带式输送机的输送带产生跑偏的主要原因是什么 如何防止和纠正输送带的跑偏

2025-02-27 20:24:04
推荐回答(2个)
回答(1):

【输送机厂家上海永延机械】为您解答。带式输送机输送带跑偏的规律是:当滚筒旋转轴线与输送带运行方向垂直时,输送带向紧边跑,即输送带向滚筒直径大的方向跑;当滚筒或托辊旋转轴线与输送带运行方向不垂直时,输送带向滚筒或托辊先接触的那边跑。

  1、皮带输送机输送带跑偏的原因
  (1)设备制造质量
  ①传动滚筒和改向滚筒外圆有较大圆柱度误差;②传动架和改向架的刚性差,有较大变形;③托辊转动不灵活,使输送带两侧阻力不等。
  (2)安装质量问题
  ①传动滚筒和改向滚筒轴线与皮带输送机的中心线不垂直;②各托辊轴线与皮带输送机中心线不垂直;③装载点上导料挡板安装不当,致使输送带两侧承受力不均;④ 卸载点上的卸料器安装不当,使输送带的承载面上压力不均。
  (3)输送带本身存在的缺陷,也会引起跑偏
  ①输送带制造质量差,两边边缘的长度不一致,输送带本身因呈孤线状,因此就不能保证平直;②输送带端部切口与输送带中心线不垂直,造成受力不均;③对钢丝绳芯带,在制造中由于各钢丝绳芯受力不均,在运转中就可能发生跑偏。
  2、防偏的主要途径
  (1)在设计上控制传送带跑偏
  在设计上尽量不采用单侧卸料的犁式卸料器,输送粘性物料采用有效的输送带清扫措施,保证输送带承载面的清洁。另外,控制输送带的跑偏,不能单独寄希望于调心托辊,过多的调心托辊会因这些保护装置的经常动作而降低运转的可靠性。一般来说,只要在装载点和机架中部各装一对调心托辊即可。
  (2)提高安装质量
  ①提高机架的安装质量。在安装皮带输送机时,头架与尾架之间的中心线偏差应严格控制,小于100m的输送机中心线偏差应控制在30mm以内。安装中间架时.应注意测定相邻两组托辊支架的螺孔中心对角线差,一般最大允许值5mm。机架横向水平倾斜偏差一般应控制在±2mm。
  ②保证滚筒的水平度及其轴线与机架中心线的垂直度。驱动滚筒(包括改向滚筒,尾部滚筒)水平度可用水平仪测量,钢面滚筒可以直接测量滚筒表面。若是胶面滚筒应测量筒轴。安装质量好的滚筒不平度一般在0.65 mm/m 以下。此外,还应注意调整供料口位置,防止给料不正,避免物料在输送带上偏载;保证输送带接头后的直线度;调整导料槽两侧橡胶槽的位置,使其对输送带产生的阻力近似相等。
  3、如何纠正跑偏
  皮带输送机实际使用中,由于各种情况的变化,仍可能出现跑偏,输送带跑偏的规律是:当滚筒旋转轴线与输送带运行方向垂直时,输送带向紧边跑,即输送带向滚筒直径大的方向跑;当滚筒或托辊旋转轴线与输送带运行方向不垂直时,输送带向滚筒或托辊先接触的那边跑。
  掌握好了这一规律,现场中通过调整尾部滚筒及托辊轴线与输送带纵向中心线间夹角来纠正跑偏,效果明显,输送机严重跑偏的部位大多出现在回程输送带上,即使承载面托辊段输送带出现跑偏,也可调整回程托辊来消除跑偏,调整时,每调整一次以后都要让输送带运行几圈才能决定是否需要再调整,同时,每次调整量不宜过大。更多输送带防跑偏方法请参看http://www.yongyanssjx.com

回答(2):

有全自动液压纠偏机

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