The more effective maintenance method of small concrete mixer is the cross operation method, that is, cleaning, lubrication, fastening, adjustment and anti-corrosion. The mechanical equipment management department shall arrange and inspect according to this equipment maintenance method, and implement the equipment maintenance work. After the repair and maintenance of the concrete mixer truck, the repair and maintenance records of the concrete mixer truck shall be made, the faults and causes of the repair and maintenance of the concrete mixer truck, the name, model, quantity, precautions and maintenance personnel of the replaced parts shall be recorded, and then the repair and maintenance records shall be stored in the technical archives of the equipment for future search.
The equipment management department shall pay attention to the inspection, maintenance and repair of small concrete mixer trucks, organize the equipment management personnel to inspect all concrete mixer trucks at least once or twice a month, evaluate (score) the service condition of concrete mixer trucks, and arrange the maintenance, inspection and Maintenance, repair and anti-corrosion work. The small concrete mixer can achieve the effects of low cost, long service life and high efficiency through management, and meet the requirements of concrete transportation.
For the maintenance of small concrete mixer truck, the following standards shall be met in the following aspects:
Water supply system: the water pump and components of the water supply system are complete without leakage.
Engine: no abnormal operation, normal oil pressure and water temperature, proper belt tightness, and clean and effective filter.
Braking system: the hand and foot braking is sensitive and effective without deviation, and the embossing, dragging and pedal stroke meet the requirements.
Lighting system: various instruments are complete, the indication data is accurate, the indicator lights are complete and intact, and the audible and visual signal and alarm system are complete and effective.
Mixing system: the cylinder is in good contact with the supporting wheel without deviation and movement. The blades of the mixing drum shall be free from serious wear and deformation. There is no serious material accumulation in the barrel and at the discharge port.
Lubrication system: the and lubrication devices are complete and intact, the oil circuit is unblocked, the lubrication parts are fully lubricated, and the lubricating oil model, oil quantity and oil quality meet the specified requirements.
Electrical system: the lines of the whole vehicle are complete, and the fixing of connection card meets the requirements. The battery shall be clean and firmly fixed, and the electrolytic liquid level shall meet the requirements (the liquid level shall be 1 ~ 1.5cm higher than the polar plate).
Steering system: the free steering amount of the steering wheel shall not be greater than 30 degrees, the power steering device shall be sensitive and effective, the steering knuckle, arm and steering tie rod shall not be damaged, and the ball pin shall not be loose.
Hydraulic system: the oil pump and motor work normally and the pressure reaches the rated value. The model, quantity and quality of hydraulic oil shall meet the specified requirements. The oil temperature shall not be greater than 80 ℃, and the oil pipe shall be well connected without leakage.
Requirements for the complete machine: the structure of the whole vehicle shall be free of deformation, desoldering and cracking, the bolts shall be free of looseness, and all assemblies, parts and accessories shall be complete. The main working performance reaches the rated index. The whole vehicle is clean and free of concrete accumulation.
Chassis part: the gearbox and transfer case of small concrete mixer truck are free of disorder. The front and rear axle transmission mechanism has no abnormal sound and overheating. The clutch is completely separated, stably combined and reliable. The tire wear shall not exceed the relevant regulations, the air pressure shall meet the regulations, and the spare tire and tools shall be complete
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