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1. 发明授权

US11408505B2 Work vehicle 有权
公开(公告)号：US11408505B2
公开(公告)日：2022-08-09
申请号：US17306255
申请日：2021-05-03
申请人： YANMAR POWER TECHNOLOGY CO., LTD.
发明人： Taihei Daiyakuji , Hitoshi Nomura
IPC分类号： F16H61/438 , F16H61/435 , F16H61/439 , F16H47/02 , F16H61/425
摘要： A work vehicle such as a tractor including an engine, a battery, a hydraulic continuously variable transmission, and an electric cylinder, and a power transmission mechanism. The hydraulic continuously variable transmission changes an output of the engine, and changes an angle of a movable swash plate to change a gear ratio thereof. The electric cylinder is driven by electric power supplied from the battery at least while the engine is stopped. With the power generated in the electric cylinder and transmitted, the power transmission mechanism changes the angle of the movable swash plate of the hydraulic continuously variable transmission.

2. 发明申请

US20210254710A1 WORK VEHICLE 有权
公开(公告)号：US20210254710A1
公开(公告)日：2021-08-19
申请号：US17306255
申请日：2021-05-03
申请人： YANMAR POWER TECHNOLOGY CO., LTD.
发明人： Taihei DAIYAKUJI , Hitoshi NOMURA
IPC分类号： F16H61/438 , F16H61/435 , F16H61/439 , F16H47/02 , F16H61/425
摘要： A work vehicle such as a tractor including an engine, a battery, a hydraulic continuously variable transmission, and an electric cylinder, and a power transmission mechanism. The hydraulic continuously variable transmission changes an output of the engine, and changes an angle of a movable swash plate to change a gear ratio thereof. The electric cylinder is driven by electric power supplied from the battery at least while the engine is stopped. With the power generated in the electric cylinder and transmitted, the power transmission mechanism changes the angle of the movable swash plate of the hydraulic continuously variable transmission.

3. 发明授权

US10753469B2 Hydrostatic transmission and method for braking using the same 有权
公开(公告)号：US10753469B2
公开(公告)日：2020-08-25
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 , F16H61/4017 , F16H39/10 , F16H61/46 , F16H61/425 , F16H61/438 , F16H61/435 , F16H59/18 , F16H59/44 , F16H59/36 , F16H59/68
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.

4. 发明授权

US10612652B1 Return to neutral mechanism for variable drive apparatus 有权
公开(公告)号：US10612652B1
公开(公告)日：2020-04-07
申请号：US15076974
申请日：2016-03-22
申请人： Hydro-Gear Limited Partnership
发明人： Austin J. Templin
IPC分类号： F16H61/439 , F16H61/438 , F04B1/26
CPC分类号： F16H61/439 , F04B1/26 , F16H61/438
摘要： A return to neutral (RTN) mechanism for a variable drive apparatus having a rotatable control shaft is provided. The RTN mechanism incorporates a neutral lockdown plate secured to the housing of the variable drive apparatus and disposed about the rotatable control shaft, a control arm fixed to the control shaft to impart rotation thereto, a single, rotatable return arm piloted upon a protective cover, and a pair of springs to bias the control shaft back to a neutral position from either a forward or reverse rotation.

5. 发明申请

US20180051803A1 Hydraulic Mechanical Transmission with Increased Efficiency 审中-公开
公开(公告)号：US20180051803A1
公开(公告)日：2018-02-22
申请号：US15680805
申请日：2017-08-18
申请人： Eaton Corporation
发明人： QingHui Yuan , Matthew E. Creswick
IPC分类号： F16H61/438 , F16H61/00 , F16H39/10 , F16H47/04 , F16H47/07
CPC分类号： F16H61/438 , F16H39/10 , F16H39/12 , F16H47/02 , F16H47/04 , F16H47/07 , F16H61/0009 , F16H61/0025 , F16H2037/0866 , F16H2039/105 , F16H2047/045
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. A mechanical torque transfer arrangement transfers torque between the first shaft of the first hydraulic unit and a rotatable housing of the second hydraulic unit. One of the first and second hydraulic units operates as a hydraulic pump and the other operates as a hydraulic motor, and both of the first and second hydraulic units have variable displacement.

6. 发明授权

US5503534A Automotive drive control for hydrostatic transmission 失效
标题翻译：用于静液压传动的汽车驱动控制
公开(公告)号：US5503534A
公开(公告)日：1996-04-02
申请号：US405130
申请日：1995-03-16
申请人： Karl-Thomas Rhody
发明人： Karl-Thomas Rhody
IPC分类号： F04B49/08 , F16H61/42 , F16H61/433 , F16H61/438 , F16H61/46 , F16H61/465 , F04B1/26
CPC分类号： F16H61/465 , F04B49/08 , F16H61/433 , F16H61/438 , F16H61/46 , F04B2205/062 , F04B2207/0441 , F16H2059/366
摘要： A control (27)is disclosed which may be used as an automotive drive control for a variable displacement hydrostatic pump (11). The pump displacement is controlled by servos (37, 39) by control pressure from a charge pump (21). As a pedal (P) of a vehicle engine (E) is depressed, an increasing pressure differential across a fixed orifice (79) moves a control spool (73) to port control fluid to a first servo port (A). If engine speed becomes excessive, or in response to an external pressure signal (121) representing another vehicle condition, the control spool (73) is moved to a position (FIG. 5 )in which control pressure is ported to a second servo port (B), thus positively reducing the displacement of the pump (11).
摘要翻译：公开了可用作可变排量静液压泵（11）的汽车驱动控制的控制器（27）。泵的位移由来自电荷泵（21）的控制压力由伺服（37,39）控制。当车辆发动机（E）的踏板（P）被压下时，跨越固定孔（79）的增加的压力差将控制阀芯（73）移动到端口控制流体到第一伺服端口（A）。如果发动机转速过大或响应于表示其他车辆状态的外部压力信号（121），则控制阀芯73移动到控制压力被移动到第二伺服端口的位置（图5） B），从而积极地减小泵（11）的位移。

