What is Auger Material Height Sensor Change Event in Asphalt Paver?

Posted on 2012-09-11
Last Modified: 2012-09-11
In a typical Asphalt Paver Machine, what is Auger Material Height Sensor Change Event?  My understanding is that Auger is used to move material from one end to the other.  
What is Auger Material Height Sensor Change Event?  How does this event occur?

Thank you!
Question by:naseeam
    LVL 15

    Assisted Solution

    The Gate Height Sensor compensates for changes from the original
    calibrated gate setting by adjusting the conveyor speed allowing for a more
    accurate granular material application. If the gate height is increased, the
    conveyor speed will decrease and decreasing gate height will increase
    conveyor speed.  

    Hope this helps.

    Author Comment

    Is the gate height same as auger material height?  Why does this height change during paving operations?
    LVL 10

    Accepted Solution

    Generally speaking, a paver consists of three primary components related to the distribution of asphalt:

    1. The conveyor: sends material dumped into the hopper to the augers (plural).
    2. The augers: two augers distribute asphalt from the conveyor out towards the end of the screed.
    3. The screed: levels the asphalt material deposited by the augers.

    The auger speed is adjusted based on a number of factors related to the asphalt flow rate.

    There are typically two sets of sensors related to the material height relative to the augers: inboard and outboard.  The inboard sensors monitor the amount of material being delivered from the conveyor(s) to the lead end of the augers.  As this level rises/falls, the sensors direct the conveyor to increase or decrease speed.  The outboard sensors monitor the material deposited at the end of the auguers, and direct the RPM of the augers to increase or decrease as needed (this is likely the sensor package you're inquiring about).

    Note: This description covers basic paver/paving concepts.  Details may vary by paver model.

    For a more technical discussion of these concepts, see the following patent discussion:


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