CN206917297U - A kind of large-span steel girder upper air installing system in place - Google Patents

Abstract

The utility model discloses a large-span steel girder high-altitude hoisting and positioning system, which comprises a steel girder, a pole beam and a track. There are shoulder pole beams, the shoulder pole beams are arranged on the upper part of the steel beams, the shoulder pole beams are suspended from the ends of the steel beams, the shoulder pole beams are fixedly connected with the steel beams, the track is arranged at the bottom of the overhanging part of the shoulder pole beams, and the track is connected with the shoulder pole beams. The utility model adopts the pulley track to realize the high-altitude hoisting and positioning of the large-span box-shaped steel beam, the steel beam is easy to be placed, no scaffolding is required, and the concrete structure of the roof below the third floor of the podium building does not need to be unloaded, which can ensure the quality of the concrete structure and improve the quality of the concrete structure. The safety factor is improved, the construction period is shortened, and the cost is reduced.

Description

A high-altitude hoisting system for large-span steel beams

technical field

The utility model relates to a high-altitude hoisting and positioning system for large-span steel beams.

Background technique

The proportion of steel structure construction in modern large-scale buildings is increasing. Fast and efficient installation is the advantage of steel structure, and it is also one of the development trends. In the prior art, truck cranes and masts are usually used for high-altitude hoisting and installation of large-span steel beams. Truck crane: 1) Construction quality is difficult to control. 2) The construction period is long. 3) The number of segments is large, making splicing difficult on site. 4) It is necessary to build a whole house of scaffolding, and it is necessary to build a whole house of scaffolding at the third floor of the elevation to the installation position of the steel beam; hoisting of the mast: 1) The safety factor is low. 2) The stability of the pulling rod is not strong. When the steel beam is lifted at both ends of the pulling rod and falls, the left and right swings are unstable, and the steel beam is not easy to be in place. 3) Higher requirements for cable wind ropes and lifting devices. 4) The steel beam is first lifted to the track plane of the third floor by the truck crane, and then the lifting position is straightened manually or by a hoist, and the mast is lifted from the third floor to the installation position of the steel beam; this process requires unloading of the third floor.

The above deficiencies need to be covered.

Utility model content

In order to overcome the shortcomings of the existing technology, the utility model provides a high-altitude hoisting system for large-span steel beams.

The technical scheme of the utility model is as follows:

A high-altitude hoisting system for large-span steel girders, characterized in that it includes steel girders, pole beams and tracks, the tracks are set on the main body of the building, the steel girders are set between the tracks on both sides, and the The two ends of the steel beam are respectively provided with the shoulder pole beams, the shoulder pole beams are arranged on the upper part of the steel beams, the shoulder pole beams are suspended from the ends of the steel beams, and the shoulder pole beams and the steel beams Fixedly connected, the track is arranged at the bottom of the cantilevered part of the shoulder beam, and the track is connected with the shoulder beam.

As a preferred solution, the ends of the steel beams are arranged on the corbels of reinforced concrete, and the ends of the steel beams are fixedly connected to the corbels.

As a preferred solution, both sides of the track are evenly provided with pre-embedded steel bars, and the pre-embedded steel bars are fixedly connected to the track.

As a preferred solution, the upper part of the steel beam is provided with lifting lugs, the lifting lugs are fixedly connected to the steel beams, and the steel beams are connected to the cable wind ropes through the lifting lugs.

As a preferred solution, the steel girder is lifted onto the track by a crane, and the distance between the parking position of the crane and the main body of the building is greater than 1m.

As a preferred solution, each end of the steel beam is provided with two shoulder beams, and the two shoulder beams are connected by welding, and the steel beam is connected with the anchor bolts of the shoulder beams.

As a preferred solution, the steel beam is provided with lifting lugs, the lifting lugs are fixedly connected to the steel beams, and the steel beams are connected to the cable wind rope through the lifting lugs.

As a preferred solution, the steel beam is a box-shaped steel beam.

As a preferred solution, the shoulder beam is H-shaped steel.

According to the utility model of the above-mentioned scheme, its beneficial effect is that the utility model adopts the pulley track to realize the high-altitude hoisting of the large-span box-shaped steel girder in place, the steel beam is easy to be in place, and there is no need to set up scaffolding. The concrete structure does not need to be unloaded, the quality of the concrete structure can be ensured, the safety factor is improved, the construction period is shortened, and the cost is reduced.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a structural schematic diagram of the steel beam in place of the present invention.

Fig. 3 is a structural schematic diagram of the lifting lug of the present invention.

In the figure, 1. steel beam; 2. pole beam; 3. track; 4. corbel; 5. bolt; 6. lifting lug.

detailed description

Below in conjunction with accompanying drawing and embodiment the utility model is further described:

As shown in Figures 1 to 2, a high-altitude hoisting system for large-span steel beams includes a steel beam 1, a pole beam 2, and a track 3. The track 3 is set on the main body of the building, and the steel beam 1 is set on both sides of the track 3. In between, the two ends of the steel beam 1 are respectively equipped with shoulder-pole beams 2, which are arranged on the upper part of the steel beam 1, and the shoulder-pole beams 2 are suspended from the end of the steel beam 1, and the shoulder-pole beams 2 and the steel beam 1 are connected by bolts , the track 3 is arranged at the bottom of the cantilevered part of the shoulder pole beam 2, and the track 3 is connected with the shoulder pole beam 2.

Each end of the steel beam 1 is provided with two pole beams 2, and the two pole beams 2 are connected by welding, which facilitates the anchor bolt connection between the steel beam 1 and the pole beams 2, improves the overall bearing capacity of the pole beam 2, and also meets the sliding requirement.

