Sliding hoisting device and method for large steel truss in narrow space

Abstract

The invention discloses a sliding hoisting device and method for a large steel truss in a narrow space. The construction method specifically comprises the steps of temporary mounting platform erecting, pre-assembling and overall sliding hoisting, wherein pre-assembling of an inverted eave keel is conducted through a temporary mounting platform, a combined system of a hoisting device and a hoistingpulley is adopted, multi-hoisting-point binding is conducted on the inverted eave keel, a steel cable rail serves as a sliding rail, lifting pulleys serve as hoisting points and advancing tools, translation pulleys serves as direction control, construction area full-coverage multi-point-position stable control is completed, and overall lifting sliding of the inverted eave keel in the up-down direction, the front-back direction and the left-right direction is achieved; and after the inverted eave keel reaches a mounting face, position fine adjustment is conducted through a sliding device, andsplicing with a main structure is completed. According to the sliding hoisting device and method for the large steel truss in the narrow space, the number of constructors and application of large machines are fully reduced, the construction period is shortened, the construction efficiency is improved, and good economic benefits are brought.

Description

technical field [0001] The invention relates to the technical field of high-altitude steel structure installation, in particular to a sliding hoisting device and method for a large steel truss in a narrow space. Background technique [0002] At present, prefabricated steel structures and metal roofs are used for most large-scale complex buildings such as large-scale convention and exhibition centers and cultural venues. Therefore, the hoisting of roof eaves steel structure trusses will be widely involved in construction applications. For non-single building complexes, there are often construction blind spots, that is, the construction site in the middle of the adjacent building is narrow, and large tower cranes or truck cranes cannot be used. For overall hoisting, when it is not possible to use large-scale mechanical hoisting equipment to install large-scale cornice steel frames, the keel frames are usually hoisted separately, and then workers carry out high-level bulk insta...

AI Technical Summary

Problems solved by technology

Therefore, the hoisting of roof eaves steel structure trusses will be widely involved in construction applications. For non-single building complexes, there are often construction blind spots, that is, the construction site in the middle of the adjacent building is narrow, and large tower cranes or truck cranes cannot be used. For overall hoisting, when it is not possible to use large-scale mechanical hoisting equipment to install large-scale cornice steel frames, the keel frames are usually hoisted separately, and then workers carry out high-level bulk installation. A certain pressure is caused, which affects the assembly quality; on the one hand, positioning and setting out at a high position reduces the accuracy, which also affects the assembly quality; moreover, because of the inconvenience of high-altitude operations, it seriously affects the construction efficiency, prolongs the construction period, and increases the construction cost.

To sum up, traditional construction methods have a great impact on progress, quality and cost

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