A type of bridge railing post installation lock
By combining fasteners and spring limit blocks, and using buffer components, the problems of complex and easily deformed bridge railing post connections are solved, achieving rapid installation, stable connection, and improved durability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG COMM CONSTR GRP CO LTD
- Filing Date
- 2025-08-20
- Publication Date
- 2026-07-14
AI Technical Summary
The existing connection method between bridge railing posts and railings is complex and prone to deformation, resulting in high maintenance costs, poor stability, and welding maintenance will damage the original structure.
The limiting block, which uses a snap-fit mechanism connected to a spring, works in conjunction with the snap-fit mechanism and the buffer assembly and limiting assembly to achieve quick assembly and disassembly and a secure connection. The buffer assembly absorbs collision energy and prevents deformation.
It enables rapid installation and disassembly of guardrails and posts, facilitates maintenance, enhances structural stability and durability, reduces maintenance costs, and improves connection reliability and sealing.
Smart Images
Figure CN224494867U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bridge construction technology, and in particular to the enhanced design of bridge guardrail installation structures. Background Technology
[0002] Bridge railing posts are vertical columnar elements used to support and secure railing systems. These posts are typically installed along the edges of bridges or roads, serving as the supporting structure for the railing system. The connection between the bridge railing and the posts is usually welded. If the railing is damaged, it needs to be cut and re-welded, which disrupts the original structure of both the posts and the railing, increasing maintenance costs and ultimately reducing maintenance efficiency.
[0003] Chinese patent document CN220685784U discloses a bridge railing post installation lock. In this technical solution, the bridge railing post is fixed to a lower lock structure. The lower lock structure includes a connecting plate and upright plates on both sides of the bottom surface of the connecting plate. Below the connecting plate and between the two upright plates, there are two inclined blocks with opposite inclination directions. The inclined blocks include a first inclined block and a second inclined block. The top surfaces of the first and second inclined blocks are both inclined surfaces, and the inclination directions are downward from left to right and downward from right to left, respectively. The inclined surfaces are uniformly provided with arc grooves. A fixing rod is provided between the two upright plates, and the fixing rod is limited within the arc groove.
[0004] However, the above-mentioned device relies on hammering the wedge to move the component, which is complicated to operate and the mechanical force can easily cause the wedge or I-beam to deform, affecting the stability of the fixation. Utility Model Content
[0005] To overcome the shortcomings of the prior art, a bridge railing post mounting lock is provided.
[0006] This utility model is achieved through the following technical solution: a bridge railing post mounting lock, comprising a bridge component and mounting lock components. The bridge component includes a post and a railing inserted into the side of the post. The mounting lock components are embedded in pairs on both sides of the railing. Each mounting lock component includes: a snap fastener, one side of which is provided with a mounting seat, and the other side is provided with a limiting block that snaps onto the railing. The limiting block is elastically connected to the snap fastener by a spring. Two symmetrically arranged connecting frames, one end of each connecting frame is connected to the mounting seat, and the other end is detachably connected by a fixing bolt. A limiting component is sleeved on the outer side of the connecting frame.
[0007] The aforementioned device replaces hammering with a combination of snap fasteners and springs for fixing. The automatic rebound characteristic of the springs allows the limiting blocks to be precisely engaged in the guardrail limiting slots, making operation simple and the fixation more secure. The design of the buffer spring can absorb some of the impact energy, reduce the direct impact force on the column, and improve the structural durability. The limiting components further prevent the connecting frame from shifting, enhancing overall stability.
[0008] In a preferred embodiment of this utility model, a buffer assembly is provided on the side of the column. The buffer assembly includes a buffer spring, a connecting plate, and a protective plate. The buffer spring is fixed to the side of the column. The connecting plate covers the outside of the buffer spring. The protective plate covers the outside of the connecting plate.
[0009] In a preferred embodiment of this utility model, multiple buffer springs are provided and are evenly distributed along the length direction of the side of the column.
