Auxiliary device for measuring corrosion area of steel bar and working method of auxiliary device

Abstract

The invention relates to the field of steel bar corrosion detection devices, and discloses a steel bar corrosion area measurement auxiliary device and a working method thereof.The steel bar corrosion area measurement auxiliary device comprises a control displayer, a pedestal, a fixing mechanism, a base and a laser marking device; the bending plate forms an arc state under the resistance of the elastic plate to be in contact with the reinforcing steel bar in the middle of the clamping device, so that the three stress structures form a wrapping effect on the outer side of the reinforcing steel bar, the fixed area of a spiral ring on the outer side of the reinforcing steel bar is prevented from being small, and the fixed area is increased to prevent the reinforcing steel bar from rotating easily; a connecting plate in the translation structure is pushed to drive a translation rod to move relative to a rotating rod, and a cylindrical block and a friction strip abut against the outer side of the steel bar in the hollow ring, so that the scanner is driven to keep the same distance with the surface of the steel bar, the steel bar surface range shot by the scanner is kept when the size of the steel bar changes, and image overlapping caused by the change of the shooting range is prevented.

Description

Technical Field

[0001] The invention relates to the field of steel bar corrosion detection devices, in particular to a steel bar corrosion area determination auxiliary device and a working method thereof. Background Art

[0002] ‌‌Rebar corrosion‌ refers to the corrosion of steel bars in concrete structures due to environmental factors or problems with the material itself. This phenomenon will cause the performance of the steel bars to deteriorate, which in turn affects the safety and service life of the entire building. Before the steel bars are used, the area of ​​steel bar corrosion needs to be measured in advance to evaluate the strength of the steel bars. When the area of ​​steel bar corrosion is too large, it will cause the problem of strength reduction. Therefore, the existing auxiliary devices for detecting the area of ​​steel bar corrosion mainly fix and turn the steel bars to facilitate the photographing of the steel bar corrosion surface.

[0003] However, the prior art adopts the method of turning to a certain angle for measurement, rotating and photographing again after photographing, photographing the outer side of the circular steel bar multiple times and stitching them into pictures to measure the corrosion area, the steel bar is fixed by means of a triangular clamp, and the rusted surface on the surface of the steel bar will be clamped during rotation, and there is a spiral ring on the outer layer of the steel bar, which makes the clamped area of ​​the steel bar smaller. When the steel bar rotates, the clamping point is easy to slide and thus self-rotate, causing the problem that the measured area will be photographed repeatedly, and the shooting measurement adopts the method of turning to a certain angle for measurement, rotating and photographing again after photographing, photographing the outer side of the circular steel bar multiple times and stitching them into pictures to measure the corrosion area, when rotating and photographing at a certain angle, due to the different sizes of the steel bars, the shooting position is fixed, and the shooting distance changes with the size of the steel bars, which is easy to increase or decrease the shooting range, and then the shooting screen overlaps, thereby affecting the accuracy of the photographic measurement of steel bar corrosion. Summary of the invention

[0004] The invention provides a steel bar corrosion area determination auxiliary device and a working method thereof, which overcomes the shortcomings described in the background technology.

[0005] The technical solution adopted by the present invention to solve its technical problem is: A steel bar corrosion area determination auxiliary device comprises a control display, a pedestal, a fixing mechanism, a base, and a laser marker, wherein the laser marker is arranged at the upper end of the pedestal, and the laser marker is controlled by the control display at the side of the fixing mechanism, the fixing mechanism and the pedestal are fixed on the surface of the base, and the steel bar passes through the fixing mechanism from the outside and is inserted into the middle position of the pedestal; The fixing mechanism is provided with a shell, a clamp, a motor, and a processing panel. The processing panel and the motor are fixed inside the shell, and several of the motors are connected in parallel by the processing panel, and are controlled by a control display connected through the processing panel line. The clamps are equidistantly arranged in the shell and are matched by the motor thread transmission, and the center of the clamp corresponds to the steel bar passing through the fixing mechanism, and the steel bar is rotated and wrapped by the clamp in the shell.

