Bridge connecting device

By designing multi-point connection devices on the bridge, including connecting plates and connecting rods, the problem of loose connection between the bridge and the support brackets is solved, the stability and bearing capacity of the bridge are improved, the service life is extended and the safety is improved.

CN223363731UActive Publication Date: 2025-09-19CHINA CONSTR THIRD BUREAU GRP (SHENZHEN) CO LTD
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Patent Information

Application Number
CN202422157246.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-09-03
Publication Date
2025-09-19
Estimated Expiration
2034-09-03

AI Technical Summary

Technical Problem

There are insufficient connection points between the existing bridge and the support brackets, resulting in loose connections and affecting the safety and stability of the cable system.

Method used

A bridge connection device is designed, including a bridge, a connecting plate and a connecting rod. The connecting plate is arranged on the side wall of the bridge, and the two ends of the connecting rod are respectively a fixed end and a connecting end. The stability and bearing capacity of the bridge are enhanced through a multi-point connection method.

Benefits of technology

The multi-point connection method significantly enhances the overall stability and bearing capacity of the bridge, reduces local stress concentration, extends the service life of the bridge, and improves the safety and reliability of the structure.

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Abstract

The utility model provides a bridge connecting device which comprises a bridge, a connecting plate and a connecting rod, and the connecting plate is arranged on the side wall of the bridge. The two ends of each connecting rod are a fixed end and a connecting end respectively, the fixed ends are fixedly arranged, the connecting ends are fixedly connected with the connecting plates, the number of the connecting plates is two or more, and the number of the connecting rods is two or more correspondingly. According to the bridge connecting device, the fixed ends of the connecting rods are fixed, the connecting ends of the connecting rods are connected to the connecting plates, the connecting plates are connected to the bridge, the number of the connecting plates and the number of the connecting rods are both more than two, and the overall stability and the bearing capacity of the bridge are remarkably enhanced. The multi-point connection mode can effectively disperse the weight of cables or electrical components borne on the bridge, reduce local stress concentration and prolong the service life of the bridge.
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Description

Technical Field

[0001] The utility model relates to the technical field of electrical equipment, in particular to a bridge connection device. Background Art

[0002] Cable trays, an indispensable component of modern electrical engineering, have a history dating back to the 1950s. With the rapid advancement of industrialization, cable trays, due to their superior cable support and management capabilities, were first widely used in Europe and the United States, quickly becoming a key standard for electrical wiring. In China, the cable tray industry began to develop after the reform and opening up policy. By introducing advanced foreign technology and equipment, the industry gradually achieved localization and large-scale production, forming a relatively mature industrial chain.

[0003] However, existing technologies still present challenges in the installation and maintenance of cable bridges. According to installation specifications, electrical cable bridge connections must ensure that each section is securely supported and hanger-mounted to ensure the safety and stability of the cable system. Currently, steel crossarms, a common form of cable bridge supports and hangers, meet basic requirements to a certain extent. However, due to the limited connection points between the cable bridge and the supports and hangers, existing technologies present an increasingly vulnerable and unstable design. Utility Model Content

[0004] In view of this, the purpose of the present invention is to provide a bridge connection device in order to overcome the deficiencies in the prior art.

[0005] The utility model provides the following technical solutions:

[0006] An embodiment of the present application provides a bridge frame connection device, including a bridge frame, a connecting plate and a connecting rod, wherein the connecting plate is arranged on the side wall of the bridge frame; the two ends of the connecting rod are respectively a fixed end and a connecting end, the fixed end is fixedly arranged, and the connecting end is fixedly connected to the connecting plate, more than two connecting plates are arranged, and more than two connecting rods are correspondingly arranged.

[0007] In one embodiment, the connecting plate includes a first plate body portion, a second plate body portion and a third plate body portion, the first plate body portion and the third plate body portion are arranged in parallel with each other, and the first plate body portion and the third plate body portion are arranged vertically on the second plate body portion to form the connecting plate with a Z-shaped plate structure.

