Old building steel bar corrosion detection equipment

By building the steel bar body and sensor in the steel bar corrosion detection equipment in old buildings and providing power with a light energy plate, real-time and accurate monitoring of steel bar corrosion is achieved, and the problem of insufficient time-consuming, labor-intensive and accurate detection in the existing technology is solved, ensuring the sustainability and accuracy of detection.

CN120404561APending Publication Date: 2025-08-01SHENZHEN TAIKE TEST
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Patent Information

Application Number
CN202510677787.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-05-26
Publication Date
2025-08-01

AI Technical Summary

Technical Problem

The existing reinforcement corrosion detector can only perform a single personnel measurement, which is time-consuming and labor-intensive. The test results of personnel with different technical capabilities are uneven and cannot be warned in time, resulting in the corrosion of reinforcement steel in old buildings that may cause damage to concrete components.

Method used

It adopts a steel bar corrosion detection equipment for old buildings, built-in steel bar body, equipped with potential sensors and ultrasonic sensors, and uses light energy plates to provide continuous power, transmit data through guide rods and transmission bodies, real-time monitoring of the corrosion status of steel bars.

Benefits of technology

Real-time and accurate monitoring of steel bar corrosion is achieved, monitoring interruptions caused by traditional power depletion is avoided, monitoring is ensured, and detection is accurate, and timely warning function is provided.

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Abstract

The invention provides old building steel bar corrosion detection equipment, and relates to the technical field of steel bars, the old building steel bar corrosion detection equipment comprises a detection mechanism, the detection mechanism comprises a wallboard, the inner wall of the wallboard is provided with a steel bar body, the outer side of the steel bar body is provided with a potential sensor, and the outer side of the steel bar body is fixedly connected with the bottom end of the potential sensor; a second guide rod is arranged on one side of the potential sensor. The steel bar corrosion change is dynamic, in order to monitor the corrosion state of the steel bar body in real time, the steel bar body is connected into the wallboard, the potential sensor and the ultrasonic sensor are installed on the outer side of the steel bar body, then collected data are received by the first guide rod in a unified mode, and finally the steel bar corrosion state is monitored through the second guide rod. The transmission body transmits data to the detection equipment body, the potential sensor can measure the potential difference between the reinforcing steel bar and the surrounding environment, and the ultrasonic sensor can accurately measure the corrosion degree and range of the reinforcing steel bar in the reinforcing steel bar through ultrasonic waves.
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Description

Technical Field

[0001] The present invention relates to the technical field of steel bars, and particularly relates to a steel bar corrosion detection device for old buildings. Background Art

[0002] At present, such a device on the market is a steel bar corrosion detector, and its principle is to evaluate the corrosion degree of the internal structure by measuring the resistivity and corrosion rate of reinforced concrete components. Specifically, this detector utilizes the electrochemical changes that occur during the corrosion of steel bars. When the steel bar corrodes, the iron atoms on the surface of the steel bar lose electrons and form iron ions that enter the surrounding environment. At the same time, oxygen in the environment gains electrons and is reduced. This process causes a change in the potential in a local area, forming a micro-battery effect, and then generating an electric current.

[0003] In the existing technology, the steel bar corrosion detector can evaluate the corrosion degree of the steel bar by measuring the change of this current. At present, the device can only perform single-person measurements. The corrosion of steel bars is dynamic. If not discovered in time, the corrosion of steel bars will cause the concrete components to expand and crack, damage the concrete components, and ultimately seriously affect the reliability of the components. Single measurements are all carried out manually, which is time-consuming and laborious, and the test results of personnel with different technical capabilities vary greatly, and it is impossible to give early warnings in time. Summary of the Invention

[0004] The purpose of the present invention is to solve the deficiencies existing in the prior art and provide a steel bar corrosion detection device for old buildings.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions: A steel bar corrosion detection device for old buildings, comprising: a detection mechanism, an auxiliary mechanism is arranged on the inner wall of the detection mechanism, an adjustment mechanism is arranged on one side of the auxiliary mechanism, a detection mechanism is arranged on one side of the adjustment mechanism, the detection mechanism includes a wall panel, a steel bar body is arranged on the inner wall of the wall panel, a potential sensor is arranged on the outer side of the steel bar body, the outer side of the steel bar body is fixedly connected to the bottom end of the potential sensor, a second guide rod is arranged on one side of the potential sensor, one side of the potential sensor is fixedly connected to one end of the second guide rod, the other end of the second guide rod is provided with an ultrasonic sensor, the other end of the second guide rod is fixedly connected to the top side of the ultrasonic sensor, and the bottom side of the ultrasonic sensor is fixedly connected to the top side of the steel bar body.

