How does the Double Spring Slack Adjuster ensure tension balance in garage door applications?

The Double Spring Slack Adjuster adopts a symmetrically distributed double torsion spring structure, and the two sets of springs are coupled to torque through a coaxial torsion tube. When the garage door is closed, the spring is in the maximum torque storage state, and the symmetrical layout of the double springs makes the weight of the door body evenly distributed on the two sides of the track. When the door body is started, the two sets of springs release potential energy synchronously, and the symmetry of the torque transmission path offsets the unilateral stress concentration phenomenon. This design keeps the lifting force on both sides of the door panel in a dynamic balance during the rising process, avoiding the door body tilting or track deviation.

The adjustment mechanism includes three key components: winding cone, positioning locking device and incremental scale system. During operation, the springs on both sides are wound equally through a special winding tool, and each increase/decrease in winding amount must be performed synchronously on the two sets of springs. The precisely designed conical winding disk ensures that the tension increment generated by each winding is consistent, and cooperates with the torque balancing algorithm to achieve precise tension balancing. After calibration, the locking mechanism fixes the end of the spring to the central torque tube to form a stable double spring linkage system.

The system has a built-in asymmetric load compensation mechanism. When the weight distribution of the door changes due to wear or deformation, the tension on both sides can be redistributed through the fine-tuning system. The specially designed clutch device allows the single-side spring to be fine-tuned independently by ±1/4 turn, and the static balance of the door body is monitored by the force sensor to ensure that the double spring system always maintains a tension difference tolerance range of ±5%. This elastic adjustment capability greatly improves the system's adaptability to mechanical losses during long-term use.

In the daily operation and maintenance of the Double Spring Slack Adjuster, the standardized operating procedures must be strictly followed to ensure the stable operation of the system. During the operation, the springs on both sides must be adjusted synchronously using equal-length winding rods. It is strictly forbidden to adjust the single-side spring separately to prevent track offset or component wear due to unilateral tension imbalance. It is recommended to perform tension balance detection every quarter. By manually lifting the garage door to a height of 1.5 meters and observing its static state, the dynamic balance performance of the double spring system can be intuitively judged.