A steel bar corrosion instrument

Abstract

The present application relates to the technical field of steel bar corrosion detection, and in particular to a steel bar corrosion meter, which includes a detection host, a signal line and a detection electrode electrically connected to each other, a detection end cap installed at the end of the detection electrode, a sponge strip installed on the detection end cap, a mounting bracket provided at the end of the detection electrode away from the sponge strip, a circular ring frame provided on the mounting bracket for drawing lines and markings, the circular ring frame being coaxial with the detection electrode, and the circular ring frame and the sponge strip being located in the same plane, and a driving assembly for driving the circular ring frame to rotate is also provided on the mounting bracket. The present application has the effect of forming a circular marking line around the measuring point when the sponge strip abuts against the detection surface for detection, thereby improving the accuracy of the marking line and completing the line drawing while detecting, without the need for the operator to draw the line in advance, thereby improving work efficiency and improving the problem of increasing the detection workload and affecting the detection efficiency due to the need to draw points before detection.

Description

Technical Field

[0001] The present application relates to the technical field of steel bar corrosion detection, and in particular to a steel bar corrosion instrument. Background Art

[0002] With the advancement of modern technology, the construction industry is also exploring scientific methods. For example, research has begun on rebar material performance testing technology based on BP neural networks. Corroded rebar can affect its material properties, so it is often necessary to test the extent of corrosion within concrete structures. A rebar corrosion tester is a commonly used instrument for detecting rebar corrosion.

[0003] A typical rebar corrosion tester consists of a main unit connected via a signal cable to a cylindrical test electrode filled with a saturated copper sulfate solution. The end of the electrode, away from the signal cable, is fitted with a test cap, which is attached to a sponge strip. Before testing, the test point is determined. The sponge strip on the test electrode is then brought into contact with the test point. The test results are displayed and stored in the main unit. This process is repeated for all test points.

[0004] Regarding the above-mentioned related technologies, the inventor believes that when using the steel corrosion meter, it is necessary to draw several detection points on the concrete to be tested in advance before testing. When the detection area is large, the detection workload is increased and the detection efficiency is low. Summary of the Invention

[0005] In order to improve the problem that points need to be drawn before detection, which increases the detection workload and affects the detection efficiency, the present application provides a steel bar corrosion meter.

[0006] This application provides a steel bar corrosion instrument, which adopts the following technical solutions:

[0007] A steel bar corrosion instrument includes a detection host, a signal line and a detection electrode electrically connected to each other, a detection end cover installed at the end of the detection electrode, a sponge strip installed on the detection end cover, a mounting bracket provided at the end of the detection electrode away from the sponge strip, a circular frame for drawing lines and markings provided on the mounting bracket, the circular frame being coaxial with the detection electrode and located in the same plane as the sponge strip, and a drive component for driving the circular frame to rotate also provided on the mounting bracket.

[0008] By adopting the above technical solution, when the sponge strip of the detection electrode abuts against the detection surface, the driving component drives the ring frame to rotate, so that a circular marking line can be formed around the measuring point. On the one hand, the axis of the marking line drawn by the ring frame is the exact center position of the measuring point, and the marking line is more accurate. On the other hand, the line drawing can be completed during the detection, and the operator does not need to draw the line in advance, thereby improving work efficiency and improving the problem of needing to draw points before detection, which increases the detection workload and affects the detection efficiency.

[0009] Optionally, the driving assembly includes a driving ring coaxial with the detection electrode and a linkage part for converting the deformation path of the sponge strip into rotational power of the driving ring, and a connecting rod for connecting the ring frame is fixedly provided on the side wall of the driving ring; at the same time, a thrust ball bearing is fixedly provided between the driving ring and the mounting bracket, and the gap in the middle of the driving ring can form a signal connection channel for electrically connecting the signal line and the detection electrode.

[0010] By adopting the above technical solution, when the linkage part drives the driving ring to rotate, it can drive the connecting rod to rotate, thereby realizing the rotation of the ring frame, and a circular driving ring and a thrust ball bearing are provided, so that the setting of the driving ring does not affect the normal signal line connection, which is convenient for modification and improves practicality.

