The top of the door panel of the flap garage door cannot flip normally on the wall. If it is in the installation process, one reason may be that the bending rail amplitude is too small, causing the door panel to top on the ceiling, and the other is that there are obstacles on the wall to block the movement of the movable door panel; Third, the small bend of the double track is not installed correctly. Check whether the installation of the double track is correct. You can see whether the small bend is just as high as the door plate on the big bend. If the garage door that has been used for a period of time is jammed, you can check whether there is foreign matter stuck inside the guide rail, or whether the screws inside the rail are loose, and check whether the wheel is derailed. If the door panel is jammed, it is recommended to suspend the use of remote electric door opening to avoid damage to the motor.

翻板車庫門開啟以后，鋼絲繩是否還在受力的問題。翻板門開啟后，活動門板懸掛在天花板下方的軌道上，此時門體的重量由軌道承擔，所以這時候鋼絲繩是基本不受力的，但是有預緊力在拉著。翻板門開啟以后，因為活動門板的重量基本都在軌道上，所以軌道的安裝需要進行加固。特別是彎直軌經過的地方有落水管和其他障礙物遮擋，或者直接是懸空的，都可以用三角鋼打吊軌進行固定。

Whether the steel wire rope is still under stress after the flap garage door is opened. After the flap door is opened, the movable door panel is suspended on the track under the ceiling. At this time, the weight of the door body is borne by the track, so at this time, the steel wire rope is basically unstressed, but there is a preload pulling. After the flap door is opened, because the weight of the movable door panel is basically on the track, the installation of the track needs to be strengthened. In particular, the place where the curved straight rail passes through is covered by downpipes and other obstacles, or directly suspended, can be fixed by using triangular steel to hit the lifting rail.

這也是為什么我們之前總在講車庫內部障礙物的原因。安裝車庫門，前提條件就是要求門洞兩側和頂部都得有承重的受力點，這樣才能承擔得起車庫門開啟以后的重量。如果是自建房，車庫門頂部用的彩鋼瓦，彩鋼瓦不具備承重功能，屋頂下面又沒有承重的橫梁，這樣的車庫就沒辦法安裝翻板車庫門，這種情況下可以選擇在門口安裝卷簾門。

This is why we always talk about obstacles in the garage before. The precondition for installing the garage door is that there must be load-bearing points on both sides and top of the door opening, so that the weight after the garage door is opened can be borne. If it is a self-built house, the color steel tile used on the top of the garage door does not have the load-bearing function, and there is no load-bearing beam under the roof, so the garage cannot install the flap garage door. In this case, you can choose to install the rolling shutter door at the door.