A protective fence for municipal roads and bridge engineering

Abstract

The utility model relates to municipal road technical field, concretely is a guard bar for municipal road and bridge engineering, including first guard bar, both sides of first guard bar are connected with second guard bar through quick release mechanism, both sides of second guard bar are connected with third guard bar through quick release mechanism, the utility model discloses quick assembly and disassembly of multiple guard bars are realized through quick release mechanism, and the preliminary positioning is completed when installing by the spring pre -tightening and makes the clamping rod embed the card slot, again through the threaded sleeve fastening forms double locking structure, effectively promotes the impact strength after connecting, can resist the lateral impact force of vehicle impact, only need to loosen the threaded sleeve, compress the spring when disassembling can be quickly disassembled, be applicable to the road reconstruction, temporary isolation, bridge protection etc. Multiple scenes, significantly improve the construction efficiency, and multiple guard bars can be extended combination, form flexible variable protection system, and be convenient for later maintenance or repeatedly dismounting and reuse, improve scene adaptation ability and material utilization.

Description

Technical Field

[0001] This utility model relates to a protective railing for municipal roads and bridge engineering, belonging to the field of municipal road technology. Background Technology

[0002] Guardrails are important facilities for ensuring traffic order and pedestrian safety. They are mainly composed of posts, crossbars, and railings, and are made of steel, aluminum alloy, or composite materials. They have high strength, corrosion resistance, and impact resistance. Through reasonable height and spacing design, they prevent vehicles from losing control and running off the road or bridge, avoiding serious accidents such as falling off bridges. At the same time, they prevent pedestrians from crossing the road at will and regulate traffic behavior.

[0003] Existing guardrails mostly use fixed connection methods, which have defects such as cumbersome installation and disassembly, inability to quickly expand or adjust the layout, and insufficient impact resistance. They are difficult to meet the needs of flexible disassembly and assembly, efficient combination and safety and reliability of guardrails in scenarios such as road reconstruction and expansion, temporary isolation and bridge protection. In addition, traditional connection structures require complex tools or on-site welding, resulting in long construction cycles, high maintenance costs, and safety hazards caused by loose connections during vehicle collisions.

[0004] Therefore, it is urgent to improve the guardrails used in municipal road and bridge projects to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of this utility model is to provide a guardrail for municipal roads and bridge engineering. A quick-release mechanism enables rapid assembly and disassembly of multiple guardrails. During installation, a spring pre-tensioning mechanism allows the locking rod to be inserted into the slot for initial positioning, followed by tightening with a threaded sleeve to form a double-locking structure. This effectively improves the impact resistance after connection, resisting the lateral impact force of vehicle collisions. Disassembly only requires loosening the threaded sleeve and compressing the spring for quick separation. It is suitable for various scenarios such as road reconstruction and expansion, temporary isolation, and bridge protection, significantly improving construction efficiency. Multiple guardrails can be expanded and combined to form a flexible and adaptable protection system, facilitating later maintenance or repeated disassembly and reuse, enhancing scenario adaptability and material utilization.

[0006] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0007] A guardrail for municipal roads and bridges includes a first guardrail, with a second guardrail connected to both sides of the first guardrail via two quick-release mechanisms, and a third guardrail connected to both sides of the second guardrail away from the first guardrail via two quick-release mechanisms.

[0008] The quick-release mechanism includes a first connecting plate and a second connecting plate. A connecting block is fixedly installed on the first connecting plate. The connecting block has several evenly distributed slots and through holes at both ends. A cross mounting block is fixedly installed on the second connecting plate. A sliding groove is formed at both ends of the cross mounting block. Two through slots are formed on the inner sidewall of the sliding groove, and the two through slots are connected to the sliding groove. A spring is installed inside the sliding groove. One end of the spring is fixedly connected to the inner bottom surface of the sliding groove, and the other end of the spring is fixedly connected to a sliding rod. The sliding rod is slidably disposed inside the sliding groove. A locking rod is fixedly installed at the end of the sliding rod near the spring. The two ends of the locking rod abut against the two slots respectively, and the end of the sliding rod away from the spring passes through the through hole and is threadedly connected to a threaded sleeve. The threaded sleeve abuts against the connecting block.

