Rust-proof metal guardrail

Abstract

The utility model is suitable for the technical field of metal guardrails, and provides a rust-proof metal guardrail which comprises symmetrically arranged guardrail columns. The metal cross rods and the metal assembly rods are assembled on the fence columns; the plurality of plug-in type metal vertical rods are arranged on the metal assembly rod, and the bottom ends of the plurality of metal vertical rods are fixedly connected with the metal cross rod; the detachable pointed cone is assembled at the top end of the metal vertical rod; the detachable shielding shell is arranged on the fence column and used for shielding sun and rain; and the assembling mechanism is arranged on the fence columns and is used for supporting and assembling the shielding shell. According to the anti-rust metal guardrail provided by the scheme, by optimizing the design and adopting various anti-rust measures, the problem of corrosion of the thin cross rods and the thin vertical rods in the metal guardrail is solved, the service life of the guardrail is remarkably prolonged, and the stability of the guardrail is remarkably improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of metal guardrails, and in particular relates to an anti-rust metal guardrail. Background Art

[0002] Metal guardrails, as a common safety protection equipment, are widely used in public places such as parks, roads, bridges, etc., playing an important protective role.

[0003] However, in actual use, metal guardrails, especially their thinner horizontal and vertical bars, are exposed to long-term erosion by the natural environment such as rain and sun, and the rust problem is particularly prominent; this erosion will cause the metal surface to oxidize rapidly and produce rust, which not only affects the appearance of the guardrail, but more importantly, weakens its structural strength and reduces its protective performance. Utility Model Content

[0004] The utility model provides a rust-proof metal guardrail, aiming to solve the increasingly serious rust problem of the existing metal guardrail due to long-term erosion by natural environments such as rain and sun.

[0005] The utility model is realized in this way, a rust-proof metal guardrail comprises: symmetrically arranged fence posts; metal cross bars and metal assembly bars mounted on the fence posts; a plurality of plug-in metal vertical bars arranged on the metal assembly bars, the bottom ends of the plurality of metal vertical bars are fixedly connected to the metal cross bars; a detachable pointed cone mounted on the top end of the metal vertical bar; a detachable shielding shell arranged on the fence posts for shading from the sun and rain; and an assembly mechanism arranged on the fence posts for supporting and assembling the shielding shell.

[0006] Preferably, the assembly mechanism includes: a first groove seat fixed on the railing; a plug-in first support rod arranged on the first groove seat, the top end of the first support rod is fixedly connected to the shielding shell; a first bolt arranged on the first groove seat for limiting the first support rod, one end of the first bolt threadedly passes through the first support rod.

[0007] Preferably, a water receiving mechanism is provided on the fence post, and the water receiving mechanism includes: a water collecting trough provided on the top of the fence post for collecting rainwater; a mesh plate provided in the water collecting trough for filtering impurities; and a drainage pipe fixedly connected to one side of the water collecting trough for drainage.

[0008] Preferably, a plurality of second support rods are symmetrically fixedly installed at the bottom of the water collection trough, and a plurality of second groove seats for limiting the second support rods are symmetrically fixedly installed at the top of the railing, and a second bolt is arranged on the second groove seat, and one end of the second bolt is threadedly passed through the second support rod.

[0009] Preferably, assembly seats for assembling the metal cross bar and the metal assembly rod are fixedly installed on both sides of the railing, and assembly plates compatible with the corresponding assembly seats are fixedly installed on both ends of the metal cross bar and the metal assembly rod, and a third bolt for limiting position is arranged on the assembly plate, and a nut is arranged on the third bolt.

[0010] Preferably, the metal assembly rod is provided with a plurality of assembly tubes, the assembly tubes are adapted to the metal vertical rods, a threaded tube is fixedly mounted on the top end of the metal vertical rod, a threaded column is arranged inside the threaded tube, and the top end of the threaded column is fixedly connected to the pointed cone.

[0011] Preferably, a fixing seat is fixedly installed at the bottom of the railing, a rubber pad is fixedly installed at the bottom of the fixing seat, a plurality of assembly holes are symmetrically opened on the rubber pad and the fixing seat, and the railing, crossbar, assembly rod, vertical rod and pointed cone are all coated with an anti-rust coating.

