Product Introduction: 22m³ Dongfeng Tianlong Tandem Axle Washing-Sweeper Truck | DFAC 6×4 Washing-Sweeper Truck with 12m³ Water Tank and 10m³ Debris Bin

I. Product Overview

The 22m³ Dongfeng Tianlong Tandem Axle Washing-Sweeper Truck represents the ultimate heavy-duty solution for large-scale road cleaning operations. Built on the robust Dongfeng Tianlong chassis with 4350+1350 mm tandem axle configuration, this heavy-duty washing-sweeper truck combines massive capacity with exceptional cleaning performance. Designed for highways, airport runways, industrial parks, and major urban arteries, this large-capacity sweeper delivers diesel-equivalent power with advanced features for comprehensive road maintenance. As a flagship model in the Chengli sanitation truck series, this wet cleaning sweeper is engineered to handle the most demanding municipal and industrial applications with efficiency and reliability, making it ideal for heavy-duty street sweeping and infrastructure maintenance projects.

II. Core Parameters

• Chassis Model: Dongfeng Tianlong Tandem Axle (4350+1350 mm)

• Overall Dimensions: Please refer to technical drawings

• Wheelbase: 4,350 mm + 1,350 mm (Approx. 171.3 inches + 53.1 inches)

• Prime Mover (Main Engine): Dongfeng Longqing 350 HP (Diesel, Euro VI compliant)

• Auxiliary Engine (Special Purpose): Cummins 170 HP 6-Cylinder Turbocharged

• Water Tank Capacity: 12 m³ (Approx. 3,170 US gallons) - Stainless steel construction

• Debris Bin Capacity: 10 m³ (Approx. 2,642 US gallons) - Stainless steel construction

• Total Capacity: 22 m³ (Approx. 5,812 US gallons)

• Sweeping Width: Please refer to technical drawings

• High-Pressure Wash Reel: 20 meters (Approx. 65.6 feet) with high-pressure water gun

• High-Pressure Pump Pressure: 10 MPa (Approx. 1,450 PSI)

III. Dimensions, Materials & Design Concept

• Tank Capacity Configuration:

  • Water Tank: 12 m³ stainless steel construction with anti-overflow and low water level alarm

  • Debris Bin: 10 m³ stainless steel construction with anti-overflow alarm and self-cleaning function

• Material Quality: Both water tank and debris bin are constructed from high-grade stainless steel with corrosion-resistant properties, ensuring longevity under continuous heavy-duty operation. The stainless steel nozzles deliver reliable water distribution for cleaning operations. The Taiwan Xin Feng - Luoyang North Glass maintenance-free fan provides reliable suction performance with minimal maintenance requirements. The reinforced frame construction with thickness appropriate for heavy-duty applications ensures structural integrity under full load.

• Design Philosophy: The vehicle embodies a "Massive Capacity, Maximum Efficiency" design concept. The tandem axle configuration (4350+1350 mm) provides exceptional stability and load distribution for large-capacity operation. The combination of a 350 HP main engine and 170 HP Cummins auxiliary engine ensures powerful performance across all operating conditions. The pre-front two sweeping brushes and mid-mounted suction disc configuration delivers comprehensive cleaning coverage for urban road cleaning and highway maintenance applications.

IV. Detailed Structure & Component Advantages

• Engine & Transmission: The vehicle features a dual-engine configuration specifically designed for heavy-duty applications:

  • Main Engine: Dongfeng Longqing 350 HP diesel engine (Euro VI compliant) provides powerful and reliable driving performance with excellent fuel efficiency

  • Transmission: Heavy-duty transmission matched to the 350 HP engine ensures smooth power delivery and optimal torque distribution

  • Auxiliary Engine: Cummins 170 HP 6-cylinder turbocharged engine independently powers all cleaning functions, ensuring consistent performance regardless of driving speed

  • The high-quality maintenance-free automatic clutch protects the auxiliary engine during start-stop cycles, reducing maintenance requirements and extending component life

  • This dual-engine system represents the pinnacle of heavy-duty sweeper technology

