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
■2Ö2
THE MECHANICAL HANDLING OF MATERIAL
empty trucks being raised sufficiently by the chain haulage c to return by their own gravity
to the pit mouth. Beneath the small hopper just mentioned the self-unloaders for the
haulage plant are filled. The trucks are then attached and ascend an incline of 20°, and
by the time point d is reached they are on a level with the top of the ore pockets. The
trucks are then led in the usual way from their own track on to the bridge, where they are
emptied and return again to the starting point, following the track shown by dotted lines
and arrows. The bridge is manipulated by one man, who has his seat in a cab, which is
shown in Fig. 385 on one side of the bridge. The installation is fitted with safety appliances
to prevent any trucks running away on the inclines. The speed of the cable chain is
100 ft. per minute, and with a truck every 12 yds., or 150 trucks per hour, is equal to
225 tons’ capacity. The driving power is provided by a 20 H.P. motor, and one of
10 H.P. for manipulating the bridge.
Figs. 385 and 386. Rope Haulage Plant of the Soc. Anonyme des Hants
Fourneaux & Fonderie de Pont-a-Mousson, France.