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本科毕业设计说明书
题 目：2t剪叉式升降平台设计
院 〔部〕：机电工程学院
专 业：机械工程与自动化
班 级：机is currently widely used in various trades and industries, is a cargo flow in the area more desirable and reasonable take-off and landing platform. Hydraulic system is the scissors-type hydraulic lifting platform for the drive and control of the hydraulic cylinders driven by changes in the rate scissors, plete lifting tasks, through balance valve, relief valve and the governor valve control, the governor pleted , Packing, braking and balance function. The design for the main features of the take-off and landing platform for analysis, the take-off and landing platform for the general layout programmes and identify key performance parameters, agencies and parts of the structure of the programme design, the main control programme design, on-step down, scissors mechanism design and calculation With two stability, reliability checking. The topic of cross-cutting issues. The take-off and landing platform for regional operations are flammable, explosive, and other places. Require safe, reliable, high degree of automation. In order to ensure regional warehouse management and improve the personal safety of movements of goods safety, use of unmanned operations, security installations and all kinds of electrical protection device plete, reliable and easy to operate and maintenance. Key words: hydraulic lifting platform; scissors; hydraulic cylinder; on the platform; base
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1 前 言
剪叉式液压升降平台概述
剪叉式液压升降平台开展状况
剪叉式液压升降平台是一种结构比拟简单，但举升力大、升降平稳、噪音低、操作方便、维修简便。并可以停留在升降X围内的任意位置上的一种升降平台。它目前广泛地应用在各行各业，是一种货物装卸流通领域中较为理想合理的新颖机具。
当前国外生产升降平台的国家比拟多，如日本、德国、美国、英国等国家。升降平台在国外有的国家生产已有几十年的历史了，有多节和单节升降平台，有移动式、固定式、超低式等各种型式，绝大多数采用液压驱动。并广泛地应用在工业、航空、造船、商业、仓库、码头等场所，特别在商业系统货物装卸作业中已形成系列化的。如英国uK起重某某，他们生产多种形式的升降平台来适应商业系统方面各类仓库的装卸需求，而且绝大多数配套笼车搬运装卸是一种先进的装卸作业。在日本大多数升降平台应用在仓库中高站台运送叉车上下站用。所以说在国外应用升降平台是很普与的。
从国内情况来看，生产升降平台比国外起步晚．主要分二大类：一类是生产多节剪叉或液压升降平台。主要