China Construction machinery parts status

A reference parameter of domestic engineering machinery and equipment, the core components of foreign brands of engine, hydraulic parts, electric control system, it is often seen. What is more, some enterprises with foreign core components is in its products and get dizzy with success, with a hundred steps expose oneself to ridicule. A much more user groups, see assembly in some domestic fittings, always doubt performance and stability of the complete machine.

Quoted a media data display, profit contribution of Chinese construction machinery industry 70% to foreign high-end parts supplier, the remaining 30% of profits, the domestic enterprises should put together "fight at outrance".

Although the engineering machinery parts has formed a national, regional and enterprise of the three levels of the specialized production sales and supporting network, also introduced the manufacture technology of a large number of key parts, in recent years gradually accelerate the pace of joint venture and cooperation, the industry has gradually emerged in a number of reliable quality, advanced technology, service perfect parts products. But with the international leading parts company, supporting industry in both production scale, technology level, market share, product grade, quality, price and reliability of economic benefits and the international leading compared accessories company, the gap is still no time is allowed for explanation.

According to the survey, 80% of respondents think, domestic fittings products and foreign brand accessories products compared to the main weakness is poor product reliability. Some experts even said, compared with foreign advanced products, key components of domestic engineering machinery, both in technical performance, quality or reliability index, general to a difference of about 20 years. Life is generally imported parts of 1/2 ~ 1/3, product variety is only 1/5 abroad.

It is understood, the faults of hydraulic system in domestic road machinery parts of the total 50%~70%. Due to the sealing parts, assembly and other accelerated aging, failure cause leakage of the hydraulic system failure, accounting for about 50% of the problem; hydraulic pump, hydraulic motor and bearing short life is also more prominent; spring steel is not stable, shift pressure adjusting spring, shift position adjusting spring exist to varying degrees of change soft; host three bags during fault feedback rate statistics, supporting parts caused by fault is much higher than the number of self-made parts accounted for the number of failures.