Pipe cutting device capable of conveniently moving pipe

The pipe cutting device comprises two sliding rails which are arranged in the left-right direction at intervals, a trolley is arranged between the two sliding rails, a plurality of sliding wheels are arranged on the sliding rails in a left-right sliding mode, the sliding wheels are arranged at the lower end of the trolley, and the sliding wheels are arranged on the sliding rails in a left-right sliding mode. A driving assembly for driving the trolley to slide is arranged on the trolley, a push plate and two limiting plates are arranged at the upper end of the trolley, the push plate is vertically arranged at the upper end of the trolley in the front-back direction, the two limiting plates are arranged at intervals in the front-back direction and are vertically arranged in the left-right direction, and the right ends of the limiting plates are connected with the left end of the push plate; a clamping assembly is arranged on the left side of the trolley and located on the left side of the sliding rail, and a cu