Anti-corrosion protection device for bridge cable

Abstract

The utility model belongs to the technical field of bridge cables, in particular to a bridge cable anti-corrosion protection device which comprises a cable body for a bridge, two stainless steel semi-rings and two plugging covers, one end of each plugging cover is fixedly connected with a connecting rod, a sacrificial anode protection mechanism is arranged between each connecting rod and the corresponding plugging cover, and the other end of each plugging cover is fixedly connected with the corresponding stainless steel semi-ring. An anti-corrosion combined layer is fixedly arranged on the outer side of the cable body, the two stainless steel semi-rings are rotationally connected with each other, and the cable body is movably arranged in the two stainless steel semi-rings in a sleeved mode. The corrosion-resistant cable is reasonable in structural design, through the arrangement of the sacrificial anode bar, the plugging cover, the connecting ring, the stainless steel semi-ring and the corrosion-resistant combined layer, the cable body can be comprehensively subjected to a corrosion-resistant effect, so that the cable body is not prone to being corroded and damaged, the service life of the cable body is prolonged, the sacrificial anode bar which is seriously corroded can be conveniently disassembled, assembled and replaced at regular intervals, and the service life of the cable body is prolonged. The anti-corrosion effect is improved, and the reliability is high.

Description

Technical Field

[0001] This utility model relates to the field of bridge cable technology, and in particular to a bridge cable anti-corrosion protection device. Background Technology

[0002] Bridge cables are cables used to limit and fix the bridge deck. They are commonly used in suspension bridges, also known as suspension bridges. A suspension bridge is a bridge whose superstructure primarily consists of cables (or steel chains) suspended from towers and anchored to both banks (or both ends of the bridge). The geometry of the cables is determined by force equilibrium conditions and generally approximates a parabola. Many hangers hang from the cables to suspend the bridge deck. Stiffening beams are often installed between the bridge deck and the hangers to form a combined system with the cables, reducing deflection caused by loads.

[0003] A search revealed a bridge cable with an anti-corrosion protection device, authorized by publication number CN214783278U. The cable includes an installation block and an anti-corrosion layer. One side of the installation block is connected to a cable, and the cable is wrapped with an anti-collision sponge layer. The anti-corrosion layer is installed inside the anti-collision sponge layer, and one side of the anti-corrosion layer is connected to a rotating shaft. A fixing block is connected to one side of the anti-corrosion layer, and a threaded hole is connected above the fixing block. A movable spring is installed above the threaded hole, and a connecting rod is connected above the movable spring. A protective layer is installed inside the anti-corrosion layer, and a friction layer is connected to one side of the protective layer.

[0004] However, the aforementioned anti-corrosion protection devices for bridge cables still have shortcomings. They only rely on anti-corrosion layers for corrosion protection, making it inconvenient to use sealing protection and sacrificial anode protection methods for corrosion protection. This results in poor anti-corrosion performance and reduces the service life of bridge cables. Therefore, we propose an anti-corrosion protection device for bridge cables to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to solve the above-mentioned shortcomings and propose a bridge cable anti-corrosion protection device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A bridge cable corrosion protection device includes a bridge cable body, two stainless steel semi-rings and two sealing caps. A connecting rod is fixedly connected to one end of each sealing cap. A sacrificial anode protection mechanism is provided between the connecting rod and the sealing cap. An anti-corrosion composite layer is fixedly provided on the outer side of the cable body. The two stainless steel semi-rings are rotatably connected to each other. The cable body is movably fitted inside the two stainless steel semi-rings. A connecting ring is fixedly connected to one side of each sealing cap. The connecting ring is threaded onto the outer side of the two stainless steel semi-rings.

[0008] As a preferred embodiment of this invention, the lower stainless steel semi-ring is provided with two hinges, and the two stainless steel semi-rings are rotatably connected by the two hinges.

[0009] As a preferred embodiment of this invention, the anti-corrosion composite layer includes a zinc powder layer fixedly disposed on the outside of the cable body, and a rubber anti-corrosion layer is fixedly connected to the outside of the zinc powder layer.

