The Mechanical Handling and Storing of Material
Forfatter: A.-M.Inst.C E., George Frederick Zimmer
År: 1916
Forlag: Crosby Lockwood and Son
Sted: London
Sider: 752
UDK: 621.87 Zim, 621.86 Zim
Being a Treatise on the Handling and Storing of Material such as Grain, Coal, Ore, Timber, Etc., by Automatic or Semi-Automatic Machinery, together with the Various Accessories used in the Manipulation of such Plant
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68
THE MECHANICAL HANDLING OF MATERIAL
substantial, and therefore resists the action of the hot coke better than a plate, which
offers a larger surface to the damaging effect of this material. . .
Cable Trough Conveyors.—These differ from those previously described in that
the pulling or pushing element is a cable instead of one or more chains, and that the
iron or steel disc attachments which propel the material have no additional support,
such as skidder bars or rollers, the trough forming the only support.
The trough is either V or U shaped, and generally of wood lined with sheet iron,
or of iron plates only, according to the nature of the material to be conveyed.
The rope is generally a cable of 1 in. diameter, and the disc flights are of cast iron,
in halves, and are clamped on to the cable with bolts. The coupling generally used is
Figs. 82 and 83. Timber Conveyors.
in design the same as the ordinary disc flight shown in Figs. 84 and 85, the ends of
the rope being lapped and passed through the clamp, with the ends of the rope diverted
to either side so as to fit the gaps of the sprocket wheel. This kind of conveyor is
suitable for conveying light and bulky material, preferably in a straight line and down an
incline. It is well adapted for handling timber, blocks, chips and shavings, peat, pulp,
hay, etc., but is also sometimes used for heavier materials.
a The speed of travel is 100 to 120 ft. per minute. Figs. 84 and 85 give two
longitudinal and two cross sections of two forms of trough cable conveyors.
o Fig. 86 illustrates a complete installation of this type of conveyor, showing the two
terminals in plan and elevation, as well as a cross section through the conveyor.
Fig. 87 shows this type of conveyor fitted with metal troughing. It also illustrates
the manner in which two such conveyors are driven at right angles.
The method of feeding and withdrawing the material at intermediate points is
simple with this conveyor. The former presents no difficulty, as the trough is open, and