CN221199545U - Reinforcing bar position detection device - Google Patents

Abstract

The utility model discloses a steel bar position detection device, and relates to the technical field of steel bar position detection. This rebar position detection device includes: the upper shell is detachably connected to the upper surface of the lower shell, and a hollow shell structure is formed between the lower shell and the upper shell; the permanent magnet is fixedly connected to one end of the inner part of the lower shell; the detection plate is embedded into one end of the inner part of the upper shell, the detection plate is integrated with a Hall sensor array, and a PCB assembly is arranged in the shell structure. The main reinforcement of a certain section in the cement pole tower can be rapidly oriented and positioned, and the detection process is ensured to move along the main reinforcement in the reinforced concrete structure.

Description

A steel bar position detection device

Technical Field

The utility model relates to the technical field of steel bar position detection, in particular to a steel bar position detection device.

Background technique

There are many methods for testing the material and status of steel bars in reinforced concrete structures. According to the damage to the structure caused by the testing process, there are two major categories: destructive testing and non-destructive testing. Non-destructive testing is divided into infrared scanning, X-ray scanning and electromagnetic induction according to the testing principle.

The steel bar magnetic induction detection method uses a certain electromagnetic transmitter to emit electromagnetic waves into the interior of the concrete. When the electromagnetic waves are affected by the steel bar structure inside the concrete, a corresponding secondary induced magnetic field will be generated. The thickness of the steel bar protective layer in the concrete is analyzed by receiving the electromagnetic wave intensity of the generated secondary induced magnetic field. The magnetic field coil generates a high-pulse primary electromagnetic field in the concrete to be inspected. When encountering a metal object in the concrete, the object will induce a secondary electromagnetic field. Each pulse gap of the electromagnetic field generated by the magnetic field coil will cause the attenuation of the secondary electromagnetic field, which will cause the voltage of the induction coil to change.

At present, a single receiving detection end (Hall sensor) is usually used. It is difficult to determine the direction and location of a section of steel bars by using a single Hall sensor detection method. When a single Hall sensor moves obliquely and deviates from the steel bars, it is easy to deviate from the position between the steel bars due to the deviation in the moving direction, thus affecting the detection results.

Utility Model Content

1. Technical issues to be resolved

In view of the deficiencies in the prior art, the utility model provides a steel bar position detection device, which solves the problem that a single Hall sensor detection method is prone to deviate from the position between the steel bars and affect the detection result.

(II) Technical solution

To achieve the above purpose, the utility model is implemented through the following technical solutions: a steel bar position detection device, comprising:

A lower shell and an upper shell detachably connected to the upper surface of the lower shell, wherein the lower shell and the upper shell form a hollow shell structure;

A permanent magnet, wherein the permanent magnet is fixedly connected to one end of the lower shell;

A detection board, wherein the detection board is embedded in one end of the upper shell, and a Hall sensor array is integrated on the detection board. A PCB board assembly is arranged inside the shell structure, and the PCB board assembly includes a drive circuit PCB board, a detection circuit PCB board, and a control circuit PCB board. The Hall sensor array is electrically connected to the detection circuit PCB board, and the detection circuit PCB board is electrically connected to the drive circuit PCB board and the control circuit PCB board;

The Hall sensor array includes nine Hall sensors arranged in a nine-square grid, and the permanent magnet is directly opposite to the Hall sensor position in the middle of the Hall sensor array.

Preferably, the shell structure is made of aluminum alloy.

Preferably, a limit stop wall is provided at one end inside the lower shell, and the permanent magnet is supported between the limit stop wall and the side wall of the inner cavity of the lower shell.

Preferably, a limit support plate is arranged between two opposite side walls of the inner cavity of the lower shell, the limit support plate is parallel to the limit stop wall, and one end of the limit support plate away from the inner wall of the lower shell is supported on the outer wall of the permanent magnet.

