Well logging cable depth acquisition device

The utility model discloses a logging cable depth acquisition device, and relates to the technical field of logging equipment. The device comprises a frame body, a chain rolling machine, a weighting block, a chain, a mounting plate, a connecting buckle, a measuring instrument mounting box, an LED light bar, a control computer and a measuring instrument, the left part of the frame body is of a circular hollow structure, the right part of the frame body is of a square structure, the chain rolling machine is erected in the left part of the frame body, the weighting block is placed above the right part of the frame body, three chains below the chain rolling machine vertically extend downwards, and the lower end of each chain is buckled with the mounting plate through a connecting buckle at the upper part of the mounting plate; a measuring instrument mounting box is arranged below the mounting plate, and a measuring instrument is embedded in the measuring instrument mounting box; an LED light bar is embedded in th