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目前北方小型渔船几乎全部配备四轮式液压流网起网机,这种起网机具有拉力大,操作简便等优点,受到广大渔民的青睐。它由箱体、起重绞轮和导向轮组成,液压系统采用由齿轮油泵、摆线马达组成的定量系统,油泵由渔船主机前端轴带。根据流网作业特点,渔船起网时须顶风顶流作业,同时挂摆跟进。由于工况不同,主机转速很难稳定,这样就造成网机液压系统的油泵转速变化。
At present, almost all of the small fishing boats in the north are equipped with a four-wheel hydraulic net-netting machine. Such a net-netting machine has the advantages of large pulling force and simple operation, and is favored by the majority of fishermen. The utility model is composed of a box body, a lifting sheave and a guide wheel. The hydraulic system adopts a quantitative system composed of a gear oil pump and a cycloid motor, and the oil pump is arranged by a front axle of a fishing vessel host. According to the characteristics of flow network operations, the fishing vessel must top-wind operations at the time of loading the net and follow up. Due to different working conditions, the host speed is difficult to stabilize, thus causing the network hydraulic system pump speed changes.