engleski

Some considerations on the application of Wolfrom planetary gear trains

In engineering it is sometimes necessary to achieve very precise regulation with immediate lockdown of the regulated element in the desired position, or to achieve a very high reduction ratio in a confined space. For example, such needs arise in the design of reduction gear for the operation of valves, construction hoists, and constant speed propellers. A Wolfrom planetary reduction gear seems to cater for all these needs by providing high reduction ratios in a single stage, and even becoming self – locking in certain designs. The purpose of this article is to offer an insight into the design and operation of Wolfrom planetary gear trains. The efficiency of a Wolfrom gear train is discussed, as well as the advantages and disadvantages of their use. An overview of current applications is given and the prospects for future applications discussed, with remarks being given about the selection of planetary gear trains adequate for the intended application.

planetary gear ; Wolfrom gear train ; reduction gear ; regulation technology ; hoist ; constant speed propeller

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