Self-propelled chain type waterproof board laying trolley in tunnel

The invention discloses a self-propelled chain type waterproof board laying trolley in a tunnel. The self-propelled chain type waterproof board laying trolley comprises a trolley body, annular displacement mechanisms and at least two waterproof board laying mechanisms, wherein the annular displacement mechanisms are arranged on the two axial sides of the trolley body correspondingly and used for driving the annular displacement mechanisms to walk in the tunnel; and the two ends of each waterproof board laying mechanism are connected with the two annular displacement mechanisms correspondinglyand used for laying waterproof boards on the inner wall of the tunnel when the annular displacement mechanisms are driven to do annular motion. According to the self-propelled chain type waterproof board laying trolley, the waterproof boards are wound around one of the waterproof board laying mechanisms, when the waterproof board laying mechanism moves in the annular direction of the annular displacement mechanism, the wa