Bridge cable corrosion factor blocking and corrosion protection device

Abstract

The application discloses bridge cable corrosion factor blocking and corrosion protection device, and particularly relates to the technical field of bridge cable maintenance. The device comprises a plurality of HDPE sheaths, gaps between three adjacent HDPE sheaths form a working area similar to a triangle, each HDPE sheath is provided with an arc-shaped sliding rail in the working area, a fixed column is arranged at the center of the working area, three first permanent magnets and a first humidity sensor are arranged on the fixed column at intervals, the three first humidity sensors are respectively directed to three vertices of the working area, each arc-shaped sliding rail is provided with a positioning column, each positioning column is provided with a second permanent magnet generating repulsive force with the corresponding first permanent magnet, the second permanent magnet is arranged opposite to the first permanent magnet, and the positioning column is provided with a first electric heating sheet. The application solves the problem that corrosion factors invade the internal space of the cable in the form of gaseous or liquid state with water vapor or accumulated water, and prolongs the service life of the bridge cable.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bridge cable maintenance, in particular to a bridge cable corrosion factor blocking and corrosion protection device. BACKGROUND

[0002] As the main load-bearing component of cable-supported bridges (such as cable-stayed bridges, suspension bridges, and half-through arch bridges), cables are the key to the overall stress and stable operation of the bridge. Long-term service of the cables will gradually cause corrosion damage, which will cause stress redistribution in the internal steel wires of the cable, exacerbate the corrosion fatigue coupling effect of the cable, and seriously threaten the safe operation of the cable-supported bridge.

[0003] Engineering practice shows that the corrosion of the cable often starts from some special structural positions, such as the spliced joints of the cable anchor head (such as the human spliced and welded parts that are prone to process defects and have higher service strength), and the HDPE sheath of the cable anchorage segment (the HDPE sheath of the anchorage segment often breaks due to complex deformation). These parts become the primary channel for corrosion factors (such as chloride ions) to invade the cable. Corrosion factors invade the internal space of the cable in the form of water vapor or accumulated water, and diffuse along the gaps between the internal steel wires of the cable in the cross section of the cable. Therefore, there is an urgent need for a device that can block the diffusion of corrosion factors between the internal steel wires of the cable and provide protection to the cable body. SUMMARY

[0004] The present application aims to provide a bridge cable corrosion factor blocking and corrosion protection device, which solves the problem of corrosion factors invading the internal space of the cable in the form of water vapor or accumulated water.

[0005] In order to achieve the above purpose, the technical scheme of the present application is as follows: a bridge cable corrosion factor blocking and corrosion protection device, comprising a plurality of HDPE sheaths wrapped around the cable body composed of a plurality of steel wires, the gap between three adjacent HDPE sheaths forming a triangular working area, each HDPE sheath being provided with an arc-shaped sliding rail located in the working area, the center of the working area being provided with a fixed column connected with the HDPE sheath, the fixed column being provided with three first permanent magnets and a first humidity sensor at intervals, the three first humidity sensors being respectively directed towards the three vertices of the working area, each arc-shaped sliding rail being provided with a positioning column, each positioning column being provided with a second permanent magnet generating a repulsive force with the corresponding first permanent magnet, the second permanent magnet being arranged opposite to the first permanent magnet, and the positioning column being provided with a first electric heating sheet.

[0006] Further, the arc-shaped slide rail is symmetrically provided with a working vehicle distributed on both sides of the positioning column, the first electric heating sheet is arranged on the working vehicle, the working vehicle is provided with a moving assembly, the moving assembly can drive two adjacent working vehicles to move to the vertex of the working area, and the two working vehicles can abut against each other after moving by the moving assembly.

[0007] Further, the moving assembly comprises a third permanent magnet symmetrically arranged on each positioning column, each third permanent magnet is magnetically attached to a fourth permanent magnet, the fourth permanent magnet is arranged on the corresponding working vehicle, each working vehicle is further provided with a first sliding groove, the first sliding groove is provided with an electromagnet, the electromagnet is fixedly connected to the corresponding positioning column through a connecting rod, each electromagnet is electrically connected to a power supply, the power supply is electrically connected to the first humidity sensor, the electromagnet has an adsorption force on the fourth permanent magnet greater than that of the third permanent magnet on the fourth permanent magnet after being powered on, and the fourth permanent magnet can be reset under the adsorption force of the third permanent magnet after the electromagnet is powered off.

