Protective fence for hydraulic engineering construction
By designing the edge matching structure and the central connection measurement structure in the guardrail for water conservancy engineering construction, the problem of easy deformation of the connection position of the traditional guardrail is solved, and higher stability and safety are achieved.
Patent Information
- Application Number
- CN202510227221.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-27
- Publication Date
- 2025-05-30
AI Technical Summary
The guardrails used in traditional water conservancy projects are prone to deform at the guardrail connection position, resulting in the failure of the entire guardrail and affecting the safety of the construction area.
A protective railing for water conservancy engineering construction was designed, using an edge fitting structure and a middle connection measurement structure, and protecting the connection structure through the arc-shaped external extension panel and the outer reverse side, and enhancing the stability of the overall structure through the contact between the bottom fitting and the top fitting and the limit of the cover plate.
It effectively protects the connection position of the guardrail, enhances the stability of the entire guardrail, avoids deformation and failure caused by external impact, and improves the safety of the construction area of the water conservancy project.
Smart Images
Figure CN120061638A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to an auxiliary device for water conservancy construction, in particular to a guardrail for water conservancy project construction. Background Art
[0002] A water conservancy project is a project built to control and allocate surface water and groundwater in nature to achieve the purpose of eliminating harm and bringing benefits. Since the soil near a water conservancy project is softer than that of an ordinary construction site, the probability of depression and collapse is very high. Therefore, in the area of water conservancy project construction, it is generally necessary to enclose and protect with a guardrail.
[0003] In the design process of traditional fences, the durability of the entire guardrail is basically improved by enhancing the strength of the guardrail, either by stacking materials or changing materials to increase the strength. However, although the strength of the guardrail itself is improved in this way, the cooperation strength between guardrails has not been enhanced. Therefore, some existing technologies will set up a connecting structure between guardrails to tightly connect two adjacent guardrails. However, since the strength of the guardrail itself is improved, the weak point of the entire guardrail surface will be concentrated at the connecting position of the guardrails. Whether it is subjected to external natural impact or artificial damage, it will occur at the connecting position, resulting in the deformation of the connecting structure and further leading to the failure of the entire guardrail surface.
[0004] Therefore, this case aims to provide a guardrail for water conservancy project construction, which can achieve good protection and closing effects both on the entire surface and the side of the guardrail after installation, and can strongly protect the connecting position of the guardrail to improve the stability of the entire guardrail surface. Summary of the Invention
[0005] The present invention provides a guardrail for water conservancy project construction, which can effectively solve the above problems.
[0006] The present invention is implemented as follows:
[0007] A guardrail for water conservancy project construction includes:
[0008] A protection frame, including at least two support seats, with support rods arranged on the support seats, and a protection surface connected between the two support rods;
[0009] An edge matching structure, the protection surface is a straight plate structure, the edge matching structure includes an outer extension panel fixedly connected to the front of the protection surface, a bottom matching part is arranged on one side of the outer extension panel, a top matching part is arranged on the other side of the outer extension panel, the bottom matching part of the outer extension panel is clamped inside the top matching part of the adjacent outer extension panel, an outer reverse side is arranged on the reverse side of the protection surface, a gap space is formed between the outer reverse side and the outer extension panel, and a cover plate is locked at the upper end of the gap space;
[0010] The middle connection measurement structure includes a first connection piece connected to the outside of the support rod on one side, and a second connection piece is arranged on the outside of the support rod on the other side. When the top fitting piece and the bottom fitting piece are fitted, the first connection piece is buckled with the adjacent second connection piece. A fastening piece is arranged on the outside of the first connection piece. After the first connection piece is in place, the fastening piece is nailed into the ground, and an induction piece is embedded in the fastening piece. When the fastening piece is nailed into the ground, the induction piece is embedded in the ground accordingly.
[0011] As a further improvement, the outer extension panel includes a curved surface that fits the protective surface. A first extension surface and a second extension surface are respectively arranged on both sides of the curved surface. The first extension surface is connected to the bottom fitting piece, and the second extension surface is connected to the top fitting piece.
