液压

Steering gear may be driven by either of the two hydraulic pumps, the other for spare. Pump unit to be electric driven variable type or fixed stroke type (according to standard of steering gear maker).

舵机可由2台液压泵中的任一台驱动，另一台备用，泵装置为电动驱动的变量液压泵或定行程液压泵。

Since all the three gimbals of the simulator are directly driven by hydraulic motors, the performance of the hydraulic control system is very important to the simulator's.

由于液压仿真转台的每个框架都是由液压马达直接驱动，因此相应的液压控制系统的性能对转台的性能有着十分重要的影响。

Three-axis hydraulic simulator is a complex multiple-input-multiple-out nonlinear system. Its inner and outer gimbals are directly driven by a set of hydraulic servo system respectively, and its middle gimbal is directly driven by dual hydraulic motors servo system. The performance of hydraulic control system is very important to the simulator's.

液压三轴仿真转台是一个多输入多输出的复杂非线性系统，其内框和外框各由一套电液位置伺服系统直接驱动，中框由双液压马达伺服系统直接同步驱动，相应的液压控制系统的性能对转台的性能有着十分重要的影响。

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Hydraulic hammer model in the figure, you may re-express or bucket excavator machine capacity, but also may indicate that the weight of hydraulic hammer, or drill rod diameter, or hydraulic hammer impact energy.

液压锤型号中的数字，可能表示挖掘机机重或斗容，也可能表示液压锤重量，或钎杆直径，或液压锤冲击能。

The factory is engaged in the production of specifications hydraulic equipment, hydraulic cylinders, cylinder, high-pressure presses cylinder hydraulic hose assemblies complete sets of equipment and other professional enterprises.

本厂是从事生产各种规格液压传动设备、液压缸、气缸、压力机高压缸软管总成及其它液压成套设备的专业企业。

The company since its inception has been engaged in the development of hydraulic parts and sales; main products have various types of hydraulic tubes and assembly of hard and soft, hydraulic components, Japan Construction Machinery Co., Ltd. chassis parts, instrumentation, etc.; distribution of the major brands have Germany Hose Sunway, Italy Manuli, Germany Aeroquip, the United States Sel, the United States MEGASPIRAL, Libao, etc.; Express connector (Italy: DNP brand), the management folder, resin tube (UK: EUROFLOW brand), high pressure ball valve, Teflon tube, withhold machine (Finland: FINN-POWER), a variety of industrial tubes, such as high-temperature steam pipes, cement pipes and so on.

公司自成立以来一直从事液压零件的研制和销售；主要产品有各种型号的液压软硬管及总成、液压零部件、日本株式会社工程机械底盘件、仪器仪表等；经销的胶管品牌主要有德国Sunway 、意大利Manuli 、德国Aeroquip、美国Sel 、美国MEGASPIRAL、Libao等；快速接头，管夹，树脂管（英国：EUROFLOW品牌），高压球阀，铁弗龙管，扣压机（芬兰：FINN-POWER），各种工业管，如高温蒸汽管，水泥浆管等。

Hydraulic oil in the hydraulic system is the work of the energy transfer medium, there are a variety of mineral oil, emulsion oil hydraulic molding Hop categories.

液压油是液压系统中传递能量的工作介质，有各种矿物油、乳化液和合成型液压油等几大类。

Hydraulic oil in hydraulic systems are the work of the energy transmission medium, has a variety of mineral oil, emulsion oil hydraulic molding Hop categories.

液压油是液压系统中传递能量的工作介质，有各种矿物油、乳化液和合成型液压油等几大类。

Based on the detailed analyzing of impact system working process, the differential eguation of the system was got, and the mathematical model of the hydraulic impact system was builted, on basis of the mathematical model, By using of dynamic simulation function of Matlab ,the author has built the simulation model of the impact system based on software Simulink and run it after inputting the parameter ,the dynamic graph curve of impact velocity and presser of oil and position of knife rest were got, and the dynamic characteristic of impact system was analyzed,the simulated results are accorded with the fact,and some rational parameters can be found.

在对冲击式采煤机液压冲击系统工作过程进行详细分析的基础上，运用微分方程建模方法，建立了液压冲击系统的数学模型即系统的动态方程，并在该数学模型的基础上，采用Matlab中的Simulink动态仿真功能，建立了基于Simulink的冲击系统仿真模型，通过给定冲击式采煤机冲击系统的相关参数，对该系统进行仿真，得到了冲击式采煤机工作过程中冲击速度和油液压力以及刀架位移的变化曲线，进而对冲击系统的动态特性进行了分析，结果与实际情况较为吻合，并由此得出某些合理的参数。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。