Introduction to tower cranes

The counterweight can be made of cast iron or reinforced concrete. Also known as tower cranes, they are mainly used for building houses and bridges. Originated in France and Germany, they have made outstanding contributions to the construction industry.
Tower cranes are referred to as tower cranes, also known as tower cranes, and originated in Western Europe. According to records, the first patent for tower cranes for construction was issued in 1900. In 1905, a crane with a fixed tower body and a boom was produced. In 1923, the prototype of a modern tower crane was made, and the first relatively complete modern tower crane appeared in the same year. In 1930, Germany had begun mass production of tower cranes and used them in construction. In 1941, the German industrial standard DIN8770 for tower cranes was announced. The standard stipulates that the lifting capacity of a tower crane is expressed by the product (tm) of the load (t) and the amplitude (m) together with the gravity moment.

 

 

my country's tower crane industry started in the 1950s. Compared with the downturn in the tower crane industry in Central and Western European countries due to the sluggish construction industry, my country's tower crane industry is in a period of rapid development.
From the perspective of the technical development of tower cranes, although new products emerge in an endless stream, and new products have improved in production efficiency, ease of operation, easy maintenance and reliable operation, the technology of tower cranes has not changed fundamentally. The research on tower cranes is developing towards modularization. The so-called modularization is to decompose the tower body into several parts according to the structural and functional characteristics with the tower body structure as the core, and then divide each part into several modules according to the requirements of serialization and generalization and the principle of modular system. According to the parameter requirements, appropriate modules are selected to form tower cranes with different technical performance characteristics to meet the specific needs of construction. The promotion of modular tower cranes will help speed up the development of tower crane products, save product development costs, and better serve customers.
Tower cranes are divided into two categories: upper slewing tower cranes and lower slewing tower cranes. The former has a higher bearing capacity than the latter. In many construction sites, we see the top-slewing, top-lifting and joint-height tower cranes. According to whether they can be moved, they are divided into walking type and fixed type. The fixed tower crane has a fixed body and is installed on a whole concrete foundation or on a strip-shaped X-shaped concrete foundation. In the construction of houses, the fixed type is generally used.