[0011] Optionally, the linkage part includes a cylinder coaxially fixed to the side wall of the driving ring and a driving member capable of displacing in the same direction as the sponge strip, and the driving member moves back and forth along the axis of the cylinder; and a protrusion is provided on the driving member, and a plurality of spiral grooves are evenly opened on the circumferential outer wall of the cylinder, and one end of the protrusion can be inserted into the spiral groove.

[0012] By adopting the above technical solution, when the driving member moves synchronously with the sponge strip, the driving member can move along the axis of the detection electrode, driving the protrusion to move synchronously. Since the protrusion is inserted into the spiral groove and the protrusion can only move along the axis of the cylinder, the cylinder is forced to rotate. Since the cylinder and the driving ring are fixedly connected, the rotation of the cylinder will drive the driving ring to rotate, thereby driving the connecting rod and the ring frame to rotate, thereby realizing synchronous drawing of lines when the sponge strip moves.

[0013] Optionally, a universal ball is fixedly provided on the end of the protrusion facing the spiral groove, and the universal ball is slidably connected to the inner wall of the spiral groove.

[0014] By adopting the above technical solution, the friction between the bump and the spiral groove is reduced, the sliding is smoother, and the force required to push the bump externally is reduced, making the linkage induction more sensitive and improving the linkage performance.

[0015] Optionally, the driving member includes a sliding frame that is slidably arranged on the mounting bracket along the axis of the detection electrode and a top rod that is slidably arranged on the detection end cover along the axis of the detection electrode. The sliding frame moves synchronously with the top rod, and the protrusion is arranged on the inner wall of the sliding frame; the end of the top rod away from the driving ring is located in the same plane as the sponge strip.

[0016] By adopting the above technical solution, when the sponge strip abuts against the detection surface for detection, the push rod and the sponge strip abut against the detection surface at the same time, so that the push rod is displaced, and the sliding frame and the push rod move synchronously, that is, the movement of the push rod can drive the sliding frame to synchronously approach the driving ring along the axis of the detection electrode, thereby driving the protrusion to move along the axis of the cylinder, and the protrusion can drive the cylinder, the driving ring and the ring frame to rotate, thereby realizing the linkage between the sponge strip and the ring frame.

[0017] Optionally, the push rod is separately provided from the sliding frame, and the push rod abuts against the end of the sliding frame, and one end of the push rod can also be slidably connected to the end surface of the sliding frame.

[0018] By adopting the above technical solution, the sliding frame can be displaced synchronously under the push of the push rod; at the same time, the push rod and the sliding frame are separately arranged, so that the push rod can be installed or removed together with the detection end cover; and because the push rod can abut and push the sliding frame, it can also slide on the end face of the sliding frame, thereby reducing the requirements for the installation method of the detection end cover. The detection end cover can be installed by plug-in or by threaded connection, thereby improving practicality.

[0019] Optionally, a plurality of return springs are evenly distributed on the end of the sliding frame away from the push rod, one end of the return spring away from the sliding frame is arranged on the mounting bracket, and the telescopic axis of the return spring is parallel to the sliding direction of the sliding frame.

[0020] By adopting the above technical solution, when the detection electrode leaves the detection surface after detection, the push rod and the sliding frame lose the external force. At this time, the sliding frame can be reset under the action of the reset spring, and the push rod can also be reset under the reverse push of the sliding frame, so that the entire device is restored to the state before detection, which is convenient for the next detection and line drawing, and improves practicality.

[0021] Optionally, an inner rod is slidingly provided inside the connecting rod, a buffer spring is provided at the end of the inner rod, the inner rod passes through the connecting rod and is connected to the circular ring frame, and the telescopic axis of the buffer spring is parallel to the axis of the detection electrode.

[0022] By adopting the above technical solution, the circular ring frame can move back and forth along the axis of the detection electrode. On the one hand, it can adapt to marking pens of different lengths. On the other hand, after the circular ring frame and the sponge strip are displaced together, the buffer spring is forced to contract, and the buffer spring can provide a reaction force to make the marking pen on the circular ring frame contact the detection surface more tightly, thereby improving the drawing effect.