[0012] Preferably, a limiting plate for limiting the mesh plate is symmetrically fixedly installed on the inner wall of the water collecting trough, and a drainage hole adapted to the drainage pipe is opened on one side of the water collecting trough.

[0013] Compared with the related art, the rust-proof metal guardrail provided by the utility model has the following beneficial effects:

[0014] By optimizing the design and adopting a variety of anti-rust measures, the utility model solves the rust problem of thinner horizontal bars and vertical bars in metal guardrails, and significantly improves the service life and stability of the guardrails; this is mainly due to the special treatment of the surfaces of metal horizontal bars, vertical bars and other components and the coating of anti-rust coatings, which effectively isolate the metal from the external environment and thus prevent the occurrence of rust; secondly, the utility model introduces a water collection mechanism, and through the coordinated use of a water collection trough, a mesh plate and a drainage pipe, effective rainwater collection and discharge are achieved; this not only reduces the risk of rainwater erosion of the guardrail, but also reduces the possibility of rust. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the main structure of a rust-proof metal guardrail provided by the utility model;

[0016] Figure 2 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0017] Figure 3 for Figure 2 An enlarged structural diagram of part A shown in FIG.

[0018] Figure 4 It is a structural schematic diagram of the water collecting tank in the utility model.

[0019] Figure numerals: 1. handrail; 2. horizontal bar; 3. assembly bar; 4. vertical bar; 5. pointed cone; 6. shielding shell; 7. first support bar; 8. first groove seat; 9. first bolt; 10. water collecting trough; 11. mesh plate; 12. drain pipe; 13. second support bar; 14. second groove seat; 15. second bolt; 16. assembly seat. DETAILED DESCRIPTION

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0021] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0022] The utility model embodiment provides a rust-proof metal guardrail, such as Figure 1-4 As shown, the rust-proof metal guardrail includes: symmetrically arranged posts 1; metal cross bars 2 and metal assembly bars 3 mounted on the posts 1; a plurality of plug-in metal vertical bars 4 arranged on the metal assembly bars 3, the bottom ends of the plurality of metal vertical bars 4 being fixedly connected to the metal cross bars 2; a detachable pointed cone 5 mounted on the top of the metal vertical bar 4; a detachable shielding shell 6 arranged on the posts 1 for shading from the sun and rain; and an assembly mechanism arranged on the posts 1 for supporting and assembling the shielding shell 6.

[0023] It should be noted that the corrosion problem of metal guardrails, especially the corrosion problem of thinner horizontal and vertical bars, is particularly prominent and serious; this is because these tiny components are exposed to the outdoor environment for a long time and are directly attacked by natural factors such as rain and sun; specifically, the acidic substances and dissolved salts in rainwater will react chemically with the metal surface, causing the metal to oxidize rapidly; at the same time, the ultraviolet rays in the sun have a strong radiation effect, which can destroy the protective layer on the metal surface, making it more susceptible to corrosion. This dual effect makes the thinner horizontal and vertical bars the hardest hit by rust; rust not only destroys the aesthetics of the metal guardrail and makes its surface mottled, but more importantly, it seriously weakens the structural strength of the guardrail; after the metal rusts, its internal crystal structure will change, causing the material to become fragile and brittle; this structural change makes the thinner horizontal and vertical bars more likely to deform or break when subjected to external forces, thereby reducing the overall protective performance of the guardrail; in addition, rust will accelerate the damage process of the metal guardrail; the rusted parts often become stress concentration areas, which are prone to cracks and fractures; over time, these cracks will gradually expand, eventually leading to the failure of the guardrail; therefore, rust is not only a surface problem, but also a deep-seated problem involving the safety and service life of the guardrail;

