Hidden connecting mechanism and bridge steel structure box girder comprising same

Abstract

The invention discloses a hidden type connecting mechanism which comprises a first steel structure box girder assembly and a second steel structure box girder assembly installed on one side of the first steel structure box girder assembly, and further comprises hidden connecting assemblies installed at one end of the interior of the first steel structure box girder assembly and one end of the interior of the second steel structure box girder assembly respectively. The hidden connecting assembly comprises bolt plates, and the bolt plates are connected through high-strength bolts. And the solidification protection assembly is installed at the top of the bolt plate in a clamped mode, the solidification protection assembly comprises a clamping sleeve, transmission limiting structures are installed on the two sides of the clamping sleeve, and the clamping sleeve is provided with a solidification sleeve structure for locking the bolt plate. By adopting a bolt connection mode, compared with a traditional welding mode, the installation efficiency is higher, a welding seam does not need to be checked, the device connection efficiency is improved, meanwhile, the opening is formed in the top, and after installation is completed, the internal connection structure is completely hidden by closing the top face assembly.

Description

Technical Field

[0001] This invention relates to the field of steel box girder bridges, and in particular to a concealed connection mechanism and a steel box girder bridge containing the mechanism. Background Technology

[0002] Steel box girders, also known as steel plate box girders, are a common structural form for long-span bridges. They are named for their box-shaped cross-section. The main body consists of a top plate, bottom plate, web plate, and transverse plates, all constructed using a fully welded process. The top plate often adopts an orthotropic bridge deck design with longitudinal stiffeners, featuring a wide and flat surface and strong bending and torsional resistance. It is suitable for large-span applications such as urban overpasses and overpasses, and is generally manufactured and installed in several beam segments.

[0003] In existing technologies, multiple steel box girders are welded together on site. Welding requires horizontal welding to reduce deformation, and the welding process must be carried out in stages while inspecting for defects such as porosity and slag inclusions to ensure the stability of the welded structure. At the same time, internal passages need to be reserved for personnel to weld from inside the steel box girders. However, the existence of passages not only affects the overall aesthetics of the steel box girders, but also requires additional structures to reinforce the passages and ensure the overall strength, resulting in high costs. To address this, a concealed connection mechanism and a bridge steel box girder containing the mechanism are provided. Summary of the Invention

[0004] In view of the technical problems existing in the prior art, the present invention is proposed.

[0005] Therefore, the present invention aims to solve the technical problem that the reserved channels used in the prior art may affect the overall strength of the device, and requires additional reinforcing structures to be set at the openings to ensure the overall strength.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a concealed connection mechanism, comprising a first steel structure box girder assembly and a second steel structure box girder assembly installed on one side of the first steel structure box girder assembly, and further comprising: A concealed connection assembly is installed at one end inside the first steel structure box girder assembly and the second steel structure box girder assembly, respectively; the concealed connection assembly includes a bolt plate, which is connected by high-strength bolts. A protective solidification component is snapped onto the top of a bolt plate. The protective solidification component includes a retainer, on both sides of which a transmission limiting structure is installed. The retainer is also equipped with a solidification sleeve structure that locks the bolt plate. The coagulation sleeve structure includes three sets of screws and a coagulant pack. The coagulant pack covers the outside of the bolt plate bolts. The screws are fitted with locking sleeves via threads. A drive rope, pulled by a power structure, is wound around the outside of the locking sleeves. Under the pull of the drive rope, the locking sleeves rotate away from the screws and move closer to the bolt plate. The locking sleeves drive the high-strength bolts on the bolt plate to the tightening position. After the locking sleeves rotate forward to the position of the coagulant pack, they are squeezed and broken under the continued pull of the power structure. The coagulant inside the coagulant pack flows out and covers the bolt plate bolts.

[0007] As a preferred embodiment of the concealed connection mechanism described in this invention, the top surface assembly is installed on top of the protective solidification assembly, the top surface assembly includes a road panel, a capsule is installed inside the road panel, and a metal piece for piercing the capsule is provided at the bottom of one side of the road panel.

