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75 条记录 (耗时 0.016 秒)

    Hydrostatic Traction Drive in an Open Circuit
    1.
    发明申请
    Hydrostatic Traction Drive in an Open Circuit 有权

    公开(公告)号：US20230008843A1

    公开(公告)日：2023-01-12

    申请号：US17810181

    申请日：2022-06-30

    申请人： Robert Bosch GmbH

    发明人： Peter Schmuttermair ,  Salih Tetik

    IPC分类号： F16H61/4148 ,  F16H61/4017 ,  F16H61/4157 ,  F16H61/452 ,  F16H61/433

    摘要： A hydrostatic traction drive includes a hydrostatic pump and a hydrostatic motor connected to each other in an open circuit. One of the pump and motor is pressure-regulated while the other is torque-controlled or regulated in terms of pivot angle. A braking mode is therefore possible in which the secondary-side braking torque can be adapted to the permissible primary-side supporting torque of a primary machine coupled to the pump. To further increase the braking power, even in a high rotational phase of the primary machine, the permissible drag torque thereof can be temporarily exceeded. To further increase the braking power and therefore to have high-performance braking during operation, further means for converting energy can be provided in order to adjust a secondary-side braking torque and a primary-side supporting torque independently of each other.

    Hydraulic drive for the feed rollers of a head of a complete timber harvester
    2.
    发明授权
    Hydraulic drive for the feed rollers of a head of a complete timber harvester 有权

    公开(公告)号：US10806102B2

    公开(公告)日：2020-10-20

    申请号：US15946571

    申请日：2018-04-05

    申请人： Robert Bosch GmbH

    发明人： Iain Edward

    IPC分类号： F16H61/444 ,  F16H61/448 ,  A01G23/083 ,  F16H61/4043 ,  F16H61/452 ,  A01G23/08

    摘要： A hydraulic drive for feed rollers of a head of a complete timber harvester includes two radial piston motors coupled for conjoint rotation to the feed rollers. One radial piston motor has only one displacement volume and the other radial piston motor has two displacement volumes, between which it is possible to switch. A tree trunk clamped between the feed rollers can thus be moved at two speeds. At the higher speed, pressure medium circulates under a control pressure in the second displacement volume of the switchable radial piston motor.

    Motor control system and method for agricultural spreader
    4.
    发明授权
    Motor control system and method for agricultural spreader 有权

    公开(公告)号：US09763384B2

    公开(公告)日：2017-09-19

    申请号：US13619341

    申请日：2012-09-14

    申请人： Charles Andrew Hessler

    发明人： Charles Andrew Hessler

    IPC分类号： A01D41/12 ,  A01D69/03 ,  F16H61/452 ,  A01D41/127

    CPC分类号： A01D41/1243 ,  A01D41/1274 ,  A01D69/03 ,  F16H61/452

    摘要： An agricultural spreader system includes a first motor, a second motor, and a valve system coupled to the first motor and to the second motor. The first motor is configured to be driven by a working fluid and to drive a first spreader disc in rotation. The second motor is configured to be driven by the working fluid and to drive a second spreader disc in rotation. The valve system is configured to transition between a series flow arrangement and a parallel flow arrangement. The series flow arrangement is configured to direct the working fluid to the second motor through the first motor. The parallel flow arrangement is configured to direct a first portion of the working fluid to the first motor, and to direct a second portion of the working fluid to the second motor.

    Speed change controller of running hydraulic motor
    5.
    发明授权
    Speed change controller of running hydraulic motor 失效
    运行液压马达变速控制器

    公开(公告)号：US5323611A

    公开(公告)日：1994-06-28

    申请号：US838232

    申请日：1992-03-23

    申请人： Nobukazu Kotake

    发明人： Nobukazu Kotake

    IPC分类号： E02F9/22 ,  F15B11/02 ,  F16H61/4061 ,  F16H61/42 ,  F16H61/423 ,  F16H61/452 ,  F16H61/46 ,  F16H61/47 ,  F46D31/02

    CPC分类号： F16H61/452 ,  E02F9/2253 ,  E02F9/2296 ,  F16H61/423 ,  F16H61/46 ,  F16H61/47 ,  F16H61/4061

    摘要： The present invention relates to an apparatus for controlling the running speed of a hydraulic motor. A hydraulic motor employable for a construction machine such as a power shovel or the like as a driving power source is constructed such that its rotational speed can be changed to assume either a high speed (low torque) or a low speed (high torque) so as to cope with differences in the running state of the construction machine. The apparatus of the subject invention assures that the running state of the construction machine is determined by not only the running load of a hydraulic motor but also its rotational speed, whereby the construction machine can run smoothly at all times.

