液压支架毕业论文

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1、 I 摘摘 要要 由于地下煤层的地质环境比较复杂，这就要求在不同的煤层环境中使 用不同的与之适应的液压支架。本论文主要阐述了一般掩护式液压支架的 设计过程。设计内容包括：选架型、总体设计、主要零部件的设计、主要 零部件的校核和液压系统的设计 由于该煤层厚度适中，选用掩护式液压支架，支架采用四连杆机构， 以改善支架受力状况。顶梁、掩护梁、底座均做成箱体结构；立柱采用双 伸缩作用液压缸，以增加工作行程来满足支架调高范围的需要。推移千斤 顶采用浮动活塞式结构，以减少推溜力和增大移架力。为了提高移架速度， 确保对顶板的及时支护，采用锥阀液压系统。 整个液压支架的设计都源于煤层厚度这一初始条件，这很好的

2、说明了 不同煤层需要不同的液压支架，于是液压支架的更新换代对于提高采煤效 率和增加井下安全性显得十分重要。 关键词：液压支架；液压；四连杆机构；采煤；支架选型；推溜；移架 II Abstract As the coal underground geological environment more complex, which requires coal in different environments with different to the hydraulic pressure support.The article mainly elaborated the general shie

3、ld type hydraulic pressure support design process. The design content includes: Chooses, the system design, the main spare part design, the main spare part examination and the hydraulic system design. Because this coal bed thickness is moderate, selects the shield type hydraulic pressure support. Th

4、e support uses four-bar linkage, improves the support stress condition. The top-beam, caving shield, the foundation makes the packed in a box body structure; The column uses the double expansion and contraction function hydraulic cylinder, increases the power stroke to satisfy the support to adjust

5、the high scope the need. Passes the hoisting jack to use the fluctuation plunger type, reduces pushes slides the strength and increases moves a strength. In order to enhance moves a speed, guarantees is prompt to the roof support, uses the mushroom valve hydraulic system. The design of the hydraulic

6、 pressure support from all seam thickness of the initial conditions, which is very good description of the different needs of different coal hydraulic pressure support, and therefore the upgrading hydraulic pressure support for improving efficiency and increasing the underground mining safety it is extremely important. Key word: The hydraulic support; hydraulic; four-bar linkage; coal mining; support type choice; push forwards the conveyer; advancing the powered support III 目录目录 目录 . I 前 言 1