types leaf spring ppt

Different Types of Leaf Springs
Leaf spring is a simple form of spring used for suspension in wheeled vehicles. They are also referred to as laminated, semi-elleptical spring, carriage springs, cart spring, or helper spring.In mid 1970's leaf springs were very common in automobiles. At present, most of the automobiles are designed using oil springs, gas springs, or air suspension. They are now used in heavy vehicles such as trucks and cars. The reason that leaf springs are still used in heavy vehicles is that they have the advantage of spreading the load uniformly over the vehicle chassis, whereas coil springs transfer it to only a single point.

Leaf springs are very simple and are not fancy like the other springs that are currently available. They have slightly curved, long and narrow plates fixed to the frame of a trailer that are placed above or below the trailer's axle. They look similar to that of a bow in archery without the string.

There are two types of leaf springs,monoleaf springs and multileaf springs. The monoleaf spring or single-leaf springs consist of only one plate of spring steel. These are normally thick in the middle and taper to the end, and they don't typically offer too much strength and suspension for heavy vehicles. On the other hand multileaf springs consists of several leaf springs with varying length placed on top of each other. The shorter plates are placed at the bottom and the longer plates are placed at the top. They have the same curved shape which have thinner edges and are thicker in the middle.

There are two different leaf spring based on the springs ends, double-eye leaf springs and open-eye leaf springs. On double-eye leaf springs the top plate is the longest and has both ends curved like a circle. The ends of the double-eye leaf springs make two holes, which can be connected to the bottom of a trailer's frame. Open-eye leaf springs have only one hole. The other end of an open eye leaf spring usually has a hook end or a flat end.

A leaf spring is a simple type of suspension spring commonly used in vehicles. This type of spring is typically constructed of one or more flat, thin, flexible steel strips that are joined together in order to work as a single unit. The steel strips of a leaf spring are curved into an arc and attached at each end to the underside of a vehicle to help position and support the axle, and also to absorb shock.

Leaf springs are usually more able to evenly distribute the weight of a heavy load than ordinary coil-type springs. Although leaf springs have been in use for hundreds of years, they are generally only used for trucks and other heavy-duty vehicles today.

There are two basic types of leaf springs, mono-leaf and multi-leaf. A mono-leaf spring has only one arc-shaped steel strip, which is usually very thick in the middle with much thinner ends. A multi-leaf spring is constructed of several arc-shaped steel strips of varying lengths that are stacked together with the longest strip at the top, and the shortest strip at the bottom. Multi-leaf springs are generally able to support much greater loads than mono-leaf springs.