专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

51. 发明申请

US20180231119A1 Hydrostatic Transmission and Method for Braking Using the Same 审中-公开
公开(公告)号：US20180231119A1
公开(公告)日：2018-08-16
申请号：US15894769
申请日：2018-02-12
申请人： Robert Bosch GmbH
发明人： Heiko Witte , Martin Behm
IPC分类号： F16H61/4157 , F16H39/10 , F16H61/4017 , F16H61/46 , F16H61/425 , F16H61/435 , F16H61/438
CPC分类号： F16H61/4157 , F16H39/10 , F16H59/18 , F16H59/44 , F16H59/68 , F16H61/4017 , F16H61/425 , F16H61/435 , F16H61/438 , F16H61/46 , F16H2059/366 , F16H2059/6876
摘要： A hydrostatic transmission for a traction drive of a mobile working machine includes a variable-displacement pump and one or more motors connected to one another in a closed hydraulic circuit. An electronic control unit of the hydrostatic transmission is configured to initiate and to end a braking operation by the hydrostatic transmission if a traveling speed of the mobile working machine reaches a threshold value. The threshold value is adjustable by the electronic control unit automatically or in a manner dependent on a driver demand. The braking torque is also adjustable.

52. 发明申请

US20180051784A1 Hydraulic Mechanical Transmission 审中-公开
公开(公告)号：US20180051784A1
公开(公告)日：2018-02-22
申请号：US15680957
申请日：2017-08-18
申请人： Eaton Corporation
发明人： QingHui Yuan
IPC分类号： F16H39/10 , F16H61/438 , F16H61/00
摘要： A hydraulic mechanical transmission includes a first hydraulic unit having a first shaft and a second hydraulic unit having a second shaft. The second hydraulic unit is connected in hydraulic fluid communication with the first hydraulic unit by high and low pressure lines. At least one of the first and second hydraulic units has variable displacement. A mechanical torque transfer arrangement transfers torque between the first shaft and the rotatable component of the second hydraulic unit. One of the first and second hydraulic units operates as a hydraulic pump and the other of the first and second hydraulic units operates as a hydraulic motor.

53. 发明授权

US08844279B2 Hydraulic fan circuit 有权
标题翻译：液压风机电路
公开(公告)号：US08844279B2
公开(公告)日：2014-09-30
申请号：US13149430
申请日：2011-05-31
申请人： Bryan E. Nelson , Jeremy T. Peterson
发明人： Bryan E. Nelson , Jeremy T. Peterson
IPC分类号： F16D31/02 , F16H61/4104 , F15B7/00 , F16H61/4026 , F01P7/04 , F16H61/438 , B60K25/02
CPC分类号： F16H61/4026 , B60K2025/026 , F01P7/044 , F15B7/005 , F15B7/008 , F15B2211/20523 , F15B2211/20546 , F15B2211/20569 , F15B2211/212 , F15B2211/613 , F15B2211/7058 , F16H61/4104 , F16H61/438
摘要： A hydraulic fan circuit includes a primary pump, a motor fluidly connected to the primary pump, and a fan operably connected to and driven by the motor. The circuit also includes a supply passage extending from the primary pump to the motor, a return passage extending from the motor to the primary pump, and a pressure limiting valve configured to selectively reduce pressure of a flow of pilot fluid directed to the primary pump. The circuit further includes an override valve configured to selectively connect the supply passage to the pressure limiting valve.
摘要翻译：液压风扇回路包括主泵，流体连接到主泵的马达和可操作地连接到马达并由马达驱动的风扇。电路还包括从主泵延伸到电动机的供应通道，从电动机延伸到主泵的返回通道，以及被配置为选择性地减小被引导到主泵的先导流体的流的压力的限压阀。电路还包括被配置为选择性地将供给通道连接到限压阀的超控阀。