[0009] Preferably, the first guardrail, the second guardrail, and the third guardrail all include a first support post, a second support post is provided on one side of the first support post, the first support post and the second support post are connected by a plurality of evenly distributed horizontal bars, vertical bars are installed on the plurality of horizontal bars, and elastic protective pads are installed on the inner sides of the plurality of horizontal bars and the vertical bars.

[0010] Preferably, both first connecting plates are bolted to the second support column, and both second connecting plates are bolted to the first support column.

[0011] Preferably, a connecting rod is fixedly installed on the vertical pole, the connecting rod is set on the first guardrail, and a first fixing block and a second fixing block are fixedly installed on the connecting rod. A first pull ring is hinged to both ends of the first fixing block. A first cable is hooked to the first pull ring by a hook. A second pull ring is hooked to the end of the first cable away from the first pull ring by a hook. The second pull ring is hinged to the second guardrail.

[0012] Preferably, both ends of the second fixing block are hinged with a third pull ring, a second cable is hooked to the third pull ring via a hook, and a fourth pull ring is hooked to the end of the second cable away from the third pull ring via a hook. The fourth pull ring is hinged to the third guardrail.

[0013] Preferably, the lower ends of the first support column and the second support column are each equipped with a fixed base, and the fixed base is equipped with a plurality of mounting plates, the mounting plates having mounting holes.

[0014] Preferably, warning lights are installed at the upper ends of several first support columns, several second support columns, and the connecting rod.

[0015] Preferably, both the first cable and the second cable are made of multiple high-strength steel wires twisted together.

[0016] This utility model has at least the following beneficial effects:

[0017] 1. This utility model enables the rapid assembly and disassembly of multiple guardrails through a quick-release mechanism. During installation, the spring pre-tensioning allows the locking rod to be embedded into the slot for initial positioning, and then the threaded sleeve is tightened to form a double locking structure, which effectively improves the impact resistance after connection and can withstand the lateral impact force of vehicle collisions. During disassembly, only the threaded sleeve needs to be loosened and the spring compressed for quick separation. It is suitable for multiple scenarios such as road reconstruction and expansion, temporary isolation, and bridge protection, significantly improving construction efficiency. Multiple guardrails can be expanded and combined to form a flexible and variable protection system, and are easy to maintain or repeatedly disassemble and reuse, improving the adaptability to different scenarios and the utilization rate of materials. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0019] Figure 1 A schematic diagram of the overall structure of this utility model;

[0020] Figure 2 Partial structural schematic diagram provided for this utility model Figure 1 ;

[0021] Figure 3 Partial structural schematic diagram provided for this utility model Figure 2 ;

[0022] Figure 4 A schematic diagram of the quick-release mechanism provided by this utility model;

[0023] Figure 5 Exploded view of the quick-release mechanism provided by this utility model;

[0024] Figure 6 This invention provides an explosion diagram of the first protective railing.

[0025] Figure 7 A schematic diagram of the installation of the first and second guardrails provided for this utility model.

[0026] In the diagram, 1. First guardrail; 2. Second guardrail; 3. Third guardrail; 4. Quick-release mechanism; 41. First connecting plate; 42. Second connecting plate; 43. Connecting block; 44. Slot; 45. Through hole; 46. Cross mounting block; 47. Slide groove; 48. Through groove; 49. Spring; 410. Slide rod; 411. Locking rod; 412. Threaded sleeve; 5. First support column; 6. Second support column; 7. Horizontal bar; 8. Vertical bar; 9. Elastic protective pad; 10. Connecting rod; 11. First fixing block; 12. Second fixing block; 13. First pull ring; 14. First cable; 15. Second pull ring; 16. Third pull ring; 17. Second cable; 18. Fourth pull ring; 19. Fixed base; 20. Mounting plate; 21. Mounting hole; 22. Warning light. Detailed Implementation

[0027] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0028] like Figures 1-7 As shown, the guardrail for municipal roads and bridges provided in this embodiment includes a first guardrail 1. The two sides of the first guardrail 1 are connected to a second guardrail 2 through two quick-release mechanisms 4. The two second guardrails 2 away from the first guardrail 1 are connected to a third guardrail 3 through two quick-release mechanisms 4.

