The synchronized chip seal vehicle is independently developed and designed by our company, with proprietary intellectual property rights. Based on the same model of synchronized chip seal technology, it has been improved to perform work under harsher conditions, enhancing the operational stability of the equipment. This vehicle is mainly used for chip sealing processes in highway surfaces, bridge waterproofing, and lower sealing layers. It synchronously sprays asphalt binder and spreads aggregates to ensure maximum surface contact between the binder and aggregate, achieving optimal bonding. The equipment integrates machine, electrical, and hydraulic operations, simplifying the operation process, making it user-friendly, and ensuring that the overall technical performance reaches world-leading standards.
- Accurate Spraying Volume: Achieves perfect triple overlap of asphalt spraying with excellent uniformity.
- Intelligent Control: Real-time monitoring of spraying (or spreading) volume and vehicle speed with closed-loop control.
- Full Computer Touchscreen Operation: Equipped with a video monitoring system for observing the entire working process in real-time.
- Reliable Performance: Easy to operate with convenient handling.
- Zero Start Line Spray: Strong spray system and simultaneous asphalt and aggregate spraying system.
- Modular Control System: Low failure rate with quick and easy maintenance.
- Most Effective Heating and Recycling System: Ensures smooth pipeline and nozzle operation, eliminating the need for diesel cleaning.
- Flexible Handheld Spraying System: Allows spraying of asphalt on special areas of the road surface.
- Pneumatic Nozzles and Gate Controls: Each nozzle and gate can be controlled individually by the computer.
- Adjustable Spraying/Spreading Width: The spraying or spreading width can be adjusted at any time during operation.
- Self-Suction and Discharge Function: Enables self-refilling and self-discharge of asphalt to improve work efficiency.
This intelligent asphalt chip seal vehicle integrates advanced technology and practical design, making it an efficient, reliable, and user-friendly solution for road surface sealing projects.
Machine Performance Parameters
- Chassis Model: Shaanxi Automobile Delong SX1319MB6F1 (Euro 6)
- Spraying Width: ≤ 4200 mm
- Asphalt Spraying Volume: 0.3 - 4.0 L/m²
- Heating System: Imported dual diesel burners (200,000 kcal/hour)
- Gross Weight: 55 t
- Unladen Weight: 17.9 t
- Spraying Medium: Hot asphalt, hot modified asphalt, diluted asphalt, emulsified asphalt, rubber-modified asphalt (meets the following conditions: 1. Rubber-modified asphalt viscosity Haake 190°C 1500–2200 Pa.s; 2. Spraying temperature 200-210°C; 3. Spraying width 4000mm)
- Material Specification: S5 - S25 mm
- Spraying Accuracy: ±1%
- Asphalt Tank Capacity: 9 m³
- Material Bin Capacity: 14 m³
- Stone Chip Spraying Volume: Adjustable
- Maximum Hydraulic System Pressure: 20 MPa
- Asphalt Insulation Method: Automatic thermal oil insulation
- Cleaning Method: High-pressure air cleaning
- Dimensions: 10755 × 2500 × 3800 mm
Equipment Composition and Structural Features
The synchronous gravel spreader mainly consists of the asphalt spraying system, stone spreading system, electrical operation system, and auxiliary machine system.
Asphalt Spraying System:
The spraying system mainly consists of the asphalt tank, heating section, hydraulic section, control section, and spraying section.
- Asphalt Tank:
The outer wall of the tank is made of stainless steel matte plates, with insulation filler in the middle. The interior consists of a heating boiler and thermal oil coils, offering a neat and elegant appearance. The externally added air control valve group ensures the circulation of asphalt in the pipeline, preventing local overheating and aging. - Heating Section:
The heating device uses imported burners and a high-efficiency boiler. It features high combustion efficiency, good atomization, low fuel consumption, fast heating speed, and stable operation. No manual monitoring is required, ensuring that the asphalt in the pipeline is effectively heated. - Hydraulic Section:
The hydraulic components (hydraulic pump, hydraulic motor) are from internationally renowned brands, ensuring reliable transmission performance. - Control Section:
The system uses encoders to accurately detect vehicle speed and asphalt pump speed, ensuring spraying accuracy. Radar, encoders, and main circuit switch components are all imported. Once the spraying amount is set, the PLC automatically calculates vehicle speed and pump speed to achieve automatic control and recommend an optimal vehicle speed to the driver. - Spraying Section:
Each nozzle is controlled by a dedicated air valve to open or close, ensuring uniform pressure and excellent spraying results through specially designed pipelines.
