Energy-saving and shock-absorbing dynamic compaction machine

According to the energy-saving and shock-absorbing dynamic compaction machine, a sliding rod is slidably connected with a first shell through a support and a through hole, and the sliding rod penetrates through the first shell through the support and the through hole. The bent rod swings to drive a protruding part at the end of the bent rod to slide along a sliding groove machined in the sliding rod so as to drive the sliding rod to slide along a through hole machined in the first shell, so that the height of the limiting column can be adjusted, and when soil at other heights needs to be tamped, the rammer can fall onto the surface of the soil at the other heights to tamp the soil at the surface at the other heights; an operator does not need to replace other devices for work, so that the limitation of the device is reduced, a limiting rod slides along a through hole machined in a second shell, the effect that when the compaction degree of soil needs to be adjusted, the operator needs to replace a rammer is a