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

 

[alphy]

Hello,

Thank you for sharing your research on calculating TKPH ratings for mining trucks using VIMS data. It seems like you have a good understanding of the basic formula for calculating TKPH ratings and have applied it correctly using the data provided.

However, there are a few things to consider when interpreting the results. First, it is important to note that the TKPH rating is a measure of the load-carrying capacity of the tire over a distance of one kilometer in one hour. This means that a higher TKPH rating does not necessarily indicate a better tire, but rather a tire that can handle a higher load at a faster speed.

Additionally, the data provided only represents one shift, which may not be enough to accurately determine the TKPH rating for a mining truck's tire. It is recommended to collect data from multiple shifts to get a more accurate average.

Lastly, it is important to consider other factors such as road conditions, tire inflation pressure, and tire wear, which can also affect the TKPH rating. It is best to consult with a tire expert or refer to the manufacturer's guidelines to ensure accurate and safe calculations.

Overall, it seems like you have correctly calculated the TKPH rating for the given data. However, it is important to consider other factors and collect more data for a more accurate assessment. I hope this helps and good luck with your research!