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1. 发明公开

US20240026648A1 WORKING MACHINE 审中-公开
公开(公告)号：US20240026648A1
公开(公告)日：2024-01-25
申请号：US18374772
申请日：2023-09-29
申请人： KUBOTA CORPORATION
发明人： Yuji FUKUDA , Kohei NAGAO , Hiroaki NAKAGAWA , Ryota HAMAMOTO
IPC分类号： E02F9/22 , F16H61/448 , F16H61/4157 , F16H61/444 , F16H61/421 , F16H61/02
CPC分类号： E02F9/2246 , E02F9/226 , E02F9/2253 , E02F9/2296 , F16H61/448 , F16H61/4157 , F16H61/444 , F16H61/421 , F16H61/0206
摘要： A working machine includes a prime mover, a traveling device, a traveling motor, a traveling pump, a circulation fluid passage, a traveling switching valve shiftable between a first state corresponding to a first speed of a hydraulic motor and a second state corresponding to a second speed of the hydraulic motor, a brake, an actuation valve configured to output the hydraulic pressure applied to the traveling pump, and change the hydraulic pressure output therefrom, and a controller configured or programmed to control the traveling switching valve, the brake and the actuation valve, and being capable of activating a first mode. The controller is configured or programmed to, when activating the first mode, shift the brake into a braking state, shift the traveling switching valve into the second state, and control the actuation valve so as to set the hydraulic pressure output from the actuation valve to a predetermined pressure.

2. 发明授权

US10806102B2 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.

3. 发明授权

US09850918B2 Hydraulic system for a working machine and a method for controlling a hydraulic system 有权
公开(公告)号：US09850918B2
公开(公告)日：2017-12-26
申请号：US14892510
申请日：2013-06-03
申请人： VOLVO CONSTRUCTION EQUIPMENT AB
发明人： Robert Morelius , Kim Heybroek
IPC分类号： F15B11/10 , F16H61/448 , E02F9/12 , E02F9/22 , B60K6/12 , F16H61/4035 , F16H61/4096 , F15B11/00 , E02F3/42 , E02F3/43
CPC分类号： F15B11/10 , B60K6/12 , E02F3/422 , E02F3/431 , E02F9/123 , E02F9/2217 , E02F9/2253 , E02F9/2289 , F15B11/003 , F15B11/006 , F15B2211/20523 , F15B2211/2053 , F15B2211/20569 , F15B2211/212 , F15B2211/30565 , F15B2211/30575 , F15B2211/7058 , F15B2211/7107 , F15B2211/76 , F15B2211/763 , F16H61/4035 , F16H61/4096 , F16H61/448 , Y02T10/6208
摘要： A hydraulic system includes a first and a second rotating hydraulic machine, the first and second hydraulic machine being arranged to provide a torque via a common output shaft; a first valve arrangement for providing a differential hydraulic pressure level over the first hydraulic machine by using two sources of hydraulic fluid having different hydraulic pressure levels, a second valve arrangement for providing a differential hydraulic pressure level over the second hydraulic machine by using two sources of hydraulic fluid having different hydraulic pressure levels; and a control unit configured to control the first valve arrangement and the second valve arrangement such that different discrete levels of torque are provided via the output shaft of the hydraulic system. A hydraulic system for providing different discrete levels of torque using one hydraulic machine and a plurality of differential pressure levels, and a method for controlling a hydraulic system, are also provided.

4. 发明授权

US4495766A Controls for hydrostatic systems 失效
标题翻译：静水系统控制
公开(公告)号：US4495766A
公开(公告)日：1985-01-29
申请号：US325032
申请日：1981-11-24
申请人： Alfred Krusche
发明人： Alfred Krusche
IPC分类号： F04B49/08 , F16H61/40 , F16H61/448 , F16H61/46 , F16H61/465 , F16D33/00 , F16D33/02
CPC分类号： F16H61/465 , F04B49/08 , F16H61/40 , F16H61/448 , F04B2205/061
摘要： In a control for a hydrostatic drive system with a primary energy source and with an adjustable pump and at least one adjustable consumer of hydrostatic energy and with a pump adjusting piston connected with the adjusting element of the pump and capable of sliding in a pump adjustment cylinder, where the load on the pump adjustment cylinder is regulated by means of a servo control valve, also with a constant pump connected to the drive shaft of the pump, the delivery line of which leads to a restrictor and to which a signal-pressure line is connected in front of the restrictor, where the pressure-signal present in it regulates a relief valve jet, which in turn is located in a control-signal line, the improvement characterized in that an additional restrictor is located in the control-signal line and means are provided for switching the pressure gradient in it to the servo control valve.
摘要翻译：在具有一次能量源和可调节泵的静液压驱动系统的控制中，以及至少一个可调静态能量的可调节消耗者，以及泵调节活塞与泵的调节元件连接并能够在泵调节缸中滑动其中泵调节气缸上的负载通过伺服控制阀进行调节，伺服控制阀还具有连接到泵的驱动轴的恒定泵，其输送管线通向限流器，并且信号压力线连接在节流器的前面，其中存在的限制器中的压力信号调节安全阀喷嘴，安全阀喷射器又位于控制信号线中，其改进之处在于控制信号线并且提供用于将其中的压力梯度切换到伺服控制阀的装置。

