Gearbox Explained: Connect Motor, Driveshafts & CV Joints

[zaraf]

Dear community,

for my hobby project I found a gearbox online which shall be connected to a electric motor I have. I expect that the driveshafts with CV joints to be connected directly to this gearbox. Can someone explain me the construction as in how should the motor be connected and how the driveshafts with CV joints which shall be delivering power to both wheels?

 

[AZFIREBALL]

you need to see this:

 

[zaraf]

Thanks for the video. What I am looking for is the setup in regards to the gearbox in the pic attached. Can you explain me the connections in it.

 

[AZFIREBALL]

What I see is what seems to be a composit image of two gear cases with a thick purple horizontal line between them. Do you have another view you can show us?

 

[Baluncore]

It looks to me like you have two devices in the picture, a gearbox and maybe a motor or another gearbox.

It appears that the devices shown are designed to mate, face to face, with the shafts being coupled by the spline on the shaft.
https://en.wikipedia.org/wiki/Spline_(mechanical

 

[zaraf]

Please ignore the blue line in the middle. Normally my motors spline should be inserted in it. And as a output I expect two splines with reduction where I could mount my cv drive shafts. This is a single reduction gearbox with a differential. Still I don't get the construction...

 

[Baluncore]

Still I don't get the construction...

What do you mean by "the construction"? You have not yet asked a question that can be answered.

We have insufficient information to identify what the items are that you show in the photograph.
Maybe you can identify the make and model number of the motor you will use, also the gearbox and the differential.

 

[zaraf]

Hello Baluncore

The motor is a simple AC motor (is not shown in diagram). I want to connect this motor to the gearbox and therefore the shop told me that this is the gearbox they could offer me. Sure the information is not complete, that's why I want to understand basics before I confront them with more questions. The only information is that the photo comprises of a gearbox with differential incorporated. What I don't understand like all of us that how to connect it with motor and driveshafts.

 

[zaraf]

The motor is AC motor similar to attached image. The application is in a small electric drive cart.

 

[jrmichler]

Connecting a motor to a reducer requires certain information. You need to find, determine, or calculate the following:

Motor RPM, running torque, peak torque, shaft size, keyway size, mounting provisions.
Load characteristics: Inertia, shock loads, etc.
Reducer shaft size, keyway, and mounting provisions.
Reducer specifications: Maximum RPM, continuous torque, peak torque, shaft loads (radial and axial).
Determine the shaft connection method: close coupled, coupling, shaft with universal joints.
Determine alignment tolerance (angular and offset) between motor and reducer.
Design a base that will maintain motor / reducer alignment within the specified tolerance under worst case loads. Start with a sketch showing the motor and reducer in position.

Connecting a motor and reducer is not a simple task to hand off to a mechanic. It requires engineering, and you have a master's degree. Now that you have a list of tasks, you should be able to get started. If you have a specific question about any task, just ask and we will help.

 

[AZFIREBALL]

How will you power the AC motor if this is a mobile cart ?

 

[jim hardy]

This is a single reduction gearbox with a differential. Still I don't get the construction...

Is your question "How does a differential work" ?

Try this.
Then take a look at your gearbox and it should make more sense.

You cannot seriously expect anybody to know from your picture what that thing is.

Old Engineering adage: "When all else fails, read the directions."
What does your instruction manual have to say ?