Self-propelled multi-point synchronous detection device for reinforced concrete half-cell potential

Abstract

The present invention proposes a self-propelled, multi-point, synchronous detection device for the half-cell potential of reinforced concrete. The device comprises a support frame, two detection rollers, a transmission mechanism, an electric motor, multiple propeller mechanisms, and a control unit. The output of the potential detection unit is electrically connected to the control unit, the control unit of the electric motor is electrically connected to the control unit, and the control unit of the propeller mechanism is electrically connected to the control unit. A battery is disposed within the inner cavity of the support frame to power the potential detection unit, the electric motor, the propeller mechanism, and the control unit. The beneficial technical effect of the present invention is that it proposes a self-propelled, multi-point, synchronous detection device for the half-cell potential of reinforced concrete. This solution can significantly improve detection efficiency and coverage, and is particularly suitable for detecting the bottom surfaces of tall structures.

Description

Technical Field

[0001] The present invention relates to a nondestructive detection technology for reinforced concrete, in particular to a self-propelled multi-point synchronous detection device for reinforced concrete half-cell potential. Background Art

[0002] Reinforced concrete is one of the most widely used structural forms in the engineering field. It fully utilizes the compressive strength of concrete and the tensile strength of steel bars. At the same time, due to the good bonding between concrete and steel bars, the concrete wrapped on the outside can also protect the steel bars from rust, allowing the two materials to be effectively combined together.

[0003] Rebar corrosion is a major factor affecting the mechanical properties and durability of reinforced concrete. To ensure structural safety, the degree of corrosion within the concrete needs to be periodically tested. A commonly used detection method in the prior art is rebar potential detection. Existing rebar corrosion detectors based on the principle of potential detection include a detection host, which is connected to a cylindrical detection electrode filled with a saturated copper sulfate solution via a signal line. A detection end cap is provided at the end of the detection electrode away from the signal line. Before testing, the measurement point location is first determined, and then the detection electrode is fully abutted against the measurement point according to the measurement point location. The test results are displayed and stored in the detection host, and the same process is repeated to complete the detection of all measurement points.

[0004] The problem is that when implementing potential detection in the existing technology, multiple detection points are generally arranged on the structure. The coverage of the detection points is limited and the structure cannot be fully covered. In addition, for structures with higher heights (such as the bottom of a bridge beam), it is difficult to arrange detection points on their bottom surface, and the implementation efficiency is extremely low. Summary of the Invention

[0005] In response to the problems in the background technology, the present invention proposes a self-propelled multi-point synchronous detection device for reinforced concrete half-cell potential. The innovation of the present invention lies in that the self-propelled multi-point synchronous detection device includes a support frame, two detection rollers, a transmission mechanism, an electric motor, multiple propeller mechanisms and a control unit;

[0006] The support frame is a cubic hollow structure, with a rotating support provided on the upper end surface of the support frame, and a detection roller provided on the rotating support. The ends of the two detection rollers are flush and parallel in axis. The axis of the detection rollers is parallel to the upper end surface of the support frame. The two detection rollers are arranged at the same height, with a spacing between the two detection rollers. The plane formed by the upper vertices of the two detection rollers is recorded as the detection surface.

[0007] The transmission mechanism is arranged at a position on the upper end surface of the support frame corresponding to the end of the detection roller. The transmission mechanism is connected to the detection roller and can drive the two detection rollers to rotate synchronously in the same direction. A distance is left between the highest point of the transmission mechanism and the detection surface.

[0008] The motor is arranged on the upper end surface of the support frame at a position corresponding to the transmission mechanism, and the motor is in transmission connection with the power input portion of the transmission mechanism; a distance is left between the highest point of the motor and the detection surface;

[0009] The control unit is arranged in the inner cavity of the support frame;

[0010] The supporting portion of the propeller mechanism is connected to the circumferential side wall of the support frame, and multiple propeller mechanisms are distributed along the circumference of the support frame; a distance is left between the highest point of the propeller mechanism and the detection surface;

[0011] The detection roller is composed of a core shaft, an insulating cylinder, and a plurality of potential detection units; the insulating cylinder is sleeved outside the core shaft, a gap is left between the insulating cylinder and the core shaft, and the inner wall of the insulating cylinder and the outer wall of the core shaft are connected by a plurality of connecting columns; the potential detection units are arranged on the surface of the insulating cylinder, and the plurality of potential detection units are distributed in a matrix form, and adjacent potential detection units are insulated;

[0012] The output end of the potential detection unit is electrically connected to the control unit, the control part of the motor is electrically connected to the control unit, and the control part of the propeller mechanism is electrically connected to the control unit;

[0013] A battery is provided in the inner cavity of the support frame, and the battery supplies power to the potential detection unit, the motor, the propeller mechanism and the control unit.

