Uninterrupted operation of a concrete plant is achieved through scheduled maintenance of all its mechanisms and assemblies, provided for by production regulations. The specificity of operating concrete plant equipment is that the parts of concrete mixers - armor, spokes and blades - operate under conditions of intense abrasive wear. Abrasive wear is caused by the sliding of hard particles of the raw materials used on the softer internal surfaces of the concrete mixer, scratching and tearing off particles of the constituent material from them. Armor, spokes and blades of concrete mixers are classified as wearing parts, although they are made of wear-resistant alloy steels and high-strength cast iron. Approximate values for the service life of the armor and blades of a twin-shaft concrete mixer are:
Armor – 100,000 cycles;
Blades - 60,000 cycles.
The armor in the hull is bolted to make it easier to replace. For uninterrupted operation of the concrete mixer, it is necessary to promptly replace worn spokes, armor and blades.
Parts that wear out quickly include the rollers of the conveyor that feeds inert materials into the concrete mixer. In conditions of discrete inclusions of the conveyor, in accordance with the operating schedule, increased requirements for reliability and strength are placed on the rollers. Therefore, wear of the roller in excess of the permissible standard is not allowed.
In the operating conditions of a concrete plant, the seals of the compressor that services the entire pneumatic system of the plant often fail. The pneumatic distributors that control the pneumatic cylinders wear out. The supply of lubricant is disrupted, leading to breakdowns of pneumatic mechanisms in dusty environments.
Due to the increased abrasive properties of the working environment, the vibrators necessary for collapsing the cement in silos wear out.
Summarizing the above, a list of the main spare parts necessary for routine maintenance of concrete plant equipment is proposed. Having the required quantities of components from the list, you can ensure the operation of the concrete plant for a long time.
Concrete mixer spokes
Concrete mixer blades
Conveyor rollers
armor
CAMOZZI pneumatic valves - 4 pieces
Pneumatic cylinders
Vibrators
Strain gauges.







