，泵控制器向该控制器提供选择性泵控制压力 泵负载系统控制。 当系统在待机模式下运行时，泵在第一最小位移条件下运行。 当系统处于失速模式时，泵在第二最小位移条件下运行。
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公开(公告)号：US20080006468A1
公开(公告)日：2008-01-10
申请号：US11755324
申请日：2007-05-30
IPC分类号： A01B69/00
摘要： A multiple-speed steering system for an off-road vehicle having a loading mechanism and a hydraulic steering system associated with guiding the vehicle. The multiple-speed steering system includes a hydraulic steering cylinder and a first component fluidly coupled to the steering cylinder to provide a primary metered flow of hydraulic fluid to the steering cylinder. A second component is selectively fluidly coupled to the steering cylinder to provide a supplemental metered flow in addition to the primary metered flow of hydraulic fluid to the steering cylinder. Addition of the supplemental metered flow is selectable by an operator of the vehicle.
摘要翻译： 一种用于越野车辆的多速转向系统，其具有与引导车辆相关联的装载机构和液压转向系统。 多速转向系统包括液压转向缸和流体地联接到转向缸的第一部件，以向转向缸提供液压流体的主要计量流。 第二部件选择性地流体地联接到转向缸，以提供除了液压流体的主要计量流量到转向缸之外的补充计量流量。 补充计量流的添加可由车辆的操作者选择。
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公开(公告)号：US06354089B1
公开(公告)日：2002-03-12
申请号：US09520464
申请日：2000-03-08
申请人： Richard J. Lech , Larry A. Johnson
发明人： Richard J. Lech , Larry A. Johnson
IPC分类号： F17C300
CPC分类号： F15B21/042 , E02F9/00 , E02F9/0866 , E02F9/2292
摘要： A work vehicle is disclosed, the vehicle including first and second hydraulic circuits provided with first and second fluids, wherein the fluids are to be is kept apart; at least one fluid cooler for cooling at least one of the fluids; and a means for transferring heat from the hotter fluid to the cooler fluid. Also disclosed is a fluid cooling apparatus for a work vehicle, the work vehicle including a transmission with a first fluid and a hydraulic circuit with a second fluid. The cooling apparatus includes at least one fluid cooler for cooling at least one of the fluids, and an apparatus for transferring heat from the hotter fluid to the other fluid. Also disclosed is a method of cooling fluids of a work vehicle provided with a first hydraulic circuit including a first fluid and a second hydraulic circuit including a second fluid, the fluids to be kept separate. At least one of the hydraulic circuits includes a fluid cooler and a pump. The vehicle is further provided with a heat transfer apparatus for transferring heat from the hotter fluid to the other fluid. The method includes steps of pumping the first or second fluid through the fluid cooler, and pumping the first or second fluid through the heat transfer apparatus.
摘要翻译： 公开了一种作业车辆，所述车辆包括设置有第一和第二流体的第一和第二液压回路，其中所述流体将被分离; 至少一个用于冷却所述流体中的至少一个的流体冷却器; 以及用于将热量从较热的流体传递到较冷流体的装置。 还公开了一种用于工作车辆的流体冷却装置，所述作业车辆包括具有第一流体的变速器和具有第二流体的液压回路。 冷却装置包括用于冷却至少一种流体的至少一个流体冷却器，以及用于将热量从热流体传递到另一流体的装置。 还公开了一种冷却工作车辆的流体的方法，该作业车辆具备包括第一流体的第一液压回路和包括第二流体的第二液压回路，所述第二液压回路被保持分离。 至少一个液压回路包括流体冷却器和泵。 车辆还设置有用于将热量从热流体传递到另一流体的传热装置。 该方法包括以下步骤：将第一或第二流体泵送通过流体冷却器，并且通过传热装置泵送第一或第二流体。
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公开(公告)号：US5471908A
公开(公告)日：1995-12-05
申请号：US349133
申请日：1994-12-02
申请人： Richard J. Lech
发明人： Richard J. Lech
CPC分类号： E02F9/2221
摘要： Disclosed is a hydraulic system for a machine having a pump, a steering circuit and first and second hydraulic implements, e.g., a hydraulic loader and a backhoe, powered by first and second valve sections, respectively. In the improvement, the system includes a priority valve receiving fluid from the pump and configured for movement between a first position and a second position. In the first position, the priority valve flows fluid to the steering circuit and to the second valve section and in the second position, the priority valve flows fluid to the both valve sections which are connected in series.
摘要翻译： 公开了一种用于机器的液压系统，其具有分别由第一和第二阀部分驱动的泵，转向回路和第一和第二液压工具，例如液压装载机和反铲。 在改进中，系统包括优先阀，其从泵接收流体并且构造成用于在第一位置和第二位置之间移动。 在第一位置，优先阀将流体流向转向回路和第二阀部，并且在第二位置，优先阀将流体流动到串联连接的两个阀部。
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