Application of dynamic braking for safe deceleration of bridge or trolley in either direction of travel and under all operating conditions; systems use same drive motors that power bridge or trolley motions, and supply immediate braking whenever power fails or overload relays trip; features of two different types of control systems; circuit diagrams.
Traveling crane operations
Mill Factory
Mill and Factory ; 59 , n 1
1956
2 pages
Article (Journal)
English
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