Preferably, the side wall of the lower shell, the limit retaining wall, and the bottom of one of the limit support plates are all provided with wiring holes, and the wiring holes on the lower shell, the limit retaining wall, and its limit support plate are located in corresponding positions.

Preferably, both sides of the interior of the upper shell are provided with limit side blocks, the detection plate is in an I-shape, and both sides of the detection plate are respectively clamped at the limit side blocks on both sides.

Preferably, the drive circuit PCB board, the detection circuit PCB board and the control circuit PCB board are stacked vertically in sequence, and the sides of the drive circuit PCB board, the detection circuit PCB board and the control circuit PCB board are provided with positioning grooves, and positioning rods are inserted in the positioning grooves. Plug sockets are provided inside the lower shell and the upper shell, and the ends of the positioning rods are inserted in the plug sockets.

Preferably, the positioning rod includes a rod body, and a plurality of positioning rings are sleeved on the outer wall of the rod body, and two adjacent positioning rings are clamped on the upper and lower sides of the driving circuit PCB board, the detection circuit PCB board and the control circuit PCB board, and both ends of the positioning rod are plug connectors, which are plugged into the socket.

(III) Beneficial effects

The utility model provides a steel bar position detection device, which has at least the following beneficial effects compared with the prior art:

The direction of the main reinforcement of a certain section in the concrete tower can be quickly located to ensure that the detection process moves along the main reinforcement in the reinforced concrete structure.

The Hall sensor array is composed of eight peripheral edge Hall sensors and one central Hall sensor, forming a rectangular structure composed of nine edge Hall sensors, and the central Hall sensor is located at the center of the nine edge Hall sensors.

The Hall sensor array collects magnetic field strength values at nine different spatial positions at the same time, so the collected data is diverse. The center position and angle deflection of the steel bar can be determined by comparing the magnetic field strength collected by the Hall sensor at the edge.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a schematic diagram of the structure of the utility model;

FIG2 is a schematic diagram of the internal structure of the lower housing of the utility model;

FIG3 is a schematic diagram of the internal structure of the upper housing of the present invention;

FIG4 is a schematic diagram of the structure of the detection board and the Hall sensor array of the utility model;

FIG. 5 is a schematic structural diagram of a positioning rod of the utility model.

In the figure: 1. lower shell; 2. upper shell; 3. limit stop wall; 4. limit support plate; 5. permanent magnet; 6. wiring hole; 7. limit side block; 8. detection board; 9. Hall sensor array; 10. socket; 11. positioning rod; 111. rod body; 112. positioning ring; 113. plug connector; 12. PCB board assembly; 13. positioning groove.

Detailed ways

The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

Embodiment 1:

Please refer to Figures 1-5. The utility model provides a technical solution: a steel bar position detection device, comprising: a lower shell 1, an upper shell 2 detachably connected to the upper surface of the lower shell 1, a permanent magnet 5, and a detection plate 8;

The lower shell 1 and the upper shell 2 form a hollow shell structure, the permanent magnet 5 is fixedly connected to one end inside the lower shell 1, the detection board 8 is embedded in one end inside the upper shell 2, and the detection board 8 is integrated with a Hall sensor array 9, a PCB board assembly 12 is arranged inside the shell structure, the PCB board assembly 12 includes a drive circuit PCB board, a detection circuit PCB board and a control circuit PCB board, the Hall sensor array 9 is electrically connected to the detection circuit PCB board, the detection circuit PCB board is electrically connected to the drive circuit PCB board and the control circuit PCB board, the Hall sensor array 9 includes nine Hall sensors arranged in a nine-square grid, and the permanent magnet 5 is directly opposite to the Hall sensor position in the middle of the Hall sensor array 9. The shell structure is made of aluminum alloy.

Analysis of the above content: the control circuit PCB board acts as the main control circuit to control the output of the drive circuit PCB board and the detection circuit PCB board; the drive circuit PCB board drives the Hall sensor array 9 to work; the detection circuit PCB board detects and uploads the magnetic field strength value collected by the Hall sensor array 9 (the drive circuit PCB board, the detection circuit PCB board and the control circuit PCB board all adopt existing technologies and will not be elaborated here).

