Connecting device for connecting surface pipes

The utility model discloses a connecting device for surface pipe connection. The connecting device comprises a first connecting pipe, a central pipe, a second connecting pipe, a first connecting bolt,a second connecting bolt, a first connecting nut and a second connecting nut, the first connecting pipe, the central pipe and the second connecting pipe are horizontally arranged; a first notch and asecond notch are respectively formed in two ends of the lower surface of the central pipe; a first fixed through hole and a first connecting plate are arranged on the lower surface of the first connecting pipe; the first connecting plate extends out of the first notch; a first connecting through hole and a second connecting through hole are formed in the first connecting plate; and a second fixing through hole and a second connecting plate are arranged on the lower surface of the second connecting pipe, the second connecting plate extends out of the second notch, a third connecting through hole and a fourth connecting