Please wait a minute...
工程设计学报  2019, Vol. 26 Issue (1): 15-19,28    DOI: 10.3785/j.issn.1006-754X.2019.01.003
创新设计     
泵用齿轮副困油卸荷的H型侧隙结构研究
李玉龙1, 孙付春2
1. 宿迁学院 机电工程学院, 江苏 宿迁 223800;
2. 成都大学 机械工程学院, 四川 成都 610106
Research on H-shaped backlash structure on gear pairs for relief of trapped-oil in pumps
LI Yu-long1, SUN Fu-chun2
1. School of Mechanical and Electrical Engineering, Suqian College, Suqian 223800, China;
2. School of Mechanical Engineering, Chengdu University, Chengdu 610106, China
 全文: PDF(1277 KB)   HTML
摘要:

为满足齿侧间隙在外啮合齿轮泵传动性能和困油性能上的不同需要,提出了一种位于从动齿轮非工作面上的"大-小-大"H型侧隙结构。首先,通过对齿轮泵困油过程的分析,从双齿啮合区内两困油区的连通和单齿啮合区内困油性能的完善两方面出发,建立了连通用和卸荷用侧隙的面积计算公式;然后,根据所确定的最小侧隙面积,计算出H型侧隙结构的几何尺寸;最后,提出一种双微圆贯通型卸荷槽,实现双齿啮合区的困油卸荷。实例分析结果表明:无论侧隙大小如何变化,都不存在绝对连通和绝对卸荷,只有在一定许可压差下的相对连通和相对卸荷;即使侧隙连通区实现了真正的连通,该区内的困油问题仍没有得到解决,需辅以额外的卸荷槽加以卸荷;"大-小-大"H型侧隙结构,既满足了齿轮传动的性能要求,也极大地提高了泵的困油性能;齿轮齿槽根部的两端面圆形除料和双微圆对称贯通型卸荷槽能提供足够的卸荷面积。研究结果表明H型侧隙结构、齿槽根部的两端面圆形除料和双微圆对称贯通型卸荷槽的组合充分满足了齿轮传动性能和困油性能的要求,且具有结构简单、易加工等特点,为消除外啮合齿轮泵困油的危害提供了一种新的卸荷结构。

关键词: 齿轮泵连通侧隙卸荷侧隙H型侧隙侧隙面积困油性能卸荷槽    
Abstract:

In order to meet different requirements of backlash in gear transmission performance and trapped-oil performance of external gear pumps, an H-shaped backlash structure with large-small-large gap on the non-working surface of driven gear is put forward. Firstly, after analyzing the trapped-oil process of gear pumps, two kinds of area formulas necessary for connection and relief backlash were derived under the connection condition of two different trapped-oil volumes in double teeth meshed range and the relief condition of trapped-oil performance in single tooth meshed range. Secondly, through the derived minimum backlash area, the geometric size of the H-shaped backlash structure was calculated. Finally, a feed-through relief groove with asymmetric micro circular profile was invented for trapped-oil relief in double teeth meshed range. It was showed that whatever the backlash size was, the absolute connection and the absolute trapped-oil relief were not existed, but only the relative connection and relative relief under a certain permission pressure difference. Even if the connection was really satisfied in the backlash connection range, the trapped-oil phenomenon in this range was still not solved, and it must be unloaded by supplemented relief groove. On the premise of keeping transmission performance of gear pairs, the trapped-oil performance of pumps was greatly improved by the H-shaped backlash structure, combined with the circular material removal near the root circle on double gear end faces, larger relief area was built by the feed-through relief groove with double micro circular profiles symmetrical about pitch circle node. It is concluded that the combination of the H-shaped backlash structure and the circular material removal structure and the feed-through relief groove structure can fully meet the requirements of gear transmission performance and trapped-oil performance, and it has the characteristics of simple structure and easy processing. It provides a new relief structure for eliminating the hazards of trapped-oil in external meshing gear pump.

