LifeTrac GrabCAD Challenge: Difference between revisions
No edit summary |
|||
| (34 intermediate revisions by 2 users not shown) | |||
| Line 1: | Line 1: | ||
'''See challenge at GrabCAD - http://grabcad.com/challenges/open-source-tractor-lifetrac-6-challenge''' | |||
'''Abstract on Design Goal:''' The following materials exhibit the current state of LifeTrac - Open Source Ecology's open source tractor. The goal is to take this design from a ''Mad Max ghetto rider'' to a quality, high performance tractor with articulated steering. The articulated steering is used to reduce wheel loads compared to skid-steering configuration - thereby simplifying the design of the wheel units drastically. We are currently designing the tractor for use with 1 or 2 Power Cubes - our 27 hp hydraulic power units. The goal of this challenge is to improve on this design based on past builds. See the results of [[LifeTrac 5]] - and the numerous comments there on design issues in the videos. All details of this 'lifesize erector set' design are to be evolved until we have a satisfactory tractor. By helping this project, you are helping to develop a 'peoples' tractor' that can be built from stock parts - and that can be maintained easily by the user for a lifetime of service. | |||
See intro video on the LifeTrac history - | See intro video on the LifeTrac history - | ||
<html><iframe src="https://player.vimeo.com/video/49216792" width="500" height="281" frameborder="0" webkitAllowFullScreen mozallowfullscreen allowFullScreen></iframe> <p><a href="http://vimeo.com/49216792">The LifeTrac Story 2012.</a> from <a href="http://vimeo.com/opensourceecology">Open Source Ecology</a> on <a href="https://vimeo.com">Vimeo</a>.</p> | <html><iframe src="https://player.vimeo.com/video/49216792" width="500" height="281" frameborder="0" webkitAllowFullScreen mozallowfullscreen allowFullScreen></iframe> <p><a href="http://vimeo.com/49216792">The LifeTrac Story 2012.</a> from <a href="http://vimeo.com/opensourceecology">Open Source Ecology</a> on <a href="https://vimeo.com">Vimeo</a>.</p> | ||
</html> | </html> | ||
=Last Model - LifeTrac 5= | |||
This tractor has been deployed for testing at the [[Our School at Blair Grocery]] urban gardening project in New Orleans. | |||
[[Image:Liftrac5.jpg|500px]] | |||
See [[LifeTrac 5]] | |||
=Existing Model of LifeTrac 6 - in Development= | |||
This one has one power cube. Loader cylinders need to be added. | |||
[[Image:LifeTrac6.jpg|400px]] | |||
'''Download Sketchup file (18MB): [[File:LifeTrac6.skp]]''' | |||
If you don't already have '''Google Sketchup''' downloaded, get it [http://www.sketchup.com/ '''Here''']. | |||
=Universal Constructor Set Pieces= | |||
[[Image:Warehouse_snip_v3.PNG|400px]] | |||
For the final product to be modular and easy to assemble, the parts you use in the frame must come from the [http://opensourceecology.org/wiki/Warehouse Warehouse] | |||
[[File:warehouse.skp]] | |||
=General Requirements= | =General Requirements= | ||
| Line 13: | Line 44: | ||
[https://docs.google.com/a/opensourceecology.org/drawings/d/10bgcLamwvOVz_61bTilgq2rKr86Ni-CCbG5oikMICTw/edit Click edit to access links in the drawing.] | [https://docs.google.com/a/opensourceecology.org/drawings/d/10bgcLamwvOVz_61bTilgq2rKr86Ni-CCbG5oikMICTw/edit Click edit to access links in the drawing.] | ||
The hydraulic connections to and from the cab are all organized on a single panel: see [[Hydraulic Panel]] concept. | |||
[http://opensourceecology.org/wiki/LifeTrac_6_Modules#Cab_Design_Requirements Link to Modules Page] | [http://opensourceecology.org/wiki/LifeTrac_6_Modules#Cab_Design_Requirements Link to Modules Page] | ||
| Line 18: | Line 51: | ||
=Loader Arm Requirements= | =Loader Arm Requirements= | ||
<html><img src="https://docs.google.com/drawings/d/1xDxpeZIsfRx-634vUNjc9_OPSysIHzOkOe09usFEXgY/pub?w=1000&h= | <html><img src="https://docs.google.com/drawings/d/1xDxpeZIsfRx-634vUNjc9_OPSysIHzOkOe09usFEXgY/pub?w=1000&h=1000"></html> | ||
[https://docs.google.com/a/opensourceecology.org/drawings/d/1xDxpeZIsfRx-634vUNjc9_OPSysIHzOkOe09usFEXgY/edit Edit This Drawing] | [https://docs.google.com/a/opensourceecology.org/drawings/d/1xDxpeZIsfRx-634vUNjc9_OPSysIHzOkOe09usFEXgY/edit Edit This Drawing] | ||
=Quick Attach= | =Power Cube Module= | ||
<html><img src="https://docs.google.com/drawings/d/1TCfqCAdD-HY_d_eLz_lOVK38qaG-osYK9UQRf1aXmK8/pub?w=800&h=800"></html> | |||
[https://docs.google.com/drawings/d/1TCfqCAdD-HY_d_eLz_lOVK38qaG-osYK9UQRf1aXmK8/edit Edit This Drawing ^^] | |||
[[File:LifeTrac6_PowerCube.skp]] | |||
=Quick Attach Module= | |||
We are using the [[Bobcat Standard Quick Attach]] module: | |||
[[File:QuickAttach.jpg Quick Attach|400px]] | |||
[[File:Quick Attach.skp]] | |||
[http://opensourceecology.org/wiki/Bobcat_Standard_Quick_Attach_for_LifeTrac Bobcat_Standard_Quick_Attach_for_LifeTrac] | |||
