Method and system for regulating hydraulic pressure in heavy equipment

    公开(公告)号:US06530529B2

    公开(公告)日:2003-03-11

    申请号:US09972143

    申请日:2001-10-05

    CPC classification number: G05D23/022

    Abstract: The invention provides a method and system for regulating pressure equalization in hydraulic mechanisms. The system includes a main body, a thermal element positioned within the main body, a pin positioned adjacent to the thermal element, and an orifice spool in communication with the pin. The thermal element expands to force the pin to reposition the orifice spool, and restrict fluid flow through the main body. The method includes expanding a thermal polymer when temperature increases, contracting the thermal polymer when the temperature decreases, and metering fluid flow based on the expanding and contracting of the thermal polymer.

    Manifold apparatus for calibrating clutch fill times
    2.
    发明授权
    Manifold apparatus for calibrating clutch fill times 失效
    用于校准离合器填充时间的歧管装置

    公开(公告)号:US5902344A

    公开(公告)日:1999-05-11

    申请号:US671216

    申请日:1996-06-27

    Abstract: In a vehicle having a power shift transmission engageable in a plurality of forward gear ratios by engaging and disengaging first and second fluid clutches with a fluid from a fluid supply, a manifold apparatus for measuring a pressure of the fluid and simultaneously filling the first and second clutches with the fluid supply having a first clutch fill valve fluidly coupled to the first clutch to control the flow of the fluid to the first clutch; a second clutch fill valve fluidly coupled to the second clutch to control the flow of the fluid to the second clutch; a manifold fluidly coupled to the first and second clutch valves to conduct the fluid from the fluid supply to the first and second clutch valves; a first flow restrictor disposed between the manifold and the fluid supply to restrict the flow of the fluid from the fluid supply to the manifold; and a pressure transducer fluidly communicating with the manifold to generate a signal representative of the pressure of the fluid within the manifold, where the first and second clutches are not simultaneously engaged to provide any of the plurality of forward gear ratios.

    Abstract translation: 在具有动力换档变速器的车辆中,通过使来自流体供应源的流体接合和分离第一和第二流体离合器,可以接合多个前进档位;歧管装置,用于测量流体的压力并同时填充第一和第二 具有流体供应的离合器具有流体地联接到第一离合器的第一离合器填充阀,以控制流体到第一离合器的流动; 第二离合器填充阀,其流体地联接到所述第二离合器以控制流体到所述第二离合器的流动; 歧管,其流体地联接到所述第一和第二离合器阀,以将所述流体从所述流体供应传导到所述第一和第二离合器阀; 设置在所述歧管和所述流体供应源之间以限制所述流体从所述流体供应流到所述歧管的第一限流器; 以及与所述歧管流体连通以产生代表所述歧管内的流体的压力的信号的压力传感器,其中所述第一和第二离合器不同时接合以提供所述多个前进传动比中的任何一个。

    Clutch control valve
    3.
    发明授权
    Clutch control valve 有权
    离合器控制阀

    公开(公告)号:US06308812B1

    公开(公告)日:2001-10-30

    申请号:US09390873

    申请日:1999-09-07

    Abstract: A work vehicle configured for selectively applying power to a load and comprising a frame, a plurality of ground support devices movably secured to the frame, an engine supported by the frame, a source of hydraulic fluid at a pressure, a clutch for selectively coupling the engine to the load in response to a control signal, the clutch including a clutch actuator configured for engaging the clutch upon receipt of an actuating fluid at least a first predetermined pressure, the clutch configured to dissipate heat of engagement to a flow of a lube fluid; and a clutch control valve located intermediate the fluid source and the clutch and disposed in the path of the actuating fluid and the lube fluid. The control valve is configured to control flow of the lube fluid to the clutch to a first predetermined rate while the clutch is not engaged, to control flow of the lube fluid to the clutch to a second predetermined rate at least for a predetermined length of time prior to engagement of the clutch, and to control flow of the actuating fluid at a predetermined pressure to the clutch actuator after the flow rate of the lube fluid has been increased.