[0008] Through the above arrangement, when the first humidity sensor detects that the humidity in the working area is greater than the preset value, the corresponding first humidity sensor powers on the electromagnet through the power supply, and the fourth permanent magnet is attracted by the electromagnet, so that the working vehicle is driven by the fourth permanent magnet to move to the corresponding vertex of the working area, and two adjacent working vehicles abut against each other after moving a distance, so that the working vehicle can separate the working area close to the damaged part, reduce the diffusion amount and diffusion speed of air and corrosion factors from the outside of the damaged part into the working area, and heat and dry the working area by the first electric heating sheet, so as to maintain a dry working environment in the working area, and also prevent the diffusion of corrosion factors.

[0009] Further, the first electric heating sheet is arranged on the top of the working vehicle, and a second electric heating sheet is attached to one side of the working vehicle facing the vertex of the working area; the positioning column is provided with a second humidity sensor electrically connected to two first electric heating sheets adjacent to the corresponding side, and three third humidity sensors are arranged at the three vertices of the working area, and the three third humidity sensors are respectively electrically connected to two second electric heating sheets adjacent to the corresponding side.

[0010] Further, each arc-shaped slide rail is provided with a pressure switch, each pressure switch is located on the movement track of the corresponding working vehicle, the pressure switch is electrically connected to the first humidity sensor, the second humidity sensor and the third humidity sensor, and the pressure switch is used to close the circuit of the first humidity sensor and simultaneously open the circuits of the second humidity sensor and the third humidity sensor.

[0011] Through the above setting, after the working vehicle separates the working area of the damaged part into two parts, the second humidity sensor monitors the space inside the separated part (i.e. the area towards the fixed column side), and the first electric heating sheet can be controlled by the second humidity sensor to perform heating treatment, while the first humidity sensor monitors the space outside the separated part (i.e. the area towards the damaged part side), and the second electric heating sheet can be controlled by the second humidity sensor to perform heating treatment, effectively preventing the spread of corrosion factors.

[0012] Further, the steel wires in the cable bodies adjacent to the two sides of the first humidity sensor are electrically connected with the electromagnet, the second humidity sensor and the third humidity sensor through corresponding power sources.

[0013] Through the above setting, when the cable is in a high humidity environment, the circuits where the first humidity sensor, the second humidity sensor or the third humidity sensor are located will not be connected at the same time, at which time an electric current is generated by the power source, and the cable body is then subjected to cathodic protection by the external current.

[0014] Further, a second sliding groove is formed in each positioning column, and a sliding rod is slidably connected in the second sliding groove, and the three sliding rods are connected at the end of the fixed column.

[0015] Through the above setting, the sliding rod and the second sliding groove can limit the offset amount and offset direction of the fixed column, thereby facilitating the maintenance of the relative positions of the three first permanent magnets and the second permanent magnet, avoiding the deformation of the working area when the HDPE sheath moves unilaterally under external force, and facilitating the buffering or offset of a part of external force by the change of the repulsive force of the first permanent magnet and the second permanent magnet, thereby maintaining the stability of the working area.

[0016] Compared with the prior art, the beneficial effects of the present scheme are:

[0017] 1. According to the real-time change of the humidity in the internal space of the serving cable, the mutual cooperation between the humidity sensor and the electric heating sheet can block the diffusion of corrosion factors between the steel wires in the cable body without affecting the normal service conditions of the steel wires, and the mutual cooperation between the humidity sensor and the power source can provide cathodic protection to the cable body by an external current.

[0018] 2. When invaded by corrosion factors, the present scheme can prevent the corrosion factors from further transmitting into the internal space of the cable, thereby avoiding the corrosion damage of the steel wires in the internal space of the cable body; secondly, the working area of the damaged part is separated into internal and external spaces by the working vehicle, the internal and external spaces are heated separately or simultaneously according to the humidity conditions of different areas, and the heating can be stopped as needed, which greatly reduces the diffusion probability of corrosion factors.

[0019] 3, the scheme effectively reduces the mutual extrusion damage of the cable, and enhances the stability of the working performance of the steel wire in the service state of the bridge cable. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a schematic diagram of the bridge cable corrosion factor blocking and corrosion protection device of the present application;

[0021] Figure 2 is Figure 1 is a local enlarged view of A in figure

[0022] Figure 3 is Figure 2 is a local enlarged view of the slide bar in figure

[0023] Figure 4 is a circuit diagram of the bridge cable corrosion factor blocking and corrosion protection device of the present application. DETAILED DESCRIPTION

[0024] The present application will be further described in detail by specific embodiments:

[0025] The reference signs in the drawings of the specification include: cable body 1, arc-shaped slide rail 2, working area 3, fixed column 4, first permanent magnet 5, first humidity sensor 6, positioning column 7, second permanent magnet 8, slide bar 9, working car 10, first electric heating sheet 11, second electric heating sheet 12, second humidity sensor 13, third humidity sensor 14, pressure switch 15, third permanent magnet 16, fourth permanent magnet 17, first slide groove 18, electromagnet 19, connecting rod 20, power supply 21, HDPE sheath 22.