7. 发明授权

US3691863A Control for hydrostatic transmission 失效
标题翻译：控制水文传输
公开(公告)号：US3691863A
公开(公告)日：1972-09-19
申请号：US3691863D
申请日：1971-04-28
申请人： TOWMOTOR CORP
发明人： SHAFFER WALTER M
IPC分类号： B60K26/00 , F16H61/42 , F16H61/437 , F16H61/438 , G05G11/00 , G05G9/00
CPC分类号： B60K26/00 , F16H61/42 , F16H61/437 , F16H61/438 , G05G11/00 , Y10T74/20189 , Y10T477/68
摘要： A control arrangement particularly for the hydrostatic transmission of a lift truck or the like to provide direction control, pump displacement control, throttle control, as well as special displacement control such as inching or creeping with high engine speeds as are required for lifting, etc. The arrangement includes a reciprocably movable pump displacement control rod coupled to a transmission control lever rotatable from a neutral position to forward and reverse pump displacement positions responsive to translation of the rod in opposite directions. Forward and reverse control linkage means are coupled to the rod by means of spring loaded sliders preloaded to a force above that required for the rod to move the transmission control lever through its full travel in both the forward and reverse directions in response to reciprocal rod movement effected by the control linkage means. A throttle control linkage is operably associated with the forward and reverse control linkage means to open the throttle in accordance with the extent of actuation of the latter control linkage means in either the forward or reverse direction. In addition, override control linkage means are coupled to the rod to override the loading force of the sliders and cause the rod to move the transmission control lever towards its neutral position irrespective of actuation of the forward and reverse control linkage means.
摘要翻译：特别是用于提升车辆等的静液压传动的控制装置，以提供方向控制，泵排量控制，节气门控制，以及特殊的位移控制，例如起重等等的高发动机转速的微动或爬行等。该装置包括可往复移动的泵排量控制杆，其联接到可从中立位置旋转的变速器控制杆，并且响应于杆在相反方向的平移而向前和向后反向泵位移位置。前进和后退控制联动装置通过弹簧加载的滑块联接到杆上，弹簧加载的滑块预先加载到杆所需的力以响应于往复杆运动而使传动控制杆沿前后方向的全部行程移动由控制联动装置实现。节气门控制联动装置与前进和后退控制联动装置可操作地相关联，以根据后一个控制联动装置在正向或反向方向的致动程度来打开节气门。此外，超控控制联动装置联接到杆以超越滑块的加载力，并且使得杆将变速器控制杆移向其中立位置，而与前进和后退控制联动装置的致动无关。

8. 发明授权

US3212263A Hydrostatic transmission 失效
公开(公告)号：US3212263A
公开(公告)日：1965-10-19
申请号：US36225764
申请日：1964-04-24
申请人： SUNDSTRAND CORP
发明人： HANN MELVIN M
IPC分类号： F04B49/00 , F16H61/42 , F16H61/438 , F16H61/46
CPC分类号： F16H61/46 , F04B49/002 , F16H61/42 , F16H61/438

9. 发明授权

US11339873B2 Hydraulic mechanical transmission 有权
公开(公告)号：US11339873B2
公开(公告)日：2022-05-24
申请号：US16778650
申请日：2020-01-31
申请人： DANFOSS POWER SOLUTIONS II TECHNOLOGY A/S
发明人： QingHui Yuan
IPC分类号： F16H61/438 , F16H47/04 , F16H61/00 , F16H39/10 , F16H47/07 , F16H47/02 , F16H39/12 , F16H37/08
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.

10. 发明授权

US11022215B2 Work vehicle 有权
公开(公告)号：US11022215B2
公开(公告)日：2021-06-01
申请号：US16746169
申请日：2020-01-17
申请人： YANMAR CO., LTD.
发明人： Taihei Daiyakuji , Hitoshi Nomura
IPC分类号： F16H61/438 , F16H61/435 , F16H61/439 , F16H47/02 , F16H61/425
摘要： A work vehicle such as a tractor including an engine, a battery, a hydraulic continuously variable transmission, and an electric cylinder, and a power transmission mechanism. The hydraulic continuously variable transmission changes an output of the engine, and changes an angle of a movable swash plate to change a gear ratio thereof. The electric cylinder is driven by electric power supplied from the battery at least while the engine is stopped. With the power generated in the electric cylinder and transmitted, the power transmission mechanism changes the angle of the movable swash plate of the hydraulic continuously variable transmission.

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