DIY crane
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Informacje o modelu
- Źródło
- Printables
- Kategoria
- Engineering
- Licencja
- Creative Commons — Attribution — Noncommercial — Share Alike
This is a simple 3D model of a crane for a construction site that only utilizes a single TT motor for movement (preferably a 120:1 gear ratio for high torque).
It is around 140mm tall (14cm).
It routes a string/chord through a set of pulleys to lift objects.
For the axles of the pulleys, simply insert a toothpick through the holes (friction fit), and cut off the extra ends.
To insert the motor, there are no fasteners. Simply lift the Main body, and slide the motor casing over the motor. (For simplicity of assembly).
The motor pulley is friction fit onto the motor shaft.
This is the order to insert the string through the set of Pulleys:
Tie string to Motor pulley → under 1st pulley → left of topmost pulley → under the next pulley → over the last pulley
For clarification, look at the assembly image.
Additionally, to hold the arm up, attach a string connecting the two hooks at the top of the model.
Necessary materials:
Standard TT motor x 1: Preferably 120:1 gear ratio for high torque
Battery pack x 1: any cheap battery pack works
Optional: Switch x 1: You can also simply invert the flow of electricity by switching the + and - wires on the motor to lift or lower objects