    Abstract translation: 一种工作车辆,其构造成用于选择性地向负载施加动力并且包括框架,可移动地固定到框架的多个地面支撑装置,由框架支撑的发动机,压力下的液压流体源,用于选择性地联接 所述离合器包括离合器致动器,所述离合器致动器构造成用于在接收至少第一预定压力的致动流体时接合所述离合器,所述离合器被配置为将接合热量散发到润滑油流动 ; 以及位于流体源和离合器之间并设置在致动流体和润滑油流体的路径中的离合器控制阀。 所述控制阀构造成在所述离合器未接合的同时控制所述润滑油流向所述离合器的流量,以控制所述润滑油流入所述离合器至第二预定速率至少达预定时间长度 在离合器接合之前,并且在润滑剂流体的流量增加之后控制致动流体在预定压力下对离合器致动器的流动。

    Brake control system and related method
    4.
    发明授权
    Brake control system and related method 失效
    制动控制系统及相关方法

    公开(公告)号:US5904228A

    公开(公告)日:1999-05-18

    申请号:US808018

    申请日:1997-03-03

    Abstract: A simplified brake control system comprises a source of pressurized fluid, a spring-set brake with a hydraulic release mechanism and a control valve connected between the brake and the source. The control valve has a valve body and a flow control mechanism in the body and mounted for movement between a first (solenoid-energized) position and a second (solenoid-de-energized) position. A one-way check valve is built into the valve body. How the system operates depends upon two factors, namely, (a) whether the valve flow control mechanism is in its first or its second position, and (b) the relationship of the pressure of the source, i.e., the first pressure, and the second pressure in the release mechanism. When the flow control mechanism is in the first position, the release mechanism may be pressurized for brake release. And when such mechanism is in the second position, the release mechanism is vented to the reservoir through the brake port, the second passage and the drain port. A new method for controlling a brake is also disclosed.

    Abstract translation: 简化的制动控制系统包括加压流体源,具有液压释放机构的弹簧固定制动器和连接在制动器和源之间的控制阀。 控制阀具有主体中的阀体和流量控制机构,并且安装成用于在第一(螺线管通电)位置和第二(螺线管去电)位置之间移动。 阀体内装有单向止回阀。 系统如何工作取决于两个因素,即(a)阀门流量控制机构是否处于其第一或第二位置,以及(b)源的压力(即第一压力)与 释放机构的第二压力。 当流量控制机构处于第一位置时,释放机构可以被加压以用于制动器释放。 并且当这种机构处于第二位置时,释放机构通过制动口,第二通道和排放口被排放到储存器。 还公开了一种用于控制制动器的新方法。

    Nestable fluid coupler
    5.
    发明授权
    Nestable fluid coupler 有权
    可巢式流体耦合器

    公开(公告)号:US06405815B1

    公开(公告)日:2002-06-18

    申请号:US09478465

    申请日:2000-01-06

    Abstract: The hydraulic coupler is used for connecting a valve to a tool used with a vehicle having a hydraulic pump and fluid communication with the valve through hydraulic plumbing. The hydraulic coupler comprises a coupler body having a base portion, a neck portion and a connector portion. The coupler body is two connector chambers in the connector portion which arc in fluid communication with two apertures, which when the hydraulic coupler is mounted on the valve, are in fluid communication with the valve. A connector assembly, typically of the quick-connect type, is mounted in each connector chamber and is configured to receive hydraulic plumbing to connect the valve to the tool. One embodiment provides that the coupler body is narrower than the valve on which it is mounted. Another embodiment provides before the connector portion to be offset from the neck portion thereby allowing the hydraulic couplers to be mounted immediately adjacent to each other but rotate at a 180° in relation to the other hydraulic coupler. Such arrangement forms a nested stack of hydraulic couplers mounted on the work vehicle at convenient locations on the vehicle.

