液压

The system software was designed to set test state,obtain test data,and control the pressure and temperature of pumping station,when the system is acting,the software can also monitor the key parameter and offer information for the system's maintenance,cleanout,calibration and emendation.

虽然飞机液压系统中液压泵的种类较多，但也有许多共同点。笔者依据飞机液压泵的性能要求、技术条件和试验大纲以及部队的实际情况，设计了飞机液压泵智能综合测试系统，以提高部队的日常维修能力。

In the hydraulic system, the controlling of the solenoid operated direction vale and the pressure switch is realized by the electric automation.

液压缸活塞杆的伸缩，使机械夹紧装置摆动，实现抽出垫板的目的。液压缸、液压马达的动作控制由液压系统实现。在液压系统中，采用了电磁换向阀和压力继电器。

"Hydraulic safety valve" is widely used in hydraulic power systems and hydraulic equipment of safety devices, pressure devices can be limited, is a special valve, which is different from the conventional valve, the traditional use of mechanical valves metal spring as a driving force, can only be limited to low pressure, encountered more BALANCING VALVES than 10Mpa pressure limit pressure can do to increase the volume of pressurized design, the traditional role of the high-pressure valves and high pressure hydraulic power systems and hydraulic equipment The limit pressure of necessity is bulky and complicated structure, difficult to manufacture large, high production costs; in the course of the fatigue of metal spring parameters change fluctuating pressure limiting Ambassador to regular revision to ensure the normal use.

&气动液压安全阀&是目前广泛应用于液压动力系统和液压设备中的安全装置，也可以作限压装置，是一种特殊的阀门，它不同于传统的阀门，传统阀门用机械金属弹簧为动力，只能限中低压力，遇到超过10Mpa以上的压力限压，闸阀只能做加大体积的增压设计，因此传统阀门作用于高压和超高压的液压动力系统和液压设备的限压时必然体积笨重，结构复杂，制造难度大，产品成本高；在使用过程中金属弹簧的疲劳变化大使限压参数波动大，要经常调整才能保证正常使用。

"Hydraulic safety valve" is now widely used in hydraulic power systems and hydraulic equipment in the safety device could also serve as limited pressure device, is a special valve, unlike conventional valves, conventional valves with mechanical metal spring as a driving force, can only be limited to low pressure, the pressure encountered over more than 10Mpa limit pressure can do to increase the volume of the Safety Overflow Valve booster design, the traditional role of the high-pressure valves and high pressure hydraulic power systems and hydraulic equipment The limit pressure of necessity is bulky and complicated structure, difficult to manufacture large, high production costs; in the course of the fatigue of metal spring parameters change fluctuating pressure limiting Ambassador to regular revision to ensure the normal use.

&气动液压安全阀&是目前广泛应用于液压动力系统和液压设备中的安全装置，也可以作限压装置，是一种特殊的阀门，它不同于传统的阀门，传统阀门用机械金属弹簧为动力，只能限中低压力，遇到超过10Mpa以上的压力限压，只能做加大体积的增压设计，因此传统阀门作用于高压和超高压的液压动力系统和液压设备的限压时必然体积笨重，结构复杂，制造难度大，产品成本高；在使用过程中金属弹簧的疲劳变化大使限压参数波动大，要经常调整才能保证正常使用。

The enterprise designs and produces over 8 series and 60 specifications of products, including mechanical crimpers series, mechanical cable cutter series, cable strippers series, Bolt cutter series, insulation cleanser series, low-voltage powerful electric solding iron series, and hydraulic tools series, etc.

E4F55 系列机械压线钳，系列机械式线缆剪，系列剥线钳，系列绝缘清洗剂，系列低压大功率电烙铁，高低压非晶磁性槽泥，系列液压工具（包括双速液压钳、分木式液压钳、液压紧线器、液压开孔器等）共八大系列六十多种型号规格的产品，深受市场的欢迎。

Studying on the hydraulic pipelines of the nitrogen-inflating hydraulic pile hammer, establishes a optimization objective function for it with the relevant methods of parameter optimization, and uses Matlab to solve the model, gets a group of optimization pipelines size, and tests the validity of this method. So more efficiency methods for hydraulic system design of the nitrogen-inflating hydraulic pile hammer are provided.

