The characteristics and development trends of modern cranes
With modern science and technology is developing rapidly, industrial production scale expansion and the increased automation, cranes in the modernization of the production process more widely, the growing role of the cranes require higher and higher. In particular the electronic computer technology to a wide range of applications, prompted a number of interdisciplinary approach in the advanced design and promote a modern manufacturing techniques and testing technology improved. Intense competition in the international market is also increasingly rely on technology competition. These are the technical performance of a crane to enter a new stage of development, the crane is undergoing a huge transformation.
    China is now at an unprecedented speed into the globalized international market competition, China's crane manufacturing industry faced with both opportunities and challenges of the new situation. Therefore the constant development of cranes and innovation is the key. Crane is now under the new domestic and foreign theories, new techn
ology and new trends, with examples, briefly discussed the characteristics of modern cranes and development trends.retractable
1 key products, large, high-speed, durability and exclusive
As industrial production increased scale, increasing production efficiency and production process of loading and unloading of materials handling gradually increase the proportion of the cost, to large crane or the demand for high-speed growth. From the weight of a growing, increasingly high work rate and higher energy consumption and reliability requirements. Crane has become automated production processes in an important link. Crane will not only ease of use, easy to maintain, easy to operate, and better security, fewer failures, the average working hours of trouble-free longer. Reliability is an international product market competition in the focus of many large foreign companies have developed a reliable internal control standards. China's crane to catch up with and surpass the performance of the world's advanced level, the key is to improve the reliability so that the cranes have excellent durability, trouble-free, maintenance and use of economy.
Currently the world's largest floating crane from the weight of 6500 t, the largest cranes from the weight of 3000 t, the largest bridge crane from the weight of 1200 t, automated warehouse stacking the largest crane operating speed of 240 m / min.
    Industrial production and the diversity of user needs, so that the crane for the expansion of the market, the variety has been updated to meet the special features specific to the needs of the effectiveness of the best play. Metallurgical special crane, explosion-proof, anti-corrosion, insulation and rail cranes, vessels, vehicles for increasing the functions of a crane, continuously improve performance, adaptability stronger than ever. Demag of Germany developed an aircraft maintenance for cranes in the international market opened the market. This span of the crane, lifting height, stop-high accuracy. Below the installation of a car lifting retractable rotary maintenance platform to reach any aircraft parts. With the rapid development of world nuclear power plant, the plant has been dedicated crane corresponding development, such as the indoor ring reactor bridge crane work in the radioactive environment, the pressure vessel for lifting the lid and the reactor components and other dangerous load, high reliability requirement
s, Security good, accurate positioning and can automatically slow decentralization, and other items, and various protection devices and special safety devices.
2 series modular, combination, standardization and practical
Crane is a many-volume series of products, systems using multi-objective optimization methods of the overall design has become a series of crane development priorities, through full consideration to performance, cost, technology, production management, maintenance and use of bulk manufacturing, and other factors on the main series Reasonable parameters match, so as to achieve improved performance. Lower manufacturing costs and improve the general level, with less specifications of the components of many varieties, multi-standard products to fully meet user demand.
With modular design instead of the traditional design, a crane on the basic functions of the same components, parts and components made from a variety of purposes, have the same connection elements and interchangeable modules, through a combination of different modules to form Different types and specifications of the crane. To improve the c
rane, just for a few modules. Design a new crane, just choose different modules re-combination. Since raising the general level, will enable small-batch production of products to a considerable bulk into the module production, high efficiency of specialized production and reduce manufacturing cost. Less able to form the module, a combination of many more species of crane specifications to meet market demand, increase competitiveness.
    Demag of Germany production overhead crane fully consider the combination of modular and so that the series with two, institutions, parts and components in each other's parameters match, the ability to achieve the most economical and reasonable distribution with the results. From the use of weight lifting and speed of the product is a constant way to or from the main body parts to achieve the maximum common. Then the rate changes through the pulley derived more specifications. 5 ~ 125t bridge crane series, a variety of working-level, just four kinds of car-lifting. The company developed the standard wheel box module series, have above-connected group, optional different models of the drive unit can be assembled into vehicles, and pieces of metal structures u
sed for various combinations after the bridge, gantry crane , Lane Stacker cranes or other lifting transport-rail line running the mechanical machinery, its wheels are a variety of forms for the Selection of tread. Because of distance without restrictions, combined flexible, widely used. The company's standard-beam module series has commercialization, with the main beam by friction between the ring and high strength bolts of connections and improve the accuracy of interchangeability and size, a decrease of Jie Hemian the processing volume. And one of the main beam can be quickly and effectively phase grounding. That apply to single-beam or two forms of dual-beam-beam modules, according to the weight from the span can be identified and applied-beam models.

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