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齿轮泵由于结构简单、使用可靠、外形尺寸小和重量轻、制造容易、耐冲击、允许转速较高和使用方便等特点,在润滑系统和液压传动中得到广泛应用。近年来,对齿轮泵的结构和工艺进行了改进,如平衡齿轮泵的径向和轴向力,其径向间隙能自动补偿,对齿轮轴承,在轴孔内开油槽,改善滑动轴承的润滑和自动循环冷却等,从而提高压力、转速、效率和寿命。为了增加流量,采用了多个齿轮的串联或并联等方法。在此介绍图1所示的匀变量齿轮泵的结构。泵体上加工了两个平行的不等直径的通
Gear pump due to its simple structure, reliable use, small size and light weight, easy to manufacture, impact resistance, high speed and easy to use features such as lubrication systems and hydraulic transmission is widely used. In recent years, the gear pump structure and process improvements, such as balance gear pump radial and axial force, the radial clearance can be automatically compensated for gear bearings, the oil hole in the shaft hole to improve the lubrication of the sliding bearing And automatic cycle cooling, etc., thereby increasing pressure, speed, efficiency and life expectancy. In order to increase the flow, using a number of gear series or parallel method. Here, the configuration of the variable displacement gear pump shown in FIG. 1 will be described. Pump processed two parallel unequal diameter of the pass