Numerical simulation results indicate that emptied areas, especially such large ones as No.1, 5, 7 and 8, are potential harmful resources for extraction of 105~# ore body; 2. Potential safety problem due to emptied areas could be solved by filling works according to numerical calculation; 3. Trial experiment of material component gives basic filling parameters in weight as follows: tailings - crushed sand ratio of 3:1, cement-aggregate ratio of 1:6, and slurry density of 68-70%; 4. Fly ash is suggested to adopt in filling materials if possible because addition of fly ash can improve hydraulic conveying proprety of slurry and reduce cost of filling; 5. Current preparation system of filling slurry can still be used for filling works of 105~# ore body; 6. Economic and technical comparison among three drafts suggests that 10~# blind inclined shaft system is an optimal choice because of low capital and short pipeline.
本论文采用数值模拟、室内试验、系统设计和理论分析等多种研究手段，针对以上问题进行了综合研究，主要研究结论为：(1)数值模拟结果表明，采空区，尤其是1~#、5~#、7~#、8~#特大采空区存在安全隐患；(2)通过充填，采空区的安全隐患可以得到消除；(3)试验研究结果表明，充填材料最优配比为；骨料：尾砂75%、跳汰砂25%；水泥：混合骨料=1：6；质量浓度=68-70%；(4)条件许可时，添加粉煤灰可提高浆体输送性能，降低充填成本；(5)当前充填浆料制备系统可以继续为105号矿体采空区充填治理服务；(6)通过多方案比较，推荐10号盲斜井方案为105号矿体最佳充填线路；(7)研究结果对矿山实现无废害开采和可持续发展具有重要的意义。
In hydraulic synchronizing lifting technology for oversize structure, computer-output PWM signal as the input current of proportional valve is used to control the velocity of hydraulic cylinder.
文摘：在大型构件液压同步提升技术中，采用了计算机输出的脉宽调制信号作为电液比例流量阀的输入电流信号控制液压提升器的速度。
The current annual production capacity: 2, 000, 000 air brake, clutch booster 300000, hydraulic pump and clutch master cylinder 400000; auto cooling pumps 300, 000 Units; automobile generator 10 million units.
目前公司年生产能力：气制动阀200万只、离合器助力器30万只，液压泵及离合器总泵40万只；汽车冷却水泵30万台；汽车发电机10万台。
This paper analyses the typical working conditions and boom decline process of excavator, describes the shortcomings of the current control mode, address these shortcomings introduces a boom regeneration hydraulic circuit and control method of hydraulic excavator, and sums up the advantages of boom regeneration technologies.
摘 要：本文分析了挖掘机的典型工况和动臂下降过程，阐述了目前控制方式的缺点，针对这些缺点介绍了一种液压挖掘机动臂再生液压回路和控制方法，并总结了动臂再生技术的优点。
For the same current density, coefficients of electro-osmotic drag, back diffusion and hydraulic permeation with water content in the membrane increased gradually along the gas flow direction, while net water transport coefficient and proton transport resistance decreased as operating pressure increased; [JP2]at the same time electro-osmotic drag, back diffusion, hydraulic permeation and net water transport coefficients and water content in the membrane increased rapidly, while proton transport resistance decreased, which improved the performance of PEM fuel cells.
分析模拟结果发现，当电流密度相同时，沿气体流动方向，质子交换膜中水的电渗拉力系数、反扩散系数和水力渗透系数逐步增大，而水的净迁移系数逐步减小；同时，质子交换膜的含水量增加，质子传递阻力逐步下降；增大电池的操作压力，电渗拉力系数、反扩散系数、水力渗透系数、水净迁移系数和质子膜的含水量增加，而质子传递阻力下降，使燃料电池的性能得到了提高。
The Project of Dynamic Water Area in Olympic Rowing-Cannoeing Park is to place a channel with a high-speed current on an embankment filled with sandy silt and fine sand, since the mechanical and hydraulic properties of them are very bad, improvement have to be carried out on them.
奥林匹克水上公园动水赛道工程是将一个高速水流的水槽放置在由砂质粉土和粉细砂填筑的山体上，而粉细砂和粉土的力学和水力方面的工程特性很差，需要对其进行加固处理。
Introduced current maintenance and the service method of the tamping equipment hydraulic system.
介绍了捣固装置液压系统的日常保养和维修方法。
Making it an excellent high-pressure pump, on behalf of the hydraulic pump manufacturers on the current international advanced level.
