EPC Companies means that the company is entrusted by owner to undertake the design, procurement, construction, commissioning and other processes in accordance with the contract. This kind of undertaking could be in whole course or just several stages. Generally speaking, the company is responsible for the quality, security, expenses and progress of contracted projects under lump sum contract.
In the EPC pattern, engineering not only includes concrete design, but also general plan of overall construction projects, scheme of organization management and other specific work. Procurement is not material purchase of construction equipment in the general meaning. It mainly means the procurement for professional equipment and materials. Construction consists of constructing, installing, commissioning, technical training and etc. The stacker reclaimer boom belt conveyor design could operate in two directions and start with load. Drum is one of boom conveyor components. After being installed and welded, the drums should be through the stress relief and anneal handling. The post-assembly drums need to carry on static balance test. The surface of transmission drum is cast with 12mm rubber layer and diamond grooves, which enlarge the friction coefficient between transmission drum and belt. Roller adopts ratio-frequency welded tube with high accuracy as roller skin. The bearing house is made up of steel plate. The bearing house has many advantages such as light weight, certain elastic deformation which could eliminate bending stress. The bearing with ample clearance could make roller carrier shaft reduce friction resistance in the normal deflection. The cavity of the bearing adopts long-lasting lithium grease, being equipped with inside sealing, labyrinth seal, shaft-end seal.辑.
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