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1. 发明授权

US06990807B2 Auxiliary hydraulic drive system 有权
标题翻译：辅助液压驱动系统
公开(公告)号：US06990807B2
公开(公告)日：2006-01-31
申请号：US10731568
申请日：2003-12-09
申请人： Mark Bird , David Moorman , Gary Cochran
发明人： Mark Bird , David Moorman , Gary Cochran
IPC分类号： F16D31/02
CPC分类号： F15B11/17 , F15B2211/20576 , F15B2211/633 , F15B2211/6336 , F15B2211/6654
摘要： One preferred embodiment of the present invention, provides an auxiliary hydraulic drive system having a total hydraulic flow. The system includes a primary hydraulic pump operable to provide hydraulic flow for an implement, and a flow control valve in communication with the hydraulic flow. The flow control valve operates to allow an optimum flow rate and diverts the excess flow amount when the total hydraulic flow exceeds the optimum flow rate. A secondary hydraulic pump is selectively operable to provide additional hydraulic flow. A control system is operable to engage the secondary pump when the total hydraulic flow drops below a minimum flow level; and the control system operates to disengage the secondary pump when the total hydraulic flow exceeds a maximum flow level. In a further embodiment, the invention provides a control unit for a hydraulic system. The control unit includes a sensor to measure total hydraulic fluid flow in a system; and a controller coupled to the sensor. The controller is operable to initiate additional fluid flow in the system if the total fluid flow drops below a minimum; and, is operable to reduce the fluid flow in the system if the total fluid flow exceeds a maximum.
摘要翻译：本发明的一个优选实施例提供了具有总液压流量的辅助液压驱动系统。该系统包括可操作以提供用于工具的液压流的主液压泵和与液压流连通的流量控制阀。当总液压流超过最佳流速时，流量控制阀操作以允许最佳流量并转移过量流量。二次液压泵可选择性地操作以提供附加的液压流。当总液压流量低于最小流量时，控制系统可操作以接合次级泵; 并且当总液压流超过最大流量时，控制系统操作以使二次泵脱离。在另一个实施例中，本发明提供一种用于液压系统的控制单元。控制单元包括用于测量系统中总液压流体流量的传感器; 以及耦合到传感器的控制器。如果总流体流量低于最小值，则控制器可操作地启动系统中的附加流体流动; 并且如果总流体流量超过最大值，则可操作地减少系统中的流体流量。

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