[0024] In this embodiment, the fence post 1 serves as the supporting structure of the entire guardrail, and its symmetrical arrangement ensures the stability and balance of the guardrail; the assembly method of the metal cross bar 2 and the metal assembly rod 3 makes the entire guardrail structure stable and easy to install; in particular, the metal vertical rod 4 adopts a plug-in design, which is not only convenient for installation and disassembly, but also can adjust the height and density of the guardrail according to actual needs; it is worth mentioning that in view of the problem that the thinner cross bar 2 and vertical rod 4 in the metal guardrail are prone to rust, the utility model adopts a variety of anti-rust measures; the surfaces of the metal cross bar 2 and the metal vertical rod 4 are specially treated and coated with a coating having excellent rust resistance A coating that can be used, such as a galvanized layer or an epoxy zinc-rich primer, can effectively isolate the metal from the external environment, thereby preventing the occurrence of rust; this coating not only has good anti-rust properties, but also has high adhesion and wear resistance, and can maintain the protective effect on the metal for a long time; in addition, the design of the detachable shielding shell 6 provides the guardrail with additional sunshade and rainproof functions; on rainy days, the shielding shell 6 can block the direct erosion of rainwater; on sunny days, the shielding shell 6 can block the ultraviolet rays in the sun and reduce the light aging phenomenon of the metal surface; this design not only extends the service life of the guardrail, but also improves its comfort level.

[0025] In a further preferred embodiment of the utility model, the assembly mechanism includes: a first groove seat 8 fixed on the railing 1; a plug-in first support rod 7 arranged on the first groove seat 8, and the top end of the first support rod 7 is fixedly connected to the shielding shell 6; a first bolt 9 arranged on the first groove seat 8 for limiting the first support rod 7, and one end of the first bolt 9 is threadedly inserted through the first support rod 7.

[0026] In this embodiment, the fixed design of the first groove seat 8 ensures the stability of the entire assembly mechanism. The first support rod 7 adopts a plug-in design, which is not only convenient for installation and disassembly, but also can adjust the height and angle of the shielding shell 6 according to actual needs; this design not only improves the convenience of installation, but also enhances the flexibility of the entire structure; more importantly, the setting of the first bolt 9. One end of the first bolt 9 is threaded through the first support rod 7, which effectively limits the first support rod 7. In this way, whether in windy and rainy weather or in daily use, the shielding shell 6 can remain stable and is not easily affected by external forces and displaced or shaken. This not only enhances the overall stability of the guardrail, but also improves the sunshade and rainproof effect of the shielding shell 6; through the design of this assembly mechanism, the rust-proof metal guardrail of the utility model not only solves the rust problem of the thinner crossbar 2 and the vertical bar 4, but also improves the practicality and durability of the guardrail by adding sunshade and rainproof functions.

[0027] In a further preferred embodiment of the utility model, a water receiving mechanism is provided on the guardrail 1, and the water receiving mechanism includes: a water collecting trough 10 provided on the top of the guardrail 1 for collecting rainwater; a mesh plate 11 provided in the water collecting trough 10 for filtering impurities; and a drainage pipe 12 fixedly connected to one side of the water collecting trough 10 for drainage.

[0028] In this embodiment, the design of the water collection tank 10 cleverly collects rainwater, avoiding erosion caused by rainwater directly dripping on the metal guardrail; at the same time, the capacity of the water collection tank 10 is moderate and can accommodate a certain amount of rainwater, ensuring that rainwater can be effectively collected even in heavy rain weather; the setting of the mesh plate 11 plays a role in filtering impurities; in the process of rainwater collection, the mesh plate 11 can effectively block impurities such as leaves to avoid pipe blockage, which is conducive to smooth drainage; the drain pipe 12 is responsible for discharging rainwater from the water collection tank 10; the drain pipe 12 is connected to the water collection tank 10 in a fixed connection manner to ensure that rainwater can be discharged smoothly, avoiding the problem of excessive accumulation of rainwater in the water collection tank 10 and overflow; this design not only improves the efficiency of rainwater discharge, but also reduces the risk of rainwater erosion on the guardrail; through the design of this water receiving mechanism, the rust-proof metal guardrail of the utility model can better protect itself from erosion in rainy weather; rainwater is effectively collected and discharged, reducing the chance of rainwater contacting the metal guardrail, thereby reducing the risk of rust.