[0006] As a preferred embodiment, the auxiliary mechanism includes a light energy panel, a side rod is arranged at one end of the light energy panel, one end of the light energy panel is rotatably connected to one side of the side rod, and an inner frame is arranged at one end of the bottom side of the side rod, and one end of the bottom side of the side rod is fixedly connected to the inner wall of the inner frame.

[0007] As a preferred embodiment, one end of the side rod is provided with a connecting rod. One end of the side rod is fixedly connected to one end of the connecting rod. The inner wall of the connecting rod is provided with a sliding rod, and the inner wall of the connecting rod is slidably connected through the outer side of the sliding rod.

[0008] As a preferred embodiment, one end of the sliding rod is provided with an L-shaped rod. One end of the sliding rod is slidably clamped with the inner wall of the L-shaped rod. One end of the L-shaped rod is provided with an equipment body, and one end of the L-shaped rod is fixedly connected to one side of the equipment body.

[0009] As a preferred embodiment, the adjusting mechanism includes a fixing plate. The inner side of the fixing plate is provided with a movable arm. The inner side of the fixing plate is rotatably connected to the bottom end of the movable arm. The top end of the movable arm is provided with a middle rod. The top end of the movable arm is rotatably connected to the bottom side of the middle rod. One end of the middle rod is provided with a movable disk. One end of the middle rod is rotatably connected to one end of the movable disk.

[0010] As a preferred embodiment, one side of the movable disk is provided with a sub-rod. One side of the movable disk is fixedly connected to one end of the sub-rod. The inner wall of the sub-rod is provided with a mother rod. The inner wall of the sub-rod is slidably connected through the outer side of the mother rod. The outer side of one end of the mother rod is slidably clamped with the inner wall of one side of the movable arm. One end of the movable disk is provided with a turning handle. One end of the movable disk is fixedly connected to one end of the turning handle.

[0011] As a preferred embodiment, the top end of the movable arm is rotatably connected to the bottom side of the light energy plate. The bottom side of the fixing plate is fixedly connected to one side of the wall panel.

[0012] As a preferred embodiment, one side of the top end of the potential sensor is provided with a first guide rod. The top end of the potential sensor is fixedly connected to one end of the first guide rod. One side of the middle part of the first guide rod is provided with a transmission body. One side of the middle part of the first guide rod is fixedly connected to one end of the transmission body.

[0013] As a preferred embodiment, a plug board is provided at the protruding part of one end of the transmission body. The protruding part of one end of the transmission body is clamped with the inner wall of the plug board. One end of the plug board is fixedly connected to one side of the equipment body.

[0014] As a preferred embodiment, one side of the equipment body is in contact with one side of the wall. The potential sensor and the ultrasonic sensor are connected to the light energy plate through wires.

[0015] Compared with the prior art, the advantages and positive effects of the present invention are as follows: 1. The change of steel bar corrosion is dynamic. In order to be able to monitor the corrosion state of the steel bar body in real time, the steel bar body is connected inside the wall panel, and a potential sensor and an ultrasonic sensor are installed outside the steel bar body. Then, the collected data is uniformly received by the first guide rod, and finally, the data is transmitted to the detection device body by the transmission body. The potential sensor can measure the potential difference between the steel bar and the surrounding environment, and the ultrasonic sensor uses the attenuation, reflection and other characteristic changes generated by corrosion when ultrasonic waves propagate inside the steel bar to accurately determine the degree and range of steel bar corrosion; 2. The sensor needs to rely on a power source during the monitoring process. Therefore, a light energy panel is connected to one side of the wall panel and connected to the two sensors, so that the sensor can continuously work during the monitoring process, ensuring that the sensor is always in a normal operating state. This avoids the monitoring interruption caused by the exhaustion of the traditional power supply and power failure, etc., and ensures the continuous tracking of the steel bar corrosion state. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of a steel bar corrosion detection device for old buildings provided by the present invention.

