The invention relates to preparation equipment of a modified
asphalt pavement mixture. Comprising an
engineering vehicle as well as an oil furnace device and a mixing device which are carried by the
engineering vehicle, and further comprises a circulating device for circulating hot oil between the oil furnace device and the mixing device, the mixing device comprises a
granular material box internally provided with a plurality of material bins, discharging valves are installed on bottom outlets of the material bins of the
granular material box, a stirring box with a stirring
assembly is installed below the
granular material box, a discharging valve is installed on a bottom outlet of the stirring box, a discharging hopper is installed below a bottom outlet of the stirring box, and the mixing device further comprises a
powder tank. A conveying
assembly for conveying
powder in the tank into the stirring box is mounted at the bottom of the
powder tank, the heat tracing type
asphalt pump is provided with a heat tracing box, and the in-box heat tracing
material distribution pipe is mounted at the top of an inner cavity of the stirring box and is provided with a plurality of
material distribution bent pipes; a discharging
pipe of the heat tracing type
asphalt tank is connected with an inlet of the heat tracing type asphalt pump through an out-box heat tracing conveying
pipe, an outlet of the heat tracing type asphalt pump is connected with an outer port of the in-box heat tracing distributing pipe through the out-box heat tracing conveying pipe, and the heat tracing type asphalt tank, the out-box heat tracing conveying pipe, the in-box heat tracing distributing pipe and the heat tracing box are connected in series through connecting oil pipelines. And under the action of the circulating device, hot oil circularly flows between the oil cavities of the components and the oil furnace device. The device is vehicle-mounted equipment, on-site preparation of the mixture is achieved, and the requirements for flexibility and timeliness of mixture supply are met.