Mine Dump Truck Summer Maintenance Guide: Five Core Techniques To Tackle High Temperature Conditions

As summer's high temperatures and rainy weather arrive, mine dump trucks face dual challenges of high humidity in underground environments and intense ultraviolet radiation in open-pit mines, leading to a 32% increase in equipment failure rates compared to other seasons (China Mining Equipment Association data). As a technological benchmark in mining transport equipment, Beijun Heavy Industry has released a special summer maintenance program based on 20+ years of mine service experience, using six core techniques to enhance equipment reliability and ensure mining productivity.

I. Engine System: "Heart" Maintenance in High-Temperature Environments

1. Deep Cleaning of Cooling System

Use a high-pressure water gun (pressure ≤8MPa) to flush the radiator surface, removing dust and oil to ensure a 15% improvement in heat dissipation efficiency. The enlarged radiator standard-equipped on Beijun dump trucks (20% larger area than traditional models) can withstand continuous operation in 40℃ environments after cleaning.

Check the coolant freezing point (recommended to be below -35℃) and replace it no later than every 2 years to avoid "boiling" risks. A case study in an iron mine shows that regular summer cleaning of the cooling system reduced engine failures by 40%.

2. Refined fuel system management

Use summer-specific diesel (cetane number ≥45) to avoid "vapor lock" caused by fuel vaporization at high temperatures. The high-pressure common rail system of Beijun dump trucks can adapt to different fuel grades, improving combustion efficiency.

II. Braking and Tires: Safety Frontlines in Wet Conditions

3. Comprehensive Braking System Inspection

Focus on checking brake pad thickness (wear limit ≥2mm) and brake fluid water content (replace if exceeding 3%). The dual-circuit air braking system standard on Beijun models requires shortened inspection cycles to 15 days / 次 in summer.

Test parking brake performance to ensure no slipping on a 20° slope under no-load conditions, avoiding safety hazards on rainy, slippery roads.

4. Intelligent Tire Condition Monitoring

Control tire pressure at 0.7-0.8MPa (5% lower than standard value) to prevent high-temperature tire blowouts; replace tires when tread pattern depth is less than 1.6mm. Beijun dump trucks are optionally equipped with a TPMS tire pressure monitoring system for real-time anomaly warnings.

III. Electrical System: Protection Upgrades in High-Humidity Environments

5. Enhanced Electrical Circuit Waterproof Sealing

Wrap wiring harness connectors with insulating tape, focusing on protecting components like starter motors and sensors to avoid short circuits caused by rainwater infiltration. The electrical interfaces of Beijun models all adopt IP67 waterproof standards, but seal aging should still be checked regularly in summer.

6. Special Maintenance for Batteries

Check the electrolyte level (should be 10-15mm above the plates) and avoid using tap water when replenishing distilled water; control charging voltage within the values specified in the manual to prevent overcharging and overheating.

IV. Beijun Intelligent System: Technological Empowerment for Summer Maintenance

Three Functions of Remote Monitoring Platform

Thermal Imaging Temperature Monitoring: Real-time scanning of key components like the engine and transmission via vehicle-mounted cameras, with automatic alarms when temperatures exceed thresholds (e.g., engine coolant ≥95℃) to detect overheating hazards in advance.

Abnormal Fuel Consumption Analysis: With summer fuel evaporation increasing by 5-8%, the system compares historical data to promptly remind drivers to adjust driving habits (e.g., avoid sudden acceleration).

Maintenance Cycle Warning: Automatically shortens air filter replacement cycles based on summer conditions (adjusted from 500 hours to 300 hours) and pushes maintenance work orders to mobile devices.

V. Driver Operation Specifications: Human Optimization in High-Temperature Scenarios

Start-Up Preheating Adjustment: Shorten idling time after cold start in summer to 1-2 minutes (3-5 minutes in winter) to avoid engine overheating.

Load Balancing Control: Strictly transport according to the rated load (e.g., 25 tons for the UQ-25 model), as overloading can increase tire temperatures by over 20%.

Parking Environment Selection: When working outdoors, park in shaded areas as much as possible to avoid direct sunlight on the cab and reduce air conditioning load.

Industry Data Verification: The Value of Scientific Maintenance

After a copper mine adopted Beijun's summer program, the summer failure rate of equipment dropped from 18% to 9.5%, and the average monthly fault downtime per vehicle decreased by 12 hours. Calculated for a 30-vehicle fleet, this resulted in an annual indirect increase of 150,000 tons in ore production, generating over 12 million yuan in additional revenue. "Summer maintenance is not just about troubleshooting," said Li Ming, Technical Director of Beijun Heavy Industry. "It's about using systematic solutions to minimize the impact of high temperatures on equipment, which is the new maintenance paradigm in the era of smart mining."

With the acceleration of mine intelligence, Beijun Heavy Industry is developing a summer-specific AI maintenance system that will soon achieve fully digitalized processes of "fault prediction - solution push - effect tracking," further enhancing the reliability and economy of summer mining production.