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Thread: Shuttle Conveyor

  1. #1
    J-S.Ratelle Guest

    Shuttle conveyor


    I'm looking for a 400 STPH shuttle conveyor for the truck loading. I made some search and everyone suggested me to install steel wheel with a motor and a drive directly on the conveyor and to put the conveyor on rails.

    I'm trying to find an other way to move the conveyor and the name of some supplier for this kind of equipement.

    I need some suggestions.


  2. Dear J-S Ratelle,

    Would you supply more information.

    What type of material are you loading into the trucks (bulk solids such as stone, coal, etc.; boxed goods, finished product such as rebar, beams, etc.)?

    As it appears that you wish to side load the trucks, what is conveyor movement do you need - or can you keep a stationary conveyor and move the truck?

    Do you need a system that will load just one truck, or do you require something that will handle multiple trucks? If the latter, what is the total distance required?

    Finally, what elevations are required? Is the load to be done with a level conveyor, an incline conveyor, or a decline conveyor?

    There are a number of options available to you, depending on your needs.

    Dave Miller
    ADM Consulting
    10668 Newbury Ave., N.W.,
    Uniontown, Ohio 44685 USA
    Tel: 001 330 265 5881
    FAX: 001 330 494 1704

  3. #3
    J-S.Ratelle Guest
    Dear M. Miller,

    Thanks for your reply. Here is more usefull information.

    -The conveyor gone load open and closed truck.
    -The material to be handle will be quick lime at 55 lb/ft3 (0%moisture).
    -Particl size: 0 - 2 1/2in
    -The conveyor capacity: 400 stph.
    -The conveyor will be 70 ft long and will be totaly enclose with a dust collecting system.
    -The conveyor will not be incline and a loading spout gone be installed at the discharge point.
    -Conveyor maximum travel distance: 50 ft
    -The conveyor have to fill one truck at the time.
    -40 trucks gone be fill per day.
    -During the loading the truck gone be on a scale.
    -The conveyor gone be over the truc ,parallel to them, and gone move following the long side of the truck.

    How can I move the conveyor ?

    Respectfully yours,


  4. Dear Mr. Ratelle,

    You have a number of options for single truck loading, some are listed below.

    [1] Put the laoding conveyor on a rail system. The problem with this is that you have to contend with a changing conveyor load point or make the conveyor extendable and retractable.

    [2] Make your conveyor an overhead tripper sytem. The main problems with this include clearance requirements for the trucks and additional dust generation because of the added drop.

    [3] Use an elevated conveyor that feeds a pivoting chute. The main problems with this is the chute length required and those problems associated with the triipper possibility.

    [4] Use a CAP system (CoAxial Pipe conveyor). This system appears to be an elegant solution to both dust control and discharge flexibility. The main problem with it is that it is a relatively new product and does not, therefore, have a history of successes or failures. I first learned of it at and you can obtain information at

    [5] Use wheeled portable truck loading conveyors such as those offered by a number of manufacturers (both troughed belt systems and corrugated sidewall systems). The main problems associated with these are the moveable conveyor load points, dust generation, and the spillage.

    Obviously, there are other solutions, but this should get you started. Of the five possibilities listed above, I tend to favour the CAP or tripper approaches.

    Dave Miller
    ADM Consulting
    10668 Newbury Ave., N.W.,
    Uniontown, Ohio 44685 USA
    Tel: 001 330 265 5881
    FAX: 001 330 494 1704

  5. Hello J-S.Ratelle,

    You already have a good response from the readers with many useful suggestions and probable solutions.
    It has been mentioned by you that the conveyor is required to load bulk material into open as well as closed trucks. The closed trucks immediately puts the restrictions on possible solutions.
    1) If it is a closed truck, then mostly it will have fully open-able rear side. The other sides will not be usable for assess of equipment into the truck.
    2) If the conveyor has to enter into the truck from rear side, it cannot have any support from the truck, and it may require telescopic arrangement for the conveyor discharge point to enter into the truck, and retract backwards as the filling progresses.
    3) The speed of retraction and actual material on conveyor will be have automatic correlation, so that you get balanced loading along full length of truck.

    For more specific suggestions from the readers, I suggest you to mention the truck body dimensions i.e. length width and height of enclosed space where the material is to be placed. Also, the load carrying capacity of the truck. Although you have mentioned 40 trucks in a day, which is not very specific, please specify the number of trucks to be loaded in one hour. How about the loss of time during changing of truck from empty to loaded etc.

    Ishwar G Mulani.
    Author of Book : Engineering Science and Application Design for Belt Conveyors.
    Email :
    Tel.: 0091 (0)20 25882916

  6. #6
    J-S.Ratelle Guest

    Shuttle conveyor : Picture

    Dear M.Mulani,

    Thank you for your reply.

