Probe device for detecting corrosion of steel bars in concrete

Abstract

The utility model discloses a probe device for detecting the corrosion of a steel bar in concrete, which comprises a detection head for detecting the corrosion degree of the steel bar in the concrete, the detection head is slidably mounted and connected in a connecting piece, the connecting piece is provided with a propelling mechanism for clamping and sliding the detection head, and the propelling mechanism is connected with the detection head. The connecting piece is rotatably connected to the top end of the telescopic piece in a damping mode through the swing arm, the detection angle of the detection head can be adjusted by rotating the swing arm, the detection height of the detection head can be adjusted through the telescopic piece, and the bottom end of the telescopic piece is fixedly connected to the right-angle fixed supporting seat. The pushing mechanism comprises a pushing body which can be inserted into the connecting piece in a sliding mode, an elastic clamp for clamping the detection head is formed at one end of the pushing body, the pushing mechanism further comprises an adjusting and pushing driver capable of driving the pushing body to slide, the extending length of the detection head relative to the connecting piece can be adjusted by controlling the adjusting and pushing driver, and automatic attaching detection of the detection head is achieved. The labor cost is saved, and the detection efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of internal steel reinforcement detection tools, specifically a probe device for detecting corrosion of internal steel reinforcement in concrete. Background Technology

[0002] In the field of construction engineering, the durability and safety of reinforced concrete structures are of paramount importance, and steel corrosion is one of the key factors affecting its performance. Concrete itself is alkaline, and under normal conditions, a passivation layer forms on the surface of the steel bars, protecting them from corrosion. However, once the concrete carbonizes or cracks, moisture, oxygen, and other substances in the air come into contact with the steel bars, causing an electrochemical reaction that leads to steel corrosion. This severely reduces the effective cross-sectional area and load-bearing capacity of the steel bars, affecting the durability and safety of the structure.

[0003] The detection of the degree of corrosion of steel bars in concrete typically uses a steel bar corrosion detector. Commonly used steel bar corrosion detectors employ the natural potential method to assess the corrosion characteristics of steel bars in concrete structures and components. However, existing steel bar corrosion detectors usually require manual placement of the probe close to the area to be tested on the concrete. Concrete structures are often large in area and height, making manual movement and placement of the probe dangerous and inconvenient. This severely limits the use of existing steel bar corrosion detectors. Furthermore, manually holding the probe and placing it against the concrete is extremely inconvenient. Additionally, the probe and main unit of existing steel bar corrosion detectors are often separate components, requiring workers to hold the main unit in one hand to observe measurement data while simultaneously operating the probe, significantly impacting efficiency.

[0004] Therefore, there is a need to provide a probe device for detecting steel corrosion inside concrete. Utility Model Content

[0005] The purpose of this invention is to provide a probe device for detecting steel corrosion in concrete, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A probe device for detecting steel reinforcement corrosion in concrete includes a probe head for detecting the degree of corrosion of the internal steel reinforcement. The probe head is slidably mounted in a connector. The connector has a pushing mechanism for clamping and sliding the probe head. The connector is rotatably connected to the top of a telescopic member via a damped swing arm. Rotating the swing arm adjusts the detection angle of the probe head, and the telescopic member adjusts the detection height of the probe head. The bottom end of the telescopic member is fixedly connected to a right-angle fixed support. The pushing mechanism includes a pusher body slidably inserted into the connector, an elastic clamp formed at one end of the pusher body to hold the probe head, and a push-adjusting actuator for driving the pusher body to slide. Controlling the push-adjusting actuator adjusts the extension length of the probe head relative to the connector.

[0008] Preferably, a rack is formed at the bottom of the pusher, and the pusher driver is a servo motor. The main shaft of the servo motor is connected to the rack through corresponding gear meshing. Controlling the forward or reverse rotation of the servo motor can adjust the extension length of the probe relative to the connector.

[0009] Preferably, the connector includes a connecting rod that is damped and rotatably connected to the top of the telescopic member via a swing arm, with each end of the connecting rod forming a sleeve, the sleeve being used to slidably mount and connect the probe head.

[0010] Preferably, the telescopic component includes a second support rod whose bottom end is fixedly connected to a right-angle fixed support base, a first support rod telescopically connected to the second support rod, and a stabilizing block disposed on the top of the first support rod, the stabilizing block being used to limit and lock the swing arm.

