China's auto industry is standing at the crossroads
Li Shufu, member of the National Committee of the Chinese People's Political Consultative Conference (CPPCC), and China's first privately-owned automobile company, chairman of the board of directors of Geely Holding Group, is known as the "Chinese car madman." A few days ago when he was interviewed by Xinhua News Agency reporters, he expressed his concerns about the prosperity of China's auto industry. "The 'local ancestry' will not be identified as a deadly threat" “Last year last year, I saw media reports that many car repair shops in Guangdong have changed their business practices. The cars that were originally made in China have to be replaced with imported car brands. If they are joint venture vehicles, they will take the car off. The body represents the Chinese symbol and the Chinese character and is afraid of revealing "local ancestry." “I’ve seen more and more people transforming the domestic and joint-venture automobile logos into foreign logos on the streets across the country. I really think this is a dangerous signal. We can catch up if the economy is behind, but if we ourselves Consumers have lost confidence in the “local ancestry†from the cultural and spiritual level, which is a deadly threat to Chinese cars!†Li Shufu said: "Over the years, there has been a clear feeling that China's auto autonomous development enterprises and independent brands lack adequate support for the policy environment, market environment, and public opinion environment. Social attitudes and consumer attitudes lack the necessary correct guidance, and even influence the majority of companies. And consumer confidence in the national automotive industry. “Foreign joint ventures and market-for-technology are all good policies and lay a solid foundation for the development of Chinese autos. However, we must pay attention to the fact that, apart from capital accumulation, there is no accumulation of our technologies and brands. In the investment, the people naturally do not agree with your brand, which is the source of the vehicle change.†"We can't be a 'snacks' in the mouth of the international car race." "From the point of view of the speed and scale of the development of the Chinese automobile industry in recent years, it has indeed become a pillar industry in the national economy. But I always feel that the foundation of this "pillar" is not solid. Looking back on the introduction of joint ventures in Chinese cars for 20 years Performance, although it has promoted the development of China's auto industry, the products that can flourish are all people's brands. Even the Chinese “descent†that was once there is also ashamed to see people.†“Some people said that the current Chinese auto industry is more like a processing plant for multinational auto companies. This is not accurate, but it does express people’s concerns about the auto development capabilities of Chinese autos, and it also explains our “pillar industryâ€. 'There is no real 'rooting' in the homeland." Li Shufu said: “Now almost all the world’s multinational auto groups have revised the strategic deployment for the Chinese market at the beginning of this century. At present, the restrictions on foreign investment in industrial policies will gradually lose their influence on the independent industrial system as the further disintegration of tariffs. With the protection function embodied, these international automobile predators will adjust their strategic layout in accordance with their own interests, thereby further reducing the position of Chinese domestic auto companies in the overall market structure." "With the advancement of technology, the concept and essence of the core technology of the automotive industry will continue to change and develop. If we neglect the cultivation of our own technological development capabilities, we will not develop, and we will soon become an international automobile. The snacks in the mouth of the big crocodile, and once it is hard to return, our own industry chain will collapse and China's auto industry will lose its value in the global automotive industry, causing the industry to shrink or even subvert. "Chinese auto industry has no chance of failure" When Li Shufu “forced†into the Chinese automobile industry that year, he left a famous saying: “Please ask the country to give me a chance to fail.†After many years, Li Shufu, who has already become a successor, is still “thinking in the armsâ€: “Before the year 2000, China’s auto manufacturing industry still insisted on strict restrictions on domestic private capital, but before that, the same strict control of the original The examination and approval of the joint venture company has opened its mouth. In a few short years, the transnational companies in the automotive industry have almost all entered China, and our own company has not had the opportunity to become bigger and stronger.†Li Shufu said: “We have our own automobile industry. Having experienced 'congenital inadequacies' and being constrained by human beings at the same time and experiencing lack of indigenous identity at the same time, they have been forced to the middle of the crossroads and there is no chance of failure again." At the same time, it is also recommended that the domestic public opinion community should give more and more timely care and support to autonomous development enterprises and independent car brands, so that the whole society can maintain a long-term, stable and clear understanding of the importance of developing the national automobile industry at a new height. . â‘ Single acting cylinder: only one end of the cylinder has a piston rod. Air is supplied from one side of the piston to generate air pressure. The air pressure pushes the piston to produce thrust to extend and return by spring or self weight.
Compared with the electric actuator, the cylinder can work reliably under harsh conditions, and the operation is simple, and the basic maintenance free can be realized. Cylinder is good at reciprocating linear motion, especially suitable for industrial automation in the most transmission requirements - workpiece linear handling. Moreover, only adjusting the one-way throttle valve installed on both sides of the cylinder can simply achieve stable speed control, which has become the biggest feature and advantage of the cylinder drive system. Therefore, for users without multi-point positioning requirements, most of them prefer to use cylinder from the perspective of convenience. At present, most of the applications of electric actuators in the industrial field require high-precision multi-point positioning, which is the result that it is difficult to achieve with the air cylinder. Air Cylinder, Pneumatic Cylinder, double acting cylinder, single acting cylinder, rodless cylinder Glove Industry Co.,Ltd. , https://www.glovemech.com
“In the past 2003, the Chinese auto industry has seen continuous high growth for the second year in a row, with both sales and sales exceeding 4 million units, and total market sales exceeding 800 billion yuan, which has literally become a pillar industry of the national economy. In front of the harvest, I was really frustrated and unable to fight the spirit, because I saw that the only "Chinese heritage" on many domestic cars was being abandoned by our own consumers. I can't see Chinese cars. The prospect of independent development and creation of independent brands."
â‘¡ Double acting cylinder: supply air alternately from both sides of piston, output force in one or two directions.
â‘¢ Rodless cylinder: general term for cylinders without piston rod. There are magnetic cylinder and cable cylinder.
The reciprocating cylinder is called swing cylinder. The inner cavity is divided into two parts by the blade, and the air is supplied to the two cavities alternately. The output shaft swings, and the swing angle is less than 280 °. In addition, there are rotary cylinder, gas-liquid damping cylinder and stepping cylinder.
The electric actuator is mainly used for rotating and swinging conditions. Its advantage lies in the fast response time and the precise control of speed, position and torque through the feedback system. But when it needs to complete the linear motion, it needs to be transformed by mechanical devices such as toothed belt or screw rod, so the structure is relatively complex, and there are high requirements for the working environment and the professional knowledge of the operation and maintenance personnel.
advantage
(1) The requirement for users is low. The principle and structure of the cylinder are simple, easy to install and maintain, and the requirements for users are not high. Electric cylinder is different, engineering personnel must have certain electrical knowledge, otherwise it is likely to be damaged due to misoperation.
(2) The output force is large. The output force of the cylinder is proportional to the square of the cylinder diameter; The output force of the electric cylinder is related to three factors: cylinder diameter, motor power and screw pitch. The larger the cylinder diameter and power, the smaller the screw pitch, the greater the output force. The theoretical output force of a cylinder with a diameter of 50 mm can reach 2000 n. for the electric cylinder with the same diameter, although the products of different companies are different, they are basically no more than 1000 n. Obviously, the cylinder has more advantages in terms of output force.
(3) Strong adaptability. The cylinder can work normally in high and low temperature environment, and has the ability of dustproof and waterproof, which can adapt to all kinds of harsh environment. Because of a large number of electrical components, the electric cylinder has high requirements for the environment and poor adaptability.