Bridge guardrail structure convenient for maintenance
The design of components such as support frames, limit frames, and limit grooves has solved the problems of bridge railing assembly and maintenance, achieving efficient positioning and convenient maintenance, and improving the installation efficiency and stability of bridge railings.
Patent Information
- Application Number
- CN202522613843.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-10
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-12-10
AI Technical Summary
Existing bridge railing structures suffer from poor positioning accuracy during assembly, cumbersome operation, and inconvenient maintenance.
The design incorporates components such as a support frame, a limit frame, a limit groove, a docking plate, and a limit bolt. The protective rod is embedded in the limit groove and connected to the limit bolt by the docking plate and fixed with screws, enabling quick installation and convenient maintenance.
It achieves precise assembly and positioning, efficient operation, and eliminates the need to disassemble the entire guardrail body during maintenance, simplifying the maintenance process and ensuring connection stability.
Smart Images

Figure CN224678519U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bridge railing technology, and in particular to a bridge railing structure that is easy to inspect and maintain. Background Technology
[0002] With the continuous advancement of national infrastructure construction and the implementation of the Belt and Road Initiative and the new urbanization strategy, the domestic bridge construction market has steadily grown, with diverse bridge types emerging, such as long-span cross-river and cross-sea bridges and dual-purpose road-rail bridges. In 2024, the related market size reached 1.2 trillion yuan and continues to expand. At the same time, the environments in which bridges are located are becoming increasingly complex, ranging from dense traffic on urban main roads to special conditions in deep mountain valleys, rivers, and seas. The demand for traffic safety is rising accordingly. Bridge railings, as core facilities ensuring the safety of people, vehicles, and the bridge structure, have become an important supporting direction in bridge engineering construction due to the adaptability and practicality of their structural design, which has also spurred technological research and innovation in related structures.
[0003] Existing traditional guardrails mostly adopt welding or integral fixed structures, which have poor positioning accuracy during assembly, are cumbersome and time-consuming to operate, and are inconvenient for maintenance.
[0004] Therefore, a bridge railing structure that is easy to inspect and maintain is proposed. Utility Model Content
[0005] In view of this, the present invention aims to provide a bridge railing structure that is easy to inspect and maintain, so as to solve or alleviate the technical problems existing in the prior art, or at least provide a beneficial alternative.
[0006] The technical solution of this utility model embodiment is implemented as follows: A bridge railing structure that is easy to maintain includes a main body and a protective mechanism disposed inside the main body. The main body includes: a support frame, a limiting frame disposed on one side of the support frame, a limiting groove disposed inside the limiting frame, a docking plate disposed on one side of the limiting frame, and a limiting bolt disposed on one side of the docking plate; the protective mechanism includes a protective rod disposed inside the limiting groove, screws disposed at both ends of the top of the protective rod, a docking sleeve disposed inside one end of the protective rod, and openings disposed on both sides of the top of the docking sleeve.
[0007] In some embodiments, the outer wall of the protective rod is provided with a reinforcing sleeve, and the reinforcing sleeve is provided with a reinforcing groove inside.
[0008] In some embodiments, extension plates are provided on both sides of the reinforcing sleeve, and supports are provided at the bottom and top of the reinforcing sleeve.
[0009] In some embodiments, a support plate is provided at the bottom of the limiting frame, and a hanging rod is provided at the top of the support frame.
[0010] In some embodiments, a fixing rod is provided at the top of the limiting frame, a fixing sleeve is provided at the top of the fixing rod, and a handrail is provided inside the fixing sleeve.
[0011] In some embodiments, the support frame is provided with a base plate at its bottom, a rubber sheet is provided at the bottom of the base plate, and a fixing bolt is provided at the top of the base plate.
[0012] The present invention has the following advantages due to the adoption of the above technical solution: A bridge railing structure that facilitates maintenance features a unique design. During installation, the guardrail is embedded in the limiting groove of the limiting frame. A connecting plate and limiting bolts securely connect the guardrail to the support frame, ensuring precise assembly and efficient operation. When multiple guardrails are connected, a connecting sleeve is fitted over the interface of two guardrails, and screws are tightened through the opening at the top of the connecting sleeve. During maintenance, only the limiting bolts and screws at the corresponding positions need to be loosened to remove the faulty guardrail from the limiting groove without disassembling the entire railing body, significantly simplifying the maintenance process. Furthermore, the coordinated structure of the components ensures the connection stability of the railing during use.
[0013] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description
[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0015] Figure 1 This is an overall structural diagram of the present invention; Figure 2 This is a structural diagram of the main mechanism of this utility model; Figure 3 This is a structural diagram of the limiting frame of this utility model; Figure 4 This is a structural diagram of the reinforcing sleeve of this utility model.
[0016] Figure label: 100. Main structure; 101. Support frame; 102. Limiting frame; 103. Limiting groove; 104. Connecting plate; 105. Limiting bolt; 106. Support plate; 107. Fixing rod; 108. Fixing sleeve; 109. Hanging rod; 110. Base plate; 111. Rubber sheet; 112. Fixing bolt; 113. Handrail; 200. Protective mechanism; 201. Protective rod; 202. Screw; 203. Connecting sleeve; 204. Opening; 205. Reinforcing sleeve; 206. Reinforcing groove; 207. Extension plate; 208. Bracket. Detailed Implementation
[0017] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.
