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The chain-driven belt conveyor is almost the ultimate in traction and power, equalled only by the Plate Link or Slat conveyor types. It is the belt equivalent of the Chain Driven Roller Conveyor....
The chain driven belt conveyor is almost the ultimate in traction and power, equalled only by the Plate Link or Slat conveyor types. It is the belt equivalent of the Chain Driven Roller Conveyor.
A standard belt conveyor relies on friction between the drive roller and the belt in order to move the belt. Obviously, under sufficient load, this friction will be overcome, and the belt will stop moving whilst the drive-roller ‘skids’ around uselessly.
Rather than having a simple friction drive, the Chain driven conveyor has its belt is bolted to a series of cross-members, the ends of which connects to chains running down each side of the conveyor. The chains connect to the motor via a sprocket. This produces a high degree of linkage between the belt and the motor, making slippage impossible.
The motor moves the chain, which moves the welded-on cross-members, which are through-bolted onto the belt, hence moving the belt. The conveyor belt cannot "slip" unless the chains break, which would take phenomenal force, or the sprocket breaks, which would take even MORE force.
The conveyor CAN stall if something jams the belt/cross-member assembly, but it can't slip. In point of fact, this technique requires current overload monitoring of the motor, as if the belt DOES jam, then the motor could be damaged.
This technique is usually associated with very large conveyors, such as the waste recycling conveyor pictured here. However, the same technique can be scaled down for smaller conveyors.
The system still uses a rubber belt, so it is potentially vulnerable to sharp or abrasive loads that can puncture or cut it. For such types of load, the Plate Link Conveyor might be a more suitable choice. However, the belt is very easy to repair, as each section between consecutive cross-members can be replaced independently of the rest of the belt.
The belt also has an advantage over the plate link conveyor in that the carrying surface is flexible. If a large, heavy load is ‘dumped’ from a height onto the conveyor, the belt will flex and absorb the impact. The same load violently dumped onto a platelink conveyor could dent one of the rigid plates.