A conveyor system is used to move materials from one place to the other. Conveyors help in transporting bulky and heavy materials. These machines are particularly useful for remodeling work where huge amounts of debris need to be removed from inside an existing structure.
A modular design of the conveyor line makes carriage of materials round corners easier. Also the length and position of the line can be adjusted according to the working area. Movement of materials to and from a construction site is made easier, hassle-free and economical with conveyors.
Among the different types of conveyors, the powered roller conveyors are very popular particularly in the warehousing and logistics industry. The roller conveyors are stronger, last longer than belt conveyors and can carry the heaviest of loads. They move with the help of bearings. Some manufactures supply pre-lubricated bearings which minimize maintenance cost to a great extent.
Conveyor rollers can be made from mild steel, stainless steel, PVC or aluminum. The Food processing industry uses stainless steel or PVC rollers which are custom designed to spray water, thereby washing the materials being carried. The different types of rollers are:- Gravity rollers High speed or low noise rollers Grooved Rollers Corrosion resistant rollers Chain Driven rollers
There are three main kinds of roller conveyor systems used in the manufacturing and distributing applications and based on its application, the most suitable kind is chosen.
Gravity roller conveyors run without power and the bearings support the rollers on the shafts. Formed or structural punched frames contain these shafts by either retaining pins or internal springs. Driven by the forces of gravity, gravity roller conveyors allow the product to be free-wheeled manually (horizontally) or to fall over a certain distance with a slight decline.
Lineshaft roller conveyors have a single shaft that runs below the rollers for the length of the conveyor frame. On the shaft there are a series of spools; one spool for each roller. Rubber o-rings run from spools on the powered shaft to each roller. The shaft is then powered by an electric motor and the rubber o-ring acts as a chain between the spool and the roller causing rotation. The rotating of the rollers pushes the product along the conveyor.
Pallet roller conveyors consist of thick walled rollers with sprockets attached to the ends that connect the rollers to the motor and facilitate the rotation of the rollers. There are different ways the pallet conveyor systems are driven. This type of systems may have chain to chain or tangential, or one common chain drive mechanism. The side frame in pallet conveyors is fully enclosed and an external shaft mounted motor is present. These conveyors have electronically switched “accumulation zones” and different sections of the conveyor can effectively run at different speeds, or stop altogether, independently of one another.