摘要为了将一长度约 6。5 米*宽度为 4。米*高度 2。5 米，重约 20 吨的 SF6 气体绝缘试 验变压器系统与 1000kV 及以下的 GIS 试品形成有效的口对口的对接。需要设计一个 能实现上下，前后，左右，共六个方向运动的升降平台。通过阅读参考文献，结合自 身实际对课题要求进行分析，选择剪叉式升降平台作为基础。将平台设计成三层的结 构，已达成前后左右运动的要求。86276

剪叉式升降平台作为一种平面升降机械，常用于抬升重量大的物体，在各领域都 被广泛的运用，比如用于装卸货物，在工程中抬升操作人员等。剪叉式升降平台结构 简单，举升能力强，运行平稳，噪音很小，便于操作，便于维护，并可在升降范围的 任意位置上停留，是一种理想合理的升降平台。本次设计为实现重物多自由度的运动， 将上平台分为三层。一二层之间装有液压缸和导轨。二三层也装有液压缸与导轨，与 上层导轨成垂直放置。

本次设计的驱动与控制均由液压系统实现，通过液压缸的动作完成重物所需移 动，再通过调速阀，溢流阀等液压控制阀来实现调速，保压，制动的功能。本次设计 主要对升降平台总体布局方案，各机构和部件的方案，主要控制方案进行设计，并确 定主要性能参数。

毕业论文关键字：剪叉式升降平台；上平台；液压系统

Abstract In order to be a length of about 6。5 meters * width of 4 meters * height of 2。5 meters, weighing about 20 tons of SF6 gas insulation test transformer system and 1000kV and the following GIS test products to form an effective mouth to mouth docking。Need to design a can achieve up and down, around, or so, a total of six movements of the lifting platform。Through reading reference literature, combined with its own actual requirements for the analysis of the subject, choose scissors type lifting platform as the foundation。 The platform is designed into three layers of structure, has reached the requirements of the left and right motion。

Shear fork lift platform as a kind of plane lifting machinery, commonly used in lifting the weight of large objects, in various fields are widely used, such as used for loading and unloading cargo, lifting operators in the project, etc。。 Shearing  fork type lifting platform has the advantages of simple structure, lifting capacity, smooth running, the noise is very small, easy to operate, easy to maintain and stay in any position on the lifting range, is a kind of ideal and reasonable lifting platform。

The design for the realization of heavy weights of the movement, the platform is pided into three layers。 A hydraulic cylinder and a guide rail are arranged between the one or two layers。 The two or three layer is also provided with a hydraulic cylinder and a guide rail, and the upper guide rail is vertically arranged。The design of drive and control are realized by the hydraulic system, through the action of the hydraulic cylinder to complete the weight needs to be moved, again through the control valve, relief valve, hydraulic control valve to achieve speed, holding pressure, brake function。

The design of the main lifting platform for the overall layout of the program, the various agencies and components of the program, the main control program design, and determine the main performance parameters。

Key words: shear fork lift platform; upper platform; hydraulic system

目 录

第一章 绪论 1

1。1 升降平台在生产生活中的作用和意义 1

1。2 升降机构在国内外的研究发展情况 1

1。3 各式升降平台的优缺点 2