[0011] Preferably, the stabilizing block is a cuboid block, and magnets are embedded in the inner side and bottom surface of the cuboid block. The corresponding parts of the swing arm are provided with structures that attract the magnets, and the magnets attract the structures to lock the swing arm.

[0012] Preferably, the second support rod has a damped rotatable height adjuster, which is integrally formed into an adjusting gear. The first support rod forms a corresponding actuating rack, and the adjusting gear and the actuating rack are meshed and connected for transmission.

[0013] Preferably, the right-angle fixed support includes a horizontal plate fixedly connected to the second support rod and a vertical plate rotatably connected to the side of the second support rod. The bottom of the vertical plate is connected to the top surface of the horizontal plate through a pressure rod, and pressure is applied to the horizontal plate and the vertical plate through the pressure rod. The bottom surface of the horizontal plate is provided with a plurality of first friction bodies, and the outer surface of the vertical plate is provided with a plurality of second friction bodies.

[0014] Preferably, the pressure rod is a hydraulic rod, which applies pressure to the horizontal and vertical plates by controlling the extension of the hydraulic rod.

[0015] Preferably, the first friction body is an elastic friction strip with a trapezoidal cross-section, and the second friction body is an elastic friction strip with a triangular cross-section.

[0016] Preferably, the second support rod is provided with an inclined placement frame on its side, the inclined placement frame being used to place the main unit, and the main unit being connected to the probe head via a connecting line.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. The probe of this utility model is slidably installed and connected to the connector. The connector is connected to the telescopic component by a damped rotation via a swing arm. The probe height of the probe is adjusted by the telescopic component to improve the range of application. At the same time, the extension length of the probe relative to the connector can be adjusted by the drive propulsion mechanism, so that the probe can be automatically fitted to the concrete part by controlling the probe to work in conjunction with the telescopic component. No manual operation is required, saving costs and improving detection efficiency.

[0019] 2. The telescopic component of this utility model includes a first support rod and a second support rod that are telescopically connected, as well as a stabilizing block set on the top of the first support rod. The stabilizing block limits and locks the swing arm, so that the probe can rotate to two positions, horizontal and vertical, and can detect horizontal or vertical concrete surfaces, with strong adaptability.

[0020] 3. The bottom of the telescopic component of this utility model is fixed to the horizontal plate. The horizontal plate is rotatably connected to the vertical plate and then connected to the horizontal plate and the vertical plate by a pressure rod. The outer sides of the horizontal plate and the vertical plate are respectively provided with a first friction body and a second friction body. At the bottom of the right-angled concrete building, the pressure rod applies pressure to the horizontal plate and the vertical plate, and the horizontal plate and the vertical plate will respectively adhere to the bottom surface and the vertical surface of the concrete. Locking is achieved under the friction of the first friction body and the second friction body, stabilizing the movement of the probe and improving the measurement stability and accuracy. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention from a first-person perspective;

[0022] Figure 2 for Figure 1 A magnified view of part A in the image;

[0023] Figure 3 for Figure 1 A magnified view of part B in the image;

[0024] Figure 4 This is a three-dimensional structural diagram of the present invention from a second perspective;

[0025] Figure 5This is the right view of the present invention;

[0026] Figure 6 for Figure 5 A magnified view of part C;

[0027] Figure 7 for Figure 5 A magnified view of part of D.

[0028] In the diagram: 1-Probe head; 2-Connector; 21-Connecting rod; 22-Set piece; 3-Swing arm; 4-Telescopic component; 41-First support rod; 411-Actuating spur rack; 42-Second support rod; 421-Matching groove; 43-Stabilizing block; 44-Height adjuster; 441-Adjusting gear; 5-Propulsion mechanism; 51-Push body; 52-Elastic clamp; 53-Push driver; 6-Right-angle fixed support; 61-Horizontal plate; 611-First friction body; 62-Vertical plate; 621-Second friction body; 63-Pressure rod; 64-First connecting seat; 65-First rotating rod; 66-Second connecting seat; 67-Second rotating rod; 7-Inclined placement frame; 8-Main unit. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] The measurement principle of the internal steel reinforcement corrosion detection probe is mainly based on the half-cell potential method in electrochemical detection. This method utilizes the potential change caused by the electrochemical reaction of steel reinforcement corrosion in concrete to determine the corrosion state of the steel reinforcement. Specifically, the detection probe consists of a half-cell of "copper + copper sulfate saturated solution" and a half-cell of "steel reinforcement + concrete", forming a full-cell system. Since the potential value of the "copper + copper sulfate saturated solution" is relatively constant, while the electrochemical reaction caused by steel reinforcement corrosion in concrete will cause a change in the potential of the full-cell system, the corrosion state of the steel reinforcement in the concrete can be assessed by measuring the potential difference between the steel reinforcement surface and the reference electrode.