The end of the steel beam 1 is arranged on the corbel 4 of reinforced concrete, and the end of the steel beam 1 is fixedly connected with the corbel 4 . In this embodiment, a 50t jack is used to place the steel 1 beam on the corbel 4 of reinforced concrete, and the end of the steel beam 1 and the corbel 4 are connected by anchor bolts.

Both sides of the track 3 are evenly provided with pre-embedded steel bars, and the pre-embedded steel bars are fixedly connected with the track 3 . In this embodiment, the pre-embedded steel bars are welded to the track 3; the track 4 uses P50 heavy-duty steel rails, and φ10 steel bars are evenly pre-embedded along both sides of the track 4 to weld the pressing blocks to fix the track.

As shown in FIG. 3 , the steel beam 1 is provided with lifting lugs 6 , and the lifting lugs 6 are fixedly connected with the steel beam 1 , and the steel beam 1 is connected with the cable wind rope through the lifting lugs 6 . The lifting lug 6 is used for fixing the cable wind rope during hoisting, and needs to determine the position through calculation. In this embodiment, the lifting lug 6 is connected to the steel beam 1 through an anchor bolt.

The steel girder 1 is lifted onto the track 3 by a crane, and the distance between the parking position of the crane and the main body of the building is greater than 1m. In the embodiment, the crane is a 120t truck crane.

The steel beam 1 is a box-shaped steel beam. The pole beam 2 is H-shaped steel.

A construction method for a high-altitude hoisting system for large-span steel girders, characterized in that it includes the following steps:

Step 1, making steel beam 1;

Step 2, transport steel girder 1;

Step 3, assembling the steel beam 1;

Step 4, hoisting the steel beam 1;

Step 5, steel beam 1 in place.

In Step 1, the steel beam 1 is manufactured in sections and labeled in sections.

In step 3, after the steel beam 1 is transported to the site, the steel beam 1 is hoisted by a crane to the temporarily hardened work area outside the main body of the building, the segmented steel beam 1 is assembled, and the segmented steel beam 1 is corrected. , welding the segmented steel beams 1 into a whole.

In this embodiment, the steel beam 1 is manufactured in three sections, and the three sections of steel beams are assembled and welded into a whole.

In step 4, in the hoisting area, use a crane to hoist the steel beam 1 welded on the ground as a whole. When the hoisting is raised to 500 mm, pause for 3 minutes to observe the working conditions. After confirming that there is no problem, hoist the steel beam slowly to on track.

In step 5, use the synchronous slow-speed winch for traction, and at the same time use the cable wind rope to control the middle of the steel beam 1 to prevent shaking, the steel beam 1 slides to the position of the corbel 4, and place the steel beam 1 on the corbel 4 with a jack .

The utility model adopts the pulley track to realize the high-altitude hoisting and positioning of the large-span box-shaped steel girder. The steel beam is easy to be in place, and the concrete structure of the roof below the third floor of the podium does not need to be unloaded, which can ensure the quality of the concrete structure and improve the safety factor. The construction period is shortened and the cost is reduced.

It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should belong to the protection scope of the appended claims of the present utility model.

The utility model patent has been exemplarily described above in conjunction with the accompanying drawings. Obviously, the implementation of the utility model patent is not limited by the above-mentioned methods, as long as various improvements made by the method concept and technical solutions of the utility model patent are adopted, or Directly applying the ideas and technical solutions of the utility model patent to other occasions without improvement is within the protection scope of the utility model.

Claims (9)

1. A kind of 1. large-span steel girder upper air installing system in place, it is characterised in that including girder steel, shoulder pole girder and track, the rail Road is on building body, and the girder steel is located between track described in both sides, and the both ends of the girder steel are respectively equipped with the shoulder pole Beam, the shoulder pole girder are located at the top of the girder steel, and the shoulder pole girder is encorbelmented in the end of the girder steel, the shoulder pole girder and institute State girder steel to be fixedly connected, the track is located at the bottom of the shoulder pole girder cantilever part, and the track is connected with the shoulder pole girder.
2. 2. large-span steel girder upper air installing system in place according to claim 1, it is characterised in that the end of the girder steel Above the bracket of armored concrete, the end of the girder steel is fixedly connected with the bracket.
3. 3. large-span steel girder upper air installing system in place according to claim 1, it is characterised in that the both sides of the track Embedded bar is uniformly provided with, the embedded bar is fixedly connected with the track.
4. 4. large-span steel girder upper air installing system in place according to claim 1, it is characterised in that the top of the girder steel Provided with hanger, the hanger is fixedly connected with the girder steel, and the girder steel is connected by the hanger with cable wind rope.
5. 5. large-span steel girder upper air installing system in place according to claim 1, it is characterised in that the girder steel is by hanging Machine is promoted on the track, and distance of the stand of the loop wheel machine away from the building body is more than 1m.
6. 6. large-span steel girder upper air installing system in place according to claim 1, it is characterised in that the girder steel, which is often held, to be set There are two shoulder pole girders, two shoulder pole girders are by welding in succession, the girder steel and the shoulder pole girder anchor bolts.
7. 7. large-span steel girder upper air installing system in place according to claim 1, it is characterised in that the girder steel is provided with Hanger, the hanger are fixedly connected with the girder steel, and the girder steel is connected by the hanger with cable wind rope.
8. 8. large-span steel girder upper air installing system in place according to claim 1, it is characterised in that the girder steel is box-shaped Girder steel.
9. 9. large-span steel girder upper air installing system in place according to claim 1, it is characterised in that the shoulder pole girder is H Shaped steel.