Trolley Conveyor

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Trolley Conveyor

 

a continuously operating device for moving various, primarily packaged and piece, materials within a shop. It consists of a enclosed, suspended, single-rail track, moving trolleys (carriages) with cargo hangers (hooks, clamps, stands), a tension device, and a drive element such as a chain or, more rarely, a steel cable, which is secured to the trolleys and set in motion by one or several drive systems.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
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Overhead trolley conveyor and spindle conveyor single or multipass units are available
Another type of overhead system that provides a less costly alternative to power-and-free units is the trolley conveyor. These conveyors typically have just one chain instead of the two chains that comprise power-and-free units.
Some trolley conveyors are also manufactured without power.
A trolley conveyor is any type of conveying system whereby a load carrier is suspended from or riding on an assembly of wheels, bearings, and brackets (the "trolleys").
The power-and-free conveyor is a special type of trolley conveyor designed with the specific feature of accumulation in mind.
The heart of the highly mechanized and highly productive operation was a trolley conveyor with suspended carriers on which workers performed virtually all major assembly work.
If trolley conveyors, using hanging baskets or buckets, have been used to transport small to medium sized castings from the shakeout, the basket or bucket can be emptied into a tumble blast loader or transferred directly through a cabinet blast with a minimum of manual handling.
Trolley conveyors are continuous flow devices with no provision for accumulation or queuing.