[0008] As a preferred embodiment of the concealed connection mechanism described in this invention, a positioning post is installed at the bottom of the road panel, and two sets of slots are provided on the positioning post. A column rod is installed on the other side of the bottom of the road panel.

[0009] As a preferred embodiment of the concealed connection mechanism described in this invention, the locking sleeve tightens the bolts on the bolt plate after the lower slot of the positioning post reaches the fixed position, and the locking sleeve squeezes and breaks the coagulant pack after the upper slot of the positioning post reaches the fixed position.

[0010] As a preferred embodiment of the concealed connection mechanism described in this invention, the transmission limiting structure includes a sleeve, a limiting tube is installed on one side inside the sleeve, and a connecting steel cable passes through the limiting tube.

[0011] As a preferred embodiment of the concealed connection mechanism described in this invention, one end of the connecting steel cable is fixed to the inner wall of the sleeve by a connector block, and the other end of the connecting steel cable is connected to three sets of drive ropes.

[0012] As a preferred embodiment of the concealed connection mechanism described in this invention, a clamp is installed on the top of the sleeve, and a limit block is installed on the inner side of the clamp.

[0013] As a preferred embodiment of the concealed connection mechanism described in this invention, a top block is installed on the bolt plate, a crossbar is installed on one side of the top block, an installation rod is installed between the crossbars, and the installation rod and the crossbar are welded to the inner wall of the first steel structure box girder assembly.

[0014] In a preferred embodiment of the concealed connection mechanism described in this invention, the interior of the coagulant package is filled with silicate cement.

[0015] To solve the above-mentioned technical problems, the present invention also provides the following technical solution: including a concealed connection mechanism; and a steel structure box girder for bridges, comprising: As a preferred embodiment of the concealed connection mechanism and the bridge steel structure box girder containing the mechanism described in this invention, the first steel structure box girder assembly includes a box body, side braces are installed on both sides of the box body, support members are installed inside the box body, a reinforcing beam is installed at the bottom inside the box body, and an installation groove is provided on the top of the box body.

[0016] As a preferred embodiment of the concealed connection mechanism and the bridge steel box girder containing the mechanism described in this invention, wherein: the structure of the first steel box girder assembly is the same as that of the second steel box girder assembly and is symmetrically arranged.

[0017] As a preferred embodiment of the concealed connection mechanism and the bridge steel structure box girder containing the mechanism described in this invention, wherein: the edge of the mounting groove is provided with a protrusion that allows the metal sheet to be bent and puncture the capsule.