[0010] In a preferred embodiment of this utility model, the outer side of the mounting base is covered with a sealing gasket.
[0011] In a preferred embodiment of the present invention, the side of the column is provided with a movable fixing member for fixing and installing the locking assembly; the movable fixing member includes a fixing frame, a baffle and a mounting bolt; the fixing frame is provided with a fixing hole for the baffle to pass through, the baffle passes through the fixing hole and abuts against the side of the mounting base away from the buckle; one end of the baffle is connected to the column through the mounting bolt, and the other end is provided with a limiting handle that abuts against the fixing frame.
[0012] In a preferred embodiment of the present invention, the limiting component includes a clamp, a friction pad, and a connecting bolt; the clamp is sleeved on the outside of the connecting frame, and a friction pad is provided on its inner side; the end of the clamp is locked by the connecting bolt.
[0013] In a preferred embodiment of this utility model, a limiting plate is provided on the outer side of the connecting frame to limit the longitudinal displacement of the clamp.
[0014] In a preferred embodiment of this utility model, a base is fixed to the bottom of the column; a guide sleeve matching the guardrail is provided on the side of the column.
[0015] In a preferred embodiment of this utility model, the side wall of the guardrail is provided with a limiting groove that fits into the limiting block.
[0016] In a preferred embodiment of this utility model, the side of the fastener closest to the guardrail is arc-shaped, and its curvature matches that of the guardrail.
[0017] Compared with the prior art, the present invention has the following beneficial effects:
[0018] A bridge railing post mounting lock is provided. The mounting lock components are embedded in pairs on both sides of the railing. The limit block connected by a spring cooperates with the buckle to realize the quick assembly and disassembly of the railing and the post. At the same time, the detachable design of the connecting frame facilitates later maintenance and replacement.
[0019] Furthermore, the buffer assembly absorbs collision energy through a multi-layered structure, reducing impact damage to the posts and guardrails and extending their service life.
[0020] Furthermore, the evenly distributed buffer sheets ensure that the force on the side of the column is balanced, avoiding the risk of local deformation or breakage.
[0021] Furthermore, the sealing gasket covers the mounting base, effectively preventing moisture and dust from entering the lock and preventing parts from rusting or jamming.
[0022] Furthermore, the movable fastener enables quick positioning and locking of the locking assembly, balancing ease of installation with structural stability.
[0023] Furthermore, the limiting component uses friction to lock the connecting bracket, preventing the locking component from loosening due to vibration or external force.
[0024] Furthermore, the limiting plate prevents the clamp from shifting along the length of the connecting frame, ensuring the long-term effectiveness of the limiting component.
[0025] Furthermore, the base increases the contact area between the column and the ground, and the guide sleeve ensures precise insertion of the guardrail, improving structural stability.
[0026] Furthermore, the limiting groove and the limiting block fit together to prevent the guardrail from sliding laterally during a collision, thus enhancing the reliability of the connection.
[0027] Furthermore, the curved fasteners fit snugly against the surface of the guardrail, reducing assembly gaps and improving the sealing performance and load-bearing efficiency of the locking system.
[0028] Other features and advantages of this utility model will be disclosed in detail in the following specific embodiments and accompanying drawings. Attached Figure Description
[0029] The present invention will be further described below with reference to the accompanying drawings:
[0030] Figure 1 This is a schematic diagram of the structure of a bridge railing post for installing a locking buckle according to the present invention;
[0031] Figure 2 This is a structural schematic diagram of a bridge railing post installation lock from another angle according to the present invention.
[0032] Figure 3 This is an exploded structural diagram of the buffer component of this utility model;
[0033] Figure 4 This is an exploded structural diagram of the mounting latch assembly of this utility model;
[0034] Figure 5 This is a partially exploded structural diagram of a bridge railing post with a locking mechanism according to the present invention.