[0006] A preferred technical solution: There are five clamps, through which one calibration steel bar and four test steel bars pass.

[0007] A better technical solution: the clamp is provided with a limiter, a support rod, a force-bearing structure, a ring plate, and a gear ring. A connecting rod is provided on the outer side of the ring plate, which passes through the limiter and is fixed on the inner side of the gear ring, and the ring plate and the gear ring are located on the same central axis and move synchronously. A ball is provided on the outer side of the limiter, which moves with the bearing on the inner side of the gear ring. The force-bearing structure is provided with three annular arrays distributed on the inner side of the ring plate, and the force-bearing structure is connected to the support rod. The support rod is provided with three annular arrays distributed on the inner side of the limiter. When the limiter rotates, under the fixation of the ring plate, the limiter drives the force-bearing structure to rotate through the support rod, and makes the force-bearing structure wrap around the outer side of the steel bar passing through the middle. The outer side of the gear ring is threadedly matched with the motor for transmission, and a gear is provided between the gear ring and the motor to extend the distance of the threaded transmission, which has the effect of preventing the motor from being too close to the clamp.

[0008] A better technical solution: the force-bearing structure is provided with a bending plate, an elastic plate, and a movable rod. The right side of the bending plate is arranged at the right end of the elastic plate, the movable rod is arranged on the outside of the elastic plate, and the elastic plate is fixed to the inner side of the ring plate through the hinge of the movable rod. When the bending plate is pulled by the support rod, the elastic plate is driven to press against the inner side of the ring plate, and the bending plate is bent in an arc shape to press against the outside of the steel bar. The bending plate is made of aluminum alloy and is divided into two arc states, with a better deformation effect.

[0009] A better technical solution: the limiter is provided with a bearing ring, a sleeve rod, and a movable plate. The sleeve rod is arranged on the outside of the bearing ring. One end of the movable plate is hollow, and the hollow shape is slidably matched with the sleeve rod, so that the movable plate drives the bearing ring to rotate through the sleeve rod, and drives the bearing ring to pull the support rod to rotate.

[0010] A preferred technical solution: A card slot is provided on the inner side of the gear ring, and the card slots are distributed in a ring array. When the card slot slides inwards, it engages with the movable plate, and when the movable plate slides outwards, it disengages from the card slot.

[0011] A better technical solution: the pedestal is provided with a transmitter, a translation structure, a hydraulic press, a platform body, and a hollow ring. The hydraulic press is arranged inside the platform body, and the translation structure is connected to the hydraulic press. The hollow ring is located at a corresponding position in the middle of the fixing mechanism, and the steel bar passes through the hollow ring. The transmitter is arranged at the lower end of the laser marker and is located on the surface of the platform body. The equidistantly arranged translation structures are controlled in parallel by several hydraulic presses. When the hydraulic press is controlled by the control display, the translation structure is pushed to resist the steel bar in the hollow circle. When the steel bar is driven to rotate, the translation structure is driven to rotate accordingly.

[0012] A better technical solution: the translation structure is provided with a sensor, a translation rod, a connecting plate, a rotating rod, a cylindrical block, a scanner, and a friction strip. The sensor is arranged on the outside of the translation rod, and the sensor measures the rotation circumference of the rotating rod. The friction strip ring array is distributed on the outside of the cylindrical block. The rotating rod passes through the middle of the cylindrical block and is limited to the outside of the scanner. The translation rod is provided with a spring rod connected to the connecting plate, and the outside of the scanner is arranged on the inside of the connecting plate. When the connecting plate is pushed by the hydraulic press, the translation rod is driven to move, and the friction strip on the outside of the cylindrical block is pressed against the outside of the steel bar.

[0013] A better technical solution: the scanner is provided with several equidistant arrays, the length of the scanner from the steel bar is a fixed length, and the length of the irradiation range of the several scanners in the platform is consistent with the length of the steel bar in the platform. When the size of the steel bar changes, the friction strip will be pushed against the outside of the steel bar.

