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Rotation Blooms

Medium Exhibit Stands · Mechanics & Kinematics

Operation: Turn the handwheel; observe the movement of the petals. Function Overview: The exhibit consists of a planetary gear mechanism, belt drive mechanism, flower pattern, and display stand. When the handwheel is turned, the petals transform into a flower and then decompose back into petals under the drive of the transmission mechanism. Scientific Principle: How do the petals form a "flower" during movement? Each petal is controlled by gears used to transmit motion and force, such as planetary gear trains and synchronous pulleys. When the ring gear and planet gears of the planetary gear train rotate at different speeds, the ring gear rotates on its axis, and the planet gears perform a compound motion of rotation and revolution. The gear components connected to the planet gears via synchronous pulleys also perform this compound motion, but the planet gears and gear components only revolve relative to the ring gear. Therefore, each petal fixed on the gears forms a variable "flower" through the intersection and overlap of their revolutionary motions. Gears are ubiquitous in life, from the operation of large machines and the running of vehicles to the precise rotation of the hour, minute, and second hands in mechanical watches. After going home, look up information online and count how many gears are in a mechanical watch? What hands do they control respectively?

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