[0026] EMBODIMENT

[0027] As Figures 1 to 4The bridge cable corrosion factor blocking and corrosion protection device shown, including a plurality of coated by a plurality of steel wire consisting of cable body 1 HDPE sheath 22, the gap between three adjacent HDPE sheaths 22 is enclosed to form a triangular working area 3, each HDPE sheath 22 is provided with an arc-shaped slide rail 2 located in the working area 3, the center of the working area 3 is provided with a fixed column 4 connected with the HDPE sheath 22, the fixed column 4 is provided with three first permanent magnets 5 and first humidity sensors 6 at intervals, three first permanent magnets 5 and first humidity sensors 6 are alternately arranged on the side wall of the fixed column 4, three first humidity sensors 6 are respectively directed to the three vertices of the working area 3. Each arc-shaped slide rail 2 is provided with a positioning column 7, the positioning column 7 is fixedly arranged in the middle of the corresponding arc-shaped slide rail 2 in the working area 3, and each positioning column 7 is provided with a second permanent magnet 8 generating repulsive force with the corresponding first permanent magnet 5, and the second permanent magnet 8 is arranged opposite to the first permanent magnet 5. The front side of each positioning column 7 is provided with a second sliding groove, and a sliding rod 9 is slidably connected in the second sliding groove, and three sliding rods 9 are connected at the center of the front side of the fixed column 4.

[0028] Each arc-shaped slide rail 2 is provided with a working vehicle 10 located on both sides of the positioning column 7, and the top of the working vehicle 10 is provided with a first electric heating piece 11, and the side of the working vehicle 10 facing the vertex of the working area 3 is adhered with a second electric heating piece 12; The side wall of the positioning column 7 is embedded with a second humidity sensor 13 electrically connected with the two first electric heating pieces 11 adjacent to the corresponding side, and the three vertices of the working area 3 are provided with third humidity sensors 14, and the three third humidity sensors 14 are electrically connected with the two second electric heating pieces 12 adjacent to the corresponding side. Each arc-shaped slide rail 2 is provided with a pressure switch 15, each pressure switch 15 is connected with a fixed rod fixedly arranged on the arc-shaped slide rail 2, each pressure switch 15 is located on the movement track of the corresponding working vehicle 10, and the pressure switch 15 is electrically connected with the first humidity sensor 6, the second humidity sensor 13 and the third humidity sensor 14, and the first humidity sensor 6 is closed, and the second humidity sensor 13 and the third humidity sensor 14 are opened at the same time through the pressure switch 15.

[0029] The working vehicle 10 is also provided with a moving assembly capable of moving the adjacent two working vehicles 10 to the vertex of the working area 3, and the two working vehicles 10 can abut after moving by the moving assembly. The moving assembly comprises a third permanent magnet 16 symmetrically arranged on the left and right sides of each positioning column 7, each third permanent magnet 16 is magnetically attached with a fourth permanent magnet 17, each fourth permanent magnet 17 is arranged on the corresponding working vehicle 10, and a first sliding groove 18 is arranged on the top of each working vehicle 10. The first sliding groove 18 is slidably connected with an L-shaped connecting rod 20, one end of the connecting rod 20 is fixedly connected with the corresponding positioning column 7, the other end of the connecting rod 20 is fixedly connected with an electromagnet 19, and the working vehicle 10 is also provided with a sliding rail for the electromagnet 19 to slide. Each electromagnet 19 and the corresponding fourth permanent magnet 17 are arranged on the two sides of the sliding rail, respectively, each electromagnet 19 is electrically connected with the first humidity sensor 6 on the corresponding side, the adsorption force of the electromagnet 19 to the fourth permanent magnet 17 is greater than the adsorption force of the third permanent magnet 16 to the fourth permanent magnet 17 when the electromagnet 19 is powered on, and the third permanent magnet 16 can adsorb and reset the fourth permanent magnet 17 when the electromagnet 19 is powered off. Each fixed column 4 is embedded with a power supply 21, and the three power supplies 21 are electrically connected with the corresponding first humidity sensor 6, second humidity sensor 13, third humidity sensor 14, electromagnet 19, first electric heating piece 11, second electric heating piece 12 and pressure switch 15. In the embodiment, the plurality of steel wires in the cable cable body 1 on the adjacent two sides of the first humidity sensor 6 are electrically connected with the electromagnet 19, the second humidity sensor and the third humidity sensor 14 through the power supply 21 in the corresponding fixed column 4.

