The main body of the hammer is composed of a cylinder and a plunger pump. Its principle is similar to that of a single slot two-stroke diesel engine. The strong working pressure caused by deflagration of atomized diesel engine under high pressure and high temperature is used to drive the high chromium alloy hammer head to work.

Diesel engine hammer is to use gasoline and diesel explosion to promote the linear movement of piston rod and hammer the foundation pile. The net weight of piston rod is from hundreds of kg to several tons. The pile should be driven with heavy hammer and light hammer. If the diesel pile hammer manufacturer hammers with heavy hammer, most of the hammering power is absorbed by the pile body, the pile is not easy to drive in, and the pile head is easy to be broken. There should be a necessary ratio between hammer weight and pile weight, or the ground stress of hammering should be controlled to prevent the pile from being broken. Pile frame is suitable for pile body and pile hammer. It can correctly guide the direction of pile in the whole process of pile sinking, and make the pile hammer impact along the specified direction.

The work of diesel engine hammer is started by compression ignition diesel engine. Therefore, it is necessary to ensure that the closed steam body in the cylinder exceeds the necessary compression ratio. Sometimes, when piling on the foundation on the geological structure of soft foundation treatment, the Nonel can not be ignited because of the small recoil force and insufficient reduction. Therefore, the high chromium alloy hammer head must be hung with the lifting hook for several times to release the impact and start. The hammer seat of diesel engine hammer is attached with fuel injection pump, automobile fuel tank, water cooling water storage tank and pile cap. The main active gap between plunger pump and cylinder liner is sealed by malleable piston pump ring.

The cylinder is used as the hammer seat for the cylinder hammer, and the extended cylinder liner inner cavity is immediately used for guiding, and two guide rods are omitted. The plunger pump is a high chromium alloy hammer head, which can exercise up and down and left and right in the cylinder. When the foundation is driven, the pile cap under the hammer seat is pressed on the top of the pile, and the plunger pump is raised with a lifting hook, and then the downward impact is decoupled to reduce the closed air in the cylinder. And carry out the whole process of oil pump, burst, impact, ventilation and so on.