Splicing type stainless steel and carbon steel composite steel plate corrugated pipe culvert structure

Abstract

The utility model discloses a splicing type stainless steel and carbon steel composite steel plate corrugated pipe culvert structure, which relates to the technical field of corrugated pipe culverts and comprises a first corrugated pipe culvert body, and a second corrugated pipe culvert body is arranged on one side of the first corrugated pipe culvert body. The outer circle wall face of the first corrugated pipe culvert body and the outer circle wall face of the second corrugated pipe culvert body are each fixedly connected with two flanges used for connecting the first corrugated pipe culvert body and the second corrugated pipe culvert body in a sleeved mode, and double sealing between the first corrugated pipe culvert body and the second corrugated pipe culvert body is achieved by arranging a sealing ring and a sealing semi-ring. The sealing ring provides primary sealing, the sealing semi-rings further seal gaps between the flanges, water is effectively prevented from leaking through the gaps, the sealing performance of the corrugated pipe culvert is improved, a movable clamping plate and a clamping block are connected with a clamping groove in a connecting box in a clamped mode, and it is ensured that a first connecting sleeve and a second connecting sleeve are firmly fixed to the outer walls of the flanges through attraction of a strong magnet; and the sealing effect is further enhanced.

Description

Technical Field

[0001] This utility model relates to the field of corrugated pipe culvert technology, specifically to a spliced ​​stainless steel-carbon steel composite steel plate corrugated pipe culvert structure. Background Technology

[0002] Corrugated pipe culverts, also known as metal corrugated pipe culverts or steel corrugated pipe culverts, refer to culverts laid under highways and railways using threaded corrugated pipes. They are connected by sleeves or flanges and can be customized in length as needed. Even unskilled workers can operate them. Construction requires minimal manual labor and can be completed in a short time. They can be assembled or connected as a whole pipe and can be made into arch, ellipse, horseshoe, scoop, and other shapes to meet various requirements. Due to their unique corrugated structure, their pressure resistance is more than 15 times greater than that of cement pipes of the same diameter. Their engineering cost is lower than that of bridges and culverts of the same span, and their construction convenience and foundation treatment may also save costs.

[0003] Extensive research revealed that existing corrugated pipe culverts often use Q235 or SS400 hot-rolled steel plates with hot-dip galvanizing. Some products also have asphalt applied on-site to enhance corrosion resistance. However, the galvanized layer can still corrode under long-term exposure to saline-alkali water, industrial wastewater, or high humidity environments, requiring additional asphalt application or thickened pipe walls. Traditional corrugated pipe culverts are typically connected using only flanges and bolts during splicing, resulting in limited sealing performance. In complex underground environments, such as those with high groundwater levels and high soil moisture, leakage is prone to occur, affecting the service life and function of the corrugated pipe culvert. Therefore, based on the above research and existing technologies, a spliced ​​stainless steel-carbon steel composite corrugated pipe culvert structure is proposed to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide a spliced ​​stainless steel-carbon steel composite steel plate corrugated pipe culvert structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A spliced ​​stainless steel-carbon steel composite corrugated pipe culvert structure includes: a corrugated pipe culvert body one, and a corrugated pipe culvert body two disposed on one side of the corrugated pipe culvert body one. Both the corrugated pipe culvert body one and the corrugated pipe culvert body two are made of stainless steel-carbon steel composite plates. The stainless steel-carbon steel composite plates are integral steel plates formed by hot rolling of stainless steel and carbon steel. The outer stainless steel layer provides excellent corrosion resistance, and the inner carbon steel layer provides high mechanical strength and rigidity. Two flanges for connecting the corrugated pipe culvert body one and the corrugated pipe culvert body two are fixedly sleeved on the outer circular wall surface of the corrugated pipe culvert body one and the outer circular wall surface of the corrugated pipe culvert body two. A plurality of bolts for fixing are connected through the two flanges, and nuts are threaded on the outer circular wall surface of the bolts.

[0007] A sealing mechanism is disposed between the two flanges for sealing the first corrugated pipe culvert body and the second corrugated pipe culvert body.

[0008] Furthermore, the sealing mechanism includes a sealing ring disposed between the two flanges. A connecting sleeve one is movably fitted onto the outer circular wall of the two flanges, and a connecting sleeve two is movably fitted onto the outer circular wall of the two flanges. Sealing half-rings are fixedly fitted onto the inner circular wall of both the connecting sleeve one and the inner circular wall of the connecting sleeve two. Two support boxes are fixedly installed on the outer circular wall of the connecting sleeve one, and two connecting boxes are fixedly installed on the outer circular wall of the connecting sleeve two. A positioning rod one is fixedly installed inside the support box. Two movable clamping plates are slidably connected to the outer circular wall of the positioning rod one. A clamping block is fixedly installed on one side of each movable clamping plate. A spring is movably fitted onto the outer circular wall of the positioning rod one. A movable rod is fixedly installed on one side of each movable clamping plate. Clamping grooves are formed on both sides of the interior of the connecting box, and the clamping block movably clamps into the clamping grooves.

[0009] Furthermore, strong magnets are fixedly installed on both sides of the inside of the connecting box, and the strong magnets are magnetically connected to the movable card plate.

[0010] Furthermore, a second positioning rod is fixedly installed inside the support box, and the movable card plate is slidably connected to the second positioning rod.

[0011] Furthermore, both the inner circular wall surfaces of the first corrugated culvert body and the second corrugated culvert body are coated with an anti-adhesion layer.

[0012] Furthermore, support rods are fixedly installed on the outer circular wall surfaces of both the first and second corrugated pipe culvert bodies, and lifting rings are fixedly installed on the upper ends of the support rods.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. By setting a sealing ring and a sealing half-ring, a double seal is achieved between the first and second corrugated pipe culvert bodies. The sealing ring provides an initial seal, while the sealing half-ring further seals the gap between the flanges, effectively preventing water leakage through the gaps and improving the sealing performance of the corrugated pipe culvert. The movable clamping plate and clamping block engage with the clamping groove on the connecting box and are attracted by a strong magnet, ensuring that the first and second connecting sleeves are firmly fixed to the outer wall of the flange, further enhancing the sealing effect.

[0015] The composite connection method using flanges, bolts, nuts, and connecting sleeves one and two significantly improves the connection strength of the corrugated pipe culvert. The snap-fit ​​design of the movable clamping plate and clamping block, along with the adsorption effect of the strong magnet, further enhances the stability of the connection, enabling it to withstand higher soil pressure and vehicle loads. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the connection structure between the flange and the sealing ring of this utility model;

[0018] Figure 3 This is a schematic diagram of the connection structure of connecting sleeve one and connecting sleeve two of this utility model;

[0019] Figure 4 for Figure 3 A magnified schematic diagram of a portion of the structure of A in the diagram;

[0020] Figure 5 This is a schematic diagram of the connecting box and strong magnet structure of this utility model.

[0021] In the diagram: 1. Corrugated pipe culvert body one; 2. Corrugated pipe culvert body two; 3. Flange; 4. Anti-adhesion layer; 5. Support rod; 6. Lifting ring; 7. Sealing mechanism; 8. Connecting sleeve one; 9. Support box; 10. Sealing ring; 11. Strong magnet; 12. Snap-fit ​​groove; 13. Movable rod; 14. Bolt; 15. Connecting sleeve two; 16. Connecting box; 17. Sealing half ring; 18. Movable clamping plate; 19. Positioning rod one; 20. Spring; 21. Positioning rod two; 22. Snap-fit ​​block. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] In one typical implementation of this application, please refer to Figures 1-5 A spliced ​​stainless steel-carbon steel composite corrugated pipe culvert structure includes a corrugated pipe culvert body 1 and a corrugated pipe culvert body 2 on one side of the corrugated pipe culvert body 1. Both the corrugated pipe culvert body 1 and the corrugated pipe culvert body 2 are made of stainless steel-carbon steel composite plates. The stainless steel-carbon steel composite plates are integral steel plates formed by hot rolling of stainless steel and carbon steel. The outer layer is made of stainless steel, which has excellent resistance to atmospheric corrosion and acid, alkali and salt corrosion. It is especially suitable for humid, coastal, industrial pollution or snow-melting salt environments. The inner carbon steel provides high mechanical strength and rigidity. The carbon steel base is completely wrapped by stainless steel to ensure structural stability and withstand external stresses such as soil pressure and vehicle loads. Even if the stainless steel surface is slightly scratched, it can still maintain its anti-corrosion performance due to the self-passivation characteristics of stainless steel. Compared with traditional galvanized carbon steel (which is prone to white rust and red rust), the stainless steel layer can significantly reduce the risk of rust and extend the service life of the culvert.