[0029] The quick-release mechanism 4 includes a first connecting plate 41 and a second connecting plate 42. A connecting block 43 is fixedly installed on the first connecting plate 41. The connecting block 43 has several evenly distributed slots 44, and both ends of the connecting block 43 have through holes 45. A cross mounting block 46 is fixedly installed on the second connecting plate 42. Both ends of the cross mounting block 46 have sliding grooves 47. The inner sidewall of the sliding groove 47 has two through slots 48, which are connected to the sliding groove 47. A spring 49 is installed inside the sliding groove 47. One end of the spring 49 is fixedly connected to the inner bottom surface of the sliding groove 47, and the other end of the spring 49 is fixedly connected to a sliding rod 410. The slide bar 410 is slidably disposed inside the slide groove 47, and a locking rod 411 is fixedly installed at the end of the slide bar 410 near the spring 49. The two ends of the locking rod 411 abut against the two locking grooves 44 respectively, and the end of the slide bar 410 away from the spring 49 passes through the through hole 45 and is threadedly connected to a threaded sleeve 412. The threaded sleeve 412 abuts against the connecting block 43. The two sides of the first guardrail 1 are connected to the second guardrail 2 through the quick-release mechanism 4. The outer side of the second guardrail 2 is then connected to the third guardrail 3 in the same way, forming an expandable protective unit combination. In the quick-release mechanism 4, during installation, the first connecting plate 41 and the second connecting plate 42 are first fixed to the adjacent guardrails respectively. Align the cross mounting block 46 with the connecting block 43. Then, press the slide rods 410 at both ends of the cross mounting block 46. The slide rods 410 slide inside the slide groove 47, compressing the spring 49. The spring 49 is compressed, storing elastic potential energy, which in turn drives the two ends of the locking rod 411 to move along the through groove 48. When the cross mounting block 46 is engaged with the connecting block 43, release the slide rods 410. The elastic force of the spring 49 pushes the slide rods 410, causing the locking rod 411 to embed into the slot 44, thus achieving initial engagement and positioning. Subsequently, the end of the slide rod 410 passes through the through hole 45 on the connecting block 43, and the threaded sleeve 412 is tightened to abut against the connecting block 43, forming a "spring" engagement. The dual locking structure of "spring pre-tensioning + threaded fastening" ensures the impact resistance of the guardrail after connection, thus effectively resisting the lateral impact force during vehicle collision. During disassembly, simply unscrew the threaded sleeve 412 in the opposite direction, push the slide rod 410 to compress the spring 49, causing the locking rod 411 to disengage from the locking groove 44, and at the same time, the end of the slide rod 410 to disengage from the through hole 45 on the connecting block 43, thereby quickly disassembling each guardrail. It is suitable for road reconstruction and expansion, temporary isolation, bridge protection and other scenarios, combining construction efficiency and safety reliability, while also facilitating later maintenance or repeated disassembly and reuse, thus significantly improving the installation efficiency and scenario adaptability of guardrails in municipal engineering.

[0030] Furthermore, such as Figures 1-7As shown, the first guardrail 1, the second guardrail 2, and the third guardrail 3 all include a first support post 5. A second support post 6 is provided on one side of the first support post 5. Two first connecting plates 41 are bolted to the second support post 6, and two second connecting plates 42 are bolted to the first support post 5. The first support post 5 and the second support post 6 are connected by a number of evenly distributed horizontal bars 7. Vertical bars 8 are installed on the horizontal bars 7, and elastic protective pads 9 are installed on the inner sides of the horizontal bars 7 and the vertical bars 8. The first support column 5 and the second support column 6 of the railing 3 are connected to the adjacent railings by bolting the first connecting plate 41 and the second connecting plate 42 of the quick-release mechanism 4. The two are connected by the horizontal bar 7 to form a frame structure. The elastic protective pads 9 on the inner side of the horizontal bar 7 and the vertical bar 8 can buffer the impact force. In this way, the overall rigidity of the railing is enhanced by the "double column frame + horizontal bar and vertical bar". The elastic protective pad 9 absorbs the impact energy by material deformation, reduces collision damage, and thus improves the safety protection performance. At the same time, it is also easy to achieve modular assembly and disassembly through the quick-release mechanism 4, thereby improving the practicality of the railing.