[0014] A working method of an auxiliary device for measuring steel bar corrosion area: the friction strip is made of rubber material, when the steel bar rotates, the friction of the steel bar drives the friction strip to rotate, and causes the cylindrical block to rotate around a rotating rod, the sensor circuit is connected to the inside of a control display, the length of the cylindrical block driven to rotate by the steel bar is in a fixed ratio to the rotation length of the rotating rod, and after the sensor detects the rotation length of the rotating rod, the rotation circumference of the cylindrical block is calculated through the control display.

[0015] Among them, the working method for determining the steel bar corrosion area includes the following steps: S1: The steel bar is inserted into the clamp (32) from the outside of the fixing mechanism (3) and passes through the hollow ring (25) in the pedestal (2). At this time, the stopper (321) is manually rotated to fix the steel bar.

[0016] S2: Rotate the movable plate (3213) so that the three bent plates (3231) wrap around the steel bar under the elasticity of the elastic plate (3232), and make the movable plate (3213) engage and support in the clamping groove (3251), so that the steel bar is fixed in the middle of the clamp (32).

[0017] S3: Controlling the laser marker (5) to make the emitter (21) emit laser downward, thereby vertically marking the steel bars in the hollow ring (25).

[0018] S4: Controlling the hydraulic device (23) to push the connecting plate (223) to move, driving the cylindrical block (225) and the friction strip (227) to abut against the outer side of the steel bar, and limiting the distance between the scanner (226) and the steel bar.

[0019] S5: By controlling the motor (33) to rotate, the tooth block drives the tooth ring (325) in the clamp (32) to rotate, and the steel bar is rotated from the middle of the clamps (32) arranged at equal intervals.

[0020] S6: When the steel bar rotates, the scanner (226) scans the transverse area of ​​the steel bar passing through the hollow circle (25), and the scanner (226) limits the distance of the steel bar so that the image of the steel bar taken by the scanner (226) with time delay is exactly the transverse range of the steel bar in the hollow circle (25).

[0021] S7: The rotation length of the rotating rod (224) is sensed by the sensor (221), and the friction strip (227) is driven by the steel bar to rub and cause the cylindrical block (225) to rotate, and the rotating rod (224) and the cylindrical block (225) rotate synchronously. The circumference of the cylindrical block (225) following the rotation of the steel bar is reversely calculated in the control display (1), and the circumference is combined with the image taken by the scanner (226). The outer side of the steel bar is fully scanned and identified through the marking points, and the rust area on the surface of the steel bar is calculated.

[0022] Compared with the prior art, this technical solution has the following advantages: In the present invention, the bending plate connected to the support rod is pulled, so that the bending plate forms an arc state under the resistance of the elastic plate to contact the steel bar in the middle of the clamp, so that the three force-bearing structures form a wrapping effect on the outside of the steel bar. After the steel bar is wrapped tightly, the movable plate is pushed to slide into the slot to fix the limiter, thereby achieving the effect of fixing the wrapped steel bar and preventing the spiral ring on the outside of the steel bar from being fixed. The area is small, and the fixing area is increased to prevent the steel bar from easily rotating.

[0023] In the present invention, when the size of the steel bar changes, the connecting plate in the translation structure is pushed, driving the translation rod to move the rotating rod, and making the cylindrical block and the friction strip press against the outside of the steel bar in the hollow circle, thereby driving the scanner to maintain the same distance from the surface of the steel bar, so that when the size of the steel bar changes, the steel bar surface range photographed by the scanner is maintained, preventing image overlap caused by changes in the shooting range. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0025] Figure 1This is an overall diagram of the present invention.

[0026] Figure 2 A side view of the fixing mechanism.

[0027] Figure 3 A schematic plan view of the clamp.

[0028] Figure 4 It is a three-dimensional schematic diagram of the load-bearing structure.

[0029] Figure 5 It is a partially enlarged stereoscopic schematic diagram of the limiter.

[0030] Figure 6 A side view of the pedestal.

[0031] Figure 7 It is a three-dimensional schematic diagram of the translation structure.