[0024] Secondly, the hot-rolled composite process metallurgically bonds stainless steel and carbon steel, avoiding the risk of delamination, improving overall structural stability, and enhancing resistance to soil settlement and deformation. The carbon steel base layer can be welded using conventional arc welding or laser welding, while the stainless steel layer requires matching welding materials (such as ER309L). However, the overall welding process is mature, and corrugated structures can be created through cold rolling, roll forming, or hydroforming, resulting in high processing efficiency. Compared to thickening pure carbon steel, composite steel plates can reduce wall thickness while maintaining strength, lowering transportation and hoisting costs. Simultaneously, the smooth surface of stainless steel makes it less prone to scale buildup or microbial growth on the inner wall, making it suitable for applications with high hygiene requirements, such as drainage and water supply. The composite structure enhances compressive and impact resistance, making it suitable for high-load applications. Furthermore, only when not... The stainless steel layer uses a small amount of high-priced materials, while the carbon steel base reduces costs, making it more economical than a full stainless steel corrugated pipe. Compared to the pure carbon steel thickening solution, the composite steel plate can reduce weight, facilitating transportation and on-site installation. The stainless steel layer is resistant to high and low temperatures, adapting to extremely cold or high-temperature regions, and avoiding the embrittlement or deformation of carbon steel caused by temperature changes. The outer circular wall of the corrugated pipe culvert body 1 and the outer circular wall of the corrugated pipe culvert body 2 are both fixedly fitted with two flanges 3 for connecting the corrugated pipe culvert body 1 and the corrugated pipe culvert body 2. Several bolts 14 for fixing are connected through the two flanges 3. Nuts are threaded on the outer circular wall of the bolts 14. The sealing mechanism 7 is set between the two flanges 3 for sealing the corrugated pipe culvert body 1 and the corrugated pipe culvert body 2.

[0025] The sealing mechanism 7 includes a sealing ring 10, which is disposed between two flanges 3. The sealing ring 10 provides initial sealing for the bellows culvert body 1 and the bellows culvert body 2. The sealing ring 10 has a circular hole of the same size as the flange 3 to facilitate the passage of bolts 14. Connecting sleeve 1 8 and connecting sleeve 2 15 are movably fitted onto the outer circular walls of the two flanges 3. Sealing half-rings 17 are fixedly fitted onto the inner circular walls of both connecting sleeve 1 8 and connecting sleeve 2 15. The two sealing half-rings 17 abut against the outer walls of the two flanges 3, providing a second seal for the bellows culvert body 1 and the bellows culvert body 2. Two support boxes 9 are fixedly installed on the outer circular wall of connecting sleeve 1 8 and connecting sleeve 2 15. Two connecting boxes 16 are fixedly installed. A positioning rod 19 is fixedly installed inside the support box 9. Two movable plates 18 are slidably connected to the outer circular wall of the positioning rod 19. A snap-fit ​​block 22 is fixedly installed on one side of the movable plates 18. A spring 20 is movably sleeved on the outer circular wall of the positioning rod 19. The two ends of the spring 20 are fixedly connected to one side of the two movable plates 18 respectively. A movable rod 13 is fixedly installed on one side of the movable plates 18. One end of the movable rod 13 passes through the support box 9 and extends to the outside of the support box 9. Snap-fit ​​grooves 12 are opened on both sides of the inside of the connecting box 16. The snap-fit ​​block 22 is movably snapped into the snap-fit ​​groove 12. Strong magnets 11 are fixedly installed on both sides of the inside of the connecting box 16. The movable plates 18 are made of iron. The strong magnets 11 can attract the movable plates 18.

