I often see construction workers pushing a weak and ineffective impact tamper on the construction site, walking back and forth in the trench five or six times, but the foundation still fails to meet the acceptance standards. Whenever this happens, I always want to rush over and tell them: You're not working; you're wasting your life! As an expert who has exported thousands of compaction machinery, my criterion for selecting an impact tamper is only one - it must have the "dominant force of one strike through to the end".
First, I will lead you to observe the "jumping height" of the impact tamper. I find that many beginners mistakenly believe that the higher the jump, the better. This is actually a huge misconception. What I pursue is that kind of rhythmic and solid impact force. I have personally tested machines of different brands, and I found that the truly high-quality impact tamper has its center of gravity designed extremely precisely. When I pull the throttle, I can feel that each strike of the machine precisely hits the ground instead of bouncing randomly on the ground. I suggest you pay attention to the "impact force" of the impact tamper (Impact Force). I usually choose models with an impact force between 15kN and 18kN for my overseas customers. I have calculated that this intensity of impact force can make soil particles rearrange instantly, and you only need to walk one or two times to achieve a compaction degree of over 95%.
I also want to lead you to check its "base plate". I refuse to use those cheap base plates made by stamping thin steel plates. I insist on using a composite structure of wood and steel plates or a high-strength manganese steel casting base plate in my exported models. I find that the wooden composite base plate can absorb excess vibrations, protect the core components of the machine, and at the same time transfer the strongest force to the soil. I'll teach you a secret: Look at the wear resistance of the base plate. The base plates I choose can remain flat even after continuous operation for 200 hours in a debris-filled harsh working environment. I tell you that only by choosing the right "feet", you can freely move through those cable trenches up to one meter deep and completely get rid of the nightmare of repetitive labor.
