Pipeline exploring and digging protection tool with adjustable height and width

The utility model discloses a pipeline exploring and digging protection tool with adjustable height and width, which comprises channel steel structures, a steel pipe, a breast board and an adjusting device, each channel steel structure is formed by connecting the ends A of three L-shaped channel steel in a staggered manner, and the twelve channel steel structures are connected to form a rectangular frame structure. The two steel pipes are fixedly connected with the middle positions of the front face and the rear face of the rectangular frame structure respectively, the two soil retaining plates are arranged on the upper sides and the lower sides of the steel pipes respectively, two adjusting devices are installed on the longitudinal channel steel structure and the vertical channel steel structure, each adjusting device comprises an L-shaped channel steel B, a nut and a bolt, a plurality of screw holes are formed in the two sides of each L-shaped channel steel B, and the nuts are connected with the bolts throu