The scientific and technological innovation project undertaken by China National Heavy Duty Truck Group Co., Ltd. has recently passed the acceptance test for the development of the Automatic Mechanical Transmission (AMT) for heavy-duty commercial vehicles. The project is fully and completely implemented in the intelligent shifting law, V-cycle development process, and the AMT industry. Breakthroughs in key technologies such as chemical, clutch actuators, matching and calibration technologies
Three technological innovations to achieve strategic shift
The reporter walked into the new production plant of the Big Tooth Company, and the clean and neat production workshop showed modern production elements everywhere. The most advanced domestic Makino processing center flexible box automatic production line, shaft grinding processing automatic production line, AGV gearbox assembly line, Ipson and Aidin forest heat treatment production line, Germany Huerte razor mill, Switzerland Les Halles, Germany card P & Li Liebherr gear grinding machines ... These internationally advanced equipment allow Big Tooth Company to not lose at the starting line of quality when the product is "born". In the past September, the monthly output of export products exceeded 20,000.
It is hard to imagine that here in the past it was a farm machinery company that produced agricultural machinery gear and tractor gearboxes. The varieties were single and the crafts were backward. Enterprises once faced the puzzle of "finding rice under the pot" and the test of "survival crisis".
At the end of the last century, Dagou seized the opportunity to invest more than 3 million yuan in the introduction of the technology of the transmission of the TMH402 gearbox. This technology introduction has not only adjusted the product structure, but also broadened the road for the survival and development of Big Tooth and laid a new foundation. The company has sent technical personnel 7 to Japan for training, and Japanese experts have conducted on-site guidance and consultation for 8 times. In 5 years, Big Tooth not only produced products that fully comply with Nissan Diesel's standard, but also absorbed and digested Nissan Diesel's technology and formed its own development, design, manufacturing, and management system. On the basis of digesting and absorbing the technology introduced for the first time, Big Tooth has independently developed a variety of new gearboxes, expanding the product from the initial introduction of DC5J80T to DC5J90T, DC6J70T, DC6J80T, DC6J90T, and initially formed a series of multi-species pattern.
In 2001, Big Gear invested 10 million yuan to introduce the Nissan Diesel MPS62B gearbox manufacturing technology. Based on this introduction, the company independently developed the DC7J100T, DC7J120T, and DC6J85TZ series gearboxes, which resulted in a significant increase in the level of product technology and serialization, and the product's adaptability.
In 2002, Dazhaga redoubled its efforts and invested 25 million yuan to introduce the manufacturing technology of the new multi-speed gearbox with the advanced level of Nissan Diesel MPT21B. Based on this gearbox as a technology platform, GZ has vigorously implemented product research and development and independent innovation. In less than three years, new gearboxes such as DC9J120T and DC9J135T have been developed. During this time, the heavy-duty transmission produced by Big Gear once reached 45% in the national market, the front axle of the tractor reached 80%, and the Cummins engine gear reached 40%. In the words of Datooth, it is said that “when the annual sales volume of Big Tooth was 1 billion yuan, the sales of Fast that became dominant in the transmission industry were only about 300 million yuan at that time.â€
With three technological innovations, Big Gear finally achieved a strategic shift from agricultural machinery companies to auto parts companies.
Three magic cast the market
In November 2008, Dazhe joined China National Heavy Duty Truck and became a wholly-owned subsidiary of China National Heavy Duty Truck Group. The Group not only re-planned the future of Big Tooth, but also further improved the Big Tooth product chain, and started the R&D of large gear HW series gearboxes. New Era. “In the past, it took at least three years to develop a mature gearbox product. Now we have developed five new products in more than six months. The development of large gears has been enhanced thanks to the Group’s strong technical support.†The person in charge of the center said. After the company determined the gearbox technology route and the group-type spectrum, the large-tooth technology R&D personnel developed, designed and redesigned various types of gearbox new products to over 60 items in 3 years. The products covered the group companies and domestic light, medium and Heavy-duty vehicle manufacturers match the horsepower segment for all types of engines.
Technological innovation is the eternal theme of corporate progress. The company has entered the automobile industry by the agricultural machinery industry, and has maintained a rapid development momentum. It has benefited from Dafang relying on technological innovation and actively participated in the completion of the national series of scientific and technological research projects. With the support of the national, provincial and municipal science and technology departments, the company has invested tens of millions of yuan each year to ensure the implementation of scientific and technological innovation projects, making the company's processing methods more advanced, and the manufacturing technology level and production capacity have undergone a qualitative leap in order to produce high-tech content. High value-added products provide strong material guarantees.
According to Ge Yuxi, deputy general manager and chief engineer of the Group, any new product has a temporary lead. The TMH402 is a 5-speed belt synchronizer gearbox. It has a lot of obvious advantages compared with some old gearboxes made in China. It is very popular among users. However, with the development of the national economy, especially the acceleration of highway construction, the demand for trucks is also increasing, and the original products obviously cannot adapt to economic and social development. "In the eyes of Big Tooth Company, products that cannot cater to the market are also considered to be a decline in quality." Ge Yuxi said, how to better develop products that meet customer needs is the key to success. Dazhe set of products "fuel-king king" "engineering king" "powerful king" three magic in one, heavy car driving, car enjoyment, the best driving conditions to achieve the best fuel economy.
At present, Big Tooth "Auto Transmission Engineering Laboratory" has been recognized as a national engineering laboratory. The production of engine gear has become China's production base with the highest level of equipment and strongest quality control capability. Commercial vehicle gearbox has formed a complete spectrum of products. From 5th to 16th gear, it can match all commercial vehicles from 44kw to 331kw, and according to different needs, it adopts high-gear, full-aluminum shells. Short-stroke carbon particle synchronizer, forced lubrication, pneumatic assist and other advanced technologies can fully meet the requirements for the use of various vehicles such as mini-vehicles, light vehicles, medium-sized vehicles, heavy-duty vehicles, road vehicles, engineering vehicles, and passenger cars.
Steadily advancing into International Avenue
In the second half of 2004, Big Tooth Company proposed to change the “following model†that used to rely solely on the introduction, digestion, and absorption of product technology, and took a new path of international cooperation in the development of new products, striving to develop internationally advanced levels through cooperation with world-class companies. A new generation of low-cost gearboxes. The company has sent 5 batches of engineers and technicians to go to Austria, and jointly developed the DC16J200T gearbox with the world famous company AVL. The large-tooth technology R&D personnel introduced to the reporter that 16 forward gears are the most gear-shifting gears in the country and have a rather strong road surface passing capacity and ramp operation capability. For road operation vehicles, not only the heavy-duty operation performance is obvious, but also Excellent speeding capability. This series of transmissions uses the world's advanced transmission manufacturing technology, and also has an intelligent system for overspeed and overload protection alarms, rear sub-box synchronizer overload protection, protection against hanging and mis-stop protection, and control system protection. The series of transmissions has been fully put on the market, which indicates that the domestic production of multiple torque and large torque products already has the ability to replace imported products in the tractor market.
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