Based on the control of the PCB board assembly 12, nine Hall sensors are arranged in an array as shown in FIG. 4, and the Hall sensors collect magnetic field strengths at nine positions.

The permanent magnet 5 generates a magnetic field (primary magnetic field H). When the permanent magnet 5 (this device) is brought close to the test piece, an electric current - eddy current - will be induced in the test piece under the action of the primary magnetic field H. The eddy current also generates an additional magnetic field (secondary magnetic field Ns) in and around the test piece. The direction of this secondary magnetic field Ns is determined by Lenz's law and is opposite to the direction of the primary magnetic field H. These two magnetic fields are superimposed. The reaction magnetic field generated by the eddy current weakens the magnetic field of the coil, and the diameter of the steel bar is determined based on the change ratio of the weakened magnetic field.

Nine Hall sensors can collect multiple steel bar parameter detection characteristic values at the same time and can collect more diverse signals. The Hall sensors are used to measure and record the magnetic induction intensity and analyze the corrosion of the main reinforcement inside the reinforced concrete. The nine Hall sensors can quickly locate the direction of the main reinforcement of a certain section in the concrete tower, ensuring that the detection process moves along the main reinforcement in the reinforced concrete structure.

Embodiment 2:

Please refer to Figures 1-5. The utility model provides a technical solution based on the first embodiment: a limit stop wall 3 is provided at one end of the lower shell 1, and the permanent magnet 5 is supported between the limit stop wall 3 and the side wall of the inner cavity of the lower shell 1. A limit support plate 4 is provided between the two opposite side walls of the inner cavity of the lower shell 1, the limit support plate 4 is parallel to the limit stop wall 3, and one end of the limit support plate 4 away from the inner wall of the lower shell 1 is supported on the outer wall of the permanent magnet 5. The side wall of the lower shell 1, the limit stop wall 3, and the bottom of one of the limit support plates 4 are all provided with wiring holes 6, and the wiring holes 6 on the lower shell 1, the limit stop wall 3, and its limit support plate 4 correspond to each other.

Analysis of the above content: As shown in Figure 2, the limit stop wall 3 blocks the right side of the permanent magnet 5, and the two limit support plates 4 support the front and rear sides of the permanent magnet 5. The four positions of the outer wall of the permanent magnet 5 are supported and limited, which has a stable support effect on the permanent magnet 5. The wiring hole 6 is set to transmit the wires of the PCB board assembly 12 to the outside.

Embodiment three:

Please refer to Figures 1-5. The utility model provides a technical solution based on Example 1: limited side blocks 7 are provided on both sides of the interior of the upper shell 2, the detection plate 8 is in an I-shape, and the two sides of the detection plate 8 are respectively clamped at the limited side blocks 7 on both sides.

Analysis of the above content: The setting of the limit side block 7 facilitates the limitation of the detection plate 8. The side of the detection plate 8 is correspondingly engaged with the limit side block 7, and the detection plate 8 and the upper shell 2 will not move relative to each other, so that the relative positions of the detection plate 8, the Hall sensor, and the permanent magnet 5 remain unchanged.

Embodiment 4:

Please refer to Figures 1-5. The utility model provides a technical solution based on the first embodiment: the drive circuit PCB board, the detection circuit PCB board and the control circuit PCB board are stacked longitudinally in sequence, and the sides of the drive circuit PCB board, the detection circuit PCB board and the control circuit PCB board are provided with positioning grooves 13, and the positioning rods 11 are inserted in the positioning grooves 13. The lower shell 1 and the upper shell 2 are both provided with plug sockets 10, and the ends of the positioning rods 11 are inserted in the plug sockets 10. The positioning rods 11 include a rod body 111, and a plurality of positioning rings 112 are sleeved on the outer wall of the rod body 111. Two adjacent positioning rings 112 are clamped on the upper and lower sides of the drive circuit PCB board, the detection circuit PCB board and the control circuit PCB board. Both ends of the positioning rods 11 are plug connectors 113, and the plug connectors 113 are plugged in the plug sockets 10.