[0035] The annotations in the attached figures are explained as follows:
[0036] Bridge component 1, base 101, column 102, mounting groove 1021, guardrail 103, limiting groove 1031, guide sleeve 104, mounting lock component 2, buckle 201, limiting block 202, spring 203, mounting seat 204, sealing gasket 205, connecting frame 206, fixing bolt 207, limiting component 3, clamp 301, friction pad 302, connecting bolt 303, limiting plate 304, buffer component 4, buffer spring 401, connecting plate 402, protective plate 403, movable fixing component 5, fixing frame 501, fixing hole 5011, baffle 502, limiting handle 5021, mounting bolt 503. Detailed Implementation
[0037] The technical solutions of the present utility model will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of the present utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of the present utility model.
[0038] In the following description, terms such as “inner,” “outer,” “upper,” “lower,” “left,” and “right” are used only to facilitate the description of the embodiments and simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0039] like Figures 1 to 5 As shown, this utility model provides a bridge railing post installation lock, aiming to solve the problems of inconvenient installation and disassembly, high maintenance costs, weak impact resistance, and easy loosening of connections in traditional railings. The solution mainly includes a bridge component 1, an installation lock component 2, a limiting component 3, and a buffer component 4.
[0040] The core component of bridge assembly 1 is the column 102. A base 101 with an expanded ground contact area is fixed to the bottom of the column 102 to effectively prevent column settlement. A guide sleeve 104 is provided on the side of the column 102. The central axis of the guide sleeve 104 is precisely coaxial with the insertion path of the guardrail 103, ensuring that the guardrail 103 can be inserted in a straight line and avoiding stress concentration caused by installation misalignment. The guardrail 103 is inserted into the side of the column 102, and a specific-shaped limiting groove 1031 is formed on its side wall.
[0041] The mounting latch assemblies 2 are installed in pairs on both sides of the guardrail 103, and are the core component for quick assembly and disassembly. Each mounting latch assembly 2 includes a latch 201 and a connecting bracket 206. One side of the latch 201 has a mounting base 204, and the other side has a limiting block 202 that can be latched onto the guardrail 103. The side of the latch 201 closest to the guardrail 103 is designed to be arc-shaped, with its curvature precisely matching the outer contour of the guardrail 103, increasing the contact area, distributing the locking force evenly, reducing assembly gaps, improving sealing and load-bearing efficiency, and avoiding localized crushing caused by point contact. The post 102 has a mounting groove 1021 for installing the latch 201.
[0042] The limiting block 202 is elastically connected to the buckle 201 via a spring 203. Specifically, one end of the spring 203 is fixed to the inner cavity of the buckle 201, and the other end is connected to the limiting block 202, allowing the buckle to adapt to the dimensional errors of the guardrail. The outer side of the mounting base 204 is covered with a flexible sealing gasket 205, effectively filling the gap between the mounting base 204 and the guardrail 103, forming a physical barrier to prevent moisture and dust intrusion, and to prevent internal parts from rusting or jamming. Its elasticity also allows it to adapt to the working vibrations of the buckle assembly. Two symmetrically arranged connecting brackets 206 are connected at one end to the mounting base 204, and the other end is detachably connected via fixing bolts 207, forming a stable support structure that significantly improves the overall load-bearing capacity. This detachable design greatly facilitates later maintenance and replacement.
[0043] The limiting component 3 is sleeved on the outside of the connecting frame 206 to prevent the locking assembly from loosening due to vibration or external force. It includes a clamp 301, a friction pad 302, a connecting bolt 303, and a limiting plate 304. The clamp 301 is sleeved on the outside of the connecting frame 206, and its inner side is provided with a friction pad 302 to increase the roughness of the contact surface. The end of the clamp 301 is locked by the connecting bolt 303. Tightening the connecting bolt 303 generates a preload force that causes the clamp 301 to contract radially. A strong frictional self-locking effect is generated between the friction pad 302 and the connecting frame 206, effectively suppressing longitudinal sliding. A limiting plate 304 is vertically welded to the outside of the connecting frame 206, forming a physical stop that restricts the clamp 301 from moving longitudinally along the axial direction of the connecting frame 206, ensuring that the limiting component 3 remains effective under vibration conditions and maintaining the reliability of the friction lock.
