While-drilling measuring instrument self-locking device and method

The invention relates to a while-drilling measuring instrument self-locking device and method. According to the technical scheme, the while-drilling measuring instrument self-locking device comprisesa self-locking mechanism and an instrument connector, an outer cylinder is arranged on the outer side of a salvage head, three slip grooves are evenly distributed on the outer cylinder in the circumferential direction, slips are placed in the slip grooves, a bevel body is arranged in the outer cylinder, and the bevel body is connected to the lower portion of the salvage head in a threaded mode, and the upper portion of the bevel body is connected to the lower portions of the slips. A locking spring is arranged at the upper end of the bevel body, the instrument connector is arranged on the lower portion of the outer cylinder, small springs are installed on a shell of the instrument connector in a sleeving mode, loose pulleys are arranged on the lower portion of the small springs, semicircleclamping clacks are arran