    摘要翻译： PCT No.PCT / JP89 / 00887 Sec。 371日期：1992年3月23日 102（e）1992年3月23日PCT PCT 1989年8月30日PCT公布。 出版物WO91 / 03651 1991年3月21日公开本发明涉及一种用于控制液压马达的运行速度的装置。 可用于诸如铲车等的施工机械的液压马达作为驱动动力源被构造成使得其转速可以改变为高速（低扭矩）或低速（高扭矩）等） 以应对施工机械运行状态的差异。 本发明的装置确保了施工机械的运行状态不仅由液压马达的运行负载而且决定其转速，从而施工机器可以始终平稳地运行。

    Belted crawler having auxiliary drive wheel
    6.
    发明授权
    Belted crawler having auxiliary drive wheel 失效
    带履带式履带带辅助驱动轮

    公开(公告)号：US4942934A

    公开(公告)日：1990-07-24

    申请号：US169528

    申请日：1988-03-17

    申请人： Kevin J. Moriarty

    发明人： Kevin J. Moriarty

    IPC分类号： B62D55/00 ,  B60K17/10 ,  B62D55/12 ,  F16H61/452 ,  F16H61/46 ,  F16H61/47

    CPC分类号： F16H61/47 ,  B62D55/12 ,  F16H61/452 ,  F16H61/46

    摘要： A crawler having a friction driven elastomeric belted track which is driven by rear mounted main drive wheels and front mounted auxiliary drive wheels. The auxiliary drive wheels are operatively coupled through hydraulic clutches to hydraulic motors that are fluidically coupled to a reversible variable displacement pump. An electronic controller controls the output of the pump so that the auxiliary drive wheels are driven at a speed less than the main drive wheels in the forward direction at a speed equal to or greater than the speed of the main drive wheels in the reverse direction. A valve assembly selectively couples and decouples the hydraulic clutches for engaging and disengaging the motor when turning the vehicle.

    摘要翻译： 具有摩擦驱动弹性带轨的履带，其由后安装的主驱动轮和前安装的辅助驱动轮驱动。 辅助驱动轮通过液压离合器可操作地连接到流体耦合到可逆排量泵的液压马达。 电子控制器控制泵的输出，使得辅助驱动轮以等于或大于主驱动轮在相反方向上的速度的速度沿向前方向以小于主驱动轮的速度被驱动。 阀组件选择性地联接和解耦液压离合器，用于在转动车辆时接合和分离马达。

    Hydrostatic propulsion system
    7.
    发明授权
    Hydrostatic propulsion system 失效
    静液压推进系统

    公开(公告)号：US3900075A

    公开(公告)日：1975-08-19

    申请号：US46083274

    申请日：1974-04-15

    申请人： CLARK EQUIPMENT CO

    发明人： CHICHESTER WILLARD L ,  HOLTKAMP DONALD A

    IPC分类号： B60K17/356 ,  F16H61/4148 ,  F16H61/44 ,  F16H61/452 ,  B60K17/10 ,  B62D11/04

    CPC分类号： F16H61/4148 ,  B60K17/356 ,  F16H61/44 ,  F16H61/452

    摘要： A hydrostatic transmission system for driving vehicle traction motors and wheels in both two and four wheel-drive in which may be selectively combined both closed and open loop circuits. The system includes engine speed control, circuit drive and control means which include a reversible variable displacement pump delivering pressure fluid selectively to drive motors at two or four traction wheels, and a fixed displacement pump combining its output with that of the variable displacement pump to effect a ''''high gear'''' wheel speed ratio in two-wheel drive as compared with ''''low gear'''' wheel speed ratio in four-wheel drive. The control means includes flow divider-combiner and valve means to proportion the total pump flow in four-wheel drive between front and rear pairs of wheels and also between the nondirigible wheels of one of said pairs of wheels for differentiating the speed of the latter wheels during vehicle turning, to enable a smooth transition betweeen two and four-wheel drive and vice versa under any driving condition, and to compatibly combine open and closed loop circuits in the same drive system.

