Tool for detecting diameter of reinforcing steel bar by current method

Abstract

The utility model relates to a tool for detecting the diameter of a reinforcing steel bar by a current method, which belongs to the technical field of building detection and identification and comprises a supporting bottom plate, a plurality of universal wheels and a probe, the universal wheels are fixedly mounted on one side, close to the ground, of the supporting bottom plate and are uniformly distributed, and the probe is arranged on the supporting bottom plate. An adjustable mechanism is installed on the supporting bottom plate, and the two probes are installed on one side of the adjustable mechanism. According to the tool for detecting the diameter of the reinforcing steel bar through the current method, two small holes in the surface of a component are drilled, the diameter of the internal reinforcing steel bar is accurately measured on the premise that the overall structure is not damaged, engineering delay and cost increase caused by detection are greatly reduced, and meanwhile the detection accuracy is improved. And the unique probe can be adaptively adjusted according to the positions of the two small holes, so that the probe can be accurately contacted with the reinforcing steel bar, and the accuracy and the reliability of a detection result are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of building detection and identification, in particular to a tool for detecting the diameter of a steel bar using an electric current method. Background Art

[0002] In the maintenance and appraisal of modern building structures, accurate detection of the steel bar configuration of key components such as concrete beams and columns is a vital task. This work is not only directly related to the safety and durability of the building, but also a key link to ensure that the building quality meets the specifications and standards. However, in actual operation, this task faces many challenges.

[0003] Traditional detection methods mainly include the use of rebar detectors and damaged excavation detection methods. The rebar detector is a non-destructive detection tool that detects the position of rebars by emitting electromagnetic waves or sound waves, thereby obtaining information on the distribution of rebars without destroying the integrity of the structure. This method theoretically provides the possibility for non-destructive testing, but in practical applications, its limitations are also very obvious, especially when faced with a thick plaster layer. The detection accuracy of the detector will drop significantly. A thick plaster layer will not only affect the propagation of electromagnetic waves or sound waves, resulting in inaccurate detection results, but will also increase the difficulty of detection, requiring staff to devote more energy to dealing with these interference factors.

[0004] On the other hand, although the damaged excavation detection method can directly observe the diameter and distribution of steel bars, this method requires the destruction of part of the building structure, which is not only labor-intensive, but also produces a large amount of dust and noise pollution, affecting the surrounding environment and personnel health. In addition, the excavation work may also cause unforeseen damage to the structure itself, adding additional safety risks. For example, the excavation process may accidentally damage the steel bars or cause cracks in the concrete structure. These damages will not only affect the structural integrity of the building, but may also shorten the service life of the building. Therefore, a tool for detecting the diameter of steel bars using the current method is needed to solve the above problems. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the utility model provides a tool for detecting the diameter of steel bars by the current method, which has the advantages of being able to perform automated non-destructive high-precision detection, reduce project delays, and improve detection efficiency and safety. It solves the problems of low detection accuracy, large workload, pollution, high safety risks and complex detection process of existing steel bar detection devices.

[0006] In summary, the utility model provides the following technical solutions: a tool for detecting the diameter of a steel bar by an electric current method, comprising a supporting base plate, a universal wheel and a probe, wherein the universal wheel is fixedly mounted on a side of the supporting base plate close to the ground, and the number of the universal wheels is multiple and evenly distributed, an adjustable mechanism is mounted on the supporting base plate, and two probes are mounted on one side of the adjustable mechanism;

[0007] The adjustable mechanism comprises two fixed plates which are respectively fixedly mounted on the side of the support base plate away from the ground by bolts and are mirror-symmetrical, a protective shell and a lifting drive assembly installed in the protective shell are fixedly mounted by bolts on the opposite sides of the two fixed plates, a moving plate is connected to one side of the lifting drive assembly, a moving adjustment box and a horizontal driving assembly installed in the moving adjustment box are fixedly connected between the opposite sides of the two moving plates, a hollow rectangular frame is fixedly mounted on the side of the moving adjustment box away from the support base plate, a hinged pushing assembly located in the moving adjustment box is connected to the outer side of the horizontal driving assembly, and a parallel moving assembly located in the hollow rectangular frame is connected to the hinged pushing assembly;

[0008] One side of the parallel moving component is connected with two probes in mirror symmetry.

[0009] Furthermore, the lifting drive assembly includes a mounting plate, a servo motor, a rotating rod and a spur gear; one side of the mounting plate is fixedly mounted on one side of the protective housing, one side of the servo motor is fixedly mounted on one side of the mounting plate, one end of the rotating rod passes through the protective housing and is fixedly connected to the output shaft of the servo motor, and the other end opposite is rotatably connected to the inner side wall of the protective housing through a bearing, and the inner side of the spur gear is fixedly connected to the outer side of the rotating rod;

[0010] A meshing opening for the spur gear to mesh with is provided on one side of the movable plate close to the protective shell, and the meshing opening is multiple and arranged at equal distances.

