Despite a long history of our country’s housing construction, but the building materials production and supply of products still remain in the concept of the production and supply of raw materials, fewer species, not complete, but also lower the rate of construction machinery and equipment, which directly led to the building into high, a long construction period and the construction of the adverse consequences of low efficiency. However, such a situation the same time as the construction machinery industry, development of a larger space. Construction machinery products from China’s production could be an overview of the development of China’s construction machinery overall situation.
1, China’s production of construction machinery products
(A) Concrete products machinery
1. Block forming machine. Masonry is the largest housing construction used in building materials, however, the production of solid clay brick Huitian serious, for our country that a serious shortage of arable land in the country, the problem is very serious. To this end, countries have repeated orders to prohibit Hui Tian, and efforts to increase year after year, many cities have prohibited the use of solid clay brick. At the same time, the use of fly ash and other industrial waste production block of the manufacturers, the implementation of income tax relief to encourage policies, and to block production of accelerated development. The production of key equipment is the block block molding machine. The international community block forming machine production to the United States, Germany, Japan, represented by their fill masonry block forming machine can produce, decorative masonry, splitting masonry, floor tile and other masonry, and these masonry Compared with the solid clay brick, strength higher (up to 25Mpa above) in the “Ninth Five Year Plan” period, supported by the State Planning Commission, specialized research project, in August 2006 completed the QM4-12 block forming mold oscillator strength Machine’s R & D and production.
2. Hollow wall extrusion production lines. The hollow wall extrusion production line is a large amount of fly ash and other industrial wastes produced using sets of wallboard production line, this production line out of the hollow wall panels, used in partition walls, not only light weight, easy installation, and the separated sound insulation performance is also very good. The United States, Germany, Japan and other countries use is widespread. Domestic first hollow-wall extrusion production line put into operation in Tianjin in 2007, not before the commissioning of a large number of hollow wall be imported from Japan.
(B) the reinforcement processing machinery
At present, China’s steel processing machinery in the steel mesh automatic production line, automatic bending hoop steel production line, steel rib peeling rolling straight screw connection device are all developing rapidly, only automatic production line of steel mesh that is a significant one cases.
Steel mesh is typical of the construction steel parts, and steel banding compared to good quality, saving of steel, construction speed and so on. Production of the core of steel wire mesh device is automatic welding production lines. Although China has just started, but from the high momentum Meng, has reached the international advanced level of similar products, and critical mechanical, electrical and pneumatic components still imported from abroad.
(C) fitting machine
In all construction projects, with the improvement of living standards for environmental requirements, and the fitting accounts for increasing share of the whole project, is now generally reaches 40% ~ 50%. Decorated main pumping mechanical spraying equipment, paint spraying pump, height work baskets, construction window cleaning machines.
On the pumping equipment, spraying, due to the current civil commonly used hand-plastering, their workload or about the building about 30% of the total labor; in duration, the decoration of the total project duration of about 50% ~ 70%, occupied by more than labor, machinery and construction is the lowest level, vulnerability to the impact of the labor force, building construction is still the weakest link. National “Ninth Five-Year” key scientific and technological project UB8.0 sand pump, can complete the delivery of mortar, spraying operations can also be used for various paste materials, horizontal and vertical transport, spraying good effect, strong adhesion, high efficiency, in particular, suitable for slope protection, the terminal backfill, stone and other construction grouting.
(D) lifting machinery
1. Tower crane. The 20th century, mid-and late 80s now, is the tower crane boom period of development. More than 20 years, through the mapping, copying, design innovation and technology imports, making the tower crane business in the design and manufacturing technology, business management and marketing, etc. to form a more complete system. More than 300 manufacturers across the country in achieving more than 230 production licenses will have an annual output has exceeded 1 million units, but the product mix extremely unreasonable tens of thousands of units of the product model no more than 30 species, and the vast majority of very much the same. This is one of the important reason is that 80s of last century the state has adopted a product type classification standards, the original purpose is to guide manufacturers planning products, and guide the development of domestic infrastructure supporting components, which although easy to unified management, but it affects the tower crane technological advances. In developed countries, tower crane Model is very large, as small as 1 ton of rice, as large as 5,000 tons of rice, what is to engage in what the market needs. While we are in the “same model” on the repeated much the same work, the result can only be in the market, severely beaten.
Such as tower crane production, developed countries have developed to achieve full operational status monitoring and fault diagnosis of parameters of the intelligent intelligent tower machine, and has begun mass production, while China is still a blank. Therefore, for the construction machinery industry, but also with a pioneering spirit, we must dare to take risks, to try to research and development.
2. Construction lifts. Construction hoist is a high-level, super-high-rise building construction are essential equipment. Problems with the tower crane basically the same. The main reason is still the variety and performance issues. At present, China’s production of lift no more than 10 varieties of species, more than 90% is 1 or 2 tons of products, in the fierce market competition, focus on the use of “weapons” is down. Enterprises can not succeed, one must rely on technological innovation.
Second, conditions for innovation is the inevitable development of China’s construction machinery
According to the relevant departments of the forecast, by 2010, construction machinery output value will exceed 100 billion yuan, but how the how to develop, the situation is much more complex. The development path of China’s construction machinery There are basically three types: First, the introduction of a joint venture; 2 is the introduction of digestion innovation; 3 is a reference to international advanced experience, self-development and innovation. Self-development, innovation is not a simple imitation of someone else’s product, but must be developed with independent intellectual property products. Therefore, it is necessary to establish and perfect an independent R & D system and improve product design and manufacturing standards, so as to win customers favor a firm market.
Enterprise is to develop innovative subjects, and now many companies are transformed from original scientific research institutes, and “turn” was very successful. After conversion, design standards and manufacturing levels have improved significantly, not only to keep our own market, but also allows us to go abroad to the international market to become a reality. There are many examples in this regard, such as concrete pump, before the foreign products accounted for most of our markets, we introduced after the digestion, absorption, innovation, superior to imported products on the applicability of the. In the second development, the China has its own characteristics, its own national conditions, therefore, be engaged in development projects for the situation. If the introduction of new technology is not targeted at secondary conditions develop, can not solve the applicability of the question, who would not be so “Miss pump”! In October 2005, the U.S. Pioneer’s boarding ladder out of the dead accident in the Three Gorges, the Three Gorges also use our own boarding ladder, live well as the international brands ALIMAK boarding ladder, less than two years, transmission, and safety devices are bad, we did several problems. This is one of the major reasons is that they do not understand our national conditions, they do not know the quality of our management and staff. Therefore, the second development focus to resolve the question of applicability. The Three Gorges mixing purchased a total failure in Japan, the Japanese experts, a headache, the original is China’s power grid voltage instability caused by the trip or the Chinese experts, plus a voltage regulator all resolved. These examples illustrate the importance of the development and innovation, and the development must be innovative, to solve practical problems.
In short, since the reform and opening up to now, China’s construction machinery industry, a great performance. In particular, the tower crane production, has basically met the needs of building, and some of their products into the international market. Will have independent intellectual property rights of products with the best matching with the international parts, to build our own brand and with our low-cost advantage, to keep our own markets, proved entirely feasible.