[0017] Figure 2 It is a schematic exploded structural diagram of the detection mechanism assembly of a steel bar corrosion detection device for old buildings provided by the present invention.

[0018] Figure 3 It is a schematic sectional structural diagram of the detection mechanism assembly of a steel bar corrosion detection device for old buildings provided by the present invention.

[0019] Figure 4 It is a schematic disassembled structural diagram of the detection mechanism assembly of a steel bar corrosion detection device for old buildings provided by the present invention.

[0020] Figure 5 It is a schematic top view structural diagram of the detection mechanism assembly of a steel bar corrosion detection device for old buildings provided by the present invention.

[0021] Figure 6 It is a schematic side view structural diagram of the auxiliary mechanism assembly of a steel bar corrosion detection device for old buildings provided by the present invention.

[0022] Figure 7 It is a schematic enlarged structural diagram of the adjustment mechanism assembly of a steel bar corrosion detection device for old buildings provided by the present invention.

[0023] Figure 8 It is a schematic distribution structural diagram of the adjustment mechanism assembly of a steel bar corrosion detection device for old buildings provided by the present invention.

[0024] Legend Explanation: 1. Detection mechanism; 11. Wall panel; 12. Reinforcement body; 13. Potential sensor; 14. First guide rod; 15. Second guide rod; 16. Ultrasonic sensor; 17. Transmission body; 18. Inner frame; 19. Insert plate; 110. Equipment body; 2. Auxiliary mechanism; 21. Light energy panel; 22. Side rod; 23. Connecting rod; 24. Slide rod; 25. L-shaped rod; 3. Adjusting mechanism; 31. Fixed plate; 32. Movable arm; 33. Middle rod; 34. Movable disk; 35. Sub-rod; 36. Mother rod; 37. Rotating handle. Specific implementation mode

