How does the rapid impact compactor work? What is the principle of rapid impact compaction?

The rapid impact compactor adopts the principle of dynamic compaction technology and is an integrated product of mechanical-electrical-hydraulic. The rapid impact compaction adopts a relatively movable double-layer nested structure and a ramming foot with a buffer pad, which can be suspended on the body of an excavator, a loader, etc., and the hydraulic power is provided by the bearing equipment.

The traditional dynamic compaction technology uses a crawler crane to release a heavy hammer of 5~20 t from the air at a height of 20 m to ram the foundation, and the ramming rate is once or twice per minute for each tamping point. If well designed and controlled, uniform and significant improvement can be achieved within a depth of 10 m from the foundation. In practical engineering, many foundation projects only need to deal with limited depth, such as compressive soil foundation, collapsible soil foundation and some natural soil foundation need to be treated before construction.

Rapid impact compactor use the principles of dynamic compaction technology and are specially designed to compact foundations at specific depths. The working principle of the rapid impact compaction is as follows: the rammer is lifted to a certain height by a hydraulic cylinder and then released. The rammer accelerates and falls under the combined action of gravity and hydraulic accumulator. The tamping foot is used to ram the ground again, and it can be rammed more than 40 times per minute. Depending on the quality of the rammer, which is 5-9 t, the energy of each ramming on the ground can reach 62-109 kNm. Due to the action of the rammer on the ground, the rapid impact compaction machine is implemented by static pressure on the ground with a buffer pad, and under the continuous action of the hydraulic force device, compared with the traditional dynamic compaction, its peak force It is small, has a long action time, has the outstanding characteristics of soft action, not easy to cut the flow line of the filling layer, and has the functions of preventing dust and splashing. Compared with the traditional surface rolling technology (roller, etc.), its penetration ability is strong and uniform, and it is not easy to form surface induration in the basic treatment, and a relatively uniform density can be obtained in a larger depth range.