Quick mounting structure for cantilever section of steel box girder

By setting up fixing mechanisms on both sides of the steel box girder, rapid installation and welding of the steel structure cantilever segments are achieved, which solves the problem of continuous use of the crane and improves the efficiency of the crane.

CN222499947UActive Publication Date: 2025-02-18CHINA TIESIJU CIVIL ENGINEERING GROUP CO LTD +1
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Patent Information

Application Number
CN202421072869.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-05-16
Publication Date
2025-02-18
Estimated Expiration
2034-05-16

AI Technical Summary

Technical Problem

During the installation of steel structure cantilever segments, the crane needs to be continuously used and cannot be evacuated, which affects the use efficiency of the crane.

Method used

A quick installation structure for the cantilever segment of the steel box girder is designed. By setting a fixing mechanism on both sides of the steel box girder, including fixing seats, limiting slots, limiting rods, adjustment components, etc., the temporary installation and welding of the cantilever is realized. .

Benefits of technology

The stable temporary installation of cantilevers is achieved, and the welding work is completed without continuous use of the crane, which improves the use rate of the crane.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a steel box girder cantilever section rapid installation structure which comprises a steel box girder, cantilevers are arranged on the two sides of the steel box girder, a plurality of fixing mechanisms are arranged between the steel box girder and the two cantilevers, a plurality of grooves are formed in the two sides of the steel box girder, and the fixing mechanisms comprise a plurality of fixing bases which are fixedly arranged on the sides, close to the steel box girder, of the cantilevers and are fixedly connected with the cantilevers. The size of the fixing seat is matched with that of the groove; the two limiting grooves are formed in the two sides of the fixing base respectively; the two limiting rods are connected to the two sides of the inner wall of the groove in a penetrating mode, and the limiting rods are matched with the limiting grooves in size; the adjusting assembly is arranged in the steel box girder, the adjusting assembly drives the two limiting rods to stretch into the two limiting grooves, the threaded columns are driven to rotate through the rotary knobs, the limiting rods on the two sides can stretch into the limiting grooves, the clamping blocks are matched with the clamping grooves, and the fixing bases and the grooves in the steel box girder are fixed together; the cantilever can be temporarily and stably installed on the steel box girder, and the utilization rate of the crane is increased.
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Description

Technical Field

[0001] The present application relates to the field of building construction, and in particular to a steel box girder cantilever segment rapid installation structure. Background Art

[0002] Steel box girder is a commonly used structural form for large-span bridges. The cross-section of a steel box girder usually includes a top plate, a bottom plate, a web plate, a transverse diaphragm and a longitudinal diaphragm. These components are connected by full welding to form an overall force-bearing system. Its advantages lie in its light weight, high strength, and strong spanning capacity. It is also suitable for curved bridges and straight bridges that bear large eccentric loads. Cantilever segments are usually welded on both sides of the steel box girder to increase the width of the steel box girder.

[0003] However, in the process of implementing relevant technical solutions, at least the following technical problems were found: during the construction and production process, regarding the installation of cantilevered sections of steel structures, they are generally lifted by a crane and tightly attached to the main section box girder, and then temporarily consolidated with a yard plate. When this type of construction method is used, the crane must always be in a hoisting state before the welding of the yard plate is completed, and the crane cannot be evacuated, affecting the use of the crane. Utility Model Content

[0004] The present application solves the problem in the prior art that a crane needs to be continuously used when installing cantilever segments by providing a quick installation structure for cantilever segments of a steel box girder, thereby achieving the effect of temporarily installing the cantilever segments on the steel box girder.

[0005] The present application provides a quick installation structure of a cantilever segment of a steel box beam, comprising a steel box beam, cantilevers are arranged on both sides of the steel box beam, a plurality of fixing mechanisms are arranged between the steel box beam and the two cantilevers, a plurality of grooves are provided on both sides of the steel box beam, and the plurality of fixing mechanisms comprise: a plurality of fixing seats, all fixedly arranged on a side of the cantilever close to the steel box beam, and the size of the fixing seats matches the size of the grooves; two limiting grooves are respectively provided on both sides of the fixing seats; two limiting rods are inserted and connected to both sides of the inner wall of the groove, and the size of the limiting rods matches the size of the limiting grooves; an adjusting component is arranged inside the steel box beam, and the adjusting component drives the two limiting rods to extend into the insides of the two limiting grooves.