[0010] As a preferred embodiment of this invention, an epoxy resin coating is fixedly provided on the outer side of the rubber anti-corrosion layer.

[0011] As a preferred embodiment of this invention, the top of the connecting rod is provided with a connecting hole for connecting the two cable bodies.

[0012] In a preferred embodiment of this invention, the sealing cap has four placement slots on its outer side and four sliding grooves inside. The sacrificial anode protection mechanism includes a sacrificial anode rod movably inserted into the placement slots, four connecting blocks fixedly connected to one side of the sealing cap, and a threaded sleeve threaded onto the outside of the connecting rod. The connecting blocks abut against the cable body. A movable plate is rotatably connected to the outside of the threaded sleeve. Four connecting rods are fixedly connected to one side of the movable plate. A locking block is fixedly connected to one end of each connecting rod. An insertion slot is provided on the top of the connecting block, and the sacrificial anode rod is movably inserted into the insertion slot. A locking groove is provided on one side of the sacrificial anode rod, and the locking block is movably locked into the locking groove.

[0013] In a preferred embodiment of this utility model, a bearing is fixedly sleeved inside the movable plate, a threaded sleeve is fixedly sleeved inside the inner ring of the bearing, a rubber sleeve is fixedly sleeved on the outer side of the threaded sleeve, an external thread is formed on the outer side of the connecting rod, and the threaded sleeve is threadedly sleeved on the outer side of the external thread.

[0014] As a preferred embodiment of this invention, the four card blocks are respectively slidably fitted into the corresponding sliding grooves.

[0015] In this utility model, a bridge cable anti-corrosion protection device is described. Through an epoxy resin coating, a protective film can be formed. The epoxy resin provides good adhesion and corrosion resistance, effectively isolating air, moisture and other corrosive media from contact with the cable, slowing down the corrosion rate of the cable body. The rubber anti-corrosion layer has good flexibility and elasticity, can adapt to the deformation of the cable body during use, and can effectively block rainwater, ultraviolet rays and other erosion of the cable, preventing rust and cracks from forming on the surface of the cable body. The zinc powder layer has good electrochemical activity and can form cathodic protection on the cable surface. Even if there is minor damage, the zinc powder layer can corrode preferentially, protecting the cable body. At the same time, through the setting of two stainless steel half rings, two connecting rings and sealing caps, the cable body can be comprehensively sealed and protected. Stainless steel has excellent corrosion resistance and strength, which can provide reliable physical protection for the cable body, preventing external water vapor, salt and other corrosive substances from contacting the cable, and can also withstand a certain amount of external impact, protecting the cable body from mechanical damage.

[0016] In this utility model, a bridge cable anti-corrosion protection device is described. A connecting block abuts against the cable body, and a connecting slot connects the sacrificial anode rod to the connecting block, thereby connecting the cable body to the sacrificial anode rod. The sacrificial anode rod can be made of magnesium alloy or zinc alloy. Because the electrode potential of magnesium alloy, zinc alloy, etc., is more negative than that of the cable body's metal material, in an electrolyte environment, the sacrificial anode rod will preferentially corrode, releasing electrons, thus providing cathodic protection for the cable and preventing corrosion. When a severely corroded sacrificial anode rod needs to be replaced after long-term use, the threaded sleeve is rotated via a rubber sleeve. The threaded sleeve rotates on the external thread of the connecting rod, thereby causing the moving plate, four connecting rods, and locking blocks to move outward and disengage from the locking slots, thus locking the sacrificial anode rod. At this point, the severely corroded sacrificial anode rod can be removed, and a new sacrificial anode rod can be placed in the placement slot. The threaded sleeve is then rotated in the opposite direction, causing the moving plate and four locking blocks to move inward and engage in the corresponding locking slots, thereby locking the sacrificial anode rod.

