×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Torque and power Distribution through a Two Stage Belt Drive

Torque and power Distribution through a Two Stage Belt Drive

Torque and power Distribution through a Two Stage Belt Drive

(OP)
Hello All
I am new to power transmission design and I am attempting to calculate belt tension in a two stage drive. I am having difficulty in determining the required tension in each stage.
I have a 7.25:1 ratio in each drive, although the pulley sizes are different. The first stage drives a jackshaft which is then linked to the flywheel with the second belt.
Disregarding any bearings or friction, there is no load on the first stage.
The question:
If I have a maximum torque input of 110N, how is that distributed / calculated through the system? Would I split the total on each belt (because the ratios are equal), or do I calculate the entire load on the second stage?
How much work is contributed by the first stage?
And, for future reference, if the ratios were NOT equal, how would this affect the calculations?

Thank you in advance for any assistance.

RE: Torque and power Distribution through a Two Stage Belt Drive

billinr,

   Each speed reduction increases the torque, and the belt tension.   

   Are you using timing belts, or some kind of friction belts?  If they are friction belts, you have to work out initial tensions.

   Your question is absolutely basic machine design.  If you do not know this, there is a whole pile of other stuff you do not know.   

               JHG

RE: Torque and power Distribution through a Two Stage Belt Drive

billinr,
What do you mean there is no load on the first stage?  It is driving the second stage.

Ted

RE: Torque and power Distribution through a Two Stage Belt Drive

"billinr,
What do you mean there is no load on the first stage?  It is driving the second stage. "

I think he means the first stage only drives the second stage i.e. there is no additional output from the first stage shaft. But, I am not too sure myself

Adriaan.
I am an Engineer/part time student (Mechatronics) from South Africa.
Advice from lecturer: "Be warned - when you go into industry your boss will give you a thousand things to do and he wants them done yesterday!" So far he is right...

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources