Integral hoisting device for steel box girder

Abstract

The utility model discloses an integral hoisting device for a steel box girder, which relates to the technical field of hoisting devices and comprises a hoisting frame, a crane hoisting rope and a hoisting cross beam, the top of the hoisting frame is connected with the crane hoisting rope, and the bottom of the hoisting frame is welded with the hoisting cross beam. According to the integral hoisting device for the steel box girder, when the sliding beam moves, a hoisting rope can be driven to move, when the sliding beam moves, a connecting plate is pulled in the direction close to the sliding beam, when the connecting plate moves, the connecting plate can rotate through a rotating shaft, and when the surface of the connecting plate is parallel to the bottom of the hoisting cross beam, the hoisting cross beam is lifted. A tool can be used for positively rotating the half-threaded column, the friction force between the half-threaded column and the surface of the steel box girder can be improved through the stripe anti-skid base, and when the hoisting frame and the hoisting cross beam are placed on the surface of the steel box girder in an inclined state, the stripe anti-skid base can achieve a certain anti-skid effect, so that the hoisting frame and the hoisting cross beam are not prone to sliding; and meanwhile, the hoisting rope can be detached from the steel box girder.

Description

Technical Field

[0001] The utility model relates to the technical field of hoisting devices, in particular to an integral steel box girder hoisting device. Background Technique

[0002] The construction of road bridges is a complex and systematic process, mainly including preliminary preparation, organizational design, construction management, and specific construction steps. During the construction of road bridges, steel box girders are required. Due to their structural characteristics, steel box girders have been widely used in projects such as long-span bridges, urban overpasses, and flyovers. When the integral steel box girder is hoisted using a crane, a hoisting device is needed. However, the existing hoisting devices still have certain defects during use.

[0003] In the prior art, the hoisting device is connected below the crane hoisting rope. The hoisting rope on the hoisting device can be connected to the integral steel box girder, and then the hoisting operation is carried out by the crane. The hoisting device is usually installed at the center position of the integral steel box girder. Usually, the length of the hoisting crossbeam on the hoisting device is fixed, so that the position of the hoisting rope on the hoisting device is relatively fixed. When some steel box girders with longer dimensions are hoisted, the two ends are prone to shaking, thus affecting the hoisting operation of the integral steel box girder. Content of the Utility Model

[0004] The purpose of the utility model is to provide an integral steel box girder hoisting device to solve the problem that the existing hoisting devices in the current market are difficult to extend as mentioned in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: an integral steel box girder hoisting device, including: a hoisting frame, a crane hoisting rope, and a hoisting crossbeam. The top of the hoisting frame is connected with the crane hoisting rope, the bottom of the hoisting frame is welded with the hoisting crossbeam, a sliding beam is slidably connected inside the hoisting crossbeam, the end of the sliding beam is connected with a hoisting rope, a limiting groove is opened at the top of the sliding beam, a threaded groove is opened at the bottom of the sliding beam, limiting blocks are welded at both ends of the hoisting crossbeam, a connecting seat is welded at the bottom of the hoisting crossbeam, a rotating shaft is connected inside the connecting seat, and a connecting plate is rotatably connected to the outside of the rotating shaft, and a semi-threaded column is threadedly connected inside the connecting plate.

[0006] Preferably, a sliding structure is formed between the limiting block and the sliding beam through the limiting groove.

[0007] Preferably, the threaded grooves are evenly distributed at the bottom of the sliding beam.

[0008] Preferably, a sliding groove is opened at the bottom of the hoisting frame, a fixing block is welded at the bottom of the hoisting frame near the sliding groove, and a pin is penetrated and connected inside the fixing block.

[0009] Preferably, a slider is connected to the top of the bolt pin, and connecting rods are arranged on the outer sides of the two fixing blocks.

[0010] Preferably, bolts are in threaded connection with the outer sides of the connecting rods, a support plate is jointly welded to the bottoms of the two connecting rods, and a striped anti-slip base is connected to the bottom of the support plate.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows: for this integral hoisting device for steel box girders, when the sliding beam moves, it can drive the hoisting rope to move. While the sliding beam is moving, the connecting plate is pulled in the direction close to the sliding beam. When the connecting plate moves, it can rotate through the rotating shaft. When the surface of the connecting plate is parallel to the bottom of the hoisting cross beam, tools can be used to rotate the half-threaded column forward. The striped anti-slip base can increase the friction with the surface of the steel box girder. When the hoisting frame and the hoisting cross beam are placed on the surface of the inclined steel box girder, the striped anti-slip base can play a certain anti-slip role, making it not easy for the hoisting frame and the hoisting cross beam to slide. At the same time, the hoisting rope can be removed from the steel box girder.

[0012] 1. The hoisting device can integrally hoist various steel box girders through a crane, so as to install the steel box girders. The position of the hoisting rope on the traditional hoisting device is relatively fixed. When the hoisting device hoists some steel box girders with longer dimensions, it is easy to shake and has poor stability. When the sliding beam moves, it can drive the hoisting rope to move. While the sliding beam is moving, the connecting plate is pulled in the direction close to the sliding beam. When the connecting plate moves, it can rotate through the rotating shaft. When the surface of the connecting plate is parallel to the bottom of the hoisting cross beam, tools can be used to rotate the half-threaded column forward, so that the end of the half-threaded column can perform threaded sliding in the direction of the sliding beam, making a specified set of threaded grooves at the bottom of the sliding beam move to directly above the half-threaded column. At this time, the end of the half-threaded column can be inserted into the specified set of threaded grooves, and the half-threaded column is continuously rotated forward, so that the half-threaded column can thread-fix the sliding beam. At this time, the distance between the two hoisting ropes can be appropriately extended. By adjusting the position of the hoisting rope, the hoisting rope can be fixed in the direction of both ends of the steel box girder. At the same time, the position where the whole steel box girder is lifted can be extended, so that when the whole steel box girder with longer dimensions is hoisted by the hoisting rope, the whole steel box girder is not easy to shake, and the stability of the hoisting device during use can be improved.

[0013] 2. When the hoisting device hoists the steel box girder to the designated position, the bottom of the hoisting cross beam will be placed on the overall steel box girder, and then the lifting rope will be removed from the overall steel box girder. Due to the presence of uphill and downhill situations on the bridge, the steel box girder is placed in an inclined state, resulting in the hoisting cross beam being prone to sliding when the steel box girder is placed obliquely. When the pin moves, it can drive the slider to move. When the slider moves, it can slide through the chute. When the end of the pin penetrates through the connecting rod and the slider can no longer slide, the bolt can be rotated forward so that the end of the bolt can thread through the pin. At this time, the support plate and the striped anti-slip base can be installed under the hoisting frame. The striped anti-slip base can increase the friction with the surface of the steel box girder. When the hoisting frame and the hoisting cross beam are placed on the surface of the inclined steel box girder, the striped anti-slip base can play a certain anti-slip effect, making the hoisting frame and the hoisting cross beam not prone to sliding. At the same time, the lifting rope can be removed from the steel box girder. Brief Description of the Drawings

[0014] Figure 1 is the front view structural schematic diagram of the present utility model;

[0015] Figure 2 is the left view sectional structural schematic diagram of the hoisting cross beam of the present utility model;

[0016] Figure 3 is the front view sectional structural schematic diagram of the fixing block of the present utility model.

[0017] In the figure: 1, hoisting frame; 2, crane lifting rope; 3, hoisting cross beam; 4, sliding beam; 5, lifting rope; 6, limiting groove; 7, threaded groove; 8, limiting block; 9, connecting seat; 10, rotating shaft; 11, connecting plate; 12, semi-threaded column; 13, chute; 14, fixing block; 15, pin; 16, slider; 17, connecting rod; 18, bolt; 19, support plate; 20, striped anti-slip base. Detailed Embodiment

