公开(公告)号：US20230313615A1

公开(公告)日：2023-10-05

申请号：US18331254

申请日：2023-06-08

Applicant: Guilin University of Technology

Inventor： Yu SONG ,  Mingzhi ZHANG ,  Jun LI ,  Xiaohui GAN ,  Hui LI ,  Jianqiang WANG ,  Yukun GENG ,  Shuaishuai DONG ,  Song DING

IPC: E21B7/02

CPC classification number: E21B7/027

Abstract: A drilling device for geotechnical engineering investigation is provided, including an outer supporting ring seat, where a center of the outer supporting ring seat is rotatably connected with a middle supporting ring seat through a first supporting shaft rod; a center of the middle supporting ring seat is rotatably connected with an inner supporting ring seat through a second supporting shaft rod; the first supporting shaft rod and the second supporting shaft rod are vertically crossed; a second rotating motor is fixedly installed at one end of the first supporting shaft rod on an outer surface of the outer supporting ring seat; a pow output end of the second rotating motor is fixedly connected with the first supporting shaft rod, an other end of the first supporting shaft rod is provided with a first locking mechanism for position limitation.