When the Medium-Sized Concrete Mixer is in use, in order to ensure safety, high efficiency and long-term stable operation of the equipment, you need to pay attention to the following matters:
I. Inspection and preparation before operation
Safety equipment: Operators should wear personal protective equipment suitable for the working environment, including safety helmet, goggles, protective gloves, protective shoes, etc.
Equipment Inspection:
Check whether the parts of the Medium-Sized Concrete Mixer are in a safe condition, such as power supply, transmission part, mixing blades, etc. whether they are normal, whether they are loose, wear and tear.
Check whether the power supply voltage meets the requirements (usually the rated voltage is 380V, and the voltage drop shall not be less than 10%, but not higher than 5%).
Check whether the lubrication (grease) of each gearbox and lubrication part is sufficient and good.
Check whether the wiring of the motor and electrical components is secure, and ground the motor with a wire to ensure safety.
Check whether there is any foreign matter accumulating in the mixing cylinder, hopper and track frame, if so, it should be cleaned up in time.
Check whether the wire rope is neatly arranged on the reel, if loose, it should be rewound.
Check whether the lifting of the hopper is flexible, whether the braking and traveling switch action is sensitive, accurate, safe and reliable.
Environment check: make sure there are no other people or objects around to avoid accidental collision.
Second, the operation specification in the operation
Starting and running:
Before starting, the mixer should run empty, check the rotation direction of the mixing cylinder or mixing blade, and whether the operation and braking of each working device are normal or not, and confirm that there is no error before operation.
After the Medium-Sized Concrete Mixer is started, it should make the mixing drum reach normal speed and then feed, and add water in time after feeding.
Adding new material must be unloaded after all the original concrete in the Medium-Sized Concrete Mixer is discharged, and the Medium-Sized Concrete Mixer must not be stopped halfway or started when the load is full (except for reverse discharging).
Safety distance: Keep a certain safety distance and avoid approaching the rotating parts such as mixing blades to avoid accidental injury.
Feeding and mixing:
When feeding, it is strictly prohibited to put the head or hand into the hopper and the frame to inspect or probe the feeding situation, and it is not allowed to reach into the mixing cylinder with hands or tools to pick up the materials during operation.
When the hopper rises, it is strictly prohibited to work or walk under it, the bottom of the pit should be set up with a pillow mat for the hopper, and the hopper must be fastened with a chain when cleaning up the pit.
Troubleshooting: If an accident or failure occurs during the operation and the operation cannot be continued, the power supply should be cut off immediately, and the concrete in the cylinder should be cleaned up and then repaired.
Third, maintenance and repair after operation
Cleaning and inspection:
After the operation, the Medium-Sized Concrete Mixer should be fully cleaned, operators need to enter the cylinder cleaning, you must cut off the power supply, set up a person outside the guardianship, or remove the fuse and lock the gate box, and then you can enter.
After cleaning, the Medium-Sized Concrete Mixer hopper should be landed in the hopper pit, such as the need to raise the chain should be fastened.
Equipment Maintenance:
Regularly check the wear and tear of each part, and replace the parts with serious wear and tear in time.
Regularly lubricate the lubrication points of the equipment to keep the equipment in good running condition.
After winter operation, the water pump, water discharge switch and water measuring device should be drained to prevent freezing and cracking.
Parking and storage:
For mobile concrete mixer, when it is parked for a long time or used for more than three months, the tires should be removed for proper storage, and the end of the wheel axle should be cleaned and rust-proofed.
In summary, medium-sized concrete mixers need to pay attention to many aspects of safety and operational norms when in use to ensure the normal operation of the equipment and the safety of personnel.
