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Belt Driven Live Roller Conveyors

15th April 2019

Belt driven live roller is a powered conveyor where the load or product is carried directly on carrying rollers. An endless belt (flat or V belt) drives the carrying rollers. Adjustable height pressure rollers located below the carrying rollers engage the belt with the carrying rollers, providing the power to transport the product. Roller conveyors are designed for level applications that do not exceed 5° of pitch. The product to be conveyed should have a flat and firm conveyable surface and a maximum unit load weight of 150 lb or a live load of 50 lb per ft.

Low Pressure Accumulation

This type of belt driven live roller conveyor employs a low friction belt and is used to accumulate loads of a solid, well packed non-fragile nature.

The carrying rollers are equipped with bushings that ride in a 5° angular slot. The high side of the slot is opposite the direction of load travel. As the load moves along the roller conveyor, the carrying roller bushings rest at the bottom of the slot.

As soon as the load meets an obstruction, such as a blocked load, the belt motion causes the carrying roller bushings to roll up the angular slot, thus relieving some of the pressure between the belt and carrying rollers under the load.

The line pressure developed from the accumulation of loads varies depending on such factors such as size, shape, and weight of loads, but, in general, the line pressure exerted on the lead carton averages 4% to 6% of the total accumulated weight on the roller conveyor.

Two models of low pressure accumulation are available: an end drive that has a 325 lb effective belt pull capacity and a model that is equipped with a center drive and has a 650 lb effective belt pull capacity.

This article comes from lone-star edit released