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In today's society, many places utilize power conversion devices; power conversion devices are mechanisms that convert nature energy into mechanical energy. They are mainly used to convert one form of energy into another to achieve motion control. Common power converters include electric cylinders, pneumatic cylinders, hydraulic cylinders, etc. With the current trend in technological development, there is a growing emphasis on green energy applications to reduce pollution and minimize the impact on the Earth. Hydraulic cylinders have gradually been replaced by electric cylinders, offering advantages of being more energy-efficient, causing less pollution, and being more environmentally friendly. Additionally, electric cylinders are easily integrated with electric control systems, enabling high-precision control. However, the electric cylinders are currently designed for high-speed and light load applications.
This research first collects relevant patents and existing products to summarize three types of electric cylinder designs: linear transmission, parallel transmission, and cross-axis transmission between the motor shaft and the output shaft. Next, the study analyzes and explores designs that generates greater driving force, using SolidWorks for the engineering drawing of prototype. Three gearbox designs are proposed: a parallel shaft with three-stage spur gear reducer, a parallel shaft with two-stage helical gear reducer, and a cross-axis worm gear reducer. Ultimately, the cross-axis worm gear reducer is chosen for the electric cylinder design. Compared to existing products, this research design can produce higher driving force, possesses a self-locking function to minimize risks, and aligns with the current technological trend, replacing the hydraulic cylinders.
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