In-situ testing device for corrosion of steel bars in concrete

Abstract

The utility model relates to the technical field of reinforcing steel bar detection, in particular to an in-situ testing device for corrosion of reinforcing steel bars in concrete, which comprises a connecting box, a moving component, a corrosion detector, a reinforcing steel bar detector and a fixing block, the connecting box comprises a box body, one side of the box body is connected with a connector fixedly arranged on the side portion of the fixing block through an installed telescopic cylinder, a moving assembly is arranged at the bottom of the box body in a sliding mode and comprises a lifting cylinder and a moving cylinder which are vertically arranged, a steel bar detector is fixedly arranged at the telescopic end of the moving cylinder, and a spray head is installed above the steel bar detector. The spray head communicates with a pigment box installed in the box body, and a corrosion detector is rotationally arranged on the side, away from the connecting box, of the steel bar detector. The device can be fixed on a high pier or a beam, drives the corrosion detector to move and detect through the lifting cylinder and the moving cylinder, and is suitable for detection scenes where manual intervention is difficult.

Description

Technical Field

[0001] This utility model relates to the field of steel reinforcement detection technology, specifically to an in-situ testing device for steel reinforcement corrosion in concrete. Background Technology

[0002] Rebar corrosion detection is crucial for the safe maintenance of existing buildings and bridges, playing a vital role in ensuring structural safety, extending structural lifespan, and reducing maintenance costs. Existing rebar corrosion detection methods include destructive testing methods such as chloride ion detection, chipping, and sampling, as well as non-destructive testing methods such as half-cell potential method, resistivity method, and gradient method. When there is no obvious damage to the appearance of the inspection location, non-destructive testing methods generally require the location of the rebar to be inspected and marked. The condition of the rebar is then manually inspected by hand at the marked location. However, when inspecting hard-to-reach areas such as high piers and the bottom of beams, it is inconvenient to manually inspect the rebar. Utility Model Content

[0003] The main purpose of this invention is to provide an in-situ testing device for steel reinforcement corrosion in concrete, which can effectively solve the above-mentioned problems.

[0004] This utility model provides the following technical solution.

[0005] A device for in-situ testing of steel reinforcement corrosion in concrete includes a connecting box, a moving component, a corrosion detector, a steel reinforcement detector, and a fixing block. The connecting box includes a box body, one side of which is connected to a connector fixedly installed on the side of the fixing block via an installed telescopic cylinder. A moving component is slidably installed at the bottom of the box body. The moving component includes a vertically installed lifting cylinder and a moving cylinder. A steel reinforcement detector is fixedly installed at the telescopic end of the moving cylinder. A nozzle is installed above the steel reinforcement detector and communicates with a paint box installed inside the box. A corrosion detector is rotatably installed on the side of the steel reinforcement detector away from the connecting box.

[0006] Preferably, the moving component further includes a rotary gear set; a rotary gear set is rotatably disposed on the lower part of the mounting plate, the rotary gear set including a driving gear and a driven gear meshing together, both the driving gear and the driven gear being rotatably connected to the mounting plate, and a rust detector being detachably connected to the end of the driven gear.

[0007] Preferably, the bottom of the box is slidably connected to a movable component via a fixed base plate. A movable rack is fixedly installed on the base plate. A movable gear is rotatably installed at one end of the movable component. The movable gear meshes with the movable rack. The movable rack is arranged parallel to the telescopic cylinder. A guide wheel is installed on the side of the box facing the rebar detector.

[0008] Preferably, two lifting cylinders are arranged at intervals. The fixed ends of the two lifting cylinders are fixedly connected to the lower surface of the moving part, and the telescopic ends of the two lifting cylinders are fixedly connected to the fixed ends of the moving cylinders. The telescopic ends of the moving cylinders are fixedly provided with mounting plates. The upper part of the mounting plate facing the fixed block is detachably connected to a rebar detector and a nozzle.

[0009] Preferably, the fixing block further includes a fixing plate and a mounting block; the mounting block is connected to the output end of the telescopic cylinder through a connector, an auxiliary plate is provided inside the fixing plate, a through shaft is fixedly provided in the middle of the auxiliary plate, the auxiliary plate is connected to the mounting block through the through shaft, the through shaft extends upward through the mounting block and is fastened by a nut, a pad is provided on both sides of the mounting block, and the fixing plate, the pad and the mounting block are fastened by bolts.

[0010] Preferably, a connecting device is installed inside the housing, and the connecting device is equipped with a control module. The control module is electrically connected to the lifting cylinder, the moving cylinder, the telescopic cylinder, the rust detector, and the rebar detector. The connecting device is connected to a display.

[0011] Preferably, the pigment tank and the nozzle are connected by a flexible hose, which is threaded onto a guide wheel and has a control valve that is electrically connected to the control module.

