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公开(公告)号：US08955472B2
公开(公告)日：2015-02-17
申请号：US12595285
申请日：2008-05-19
CPC分类号： E02F9/2025 , F01P7/044 , F01P7/08 , F02D29/02 , F02D29/04
摘要： A work vehicle is provided with an engine, a traveling device driven by driving force from the engine to cause the work vehicle to travel, a first hydraulic pump driven by the driving force from the engine to discharge hydraulic oil, and a cooling device having a cooling fan driven by the hydraulic oil supplied by the first hydraulic pump to cool the engine, and a control unit. The control unit performs a normal cooling control in which an upper limit fan speed is determined based on an engine speed, and a cooling suppression control in which the upper limit fan speed determined based on the engine speed is suppressed to be less than the upper limit fan speed during the normal cooling control when a predetermined operation required to increase the engine speed is performed.
摘要翻译： 工作车辆设置有发动机，由发动机的驱动力驱动以使作业车辆行驶的行驶装置，由来自发动机的驱动力驱动以排出液压油的第一液压泵，以及具有 由第一液压泵供应的液压油驱动的冷却风扇以冷却发动机，以及控制单元。 控制单元进行基于发动机转速确定上限风扇速度的正常冷却控制，将根据发动机转速确定的上限风扇速度抑制在小于上限的冷却抑制控制 执行提高发动机转速所需的规定动作时的正常冷却控制时的风扇转速。
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公开(公告)号：US20100107996A1
公开(公告)日：2010-05-06
申请号：US12595285
申请日：2008-05-19
CPC分类号： E02F9/2025 , F01P7/044 , F01P7/08 , F02D29/02 , F02D29/04
摘要： A work vehicle is provided with an engine, a traveling device driven by driving force from the engine to cause the work vehicle to travel, a first hydraulic pump driven by the driving force from the engine to discharge hydraulic oil, and a cooling device having a cooling fan driven by the hydraulic oil supplied by the first hydraulic pump to cool the engine, and a control unit. The control unit performs a normal cooling control in which an upper limit fan speed is determined based on an engine speed, and a cooling suppression control in which the upper limit fan speed determined based on the engine speed is suppressed to be less than the upper limit fan speed during the normal cooling control when a predetermined operation required to increase the engine speed is performed.
摘要翻译： 工作车辆设置有发动机，由发动机的驱动力驱动以使作业车辆行驶的行驶装置，由来自发动机的驱动力驱动以排出液压油的第一液压泵，以及具有 由第一液压泵供应的液压油驱动的冷却风扇以冷却发动机，以及控制单元。 控制单元进行基于发动机转速确定上限风扇速度的正常冷却控制，将根据发动机转速确定的上限风扇速度抑制在小于上限的冷却抑制控制 执行提高发动机转速所需的规定动作时的正常冷却控制时的风扇转速。
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公开(公告)号：US08047121B2
公开(公告)日：2011-11-01
申请号：US12279912
申请日：2007-04-04
IPC分类号： F15B13/042
CPC分类号： E02F9/2228 , E02F3/844 , E02F9/2203 , E02F9/2285 , E02F9/2292 , F15B2211/3127 , F15B2211/6346 , F15B2211/7053 , F15B2211/7107
摘要： A tank 16 and a main hydraulic pump 17 are connected to head side actuator chambers 13 and rod side actuator chambers 14 of hydraulic actuators 12 via conduits 21, 22. A direction control valve 18 and a quick drop valve 36 are connected to the conduits 21, 22. A hydraulic circuit is provided with an electromagnetic switch valve 42, which switches the quick drop valve 36 from a non-quick drop position 37 to a quick drop position 38. When switching the direction control valve 18 from a neutral position 23 to a lowering operation position 25, if the manipulation speed of a manipulation lever 33 exceeds a criteria speed, an excitation signal is output from a control device 32 to an electromagnetic switch valve 42 to quickly drop a blade 11, and the quick drop valve 36 is switched from the non-quick drop position 37 to the quick drop position 38.
