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液压系统双泵合流技术探究梁晓东,冯茂林,孙芬北京科技大学车辆工程系摘 要:介绍了目前液压系统中广泛采用的合流技术,理论分析了现在应用最广的外啮合渐开线齿轮泵的流量脉动.通过Autom ation Stud io对某型地下铲运机液压系统的转向液压系统和工作液压系统的合流分析,提出了液压系统合流技术可以降低液压系统流量脉动,提高液压系统工作机构的速度稳定性,降低系统噪声,提高工作机构效率.文章还分析了合流技术设计与装配的基本要求.最后总结了液压系统合流技术的应用及优点.关键词:合流技术;液压系统;Automation Studio;......
of precipitation and hydrolysis of the element, transport- ation of microorganisms, heating and cooling of the bed. The transportation of solute, momentum, heat and microorganism is achieved by the solution......
has the maximal bending stress, which is only 2.2 MPa. When the moving velocity is 1.00 m/s, the configur- ation of the flexible riser is bad, and its horizontal resistance to the miner reaches 18......
decomposition and reconstruction algorithm[20-21]. 3 Results and discussion 3.1 Multi-fractal characteristic of pressure fluctu- ation decomposed signals The pressure signals at gas flow flux, V=0.54 m3/h... scale 1 and scale 2 with different gas flow fluxes and the value of Hurst exponent is less than 0.5, which approaches the characteristics of highly anti-persistent processes. It shows that the signals......
Phase and microstructure selection in directionally solidified peritectic alloys with convection SU Yan-qing(苏彦庆), LI Xin-zhong(李新中), GUO Jing-jie(郭景杰), WU Shi-ping(吴士平),DING Hong-sheng(丁宏生), FU Heng-zhi(傅恒志) School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150......
- ation period lamellas thickness (t) of TiN and TaN, respectively, which can be written as Hmultilayer=HTiNtTiN/Λ+HTaNtTaN/Λ ......
of Ti0.5Al0.5N coating after 10 h oxid- ation at 800 ℃ can not form. 3.3 Corrosion under synergistic of water vapor and NaCl Fig.8 shows the corrosion kinetics of uncoated and coated 1Cr11Ni2W2MoV steel at 600......
of magnesium alloys. The standard electrode potential of pure magnesium is known to be the lowest among engineering metallic materials, implying its poor corrosion resistance. Fig.5 shows the polariz- ation......
