HandCart Motorization

As part of the course , I along with a group of three people , contributed to the development of a detachable motorization system for standard rental handcarts. The goal was to improve user comfort by reducing the physical effort required to pull heavily loaded carts, commonly used in leisure, logistics, and family outings.

The project involved analyzing the structural constraints of the existing cart, defining user requirements, and creating a compact, tool-free device that can be mounted or removed within three minutes. Key specifications included a maximum device weight of 6 kg, the ability to pull loads up to 75 kg on a 10% incline, maintaining a walking pace of 5 km/h, and ensuring safety, reusability, and IP54 protection.

The result was a conceptual design that combines functionality, user-friendliness, and aesthetic considerations, aligning with practical rental use cases and last-mile logistics applications.

This was an interdisciplinary project involving collaboration with students from Mechanical, Mechatronics, Electrical, and Industrial Engineering. Working across these diverse fields allowed us to combine expertise in design, electronics, control systems, and manufacturing processes, while also providing an excellent opportunity to learn from other disciplines and broaden our understanding of engineering as a whole.

My Main Contributions:

  • Developed the overall product concept, defining functional requirements and design goals.

  • Created detailed engineering drawings to guide development and ensure manufacturability.

  • Built a 3D CAD model of the product to visualize the design and support further prototyping.

During the development process, we created two main models. The first model proved unsuitable because it exceeded the weight limit, making it impractical for portability. To address this, we redesigned the device with a more lightweight structure, resulting in the second model, which successfully met the project’s weight requirements while maintaining performance and functionality.

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