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Author Any farmers among us?
Bart
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Registered: 19th Aug 02
Location: Midsomer Norton, Bristol Avon
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3rd Dec 05 at 17:16   View User's Profile U2U Member Reply With Quote
Ive been asked to design a mechanical device that will fit onto the front or rear of a tractor offtake shafts.
I was wondering if anyone would be able to give me any useful info on the conenctions, or know somewhere where i could find such information?

ive googled it but not found much
CorsAsh
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Registered: 19th Apr 02
Location: Munich
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3rd Dec 05 at 17:44   View User's Profile U2U Member Reply With Quote
PTO is usually just like a driveshaft, so design something to take rotational input through a CV joint and make it do...something...
Paul
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Registered: 16th Apr 02
Location: Oop north.
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3rd Dec 05 at 17:45   View User's Profile U2U Member Reply With Quote
turn it into a whisk
Paul
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Registered: 16th Apr 02
Location: Oop north.
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3rd Dec 05 at 17:47   View User's Profile U2U Member Reply With Quote
Its usually a splined shaft with different numbers of splines on it depending on hte manufacturer etc. the thing i'd suggest is get your arse down to a local farm machinery supplier and ask them.
Welsh Dan
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Registered: 23rd Mar 00
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3rd Dec 05 at 20:27   View User's Profile U2U Member Reply With Quote
Ask Nismole or Cheesy...........
Colin.S
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Registered: 19th Oct 02
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3rd Dec 05 at 20:49   View User's Profile U2U Member Reply With Quote
or brad.

he has some big arse machines on his farm

http://www.corsasport.co.uk/board/garage.php?action=usergarage&owner=bradfincham&carid=1430&page=all

[Edited on 03-12-2005 by Colin.S]
Mertin
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Registered: 12th Oct 05
Location: Scotland
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4th Dec 05 at 03:11   View User's Profile U2U Member Reply With Quote
that john deer is a baby! : !: !: !: !

im a farmer, well my dad is but cant really help you, all i know is its a drive shaft

is the babe pics in the above garage foxy? as i recognise the lacy pants pic

and that is one mean ass plough and the CAT machine

[Edited on 04-12-2005 by Mertin]
Ian
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Registered: 28th Aug 99
Location: Liverpool
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4th Dec 05 at 06:08   View Garage View User's Profile U2U Member Reply With Quote
Power take off - PTO.

Either rotates at 540 or 1000 rpm.

540 rpm design has 6 splines and is 1 3/8" in diameter.

1000 rpm design has either 20 splines and a diameter of 1 3/4" or 21 and a diameter of 1 3/8"

There are also 3 types of coupling.

Proper full ISO specs are here - http://www.iso.org/iso/en/CatalogueListPage.CatalogueList?COMMID=930
Bart
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Registered: 19th Aug 02
Location: Midsomer Norton, Bristol Avon
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4th Dec 05 at 10:14   View User's Profile U2U Member Reply With Quote
Ian! your a star.

Thanks very much.
Ive been looking at the wrong website. Ive been looking on the HSE website for that sort of stuff. Thanks
Tom
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Registered: 3rd Apr 02
Location: Wirral, Merseyside
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4th Dec 05 at 11:48   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by CorsAsh
ooohhhh arrrrrrrr


yes
Bart
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Registered: 19th Aug 02
Location: Midsomer Norton, Bristol Avon
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4th Dec 05 at 11:51   View User's Profile U2U Member Reply With Quote
For my assignment, i have to design a mechanical nut collector/picker which will fit onto either (or both) the front/back of a standard tractor.

For the collection part i am thinking something along these lines:


and for the picking part im thinking along the ideas of vibrating the trunk of the tree with something like this:



or



Now ive just got the hard part of trying to work out how its going to be powered if possible. Powering all that from a single power take off isnt going to be easy



if anyone has any ideas/suggestions they'd be very welcome!


Adam
Ian
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Registered: 28th Aug 99
Location: Liverpool
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4th Dec 05 at 15:24   View Garage View User's Profile U2U Member Reply With Quote
You would have hydraulic lines available for the jaws and to fold the wings in and out.

The piston arrangement in the middle pic will offer more force to the tree.
Bart
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Registered: 19th Aug 02
Location: Midsomer Norton, Bristol Avon
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4th Dec 05 at 20:40   View User's Profile U2U Member Reply With Quote
ooh, i forgot about hydraulic source being there.. nice one
Paul
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Registered: 16th Apr 02
Location: Oop north.
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4th Dec 05 at 21:07   View User's Profile U2U Member Reply With Quote
To vibrate it a cam would do that ideally spinning at high speeds.

[Edited on 04-12-2005 by Paul]
bradfincham
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Registered: 20th Sep 02
Location: East Of England Drives: Clio 172
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5th Dec 05 at 14:31   View User's Profile U2U Member Reply With Quote
power take off as ian says is either 540 rpm or 1000

use that for rotational and mechanical work

you have spool valves, which you can control the flow to,
range from 4 - 12 dependant on tractor.

there used to lift trailers up, move hedgecutter arms etc

And if you have a hydraulic pump on the machine you can then use them to turn into rotational force etc!

and mertin thats my missus not foxy

Hope that helps Bart!!

 
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