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公开(公告)号：US20120323451A1
公开(公告)日：2012-12-20
申请号：US13162280
申请日：2011-06-16
IPC分类号： F15B21/02
CPC分类号： E02F3/432 , E02F3/436 , E02F9/2296 , F15B21/087 , F15B2211/30575 , F15B2211/6336 , F15B2211/6346
摘要： A hydraulic system for lifting a work tool of a mobile machine is disclosed. The hydraulic system may have a pump, a lift actuator, a lift valve arrangement, and a lift sensor configured to generate a first signal indicative of an actual lift velocity. The hydraulic system may also have a tilt actuator, a tilt valve arrangement, and at least one operator interface device movable to generate a second signal indicative of a desired lift velocity and a third signal indicative of desired tilt velocity. The hydraulic system may further have a controller configured to command the lift valve arrangement to meter pressurized based on the second signal, command the tilt valve arrangement to meter pressurized fluid based on the third signal, and command the tilt valve arrangement to meter pressurized fluid and maintain a desired tilt angle of the work tool during lifting based selectively on the first and second signals.
摘要翻译： 公开了一种用于提升移动机器的工作工具的液压系统。 液压系统可以具有泵，升程致动器，升降阀装置和升力传感器，其构造成产生指示实际升力速度的第一信号。 液压系统还可以具有倾斜致动器，倾斜阀装置和至少一个操作器接口装置，其可移动以产生指示期望提升速度的第二信号和指示期望倾斜速度的第三信号。 液压系统还可以具有控制器，该控制器被配置为基于第二信号命令升压阀装置进行加压计量，指示倾斜阀装置基于第三信号计量加压流体，并且命令倾斜阀装置来计量加压流体， 在选择性地基于第一和第二信号提升期间保持作业工具的期望的倾斜角度。
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公开(公告)号：US20120321425A1
公开(公告)日：2012-12-20
申请号：US13162356
申请日：2011-06-16
CPC分类号： E02F3/432 , E02F3/436 , E02F9/2296 , F15B21/087 , F15B2211/30575 , F15B2211/6336 , F15B2211/6346
摘要： A hydraulic system is disclosed. The hydraulic system may have a pump, a lift actuator, a lift valve arrangement, a tilt actuator, a tilt valve arrangement, and a tilt angle sensor configured to generate a first signal. The hydraulic system may further have at least one operator interface device movable to generate a second signal indicative of a desired lift velocity and a third signal indicative of desired tilt velocity, and a controller. The controller may be configured to command the lift valve arrangement to meter pressurized fluid based on the second signal, command the tilt valve arrangement to meter pressurized fluid based on the third signal and, when the first signal indicates that the actual tilt angle has entered a specified range of tilt angles during lifting, command the tilt valve arrangement to meter pressurized fluid based on the second signal as the actual tilt angle remains within the specified range.
摘要翻译： 公开了一种液压系统。 液压系统可以具有泵，升降机执行器，升降阀装置，倾斜致动器，倾斜阀装置和配置成产生第一信号的倾斜角传感器。 液压系统还可以具有至少一个操作者接口装置，其可移动以产生指示期望升力速度的第二信号和指示期望倾斜速度的第三信号，以及控制器。 控制器可以被配置为命令提升阀装置基于第二信号来计量加压流体，命令倾斜阀装置基于第三信号计量加压流体，并且当第一信号指示实际倾斜角已经进入 在提升期间指定的倾斜角范围，指示倾斜阀装置基于第二信号计量加压流体，因为实际倾斜角度保持在指定范围内。
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