掩护式液压支架设计说明书_毕业设计论文.docVIP

掩护式液压支架设计说明书 摘要 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。 支架的形式为掩护式支架。支架除了要有效的对顶板进行有效支撑，还要实现升、降、推移四个步骤。支架采用四连杆机构，改善支架的受力状况，缩小支架的升降过程中顶梁前端前后移动的距离。立柱采用单伸缩液压缸，前端带有加长杆，以满足支架最低及最高位置时的高度要求。顶梁掩护梁、底座都做成箱体结构用钢板焊接而成。 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。 在研制液压支架时，需要对支架进行生产试验和分析研究，确定合理的液压支架受力参数、运动参数和结构参数，以及选定液压支架最佳方案等方面综合性的科学技术问题。本设计主要从支架的工作原理这手，然后进行总体结构设计以及校核。 关键词：液压支架；顶梁；底座；立柱；结构设计 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 shield type hydraulic pressure support design process. The design content includes: Chooses, the system design, the main spare part design, the main spare part examination. The support eliminates must realize effectively carries on the strut to the roof, but also must realize ,to fall, to push, move four steps .the support uses four link motion gears, improves the support the stress condition, reduces the support to rise and full the distance which in the process fort end the top-beam around moves. The column uses the list expansion and contraction hydraulic cylinder, front end has legthens the pole, satisfies the support to be lowest and time the highest position high request. The top-beam, shields Liang, the foundation all makes the packed in a box body structure, becomes with the steel plate welding. The design of the hydraulic 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. At research to presses the support, need to carry on produce to experiment and analyze the research, make sure reasonable of liquid presses the support