[0008] In one embodiment, the bridge frame includes a groove bottom wall and a groove side wall, the groove bottom wall is fixedly connected to the groove side wall, and two groove side walls are arranged at intervals on the groove bottom wall, and a bridge frame with a U-shaped groove body structure for accommodating the groove body is formed by the groove bottom wall and the two groove side walls.

[0009] In one embodiment, the second plate portion is fixedly connected to the groove side wall.

[0010] In one embodiment, a first mating through hole is provided on the second plate body, a connecting piece is provided at the first mating through hole, and the second plate body is fixedly connected to the bridge frame through the connecting piece.

[0011] In one embodiment, the first mating through hole is a long hole.

[0012] In one embodiment, a plurality of the first mating through holes are provided on one of the connecting plates, and the connecting member is provided at at least two of the first mating through holes on one of the connecting plates; the plurality of the first mating through holes are divided into two groups, and the two groups of the first mating through holes are respectively a first hole group and a second hole group, the first mating through holes in the first hole group are distributed along a first track, and the first mating through holes in the second hole group are distributed along a second track, and the first track is parallel to the second track.

[0013] In one embodiment, a second mating through hole is provided on the first plate body, and the connecting end is fixedly provided at the second mating through hole of the first plate body.

[0014] In one embodiment, the connecting end is provided with a protrusion that is snap-fitted with the second mating through hole, and the end surface of the second mating through hole blocks the protrusion so that the connecting end is snap-fitted with the first plate body.

[0015] In one embodiment, the protrusion is sleeved on the connection end, and the protrusion is threadedly engaged with the connection end.

[0016] The embodiments of the present utility model have the following advantages:

[0017] The fixed end of the connecting rod is fixed, and the connecting end of the connecting rod is connected to the connecting plate, which is connected to the bridge. Providing two or more connecting plates and connecting rods significantly enhances the overall stability and load-bearing capacity of the bridge. This multi-point connection method effectively disperses the weight of cables and electrical components carried by the bridge, reduces local stress concentration, and extends the service life of the bridge.

[0018] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 A structural schematic diagram showing one perspective of one embodiment of a bridge connection device provided in an embodiment of the present application is shown;

[0021] Figure 2 A schematic structural diagram showing two perspectives of a connecting plate of one embodiment of a bridge connecting device provided in an embodiment of the present application is shown;

[0022] Figure 3 A schematic structural diagram showing three perspectives of a connecting plate of one embodiment of a bridge connecting device provided in an embodiment of the present application is shown;

[0023] Figure 4 Schematic diagram showing the structure of a connecting plate of one embodiment of a bridge connecting device provided in an embodiment of the present application from four perspectives;

[0024] Figure 5 A five-view structural schematic diagram of a connecting plate of one embodiment of a bridge connecting device provided in an embodiment of the present application is shown.

[0025] Description of main component symbols:

[0026] 100-bridge; 110-bottom wall of the trough; 120-side wall of the trough; 130-accommodating trough body;

[0027] 200 - connecting plate; 210 - first plate body; 212 - second mating through hole; 220 - second plate body; 222 - first mating through hole; 230 - third plate body;

[0028] 300-connecting rod; 310-fixed end; 320-connecting end; 330-protruding portion;

[0029] 400-first track; 450-second track. DETAILED DESCRIPTION

[0030] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0031] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. Conversely, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only.

[0032] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs. The terms used in the template description herein are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0035] like Figure 1 As shown, an embodiment of the present application provides a bridge connection device, including a bridge 100 , a connection plate 200 and a connection rod 300 .

[0036] The bridge 100 is used to accommodate cables or other electrical components.

[0037] like Figure 1 As shown, the connecting plate 200 is provided on the side wall of the bridge 100. For example, the connecting plate 200 is fixed to the bridge 100 by welding, bolting or clamping. In other embodiments, the connecting plate 200 is hingedly provided on the bridge 100.

