Bridge cable corrosion monitor

Abstract

The utility model relates to bridge cable monitoring technical field especially a bridge cable corrosion monitor, including clamp, the clamp is provided with two, two the clamp is through fixed structure and is set in the same cable's periphery, the inside setting of clamp is provided with two clamps, two the clamps between opposite end fixedly connected with sensing unit, two sensing unit is connected with monitor, the clamps with the clamp between through support structure sensing unit is fixed in the cable periphery, the utility model discloses setting fixed structure on the opening end of clamp, the setting of support structure makes two clamps in a certain range through the elastic adjustment mode adaptation different diameter cable, and through the elastic adjustment can prevent when clamping the cable of diameter bigger, spring exerts greater support force to the clamp, leads to sensor long -time heavy pressure and accelerates the wearing and tearing of influence service life.

Description

Technical Field

[0001] This utility model relates to the field of bridge cable monitoring technology, and in particular to a bridge cable corrosion monitor. Background Technology

[0002] A bridge cable corrosion monitor is an intelligent sensing device specifically designed for real-time, online monitoring of the corrosion status of the steel wires inside the cables of cable-stayed or suspension bridges. It is usually installed at critical parts of the cables and continuously tracks the corrosion rate and degree of the steel wires, as well as environmental factors (such as temperature and humidity) through electrochemical, acoustic, or fiber optic sensing technologies. When the corrosion index exceeds the safety threshold, the system will immediately issue an early warning.

[0003] Two sensing units can be connected to a monitor, forming a complete loop between the two sensing units and the monitor to monitor cable corrosion. For example, Chinese Patent Publication No. CN220188329U discloses a bridge cable corrosion monitor, including a bridge deck. Its features include a support column at the upper center of the bridge deck, a first mounting base on the outer side of the support column, a cable bundle on the upper outer side of the first mounting base, and the other end of the cable bundle on a second mounting base located at the upper end of the bridge deck. A monitor is located on the lower outer side of the first mounting base, and an antenna is mounted on the upper end of the monitor. Monitoring mechanisms are located at both the upper and lower ends of the monitor. This invention, through its monitoring mechanism design, facilitates the monitoring of the degree of corrosion of the cable bundle, enabling timely maintenance and improving bridge safety. Furthermore, each connection point of the cable bundle is equipped with two sets of electrode sensors, allowing detection even if one set of electrode sensors fails, thus improving the stability and reliability of the detection.

[0004] In actual operation, the two clamping plates are held on both sides of the cable by the elastic support force provided by the spring. However, considering that the compression force of the spring cannot be adjusted, when the diameter of the cable is large, the clamping plates need to open more to accommodate it, which causes the compression spring to be over-compressed and generates huge clamping force. Excessive clamping force may affect the service life of the sensor over a long period of time. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies that cannot adjust the compression force of springs, and to propose a bridge cable corrosion monitor.

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

[0007] Design a bridge cable corrosion monitor, including clamps, wherein two clamps are provided and the two clamps are sleeved on the periphery of the same cable by a fixing structure;

[0008] Two clamping plates are provided inside the fixture, and a sensing unit is fixedly connected to each of the two clamping plates at opposite ends. The two sensing units are connected to a monitor.

[0009] The sensing unit is fixed to the periphery of the cable by a support structure between the clamp and the fixture.

[0010] Furthermore, the fixing structure includes a flap, the clamp has a clearance opening, and the flap is rotatably connected to the two walls of the opening via a shaft and a torsion spring. The clamp is also provided with a stop on the inner wall for resisting the flap.

[0011] The free ends of both flaps extend outward relative to each other to form a first guide section.

[0012] Furthermore, the two clamps are arranged opposite each other, and both extend outward from their top ends to form a second guide portion.

[0013] Furthermore, the support structure includes a support rod, at least one of the support rods is fixedly connected to the back of the clamping plate, the support rod is slidably connected to the clamp, and a compression spring is sleeved around the support rod between the clamping plate and the clamp.

[0014] Furthermore, the free end of the support rod is evenly distributed with several annular portions, and its free end is also provided with a first deformation groove penetrating the annular portions, and the annular portions are slidably connected to the clamp.

[0015] Furthermore, the support structure also includes an elastic part, which has a T-shaped cross-section and is slidably connected to the periphery of the support rod;

[0016] The elastic part has a second deformation groove at the annular protrusion end and a retaining groove on the inner wall of the annular protrusion end. The elastic part is engaged with the outer periphery of the annular part through the retaining groove and also abuts against the outer wall of the clamp.

[0017] Furthermore, the elastic part is provided with the annular portion on the periphery of the annular protrusion end and on one side of the second deformation groove. The end periphery of the elastic part is also provided with a retaining ring, which has an opening and is locked between the annular portion of the elastic part and the annular portion through the opening.

