There is little difference in the functional structure of the asphalt gravel synchronous sealing trucks on the market, but there will be certain differences in the mechanical structure. The asphalt gravel synchronous sealing trucks are mainly used for road surfaces, bridge deck waterproofing, and lower sealing layers. Gravel sealing process. This equipment realizes the synchronization of the spreading of asphalt binder and the spreading of stones, so that the asphalt binder and stones have the fullest surface contact in a short period of time and achieve maximum adhesion between them. The equipment is especially suitable for spreading asphalt binders that require the use of modified asphalt or rubber asphalt. The overall function is to complete asphalt spreading and gravel spreading simultaneously.
The asphalt gravel synchronous sealing truck absorbs the asphalt from the asphalt tank through the asphalt pump, and then sprays it out from the asphalt spreading rod through a series of valves and pipelines; at the same time, the gravel spreading system also works synchronously. The loader loads the aggregate into the aggregate bin of the sealing truck in advance. During operation, the hydraulic motor drives the conveyor belts (two) to send the gravel to the spreading hopper. The pneumatic system controls the cylinder to open the material door, and the spreading rollers are driven by the hydraulic motor. Under the drive, the gushing aggregates are broken up and thrown into the guide trough. The gravel is evenly spread on the asphalt pavement through the guide trough, thereby completing the synchronous sealing work of asphalt gravel.

The hydraulic pump drives the hydraulic motor to rotate, which drives the belt conveyor to run, transporting the gravel to the stone spreading system. The material door is opened through the pneumatic system, and the gravel is spread under the action of the weight of the gravel and the rotation of the spreading roller. There are two material level sensors in the spreading system. The electronic control system uses these two sensors to monitor the material level in the auxiliary hopper and controls whether the two solenoid valves are energized, thus controlling whether the conveying motor is running and realizing the aggregate conveying. Real-time control. During debugging, the speed of the feeding motor is adjusted by controlling the size of the two throttle valve openings. Generally, the initial speed of the motor is set to about 260r·min-1. The speed of the motor can be adjusted according to actual working conditions to meet construction needs.
Its principle is consistent with the principle of the gravel spreading hydraulic system. The speed of the spreading roller motor is controlled by adjusting the throttle valve, and the starting and stopping of the spreading roller is realized by controlling whether the solenoid valve is energized or not.