[0006] Furthermore, a cavity is opened at the top of the steel box girder, and the adjustment component includes: a threaded column, rotatably connected to the top of the steel box girder; a knob, fixedly arranged on the top of the threaded column; a movable sleeve, sleeved and threadedly connected to the outer side of the bottom of the threaded column, and the movable sleeve slides inside the cavity; two hinged rods, respectively hinged to the two sides of the bottom of the movable sleeve, and the other ends of the two hinged rods are connected to the tops of the two limit rods, and the two hinged rods are movably connected to the inside of the cavity.

[0007] Furthermore, sliders are fixedly provided on both sides of the movable sleeve, and sliding grooves are provided on both sides of the top of the cavity, and the sliders are slidably connected to the inside of the sliding grooves.

[0008] Furthermore, a positioning groove is provided on one side of the fixing seat close to the steel box girder, and a positioning block is fixedly provided on one side inside the groove, and the positioning block matches the size of the positioning groove.

[0009] Furthermore, the top and bottom of the fixing seat are both interspersed with clamping blocks, the inner walls of the top and bottom of the groove are both provided with clamping grooves, and the clamping blocks match the sizes of the clamping grooves.

[0010] Furthermore, a movable groove is provided at the top and bottom of the fixing seat, the clamping block is slidably connected to the inside of the movable groove, a spring is provided inside the movable groove, and both ends of the spring are fixedly connected to the inner wall of the movable groove and the clamping block respectively.

[0011] The technical solution provided by this application has at least the following technical effects or advantages:

[0012] By turning the knob to drive the threaded column to rotate, the limit rods on both sides can be extended into the limit grooves, and the fixing seat and the groove on the steel box girder are fixed together with the cooperation of the clamping block and the clamping groove, so that the cantilever can be temporarily and stably installed on the steel box girder. The welding work of the cantilever can be completed without the continuous use of the crane, thereby improving the utilization rate of the crane. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall structure of the cantilever installation in the embodiment of the present application;

[0014] Figure 2 This is a schematic diagram of the structure of the fixing seat in the embodiment of the present application;

[0015] Figure 3 This is a schematic diagram of the cross-sectional structure of a steel box girder in an embodiment of the present application;

[0016] Figure 4 This is a schematic diagram of the structure of the adjustment component in the embodiment of the present application;

[0017] In the figure: 10, steel box girder; 20, cantilever; 30, groove; 40, fixing mechanism; 50, slot; 41, fixing seat; 42, limit slot; 43, positioning slot; 44, positioning block; 45, movable slot; 46, block; 47, spring; 48, adjustment assembly; 49, limit rod; 481, threaded column; 482, knob; 483, movable sleeve; 484, slider; 485, hinged rod. DETAILED DESCRIPTION

[0018] The embodiment of the present application discloses a quick installation structure for the cantilever segment of a steel box girder, in which the rotation of the threaded column 481 drives the rotation of the articulated rod 485, so that the two limit rods 49 can be inserted into the interior of the limit groove 42, and the block 46 is cooperated to extend into the groove 50, so that the fixing seat 41 is fixed in the groove 30, so that the cantilever 20 is temporarily installed on the steel box girder 10, and the crane can be moved away to weld the cantilever 20, thereby improving the utilization rate of the crane.

[0019] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0020] Please refer to Figure 1 , Figure 2 and Figure 3 The present embodiment provides a steel box beam cantilever segment quick installation structure, including a steel box beam 10, cantilevers 20 are arranged on both sides of the steel box beam 10, a plurality of fixing mechanisms 40 are arranged between the steel box beam 10 and the two cantilevers 20, a plurality of grooves 30 are opened on both sides of the steel box beam 10, and the plurality of fixing mechanisms 40 include a fixing seat 41, a limiting groove 42, a positioning groove 43, a positioning block 44, a movable groove 45, a clamping block 46, a spring 47, an adjustment component 48, and a limiting rod 49. The plurality of fixing seats 41 are fixedly arranged on the cantilever 20. On one side close to the steel box girder 10, the fixing seat 41 matches the size of the groove 30, the positioning groove 43 is opened on the side of the fixing seat 41 close to the steel box girder 10, the positioning block 44 is arranged on one side inside the groove 30, and the positioning block 44 matches the size of the positioning groove 43. Through the cooperation of the positioning groove 43 and the positioning block 44, the fixing seat 41 is extended into the groove 30 for positioning to prevent the fixing seat 41 from offsetting when moving, so that the fixing seat 41 on the cantilever 20 can accurately extend into the groove 30, and then the fixing seat 41 is fixed.