[0031] like Figure 1 , Figure 4 and Figure 5As shown, this utility model is a probe device for detecting internal steel reinforcement corrosion in concrete. It includes a probe head 1 for detecting the degree of internal steel reinforcement corrosion. This probe typically uses a copper sulfate electrode probe, but other types of probes can also be used, as long as they can detect the degree of internal steel reinforcement corrosion. Furthermore, the probe head 1 is slidably connected to a connector 2. The connector 2 is equipped with a pushing mechanism 5 for clamping and sliding the probe head 1. Simultaneously, the connector 2 is rotatably connected to the top of a telescopic member 4 via a damped swing arm 3. This damped rotatable connection allows the swing arm 3 to rotate to any position, thus adjusting the detection angle of the probe head 1 by rotating the swing arm 3. Adjusting the detection angle only changes the orientation of the probe head 1. In reality, most concrete structures are either vertical or horizontal; therefore, the detection angle is usually only at zero degrees (for vertical detection, such as...). Figure 1 (as shown in the image) and a 90-degree position (detecting the horizontal plane, such as detecting the inner top surface of a building).

[0032] To increase the detection height of the probe head 1, the detection height of the probe head 1 can be adjusted by the telescopic component 4. Furthermore, the bottom end of the telescopic component 4 is fixedly connected to the right-angle fixed support 6, which is used to stand the entire probe device on the ground and stabilize the entire probe device.

[0033] The propulsion mechanism 5 is used to adjust the extension length of the probe head 1 relative to the connector 2, so as to, specifically, as needed. Figure 1 and Figure 2 As shown, the propulsion mechanism 5 includes a pusher 51 that can be slidably inserted into the connector 2, an elastic clamp 52 formed at one end of the pusher 51 to hold the probe head 1, and an adjustment drive 53 that can drive the pusher 51 to slide. More specifically, a rack is formed at the bottom of the pusher 51, and the adjustment drive 53 is a servo motor. The main shaft of the servo motor is connected to the rack through corresponding gear meshing. By starting and controlling the rotation direction (forward or reverse) of the servo motor, the extension length of the probe head 1 relative to the connector 2 can be adjusted so that the probe head 1 can be pushed out and fitted to the part of the concrete structure that needs to be detected as needed.

[0034] There are generally two detection methods: potential testing and gradient testing. Specifically: First, when using potential testing, a section of concrete needs to be chiseled open to expose the reinforcing steel, and the rust layer on the steel needs to be removed. The metal electrode connected to the black signal wire is clamped onto the reinforcing steel. The other probe is the probe head 1 of this invention, which is attached to the area to be tested in the concrete. Second, when using gradient testing, it is not necessary to chisel the concrete. Two potential electrodes are connected using connector 2, with a required point spacing of 20cm. Therefore, to adapt to the second detection method, such as... Figure 1 and Figure 4 As shown, the connector 2 includes a connecting rod 21 that is rotatably connected to the top of the telescopic member 4 via a swing arm 3 with damping. Both ends of the connecting rod 21 form a sleeve 22, which is used to slidably install and connect the probe head 1. According to actual requirements, the axial distance between the two sleeves 22 is required to be 20cm.