[0017] This utility model has a reasonable structural design. By setting up a sacrificial anode rod, a sealing cap, a connecting ring, a stainless steel half-ring, and an anti-corrosion composite layer, it can comprehensively protect the cable body from corrosion, making the cable body less susceptible to corrosion and damage, increasing the service life of the cable body, and facilitating the periodic disassembly and replacement of the sacrificial anode rod with severe corrosion, thereby improving the anti-corrosion effect and ensuring high reliability. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a bridge cable anti-corrosion protection device proposed in this utility model;

[0019] Figure 2This is a partial cross-sectional view of a bridge cable anti-corrosion protection device proposed in this utility model;

[0020] Figure 3 for Figure 2 A schematic diagram of the structure of part A;

[0021] Figure 4 This is a schematic diagram of the anti-corrosion composite layer of a bridge cable anti-corrosion protection device proposed in this utility model.

[0022] In the diagram: 1. Stainless steel semi-ring; 2. Hinge; 3. Connecting ring; 4. Sealing cap; 5. Sacrificial anode protection mechanism; 6. Connecting rod; 7. Connecting hole; 8. Cable body; 9. Anti-corrosion composite layer; 501. Connecting block; 502. Sacrificial anode rod; 503. Insertion groove; 504. External thread; 505. Bearing; 506. Threaded sleeve; 507. Rubber sleeve; 508. Connecting rod; 509. Moving plate; 510. Slide groove; 511. Locking block; 512. Locking groove; 513. Placement groove; 91. Zinc powder layer; 92. Rubber anti-corrosion layer; 93. Epoxy resin coating. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Reference Figures 1-4 A bridge cable corrosion protection device includes a bridge cable body 8, two stainless steel semi-rings 1 and two sealing caps 4. One end of the sealing cap 4 is fixedly connected to a connecting rod 6. A sacrificial anode protection mechanism 5 is provided between the connecting rod 6 and the sealing cap 4. An anti-corrosion composite layer 9 is fixedly provided on the outside of the cable body 8. The two stainless steel semi-rings 1 are rotatably connected to each other. The cable body 8 is movably sleeved inside the two stainless steel semi-rings 1. A connecting ring 3 is fixedly connected to one side of the sealing cap 4. The connecting ring 3 is threaded on the outside of the two stainless steel semi-rings 1. Two hinges 2 are provided on the lower stainless steel semi-ring 1. The two stainless steel semi-rings 1 are rotatably connected by the two hinges 2.

[0025] The above solution, through the setting of two stainless steel semi-rings 1, two connecting rings 3 and sealing caps 4, can comprehensively seal and protect the cable body 8. Stainless steel has excellent corrosion resistance and strength, which can provide reliable physical protection for the cable body 8, prevent external water vapor, salt and other corrosive substances from contacting the cable, and can also withstand a certain amount of external impact, protecting the cable body 8 from mechanical damage.

[0026] Furthermore, refer to Figure 4The anti-corrosion composite layer 9 includes a zinc powder layer 91 fixedly disposed on the outside of the cable body 8, a rubber anti-corrosion layer 92 fixedly connected to the outside of the zinc powder layer 91, and an epoxy resin coating 93 fixedly disposed on the outside of the rubber anti-corrosion layer 92.

[0027] The above solution involves an epoxy resin coating 93, which forms a protective film. The epoxy resin provides good adhesion and corrosion resistance, effectively isolating the cable from air, moisture, and other corrosive media, thus slowing down the corrosion rate of the cable body 8. The rubber anti-corrosion layer 92 has good flexibility and elasticity, adapting to the deformation of the cable body 8 during use, and effectively blocking rainwater, ultraviolet rays, and other erosions, preventing rust and cracks from forming on the surface of the cable body 8. The zinc powder layer 91 has good electrochemical activity and can form cathodic protection on the cable surface. Even if there is minor damage, the zinc powder layer 91 can preferentially corrode, protecting the cable body 8.

[0028] Furthermore, the top of the connecting rod 6 is provided with a connecting hole 7 for connecting the two cable bodies 8, which facilitates the connection of the two cable bodies 8.