[0018] The bridge cable corrosion monitor proposed in this utility model has the following advantages: In this utility model, a fixing structure is provided on the open end of the clamp. On the one hand, the two flaps in the fixing structure can be installed by one hand under the action of the first guide and the torsion spring, so that the operator can pick up other parts with the other hand. On the other hand, the setting of the fixing structure avoids the situation where the entire clamp falls when the clamps are separated from the cable in case of accident.

[0019] In addition, the support structure allows the two clamps to be adapted to cables of different diameters within a certain range through elastic adjustment. Furthermore, the elastic adjustment can prevent the spring from applying excessive support force to the clamps when clamping cables of larger diameters, which would cause the sensor to be subjected to excessive pressure for a long time, accelerate wear, and affect its service life. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a side view of the present invention;

[0022] Figure 3 This is an exploded view of the support structure of this utility model;

[0023] Figure 4 for Figure 3 A magnified structural diagram of area A;

[0024] Figure 5 This is a cross-sectional view of the support structure of this utility model.

[0025] In the diagram: 1. Clamp; 2. Fixing structure; 21. Flip plate; 22. Torsion spring; 23. Stop; 24. First guide; 3. Clamping plate; 31. Second guide; 4. Sensing unit; 5. Support structure; 51. Support rod; 52. Snap ring; 53. Compression spring; 54. Annular part; 55. First deformation groove; 56. Elastic part; 57. Second deformation groove; 58. Snap slot. Detailed Implementation

[0026] 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.

[0027] Reference Figure 1-5 A bridge cable corrosion monitor includes clamps 1, two clamps 1 are provided, and the two clamps 1 are sleeved on the periphery of the same cable by a fixing structure 2;

[0028] Two clamping plates 3 are provided inside the clamp 1. Sensing units 4 are fixedly connected to the opposite ends of the two clamping plates 3. The two sensing units 4 are connected to the monitor.

[0029] The sensing unit 4 is fixed to the outside of the cable by the support structure 5 between the clamping plate 3 and the clamp 1.

[0030] In some embodiments, the sensing unit 4 is an electrode sensor or a resistance sensor. In the prior art, the sensing unit 4 is clamped on the periphery of the cable by the clamp 1 and the clamp 3, and the sensing unit 4 is also connected to the monitor by the wire. Then, the two pairs of electrode sensors at different positions of the monitor form a detection circuit with the cable, thereby detecting the magnitude of the potential generated by the corrosion of the cable or the magnitude of the potential gradient formed to determine whether the cable bundle is corroded or the degree of corrosion. The specific operation and principle are all prior art, and will not be described in detail here.

[0031] Furthermore, the fixing structure 2 includes a flap 21, and the clamp 1 has a clearance opening. The flap 21 is rotatably connected to the two walls of the opening via a shaft and a torsion spring 22. The clamp 1 is also provided with a stop 23 on its inner wall for abutting the flap 21.

[0032] The free ends of the two flaps 21 extend outward relative to each other to form a first guide portion 24.

[0033] Furthermore, the two clamping plates 3 are arranged opposite each other, and both of them extend outward from their top ends to form a second guide portion 31.

[0034] In this embodiment, refer to Figure 1 , 2 As shown, in the initial position, the flap 21 flips inward under the action of the torsion spring 22 and abuts against the stop part 23. It is easy to understand that when the clamp 1 is fitted around the cable, the first guide part 24 slides against the cable through the curved guide arc surface, and due to the force of the pressure, the two first guide parts 24 drive the corresponding flap 21 to flip and avoid the cable.

[0035] Specifically, this allows the operator to operate with one hand without affecting the other hand's ability to pick up other parts. On the other hand, the two flaps 21 can also prevent the entire clamp 1 from falling when the two clamps 3 accidentally separate from the cable.

[0036] More specifically, the second guide part 31 has the same structure as the first guide part 24. When the second guide part 31 comes into contact with the cable, the clamping plate 3 slides to avoid it under the action of the support rod 51 and the compression spring 53.

[0037] More specifically, the support structure 5 includes a support rod 51, at least one of the support rods 51 is fixedly connected to the back of the clamping plate 3, the support rod 51 is slidably connected to the clamp 1, and a compression spring 53 is sleeved around the support rod 51 between the clamping plate 3 and the clamp 1.

[0038] In general, the free end of the support rod 51 is evenly distributed with several annular portions 54, and its free end is also provided with a first deformation groove 55 that penetrates the annular portions 54. The annular portions 54 are slidably connected to the clamp 1.

[0039] Furthermore, the support structure 5 also includes an elastic part 56, which has a T-shaped cross-section and is slidably connected to the periphery of the support rod 51.

