Patent ID: 7854572

Claim:
A piling machine with a high-pressure jet spiral bit, comprising: a moving system; an underpan; a pile frame; a power system; a drill pipe; a drill bit, comprising: an upper leaf helix, a lower leaf helix, and a middle leaf helix; a high-pressure concrete casting system; and a high-pressure jet grouting system; wherein said drill bit is disposed at the head of said drill pipe and comprises multiple nozzles disposed thereon; said upper leaf helix tapers from a smaller diameter to a larger diameter from the top to the bottom thereof, said middle leaf helix has a constant diameter, and said lower leaf helix tapers from a larger diameter to a smaller diameter from the top to the bottom thereof so that the drill bit with upper and lower tines is formed; said drill bit is spiral; said high-pressure jet grouting system is disposed in said drill bit; said nozzles comprise multiple upper nozzles, middle nozzles, and lower nozzles, said upper nozzles being disposed at the top of said drill bit, said middle nozzles being disposed in the middle of said drill bit, and said lower nozzles being disposed at the bottom of said drill bit; an upper port is disposed below said upper nozzle and operates to discharge mud; a lower port is disposed above said lower nozzle and operates to discharge mud; said drill pipe comprises an inner portion and an outer portion; said inner portion of said drill pipe comprises a high-pressure concrete casting channel and a mud-discharging channel; said mud-discharging channel is connected to said upper port and said lower port; a high-pressure jet grouting channel is disposed between said inner portion and said outer portion; an upper nozzle channel, a middle nozzle channel and a lower nozzle channel are disposed in said high-pressure jet grouting channel; said upper nozzle channel is connected to said upper nozzle; said middle nozzle channel is connected to said middle nozzle; and said lower nozzle channel is connected to said lower nozzle.