Double-wheel groove milling machine and guide rod thereof

The invention discloses a guide rod of a double-wheel groove milling machine. The guide rod comprises a telescopic guide rod, a pull rope, an upper clamp and a lower clamp, wherein the upper clamp andthe lower clamp are used for clamping the telescopic guide rod, the telescopic guide rod comprises an inner guide rod and an outer guide rod, the outer guide rod penetrates through the upper clamp and the lower clamp in sequence, a first pulley is arranged on the inner guide rod, the lower end of the outer guide rod is a double-wheel milling head fixing end, a second pulley and a third pulley arearranged on the two sides of the first pulley on the outer guide rod, one end of the pull rope is fixed on the lower clamp, and the other end of the pull rope sequentially bypasses the second pulley,the first pulley and the third pulley to be connected with the lower clamp. The invention further discloses a double-wheel groove milling machine adopting the guide rod. Compared with the prior art,the double-wheel groove mill