[0032] In the figure: control display-1, pedestal-2, fixing mechanism-3, base-4, laser marker-5, shell-31, clamp-32, motor-33, processing panel-34, limiter-321, support rod-322, force structure-323, ring plate-324, gear ring-325, bending plate-3231, elastic plate-3232, movable rod-3233, bearing ring-3211, sleeve rod-3212, movable plate-3213, slot-3251, transmitter-21, translation structure-22, hydraulic press-23, platform-24, hollow ring-25, sensor-221, translation rod-222, connecting plate-223, rotating rod-224, cylindrical block-225, scanner-226, friction strip-227. DETAILED DESCRIPTION

[0033] like Figures 1 to 7 As shown, the present invention proposes a steel bar corrosion area determination auxiliary device and a working method thereof, comprising a control display 1, a pedestal 2, a fixing mechanism 3, a base 4, and a laser marker 5, wherein the laser marker 5 is arranged at the upper end of the pedestal 2, and the laser marker 5 is controlled by the control display 1 at the side of the fixing mechanism 3, the fixing mechanism 3 and the pedestal 2 are fixed on the surface of the base 4, and the steel bar passes through the fixing mechanism 3 from the outside and is inserted into the middle position of the pedestal 2; The fixing mechanism 3 is provided with a shell 31, a clamp 32, a motor 33, and a processing panel 34. The processing panel 34 and the motor 33 are fixed inside the shell 31, and a plurality of the motors 33 are connected in parallel by the processing panel 34, and the display 1 is controlled by the processing panel 34 line connection. The clamps 32 are arranged equidistantly in the shell 31 and are threadedly driven by the motor 33. The center of the clamp 32 corresponds to the steel bar passing through the fixing mechanism 3, and the steel bar is rotationally wrapped by the clamp 32 in the shell 31.

[0034] There are five clamps 32, one of which is used for calibration and four for testing. The fixing mechanism 3 fixes one end of the steel bar, and the other end of the steel bar is also fixed with a fixing mechanism 3, but it is different from the fixing mechanism 3. Figure 1 Compared with the fixing mechanism 3 described in the figure, the fixing mechanism 3 at the other end only includes a clamp 32 and a housing 31. Figure 1 The fixing mechanism 3 is controlled by the control display 1 to control the processing panel 34 , and the motor 33 drives the clamp 32 to rotate, so that the steel bar passes through the inside of the clamp 32 and rotates in the pedestal 2 .

[0035] The clamp 32 is provided with a stopper 321, a support rod 322, a force-bearing structure 323, a ring plate 324, and a gear ring 325. A connecting rod is provided on the outer side of the ring plate 324 and passes through the stopper 321 to be fixed on the inner side of the gear ring 325. The ring plate 324 and the gear ring 325 are located on the same central axis and move synchronously. A ball is provided on the outer side of the stopper 321 and moves with the bearing on the inner side of the gear ring 325. The force-bearing structure 323 is provided with three ring arrays distributed on the inner side of the ring plate 324, and the force-bearing structure 323 and the support rod 322 are connected to each other. The support rods 322 are connected in three forms and are distributed in a circular array on the inner side of the limiter 321. When the limiter 321 rotates, the limiter 321 drives the force-bearing structure 323 to rotate through the support rods 322 under the fixation of the ring plate 324, and makes the force-bearing structure 323 wrap around the outer side of the steel bar passing through the middle. The outer side of the gear ring 325 is threadedly matched with the motor 33 for transmission, and a gear is provided between the gear ring 325 and the motor 33 to extend the distance of the threaded transmission, which has the effect of preventing the motor 33 from being too close to the clamp 32.

[0036] Among them, the force-bearing structure 323 is provided with a bending plate 3231, an elastic plate 3232, and a movable rod 3233. The right side of the bending plate 3231 is arranged at the right end of the elastic plate 3232, and the movable rod 3233 is arranged on the outside of the elastic plate 3232, and the elastic plate 3232 is hingedly fixed to the inner side of the ring plate 324 by the movable rod 3233. When the bending plate 3231 is pulled by the support rod 322, the elastic plate 3232 is driven to press against the inner side of the ring plate 324, and the bending plate 3231 is bent in an arc shape to press against the outside of the steel bar. The bending plate 3231 is made of aluminum alloy and is divided into two arc states, with a good deformation effect.

