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¡¡¡¡Abstract
¡¡¡¡As an important supporting device on the coal mining face, the hydraulic supportdirectly determines the safe production of the mine. The column is an important part ofthe hydraulic support. The main function is to adjust the height of the support andsupport the coal seam above the fully mechanized mining face. The quality of columndeterminesthe reliability of the hydraulic support . The working environment of the fullymechanized mining face is very bad, which will seriously damage the column, affectthe safety and reliability of the hydraulic support and shorten its service life. In order toensure safe production, after the completion of mining of a working face, the columnneeds to be dismantled and maintained.
¡¡¡¡The column guide sleeve disassembly is a difficult problem in the columndisassembly, and the conventional horizontal disassembly column will cause problemssuch as guide sleeve thread damage, cylinder damage and seal crushing. A columnvertical disassembling and installing machine is designed to facilitate the disassemblyand assembly of the column and improve the disassembly and assembly quality andefficiency of the column. Completed the following research work:
¡¡¡¡(1) The overall structural design was carried out for the functions that the verticaldisassembling and installing machine needs to implement. According to the realizationof the various mechanisms of the vertical disassembling and installing machine, thecomposition, function and key component structure design of each mechanism areintroduced in detail.
¡¡¡¡(2) The hydraulic system is the power system of the vertical disassembling andinstalling machine, and the hydraulic components are designed and selected. Thehydraulic cylinder of the actuator is designed, the actuator hydraulic motor and thehydraulic pump of the power component are calculated and selected, the reliablehydraulic circuit is determined and the corresponding control and auxiliarycomponents are selected, and the hydraulic schematic is finally determined.
¡¡¡¡(3) Static analysis of key components by finite element method, in order to ensure the rigidity and strength of key components of vertical disassembling and installingmachine. The static analysis results show that the stiffness and strength of the rotatingdisc and the lifting frame meet the requirements, and the ratchet disc meets therequirements after structural improvement.
¡¡¡¡(4) Under the premise of satisfying the rigidity and strength, the finite elementmethod is used to optimize the design of the rotating disc and the lifting frame.According to the results of topology optimization, the rotating disc and the liftingframe are lightly designed, and then the static analysis of the rotating disc and thelifting frame after optimization is carried out. The analysis results show that therotating disc and the lifting frame not only reduce the quality after being lightweight. ,saving costs, while also meeting the requirements of stiffness and strength.
¡¡¡¡By designing the vertical disassembling and installing machine, the column guidesleeve can be successfully disassembled, and the guide sleeve can be perfectlydisassembled even if it encounters corrosion. The vertical disassembling and installingmachine greatly improves the efficiency and quality of the disassembly and assemblycolumn, and at the same time reduces the labor intensity.
¡¡¡¡Figure [59] table [8] reference [70]
¡¡¡¡Key words: vertical disassembling and installing machine; overall design; hydraulicsystem design; finite element analysis and optimization
¡¡¡¡Ä¿ ¼
¡¡¡¡Õª Òª.......................................................................................................... I
¡¡¡¡Abstract....................................................................................................... III
¡¡¡¡1 Ð÷ÂÛ......................................................................................................... 1
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