1. Climb the escalator step by step in the middle of the tower.
2. Take the construction elevator from the ground floor to the scaffold erected on the last pier, then walk from the scaffold to the tower and climb the escalator of the tower.
Second, what is a tower crane:
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. 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.
However, due to the promotion of a series of favorable policies such as the national urbanization strategy, the tower crane market has been guaranteed to a certain extent, and the overall development of the industry is close to developed countries such as Europe and America. However, while tower crane technology tends to be intelligent and green and the management of tower crane enterprises tends to be international, the development of small and medium-sized tower crane enterprises in China is not optimistic. Large companies such as Xugong, Zhonglian and Sanyi have gone abroad to explore foreign markets, especially Zoomlion has become the largest tower crane enterprise in the world. Without exception, these giant enterprises have a very complete R&D, quality assurance system and operation management mechanism, and can participate in the competition of international market share. But for SMEs, there is no such opportunity. Due to the limitations of its own technology and funds, coupled with the intensification of price wars in the industry and the serious impact of payment arrears, the situation facing the whole industry is not clear.
Three, the classification of tower crane:
Tower cranes are divided into two categories: upper rotary tower cranes and lower rotary tower cranes. Among them, the former has higher bearing capacity than the latter. In many construction sites, what we see are tower cranes with top-to-top lifting and joint connection. According to whether it can move, it can be divided into walking type and fixed type. The tower body of the fixed tower crane cannot rotate, and it is installed on the whole concrete foundation or on the X-shaped concrete foundation in a strip shape. Walking can be divided into four types: crawler type, automobile type, tire type and crawler type. In housing construction, it is generally fixed. According to its luffing mode, it can be divided into two types: horizontal jib trolley luffing and jib luffing. According to its installation form, it can be divided into three types: jack-up type and integral quick disassembly type. The most widely used are downward swing, quick disassembly, crawler tower crane and jack-up tower crane with four functions (crawler, fixed, attached and internal climbing).
Four, tower crane schematic diagram: