Mainly used for building houses and bridges.
Originated in France and Germany.
He has made outstanding contributions to the construction industry.
Classification of tower crane: luffing mode: 1 pitching luffing type 2. Trolley luffing, operation mode: 1 jack-up, 2 non-jack-up, rotation mode: 1 boom-down-rotation, fixed mode: 1 track, 2 jellyfish frame.
Tower crane, also known as tower crane, originated in western Europe. According to records, the first patent for tower crane for construction was issued in 1900. 1905 saw the crane with fixed tower and boom, 1923 made the prototype of modern tower crane, and the first relatively complete modern tower crane appeared in the same year. 1930, Germany has started mass production of tower cranes and used them in buildings. 194 1 year, the German industrial standard DIN8770 on tower cranes was published. According to the standard, the product (tm) of lifting weight (T) and amplitude (M) is used to express the lifting capacity of high-torque tower crane.