[0038] Exemplarily, at least two connection points are provided between the connection plate 200 and the side wall of the bridge frame 100 .

[0039] The two ends of the connecting rod 300 are a fixed end 310 and a connecting end 320 . The fixed end 310 is fixedly arranged, and the connecting end 320 is fixedly connected to the connecting plate 200 . If there are more than two connecting plates 200 , there are correspondingly more than two connecting rods 300 .

[0040] Exemplarily, the connecting rod 300 is arranged vertically, and the fixed end 310 and the connecting end 320 are distributed in sequence along the direction of gravity, that is, the bridge frame 100 is hoisted on the connecting rod 300, and the connecting rod 300 and the bridge frame 100 are distributed in sequence along the direction of gravity; but in other embodiments, the connecting end 320 and the fixed end 310 are distributed in sequence along the direction of gravity, that is, the connecting rod 300 is used to support the bridge frame 100.

[0041] Exemplarily, the fixing end 310 is provided on the roof or the bracket by welding, clamping or bolting. Exemplarily, the connecting end 320 is fixedly connected to the connecting plate 200 by welding, clamping or bolting.

[0042] The fixed end 310 of the connecting rod 300 is fixed, and the connecting end 320 of the connecting rod 300 is connected to the connecting plate 200, which is connected to the bridge 100. Providing two or more connecting plates 200 and connecting rods 300 significantly enhances the overall stability and load-bearing capacity of the bridge 100. This multi-point connection method effectively disperses the weight of cables or electrical components carried by the bridge 100, reduces local stress concentration, and extends the service life of the bridge 100.

[0043] Since the connecting plate 200 and the connecting rod 300 are relatively simple and easy to operate, the installation process of the device can be faster and more convenient. At the same time, when maintenance or adjustment is required, the relevant components can be disassembled and reassembled more easily, reducing maintenance costs and difficulty.

[0044] The multi-point connection design and the distribution of the connecting rods 300 along the direction of gravity help prevent the bridge 100 from deforming or falling when subjected to external forces, thereby enhancing the safety of the structure. This is of great significance for ensuring the normal operation of cables and electrical components and preventing accidents.

[0045] At least two connection points are set between the connecting plate 200 and the side wall of the bridge frame 100, and more than two connecting rods 300 are set accordingly. This multi-point connection method effectively enhances the stability and rigidity between the bridge frame 100 and the supporting structure, reduces the risk of damage caused by excessive force at a single point, and thus improves the safety and reliability of the overall structure.

[0046] like Figure 1As shown, in one embodiment, the connecting plate 200 includes a first plate body 210, a second plate body 220 and a third plate body 230; Figure 4 As shown, the first plate portion 210 and the third plate portion 230 are spaced apart and arranged in parallel. The first plate portion 210 and the third plate portion 230 are respectively arranged vertically on the second plate portion 220 to form a connecting plate 200 with a Z-shaped plate structure.

[0047] The Z-shaped connecting plate 200 forms a more stable triangular or trapezoidal structure through the mutual support of the first plate portion 210, the second plate portion 220, and the third plate portion 230. This structure is mechanically stable and can effectively resist external loads and vibrations, thereby enhancing the structural strength of the connecting plate 200 and the entire bridge 100 connection device.

[0048] When subjected to external forces, the Z-shaped plate structure can more effectively disperse and transfer stress, avoiding stress concentration. This helps reduce deformation and damage to the connecting plate 200 and the bridge 100, extending their service life. The Z-shaped plate structure allows the connecting plate 200 to have sufficient vertical and horizontal extension and adjustment space. This design allows the connecting plate 200 to better adapt to complex and changing installation environments, such as bridge 100 sidewalls at different angles and cables or electrical components at varying spacings.

[0049] like Figure 1 As shown, in one embodiment, the bridge 100 includes a groove bottom wall 110 and a groove side wall 120, the groove bottom wall 110 is fixedly connected to the groove side wall 120, and two groove side walls 120 are arranged at intervals on the groove bottom wall 110, and the groove bottom wall 110 and the two groove side walls 120 form a bridge 100 with a U-shaped groove body structure for accommodating the groove body 130.