[0012] As a further improvement, a convex point is arranged on the inner side of the second extension surface, and an inner groove is arranged on the inner side of the first extension surface. After the adjacent protective surfaces are combined, the convex point on the second extension surface is clamped in the inner groove of the adjacent first extension surface.
[0013] As a further improvement, the top fitting piece includes an outer mounting seat located below the convex point and fixed to the second extension surface. A plurality of insertion shafts are arranged on the inner side of the outer mounting seat, and a plurality of convex balls are arranged on the insertion shafts.
[0014] As a further improvement, the bottom fitting piece includes an inner mounting seat located below the inner groove and fixed to the first extension surface. A plurality of receiving cavity hoppers are arranged on the outer side of the inner mounting seat. When the bottom fitting piece is fitted with the top fitting piece, the insertion shafts are movably inserted into the receiving cavity hoppers.
[0015] As a further improvement, a step is arranged on the top surface of the curved surface and the outer reverse surface, and a plurality of locking holes are arranged on the step. The cover plate is locked on the step.
[0016] As a further improvement, the cover plate includes a connecting plate located on the step, and a deformation band is coated on the outer side of the connecting plate.
[0017] As a further improvement, the first connection piece includes a first connection hook fixed to the outside of the support rod on one side. A lateral groove is arranged on the outside of the first connection hook. The second connection piece includes a second connection hook fixed to the outside of the support rod on the other side, and an elastic button is arranged outside the second connection hook.
[0018] As a further improvement, the induction piece is an annular infrared sensor. A toothed ring is arranged at the outer ring position of the bottom of the induction piece, and the teeth of the toothed ring face downward.
[0019] As a further improvement, the fastening member is slidably installed inside the bottom of the first connecting hook through a blocking buckle, and the bottom of the fastening member is a pointed head.
[0020] The beneficial effects of the present invention are as follows:
[0021] Between the guardrails of the prior art, the connection between the two is completed through a simple connecting device. When the guardrail is impacted, the connection position between the two is deformed first, which affects the stability of the entire guardrail surface, and further affects the safety of the construction area of the water conservancy project. Therefore, the present invention adds an edge matching structure, and respectively sets an arc-shaped outer extension panel and an outer reverse side on the outer side of the original flat protection surface. The arc-shaped setting can protect the connection structure between the two guardrails, so as to avoid the external impact directly hitting the connection structure between the guardrails. The bottom matching member and the top matching member are also used to cooperate between adjacent outer extension panels, so that the outer extension panels abut against each other to form a more stable counter force. In addition, a special-shaped cover plate is provided on the top surfaces of the two outer extension panels and the outer reverse side for limiting and stabilizing, so as to achieve the most stable structure, and it can ensure no deformation even under a large impact.
[0022] Since the adjacent outer extension panels are both arc-shaped surfaces, if a separate stable structure is not set, the two arc-shaped surfaces cannot be normally matched, and it is even difficult to be on the same plane. Therefore, the two sides of the outer extension panel of the present invention are respectively provided with a first extension surface and a second extension surface. On the one hand, it provides enough outward expansion space for the bottom matching member and the top matching member. On the other hand, it enables the two outer extension panels to have a connecting structure so that they do not slip relative to each other.
[0023] During the cooperation process of the first extension surface and the second extension surface, their cooperation needs to be able to cooperate in the longitudinal direction and enable them to slip relative to each other. Therefore, there are outward convex points on the inner side of the second extension surface of the present invention, and inner grooves on the inner side of the first extension surface. When the two approach each other, they can directly engage with each other, thereby achieving longitudinal limit between the two.
[0024] During the cooperation process of the outward convex points and the inner grooves, actually, they are only single-point cooperation. Therefore, the connection strength between the first extension surface and the second extension surface is not strong. Since the bottom matching member and the top matching member are installed on the first extension surface and the second extension surface, the shaft and convex ball of the top matching member will be synchronously inserted into the receiving cavity hopper, so that the first extension surface and the second extension surface form a secondary cooperation. Through the two-stage cooperation method, the stability of the two arc-shaped outer extension panels is enhanced.