[0029] In a further preferred embodiment of the utility model, a plurality of second support rods 13 are symmetrically fixedly installed at the bottom of the water collecting trough 10, and a plurality of second groove seats 14 for limiting the second support rods 13 are symmetrically fixedly installed on the top of the railing 1, and a second bolt 15 is arranged on the second groove seat 14, and one end of the second bolt 15 is threadedly inserted through the second support rod 13.

[0030] In this embodiment, the second support rod 13 and the second groove seat 14 are used together to provide a stable support for the water collection tank 10; by reasonably designing the number and position of the support rods, it can be ensured that the water collection tank 10 is not easy to shake or tilt when subjected to external forces such as wind and rain, thereby ensuring that its function of collecting rainwater can be effectively exerted; secondly, the provision of the second bolt 15 further enhances the stability of the installation of the water collection tank 10. By threading one end of the second bolt 15 through the second support rod 13, the second support rod 13 can be limited and fixed. This fastening method is not only simple and convenient, but also firm and reliable, and can effectively prevent the water collection tank 10 from loosening or falling off during use.

[0031] In a further preferred embodiment of the utility model, both sides of the railing 1 are fixedly installed with assembly seats 16 for assembling the metal cross bar 2 and the metal assembly rod 3, and both ends of the metal cross bar 2 and the metal assembly rod 3 are fixedly installed with assembly plates adapted to the corresponding assembly seats 16, and the assembly plate is provided with a third bolt for limiting, and a nut is provided on the third bolt.

[0032] In this embodiment, the combination of the assembly seat 16 and the assembly plate enables the metal cross bar 2 and the metal assembly rod 3 to be firmly mounted on the railing 1, and they are not prone to loosening or falling off; this stable assembly method not only ensures the overall stability of the guardrail, but also improves its ability to resist wind and rain, so that it can still maintain a good use effect under severe weather conditions; secondly, the provision of the third bolt further enhances the firmness of the assembly; by passing the third bolt through the assembly plate and fixing it on the assembly seat 16, the metal cross bar 2 and the metal assembly rod 3 can be limited and fixed; the design of the nut facilitates the tightening operation of the bolt, making the assembly process simpler and faster.

[0033] In a further preferred embodiment of the utility model, a plurality of assembly tubes are arranged on the metal assembly rod 3, and the assembly tubes are adapted to the metal vertical rod 4. A threaded tube is fixedly installed on the top end of the metal vertical rod 4, and a threaded column is arranged inside the threaded tube. The top end of the threaded column is fixedly connected to the pointed cone 5.

[0034] In this embodiment, the matching design of the assembly cylinder and the metal vertical rod 4 allows the vertical rod 4 to be easily and quickly inserted into the assembly cylinder to achieve a preliminary connection with the assembly rod 3; this plug-in assembly method not only simplifies the installation steps, but also improves the assembly efficiency; secondly, the coordinated use of the threaded cylinder and the threaded column further enhances the connection stability between the vertical rod 4 and the pointed cone 5; by screwing the threaded column into the threaded cylinder, the pointed cone 5 can be tightened and fixed; this threaded connection has the advantages of simple structure, reliable connection, and easy disassembly, ensuring that the pointed cone 5 is not easy to fall off or loosen during use; in addition, this design also takes into account the convenience of replacement and maintenance of the pointed cone 5; due to the use of a detachable connection method, when the pointed cone 5 is damaged or needs to be replaced, it is only necessary to loosen the threaded connection to easily complete the disassembly and replacement work, without the need for large-scale disassembly and reinstallation of the entire guardrail.

[0035] In a further preferred embodiment of the utility model, a fixing seat is fixedly installed at the bottom of the fence post 1, a rubber pad is fixedly installed at the bottom of the fixing seat, a plurality of assembly holes are symmetrically opened on the rubber pad and the fixing seat, and the fence post 1, the cross bar 2, the assembly bar 3, the vertical bar 4 and the pointed cone 5 are all coated with an anti-rust coating.

