滚轮式脚踏式液压升降平台车设计

滚轮式脚踏式液压升降平台车设计

摘要:本课题是为工厂车间等场所搬运货物而设计的脚踏液压升降台，是工业生产的必然产物。滚轮式脚踏式液压升降平台车由优质钢材、液压泵、液压缸、油管、脚轮等有机组合而成，它可以代替人手的繁重劳动，显著减轻工人的劳动强度，改善劳动条件，提高劳动生产率和自动化水平。

本文所介绍的液压升降台最大载重量是500kg，该升降台由两部分组成：机构本体和液压系统。升降台升降的操作控制是由一套液压系统和液压缸来完成的，而组合而成的液压系统全部放在液压油泵中。液压泵和液压缸都采用标准件，其中液压缸为单作用液压缸，液压泵为脚踏式，本文首先通过支撑铰架的受力分析详细阐述了要提升起货物，液压缸所需承受的最大压力。接着以之作为根据说明液压泵、液压缸等标准件的选用及型号，并介绍液压泵内部相关液压系统原理以及对液压泵储油量进行核算。此外在强度校核方面，主要通过材料力学知识对铰架以及液压缸作用两端的轴进行强度校核，最后对本升降台进行重量和成本核算。本毕业设计借鉴了大量的资料，采用了许多国家标准，充分的吸收了各行业有关专家的宝贵经验。

关键词：脚踏式升降台液压缸液压泵液压系统标准件成本核算

指导老师签名:

Roller-type hydraulic lifting platform

pedal car design

Abstract ：This issue is roller-type hydraulic lifting platform pedal car design for places such as factory and machine shop for cargo handling , it is a inevitable product in industrial production.This machine is posed by high-quality steel ,hydraulic cylinder ，hydraulic pump，pipeline, casters and so on.It can replace the heavy manual labor，significantly reduce labor intensity and improve working conditions and raise the level of labor productivity and automation.

The biggest load of this snorkel described in this article is 500kg and the platform consists of two parts: body and the hydraulic system lift .The operation and control of the snorkel are completed by a set of hydraulic systems and hydraulic cylinders，also the combination of all of the hydraulic system are stored in the hydraulic pump .Both hydraulic pumps and hydraulic cylinders are standard, the former is a single hydraulic cylinder and the later is Pedal type。firstly，This article expound the required maximum pressure the hydraulic cylinder bear that need to up the goods through the support of the hinge force analysis .according to this，the standard and model choice of the hydraulic pump, hydraulic cylinde are determined，And it describes relevant hydraulic system principles and account oil volume of the hydraulic pump.In addition, this paper check the strength of the hinge frame and the axes at both ends of the Hydraulic cylinder by mainly using the mechanics of materials knowledge ，Finally, check the weight and cost of this lifting platform .This Graduation Project have refer from a large amount of information and national standards, it fully absorbed the valuable experience of experts in all walks of life.

Key word:Pedal-style platform hydraulic pump hydraulic cylinder hydraulic system standard parts cost accounting

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目录

1 绪论

1.1 课题研究的目的及意义 (1)

1.1.1滚轮式脚踏式液压升降平台车设计的目的 (1)

1.1.2滚轮式脚踏式液压升降平台车设计的意义 (1)

1.2 国内外液压技术研究现状及发展趋势 (1)

1.2.1研究现状 (1)

1.2.2发展趋势 ............................................................................................................................... . (2)

1.3 本课题研究内容 (2)

2 滚轮式脚踏式液压升降平台车的总计机设

2.1 总体方案的分析比较和确定 (3)

2.2 液压升降平台车的结构及运动原理 (4)

3 升降台尺寸初步分析计算

3.1 升降台高度的计算 (7)

3.2 相关角度的计算 (7)

3.3 液压缸作用结构图分析 (8)

4 升降台受力及力矩分析

4.1 整体受力分析图 (10)

4.2 外铰架受力分析图 (10)

4.3 内铰架受力分析图 (10)

4.4 力和力矩的分析计算 (11)

4.4.1铰架上端铰支受力 (11)

4.4.2整体受力分析计算 (12)

4.4.3内、外铰架单独受力分析 (12)

4.4.4力矩平衡分析 (12)

4.5 液压缸受力分析 (13)

4.5.1液压缸受力公式的导出 (13)

4.5.2液压缸最大受力时数值及角度计算 (14)

5 液压系统的分析

5.1 受载分析 (16)

5.2 液压系统方案设计 (16)