[0018] The beneficial effects of this invention are as follows: By adopting a bolted connection method, the installation efficiency is higher compared to the traditional welding method. It eliminates the need for weld inspection, increasing the efficiency of device connection. Furthermore, by placing the opening at the top, the internal connection structure is fully concealed after installation by sealing the top component, solving the problem of costly and lengthy post-installation sealing of reserved gaps. This installation method also eliminates the need for internal channels, ensuring the overall strength of the device and reducing costs associated with reinforcing reserved channels. The inclusion of a clamping sleeve protects the bolts, preventing rainwater from seeping into the bolt surface and increasing their lifespan. The solidified sleeve structure ensures the bolts are tightened... The system continuously applies tightening force to the bolts, preventing them from loosening and solving subsequent maintenance difficulties. It also includes a coagulant pack that locks the bolts in place after they are in the predetermined position, providing a self-checking function. No coagulant will leak out if the bolts are not properly tightened. This method allows for verification of bolt installation position and compliance with specifications, preventing accidents and indirectly achieving bolt installation inspection. It reduces inspection steps, streamlines the process, saves labor costs, and improves efficiency. Furthermore, the locking mechanism completely eliminates the problem of bolt loosening, eliminating the need for frequent tightening and saving significant maintenance costs. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein: Figure 1 This is a schematic diagram of the overall axonometric structure of the device according to one embodiment of the present invention; Figure 2 This is a schematic diagram of the hidden connection component of the device according to an embodiment of the present invention; Figure 3 This is a schematic diagram illustrating the specific structure of the hidden connection component according to one embodiment of the present invention; Figure 4 A schematic diagram of the installation structure of the protective solidification component according to an embodiment of the present invention; Figure 5 A schematic diagram of the specific structure of the protective solidification component according to one embodiment of the present invention is provided; Figure 6 A schematic diagram of the transmission limiting structure according to one embodiment of the present invention is provided. Figure 7 A schematic diagram of the solidification sleeve structure according to one embodiment of the present invention is provided; Figure 8 This is a schematic diagram of the specific structure of the top surface component according to one embodiment of the present invention; In the diagram: 100, First steel structure box girder assembly; 101, Box body; 102, Support component; 103, Side brace; 104, Reinforcing beam; 105, Mounting groove; 200, Second steel structure box girder assembly; 300, Top surface assembly; 301, Road panel; 302, Positioning post; 303, Slot; 304, Column; 305, Metal sheet; 306, Capsule; 400, Hidden connection assembly; 401, Mounting rod; 402. Crossbar; 403, Top block; 404, Bolt plate; 500, Protective solidification assembly; 501, Sleeve; 502, Transmission limiting structure; 502a, Sleeve; 502b, Clamp; 502c, Limiting block; 502d, Limiting tube; 502e, Connecting steel cable; 502f, Terminal block; 503, Solidification sleeve structure; 503a, Screw; 503b, Locking sleeve; 503c, Drive rope; 503d, Solidifying agent bag. Detailed Implementation

[0020] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0021] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0022] Secondly, the present invention will be described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure will be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0023] Furthermore, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places throughout this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that mutually excludes other embodiments.

[0024] Example 1 Reference Figure 3-8 This embodiment provides a concealed connection mechanism, including a first steel structure box girder assembly 100 and a second steel structure box girder assembly 200 installed on one side of the first steel structure box girder assembly 100, and further including: The concealed connecting component 400 includes a top block 403 mounted on a bolt plate 404, a crossbar 402 mounted on one side of the top block 403, and an installation rod 401 mounted between the crossbars 402. The installation rod 401 and the crossbar 402 are welded to the inner wall of the first steel structure box girder assembly 100 and are respectively installed at one end inside the first steel structure box girder assembly 100 and the second steel structure box girder assembly 200. The concealed connecting component 400 includes a bolt plate 404, which is connected by high-strength bolts. A protective solidification component 500 is snap-fitted onto the top of the bolt plate 404. The protective solidification component 500 includes a retainer 501, which covers the high-strength bolt portion of the bolt plate 404, protecting the bolts from rain and other debris, thus increasing bolt protection and service life. Transmission limiting structures 502 are installed on both sides of the retainer 501. These structures generate power to drive the solidification sleeve structure 503. The transmission limiting structure 502 includes a sleeve 502a, which limits and fixes the top component 300, ensuring it remains in a predetermined position for easy subsequent operation. A limiting tube 502d is installed on one side inside the sleeve 502a, through which a connecting steel rod passes. Cable 502e, one end of the connecting steel cable 502e is fixed to the inner wall of sleeve 502a through connector block 502f, and the other end of the connecting steel cable 502e is connected to three sets of drive ropes 503c. The drive ropes are pulled by the connecting steel cable. A clamp 502b is installed on the top of sleeve 502a. A limit block 502c is installed on the inner side of clamp 502b. The clamp 502b installs the internal limit block 502c. The limit block 502c limits the positioning post 302, so that personnel can know the specific position of the positioning post 302 and judge whether the coagulant package 503d is broken. The sleeve 501 is equipped with a coagulant sleeve structure 503 that locks the bolt plate 404. The solidification sleeve structure 503 includes three sets of screws 503a and a solidifying agent package 503d. The solidifying agent package 503d covers the outside of the bolts on the bolt plate 404. The screws 503a are threadedly mounted with locking sleeves 503b, which cooperate with the bolt plate 404. A drive rope 503c, which is pulled by a power structure, is wound around the outside of the locking sleeve 503b. One end of the drive rope 503c is fixed to the locking sleeve 503b and then wound around it several times before the other end is connected to the power structure. Under the pull of the drive rope 503c, the locking sleeve 503b rotates away from the screws 503a and moves closer to them. Bolt plate 404 and locking sleeve 503b drive the high-strength bolts of bolt plate 404 to the tightening position, maintaining tension for a certain period of time to prevent loosening when the coagulant pack 503d is not yet solidified. At the same time, continuous pressure is applied afterward to prevent loosening. After locking sleeve 503b rotates forward to the position of coagulant pack 503d, the power structure continues to pull and squeezes and breaks the pack. The coagulant inside coagulant pack 503d flows out and covers the bolts of bolt plate 404. The interior of coagulant pack 503d is filled with silicate cement, which can effectively ensure the bolt solidification. The top assembly 300 is installed on top of the protective solidification assembly 500. The top assembly 300 includes a road panel 301, inside which is a capsule 306. The capsule 306 is still filled with silicate cement, which allows for quick adhesion to the bottom of the road panel 301, preventing shaking during welding. This also further increases the stability of the connection and solves the problem of unstable welding caused by welding only being possible from the top. A puncture point is provided on one side of the bottom of the road panel 301. The metal sheet 305 of the capsule 306 has barbs. The bottom of the road panel 301 is equipped with a positioning post 302 with two sets of slots 303. The other side of the bottom of the road panel 301 is equipped with a column rod 304. When the slot 303 of the positioning post 302 reaches the fixed position, the locking sleeve 503b tightens the bolts of the bolt plate 404 into place. When the slot 303 of the positioning post 302 reaches the fixed position, the locking sleeve 503b squeezes and breaks the coagulant pack 503d.

