Waterproof cover

Abstract

The application belongs to the technical field of waterproofing of beam end anchorage segment, and discloses a waterproof cover, which comprises a pre-buried pipe, a stainless steel waterproof cover installed at the top end of the pre-buried pipe, and a sealing cover installed at the top end of the stainless steel waterproof cover. The inner side section of the top end where the stainless steel waterproof cover and the sealing cover are connected is a slope. The bottom of the stainless steel waterproof cover and the sealing cover is welded with a trapezoidal cover. The trapezoidal cover is formed by a plurality of movable petal circumferential arrays. The trapezoidal cover is inserted into the top end of the stainless steel waterproof cover or the pre-buried pipe downward, so that the movable petals on the trapezoidal cover shrink inward, and the slope of the section of the trapezoidal cover is finally the same as the slope of the inner side section of the top end of the stainless steel waterproof cover or the pre-buried pipe, thereby being attached. The above technical solution utilizes the trapezoidal cover tension to compress the solidified welding ring II, and the flange is limited, so that the sealing degree and firmness are improved. Meanwhile, the flange can further play a sealing effect to prevent rainwater from penetrating and eroding.

Description

Technical Field

[0001] This invention belongs to the field of waterproofing technology for beam end anchorage sections, specifically a waterproof cover. Background Technology

[0002] Hangers and cables are among the main structural components that bear the load of roads and bridges. They are typically placed vertically for load-bearing and stability, preventing bridge collapse and deformation, and providing a certain degree of seismic resistance. They also include anchorage sections, specifically the beam-end anchorage sections, which connect the hangers to the bridge structure and are also the parts of the hanger structure most susceptible to water erosion.

[0003] To prevent rainwater ingress, the connection between the embedded pipe and the hanger in the beam-end anchorage section is sealed with a waterproof cover, and the interior is further sealed by filling with concrete or injecting oil-based wax. However, it is difficult for the embedded pipe to achieve long-term corrosion and waterproofing. Due to the durability of the waterproofing material at the seal and the damage to the waterproofing material caused by the vibration that the hanger needs to withstand, the sealant between the sealing components will break down over time, leading to water ingress and corrosion into the embedded pipe. Therefore, it is necessary to fill the sealant between the structural components as completely as possible and improve the bonding strength of the sealant to extend the service life of the beam-end anchorage section.

[0004] This application proposes a waterproof cover for the anchorage section at the beam end to improve its waterproof performance. Summary of the Invention

[0005] To address the problems mentioned in the background section, the present invention provides a waterproof cover.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a waterproof cover, comprising a pre-embedded pipe, a stainless steel waterproof cover installed at the top of the pre-embedded pipe, and a sealing cover installed at the top of the stainless steel waterproof cover. The inner cross-section of the top of the connection between the stainless steel waterproof cover and the sealing cover is inclined. A trapezoidal cover is welded to the bottom of both the stainless steel waterproof cover and the sealing cover. The trapezoidal cover is formed by a multi-lobed movable structure arranged in a circumferential array. The trapezoidal cover is inserted downward into the top of the stainless steel waterproof cover or the pre-embedded pipe, causing the movable lobes on the trapezoidal cover to contract inward, thereby making the slope of the trapezoidal cover cross-section the same as the slope of the inner cross-section of the top of the stainless steel waterproof cover or the pre-embedded pipe, and fitting together. A welding ring is provided between the trapezoidal cover and the stainless steel waterproof cover or the trapezoidal cover and the pre-embedded pipe for welding the trapezoidal cover and the stainless steel waterproof cover or the trapezoidal cover and the pre-embedded pipe after external heating and melting. The top and bottom of the stainless steel waterproof cover are fixedly connected to the sealing cover and the pre-embedded pipe respectively through flange structures.

[0007] Preferably, the sealing cover includes a sealing tube fitted onto the cable sheath, a welding ring disposed between the sealing tube and the cable sheath, and a bimetallic strip welded to the inner wall of the sealing tube, wherein only one end of the bimetallic strip, either the bottom end or the top end, is welded to the inner wall of the sealing tube. The bimetallic strip is used to deform and bend the weld ring after it is heated and melted, thereby maintaining the bent state to fix the solidified weld ring.

[0008] Preferably, the outer circumferential surface of the welding ring is provided with a plurality of accommodating grooves at equal intervals, the accommodating grooves being used to accommodate a ring of bimetallic strips disposed on the inner wall of the sealing tube.

