DEVICE FOR DRILLING HOLES IN THE GROUND Russian patent published in 2022 - IPC E02F5/18 

FIELD: construction.

SUBSTANCE: invention relates to the technology of construction work, to obtain wells in the ground, and can be used for trenchless laying of underground utilities. Device for drilling holes in soil contains a body, inside of which a striker is placed, in the rear part of the striker there is a forward stroke chamber connected to the reverse stroke chamber through a hole and a groove in the striker. A shank is located in the rear part of the body, in which a guide bush with a shoulder is installed through the damper, a cylindrical cage with an insert is placed inside the guide bush, a branch pipe with a groove and a conical surface is installed in the front part of the cylindrical cage through a spring. The angle of the taper surfaces of the nozzle is in the range from 25° to 75°. The rear part of the branch pipe is provided with a step for placing an insert on it, which is made with the possibility of interacting with the conical surface of the branch pipe.

EFFECT: improving the efficiency of the device.

1 cl, 3 dwg