[0030] The working process of the embodiment is as follows:

[0031] The initial state of the device: the pressure switch 15 is electrically connected to the circuit where the first humidity sensor 6 is located, the circuit where the first humidity sensor 6 is located is not connected, at the same time, the circuits where the second humidity sensor 13 and the third humidity sensor 14 are located are in a disconnected state; the electromagnet 19 is not powered on, and the third permanent magnet 16 adsorbs the fourth permanent magnet 17 near the positioning column 7 at this time.

[0032] When the cable is working normally, the first permanent magnet 5 on the fixed column 4 and the second permanent magnet 8 on the positioning column 7 are used to keep the size of the working area 3 between the adjacent three cable bodies 1 as consistent as possible, and the magnetic force of the first permanent magnet 5 and the second permanent magnet 8 is used to change the resistance in the opposite direction when the external load changes when the cable is working, thereby effectively reducing the movement of the cable body 1, which is beneficial to protect the integrity of the HDPE sheath 22 and effectively avoid the extrusion damage of the steel wire in the cable body 1.

[0033] When the cable appears damage, at this time the external corrosion factors (water, mist, etc.) enter the cable internal space through the damage, the first humidity sensor 6 can monitor the environmental humidity of the center of the working area 3. When it exceeds the preset value, the circuit of the corresponding side where the first humidity sensor 6 is located is connected, at this time the corresponding two electromagnets 19 of the side are powered on by the power supply 21, and the cable body 1 adjacent to the corresponding first humidity sensor 6 can also be powered on. The electromagnet 19 can attract the fourth permanent magnet 17 and the working car 10 by the magnetic force generated after being powered on, so that the working car 10 approaches the damage; at the same time, the steel wire in the cable body 1 can be cathodically protected by the external current in the high humidity environment. After the working car 10 moves to the pressure switch 15 and triggers the pressure switch 15, the top of the two working cars 10 near the damage abuts. The working area 3 near the damage is divided into the external working area 3 near the damage and the internal working area 3 far from the damage by the two working cars 10 adjacent to the same side, at this time the first electric heating piece 11 is located in the internal working area 3, and the second electric heating piece 12 is located in the external working area 3. After the pressure switch 15 is triggered, the circuit where the first humidity sensor 6 is located is disconnected, and the circuit where the second humidity sensor 13 and the third humidity sensor 14 are located is connected, so that the second humidity sensor 13 and the third humidity sensor 14 start monitoring the humidity of the working area 3 of the corresponding area. If the humidity of the internal working area 3 is greater than the preset value of the second humidity sensor 13, the circuit where the second humidity sensor 13 is located is connected, at this time the first electric heating piece 11 is turned on, and the first electric heating piece 11 can effectively and quickly heat and dry the internal working area 3; if the humidity of the external working area 3 is greater than the preset value of the third humidity sensor 14, the circuit where the third humidity sensor 14 is located is connected, at this time the second electric heating piece 12 is turned on, and the second electric heating piece 12 can effectively and quickly heat and dry the internal working area 3, preventing the diffusion of the corrosion factor and ensuring the stability of the cable working environment. When the humidity value of the corresponding area is less than the preset value of the second humidity sensor 13 and the third humidity sensor 14, the circuit where the second humidity sensor 13 or the third humidity sensor 14 is located is disconnected, at this time the first electric heating piece 11 or the second electric heating piece 12 stops heating. At the same time, when the first humidity sensor 6 monitors that the humidity value of the center of the working area 3 is less than the preset value, the circuit where the first humidity sensor 6 is located is not connected, at this time the magnetic force of the electromagnet 19 disappears, and the fourth permanent magnet 17 is reset under the attraction of the third permanent magnet 16.

[0034] The above is only the embodiment of the present application, and the common knowledge of the specific structure and / or characteristics in the scheme is not described in detail. It should be pointed out that for those skilled in the art, without departing from the structure of the present application, a number of modifications and improvements can also be made, which should also be considered as the protection scope of the present application, which will not affect the effect and practicality of the patent. The protection scope claimed in the present application should be subject to the content of its claims, and the specific implementation mode and the like recorded in the specification can be used to explain the content of the claims.

