液壓升降臺(tái)本科畢業(yè)設(shè)計(jì)說明書-文庫吧
2025-05-17 22:57 本頁面
【正文】 of hydraulic cylinders to promote the X aircraft, leding to realize the mobile hydraulic lifting platform is mainly posed of two parts : hydraulic parts and mechanical parts. In the design of the hydraulic parts, I first made sure the hydraulic system. In the process of selecting the basic of hydraulic control loop , the direction loop I chosen to use three position fourway electromagic valve,and the balance loop I chosen to use pilotcontrolled check value. After the identification of the basic loop, I also made sure the form of hydraulic transmission system, the development of the hydraulic system schematic diagram, and then I designed,selected the hydraulic ponents and accessories, and checked them. After calculating I selected two 70 mm hydraulic cylinder, I selected the vane pump as the hydraulic pump. According to the maximum power of this system I chosen Y90S4 threephase asynchronous motor. After determining the pump, I also chosen the other ponents and accessories reasonly and finaly I designed the valve block and calculated the efficiency. The mechanical parts is mainly posed of inside and outside link and On board aircraft, the next board aircraft. Through the design, choice of materials and the structure and after the stress analysis and strength of their check, the results proved that the mechanical parts can satisfy the design requirements,which further pleted the design of the subject. Key words: Hydraulic。 takeoff and landing platform。Inside and outside link 液壓升降臺(tái) iii 目錄 1 總 論 ................................................................. 1 2 確定液壓系統(tǒng)方案 ....................
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