GSi InterSystems PNEG-2116, Инструкция по установке и эксплуатации

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4. Installation
32 PNEG-2116 Bucket Elevator
10. This procedure uses buckets as counterweights. If buckets are fastened to the belt in consecutive
continuous rows, the strand of belt in the UP-LEG will carry appreciably more weight than the strand
in the DOWN-LEG . Considerable backward pull on the head pulley would result and it would be
much more difficult to advance the belt. Continue the sequence until the full complement of buckets
has been fastened to the belt.
11. When bucket installation is complete, complete initial belt tracking as shown on Page 35 .
Belt Splicing
There are three (3) types of belt splices normally used with elevator belts and each is described in the
following paragraphs. The splicing method should have been selected during installation preplanning as
explained in Elevator Belt Selection
on Page 19 .
IMPORTANT: Regardless of the belt splicing method selected, it is vitally important that the splice be
perfectly aligned. The belt edges at the splice must be absolutely parallel to permit tracking
of the belt and satisfactory elevator operation.
1. Lap Splice: (View A on Page 33.) This is the easiest splicing method. Make sure the belt ends overlap
as shown so the inner belt end does not snag on the pulleys, especially the head pulley which is often
lagged or winged.
2. Butt Splice: (View B on Page 33.) This method of belt splicing makes for a smoother running belt as
there is no ridge at the splice as with the lap splice. Somewhat more belt is required and resplicing
takes somewhat more time than a lap splice since twice the number of buckets must be removed and
reinstalled. On the plus side however, the resultant splice is stronger.
3. Mechanical Splice: (View C on Page 33.) This is a superior splice. It makes for the smoothest running
belt. However, it is also the most difficult splice to make properly. Vulcanized and cemented splices
do not often find application in elevators. The splices are difficult to apply in the field. Also, the
belt may have to be respliced after a short period of operation to compensate for initial stretch.
Regardless of the method used to splice the belt, a set of spreader bars and a cable hoist as shown
in
View D on Page 33 will facilitate splicing.