It is reported that China's construction machinery high-end hydraulic parts market demand is huge, accounting for about 12.5% of the world market, ranked fourth after the United States, Japan, Germany. At present, domestic hydraulic products can only meet the needs of middle and low grade supporting products, high-end products rely on imports and expensive. Data shows that China's construction machinery industry profit 70% to import parts and components. High-end hydraulic components for a long time rely on imports, affecting the construction machinery industry independent innovation and even related to industrial safety, but also affect the development of the hydraulic industry. Therefore, solving the problem of long-term dependence on imports of high-end hydraulic components of construction machinery has become one of the important tasks during the "twelfth five-year plan" period.
Why can't such a difficult problem be solved for a long time, and then harm is widespread? Industry analysis believes that, first of all, the host enterprises are happy to see the expansion of market share, neglect of the hydraulic components and other key basic parts of the investment in technical reform, especially in the industry just began to develop rapidly in the first few years, the speed of market expansion let people indulge in high sales, and intentionally or unintentionally ignore this problem. Secondly, the investment in technological transformation such as basic parts is not only long cycle and large amount of capital, but also common difficulties in some industries. Some problems cannot be solved by individual enterprises independently. After experiencing these years of rapid development, the construction machinery industry overcapacity, lack of technical innovation, weak foundation and other problems have emerged.
China's equipment manufacturing industry is big but not strong. Domestic high-end hydraulic components in short supply, has dragged the hind leg of industrial development. Summary of the development of China's high-end hydraulic components lack of power one of the important reasons, is a long time the main distribution of separation, alone, each fight.
It is an important time to promote the development and research of key components such as hydraulic components. Chinese hydraulic industry enterprises to carry out the equipment manufacturing industry adjustment and revitalization of planning under the state council, implement the strategy of "host and supporting synchronous development", realize "as soon as possible to reverse the important fittings depend on import situation" task, by the ministry of equipment department led by set up the industrialization of high-end hydraulic engineering machinery parts and systems work platform, and have made some progress. As a production and demand docking platform, its first priority is to achieve the main engine factory and hydraulic parts factory docking. According to the market principle, the main engine plant and the matching plant should coordinate their production and demand, and establish a joint venture to achieve mutual benefit and mutual benefit.
Selection of instructions
1. Read the chapter on how to order power units carefully and fill in the specifications and models according to the actual requirements.
2, according to the need to achieve the hydraulic function, select the corresponding hydraulic schematic diagram.
3, according to the hydraulic cylinder load size and piston movement speed, reasonable selection of gear pump displacement, system working pressure and motor power, determine the hydraulic power unit technical parameters.
4, according to the situation to determine the motor and solenoid valve voltage form.
"High-end construction machinery hydraulic components and system application and industrialization of collaborative work platform" successfully established, the platform since October 2011, by the ministry of industry and information technology equipment department under the state council in conjunction with the China construction machinery industry association, China association of hydraulic pneumatic seal industrial organization engineering machinery factory, hydraulic parts factory, set up a joint scientific research institutes and universities. According to "sanki planning", it is market demand driven, government guidance, industry association to organize and coordinate, engineering machinery enterprises, hydraulic components and related accessories and materials production enterprises, research institutes and universities volunteered for the political, combining production, study and research, with an open industrialization collaborative work platform, is also more perfect, effective and sustainable system of new type of independent innovation. Its function is to break the host enterprise and hydraulic parts of the enterprise development present situation of "two pieces of skin", implement the multidisciplinary, cross-industry, cross-sectoral, a full range of coupling, industrialization projects and intellectual property rights, to achieve seamless docking between industries and enterprises, make full use of industry resources, adjust product structure, to speed up the high-end hydraulic components of independent innovation and industrialization process, to solve the problem of engineering machinery high-end long-term dependence on imported hydraulic components of the key issues to provide a good platform.
