Theory of Machines: Unit V: Balancing and Vibration
partial balancing of coupled locomotives
Balancing and Vibration - Theory of Machines
The uncoupled locomotives, as discussed in the previous section, have become obsolete. now-a-days.
PARTIAL BALANCING OF COUPLED LOCOMOTIVES The uncoupled locomotives, as discussed in the previous section, have become obsolete. now-a-days. In coupled locomotives, the two or three pairs of wheels are coupled by connecting their crankpins with a coupling rod, as shown in Fig.13.10. So there is no chance of slipping of single pair of wheels on the rails. Thus coupling all the wheels together increases the wheels resistance against slipping on the rails. This results in more tractive effort. In coupled locomotives, the coupling rod cranks are placed diametrically opposite to the adjacent main cranks i.e., driving cranks. Since the coupling rod revolves with the crank pin, it can be balanced completely by adding its proportionate to the respective pins and considering it a revolving mass. It may also be noted that the mass required to balance the reciprocating parts is distributed among all the wheels which are coupled. This results in a reduced hammer blow. But in case of uncoupled locomotives the balanced masses could be distributed on the driving wheels only.
Theory of Machines: Unit V: Balancing and Vibration : Tag: : Balancing and Vibration - Theory of Machines - partial balancing of coupled locomotives
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Theory of Machines
ME3491 4th semester Mechanical Dept | 2021 Regulation | 4th Semester Mechanical Dept 2021 Regulation