摘要翻译： 油箱16和主液压泵17通过管道21,22与液压致动器12的头侧致动器室13和杆侧致动器室14连接。方向控制阀18和快速下降阀36连接到管道21 液压回路设置有电磁切换阀42，其将快速下降阀36从非快速下降位置37切换到快速下降位置38.当将方向控制阀18从空档位置23切换到 降低操作位置25，如果操纵杆33的操纵速度超过标准速度，则将激励信号从控制装置32输出到电磁开关阀42，以迅速地降低叶片11，并且快速下降阀36为 从非快速下落位置37切换到快速下落位置38。
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公开(公告)号：US20090007772A1
公开(公告)日：2009-01-08
申请号：US12279912
申请日：2007-04-04
IPC分类号： F15B11/024 , E02F9/22
CPC分类号： E02F9/2228 , E02F3/844 , E02F9/2203 , E02F9/2285 , E02F9/2292 , F15B2211/3127 , F15B2211/6346 , F15B2211/7053 , F15B2211/7107
摘要： A tank 16 and a main hydraulic pump 17 are connected to head side actuator chambers 13 and rod side actuator chambers 14 of hydraulic actuators 12 via conduits 21, 22. A direction control valve 18 and a quick drop valve 36 are connected to the conduits 21, 22. A hydraulic circuit is provided with an electromagnetic switch valve 42, which switches the quick drop valve 36 from a non-quick drop position 37 to a quick drop position 38. When switching the direction control valve 18 from a neutral position 23 to a lowering operation position 25, if the manipulation speed of a manipulation lever 33 exceeds a criteria speed, an excitation signal is output from a control device 32 to an electromagnetic switch valve 42 to quickly drop a blade 11, and the quick drop valve 36 is switched from the non-quick drop position 37 to the quick drop position 38.
摘要翻译： 油箱16和主液压泵17通过管道21,22与液压致动器12的头侧致动器室13和杆侧致动器室14连接。方向控制阀18和快速下降阀36连接到管道21 液压回路设置有电磁切换阀42，其将快速下降阀36从非快速下降位置37切换到快速下降位置38.当将方向控制阀18从空档位置23切换到 降低操作位置25，如果操纵杆33的操纵速度超过标准速度，则将激励信号从控制装置32输出到电磁开关阀42，以迅速地降低叶片11，并且快速下降阀36为 从非快速下落位置37切换到快速下落位置38。
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公开(公告)号：US08662223B2
公开(公告)日：2014-03-04
申请号：US13514540
申请日：2011-09-20
IPC分类号： B60K11/00
CPC分类号： E02F9/2095 , B60K2025/026 , B60W2510/0233 , E02F3/7609 , F01P7/044 , F16H61/4165
摘要： A controller of a work vehicle sets the upper limit of a fan target rotational speed in accordance with an engine rotational speed. The controller reduces an upper limit of the fan target rotational speed further when a lock-up clutch is in an engaged state than when the lock-up clutch is in a released state.
摘要翻译： 作业车辆的控制器根据发动机转速来设定风扇目标转速的上限。 当锁止离合器处于接合状态时，与当锁止离合器处于释放状态时，控制器进一步降低了风扇目标转速的上限。
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6.发明授权公开(公告)号：US08616297B2
公开(公告)日：2013-12-31
申请号：US13392845
申请日：2011-09-07
IPC分类号： A01B63/16
CPC分类号： E02F9/20 , E02F3/7609 , E02F3/961 , E02F5/32 , E02F9/2004 , E02F9/22 , E02F9/26
摘要： A bulldozer includes a body, a drive unit, a ripper, an operating lever, a steering lever, and a controller. The ripper is attached to a rear part of the body and performs ripping work. The operating lever is for operating the ripper. The steering lever is for controlling a travel operation by the drive unit. The controller executes a first control of pulling the ripper up out of the ground and a second control of tilting back the ripper, when it is detected that the ripping work has been ended by operation of the operating lever and the steering lever.
摘要翻译： 推土机包括主体，驱动单元，松土机，操作杆，转向杆和控制器。 松土机附着在身体的后部，进行撕裂工作。 操作杆用于操作松土机。 转向杆用于控制驱动单元的行驶操作。 当检测到操作杆和转向杆的操作检测到撕裂作业已经结束时，控制器执行将松土机向上拉出地面的第一控制和使松土器倾斜的第二控制。
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公开(公告)号：US08437926B2
公开(公告)日：2013-05-07
申请号：US13634494
申请日：2012-01-06
IPC分类号： G06F19/00
CPC分类号： E02F9/2228 , E02F3/844 , E02F9/2296
摘要： A control device for automatically controlling a pitch angle of a blade includes a hydraulic oil amount calculation unit and an open ratio setting unit. The hydraulic oil amount calculation unit is configured to calculate an amount of hydraulic oil passing through a blade tilt cylinder valve. The open ratio setting unit is configured to cause the blade tilt cylinder valve to open at a predetermined open ratio when a request for the pitch angle to be changed has been received, to cause the blade tilt cylinder valve to close when the calculated amount of hydraulic oil has reached a predetermined amount of hydraulic oil required for the change of the tilt angle, and to cause the open ratio to be smaller than the predetermined open ratio while a request for a predetermined action necessitating that hydraulic oil be supplied from a main valve is being received.
