Which country invented the tractor?

185 1 year, Fallas and Smith in England used steam engines to realize mechanized farming of farmland for the first time. Some people regard this as the beginning of agricultural mechanization, but at that time, their method was to put the steam engine at the head of the field and pull the plough share far away with wire rope. The name "tractor" also came into being. Later, with the development of steam engine manufacturing technology, a miniaturized steam engine appeared, which was installed on the chassis of the vehicle to drive the wheels, so that agricultural machinery could be directly driven from the field, which led to the birth of tractors. Alabat of France and R.C. Parvin of Illinois invented the earliest steam-powered tractors in 1856 and 1873 respectively. The tractor at that time was very similar to the early steam engine, but it had more horsepower and slower speed.

The original tractor was bulky, expensive and inconvenient to use, and often needed several people to operate. They are suitable for farming in the vast Yuan Ye, which is difficult for ordinary individual farmers to afford. 1889, Chad engine company in Chicago, USA, manufactured the world's first agricultural tractor using gasoline internal combustion engine-Bajia tractor. Because of its portability, convenient operation and high efficiency, the appearance of internal combustion engine laid the foundation for the popularization and application of tractors. At the beginning of the 20th century, Sweden, Germany, Hungary, Britain and other countries almost simultaneously produced tractors powered by diesel internal combustion engines. During the First World War, due to the war, the shortage of labor and the rising price of agricultural products promoted the development of agricultural tractors. During the period of1910-1920, the tractor driven by steam engine and the tractor driven by internal combustion engine launched fierce competition, and the latter showed greater superiority and gradually eliminated the former. Today's tractors use diesel internal combustion engines.

In the history of tractor development, people initially widened the steel wheels to increase the landing area and reduce the pressure, but the effect was not good. Later, they came up with a method of adding a rubber protective layer to the steel wheel. After the birth of automobile tires, people used solid and pneumatic tires for tractors. However, automobile tires are not completely suitable for tractors. First, the grooves of automobile tires are too shallow and thin. Secondly, it is found that the tractor's driving performance on soft ground is better when the tire is under-inflated than when the tire is fully inflated. 1932 American Fils Dang tire rubber company produced large-size high-pattern low-pressure pneumatic rubber tires. This is the first tire really suitable for agricultural tractors, which greatly improves the driving and traction performance of wheeled tractors.