Variable-pitch double-layer horizontal anchor rod drilling device

The invention relates to the field of drilling engineering, in particular to a variable-pitch double-layer horizontal anchor rod drilling device. According to the variable-pitch double-layer horizontal anchor rod drilling device, the two drill rods can be used for drilling roadway surrounding rock at the same time, the distance between the drill rods can be adjusted according to needs, operation is convenient and fast, and efficiency is high. A variable-pitch double-layer horizontal type anchor rod drilling device comprises two supporting frames, a multi-stage hydraulic cylinder and the like, the two supporting frames are arranged in a bilateral symmetry mode, and the multi-stage hydraulic cylinder is connected between the middles of the supporting frames. The first servo motor and the drill rods are arranged on the upper portion and the lower portion of the first mounting frame, the double-shaft motor controls the lead screw to drive the moving part to move, and therefore the first servo motor and the drill