Stone Spreading System:
The stone spreading system consists of the material bin, material door control mechanism, and spreader.
- The material bin is equipped with an internal hidden central top flip shaft, ensuring stable lifting of the bin.
- The material doors are controlled by 16 routes, using an angle control device that allows precise setting of the material door opening. This design effectively adjusts the spreading uniformity and avoids the traditional uneven spreading of materials.
- The adjusting range of the divider plate and lower plate is large, making it suitable for different specifications (S5～S25mm) of stone.
Electrical Operation System:
- Precise Spraying Parameters:
Accurate spraying parameters are provided to operators based on different working requirements. Through the display screen on the rear operation platform, real-time measurements and adjustments reflect the device's running conditions. - Manual Operation:
Simple manual operation allows easy switching between manual and automatic modes, improving work efficiency. - Adjustable Spraying Width:
The width of both asphalt spraying and stone spreading can be easily adjusted based on the road width. - Limit Switch Device:
The limit switch controls the spray head rack and material bin lifting to prevent overtravel and potential damage to operators. - Thermal Oil Auto Alarm:
The thermal oil system includes an automatic alarm feature, with high and low-level alarms for material levels and asphalt levels.
Equipment Advantages:
- Exclusive Full Hydraulic Drive:
No need for auxiliary power sources, making operation simpler and more convenient. - Exclusive High-Efficiency Thermal Oil Boiler:
Fast heating speed, overcoming the traditional flue heating method. - Internal Lifting Material Bin:
Facilitates stone spreading construction in tunnels, under bridges, and on curved roads. - Full Electric Control:
The high automation level ensures accurate calculation of asphalt spraying and stone spreading amounts during operation. - Angle Control for Material Doors:
Guarantees precise material discharge. - Labor and Cost Savings:
Reduces labor intensity, saves human resources, lowers construction costs, and improves work efficiency and quality. - Stable Operation:
Uniform spreading, with adjustable asphalt spraying and stone spreading widths. - Excellent Insulation Layer:
Ensures a thermal performance index of ≤20℃/8h, corrosion-resistant and durable. - Versatility:
Can spray various types of asphalt and spread stones ranging from S5 to S25mm. - High Precision Nozzles:
Guarantees consistency in spray effect and nozzle performance. - Humanized Operation:
Offers both remote control and on-site operation, greatly improving operator convenience. - Zero-Speed Start Spraying:
Achieved by the perfect combination of electric control and hydraulic system constant pressure device. - Reliable Performance:
The equipment has been improved through numerous engineering modifications for reliable performance and easy maintenance, providing high cost-effectiveness.
Precautions:
- Cleaning the Asphalt Pump and Pipeline:
After each operation or when changing work sites, the asphalt pump and pipeline must be cleaned. Failure to do so will prevent the machine from working properly the next time. - Check Valves Before Spraying:
Before spraying, ensure all valve positions are correct. - Asphalt Temperature:
The hot asphalt in the tank must be heated to a working temperature of 160~180℃. Long-distance transport or long working hours may require the use of heating devices, but not as a furnace. - Do Not Overfill the Asphalt Tank:
The tank should not be overfilled. Ensure the fuel cap is tightly closed to prevent spillage during transport. - Proper Heating of Asphalt:
The asphalt height must exceed the top surface of the combustion chamber when heating with the burner. Otherwise, the combustion chamber could be damaged. - Avoid Forcing Blocked Asphalt Pump:
If the asphalt pump or pipeline is blocked by solidified asphalt, do not force the pump. Use a heat gun to thaw it and avoid direct heat on ball valves and rubber parts. - Start Slowly:
When beginning to spray asphalt, accelerate slowly and keep the vehicle speed low to prevent damage to components like the clutch and asphalt pump. - Control Console Operation:
The vehicle has front and rear control consoles. The switch must be set to the correct control position, either front or rear, depending on which console is being used. The rear control console can only control the spraying nozzle's lift. - Remove Leftover Asphalt:
At the end of the day, leftover asphalt must be returned to the asphalt pool, or it will solidify in the tank and make future use impossible. If the vehicle or equipment fails and cannot be repaired within a short time, all the asphalt must be drained from the tank.
