Xtf1003 asphalt macadam synchronous seal car is mainly composed of automobile chassis system, stone distribution system, asphalt spraying system, electrical intelligent control system, air circuit system, hydraulic system, etc. its main structural features are as follows. Chassis System Division The vehicle adopts China heavy duty automobile HOWO series zz1257n4347e1 national V emission chassis, equipped with 228kw (1900r / min) engine power and strong power. The cab is equipped with PTO, which can adjust the engine speed stably during operation and is easy to operate. Chassis engine full power right angle drive power take-off is adopted, and the power take-off is equipped with protection device to effectively ensure the safety of power system. The chassis is equipped with cold and warm air conditioning, imported ABS anti lock system, comfortable and safe operation.Chassis system Stone distribution system The distribution system is composed of a silo and a stone spreader, and the silo is an internal lifting silo. The silo has the advantages of low loading height, convenient loading, good adaptability of bridge and culvert, and tunnel construction. The silo is equipped with a screen, which can effectively prevent large stones from blocking the material gate. Stone spreader is mainly composed of spreader frame, adjusting beam of material gate, material gate, air cylinder of material gate, material allocation roller, etc. stone passes through the material gate from the silo through its own weight, and falls evenly through the material allocation roller and material distribution grid. The maximum width of stone distribution can reach 4m. Each material door of the spreader is equipped with a fine adjustment mechanism, and the stone materials are evenly distributed, which can meet the construction requirements of various grades of highways.Stone spreader Asphalt spraying system Spray beam is the main working device of asphalt macadam synchronous sealer, whose main function is to spray asphalt medium. Spray beam is mainly composed of left spray arm, right spray arm, main spray arm, knuckle assembly, lifting assembly, etc. the spray beam is unfolded and closed directly by hydraulic cylinder in the up turn automatic folding mode. The maximum spraying width of the spraying beam can reach 4 m after the whole spreading, and three overlapping spraying can be realized during the construction. The nozzle and nozzle cylinder are detachable, which is convenient for maintenance.Electrical intelligent control system The electrical control system of the vehicle is mainly divided into automatic control system and manual control system, which can be switched at any time and can independently complete the construction work. The automatic system can realize the automatic spraying according to the set unit asphalt spraying amount, and realize the zero start spraying of asphalt through the strong spraying technology. At the same time, during the construction process, the display in the cab displays the construction parameters in real time, and the camera monitoring screen can also observe the construction effect in real time. Gas path system The air system mainly controls asphalt spraying, spray beam lifting, asphalt pipeline cleaning, stone spreading and other important works, mainly composed of material door cylinder, air path joint, filter, pneumatic butterfly valve, air source distributor, air bag, etc. Hydraulic system The hydraulic system mainly controls the action of spray beam, silo, asphalt spray system, heat transfer oil system, mixing system, etc. the key parts are imported brands, with stable performance and reliable quality. For example, the hydraulic pump is selected from permk, the hydraulic motor is selected from Danfoss, and the electronic valve is selected from accor. The hydraulic system is simple in operation and reliable in performance. It adopts electro-hydraulic proportional closed-loop control to ensure that the asphalt distribution volume is not affected by the change of speed during construction. XCMG xtf1003 asphalt macadam synchronous seal car was successfully trial manufactured in 2016. After one year's continuous trial evaluation, all performance indexes including automation, operation comfort, maintenance convenience and distribution accuracy are highly praised by users. At present, the car has been mass produced and put into the market.