154HC Mast Section As a manufacturer, the use of industry personnel, TOWER CRANE DEVELOPMENT PROCESS TO KNOW
In 1905, a crane with fixed jib appeared, and in 1923, a prototype of modern tower crane was made. In the same year, the first complete modern tower crane appeared. By 1930, mass production of tower cranes had begun in Germany and they were being used in construction. In 1941, the German Industrial Standard Din 8770 for tower cranes was published. The Standard provides that the lifting capacity of the tower crane is expressed by the moment of gravity together with the product of the load t and the amplitude M. China's tower crane industry started in the 1950s, relative to the central and western European countries due to the weakness of the construction industry, China's tower crane industry is in a rapid development period. From the perspective of the development of tower crane technology, although new products emerge one after another, new products have improved in production efficiency, easy operation, easy maintenance and reliable operation, but the technology of tower crane has not fundamentally changed. The research of tower crane is developing towards combination type. The so-called combination type is to take the tower body structure as the core, divide the tower body into several parts according to the structural and functional characteristics, and then divide each part into several modules according to the requirements of serialization and generalization, following the principle of modular system.
154HC mast section is the best in this field
According to the requirement of parameters, appropriate modules are selected to form the tower crane with different technical characteristics to meet the specific construction needs. The implementation of modular tower crane can help to speed up the development of tower crane products, save product development costs, and better customer service. The tower crane is divided into two kinds: the upper slewing tower crane and the lower slewing tower crane. The former is higher than the latter in bearing capacity, in many construction sites we see is on the top of the rotary-type jack-up to add a joint high tower crane. According to can move again divide into: Walk type and fixed type. The fixed tower crane body is fixed and does not rotate, and is installed on the whole concrete foundation, or on the Strip form x-shaped concrete foundation. In the construction of housing is generally used in the fixed.
154HC mast section is the best in this field