    Abstract translation: 液压联轴器用于将阀连接到与具有液压泵的车辆一起使用的工具,并通过液压管道与阀流体连通。 液压联动器包括具有基部,颈部和连接器部分的联接器主体。 联接器主体是连接器部分中的两个连接器室,其与两个孔流体连通,当液压耦合器安装在阀上时,该连接器腔与阀流体连通。 通常为快速连接型的连接器组件安装在每个连接器室中,并且构造成接收液压管道以将阀连接到工具。 一个实施例提供了耦合器主体比安装在其上的阀更窄。 另一个实施例在连接器部分之前提供从颈部部分偏移,从而允许液压耦合器彼此紧邻地安装,但是相对于另一个液压耦合器旋转180°。 这种布置在车辆上的便利位置形成了安装在工作车辆上的嵌套的液压耦合器堆叠。

    Control apparatus for a transmission and the like
    6.
    发明授权
    Control apparatus for a transmission and the like 失效
    变速器用控制装置等

    公开(公告)号:US5377801A

    公开(公告)日:1995-01-03

    申请号:US987615

    申请日:1992-12-09

    Applicant: Guy T. Stoever

    Inventor: Guy T. Stoever

    Abstract: A control apparatus for selectively operating any one of at least three fluid pressure operated devices at any given time. The control system includes first and second valves arranged in combination with each other and which are hydraulically interposed between a fluid pressure source and each of the fluid operated devices. Each valve is shiftable between first and second positions. Hydraulic logic circuitry selectively connects the first valve to the fluid operated devices and selectively connects the second valve to the first valve whereby, for any one position of the two valves, only one of the fluid operated devices is connected to the fluid pressure source while the remainder of the fluid operated devices are open to exhaust. First and second ON/OFF solenoid operated valves facilitate positioning of the first and second valves in response to electrical signals received by the ON/OFF valves.

    Abstract translation: 一种用于在任何给定时间选择性地操作至少三个流体压力操作的装置中的任何一个的控制装置。 控制系统包括彼此组合布置并且液压地插入在流体压力源和每个流体操作装置之间的第一和第二阀。 每个阀可在第一和第二位置之间移动。 液压逻辑电路选择性地将第一阀连接到流体操作的装置,并且选择性地将第二阀连接到第一阀,由此,对于两个阀的任何一个位置,只有一个流体驱动装置连接到流体压力源,而 流体操作装置的其余部分打开排气。 第一和第二ON / OFF电磁​​阀有助于响应于由ON / OFF阀接收到的电信号来定位第一和第二阀。

    Auto-modulating hydraulic circuit and related method
    8.
    发明授权
    Auto-modulating hydraulic circuit and related method 失效
    自动调节液压回路及相关方法

    公开(公告)号:US5743366A

    公开(公告)日:1998-04-28

    申请号:US717684

    申请日:1996-09-23

    CPC classification number: F16D25/14 F16D48/02 F16D2048/0209

    Abstract: Disclosed is a modulating hydraulic circuit for controlling a clutch such as the clutch on a power takeoff (PTO) shaft. The circuit includes a throttling valve having (a) an inlet port for receiving hydraulic fluid from a source, and (b) a discharge port connected to the clutch. The discharge port is also connected to an accumulator which is at an accumulator pressure. The discharge port and the clutch are at a pressure generally proportional to the accumulator pressure. As accumlator pressure rises at a controlled rate, the clutch is progressively engaged. Optionally, the circuit includes a brake control valve for "softly" disengaging a PTO shaft brake as the accumulator pressure rises. A method for controlling the clutch includes flowing hydraulic fluid through hydraulic lines to a throttling valve connected to an accumulator and to the clutch, increasing pressure in the lines and progressively engaging the clutch.

