Help Needed: Design of 3 Gear Assemblies for Switchgear

[delima]

Hi ,
Please I need some help here.
I’m working on a project .I have to design 3 gear assemblies which run a switchgear inside an enclosure. Here I attach 3 drawings and a picture for the gears. I have to do my calculations and select the specification (diameter, lengthy, cross section, material…etc.) for the 3gears, linkages, shafts, axles, chain, ball joints and frames. Dimensions shown on drawings have to stay the same because they are related to the enclosure dimensions.
I was provided with the following information:

The linkage is tested at 5000 Lbs (1100N).
The mechanical force to apply to the manual operator depends on the type of this operator:
. For Torsion bar manual operator, the force is 250 N min and 450 N max.
. For worm gear manual operator, the force is 60N min and 120 N max.
The torque is calculated consequently.

Actually I don’t know where to start from, and what other information I need to collect for my job.
I would really appreciate any help.

Thanks
Delima

 

[delima]

Hi,
Well it seems that this too much information.I will ask simple questions and go step by step.
How do I calculate the rpm of gear G1?provided that the two gears G1&G2 are rotating at the same speed and connected together with a 28.5" long chain,and the max. force is 450N,and the gear is supposed to rotate 1/4turn only?
Thanks,
Delima

 

[Mene]

Hello Delima,

Thank you for reaching out for help with your project. I understand the importance of designing gear assemblies that meet specific specifications and can perform their intended function effectively. To start, I would recommend gathering more information about the switchgear and its intended use. This could include any load or torque requirements, operating conditions, and any other relevant factors that may affect the design of the gear assemblies.

Next, I would suggest using a computer-aided design (CAD) software to create 3D models of the gear assemblies. This will allow you to visualize and test different designs and configurations before finalizing your specifications. You can also use simulation software to analyze the performance of the gear assemblies under different operating conditions.

In terms of selecting the specifications for the gears, linkages, shafts, axles, chain, ball joints, and frames, it is important to consider the material properties, such as strength, hardness, and wear resistance, to ensure the longevity and durability of the components. You may also need to consider factors such as cost and availability of materials.

It is also important to perform calculations to determine the appropriate size and dimensions for each component based on the load and torque requirements. You can use equations such as the Torsion Equation and the Gear Ratio Equation to help with these calculations.

Overall, designing gear assemblies for switchgear requires a combination of technical knowledge, careful analysis, and attention to detail. I hope this advice helps guide you in the right direction. Good luck with your project!