以氮爆式液压打桩锤液压管道为研究对象，应用参数优化设计的相关方法建立氮爆式液压打桩锤管路优化分析的目标函数，并利用Matlab编程对模型进行求解，得出一组优化后的管道尺寸，并检验这种优化方法的有效性，为氮爆式液压打桩锤液压系统的设计开发提供了更为有效的方法。

Designing the system schematic diagram explained the work principle of the hydraulic pressure synthesized test platform; According to the design of hydraulic pump, hydraulic valve, drill tubing choice and the computation, determined the model and the size of the hydraulic pressure part; In order to improving the consummation system, this article also carried on to test the system pressure loss and temperature increment; In addition, through the system calorific capacity computation, completed to choose the heater and the chiller ; Through designing the belt transmission and the axis structural, this article completed to the design of pumping station.

通过对系统原理图的设计，说明了液压综合试验台的工作原理；根据对液压泵、液压阀、油管等液压元件的选择和计算，确定了所需液压元件的型号及尺寸；为了改进和完善系统，本文还对系统压力损失和发热温升进行了验算；此外，通过对系统发热量计算，完成了对加热器和冷却器的选择；通过对带传动设计和轴的结构设计、校核，完成了对泵站的设计。

Designing the system schematic diagram explained the work principleof the hydraulic pressure synthesized testplatform; According to the design of hydraulic pump, hydraulicvalve, drill tubing choice and the computation, determined themodel and the size of the hydraulic pressure part; In order toimproving the consummation system, this articlealso carried on to test the system pressure loss and temperatureincrement; In addition, through the system calorific capacitycomputation, completed to choose the heater and the chiller ;Through designing the belt transmission and the axis structural,this article completed to the design of pumping station.

通过对系统原理图的设计，说明了液压综合试验台的工作原理；根据对液压泵、液压阀、油管等液压元件的选择和计算，确定了所需液压元件的型号及尺寸；为了改进和完善系统，本文还对系统压力损失和发热温升进行了验算；此外，通过对系统发热量计算，完成了对加热器和冷却器的选择；通过对带传动设计和轴的结构设计、校核，完成了对泵站的设计。

Currently Kong Qichui, hydraulic riveting machines, metal shavings Press, metal Da Baoji, forging hydraulic hammers used for steaming Kong Qichui head of the hydraulic power, closed a single point of presses, open-presses, More reactive auto forging presses, NC Jianban, bending machines, general Jianban, bending machines, rotary forging riveting machines, bar precision cutting machine, open-book-school and other varieties of products, but also for Automobiles, bicycles, the bearings industry design, manufacturing production lines, has become the domestic Kong Qichui, hydraulic forging hammer, hydraulic riveting machine, forging equipment bearing the production, export base.

目前拥有空气锤、液压铆接机、金属屑压块机、金属打包机、液压模锻锤、用于蒸空气锤改造的液压动力头、闭式单点压力机、开式压力机、多功位自动锻造压力机、数控剪板、折弯机，普通剪板、折弯机，摆辗铆接机、棒料精密剪断机、开卷校平机等多个品种的产品，还可为汽车、自行车、轴承行业设计、制造生产流水线，已形成国内空气锤、液压模锻锤、液压铆接机、轴承锻造设备的生产、出口基地。

Currently Kong Qichui, forging hydraulic hammers used for steaming Kong Qichui head of the hydraulic power, hydraulic riveting machines, presses, Bar-precision cut, multi-automatic forging presses, metal shavings Press Detroit sold cold extrusion machines, cutting plate machine, sheet metal bending machines, cutting sheet metal folding dual-use machine, decay resistance pumps, vacuum pumps, ball mill, pressure-ball machine, broken machines, vibration, grinding, and so on more than 20 series 50 Varieties of products, but also for the cars, bicycles, the bearings industry design, manufacturing production lines, has become the domestic Kong Qichui, hydraulic forging hammer, hydraulic riveting machine, forging equipment bearing the production, export base.

目前拥有空气锤、液压模锻锤、用于蒸空气锤改造的液压动力头、液压铆接机、压力机、棒料精密剪断机、多工位自动锻造压力机、金属屑压块机、活塞销冷挤压机、剪板机、板料折弯机、板料剪折两用机、耐腐泵、真空泵、球磨机、压球机、破碎机、震动磨、等20多个系列50多个品种的产品，还可为汽车、自行车、轴承行业设计、制造生产流水线、已形成国内空气锤、液压模锻锤、液压铆接机、轴承锻造设备的生产、出口基地。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。