[0029] Furthermore, refer to Figures 1-3 The sealing cover 4 has four placement slots 513 on its outer side and four sliding grooves 510 inside. The sacrificial anode protection mechanism 5 includes a sacrificial anode rod 502 that is movably inserted into the placement slot 513, four connecting blocks 501 that are fixedly connected to one side of the sealing cover 4, and a threaded sleeve 506 that is threaded onto the outside of the connecting rod 6. The connecting block 501 abuts against the cable body 8. A movable plate 509 is rotatably connected to the outside of the threaded sleeve 506. Four connecting rods 508 are fixedly connected to one side of the movable plate 509. A locking block 511 is fixedly connected to one end of the connecting rod 508. An insertion slot 503 is opened on the top of the connecting block 501. The sacrificial anode rod 502 is movably inserted into the insertion slot 503. A locking groove 512 is opened on one side of the sacrificial anode rod 502. The locking block 511 is movably locked into the locking groove 512.

[0030] The above solution involves connecting the cable body 8 to the cable block 501, and connecting the sacrificial anode rod 502 to the connecting block 501 via the insertion slot 503. This connects the cable body 8 to the sacrificial anode rod 502. The sacrificial anode rod 502 can be made of magnesium alloy or zinc alloy. Since the electrode potential of magnesium alloys and zinc alloys is more negative than that of the metallic material of the cable body 8, the sacrificial anode rod 502 will preferentially corrode in an electrolyte environment, releasing electrons and thus providing cathodic protection for the cable, preventing corrosion of the cable body 8. For prolonged use, the heavily corroded sacrificial anode rod 502 needs further maintenance. During replacement, by rotating the threaded sleeve 506 through the rubber sleeve 507, the threaded sleeve 506 rotates on the external thread 504 of the connecting rod 6, thereby driving the moving plate 509, the four connecting rods 508, and the locking block 511 to move outward and disengage from the locking groove 512, thus not locking the sacrificial anode rod 502. At this time, the heavily corroded sacrificial anode rod 502 can be removed, and then the new sacrificial anode rod 502 is placed into the placement groove 513. The threaded sleeve 506 is rotated in the opposite direction, causing the moving plate 509 and the four locking blocks 511 to move inward and engage in the corresponding locking groove 512, thereby locking the sacrificial anode rod 502.

[0031] Furthermore, a bearing 505 is fixedly fitted inside the movable plate 509, and a threaded sleeve 506 is fixedly fitted inside the inner ring of the bearing 505. A rubber sleeve 507 is fixedly fitted on the outer side of the threaded sleeve 506, and an external thread 504 is opened on the outer side of the connecting rod 6. The threaded sleeve 506 is threaded on the outer side of the external thread 504, which facilitates the rotation of the threaded sleeve 506. At the same time, it can support the threaded sleeve 506, making its rotation more stable and smooth.

[0032] Furthermore, the four locking blocks 511 are slidably fitted into the corresponding sliding grooves 510, which facilitates the guidance of the locking blocks 511 and makes their movement more stable and smooth.

[0033] In this invention, during use, an epoxy resin coating 93 forms a protective film. The epoxy resin provides good adhesion and corrosion resistance, effectively isolating the cable from air, moisture, and other corrosive media, thus slowing down the corrosion rate of the cable body 8. The rubber anti-corrosion layer 92 has good flexibility and elasticity, adapting to the deformation of the cable body 8 during use, and effectively blocking rainwater, ultraviolet rays, and other erosions on the cable, preventing rust and cracks from forming on the surface of the cable body 8. The zinc powder layer 91 has good electrochemical activity and can form cathodic protection on the cable surface. Even if there is minor damage, the zinc powder layer 91 can preferentially corrode, protecting the cable body 8.

[0034] Meanwhile, the cable body 8 can be fully sealed and protected by the two stainless steel semi-rings 1, the two connecting rings 3 and the sealing cap 4. Stainless steel has excellent corrosion resistance and strength, which can provide reliable physical protection for the cable body 8, prevent external water vapor, salt and other corrosive substances from contacting the cable, and can also withstand a certain amount of external impact, protecting the cable body 8 from mechanical damage.