[0026] Specifically, by placing connecting sleeve 18 and connecting sleeve 25 on the outer walls of the two flanges 3, the sealing half-ring 17 abuts against the two flanges 3, which further seals the gap between the two flanges 3. Subsequently, the movable card plate 18 and the snap-fit ​​block 22 inside the support box 9 snap-fit ​​with the snap-fit ​​groove 12 on the connecting box 16, thereby installing connecting sleeve 18 and connecting sleeve 25 on the outer walls of the two flanges 3, achieving double sealing of the corrugated pipe culvert body 1 and the corrugated pipe culvert body 2.

[0027] Preferably, using the set corrugated culvert body 1, the worker places corrugated culvert body 1 and corrugated culvert body 2 together so that the flange 3 on corrugated culvert body 1 abuts against the flange 3 on corrugated culvert body 2, and places sealing ring 10 between the two flanges 3. The worker uses bolt 14 to pass through the two flanges 3 and sealing ring 10, and places nut on bolt 14 and rotates the nut to splice corrugated culvert body 1 and corrugated culvert body 2 together. Sealing ring 10 can reduce the gap between the two flanges 3, thereby performing an initial seal on corrugated culvert body 1 and corrugated culvert body 2. Then, the worker squeezes the movable rod 13 to drive the movable clamping plate 18 to move inward along the positioning rod 19, while the spring 20 is compressed. The movable clamping plate 18 moves inward, driving the clamping block 22 to move inward. The worker places connecting sleeve 1 8 and connecting sleeve 2 15 on the outer wall of the two flanges 3, which makes the sealing half ring 17 on the inner wall of connecting sleeve 1 8 and connecting sleeve 2 15 The two flanges 3 abut against their outer walls. Simultaneously, the two movable clamping plates 18 enter the interior of the connecting box 16. The operator releases the movable rod 13, and the force of the spring 20 causes the movable clamping plate 18 to move the clamping block 22 outwards. The clamping block 22 moves outwards and enters the clamping groove 12 inside the connecting box 16. At this time, the strong magnet 11 inside the connecting box 16 also attracts the movable clamping plate 18. The engagement of the clamping block 22 and the clamping groove 12 fixes the connecting sleeve 1 8 and the connecting sleeve 2 15 to the two flanges. The outer wall of flange 3 is then fixed to the outer wall of the two flanges 3. The two sealing half rings 17 further seal the gap between the two flanges 3, thereby achieving a second seal on the corrugated culvert body 1 and the corrugated culvert body 2, thus achieving a sealing effect on the corrugated culvert body 1 and the corrugated culvert body 2, preventing water from leaking through the gap between the corrugated culvert body 1 and the corrugated culvert body 2, and helping workers to transport water using the corrugated culvert body 1 and the corrugated culvert body 2.

[0028] Support plate 11 is fixedly installed on the outer circular wall of connecting sleeve 18 and the outer circular wall of connecting sleeve 2 15. Bearing plate 12 is fixedly installed on the bottom surface of support plate 11. Several connecting holes 13 are opened on the top surface of bearing plate 12. Support plate 11 and bearing plate 12 can support corrugated culvert body 11 and corrugated culvert body 2.

[0029] Preferably, the support plate 11 and the bearing plate 12 are provided to support the corrugated pipe culvert body 1 and the corrugated pipe culvert body 2. The workers put the anchor nail into the through hole 13 on the bearing plate 12 and knock the anchor nail so that one end of the anchor nail enters the soil, which facilitates fixing the support plate 11 and the bearing plate 12.

[0030] The support box 9 has a positioning rod 21 fixedly installed inside. The movable plate 18 is slidably connected to the positioning rod 21, and the positioning rod 21 can restrict the movement of the movable plate 18.

[0031] Preferably, the movable plate 18 moves along the positioning rod 21, which restricts the movement of the movable plate 18, thus achieving the effect of restricting the movable plate 18.

[0032] The inner circular wall surfaces of both the corrugated culvert body 1 and the corrugated culvert body 2 are coated with an anti-adhesion layer 4, which can prevent dirt from adhering to the inner walls of the corrugated culvert body 1 and the corrugated culvert body 2.

