Pile Driving Hammer

 

Pile Driving

Piles are commonly driven means of hammer supported by a crane by a special device known as a pile driver. The hammer is guided between two parallel steel member known as leads. The leads are carried on a frame in such a way that they can be supported in a vertical position or an incliened position. Hammers are the following types.

1.      Drop hammer

If a hammer is raised by winch and allowed to fall by gravity on the top of a pile,it Is called a drop hammer.

2.      Single  acting  hammer

If a hammer is raised by steam, compressed air or internal combustion, but is allowed to fall by gravity alone,it is called a single acting hammer.

3.      Double acting hammer

The double acting hammer employs steam or air for lifting the ram and for accelerating the downward stroke. It operates with succession or rapid blows.

4.      Diesel Hammer

The diesel hammer is a small, light weight , self contained and self acting type, using gasoline for fuel. The total driving energy is the sum of the empact of the ram plus the energy delivered by explosion.

5.      Vibratory Hammer

The driving unit vibrates at high frequency.