[0023] Optionally, a plurality of circular grooves for inserting marker pens are formed through the circular ring frame, and a plurality of elastic members for clamping the marker pens are evenly arranged on the inner walls of the circular grooves.

[0024] By adopting the above technical solution, the marker pen can be directly inserted into the circular groove during installation, which makes installation more convenient and improves practicality.

[0025] Optionally, a handle is detachably connected between the two mounting brackets.

[0026] By adopting the above technical solution, the two mounting brackets can be connected together through the handle, which can meet the requirements of dual-electrode detection or single-electrode detection at the same time, thereby improving practicality.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] When the sponge strip of the detection electrode contacts the detection surface, the ring frame rotates to form a circular marking line around the measuring point. This not only makes the marking line more accurate, but also allows the line to be drawn while the test is in progress. This eliminates the need for the operator to draw the line in advance, improving work efficiency and addressing the issue of increased workload and reduced efficiency caused by the need to draw points before testing.

[0029] The push rod can move along with the sponge strip. At the same time, the sliding frame drives the protrusion to slide in the spiral groove under the push of the push rod, forcing the cylinder to rotate, thereby driving the driving ring, connecting rod and ring frame to rotate, so as to achieve synchronous drawing when the sponge strip moves. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a three-dimensional diagram of the dual-electrode detection of an embodiment of the present application.

[0031] Figure 2 It is a three-dimensional diagram of the mounting bracket and the detection electrode during single detection in an embodiment of the present application.

[0032] Figure 3 It is a schematic diagram of the internal structure of the mounting bracket of an embodiment of the present application.

[0033] Figure 4 It is a cross-sectional view of the mounting bracket of an embodiment of the present application.

[0034] Figure 5It is a structural schematic diagram of the detection end cover and the circular ring frame of an embodiment of the present application.

[0035] Figure 6 yes Figure 5 Enlarged schematic diagram of point A in the middle.

[0036] Explanation of the accompanying symbols: 1. Detection host; 2. Detection electrode; 3. Mounting bracket; 4. Signal line; 5. Handle; 6. Detection end cover; 7. Sponge strip; 8. Drawing device; 9. Ring frame; 10. Drive assembly; 11. Drive cavity; 12. Drive ring; 13. Linkage part; 14. Cylinder; 15. Drive member; 16. Thrust ball bearing; 17. Mounting groove; 18. Signal connection channel; 19. Sliding frame; 20. Inner ring; 21. Outer ring; 22. Connecting rod; 23. Inner slide groove; 24. Outer slide groove; 25. Limiting groove; 26. Bump; 27. Universal ball; 28. Spiral groove; 29. ​​Reset spring; 30. Push rod; 31. Limiting block; 32. Arc groove; 33. Connecting rod; 34. Inner rod; 35. Buffer spring; 36. Circular groove; 37. Elastic member. DETAILED DESCRIPTION

[0037] The following is combined with Figure 1-6 This application is described in further detail.

[0038] The present application embodiment discloses a steel bar corrosion instrument, referring to Figure 1 , including a detection host 1, a detection electrode 2 and a mounting bracket 3 for mounting the detection electrode 2. The detection host 1 is electrically connected to a signal line 4, and the end of the signal line 4 away from the detection host 1 is electrically connected to the detection electrode 2; a handle 5 is also detachably connected between the two mounting brackets 3 by means of a buckle or bolt, etc., to facilitate dual-electrode detection.

[0039] Reference Figure 2 The end of the detection electrode 2 away from the mounting bracket 3 is detachably mounted with a detection end cap 6 by means of threads or snap-on connections. A sponge strip 7 is plugged into the detection end cap 6 for contacting the detection surface for detection. The mounting bracket 3 is also provided with a drawing device 8 for synchronously drawing lines during detection. The drawing device 8 includes a circular frame 9 coaxial with the detection electrode 2 and a drive assembly 10 for driving the circular frame 9 to rotate. The circular frame 9 and the sponge strip 7 are located in the same plane away from the side wall of the mounting bracket 3. A marking pen for drawing lines can be plugged into the circular frame 9.