[0012] Preferably, a magnetic block is fixedly provided at the end of the driven gear, and the rust detector and the magnetic block are attracted or released by magnetic attraction; a magnetic seat is fixedly provided on the upper part of the mounting plate, and the rebar detector and the magnetic seat are attracted or released by magnetic attraction.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] This utility model provides an in-situ testing device for steel reinforcement corrosion in concrete. The device can be fixed to a high pier or beam bottom using a fixing block, allowing the connecting box and the testing equipment installed at the bottom of the connecting box to be close to the location to be tested. The movement of the lifting cylinder and the moving cylinder drives the steel reinforcement detector or corrosion detector installed on the telescopic end of the moving cylinder to move and detect the steel reinforcement, marking its location and checking its condition. This device is suitable for locations difficult to inspect manually, such as high piers or beam bottoms, greatly reducing manual operation. The corrosion detector is rotatably mounted on the telescopic end of the moving cylinder to prevent it from contacting the side wall of the high pier or beam bottom during operation, thus avoiding interference with the test results and reducing the impact on the safety of the corrosion detector equipment. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] Figure 1 This is a schematic diagram of the connection structure of an in-situ testing device for steel reinforcement corrosion in concrete, as described in an embodiment of this utility model.

[0017] Figure 2 This is a schematic diagram of the structure of an in-situ testing device for steel reinforcement corrosion in concrete, as described in an embodiment of this utility model.

[0018] Figure 3 This is an exploded structural diagram showing the connection between the moving component and the rust detector, the rebar detector, and the nozzle in an embodiment of this utility model.

[0019] Figure 4 This is an exploded structural diagram showing the connection of the connecting box, the moving component, and the fixing block in an embodiment of this utility model;

[0020] Figure 5 This is a half-sectional view of the fixing block in an embodiment of the present invention;

[0021] Figure 6 This is a cross-sectional view of the fixing block in one of the embodiments of this utility model.

[0022] Reference numerals: 1. Connecting box; 11. Box body; 111. Base plate; 112. Slide groove; 113. Moving rack; 12. Telescopic cylinder; 13. Guide wheel; 14. Paint box; 15. Connecting device; 16. Moving part; 161. Slider; 17. Moving gear; 2. Moving assembly; 21. Lifting cylinder; 22. Moving cylinder; 221. Mounting plate; 23. Rotating gear set; 25. Magnetic block; 3. Rust detector; 4. Rebar detector; 5. Fixing block; 51. Joint; 52. Fixing plate; 53. Pad; 54. Mounting block; 55. Auxiliary plate; 6. Nozzle. Detailed Implementation

[0023] 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.

[0024] Specific implementation examples Figure 1-6 As shown: An in-situ testing device for steel reinforcement corrosion in concrete includes a connecting box 1, a moving component 2, a corrosion detector 3, a steel reinforcement detector 4, and a fixing block 5. The connecting box 1 includes a box body 11. One side of the box body 11 is connected to a connector 51 fixedly installed on the side of the fixing block 5 via an installed telescopic cylinder 12. The moving component 2 is slidably installed at the bottom of the box body 11. The moving component 2 includes a vertically installed lifting cylinder 21 and a moving cylinder 22. The steel reinforcement detector 4 is fixedly installed at the telescopic end of the moving cylinder 22. A nozzle 6 is installed above the steel reinforcement detector 4. The nozzle 6 communicates with a pigment box 14 installed inside the box body 11. The corrosion detector 3 is rotatably installed on the side of the steel reinforcement detector 4 away from the connecting box 1.

[0025] The corrosion detector 3 uses the resistivity method for detection. The corrosion detector 3 is equipped with a four-electrode probe to directly detect corrosion on the concrete surface.

