Concrete Pump Technology Trends And Market Analysis - Concrete Pump, Concrete Machinery -

Of this article: Bosch Rexroth Hydraulics and Automation Co.

, Ltd. Jiang Guoyao

My 70s from the 20th century began to explore the development of concrete pump, 80 the introduction of technology has begun to manufacture concrete pump, but the real concrete pump manufacturers should be made in 1993 Zoomlion The predecessor of Union inception. After 20 years of development, China has become the world's largest producer of concrete pumps. Truck sales in 2007 of about 3000, Movable pumps, distributed About 6,500. The same period, total foreign concrete pump is only about 12,000 units.

Although China concrete pump had initially introduced the technology in Japan, but the real success is to draw on European technology products self-developed. The key example in the hydraulic system, and hydraulic Excavator Introduction of technology had to go?? Blind localization and failure of the road is different from the start of concrete pump hydraulic components with outstanding foreign. Advantages: (1) product standpoint high; (2) with foreign experts, business and technical exchanges, learn the most advanced technology and ideas. 90 20th century concrete pump companies have been flourishing in China, emerging through a variety of hydraulic system, some of which are unique and innovative. For example, Chinese manufacturers have developed speed 3000r/min originality of A4V56 pump hydraulic system. At that time the mainstream of foreign manufacturers open systems is A7VO or A8VO inclined shaft pumps and special hydraulic valve, a large number of Chinese manufacturers are using large displacement swashplate pump A11VO190/260 and industrial valves. In addition, Chinese manufacturers in the global development of the three with the first concrete pump, dual power pump, and the first to use PLC control pump displacement.

Currently Sany Heavy Industry , Represented by Zoomlion produced by the manufacturer of the concrete pump has reached a relatively high level, many of the concrete pump manufacturers, there are still serious product homogeneity, less technological innovation, price competition and other issues . China concrete pump has been the world, China's other export products because of IP issues in the international arena, "unfair" treatment, which should attract the attention of domestic manufacturers. Innovation is the source of life, concrete pump technology innovation make great accomplishments. In addition, China should be seen Concrete Machinery After ten years of rapid development, is still very optimistic about future prospects, this is for our further development of concrete pump technology to provide a big stage.

1 Technology Development In the future, concrete pump is the main direction of development: to improve host performance and operational efficiency, lower utility costs, improve comfort and adapt to regulatory requirements.

1.1 main hydraulic system Currently the main pump hydraulic system 3. One is full of hydraulic fluid to the control signal for, electronic control pump displacement adjusting the open loop system, mainly used by Sany; the second is represented by Zoomlion electrical signal for the liquid-controlled oil pump emissions regulation open system, almost become the standard configuration most of Concrete Pump. Most hydraulic systems are dual-circuit system, that is, pumping and oscillating circuit by the main pump and constant pressure pump (or Gear Pump ) Oil. The third system is a closed system. Closed system, but for the impact of the higher cost of small, now mainly used in the pump, in the movable pumps, distributed basically have been eliminated. Open loop system can also work out the impact of small system, such as Sany developed. However, some other manufacturers, instead of spending a few years of the system, as the direct use of sophisticated closed-system occupy the market quickly. This is why most manufacturers of domestic pump with closed system reasons. Thanks PLC pump displacement control with easy to adjust the advantages of low cost, open after the regular pump displacement control system will be used in all power ratio adjustment, that the traditional control method will be LRDU2 LRDH2 replaced.

(1) limit load adjustment and automatic power distribution.

Widely used at home and abroad constant power pump system has a major flaw, it is only the main pump to constant power control.

by: gaga

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