【摘 要】
：
本文对我国近期从西德引进的A4V型轴向柱塞泵在减小配流冲击方面采用的措施进行了分析,同时还与美国生产的P1V型泵斜盘带有横向倾角的抗冲结构及英国生产的伺服控制配流盘错
论文部分内容阅读
本文对我国近期从西德引进的A4V型轴向柱塞泵在减小配流冲击方面采用的措施进行了分析,同时还与美国生产的P1V型泵斜盘带有横向倾角的抗冲结构及英国生产的伺服控制配流盘错配角的抗冲结构进行了对比。从这几种泵的抗冲结构设计思想可以看出今后有如下的发展趋势:研究适应工况变化能力更强的抗冲结构;设计时注意压力梯度的变特性,及基本结构参数的优选;在成本许可的情况下在产品上逐渐采用可调节的抗冲结构。
In this paper, the measures adopted by our country to introduce A4V axial piston pump from West Germany in reducing the impact of the distribution flow are analyzed. At the same time, we also compare with the P1V-type pump swash plate in the United States, A comparison of the impact structures produced at the mismatch angle of the servo control plate was made. It can be seen from the design ideas of several kinds of pumps that there are following trends in the future: to study the impact structure that adapts more to changes in working conditions; to pay attention to the variation characteristics of pressure gradient and to optimize the basic structural parameters; Adjustable impact structures are increasingly used on the product at a costly cost.
其他文献
目的:探讨低氧微环境对人乳腺癌细胞株MDA-435中基质金属蛋白酶(matrix metalloproteinases,MMPs)及其抑制剂(tissue inhibitors of matrix metalloproteinases,TIMPs)表达的
以浅麻醉和麻痹大鼠为对象,利用计算机叠加技术观察了对脖肠神经施加不同强度的电刺激所诱发的脊髓背表面电位(CDP)的波形;延髓网状巨细胞核(NGC)对CDP的影响。实验发现,大鼠
In this paper we have studied the three-step delay DSRI method carefully and note that it excels the normal DSRI method in its simple mathematical model and no
吸声与隔声均是噪声控制中的重要技术措施,两者有着本质的区别,但实际应用中又常有联系。不熟悉噪声控制技术的人常把两者混淆,在应用中常常摘锗,以致达不到预期效果。 原理
当彩色反转片市场处于衰退时,各公司对反转片研究改进的竞争更加激烈了。因此是否开创新的系列将决定其在反转片领域里的世界领导地位。法《摄影师》曾介绍过富士克罗姆Velv
Rice embryos(Oryza,sativa L.cv.Zhen Shan 97)were irradiated with N_2laser at λ=0.3371μm and Nd:glass laser at λ=1.06μm in different dosages(e.g.30 min.60 m
作者通过体外试验探讨了钙通道阻滞剂异博定(VP)是否可影响人类免疫缺陷病毒1型(HIV-1)在淋巴细胞中的复制,以及急性HIV-1感染时[Ca~(++)]_1(细胞内Ca~(++))的变化。结果:急
采用一种新颖的方法制备出供体内应用的单抗制剂.用这种方法制备的单抗制剂克服了第一代单抗的不足,且特异性达100%,灵敏度高于80%.
A novel method for the preparation of
在三碘季胺酚制动的雌性家兔上进行实验。用玻璃微电极记录内侧视前区(mPOA)单位放电。观察mPOA中对阴道宫颈刺激(Vaginocervical stimulation,VC刺激)发生抑制反应的神经元(
A Ti: sapphire laser pumped synchronously by a bounded frequency-doubled pulse train of a pulsed mode-locked Nd : YAG laser was presented. The temporal characte