Applications
6.3.6 Block Chain (Bar and Pin) Large conveyance: The steel industry, conveyance of sand and earth, shuttle traction Application Example Block Chain is used for cooling high-temperature steel bars, seamless pipes, or for pushing red-hot slabs and billets, for example (Figure 6.22). In addition to the steel industry, Block Chain is used for vertical conveyance of sand and earth, and for shuttle traction.
Figure 6.22 Block Chain
Construction and Features This chain is usually composed of three parts: two outer plates and one (or sometimes two) inner plate (block) that are connected with pins. The tensile strength ranges from 309 to 2,720 kN. In comparison to roller chain, Block Chain has the following features: (1) Greater impact resistance due to the strong construction and high rigidity. (2) Higher strength considering chain weight. (3) All the main parts are heat-treated for greater wear resistance against the guide rails. (4) Usually the bottom side of the plate slides on the guide rail; the chain does not have rollers. It’s possible to push and carry conveyed objects on the guide rails using special pushers (dogs) attached to the chain (Figure 6.23).
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