CN111794120A - A device for installing steel bars in a bridge tower thin-walled box-shaped structure - Google Patents

Abstract

The invention discloses a device for installing steel bars in a thin-walled box-shaped structure of a bridge tower. Equal to the diameter of the steel bar to be hung, concentric snap rings are arranged at both ends of the bottom plate of the hoisting frame body, and a stop bar that can be flexibly taken out is arranged in the snap ring. The ends are also provided with rings respectively. The device has a simple structure, is convenient and practical, can hoist multiple steel bars at one time, and can directly install the steel bars at the installation position, which avoids the bending of the steel bars during the hoisting process, reduces the secondary straightening process, and simplifies the installation process. Improve work efficiency.

Description

A device for installing steel bars in a bridge tower thin-walled box-shaped structure

technical field

The invention belongs to the technical field of viaduct construction, and in particular relates to a device for installing steel bars in a thin-walled box-shaped structure of a bridge tower.

Background technique

At present, there are more and more long-span bridges in China, and the height of the bridge tower is also getting higher and higher. In order to reduce the amount of reinforced concrete, reduce the construction cost, and reduce the weight and settlement of the bridge tower, most of the bridge towers are designed as bridge tower thin-walled boxes. reinforced concrete structure, in which the installation and construction of the vertical main reinforcement is an essential process. The installation and construction of the vertical main reinforcement includes the hoisting and connection construction of the steel bar. At present, the traditional steel bar hoisting is mostly carried out by the tower crane. The two-point type is used to directly lift the bundles of steel bars to the worker's operating platform, and then manually erect the steel bars one by one for straightening. Threaded socket connection. In the above-mentioned traditional construction process, there are the following shortcomings.

1. It is troublesome. After the bundles of steel bars are lifted by the tower crane to the worker's operating platform, at least 2-3 workers are required for the construction of the straight-threaded sleeve connection of a main bar, 1-2 workers straighten the main bar, and one worker tightens the straight-threaded sleeve. .

2. Laborious. Usually, a steel bar has a diameter of 1-3 cm, a length of 3-4 meters, and a weight of about 20 kg. It is laborious for workers to carry it manually on the operating platform.

3. Poor security. When the tower crane carries out two-point bundled hoisting, the steel bars may fall and the steel bars are easy to bend due to the influence of gravity. This method is less safe during the transfer and transportation, and the steel bars placed on the operating platform also have the safety hazard of falling objects.

SUMMARY OF THE INVENTION

In order to overcome the deficiencies in the prior art, the present invention provides a device for installing steel bars in a thin-walled box-shaped structure of a bridge tower.

The invention is realized through the following technical solutions: a device for installing steel bars in a thin-walled box-shaped structure of a bridge tower, comprising a hoisting frame body, the hoisting frame body is an angle steel, and a plurality of clamping grooves are arranged side by side on the bottom plate of the hoisting frame body , the width of the clamping slot is greater than or equal to the diameter of the hanging steel bar, the two ends of the bottom plate of the hoisting frame body are respectively provided with concentric retaining rings, and the retaining rods that can be flexibly taken out are provided in the retaining rings, and the retaining rods are blocked at the slot position of the clamping groove. The two ends of the hoisting frame body are also respectively provided with hoisting rings.

In the above solution, the vertical plates at both ends of the hoisting frame body are provided with circular holes, and the circular holes are respectively provided with lifting rings.

In the above solution, one end of the blocking rod is bent, and the other end is provided with a transverse through hole, and a plug is inserted into the through hole.

In the above solution, the hoisting frame body is provided with a threaded sleeve adapted to the thread at the end of the steel bar to be hung, and the outer diameter of the threaded sleeve is larger than the groove width of the clamping groove.

Compared with the prior art, a device for installing steel bars in a bridge tower thin-walled box structure of the present invention has the following beneficial effects:

1. The device is simple in structure, convenient and practical. Multiple steel bars can be hoisted at one time without stacking the steel bars on the operating platform, and only one worker needs to connect the straight thread sleeves when installing the steel bars;

2. It improves the safety of hoisting steel bar construction, saves the operating area of the operating platform, and provides more spacious working space for the builders.

