Advantages and disadvantages of the hottest Chines

Advantages and disadvantages of Chinese machinery

CONEXPO con/agg2005 in Las Vegas has come to an end, which is the largest exhibition of China's construction machinery industry. However, the whole exhibition is smaller than Bauma exhibition in Munich, Germany last year in terms of venue and scale, and shows regional characteristics. Some analysts believe that this is mainly because the United States, for security reasons, has refused visas to exhibition groups and visitors from relevant countries

the "Oscar" of the construction machinery industry

Las Vegas Construction Machinery Expo, together with Bauma in Germany and rntermat in France, is called the three major exhibitions of the industry. It is jointly sponsored by the American Equipment Manufacturers Association (AEM), the American Commercial Concrete Association and the American aggregate Association. It is held every three years, mainly to show the most advanced products, technologies and services in the industry, and is known as the "Oscar" of the construction machinery industry

this Expo has "more than 2300 construction machinery manufacturing enterprises from around the world, including famous international brands of construction machinery and many small and medium-sized host and supporting enterprises, which have brought brand-new equipment, technology and ideas

according to statistics, there are 33 domestic enterprises organized by China Construction Machinery Industry Association and China Council for the promotion of electromechanical trade, with a total exhibition area of 3000 square meters. Among them, XCMG showed four products: QY65K truck crane, cv100 vibratory roller, ZL50G loader and ZL30G loader, reflecting XCMG's main product lines and export main models

Liugong exhibited 8-ton and 5-ton loaders and excavators; Sany Heavy Industry exhibited concrete pump trucks, towing pumps and bulldozers; Tiangong heyday exhibited graders and mechanically driven rollers; Yuchai exhibited a variety of small excavators, two busy and other products. Many domestic enterprises also exhibited hydraulic parts, seats, instruments, wear-resistant materials and various tools

earth moving equipment is still a landmark product

the Expo gathered international first-class engineering and construction machinery manufacturers with innovative 3D printing, such as Caterpillar, Liebherr, Komatsu, Volvo, Hitachi construction machinery, Terex, John Deere, BOMAG, Dynapac, Ingersoll Rand, wittgens, etc., as well as parts manufacturers such as Cummins, Deutz, ZF, Dana, sauer/dan-foss, Lishile, etc. It is understood that the products of these companies are developing towards large-scale and intelligent, and are constantly improving and upgrading, with more perfect functions, and pay more attention to appearance modeling, ergonomics and special purposes

from the exhibits, earth moving equipment, including excavators (including small excavators) and loaders, is still a landmark product

an industry expert told after visiting the exhibition: "The world's first-class construction machinery manufacturers and parts manufacturers have brought the latest advanced equipment and basic parts. The number of exhibits, the rich variety and the excellent production are amazing. But on the whole, earth moving equipment is still the mainstream product.

at the exhibition, many enterprises showed advanced control technology, such as the use of electronic control speed change, steering, automatic electronic fault diagnosis and monitoring technology in construction machinery to start Electromechanical injection reduces fuel consumption, reduces the harmful substances of engine exhaust gas, and protects the environment. New materials and technologies continue to appear and are widely used. For example, engineering plastics are used to replace steel plates, which greatly reduces the cost, and new coating materials and processes are used to improve the appearance quality. Operation control technology and electronic technology are at the leading level

large companies represented by Carter moved the computer technical support system to the booth as a highlight for display. The system can carry out real-time monitoring of sold equipment, including fault mode detection, equipment operation monitoring, headquarters help for major faults, etc., which added icing on the cake, and the resistivity of graphene is smaller than that of silver; It is transparent and airtight... Various characteristics make the future use of graphene in touch screens, sensors, batteries and many other fields full of imagination, reflecting the strength of large companies. "

advantages and disadvantages of Chinese products

during the exhibition, the trade negotiation and technical exchange of the Chinese exhibition group were very active, and the exhibitors gained a lot, and many products reached sales intentions. For example, the four products exhibited by XCMG group were all sold at the end of the exhibition, among which 16 cv100d vibratory rollers were ordered by American customers.

the expert analyzed that the products exhibited in China this time were more comprehensive than those in the same industry in China The performance, appearance and control system can be said to be in a leading position. Compared with similar foreign products, they are relatively close in both performance and appearance, and the control system and function are basically at the same level. For example, intensus, XCMG's U.S. dealer, was delighted with XCMG's breakthrough in booth layout and recognized the technological progress of products, especially that the appearance design, appearance quality and manufacturing process of truck crane and loader products have approached or reached the international market level

however, the reliability of Chinese products is much lower than that of foreign advanced level. Among China's export products, the most important thing for foreign parties is the reliability of converting the saline wastewater generated by polycarbonate plant into reused brine. In addition, the gap between domestic products and foreign products is also reflected in the design details. Domestic products are similar to foreign products in terms of supporting parts and structures, but there is a big gap with foreign products. In addition to the gap in structural technology, Chinese enterprises have not considered the details of design comprehensively

for example, in terms of product maintenance, foreign products can see convenient devices where they need to be overhauled up and down, and the engine hood can be fully opened to fully expose the engine and hydraulic pump for maintenance. In terms of product safety design, the product warning signs are complete. You can understand the precautions without reading the instructions. For example, a manual pump equipped with an emergency opening brake on the machine by vibromax is pasted with a warning sign to inform the user under what circumstances and how to use the manual pump

the problem of heat balance is a worldwide problem. Improving the design of heat dissipation system is the feature of this exhibition. Caterpillar loaders, johndeer loaders and Volvo loaders all use independent heat dissipation systems. With the increasing requirements of environmental protection for engines, independent cooling systems have been widely used in loaders, graders, excavators and other equipment. International multinational companies have taken this as a major publicity point, representing a development trend, which should be highly valued by Chinese enterprises and should be studied as soon as possible