The Working Principle
- It is important to note that the mechanism involved in opening and closing of garage doors is not new. This operation employs an age-old mechanism in which an upward force is used to counterbalance the weight of the door.
- Counter weights were popular in the past to generate this upward force to open doors. However, springs have since proved to be better candidates by far and subsequently replaced counter weights in the counterbalance system.
- The working principle is fairly simple. When a spring is stretched (for instance when the door is being closed), it deforms elastically and stores a potential energy equal to the stretching force (the weight of the garage door) . When the stretching force is removed, the potential energy stored in the spring is released to lift up the door.
Types of Garage Door Springs
- The two types of spring commonly used in garage doors are the torsion springs and the extension springs, both of which adopt the working principle highlighted above.
- They are mounted on either side of the door opening and attached to cables whose other ends are tied to the bottom corners of the garage doors. The only notable difference between the two types of springs is that while the extension springs stretch and recoil during operation, the torsion springs wind and unwind.
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