The development of automobile crane industry in China
China's truck cranes were born in the 70s of last century. After nearly 30 years of development, there were 3 major technological improvements during the past 3 years, namely, the introduction of Soviet technology in 70s, the introduction of Japanese technology in 80s, and the introduction of German technology in 90s. But overall, the car crane industry China always walk the road of independent innovation, with the development of their own clear, especially in recent years, the automobile crane industry Chinese has made considerable progress, although compared with foreign countries there is still a certain gap, but the gap is gradually narrowing. In addition, the performance of China's small tonnage truck cranes is well enough to meet the requirements of actual production. In the near future, the automobile crane industry in China will develop into a mature and mature industry with high market level.
Many experts believe that the rapid development of the market is the favorable basis and environment for various manufacturers of the automobile crane industry in China. In recent years, Chinese automobile crane industry in addition to a company with Japan crane brand manufacturers joint venture outside, other manufacturers has been catching up with foreign advanced level in the process of technological innovation, always adhere to the road of independent, there is no overall introduction of foreign technology practice basically, also make the Chinese automobile crane industry in the international reach and close the advanced level at the same time, there are obvious China traits in product technology.
The PLC programmable integrated control technology has been widely used in China's truck cranes. The control and actuating components such as hydraulic valve blocks, hydraulic motors and oil pumps with bus interfaces have been relatively mature, and hydraulic and electrical appliances have been combined closely. The adjustment of control performance can be realized by software, the control system can be simplified greatly, the hydraulic components can be reduced, the stability of the system can be improved, and the ability of automatic fault diagnosis and remote control can be realized.
At present, the operation mode of lifting operation in China's new generation of truck cranes, large area application pilot proportional control, has fine fine-tuning performance and fine control performance, little operation and no fatigue. Through the pilot proportional handle, the stepless speed regulation of multiple loads is achieved by proportional handling, which effectively prevents the two slide phenomenon during lifting operation, and greatly improves the safety, reliability and operation efficiency of lifting operation.
Some large truck crane was used on the telescopic expansion technique of single cylinder bolt, pin by hydraulic, hydraulic cylinder can be completed by a single multi section arm movement, degree of control and automatic expansion and achieve various conditions, changes in the past can not add rope cylinder internal operation, the crane is relatively lighter. Expand the crane to a higher level of development work space.
In the international market in the process, Chinese automobile crane industry increased rapidly in recent years, the level of quality, also has been highly recognized international users, because the product specification, high professional quality of users, the quality of export products in the domestic feedback ratio was reduced significantly, reflecting the better products. This has laid a good foundation for the development of the automobile crane industry in China.
