Effects of Changing Truck Filling Type on Schedule

In Haul Infinity Setup>Parameters, the Truck Filling Type can be adjusted. Truck filling in the context of loader operations involves methods to optimize how a loader fills a truck.

The filling types are as follows:

FullBuckets: 

• Each loader bucket is filled to its maximum capacity.
• This method ensures that every pass maximizes the loader's capacity, leading to fewer passes and potentially faster loading times.
• It's most effective when the material being loaded is uniform and easy to handle.

FullTrucks:

• The goal is to fill the truck to its maximum payload capacity.
• This method considers the truck's weight limit and volume capacity to ensure that it is fully loaded without exceeding legal or safety limits.
• It involves calculating the number of buckets required to achieve a full truck load in which all buckets are not necessarily filled fully

Theoretical:

• This involves calculating the theoretical number of loader cycles to achieve the best productivity.
• It takes into account factors like the loader's bucket capacity, the density of the material, and the truck's payload capacity.

Note: In APS calculations Theoretical No Minimum is used by the software.

Truck Filling Type can be set for each pair of Loader and Truck for each type of Materials separately or for all possible combinations. To change the Truck Filling Type it is possible to select multiple items from the Selections window by holding Ctrl+left click on each item. Combinations of Trucks, Loaders, and Materials are created, and changing the Truck Filling Type for all selected combinations can be done in the first column.

Example: 

For a given combination of Trucks, Loaders, and Materials different Truck Filling Types have been set to investigate the outcome for a given pair of source and destination. For each method the outcome is listed below:

• FullBuckets

• FullTrucks

• Theoretical

Summary of the outcomes for the example shown as follows:

Truck Filling Type	Number of Passes	Actual Truck Payload (t)	Number of Trucks	Loading Time (m)	Queue (m)
FullBuckets	4	252.6	7	1.5	1.41
FullTrucks	5	290.0	6	2	1.57
Theoretical	4.59	290.0	7	1.8	3.18

Key Takeaways:

1. Loading Time and Passes: The loading time is directly related to the number of passes. More passes lead to longer loading times.
2. Queue Time: Queue time is influenced by the number of trucks and loading time. More trucks and longer loading times increase queue time.
3. Method Efficiency:

• FullBuckets method is best for minimizing loading and queue times but results in lower payloads and more trips.
• FullTrucks method maximizes payload and reduces the number of trucks needed but increases loading and queue times.
• Theoretical method calculates the theoretical number of passes, payload, and loading time and in this case, leads to higher queue times (because of the higher number of trucks)

The choice depends on specific operational goals, whether prioritizing quick loading times, maximizing truck capacity, or balancing overall efficiency.

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