Concrete mixer trucks are specialized equipment with inherent risks, so users must pay attention to various details to ensure their safety. Here are some specific guidelines:
- Secure Chutes on Highways: When driving on highways, the extended chute must be flipped and securely fastened to the discharge chute using hooks. Then, turn it to a vertical position relative to the truck body and lock it with the locking device to prevent shaking, which can cause accidents and affect other vehicles.
- Follow Concrete Specifications: Ensure the volume, quality, and slump of the transported concrete meet the specified requirements.
- Empty the Drum Before Loading: When parking the mixer in open areas, reverse the drum before loading to empty any accumulated water (or rainwater) and debris to maintain concrete quality.
- Wear Protective Gear: When working near the discharge chute or hopper, wear protective gear. Avoid approaching the hopper and mixing port, peeking inside, or touching the rotating drum with your hands.
- Inspect and Test New Trucks: New trucks must be inspected and tested before official use, ensuring everything is functioning correctly.
- Adjust for Evaporation: If, upon delivery, the moisture has evaporated, and the slump is too low, add water to the drum. Rotate at 12-14 rpm for 30 revolutions before unloading.
- Limit Continuous Operation: Continuous operation of work devices should not exceed 8 hours.
- Check Height and Weight Limits: When passing through bridges, tunnels, or warehouses, be mindful of height clearances and road weight limits to avoid damaging the mixer.
- Keep Drum Rotating: During empty running and concrete transport, the mixing drum must keep rotating to prevent wear on rollers and tracks and to avoid concrete segregation.
- Maintain Water Levels: Always keep the water tank full for emergencies.
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