Integral lifting sling for long vertical steel bars

Abstract

The invention discloses an integral hoisting sling for long vertical steel bars, which is used for lifting multiple steel bars at one time, and is characterized in that it includes an upper hoisting beam connected by a steel wire rope and a lower socket-type steel bar swing-proof limiting device. The hoisting beam includes splints on both sides to clamp the steel bars by bolt locking; the socket-type steel bar anti-sway limit device includes a socket-type steel bar limit seat, and the socket-type steel bar limit seat is horizontally arranged side by side. Intervals are provided with limit sockets for corresponding insertion of each hanging steel bar, and a lock plate for locking the steel bars in the limit sockets is also included, and the lock plate is fixed with the socket-type steel bar limit seat by bolts. The spreader can vertically lift multiple super-long and large-diameter steel bars in the same row at one time. Swing problems under the influence of eccentric loads.

Description

technical field [0001] The invention relates to the technical field of a vertical steel bar hanger structure, in particular to an integral hoisting hanger for a long vertical steel bar. Background technique [0002] With the development of modern bridge construction, the span and bearing capacity of bridges continue to increase, the size of substructures such as pier columns and tower columns is getting larger and larger, and the scale and weight of steel skeletons are also significantly increasing. At the same time, some complex concrete components have clear requirements for the location of steel bar joints, resulting in the frequent use of large-diameter (28-32mm) and super-long (up to 12m when unprocessed and cut off) steel bars, making the installation of steel bars more difficult and inefficient. There are roughly two traditional steel bar installation and construction technical solutions: one method is to tie the semi-finished steel bars and hoist them to the high-alt...

AI Technical Summary

Problems solved by technology

At the same time, some complex concrete components have clear requirements for the location of the steel bar joints, resulting in the frequent use of large diameter (28~32mm), super long (up to 12m when unprocessed and cut off) steel bars, increasing the difficulty and inefficiency of steel bar installation

There are roughly two traditional steel bar installation and construction technical solutions: one method is to tie the semi-finished steel bars and hoist them to the high-altitude construction platform with a crane, and then install and position them one by one manually with the crane. The disadvantage of this method is that the process takes up It takes a long time and the efficiency of the crane operation is low. It is extremely difficult to manually install a single large-diameter super-long steel bar, and the installation accuracy is difficult to guarantee; another method is to install it with a crane after the overall binding of the steel frame is completed. During the process, the steel frame is easily deformed, and a large number of auxiliary devices are required for reinforcement. It is difficult to connect the upper and lower steel frames, and the precision is difficult to control

This device only fixes the upper part of the steel bar. If the hoisted steel bar is large-diameter and super-long, no limit measures are taken at the bottom after hoisting. Under the influence of wind load and partial partial load, the bottom of the long steel bar swings randomly, which is very easy The overall stability is insufficient, there is a certain safety risk, and it may cause deformation and damage to the steel bar. Therefore, the device has certain limitations and the scope of application is small

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