Key words: gear pump    connection backlash    relief backlash    H-shaped backlash    backlash area    trapped-oil performance    relief groove
收稿日期: 2018-04-02 出版日期: 2019-02-28
CLC:  TH325  
基金资助:

四川省教育厅自然科学重点资助项目(16ZA0382);北京卫星制造厂资助项目(20804)

通讯作者: 孙付春(1981-),男,江苏东台人,副教授,博士,从事农业机械设计与应用研究,E-mail:fch.sun@163.com,https://orcid.org/0000-0001-6787-6988     E-mail: fch.sun@163.com
作者简介: 李玉龙(1968-),男,江苏泰兴人,教授,博士,从事泵理论及现代设计方法研究,E-mail:leo-world@163.com,https://orcid.org/0000-0002-5609-6836
服务  
把本文推荐给朋友
加入引用管理器
E-mail Alert
RSS
作者相关文章  
李玉龙
孙付春

引用本文:

李玉龙, 孙付春. 泵用齿轮副困油卸荷的H型侧隙结构研究[J]. 工程设计学报, 2019, 26(1): 15-19,28.

LI Yu-long, SUN Fu-chun. Research on H-shaped backlash structure on gear pairs for relief of trapped-oil in pumps. Chinese Journal of Engineering Design, 2019, 26(1): 15-19,28.

链接本文:

https://www.zjujournals.com/gcsjxb/CN/10.3785/j.issn.1006-754X.2019.01.003        https://www.zjujournals.com/gcsjxb/CN/Y2019/V26/I1/15

