A cut-off plane valve applicable for the hydraulic shield in the coal mine is introduced, which has the feature of high pressure, large flux and small handling moment.
介绍了一种适应于煤矿井下液压支架使用的高压、大流量、操作力矩小的先导式平面截止阀，并详细介绍了其工作原理、结构和使用性能特点。
A calibration valve oil for hydraulic shield safety valves was formulated by a base oilobtalned from the distillate of a deep-refining paraffinic crude with qualified additives.
以深度精制的石蜡基馏分油为基础油，添加具有改善油品性能的添加剂研制了液压支架安全阀校阀油。
A hydraulic variable speed drive system of shield disk cutter has been designed.
设计了盾构刀盘变转速液压驱动系统。
A hydraulic drive system of cutter head in shield tunneling machine was designed, which is open type hydraulic system and controlled in open-ring.
设计了一个盾构掘进机的刀盘驱动液压系统，该系统是开式液压系统，应用电液比例控制技术实现了泵排量实时调节。
A thrust hydraulic system of shield tunnelling machine integration of pressure and flow control was designed.
设计了一种基于压力流量复合控制的盾构推进液压系统。
The techniques of hydraulic control of shield tunneling machine are also described.
结果表明采用电液比例控制技术可以实现刀盘的调速要求；
A thrust hydraulic system of shield tunnelling machine with pressure and flow compound control was designed, and hydraulic cylinders were also controlled in groups.
设计了一种基于压力流量复合控制的盾构推进液压系统，对液压缸进行了分组控制。
An improved cutter head drive hydraulic system of the shield tunneling machine was proposed, which achieved energy saving by optimizing the drive power.
设计了一个盾构掘进机的刀盘驱动液压系统，该系统是开式液压系统，应用电液比例控制技术实现了泵排量实时调节。
The structural feature and its rational application of standing shield hydraulic are introduced in brief.
对支撑掩护式液压支架的结构特点及合理应用等进行了简要介绍。
This paper is targeted to the design and manufacture of hydraulic support base boring machine and a shield.
有针对性地设计制造了液压支架的底座镗孔机和掩护梁镗孔机。
The article mainly elaborated the general shield type hydraulic pressure support design process.
本论文主要阐述了一般掩护式液压支架的设计过程。
Based on the investigation and research result by reading, analyzing and summarizing lots of literatures, this paper discusses the electro-hydraulic control system of shield machine's erection system.
本论文在对盾构技术充分现场调研的基础上，通过阅读、分析及综合大量文献，对盾构管片拼装机电液控制系统进行了设计与分析研究，并得出了一些有价值的结论。
Because this coal bed thickness is moderate, selects the shield type hydraulic pressure support.
由于该煤层厚度适中，选用掩护式液压支架。
Because this coal bed thickness is moderate, selects the shield type hydraulic pressure support.
由于该煤层厚度适中，选用掩护式液压支架。
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