Contact US

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!

*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

Braking force

Braking force

Braking force

How to calculate the braking force on a vertical freight elevator?

RE: Braking force


Are you talking about the force encountered during the normal slowing of the elevator to a stop at each floor, or are you talking about what might happen if the emergency brake is applied?

Does the brake have a rated load? More to the point, does it have any means of modulation the way the brake pedal does in your car (you or something presses harder, and the brake applies more force), or is it simply "on" or "off"? What are the implications of that? I know what the answer is, but I'm trying to get you to think about how the device works.

What's the factor of safety between the load capacity of the elevator (including the carriage itself), and the capacity of this brake?

What's the manufacturer say?

RE: Braking force

Hello, I am evaluating an elevator tower. The tower mast shows displacements not contemplated and produces premature wear in the pieces, so they asked me to calculate the structure, I already have almost all the loads according to the corresponding standards and I still need to calculate the braking force product of the deceleration in each floor.

RE: Braking force

Depending on your elevator configuration in simple terms (while descending):

Max. Braking force (F)=effective mass X(max deceleration+ g)

Max deceleration will depend on braking distance and max velocity.

Engineers, think what we have done to the environment !https://www.linkedin.com/in/goutam-das-59743b30/

RE: Braking force

braking force depends on braking deceleration ... Newton's 2nd Law.

another day in paradise, or is paradise one day closer ?

RE: Braking force

Start with the amount of kinetic energy you need to convert: KE = 0.5mv^2.

Determine distance in which you want the elevator to stop. If you use time, use that to calculate distance travelled. Divide ΔKE by distance and you have braking force, which will be a very large number. (If you are using speed or time-to-stop, you can determine stopping distance.)

This is the horizontal case. add weight of elevator to braking force to balance KE added by elevator's downward travel.

RE: Braking force

thanks u all !

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! Already a Member? Login


Low-Volume Rapid Injection Molding With 3D Printed Molds
Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. Download Now
Design for Additive Manufacturing (DfAM)
Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a part’s function at the center of their design considerations. Download Now
Taking Control of Engineering Documents
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. Download Now

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close