    This seem to be a confusing situation for everybody. So, I attached a picture of the truck and the conveyor.The problem is that we don't know how to move. But, maybe there is a completly different solution to our problem. it It is important to remember that a loading spout gone be install a the end of the conveyor. This gone help for the loading of the closed trucks and it can work with open trucks too.

    Here are the truck specifications:

    -Length of the trailer: 45 to 52 ft
    -Height max: 14 ft
    -Width: 8 ft
    -Load carry capacity:30 stph
    -Loading frequency: 1.5 trucks per hour (24 hour/day)

    I hope that this gone help you to understand the situation.


    J-S Ratelle
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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  7. Dear Mr. J-S.Ratelle,

    Referring to the additional information about the truck, the truck body dimensions such as length width and height mentioned by you, now makes the thing clearer. However, there is still some ambiguity. Please clarify whether you have feed-openings in the roof of truck. If so, you intend to load the closed truck through such openings in the roof. Now, what is the spacing / pitch of such openings in the roof? Please note that when conveyor discharge is shifted from one opening to another opening, there should be no discharge from the conveyor otherwise the material will spill over the roof when the conveyor discharge end is travelling from one opening to another opening.

    The truck and the system picture shown by you does not have adequate clarity. Please see if you can attach a clearer picture of the arrangement.

    Regarding travel of shuttle conveyor, primarily it can be by travel drive mounted on wheel shaft. The travel drive will have the brake such that when the motor is not operating brake will apply automatically and keep it stationary.

    Other option to avoid this situation is to have something like plough discharge at the spacing of opening in the roof of truck. The material will get discharged at various ploughs simultaneously or one by one, which will flow into truck through the openings in the roof. This system will not need travelling shuttle conveyor, but it will have a stationary conveyor. Also, the chute from discharge plough should have swinging limited provision so that if the truck is marginally away from desired position, the chutes can be brought directly over the opening in the truck roof.

    The specific solution depends upon exact data and requirements.

    I trust the above information and suggested probable solutions may be of interest.

    Ishwar G Mulani.
    Author of Book : Engineering Science and Application Design for Belt Conveyors.
    Email :
    Tel.: 0091 (0)20 25882916.

  8. Dear Mr. J-S.Ratelle,

    Based on the sketch you supplied, the use of either a stationary conveyor with diverter plows (as suggested by Mr. Mulani) or a telescoping conveyor with discharge point proximity switches (or other I/O devices) would be appropriate.

    Is this still in the conception stage, or are we talking about a problem resolution situation?

    Dave Miller
    ADM Consulting
    10668 Newbury Ave., N.W.,
    Uniontown, Ohio 44685 USA
    Tel: 001 330 265 5881
    FAX: 001 330 494 1704

  9. #9
    J-S.Ratelle Guest

    We are still at the conception stage.

    -The problem with the stationary conveyor is the inlet that are differently located on each trucks.

    -The other problem is the dust. We need to collect them. So the conveyor will be enclose and he will have a dust collector connexion at is loading point. A loading spout with is own dust collecting system will probably be install at the discharge point.

    -Maybe a tripper can do the job but the enclose system and the dust collecting became more complicate.



  10. Thank you for the pdf file drawing set. It appears that this is a proposal to have one existing delivery conveyor (345-BEC-450) to feed two truck-loading systems. Apparently, shuttle conveyor 345-BEC-460 currently is used for loading closed (tanker) trailers on scale 345-TRS-466, using extendable drop chute 345-LSP-464. Also, it appears that you want the delivery conveyor to also feed an unnamed conveyor for loading open trailers on scale 345-TRS-744, using a new extendable drop chute.

    To do this, you need some means to feed both truck loading conveyors. This can be done by turning the delivery conveyor into a tripper system; by making the delivery conveyor a two-position extendable conveyor; by using diverter plows on the delivery conveyor; or by installing a separate delivery conveyor to feed the open trailer load station.

    As far as the new shuttle conveyor is concerned, you can copy the existing system used for the tanker trailers or install a tripper conveyor to load the truck evenly without moving the truck.

    I presume that the silos shown on the drawing (345-SIL-055 and future 345-SIL-065) do not have a bearing on your truck loading process.

    It also appears that this is a project requiring some engineering design work and that you are with a company making a proposal. It is outside of the scope of this forum to provide detailed engineering services. If you wish to have another engineering company provide alternatives, you should contract for the work. Any recommendations that you receive using this, or other, forum will only have directional value ? detailed recommendations have a price.

    Dave Miller
    ADM Consulting
    10668 Newbury Ave., N.W.,
    Uniontown, Ohio 44685 USA
    Tel: 001 330 265 5881
    FAX: 001 330 494 1704

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