[0035] The sacrificial anode rod 502 is connected to the cable body 8 via the connecting block 501 and the insertion slot 503, thereby connecting the cable body 8 to the sacrificial anode rod 502. The sacrificial anode rod 502 can be made of magnesium alloy or zinc alloy. Because the electrode potential of magnesium alloy, zinc alloy, etc., is more negative than that of the metal material of the cable body 8, the sacrificial anode rod 502 will preferentially corrode in the electrolyte environment, releasing electrons, thus providing cathodic protection for the cable and preventing corrosion of the cable body 8. When long-term use requires replacement of the severely corroded sacrificial anode rod 502, By rotating the threaded sleeve 506 through the rubber sleeve 507, the threaded sleeve 506 rotates on the external thread 504 of the connecting rod 6, thereby driving the moving plate 509, the four connecting rods 508, and the locking block 511 to move outward and disengage from the locking groove 512, thus not locking the sacrificial anode rod 502. At this time, the heavily corroded sacrificial anode rod 502 can be removed, and then a new sacrificial anode rod 502 can be placed into the placement groove 513. Rotating the threaded sleeve 506 in the opposite direction causes the moving plate 509 and the four locking blocks 511 to move inward and engage in the corresponding locking groove 512, thereby locking the sacrificial anode rod 502.

Claims

1. A bridge cable corrosion protection device, characterized in that, The cable body (8) for bridges, two stainless steel semi-rings (1) and two sealing caps (4) are included. A connecting rod (6) is fixedly connected to one end of the sealing cap (4). A sacrificial anode protection mechanism (5) is provided between the connecting rod (6) and the sealing cap (4). An anti-corrosion composite layer (9) is fixedly provided on the outside of the cable body (8). The two stainless steel semi-rings (1) are rotatably connected to each other. The cable body (8) is movably sleeved in the two stainless steel semi-rings (1). A connecting ring (3) is fixedly connected to one side of the sealing cap (4). The connecting ring (3) is threaded on the outside of the two stainless steel semi-rings (1).

2. The anti-corrosion protection device for bridge cables according to claim 1, characterized in that, Two hinges (2) are provided on the lower stainless steel half ring (1), and the two stainless steel half rings (1) are rotatably connected by the two hinges (2).

3. The anti-corrosion protection device for bridge cables according to claim 1, characterized in that, The anti-corrosion composite layer (9) includes a zinc powder layer (91) fixedly disposed on the outside of the cable body (8), and a rubber anti-corrosion layer (92) is fixedly connected to the outside of the zinc powder layer (91).

4. The anti-corrosion protection device for bridge cables according to claim 3, characterized in that, An epoxy resin coating (93) is fixedly provided on the outer side of the rubber anti-corrosion layer (92).

5. The anti-corrosion protection device for bridge cables according to claim 1, characterized in that, The top of the connecting rod (6) is provided with a connecting hole (7) for connecting the two cable bodies (8).

6. The anti-corrosion protection device for bridge cables according to claim 1, characterized in that, The sealing cap (4) has four placement slots (513) on its outer side and four sliding grooves (510) inside. The sacrificial anode protection mechanism (5) includes a sacrificial anode rod (502) that is movably inserted into the placement slot (513), four connecting blocks (501) that are fixedly connected to one side of the sealing cap (4), and a threaded sleeve (506) that is threaded onto the outside of the connecting rod (6). The connecting blocks (501) abut against the cable body (8), and the threaded sleeve (506) A movable plate (509) is rotatably connected to the outside of the connecting block (501). Four connecting rods (508) are fixedly connected to one side of the movable plate (509). A locking block (511) is fixedly connected to one end of the connecting rod (508). A plug-in groove (503) is opened on the top of the connecting block (501). The sacrificial anode rod (502) is movably inserted into the plug-in groove (503). A locking groove (512) is opened on one side of the sacrificial anode rod (502). The locking block (511) is movably locked into the locking groove (512).

7. A bridge cable corrosion protection device according to claim 6, characterized in that, The movable plate (509) is fixedly fitted with a bearing (505), and the threaded sleeve (506) is fixedly fitted inside the inner ring of the bearing (505). The outer side of the threaded sleeve (506) is fixedly fitted with a rubber sleeve (507). The outer side of the connecting rod (6) is provided with an external thread (504), and the threaded sleeve (506) is threaded on the outer side of the external thread (504).

8. A bridge cable corrosion protection device according to claim 6, characterized in that, The four card blocks (511) are respectively slidably fitted into the corresponding grooves (510).

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