• Chassis & Suspension: The Dongfeng Tianlong tandem axle chassis (4350+1350 mm wheelbase) provides exceptional stability and load-bearing capacity:

  • Front Axle: Heavy-duty design rated for the massive 22 m³ total capacity with reinforced kingpins and bearings

  • Rear Tandem Axles: Dual rear axles distribute the load evenly, ensuring stability even when fully loaded with 10 m³ of debris and 12 m³ of water

  • Frame: Reinforced double-layer frame construction with high-strength steel for maximum durability under extreme conditions

  • Suspension: Heavy-duty leaf spring suspension calibrated for optimal ride quality and load distribution

  • This configuration ensures stable operation even under the most demanding conditions, including highway cleaning and industrial site maintenance

• Sweeping & Washing Configuration: The advanced cleaning system features:

  • Pre-Front Two Sweeping Brushes: Positioned ahead of the front axle for optimal debris collection before wheels pass, preventing compaction

  • Mid-Mounted Suction Disc: Centrally located for efficient debris pickup with adjustable height for different road surfaces

  • Liwo motors powering the brush system for reliable operation with variable speed control

  • German Pinfu High-Pressure Pump: Delivers cleaning pressure of 10 MPa (1,450 PSI) for effective dirt removal from even the most stubborn surfaces

  • Stainless Steel Nozzles: Corrosion-resistant nozzles ensure reliable water distribution and long service life

  • 20m High-Pressure Wash Reel: With high-pressure water gun for extended reach cleaning of barriers, signs, and hard-to-access areas

  • Pneumatic Front Wash: Air-operated front washing for additional cleaning capability on slopes and inclines

  • This comprehensive configuration provides effective dust control and prevents secondary pollution

• Hydraulic & Control Systems: The system incorporates premium components for maximum reliability:

  • HaiDeruiwo solenoid valve groups for responsive hydraulic control with precise metering

  • HaiDeruiwo hydraulic cylinders for durable and reliable operation with chrome-plated rods

  • Liwo motors for brush drive systems with overload protection

  • Siemens control switches for precise electrical management and circuit protection

  • PLC One-Touch Control System for simplified operation with programmable cleaning sequences

  • Bidirectional operation buttons for operator convenience on either side of the vehicle

  • These components represent the latest in sweeper control technology

• Vacuum & Filtration System: The core cleaning system features:

  • Taiwan Xin Feng - Luoyang North Glass maintenance-free fan for reliable suction performance with high airflow capacity

  • Manual pump emergency system for backup operation in case of primary system failure

  • Reverse gear suction disc auto-retract function protects equipment during reversing maneuvers

  • Debris bin self-cleaning system reduces maintenance frequency and extends component life

V. Product Features & Chengli Group Advantages

• Advanced Cleaning Configuration:

  • Pre-Front Two Sweeping Brushes: Positioned ahead of the front axle for optimal debris collection before wheels pass, preventing debris compaction

  • Mid-Mounted Suction Disc: Centrally located for efficient debris pickup with 22 m³ total capacity support

  • German Pinfu High-Pressure Pump: Delivers 10 MPa (1,450 PSI) cleaning pressure for stubborn dirt and grime

  • Stainless Steel Nozzles: Corrosion-resistant for long service life in all weather conditions

  • 20m High-Pressure Wash Reel: With high-pressure water gun for extended reach cleaning of curbs, barriers, and signs

  • Pneumatic Front Wash: Air-operated front washing for additional cleaning capability on inclines

  • Maintenance-Free Fan: Taiwan Xin Feng - Luoyang North Glass fan reduces operating costs and downtime

  • Stainless Steel Construction: 12m³ water tank and 10m³ debris bin for maximum durability and corrosion resistance

  • Maximum sweeping width optimized for highway lanes and airport runways

• Intelligent Features:

  • PLC One-Touch Control System: Simplified operation with programmable logic control and preset cleaning modes

  • Bidirectional Operation Buttons: Controls accessible from both sides for operator convenience during curbside operation

  • Water Tank Alarms: Anti-overflow and low water level alarm system protects pump from damage

