车库门安装中非常核心、也非常容易出问题的环节，就是弹簧平衡系统的安装。业内常说，扭簧是平衡系统中的重中之重，门上的扭簧就像人的心脏，作用仅次于电机。一套好的扭簧对于整个车库门十分关键。

The most critical and problematic part of garage door installation is the installation of the spring balance system. It is often said in the industry that a torsion spring is the most important component in a balancing system, and the torsion spring on a door is like a human heart, second only to an electric motor in function. A good set of torsion springs is crucial for the entire garage door.

平衡系统的作用：利用弹簧的弹性力来平衡门扇重力，以减轻门扇运行的阻力，并提高系统运行时的可靠性和安全性。没有平衡系统，电机要承受门体的全部重量，不仅耗电大，还会加速电机损坏。平衡系统安装不当，门体升降困难、噪音大、弹簧断裂风险高。

The function of the balancing system is to use the elastic force of the spring to balance the gravity of the door leaf, reduce the resistance of the door leaf operation, and improve the reliability and safety of the system during operation. Without a balancing system, the motor has to bear the entire weight of the door, which not only consumes a lot of electricity but also accelerates motor damage. Improper installation of the balance system results in difficulty in lifting and lowering the door, high noise levels, and a high risk of spring breakage.

安装步骤：在门顶两侧固定吊架角铁。将弹簧及调整法兰、固定法兰、中间支架、两侧钢丝轮、两侧轴承支架套上钢管后，把整个平衡系统擎起。将轴承支架固定在吊架角铁上，并在墙壁上固定中间支架。为避免安装电机时出现障碍，中间支架位置应偏左100mm。

Installation steps: Fix the hanger angle iron on both sides of the door top. After installing steel pipes on the spring, adjusting flange, fixing flange, middle bracket, steel wire wheels on both sides, and bearing brackets on both sides, lift the entire balance system. Fix the bearing bracket onto the hanger angle iron and secure the middle bracket onto the wall. To avoid obstacles during motor installation, the middle bracket should be positioned 100mm to the left.

弹簧安装的关键细节：安装弹簧时建议注意弹力的方向，不能反向。绳轮安装时建议分清左右，根据门体的宽度将其固定在中轴上。对于完全垂直提升的车库门，需要使用塔轮——因为扭簧始终承受着同一重量的门体，只有靠改变轮径的大小（即改变扭矩大小），才能使扭簧扭力和门重平衡。

Key details of spring installation: When installing the spring, it is necessary to pay attention to the direction of the elastic force and not reverse it. When installing the pulley, it is necessary to distinguish between left and right, and fix it on the central axis according to the width of the door body. For garage doors that are completely vertically lifted, tower wheels are required - because the torsion spring always bears the same weight on the door body, only by changing the size of the wheel diameter (i.e. changing the torque) can the torsion of the torsion spring and the weight of the door be balanced.

不同安装方式：翻板车库门有三种安装方式——标准提升、高提升和超低空安装。超低空安装方式指扭簧平衡系统放在车库后侧的上滑道车库门的安装方式，主要适用于门楣高度太小、洞口高度较小，其他两类安装方式无法实现的场合。

Different installation methods: There are three installation methods for flip garage doors - standard lifting, high lifting, and ultra-low altitude installation. The ultra-low altitude installation method refers to the installation method of placing the torsion spring balance system on the upper sliding track garage door at the back of the garage. It is mainly suitable for situations where the door lintel height is too small, the opening height is too small, and the other two installation methods cannot be achieved.

安装后的检查：安装完成后务必请安装人员对门体进行检查。检查内容包括：弹簧张力是否合适、门体升降是否平衡、运行时有无异响、安全装置是否灵敏。

Inspection after installation: After installation, it is necessary to have the installation personnel inspect the door body. The inspection includes: whether the spring tension is appropriate, whether the door lifting is balanced, whether there is no abnormal noise during operation, and whether the safety device is sensitive.

日常维护提醒：弹簧是易损件，使用频率高时建议每2-3年检查一次弹簧状态。发现弹簧有裂纹、生锈严重或张力明显下降，应及时更换。切勿自行调整弹簧张力——弹簧在释放时具有出色大杀伤力，建议由专业人员操作。

Daily maintenance reminder: Springs are vulnerable parts, and it is recommended to check their condition every 2-3 years when used frequently. If cracks, severe rust, or a significant decrease in tension are found in the spring, it should be replaced in a timely manner. Do not adjust the spring tension by yourself - springs have great destructive power when released and must be operated by professionals.

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