Hc84 Rapid Impact Compactor has an impact energy of 84 kilojoules (kJ), an effective depth of 6 meters and a working height of 4.9 meters. It is a large model of  Rapid Impact Compactor on the market at present. Hc84 Rapid Impact Compactor produced by Hengda machinery is widely used in projects such as Hong Kong International Airport and Xiamen airport. In the actual construction test, the measured compaction depth is more than 5 meters on average, and the compaction effect is remarkable, which has been recognized and affirmed by the owner.

Construction characteristics of Rapid Impact Compactor

1. The Rapid Impact Compactor further reduces the sand, removes or weakens the poor symmetry of the sand in the vertical direction, and the poor beam fusion. The overall quality of the subgrade project is strictly controlled at the construction site. The reinforcement is not suitable for overpressure, which is easy to cause the sudden pressure of the surrounding sand and damage the original structure.

2. The original ground reinforcement effect is obvious, so it should be marketed, promoted and applied; After the subgrade engineering is filled with 1m height, point compaction can be selected instead of impact rolling; After the subgrade engineering is filled with 8M height, full compaction is selected to replace static pressure pile.

3. During the reinforcement process of the whole subgrade project, if part of the foundation settlement is too much, the reinforcement countermeasures should be taken according to the specific situation, that is, fill 3~6 hammers in the middle of the four tamping points to improve the actual effect of the overall reinforcement, which is also conducive to the leveling of the overall excavation face.

4. For some narrow filling subgrade edges of the excavation face, the flexibility of the Rapid Impact Compactor should be fully utilized. Fast, small footprint, and further strengthen the actual effect of filling the subgrade edge and chicken claw landform.

5. In the reinforcement of three backs, one side shall be compacted according to the specification from both sides to the middle; Culvert backfilling must ensure the reinforcement of matching layers on both sides of the hole; Offset monitoring observation points and real-time monitoring system shall be set before reinforcement. If it is found that different pressures change the structure during the whole working process, the pressure potential should be reduced and the pressure frequency should be increased.

Impact energy of hc84 Rapid Impact Compactor

The unit of impact energy is kilojoule (kJ), which represents the energy of some impact tools when they reach the working position under specified conditions. The impact energy of hc84 Rapid Impact Compactor produced by Tai'an Hengda is 84kj. Under the condition of hydraulic force, the Rapid Impact Compactor smashes the hammer weighing 7 tons onto the tamping plate standing on the ground. The specific working principle is: after the hydraulic cylinder of the Rapid Impact Compactor lifts the hammer body to a certain height, the quick lock reverses the force, and the hammer body accelerates its fall under the action of gravity and hydraulic force. After the hammer body falls, the hammer body and the ramming plate assembly are hit by the hammer pad to drive the ramming plate pre pressed on the ground, so as to compact the soil. This working principle is adopted by the tamping HC series Rapid Impact Compactors, also known as the forced drop hammer technology.

Construction scheme of Rapid Impact Compaction

1. The compaction road shall be leveled in front of the compactor according to the construction preparation works.

2. After the completion of construction, the Rapid Impact Compaction will release the compaction points on the standard subgrade according to the compaction specification required by the design, mark and number them with lime, and then measure the original elevation of each point according to the number. The position of construction setting out can be seen by hydraulic compaction, so that the hammer point is aligned with the point.

3. According to the compaction capacity, the hydraulic ram is divided into three levels: strong, medium and weak. Adjust the compaction to the strong level, compact the 3 hammer, measure the subsidence of the compaction point and record it.

4. Take every three hammers as a group, accumulate and record the settlement of every three hammers. Until the 6th, 9th and 12th hammers are compacted with high-speed compactor, the settlement of every 3 hammers is accumulated and recorded, and the relative compaction difference between the final 3 hammers and the first 3 hammers is not more than 10 meters.

5. After the single compaction point meets the requirements, the hydraulic ram mobile equipment will carry out the next point, three points left, middle and right each time, and three points in the next row.

6. The hydraulic test determines the minimum distance between the operation points of the Rapid Impact Compactor. During strong compaction, the minimum distance between operation points shall not be less than 50cm. When the filling thickness of the top of the horizontal structure is not less than 2m, compaction can be carried out.

Hc84 Rapid Impact Compactor has remarkable construction effect in practice, with an average effective depth of more than 5 meters, high tamping frequency, convenient transfer and simple operation. Tai'an Hengda machinery is manufactured by using a number of patented technologies, and has been updated to the sixth generation. It works for a long time without heating, which is significantly better than other second and third generations on the market.