[0014] When the above-mentioned detection device is used to detect the bottom surface of the beam, the bottom surface of the beam is first sprayed with water (in the specific implementation, a drone can be used to spray water), and then the propeller mechanism is started to make the detection device fly to the bottom of the beam, and then the detection device is raised until the detection roller contacts the bottom surface of the beam (in the subsequent process, the propeller mechanism continues to provide an upward force to make the detection roller close to the bottom surface of the beam), and then the detection roller is driven by the motor to rotate and roll on the bottom surface of the beam. During the rolling process, the control unit collects the output signal of the potential detection unit, such as the output signal from the potential detection unit on the two detection rollers. If there is no potential difference in the output signals, it means that the steel bars in the areas corresponding to the two detection rollers are in the same state. If there is a potential difference in the output signals from the potential detection units on the two detection rollers, it means that there is steel bar corrosion in one of the areas corresponding to the two detection rollers, and the corrosion situation can be further judged based on the potential data. After adopting the above scheme, the detection device can complete the potential detection of the bottom of the beam by rolling over the bottom of the beam. The detection efficiency is high and the coverage is good. After reasonably setting the flight trajectory, full coverage detection of the bottom of the beam can be achieved, which is especially suitable for potential detection of the bottom surface of a structure with a high height.

[0015] Preferably, the potential detection unit comprises a copper cover, a copper electrode, and an insulating shell; the inner end of the insulating shell is fixedly connected to the surface of the insulating cylinder; the copper electrode is disposed within the insulating shell, with the inner end of the copper electrode fixedly connected to the surface of the insulating cylinder; the copper cover is disposed at the outer end of the insulating shell; the copper electrode, the insulating shell, and the insulating cylinder form a closed cavity filled with a saturated copper sulfate solution. The number of potential detection units is large, and the number of electrical circuits is also large. In a specific implementation, the output end of the copper electrode can be led to the inner wall of the insulating cylinder, and a printed thin-film circuit is disposed on the inner wall of the insulating cylinder, through which the output end of the copper electrode is led to the outside.

[0016] The beneficial technical effect of the present invention is: a self-propelled multi-point synchronous detection device for reinforced concrete half-cell potential is proposed, which can greatly improve the detection efficiency and detection coverage, and is particularly suitable for detecting the bottom surface of a high-rise structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 , a schematic structural diagram of the present invention;

[0018] Figure 2 , a side view of the present invention;

[0019] Figure 3 , schematic diagram of the cross section of the detection roller;

[0020] Figure 4 , schematic diagram of potential detection unit;

[0021] Figure 5 , a schematic diagram of the working state of the present invention;

[0022] The names corresponding to the various marks in the figure are: support frame 1, detection roller 2, core shaft 21, insulating cylinder 22, potential detection unit 23, copper cover 231, copper electrode 232, insulating shell 233, transmission mechanism 3, motor 4, propeller mechanism 5, and bottom surface A of the structure. DETAILED DESCRIPTION

[0023] A self-propelled multi-point synchronous detection device for reinforced concrete half-cell potential, the innovation of which is that the self-propelled multi-point synchronous detection device comprises a support frame 1, two detection rollers 2, a transmission mechanism 3, a motor 4, multiple propeller mechanisms 5 and a control unit;

[0024] The support frame 1 is a cubic hollow structure. A rotating support is provided on the upper end surface of the support frame 1. The detection roller 2 is provided on the rotating support. The ends of the two detection rollers 2 are flush and parallel in axis. The axis of the detection roller 2 is parallel to the upper end surface of the support frame 1. The two detection rollers 2 are arranged at the same height. There is a gap between the two detection rollers 2. The plane formed by the upper vertices of the two detection rollers 2 is recorded as the detection surface.

[0025] The transmission mechanism 3 is arranged at a position on the upper end surface of the support frame 1 corresponding to the end of the detection roller 2. The transmission mechanism 3 is in transmission connection with the detection roller 2. The transmission mechanism 3 can drive the two detection rollers 2 to rotate synchronously in the same direction. A gap is left between the highest point of the transmission mechanism 3 and the detection surface.

[0026] The motor 4 is arranged on the upper end surface of the support frame 1 at a position corresponding to the transmission mechanism 3, and the motor 4 is in transmission connection with the power input portion of the transmission mechanism 3; a distance is left between the highest point of the motor 4 and the detection surface;

[0027] The control unit is arranged in the inner cavity of the support frame 1;

[0028] The supporting portion of the propeller mechanism 5 is connected to the circumferential side wall of the support frame 1, and multiple propeller mechanisms 5 are distributed along the circumference of the support frame 1; a distance is left between the highest point of the propeller mechanism 5 and the detection surface;

[0029] The detection roller 2 is composed of a core shaft 21, an insulating cylinder 22, and a plurality of potential detection units 23. The insulating cylinder 22 is sleeved outside the core shaft 21, with a gap between the insulating cylinder 22 and the core shaft 21. The inner wall of the insulating cylinder 22 and the outer wall of the core shaft 21 are connected by a plurality of connecting columns. The potential detection units 23 are arranged on the surface of the insulating cylinder 22. The plurality of potential detection units 23 are distributed in a matrix form, and adjacent potential detection units 23 are insulated.

