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齿轮泵毕业论文 PAGE PAGE 17 齿轮泵毕业论文 变量齿轮泵的设计 摘要 齿轮泵结构简单、成本低、自吸能力强、抗油液污染能力强，在液压系统中常用作动力装置，特别是在液压系统中应用更广泛。变量齿轮泵内有一对相互啮合的外齿轮，其中一个为轴向位置确定的外齿轮，另一个则为可沿轴向移动的外齿轮，可沿轴向移动。当调节轴与其它调节控制机构相联接以后就可以对泵的输送流量实行调节或执行自动控制。变量齿轮泵是一种恒压力型变量齿轮泵，主要用于液压机械变量供油和其它液状流体需变量调节或变量自动控制的泵类产品。由于它的结构简单，流量调节方便，使液压系统效率提高，节省能源，适用于在中、低压范围内取代市场上的变量叶片泵，或制成适用于需变量供给各种液状流体的专用变量泵，可在许多液压系统中代替定量齿轮泵，将在某些领域成为齿轮泵的换代产品。 关键词：齿轮泵,液压泵,外啮合,变量,流量调节 the design of Variable gear pump (2) Abstract Gear pump structure simple, cost low, self-absorption ability strong, anti-fat liquor pollution ability, often serves as the power unit in the hydraulic system, specially applies in the hydraulic system widely. In the variable gear pump has the external gear which a pair meshes mutually, for the axial position external gear, another for may be along the end motion external gear, be possible along the end motion. When the regulating shaft will join later with other regulating control organization to be possible to implement the adjustment or the execution automatic control to the pump transportation current capacity .The variable gear pump is one kind of constant pressure strength variable gear pump, mainly uses in the hydraulic pressure machine variable feed and other liquidity fluid needs the quantitative governing or the variable automatic control pump class product. Because its structure is simple, the flow control is convenient, will make the hydraulic system efficiency to enhance, saves the energy, is suitable in, in the low pressure scope substitutes for in the market the variable vane pump, or makes is suitable in needs the variable supplies each kind of liquidity fluid the special-purpose variable displacement pump, may replace the quota gear pump in many hydraulic systems, will become the gear pump in certain domains the update product. Key word: the gear pump, the hydraulic pump, outside meshes, variable, flow control 目录 TOC \o 1-3 \h \z \u 变量齿轮泵的设计（2） I 摘要 I the design of Variable gear pump (2) II Abstract II 目录