Question 1

Chain conveyor design - the basic chain conveyor design consists of a through with either vertical or sloped sides which contain the material as the chain is pulled through and a trough or support rails to carry the return side of the chain. - wear strips are usually attached to the bottom or carrying side to increase the service life of the conveyor. These strips are replaceable

Accepted Answer

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Question 2

3 Main classes of chain conveyor designs fall into are:

Accepted Answer

1. parallel strand conveyor 2. gravity drop drive conveyor 3. s - drives conveyor

Question 3

Chain Conveyors - On the parallel strand conveyors, the top and bottom chain strands are as close to parallel as possible and the drive is located at head end> . The conveying strand can be top or the bottom chain. If the top strand is used, a divider plate/bar supports the chain.

Accepted Answer

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Question 4

Chain Conveyors - Gravity drop drives, the conveyors is on a slope and the drive sprocket is above the floor level which allows the weight of the chain to maintain contact with the drive sprocket. The drive sprocket is located on the return side of the head drum and should be at least 4 ft from the floor.

Accepted Answer

head O drum drive O sprocket O - tail drum

Question 5

Chain Conveyors - S-drives are used when long, heavy load chain conveyors are required because this type of drive allows engagement of the maximum number of drive teeth on the sprocket. An S- drive can be used with almost any chain type. The drive can be located at any position on the return.

Accepted Answer

head . O s-drives can be jag/bump in drum reverse to clear jump up drive O O sprocket 0 adjustable O tail drum take up

Question 6

Chain Conveyors Chain types are:

Accepted Answer

- combination chain - pintle and H class mill chain - drag or refuse chain - fabricated chain - detachable chain - transfer chain

Question 7

Chain Types - Combination chain Combination chain consist of a cast steel black or barrel with 2 cast side plates connected to each other with 2 steel plates and steel pin. Used in rough, dirty environments and in both drive and conveyor applications. Small pitch chains are often used with flight attachments as conveyors. There is a different in side plate hole and rivet styles, to take care when installing links. Also, there is an interference.

Accepted Answer

-Fit between the pin boss and side plate. Do not grind the pin boss to aid in assembly because this leads to a premature chain failure.

Question 8

``` Chain Types - Pintle and H-class mill chain (pintle chain can be change by ally and pitch) ``` Each link of the pintle chain is a one- piece casting of malleable iron with both barrel and side bars. Pintle chain is available in class 400 and class 700. Power transmission and conveying requires class 400. The 700 class has a longer pitch and is a heavy duty chain used primary as a conveyor.

Accepted Answer

The H-class mill chain has a heavier construction and flanged wearing shoes cast onto the bottom surface for applications with abrasive materials. Available H-class mill chain pitches range from 1.654 inches to 4.00 inches.

Question 9

Chain Types - Drag or Refuse chain Drag chain links are one -piece castings that commonly have large pitches of 5 to 12 inches. The cast steel links are available with attachments to aid in transportation or scraping abilities.

Accepted Answer

- If manganese is heated above 500 F when is being repaired, it must then be heated to 1850 F then quench.

Question 10

Chain Types - Fabricated chain Fabricated chain are stronger and more accurately made than cast chains. Due to their steel construction, many varied attachments can be welded directly onto chain to suit the particular need.

Accepted Answer

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Question 11

Chain Type - Detachable chain Detachable chain is one of the simplest chain types because it requires no special tools to assemble or disassemble. This chain is primary for slow speed, ONE DIRECTION CONVEYORS. And come in pitches 0.9 inches to 4 inches.

Accepted Answer

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Question 12

Chain Type - Transfer chain Transfer chain is available in rooftop ( also known as camelback) and roller top designs. Both rooftop chain and roller top chain are used in multiple strands at low speed. The material conveyed is transferred to the chain at 92 to the direction of chain travel. Build for side impact.

Accepted Answer

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Question 13

Transfer chain - Rooftop Rooftop chain is modified cast pintle chain with a raised solid top, usually in the shape of a roof. When these chains run in a trough, only the tops of the link protrude. Take care when installing or repairing rooftop chain as it bends in one direction only.

Accepted Answer

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Question 14

Transfer chain - Roller top chain Roller top chain has raised brackets into which are fitted. The rollers are parallel to the direction of the chain travel and form an almost continuous line.

Accepted Answer

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Question 15

Flight Conveyors With flight conveyors, all you need in order to enable the chain to convey the material is for the flight to be either welded or fastened to the chai links. This type of conveyor is clean-out drag under a conveyor belt or waste conveyor.

Accepted Answer

Same larger flight conveyors have a double strand with the flight attached cross the width of both chain stands. This can present a problem after the chain has started to stretch and the links have worn. If both strands have even wear, the slack can be taken up with the adjustment of the take up at the tail end. If the slack can't be taken out thru take -up, link must be removed. In case of combination chain, 2 pitches or links must be removed.

Question 16

Sprochets The pitch of the sprochet must be the same as the chain. Tooth width is determined by the width of the sidebars with allowance for clearance. Sprochets may have any of the following: 1. they are made from iron, steel or plastics 2. they have a solid or split hub 3. they have a solid body or spokes

Accepted Answer

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