| 1. | The following is the detail design of the pump , and a optimum mathematical model are presented to mostly reduce the helical gear pump flow pulse
在此基础上进行了斜齿齿轮泵的结构设计，通过建立斜齿齿轮泵齿轮的优化数学模型，优化计算出使输出流量脉动最小的斜齿轮参数，制造出斜齿齿轮泵样机。 |
| 2. | 2 . the flux characteristics of ordinary helical gear pump are lucubrated by theory for the first time , on this condition the selective qualification of the helical gear pump is gained
首次对普通斜齿齿轮泵流量特性进行了深入的理论研究，在此基础上研究了全齿廓啮合斜齿齿轮泵流量特性，首次得到了完全消除斜齿齿轮泵流量脉动的螺旋角的选择条件。 |
| 3. | And at last the measurement of helical gear pump flow pulse has been presented , which include how to measure the flow pulse and the validating the theory mentioned before and to try to the solve the problems happened during the process
根据齿轮泵流量脉动的检测要求，采用新的测试方法和手段，建立了中高压齿轮泵性能测试装置，并对样机进行了性能测试。 |
| 4. | On the condition the trapping characteristics of whole profile meshing helical pump are lucubrated by theory for the first time , and the select range of the helical angle that can eliminate completely the trapping of whole profile meshing helical gear pump is also obtained
在此基础上，首次对全齿廓啮合斜齿齿轮泵的困油特性进行了详细的理论研究，得到了完全消除全齿廓啮合斜齿齿轮泵困油冲击的螺旋角的选择范围。 |
| 5. | The researchful results indicate that the flux pulse ration of ordinary helical gear pump without clearance is less than that of the gear pump with clearence under the condition that the main parameters are same , and the flux pulse ration of ordinary helical gear pump is less than that of whole profile meshing helical gear pump
研究结果表明：在主要参数相同的情况下，普通斜齿齿轮泵无侧隙时流量脉动率小于有侧隙时的流量脉动率；全齿廓啮合斜齿轮泵比普通斜齿轮泵的流量脉动略小。 |
| 6. | 4 . based on the viscous hydrodynamics , the leakage characteristics of newton liquid that is transmitted by helical gear pump are researched for the aim of the least power loss , and the leakage model is founded , the mathematic models of the radial and the axial leakage are gained . at the same time the optimal radial leakage and axial leakage are got , and the numerical calculation is achieved
基于粘性流体力学，以功率损失最小为目标，首次对牛顿流体在斜齿齿轮泵中的漏流特性进行了研究，建立了泄漏模型，分别得到了斜齿齿轮泵的径向和轴向泄漏的数学计算模型；同时得到了斜齿齿轮泵最佳径向间隙和最佳轴向间隙，并在此基础上进行了数值计算。 |
| 7. | Based on the ostwald - de waele equation , the leakage characteristics of power - law transmitted by helical gear pump are researched , and the leakage model of power - law in the clearence is founded , and - the velocity distributing and the leakage capacity are worked out by the boundary condition . the power loss of leakage is got through the clearence leakage capacity , and the friction power loss is attained by the velocity distributing . the mathematic calculation model
利用幂律流体本构方程，首次对聚合物流体在斜齿齿轮泵中的漏流特性进行了研究，建立幂律流体在间隙中的泄漏模型，利用边界条件求出速度分布及泄漏量；由间隙泄漏量得到漏流损失功率，由速度分布得到流体摩擦功率损失，并得到间隙最优解的数值计算数学模型，同时给出实例及数值计算结果。 |
| 8. | 3 . the trapping characteristics of ordinary helical gear pump are lucubrated by theory for the first time , the theoretic relation of the gear rotor between the end overlap coefficient and trapping phenomenon is discussed respectively with clearence or without clearcence , and the relation of trapping volume with the rotational angle turn is also discussed . the selective range of the helical angle that can eliminate completely the trapping of helical gear pump is gained , which never appeared in literature before
首次对普通斜齿齿轮泵的困油特性进行深入的理论研究，分别讨论了有侧隙和无侧隙时普通斜齿齿轮泵转子的端面重合度与困油现象之间的理论关系，以及困油容积随转角的变化关系，得到了完全消除斜齿齿轮泵困油冲击的螺旋角机械科学研究院博士学位论文的选择范围。 |
| 9. | With the research in the paper succeeded it would be certain that the helical gear pump would replace the spur gear pump now widely existed in the market and also could replace the other type of hydraulic pump in some areas , which surely greatly decrease the cost of manufacture and advance the development of technology . the importance is undisputable
本论文研究的斜齿啮合式低脉动齿轮泵可代替现广泛存于市场上的直齿轮泵，并能在很大程度和范围内替代其它形式液压泵的作用，这对于促进机械装备的技术进步、降低机械装备的制造成本具有十分重要的意义，其应用前景将十分广阔。 |
| 10. | At first , on the base of the analysis of the mechanism of the helical gear pump , the paper try to find the relationship of the helical gear pump flow pulse with its corresponding parameters , give the solution of the problems brought by the replace of spur gear to lay the firm basis for the structural design of helical gear pump
本论文在对齿轮泵工作原理和流量脉动机理分析的基础上，首先探讨了斜齿齿轮泵的输出流量脉动与斜齿轮各结构参数之间的关系，以及由于斜齿轮替代直齿轮带来的相关问题并提出解决办法，为斜齿齿轮泵的结构设计奠定基础。 |