[0018] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0019] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.
[0020] Example 1: like Figure 1-4 As shown, a bridge railing structure that is easy to maintain includes a main body 100 and a protective mechanism 200 installed inside the main body 100. The main body 100 includes: a support frame 101, a limiting frame 102 installed on one side of the support frame 101, a limiting groove 103 opened inside the limiting frame 102, a connecting plate 104 sleeved on one side of the limiting frame 102, and a limiting bolt 105 threaded to one side of the connecting plate 104. The protective mechanism 200 includes a protective rod 201 snapped into the limiting groove 103, screws 202 threaded to both ends of the top of the protective rod 201, a connecting sleeve 203 snapped into one end of the protective rod 201, and openings 204 opened on both sides of the top of the connecting sleeve 203.
[0021] In this embodiment, a reinforcing sleeve 205 is fitted onto the outer wall of the protective rod 201. A reinforcing groove 206 is provided inside the reinforcing sleeve 205. Extension plates 207 are installed on both sides of the reinforcing sleeve 205. Brackets 208 are installed at the bottom and top of the reinforcing sleeve 205. The reinforcing groove 206 can be precisely fitted to the outer wall of the protective rod 201 to limit its radial sway. The extension plates 207 on both sides of the reinforcing sleeve 205 can increase the contact area of the force-bearing structure and disperse the external force borne by the protective rod 201. The upper and lower brackets 208 will connect with the corresponding structures of the adjacent reinforcing sleeves 205 to form a longitudinal support chain to improve the deformation resistance of the protective rod assembly.
[0022] In this embodiment, a support plate 106 is installed at the bottom of the limiting frame 102, which can provide bottom support for the limiting frame 102 and prevent it from tilting under force to strengthen the connection rigidity with the support frame 101. A hanging rod 109 is installed at the top of the support frame 101, which can temporarily suspend maintenance tools and improve the convenience of tool access during installation or maintenance.
[0023] In this embodiment, a fixing rod 107 is installed on the top of the limiting frame 102, a fixing sleeve 108 is installed on the top of the fixing rod 107, a handrail 113 is sleeved inside the fixing sleeve 108, a base plate 110 is installed at the bottom of the support frame 101, a rubber sheet 111 is glued to the bottom of the base plate 110, and a fixing bolt 112 is threaded to the top of the base plate 110, which can increase the friction with the bridge base, buffer the impact of placement, and improve the initial stability of the support frame 101.
[0024] In this embodiment: During installation, the guard rod 201 is embedded in the limiting groove 103 of the limiting frame 102. The guard rod 201 and the support frame 101 are stably connected by the docking plate 104 and the limiting bolt 105. The assembly positioning is accurate and the operation is efficient. When multiple guard rods 201 are used together, the docking sleeve 203 is fitted inside the interface of two guard rods 201. The screw 202 is tightened after passing through the guard rod 201 and entering the opening 204 at the top of the docking sleeve 203. During maintenance, only the limiting bolt 105 and the screw 202 at the corresponding position need to be loosened to remove the faulty guard rod 201 from the limiting groove 103. There is no need to disassemble the entire guardrail body, which greatly simplifies the maintenance process. At the same time, the cooperative structure of each component also ensures the connection stability of the guardrail during use.
[0025] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.
Claims
1. A bridge railing structure that is easy to inspect and maintain, comprising a main body (100) and a protective mechanism (200) disposed inside the main body (100), characterized in that: The main body (100) includes: a support frame (101), a limiting frame (102) disposed on one side of the support frame (101), a limiting groove (103) disposed inside the limiting frame (102), a docking plate (104) disposed on one side of the limiting frame (102), and a limiting bolt (105) disposed on one side of the docking plate (104); and a protective mechanism (200) including a protective rod (201) disposed inside the limiting groove (103), screws (202) disposed at both ends of the top of the protective rod (201), a docking sleeve (203) disposed inside one end of the protective rod (201), and openings (204) disposed on both sides of the top of the docking sleeve (203).
2. The bridge railing structure for easy maintenance according to claim 1, characterized in that: The outer wall of the protective rod (201) is provided with a reinforcing sleeve (205), and the inside of the reinforcing sleeve (205) is provided with a reinforcing groove (206).
3. The bridge railing structure for easy maintenance according to claim 2, characterized in that: Extension plates (207) are provided on both sides of the reinforcing sleeve (205), and brackets (208) are provided at the bottom and top of the reinforcing sleeve (205).
4. The bridge railing structure for easy maintenance according to claim 3, characterized in that: The bottom of the limiting frame (102) is provided with a support plate (106), and the top of the support frame (101) is provided with a hanging rod (109).
5. A bridge railing structure for easy maintenance according to claim 4, characterized in that: The limiting frame (102) is provided with a fixing rod (107) at the top, and a fixing sleeve (108) is provided at the top of the fixing rod (107). A handrail (113) is provided inside the fixing sleeve (108).
6. A bridge railing structure for easy maintenance according to claim 5, characterized in that: The support frame (101) has a base plate (110) at the bottom, a rubber sheet (111) at the bottom of the base plate (110), and a fixing bolt (112) at the top of the base plate (110).