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0026] Example 1: As Figures 1 - 8As shown in the figure, the present invention provides a technical solution: an old building steel bar corrosion detection device, including: a detection mechanism 1, an auxiliary mechanism 2 is arranged on the inner wall of the detection mechanism 1, an adjustment mechanism 3 is arranged on one side of the auxiliary mechanism 2, and a detection mechanism 1 is arranged on one side of the adjustment mechanism 3. The detection mechanism 1 includes a wall plate 11, a steel bar body 12 is arranged on the inner wall of the wall plate 11, a potential sensor 13 is arranged on the outer side of the steel bar body 12, the outer side of the steel bar body 12 is fixedly connected to the bottom end of the potential sensor 13, a second guide rod 15 is arranged on one side of the potential sensor 13, one side of the potential sensor 13 is fixedly connected to one end of the second guide rod 15, a ultrasonic sensor 16 is arranged at the other end of the second guide rod 15, the other end of the second guide rod 15 is fixedly connected to the top side of the ultrasonic sensor 16, and the bottom side of the ultrasonic sensor 16 is fixedly connected to the top side of the steel bar body 12. The top end of the movable arm 32 is rotatably connected to the bottom side of the light energy plate 21, the bottom side of the fixed plate 31 is fixedly connected to one side of the wall plate 11. One side of the top end of the potential sensor 13 is provided with a first guide rod 14, the top end of the potential sensor 13 is fixedly connected to one end of the first guide rod 14. One side of the middle end of the first guide rod 14 is provided with a transmission body 17, one side of the middle end of the first guide rod 14 is fixedly connected to one end of the transmission body 17. A plug board 19 is arranged at the protruding part of one end of the transmission body 17, and the protruding part of one end of the transmission body 17 is clamped with the inner wall of the plug board 19. One end of the plug board 19 is fixedly connected to one side of the device body 110, and one side of the device body 110 is in contact with one side of the wall. The potential sensor 13 and the ultrasonic sensor 16 are connected to the light energy plate 21 through wires. The auxiliary mechanism 2 includes a light energy plate 21, a side rod 22 is arranged at one end of the light energy plate 21, one end of the light energy plate 21 is rotatably connected to one side of the side rod 22. One end of the bottom side of the side rod 22 is provided with an inner frame 18, and one end of the bottom side of the side rod 22 is fixedly connected to the inner wall of the inner frame 18. One end of the side rod 22 is provided with a connecting rod 23, and one end of the side rod 22 is fixedly connected to one end of the connecting rod 23. A sliding rod 24 is arranged in the inner wall of the connecting rod 23, and the outer side of the sliding rod 24 is slidably penetrated through the inner wall of the connecting rod 23. One end of the sliding rod 24 is provided with an L-shaped rod 25, and one end of the sliding rod 24 is slidably clamped with the inner wall of the L-shaped rod 25. One end of the L-shaped rod 25 is provided with the device body 110, and one end of the L-shaped rod 25 is fixedly connected to one side of the device body 110 In this embodiment, when the old building steel bar corrosion detection equipment is in use, the corrosion change of the steel bar is dynamic. In order to be able to monitor the corrosion state of the steel bar body 12 in real time, the steel bar body 12 is connected inside the wall panel 11, and a potential sensor 13 and an ultrasonic sensor 16 are installed outside the steel bar body 12. The ultrasonic sensor 16 and the potential sensor 13 are connected by a second guide rod 15. Then, the collected data is uniformly received by the first guide rod 14. Finally, the data is transmitted to the detection equipment body 110 by the transmission body 17. The potential sensor 13 can measure the potential difference between the steel bar and the surrounding environment, and keenly detect the damage of the passivation film on the steel bar surface, so as to quickly judge the starting and development trend of corrosion. The ultrasonic sensor 16 uses the attenuation, reflection and other characteristic changes generated by corrosion when ultrasonic waves propagate inside the steel bar to accurately measure the degree and range of steel bar corrosion. The two complement each other; When the detection equipment body 110 receives data, it is necessary to connect the plug board 19 on the detection equipment body 110 to the convex part on the transmission body 17. Furthermore, the data can be effectively transmitted. In this way, after the data is viewed, the detection equipment body 110 can be disconnected from the transmission body 17, which is convenient for storing the detection equipment body 110 and does not need to be hung on the wall panel 11 for a long time; Secondly, the sensor needs to rely on a power source during the monitoring process. Therefore, a light energy panel 21 is connected to one side of the wall panel 11 and is connected to the two sensors through the light energy panel 21, so that the sensor can continue to work during the monitoring process, ensuring that the sensor is always in a normal operating state. This avoids the monitoring interruption caused by the exhaustion of the traditional power source, power failure and other situations, guarantees the continuous tracking of the steel bar corrosion state, and provides a reliable support for the integrity of the old building steel bar corrosion data; In addition, when the detection equipment body 110 contacts the wall panel 11, since a connecting rod 23 is designed at one end of the side rod, and a sliding rod 24 is equipped in the connecting rod 23, by pushing the sliding rod 24, it enters the inner wall of the L-shaped rod 25. Since the L-shaped rod 25 and the detection equipment body 110 are integrated, after contacting the wall panel 11, using this method can ensure that the detection equipment body 110 can effectively contact the wall panel 11, so that the user no longer needs to support the detection equipment body 110 by hand.

[0027] Embodiment 2: As Figures 1 - 6As shown in the figure, the adjusting mechanism 3 includes a fixed plate 31. An active arm 32 is arranged inside the fixed plate 31. The inner side of the fixed plate 31 is rotatably connected to the bottom end of the active arm 32. The top end of the active arm 32 is provided with a middle rod 33. The top end of the active arm 32 is rotatably connected to the bottom side of the middle rod 33. One end of the middle rod 33 is provided with an active disc 34. One end of the middle rod 33 is rotatably connected to one end of the active disc 34. One side of the active disc 34 is provided with a sub-rod 35. One side of the active disc 34 is fixedly connected to one end of the sub-rod 35. The inner wall of the sub-rod 35 is provided with a mother rod 36. The outer side of the mother rod 36 penetrates and slides inside the inner wall of the sub-rod 35. The outer side of one end of the mother rod 36 is slidably clamped with the inner wall of one side of the active arm 32. One end of the active disc 34 is provided with a turning handle 37. One end of the active disc 34 is fixedly connected to one end of the turning handle 37. The top end of the active arm 32 is rotatably connected to the bottom side of the light energy plate 21. The bottom side of the fixed plate 31 is fixedly connected to one side of the wall panel 11.