=Modular Wheel Units= | =Modular Wheel Units= | ||
These wheels mount on the frame tubing as quick-connect modules for the tractor: | |||
[[File:Wheel Mount.jpg Wheel Mount|400px]] | |||
[[File:Wheel Mount.skp]] | [[File:Wheel Mount.skp]] | ||
[[File: | This is a detail of the wheel module frame: | ||
[[File:Wheelmount - edited 6-9-13.jpg|300px]] | |||
[http://opensourceecology.org/wiki/Quick_Attach_Wheel_Module Quick_Attach_Wheel_Module] | |||
[http://opensourceecology.org/wiki/Modular_Wheel_Units Modular Wheel Units] | |||
=Rear Wheel Base= | |||
This is the current design of the entire rear wheel base. | |||
<html><img src="https://docs.google.com/drawings/d/1N3IRSpQp3j6BAzcifmQvn8VDQC8dyFpVOwbNhDlSD8I/pub?w=800&h=400"></html> | |||
[https://docs.google.com/drawings/d/1N3IRSpQp3j6BAzcifmQvn8VDQC8dyFpVOwbNhDlSD8I/edit Edit This Drawing] | |||
[[File:Rear_Wheelbase.skp]] | |||
=Steering Pivot= | |||
This is a detail of the suggested pivot that joins the front and rear sections of the tractor. | |||
<html><img src="https://docs.google.com/drawings/d/1RMj9adA4jKuY80O6YIN5AZjS6pnx1ZCNVRQ2LFUVzi8/pub?w=960&h=720"></html> | |||
[https://docs.google.com/drawings/d/1RMj9adA4jKuY80O6YIN5AZjS6pnx1ZCNVRQ2LFUVzi8/edit Edit This Drawing ^^] | |||
[[File:SteeringPivot.skp]] | |||
=General Requirements= | =General Requirements= | ||
| Line 40: | Line 118: | ||
=Links= | =Links= | ||
*[[TED Talk]] | *[[TED Talk]] | ||
*[[LifeTrac Documentation at Dozuki]] | *OSE website - http://opensourceecology.org | ||
*OSE documentation site - [[LifeTrac Documentation at Dozuki]] | |||
*Prior work on current model of LifeTrac - see [[LifeTrac Modules]] | *Prior work on current model of LifeTrac - see [[LifeTrac Modules]] | ||
*Last version of this tractor - [[LifeTrac 5]] | |||
=Other Links= | =Other Links= | ||
*Application form for this challenge - [[File:lt6GC.odt]] | |||
*[[GrabCAD Challenge Template]] | *[[GrabCAD Challenge Template]] | ||
*See also [[LifeTrac 6 Product Requirements]]. | *See also [[LifeTrac 6 Product Requirements]]. | ||
Latest revision as of 15:52, 28 August 2013
See challenge at GrabCAD - http://grabcad.com/challenges/open-source-tractor-lifetrac-6-challenge
Abstract on Design Goal: The following materials exhibit the current state of LifeTrac - Open Source Ecology's open source tractor. The goal is to take this design from a Mad Max ghetto rider to a quality, high performance tractor with articulated steering. The articulated steering is used to reduce wheel loads compared to skid-steering configuration - thereby simplifying the design of the wheel units drastically. We are currently designing the tractor for use with 1 or 2 Power Cubes - our 27 hp hydraulic power units. The goal of this challenge is to improve on this design based on past builds. See the results of LifeTrac 5 - and the numerous comments there on design issues in the videos. All details of this 'lifesize erector set' design are to be evolved until we have a satisfactory tractor. By helping this project, you are helping to develop a 'peoples' tractor' that can be built from stock parts - and that can be maintained easily by the user for a lifetime of service.
See intro video on the LifeTrac history -
The LifeTrac Story 2012. from Open Source Ecology on Vimeo.
Last Model - LifeTrac 5
This tractor has been deployed for testing at the Our School at Blair Grocery urban gardening project in New Orleans.
See LifeTrac 5
Existing Model of LifeTrac 6 - in Development
This one has one power cube. Loader cylinders need to be added.
Download Sketchup file (18MB): File:LifeTrac6.skp
If you don't already have Google Sketchup downloaded, get it Here.
Universal Constructor Set Pieces
For the final product to be modular and easy to assemble, the parts you use in the frame must come from the Warehouse
General Requirements
Cab Module Requirements
Click edit to access links in the drawing.
The hydraulic connections to and from the cab are all organized on a single panel: see Hydraulic Panel concept.
Loader Arm Requirements
Power Cube Module
Quick Attach Module
We are using the Bobcat Standard Quick Attach module:
Bobcat_Standard_Quick_Attach_for_LifeTrac
Modular Wheel Units
These wheels mount on the frame tubing as quick-connect modules for the tractor:
This is a detail of the wheel module frame:
Rear Wheel Base
This is the current design of the entire rear wheel base.
Steering Pivot
This is a detail of the suggested pivot that joins the front and rear sections of the tractor.
General Requirements
LifeTrac 6 Product Requirements
First Cut
Links
- TED Talk
- OSE website - http://opensourceecology.org
- OSE documentation site - LifeTrac Documentation at Dozuki
- Prior work on current model of LifeTrac - see LifeTrac Modules
- Last version of this tractor - LifeTrac 5
Other Links
- Application form for this challenge - File:Lt6GC.odt
- GrabCAD Challenge Template
- See also LifeTrac 6 Product Requirements.