[0037] Among them, the limiter 321 is provided with a bearing ring 3211, a sleeve rod 3212, and a movable plate 3213. The sleeve rod 3212 is arranged on the outside of the bearing ring 3211. One end of the movable plate 3213 is hollow, and the hollow shape is slidably matched with the sleeve rod 3212, so that the movable plate 3213 drives the bearing ring 3211 to rotate through the sleeve rod 3212, and drives the bearing ring 3211 to pull the support rod 322 to rotate.

[0038] In addition, the inner side of the tooth ring 325 is provided with a slot 3251 , which is distributed in a ring array. When the slot 3251 slides inward, it engages with the movable plate 3213 , and when the movable plate 3213 slides outward, it is disengaged from the slot 3251 .

[0039] After the steel bar passes through the clamp 32 in the present invention, the movable plate 3213 is pulled to slide out of the sleeve rod 3212, and then the movable plate 3213 is manually rotated, driving the bearing ring 3211 to rotate and pull the support rod 322, and under the fixation of the ring plate 324, the bent plate 3231 connected to the support rod 322 is pulled, so that the bent plate 3231 forms an arc state under the resistance of the elastic plate 3232 to contact the steel bar in the middle of the clamp 32, so that the three force-bearing structures 323 form a wrapping effect on the outside of the steel bar, and after the steel bar is wrapped tightly, the movable plate 3213 is pushed into the card slot 3251 to fix the limiter 321, so as to achieve the effect of fixing the wrapped steel bar, prevent the spiral ring on the outside of the steel bar from being fixed. The area is small, the fixed area is increased to prevent the steel bar from easily rotating, and after the wrapping is completed, the gear ring 325 and the motor 33 are rotated through gears to drive the steel bar fixed by the clamp 32 to rotate for shooting.

[0040] Among them, the pedestal 2 is provided with a transmitter 21, a translation structure 22, a hydraulic press 23, a platform 24, and a hollow ring 25. The hydraulic press 23 is arranged inside the platform 24, and the translation structure 22 is connected to the hydraulic press 23. The hollow ring 25 is located at a corresponding position in the middle of the fixing mechanism 3, and the steel bar passes through the hollow ring 25. The transmitter 21 is arranged at the lower end of the laser marker 5 and is located on the surface of the platform 24. The equidistantly arranged translation structures 22 are controlled in parallel by several hydraulic presses 23. When the hydraulic press 23 is controlled by the control display 1, the translation structure 22 is pushed to counteract the steel bar in the hollow ring 25. When the steel bar is driven to rotate, the translation structure 22 is driven to rotate.

[0041] Among them, the translation structure 22 is provided with a sensor 221, a translation rod 222, a connecting plate 223, a rotating rod 224, a cylindrical block 225, a scanner 226, and a friction strip 227. The sensor 221 is arranged on the outside of the translation rod 222, and the sensor 221 measures the rotation circumference of the rotating rod 224. The friction strips 227 are distributed in a ring array on the outside of the cylindrical block 225. The rotating rod 224 passes through the middle of the cylindrical block 225 and is limited on the outside of the scanner 226. The translation rod 222 is provided with a spring rod connected to the connecting plate 223, and the outside of the scanner 226 is arranged on the inside of the connecting plate 223. When the connecting plate 223 is pushed by the hydraulic press 23, the translation rod 222 is driven to move, and the friction strip 227 on the outside of the cylindrical block 225 is pressed against the outside of the steel bar.

[0042] Among them, the scanner 226 is provided with several equidistant array distributions, the length of the scanner 226 from the steel bar is a fixed length, and the length of the irradiation range of several scanners 226 in the platform 24 is consistent with the length of the steel bar in the platform 24. When the size of the steel bar changes, the friction strip 227 will be pushed against the outside of the steel bar.