[0028] In this embodiment, in order to be able to adjust the angle of the light energy plate 21, therefore, an active arm 32 is designed on one side of it. By adjusting the arm span of the active arm 32, the angle of the light energy plate 21 changes. Whether it is the sunlight slanting in the early morning, the strong direct sunlight at noon, or the afterglow with a lower angle in the evening, the tester can adjust the active arm 32 to make the light energy plate 21 always maintain the best light-receiving angle that is almost perpendicular to the light. After the active arm 32 completes the angle adjustment, by rotating the active disc 34 by 90 degrees, the sub-rod 35 changes from a horizontal form to a vertical form. Furthermore, since a mother rod 36 is designed inside the sub-rod 35, by pushing the mother rod 36, it enters the active arm 32, so that the adjusted angle of the active arm 32 remains unchanged, ensuring that the light energy plate 21 always maintains the best light-receiving angle and continuously providing stable and sufficient power supply for the sensor.

[0029] Finally, a groove is opened on the fixed plate 31. When the light energy plate 21 is in a flat plane, the turning handle 37 can be snapped into the groove to form a stable connection structure. This design plays a key role in the face of a complex outdoor environment, especially wind interference. Old buildings are usually located in open spaces and are easily affected by winds of different intensities, which will not only affect their own stability but may also cause the connection components to loosen, thus affecting the normal operation of the entire detection device.

[0030] As Figures 1 - 8As shown in the figure, a steel bar body 12 is connected inside the wall panel 11. An electric potential sensor 13 and an ultrasonic sensor 16 are installed outside the steel bar body 12. The ultrasonic sensor 16 and the electric potential sensor 13 are connected by a second guide rod 15. Then, the collected data is uniformly received by a first guide rod 14. Finally, a transmission body 17 transmits the data to a detection device body 110. When the detection device body 110 receives the data, the plug board 19 on the detection device body 110 needs to be connected to the protruding part on the transmission body 17. Furthermore, the data can be effectively transmitted. In this way, after the data is viewed, the detection device body 110 can be disconnected from the transmission body 17, which is convenient for storing the detection device body 110. The sensors need to rely on power during the monitoring process. Therefore, a light energy panel 21 is connected to one side of the wall panel 11. By connecting the light energy panel 21 to the two sensors, the sensors can continuously work during the monitoring process, ensuring that the sensors are always in a normal operating state. When the detection device body 110 contacts the wall panel 11, since a connecting rod 23 is designed at one end of the side rod, and a sliding rod 24 is arranged in the connecting rod 23. By pushing the sliding rod 24, it enters the inner wall of the L-shaped rod 25. Since the L-shaped rod 25 and the detection device body 110 are integrated, after contacting the wall panel 11, this method can ensure that the detection device body 110 can effectively contact the wall panel 11; By adjusting the arm span of the movable arm 32, the angle of the light energy panel 21 changes. Whether it is the sunlight obliquely shining in the early morning, the strong light directly shining at noon, or the afterglow with a lower angle in the evening, the tester can adjust the movable arm 32 to make the light energy panel 21 always maintain the best light-receiving angle that is almost perpendicular to the light. Subsequently, the movable disk 34 is rotated by 90 degrees to change the sub-rod 35 from a horizontal form to a vertical form. Furthermore, since a mother rod 36 is designed inside the sub-rod 35, by pushing the mother rod 36, it enters the movable arm 32, so that the adjusted angle of the movable arm 32 remains unchanged.

[0031] The above is only a preferred embodiment of the present invention, and it is not a limitation to the present invention in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical content of the technical solution of the present invention, any simple modification, equivalent change, and modification made to the above embodiments according to the technical essence of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. An old building steel bar corrosion detection device, characterized in that, Comprising: A detection mechanism (1), an auxiliary mechanism (2) is arranged on the inner wall of the detection mechanism (1), an adjustment mechanism (3) is arranged on one side of the auxiliary mechanism (2), a detection mechanism (1) is arranged on one side of the adjustment mechanism (3), the detection mechanism (1) includes a wall panel (11), a steel bar body (12) is arranged on the inner wall of the wall panel (11), a potential sensor (13) is arranged on the outer side of the steel bar body (12), the outer side of the steel bar body (12) is fixedly connected to the bottom end of the potential sensor (13), a second guide rod (15) is arranged on one side of the potential sensor (13), one side of the potential sensor (13) is fixedly connected to one end of the second guide rod (15), a ultrasonic sensor (16) is arranged at the other end of the second guide rod (15), the other end of the second guide rod (15) is fixedly connected to the top side of the ultrasonic sensor (16), and the bottom side of the ultrasonic sensor (16) is fixedly connected to the top side of the steel bar body (12).