[0050] For example, Figure 1 As shown, the groove bottom wall 110 and the groove side wall 120 are arranged perpendicularly.

[0051] Exemplarily, the groove bottom wall 110 and the groove side wall 120 are fixedly connected by welding, clamping, bolt connection or integral molding.

[0052] The U-shaped trough structure increases the overall rigidity and stability of the bridge 100 through the mutual support of the trough bottom wall 110 and the two trough side walls 120. This structure can effectively disperse pressure when bearing loads, reducing deformation or damage caused by excessive force at a single point.

[0053] Thanks to its optimized structure, the bridge 100 maintains its lightweight while possessing a stronger load-bearing capacity. The space formed by the bottom wall 110 and the two side walls 120, the trough body 130, can accommodate and effectively support the equipment or cables installed therein, meeting the needs of various scenarios. This structure effectively utilizes space, forming a trough body to centrally accommodate equipment or cables, avoiding a cluttered layout and improving the overall aesthetics and neatness of the space.

[0054] like Figure 1 As shown, in one embodiment, the second plate portion 220 is fixedly connected to the groove side wall 120. Figure 1 As shown, in one embodiment, the second plate portion 220 is fixed to the side of the tank sidewall 120 near the receiving tank body 130, that is, the second plate portion 220 is located inside the receiving tank body 130. When the second plate portion 220 is fixed inside the receiving tank body 130, it can serve as an additional support structure, further enhancing the stability and load-bearing capacity of the tank body. It can also serve as a platform for mounting accessories (such as brackets, fixings, etc.), making equipment installation more convenient and stable. However, in other embodiments, the second plate portion 220 is fixed to the side of the tank sidewall 120 away from the receiving tank body 130, that is, the second plate portion 220 is fixed to the tank sidewall 120 and located outside the receiving tank body 130. When the second plate portion 220 is fixed outside the tank sidewall 120, it can serve as a protective barrier or a mounting location for expansion accessories. For example, a protective cover, label plate, or additional terminal block can be installed on it to enhance the safety, recognizability, or functionality of the equipment.

[0055] like Figure 2 and Figure 3 As shown, in one embodiment, a first mating through hole 222 is provided on the second plate body 220 , a connecting piece is provided at the first mating through hole 222 , and the second plate body 220 is fixedly connected to the bridge 100 through the connecting piece.

[0056] During use, connectors are inserted through the first mating holes 222 of the slot sidewalls 120 and the second plate portion 220, securing the second plate portion 220 and the bridge 100 together. Exemplarily, the connectors are rivets, screws, bolts, etc. These connectors securely connect the second plate portion 220 to the bridge 100, ensuring structural stability and reliability. These connectors, such as rivets, screws, or bolts, provide sufficient tightening force to prevent loosening or dislodging due to vibration or external forces during use.

[0057] The presence of the connector not only strengthens the connection between the second plate portion 220 and the bridge 100, but also helps to disperse and transfer the load. When subjected to external forces, the connector can evenly distribute the force to the entire bridge 100 structure, thereby improving the reliability and durability of the overall structure.

[0058] like Figure 2 and Figure 3 As shown, in one embodiment, the first mating through-hole 222 is an elongated hole, which facilitates the adjustment of the connector's position, allowing it to avoid certain cables or electrical components during installation, providing greater installation flexibility. The elongated hole design allows for greater adjustment of the connection between the second plate portion 220 and the bridge 100. This adaptability ensures a correct connection during installation, even with minor positional deviations or manufacturing errors, by adjusting the connector's position within the elongated hole. This improves installation flexibility and error tolerance.

[0059] like Figure 2 and Figure 3 As shown, in one embodiment, a plurality of first mating through holes 222 are provided on a connecting plate 200 , and connecting pieces are provided at at least two of the first mating through holes 222 on a connecting plate 200 .

