introduction and Parameter:

Here is the English translation of the paragraph:

Equipped with a 73KW engine and a high-efficiency desert air filter, the maximum drilling diameter can reach 305mm. The hydraulic system uses a high-pressure cast iron pump, with widened and thickened track plates. The lifting chain uses 20A roller chain, and the box-type large-section steel guide rail ensures sufficient strength. The rotary head is equipped with a high-torque rotary hydraulic motor and adopts a high-modulus straight-tooth large reduction ratio transmission, providing the drill rig with a rotary torque of up to 6000Nm, making it suitable for large-diameter pile hole construction operations. An optional 1-ton slide winch is available for convenient lifting of drill bits, drill tools, impactors, etc. When used on slopes, an optional 8-ton frame winch can be selected to ensure sufficient pulling force.