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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150 THE MECHANICAL HANDLING OF MATERIAL
means of the angle-bars on which the chain drags. The chain has a pitch of 12 in.,
and the pins in the hinged joints are 1T9K in. in diameter by 8 in. in length in the bearing.
Each link consists of a cast block, with eyes at each end for the joint pins, and provided
with an arm on each side extending to the sides of the trough, the ends of these arms
sliding on the angle-bars fixed at the corners of the trough. The links are connected
together by two steel side links and hinge pins. These side links have slotted ends, so
that they can be passed over the head of the pin when the side links are at right angles
with the chain blocks. When in line with the blocks the projections at the sides of the
blocks prevent the side links from becoming disengaged from the pins. The wear of
the chain on the trough is minimised by hard cast-iron shoes fitted thereto. There being
only one chain, only one sprocket wheel is required at each terminal; this is made with
Fig. 202. West’s Hot Coke Conveyor.
teeth 6J in. in width. The chain described is designed for conveyors 500 ft. in length,
running at a speed of about 40 ft. per minute. During the use of the conveyor, quenching
water is run into the trough as is usual with all hot coke conveyors.
Wild's Hot Coke Conveyor.—This conveyor consists of a substantial trough,
2 ft. to 2 ft. 6 in. in width by 9 in. in depth, which may be either of cast iron or of steel.
In Fig. 203 it is shown supported by cast-iron brackets, to which are secured the rails
for supporting the two strands of the chains; the return strand of the chain is shown
beneath the trough, both chains being outside the trough and secured on either side to
the push-plates, so that only the scraper comes in contact with the hot coke. The chains
are usually composed of ordinary welded links of 12 in. pitch. They are, however,
sometimes made of manganese steel. Every second link carries a push-plate, so that
these plates are 24 in. apart. The push-plates are connected by means of arms to the
axles, which carry 6-in. flanged rollers, 1J in. in width on the face. The advantage of