Comedil Cranes San Diego

Tower Cranes Grow to New Heights

In the 1950s in the tower crane business, there were numerous significant developments in the design of these large cranes. Numerous manufacturers were started making bottom slewing cranes with a telescoping mast. These machinery dominated the construction industry for apartment block and office construction. Many of the leading tower crane manufacturers discarded the use of cantilever jib designs. In its place, they made the switch to luffing jibs and in time, using luffing jibs became the standard method.



In Europe, there were key improvements being made in the design and development of tower cranes. Often, construction locations were constricted places. Relying upon rail systems to transport a large number of tower cranes, ended up being too inconvenient and expensive. Some manufacturers were offering saddle jib cranes that had hook heights of 262 feet or 80 meters. These cranes were equipped with self-climbing mechanisms which enabled parts of mast to be inserted into the crane so that it could grow along with the structures it was building upwards.



The long jibs on these particular cranes also covered a bigger work area. All of these developments precipitated the practice of building and anchoring cranes in the lift shaft of a building. Afterwards, this is the method which became the industry standard.



The main focus on tower crane design and development from the 1960s began on covering a higher load moment, covering a larger job radius, faster erection strategies, climbing mechanisms and technology, and new control systems. Additionally, focus was spent on faster erection strategies with the most significant developments being made in the drive technology department, amongst other things.

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