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Considerations regarding Motorcycle Adaptation as a Power Source for Agriculture
Consideraciones sobre la adaptación de motocicletas como una fuente de potencia para la agricultura
DOI:
https://doi.org/10.15446/ing.investig.111232Keywords:
mini-tractors, motorcycle adpatation, agricultural machinery (en)minitractores, adaptación de motocicletas, maquinaria agrícola (es)
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In Colombia’s agricultural areas, the number of 125 cm3 motorcycles is increasing, while the availability of labor is decreasing. Nevertheless, the power requirements for agricultural work remain constant. Technological developments in the country have made some adaptations to motorcycles, including a new rear chassis and a different chain transmission, in order to have a power source suitable for small terrains and hillside areas that is accessible in terms of cost and technological level. The objective of this work was to analyze the stability and pull capacity of a modified motorcycle (MM AKT 2013 EVO 125 cm3 - 7.5 kW Street – Sport type), by studying the power transmission of the original and the newly added chassis via a static overturning and pulling capacity analysis. With the driver and a total mass of 288 kg, this MM could pull up to 377.3 kg on flat ground with the drawbar 310 mm above the ground. The imminent roll-back occurred by pulling 299.5 kg at an inclination of 37.1°. The second chain in the new chassis caused a lateral force, which changed depending on the speed selector in the gearbox and the engine’s rpm, and approached its maximum the further apart the two chains were. It was concluded that an MM can pull implements on flat terrain and slight slope, as long as they are designed while considering the geometry and capacity of the vehicle.
En las zonas agrícolas de Colombia, el número de motocicletas de 125 cm³ está aumentando, mientras que la disponibilidad de mano de obra está disminuyendo. No obstante, los requerimientos de potencia para el trabajo agrícola permanecen constantes. Los desarrollos tecnológicos en el país han hecho algunas adaptaciones a las motocicletas, incluyendo un nuevo chasis trasero y una transmisión de cadena diferente, con el fin de contar con una fuente de potencia adecuada para terrenos pequeños y zonas de ladera que sea accesible en términos de costo y nivel tecnológico. El objetivo de este estudio fue analizar la estabilidad y la capacidad de arrastre de una motocicleta modificada (MM AKT 2013 EVO 125 cm³ – 7.5 kW tipo Street–Sport), mediante el estudio de la transmisión de potencia del chasis original y del chasis recientemente adicionado a través de un análisis estático de volcamiento y capacidad de tiro. Con el conductor y una masa total de 288 kg, esta MM pudo tirar hasta 377.3 kg en terreno plano con la barra de tiro a 310 mm sobre el suelo. El vuelco inminente ocurrió al halar 299.5 kg en una inclinación de 37.1°. La segunda cadena en el nuevo chasis causó una fuerza lateral, la cual cambiaba según el selector de velocidades en la caja de cambios y las rpm del motor, y se aproximaba a su máximo a medida que las dos cadenas se separaban. Se concluyó que una MM puede halar implementos en terreno plano y en pendiente ligera, siempre que estos se diseñen considerando la geometría y la capacidad del vehículo.
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