A belt drive is a frictional drive that transmits power between two or more shafts using pulleys and an elastic band. They are able to meet high-power demands while being extremely safe, efficient, durable and cost friendly.
The belt is under tension while the pulley is moving. The belt tension, along with the static belt tension, is responsible for the transfer of mechanical force. On the opposite side of belt tension is belt slack. Slack occurs when the driving pulley pushed the belt away which results in fluctuating loads on the belt. If those loads are not considered in the design process, it can cause belt failure. [13]
We can break down belt drives into seven main groups:
Open Drive Belt
Closed or Crossed Belt Drive
Fast and Loose Cone Pulley
Stepped Cone Pulley
Jockey Pulley Drive
Quarter Turn Belt Drive
Compound Belt Drive
Can you find the Belt Drive on the Lego Display? Keep scrolling for a hint.