机械专业毕业设计---小型活动式起重提升机的总体结构设计

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1、 小型活动式起重提升机的总体结构设计 摘要：提升机是大型固定机械之一,主要用于各种重物的升降和输送.小型提升机在日 常生活中也起着重要的作用。提升机的动力来源选择了微型电动葫芦，由电动机和减 速器以及滚筒三部分成,各部分之间分别由联轴器联接。电动机是动力源,减速器是传 动系统,滚筒为执行和控制部分,其中以减速器最为重要。它采用准平行环面蜗杆。这 种蜗杆不需要修形就能达到直廓环面蜗。杆修形的效果,而且瞬时接触线和相对运动 速度方向夹角稳定,接近 90 度;蜗齿面是用铲背滚刀加工而成,因此蜗轮齿面接触面大, 质量稳定。同时参加啮合的齿轮齿数多,蜗轮齿面无脊线,传递运动时不会产生干涉。 因此,这种蜗

2、杆传动承载功率大,动压油涵稳定传动、噪声低、平衡温度低等特征。具 有良好的实用价值和经济价值。 关键词：活动式；提升机 The design of small-scale and movable hoist Abstract:The lifting machine is one of the large-scale regular machinery ,sed in the rise or fall and transport of various kinds of heavy objects mainly. The small-scale lifting machine plays an i

3、mportant role too in daily life. The lifting machine is made up of motor , decelerator and three parts of cylinder , is linked by the shaft coupling respectively between every part. The motor is the power source , the decelerator is a transmission, the cylinder , in order to carry out and control so

4、me, among them the design of the decelerator is the most important. It adopts the worm the accurate parallel ring developed . This kind of worm does not need to repair the shape to reach the worm the wide ring directly and repair the result of the shape , and is exposed to the line and relative motion tempo direction contained angle stability instantaneously , is close to 90 degrees; Carry the hobbing cutter and process with shovels but succeed the teeth of a cogwheel of snail, so contact the s