Re: Counterweight Mass
Originally Posted by ammar79
Dear Sir:
Kindly help me to find mass of the counterweight of the transport belt after we change the trough angle of carrier idler supports from 45 degree to 35 degree the characters and type of this belt are:
1.Belt width 1600 mm.
2.Distance between centers 118.99 m
3.Warping 30.8 m.
4.Inclination 15º
5.Capacity 2500 ton/hr.
6.Speed 2.3m/s.
7.Material caliza/arcil.
8.Size 0-115 mm.
9. Power 2160 KW (50HZ).
10.Temperature 25.
11.Tension 380 V 50 HZ.
And I ask if you can give me the formula or method to calculate the mass of counterweight of rubber belts.
Thanks,
Ammar Thamer
Mechanical Engineer
Bazian Cement Company
Mob. NO. 00967702239160
BCC
Kindly help me to find mass of the counterweight of the transport belt after we change the trough angle of carrier idler supports from 45 degree to 35 degree the characters and type of this belt are:
1.Belt width 1600 mm.
2.Distance between centers 118.99 m
3.Warping 30.8 m.
4.Inclination 15º
5.Capacity 2500 ton/hr.
6.Speed 2.3m/s.
7.Material caliza/arcil.
8.Size 0-115 mm.
9. Power 2160 KW (50HZ).
10.Temperature 25.
11.Tension 380 V 50 HZ.
And I ask if you can give me the formula or method to calculate the mass of counterweight of rubber belts.
Thanks,
Ammar Thamer
Mechanical Engineer
Bazian Cement Company
Mob. NO. 00967702239160
BCC
I always found that there must be enough dead weight in the weight box to tension the belt for half of the distance of the counterweight rail travel length while under load. ■
Re: Counterweight Mass
From the details I would say something about 13.5 tons
However, the counterweight is depending on multiple issues:
- how much belt sag do you allow? I assumed 1.5% on 1.2m roller spacing carrying side, 3m spacing return side.
- what is the drive lagging and friction factor? Rubber, wet conditions?
- what is the degree of wrap around the drive? 200deg?
- What is the coupling system? I assumed hydraulic.
Basically you need enough weight to:
1. eliminate slip at the drive
2. reduce belt sag to about 1-2% to reduce 'drag' and keep power consumption acceptable ■
Counterweight Mass
Dear Sir:
Kindly help me to find mass of the counterweight of the transport belt after we change the trough angle of carrier idler supports from 45 degree to 35 degree the characters and type of this belt are:
1.Belt width 1600 mm.
2.Distance between centers 118.99 m
3.Warping 30.8 m.
4.Inclination 15º
5.Capacity 2500 ton/hr.
6.Speed 2.3m/s.
7.Material caliza/arcil.
8.Size 0-115 mm.
9. Power 2160 KW (50HZ).
10.Temperature 25.
11.Tension 380 V 50 HZ.
And I ask if you can give me the formula or method to calculate the mass of counterweight of rubber belts.
Thanks,
Ammar Thamer
Mechanical Engineer
Bazian Cement Company
Mob. NO. 00967702239160
BCC ■