[0021] Please refer to Figure 1 , Figure 2 and Figure 3The two movable grooves 45 are respectively inserted and connected to the top and bottom of the fixed seat 41, and the inner walls of the top and bottom of the groove 30 are provided with a card slot 50, and the card block 46 matches the size of the card slot 50. The two movable grooves 45 are respectively opened at the top and bottom of the fixed seat 41, and the card block 46 is slidably connected to the inside of the movable groove 45. The spring 47 is arranged inside the movable groove 45, and the two ends of the spring 47 are respectively fixedly connected to the inner wall of the movable groove 45 and the card block 46. The top and bottom of the opening of the groove 30 are respectively opened. The transition groove has a triangular cross-section, and the inclined surface of the transition groove is in contact with the block 46. When the fixed seat 41 extends into the groove 30, the pressure on the block 46 by the inclined surface of the transition groove allows the block 46 to enter the movable groove 45, so that the spring 47 is compressed, and when the block 46 moves to the position of the groove 50, the elastic force of the spring 47 can drive the block 46 to extend into the interior of the groove 50, so that the fixed seat 41 is fixed to the steel box girder 10, and the cantilever 20 is installed on the steel box girder 10.

[0022] Please refer to Figure - Figure 4 , two limit grooves 42 are respectively opened on both sides of the fixing seat 41, two limit rods 49 are inserted and connected on both sides of the inner wall of the groove 30, and the limit rods 49 match the size of the limit grooves 42, the adjustment component 48 is arranged inside the steel box girder 10, and the adjustment component 48 drives the two limit rods 49 to extend into the two limit grooves 42, and a cavity is opened at the top of the steel box girder 10. The adjustment component 48 includes a threaded column 481, a knob 482, a movable sleeve 483, a slider 484, and a hinged rod 485. The threaded column 481 is rotatably connected to the top of the steel box girder 10, the knob 482 is fixedly arranged on the top of the threaded column 481, the movable sleeve 483 is sleeved and threadedly connected to the outside of the bottom of the threaded column 481, the movable sleeve 483 slides inside the cavity, and the two sliders 484 are respectively arranged on both sides of the movable sleeve 483. Slide grooves are opened on both sides of the top of the cavity, and the slider 484 is slidably connected to the inside of the slide groove. 85 are respectively hinged on both sides of the bottom of the movable sleeve 483, and the other ends of the two hinged rods 485 are intersected with the tops of the two limit rods 49. The two hinged rods 485 are movably connected to the inside of the cavity. A limit block is set on the limit rod 49 to limit the insertion of the limit rod 49 to prevent the hinged rod 485 from driving the limit rod 49 to move randomly, so that the limit rod 49 can be smoothly inserted into the inside of the limit groove 42. The movement of the movable sleeve 483 is limited by the sliders 484 on both sides of the movable sleeve 483, so that the movable sleeve 483 will not rotate with the knob 482, so that the movable sleeve 483 moves downward therewith, thereby driving the hinged hinged rod 485 to drive the limit rod 49 to move to the inside of the limit groove 42, fixing both sides of the fixed seat 41, and cooperating with the two clamping blocks 46 to fix the top and bottom of the fixed seat 41, so that the fixed seat 41 is more stable inside the groove 30, thereby improving the stability of the cantilever 20 during installation.

[0023] This application can explain its functional principle through the following operation methods:

