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Analysis of axial force of double circular arc helical gear hydraulic pump and design of its balancing device

双圆弧斜齿齿轮液压泵轴向力的分析及其平衡装置设计

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Abstract

In view of the axial force produced in the working process of double arc helical gear hydraulic pump, the theory of differential equation of curve and curved surface was utilized so that the calculation formula of axial force was obtained and the relationship between the axial force and structure parameters of gears was clarified. In order to balance the axial force, the pressure oil in the high pressure area was introduced into the end face of the plunger to press the plunger against the gear shaft, and the hydrostatic bearing whose type is plunger at the end of the shaft was designed. In order to verify the balance effect of axial force, the leakage owing to end clearance and volume efficiency of gear hydraulic pump before and after the balancing process was analyzed. This paper provides a new analysis idea and balance scheme for the axial force produced in the working process of the double arc helical gear hydraulic pump, which can reduce the leakage owing to end clearance caused by the axial force and improve the volume efficiency of the gear hydraulic pump.

摘要

针对双圆弧斜齿齿轮液压泵在工作过程中所产生的轴向力, 采用曲线与曲面微分方程, 对其轴向力进行求解, 明确了轴向力与齿轮结构参数之间的关系. 为平衡轴向力, 采取了将高压区的压力油引入柱塞端面使得柱塞压向齿轮轴的方式, 并设计了轴端柱塞式静压轴承. 为验证轴向力的平衡效果, 对平衡之前和平衡之后齿轮液压泵的端面间隙泄漏量和容积效率进行了分析. 本文为双圆弧斜齿齿轮液压泵在工作过程中所产生的轴向力提供了一种新的分析思路和平衡方案, 可以降低以轴向力而带来的端面间隙泄漏量, 提高齿轮液压泵的容积效率.

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Authors and Affiliations

  1. School of Mechanical Engineering, Shandong University, Jinan, 250061, China

    Yi-fei Wu  (吴一飞), Pei-qi Ge  (葛培琪) & Wen-bo Bi  (毕文波)

  2. Key Laboratory of High Efficiency and Clean Mechanical Manufacture (Ministry of Education), Shandong University, Jinan, 250061, China

    Pei-qi Ge  (葛培琪)

Authors
  1. Yi-fei Wu  (吴一飞)
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  2. Pei-qi Ge  (葛培琪)
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  3. Wen-bo Bi  (毕文波)
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Contributions

WU Yi-fei wrote the draft of the whole manuscript. GE Pei-qi provided the concept and edited the draft. BI Wen-bo gave some advice on the design of the hydrostatic bearing system.

Corresponding author

Correspondence to Pei-qi Ge  (葛培琪).

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WU Yi-fei, GE Pei-qi and BI Wen-bo declare that they have no conflict of interest.

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Wu, Yf., Ge, Pq. & Bi, Wb. Analysis of axial force of double circular arc helical gear hydraulic pump and design of its balancing device. J. Cent. South Univ. 28, 418–428 (2021). https://doi.org/10.1007/s11771-021-4612-2

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  • DOI: https://doi.org/10.1007/s11771-021-4612-2

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