双联齿轮泵设计+文献综述

摘要双联齿轮泵实际上就是把两个普通齿轮泵串联或并联起来，其中并联的齿轮泵共用一个输入轴，两个普通齿轮泵之间一般用细牙花键连接。本课题设计的双联齿轮泵是由两个外啮合齿轮泵并联而成，其与普通外啮合齿轮泵的工作原理一样。设计的过程主要是根据给定齿轮泵的压力和流量两个性能参数，计算出双联齿轮泵相互啮合的齿轮结构及参数，然后设计和齿轮装配相应的轴结构，完成整体的设计过程，并校核齿轮的强度和轴的强度。最终设计出合理的双联齿轮泵;同时详细分析了齿轮泵的泄漏现象和困油现象，通过采用机械密封的方式减少泄漏，开卸荷槽消除困油现象。21433
关键词双联齿轮泵泄漏现象困油现象机械密封卸荷槽
毕业论文设计说明书（论文）外文摘要
Title         Double gear pump design
Abstract
Double gear pump is actually the two ordinary gear pumps in series or in parallel. The gear pump connected in parallel is sharing the same input shaft. The two ordinary gear pump is generally connected with a fine tooth spline. Double gear pump designed in this project is composed of two parallel external gear pumps from. It works like the common external gear pump. External gear pump is common hydraulic component used in the hydraulic system. The advantage is simple structure, small size, light weight, easy maintenance and manufacture, inexpensive, reliable, self-absorption ability, not sensitive to oil pollution and so on. The disadvantage is that there is no leakage phenomenon, the phenomenon of trapped oil, gear radial hydraulic pressure imbalance and the limited of improve the working pressure is limited; flow pulsation large and high noise.The design is mainly based on the performance of a given design parameters to design a reasonable double gear pump. And detailed analysis the phenomenon of gear pump`s trapped oil and leaks oil. Using mechanical seals to reduce leakage, and open unloading tank to eliminate the phenomenon of trapped oil.
Keywords double gear pump leakage phenomenon of trapped oil mechanical seal: unloading tank.
目录

1 绪论    1
1．1 液压泵的概述    1
1．2 液压泵的性能参数    1
1．3 液压泵的分类    2
1．4 齿轮泵的工作原理    2
1．5 齿轮泵的国内外现状及发展    4
1．5.1 目前广泛应用的齿轮泵    4
1.5.2 齿轮泵的发展趋势    5
1．6 本章小结    5
2 双联齿轮泵的设计    5
2．1 双联齿轮泵的整体方案的设计思路    5
2．2 齿轮的设计    6
2.2.1 齿轮材料的选择    6
2.2.2 齿轮参数的确定    6
2.2.3 齿轮强度的校核    9
2．3 齿轮轴的设计    10
2.3.1 前泵主动齿轮轴的设计计算    10
2.3.2后泵主动齿轮轴的设计计算    13
2.3.3 从动齿轮轴的设计计算    14
2．4 进出油口的确定    15
2．5 标准件的选择    15
2．6 本章小结    16
3 双联齿轮泵的性能分析    17
3．1 双联齿轮泵的困油现象及其卸荷措施    17
3.1.1 困油现象    17
3.1.2 卸荷槽的设计    18 双联齿轮泵设计+文献综述:http://www.youerw.com/jixie/lunwen_13632.html