[0026] The connecting box 1 also includes a guide wheel 13, a connecting device 15, and a moving part 16; a base plate 111 is fixedly installed at the bottom of the box body 11, and a slide groove 112 is fixedly installed in the middle of the base plate 111. The slide groove 112 is parallel to the axis of the telescopic cylinder 12. A slider 161 is fixedly installed in the middle of the upper surface of the moving part 16. The slider 161 is inserted into and slidably connected to the slide groove 112. A moving rack 113 is fixedly installed on one side of the slide groove 112. A moving gear 17 is rotatably installed at one end of the surface of the slider 161. The moving gear 17 is meshed with the moving rack 113. The moving gear 17 is driven by a moving motor (not shown in the figure). The lower surface of the moving part 16 is connected to the moving assembly 2. When the moving gear 17 rotates, it drives the moving part 16 and the moving assembly 2 connected to its lower surface to move along the extension direction of the axis of the telescopic cylinder 12; the connecting device 15 is installed inside the box body 11, and the paint box 14 stores paint for marking the position of the reinforcing bars. The colored spray paint has a flexible hose at the output port of the paint tank 14 connected to the nozzle 6, with a control valve connected to the hose. The connecting device 15 is equipped with a control module, which is electrically connected to the lifting cylinder 21, moving cylinder 22, telescopic cylinder 12, moving motor, control valve, rust detector 3, and rebar detector 4. The control module can output adjustment commands to the lifting cylinder 21, moving cylinder 22, and telescopic cylinder 12 to adjust their actions. The control module can also control the operation of the rust detector 3 and rebar detector 4, and can also control the on / off of the control valve to make the nozzle 6 spray paint to mark the position of the rebar. The connecting device 15 is connected to a display to show the rebar detection results. The housing 11 has a guide wheel 13 on the side facing the rebar detector 4. The connecting device 15 is connected to the rust detector 3 and the rebar detector 4 through connecting wires (not shown in the figure). The guide wheel 13 can separate the flexible hose or connecting wire to make the flexible hose or connecting wire neat and tidy.

[0027] The moving component 2 also includes a rotary gear set 23 and a magnetic block 25; the fixed end of the lifting cylinder 21 is vertically fixedly connected to the lower surface of the moving component 16, two lifting cylinders 21 are spaced apart, and the telescopic ends of the two lifting cylinders 21 are vertically fixedly connected to the fixed end of the moving cylinder 22. The axis of the moving cylinder 22 is perpendicular to the axis of the telescopic cylinder 12. The telescopic end of the moving cylinder 22 is fixedly provided with a mounting plate 221. The upper part of the mounting plate 221 facing the fixed block 5 is respectively connected to a rebar detector 4 and a nozzle 6. The rebar detector 4 is detachably connected to the mounting plate 221 through a magnetic seat fixedly provided on the mounting plate 221. The rebar detector 4 and the magnetic seat are attracted or released by magnetic attraction. The structure of the magnetic seat is existing technology. The rebar detector 4 is used to detect the position of the rebar in the pier or beam. The nozzle 6 sprays out spray material to mark the position of the rebar. The lower part of the mounting plate 221 away from the moving cylinder 22 is rotatably provided with a rotary gear set 23. The rotary gear set 23 includes a meshing drive gear and a driven gear. The drive gear and the driven gear are both meshed with the moving cylinder 22. Mounting plate 221 is rotatably connected, and a magnetic block 25 is fixedly installed at the end of the driven gear. The magnetic block 25 and the rust detector 3 are attracted or released by magnetic attraction. The structure of the magnetic block 25 is existing technology. The rotating gear set 23 is driven by a rotating motor (not shown in the figure). The rotating motor is electrically connected to the control module. The rotating motor is fixedly installed at the lower part of mounting plate 221. The output shaft of the rotating motor passes through mounting plate 221 and is fixedly connected to the driving gear. The relative position of the rust detector 3 can be adjusted by gear transmission. After the rebar detector 4 detects the position of the rebar and marks it with the nozzle 6, the rust detector 3 is adjusted to rotate so that its probe faces the side wall of the pier or the bottom of the beam until the probe is set perpendicular to the side wall of the pier or the bottom of the beam, so that the rust detector 3 can perform detection work. When the rebar detector 4 is working, the rust detector 3 is adjusted so that its probe is parallel to the side wall of the pier or the bottom of the beam to prevent the rust detector 3 from contacting the side wall of the pier or the bottom of the beam when the rebar detector 4 and the nozzle 6 are working, thus affecting the detection results and reducing the impact on the safety of the rust detector 3.

[0028] The fixing block 5 also includes a fixing plate 52, a pad 53, a mounting block 54, and an auxiliary plate 55; the connector 51 is fixedly mounted on the mounting block 54, the side wall of the mounting block 54 is connected to the output end of the telescopic cylinder 12, the fixing plate 52 is fixedly connected to the surface of the pier or the side wall of the beam by screws, the fixing plate 52 has a U-shaped cross section, the auxiliary plate 55 is provided inside the fixing plate 52, a through shaft is fixedly provided in the middle of the auxiliary plate 55, the auxiliary plate 55 is connected to the mounting block 54 through the through shaft, the through shaft extends upward through the mounting block 54 and is fastened by nuts, the pads 53 are respectively provided on both sides of the mounting block 54, and the fixing plate 52, the pads 53 and the mounting block 54 are fastened by bolts, which makes it easy to fix the device on the pier or beam.

