利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

67 条记录 (耗时 0.015 秒)

    Refuse vehicle control systems and methods
    1.
    发明授权
    Refuse vehicle control systems and methods 有权

    公开(公告)号：US11674534B2

    公开(公告)日：2023-06-13

    申请号：US17232244

    申请日：2021-04-16

    申请人： Oshkosh Corporation

    发明人： Derek Wente ,  Logan Gary ,  Jerrod Kappers

    IPC分类号： F15B11/16 ,  B65F3/04

    CPC分类号： F15B11/161 ,  B65F3/04 ,  F15B2211/205 ,  F15B2211/20553 ,  F15B2211/6652

    摘要： A refuse vehicle includes a chassis and a vehicle body. A variable displacement pump is positioned within the vehicle body and is configured to pump hydraulic fluid from a hydraulic fluid reservoir into a high pressure line of a hydraulic circuit. A lifting system on the vehicle includes at least one actuator in fluid communication with the variable displacement pump, which delivers pressurized hydraulic fluid from the hydraulic fluid reservoir to the actuator through the high pressure line to adjust a position of the actuator. A valve is positioned downstream of the variable displacement pump. In a first valve position, the valve restricts flow outward from the high pressure line. In a second valve position, the valve directs fluid from the high pressure line into a lower pressure line to reduce a hydraulic pressure within the high pressure line and adjust an output parameter of the variable displacement pump.

    Method for controlling a combined rotary/push movement
    2.
    发明授权
    Method for controlling a combined rotary/push movement 有权

    公开(公告)号：US09919907B2

    公开(公告)日：2018-03-20

    申请号：US14830837

    申请日：2015-08-20

    申请人： JUNGHEINRICH AKTIENGESELLSCHAFT

    发明人： Bernhard Hagl

    IPC分类号： B66F9/07 ,  B66F9/22 ,  B66F9/14 ,  F15B11/00 ,  F15B11/16

    CPC分类号： B66F9/22 ,  B66F9/07 ,  B66F9/147 ,  F15B11/003 ,  F15B11/161 ,  F15B2211/50509

    摘要： The invention relates to a method and device for controlling a combined rotary/push movement of a load-receiving means of an industrial truck, in particular a three-way stacker, both the rotary movement and the push movement being brought about by means of respective hydraulic elements (32, 34), which are supplied with hydraulic fluid by a single hydraulic pump (22) which is driven by an associated pump motor (24), and a performance characteristic of the hydraulic pump (22) being controlled according to a predetermined progression over time during the rotary/push movement; the industrial truck comprising a valve assembly (30) which is designed to be operated such that, below a threshold value for the hydraulic pressure provided by the hydraulic pump (22), only the rotary movement of the load-receiving means is brought about, while, above the threshold value, both the rotary movement and the push movement are brought about. Here, sensor means (36a, 36b) are provided which detect a temperature of the pump motor (24) and/or of the hydraulic pump (22), and the predetermined progression over time of the performance characteristic of the hydraulic pump (22) during the rotary/push movement is adapted according to a predetermined relationship depending on the temperature of the pump motor (24) and/or of the pump (22) detected by the sensor means (36a, 36b).

    HYDRAULIC DRIVE SYSTEM FOR CONSTRUCTION MACHINE
    4.
    发明申请
    HYDRAULIC DRIVE SYSTEM FOR CONSTRUCTION MACHINE 审中-公开
    液压驱动系统

    公开(公告)号：US20160333900A1

    公开(公告)日：2016-11-17

    申请号：US15030383

    申请日：2014-11-26

    申请人： Hitachi Construction Machinery Co., Ltd.

    发明人： Kiwamu TAKAHASHI ,  Yasutaka TSURUGA ,  Kazushige MORI ,  Yoshifumi TAKEBAYASHI ,  Natsuki NAKAMURA ,  Yasuharu OKAZAKI ,  Kenji YAMADA

    IPC分类号： F15B13/06 ,  F15B11/16 ,  E02F9/22 ,  F15B11/17

    CPC分类号： F15B13/06 ,  E02F3/325 ,  E02F9/2235 ,  E02F9/2267 ,  E02F9/2292 ,  E02F9/2296 ,  F15B11/161 ,  F15B11/17 ,  F15B2211/20507 ,  F15B2211/20523 ,  F15B2211/20546 ,  F15B2211/20553 ,  F15B2211/20576 ,  F15B2211/253 ,  F15B2211/255 ,  F15B2211/2656 ,  F15B2211/50554 ,  F15B2211/6355 ,  F15B2211/67