[0009] Preferably, the truncated shield includes a folded block welded between two adjacent flaps. The inner side of the folded block is provided with a welding rod for filling the gap after melting and folding. The welding rod is specifically disposed on the inner wall of the folded block for fixing the protrusion after it has solidified.

[0010] Preferably, the welding ring is installed between the sealing tube and the receiving groove and the bimetallic strip. In the initial state, the bimetallic strip is vertically attached to the inner wall of the sealing tube, and the cross-section of two adjacent bimetallic strips is adapted to the cross-section of the receiving groove.

[0011] Preferably, a waterproof cover is fixedly fitted on the surface of the embedded pipe, and a groove with a depth of 1.5-2mm is reserved on the paving surface at the bottom of the waterproof cover, which is filled with epoxy resin and sealed by the bottom surface of the waterproof cover.

[0012] Preferably, the bottom surface of the waterproof cover is provided with a boss with a height of 0.5mm, the boss is inserted into and adapted to the groove of the paving surface, and the bottom surface of the boss is uniformly provided with a circumferential raised edge.

[0013] Preferably, the waterproof cover and the embedded pipe are fitted with several rubber rings for sealing; The top of the waterproof cover is fixed to the surface of the embedded pipe by bolts, and the bolts are installed at a downward angle of 5 degrees.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: The above technical solution involves inserting a platform-shaped cover, a welded ring, a two-way pre-embedded pipe, and a stainless steel waterproof cover into the inner wall. External heating is applied until the platform-shaped cover melts, and then the final position is locked in place using flange bolts. After the welded ring melts, it fills the internal gaps until completely filled. The tension of the platform-shaped cover is used to press the solidified welded ring, and the flange provides positioning, improving the sealing degree and robustness. Simultaneously, the flange further enhances the sealing effect, preventing rainwater penetration and erosion.

[0015] When heated, the bimetallic strip bends and deforms towards the cable body, changing from being located outside the welded ring to being inserted into the welded ring. Several identical welded rings exhibit this deformation in the circumferential direction, thus forming a root structure inserted into the welded ring. After the welded ring solidifies, it improves the stability of its configuration and its anti-interference performance, making it less prone to breakage in a vibration environment and improving its seismic resistance and fatigue resistance.

[0016] Using an angle grinder, grind the joint between the embedded pipe and the paving surface radially outwards, controlling the grinding depth to 1.5-2mm. After completion, clean away any debris to keep the groove clean. Then, pour in an epoxy resin layer, flush with the paving surface, repeating the pouring process until it no longer seeps downwards. Finally, lower the waterproof cover to press it onto the epoxy resin and secure its height with bolts. This process seals the portion of the embedded pipe joint that is prone to downward water seepage, preventing rainwater from contacting damaged areas of the embedded pipe and causing corrosion. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a partial cross-sectional view of the embedded pipe, stainless steel waterproof cover, and sealing cover of the present invention. Figure 3 For the present invention Figure 2 Enlarged schematic diagram of part A; Figure 4 This is a schematic diagram illustrating the change in the bimetallic sheet of the present invention from a vertical to a bent state due to thermal deformation; Figure 5 This is a partial structural schematic diagram of the sealing cover of the present invention; Figure 6 This is a schematic diagram showing the removal of the sealing cover of the present invention; Figure 7 For the present invention Figure 6 Enlarged diagram of part B; Figure 8 This is a partial cross-sectional view of the waterproof cover sheet of the present invention; Figure 9 For the present invention Figure 8 Enlarged diagram of part B; Figure 10 This is a bottom view of the waterproof cover sheet of the present invention.

[0018] In the diagram: 100, embedded pipe; 200, stainless steel waterproof cover; 300, sealing cover; 301, sealing pipe; 302, welding ring one; 3021, receiving groove; 303, bimetallic strip; 304, platform-shaped cover; 3041, folded block; 3042, welding rod; 3043, protrusion; 305, welding ring two; 400, waterproof cover plate; 401, bolt; 402, rubber ring; 403, boss; 404, protruding ridge; 500, epoxy resin. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] like Figures 1 to 2 As shown, the present invention provides a waterproof cover, including a pre-embedded pipe 100, a stainless steel waterproof cover 200 installed at the top of the pre-embedded pipe 100, and a sealing cover 300 installed at the top of the stainless steel waterproof cover 200. The inner cross-section of the top end where the stainless steel waterproof cover 200 and the sealing cover 300 connect is a slope. A trapezoidal cover 304 is welded to the bottom of both the stainless steel waterproof cover 200 and the sealing cover 300. The trapezoidal cover 304 is a multi-lobed movable structure arranged in a circumferential array. The trapezoidal cover 304 is inserted downwards into the stainless steel waterproof cover. The top of the cover 200 or the pre-embedded pipe 100 causes the flap on the truncated cover 304 to contract inward, so that the slope of the cross section of the truncated cover 304 is finally the same as the slope of the inner cross section of the top of the stainless steel waterproof cover 200 or the pre-embedded pipe 100 and fits together. A welding ring 2 305 is provided between the truncated cover 304 and the stainless steel waterproof cover 200 or the truncated cover 304 and the pre-embedded pipe 100 for welding after external heating and melting. The top and bottom of the stainless steel waterproof cover 200 are fixedly connected to the sealing cover 300 and the pre-embedded pipe 100 respectively through flange structures.

