卷帘门升降过程中卡顿​

Stuck during the lifting process of the rolling shutter door

门体变形：卷帘门在使用过程中，可能因受到外力撞击，如车辆碰撞、重物砸落等，导致门体局部变形。变形后的门体在升降时，与轨道之间的摩擦力增大，从而出现卡顿现象。例如，济南某停车场入口的卷帘门，被一辆超高车辆刮蹭后，门体出现弯曲，此后升降过程中频繁卡顿，维修人员对门体进行校正修复后，卡顿问题消失。​

Door deformation: During use, rolling shutter doors may experience local deformation due to external impacts such as vehicle collisions, heavy objects falling, etc. When the deformed door body rises and falls, the friction between it and the track increases, resulting in a jamming phenomenon. For example, the rolling shutter door at the entrance of a parking lot in Jinan was scraped by a super tall vehicle, causing the door to bend. Subsequently, it frequently froze during the lifting process. After the maintenance personnel corrected and repaired the door, the problem disappeared. ​

滚轮磨损：卷帘门通过滚轮在轨道内滚动实现升降，滚轮长期使用会出现磨损。滚轮磨损不均匀或磨损严重时，会导致门体运行不稳定，出现卡顿。在济南某仓库，卷帘门使用一段时间后，升降时发出异常声响且伴有卡顿，检查发现是部分滚轮磨损过度，更换滚轮后，卷帘门运行恢复平稳。​

Roller wear: The rolling shutter door is lifted and lowered by rolling the roller in the track, and the roller will wear out after long-term use. When the roller wear is uneven or severe, it can cause unstable operation of the door body and result in jamming. In a warehouse in Jinan, after using the rolling shutter door for a period of time, there was abnormal noise and jamming during lifting. Upon inspection, it was found that some of the rollers were excessively worn. After replacing the rollers, the rolling shutter door resumed smooth operation. ​

链条或皮带问题：对于采用链条或皮带传动的卷帘门，链条松动、脱落或皮带老化、断裂，都会影响门体的正常升降，造成卡顿。链条松动可能是由于长时间使用后，链条伸长，未及时调整张紧度。皮带老化则与使用环境和使用时长有关，如长期处于高温、潮湿环境，会加速皮带老化。在济南某工厂车间的卷帘门，因链条松动，导致门体升降卡顿，重新调整链条张紧度后，卷帘门恢复正常运行。​

Chain or belt issues: For roller shutter doors that use chain or belt transmission, loose or detached chains or aged or broken belts can affect the normal lifting and lowering of the door body, causing jamming. The loosening of the chain may be due to the elongation of the chain after prolonged use and failure to adjust the tension in a timely manner. Belt aging is related to the usage environment and duration. Prolonged exposure to high temperatures and humidity can accelerate belt aging. In a workshop of a factory in Jinan, the rolling shutter door experienced a delay in lifting due to a loose chain. After readjusting the tension of the chain, the rolling shutter door resumed normal operation. ​

卷帘门关闭不严​

The rolling shutter door is not tightly closed

限位器故障：卷帘门的限位器用于控制门体的升降高度，当限位器出现故障，如限位开关损坏、限位位置调整不当等，会使门体无法准确停在预定位置，导致关闭不严。例如，济南某写字楼的卷帘门，在维修后出现关闭不严的情况，经检查是维修人员在安装过程中未正确调整限位器位置，重新校准限位器后，卷帘门关闭正常。​

Limit device malfunction: The limit device of the rolling shutter door is used to control the lifting height of the door body. When the limit device malfunctions, such as damage to the limit switch or improper adjustment of the limit position, it will prevent the door body from accurately stopping at the predetermined position, resulting in loose closing. For example, in an office building in Jinan, the rolling shutter door did not close tightly after maintenance. After inspection, it was found that the maintenance personnel did not adjust the position of the limiter correctly during installation. After recalibrating the limiter, the rolling shutter door closed normally. ​

门体密封胶条老化：卷帘门的密封胶条位于门体与门框接触处，起到密封和缓冲作用。密封胶条长期使用，会因老化、变形而失去弹性，无法紧密贴合门框，导致关闭不严。在济南某，因卷帘门密封胶条老化，冬季时室内温度明显下降，更换密封胶条后，有效解决了关闭不严和保温问题。​

Aging of door sealant strip: The sealant strip of the rolling shutter door is located at the contact between the door body and the door frame, playing a sealing and buffering role. Long term use of sealing strips can cause them to lose elasticity due to aging and deformation, making it difficult to tightly adhere to door frames and resulting in loose closure. At a supermarket in Jinan, due to the aging of the sealing strip of the rolling shutter door, the indoor temperature significantly decreased in winter. After replacing the sealing strip, the problems of loose closure and insulation were effectively solved. ​

轨道内有异物：除了影响门体升降，轨道内的异物还可能导致门体关闭时无法完全到位。例如，轨道内的小石子等异物，会阻碍门体下滑底部，造成关闭不严。在济南某店铺，发现卷帘门关闭不严，检查轨道后清理出几颗小石子，再次关闭卷帘门时，问题解决。

There are foreign objects in the track: In addition to affecting the lifting and lowering of the door, foreign objects in the track may also cause the door to not be fully in place when closed. For example, small stones and other foreign objects inside the track can hinder the door from sliding down to the bottom, causing it to not close tightly. At a store in Jinan, it was found that the rolling shutter door was not tightly closed. After checking the track, several small stones were cleared out. When the rolling shutter door was closed again, the problem was solved.

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