2. The rust detection device for steel bars in old buildings according to claim 1, characterized in that: The auxiliary mechanism (2) includes a light energy panel (21), a side rod (22) is arranged at one end of the light energy panel (21), one end of the light energy panel (21) is rotatably connected to one side of the side rod (22), an inner frame (18) is arranged at one end of the bottom side of the side rod (22), and one end of the bottom side of the side rod (22) is fixedly connected to the inner wall of the inner frame (18).

3. The rust detection device for steel bars in old buildings according to claim 2, characterized in that: A connecting rod (23) is arranged at one end of the side rod (22), one end of the side rod (22) is fixedly connected to one end of the connecting rod (23), a sliding rod (24) is arranged on the inner wall of the connecting rod (23), and the inner wall of the connecting rod (23) is slidably penetrated and connected with the outer side of the sliding rod (24).

4. An old building steel bar corrosion detection device according to claim 3, characterized in that: An L-shaped rod (25) is arranged at one end of the sliding rod (24), one end of the sliding rod (24) is slidably clamped to the inner wall of the L-shaped rod (25), a device body (110) is arranged at one end of the L-shaped rod (25), and one end of the L-shaped rod (25) is fixedly connected to one side of the device body (110).

5. An old building steel bar corrosion detection device according to claim 1, characterized in that: The adjustment mechanism (3) includes a fixing plate (31), a movable arm (32) is arranged inside the fixing plate (31), the inner side of the fixing plate (31) is rotatably connected to the bottom end of the movable arm (32), a middle rod (33) is arranged at the top end of the movable arm (32), the top end of the movable arm (32) is rotatably connected to the bottom side of the middle rod (33), a movable disc (34) is arranged at one end of the middle rod (33), and one end of the middle rod (33) is rotatably connected to one end of the movable disc (34).

6. The rust detection device for steel bars in old buildings according to claim 5, characterized in that: A sub-rod (35) is arranged on one side of the movable disc (34), one side of the movable disc (34) is fixedly connected to one end of the sub-rod (35), a mother rod (36) is arranged on the inner wall of the sub-rod (35), the inner wall of the sub-rod (35) is slidably penetrated and connected with the outer side of the mother rod (36), the outer side of one end of the mother rod (36) is slidably clamped to the inner wall of one side of the movable arm (32), a turning handle (37) is arranged at one end of the movable disc (34), and one end of the movable disc (34) is fixedly connected to one end of the turning handle (37).

7. An old building steel bar corrosion detection device according to claim 6, characterized in that: The top end of the movable arm (32) is rotatably connected to the bottom side of the light energy panel (21), and the bottom side of the fixed plate (31) is fixedly connected to one side of the wall panel (11).

8. An old building steel bar corrosion detection device according to claim 1, characterized in that: One side of the top end of the potential sensor (13) is provided with a first guide rod (14). The top end of the potential sensor (13) is fixedly connected to one end of the first guide rod (14). One side of the middle end of the first guide rod (14) is provided with a transmission body (17). One side of the middle end of the first guide rod (14) is fixedly connected to one end of the transmission body (17).

9. An old building steel bar corrosion detection device according to claim 8, characterized in that: A plug board (19) is provided at the protruding part of one end of the transmission body (17). The protruding part of one end of the transmission body (17) is clamped with the inner wall of the plug board (19). One end of the plug board (19) is fixedly connected to one side of the equipment body (110).

10. An old building steel bar corrosion detection device according to claim 9, characterized in that: One side of the equipment body (110) is in contact with one side of the wall. The potential sensor (13) and the ultrasonic sensor (16) are connected to the light energy panel (21) through wires.