[0011] By adopting the above technical solution, the movable plate can be stably driven to move inside the fixed plate under the cooperation of the mounting plate, the servo motor, the rotating rod and the spur gear.

[0012] Furthermore, a through hole for the spur gear to pass through is formed on the inner side wall of the fixing plate.

[0013] By adopting the above technical solution, it is convenient for the spur gear to drive the moving plate to move, thereby providing space for the spur gear to move.

[0014] Furthermore, the horizontal drive assembly includes a threaded rod and a turning handle; one end of the threaded rod passes through the movable adjustment box and is fixedly connected to the turning handle, and the other end passes through the hinged pushing assembly and extends to the inner wall of the movable adjustment box and is rotatably connected to the movable adjustment box through a bearing, and the outer side of the threaded rod is rotatably connected to the inside of the movable adjustment box through a bearing.

[0015] By adopting the above technical solution, the articulated pushing assembly can be stably driven to move under the cooperation of the threaded rod and the rotating handle.

[0016] Furthermore, the articulated pushing assembly includes a threaded sleeve, an articulated seat and an articulated rod; the inner side of the threaded sleeve is threadedly connected to the outer side of the threaded rod, the opposite sides of the two articulated seats are respectively fixedly connected to the outer sides of the threaded sleeve, and the two articulated seats are distributed in a mirror-symmetrical manner, one end of the articulated rod is articulated to the inner side of the articulated seat through a pin shaft, and the other opposite end is connected to one side of the parallel moving assembly.

[0017] By adopting the above technical solution, the parallel movement assembly can achieve horizontal movement under the cooperation of the threaded sleeve, the hinge seat and the hinge rod, so as to adjust the distance between the two probes to adapt to drilling small holes in various situations.

[0018] Furthermore, a movable hole for the hinge rod to slide in contact with is provided on a side of the movable adjustment box away from the supporting base plate.

[0019] The above technical solution is adopted to further improve the stability of the movement of the hinged rod.

[0020] Furthermore, the parallel movement assembly includes a sliding block and a sliding rod; both ends of the sliding rod are fixedly mounted on the inner wall of the hollow rectangular frame by bolts respectively, the inner side of the sliding block is slidably connected to the outer side of the sliding rod and slides in close proximity, the outer side of the sliding block is slidably connected to the inner side of the hollow rectangular frame and slides in close proximity, and the end of the hinged rod away from the threaded sleeve is hinged to one side of the sliding block through a pin shaft.

[0021] By adopting the above technical solution, the two sliding blocks can be stably driven to move at a uniform speed in relative or opposite directions under the cooperation of the sliding block and the sliding rod, so that the two probes can be adjusted according to actual conditions and needs.

[0022] Compared with the prior art, the utility model provides a tool for detecting the diameter of steel bars by the current method, which has the following beneficial effects:

[0023] This tool for detecting the diameter of steel bars by the current method uses the universal wheel, adjustable mechanism and probe on the supporting base plate to cooperate with each other. The tool drills two small holes on the surface of the component to achieve accurate measurement of the internal steel bar diameter without destroying the overall structure, greatly reducing project delays and cost increases caused by detection. At the same time, its unique probe can be adaptively adjusted according to the position of the two small holes to ensure that the probe can accurately contact the steel bars, thereby ensuring the accuracy and reliability of the detection results, making it fully automated and eliminating the need for complex manual docking operations, greatly improving the efficiency and safety of the detection process. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of the utility model;

[0025] Figure 2 yes Figure 1 A partial enlarged schematic diagram of the middle A part;

[0026] Figure 3 yes Figure 1 The left-view overall schematic diagram of

[0027] Figure 4 yes Figure 1 A three-dimensional schematic diagram of the middle hinged rod connection structure;

[0028] Figure 5 It is a circuit diagram of the utility model structure.

[0029] Description of reference numerals:

[0030] 1. Support base plate; 2. Universal wheel; 300. Adjustable mechanism; 301. Fixed plate; 302. Protective shell; 3031. Mounting plate; 3032. Servo motor; 3033. Rotating rod; 3034. Spur gear; 304. Through hole; 3051. Moving plate; 3052. Meshing mouth; 306. Moving adjustment box; 3071. Threaded rod; 3072. Turning handle; 308. Hollow rectangular frame; 3091. Threaded sleeve; 3092. Articulated seat; 3093. Articulated rod; 310. Moving hole; 3111. Sliding block; 3112. Sliding rod; 4. Probe. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0032] See also Figure 1-5 The utility model provides a technical solution: a tool for detecting the diameter of a steel bar by an electric current method, comprising a supporting base plate 1, a universal wheel 2 and a probe 4, wherein the universal wheel 2 is fixedly mounted on a side of the supporting base plate 1 close to the ground, and the number of the universal wheels 2 is multiple and evenly distributed, an adjustable mechanism 300 is mounted on the supporting base plate 1, and two probes 4 are mounted on one side of the adjustable mechanism 300;