    摘要： The object is to make it possible to efficiently utilize rated output torque of the prime mover by performing total torque control with high precision through precise detection of absorption torque of the other hydraulic pump by use of a purely hydraulic structure and feedback of the absorption torque to the one hydraulic pump's side. For this purpose, the hydraulic drive system is equipped with: a torque feedback circuit 112v which is supplied with delivery pressure of a main pump 202 and load sensing drive pressure, modifies the delivery pressure of the main pump 202 to achieve a characteristic simulating the absorption torque of the main pump 202, and outputs the modified pressure; and a torque feedback piston 112f which is supplied with output pressure of the torque feedback circuit and controls displacement of a main pump 102 so as to decrease the displacement of the main pump 102 and thereby decrease maximum torque T12max as the output pressure increases. The torque feedback circuit 112v includes first and second variable pressure reducing valves 112g and 112q.

    摘要翻译： 目的是通过使用纯水力结构和吸收扭矩的反馈来精确地检测另一液压泵的吸收扭矩，通过高精度地执行总转矩控制来有效地利用原动机的额定输出转矩 一个液压泵的一侧。 为此，液压驱动系统配备有：被供应主泵202的输送压力和负载感测驱动压力的扭矩反馈电路112v，改变主泵202的输送压力，以实现模拟吸收的特性 主泵202的转矩，输出修正压力; 以及扭矩反馈活塞112f，其被提供有扭矩反馈回路的输出压力并控制主泵102的位移，以便减小主泵102的位移，从而随着输出压力的增加而减小最大转矩T12max。 扭矩反馈电路112v包括第一和第二可变减压阀112g和112q。

    REGENERATIVE CIRCUIT OF HYDRAULIC APPARATUS
    5.
    发明申请
    REGENERATIVE CIRCUIT OF HYDRAULIC APPARATUS 审中-公开
    液压装置再生电路

    公开(公告)号：US20160017897A1

    公开(公告)日：2016-01-21

    申请号：US14773277

    申请日：2014-02-27

    申请人： CATERPILLAR SARL

    发明人： Yuya KANENAWA ,  Shuhei ORIMOTO ,  Genta MINE ,  Yudai ADOMI

    IPC分类号： F15B11/16 ,  F15B11/024 ,  F15B21/08

    CPC分类号： F15B11/161 ,  F15B11/024 ,  F15B13/021 ,  F15B13/0405 ,  F15B21/08 ,  F15B2013/004 ,  F15B2211/205 ,  F15B2211/255 ,  F15B2211/3058 ,  F15B2211/327 ,  F15B2211/6346

    摘要： An object of the present invention is to solve such problems associated with installing of a spool-type regenerative valve, in that an overall installation space of a hydraulic valve increases and processing that requires accuracy becomes complex. A regenerative circuit includes: a regenerative oil path provided in a valve body of a direction switching valve so as to connect a supply oil path connected to one side of a hydraulic actuator and a discharge oil path connected to the other side; and a regenerative valve which is a poppet-type flow regulating valve that is screwed into and attached to the valve body so as to control the flow of oil in the regenerative oil path according to an operation state of the direction switching valve.

    摘要翻译： 本发明的目的是解决与安装卷轴式再生阀相关的问题，因为液压阀的整体安装空间增大，需要精度的处理变得复杂。 再生回路包括：再生油路，设置在方向切换阀的阀体中，以连接与液压致动器的一侧连接的供油路和与另一侧连接的排出油路; 以及再生阀，其是螺旋式安装在阀体上的提升式流量调节阀，以根据方向切换阀的运转状态来控制再生油路中的油流。

    DEVICE AND METHOD FOR CONTROLLING FLOW RATE IN CONSTRUCTION MACHINERY
    6.
    发明申请
    DEVICE AND METHOD FOR CONTROLLING FLOW RATE IN CONSTRUCTION MACHINERY 有权
    用于控制建筑机械流量的装置和方法

    公开(公告)号：US20150322648A1

    公开(公告)日：2015-11-12

    申请号：US14762287

    申请日：2013-01-24

    申请人： VOLVO CONSTRUCTION EQUIPMENT AB

    发明人： Chun-Han LEE

    IPC分类号： E02F9/22 ,  F15B13/044 ,  F15B11/16 ,  E02F3/43 ,  F15B11/024

    CPC分类号： E02F9/2203 ,  E02F3/436 ,  E02F9/2228 ,  E02F9/2235 ,  E02F9/2296 ,  F15B11/024 ,  F15B11/161 ,  F15B13/044 ,  F15B2211/20546 ,  F15B2211/3058 ,  F15B2211/428 ,  F15B2211/6346 ,  F15B2211/6652 ,  F15B2211/6654 ,  F15B2211/6658