[0036] In this embodiment, the provision of the fixing seat enhances the stability of the connection between the guardrail 1 and the ground; the fixing seat not only provides a larger contact area, but also, through its structural design, enables the guardrail 1 to be firmly mounted on the ground and not prone to shaking or tilting; it helps to ensure the stability of the entire guardrail and improve its use effect under different environmental conditions; secondly, the addition of the rubber pad further enhances the stability of the installation and the shock absorbing performance; the rubber pad has good elasticity and wear resistance, and can effectively alleviate the impact of external impact force on the guardrail and reduce the generation of vibration and noise; at the same time, the rubber pad can also increase the friction with the ground, improve the wind resistance of the guardrail, and enable it to remain stable under severe weather conditions; in addition, the design of the assembly hole facilitates the fixed connection between the guardrail and the ground. By symmetrically opening a number of assembly holes on the fixing seat and the rubber pad, the guardrail can be conveniently fixed to the ground using bolts or other fasteners, thereby achieving quick and stable installation; finally, the application of the anti-rust coating is the key to the anti-rust performance of the entire guardrail; by applying the anti-rust coating on the railing 1, the crossbar 2, the assembly rod 3, the vertical rod 4 and the pointed cone 5, the metal can be effectively isolated from the air, the occurrence of oxidation reaction can be reduced, and the service life of the guardrail can be extended; this anti-rust coating usually has good weather resistance and wear resistance, and can maintain a stable anti-rust effect under different environmental conditions.

[0037] In a further preferred embodiment of the utility model, a limiting plate for limiting the mesh plate 11 is symmetrically fixedly installed on the inner wall of the water collecting trough 10, and a drainage hole adapted to the drainage pipe 12 is opened on one side of the water collecting trough 10.

[0038] In this embodiment, the mesh plate 11 is fixed and limited by the limiting plate, so that the stable position of the mesh plate 11 in the sump 10 can be ensured to prevent it from shifting or tilting during use; this helps to maintain the filtering effect of the mesh plate 11, ensure that rainwater can smoothly pass through the mesh plate 11 into the sump 10, and effectively block the entry of impurities; secondly, the installation of the limiting plate increases the contact area between the mesh plate 11 and the inner wall of the sump 10, and improves the supporting stability of the mesh plate 11; even in the case of strong wind or rain erosion, the mesh plate 11 can remain fixed to ensure the normal use of the sump 10; in addition, the matching design of the drain hole and the drain pipe 12 enables the rainwater in the sump 10 to be quickly discharged into the drain pipe 12 through the drain hole, and then discharged smoothly; this design reduces the accumulation time of rainwater in the sump 10, reduces the risk of overflow due to excessive water accumulation, and improves the drainage efficiency of the sump 10.

[0039] To sum up, the rust-proof metal guardrail provided by the present technical solution effectively solves the problem of easy rust of the thinner horizontal bars 2 and vertical bars 4 in the metal guardrail by optimizing the structural design, adopting special rust-proof coatings, and adding sunshade and rainproof functions; this guardrail is not only beautiful and durable, but also has high protection and safety performance, providing an effective solution for safety protection in public places.

[0040] Compared with the relevant technology, the utility model solves the rust problem of the thinner crossbar 2 and vertical bar 4 in the metal guardrail by optimizing the design and adopting a variety of anti-rust measures, and significantly improves the service life and stability of the guardrail; this is mainly due to the special treatment of the surface of the metal crossbar 2, vertical bar 4 and other components and the coating of the anti-rust coating, which effectively isolates the metal from the external environment, thereby preventing the occurrence of rust; secondly, the utility model introduces a water receiving mechanism, through the coordinated use of the water collection trough 10, the mesh plate 11 and the drain pipe 12, to achieve effective collection and discharge of rainwater; this not only reduces the risk of rainwater erosion of the guardrail, but also reduces the possibility of rust.

[0041] It is worth noting that the circuits, electronic components and modules involved in the present utility model are all prior art and can be fully implemented by those skilled in the art. Needless to say, the content protected by the present utility model does not involve improvements to software and methods.

