Calculate TKPH Ratings for Mining Trucks Using VIMS Data: A Beginner's Guide

[knightza]

I've just started a research on the tyre of mining trucks and am a bit unsure on how to calculate the TKPH ratings.

Say for this set of data from VIMS,

GMW = 390 tons
Payload = 245.1 tons
Total cycle time = 15:29 minutes
Total cycle distance = 6.8 km

And that is one shift.

So, mean tyre load = 390 + 245.1/2 = 512.55 tons
AWSS = (6.8*1)/(15.5/60)

TKPH rating = mean tyre load * AWSS > 13000 ton-kilometer per hour which is REALLY big.

Can anyone see what I did wrong?

 

[omarspark]

Mean Tire Load=(tire load empty+tire load loaded)/2
So GMW=390 that's vehicle loaded
Payload=245.1 that's the load, SO Empty vehicle=390-245=145
Then you have to obtain your vehicle information about weight disturibtion and number of wheels to get each tire load.
Like for example--2 front tires and 4 rear tires with distribution...
Empty Loaded
Front% 55% 35%
Rear% 45% 65%
front 39.87 53.63 ---mean tire load ...46.75
rear 16.31 63.37 ---mean tire load ...39.84


AWSS=6.8/(15.5/60)=26.3226
TKPH=MTL*AWSS
front =46.75*26.3226 = 1230
rear =39.84*26.3226 = 1048
THATS TOO some high as distance=6.8 km and low time 15.5 for the whole cycle,and sure big payload 245.
GOOD LUCK

 

[CBC1969]

Mean Tire Load=(tire load empty+tire load loaded)/2
So GMW=390 that's vehicle loaded

THE BELOW PASTED TREAD, NEED CLARFICATION.
ON LOADED CONDITION HOW IS THE LOAD DISCTRBUTION CALCULATED
EG ( 390*65%)/4= 63.37 BUT ON THE FRONT
(390*35%)/2=68.25,( IT HAS BEEN MENTIONED AS 53.63) HOW IT SI ARRIVED
PLEASE CLARFY AS I HAVE TO WORK ON CERTAIN TKPH CALUALTION.

CBC




Payload=245.1 that's the load, SO Empty vehicle=390-245=145
Then you have to obtain your vehicle information about weight disturibtion and number of wheels to get each tire load.
Like for example--2 front tires and 4 rear tires with distribution...
Empty Loaded
Front% 55% 35%
Rear% 45% 65%
front 39.87 53.63 ---mean tire load ...46.75
rear 16.31 63.37 ---mean tire load ...39.84


AWSS=6.8/(15.5/60)=26.3226
TKPH=MTL*AWSS
front =46.75*26.3226 = 1230

 

[omarspark]

it is mistake, use the weight distribution% mentioned