拱棚保温被的卷放，难点在于下坡卷收和上坡铺展，解决方案原理为：
The difficulty of the rolling out of the thermal insulation quilt of the arch shed lies in the rolling up of the downhill and the spreading of the uphill. The solution principle is as follows:
下坡卷收：一台具有恒速功能的卷帘机带动保温被自卷，配合另一台具有自动变速功能的卷帘机带动牵引绳或带，做相应速度的释放。协调工作，相互制约，完成保温被的平稳下坡卷收。
Downhill rolling: one rolling machine with constant speed function drives the thermal insulation to be self rolled, and another rolling machine with automatic speed change function drives the traction rope or belt to release the corresponding speed. Coordinate the work, restrict each other, and complete the stable downhill rolling of insulation quilt.
上坡铺展反之，一台具有恒速功能的卷帘机带动保温被铺展，则另一台具有自动变速功能的卷帘机带动牵引绳或带，做相应速度的收拉。协调工作，相互制约，完成保温被的平稳上坡铺展。
On the contrary, if one rolling machine with constant speed function drives the thermal insulation to be spread, another rolling machine with automatic speed change function drives the traction rope or belt to do the corresponding speed retraction. Coordinate the work, restrict each other, and finish the stable uphill spreading of the insulation quilt.
另外，牵引绳或带的收放机构，设计有自动起落装置，以保证保温被能顺利越过棚顶。
In addition, the retracting and releasing mechanism of the traction rope or belt is designed with an automatic landing device to ensure that the thermal insulation quilt can smoothly cross the ceiling.
本技术方案中采用的专用卷帘机另外包含了双向自锁功能，因此保证了卷放过程中，任意位置可停放。本技术理论浅显易懂，菜农稍加学习，就可以自行安装使用。
The special roller shutter adopted in the technical scheme also includes two-way self-locking function, so it can be parked at any position during the rolling process. The technical theory is simple and easy to understand, and the vegetable farmers can install and use by themselves with a little study.