54. 发明授权

US4212164A Variable delivery pump control system 失效
标题翻译：变送泵控制系统
公开(公告)号：US4212164A
公开(公告)日：1980-07-15
申请号：US966835
申请日：1978-12-06
申请人： John E. G. Young
发明人： John E. G. Young
IPC分类号： F16H61/42 , F16H61/438 , F16H61/46 , F04B49/00
CPC分类号： F16H61/46 , F16H61/438
摘要： A variable delivery pump has a pump control mechanism in a housing secured thereto for governing directional flow of fluid through the pump, the pump being adapted to be connected through a closed loop to a motor. A pressure compensating valve is provided in the housing for governing pressure output of the pump, and a pump control cylinder is provided for positioning a flow control cam of the pump in accordance with flow of fluid through the direction control valve and the pressure compensating valve. A cam plate is coaxially connected to a directional control rotatable valve spool of the direction control valve, the cam plate having an outer periphery that is continuously radially variable from a maximum radial point to a minimum radial point for either direction of rotation of the cam from the maximum radial point as the control spool is rotated in either direction from a normal position. The cam plate actuates a cam follower, which in turn actuates a slideable sleeve in the pressure compensating valve. A valve sleeve on the directional control valve is fixed against rotation. There is no feedback connection to the cam plate of the pump to either the direction control valve or the pressure compensating valve.
摘要翻译：可变输送泵在固定在其上的壳体中具有泵控制机构，用于控制通过泵的流体的定向流动，所述泵适于通过闭环连接到电动机。压力补偿阀设置在壳体中用于调节泵的压力输出，并且提供泵控制缸，用于根据流体通过方向控制阀和压力补偿阀的流动来定位泵的流量控制凸轮。凸轮板与方向控制阀的方向控制旋转阀芯同轴连接，该凸轮板具有从最大径向点到最小径向点连续可径向变化的外周边，用于凸轮的任一方向的旋转当控制阀芯从正常位置沿任一方向旋转时的最大径向点。凸轮板驱动凸轮从动件，该凸轮从动件驱动压力补偿阀中的可滑动套筒。方向控制阀上的阀套固定不受旋转。没有与泵的凸轮板的反馈连接到方向控制阀或压力补偿阀。

55. 发明授权

US4067193A Combined hydrostatic transmission implement system 失效
标题翻译：组合静液压传动工具系统
公开(公告)号：US4067193A
公开(公告)日：1978-01-10
申请号：US743833
申请日：1976-11-22
申请人： William B. Norick
发明人： William B. Norick
IPC分类号： F15B11/16 , F16H61/42 , F16H61/438 , F16H39/46
CPC分类号： F15B11/16 , F16H61/42 , F16H61/438 , F15B2211/20538 , F15B2211/20553 , F15B2211/20584 , F15B2211/25 , F15B2211/3144 , F15B2211/355 , F15B2211/40515 , F15B2211/455 , F15B2211/50518 , F15B2211/5156 , F15B2211/5157 , F15B2211/55 , F15B2211/555 , F15B2211/6058 , F15B2211/62 , F15B2211/6355 , F15B2211/71
摘要： A hydraulic system is disclosed which combines hydrostatic and implement motors and includes a plurality of hydraulic motors with a variable displacement pump supplying fluid for the motors and a plurality of directional control valves for selectively directing fluid from the pump to the respective motors and includes pressure varying means connected to each of the directional control valves for varying a pilot pressure communicated to vary the displacement of the variable displacement pump in direct relationship to the shifting of the directional control valves.
摘要翻译：公开了一种液压系统，其结合了静液压和实施马达，并且包括多个液压马达，其具有为马达提供流体的可变排量泵和用于选择性地将泵从泵泵送到相应马达的多个方向控制阀，并且包括压力变化连接到每个方向控制阀的装置，用于改变连通的先导压力，以便与可变排量泵的位移直接关系到方向控制阀的移动。