[0025] When the cover plate is fitted with the curved surface and the outer reverse side, in order to prevent the cover plate from being directly bounced away, the present invention provides a step on the top surface of the curved surface and the outer reverse side, and the installation is formed by clamping and embedding through the step. In order to adapt to the thermal expansion and contraction outdoors, a deformation band is provided on the inner side of the link plate to improve the fitting degree of the link plate with the curved surface and the outer reverse side.
[0026] After the outer extension panel and the outer reverse side form a stable external structure, an effective connection and protection must also be formed at the middle positions of the two protective surfaces. Therefore, in the present invention, through the additional middle connection and measurement structure, when the two protective surfaces are connected and fitted, and the two outer extension panels are fitted, the first connection member and the second connection member on the adjacent support rods will also cooperate, thereby forming a stable connection structure. And after the first connection member and the second connection member are fully fitted, the fastening member at the bottom of the first connection member can also be driven into the soil ground accordingly, further enhancing the stability effect at the middle position. And this fixing process is monitored in real time by the sensing member. If the entire guardrail topples, the fastening members in the middle will topple simultaneously, exposing the sensing member, which can provide real-time feedback, thus achieving the effect of real-time monitoring of the stability of the guardrail.
[0027] During the process of the sensing member moving downward along with the fastening member, in order to make it easier to insert into the soil, the present invention provides a toothed ring at the bottom of the sensing member, through which the sensing member can be more easily embedded in the soil, thereby reducing the probability of its sensing error.
[0028] Similarly, in order to improve the fitting effect between the fastening member and the soil, the bottom of the fastening member in the present invention is pointed, and the triggering of the fastening member occurs after the first connection hook and the second connection member are fitted, so as to ensure the stability of the installation. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.
[0030] Figure 1 is a top view structural schematic diagram of the present invention.
[0031] Figure 2 is a structural schematic diagram of the protection frame of the present invention.
[0032] Figure 3 is a structural schematic diagram of the outer extension panel of the present invention.
[0033] Figure 4 is a structural schematic diagram of the cover plate of the present invention.
[0034] Figure 5 It is a schematic structural diagram of the first connecting piece of the present invention.
[0035] Figure 6 It is a schematic structural diagram of the second connecting piece of the present invention.
[0036] Figure 7 It is a schematic structural diagram of the fastening piece of the present invention.
[0037] In the figure:
[0038] Protective frame 10, support base 11, support rod 12, protective surface 13, outer extension panel 21, curved surface 211, first extension surface 212, inner groove 2121, second extension surface 213, outer convex point 2131, bottom fitting 22, inner side mounting seat 221, receiving cavity hopper 222, top fitting 23, outer side mounting seat 231, insertion shaft 232, convex ball 233, outer reverse side 24, cover plate 26, link plate 261, deformation band 262, middle connection measurement structure 30, first connecting piece 31, first connecting hook 311, lateral groove 312, second connecting piece 32, second connecting hook 321, spring button 322, fastening piece 33, blocking buckle 331, sensing piece 34, gear ring 341. Detailed implementation manners
[0039] To make the implementation manners of the present invention, all fall within the protection scope of the present invention. Therefore, the following detailed description of the implementation manners of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents selected implementation manners of the present invention. Based on the implementation manners in the present invention, all other implementation manners obtained by those of ordinary skill in the art without making creative efforts fall within the protection scope of the present invention.
[0040] In the description of the present invention, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality of" means two or more unless otherwise specifically defined.
[0041] Refer to Figures 1 to 7As shown in the figure, a guardrail for water conservancy project construction includes: a protection frame 10, which includes at least two support seats 11. A support rod 12 is arranged on the support seat 11, and a protection surface 13 is connected between the two support rods 12; an edge matching structure. The protection surface 13 is a straight plate structure. The edge matching structure includes an outer extension panel 21 fixedly connected to the front of the protection surface 13. A bottom matching part 22 is arranged on one side of the outer extension panel 21, and a top matching part 23 is arranged on the other side of the outer extension panel 21. The bottom matching part 22 of the outer extension panel 21 is clamped inside the top matching part 23 of the adjacent outer extension panel 21. An outer reverse side 24 is arranged on the reverse side of the protection surface 13. A gap space is formed between the outer reverse side 24 and the outer extension panel 21, and a cover plate 26 is locked at the upper end of the gap space; a middle connection and measurement structure 30, which includes a first connection part 31 connected to the outside of the support rod 12 on one side, and a second connection part 32 is arranged on the outside of the support rod 12 on the other side. When the top matching part 23 and the bottom matching part 22 are matched, the first connection part 31 is buckled with the adjacent second connection part 32. A fastening part 33 is arranged on the outside of the first connection part 31. When the first connection part 31 is in place, the fastening part 33 is nailed into the ground, and an induction part 34 is embedded in the fastening part 33. When the fastening part 33 is nailed into the ground, the induction part 34 is embedded in the ground accordingly.