[0033] Support rods 5 are fixedly installed on the outer circular wall of both the corrugated pipe culvert body 1 and the outer circular wall of the corrugated pipe culvert body 2. A lifting ring 6 is fixedly installed on the upper end of the support rod 5.

[0034] Preferably, the support rod 5 can support the lifting ring 6. The operator can place the crane hook into the two lifting rings 6 on the corrugated pipe culvert body 1 to lift the corrugated pipe culvert body 1, thus achieving the lifting effect of the corrugated pipe culvert body 1.

[0035] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A spliced ​​stainless steel-carbon steel composite corrugated pipe culvert structure, characterized in that, include: A corrugated culvert body 1 (1) is provided on one side of the corrugated culvert body 2 (2). Both the corrugated culvert body 1 (1) and the corrugated culvert body 2 (2) are made of stainless steel and carbon steel composite steel plate. The stainless steel and carbon steel composite steel plate is an integral steel plate formed by hot rolling of stainless steel and carbon steel. The outer stainless steel provides excellent corrosion resistance, and the inner carbon steel provides high mechanical strength and rigidity. The outer circular wall of the corrugated culvert body 1 (1) and the outer circular wall of the corrugated culvert body 2 (2) are fixedly sleeved with two flanges (3) for connecting the corrugated culvert body 1 (1) and the corrugated culvert body 2 (2). Several bolts (14) for fixing are connected through the two flanges (3). Nuts are threaded on the outer circular wall of the bolts (14). A sealing mechanism (7) is provided between the two flanges (3) for sealing the first corrugated pipe culvert body (1) and the second corrugated pipe culvert body (2).

2. The spliced ​​stainless steel-carbon steel composite corrugated pipe culvert structure according to claim 1, characterized in that: The sealing mechanism (7) includes a sealing ring (10), which is disposed between the two flanges (3). A connecting sleeve one (8) is movably sleeved on the outer circular wall of the two flanges (3), and a connecting sleeve two (15) is movably sleeved on the outer circular wall of the two flanges (3). A sealing half ring (17) is fixedly sleeved on the inner circular wall of the connecting sleeve one (8) and the inner circular wall of the connecting sleeve two (15). Two support boxes (9) are fixedly installed on the outer circular wall of the connecting sleeve one (8), and two support boxes (9) are fixedly installed on the outer circular wall of the connecting sleeve two (15). The connecting box (16) has a positioning rod (19) fixedly installed inside the support box (9). The outer circular wall of the positioning rod (19) is slidably connected to two movable plates (18). A snap-fit ​​block (22) is fixedly installed on one side of the movable plates (18). A spring (20) is movably sleeved on the outer circular wall of the positioning rod (19). A movable rod (13) is fixedly installed on one side of the movable plates (18). Snap-fit ​​grooves (12) are opened on both sides inside the connecting box (16). The snap-fit ​​block (22) is movably snapped into the snap-fit ​​groove (12).

3. The spliced ​​stainless steel-carbon steel composite corrugated pipe culvert structure according to claim 2, characterized in that: Strong magnets (11) are fixedly installed on both sides of the inside of the connecting box (16), and the strong magnets (11) are magnetically connected to the movable card plate (18).

4. The spliced ​​stainless steel-carbon steel composite corrugated pipe culvert structure according to claim 2, characterized in that: The support box (9) is fixedly installed with a positioning rod (21), and the movable plate (18) is slidably connected to the positioning rod (21).

5. The spliced ​​stainless steel-carbon steel composite corrugated pipe culvert structure according to claim 1, characterized in that: The inner circular wall surface of the corrugated culvert body one (1) and the inner circular wall surface of the corrugated culvert body two (2) are both coated with an anti-adhesion layer (4).

6. The spliced ​​stainless steel-carbon steel composite corrugated pipe culvert structure according to claim 1, characterized in that: Support rods (5) are fixedly installed on the outer circular wall of the corrugated culvert body one (1) and the outer circular wall of the corrugated culvert body two (2), and a lifting ring (6) is fixedly installed on the upper end of the support rods (5).

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