[0044] A buffer assembly 4 is disposed on the side of the column 102 to absorb impact energy and protect the column and guardrail. It includes a protective plate 403, a connecting plate 402, and buffer springs 401. The protective plate 403 is located on the outermost side, directly bearing the impact and dispersing pressure. The connecting plate 402 is fitted inside the protective plate 403, transferring the impact force to the buffer springs 401. The buffer springs 401 are fixed to the side of the column 102; the connecting plate 402 covers the outside of the buffer springs 401; the protective plate 403 covers the outside of the connecting plate 402, and multiple buffer springs 401 are evenly distributed at equal intervals along the length of the side of the column 102. When impacted, the protective plate 403 disperses the pressure to the connecting plate 402, and the connecting plate 402 transfers the load to the multiple buffer springs 401. The springs convert kinetic energy into elastic potential energy through elastic deformation, absorbing and dissipating the energy and preventing stress concentration on the surface of the column 102. Multiple evenly distributed independent spring plates synchronously share the impact load, ensuring balanced force on the side of the column, significantly improving the overall deformation resistance of the buffer system, effectively reducing the risk of local deformation or breakage, and extending service life.
[0045] The movable fixing component 5 is located on the side of the column 102 and is used for quick positioning and locking of the mounting latch assembly 2. It includes a fixing bracket 501, a baffle 502, a mounting bolt 503, and a limiting handle 5021. The fixing bracket 501 is fixed to the column 102 and has a fixing hole 5011. The baffle 502 passes through the fixing hole 5011 of the fixing bracket 501 and abuts against the side of the mounting base 204 away from the latch 201 (i.e., the outermost side). One end of the baffle 502 is fixedly connected to the column 102 via the mounting bolt 503, and the other end has a limiting handle 5021 that abuts against the side of the fixing bracket 501. By holding the limiting handle 5021, the baffle 502 is inserted into the fixing hole 5011, thus fixing the mounting latch assembly 2. Furthermore, the limiting handle 5021 facilitates the removal of the movable fixing component 5, improving the ease of installation.
[0046] How to use and how to work this device:
[0047] Step 1: Guardrail installation guide: Insert the guardrail 103 into the guide sleeve 104 along the side of the post 102. The guide sleeve 104 and the guardrail 103 are designed to be coaxial with the insertion path to ensure that the guardrail 103 is inserted in a straight line and accurately, avoiding stress concentration caused by installation misalignment.
[0048] Step 2: Locking assembly assembly: The buckle 201 of the mounting buckle assembly 2 is attached to the outside of the guardrail 103. The spring 203 on the inside of the buckle 201 pushes the limiting block 202 into the limiting groove 1031 on the side wall of the guardrail 103. The initial limiting is achieved by elastically adapting to the size error of the guardrail 103. The sealing gasket 205 on the outside of the mounting base 204 is attached to the inner wall of the post 102 to form a sealed protection.
[0049] Step 3: Fixing and locking the mounting base: Pass the baffle 502 through the fixing hole 5011 of the fixing bracket 501, so that one end of it abuts against the outside of the mounting base 204, and the other end is fixedly connected to the column 102 through the mounting bolt 503. The displacement of the baffle 502 is restricted by the limit handle 5021 to form a lock.
[0050] Step 4: Assembly and fastening of the connecting frame: Connect one end of the symmetrically arranged connecting frame 206 to the mounting base 204, and the other end is detachably connected by the fixing bolt 207 to form a stable support structure; then, the clamp 301 is sleeved on the outside of the connecting frame 206, the friction pad 302 increases the roughness of the contact surface, and the clamp 301 is pre-tightened by the connecting bolt 303 to suppress the longitudinal sliding of the connecting frame 206 by the friction self-locking effect, and the limiting plate 304 further restricts the axial displacement of the clamp 301.