[0018] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0019] Please refer to Figure 1 and Figure 2It can be seen that the present utility model provides a technical solution: an integral hoisting device for a steel box girder, comprising: a hoisting frame 1, a crane hoisting rope 2 and a hoisting cross beam 3. The top of the hoisting frame 1 is connected with the crane hoisting rope 2, and the bottom of the hoisting frame 1 is welded with the hoisting cross beam 3. A sliding beam 4 is slidably connected inside the hoisting cross beam 3. The end of the sliding beam 4 is connected with a hoisting rope 5. A limiting groove 6 is formed at the top of the sliding beam 4, and a threaded groove 7 is formed at the bottom of the sliding beam 4. Limiting blocks 8 are welded at both ends of the hoisting cross beam 3, and a connecting seat 9 is welded at the bottom of the hoisting cross beam 3. A rotating shaft 10 is connected inside the connecting seat 9, and a connecting plate 11 is rotatably connected to the outside of the rotating shaft 10. A semi-threaded column 12 is threadedly connected inside the connecting plate 11. A sliding structure is formed between the limiting block 8 and the sliding beam 4 through the limiting groove 6, and the threaded grooves 7 are equally spaced at the bottom of the sliding beam 4.

[0020] During specific implementation, the hoisting device can hoist the integral steel box girder through a crane, so as to install the steel box girder. The position of the hoisting rope 5 on the traditional hoisting device is relatively fixed, resulting in the hoisting device being prone to shaking and having poor stability when hoisting some steel box girders with longer dimensions. The two groups of sliding beams 4 can be pulled away from each other according to the length of the steel box girder. When the sliding beam 4 moves, it can drive the hoisting rope 5 to move. While the sliding beam 4 moves, the limiting block 8 can slide with the sliding beam 4 through the limiting groove 6. Then, the connecting plate 11 is pulled towards the sliding beam 4. When the connecting plate 11 moves, it can rotate through the rotating shaft 10. When the surface of the connecting plate 11 is parallel to the bottom of the hoisting cross beam 3, a tool can be used to rotate the semi-threaded column 12 forward, so that the end of the semi-threaded column 12 can perform threaded sliding towards the sliding beam 4. When the end of the semi-threaded column 12 moves to the bottom of the sliding beam 4, the sliding beam 4 can be continuously pulled, so that a specified group of threaded grooves 7 at the bottom of the sliding beam 4 moves to directly above the semi-threaded column 12. At this time, the end of the semi-threaded column 12 can be inserted into the specified group of threaded grooves 7, and the semi-threaded column 12 can be continuously rotated forward, so that the semi-threaded column 12 can threadedly fix the sliding beam 4, so that the sliding beam 4 is not prone to sliding. At this time, the distance between the two groups of hoisting ropes 5 can be appropriately extended.

[0021] Refer to Figure 1 and Figure 2 It can be seen that by adjusting the position of the hoisting rope 5, the hoisting rope 5 can be fixed towards the two ends of the steel box girder, and at the same time, the position where the integral steel box girder is lifted can be extended, so that when the integral steel box girder with a longer dimension is hoisted by the hoisting rope 5, the integral steel box girder is not prone to shaking, and the stability of the hoisting device during use can be improved.

[0022] Refer to Figures 1-3It can be seen that a chute 13 is provided at the bottom of the hoisting frame 1. A fixing block 14 is welded to the bottom of the hoisting frame 1 near the chute 13. A plug pin 15 is connected through the inside of the fixing block 14. The top of the plug pin 15 is connected to a slider 16. Connecting rods 17 are arranged on the outer sides of both fixing blocks 14. A bolt 18 is threadedly connected to the outer side of the connecting rod 17. The bottoms of the two connecting rods 17 are jointly welded to a support plate 19. The bottom of the support plate 19 is connected to a striped anti-slip base 20. The plug pin 15 is in an L shape.