Analysis of the above content: the rod body 111 is attached to the positioning groove 13, and the positioning ring 112 clamps the drive circuit PCB board, the detection circuit PCB board and the control circuit PCB board from the upper and lower sides, so that the drive circuit PCB board, the detection circuit PCB board and the control circuit PCB board maintain a relative distance. Then, the plug connector 113 is plugged into the socket 10, and under the clamping cooperation of the lower shell 1 and the upper shell 2, the drive circuit PCB board, the detection circuit PCB board and the control circuit PCB board are kept stable with the shell structure.

It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims (8)

1. A steel bar position detection device, characterized in that it comprises: A lower shell (1) and an upper shell (2) detachably connected to the upper surface of the lower shell (1), wherein the lower shell (1) and the upper shell (2) form a hollow shell structure; A permanent magnet (5), wherein the permanent magnet (5) is fixedly connected to one end inside the lower housing (1); A detection board (8), the detection board (8) being embedded in one end of the upper housing (2), and having an integrated Hall sensor array (9) on the detection board (8), a PCB board assembly (12) being arranged inside the housing structure, the PCB board assembly (12) comprising a drive circuit PCB board, a detection circuit PCB board and a control circuit PCB board, the Hall sensor array (9) being electrically connected to the detection circuit PCB board, and the detection circuit PCB board being electrically connected to the drive circuit PCB board and the control circuit PCB board; The Hall sensor array (9) comprises nine Hall sensors arranged in a nine-square grid, and the permanent magnet (5) is directly opposite to the Hall sensor position in the middle of the Hall sensor array (9). 2. A steel bar position detection device according to claim 1, characterized in that the shell structure is made of aluminum alloy. 3. A steel bar position detection device according to claim 1, characterized in that: a limit stop wall (3) is provided at one end inside the lower shell (1), and the permanent magnet (5) is supported between the limit stop wall (3) and the inner cavity side wall of the lower shell (1). 4. A steel bar position detection device according to claim 1, characterized in that: a limit support plate (4) is arranged between two opposite side walls of the inner cavity of the lower shell (1), the limit support plate (4) is parallel to the limit retaining wall (3), and one end of the limit support plate (4) away from the inner wall of the lower shell (1) is supported on the outer wall of the permanent magnet (5). 5. A steel bar position detection device according to claim 4, characterized in that: the side wall of the lower shell (1), the limit retaining wall (3), and the bottom of one of the limit support plates (4) are all provided with wiring holes (6), and the positions of the wiring holes (6) on the lower shell (1), the limit retaining wall (3), and its limit support plate (4) correspond to each other. 6. A steel bar position detection device according to claim 1, characterized in that: both sides of the interior of the upper shell (2) are provided with limit side blocks (7), the detection plate (8) is in an I-shape, and both sides of the detection plate (8) are respectively clamped at the limit side blocks (7) on both sides. 7. A steel bar position detection device according to claim 1, characterized in that: the drive circuit PCB board, the detection circuit PCB board and the control circuit PCB board are stacked longitudinally in sequence, the sides of the drive circuit PCB board, the detection circuit PCB board and the control circuit PCB board are provided with positioning grooves (13), a positioning rod (11) is inserted into the positioning groove (13), the lower shell (1) and the upper shell (2) are both provided with a socket (10), and the end of the positioning rod (11) is inserted into the socket (10). 8. A steel bar position detection device according to claim 7, characterized in that: the positioning rod (11) comprises a rod body (111), a plurality of positioning rings (112) are sleeved on the outer wall of the rod body (111), two adjacent positioning rings (112) are clamped on the upper and lower sides of the drive circuit PCB board, the detection circuit PCB board and the control circuit PCB board, and both ends of the positioning rod (11) are plug connectors (113), and the plug connectors (113) are plugged into the socket (10).