Since the introduction of foreign tower crane technology in the 1980s, China has made great progress in tower crane manufacturing in the past 30 years, but the technical level of tower crane has not improved much. With the development of science and the progress of The Times, tower crane products will continue to improve. Forward-looking industry institute released "2018-2023 China crane industry transformation and upgrading of production and marketing demand forecasting and analysis report pointed out that the service life of tower crane and other construction machinery is usually 6 years to 10 years, a peak on the distance of construction machinery industry at present (2007-2011) for six years to 10 years, the industry has entered the renewal requirements focus release period. In the next 2-3 years, the space for renewal will continue to expand.

The change of tower crane has three trends: one is the flatting trend of medium tower crane (63t. M ~500t. M), and the moving boom trend of large tower crane (over 600t. M). Second, the technical performance of the three tower crane mechanisms will continue to improve, especially the performance of the lifting mechanism will continue to improve; Third, the application of digital technology in tower crane control system will continue to be popular.

Medium - sized tower machine flat head, large tower machine adopt moving arm. First of all, the flat head tower machine manufacturing can achieve a greater degree of modular production, can promote enterprises to improve the process equipment and production means of modernization, improve production efficiency and manufacturing accuracy, reduce production costs. Secondly, the flat head tower machine modular structure, in the installation and demolition, can minimize the tonnage of lifting equipment, installation and demolition of higher security. For the group tower operation of ultra-high buildings, the dynamic upgrading of the large tower crane is irreplaceable. The high lifting capacity of the moving boom crane makes the installation height of the tower crane relatively low, and it can minimize the occupation of the space outside the construction site.

At present, the tower crane hoisting mechanism, technical level and performance with foreign gap is larger, higher levels of the German "Flanders," rectangular LVF frequency lifting mechanism of cylindrical gear reducer, botin MC320 tower crane one word institutions, etc., but the technology behind the helicopters proportion bigger, such as botin F0 series of RCS lifting mechanism, and liebherr early PI type hoisting mechanism. Both mechanisms are 60 years old last century technology, high energy consumption, reducer life short. Therefore, it is inevitable that the technical performance of the three tower crane mechanisms, especially the hoisting mechanism, will be constantly improved.

From the two aspects of technology and use, medium and large (150t. M-500t. M) tower crane hoisting mechanism should be used straight cylindrical gear reducer, l-type layout, frequency conversion speed regulation, which will become the future trend. At present, several domestic reducer factories, such as guo MAO, boneng, jiepai manufacturers reducer, in the basic technology to meet the needs of medium-sized tower machine hoisting mechanism configuration, such as to increase the application, in objective will promote the improvement of the technical level and quality of these enterprises products.