Miniaturization of the machine, 1.8 meters ultra-small machine width, optional width limiting device, minimum paving width of 0.8 meters, suitable for paving maintenance of milling "grooves", using hydraulically independent drive, crawler walking The device is equipped with a water-cooled turbocharged diesel engine (75kW/2000rpm), a powerful three-phase alternator with generator management system, and the generator adopts independent drive technology. The hydraulic system adopts load-sensitive control technology on both sides. The hoppers can be individually folded and oscillating follow-up inference. The electronic control system design is a CAN bus technology platform, a network control system of the CPU control technology, and an automatic leveling device.