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公开(公告)号:US20100303643A1
公开(公告)日:2010-12-02
申请号:US12438532
申请日:2007-07-19
IPC分类号: F04B49/00
CPC分类号: F15B11/165 , E02F9/2203 , E02F9/2228 , E02F9/2232 , E02F9/225 , E02F9/2296 , F01P7/044 , F15B11/05 , F15B11/168 , F15B2211/20523 , F15B2211/20553 , F15B2211/40553 , F15B2211/6054 , F15B2211/6343 , F15B2211/654 , F15B2211/7058
摘要: A fan drive system for driving an engine cooling fan mounted in a working machine is described. The fan drive system includes a variable displacement pump that supplies oil to an actuator and is also used as a hydraulic pump for the hydraulic motor that drives the cooling fan. A pump displacement of a variable displacement pump can be controlled in accordance with the load of the working machine, and when a load is not generated in the working machine, the pump displacement of the variable displacement pump can be controlled in accordance with a load pressure of a hydraulic motor which drives a cooling fan. Examples of such working machines include a forklift, a skid steer loader (SSL) and a crawler dump.
摘要翻译: 描述了用于驱动安装在工作机中的发动机冷却风扇的风扇驱动系统。 风扇驱动系统包括可变排量泵,其向致动器供油,并且还用作用于驱动冷却风扇的液压马达的液压泵。 可以根据作业机械的负载来控制可变排量泵的泵排量,并且当在工作机械中不产生负载时,可以根据负载压力来控制可变排量泵的泵排量 驱动冷却风扇的液压马达。 这种工作机器的示例包括叉车,滑移装载机(SSL)和履带式倾卸装置。