[0042] In the several embodiments provided in the present application, it should be understood that the disclosed device can be implemented in other ways. For example, the device embodiments described above are only schematic, such as the division of the above-mentioned units, which is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or communication connection shown or discussed can be through some interfaces, and the indirect coupling or communication connection between devices or units can be in the form of telecommunication or other forms.

[0043] The above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit the protection scope of the utility model. Obviously, the described embodiments are only some embodiments of the utility model, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Although the utility model has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the utility model according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the utility model in essence, and these technical solutions also belong to the scope of protection of the utility model.

Claims

1. A rust-proof metal guardrail, characterized in that: include: Symmetrically arranged railings (1); A metal crossbar (2) and a metal mounting bar (3) mounted on the fence post (1); A plurality of plug-in type metal vertical rods (4) are arranged on the metal assembly rod (3), and the bottom ends of the plurality of metal vertical rods (4) are fixedly connected to the metal cross rod (2); A detachable pointed cone (5) mounted on the top of the metal vertical rod (4); A detachable shielding shell (6) arranged on the fence post (1) for shading from the sun and rain; An assembly mechanism is arranged on the fence post (1) and is used to support and assemble the shielding shell (6).

2. The rust-proof metal guardrail according to claim 1, characterized in that: The assembly mechanism comprises: A first groove seat (8) fixed on the fence post (1); A pluggable first support rod (7) arranged on the first groove seat (8), the top end of the first support rod (7) being fixedly connected to the shielding shell (6); A first bolt (9) is arranged on the first groove seat (8) and is used to limit the position of the first support rod (7); one end of the first bolt (9) is threadedly passed through the first support rod (7).

3. The rust-proof metal guardrail according to claim 1, characterized in that: The fence post (1) is provided with a water receiving mechanism, and the water receiving mechanism comprises: A water collection trough (10) provided on the top of the fence post (1) for collecting rainwater; A mesh plate (11) disposed in the water collecting tank (10) and used for filtering impurities; A drainage pipe (12) for drainage is fixedly connected to one side of the water collecting tank (10).

4. The rust-proof metal guardrail according to claim 3, characterized in that: A plurality of second support rods (13) are symmetrically fixedly mounted on the bottom of the water collecting trough (10), and a plurality of second groove seats (14) for limiting the position of the second support rods (13) are symmetrically fixedly mounted on the top of the fence post (1), and a second bolt (15) is arranged on the second groove seat (14), and one end of the second bolt (15) is threadedly inserted through the second support rod (13).

5. The rust-proof metal guardrail according to claim 1, characterized in that: Both sides of the fence post (1) are fixedly mounted with assembly seats (16) for assembling the metal cross bar (2) and the metal assembly rod (3); both ends of the metal cross bar (2) and the metal assembly rod (3) are fixedly mounted with assembly plates that match the corresponding assembly seats (16); the assembly plates are provided with third bolts for limiting position, and the third bolts are provided with nuts.

6. The rust-proof metal guardrail according to claim 1, characterized in that: The metal assembly rod (3) is provided with a plurality of assembly tubes, the assembly tubes being matched with the metal vertical rod (4), the top end of the metal vertical rod (4) being fixedly mounted with a threaded tube, the threaded tube being provided with a threaded column, the top end of the threaded column being fixedly connected with the pointed cone (5).

7. The rust-proof metal guardrail according to claim 1, characterized in that: A fixing seat is fixedly installed at the bottom of the fence post (1), a rubber pad is fixedly installed at the bottom of the fixing seat, and a plurality of assembly holes are symmetrically provided on the rubber pad and the fixing seat. The fence post (1), the cross bar (2), the assembly bar (3), the vertical bar (4) and the pointed cone (5) are all coated with an anti-rust coating.

8. The rust-proof metal guardrail according to claim 3, characterized in that: A limiting plate for limiting the position of the mesh plate (11) is symmetrically fixedly mounted on the inner wall of the water collecting trough (10), and a drainage hole adapted to the drainage pipe (12) is provided on one side of the water collecting trough (10).

Images