In Central America, Maya invented the wheel. At temples can be seen on stone ornaments as a spoked wheel or gear. How far is from finds, but they used it only in applications that did not allow external loads, as for the wheel to represent their calendar and toys (Karaoke on 4 Wheels). Even in pre-Columbian days they used wheel, even gears, in more or less precision equipment. Cars are but in ancient American cultures has not been established. This is possibly due to lack of appropriate draft animals.
As the material only wood was used for thousands of years. The first spoke wheel had bronze spoke, later in Bronze Age and then outweighed wooden spoke wheel only involving the rubbing on the inner surface of axle hub and the outer race of rim with metal was misty. Advances in metallurgy towards ever more stable metals found then also use.
During the Bronze Age, the wheel was known to his present form of disc - the lighter spoked - further developed. The spokes form was created by removal of unnecessary for the function of wheel portions of wheel between the hub and the outer rim. To simple machine elements counts usually not rolling, but only the spinning wheel (for example wheel, steering wheel). A vehicle is now called the complex technical component or complex machine element.
The design of wheel was always (later paths and roads) matched to surface to be traversed, and improves the surface corresponding to increased requirements. Steel frost on wooden rim wheel for wheelbarrows, two- or four-wheeled wagons, carts or carriages on farmland, field or boardwalks or cobbled streets or the first commercially operated electric tram in FOTG on rails.
The edge of tread was chamfered or rounded. Some faces were so well preserved that smoothing strokes of a tool can be seen. The wheel created from alder wood belonged to a car whose front could not swing. When changing the direction the draft animals dragged the front of car to side until the drawbar pointed in desired direction.
In loop but some of load and the design weight to carry, they had an advantage over other means of transport a good off-road capability. When using a sledge and rod loops usually a high sliding resistance was overcome. A transport rollers was possible only on well prepared surface and short distances.
Most accurate wheel made of plastic are used in precision engineering for power transmission as well as on switch. The wheel and axle system is used mainly for transport; on the one hand on vehicles other than to force deflection of hoists. Axes are used for carrying loads and therefore stressed mainly by bending; Waves and transmit torques (torsion) are therefore mainly exposed to torque.
Become wheel by means of bearings rotating on axes - now mostly only journal - mounted a vehicle, a substantial reduction in friction forces and thus energy is thus compared to grind the transportable object over a distance to be traveled or saving transport of heavy goods . A fast movement of goods and people, primarily on relatively flat paths obtained.
As the material only wood was used for thousands of years. The first spoke wheel had bronze spoke, later in Bronze Age and then outweighed wooden spoke wheel only involving the rubbing on the inner surface of axle hub and the outer race of rim with metal was misty. Advances in metallurgy towards ever more stable metals found then also use.
During the Bronze Age, the wheel was known to his present form of disc - the lighter spoked - further developed. The spokes form was created by removal of unnecessary for the function of wheel portions of wheel between the hub and the outer rim. To simple machine elements counts usually not rolling, but only the spinning wheel (for example wheel, steering wheel). A vehicle is now called the complex technical component or complex machine element.
The design of wheel was always (later paths and roads) matched to surface to be traversed, and improves the surface corresponding to increased requirements. Steel frost on wooden rim wheel for wheelbarrows, two- or four-wheeled wagons, carts or carriages on farmland, field or boardwalks or cobbled streets or the first commercially operated electric tram in FOTG on rails.
The edge of tread was chamfered or rounded. Some faces were so well preserved that smoothing strokes of a tool can be seen. The wheel created from alder wood belonged to a car whose front could not swing. When changing the direction the draft animals dragged the front of car to side until the drawbar pointed in desired direction.
In loop but some of load and the design weight to carry, they had an advantage over other means of transport a good off-road capability. When using a sledge and rod loops usually a high sliding resistance was overcome. A transport rollers was possible only on well prepared surface and short distances.
Most accurate wheel made of plastic are used in precision engineering for power transmission as well as on switch. The wheel and axle system is used mainly for transport; on the one hand on vehicles other than to force deflection of hoists. Axes are used for carrying loads and therefore stressed mainly by bending; Waves and transmit torques (torsion) are therefore mainly exposed to torque.
Become wheel by means of bearings rotating on axes - now mostly only journal - mounted a vehicle, a substantial reduction in friction forces and thus energy is thus compared to grind the transportable object over a distance to be traveled or saving transport of heavy goods . A fast movement of goods and people, primarily on relatively flat paths obtained.
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