[0024] When in use, use a crane to lift the cantilever 20 to a suitable position on one side of the steel box girder 10, align the multiple fixing seats 41 on the cantilever 20 with the grooves 30 on the steel box girder 10, and push the fixing seat 41 into the grooves 30, so that the blocks 46 at the top and bottom of the fixing seat 41 are subjected to the pressure of the transition groove at the opening of the groove 30 and extend into the movable groove 45, so that the spring 47 inside the movable groove 45 is compressed. When the fixing seat 41 is fully inserted into the groove 30, the positioning block 44 is inserted into the positioning groove 43 on the fixing seat 41 to position the fixing seat 41. At this time, the blocking block 46 moves to the position of the blocking groove 50, and the elastic force of the spring 47 causes the blocking block 46 to be inserted into the blocking groove 50, limiting the top and bottom of the fixing seat 41, and rotating the knob 482 on the steel box girder 10 so that the knob 482 can drive the threaded column 481 to rotate, so that the threaded column 481 drives the movable sleeve 483 threadedly connected to it at the bottom to rotate downward. The sliding blocks 484 on both sides of the movable sleeve 483 move inside the slide groove to limit the movement of the movable sleeve 483 and prevent the movable sleeve 483 from rotating with the threaded column 481. The downward movement of the movable sleeve 483 causes the hinged rods 485 hinged on both sides to rotate in the cavity accordingly, so that the hinged rods 485 drive the limiting rods 49 at the bottom to move in the direction of the groove 30, so that the limiting rods 49 are inserted into the limiting grooves 42 on the fixed seat 41, and the limiting blocks on the limiting rods 49 limit the movement of the limiting rods 49 to prevent the hinged rods 485 from driving the limiting rods 49 to move at will. The limiting rods 49 on both sides limit the two sides of the fixed seat 41, and cooperate with the two clamping blocks 46 to fix the top and bottom of the fixed seat 41, so that the fixed seat 41 is more stable inside the groove 30. The two cantilevers 20 are installed on both sides of the steel box girder 10, so that the crane can be moved away, and then the cantilevers 20 are welded to the steel box girder 10, thereby improving the utilization rate of the crane.

[0025] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

[0026] What has been described above are only preferred specific implementation methods of the embodiments of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes based on the technical solution and concept of the present application within the technical scope disclosed in the present application, which should be covered by the protection scope of the present application.

Claims

1. A steel box girder cantilever segment quick installation structure, comprising a steel box girder (10), wherein both sides of the steel box girder (10) are provided with cantilevers (20), characterized in that: A plurality of fixing mechanisms (40) are arranged between the steel box beam (10) and the two cantilevers (20), and a plurality of grooves (30) are provided on both sides of the steel box beam (10). The plurality of fixing mechanisms (40) include: A plurality of fixing seats (41) are all fixedly arranged on a side of the cantilever (20) close to the steel box girder (10), and the sizes of the fixing seats (41) and the groove (30) match each other; Two limiting grooves (42) are respectively arranged on two sides of the fixing seat (41); Two limiting rods (49) are inserted and connected to two sides of the inner wall of the groove (30), and the size of the limiting rods (49) matches that of the limiting groove (42); The adjusting component (48) is arranged inside the steel box beam (10), and the adjusting component (48) drives the two limiting rods (49) to extend into the inside of the two limiting grooves (42).

2. A steel box girder cantilever segment quick installation structure as claimed in claim 1, characterized in that: The top of the steel box beam (10) is provided with a cavity, and the adjustment assembly (48) comprises: A threaded column (481) rotatably connected to the top of the steel box girder (10); A knob (482) fixedly disposed on the top of the threaded column (481); A movable sleeve (483) is sleeved and threadedly connected to the outer side of the bottom of the threaded column (481), and the movable sleeve (483) slides inside the cavity; The two hinged rods (485) are respectively hinged on the two sides of the bottom of the movable sleeve (483), and the other ends of the two hinged rods (485) are connected to the tops of the two limit rods (49), and the two hinged rods (485) are movably connected to the inside of the cavity.

3. A steel box girder cantilever segment quick installation structure as claimed in claim 2, characterized in that: Slide blocks (484) are fixedly provided on both sides of the movable sleeve (483), and slide grooves are provided on both sides of the top of the cavity, and the slide blocks (484) are slidably connected to the inside of the slide grooves.

4. A steel box girder cantilever segment quick installation structure as claimed in claim 1, characterized in that: A positioning groove (43) is provided on one side of the fixing seat (41) close to the steel box girder (10), and a positioning block (44) is fixedly provided on one side inside the groove (30), wherein the size of the positioning block (44) matches that of the positioning groove (43).

5. The steel box girder cantilever segment quick installation structure according to claim 1, characterized in that: The top and bottom of the fixing seat (41) are both interlaced with a clamping block (46), the top and bottom inner walls of the groove (30) are both provided with a clamping slot (50), and the size of the clamping block (46) matches that of the clamping slot (50).

6. A steel box girder cantilever segment quick installation structure as claimed in claim 5, characterized in that: The top and bottom of the fixing seat (41) are both provided with a movable groove (45), the clamping block (46) is slidably connected to the inside of the movable groove (45), a spring (47) is provided inside the movable groove (45), and two ends of the spring (47) are respectively fixedly connected to the inner wall of the movable groove (45) and the clamping block (46).