[0060] Multiple first mating through holes 222 are divided into two groups, the two groups of first mating through holes 222 are respectively the first hole group and the second hole group. The first mating through holes 222 in the first hole group are distributed along the first track 400, and the first mating through holes 222 in the second hole group are distributed along the second track 450. The first track 400 is parallel to the second track 450.

[0061] Exemplarily, the first track 400 and the second track 450 are arranged along a straight line.

[0062] By providing multiple first mating through-holes 222 on the connecting plate 200 and distributing them in groups along different but parallel paths, a more stable connection between the connecting plate 200 and the bridge 100 or other components can be ensured. Multiple connection points distribute the load, reducing the risk of single-point stress, thereby improving the stability and durability of the entire mechanical structure.

[0063] Because the first mating through holes 222 are grouped and distributed along different paths, when the mechanical structure is subjected to external forces, stress can be more evenly distributed across the various connection points. This optimized stress distribution helps reduce stress concentration and lowers the risk of structural damage.

[0064] The first mating through-holes 222, grouped and arranged along parallel paths, provide more reference points and adjustment space during installation. Installers can select appropriate connection points as needed and ensure installation accuracy by adjusting the position of the connectors. This helps improve the overall performance and reliability of the mechanical structure.

[0065] The provision of multiple first mating through-holes 222 allows the connecting plate 200 to adapt to different installation conditions and requirements. For example, when the position or angle of the connecting plate 200 needs to be adjusted, different connection points can be selected to achieve this. This flexibility improves the adaptability and scalability of the mechanical structure.

[0066] Illustratively, each connecting plate 200 is provided with twelve first mating through holes 222, which are divided into two groups: a first hole group having six first mating through holes 222, and a second hole group having six first mating through holes 222. The first hole group is distributed along a first track 400, and the second hole group is distributed along a second track 450. In other embodiments, each connecting plate 200 is provided with ten first mating through holes 222, which are divided into two groups: a first hole group having five first mating through holes 222, and a second hole group having five first mating through holes 222. The first hole group is distributed along the first track 400, and the second hole group is distributed along the second track 450. In other embodiments, eight first mating through holes 222 are provided on each connecting plate 200, and the eight first mating through holes 222 are divided into two groups, the first hole group has four first mating through holes 222, and the second hole group has four first mating through holes 222, the first hole group is distributed along the first track 400, and the second hole group is distributed along the second track 450.

[0067] like Figure 1 、 Figure 2 and Figure 5 As shown, in one embodiment, a second mating through hole 212 is provided on the first plate body 210, and the connecting end 320 is fixedly provided at the second mating through hole 212 of the first plate body 210. Exemplarily, the connecting end 320 is fixedly provided at the second mating through hole 212 of the first plate body 210 by welding, bolt connection, clamping, or the like.

[0068] like Figure 1 As shown, in one embodiment, the connection end 320 is provided with a protrusion 330 that is snap-fitted with the second mating through hole 212 , and the end surface of the second mating through hole 212 stops the protrusion 330 to enable the connection end 320 to be snap-fitted with the first plate body 210 .

[0069] For example, Figure 1 As shown, the outer diameter of the protrusion 330 is larger than the outer diameter of the connection end 320 , and the outer diameter of the protrusion 330 is larger than the inner diameter of the second matching through hole 212 , and the outer diameter of the connection end 320 is less than or equal to the inner diameter of the second matching through hole 212 . Figure 1 The structure of the raised portion 330 is not complete. Figure 1 Only a portion of the protrusion 330 is shown in FIG. 4 , and the rest of the protrusion 330 is blocked by the first plate portion 210 .

[0070] During use, the connecting end 320 is inserted into the second matching through hole 212, and then the protrusion 330 is sleeved onto the connecting end 320 to form the following Figure 1 In the state shown, the end surface stopping protrusion 330 at the second matching through hole 212 passes through the second matching through hole 212 , and the protrusion 330 stops the bridge 100 from falling off the connecting rod 300 .