[0040] Reference Figure 3 and Figure 4A driving cavity 11 is provided in the mounting bracket 3, and the driving cavity 11 is in an inverted T shape. The driving assembly 10 includes a driving ring 12 arranged in the driving cavity 11 and a linkage part 13 for converting the deformation path of the sponge strip 7 into the rotational power of the driving ring 12; the linkage part 13 includes a cylinder 14 coaxially fixed to the side wall of the driving ring 12 and a driving member 15 for driving the cylinder 14 to rotate. The side wall of the driving ring 12 away from the cylinder 14 is fixedly connected to the inner wall of the driving cavity 11 with a thrust ball bearing 16, and the side wall of the cylinder 14 away from the driving ring 12 is also fixedly connected to the inner wall of the driving cavity 11 with a thrust ball bearing 16, and the two thrust ball bearings 16 are coaxial with the driving ring 12, and the cylinder 14 and the driving ring 12 can rotate along their own axes in the driving cavity 11.

[0041] Reference Figure 3 and Figure 4 A mounting groove 17 for mounting the detection electrode 2 is also provided on the outer wall of the mounting bracket 3 away from the driving ring 12, and the gap in the middle of the cylinder 14 and the gap in the middle of the driving ring 12 can form a signal connection channel 18. During actual installation, the detection electrode 2 and the external signal line 4 are electrically connected by extending the wire through the inner wall of the mounting groove 17, the middle of the cylinder 14, the middle of the driving ring 12 and the mounting bracket 3 in sequence, thereby ensuring smooth transmission of detection data.

[0042] Reference Figure 3 and Figure 4 The driving member 15 includes a sliding frame 19 that moves back and forth along the axis of the cylinder 14 and a push rod 30 for pushing the sliding frame 19 to move. The sliding frame 19 includes an inner ring 20, an outer ring 21 and a plurality of parallel connecting rods 22 for connecting the inner ring 20 and the outer ring 21. The inner ring 20 is coaxial with the outer ring 21, and an inner groove 23 is provided on the inner wall of the driving chamber 11 for the inner ring 20 to slide along the axis of the cylinder 14. An outer sliding groove 24 is provided on the outer side wall of the mounting bracket 3 away from the driving ring 12 for the outer ring 21 to slide along the axis of the cylinder 14. At the same time, a limiting groove 25 is provided on the inner wall of the outer sliding groove 24 for the connecting rod 22 to slide through. The inner sliding groove 23, the outer sliding groove 24 and the limiting groove 25 are connected; the entire sliding frame 19 can slide back and forth along the axis of the cylinder 14 under the limitation of the inner sliding groove 23, the outer sliding groove 24 and the limiting groove 25.

[0043] Reference Figure 3 and Figure 4Several protrusions 26 are evenly distributed and fixedly mounted on the inner wall of the inner ring 20, and universal ball transfers 27 are fixedly mounted on the ends of the protrusions 26 away from the inner ring 20. Meanwhile, several spiral grooves 28 are evenly distributed on the outer circumferential wall of the cylinder 14. Each protrusion 26 corresponds to a corresponding spiral groove 28, and each protrusion 26 can be inserted into a corresponding spiral groove 28. The universal ball transfers 27 are slidably connected to the inner wall of the spiral groove 28. When the sliding frame 19 moves, it can drive the protrusions 26 to move synchronously. Because the protrusions 26 are inserted into the spiral grooves 28 and can only move along the axis of the cylinder 14, the cylinder 14 rotates, thereby driving the ring 12 to rotate.

[0044] Reference Figure 3 and Figure 4 A number of return springs 29 are evenly distributed and fixedly arranged on the end surface of the inner ring 20 away from the outer ring 21. One end of the return spring 29 away from the inner ring 20 is fixedly arranged on the inner wall of the inner slide groove 23, and the telescopic axis of the return spring 29 is parallel to the axis of the cylinder 14, which is convenient for driving the sliding frame 19 to reset.

