Microtractor/Research Development

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Microtractor
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Status

Prototype 1

See Blog Post -

MicroTrac1.jpg
Microtrac4.jpg
MicroTrac2.jpg
MicroTrac3.jpg

Design

http://blog.opensourceecology.org/2009/07/zero-turn-microtrac/

CAD

Blender File - File:Microtrac Design1.blend

Prototype II Proposals

Prototype II - Will Cleaver

MicroTrac Prototype uses a Power Cube just like MicroTrac Prototype I, but it uses more of the LifeTrac design pattern language: a cubic, bolt-together, 4x4x1/4" tubing construction, with wheel shaft mounting plates.

See the video:

MicrotracII.jpg File:MicrotracIIv01.blend

Design Repository: http://openpario.mime.oregonstate.edu/documents/722

Comments and Questions on v0.1

  • How do we interpret dimensions on v0.1 in the Blender file? Please comment. What are the basic size dimensions for the wheel base?
  • Reduce loader arm length and make it more vertical in v0.11. It's sticking too far out.
  • I think the bearings have to be on opposite sides, as 4" separation is too small, leading to large stress on motor shaft
  • Please render MicroTrac and LifeTrac next to each other for size comparison:
  • What is the max height reach of bommon of loader quick-attach plate?

For practical reasons, it would be useful to design MicroTrac with sufficient reach to load the CEB press. The present design is more like MiniTrac, not MicroTrac.

Can you also design a MicroTrac: but a platform under the power Cube, put on 4 wheels with tracks, but 2 drive motors, and a loader attached to the Power Cube? It would have low reach, only like 2-3 feet - but would be a true MicroTrac.

Prototype Proposal - Andrew Spina

Prototype Proposal - Graham Robertson

[Download second drawing, and picture of first iteration] (still in the works, improved upon first design). This is a crude, unfinished representation, long way to go before its a true fab drawing.

I would like to hear ideas, suggestions or help drawing up:

a control panel behind the power cube, that can be easily removed to allow for removal of the power cube.

I like the idea of tank treads, as we could really downsize the width of the frame. Not sure about the technical part of designing this.

Changes from first proposal:

Shortened quick connect wheel module to one "cell." Need help figuring out how the shaft and bearings will fit into this. Tractor width (outer rim to rim) decreased from 62" to 46"

Tweaked frame proportions and design

Straight loader arms (Thanks Dorkmo for uploading the bent arms, QA plate, and quick connect wheels on 3d warehouse)

Next iteration:

Tank treads?

Add hinged or removable control panel behind power cube plus hydraulic mounts. Short shafts and bearings for QC wheels

Industry Standards

  • Industry Standards Analysis Spreadsheet

https://docs.google.com/spreadsheet/ccc?key=0Av4ZjQn4DHJHdFZzQTFCb2RCYUhYWDlnb1NEUjBOcUE#gid=29

See Also


The Global Village Construction Set
Habitat CEB Press Cement Mixer Sawmill Bulldozer Backhoe
Agriculture Tractor Seeder Hay Rake Well-Drilling Rig
Microtractor Soil Pulverizer Spader Hay Cutter Trencher
Bakery Oven Dairy Milker Microcombine Baler
Industry Multimachine Ironworker Laser Cutter Welder Plasma Cutter
CNC Torch Table Metal Roller Rod and Wire Mill Press Forge Universal Rotor
3D Printer 3D Scanner CNC Circuit Mill Industrial Robot Chipper Hammermill
Drill Press Induction Furnace
Energy Power Cube Gasifier Burner Solar Concentrator Electric Motor Generator Hydraulic Motor
Steam Engine Heat Exchanger Wind Turbine Pelletizer Universal Power Supply
Nickel-Iron Battery
Materials Aluminum Extractor Bioplastic Extruder
Transportation Car Truck

Imprimante 3D Scanner 3D Extracteur d'Aluminum Pelleteuse Four à Pain Presse à balles de paille Extrudeuse à bioplastiques Bulldozer Voiture Presse BTC Betonnière Broyeur à marteaux Imprimante de circuits électroniques Table de découpe numérique Trayeuse Perçeuse à colonne Moteur électrique Gazogène Faucheuse Râteau à foin Moteur hydraulique Fourneau à induction Bras robotisé Poinçonneuse Découpeur Laser Laminoir à plaques Microcombine Microtracteur Multimachine Batterie Ni-Fe Machine à granulés Torche plasma Power Cube Presse hydraulique Laminoir à barres et fils de fer Pulvérisateur de terre Scierie Semoir Concentrateur solaire Roto-bêche Moteur à vapeur Echangeur de chaleur Tracteur Fraiseuse de tranchée Camion Alimentation électrique universelle Rotor universel Poste de soudure à l'arc Plateforme de forage de puits Eolienne

Key Design Planning Prototype Almost done Full Release