摘要翻译： 用于自动控制叶片的俯仰角的控制装置包括液压油量计算单元和开度比设定单元。 液压油量计算单元构成为计算通过叶片倾斜缸阀的液压油量。 打开比率设定单元被配置为当已经接收到要改变的俯仰角的请求时使叶片倾斜缸阀以预定的开度比打开，以使得当计算出的液压量时，叶片倾斜缸阀关闭 油已达到改变倾斜角所需的预定量的液压油，并且使得打开比率小于预定打开比，同时需要从主阀供应液压油的预定动作的请求是 被收到
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公开(公告)号：US20130000930A1
公开(公告)日：2013-01-03
申请号：US13634494
申请日：2012-01-06
CPC分类号： E02F9/2228 , E02F3/844 , E02F9/2296
摘要： A control device for automatically controlling a pitch angle of a blade includes a hydraulic oil amount calculation unit and an open ratio setting unit. The hydraulic oil amount calculation unit is configured to calculate an amount of hydraulic oil passing through a blade tilt cylinder valve. The open ratio setting unit is configured to cause the blade tilt cylinder valve to open at a predetermined open ratio when a request for the pitch angle to be changed has been received, to cause the blade tilt cylinder valve to close when the calculated amount of hydraulic oil has reached a predetermined amount of hydraulic oil required for the change of the tilt angle, and to cause the open ratio to be smaller than the predetermined open ratio while a request for a predetermined action necessitating that hydraulic oil be supplied from a main valve is being received.
摘要翻译： 用于自动控制叶片的俯仰角的控制装置包括液压油量计算单元和开度比设定单元。 液压油量计算单元构成为计算通过叶片倾斜缸阀的液压油量。 打开比率设定单元被配置为当已经接收到要改变的俯仰角的请求时使叶片倾斜缸阀以预定的开度比打开，以使得当计算出的液压量时，叶片倾斜缸阀关闭 油已达到改变倾斜角所需的预定量的液压油，并且使得打开比率小于预定打开比，同时需要从主阀供应液压油的预定动作的请求是 被收到
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公开(公告)号：US20120267128A1
公开(公告)日：2012-10-25
申请号：US13392845
申请日：2011-09-07
CPC分类号： E02F9/20 , E02F3/7609 , E02F3/961 , E02F5/32 , E02F9/2004 , E02F9/22 , E02F9/26
摘要： A bulldozer includes a body, a drive unit, a ripper, an operating lever, a steering lever, and a controller. The ripper is attached to a rear part of the body and performs ripping work. The operating lever is for operating the ripper. The steering lever is for controlling a travel operation by the drive unit. The controller executes a first control of pulling the ripper up out of the ground and a second control of tilting back the ripper, when it is detected that the ripping work has been ended by operation of the operating lever and the steering lever.
摘要翻译： 推土机包括主体，驱动单元，松土机，操作杆，转向杆和控制器。 松土机附着在身体的后部，进行撕裂工作。 操作杆用于操作松土机。 转向杆用于控制由驱动单元进行的行驶操作。 当检测到操作杆和转向杆的操作检测到撕裂作业已经结束时，控制器执行将松土机向上拉出地面的第一控制和使松土器倾斜的第二控制。
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公开(公告)号：US20120241235A1
公开(公告)日：2012-09-27
申请号：US13514540
申请日：2011-09-20
CPC分类号： E02F9/2095 , B60K2025/026 , B60W2510/0233 , E02F3/7609 , F01P7/044 , F16H61/4165
摘要： A controller of a work vehicle sets the upper limit of a fan target rotational speed in accordance with an engine rotational speed. The controller reduces an upper limit of the fan target rotational speed further when a lock-up clutch is in an engaged state than when the lock-up clutch is in a released state.
摘要翻译： 作业车辆的控制器根据发动机转速来设定风扇目标转速的上限。 当锁止离合器处于接合状态时，与当锁止离合器处于释放状态时，控制器进一步降低了风扇目标转速的上限。
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