pinion fixing - tree

[CiccioDri]

Hello everyone, today I am working on a project of a reference tree to be completed in order to carry out an examination of the university, so notice that I am to my first project and I do not have the least experience in this matter. I have completed the sizing of the shaft and all the components, but the problem is now finding a way to fix the pinion axially (which is radially pushed by a stick). the pinion is placed symmetrically between two bearings, which are fixed thanks to a shouldering (shaft diameter on the 90mm pin, on the bearings 70mm). the bearings are distant from the "walls" of the pinion 43,25mm. There are no axial loads and I would like to avoid adding additional carvings to the piece. Can the use of two metal rings placed between the bearings and the wheel be feasible? thanks in advance for the attention

 

[MassiVonWeizen]

If you make carvings weaken the tree.
a subsuction could be to insert spacers (of the simple rings cut of the necessary width and only one processing on the hole for 0.5-1 m larger than the shaft) between the wheel and the bearing. then block the suit with a iron with safety rosetteyou have the advantage that besides the carving you also save the working of the shouldering and the resulting weakening. with the wreaths the package is well fixed mountable and removable quickly

 

[CiccioDri]

Thanks for the answer.
Unfortunately the shouldering is necessary for safety coefficients to be respected.
As for the wreath, in order to be able to use it, it is necessary to fill the tree and then create a series of carvings; or is it wrong?

 

[CiccioDri]

so much to give an idea of what I did, I place an image (made in speed, I hope you understand)..how does it seem? Can it be viable or there's some crap?

 

[roby88]

Hi, fathoms,
I apologize if I intervene even if I have little experience. .
By doing the mechanical maintainer of trees like your sketch, I'm dropping off and disassembled someone. .

and if instead of the self-locking wreath try to put a seger and mount the hot bearings or with much interference between the diameter of the shaft and inner diameter of the bearing?
You'd save all the thread carvings. .

 

[CiccioDri]

Hi, fathoms,
I apologize if I intervene even if I have little experience. .
By doing the mechanical maintainer of trees like your sketch, I'm dropping off and disassembled someone. .

and if instead of the self-locking wreath try to put a seger and mount the hot bearings or with much interference between the diameter of the shaft and inner diameter of the bearing?
You'd save all the thread carvings. .

not being there axial efforts I thought that a right-wing wreath and a space between pulley and left bearing can suffice, considering that they do not have to endure large loads and considering that the area where the wreath is placed is practically unloaded. Perhaps the method you recommend is more expensive in terms of time and money (but my personal considerations remain, since I return to specify that I have very little practical experience). The biggest doubt concerns the pinion, because I don't know if those two spacers can be a feasible hypothesis.

 

[roby88]

I am a more than feasible hypothesis. .
other advice I can give you, if the pinion is not subjected to huge loads and is not of a boring diameter, you can make two threaded holes in the pinion and then screw two grains that will go to tighten in a quarry made on the shaft.. .

how experienced we are there

 

[meccanicamg]

so much to give an idea of what I did, I place an image (made in speed, I hope you understand)..how does it seem? Can it be viable or there's some crap?

It could be all right.... Of course the representation leaves a bit to be desired but it does nothing.

all wrapped up and left wreath pulling everything to pack. there are many solutions, such as to mount a seeger for trees instead of the wreath. the pulley (of which you do not understand if it is for belts or chain and what type) you could block with a grain on the side hub of the pulley or on the throat. I could put a boot on the pulley. I could do that the shoulders on the tree are made only by tubes mounted on a smooth tree with a head on the right (as a nail).

everything as you did and use a long right spacer and close with a bolt with a central thread hole in the shaft

etc.
etc.
ecccccc

 

[CiccioDri]

I am a more than feasible hypothesis. .
other advice I can give you, if the pinion is not subjected to huge loads and is not of a boring diameter, you can make two threaded holes in the pinion and then screw two grains that will go to tighten in a quarry made on the shaft.. .

how experienced we are there

the delivery of the prof obliges me to use a stick to connect pinion and tree (among other things the loads are quite high).. thank you however for the advice and for the help

 

[CiccioDri]

mechanical excusemg, but the design was "pumped them" in speed to understand if those spacers and that wreath are just meaningless or is a feasible hypothesis, I didn't need anything else..the pulley is composed of 5 straps a v and I am forced to fix it with a calettatore because it is a delivery of the project. I didn't understand what you said. .

 

[meccanicamg]

the one that fixes with a jacker does not move in any direction. then to fix the rest there are many similar and different solutions