设计描述：

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摘要
提升机是一种实现工程物料向上运输的机械，它是当代最为得力的输送设备之一，它广泛运用于矿山、码头、化工等各种场合，但是不同的工况下它对设备的要求是不同的
本文以食品加工业为背景，设计提升食品的机械。食品提升皮带机是在带式输送机的基础上发展起来的。食品提升皮带机与传统的带式输送机一样是以胶带、钢带、钢纤维带、塑料带和化纤带等作为传送物料和牵引工件的输送机械。其特点是承载物料的输送机也是传递动力的牵引件，这与其他输送机械有着显著的区别。本次设计的食品提升皮带机是一种小型的运输机械，其承载能力要求较小，相对于其他的带式输送机成本要求低，设计结构紧凑。
本设计从整体结构出发，对整个装置中的驱动部分和传动部分进行了设计与计算。其中在驱动装置的设计与计算中，本设计选择电机—减速器的装置来作为驱动设备；而在传动部分的设计中，本设计选择了同步带轮与驱动装置相连，从而传递动力。本文另外还对装置中的改向滚筒、压辊及机架部分进行了选择设计，同时对其他的辅助设备也做了必要的计算和选择。
本设计主要设计减速器的结构，确定了内部各传动齿轮以及轴的各主要参数，以及改向滚筒的设计，并对其工作原理作了详细分析。

关键词  减速器；改向滚筒；压轮；托辊

Abstract
Hoist is a progressive realization of the transport of materials engineering machinery, it is the most modern equipment capable of conveying one of its widely used mines, docks, chemical and other occasions, but a different condition of its equipment requirements are different The
    In this paper, food processing industry as the background, design enhance food machinery. Enhancing food in the belt conveyor belt machine is developed on the basis of. Food and upgrade the traditional belt machine, like a belt conveyor belt, strip, with steel fibers, plastics and chemical fibers with a transmission belt, and other materials and the delivery of mechanical traction workpiece. Its characteristics are carrying the material conveyor is also the change of power transmission parts, machinery and other transport has significant differences. The design of the food enhance belt machine is a small transport machinery, its carrying capacity requirements of small, relative to other low-cost requirements of the belt conveyor, compact design.
    The design of the overall structure of the entire device in the drive and drive some parts of the design and calculation. One driver in the design and calculation, the electrical design options - as a reducer of the device to drive equipment in the transmission part of the design, selected the design of the timing belt pulleys connected with the drive to transfer power . This paper was also installed in the bend of the drum, roll and rack some pressure to choose a design, while the other auxiliary equipment have also done the necessary calculations and choices.
    The main design reducer design the structure, determining the internal transmission gear and the axis of the main parameters, and bend the drum design, and the principle of detailed analysis.

Keywords: Reducer  Bend pulley  Pressing wheel  Roller
 
目       录

1绪论 1
1.1前言 1
1.1.1背景介绍 1
1.1.2运输机简介 1
1.1.3食品提升皮带机简介 5
1.2方案确定 6
1.3设计方案综述 7
2减速器结构的设计 8
2.1电动机的选择 8
2.1.1选择电动机类型和机构形式 8
2.1.2功率的计算 8
2.1.3电动机功率的选择 8
2.2确定传动装置的总传动比和分配传动比 10
2.2.1总传动比 10
2.2.2分配减速器的各级传动比 10
2.3计算传动装置的运动和动力参数 11
2.3.1各轴转速 11
2.3.2各轴的输入功率 11
2.3.3各轴的输入转矩 12
2.4减速器的结构设计 13
2.5传动零件的设计计算 13
2.5.1第一级齿轮传动的设计 13
2.5.2第二级齿轮传动的设计 19
2.5.3齿轮轴的校核 24
2.5.4中轴键的选择 27
2.6轴承的选择 28
2.6.1轴承的选择因素 28
2.6.2轴承的型号确定 29
2.6.3轴承校验 29
3间歇机构 32
3.1槽轮机构 32
3.1.1槽轮机构的组成及工作特点 32
3.1.2槽轮机构的类型及应用 32
3.1.3槽轮机构的运动系数及运动特性 33
3.2棘轮机构 33
4改向滚筒的设计 35
4.1改向滚筒的结构设计 35
4.2改向滚筒轴的强度校核 35
5改向压轮的设计 39
5.1改向压轮的结构设计 39
5.2设计方案的比较与选择 40
5.3输送带的跑偏处理 41
5.4拉紧装置 42
6托辊的设计 44
6.1托辊的类型 44
6.2托辊的设计计算 45
7食品提升皮带机的安装和操作维护 48
7.1启动和停机 48
7.2食品提升皮带机的维护 48
7.3食品提升皮带机的安装 48
结论 50
致谢 51
参考文献 52
附录 53