China's car cranes were born in the 10th century. After nearly 30 years of development, there have been three major technological improvements during the period. They introduced Soviet technology in the 1970s, Japanese technology in the 1980s, and introduction in the 1990s. German technology. But overall, China's automotive crane industry has always been on the road of independent innovation, with its own clear development, especially in recent years, China's automotive crane industry has made great progress, although compared with foreign countries There is a certain gap, but this gap is gradually narrowing. Moreover, the performance of China's current small and medium-sized truck cranes is already intact, which can meet the requirements of real production. In the near future, China's automotive crane industry will develop into a mature industry with stable development and high marketization.
Many experts believe that the fast-growing market is a favorable technological innovation base and environment for various manufacturers of the Chinese automotive crane industry. In recent years, in addition to a joint venture between a small company and a Japanese crane brand manufacturer, the Chinese auto crane industry has been pursuing independent technological advancement in the process of catching up with foreign advanced standards. Basically, there is no overall introduction of foreign technology. The practice also makes the Chinese automotive crane industry achieve significant and close to the international advanced level, while having obvious Chinese characteristics in product technology.
Chinese automotive cranes have used PLC programmable integrated control technology extensively. Hydraulic valve blocks with hydraulic ports, hydraulic motors, oil pumps and other control and actuator components have been relatively mature, and hydraulic and electrical appliances have achieved a close integration. The control performance can be adjusted through software, the control system is greatly simplified, the hydraulic components are reduced, the stability of the system is improved, and the ability to realize automatic fault diagnosis and remote control is provided.
At present, China's new generation of truck crane products, lifting operation mode, large-area application pilot proportional control, with good fine-tuning performance and fine control performance, small operating force, not easy to fatigue. Through the pilot proportional handle, the stepless speed regulation of proportional load conveying is realized, which effectively prevents the secondary falling phenomenon during the lifting operation, and greatly improves the safety, reliability and working efficiency of the lifting operation.
Some large-scale truck cranes also use the telescopic technology of the single-cylinder bolt on the telescopic arm. Through the action of the hydraulic pin, the movement of the multi-section boom can be completed with a single hydraulic cylinder, and the degree of control and automatic expansion and contraction of various working conditions can be achieved. It has changed the way of working without the oil cylinder and the internal rope row in the past, making the crane relatively lighter and expanding the space for the crane to develop to a higher working height.
In the process of going to the international market, the rapid improvement of the quality of China's automotive crane industry in recent years has also been highly recognized by the international (3) support. Due to the standard of product use, the professional quality of users is higher, and the quality feedback of export products is higher. There has been a significant reduction in the past and the product has been well reflected. This has laid a good foundation for the development of China's automotive crane industry.
UPVC JIS K-6739 Drainage Fitting
Drainage Tee,Jis Drainage Tee Blue,Upvc Drainage Tee Blue,Upvc Jis Drainage Fittings
Zhejiang Huangyan Minghua Plastic Pipe Fitting CO.,LTD , https://www.pipefitting-mh.com