[0029] The operating procedure and working principle of this device are as follows:

[0030] Move the device to a high pier or beam, adjust the housing 11 so that its bottom contacts the edge of the pier surface or the side wall of the beam, adjust the telescopic cylinder 12 to move the fixing block 5 to a suitable position, and fasten the fixing block 5 to the pier surface or the side wall of the beam with screws; adjust the moving gear 17 to rotate, so that the moving part 16 drives the components installed on the moving part 16 to move closer to the bottom of the pier or beam until the rebar detector 4 contacts the bottom of the pier or beam, adjust the telescopic cylinder 22 to move it horizontally to first detect the position of the rebar in the bottom of the pier or beam, and after the rebar detector 4 detects the position of the rebar, it transmits a signal to the control module, and the control module controls the nozzle 6 to spray out the spray. The rebar is marked with its position; the control module adjusts the movement of the moving cylinder 22 and the lifting cylinder 21 to repeatedly detect the rebar from top to bottom until the rebar in the detection area is completed; the moving part 16 is adjusted to move away from the high pier or the bottom of the beam, and the rust detector 3 is adjusted to rotate so that the probe faces the high pier or the bottom of the beam. The moving part 16 is adjusted to move so that the probe on the rust detector 3 contacts the high pier or the bottom of the beam. The rebar condition is detected according to the rebar marking position, and the rebar condition result is transmitted to the control module. The moving cylinder 22 and the lifting cylinder 21 are adjusted to make the rust detector 3 detect the rebar condition at the rebar marking position from bottom to top until the detection is completed. The device is then removed from the high pier or the beam.

Claims

1. An in-situ testing device for steel reinforcement corrosion in concrete, characterized in that: The device includes a connecting box, a moving component, a corrosion detector, a rebar detector, and a fixing block. The connecting box includes a box body, one side of which is connected to a connector fixedly installed on the side of the fixing block via an installed telescopic cylinder. A moving component is slidably installed at the bottom of the box body. The moving component includes a vertically installed lifting cylinder and a moving cylinder. A rebar detector is fixedly installed at the telescopic end of the moving cylinder. A nozzle is installed above the rebar detector and communicates with a paint box installed inside the box. A corrosion detector is rotatably installed on the side of the rebar detector away from the connecting box.

2. The in-situ testing device for steel reinforcement corrosion in concrete according to claim 1, characterized in that: The moving component also includes a rotary gear set; a rotary gear set is rotatably provided on the lower part of the mounting plate, the rotary gear set including a driving gear and a driven gear that are meshed together, both of which are rotatably connected to the mounting plate, and a rust detector is detachably connected to the end of the driven gear.

3. The in-situ testing device for steel reinforcement corrosion in concrete according to claim 2, characterized in that: The bottom of the box is slidably connected to a movable component via a fixed base plate. A movable rack is fixedly installed on the base plate. A movable gear is rotatably installed at one end of the movable component. The movable gear meshes with the movable rack. The movable rack is arranged parallel to the telescopic cylinder. A guide wheel is installed on the side of the box facing the rebar detector.

4. The in-situ testing device for steel reinforcement corrosion in concrete according to claim 3, characterized in that: Two lifting cylinders are spaced apart. The fixed ends of the two lifting cylinders are fixedly connected to the lower surface of the moving part, and the telescopic ends of the two lifting cylinders are fixedly connected to the fixed ends of the moving cylinders. The telescopic ends of the moving cylinders are fixedly equipped with mounting plates. The upper part of the mounting plates facing the fixed block is detachably connected to a rebar detector and a nozzle.

5. The in-situ testing device for steel reinforcement corrosion in concrete according to claim 1, characterized in that: The fixing block also includes a fixing plate and a mounting block; the mounting block is connected to the output end of the telescopic cylinder through a connector, an auxiliary plate is provided inside the fixing plate, a through shaft is fixedly provided in the middle of the auxiliary plate, the auxiliary plate is connected to the mounting block through the through shaft, the through shaft extends upward through the mounting block and is fastened by a nut, a pad is provided on both sides of the mounting block, and the fixing plate, pad and mounting block are fastened by bolts.

6. The in-situ testing device for steel reinforcement corrosion in concrete according to claim 3, characterized in that: The housing is equipped with a connection device, which is equipped with a control module. The control module is electrically connected to the lifting cylinder, the moving cylinder, the telescopic cylinder, the rust detector, and the rebar detector. The connection device is also connected to a display.

7. The in-situ testing device for steel reinforcement corrosion in concrete according to claim 6, characterized in that: The pigment tank and the nozzle are connected by a flexible hose, which is threaded onto a guide wheel. A control valve is installed on the flexible hose and is electrically connected to the control module.

8. The in-situ testing device for steel reinforcement corrosion in concrete according to claim 4, characterized in that: A magnetic block is fixedly installed at the end of the driven gear, and the rust detector and the magnetic block are attracted or released by magnetic attraction; a magnetic seat is fixedly installed on the upper part of the mounting plate, and the rebar detector and the magnetic seat are attracted or released by magnetic attraction.

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