使其成为一种优良的高压泵，代表当今国际上液压泵制造的先进水平。
At this time, the amplifier output current is zero, the servo valve closed, hydraulic cylinder driving the valve plate parked in the corresponding position of qT.
这时，放大器的输出电流亦为零，伺服阀关闭，液压缸带动的阀板停在相应的qT位置。
Emphasis has been attached to the characteristics of Sea-closure Engineering as well as the experience and theory, which have been accumulated in the practice of Sea-closure Engineering. Based on the summary of previous studies, hydraulic calculation on crevasse has been extended, with the regard of the theory of Bernoulli equation on the real fluid of total fluid, to realize the combined calculation of crest current velocity and the slope current velocity of cut-off dike. Related theories of systematic emulation have been applied to set up the model of emulation calculating system of reclaim crevasse.
在总结前人研究成果的基础上，结合实际流体总流伯努利方程的计算理论，对堵口水力计算进行了扩展和延伸，实现了龙口堰项流速和截流堤边坡流速的联合计算，继而应用系统仿真的相关理论方法建立围海堵口仿真计算系统模型，并采用面向对象的结构化程序设计语言Delphi作为开发平台，编制围海堵口仿真计算系统软件。
Our company has more than 10 years of history, the current main products are: 0.5 t-20t series NRK hyacinth, Shouban hyacinth, electric hoist, the pulley, tight wire, NRK monorail car, jack, loading zone, the electric hoist, lifting clamp, The chain rigging, hydraulic loader, hydraulic spiral from the top machines.
我公司有着十多年的历史，目前主要产品有：0.5t－20t系列手拉葫芦、手板葫芦、电动葫芦、滑车、紧丝器、手拉单轨跑车、千斤顶、吊装带、电动提升机、吊装钳、链条索具、液压搬运车、液压螺旋起顶机等。
The paper introduces the current status of study on the hydraulic design of the super-low specific speed centrifugal pump.
介绍了超低比转速离心泵水力设计的研究现状及设计过程中叶轮参数的选取方法。
This provides references for the improvement of the hydraulic performance indexes by only changing the runner instead of changing the spiral case, stay vane, guide vane, the flow passage form and geometric dimension of the draft tube of the old power station. This also provides references and approaches for the current situation of the modification of old power station.
本文也为已有的老电站在不改变蜗壳、固定导叶、活动导叶以及尾水管的流道形式及几何尺寸的前提下，只更换转轮，提高水力性能指标提供参考依据，为旧电站的改造提供依据和途径。
Chapter 1, the current status of industrial automation in China is introduced, and the phylogeny of hydraulic test system is given. The purpose, significance and contents of this thesis are presented.
第一章，简要介绍了我国工业自动化的发展现状，同时详细阐述了液压测试系统的发展历程，指明了本论文选题的目的和意义，以及本论文的主要研究方向和内容。
This paper aimed at issue of electro-hydraulic servo controller servo valve display circuit affecting their driving circuit at present, using Current analog Head and Relay, insteading of sampling circuit and voltage analog Head, improved the linearity and precision; Gain adjustment of the sensor conditioning circuits aimed at the general scope of the small, poor linearity. In this paper, a new amplifier circuit to increase and improve the linearity; It also introduces a method according to the actual situation to put a fixed resistance combination of potentiometer, and it improved the accuracy of circuit.
本文针对目前电液伺服控制器中电液伺服阀显示电路影响其驱动电路设计的问题，提出了用电流式模拟表头加继电器方法，代替了采样电路加电压式模拟表头，改善了线性度和精度；针对一般的传感器调理电路增益调节范围小，线性度不好的问题，本文采用了一种新的电路增加了放大倍数和改善了线性度；本文还介绍了一种根据实际情况把电位计和固定电阻结合的方法，提高了电位计在电路中的精度。
Acquired Tianjin Construction Machinery Ltd. of natural gas transmission pipeline hydraulic equipment production line project of the country are supporting equipment; Cixi Burgmann Sealing Materials Company W-type high temperature and high pressure spiral wound gasket has been successfully used to HYDROCRACKER up; Dalian Hydraulic Parts Plant Factory and Shanxi Changzhi Hydraulic steering vane pump, are of medium and heavy motor vehicle steering system of the key components, the current annual output of both plants has reached more than 10 million units; Qingdao Kipper sealed the company's new portfolio of large-scale bi-directional sealing and anti-water oil seal are respectively 9 tons FAW Jiefang trucks and tractor trailers 1 matching seals; addition Tianjin Co., Ltd. special precision hydraulic hydrostatic transmission devices and many way valve, Huzhou Miguel pieces of the company's multi-function hydraulic slide-valve, Weihai, a combination of pneumatic components调压阀the air relief valve, Guizhou Feng Yang's hydraulic pump stations and hydraulic valves, such as shift, are well received by users.