[0031] Furthermore, such as Figures 1-7As shown, a connecting rod 10 is fixedly installed on the vertical rod 8. The connecting rod 10 is set on the first guardrail 1, and a first fixing block 11 and a second fixing block 12 are fixedly installed on the connecting rod 10. Both ends of the first fixing block 11 are hinged with a first pull ring 13. A first cable 14 is hooked to the first pull ring 13. The end of the first cable 14 away from the first pull ring 13 is hooked with a second pull ring 15. The second pull ring 15 is hinged to the second guardrail 2. Both ends of the second fixing block 12 are hinged with a first fixing block 11 and a second fixing block 12. The third pull ring 16 has a hook to which a second cable 17 is attached. The end of the second cable 17 furthest from the third pull ring 16 is hooked to a fourth pull ring 18, which is hinged to the third guardrail 3. Both the first cable 14 and the second cable 17 are made of multiple high-strength steel wires twisted together. The connecting rod 10 on the vertical post 8 is connected to the first cable 14 via hooks to the first pull rings 13 hinged at both ends of the first fixing block 11. The hook at the other end of the first cable 14 is attached to the second guardrail. On the second pull ring 15 of 2, the third pull ring 16, which is hinged at both ends of the second fixing block 12, is connected to the second cable 17 via a hook. The other end of the second cable 17 is hooked onto the fourth pull ring 18, which is hinged to the third guardrail 3, forming a flexible connection system. The first cable 14 and the second cable 17, which are made of high-strength steel wire, are horizontally connected into a whole. When a section of the guardrail is impacted, the first cable 14 and the second cable 17 absorb the impact energy through elastic deformation and distribute the force to the adjacent guardrail units through several pull ring hinge nodes, avoiding localized damage. The hook connection method facilitates the quick assembly and disassembly of the first cable 14 and the second cable 17. With the quick-release mechanism 4, the guardrail can be modularly assembled. At the same time, the flexible characteristics of the first cable 14 and the second cable 17 can adapt to slight terrain subsidence or temperature deformation, thereby improving the overall stability and environmental adaptability of the guardrail. It is suitable for safety protection scenarios of municipal roads and bridges, and has both rigid support and flexible buffer functions.

[0032] Furthermore, such as Figures 1-7 As shown, both the first support column 5 and the second support column 6 have fixed bases 19 installed at their lower ends. Several mounting plates 20 are installed on the fixed bases 19, and mounting holes 21 are opened on the mounting plates 20. The fixed bases 19 at the lower ends of the first support column 5 and the second support column 6 can be fixed to the concrete foundation of municipal roads or bridges by bolts or anchor bolts through the mounting plates 20 and the mounting holes 21. The distributed fixing of multiple mounting plates 20 enhances the pull-out resistance and overturning resistance, thereby ensuring that the guardrail remains stable under loads such as vehicle impacts or strong winds, thus providing reliable bottom support for the overall structure.

[0033] Furthermore, such as Figures 1-7As shown, warning lights 22 are installed at the upper ends of several first support columns 5, several second support columns 6, and connecting rods 10. The warning lights 22 at the upper ends of several first support columns 5, second support columns 6, and connecting rods 10 (the warning lights 22 are existing technology and will not be described in detail in this embodiment) can significantly improve the visibility of the guardrail at night or in low visibility environments by flashing or keeping the lights on, warning passing vehicles and pedestrians to pay attention to road conditions, reducing the risk of collision, and are especially suitable for curves, bridges, or construction sections, thereby enhancing the safety warning function of municipal roads and bridge projects.

[0034] like Figures 1-7 As shown in this embodiment, the principle of the guardrail for municipal roads and bridges is as follows:

[0035] During installation, the first connecting plate 41 and the second connecting plate 42 are first fixed to the adjacent guardrails respectively. The cross mounting block 46 is aligned with the connecting block 43. At this time, the slide rods 410 at both ends of the cross mounting block 46 are pressed. The slide rods 410 slide and compress the spring 49 inside the slide groove 47. The spring 49 is compressed and stores elastic potential energy, which in turn drives the two ends of the locking rod 411 to move along the through groove 48. When the cross mounting block 46 is locked into the connecting block 43, the slide rod 410 is released. The elastic force of the spring 49 pushes the slide rod 410 to drive the locking rod 411 to be embedded in the slot 44, thereby achieving initial locking and positioning. Then, the end of the slide rod 410 passes through the through hole 45 on the connecting block 43 and is tightened to make it abut against the connecting block 43, forming a double locking structure of "spring preload + thread fastening", which ensures the impact resistance of the guardrail after connection and can effectively resist the lateral impact force when the vehicle hits.

