发布人：http://www.kdjlm.com 发布时间：2021-09-10 11:54:35
Most of the garage doors in the villa area are designed as standard lifting sectional sliding garage doors. During the up and down operation of the door body, the power to overcome the weight of the door plate is mainly balanced by the spring force of the balance system, and the motor plays a part of the lifting force and limiting role during the up and down traction.
1. Spring balance system: as one of the key components of garage door, the state of spring is very important. When the garage door is closed, the spring remains tightened, that is, the so-called 100% working state; When the garage door is opened, the force of the spring is released. Because many garage doors have not been occupied for a year or even a few years after installation, the garage door is still closed for a long time, the spring has been in 100% working state, and there is no chance to release and rest, fatigue and weakness will occur. The longer the continuous working time is, the greater the loss of the spring will be, just like a continuously discharged battery, which will soon run out of power. The number of spring loads designed by the spring factory is one year under normal use. The service life is also different according to the use frequency.
2. Door opener: in case of fatigue and weakness of the spring, the garage door can be opened and closed normally for a period of time, so that the user mistakenly thinks that everything of the garage door is normal and there is no problem. This is because the door opener bears most of the weight originally borne by the spring. Basically, the door is opened and closed by the hard pull of the motor, which has great wear on the motor gear. When the gear of the motor is flattened or damaged, the motor will not pull the door body, resulting in the door opening not in place. When the door is closed, the door body sinks rapidly, and even the door body may fall.
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