[0035] Further optimized, the telescopic component 4 includes a second support rod 42 fixedly connected to the right-angle fixed support base 6 at its bottom end, a first support rod 41 telescopically connected to the second support rod 42, and a stabilizing block 43 disposed on the top of the first support rod 41. Specifically, the second support rod 42 forms mating grooves (421) on both sides, and the bottom of the first support rod 41 forms a pin corresponding to the mating groove (421), which is slidably connected to the groove (421) through the pin; furthermore, the top of the first support rod 41 forms a U-shaped opening for rotatably connecting the swing arm 3. The U-shaped opening forms a stabilizing block 43 on its side. The stabilizing block 43 is used to limit and lock the swing arm 3. Specifically, the stabilizing block 43 is a cuboid block. Magnets are embedded in the inner side and bottom surface of the cuboid block. The corresponding parts of the swing arm 3 are provided with structures that attract the magnets. The magnets on the inner side and bottom surface enable the inner side to attract the corresponding structure and lock the swing arm 3 when the detection angle is at the aforementioned zero-degree position. Similarly, when the detection angle is at the aforementioned ninety-degree position, the magnet on the bottom surface attracts the corresponding structure and locks the swing arm 3.

[0036] A further optimization of this utility model, to facilitate the driving and adjustment of the height of the telescopic component 4, specifically, is as follows: Figure 3 As shown, the second support rod 42 has a damped height adjuster 44 that is rotatably mounted. The height adjuster 44 is integrally formed with an adjusting gear 441. The first support rod 41 forms a corresponding actuating rack 411. The adjusting gear 441 and the actuating rack 411 are meshed and connected for transmission. By rotating the height adjuster 44, the first support rod 41 can be raised or lowered. Furthermore, the damped arrangement of the height adjuster 44 and the second support rod 42 allows the first support rod 41 to be stopped at any position by damped friction, maintaining the adjusted height.

[0037] In practice, concrete structures are usually perpendicular to the horizontal base. Therefore, the side of a typical concrete structure is at a right angle to the horizontal base. Thus, further optimization of the right-angle fixed support 6 is needed, specifically, as follows: Figure 1 , Figure 4 , Figure 5 , Figure 6 and Figure 7As shown, the right-angle fixed support 6 includes a horizontal plate 61 fixedly connected to the second support rod 42 and a vertical plate 62 rotatably connected to the side of the second support rod 42. The bottom of the vertical plate 62 is connected to the top surface of the horizontal plate 61 via a pressure rod 63. Specifically, the pressure rod 63 is preferably a hydraulic rod. The top surface of the horizontal plate 61 forms a first connecting seat 64. The first connecting seat 64 is hinged to one end of the hydraulic rod via a first rotating rod 65. The other end of the hydraulic rod is hinged to a second connecting seat 66 fixed to the bottom of the inner side of the vertical plate 62 via a second rotating rod 67. Pressure is applied to the horizontal plate 61 and the vertical plate 62 by the pressure rod 63. The horizontal plate 61 is used to support the entire probe device to the horizontal bottom surface. The vertical plate 62 is attached to the side of the concrete structure that is perpendicular to the horizontal bottom surface.

[0038] Furthermore, to lock the right-angle fixed support 6 at the right angle, the bottom surface of the horizontal plate 61 is provided with a plurality of first friction bodies 611, and the outer surface of the vertical plate 62 is provided with a plurality of second friction bodies 621. More specifically, the first friction bodies 611 are elastic friction strips with a trapezoidal cross-section, and the second friction bodies 621 are elastic friction strips with a triangular cross-section. The elastic friction strips are made of the same material as existing car tires, namely natural rubber, which is a material with a certain degree of elasticity and high friction. By extending the pressure rod 63 to apply pressure to the horizontal plate 61 and the vertical plate 62, the elastic friction strips are compressed, causing the right-angle fixed support 6 to be pressed at the right angle. After the elastic friction strips are compressed, the friction will increase, causing the right-angle fixed support 6 to be locked by friction and unable to move, which has a certain fixing effect, making the detection of the probe 1 more stable and more accurate.

[0039] Furthermore, the second support rod 42 is provided with an inclined placement frame 7 on its side. The inclined placement frame 7 is used to place the main unit 8. The side of the inclined placement frame 7 where the main unit 8 is placed has a certain inclination, which makes it easier to observe during manual operation. The main unit 8 is connected to the probe 1 through a connecting cable. The data detected by the probe 1 will be transmitted back to the main unit 8 to realize functions such as analysis or visualization. The use of the inclined placement frame 7 eliminates the need for workers to hold the main unit in one hand to observe and measure data while operating the probe with the other hand, thus improving work efficiency.