Claims

1. Bridge cable corrosion factor blocking and corrosion protection device, characterized in that: The utility model provides a kind of cable crane, including multiple HDPE sheaths that are coated in the cable body consisting of multiple steel wires, the gap of three adjacent HDPE sheaths is enclosed to form triangular working area, arc slide rail in working area is provided on each HDPE sheath, the center of working area is provided with fixed column connected with HDPE sheath, first permanent magnet and first humidity sensor are spaced apart on fixed column, three first humidity sensors are respectively towards three vertices of working area, positioning column is provided on each arc slide rail, second permanent magnet is provided on each positioning column, and second permanent magnet generates repulsive force with corresponding first permanent magnet, second permanent magnet is oppositely arranged with first permanent magnet, working car is symmetrically provided on each arc slide rail and distributed on both sides of positioning column, first electric heating sheet is provided on working car.

2. The bridge cable corrosion factor break and corrosion protection device of claim 1, wherein: The utility model provides a kind of cable crane, including multiple HDPE sheaths that are coated in the cable body consisting of multiple steel wires, the gap of three adjacent HDPE sheaths is enclosed to form triangular working area, arc slide rail in working area is provided on each HDPE sheath, the center of working area is provided with fixed column connected with HDPE sheath, first permanent magnet and first humidity sensor are spaced apart on fixed column, three first humidity sensors are respectively towards three vertices of working area, positioning column is provided on each arc slide rail, second permanent magnet is provided on each positioning column, and second permanent magnet generates repulsive force with corresponding first permanent magnet, second permanent magnet is oppositely arranged with first permanent magnet, working car is symmetrically provided on each arc slide rail and distributed on both sides of positioning column, first electric heating sheet is provided on working car.

3. The bridge cable corrosion factor break and corrosion protection device of claim 2, wherein: The utility model provides a kind of cable crane, including multiple HDPE sheaths that are coated in the cable body consisting of multiple steel wires, the gap of three adjacent HDPE sheaths is enclosed to form triangular working area, arc slide rail in working area is provided on each HDPE sheath, the center of working area is provided with fixed column connected with HDPE sheath, first permanent magnet and first humidity sensor are spaced apart on fixed column, three first humidity sensors are respectively towards three vertices of working area, positioning column is provided on each arc slide rail, second permanent magnet is provided on each positioning column, and second permanent magnet generates repulsive force with corresponding first permanent magnet, second permanent magnet is oppositely arranged with first permanent magnet, working car is symmetrically provided on each arc slide rail and distributed on both sides of positioning column, first electric heating sheet is provided on working car.

4. The bridge cable corrosion factor break and corrosion protection device of claim 3, wherein: The utility model provides a kind of cable crane, including multiple HDPE sheaths that are coated in the cable body consisting of multiple steel wires, the gap of three adjacent HDPE sheaths is enclosed to form triangular working area, arc slide rail in working area is provided on each HDPE sheath, the center of working area is provided with fixed column connected with HDPE sheath, first permanent magnet and first humidity sensor are spaced apart on fixed column, three first humidity sensors are respectively towards three vertices of working area, positioning column is provided on each arc slide rail, second permanent magnet is provided on each positioning column, and second permanent magnet generates repulsive force with corresponding first permanent magnet, second permanent magnet is oppositely arranged with first permanent magnet, working car is symmetrically provided on each arc slide rail and distributed on both sides of positioning column, first electric heating sheet is provided on working car.

5. The bridge cable corrosion factor break and corrosion protection device of claim 4, wherein: Pressure switch is provided on each arc slide rail, and each pressure switch is located on the movement track of corresponding working car, and the pressure switch is electrically connected with first humidity sensor, second humidity sensor and third humidity sensor, and the pressure switch is used to close the circuit of first humidity sensor, and simultaneously open the circuit of second humidity sensor and third humidity sensor.

6. The bridge cable corrosion factor break and corrosion protection device of claim 5, wherein: Steel wire in cable body on the adjacent two sides of first humidity sensor is electrically connected with electromagnet, second humidity sensor and third humidity sensor through corresponding power supply.

7. The bridge cable corrosion factor blocking and corrosion protection apparatus of any one of claims 1-6, wherein: Second sliding groove is provided on each positioning column, and sliding rod is slidably connected in second sliding groove, and three sliding rods are connected at the end of fixed column.

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