[0025] This embodiment has the following workflow: First, the hidden connecting component 400 is installed in a suitable position. Then, the bolt plate 404 is fixed with high-strength bolts. After fixing, the retaining sleeve 501 is placed over the bolt plate 404 for protection. After this, the retaining sleeve 501 can be inserted into the top component 300. At this time, the positioning post 302 presses down on the connecting steel cable 502e. The three sets of drive ropes 503c driven by the connecting steel cable 502e extend. When the drive ropes 503c extend, they will drive the locking sleeve 503b to rotate. Because the locking sleeve 503b is... The thread is installed on the screw 503a. When it rotates, it enters the bolt in the bolt plate 404. After entering, it can drive the bolt in the bolt plate 404 to rotate. During the rotation, it will move forward continuously. When the positioning pin 302 is in the lower slot 303 and reaches the fixed position, the locking sleeve 503b tightens the bolt in the bolt plate 404. When the positioning pin 302 is pressed down further, the upper slot 303 of the positioning pin 302 reaches the fixed position. The locking sleeve 503b squeezes and breaks the coagulant pack 503d, and the coagulant pack 503d is covered with coagulant.

[0026] Example 2 Reference Figure 1-2 This is the second embodiment of the present invention. This embodiment is based on the previous embodiment, but differs from the previous embodiment in that it provides a steel box girder for bridges, comprising: The first steel structure box girder assembly 100 includes a box body 101, side supports 103 installed on both sides of the box body 101, support members 102 installed inside the box body 101, a reinforcing beam 104 installed at the bottom inside the box body 101, and an installation groove 105 provided on the top of the box body 101. The structure of the first steel structure box girder assembly 100 is the same as that of the second steel structure box girder assembly 200 and is symmetrically arranged. The edge of the installation groove 105 is provided with protrusions that allow the metal sheet 305 to bend and pierce the capsule 306. The protrusions can assist in piercing the capsule 306 and at the same time support the road panel 301, increase multiple connection methods, ensure the stability of the road panel 301 installation, and avoid the problem of insufficient overall strength due to insufficient welding adhesion caused by construction personnel errors.