    摘要： A flow control apparatus and a flow control method for a construction machine are disclosed, which can perform ground leveling work for smoothing the ground by the self weight of a boom without supplying hydraulic fluid from a hydraulic pump to a hydraulic cylinder. The flow control method for a construction machine including a hydraulic pump, a hydraulic actuator connected to the hydraulic pump, a control valve controlling a flow direction of hydraulic fluid supplied to the hydraulic actuator, a work mode switching valve installed in a flow path between the control valve and the hydraulic actuator to perform switching between a normal work mode and a floating mode, a detection means for detecting a boom-down operation amount of an operation lever operated by a user, an electronic proportional valve controlling a discharge flow rate of the hydraulic pump, and a controller, the flow control method including a first step of determining whether the present mode is switched to the floating mode; a second step of changing the discharge flow rate of the hydraulic pump corresponding to the boom-down operation amount detected by the detection means if the present mode is switched to the floating mode; and a third step of outputting an electrical control signal to the electronic proportional valve so that the hydraulic pump can discharge the hydraulic fluid at the changed flow rate corresponding to the boom-down operation amount.

    摘要翻译： 公开了一种用于施工机械的流量控制装置和流量控制方法，其可以执行用于通过悬臂的自重使地面平滑的地面平整工作，而不将液压流体从液压泵供给到液压缸。 一种用于建筑机械的流量控制方法，包括液压泵，连接到液压泵的液压致动器，控制供给液压致动器的液压流体的流动方向的控制阀，安装在液压泵的流路中的工作模式切换阀 控制阀和液压致动器，以在正常工作模式和浮动模式之间执行切换;检测装置，用于检测由用户操作的操作杆的动臂下降操作量;电子比例阀，其控制所述操作杆的排出流量; 液压泵和控制器，所述流量控制方法包括确定所述当前模式是否切换到所述浮动模式的第一步骤; 如果当前模式切换到浮动模式，则改变对应于由检测装置检测到的动臂下降操作量的液压泵的排出流量的第二步骤; 以及将电气控制信号输出到电子比例阀的第三步骤，使得液压泵能够以对应于动臂下降操作量的改变的流量排出液压流体。

    CONTROL ARCHITECTURE FOR PRIME MOVER STALL PREVENTION
    8.
    发明公开
    CONTROL ARCHITECTURE FOR PRIME MOVER STALL PREVENTION 审中-公开

    公开(公告)号：US20230167629A1

    公开(公告)日：2023-06-01

    申请号：US17997320

    申请日：2021-04-30

    申请人： Danfoss A/S

    发明人： Mahesh K JADHAV ,  Kedar RUGGE

    IPC分类号： E02F9/22 ,  F15B11/16

    CPC分类号： E02F9/2221 ,  F15B11/161

    摘要： A method for preventing prime mover stall for a work machine including a hydraulic system having a plurality of control valves served by a hydraulic pump. The method can include determining an actual required flow rate value for the plurality control valves and a total maximum flow rate to the plurality of control valves that will enable the prime mover to operate without stalling. The method can also include operating the plurality of control valves such that the combined total flow of the plurality control valves is at or below the total maximum flow rate such that the pump operates at a condition below which prime mover stall will occur. The method can also include setting a flow sharing allocated specific criteria in which the flow reduction takes place during a flow saturation condition for each of the plurality of control valves such that the total sum of the flow rates (calculated based on the criteria) is equal to or less than the total maximum flow rate.

    Multi-Hydraulic Control Circuit
    9.
    发明申请
    Multi-Hydraulic Control Circuit 审中-公开

    公开(公告)号：US20180100521A1

    公开(公告)日：2018-04-12

    申请号：US15728136

    申请日：2017-10-09

    申请人： Robert Bosch GmbH

    发明人： Emmanuel Richer

    IPC分类号： F15B11/16 ,  F15B13/02 ,  F15B13/06

    CPC分类号： F15B11/161 ,  F15B13/026 ,  F15B13/0417 ,  F15B13/06 ,  F15B2211/2053 ,  F15B2211/30555 ,  F15B2211/654 ,  F15B2211/71

    摘要： A multi-control hydraulic circuit supplies receivers with hydraulic fluid delivered by a pump with an output controlled by the pressure of a control line depending on a load pressure of the receivers, and delivers the hydraulic fluid at a regulated pressure. The hydraulic circuit consists of hydraulic modules each associated with a receiver having a distributor which regulates the variable output supplying the receiver via a pressure compensator connected at its inlet to the outlet of the variable choke of the distributor, and at its outlet. The plunger manages the connection between its inlet and its outlet. The pressure compensator has a fluid link equipped with a choke and connects the outlet to the control line, irrespective of the position of the plunger.