• CN:11-2187/TH
  • ISSN:0577-6686

›› 2006, Vol. 42 ›› Issue (4): 161-167.

• 论文 • 上一篇    下一篇

柔性液压冲击系统

丁问司;迟永滨   

  1. 华南理工大学汽车工程学院
  • 发布日期:2006-04-15

FLEXIBLE HYDRAULIC IMPACTOR

DING Wensi;CHI Yongbin   

  1. College of Automotive Engineering, South University of Technology
  • Published:2006-04-15

摘要: 液压冲击器对工作对象变化的适应能力称为冲击器柔性。现行液压冲击器以行程反馈原理来工作,由于体积及加工工艺的限制,冲击能只能在2~3挡范围内调节,且调节时需要停机。这样既不能提高工作效率,又不能实时、精确地根据冲击对象的物理性质(硬度、块度)来调节冲击参数,其柔性品质很低。研究具有自适应能力和柔性冲击能力的液压冲击器是冲击机械研究中的一个前沿性问题。基于压力反馈的氮爆式冲击器,利用活塞的冲击反弹特性实现对冲击对象性质的判断,并通过计算机控制由柔性配流系统实现冲击能与冲击频率的独立无级调节,可达到柔性冲击的效果。试验表明,柔性液压冲击系统具有时间、空间和环境等多种柔性品质。

关键词: 冲击 反弹 柔性 冲击器

Abstract: The impactor’s performance varies according to its work objects, and this is called its flexibility. As the existing hydraulic impactors work on the principle of distance feedback, they are restricted by the volume and machining process. The power of such impactors can only be adjusted within the range of 2~3 grade, and they have to stop working for adjustment. Consequently, neither can such impactors work efficiently nor can they adjust their performance according to the physical nature of the work objects. How to make the impactor’s performance automatically acclimatize to the environment or the different objects is an advanced study in this field. A new nitrogen-inflating impactor based on pressure feedback principle is put forward. It can estimate the work object’s nature by piston’s rebound behavior and adjust the power and frequency steplessly by flexible flow distribution system, which achieves the flexible impact. The field test shows that the new flexible impactor possesses great flexibility as regards its working time, space and environment.

Key words: Flexibility, Impact, Impactor, Rebound

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