Wheel

The first wheel - it was an ice rink. In Ancient Egypt builders of pyramids to facilitate movement They put round logs under huge stone blocks. After several centuries, two round logs, cut off from a log, were connected by an axis. Such a "skating rink", attached by an axis to the wagon, no longer had to be put under the moving cargo. Later, wheel knocked out of the boards. Finally, a wheel with spokes and a forged rim appeared on the roads. But the evolution of the wheel did not end there. Nowadays the wheel is not only equipped with a pneumatic tire, but also has found "wheels in the wheel" - ball bearings. Oval, hexagonal, spiral wheels were created for experimental all-terrain vehicles.

The earliest clay wheel models are found on the territory of modern Romania and Ukraine (the Neolithic culture of Cucuteni - Tripoli)

The earliest clay wheel models are found on the territory of modern Romania and Ukraine (the Neolithic culture of Cucuteni - Tripoli). These findings date back to the last quarter of the 5th millennium BC. Then - in the 4th millennium - they appear in the territories of modern Germany, Poland and in the South Russian steppes of the Northern Black Sea Region. More and more material evidence supports the fact that the "very first" wheel, similar to the modern one, appeared in the West, and not in the East.

In a new era of its development, the wheel got in the way of cosmic research. Lunar vehicles, lunar cars, required the creation of new types of wheels, not afraid of vacuum, nor the cosmic cold, nor the heat . Czech engineer J. Matzkerle invented a wheel that is capable of moving itself. It consists of separate pneumatic sections, the pressure in which can be selectively changed. As soon as the section passes the bottom dead center, the pressure in it is raised, the volume of the section increases, and it pushes the wheel in the desired direction.

A peculiar development of this idea was the wheel of Swedish designers, consisting of eight free rotating rollers of solid rubber. The rollers are placed at an angle of 45 degrees to the plane of the wheel and are moved from the hydraulic drive. Thanks to this, the machine without any complex maneuvers can move back, forward, in different directions.

French engineers have created a walking wheel, consisting of three small wheels, connected by a triangle. On a smooth road, the triangle is turned downwards by the top, and the car travels only on four wheels. On a bad road, the triangle turns down the base and is supported by eight wheels, the area of the pillar increases. And in conditions of complete impassability, the entire triangle begins to rotate, each wheel gets the opportunity to step over obstacles. Perfection continues. It is interesting, in what other constructions does the wheel seem to us in the future?..

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