Elastic statically indeterminate lifting system for large prefabricated part

Abstract

The invention discloses an elastic statically indeterminate lifting system for a large prefabricated part in the technical field of constructional engineering. The elastic statically indeterminate lifting system for the large prefabricated part comprises a lifting member, lifting noses are arranged at four included angles of the top of the lifting member; universal hinges are arranged at the top of the lifting member; the top of the lifting member is connected with elastic lifting ropes through the lifting noses; the tops of the elastic lifting ropes are connected with rigid lifting ropes; thetops of the rigid lifting ropes are connected with lifting hooks; the outer walls of the lifting hooks are connected with cranes through the lifting ropes; the tops of the universal hinges are connected with supporting columns; and the tops of the supporting columns are connected with a horizontal limiting frame. The problem that the lifting displacement coordination can not be realized by fullysteel lifting ropes in existing statically indeterminate lifting operation is solved, so that the hoisting forces output by the cranes are ensured to be close to each other, and all the elastic lifting ropes below the cranes are ensured to be still in the vertical direction, the safety of the lifting member is effectively protected, and the problem that the distances of the multiple cranes are difficult to keep consistent during horizontal linkage is solved.

Description

technical field [0001] The invention relates to the technical field of construction engineering, in particular to a large-scale prefabricated component elastic hyperstatic lifting system. Background technique [0002] In recent years, with the continuous improvement of people's requirements for living conditions and living environment, the construction industry has developed rapidly. However, the development of the construction industry has caused serious resource consumption and environmental pollution, forcing people to seek a new way out of the construction industry. At present, the industrialization of buildings characterized by prefabricated buildings is one of the key ways to achieve low-carbon and sustainable development in the construction industry. [0003] In prefabricated buildings, the hoisting of prefabricated components is a crucial link, and the safety and efficiency of hoisting are particularly important factors in the hoisting link. At present, with the co...

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Problems solved by technology

For super-statically determined lifting operations, there must be several redundant lifting points. If all lifting points are to work together and share the lifting weight evenly, it is necessary for each lifting rope to have sufficient deformation capacity to achieve displacement coordination. However, the current lifting operation Steel wire ropes are mainly used in the sling. The tensile stiffness of this kind of sling is very large when it is working, and it can be considered as a steel sling. Such a sling cannot realize the displacement coordination in the lifting. The basic number of lifting points required for static determination is mainly used, while the redundant lifting points basically do not work, resulting in a mismatch between the force of the hoisting and the design force, which may lead to overloading of the crane and damage to components

[0006] On the other hand, in the existing joint hoisting operation of multiple cranes, it is difficult to keep the spacing control of multiple cranes consistent when they are horizontally linked, so that it is difficult to maintain the vertical parallel orientation between the lifting ropes. An included angle is formed between the lifting directions, which makes the component bear the horizontal component force, which causes the component to crack or even fail

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