    Abstract translation: 公开了一种用于在动力输出(PTO)轴上控制诸如离合器的离合器的调节液压回路。 该回路包括节流阀,该节流阀具有(a)用于从源接收液压流体的入口端口,和(b)连接到离合器的排出口。 排放口也连接到处于蓄压器压力的蓄能器。 排出口和离合器处于与蓄能器压力成正比的压力。 当累加器压力以受控的速度上升时,离合器逐渐接合。 可选地,电路包括用于在蓄能器压力升高时“轻轻地”分离PTO轴制动器的制动控制阀。 用于控制离合器的方法包括将液压流体通过液压管路流到连接到蓄能器和离合器的节流阀,增加管线中的压力并逐渐接合离合器。

    Valve unit
    9.
    发明授权
    Valve unit 失效
    阀门单元

    公开(公告)号:US4716933A

    公开(公告)日:1988-01-05

    申请号:US919533

    申请日:1986-10-16

    Abstract: A valve unit for use in a load sensing system having a fluid operated cylinder. The valve unit permits positioning of an implement between the raise, lower, neutral and float positions and also provides for throttling of fluid flow to the cylinders as well as priority flow to the system. Float is obtained through a lock check valve which includes a main poppet maintained in a seated position by a spring biased pilot poppet. A pilot piston is positioned coaxially opposite the main poppet and is responsive to fluid pressure in the valve to act upon the pilot poppet and unseat the main poppet. In the float position, the fluid pressure within the valve may be stand-by pressure which acts upon the pilot piston to allow it gradual decent of the implement. The pilot pressure is communicated to the pilot piston through a centrally located passage. The location of the passage permits additional lock check valves to be easily added as needed. An adjustable priority flow control valve is included in the valve body for manual adjustment of the priority in the system and the flow rate of fluid.

    Abstract translation: 一种用于具有流体操作气缸的负载感测系统中的阀单元。 阀单元允许工具在升高,下降,中性和浮动位置之间进行定位,并且还提供流体流向气缸的节流以及优先流向系统。 浮子通过锁止止回阀获得,该止回阀包括通过弹簧偏压的先导提升阀保持在就座位置的主提升阀。 先导活塞与主提升阀同轴地定位,并且响应阀中的流体压力作用于飞行员提升阀并且使主提升阀卸下。 在浮动位置,阀内的流体压力可以是作用在先导活塞上的待机压力,以允许其逐渐体现工具。 先导压力通过位于中心的通道传导到先导活塞。 通道的位置允许根据需要容易地添加附加的锁止止回阀。 阀体中包含一个可调节的优先流量控制阀,用于手动调节系统的优先级和流体的流量。

    Electrically controlled pilot operated pressure regulator valve apparatus and method of operation of the same
    10.
    发明授权
    Electrically controlled pilot operated pressure regulator valve apparatus and method of operation of the same 有权
    电控先导式调压阀装置及其运行方法

    公开(公告)号:US08910657B2

    公开(公告)日:2014-12-16

    申请号:US11899524

    申请日:2007-09-06

    Applicant: Guy T. Stoever

    Inventor: Guy T. Stoever

    Abstract: The apparatus uses an electrical signal controlled valve, for instance, a proportional solenoid controlled valve, controlled by a controller, to control a pilot operated valve for regulating pressure of fluid in a port thereof in connection with a fluid operated system. A pressure sensor in connection with the port is used to monitor the regulated pressure. The regulated pressurized fluid in the port is also used, as required, as a component of the pilot signal. The valves are configured such that when the electrical control signal is absent or the electrically controlled valve is unresponsive thereto, the presence of pressurized fluid at a predetermined supply pressure, will automatically operate the pilot operated valve in cooperation with a biasing element thereof, for delivering pressurized fluid at a minimum or reduced regulated pressure.

    Abstract translation: 该装置使用电信号控制阀,例如由控制器控制的比例电磁控制阀,以控制先导操作阀,用于调节与流体操作系统相关的端口中的流体的压力。 与端口连接的压力传感器用于监控调节压力。 端口中调节的加压流体也根据需要用作导频信号的一个组成部分。 阀构造成使得当电控制信号不存在或电控阀不响应时,加压流体在预定供应压力下的存在将与其偏压元件协作地自动操作先导操作的阀,用于输送 加压流体以最小或减小的调节压力。

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