[0051] Step 5: Install the buffer assembly: Attach the connecting plate 402 of the buffer assembly 4 to the side of the column 102. Distribute multiple buffer springs 401 evenly along the length of the column 102 and connect them to the side of the connecting plate 402 closest to the column 102. Assemble the protective plate 403 on the outside of the connecting plate 402. Through the elastic support of the buffer springs 401, maintain a preset gap between the protective plate 403 and the surface of the column 102, thus completing the installation of the buffer assembly 4.
[0052] The above are merely specific embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Those skilled in the art should understand that this utility model includes, but is not limited to, the contents described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of this utility model will be included within the scope of the claims.
Claims
1. A bridge railing post mounting latch, comprising a bridge assembly (1) and a mounting latch assembly (2), wherein the bridge assembly (1) includes a post (102) and a railing (103) inserted into the side of the post (102); characterized in that: The mounting latch assemblies (2) are fitted in pairs on both sides of the guardrail (103). Each mounting latch assembly (2) includes: a latch (201) with a mounting base (204) on one side and a limiting block (202) on the other side that is latched onto the guardrail (103). The limiting block (202) is elastically connected to the latch (201) by a spring (203); two symmetrically arranged connecting frames (206), one end of each connecting frame (206) is connected to the mounting base (204), and the other end is detachably connected by a fixing bolt (207); a limiting assembly (3) is sleeved on the outside of the connecting frame (206).
2. The bridge railing post installation lock according to claim 1, characterized in that: The side of the column (102) is provided with a buffer assembly (4), which includes a buffer spring (401), a connecting plate (402) and a protective plate (403); the buffer spring (401) is fixed to the side of the column (102); the connecting plate (402) covers the outside of the buffer spring (401); and the protective plate (403) covers the outside of the connecting plate (402).
3. The bridge railing post installation lock according to claim 2, characterized in that: Multiple buffer springs (401) are provided and are evenly distributed along the length of the side of the column (102).
4. The bridge railing post installation lock according to claim 1, characterized in that: The outer side of the mounting base (204) is covered with a sealing gasket (205).
5. A bridge railing post installation lock according to claim 1, characterized in that: The side of the column (102) is provided with a movable fixing member (5) for fixing and installing the locking assembly (2); the movable fixing member (5) includes a fixing frame (501), a baffle (502) and a mounting bolt (503); the fixing frame (501) is provided with a fixing hole (5011) for the baffle (502) to pass through, the baffle (502) passes through the fixing hole (5011) and abuts against the side of the mounting base (204) away from the buckle (201); one end of the baffle (502) is connected to the column (102) through the mounting bolt (503), and the other end is provided with a limiting handle (5021) that abuts against the fixing frame (501).
6. The bridge railing post installation lock according to claim 1, characterized in that: The limiting component (3) includes a clamp (301), a friction pad (302), and a connecting bolt (303); the clamp (301) is sleeved on the outside of the connecting frame (206), and the friction pad (302) is provided on its inner side; the end of the clamp (301) is locked by the connecting bolt (303).
7. A bridge railing post installation lock according to claim 6, characterized in that: The connecting frame (206) is provided with a limiting plate (304) on the outside to limit the longitudinal displacement of the clamp (301).
8. The bridge railing post installation lock according to claim 1, characterized in that: The bottom of the column (102) is fixed with a base (101); the side of the column (102) is provided with a guide sleeve (104) that matches the guardrail (103).
9. A bridge railing post installation lock according to claim 1, characterized in that: The side wall of the guardrail (103) is provided with a limiting groove (1031) that fits into the limiting block (202).
10. A bridge railing post installation lock according to claim 1, characterized in that: The side of the fastener (201) closest to the guardrail (103) is arc-shaped, and its curvature matches that of the guardrail (103).