[0043] A working method of an auxiliary device for determining the area of ​​steel bar corrosion: Among them, the friction strip 227 is made of rubber. When the steel bar rotates, the friction of the steel bar drives the friction strip 227 to rotate, and causes the cylindrical block 225 to rotate around the rotating rod 224. The sensor 221 line is connected to the inside of the control display 1. The length of the cylindrical block 225 driven by the steel bar to rotate is in a fixed ratio with the rotation length of the rotating rod 224. After the sensor 221 detects the rotation length of the rotating rod 224, the rotation circumference of the cylindrical block 225 is calculated by the control display 1.

[0044] Among them, the working method for determining the steel bar corrosion area includes the following steps: S1: The steel bar is inserted into the clamp (32) from the outside of the fixing mechanism (3) and passes through the hollow ring (25) in the pedestal (2). At this time, the stopper (321) is manually rotated to fix the steel bar.

[0045] S2: Rotate the movable plate (3213) so that the three bent plates (3231) wrap around the steel bar under the elasticity of the elastic plate (3232), and make the movable plate (3213) engage and support in the clamping groove (3251), so that the steel bar is fixed in the middle of the clamp (32).

[0046] S3: Controlling the laser marker (5) to make the emitter (21) emit laser downward, thereby vertically marking the steel bars in the hollow ring (25).

[0047] S4: Controlling the hydraulic device (23) to push the connecting plate (223) to move, driving the cylindrical block (225) and the friction strip (227) to abut against the outer side of the steel bar, and limiting the distance between the scanner (226) and the steel bar.

[0048] S5: By controlling the motor (33) to rotate, the tooth block drives the tooth ring (325) in the clamp (32) to rotate, and the steel bar is rotated from the middle of the clamps (32) arranged at equal intervals.

[0049] S6: When the steel bar rotates, the scanner (226) scans the transverse area of ​​the steel bar passing through the hollow circle (25), and the scanner (226) limits the distance of the steel bar so that the image of the steel bar taken by the scanner (226) with time delay is exactly the transverse range of the steel bar in the hollow circle (25).

[0050] S7: The rotation length of the rotating rod (224) is sensed by the sensor (221), and the friction strip (227) is driven by the steel bar to rub and cause the cylindrical block (225) to rotate, and the rotating rod (224) and the cylindrical block (225) rotate synchronously. The circumference of the cylindrical block (225) following the rotation of the steel bar is reversely calculated in the control display (1), and the circumference is combined with the image taken by the scanner (226). The outer side of the steel bar is fully scanned and identified through the marking points, and the rust area on the surface of the steel bar is calculated.

[0051] In the present invention, before the steel bar rotates, the laser marker 5 is controlled by the control display 1 to emit a laser downward from the emitter 21 in the pedestal 2, and the steel bar passing through the hollow circle 25 is laser-marked, and the hydraulic press 23 is controlled to extend and retract, so that the connecting plate 223 in the translation structure 22 is pushed, driving the translation rod 222 to move the rotating rod 224, and making the cylindrical block 225 and the friction strip 227 abut against the outer side of the steel bar in the hollow circle 25. When the steel bar rotates, the cylindrical block 225 and the rotating rod 224 are driven to rotate by the friction strip 227. Under the detection of the rotation length of the rotating rod 224 by the sensor 221, the circumference of the cylindrical block 225 rotated by the steel bar is reversely calculated in the control display 1, thereby calculating the length of the rotation measurement. In the present invention, when the size of the steel bar changes, the cylindrical block 225 and the friction strip 227 will abut against the outer side of the steel bar, thereby driving the scanner 226 to maintain the same distance from the surface of the steel bar, so that the steel bar surface range photographed by the scanner 226 is maintained when the size of the steel bar changes, and image overlap caused by changes in the shooting range is prevented.

[0052] The above description is only a preferred embodiment of the present invention, and therefore cannot be used to limit the scope of the present invention. That is, equivalent changes and modifications made according to the patent scope of the present invention and the contents of the specification should still fall within the scope of the present invention.