[0021] The truncated pyramidal cover 304 is composed of a circumferential array of multiple inwardly bending movable petals. It is inserted into the embedded pipe 100 and the stainless steel waterproof cover 200, fitting snugly against the inner wall, in conjunction with the welded ring 305. Initial insertion may not be fully successful; the flange on the sealing cover 300 and the flange on the embedded pipe 100 or the stainless steel waterproof cover 200 initially limit the insertion bolts. After external heating melts the truncated pyramidal cover 304, further insertion is possible, and the final position is locked by the flange bolts. The welded ring 305, after melting, fills the internal gaps until completely filled. The tension of the truncated pyramidal cover 304 compresses the cured welded ring 305, and the flange provides restraint, thereby greatly improving the sealing degree and firmness. Simultaneously, the flange further enhances the sealing effect, preventing rainwater penetration and erosion.

[0022] like Figure 4 As shown, the sealing cover 300 includes a sealing tube 301 sleeved on the cable body sheath, a welding ring 302 disposed between the sealing tube 301 and the cable body sheath, and a bimetallic strip 303 welded to the inner wall of the sealing tube 301. Only one end of the bimetallic strip 303, either the bottom end or the top end, is welded to the inner wall of the sealing tube 301. The bimetallic strip 303 is used to deform and bend the weld ring 302 after it is heated and melted, thereby maintaining the bent state to fix the solidified weld ring 302.

[0023] After being heated, the bimetallic strip 303 undergoes a bending deformation towards the cable body. The space it originally occupied is rapidly filled by the molten weld ring 302, thus changing the bimetallic strip 303 from being located outside the weld ring 302 to being inserted into the weld ring 302. Several identically configured weld rings 302 exhibit this deformation in the circumferential direction, forming a root structure inserted into the weld ring 302. After the weld ring 302 solidifies, it improves the stability and anti-interference performance of its configuration, making it less prone to breakage in a vibration environment. The bimetallic strip 303 can also be formed at an angle, in which case the configuration of the receiving groove on the weld ring 302 to accommodate the bimetallic strip 303 needs to be adapted accordingly. During installation, it can be installed by rotating it into the sealing tube 301. Those skilled in the art can make special configurations according to actual conditions and needs, but the working principle is the same as that in this application and is also part of the disclosure of this application.

[0024] like Figure 5 As shown, the outer circumferential surface of the welding ring 302 is provided with several accommodating grooves 3021 at equal intervals. The accommodating grooves 3021 are used to accommodate a ring of bimetallic strips 303 set on the inner wall of the sealing tube 301.

[0025] The receiving groove 3021 is a space reserved for the bimetallic strip 303. After the welding ring 302 is installed into the sealing cover 300, the bimetallic strip 303 can fill the space in the receiving groove 3021. This can reduce the air in the inner cavity and reduce the voids in the solidified material after melting, which is beneficial to improving the strength, toughness and service life of the structure.

[0026] like Figure 6 and 7 As shown, the truncated cover 304 includes a folding block 3041 welded between two adjacent flaps. The inner side of the folding block 3041 is provided with a welding rod 3042 for filling the gap after melting and folding with the folding block 3041. The welding rod is specifically set on the inner wall of the folding block 3041 for fixing the protrusion 3043 after it has solidified.

[0027] After the folded block 3041 is installed into the embedded pipe 100 or the stainless steel waterproof cover 200, it will be subjected to the action of the inclined surface. The platform-shaped cover 304 will shrink inward and compress it, thereby holding the protrusion 3043 tightly. Subsequently, the external heater melts and fills the gap inside, and welds the two sides of the folded block 3041 together. The welding rod 3042 is used to penetrate deep into the interior of the cured protrusion 3043 to strengthen the connection between the two and improve stability.

