共查询到20条相似文献,搜索用时 406 毫秒
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分析了斜齿轮轮泵在直齿齿轮泵啮合传动的不同点,得出了斜齿齿轮泵重合度要求的特殊条件,构建了一个以斜齿齿轮泵的输出流量脉动最小为目标函数的斜齿齿轮泵齿轮优化设计的数学模型。 相似文献
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本文综合计算机技术、自动控制技术、传感器技术和液压技术提出并研制了高度自动化、高效率、高精度和高可靠性的SH3281高压泵和转向泵综合试验台,同一试验台上可以测试流量相差较大的SH3281高压泵和转向泵;并提出和实现了一种压差极小的油泵替代负荷机构。 相似文献
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分析了斜齿齿轮泵和直齿齿轮泵啮合传动的不同点 ,得出了斜齿齿轮泵重合度要求的特殊条件 ,构建了一个以斜齿齿轮泵的输出流量脉动最小为目标函数的斜齿齿轮泵齿轮优化设计的数学模型 相似文献
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介绍了大型液压全调节系统在斜轴泵、竖井贯流泵上的开发和应用,阐述了叶片全调节系统的原理、特点及优越性,为类似泵站的设计开发提供了有利的参考。液压全调节系统在大型水泵上的应用,已在多个大型泵站中得到成功认证。 相似文献
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We report an experimental method to study the anelastic properties of materials at high pressure and high temperature. The multianvil high pressure deformation device, used to apply a cyclic loading force onto the sample, can reach 15 GPa and 2000 K. A synchrotron x-ray radiation source provides time resolved images of the sample and reference material. The images yield stress and strain as a function of time; stresses are derived from the reference material, and strains from the sample. This method has been tested by applying a sinusoidal stress at megahertz to hertz frequency on a San Carlos olivine specimen at 5 GPa and up to 2000 K. Strain as small as 10(-5) can be resolved. We have obtained experimental results which exhibit resolvable attenuation factor (Q(-1)) and shear modulus (M) at deep Earth conditions. These results are in quantitative agreement with previously reported lower pressure data and suggest that temperature and grain size have dominating effect on these properties. 相似文献
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为了更好地满足圆材校直切断机、高速切断机等设备的使用需求,经过多次设计、试验,采用斜楔式送料夹紧方案设计开发了一种新型的圆材送料器.使用结果表明该送料器不但提高了以往圆材送料机构的送料频率和送料定位精度,还使产品的形状精度得到改善.介绍了该送料器的结构和工作原理,详细描述了其夹紧送料机构和调整机构的设计. 相似文献
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Jung D Hörlein R Kiefer D Letzring S Gautier DC Schramm U Hübsch C Öhm R Albright BJ Fernandez JC Habs D Hegelich BM 《The Review of scientific instruments》2011,82(1):013306
Here, we report on the development of a novel high resolution and high dispersion Thomson parabola for simultaneously resolving protons and low-Z ions of more than 100 MeV/nucleon necessary to explore novel laser ion acceleration schemes. High electric and magnetic fields enable energy resolutions of ΔE∕E < 5% at 100 MeV/nucleon and impede premature merging of different ion species at low energies on the detector plane. First results from laser driven ion acceleration experiments performed at the Trident Laser Facility demonstrate high resolution and superior species and charge state separation of this novel Thomson parabola for ion energies of more than 30 MeV/nucleon. 相似文献
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Experimental results in the literature indicate that electric brushes may deform thermally, leading to point contact with the slip ring at high current levels. The present work provides theoretical support for these observations and a quantitative statement showing how operating variables influence this behavior. The analysis is restricted to a two-dimensional model of the brush with isotropic and constant material properties. The most unexpected result is that for steady current flow cooling of the exterior of the brush increases the tendency to deform unfavorably. 相似文献
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Using a triple-pass plane and a confocal Fabry-Pérot interferometers in tandem, we have constructed a Brillouin spectrometer with a frequency resolution of 10(8) and a contrast of more than 10(10). Our system is controlled and fully stabilized by a desktop calculator, allowing efficient data collection for very long integration times. 相似文献