自动门
自动门:大型三翼旋转门主要结构参数设计计算
发布时间:2013/2/4
大型三翼旋转门主要结构参数设计计算
   当设计三翼旋转门时,在已定的门内径、立柱型材尺寸、展台型材尺
  三翼旋转门外形尺寸计算图
寸和门扇型材尺寸的情况下,可计算出三翼旋
转门的外形尺寸。当为厂家规格门时,按规格
尺寸加工;如不是规格尺寸时,就需重新计
算。外形尺寸按以下方法确定。
    已给定的尺寸为≯,即门的内径,要求出
的尺寸是如图所示的展台一角长度B和门扇宽
度G。由于三翼旋转门的门扇尺寸是可以折叠
的,门扇在折叠后,门扇的长度加上门扇毛刷
的长度之和小于门扇转轴A点到A点的长度。
    已知门内径≯,门扇与立柱间的间隙为
30mm,门扇与展台一角的间隙为30mm.展
台一角与门扇转轴中心点A(闭门器中心)的
距离为75mm。
    设门扇转轴A点到A点的距离与门扇从
折叠点A算起的宽度之差为A。因此,可列
出以下两方程求B和G.即
    2×(B+75)cos300=G- (75-30)+
    B+G+30×2一声/2    'A)    c4.,,
式中  B-展台一角长度,mm 5
    G-门扇宽度.mm;
    }一旋转门内径.mm l
    A--缀验常数,考虑到门扇上的毛届Ⅱ长度及折叠后要留有余量,一般取
    A一134mm。
    经整理后得
    1. 732B+40.9-G
    B+G—至一60
最后求得
    B= 5{64-36.9(mm)    (4.2)
    G-0.317+- 23.1  (mm)    (4.3)
    门进出口宽度    W -(声+C)sin300 - Kcos300    (4.4)
式中妒一门内径,mm;
    C-立柱横截面长度,mm≯
    K-立柱横截面宽度一半与防碰橡胶高度之和,mm。
4.1.1.2  大型四翼旋转门主要结构参数设计计算
    如图4.2所示四翼旋转门,在保证门折叠后不碰到另一扇门又不超出展台尺寸,并且
满足已知内径的情况下,应可以列出以下两方程
式,从方程式中可求出展台一角长度B和门扇宽
度G。
    已知门内径声,门扇与主立柱间的间隙为
30mm,门扇与展台一角的间隙为30mm.展台一
角与门扇转轴中心点A(闭门器中心)的距离
为75mm。
    列方程求B和G,即
    ‘B+75) cos450×2-G一‘75—30’+Al c4.5,
    B+G+30×2_詈    J
式中符号意义与式(3.62)中意义相同;A=134。
    整理后得
    (B+75)×1- 414 - G+89
B+G—0. 54- 60
    图4.2  四翼旋转门外形尺寸计算图
解方程后可求得
    B -0.  207+- 32
    G—0. 293+- 28
(4.6)
(4.7)
    九的进出口宽度
    T/V -(r6+C) sin450 -K cos450    (4.8)
式中符号意义同式(3.65)。

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