Springs

Springs are those mechanical devices which absorbs energy when a load is applied on it. It means it contracts when we apply a load on it and when the load is removed it comes to its original shape. So that  springs have very important role in mechanical industries.

There are several types of mechanical springs they are:

• compression spring, 
• extension spring, 
• torsion spring, 
• constant force spring, and
• belleville spring.

Compression springs are mechanical springs that oppose compression forces. It squeezes together to absorb the force and expands once the load has been removed. Compression springs are used in car suspensions.

compression springs

Extension springs are mechanical springs that stretch beyond their rest positions when a load is applied. After the load is removed, they contract back to their original size. Extension springs are used as screen door hinge or garage door hinge.

extension springs

Torsion springs are mechanical springs that rotate around an axis to create a load. As the load is released, the spring rotates back to its starting position. This type of spring is usually used in mouse traps.

torsion springs

A type of spring that releases a controlled amount of energy, instead of the quick burst associated with torsion springs, is the constant force spring. it is made of a band of steel that is wrapped around itself in the shape of a spiral. The mechanical springs that are found in clocks are typically constant force springs. they are also found in toy cars.

constant force springs

The belleville spring, also known as the belleville washer, is a flat, disk-shaped spring with a hole in the center. It is typically used with a bolt to maintain pretension, which reduces the stress on the bolt when a load is applied. It is generally used to support lager loads.

belleville spring