A ski lift moves by using electric motors to rotate large wheels, called bull wheels, which pull a cable that carries chairs (or gondolas) up and down the mountain.
Here's a more detailed breakdown:
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Electric Motors: Modern ski lifts rely on powerful AC/DC electric motors. These motors provide the rotational force needed to drive the entire system.
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Bull Wheels: The electric motors are connected to one or more large wheels, known as bull wheels. The cable that carries the chairs is looped around these wheels. As the bull wheels rotate, they pull the cable along.
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Cable System: A continuous loop of steel cable is the backbone of the ski lift. This cable is what the chairs (or gondolas) are attached to.
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Towers: Towers are strategically placed along the ski lift route. They support the cable and keep it elevated off the ground.
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Sheaves: At each tower, the cable passes over or under sheaves (grooved wheels). These sheaves are attached to the towers and guide the cable, ensuring a smooth and efficient ride. The positioning (above or below the tower) depends on terrain and design.
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Carriers: The chairs (or gondolas) are called carriers and are attached to the cable. These carriers provide seating or enclosed cabins for skiers and snowboarders.
In essence, the electric motor turns the bull wheels, which then pulls the cable, moving the chairs along the cable supported by the towers. The sheaves on the towers ensure a smooth and directed path for the cable.
