Dear Manwar,

It is customary to place the takeup assy close to and after the drive to control the minimum slack side belt tension to prevent drive pulley slip.

It is not necessary to do so if the drive slip is controlled. An incline belt can have a belt return strand with enough force of gravity applied to the slack side to allow auxilliary placement such as at the tail. THe further advantages of the tail takeup are;

1. uses the minimum number of pulleys

2. eliminates dirty side belt contact

3. improves conveyor shock wave propogation during a power outage or disconnect

THe rules are:

1. eliminate drive slip

2. control belt sag

3. control belt tension variations in vertical and horizontal curves

4. minimize the number of pulleys

5. minimizae pulleys with dirty side belt contact to prevent buildup

6. minimize shockwave damaging intensity

7. minimize the takeup mass to the lowest practical level

8. minimize costs ■

Dear all

location of counter weight is a debatable issue Mr nordell have indicated most of the advantages of Horrizontal gravity take up however i would like to add following

2Additional space should be available on back side of tail pulley

3.we save 3 pulleys compared to vertical Gravity take up however we have to provide additional equipment like take up trolley with wheel arrangement, take up tower, rope and sheave arrangement which nullifies cost of 3 pulleys

4.In large conveyors unsupported belt length between loading point and take up trolley becomes too large

5 In case of long conveyors more than 1 km response time to drive is more and is not preferred to have take up at tail end

6.0 take up trolley should be properly designed to avoid screwing of trolley

A R SINGH ■