[0040] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A probe device for detecting corrosion of reinforcing steel bars inside concrete, comprising a probe head (1) for detecting the degree of corrosion of the reinforcing steel bars, characterized in that: The probe (1) is slidably mounted in the connector (2). The connector (2) is provided with a push mechanism (5) for clamping and sliding the probe (1). The connector (2) is rotatably connected to the top of the telescopic member (4) via a swing arm (3). Rotating the swing arm (3) can adjust the detection angle of the probe (1). The telescopic member (4) can adjust the detection height of the probe (1). The bottom end of the telescopic member (4) is fixedly connected to a right-angle fixed support (6). The push mechanism (5) includes a push body (51) slidably inserted into the connector (2), an elastic clamp (52) formed at one end of the push body (51) to clamp the probe (1), and a push driver (53) that can drive the push body (51) to slide. Controlling the push driver (53) can adjust the extension length of the probe (1) relative to the connector (2).

2. The probe device for detecting steel corrosion in concrete according to claim 1, characterized in that: The bottom of the pusher (51) is formed with a rack, and the pusher driver (53) is a servo motor. The main shaft of the servo motor is connected to the rack through the meshing of corresponding gears. Controlling the forward or reverse rotation of the servo motor can adjust the extension length of the probe (1) relative to the connector (2).

3. The probe device for detecting steel corrosion in concrete according to claim 2, characterized in that: The connector (2) includes a connecting rod (21) that is damped and rotatably connected to the top of the telescopic member (4) via a swing arm (3). Both ends of the connecting rod (21) form fittings (22), which are used to slidably mount the probe (1).

4. A probe device for detecting steel reinforcement corrosion in concrete according to claim 2 or 3, characterized in that: The telescopic component (4) includes a second support rod (42) fixedly connected to the bottom end of a right-angle fixed support base (6), a first support rod (41) telescopically connected to the second support rod (42), and a stabilizing block (43) disposed on the top of the first support rod (41). The stabilizing block (43) is used to limit and lock the swing arm (3).

5. The probe device for detecting steel corrosion in concrete according to claim 4, characterized in that: The stabilizing block (43) is a cuboid block, and magnets are embedded in the inner side and bottom surface of the cuboid block respectively. The corresponding parts of the swing arm (3) are provided with structures that attract the magnets respectively. The magnets attract the structures and lock the swing arm (3).

6. The probe device for detecting steel corrosion in concrete according to claim 5, characterized in that: The second support rod (42) has a damped rotating height adjuster (44), which is integrally formed with an adjusting gear (441). The first support rod (41) forms a corresponding actuating rack (411), and the adjusting gear (441) and the actuating rack (411) are meshed and connected for transmission.

7. A probe device for detecting steel reinforcement corrosion in concrete according to claim 5 or 6, characterized in that: The right-angle fixed support base (6) includes a horizontal plate (61) fixedly connected to the second support rod (42) and a vertical plate (62) rotatably connected to the side of the second support rod (42). The bottom of the vertical plate (62) is connected to the top surface of the horizontal plate (61) through a pressure rod (63). Pressure is applied to the horizontal plate (61) and the vertical plate (62) through the pressure rod (63). The bottom surface of the horizontal plate (61) is provided with a plurality of first friction bodies (611), and the outer surface of the vertical plate (62) is provided with a plurality of second friction bodies (621).

8. A probe device for detecting steel corrosion in concrete according to claim 7, characterized in that: The pressure rod (63) is a hydraulic rod, which applies pressure to the horizontal plate (61) and the vertical plate (62) by controlling the extension of the hydraulic rod.

9. A probe device for detecting steel reinforcement corrosion in concrete according to claim 7, characterized in that: The first friction body (611) is an elastic friction strip with a trapezoidal cross-section, and the second friction body (621) is an elastic friction strip with a triangular cross-section.

10. A probe device for detecting steel reinforcement corrosion in concrete according to claim 5, 6, 8, or 9, characterized in that: The second support rod (42) is provided with an inclined placement frame (7) on its side. The inclined placement frame (7) is used to place the main unit (8). The main unit (8) is connected to the probe head (1) through a connecting line.

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