[0042] During use, directly place the support seat 11 on a stable ground or soil body, and then connect the edge matching structure and the middle connection and measurement structure 30 of the two guardrails.
[0043] The connection between the guardrails of the prior art is completed through a simple connection device. When the guardrail is impacted, the connection position between the two is deformed first, which affects the stability of the entire guardrail surface, and further affects the safety of the water conservancy project construction area. Therefore, in the present invention, by adding an edge matching structure, an arc-shaped outer extension panel 21 and an outer reverse side 24 are respectively arranged on the outside of the original flat protection surface 13, which can protect the connection structure between the two guardrails through the arc-shaped setting, so as to avoid the external impact directly impacting the connection structure between the guardrails. The bottom matching part 22 and the top matching part 23 are also matched between the adjacent two outer extension panels 21, so that the outer extension panels 21 are abutted against each other to form a more stable resistance force, and a special-shaped cover plate 26 is also arranged on the top surfaces of the two outer extension panels 21 and the outer reverse side 24 for limiting and stabilizing, so as to achieve the most stable structure, and it can ensure no deformation even under a large impact.
[0044] Since the adjacent outer extension panels 21 are both arc-shaped surfaces, if no separate stable structure is provided, normal cooperation between the two arc-shaped surfaces is impossible, and it is even difficult for them to be on the same plane. Therefore, the outer extension panel 21 of this embodiment includes a curved surface 211 that fits the protective surface 13. On both sides of the curved surface 211, a first extension surface 212 and a second extension surface 213 are respectively provided. The first extension surface 212 is connected to the bottom fitting 22, and the second extension surface 213 is connected to the top fitting 23. The first extension surface 212 and the second extension surface 213 are respectively provided on both sides of the outer extension panel 21. On the one hand, it provides sufficient outward expansion space for the bottom fitting 22 and the top fitting 23, and on the other hand, it enables the two outer extension panels 21 to have a connecting structure so that they will not slip against each other.
[0045] During the cooperation process between the first extension surface 212 and the second extension surface 213, their cooperation needs to be able to cooperate in the longitudinal direction and enable them to slip against each other. Therefore, an outer convex point 2131 is provided on the inner side of the second extension surface 213 of this embodiment, and an inner groove 2121 is provided on the inner side of the first extension surface 212. After the adjacent protective surfaces 13 are combined, the outer convex point 2131 of the second extension surface 213 is clamped in the inner groove 2121 of the adjacent first extension surface 212. There is an outer convex point 2131 on the inner side of the second extension surface 213 and an inner groove 2121 on the inner side of the first extension surface 212. When the two are close to each other, they can be directly clamped together, thereby limiting their positions longitudinally.
[0046] During the cooperation process between the outer convex point 2131 and the inner groove 2121, in fact, they are only a single-point cooperation. Therefore, the connection strength between the first extension surface 212 and the second extension surface 213 is not strong. Since the bottom fitting 22 and the top fitting 23 are installed on the first extension surface 212 and the second extension surface 213, the top fitting 23 of this embodiment includes an outer mounting seat 231 located below the outer convex point 2131 and fixedly connected to the second extension surface 213. A plurality of insertion shafts 232 are provided on the inner side of the outer mounting seat 231, and a plurality of convex balls 233 are provided on the insertion shafts 232. The bottom fitting 22 includes an inner mounting seat 221 located below the inner groove 2121 and fixedly connected to the first extension surface 212. A plurality of receiving cavity hoppers 222 are provided on the outer side of the inner mounting seat 221. When the bottom fitting 22 and the top fitting 23 are cooperated, the insertion shafts 232 are movably inserted into the receiving cavity hoppers 222, and at the same time, the shafts 232 and the convex balls 233 of the top fitting 23 are snapped into the receiving cavity hoppers 222, so that the first extension surface 212 and the second extension surface 213 form a secondary cooperation. Through the two-stage cooperation method, the stability of the two arc-shaped outer extension panels 21 is enhanced.