[0036] During disassembly, simply unscrew the threaded sleeve 412 in the opposite direction, push the slide bar 410 to compress the spring 49, causing the locking rod 411 to disengage from the slot 44, while the end of the slide bar 410 disengages from the through hole 45 on the connecting block 43, thus allowing for quick disassembly of each guardrail.

[0037] If certain terms are used in the specification and claims to refer to specific components, those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" as used throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error.

[0038] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes that element.

[0039] The foregoing description illustrates and describes several preferred embodiments of the present invention. However, as previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A guard rail for municipal road and bridge works comprising a first guard rail (1), characterised in that: The first guardrail (1) is connected to the second guardrail (2) on both sides by two quick-release mechanisms (4), and the two second guardrails (2) are connected to the third guardrail (3) on both sides away from the first guardrail (1) by two quick-release mechanisms (4); The quick-release mechanism (4) includes a first connecting plate (41) and a second connecting plate (42). A connecting block (43) is fixedly installed on the first connecting plate (41). The connecting block (43) has several evenly distributed slots (44) and through holes (45) at both ends. A cross mounting block (46) is fixedly installed on the second connecting plate (42). A sliding groove (47) is provided at both ends of the cross mounting block (46). Two through slots (48) are provided on the inner sidewall of the sliding groove (47). The two through slots (48) are connected to the sliding groove (47). The interior of the sliding groove (47) is provided with... A spring (49) is fixedly connected at one end to the inner bottom surface of the slide groove (47), and a slide rod (410) is fixedly connected at the other end of the spring (49). The slide rod (410) is slidably disposed inside the slide groove (47), and a locking rod (411) is fixedly installed at the end of the slide rod (410) near the spring (49). The two ends of the locking rod (411) abut against the two locking slots (44) respectively, and the end of the slide rod (410) away from the spring (49) passes through the through hole (45) and is threadedly connected to a threaded sleeve (412). The threaded sleeve (412) abuts against the connecting block (43).

2. The guardrail for municipal road and bridge works as defined in claim 1, wherein: The first guardrail (1), the second guardrail (2) and the third guardrail (3) all include a first support post (5), and a second support post (6) is provided on one side of the first support post (5). The first support post (5) and the second support post (6) are connected by a number of evenly distributed horizontal bars (7). Vertical bars (8) are installed on the number of horizontal bars (7), and elastic protective pads (9) are installed on the inner side of the number of horizontal bars (7) and the vertical bars (8).

3. The guardrail for municipal road and bridge works as defined in claim 2, wherein: Both of the first connecting plates (41) are bolted to the second support column (6), and both of the second connecting plates (42) are bolted to the first support column (5).

4. The guardrail for municipal road and bridge works as defined in claim 3, wherein: A connecting rod (10) is fixedly installed on the vertical rod (8). The connecting rod (10) is set on the first guardrail (1), and a first fixing block (11) and a second fixing block (12) are fixedly installed on the connecting rod (10). A first pull ring (13) is hinged to both ends of the first fixing block (11). A first cable (14) is hooked to the first pull ring (13) by a hook. A second pull ring (15) is hooked to the end of the first cable (14) away from the first pull ring (13) by a hook. The second pull ring (15) is hinged to the second guardrail (2).

5. A guard rail for municipal road and bridge works according to claim 4, characterized in that: Both ends of the second fixed block (12) are hinged with a third pull ring (16), a second cable (17) is hung on the third pull ring (16) through a hook, one end of the second cable (17) away from the third pull ring (16) is hung on a fourth pull ring (18) through a hook, and the fourth pull ring (18) is hinged on the third guardrail (3).

6. A guard rail for municipal road and bridge works according to claim 5, characterized in that: The lower ends of the first support column (5) and the second support column (6) are both installed with a fixed base (19), and a plurality of mounting plates (20) are installed on the fixed base (19), and mounting holes (21) are formed in the mounting plates (20).

7. The guardrail for municipal road and bridge works as defined in claim 6, wherein: The upper ends of the plurality of first support columns (5), the plurality of second support columns (6) and the connecting rod (10) are all installed with warning lights (22).

8. The guardrail for municipal road and bridge works as defined in claim 7, wherein: The first cable (14) and the second cable (17) are both twisted by a plurality of high-strength steel wires.

Images