Changsha three-lobe Roots fan gear is Zhuzhou Gear, the main Zhuzhou Gear Co., Ltd. was founded in 1958, is now a subsidiary of Weichai Group Holdings, is China's key backbone enterprises in the gear transmission industry, the drafting unit of China's gear industry standards, selected as “China's top 500 machinery”, and has been named “China's top 100 auto parts suppliers”, “China's machinery industry management innovation demonstration enterprise”. It has been selected as one of the "Top 500 Chinese Machinery", and has been honored as "China's Top 100 Auto Parts Supplier" and "Model Enterprise of Management Innovation in China's Machinery Industry" for a number of times.
Zhuzhou Gear is engaged in the R&D, manufacturing and sales of transmissions, distributors, planetary gearboxes, new energy vehicle transmissions and powertrain assemblies with the core of transmission assembly, and the products are exported to domestic and foreign markets. The company now has total assets of 1 billion yuan, nearly 1,000 employees, more than 300 engineers and technicians, including more than 50 doctors, masters and senior engineers. The company has strong technical strength, is a national high-tech enterprises, “national enterprise technology center”, “Hunan Province, automotive gear transmission engineering technology research center”, and with domestic and foreign professional R & D institutions and colleges and universities to establish a good relationship with the quality management system; has a perfect quality management system; the company has a perfect quality management system. It has a perfect quality management system and has passed ISO9001, QS9000, IATF16949 and GJB9001B certifications; it has a strong technological equipment capacity, with an annual output of 450,000 sets of passenger car transmissions, 400,000 sets of new energy transmissions and powertrain assemblies, and 80,000 sets of splitters and planetary drive assemblies.
Zhuzhou Gear Company has won high recognition from the society and customers with high quality products and services, and has become the first choice of major domestic vehicle and machine factories, and is the designated supplier of the military for the National Day parade and the 90th anniversary of the founding of Zhu Ri and the military parade. In recent years, the company vigorously develops new energy vehicle transmission and powertrain assembly business, adhere to the product, market dual-wheel drive, in the industry leading position.
How do you test the gears of a Roots fan?
Frequently asked questions about gears: Roots fan gear failure pattern point fatigue pitting, gear wear and gear tooth fracture and other forms, when these gear defects occur, should be immediately shut down, repair or replace the gear before running.
Gear fatigue is mainly due to the tooth surface in the intersection of contact surface application under repeated action, the occurrence of contact fatigue, resulting in a small piece of surface metal a small piece of low flaking, looks pitting shape. Gear fatigue pitting defects at the beginning of the pitting is relatively small, but with continued use, in the case of the effective force area of the tooth surface continues to reduce, pitting further expansion, pitting increases, pitting increases, until the entire tooth surface damage.
Tooth wear: Roots fan tooth wear defects are mainly gear meshing surface of a large number of materials to wear off the phenomenon is mainly manifested in the hardened layer of the tooth surface (such as nitrogen gasification layer or carburized layer) of the abrasion, gear lining material of the sharp damage; tooth thickness thinning, tooth type disorder, gear wear is serious, effective contact surface and non-contact part of the junction with the obvious abrasion of the step.
Gear tooth fracture: Roots fan gear tooth fracture defect is mainly due to the wheel tooth load is the root of the bending should be large, and there is a concentration of stress, repeat the load in the root part of the tooth will sometimes produce fatigue cracks, and gradually expand the gear tooth fracture, gear defects in this section sometimes due to a short-term overload or excessive impact load, the gear tooth also has a sudden fracture phenomenon.