[0047] When the cover plate 26 is fitted with the curved surface 211 and the outer reverse surface 24, in order to prevent the cover plate 26 from being directly bounced away, a step is provided on the top surface of the curved surface 211 and the outer reverse surface 24 in this embodiment. A number of locking holes are provided on the step, and the cover plate 26 is locked on the step. By providing a step on the top surface of the curved surface 211 and the outer reverse surface 24, installation is formed by means of step clamping and embedding. In order to adapt to the thermal expansion and contraction outdoors, the cover plate 26 includes a connecting plate 261 located on the step. The outside of the connecting plate 261 is covered with a deformation band 262, and the deformation band 262 is also provided on the inside of the connecting plate 261 to improve the matching degree of the connecting plate 261 with the curved surface 211 and the outer reverse surface 24 through the deformation band 262.
[0048] After the outer extension panel 21 and the outer reverse surface 24 form a stable external structure, effective connection protection must also be formed at the middle positions of the two protective surfaces 13. Therefore, in the present invention, through the additional middle connection measurement structure 30, when the two protective surfaces 13 are connected and fitted, and the two outer extension panels 21 are fitted, the first connection member 31 and the second connection member 32 on the adjacent support rods 12 will also cooperate, thereby forming a stable connection structure. And after the first connection member 31 and the second connection member 32 are completely fitted, the fastening member 33 at the bottom of the first connection member 31 can also be driven into the soil ground accordingly, further enhancing the stability effect at the middle position. And this fixing process is monitored in real time by the sensing member 34. If the entire guardrail topples, the fastening member 33 in the middle will topple at the same time, exposing the sensing member 34, which can provide real-time feedback, so as to achieve the effect of real-time monitoring of the stability of the guardrail.
[0049] In order to improve the matching effect of the first connection member 31 and the second connection member 32, the first connection member 31 includes a first connection hook 311 fixedly connected to the outside of the support rod 12 on one side. A lateral groove 312 is provided on the outside of the first connection hook 311. The second connection member 32 includes a second connection hook 321 fixedly connected to the outside of the support rod 12 on the other side. An elastic button 322 is provided outside the second connection hook 321. By engaging the elastic button 322 with the lateral groove 312, the first connection member 31 and the second connection member 32 can be completely buckled together to achieve fixation in the horizontal direction. Combining with the above-mentioned fixation in the longitudinal direction, a limiting and fixing structure is provided in multiple dimensions of the two guardrails, so as to achieve stable connection and not easily deform and separate even when subjected to external impacts.
[0050] During the downward movement of the sensing member 34 along with the fastening member 33, in order to make it easier to insert into the soil, the sensing member 34 in this embodiment is an annular infrared sensor. A toothed ring 341 is provided at the outer ring position of the bottom of the sensing member 34, and the teeth of the toothed ring 341 face downward. By providing the toothed ring 341 at the bottom of the sensing member 34, the sensing member 34 can be more easily embedded in the soil through the toothed ring 341, thereby reducing the probability of its sensing error.
[0051] Similarly, in order to improve the matching effect between the fastening member 33 and the soil, the fastening member 33 in this embodiment is slidably installed inside the bottom of the first connecting hook 311 through a blocking buckle 331. The bottom of the fastening member 33 is a pointed head. The bottom of the fastening member 33 is a pointed head, and the triggering of the fastening member 33 occurs after the first connecting hook 311 cooperates with the second connecting member 32, so as to ensure the stability of the installation.
[0052] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.