[0045] Reference Figure 4 and Figure 5 There are two push rods 30 in total. Both push rods 30 pass through and are slidably connected to the detection end cover 6. The sliding direction of the push rods 30 is parallel to the sliding direction of the sliding frame 19, and the push rods 30 are perpendicular to the end face of the outer ring 21. At the same time, the two push rods 30 are symmetrically distributed along the axis of the detection electrode 2. The push rod 30 is slidably connected to the end face of the outer ring 21 at one end facing the mounting bracket 3. The end of the push rod 30 away from the mounting bracket 3 passes through the detection end cover 6 and is fixed with a limit block 31. The cross-sectional area of ​​the limit block 31 is larger than the cross-sectional area of ​​the push rod 30, and the limit block 31 and the side wall of the sponge strip 7 away from the mounting bracket 3 are located in the same plane. When the sponge strip 7 abuts the detection surface for detection, the sponge strip 7 will deform and shrink. At the same time, the limit block 31 will also abut the detection surface and drive the push rod 30 to move and push the sliding frame 19 to slide, thereby driving the cylinder 14 to rotate.

[0046] Reference Figure 2 and Figure 3 Two symmetrical arcuate grooves 32 are formed on the side wall of the mounting bracket 3 away from the driving ring 12 and connected to the driving cavity 11. The geometric axis of the arcuate grooves 32 is coaxial with the driving ring 12, and the extension direction of the arcuate grooves 32 is parallel to the axis of the driving ring 12. At the same time, two connecting rods 33 are fixed and symmetrically arranged on the outer edge of the side wall of the driving ring 12 facing the cylinder 14. The connecting rods 33 correspond one-to-one with the arcuate grooves 32, and each connecting rod 33 slides through the arcuate grooves 32 and is connected to the ring frame 9. When the cylinder 14 drives the driving ring 12 to rotate, it can simultaneously drive the connecting rods 33 to slide in the arcuate grooves 32, thereby driving the ring frame 9 to rotate.

[0047] Reference Figure 3 and 5 An inner rod 34 is also slidably provided in the connecting rod 33. The inner rod 34 can be slidably connected to the connecting rod 33 along the axis direction of the detection electrode 2. One end of the inner rod 34 passes through one end of the connecting rod 33 and is fixedly connected to the circular frame 9. A buffer spring 35 is fixedly provided on the end of the inner rod 34 away from the circular frame 9. The other end of the buffer spring 35 is fixedly provided on the inner wall of the connecting rod 33. At the same time, the telescopic axis of the buffer spring 35 is parallel to the axis of the detection electrode 2.

[0048] Reference Figure 5 and Figure 6 The circular frame 9 is provided with a plurality of circular grooves 36 for inserting marker pens, and a plurality of elastic members 37 are evenly distributed and fixedly provided on the inner wall of the circular groove 36. The elastic members 37 can be elastic buckles or rubber blocks, etc. The embodiment of the present application uses rubber semicircular blocks.

[0049] The working principle of a steel bar corrosion tester according to an embodiment of the present application is as follows: when performing steel bar corrosion detection inside structural concrete, firstly, pre-test preparation is performed, the detection electrode 2 filled with saturated copper sulfate solution is inserted from the circular frame 9 and installed in the installation groove 17, then the detection end cover 6 with the push rod 30 is also inserted into the circular frame 9 and installed on the end of the detection electrode 2, and a marker is inserted into the circular groove 36 of the circular frame 9, and the mounting bracket 3 and the detection host 1 are connected via the signal line 4;

[0050] After that, the inspection is officially carried out. First, the sponge strip 7 on the inspection end cover 6 is pressed against the surface to be tested. At this time, the limit block 31 on the push rod 30 and the marker on the ring frame 9 also press against the surface to be tested. The sponge strip 7 is deformed by the force, and the inspection host 1 can perform normal inspection. At the same time, the limit block 31 and the ring frame 9 are also displaced synchronously; the displacement of the ring frame 9 makes the marker press against the inspection surface; the displacement of the limit block 31 drives the push rod 30 to push the sliding frame 19, thereby driving the protrusion 26 inside the inner ring 20 to move along the axis of the cylinder 14, and at the same time drives the cylinder 14 to rotate under the guidance of the spiral groove 28, thereby realizing the driving ring 12 to rotate; after the driving ring 12 rotates, it can drive the connecting rod 33 to rotate synchronously, thereby driving the entire ring frame 9 to rotate, so that the marker can mark the measuring point synchronously while detecting; improving the problem that points need to be drawn before detection during detection, which increases the detection workload and affects the detection efficiency.

