Pulley and Rope

Pulley is a mechanical device and a part of rope access equipment. However, the pulley has a lot of roles in our daily life. For example in an elevator, multiple pulleys are using to work it properly. Similarly in a cargo lift system, to lift heavy items into higher floors mechanical devices working with pulleys are using.

Pulleys are a part of many types of exercise equipment. In a construction site, we can see lifting vehicles to lift and place heavy materials, they are using no. of pulleys in order to function. A simple example of a pulley is curtains at a theatre.

The curtain mechanism is similar to blinds on windows. To move the blinds up and down, pulley systems are used. When we pull the cord on the blinds, the pulley system connected to it is acting and it causes the blinds to open or close. For the flagpoles also we are using pulleys to hoist the flag up or to bring it down.

Another example of a pulley is it can be used to place birdfeeders high in trees or on poles. By using this pulley system it is easy to pull them down when they need to be refilled or removed. We can see a lot of examples of pulleys around us. They have an important role in our daily life.

The basic model of a pulley is a small grooved wheel used with a rescue rope. In ancient times it was used to take water from dwells. A rope and a bucket connected to a pulley can lift the water from the bottom of the dwells.

Pulleys can be mainly categorized into three. fixed, movable, and compound pulleys. As the name indicates a fixed pulley's wheel and axle stay in one place. The flag pole is an example of a fixed pulley. If we pull down on the rope, it is possible to change the direction of the force. This is an advantage of a pulley mechanism.