Claims
1. A guardrail for water conservancy project construction, characterized in that: include: A protective frame (10) comprises at least two support seats (11), wherein a support rod (12) is disposed on the support seat (11), and a protective surface (13) is connected between the two support rods (12); An edge matching structure, wherein the protective surface (13) is a straight plate structure, and the edge matching structure comprises an extended panel (21) fixedly connected to the front side of the protective surface (13), a bottom matching piece (22) is arranged on one side of the extended panel (21), and a top matching piece (23) is arranged on the other side of the extended panel (21), the bottom matching piece (22) of the extended panel (21) is clamped on the inner side of the top matching piece (23) of the adjacent extended panel (21), and an outer reverse surface (24) is arranged on the reverse side of the protective surface (13), a gap space is formed between the outer reverse surface (24) and the extended panel (21), and a cover plate (26) is locked to the upper end of the gap space; The middle connection measuring structure (30) comprises a first connection piece (31) connected to the outer side of a support rod (12) on one side, and a second connection piece (32) is arranged on the outer side of the support rod (12) on the other side. When the top matching piece (23) is matched with the bottom matching piece (22), the first connection piece (31) is buckled with the adjacent second connection piece (32). A nailing piece (33) is arranged on the outer side of the first connection piece (31). When the first connection piece (31) is in place, the nailing piece (33) is nailed into the ground. A sensing piece (34) is embedded in the nailing piece (33). When the nailing piece (33) is nailed into the ground, the sensing piece (34) is embedded in the ground.
2. A guardrail for water conservancy project construction according to claim 1, characterized in that: The extended panel (21) comprises a curved surface (211) which is in contact with the protective surface (13); a first extended surface (212) and a second extended surface (213) are respectively arranged on both sides of the curved surface (211); the first extended surface (212) is connected to the bottom matching piece (22); and the second extended surface (213) is connected to the top matching piece (23).
3. A guardrail for water conservancy project construction according to claim 1, characterized in that: An outer convex point (2131) is arranged on the inner side of the second extension surface (213), and an inner groove (2121) is arranged on the inner side of the first extension surface (212); after the adjacent protective surfaces (13) are combined, the outer convex point (2131) of the second extension surface (213) is clamped in the inner groove (2121) of the adjacent first extension surface (212).
4. A guardrail for water conservancy project construction according to claim 3, characterized in that: The top fitting (23) comprises an outer mounting seat (231) located below the outer convex point (2131) and fixedly connected to the second extension surface (213), a plurality of insert shafts (232) are arranged on the inner side of the outer mounting seat (231), and a plurality of convex balls (233) are arranged on the insert shafts (232).
5. A guardrail for water conservancy project construction according to claim 4, characterized in that: The bottom fitting member (22) comprises an inner mounting seat (221) located below the inner groove (2121) and fixedly connected to the first extension surface (212); a plurality of accommodating chambers (222) are arranged on the outer side of the inner mounting seat (221); when the bottom fitting member (22) is matched with the top fitting member (23), the insertion shaft (232) is movably connected with the accommodating chambers (222).
6. A guardrail for water conservancy project construction according to claim 1, characterized in that: A step is provided between the curved surface (211) and the top surface of the outer reverse surface (24), a plurality of locking holes are provided on the step, and the cover plate (26) is locked on the step.
7. A guardrail for water conservancy project construction according to claim 6, characterized in that: The cover plate (26) comprises a link plate (261) located on the step, and the outer side of the link plate (261) is covered with a deformation band (262).
8. The protective fence for water conservancy project construction according to claim 1, characterized in that: The first connecting member (31) comprises a first connecting hook (311) fixedly connected to the outer side of the support rod (12) on one side, and a lateral groove (312) is arranged on the outer side of the first connecting hook (311); the second connecting member (32) comprises a second connecting hook (321) fixedly connected to the outer side of the support rod (12) on the other side, and a spring button (322) is arranged on the outside of the second connecting hook (321).
9. A guardrail for water conservancy project construction according to claim 1, characterized in that: The sensing element (34) is an annular infrared sensor. A ring gear (341) is arranged at the outer ring position of the bottom of the sensing element (34), and the teeth of the ring gear (341) face downward.
10. A guardrail for water conservancy project construction according to claim 1, characterized in that: The nail-fastening member (33) is slidably mounted on the inner side of the bottom of the first engaging hook (311) via a blocking buckle (331), and the bottom of the nail-fastening member (33) is a pointed tip.