  • Debris Bin Alarms: Anti-overflow alarm prevents overfilling and spillage

  • Debris Bin Self-Cleaning: Automatic cleaning function reduces maintenance frequency and manual intervention

  • Multiple Voice Prompts: Audio alerts for various operating conditions including startup, low water, and full bin

  • Right/Rear Working Camera: Enhanced visibility during operation with dedicated displays in cab

  • Reverse Gear Protection: Suction disc auto-retract function during reversing prevents damage

  • LED Arrow Light: Rear-mounted for enhanced safety during operation in traffic

  • Manual Pump Emergency System: Backup operation capability ensures job completion even if primary system fails

• Operational Advantages:

  • Massive Capacity: 22 m³ total capacity (12m³ water + 10m³ debris) enables extended operation without emptying, maximizing productivity

  • Powerful Performance: 350 HP main engine + 170 HP auxiliary engine for demanding applications including steep grades

  • Exceptional Stability: Tandem axle configuration (4350+1350 mm) ensures stable operation even at highway speeds

  • High-Pressure Cleaning: 10 MPa (1,450 PSI) cleaning pressure for stubborn dirt, oil stains, and compacted debris

  • Extended Reach: 20m high-pressure wash reel for hard-to-access areas including medians and barriers

  • Reduced Maintenance: Maintenance-free fan and automatic clutch lower operating costs and increase uptime

  • Operator Friendly: PLC control, bidirectional buttons, and voice prompts simplify operation and reduce training requirements

  • Comprehensive Safety: Multiple alarms, cameras, and auto-retract function ensure safe operation in traffic

  • All-Weather Operation: Designed for reliable performance in all seasons and weather conditions

• Smart City Integration:

  • Compatible with fleet management systems for optimal route planning and fuel efficiency monitoring

  • Real-time operational data monitoring capability for performance tracking

  • Suitable for green public works and sustainable infrastructure maintenance projects

  • Meets requirements for LEED certified construction site maintenance and environmental compliance

  • Supports carbon reduction initiatives through efficient engine management

• Applications:

  • Highways and expressways requiring high-speed cleaning

  • Airport runways and taxiways with strict FOD (Foreign Object Debris) prevention requirements

  • Port and seaport facilities handling heavy cargo traffic

  • Large industrial complexes with extensive paved areas

  • Mining and heavy industrial sites requiring robust equipment

  • Major urban arteries and ring roads with high traffic volume

  • Tunnel cleaning operations requiring powerful suction

  • Bridge and overpass cleaning with specialized access needs

  • Large municipal squares and public spaces for special events

  • Construction site perimeter roads with heavy debris loads

  • Military installations requiring reliable heavy equipment

  • International border crossings and customs facilities

• Chengli Group Advantages:

  • Industry Leadership: As a premier Chinese special vehicle manufacturer, Chengli combines decades of experience with advanced manufacturing technology and continuous innovation

  • Heavy-Duty Expertise: Chengli specializes in large-capacity sanitation vehicles for demanding applications, with proven performance worldwide

  • Quality Manufacturing: ISO9001 certified production facilities with advanced robotic welding, precision assembly, and rigorous quality control

  • Comprehensive Support: Extensive service network ensures prompt after-sales support, genuine parts availability, and technical assistance

  • Customization Capability: Chengli offers tailored solutions to meet specific municipal and industrial requirements, including custom sweeper configurations for unique applications

  • Export Experience: Successfully exported to markets worldwide with full compliance with international standards and regulations

  • Certified Manufacturer: Holds ISO14001 environmental management certification and meets all national vehicle standards and export requirements

  • Complete Product Line: From compact sweepers to massive tandem axle models, Chengli offers solutions for every application and budget

  • Proven Track Record: Thousands of Chengli sanitation vehicles operating successfully in cities worldwide, with documented performance and reliability

  • Innovation Leader: Continuous investment in R&D ensures Chengli remains at the forefront of sanitation technology, incorporating customer feedback and emerging trends

  • Value Proposition: Chengli delivers exceptional value through competitive pricing, superior quality, and comprehensive after-sales support

  • Partnership Approach: Chengli works closely with customers to understand their unique needs and develop long-term solutions