天津市精研工程机械传动有限公司的天然气输送管道生产线液压设备是国家西气东输工程的配套设备；慈溪博格曼密封材料公司的高温高压W型缠绕垫片，现已成功地用于加氢裂化装置上；大连液压件厂和山西长治液压件厂的转向叶片泵，是中、重型汽车转向系统中的关键部件，目前两个厂的年产量已达10万台以上；青岛基珀密封公司的新型组合双向密封和大型防泥水油封是分别为一汽解放牌9吨车和一拖拖拉机配套的密封件；此外天津特精液压股份有限公司的静液压传动装置和多路阀、湖州生力液压件公司的多功能滑阀、威海气动元件公司的组合调压阀的空气减压阀、贵州枫阳液压公司的液压泵站和液压换挡阀等，都深受用户的好评。
Kang Mei wind air-conditioning plant area of 20000 O factory with OK series of high-speed punching machine, vertical pipe up, pipe up horizontal, brass than the straight machine, bending machine, such as more advanced production equipment, air-conditioning heat exchangers; has 100 tons of hydraulic machines, 200 tons hydraulic machine, 10-80 tons of punch, Flanging Machine, Shearing Machine, CNC punching, plasma cutting machine, such as sheet metal processing equipment; has lathes, milling machines, slotting machine, planer, such as mechanical processing equipment; TFD open computer automation material production line, TFD Zicheng duct flange molding machine, COMIFO round duct molding machine, COMIFO Oval Duct Duct molding machine, such as processing equipment; has sheeting molding machine, sheet laminating machine, electric machine, Vibration drainage equipment, etc., there is wire anemometer, noise, the leakage current measuring instrument, puncture test bench, test equipment, such as dynamic balancing machine and some auxiliary equipment.
康美风空调厂厂房面积达20000㎡，拥有OK系列高速冲床、立式涨管机、卧式涨管机、铜管较直机、弯管机等比较先进的空调换热器生产设备；有100吨油压机、200吨油压机、10-80吨冲床、折边机、剪板机、数控冲床、等离子切割机等板金加工设备；有车床、铣床、插床、刨床等机械加工设备；TFD电脑自动化开料生产线、TFD自成法兰风管成型机、COMIFO圆风管成型机、COMIFO椭圆风管成型机等风管加工设备；有护板成型机、卷板覆膜机、电热丝切边机、振动排水机等配套设备，有风速仪、噪声计、漏电测量仪、击穿试验台、动平衡机等检测设备及一批辅助设备。
The manipulator waist's rotary motion needs certain positioning control precision therefore uses step-by-steps the motor-driven to realize; Because uses the hydraulic pressure execution cylinder to make the horizontal arm and the vertical arm therefore the big and small arm uses the hydraulic pressure actuation; Manipulator's hand structural design because the work piece is the sheet use air current negative pressure type sucker.
机械手腰部的旋转运动需要一定的定位控制精度，故采用步进电机驱动来实现；因为采用液压执行缸来做水平手臂禾酃直手臂，故大小臂均采用液压驱动；机械手的手部结构设计，因为工件是板料，使用气流负压式吸盘。
The procedure of reliability design based on this ideal of the current'Specification for Seismic Design of Hydraulic Structures'issued by the above two sectors is briefly introduced. It is expected that such procedure can still be accepted by both sectors.
简介了经水利部和电力工业部共同颁布的现行《水工建筑物抗震设计规范》在修编中的转轨套改，并期盼这种处理方式能继续为两个部门所保持。
Moreover, the hydraulic pressure pumping station has used the Neutral high hydraulic pressure actuation design and the small work current capacity, reduces the hydraulic system along the regulation resistance loss and the local pressure loss, reduces the pipeline interior fat liquor hit.
另外，液压泵站采用了的中高压液压驱动设计和较小的工作流量，以减少液压系统的沿程阻力损失和局部压力损失，减少管路内部油液撞击。