Low-Speed Cargo Bicycle Balance
Design, Implementation, and Validation of an Active Kickstand Stabilization Mechanism for Low-Speed Cargo Bicycle Balance
B. de Vries (TU Delft - Mechanical Engineering)
J.K. Moore – Mentor (TU Delft - Biomechatronics & Human-Machine Control)
L. Marchal Crespo – Graduation committee member (TU Delft - Human-Robot Interaction)
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Abstract
As cities increasingly transition to car-free and low-emission zones, cargo bicycles have become a popular alternative for both companies and families. They allow for the efficient transport of goods and children while navigating busy urban areas without emissions. However, single-track cargo bicycles still have some limitations. Stability issues, especially at low and zero speeds, and the effort required to lift a heavy cargo bicycle onto its kickstand, reduce usability and safety. These problems are amplified by uneven load distribution and heavy cargo.
A prototype for an active kickstand stabilization mechanism was developed. A model was made where a simple spring-damper feedback system was placed on the roll degree of freedom of the cargo bicycle. After formulating design criteria, a design was created and manufactured, and the system was assembled on a cargo bicycle. The prototype was then tested to validate the design specifications.
The results show a measurable improvement in stability, especially when cycling off from a standstill. The system also stabilized the bicycle with a cargo of 50 kilograms on the luggage rack in addition to an 80-kilogram rider. These results show that an active kickstand stabilization mechanism is suitable for everyday use on cargo bicycles and can increase the safety and usability of the cargo bicycle.