[0027] This embodiment has the following workflow: When the road panel 301 is placed in the mounting groove 105, the protruding compression metal sheet 305 along the edge of the mounting groove 105 can be pressed down. The metal sheet 305 can puncture the capsule 306. The adhesive flowing out from the punctured capsule 306 covers and adheres to the bottom of the road panel 301. At this time, the top of the road panel 301 is welded to ensure the stability of the road panel 301 installation.

[0028] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the currently considered best mode for carrying out the invention, or those features that are not relevant to implementing the invention) may be omitted.

[0029] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0030] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A concealed connection mechanism, comprising a first steel structure box girder assembly and a second steel structure box girder assembly installed on one side of the first steel structure box girder assembly, characterized in that, Also includes: A concealed connection assembly is installed at one end inside the first steel structure box girder assembly and the second steel structure box girder assembly, respectively; the concealed connection assembly includes a bolt plate, which is connected by high-strength bolts. A protective solidification component is snapped onto the top of a bolt plate. The protective solidification component includes a retainer, on both sides of which a transmission limiting structure is installed. The retainer is also equipped with a solidification sleeve structure that locks the bolt plate. The coagulation sleeve structure includes three sets of screws and a coagulant pack. The coagulant pack covers the outside of the bolt plate bolts. The screws are fitted with locking sleeves via threads. A drive rope, pulled by a power structure, is wound around the outside of the locking sleeves. Under the pull of the drive rope, the locking sleeves rotate away from the screws and move closer to the bolt plate. The locking sleeves drive the high-strength bolts on the bolt plate to the tightening position. After the locking sleeves rotate forward to the position of the coagulant pack, they are squeezed and broken under the continued pull of the power structure. The coagulant inside the coagulant pack flows out and covers the bolt plate bolts.

2. The concealed connection mechanism according to claim 1, characterized in that: A top surface assembly is installed on top of the protective solidification assembly. The top surface assembly includes a road panel, inside which a capsule is installed. A metal plate for puncturing the capsule is provided at the bottom of one side of the road panel.

3. The concealed connection mechanism according to claim 2, characterized in that: A positioning post is installed at the bottom of the road panel, and two sets of slots are provided on the positioning post. A column is installed on the other side of the bottom of the road panel.

4. The concealed connection mechanism according to claim 3, characterized in that: After the positioning post reaches the fixed position in the lower slot, the locking sleeve tightens the bolts on the bolt plate into place. After the positioning post reaches the fixed position in the upper slot, the locking sleeve squeezes and breaks the coagulant pack.

5. The concealed connection mechanism according to claim 1, characterized in that: The transmission limiting structure includes a sleeve, a limiting tube is installed on one side inside the sleeve, and a connecting steel cable passes through the limiting tube.

6. The concealed connection mechanism according to claim 5, characterized in that: One end of the connecting steel cable is fixed to the inner wall of the sleeve by a connector block, and the other end of the connecting steel cable is connected to three sets of drive ropes.

7. The concealed connection mechanism according to claim 5, characterized in that: A clamp is installed on the top of the sleeve, and a limit block is installed on the inner side of the clamp.

8. The concealed connection mechanism according to claim 1, characterized in that: A top block is installed on the bolt plate, a crossbar is installed on one side of the top block, and an installation rod is installed between the crossbars. The installation rod and the crossbar are welded to the inner wall of the first steel structure box girder assembly.

9. A concealed connection mechanism according to claim 1, characterized in that: The coagulant package is filled with silicate cement.

10. A steel box girder for bridges, characterized in that: Includes a concealed connection mechanism as described in any one of claims 1 to 9; and, The first steel structure box girder assembly includes a box body, side braces are installed on both sides of the box body, support members are installed inside the box body, a reinforcing beam is installed at the bottom inside the box body, and an installation groove is provided on the top of the box body.

11. A steel box girder for bridges according to claim 10, characterized in that: The structure of the first steel structure box girder assembly is the same as that of the second steel structure box girder assembly and is symmetrically arranged.

12. A steel box girder for bridges according to claim 10, characterized in that: The edge of the mounting groove is provided with protrusions that allow the metal sheet to be bent and puncture the capsule.

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