Miniature crawler-type cable tunnel patrol robot

The invention discloses a miniature crawler-type cable tunnel patrol robot, which relates to a robot capable of realizing cable tunnel/pipeline patrolling. The robot consists of two independent crawlers, a substrate, a posture setting mechanism, a camera with a holder, and a sensor. The posture setting mechanism is arranged in the substrate. The camera with the holder is arranged on the substrate. The two crawlers are positioned on the left and right sides of the substrate respectively, and are in rotational connection with driving connecting rods on the substrate and the posture setting mechanism by two groups of shafts respectively. The sensor is arranged on the substrate. The left and right independently driven crawlers are adopted, and a posture included angle formed by the two groups of crawlers can be set, so the robot can be adapted to either the smooth-riding surfaces of cable tunnels or the arched surfaces of pipelines of different diameters by regulating the posture included angle, and realizes advancing, stepping-back and various turning motions by controlling the motions of the left and right crawlers. The robot realizes the automatic patrolling of underground transmission lines.