[0051] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A steel bar corrosion tester, comprising a detection host (1), a signal line (4) and a detection electrode (2) electrically connected to each other, wherein a detection end cap (6) is installed at the end of the detection electrode (2), and a sponge strip (7) is installed on the detection end cap (6), characterized in that: A mounting bracket (3) is provided at one end of the detection electrode (2) away from the sponge strip (7); a circular ring frame (9) for marking lines is provided on the mounting bracket (3); the circular ring frame (9) is coaxial with the detection electrode (2), and the circular ring frame (9) and the sponge strip (7) are located in the same plane; and a driving component (10) for driving the circular ring frame (9) to rotate is also provided on the mounting bracket (3); The driving assembly (10) comprises a driving ring (12) coaxial with the detection electrode (2) and a linkage portion (13) for converting the deformation path of the sponge strip (7) into the rotational power of the driving ring (12); a connecting rod (33) for connecting to the ring frame (9) is fixedly arranged on the side wall of the driving ring (12); and a thrust ball bearing (16) is fixedly arranged between the driving ring (12) and the mounting bracket (3); and a gap in the middle of the driving ring (12) can form a signal connection channel (18) for electrically connecting the signal line (4) and the detection electrode (2).

2. A steel bar corrosion instrument according to claim 1, characterized in that: The linkage part (13) comprises a cylinder (14) coaxially fixed to the side wall of the driving ring (12) and a driving member (15) capable of being displaced in the same direction as the sponge strip (7), wherein the driving member (15) moves back and forth along the axis of the cylinder (14); and a convex block (26) is provided on the driving member (15), and a plurality of spiral grooves (28) are evenly formed on the circumferential outer wall of the cylinder (14), and one end of the convex block (26) can be inserted into the spiral groove (28).

3. A steel bar corrosion instrument according to claim 2, characterized in that: A universal ball (27) is fixedly provided on the end of the protrusion (26) facing the spiral groove (28), and the universal ball (27) is slidably connected to the inner wall of the spiral groove (28).

4. A steel bar corrosion instrument according to claim 2, characterized in that: The driving member (15) comprises a sliding frame (19) which is slidably arranged on the mounting bracket (3) along the axis of the detection electrode (2) and a push rod (30) which is slidably arranged on the detection end cover (6) along the axis of the detection electrode (2). The sliding frame (19) and the push rod (30) move synchronously, and the protrusion (26) is arranged on the inner wall of the sliding frame (19); the end of the push rod (30) away from the driving ring (12) is located in the same plane as the sponge strip (7).

5. A steel bar corrosion instrument according to claim 4, characterized in that: The push rod (30) is separately arranged from the sliding frame (19), and the push rod (30) abuts against the end of the sliding frame (19), and one end of the push rod (30) can also be slidably connected to the end surface of the sliding frame (19).

6. A steel bar corrosion instrument according to claim 4, characterized in that: A plurality of return springs (29) are evenly distributed on the end of the sliding frame (19) away from the top rod (30), one end of the return spring (29) away from the sliding frame (19) is arranged on the mounting bracket (3), and the telescopic axis of the return spring (29) is parallel to the sliding direction of the sliding frame (19).

7. The steel bar corrosion tester according to claim 1, characterized in that: An inner rod (34) is slidably provided inside the connecting rod (33), a buffer spring (35) is provided at the end of the inner rod (34), the inner rod (34) passes through the connecting rod (33) and is connected to the circular ring frame (9), and the expansion and contraction axis of the buffer spring (35) is parallel to the axis of the detection electrode (2).

8. The steel bar corrosion tester according to claim 1, characterized in that: The circular ring frame (9) is provided with a plurality of circular grooves (36) for inserting marking pens, and the inner wall of the circular groove (36) is evenly provided with a plurality of elastic members (37) for clamping the marking pens.

9. The steel bar corrosion tester according to claim 1, characterized in that: A handle (5) is detachably connected between the two mounting brackets (3).

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