5. 发明授权

US3990235A Hybrid vehicle with hydrostatic transmission and hydropneumatic power reserve 失效
标题翻译：混合动力车具有静液压传动和液压动力储备
公开(公告)号：US3990235A
公开(公告)日：1976-11-09
申请号：US583540
申请日：1975-05-29
申请人： Pierre Bauchet
发明人： Pierre Bauchet
IPC分类号： B60K6/12 , B60T1/10 , F16H61/4096 , F16H61/448 , F15B1/02 , F15B11/16 , F16H39/46
CPC分类号： F16H61/4096 , B60K6/12 , B60T1/10 , F16H61/448 , Y02T10/6208
摘要： The invention relates to a hybrid vehicle of the hydrostatic transmission type comprising a main driving engine, a hydraulic, variable volumetric capacity pump driven from said main engine, a hydraulic motor and a hydropneumatic power accumulator mounted in a delivery conduit of said pump. Said vehicle further comprises an auxiliary hydraulic motor hydraulically mounted in parallel relationship to said first hydraulic motor and having a common output shaft therewith, the volumetric capacity of said auxiliary motor being equal to one fraction of the volumetric capacity of said first hydraulic motor.
摘要翻译：本发明涉及一种静液压传动型混合动力车辆，其包括主驱动发动机，从所述主发动机驱动的液压可变容积泵，液压马达和安装在所述泵的输送管道中的液压动力蓄能器。所述车辆还包括与所述第一液压马达液压安装的辅助液压马达，并具有与其相同的共同输出轴，所述辅助马达的容积等于所述第一液压马达的体积容积的一部分。

6. 发明授权

US3635022A Controllable condition rotary drive system 失效
标题翻译：可控状态旋转驱动系统
公开(公告)号：US3635022A
公开(公告)日：1972-01-18
申请号：US3635022D
申请日：1970-09-18
申请人： BENDIX CORP
发明人： LEWIS RICHARD J
IPC分类号： F15B13/06 , F16H61/40 , F16H61/448 , F15B11/16
CPC分类号： F16H61/448 , F15B13/06 , F16H61/40
摘要： A system comprising a pair of reversible hydraulic motors driving a common rotary output shaft such as a machine tool drive lead screw or the like. A control system consisting of a hydraulic transfer valve for selectively coupling the hydraulic motors in either a series or parallel drive arrangement to selectively obtain high-torque low-speed or low-torque, highspeed mode of operation during either forward or reverse drive conditions. An actuator for the transfer valve and a flowreversing valve both adapted to be separately responsive to electrical digital-type signals of the type generated by numerical machine tool computer control systems.
摘要翻译：一种系统，包括一对驱动公共的旋转输出轴的可逆式液压马达，例如机床驱动丝杆等。一种由液压转换阀组成的控制系统，用于以串联或并联驱动装置选择性地联接液压马达，以在前进或后退驱动条件期间选择性地获得高转矩低速或低扭矩高速运行模式。用于转换阀的致动器和流量反向阀都适于独立地响应于由数值机床计算机控制系统产生的类型的电气数字式信号。

7. 发明授权

US3367105A Hydraulic apparatus 失效
公开(公告)号：US3367105A
公开(公告)日：1968-02-06
申请号：US46120765
申请日：1965-06-03
申请人： DOWTY TECHNICAL DEV LTD
发明人： DOWTY GEORGE H
IPC分类号： B60K17/10 , F16H39/08 , F16H47/02 , F16H61/42 , F16H61/448
CPC分类号： F16H61/448 , B60K17/10 , F16H39/08 , F16H47/02 , F16H61/42 , F16H2039/005 , Y10S60/916 , Y10T74/19019

8. 发明授权

US3161111A Two speed motors 失效
标题翻译：两速电机
公开(公告)号：US3161111A
公开(公告)日：1964-12-15
申请号：US25539463
申请日：1963-01-31
申请人： COMMERCIAL SHEARING
发明人： WILLIAMS ARTHUR J
IPC分类号： F03C2/00 , F04C14/00 , F16H61/44 , F16H61/448
CPC分类号： F16H61/448 , F03C2/00 , F04C14/00 , F16H61/44

9. 发明授权

US3068795A Hydraulic power system 失效
标题翻译：液压动力系统
公开(公告)号：US3068795A
公开(公告)日：1962-12-18
申请号：US61688156
申请日：1956-10-18
申请人： BORG WARNER
发明人： LAUCK JOHN A
IPC分类号： B60K17/10 , F16H61/44 , F16H61/448
CPC分类号： F16H61/448 , B60K17/10 , F16H61/44

10. 发明授权

US2616259A Hydraulic system, including multiple motors and controls therefor 失效
标题翻译：液压系统，包括多台电机及其控制装置
公开(公告)号：US2616259A
公开(公告)日：1952-11-04
申请号：US76105247
申请日：1947-07-15
申请人： GEROTOR MAY CORP
发明人： QUINTILIAN BARTHOLOMEW F
IPC分类号： F16H61/44 , F16H61/448
CPC分类号： F16H61/448 , F16H61/44 , Y10T137/7774

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