Need construction advice for rail bogie

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Discussion Overview

The discussion revolves around the design of a rail bogie intended for straight rail use, focusing on construction methods for connecting the body to the axles. Participants explore various mechanical design considerations, including load capacity, bearing types, and potential suspension systems.

Discussion Character

  • Technical explanation
  • Homework-related
  • Debate/contested

Main Points Raised

  • One participant suggests using bearings with pillow block casings, while noting that a suspension system may be necessary depending on the design requirements.
  • Another participant questions the mechanical design experience of the original poster and asks about safety factors, braking systems, and incline considerations for the rail vehicle.
  • The original poster indicates that they are studying mechanical engineering and seeks a simple solution for a homework task, mentioning that accuracy in calculations is not a primary concern.
  • Further inquiries are made regarding the suitability of different bearing types, the loads components will encounter, the necessity of suspension, and methods for maintaining wheel alignment and body centering.

Areas of Agreement / Disagreement

Participants express varying opinions on the necessity of suspension and the types of bearings to use, indicating that multiple competing views remain without a clear consensus on the best approach for the bogie design.

Contextual Notes

Participants have not resolved specific technical details such as load calculations, safety factors, and design requirements for braking and alignment, which may influence the final design choices.

Who May Find This Useful

Individuals interested in mechanical engineering, particularly those focused on rail vehicle design or related homework tasks, may find this discussion relevant.

Tadas
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< Mentor Note -- thread moved to HH from the technical engineering forums, so no HH Template is shown >[/color]

Capture.png

I have to design similar bogie to one shown above. It's is used on straight rail.

I am not sure what kind of construction I should use to connect body to axles.
More simple solution - better.

Additional information:
This bogie (including it self) has to be able to carry 4 tons.
Chain gear runs one axle (sprocket).
Motor is 0,75kW.
 
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Bearings with pillow block casings...

Unless you need suspension. Then use a suspension system of your choosing.
 
Tadas said:
Capture.png

I have to design similar bogie to one shown above. It's is used on straight rail.

I am not sure what kind of construction I should use to connect body to axles.
More simple solution - better.

Additional information:
This bogie (including it self) has to be able to carry 4 tons.
Chain gear runs one axle (sprocket).
Motor is 0,75kW.

Welcome to the PF.

What is your mechanical design experience? What calculations will you do to determine your safety factors? What are you planning to use for brakes? What is the maximum incline that this rail vehicle will see?
 
AVX
Travis_King said:
Bearings with pillow block casings...

Unless you need suspension. Then use a suspension system of your choosing.

Thank you. It's exactly what I was looking for.

berkeman said:
Welcome to the PF.

What is your mechanical design experience? What calculations will you do to determine your safety factors? What are you planning to use for brakes? What is the maximum incline that this rail vehicle will see?

I study mechanical engineering, mostly directed to metal parts manufacturing. So I got this task for homework and was looking for simple solution.
About calculation it is not required to be very accurate in comparison to the drawing I am making. Just basic model how it might look. I think what Travis_King suggested is suitable solution for me.
Thank you for reply.
 
What I gave you was very basic. What type of bearing is suitable? What sorts of loads will the components see? Is suspension necessary? How will you keep the wheels aligned and the body centered?
 

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