[1] 李玉龙.外啮合齿轮泵困油机理、模型及试验研究[D].合肥:合肥工业大学机械工程学院,2009:1-5. LI Yu-long. Mechanism, modeling and experiment investigation of trapped oil in external gear pump[D]. Hefei:Hefei University of Technology, School of Mechanical Engineering, 2009:1-5.
[2] 孙付春,李玉龙,文昌明,等.齿轮泵侧隙卸荷的界定标准与验证[J].农业工程学报,2017,33(20):61-66. SUN Fu-chun, LI Yu-long, WEN Chang-ming, et al. Demarcated standard and verification of backlash off-load in external gear pumps[J]. Transactions of the Chinese Society of Agricultural Engineering, 2017, 33(20):61-66.
[3] YANADA H, ICHIKAWA T, ITSUJI Y. Study of the trapping of fluid in a gear pump[J]. Proceedings of the Institution of Mechanical Engineers Part A-Journal of Power & Energy, 1987, 201(11):39-45.
[4] EATON M, KEOGH P S, EDGE K A. The modeling, prediction and experimental evaluation of gear pump meshing pressures with particular reference to aero-engine fuel pumps[J]. Proceedings of the Institution of Mechanical Engineers Part I-Journal of Systems and Control Engineering, 2008, 220(5):365-379.
[5] 李玉龙,刘春艳,王生.大侧隙外啮合齿轮泵的困油特性和流量特性[J].机械科学与技术,2015,34(3):454-458. LI Yu-long, LIU Chun-yan, WANG Sheng. The trapped oil characteristics and flow characteristics with large backlash gap in external gear pumps[J]. Mechanical Science and Technology for Aerospace Engineering, 2015, 34(3):454-458.
[6] MUCCHI E, RIVOLA A, DALPIAZ G. Modelling dynamic behaviour and noise generation in gear pumps:procedure and validation[J]. Applied Acoustics, 2014, 77:99-111.
[7] MUCCHI E, DALPIAZ G. Elasto-dynamic analysis of a gear pump-Part Ⅲ:Experimental validation procedure and model extension to helical gears[J]. Mechanical Systems & Signal Processing, 2015, 50-51(9):174-192.
[8] BORGHI M, MILANI M, PALTRINIERI F. The influence of the notch shape and number on proportional directional control valve metering characteristics[C]//SAE Commercial Vehicle Engineering Congress & Exhibition, Chicago, Lllinois, Oct. 26-28, 2004.
[9] 李玉龙,孙付春.齿轮泵齿侧间隙与卸荷槽间距关系的定量分析[J].农业工程学报,2012,28(22):63-68. LI Yu-long, SUN Fu-chun. Quantitative analysis of relationship between backlash value and distance of two relief grooves in external gear pump[J]. Transactions of the Chinese Society of Agricultural Engineering, 2012, 28(22):63-68.
[10] 李玉龙,孙付春.齿轮泵困油的分析模型及侧隙计算[J].排灌机械工程学报,2011,29(2):118-122. LI Yu-long, SUN Fu-chun. Analysis model on trapped oil and backlash calculation in external gear pump[J]. Journal of Drainage and Irrigation Machinery Engineering, 2011, 29(2):118-122.
[11] 李玉龙.外啮合齿轮泵侧隙流量的精确计算[J].排灌机械工程学报,2013,31(8):656-661. LI Yu-long. Accurate calculation of backlash flow in external gear pump[J]. Journal of Drainage and Irrigation Machinery Engineering, 2013, 31(8):656-661.
[12] 李玉龙,唐茂.困油压力对齿轮泵流量脉动的影响分析[J].农业工程学报,2013,29(20):60-66. LI Yu-long, TANG Mao. Influence analysis of trapped oil pressure on flow pulsation in external gear pumps[J]. Transactions of the Chinese Society of Agricultural Engineering, 2013, 29(20):60-66.
[13] 何存兴.液压元件[M].北京:机械工业出版社,1985:45. HE Cun-xing. Hydraulic components[M]. Beijing:China Machine Press, 1985:45.
[14] 臧克江,周欣,顾立志,等.降低齿轮泵困油压力新方法的研究[J].中国机械工程,2004,15(7):579-582. ZANG Ke-jiang, ZHOU Xin, GU Li-zhi, et al. Study on new method of reducing the trap pressure of gear pump[J]. China Mechanical Engineering, 2004, 15(7):579-582.
[15] 李玉龙,孙付春,姚旗,等.航天器用超低黏度齿轮泵轻量化设计[J].农业工程学报,2016,32(21):109-114. LI Yu-long, SUN Fu-chun, YAO Qi, et al. Lightweight design of gear pumps with ultra low viscosity medium used in spacecraft[J]. Transactions of the Chinese Society of Agricultural Engineering, 2016, 32(21):109-114.
[16] 李玉龙,袁影,吴柏强,等.泵用齿轮副根切重合度的公式创建[J].机床与液压,2017,45(1):84-88. LI Yu-long, YUAN Ying, WU Bo-qiang, et al. A new contact ratio formula created for gear pairs with undercut in external gear pumps[J]. Machine Tool & Hydraulics, 2017, 45(1):84-88.
[17] 李玉龙.外啮合齿轮泵困油膨胀区的最小压力[J].排灌机械工程学报,2013,31(12):1049-1055. LI Yu-long. The minimal trapped-oil pressure of expansion stage in external gear pump[J]. Journal of Drainage and Irrigation Machinery Engineering, 2013, 31(12):1049-1055.
[18] 李玉龙.齿轮泵最大困油压力解析式的建立与验证[J].农业工程学报,2013,29(11):71-77. LI Yu-long. Establishment and verification of analytic formula for maximum trapped-oil pressure in external gear pump[J]. Transactions of the Chinese Society of Agricultural Engineering, 2013, 29(11):71-77.

[1] 陈洪月, 毛君, 张瑜. 基于双模齿轮的大排量齿轮泵的流场可视化仿真研究[J]. 工程设计学报, 2012, 19(3): 192-195.
[2] 唐良宝, 陈计军. 平衡式外啮合余弦齿轮泵结构和性能研究[J]. 工程设计学报, 2010, 17(4): 312-316.
[3] 臧克江, 周欣, 牛政科. 齿轮泵困油压力测试系统设计[J]. 工程设计学报, 2006, 13(4): 264-266.
[4] 杨逢瑜, 於又玲. 重质残油磁力传动齿轮泵磁偶合器扭矩计算[J]. 工程设计学报, 2003, 10(1): 52-54.