HI. Truck Models

Truck Library

📚 Truck files can be downloaded from the Alastri truck library.

There is an extensive library of modern trucks in the Trucks section on the website.

If you have a truck that is not in the list, please let us know (contact alastrisupport@micromine.com).

Note, that if you need fuel burn information for the specific truck type, please source it and provide it to us, and we will digitise it for you and add to the library, if applicable.

Truck Creator

⚒️ You can also digitise the required trucks yourself, using the Truck Creator functionality, provided in the Tools dropdown.

To digitise a truck of interest using the Truck Creator tool, you will need to find and download the manufacturer's data sheet/specifications for that truck model.

The specification must include the following data:

• Weight: empty (unladen) weight, maximum payload capacity (payload), gross weight.

• Truck weight distribution on axles, % front/rear, unladen/laden.

• Towing and Braking performance.

• Fuel consumption, if applicable.

For detailed instructions on the trucks digitising see HI. Truck Creator.

Axle Data

• Each row represents one axle on the truck.

• A “driven” axle is connected to the drive train.

• Each axle has a number of tyres.

• Each axle has a loaded and unloaded weight on it.

This is used for the TKPH tyre-loading calculations and full/empty travel times.

• The available curves are Rimpull, Retard, Fuel, Trolley Assist Rimpull, Battery Usage, Trolley Usage, Battery Regen and Regen Force.

• Turn curves on and off using flags in the Active column. If some curves are not applicable to your truck, select (none).

• Curves are digitized out of the manufacturer's handbooks. For better accuracy, calibrate with data from your fleet management system.

• Click in the graph area to manually show a point.

• Speed (km/h) and Force (kgf) values cannot be edited here, but can be copied into and pasted from Microsoft Excel using Copy to Clipboard and Paste from Excel buttons.

  • When editing and pasting curves data, the first Speed (km/h) value should always be 0.00.

Rimpull Curve

Available rimpull is a function of the gear ratios and the rolling radius of the machine. Haul Infinity uses the rimpull curves and the axle weights to derive an acceleration from the current vehicle speed.

Rimpull curves show the propulsion force in kilograms (kgF) against truck velocity (km/h).

• For mechanical trucks, the rimpull curve shows a characteristic series of humps as the transmission steps down through different gear ratios.

• Electric trucks typically show a smoother rimpull profile.

T = motor torque;
F = rimpull force;
r = rolling radius of driven tires;
G = gear reduction ratio between motors and driven wheels;
N = number of driving motors; 

T = (F * r) / (G * N);

Electric drive trucks have a smoother profile because there is no gear discontinuity. For electric drive trucks that do not have gears, rimpull can be approximated as the effective engine power divided by the velocity.

P = power;
F = force;
V = velocity;

F = P / V; 

Retard Curve

• Braking curves are not used to calculate stopping distances.

• The deceleration properties are set in Setup > Settings > Acceleration.

• In the presence of regenerative braking (for Battery Power trucks), this remains to be the normal non regenerative brakes.

• If multiple retard curves available for the imported truck file, compare and select the one applicable for the truck used on your site.

Fuel Curve

• Fuel curves match the fuel rate to the engine load.

Calibrate this graph with data from the fleet management system.

• This applies to the fuel powered trucks. Fuel curves are not needed for use with battery powered truck.

Trolley Assist Rimpull Curve

• Trolley assisted haulage involves feeding power to haul trucks from overhead lines. 

Segments have a trolley property. When toggled on, the truck switches to the trolley rimpull curve while traversing the segment.

Data will be available in:

Network > Cycle Time Analysis tab:

Network > Charts tab:

Battery Usage Curve

Haul Infinity uses this to calculate total battery energy used on each haul cycle if the trucks power source is Battery (Setup > Trucks > Limits > Power Source > Power Source Type).

Trolley Usage Curve

Electric trucks are often capable of delivering significantly more power at the wheels while attached to a trolley, which results in a higher power draw. The amount of power used is captured via the Trolley Usage curve, ensuring accurate reporting for capacity planning.

The Trolley Usage curve will only be relevant if you have powered trolley in your mine (on ramps, etc). If you are not modelling trolley usage it can be ignored.

Battery Regen Curve

Haul Infinity uses this to calculate total battery energy restored on each haul cycle if the trucks power source is Battery (Setup > Trucks > Limits > Power Source > Power Source Type).

Regen Force Curve (For Battery Power Trucks)

This is not used to calculate max safe downhill speeds like the retard curve, and is just used to calculate the amount of the braking force produced by regenerative braking.