Gears and transmission
Footstep Power Generator Assembly
- Bounding box
- 600.0 × 486.0 × 180.0 mm
- Engine
- Precision B-rep
- Parameters
- 45
- Published
- August 9, 2026
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The prompt
Design a compact mechanical footstep power generator for a B.Tech mechanical engineering project. Overall size: 600 × 400 × 180 mm. Top footstep plate: 450 × 300 × 8 mm, with 30 mm vertical downward movement. Use 4 guide rods (Ø16 mm) and 4 compression springs for returning the plate. Use a vertical rack connected to the footstep plate and a module-2, 20-tooth pinion on a Ø20 mm shaft. Use a simple gear speed-increasing stage to drive a small 12 V DC generator. Include: - steel base frame - footstep plate - guide rods and bushes - compression springs - rack and pinion - shaft - 2 bearings - speed-increasing gears - generator mounting bracket Keep the design compact, simple, manufacturable and suitable for a student project. Create separate components and a complete assembly. Export as STEP.
Parameters
| Name | Value | Range |
|---|---|---|
| Base length | 600 mm | 500 – 800 |
| Base width | 400 mm | 300 – 600 |
| Base height | 140 mm | 100 – 200 |
| Base plate thickness | 8 mm | 4 – 12 |
| Footstep plate length | 450 mm | 350 – 550 |
| Footstep plate width | 300 mm | 200 – 400 |
| Footstep plate thickness | 8 mm | 4 – 12 |
| Footstep plate top height | 172 mm | 120 – 200 |
| Guide rod diameter | 16 mm | 10 – 25 |
| Guide rod top height | 180 mm | 140 – 220 |
| Rod offset from plate edge (X) | 30 mm | 10 – 80 |
| Rod offset from plate edge (Y) | 30 mm | 10 – 80 |
| Linear bush outer diameter | 25 mm | 20 – 35 |
| Linear bush height | 30 mm | 20 – 40 |
| Bush housing boss height | 30 mm | 20 – 40 |
| Spring outer diameter | 22 mm | 18 – 30 |
| Spring inner diameter | 16 mm | 12 – 20 |
| Spring seat height | 100 mm | 60 – 140 |
| Rack length | 120 mm | 80 – 160 |
| Rack width (face width) | 20 mm | 10 – 30 |
| Rack thickness (back to tip) | 16 mm | 10 – 25 |
| Rack module | 2 mm | 1 – 4 |
| Pinion module | 2 mm | 1 – 4 |
| Pinion teeth | 20 | 10 – 40 |
| Pinion face width | 24 mm | 10 – 40 |
| Pinion bore | 20 mm | 10 – 30 |
| Shaft diameter | 20 mm | 10 – 30 |
| Shaft length | 180 mm | 120 – 300 |
| Shaft axis height | 100 mm | 60 – 140 |
| Bearing 1 Y position | 110 mm | 50 – 250 |
| Bearing 2 Y position | 290 mm | 200 – 350 |
| Gear set module | 1.5 mm | 1 – 3 |
| Large gear teeth | 80 | 40 – 120 |
| Small gear teeth | 16 | 10 – 40 |
| Gear face width | 20 mm | 10 – 30 |
| Generator shaft diameter | 10 mm | 6 – 15 |
| Generator body diameter | 40 mm | 30 – 60 |
| Generator body length | 80 mm | 50 – 120 |
| Bracket plate thickness | 6 mm | 4 – 10 |
| Bracket X width | 120 mm | 80 – 160 |
| Bracket Z height | 80 mm | 60 – 120 |
| Bracket horizontal Y extension | 80 mm | 40 – 120 |
| Rack mounting boss diameter | 30 mm | 15 – 50 |
| Keyseat width | 6 mm | 4 – 10 |
| Keyseat depth | 3 mm | 1 – 5 |
Every value above is a live dimension. Open a model like this in the editor and each one becomes a slider you can drag before exporting.
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