[0028] like Figure 4 and 5 As shown, the welding ring 302 and the sealing tube 301 are installed by engaging the receiving groove 3021 and the bimetallic strip 303. In the initial state, the bimetallic strip 303 is vertically attached to the inner wall of the sealing tube 301, and the cross-section of two adjacent bimetallic strips 303 is adapted to the cross-section of the receiving groove 3021.

[0029] Before the sealing cover 300 is placed on the cable body, the welding ring 302 is installed in the sealing cover 300. The welding ring 302 is lowered from the opening. The position of the welding ring 302 is fixed by the receiving groove 3021 opened on its surface and the bimetallic strip 303 welded to the inner wall of the sealing tube 301. The receiving groove 3021 is not an upward-opening through groove. Therefore, after the bimetallic strip 303 is inserted, it will press against its end to limit the position. The size of the bimetallic strip 303 is adapted to the receiving groove 3021. After the welding ring 302 is installed, it is completely submerged in the sealing tube 301 and does not shake in the circumferential direction. The position is stable, firm and not easy to fall off.

[0030] like Figure 1 As shown, a waterproof cover plate 400 is fixedly fitted on the surface of the pre-embedded pipe 100. A groove with a depth of 1.5-2mm is reserved on the paving surface at the bottom of the waterproof cover plate 400, which is filled with epoxy resin 500 and covered and sealed by the bottom surface of the waterproof cover plate 400.

[0031] The above technical solution is mainly used to improve the waterproof performance of the gap between the embedded pipe 100 and the paving surface. The embedded pipe 100 is suspended above the paving surface at its initial position on the waterproof cover plate 400 and its fixing device. An angle grinder is used to grind the joint between the embedded pipe 100 and the paving surface radially outwards for one circumference, with the grinding depth controlled at 1.5-2mm. After completion, the debris is cleaned to keep the groove clean. Then, an epoxy resin layer is injected into the groove, flush with the paving surface. This injection is repeated multiple times until it no longer seeps downwards. Finally, the waterproof cover plate 400 is lowered to press against the epoxy resin, and its height is fixed with bolts 401. This seals the part of the embedded pipe joint that is prone to downward water seepage, preventing rainwater from contacting the damaged areas of the embedded pipe and causing corrosion.

[0032] like Figure 10 As shown, the bottom surface of the waterproof cover plate 400 is provided with a boss 403 with a height of 0.5mm. The boss 403 is inserted into the groove of the paving surface and fits therein. The bottom surface of the boss 403 is provided with a uniform circumferential protrusion 404.

[0033] The boss 403 is used to penetrate into the annular groove of the paving and bond with the epoxy resin therein, relatively sealing the epoxy resin 500 therein. The protruding rib 404 on it is used to penetrate into the epoxy resin. The cured epoxy resin is fixed to the protruding rib 404. The protruding rib 404 has the effect of improving its stability and integrity.

[0034] like Figure 6 As shown, the part of the waterproof cover 400 that is fitted with the embedded pipe 100 is provided with several rubber rings 402 for sealing. The top of the waterproof cover plate 400 is fixedly installed on the surface of the embedded pipe 100 by bolts 401, with the bolts 401 installed at a downward angle of 5 degrees.

[0035] Bolt 401 is screwed into and locked to the surface of the embedded pipe 100. The installation of bolt 401 is tilted downward by 5 degrees, which increases its downward support force when the end of bolt 401 contacts the embedded pipe 100, and controls the height of the waterproof cover 400 so that it is uppered.

[0036] Working principle and usage process of this invention: The welding ring 302 is installed in the sealing cover 300. The welding ring 302 is lowered from the opening. The position of the welding ring 302 is fixed by the receiving groove 3021 opened on its surface and the bimetallic strip 303 welded to the inner wall of the sealing tube 301. The sealing cover 300 is heated from the outside, so that the welding ring 302 inside melts and quickly fills the internal space. The bimetallic strip 303 bends after being heated, so that the bimetallic strip 303 changes from being located outside the welding ring 302 to being inserted into the welding ring 302. Several welding rings 302 with the same configuration all show this deformation in the circumferential direction, thus forming a root structure inserted into the welding ring 302.

