Subdivision of bulldozers, Indian bulldozer chain factory
Crawler dozer (also known as crawler dozer) was successfully developed by Benjamin Holt, an American, in 1904. It was formed by installing a manual lifting bulldozer in front of the crawler tractor. At that time, the power was steam engine. Later, crawler dozers driven by natural gas power and gasoline engine were developed. The bulldozer blade was also developed from manual lifting to wire rope lifting. Benjamin Holt was also one of the founders of Caterpillar Inc. in the United States. In 1925, Holt Manufacturing Company and C 50. Best Bulldozer Company merged to form Caterpillar Bulldozer Company, becoming the world’s first manufacturer of bulldozer equipment, and successfully launched the first batch of 60 bulldozers with diesel engines in 1931. With the continuous progress of technology, the bulldozer has been powered by diesel engines, and the bulldozer blade and scarifier are all lifted by hydraulic cylinders. In addition to crawler type bulldozers, there are also tire type bulldozers, which are about ten years later than crawler type bulldozers. Crawler bulldozers have better adhesion performance and can exert greater traction, so the variety and quantity of their products at home and abroad are far more than those of tire bulldozers. Internationally, Caterpillar is the largest engineering machinery manufacturing company in the world. Its caterpillar bulldozers include large, medium and small series D3-D11, the largest D11 RCD, and the flywheel power of diesel engine reaches 634kw; Komatsu, a Japanese company, ranked second. In 1947, it began to introduce and produce D50 crawler bulldozers. There are 13 series of crawler bulldozers, ranging from D21-D575, the smallest is D21, the flywheel power of diesel engine is 29.5kw, the largest is D575A-3SD, and the flywheel power of diesel engine is 858kw. It is also the largest bulldozer in the world at present; Another unique bulldozer manufacturer is Liebheer Group of Germany. Its bulldozers are all driven by hydrostatic pressure. After more than ten years of research and development, this technology introduced a prototype in 1972. In 1974, it began to mass produce PR721-PR731 and PR741 hydrostatic driven crawler bulldozers. Due to the limitation of hydraulic components, its maximum power is only 295Kw, and its model is PR751 mining.
The above three bulldozer manufacturers represent the highest level of crawler bulldozers in the world today. Other foreign manufacturers of crawler bulldozers, such as John Deere, Case, New Holland and Dreista, also have a high level of production technology. Indian bulldozer chain factory
The production of bulldozers in China began after the founding of New China. At first, the bulldozer was installed on the agricultural tractor. With the development of national economy, the demand for medium and large crawler bulldozers in large mines, water conservancy, power stations and transportation departments is increasing. Although the manufacturing industry of medium and large crawler bulldozers in China has made great progress, it can no longer meet the needs of national economic development. Therefore, since 1979, China has successively introduced the production technology, process specifications, technical standards and material systems of crawler bulldozers from Komatsu Company of Japan and Caterpillar Company of the United States. After digestion and absorption, and key technologies were tackled, a pattern dominated by Komatsu technology products in 1980s and 1990s was formed. Indian bulldozer chain factory
Since the 1960s, there have been about four manufacturers in the domestic bulldozer industry. The reason is that the processing requirements of bulldozer products are high, the difficulty is great, and the mass production requires large investment. Therefore, ordinary enterprises dare not get involved easily. However, with the development of the market, since the “Eighth Five Year Plan”, some large and medium-sized enterprises in China have begun to concurrently operate bulldozers according to their own strength, such as Inner Mongolia No.1 Machinery Factory, Xuzhou Loader Factory, etc., and expanded the bulldozer industry team. At the same time, a small number of enterprises began to go downhill due to poor management and the need to adapt to market development, and some have withdrawn from the industry. At present, domestic bulldozer manufacturers mainly include Shantui Construction Machinery Co., Ltd., Hebei Xuanhua Construction Machinery Co., Ltd., Shanghai Pengpu Machinery Factory Co., Ltd., Tianjin Construction Machinery Factory, Shaanxi Xinhuang Industrial Machinery Co., Ltd., Yituo Construction Machinery Co., Ltd., etc. In addition to the production of bulldozers, the above companies also began to engage in the production of other construction machinery products, such as Shantui, which also produces road rollers, graders, excavators, loaders, forklifts, etc. Indian bulldozer chain factory
Post time: Sep-21-2022
