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外啮合齿轮泵向高压化发展所遇到的主要问题是怎样在高压下保持高寿命和低噪声。本文就CBG2型高压齿轮泵提高寿命,降低噪声所取得的试验研究成果作一介绍。1985年9月,该泵已在额定压力160巴、油温为80±5℃的条件下达到了100万次台架冲击试验,冲击后的总效率仍高于85％的攻关目标,达到国外七十年代末八十年代初的齿轮泵寿命水平,并于10月下旬通过了省级鉴定。一、CBG2型齿轮泵的主要结构和特点图1是CBG2型齿轮泵结构图。泵的主要特点是采用固定式侧板,侧板被前后泵盖压紧在泵体上,轴向不能移动,通过控制泵体厚度与齿轮宽度的公差,来保证齿轮与侧板间的轴向间隙。利用液压推动侧板产生的弹性变形,来实现轴向间隙自动补偿,从而提高了油泵的容积效率。
The main problem encountered with the development of high-pressure gear pumps is how to maintain high life and low noise under high pressure. In this paper, CBG2-type high-pressure gear pump to improve life expectancy and reduce noise obtained by the experimental research made an introduction. September 1985, the pump has been in the rated pressure of 160 bar, the oil temperature of 80 ± 5 ℃ under the conditions reached 1 million times the bench impact test, the total efficiency after impact is still higher than 85% of the research goal to reach seven In the late ten’s and the early eighties, the life of the gear pump was passed and passed the provincial appraisal in late October. First, the main structure and characteristics of CBG2 gear pump Figure 1 is the CBG2 gear pump structure. The main features of the pump is the use of fixed side panels, side panels are compressed in front of pump cover in the pump body, the axial can not move, by controlling the thickness of the pump body and gear width tolerance, to ensure that the gear and the side plate between the axial gap. The use of hydraulic pressure to promote the elastic deformation of the side plate to achieve automatic axial clearance compensation, thereby increasing the volumetric efficiency of the pump.