Claims

1. A steel bar corrosion area determination auxiliary device, characterized in that: The invention comprises a control display (1), a pedestal (2), a fixing mechanism (3), a base (4), and a laser marker (5), wherein the laser marker (5) is arranged at the upper end of the pedestal (2), and the laser marker (5) is controlled by the control display (1) at the side of the fixing mechanism (3), the fixing mechanism (3) and the pedestal (2) are fixed on the surface of the base (4), and the steel bar passes through the fixing mechanism (3) from the outside and is inserted into the middle position of the pedestal (2); The fixing mechanism (3) is provided with a shell (31), a clamp (32), a motor (33), and a processing panel (34); the processing panel (34) and the motor (33) are fixed inside the shell (31); and a plurality of the motors (33) are connected in parallel by the processing panel (34); and are controlled by a control display (1) through a line connection of the processing panel (34); the clamps (32) are arranged equidistantly in the shell (31) and are threadedly coupled by the motor (33); and the center of the clamps (32) corresponds to a steel bar passing through the fixing mechanism (3); and the steel bar is rotationally wrapped by the clamps (32) in the shell (31).

2. The steel bar corrosion area determination auxiliary device according to claim 1, characterized in that: The clamp (32) is provided with a stopper (321), a support rod (322), a force-bearing structure (323), a ring plate (324), and a gear ring (325); a connecting rod is provided on the outer side of the ring plate (324) and passes through the stopper (321) and is fixed on the inner side of the gear ring (325); the ring plate (324) and the gear ring (325) are located on the same central axis and move synchronously; a ball is provided on the outer side of the stopper (321) and moves with a bearing on the inner side of the gear ring (325); the force-bearing structure ( The force-bearing structure (323) is provided with three rings and distributed in an annular array on the inner side of the ring plate (324), and the force-bearing structure (323) is connected to the support rod (322). The support rod (322) is provided with three rings and distributed in an annular array on the inner side of the stopper (321). When the stopper (321) rotates, the stopper (321) drives the force-bearing structure (323) to rotate through the support rod (322) under the fixation of the ring plate (324), and the force-bearing structure (323) is wound around the outer side of the steel bar passing through the middle.

3. The steel bar corrosion area determination auxiliary device according to claim 2, characterized in that: The force-bearing structure (323) is provided with a bending plate (3231), an elastic plate (3232), and a movable rod (3233); the right side of the bending plate (3231) is arranged at the right end of the elastic plate (3232); the movable rod (3233) is arranged outside the elastic plate (3232); and the elastic plate (3232) is hingedly fixed to the inner side of the ring plate (324) through the movable rod (3233); when the bending plate (3231) is pulled by the support rod (322), the elastic plate (3232) is driven to abut against the inner side of the ring plate (324), and the bending plate (3231) is bent in an arc shape to abut against the outer side of the steel bar.

4. The steel bar corrosion area determination auxiliary device according to claim 2, characterized in that: The stopper (321) is provided with a bearing ring (3211), a sleeve rod (3212), and a movable plate (3213); the sleeve rod (3212) is arranged outside the bearing ring (3211); one end of the movable plate (3213) is hollow, and the hollow shape is slidably matched with the sleeve rod (3212), so that the movable plate (3213) drives the bearing ring (3211) to rotate through the sleeve rod (3212), and drives the bearing ring (3211) to pull the support rod (322) to rotate.

5. The steel bar corrosion area determination auxiliary device according to claim 2, characterized in that: The inner side of the toothed ring (325) is provided with a clamping groove (3251), which is distributed in a ring array. When the clamping groove (3251) slides inwards, it is clamped with the movable plate (3213), and when the movable plate (3213) slides outwards, it is disengaged from the clamping groove (3251).

6. The steel bar corrosion area determination auxiliary device according to claim 1, characterized in that: The pedestal (2) is provided with a transmitter (21), a translation structure (22), a hydraulic device (23), a platform (24), and a hollow ring (25). The hydraulic device (23) is arranged inside the platform (24), and the translation structure (22) is connected to the hydraulic device (23). The hollow ring (25) is located at a corresponding position in the middle of the fixing mechanism (3), and a steel bar passes through the hollow ring (25). The transmitter (21) is arranged at the lower end of the laser marker (5) and is located on the surface of the platform (24). The translation structures (22) arranged at equal intervals are controlled in parallel by a plurality of hydraulic devices (23). When the hydraulic device (23) is controlled by the control display (1), the translation structure (22) is pushed to counteract the steel bar in the hollow ring (25). When the steel bar is driven to rotate, the translation structure (22) is driven to rotate accordingly.