56. 发明授权

US3800535A Hydrostatic transmission control system 失效
标题翻译：液压传动控制系统
公开(公告)号：US3800535A
公开(公告)日：1974-04-02
申请号：US3800535D
申请日：1973-02-07
申请人： EATON CORP
发明人： WARD H , HICKS E
IPC分类号： B62D11/04 , B62D11/18 , F16H61/42 , F16H61/438 , F16H39/46
CPC分类号： F16H61/42 , B62D11/183 , F16H61/438
摘要： An improved hydrostatic transmission control system includes a speed control valve which facilitates inching or creep control by effecting a relatively small change in the output speed of a hydrostatic transmission with each increment of movement of a control rod or member during low speed operation of a vehicle. During high speed operation of the vehicle, each increment of movement of the control rod results in a relatively large change in the output speed of the hydrostatic transmission. To obtain the different changes in hydrostatic transmission output speed with equal increments of movement of the control rod, the speed control valve includes a valve spool which is biased against movement relative to the control rod by springs having different spring rates or stiffnesses. During low speed operation of the vehicle, incremental movement of the control rod relative to the valve spool compresses a relatively weak spring to provide a small increase in the biasing force applied against the valve spool. However, during high speed operation of the vehicle, incremental movement of the control rod relative to the valve spool compresses only a relatively strong spring to provide a relatively large increase in the biasing force applied against the valve spool.
摘要翻译：改进的静液传动控制系统包括速度控制阀，其通过在车辆的低速操作期间通过控制杆或构件的每个增量的移动实现静液压传动的输出速度的相对较小的变化来促进微动或蠕变控制。在车辆的高速运行期间，控制杆的每次运动增加导致静液压传动的输出速度相对较大的变化。为了以相同的控制杆运动增量来获得静液传动输出速度的不同变化，速度控制阀包括一个阀芯，该阀芯通过具有不同弹簧刚度或弹性的弹簧相对于控制杆偏压运动。在车辆的低速操作期间，控制杆相对于阀芯的增量移动压缩相对较弱的弹簧，从而提供对阀芯施加的偏置力的小的增加。然而，在车辆的高速运行期间，控制杆相对于阀芯的增量运动仅压缩相对较强的弹簧，以提供施加在阀芯上的偏置力的相对大的增加。

57. 发明授权

US3700356A Fluid system 失效
标题翻译：流体系统
公开(公告)号：US3700356A
公开(公告)日：1972-10-24
申请号：US3700356D
申请日：1970-08-26
申请人： PHILIP A KUBIK
发明人： KUBIK PHILIP A
IPC分类号： F04B49/00 , F15B7/00 , F16H61/42 , F16H61/438 , F04B1/26
CPC分类号： F16H61/42 , F04B49/002 , F15B7/006 , F16H61/438
摘要： A fluid system having a variable displacement fluid pump connected in a closed loop circuit to a fluid cylinder having a piston and a pair of connecting rods extending from opposite sides of the piston externally of the fluid cylinder. A directional control valve disposed in the closed circuit between the inlet and outlet of the fluid pump is adapted to selectively direct fluid to one side of the piston within the fluid cylinder, while exhausting fluid from the other side of the piston, to selectively move the piston within the fluid cylinder. The rate of movement of the piston in either direction of movement is controlled by the amount of fluid displaced by the fluid pump. A second directional control valve is adapted to direct fluid from a second source of fluid to a pressure responsive displacement control mechanism to selectively vary the displacement of the fluid pump between a maximum and a minimum flow position. The rate of fluid flow to the pressure responsive displacement control mechanism is selectively varied to control the rate of displacement of the fluid pump and to thereby selectively control the rate of movement of the cylinder piston, while the maximum flow position may be varied between defined limits by an electrically operated remote control.
摘要翻译：一种具有可变排量流体泵的流体系统，该可变排量流体泵连接在具有活塞的流体缸的闭环回路中，以及从流体缸的外部的活塞的相对侧延伸的一对连接杆。设置在流体泵的入口和出口之间的闭合回路中的方向控制阀适于选择性地将流体引导到流体缸内的活塞的一侧，同时从活塞的另一侧排出流体，以选择性地移动活塞在液压缸内。活塞在两个运动方向的移动速度由流体泵移动的流体的量来控制。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式