[0030] The output end of the potential detection unit 23 is electrically connected to the control unit, the control unit of the motor 4 is electrically connected to the control unit, and the control unit of the propeller mechanism 5 is electrically connected to the control unit;

[0031] A battery is provided in the inner cavity of the support frame 1 , and the battery supplies power to the potential detection unit 23 , the motor 4 , the propeller mechanism 5 and the control unit.

[0032] Furthermore, the potential detection unit 23 is composed of a copper cover 231, a copper electrode 232 and an insulating shell 233; the inner end of the insulating shell 233 is fixedly connected to the surface of the insulating tube 22; the copper electrode 232 is arranged in the insulating shell 233, and the inner end of the copper electrode 232 is fixedly connected to the surface of the insulating tube 22; the copper cover 231 is arranged at the outer port of the insulating shell 233; the copper electrode 232, the insulating shell 233 and the insulating tube 22 form a closed cavity, and the cavity is filled with a saturated copper sulfate solution.

Claims

1. A self-propelled multi-point synchronous detection device for reinforced concrete half-cell potential, characterized by: The self-propelled multi-point synchronous detection device comprises a support frame (1), two detection rollers (2), a transmission mechanism (3), a motor (4), a plurality of propeller mechanisms (5) and a control unit; The support frame (1) is a hollow cubic structure. A rotating support is provided on the upper end surface of the support frame (1). The detection roller (2) is provided on the rotating support. The ends of the two detection rollers (2) are flush and axially parallel. The axial directions of the detection rollers (2) are parallel to the upper end surface of the support frame (1). The two detection rollers (2) are provided at the same height. A spacing is left between the two detection rollers (2). The plane formed by the upper vertices of the two detection rollers (2) is recorded as the detection surface. The transmission mechanism (3) is arranged at a position on the upper end surface of the support frame (1) corresponding to the end of the detection roller (2). The transmission mechanism (3) is connected to the detection roller (2) in a transmission manner. The transmission mechanism (3) can drive the two detection rollers (2) to rotate synchronously in the same direction. A distance is left between the highest point of the transmission mechanism (3) and the detection surface. The motor (4) is arranged on the upper end surface of the support frame (1) at a position corresponding to the transmission mechanism (3), and the motor (4) is in transmission connection with the power input portion of the transmission mechanism (3); a distance is left between the highest point of the motor (4) and the detection surface; The control unit is arranged in the inner cavity of the support frame (1); The support portion of the propeller mechanism (5) is connected to the circumferential side wall of the support frame (1), and a plurality of propeller mechanisms (5) are distributed along the circumference of the support frame (1); a distance is left between the highest point of the propeller mechanism (5) and the detection surface; The detection roller (2) is composed of a core shaft (21), an insulating cylinder (22) and a plurality of potential detection units (23); the insulating cylinder (22) is sleeved outside the core shaft (21), a gap is left between the insulating cylinder (22) and the core shaft (21), and the inner wall of the insulating cylinder (22) and the outer wall of the core shaft (21) are connected by a plurality of connecting columns; the potential detection units (23) are arranged on the surface of the insulating cylinder (22), the plurality of potential detection units (23) are distributed in a matrix form, and adjacent potential detection units (23) are insulated; The output end of the potential detection unit (23) is electrically connected to the control unit, the control unit of the motor (4) is electrically connected to the control unit, and the control unit of the propeller mechanism (5) is electrically connected to the control unit; A battery is provided in the inner cavity of the support frame (1), and the battery supplies power to the potential detection unit (23), the motor (4), the propeller mechanism (5) and the control unit.

2. The self-propelled multi-point synchronous detection device for reinforced concrete half-cell potential according to claim 1, characterized in that: The potential detection unit (23) is composed of a copper cover (231), a copper electrode (232) and an insulating shell (233); the inner end of the insulating shell (233) is fixedly connected to the surface of the insulating cylinder (22); the copper electrode (232) is arranged in the insulating shell (233), and the inner end of the copper electrode (232) is fixedly connected to the surface of the insulating cylinder (22); the copper cover (231) is arranged at the outer end of the insulating shell (233); the copper electrode (232), the insulating shell (233) and the insulating cylinder (22) form a closed cavity, and the cavity is filled with a saturated copper sulfate solution.

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