高速齿轮泵渐开线型卸荷槽的设计与分析

李玉龙; 孙付春; 唐茂

doi:10.13433/j.cnki.1003-8728.2014.0920

高速齿轮泵渐开线型卸荷槽的设计与分析

doi: 10.13433/j.cnki.1003-8728.2014.0920

1.
成都大学工业制造学院, 成都 610106

基金项目:

成都大学人才引进项目(20804)资助

详细信息

作者简介:
李玉龙(1968-)，教授，博士，研究方向为齿轮泵理论及现代设计方法，leo-world@163.com

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出版历程
- 收稿日期: 2013-09-17

Design and Analysis of the Relief Groove with Involutes Shape in the Higher Speed External Gear Pumps

1.
Industrial Manufacturing College, Chengdu University, Chengdu 610106

摘要

摘要: 因外啮合齿轮泵高速化下的困油卸荷需要,提出能够实现卸荷面积最大化且形状与齿廓一致的卸荷槽新的渐开线型式。针对现有的矩形卸荷槽型式,以小侧隙为例,通过所建立且被验证的困油模型,就困油压力峰值和困油本身的有效利用率两指标,进行渐开线型式和矩形型式下的仿真运算与分析比较。结果表明:案例参数下,渐开线型卸荷槽下的卸荷面积是矩形下的1.19~31.59倍;能极大地降低困油压力峰值和缓解困油现象,且提高了困油本身的有效利用率和泵的容积效率等。得出渐开线卸荷槽能够满足泵高速化下困油的卸荷需要。
- 齿轮泵 /
- 困油 /
- 卸荷槽 /
- 模型 /
- 泄漏量
Abstract: For the need to release trapped oil pressure in the higher speed external gear pumps with involutes gear pairs,a new involutes profile was proposed for the design of relief groove,the profile was consistent with the tooth profile of involute gear,and it could achieve maximum relief area. Based on the two different relief groove types of involutes shape and rectangle shape; and the small backlash value as an example,form the trapped oil model established and validated in the early literature,the two technical indicators of both the maximum peak of trapped oil pressure and the utilization efficiency of trapped oil volume were derived and simulated,finally,all of the simulation results were compared and analyzed with each other. The results indicated that the relief area value with the relief groove of involute shape under the example parameters was from 1. 19 to 31. 59 times as large as the relief area value with the relief groove of rectangle shape; which could greatly reduce the peak of trapped oil pressure,so the phenomenon of trapped oil was alleviated,meanwhile,the utilization efficiency of trapped oil volume and the volumetric efficiency of the pump were improved, the relief effect was good. The important conclusion is summarized that the relief groove with involutes shape is able to meet the relief needs of trapped oil in the higher speed external gear pumps.
- angular velocity /
- computer simulation /
- design /
- flow rate /
- flowgear pumps

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参考文献(12)

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