自动门
成都自动门:自动旋转门驱动装置结构设计
发布时间:2013/2/4

  成都自动门讯:

 三/四翼旋转门的驱动装置可以采用多种方案,一般可采用如下几种驱动方案:

    (1)减速电机直接驱动的方案。
    (2)减速电机与从动齿轮传动机构驱动方案。
    (3)减速电机与从动皮带传动机构驱动方案。
    (4)减速电机与从动链轮传动机构驱动方案。
    减速电机直接驱动方案的主要优点是结构简单,简化了从动传动机构零件的加工安装
程序。但其主要问题是:在大型三/四翼旋转门中由于其功率相对较大,旋转门正常转速
较低,这样减速电机昀速比过大,减速电机重量较大、尺寸较大、价格升高,同时安装使
用不方便,一般不采用此方案。
    减速电机与从动齿轮传动机构驱动方案的优点是可减小减速电机的速比,齿轮传动平
稳、噪音小。但其主要问题是:齿轮传动对齿轮中心距要求较高、安装要求高、加工经费
较链轮高、中心距不宜太大,否则齿轮直径加大、造价升高。对于要求速比不严格的旋转
门不是特别合适。
    关于减速电机与从动皮带传动驱动方案,由于皮带传动适宜布置在高速级、不适宜布
置在低速级,而且皮带传动尺寸大、传动比不准确,不适合用在旋转门的驱动装置中。
    最后采用了减速电机与从动链轮传动的驱动装置,它可以满足帽头要求较低的旋转
门。减速电机的安装位置灵活,链轮传动可满足转速较准确、不丢转、中心距变化范围较
大,并且有一定的过载能力,刚好适于低速级传动。
    三/四冀旋转门的结构图如图4. 14  (a)所示。减速电机装在减速机底板(19)上,
减速机底板(19)固定在梁架上,减速电机输出轴装有小链轮(20),通过链条与主链轮
(4)相连,通过减速使中心轴(11)在要求的转速下旋转,带动展箱和旋转部件旋转。中
心轴靠外环(13)、内环(12)、上压环(9)和下环(8)用螺钉(10)与主键轮固定,靠
拧紧螺钉后内环和外环与轴及主链轮间的摩擦力主链轮带动中心轴旋转。主链轮与中心连
接方法也可以采用图4. 14 (b)所示的用圆螺母连接方案。
    中心轴装在轴承(15)和轴承(16)上,轴承(15)是径向轴承,装在轴承座(7)
内,轴承(16)是止推轴承,两轴承都装在主底板(18)上,主底板.(18)也固定在框架
的粱架上,用压紧螺母(17)最后拧紧,使止推轴承(16)紧紧压在主底板(18)上。垫
块(14)用于固定主链轮的轴向位置。
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