[0023] During specific implementation, when the hoisting device hoists the steel box girder to the designated position, the bottom of the hoisting cross beam 3 will be placed on the overall steel box girder. Then, the hoisting rope 5 is removed from the overall steel box girder. Due to the presence of uphill and downhill situations on the bridge, the steel box girder is placed in an inclined state, resulting in the hoisting cross beam 3 being prone to sliding under the inclined placement of the steel box girder, which is not conducive to fixing the hoisting rope 5. First, the two groups of connecting rods 17 can be moved to the outer sides of the fixing blocks 14, and the plug pin 15 is pushed in the direction of the connecting rod 17. When the plug pin 15 moves, it can drive the slider 16 to move. When the slider 16 moves, it can slide through the chute 13. When the end of the plug pin 15 penetrates through the connecting rod 17 and the slider 16 can no longer slide, the bolt 18 can be rotated forward so that the end of the bolt 18 can threadedly penetrate through the plug pin 15, thereby fixing the plug pin 15. At this time, the support plate 19 and the striped anti-slip base 20 can be installed below the hoisting frame 1.

[0024] Refer to Figures 1-3 It can be seen that the striped anti-slip base 20 can increase the friction with the surface of the steel box girder. When the hoisting frame 1 and the hoisting cross beam 3 are placed on the surface of the inclined steel box girder, the striped anti-slip base 20 can play a certain anti-slip effect, making the hoisting frame 1 and the hoisting cross beam 3 not prone to sliding. At the same time, the hoisting rope 5 can be removed from the steel box girder.

[0025] In summary, when using this overall hoisting device for steel box girders, the two groups of sliding beams 4 can be pulled away from each other according to the length of the steel box girder. When the sliding beam 4 moves, it can drive the hoisting rope 5 to move. By adjusting the position of the hoisting rope 5, the hoisting rope 5 can be fixed in the direction of both ends of the steel box girder. At the same time, the position where the overall steel box girder is lifted can be extended, so that when the hoisting rope 5 hoists the overall steel box girder with a longer size, the overall steel box girder is not prone to shaking, which can improve the stability during the use of the hoisting device. When the hoisting frame 1 and the hoisting cross beam 3 are placed on the surface of the inclined steel box girder, the striped anti-slip base 20 can play a certain anti-slip effect, making the hoisting frame 1 and the hoisting cross beam 3 not prone to sliding. At the same time, the hoisting rope 5 can be removed from the steel box girder. The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0026] Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A steel box girder integral lifting device, comprising: The hoisting frame (1), the crane rope (2) and the hoisting beam (3) are characterized by: The top of the hoisting frame (1) is connected to a crane rope (2), and the bottom of the hoisting frame (1) is welded with a hoisting beam (3); A sliding beam (4) is slidably connected inside the lifting beam (3), a lifting rope (5) is connected to the end of the sliding beam (4), a limiting groove (6) is provided on the top of the sliding beam (4), a threaded groove (7) is provided on the bottom of the sliding beam (4), limiting blocks (8) are welded at both ends of the lifting beam (3), a connecting seat (9) is welded at the bottom of the lifting beam (3), a rotating shaft (10) is connected inside the connecting seat (9), a connecting plate (11) is rotatably connected to the outer side of the rotating shaft (10), and a semi-threaded column (12) is threadedly connected inside the connecting plate (11).

2. The device for hoisting a steel box girder as claimed in claim 1, characterized in that: A sliding structure is formed between the limiting block (8) and the sliding beam (4) via a limiting groove (6).

3. The device for hoisting a steel box girder as claimed in claim 2, characterized in that: The thread grooves (7) are distributed at equal intervals on the bottom of the sliding beam (4).

4. The device for hoisting a steel box girder as claimed in claim 1, characterized in that: A slide groove (13) is provided at the bottom of the hanging frame (1), a fixing block (14) is welded to the bottom of the hanging frame (1) near the slide groove (13), and a latch (15) is connected to the inside of the fixing block (14).

5. The device for hoisting a steel box girder as claimed in claim 4, characterized in that: The top of the latch (15) is connected to a sliding block (16), and the outer sides of the two fixing blocks (14) are both provided with connecting rods (17).

6. The device for hoisting a steel box girder as claimed in claim 5, characterized in that: The outer side of the connecting rod (17) is threadedly connected with a bolt (18), the bottoms of the two connecting rods (17) are welded with a support plate (19), and the bottom of the support plate (19) is connected with a striped anti-skid base (20).

Images