Tension Linkages Using Engineering Steel Chains

TENSION LINKAGES USING ENGINEERING STEEL CHAINS 

The engineering steel chains normally used in tension linkages are relatively heavy chains. They are usually the bar-link or block and bar types of chain, and they are much larger in size and much stronger than the leaf and other chains used for lighter tension linkages. 

Some tension linkage chains of the engineering steel bar-link type are among the heaviest, most 

FIGURE 8-8 Standard leaf chain lacings and dimensions. 

Most heavy tension linkage chains are simple designs. They usually consist of heavy blocks, bars, and leaves with heat-treated pins. The other components are not always hardened. Bar-link and leaf chains are very similar in concept and function, but manufacturing methods differ greatly. 

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TENSION LINKAGES USING ENGINEERING STEEL CHAINS... 

Many different types of engineering steel chains are used in a wide variety of apphcations. Most engineering steel chains are used in conveyors, bucket elevators, and tension linkages. Only a few are used in drives. Space does not permit a discussion of all the different types of engineCTing steel chains mentioned in chapter 2. Only straight sidebar chains, with and without rollers, for conveyors and bucket elevators, and offset sidebar chains for drives will be discussed. Welded steel chains and block and bar chains are beyond the scope of this chapt. ... 

Engineering steel chains in various styles of bar-link or block and bar chain are used for tension linkages. These types of chains will be discussed later. 

Engineering steel tension linkage chains are used in the hold-down apparatus of rock drills and the ladle-tilting devices in steel mills and foundries. They are used in hydraulic lifts and counterweight balances on the arms of radial drills. And they are used in transmission systems between doubleacting hydraulic cylinders and their shafts. Two such unusual applications are shown in Figure 8-17 and Figure 8-18. 

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