1) piston hydraulic single prop
活塞式单体液压支柱
1.
The paper stated the status of the hydraulic single props used in coal mining faces at home and broad The paper provided the existing problems in the technical structure and principle of the piston hydraulic single prop The paper also provided a view on a development of new and environment hydraulic single pro
介绍了国内外回采工作面单体液压支柱的现状,指出了活塞式单体液压支柱在技术结构和原理方面存在的问题,提出了研制新型和环保型单体液压支柱的观点。
2) individual hydraulic prop
单体液压支柱
1.
Application of work place tool chests to individual hydraulic prop overhauling process;
工位器具在单体液压支柱大修中的应用
2.
Usage of individual hydraulic prop in thin coal seam face;
单体液压支柱在薄煤层工作面中的使用
3.
In this paper,the present situation and development of research are summarized briefly from the manufacturing and application on individual hydraulic prop.
从制造和使用方面综述了单体液压支柱研究的历史、现状及发展趋势,介绍了单体液压支柱的类型,概述了单体液压支柱工作介质、性能试验设备、密封元件、表面防腐、维修、制造技术等方面的进展情况。
3) Single hydraulic prop
单体液压支柱
1.
Application of FRP in single hydraulic prop;
玻璃钢材料在单体液压支柱中的应用
2.
Discussion on the application of 3.5 m single hydraulic prop mining all height at one times in slope long wall mining;
3.5m单体液压支柱一次采全高在倾斜长壁开采中的应用
3.
Digging overall height floor coal at one times at about 3.0 m seam face with single hydraulic prop;
3.0m左右煤层采用单体液压支柱支护卧底煤一次采全高
4) hydraulic prop
单体液压支柱
1.
Upper prop structure and stress analysis of new hydraulic prop;
新型单体液压支柱活柱体结构及受力分析
2.
Approach on influencing factor about setting load of a hydraulic prop;
单体液压支柱初撑力影响因素探讨
3.
Reasons of leaking at the up cavity in the movable post of Type DZ28 hydraulic prop and its improvement;
DZ28型单体液压支柱活柱上腔漏液原因及改进
5) DZ22 hydraulic prop
DZ22单体液压支柱
6) hydraulc prop
液压单体支柱
补充资料:活塞式无油干式机械真空泵原理及简介
活塞式无油干式机械真空泵技术要求不太复杂,容易制造。
该泵的外形呈扁方形,是由四个阶梯形活塞及四个阶梯形气缸组成。与电机直联的轴通过四根连杆带动四个活塞。活塞的背面空间由次级活塞抽气,以减少泄漏和降低极限压力。每个气缸都有进气阀与排气阀。四个活塞组成三个压缩级,为了增加抽速,两个活塞是并联的,为了便于泵在大气压力下的启动,设置了辅助排气阀,当活塞的排气压力高于大气压力时,有一部分气体通过阀排入大气,当其排气压力低于大气压力时,则排出气体依次进入第三个、第四个气缸压缩后排出泵外。泵的压缩比可达到 105 ,泵的极限压力可达 1.3Pa 。泵气缸的内表面衬有聚合材料,以降低摩擦系数与磨损。这种泵的功率消耗低,散热条件较好,不需要冷却水。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
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