3. It avoids the bending of steel bars during the hoisting process and reduces the process of secondary straightening.

Description of drawings

FIG. 1 is a schematic structural diagram of a device for installing steel bars in a thin-walled box-shaped structure of a bridge tower according to the present invention.

In the picture: 1. Hoisting frame body, 2. Hanging rope, 3. Hoisting round hole, 4. Snap ring, 5. Barrier, 6. Snap groove, 7. Thread sleeve, 8. Steel bar, 9. Latch pin, 10. rings.

Detailed ways

Below in conjunction with the accompanying drawings and specific embodiments, a device for the installation of steel bars in a bridge tower thin-walled box structure of the present invention will be further described:

FIG. 1 is a schematic structural diagram of a device for installing steel bars in a thin-walled box-shaped structure of a bridge tower according to the present invention. In the figure, the device for installing steel bars in a thin-walled box-shaped structure of a bridge tower includes a hoisting frame body 1. The hoisting frame body 1 is made of angle steel to increase the rigidity of the device. The bottom plate of the hoisting frame body 1 is arranged side by side with a plurality of The clamping groove 6, the width of the clamping groove 6 is greater than or equal to the diameter of the hanging steel bar 8, the upper end faces of the two ends of the bottom plate of the hoisting frame body 1 are respectively provided with concentric retaining rings 4, and the retaining rods 5 that can be flexibly taken out are provided in the retaining ring 4 , the blocking rod 5 is blocked at the notch position of the card slot 6 , the vertical plates at both ends of the hoisting frame body 1 are provided with hoisting circular holes 3 , and the hoisting circular holes 3 are respectively provided with hoisting rings 10 . One end of the blocking rod 5 is bent, and the other end is provided with a transverse through hole, and a plug 9 is inserted into the through hole to prevent the blocking rod 5 from slipping out of the snap ring 4 .

Both ends of the hoisted steel bar 2 are threaded. Insert the steel bar upright into the slot 6, and screw it on the thread with a threaded sleeve 7 to prevent the steel bar from falling out of the slot. Put it into the snap ring 4 and lock it with the latch 9 to prevent the steel bar from slipping out of the card slot, and hook the hoisting round hole 3 with the sling 2 to quickly hoist the steel bar to the operating platform.

The device for installing steel bars in a thin-walled box-shaped structure of a bridge tower has a simple structure, is convenient and practical, can hoist multiple steel bars at one time, and can directly install the steel bars at the installation position, thereby avoiding the bending of the steel bars during the hoisting process, reducing the The secondary straightening process is simplified, the installation process is simplified, and the operation efficiency is improved.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention in any form. Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. The technical personnel, without departing from the scope of the technical solution of the present invention, can make some changes or modifications by using the methods and technical contents disclosed above to be equivalent embodiments of equivalent changes, provided that they do not depart from the content of the technical solutions of the present invention, Any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention still fall within the scope of the technical solutions of the present invention.

Claims (4)

1. a device for the installation of thin-walled box-shaped structural steel bars of a bridge tower, comprising a hoisting frame body, it is characterized in that: the hoisting frame body is an angle steel, and the bottom plate of the hoisting frame body is The width of the slot is greater than or equal to the diameter of the steel bar to be hung. Concentric snap rings are arranged at both ends of the bottom plate of the hoisting frame. The snap ring is provided with a stopper that can be flexibly taken out. Two ends of the frame body are also respectively provided with lifting rings. 2 . A device for installing steel bars in a bridge tower thin-walled box structure according to claim 1 , wherein the vertical plates at both ends of the hoisting frame are provided with circular holes, and the circular holes are respectively provided with circular holes. 3 . There are rings. 3. A device for installing steel bars in a thin-walled box-shaped structure of a bridge tower according to claim 1, wherein one end of the blocking rod is bent, and the other end is provided with a transverse through hole, and a plug is inserted into the through hole . 4 . A device for installing steel bars in a bridge tower thin-walled box structure according to claim 1 , wherein the hoisting frame body is provided with a threaded sleeve adapted to the thread at the end of the steel bar to be hung, 5 . The outer diameter of the threaded sleeve is larger than the slot width of the card slot.

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