    摘要翻译： 一种用于在两轮和四轮驱动中驱动车辆牵引电动机和车轮的静液压传动系统，其中可选择性地组合闭环回路和开环回路。 该系统包括发动机速度控制，电路驱动和控制装置，其包括可选择性地输送压力流体以驱动两个或四个牵引轮的电动机的可变容量泵，以及将其输出与可变排量泵的输出结合起来的固定排量泵 与四轮驱动中的“低档”轮速比相比，两轮驱动中的“高档”轮速比。 控制装置包括分流器组合器和阀装置，用于将四轮驱动中的总泵流量在前轮和后轮对之间以及在所述成对车轮之一之间的不透气轮之间成比例，以便使后轮的速度 在车辆转向期间，能够在任何行驶条件下实现两轮和四轮驱动之间的平滑过渡，反之亦然，并且在相同的驱动系统中兼容地组合开环和闭环回路。

    Control circuit for a pressurized fluid engine
    8.
    发明授权
    Control circuit for a pressurized fluid engine 失效
    加压流体发动机的控制回路

    公开(公告)号：US3895490A

    公开(公告)日：1975-07-22

    申请号：US44204374

    申请日：1974-02-13

    申请人： POCLAIN SA

    发明人： PACHINS JEAN G

    IPC分类号： F16H61/40 ,  F16H61/4148 ,  F16H61/452 ,  F16D31/02

    CPC分类号： F16H61/4148 ,  F16H61/40 ,  F16H61/452

    摘要： A control circuit for a pressurized fluid engine comprising a first main conduit and a second main conduit for connection to a fluid engine, means for connection to a main source of pressurized fluid, means for connection to a return for nonpressurized fluid, a supply selector having at least two positions, which, in its first position, connects the first conduit to the main source connection means and the second conduit to the fluid return connection means and, in its second position, blocks the first and second main conduits at its position, means for connection to a secondary source of fluid, a secondary conduit connecting the secondary source connection means to the first main conduit, a non-return valve in the secondary conduit permitting passage of fluid from the secondary source connection means to the first main conduit, a distributor having two positions, arranged in the first and second main conduits, defining two separate portions of each of the main conduits and which, in its first position, places the two portions of each of the main conduits in communication and, in its second position, isolates the two portions of the respective main conduits from each other, a connection conduit which, in the second position of the distributor, connects those portions of the first and second main conduits to be connected to the engine, a discharge conduit which connects the connection conduit to nonreturn connection means, a main restriction in the discharge conduit, and a secondary restriction in the portion of the connection conduit between the union of the connection conduit to the first main conduit and to the discharge conduit.

    摘要翻译： 一种用于加压流体发动机的控制电路，包括用于连接到流体发动机的第一主管道和第二主管道，用于连接到主加压流体源的装置，用于连接到非加压流体的回路的装置， 选择器具有至少两个位置，其在其第一位置中将第一管道连接到主源连接装置，将第二管道连接到流体返回连接装置，并且在其第二位置中将第一和第二主管道阻塞在其 位置，用于连接到二次流体源的装置，将次级源连接装置连接到第一主管道的次级管道，次级管道中的止回阀，允许流体从次级源连接装置通到第一主体 导管，具有布置在第一和第二主导管中的具有两个位置的分配器，限定每个主导管的两个分开的部分， 其第一位置使每个主管道的两个部分连通，并且在其第二位置将相应主管道的两个部分彼此隔离，在分配器的第二位置连接的连接管道 要连接到发动机的第一和第二主管道的那些部分，将连接管道连接到不返回连接装置的排放管道，排放管道中的主要限制，以及连接管道部分中的次级限制 在连接管道与第一主管道的联接和排放管道之间。