The structure of rapid impact compaction equipment is composed of ① bearing mechanism, ② tamping frame, ③ tamping hammer, ④ lower hammer head, ⑤ buffer device, ⑥ hydraulic system, ⑦ electronic control system, etc. it is a new type of hydraulic tamping equipment widely used in tamping projects at present. It can be used with forklifts, excavators, loaders, etc., with simple installation method, convenient operation, fast transition speed and high work efficiency.

The structure principle of Rapid Impact Compaction can be divided into free drop hammer and forced drop hammer. The working principle of the pressure hammer (double acting) hydraulic compactor is: the hydraulic cylinder lifts the upper hammer to the set height, and then quickly reverses the force, so that the upper hammer falls under the combined action of gravity and the hydraulic cylinder's thrust, and the lower hammer is hit by the conductive base plate to tamp the foundation or fill earth rock. At present, rapid impact compaction equipment (double action) is the mainstream of current hydraulic tamping equipment. Therefore, it can be said that rapid impact compaction equipment is a tamping method that uses the combined force of mechanical gravity and variable force to compress soil, which can be called "dynamic reinforcement method" or "dynamic compaction method". The essence of dynamic method is to obtain a large dynamic resultant force by applying external force on the basis of static compaction, so as to achieve the purpose of better compaction effect. At the same time, another feature of the Rapid Impact Compaction is "high frequency". The strike rate can reach about 80 times / minute, forming a continuous pulse. The working frequency can affect the particle motion state of the compacted material and have a direct impact on the compactness of the compacted foundation.

Rapid Impact Compaction is a compactor that uses mechanical gravity and variable force to compress soil. The compaction method of soil by Rapid Impact Compaction can be called dynamic compaction method, which is called dynamic compaction method. Power refers to power and variable force. Dynamic compaction technology is a new technology to distinguish static pressure, vibration compaction, impact compaction, compaction and other traditional compaction technologies. Compared with traditional compaction machinery and small rollers, Rapid Impact Compactions have the characteristics of high compaction form and large depth, and can obtain rounder compactness in a very large depth range. Compared with large machinery such as impact roller and roller, Rapid Impact Compaction has the characteristics of flexibility, strong adaptability, small maximum value of interaction force, high strike frequency and mild effect.

Compared with traditional compaction machinery and equipment and vibratory roller, Rapid Impact Compaction has the characteristics of high compaction kinetic energy and large influence depth, and can obtain more uniform compaction degree in a larger depth range. Compared with large machinery such as impact roller and strong roller, it has outstanding characteristics such as flexibility, strong adaptability, small peak value of interaction force, high strike frequency and soft effect. In addition. Rapid Impact Compaction is not only suitable for general horizontal compaction, but also for slope compaction. The compaction kinetic energy is adjustable, which can meet the compaction requirements of different subgrade projects. At the same time, the outer hammer of the Rapid Impact Compaction is in direct contact with the compacted surface from beginning to end, which can prevent the potential danger and debris splash caused by the impact drop, and can also be quickly transferred according to the excavator or loader