大家都知道在安装卷帘门的时候，经常都用到膨胀螺丝，但是要想把膨胀螺丝固定好，却不是一件简单的事情。济南富强门业从事安装卷帘门的实践中，积累了经验，在这里和朋友们一块分享一下。
We all know that the expansion screw is often used when installing the rolling shutter door, but it is not a simple thing to fix the expansion screw well. Jinan Fuqiang door industry engaged in the installation of rolling shutter door practice, accumulated experience, here and friends to share.
普通卷帘门，在门帘包括卷轴包箱和墙面的结合处用的着膨胀螺丝，固定轨道的时候也用得着膨胀螺丝，电动门在电动卷轴两侧的轮盘上用得着膨胀螺丝，还有包箱的两侧方盘和电动门轨道也用得着膨胀螺丝等等。
For ordinary rolling shutter doors, expansion screws are used at the joint of the curtain, the box and the wall. The expansion screws are also used for fixing the track. The expansion screws are used for the wheel discs on both sides of the electric reel for the electric doors. The expansion screws are also used for the square plates on both sides of the bag box and the electric door track.


在用电锤打膨胀螺丝孔的时候，因为墙里面的构造组成不同，在使用同一号膨胀螺丝的时候，把膨胀螺丝螺母拧紧到高限，其膨胀力大小不同，遇到松软的构造成分，膨胀力度会达不到要求，遇到这样的情况，也需要调整大一些的膨胀螺丝去配备，具体配多大的，要看能不能将螺丝拧紧到高限能否达到力度要求为标准。
When using an electric hammer to punch the expansion screw hole, because of the different structural composition in the wall, when using the same expansion screw, the expansion screw nut is tightened to the high limit, and the expansion force is different. In case of soft structural components, the expansion strength will not meet the requirements. In such a case, it is also necessary to adjust the larger expansion screw to equip, and how large the expansion screw is, It depends on whether the screw can be tightened to the high limit and whether it can meet the strength requirements.
但是还会遇到特殊情况，就是用再大的膨胀螺丝也达不到要求咋办，我们会用适当的金属螺丝杆将墙穿透，固定面的背面，用合适的金属杆和穿透墙的金属杆焊接结实，再去固定墙正面的其他构件。只有这样才能保证卷帘门安装结实，坚固耐用，叫客户们用的舒心放心。
But there will be special cases, even if the expansion screw can not meet the requirements. We will use the appropriate metal screw rod to penetrate the wall, fix the back of the fixed surface, weld the appropriate metal rod and the metal rod penetrating the wall firmly, and then fix the other components on the front of the wall. Only in this way can we ensure that the rolling shutter door is installed firmly and durable, so that customers can feel comfortable and at ease.