7. The steel bar corrosion area determination auxiliary device according to claim 6, characterized in that: The translation structure (22) is provided with a sensor (221), a translation rod (222), a connecting plate (223), a rotating rod (224), a cylindrical block (225), a scanner (226), and a friction strip (227); the sensor (221) is arranged on the outside of the translation rod (222), and the sensor (221) measures the rotation circumference of the rotating rod (224); the friction strips (227) are distributed in a ring array on the outside of the cylindrical block (225); the rotating rod (224) passes through the middle of the cylindrical block (225) and is limited on the outside of the scanner (226); the translation rod (222) is provided with a spring rod connected to the connecting plate (223), and the outside of the scanner (226) is arranged on the inside of the connecting plate (223); when the connecting plate (223) is pushed by the hydraulic press (23), the translation rod (222) is driven to move, and the friction strip (227) on the outside of the cylindrical block (225) is pressed against the outside of the steel bar.

8. The steel bar corrosion area determination auxiliary device according to claim 7, characterized in that: The scanners (226) are arranged in a plurality of equidistant arrays, the distance between the scanners (226) and the steel bars is a fixed length, and the length of the irradiation range of the plurality of scanners (226) in the platform (24) is consistent with the length of the steel bars in the platform (24).

9. A working method for measuring the steel bar corrosion area according to any one of claims 1 to 8, comprising: the friction strip (227) is made of rubber material, when the steel bar rotates, the friction of the steel bar drives the friction strip (227) to rotate, and causes the cylindrical block (225) to rotate around the rotating rod (224), the sensor (221) is connected to the inside of the control display (1), and the length of the cylindrical block (225) driven by the steel bar to rotate is a fixed ratio to the rotation length of the rotating rod (224); in, The working method for determining the steel bar corrosion area includes the following steps: S1: The steel bar is inserted into the clamp (32) from the outside of the fixing mechanism (3) and passes through the hollow ring (25) in the pedestal (2). At this time, the stopper (321) is manually rotated to fix the steel bar; S2: rotating the movable plate (3213) so that the three bent plates (3231) wrap around the steel bar under the elasticity of the elastic plate (3232), and the movable plate (3213) is engaged and supported in the clamping groove (3251), so that the steel bar is fixed in the middle of the clamp (32); S3: controlling the laser marker (5) to cause the emitter (21) to emit laser downward, thereby vertically marking the steel bars in the hollow ring (25); S4: controlling the hydraulic device (23) to push the connecting plate (223) to move, driving the cylindrical block (225) and the friction strip (227) to abut against the outer side of the steel bar, and limiting the distance between the scanner (226) and the steel bar; S5: by controlling the motor (33) to rotate, the tooth block drives the tooth ring (325) in the clamp (32) to rotate, and the steel bar is rotated from the middle of the clamps (32) arranged at equal distances; S6: When the steel bar rotates, the scanner (226) scans the transverse area of ​​the steel bar passing through the hollow circle (25), and the scanner (226) limits the distance of the steel bar so that the image of the steel bar taken by the scanner (226) with time delay is exactly the transverse range of the steel bar in the hollow circle (25); S7: The rotation length of the rotating rod (224) is sensed by the sensor (221), and the friction strip (227) is driven by the steel bar to rub and cause the cylindrical block (225) to rotate, and the rotating rod (224) and the cylindrical block (225) rotate synchronously. The circumference of the cylindrical block (225) following the rotation of the steel bar is reversely calculated in the control display (1), and the circumference is combined with the image taken by the scanner (226). The outer side of the steel bar is fully scanned and identified through the marking points, and the rust area on the surface of the steel bar is calculated.

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