[0040] The elastic part 56 has a second deformation groove 57 at the annular protrusion end and a slot 58 on the inner wall of the annular protrusion end. The elastic part 56 is engaged with the outer periphery of the annular part 54 through the slot 58 and also abuts against the outer wall of the clamp 1.

[0041] Finally, the elastic part 56 is provided with the annular part 54 on the periphery of the annular protrusion end and on one side of the second deformation groove 57. The end periphery of the elastic part 56 is also provided with a retaining ring 52, which has an opening and is locked between the annular part of the elastic part 56 and the annular part 54 through the opening.

[0042] In this embodiment, the support rod 51, the elastic part 56, and the retaining ring 52 are preferably made of materials with deformation capabilities such as rubber and plastic.

[0043] Among them, reference Figure 4 , 5 As shown, the compression force of the spring 53 is adjusted according to the diameter of the cable. First, the retaining ring 52 needs to be removed to prevent the retaining ring 52 from affecting the deformation of the elastic part 56 due to its limiting and fastening effect.

[0044] The elastic part 56 is directly slidable to move along the support rod 51. During the movement, the first deformation groove 55 and the second deformation groove 57 prevent the elastic part 56 from getting stuck with the annular part 54.

[0045] When the elastic part 56 slides to the appropriate position, it is locked in place by the slot 58 on the periphery of the corresponding annular part 54. The retaining ring 52 is installed, which covers the periphery of the first deformation groove 55. This can effectively prevent the elastic part 56 from deforming and ensure the stability between the elastic part 56 and the support rod 51.

[0046] Working method: Adjust the compression force of the compression springs 53 on both sides according to the diameter of the cable. First, remove the retaining ring 52 and slide the elastic part 56 directly. After the elastic part 56 is engaged with the corresponding ring part 54 through the groove 58, install the retaining ring 52.

[0047] Then, the clamp 1 slides against the cable through the first guide part 24, and during the sliding process, the first guide part 24 is driven by force to flip the flap 21 to avoid the cable. The second guide part 31 is the same. After the cable is placed between the two clamps 3, the flap 21 and the clamp 3 are reset under the drive of the torsion spring 22 and the compression spring 53, respectively.

[0048] Finally, the two sensing units 4 work with the monitor to monitor the corrosion of the cable.

[0049] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A bridge cable corrosion monitor, comprising a clamp (1), characterized in that: Two clamps (1) are provided, and the two clamps (1) are sleeved on the outside of the same cable through a fixing structure (2); Two clamping plates (3) are provided inside the clamp (1), and a sensing unit (4) is fixedly connected to each of the two clamping plates (3) at opposite ends. The two sensing units (4) are connected to the monitor. The sensing unit (4) is fixed to the outside of the cable by a support structure (5) between the clamp (3) and the clamp (1).

2. The bridge cable corrosion monitor according to claim 1, characterized in that: The fixing structure (2) includes a flap (21), and the clamp (1) has a clearance opening. The flap (21) is rotatably connected to the two walls of the opening by a shaft and a torsion spring (22). The clamp (1) is also provided with a stop (23) on the inner wall for abutting the flap (21). The free ends of the two flaps (21) extend outward relative to each other to form a first guide portion (24).

3. The bridge cable corrosion monitor according to claim 1, characterized in that: The two clamps (3) are arranged opposite each other, and both extend outward from their top ends to form a second guide portion (31).

4. A bridge cable corrosion monitor according to claim 1, characterized in that: The support structure (5) includes a support rod (51). At least one support rod (51) is fixedly connected to the back of the clamp (3). The support rod (51) is slidably connected to the clamp (1). A compression spring (53) is sleeved around the support rod (51) between the clamp (3) and the clamp (1).

5. A bridge cable corrosion monitor according to claim 4, characterized in that: The free end of the support rod (51) is evenly distributed with several annular portions (54), and its free end is also provided with a first deformation groove (55) that penetrates the annular portion (54). The annular portion (54) is slidably connected to the clamp (1).

6. A bridge cable corrosion monitor according to claim 5, characterized in that: The support structure (5) further includes an elastic part (56), which has a T-shaped cross-section and is slidably connected to the periphery of the support rod (51). The elastic part (56) has a second deformation groove (57) at the annular protrusion end and a slot (58) on the inner wall of the annular protrusion end. The elastic part (56) is engaged with the periphery of the annular part (54) through the slot (58) and also abuts against the outer wall of the clamp (1).

7. A bridge cable corrosion monitor according to claim 6, characterized in that: The elastic part (56) is provided with the annular part (54) on the periphery of the annular protrusion end and on one side of the second deformation groove (57). The end periphery of the elastic part (56) is also provided with a retaining ring (52). The retaining ring (52) has an opening, which is locked between the annular part of the elastic part (56) and the annular part (54) through the opening.

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