[0037] The platform-shaped cover 304, in conjunction with the welded ring 305, is inserted into the embedded pipe 100 and the stainless steel waterproof cover 200, fitting snugly against the inner wall. The flange on the sealing cover 300, along with the flange on the embedded pipe 100 or the stainless steel waterproof cover 200, initially limits the bolts driven into position. After external heating melts the platform-shaped cover 304, it can be further inserted and finally locked in place by the flange bolts. The welded ring 305, after melting, fills the internal gaps until full. The tension of the platform-shaped cover 304 is used to press the cured welded ring 305, and the flange limits its position, improving the sealing degree and firmness.

[0038] Using an angle grinder, grind the joint between the embedded pipe 100 and the paving surface radially outwards for one full circle, controlling the grinding depth. After completion, clean out any debris to keep the groove clean. Then, inject an epoxy resin layer to make it flush with the paving surface. Repeat the injection several times until it no longer seeps downwards. Finally, lower the waterproof cover plate 400 to press it onto the epoxy resin and fix its height with bolts 401.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A waterproof cover, comprising a pre-embedded pipe (100), a stainless steel waterproof cover (200) installed at the top of the pre-embedded pipe (100), and a sealing cover (300) installed at the top of the stainless steel waterproof cover (200), characterized in that: The inner section of the top end connecting the stainless steel waterproof cover (200) and the sealing cover (300) is inclined. Both the stainless steel waterproof cover (200) and the sealing cover (300) have a truncated pyramidal cover (304) welded to their bottoms. The truncated pyramidal cover (304) is a multi-lobed movable structure arranged in a circumferential array. The truncated pyramidal cover (304) is inserted downwards into the top end of the stainless steel waterproof cover (200) or the pre-embedded pipe (100), causing the flaps on the truncated pyramidal cover (304) to contract inwards, thus creating a platform. The slope of the cross section of the trapezoidal cover (304) is finally the same as the slope of the inner side of the top section of the stainless steel waterproof cover (200) or the pre-embedded pipe (100) and fits together. A welding ring II (305) is provided between the trapezoidal cover (304) and the stainless steel waterproof cover (200) or between the trapezoidal cover (304) and the pre-embedded pipe (100) for welding the trapezoidal cover (304) and the stainless steel waterproof cover (200) or the trapezoidal cover (304) and the pre-embedded pipe (100) after external heating and melting. The top and bottom of the stainless steel waterproof cover (200) are fixedly connected to the sealing cover (300) and the pre-embedded pipe (100) respectively through flange structures.

2. The waterproof cover according to claim 1, characterized in that: The sealing cover (300) includes a sealing tube (301) sleeved on the cable sheath, a welding ring (302) disposed between the sealing tube (301) and the cable sheath, and a bimetallic strip (303) welded to the inner wall of the sealing tube (301). The bimetallic strip (303) is welded to the inner wall of the sealing tube (301) only at one end, either the bottom or the top, of the bimetallic strip (303). The bimetallic strip (303) is used to deform and bend the weld ring (302) after it is heated and melted, thereby maintaining the bent state to fix the solidified weld ring (302).

3. The waterproof cover according to claim 2, characterized in that: The outer circumferential surface of the welding ring (302) is provided with a plurality of receiving grooves (3021) at equal intervals. The receiving grooves (3021) are used to receive a ring of bimetallic strips (303) set on the inner wall of the sealing tube (301).

4. The waterproof cover according to claim 3, characterized in that: The welding ring (302) and the sealing tube (301) are installed by engaging the receiving groove (3021) and the bimetallic strip (303). In the initial state, the bimetallic strip (303) is vertically attached to the inner wall of the sealing tube (301), and the cross-section of two adjacent bimetallic strips (303) is adapted to the cross-section of the receiving groove (3021).

5. The waterproof cover according to claim 1, characterized in that: The surface of the pre-embedded pipe (100) is fixedly fitted with a waterproof cover plate (400). The paving surface at the bottom of the waterproof cover plate (400) has a groove with a depth of 1.5-2mm, which is filled with epoxy resin (500) and covered and sealed by the bottom surface of the waterproof cover plate (400).

6. The waterproof cover according to claim 5, characterized in that: The bottom surface of the waterproof cover (400) is provided with a boss (403) with a height of 0.5mm. The boss (403) is inserted into the groove of the paving surface and is adapted to it. The bottom surface of the boss (403) is uniformly provided with a circumferential raised edge (404).

7. The waterproof cover according to claim 5, characterized in that: The waterproof cover (400) and the embedded pipe (100) are fitted with several rubber rings (402) for sealing; The top of the waterproof cover (400) is fixedly installed on the surface of the pre-embedded pipe (100) by bolts (401), and the installation angle of the bolts (401) is inclined downward by 5 degrees.

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