Scaffold climbing and sliding system of tower crane and scaffold and standard joint of system

Abstract

The invention relates to a scaffold climbing and sliding system of a tower crane and a scaffold and standard joint of the system. The scaffold climbing and sliding system of the tower crane comprisesthe scaffold and the standard joint. The scaffold is provided with multiple supporting columns. The standard joint is provided with multiple main chords, flange plates used for being connected with adjacent standard joint are arranged at the two ends of the main chords, guide structures are arranged between the main chords and the supporting columns and comprise sliding rails arranged on the innerside walls of the supporting columns, and the sliding rails extend in the up-and-down direction; and the guide structures further comprise sliding blocks, the sliding blocks are arranged on the mainchords and used for being assembled with the guide rails in a sliding guide manner so that the standard joint can be guided to move in the up-and-down direction, the sliding rails are of angle groovestructures, each sliding rail is provided with two guide faces extending up and down, each sliding bock is provided with two supporting faces attached to the corresponding guide faces, and the two ormore sliding blocks are arranged at intervals in the up-and-down direction. The contact area is larger, limiting is stable, and structure partial extrusion stress is smaller.

Description

technical field [0001] The invention relates to the field of tower cranes, in particular to a climbing and sliding system of a tower crane cover frame, a cover frame and a standard section thereof. Background technique [0002] When the tower crane is jacked up, the guide wheels of the frame must run close to the outer surface of the main string of the standard section. The traditional guide wheels of the tower crane frame are pin shafts and guide wheels. Due to the inevitable raw material straightness error of the main string in the production process of the standard section, and the change of the unbalanced moment during the jacking process of the sleeve frame, the guide wheel sometimes touches the main string and sometimes does not. The only line contact between the guide wheel and the main string is very stressful, and even makes a loud collision sound, which poses a safety hazard. [0003] And in the Chinese invention patent document that the application number is CN20...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a climbing and sliding system for the tower crane casing to solve the problem of excessive wheel pressure in the structure of the casing guide wheel in the prior art, and the contact stress is relatively large due to the problem of line contact, resulting in potential safety hazards; The object of the present invention is also to provide a set of the climbing and sliding system of the tower crane set; also to provide a standard section of the climbing and sliding system of the tower crane set

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