| 摘要 |
<p>Lift trucks (12) having two laterally spaced apart motors (56, 58) for lifting a load (16) on a carriage (14) provide excellent forward visability for operators thereof. When the load (16) is unevenly disposed upon the carriage (14), or the lift truck (12) encounters uneven terrain, the lifting components of the lift truck (12) are subjected to unequal stresses. Such unequal stresses, if uncorrected, reduce the useful life of the lifting components, particularly a pair of chain assemblies (70, 72) associated with the carriage (14). A load equalizing system (91) maintains substantially equal tension in the pair of chain assemblies (70, 72) when off-center loading is encountered. The load equalizing system (91) permits one motor (56 or 58) to move a predetermined distance relative the other (58 or 56) in response to off-center loading, which equalizes tension of the chain assemblies (70, 72) and which thus extends the useful operational life of the lifting components. </p> |
