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.
The rolling resistance on a firm, dry ground and the sliding resistance in bearings are common to substantially less than the sliding resistance with the use of a loop or of a carriage for transporting a load on dry ground. The abrasion material is also less than in grinding. Fellow with wheel and draft animals were readily available and durable for transportation for loads and people in parts of world.
Probably this Kurgan belongs to a leader of last phase of Kura Araxa culture that has clear links to Maikop culture. More detailed investigations are pending. The car recalls in construction of representation of a troop transport on the Standard of Ur. In grave were not only the obsidian and flint and amber beads. This supports the hypothesis that the car came long before the horse from the northern area and with the spread of Kura Araxa culture took the road to south. This oldest Radfunde are either assigned to burials in graves cart or bog finds from wetlands. The dates of sites currently allow no decision on a place of origin of bicycle and car technology. A more recent attempt pleads for. Example of a Central European car invention.
One of four in Glum, community Wardenburg in district of Oldenburg, found one-piece wheel from the Bronze Age had a scouring furrow, which was not incorporated throughout the turning circle. It was caused by the wagon body, which wore down the wrong current wheel. A shorter groove on the other hand shows that the wheel has attached also rotated.
A little earlier or at the same time also provided with bearings, rapidly rotating potter's wheel was known. An indication that the machine element and plain bearings was now well controlled: lubrication and minimize play. The first transport devices with which you could carry loads on land without wearing them were carriage and rod grinding.
Today, hard rubber tires are used on steel wheel as training wheel for. As for tracked vehicles, for carousels for cable cars and chairlifts or industrial vehicles such as forklifts. Plastic wheel with or without metal hub or bearings, often without tires are available for mobile tables, ladders (also above), Furniture, Pallet Trucks for euro-pallets and shopping carts (even with ridges for clawing on moving walkways).
Already in Stone Age began to reduce the heavy weight of disc wheel through grooves. Whether the fluted with symbolic patterns wheel, however, were suitable for transporting loads, is doubtful. A metal-temporal invention was the spoke, which was introduced around 2000 v. Chr. In Orient. With the stable and lightweight spoked wheel was built so-called chariot, so two-wheeled vehicles that would really be called carts. Since it was a good way to reduce the weight even more demanding wheeled tractors were built later.
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.
The rolling resistance on a firm, dry ground and the sliding resistance in bearings are common to substantially less than the sliding resistance with the use of a loop or of a carriage for transporting a load on dry ground. The abrasion material is also less than in grinding. Fellow with wheel and draft animals were readily available and durable for transportation for loads and people in parts of world.
Probably this Kurgan belongs to a leader of last phase of Kura Araxa culture that has clear links to Maikop culture. More detailed investigations are pending. The car recalls in construction of representation of a troop transport on the Standard of Ur. In grave were not only the obsidian and flint and amber beads. This supports the hypothesis that the car came long before the horse from the northern area and with the spread of Kura Araxa culture took the road to south. This oldest Radfunde are either assigned to burials in graves cart or bog finds from wetlands. The dates of sites currently allow no decision on a place of origin of bicycle and car technology. A more recent attempt pleads for. Example of a Central European car invention.
One of four in Glum, community Wardenburg in district of Oldenburg, found one-piece wheel from the Bronze Age had a scouring furrow, which was not incorporated throughout the turning circle. It was caused by the wagon body, which wore down the wrong current wheel. A shorter groove on the other hand shows that the wheel has attached also rotated.
A little earlier or at the same time also provided with bearings, rapidly rotating potter's wheel was known. An indication that the machine element and plain bearings was now well controlled: lubrication and minimize play. The first transport devices with which you could carry loads on land without wearing them were carriage and rod grinding.
Today, hard rubber tires are used on steel wheel as training wheel for. As for tracked vehicles, for carousels for cable cars and chairlifts or industrial vehicles such as forklifts. Plastic wheel with or without metal hub or bearings, often without tires are available for mobile tables, ladders (also above), Furniture, Pallet Trucks for euro-pallets and shopping carts (even with ridges for clawing on moving walkways).
Already in Stone Age began to reduce the heavy weight of disc wheel through grooves. Whether the fluted with symbolic patterns wheel, however, were suitable for transporting loads, is doubtful. A metal-temporal invention was the spoke, which was introduced around 2000 v. Chr. In Orient. With the stable and lightweight spoked wheel was built so-called chariot, so two-wheeled vehicles that would really be called carts. Since it was a good way to reduce the weight even more demanding wheeled tractors were built later.
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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