[0071] The design of the protrusion 330 enables the connection end 320 to form a secure engagement with the second mating through-hole 212 through the interaction between the protrusion 330 and the through-hole end surface. This design effectively prevents the connection end 320 from loosening or falling off when subjected to external forces, thereby enhancing the stability and reliability of the connection.

[0072] like Figure 1 As shown, in one embodiment, the protrusion 330 is sleeved on the connection end 320, and the protrusion 330 is threadedly engaged with the connection end 320. For example, the connection end 320 is provided with an external thread on its outer circumference, and a through hole is provided in the middle of the protrusion 330. The connection end 320 is inserted into the through hole, and an internal thread is provided on the inner wall of the through hole. The internal thread of the through hole is threadedly engaged with the external thread of the connection end 320.

[0073] In all examples shown and described herein, any specific values ​​should be interpreted as merely exemplary and not limiting, and thus other examples of the exemplary embodiments may have different values.

[0074] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0075] The above-described embodiments merely represent several implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the scope of the present invention, all of which fall within the scope of protection of the present invention.

Claims

1. A bridge connection device, characterized in that: include: Bridge (100); A connecting plate (200), the connecting plate (200) being arranged on a side wall of the bridge (100); A connecting rod (300), wherein both ends of the connecting rod (300) are a fixed end (310) and a connecting end (320), the fixed end (310) is fixedly arranged, and the connecting end (320) is fixedly connected to the connecting plate (200), and if more than two connecting plates (200) are provided, more than two connecting rods (300) are provided accordingly; More than two connecting plates (200) are provided, and more than two connecting rods (300) are provided accordingly; The connecting plate (200) comprises a first plate body (210), a second plate body (220) and a third plate body (230), wherein the first plate body (210) and the third plate body (230) are arranged in parallel with each other, and the first plate body (210) and the third plate body (230) are arranged vertically on the second plate body (220), forming the connecting plate (200) with a Z-shaped plate structure; A first matching through hole (222) is provided on the second plate body (220), a connecting piece is provided at the first matching through hole (222), and the second plate body (220) and the bridge (100) are fixedly connected via the connecting piece; A plurality of the first matching through holes (222) are provided on one of the connecting plates (200), and the connecting piece is provided at at least two of the first matching through holes (222) on one of the connecting plates (200); The plurality of first matching through holes (222) are divided into two groups, the two groups of the first matching through holes (222) being a first hole group and a second hole group, respectively; the first matching through holes (222) in the first hole group are distributed along a first track (400), and the first matching through holes (222) in the second hole group are distributed along a second track (450), and the first track (400) is parallel to the second track (450).

2. The bridge connection device according to claim 1, characterized in that: The bridge (100) comprises a groove bottom wall (110) and a groove side wall (120), wherein the groove bottom wall (110) is fixedly connected to the groove side wall (120), and two groove side walls (120) are arranged on the groove bottom wall (110) at intervals, and a bridge (100) having a U-shaped groove structure for accommodating a groove body (130) is formed by the groove bottom wall (110) and the two groove side walls (120).

3. The bridge connection device according to claim 2, characterized in that: The second plate portion (220) is fixedly connected to the groove side wall (120).

4. The bridge connection device according to claim 1, characterized in that: The first matching through hole (222) is a long hole.

5. The bridge connection device according to claim 1, characterized in that: A second matching through hole (212) is provided on the first plate body (210), and the connecting end (320) is fixedly arranged at the second matching through hole (212) of the first plate body (210).

6. The bridge connection device according to claim 5, characterized in that: The connecting end (320) is provided with a protrusion (330) that is snap-fitted with the second mating through hole (212), and the end surface of the second mating through hole (212) blocks the protrusion (330) to enable the connecting end (320) to be snap-fitted with the first plate body (210).

7. The bridge connection device according to claim 6, characterized in that: The raised portion (330) is sleeved on the connecting end (320), and the raised portion (330) and the connecting end (320) are threadedly matched.