The mixture ignites, transferring the energy of the falling weight to the pile head, and driving the weight up. The weight of the piston compresses the air/fuel mixture, heating it to the ignition point of diesel fuel. The weight is dropped, using a quick-release. Diesel fuel is injected into the cylinder. Piledriving is started by raising the weight usually a cable from the crane holding the pile driver - This draws air into the cylinder. The weight is the piston, and the apparatus which connects to the top of the pile is the cylinder. Modern piledriving equipment uses various methods to raise the weight and guide the pile.Ī modern diesel pile hammer is a large two-stroke diesel engine. Ancient pile driving equipment used human or animal labor to lift weights, usually by means of pulleys, then dropping the weight onto the upper end of the pile.
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