What is the basic working principle of hydraulic hammer?
Hydraulic hammer belongs to impact pile hammer, which can be divided into single acting type and double acting type according to its structure and basic principle. The so-called single action type refers to that the hammer core is quickly released after lifting to a predetermined height by the hydraulic device, and the impact hammer core strikes the pile by free falling; the double action type refers to that the impact hammer core gets acceleration kinetic energy from the hydraulic system to improve the impact speed and hit the pile body after the hammer core is lifted to a predetermined height by the hydraulic device. This also corresponds to two pile driving theories respectively. The single acting hydraulic pile hammer corresponds to the heavy hammer light driving theory, which is characterized by relatively large hammer core weight, low impact speed and long hammering action time. The pile hammer has large penetration per blow, which is suitable for pile types of various shapes and materials, with low pile damage rate, and is often suitable for driving concrete pipe piles. The double acting hydraulic pile hammer corresponding to the light hammer heavy driving theory is characterized by smaller hammer core weight, higher impact speed and shorter hammer pile action time. It has large impact kinetic energy and is most suitable for driving steel pile.
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