Hydraulic pile hammer belongs to impact pile hammer, which can be divided into single-acting type and double-acting type according to its structure and working principle. The so-called single-acting type means that the impact hammer core is quickly released to a predetermined height through a hydraulic device, and the impact hammer core falls freely; the double-acting type means that the impact hammer core is lifted to a predetermined height through a hydraulic device, and the acceleration energy is obtained from the hydraulic system to increase the impact speed. , piling.
This also corresponds to the two pile theories. The single-acting hydraulic piling hammer corresponds to the heavy hammer and light theory. It has the characteristics of heavy hammer core weight, low impact speed, and long hammering time. Material, pile damage rate is low, especially suitable for concrete pipe piles. The double-acting hydraulic piling hammer corresponds to the theory of light hammer weight. It has the characteristics of small hammer core weight, high impact speed, short hammering time, etc., and large impact energy, which is most suitable for steel piles.
Advantages of hydraulic piling hammer
Strong controllability: freely adjust the stroke and hammering frequency of the hammer head, adjust the output energy, and control the action time between the hammer head and the pile, avoid damage to the pile, optimize operation efficiency, and increase productivity.
Reliability: The hydraulic hammer has a simple structure, an overall frame structure, low failure rate, and easy maintenance.
Monitorability: The energy monitor directly and indirectly displays the operating conditions, records the operating parameters of the hydraulic hammer, and can store the records into the computer and print the results.
Strong adaptability: It can be used in various construction methods and any pile type, whether it is on land or on water, it can be used for suspension operations with guide pile frames or cranes. Especially suitable for driving vertical or inclined support piles.
Environmental protection: The hydraulic hammer operates cleanly, with low noise and no exhaust gas emission.
Compared with diesel piling hammer, its advantages: no pollution, meet the requirements of relevant laws and regulations, suitable for urban foundation construction with high environmental quality requirements.
Compared with the static pile driver, the advantage of the hydraulic piling hammer is that it can be freely switched between ordinary auger drilling rigs, rotary drilling rigs, and diesel hammer racks, and is convenient for transportation. In the reconstruction of the old city, there are many side piles and corner piles and the advantages of hydraulic piling hammer for pile foundation construction near rivers or other obstacles.
No matter what kind of pile foundation construction equipment, it is better to choose the one that is suitable for the actual situation of the site.