[0033] Through the mutual cooperation between the universal wheel 2, the adjustable mechanism 300 and the probe 4 on the supporting base plate 1, the tool realizes the accurate measurement of the internal steel bar diameter without destroying the overall structure by drilling two small holes on the surface of the component, which greatly reduces the project delays and cost increases caused by the detection. At the same time, its unique probe 4 can be adaptively adjusted according to the positions of the two small holes to ensure that the probe 4 can accurately contact the steel bar, thereby ensuring the accuracy and reliability of the detection results, making it fully automated and eliminating the need for manual complex docking operations, greatly improving the efficiency and safety of the detection process.

[0034] In this embodiment, the adjustable mechanism 300 is a structure for accurately measuring the diameter of the internal steel bars without damaging the overall structure.

[0035] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the adjustable mechanism 300 includes two fixed plates 301 which are respectively fixedly installed on the side of the support base plate 1 away from the ground by bolts and are mirror-symmetrical, and the opposite sides of the two fixed plates 301 are fixedly installed with a protective shell 302 and a lifting drive component installed in the protective shell 302 by bolts, and one side of the lifting drive component is connected to a moving plate 3051, and a moving adjustment box 306 and a horizontal driving component installed in the moving adjustment box 306 are fixedly connected between the opposite sides of the two moving plates 3051, and a hollow rectangular frame 308 is fixedly installed on the side of the moving adjustment box 306 away from the support base plate 1, and the outer side of the horizontal driving component is connected to a hinged pushing component located in the moving adjustment box 306, and the hinged pushing component is connected to a parallel moving component located in the hollow rectangular frame 308;

[0036] Two probes 4 in mirror symmetry are connected to one side of the parallel movement component.

[0037] It should be noted that the lifting drive assembly includes a mounting plate 3031, a servo motor 3032, a rotating rod 3033 and a spur gear 3034; one side of the mounting plate 3031 is fixedly mounted on one side of the protective housing 302, one side of the servo motor 3032 is fixedly mounted on one side of the mounting plate 3031, one end of the rotating rod 3033 penetrates the protective housing 302 and is fixedly connected to the output shaft of the servo motor 3032, and the other end opposite is rotatably connected to the inner side wall of the protective housing 302 through a bearing, and the inner side of the spur gear 3034 is fixedly connected to the outer side of the rotating rod 3033;

[0038] A meshing opening 3052 for meshing with the spur gear 3034 is provided on one side of the movable plate 3051 close to the protective housing 302 . There are multiple meshing openings 3052 arranged equidistantly so as to stably drive the movable plate 3051 to move within the fixed plate 301 .

[0039] It can be understood that the inner wall of the fixed plate 301 is provided with a through hole 304 for the spur gear 3034 to pass through, so as to facilitate the spur gear 3034 to drive the movable plate 3051 to move and provide space for the spur gear 3034 to move.

[0040] In addition, the horizontal drive assembly includes a threaded rod 3071 and a turning handle 3072; one end of the threaded rod 3071 passes through the movable adjustment box 306 and is fixedly connected to the turning handle 3072, and the other end passes through the hinged pushing assembly and extends to the inner wall of the movable adjustment box 306 and is rotatably connected to the movable adjustment box 306 through a bearing. The outer side of the threaded rod 3071 is rotatably connected to the inside of the movable adjustment box 306 through a bearing, so as to be able to stably drive the hinged pushing assembly to move.

[0041] In this embodiment, the articulated pushing assembly includes a threaded sleeve 3091, an articulated seat 3092 and an articulated rod 3093; the inner side of the threaded sleeve 3091 is threadedly connected to the outer side of the threaded rod 3071, and the opposite sides of the two articulated seats 3092 are respectively fixedly connected to the outer side of the threaded sleeve 3091, and the two articulated seats 3092 are distributed in a mirror-symmetrical manner. One end of the articulated rod 3093 is articulated to the inner side of the articulated seat 3092 through a pin, and the other opposite end is connected to one side of the parallel moving assembly, so that the rotation of the threaded rod 3071 can be converted into the linear motion of the threaded sleeve 3091. Next, the articulated seat 3092 is fixed to the outer side of the threaded sleeve 3091, and the two articulated seats are fixedly connected to the outer side of the threaded sleeve 3091. 3092 are arranged relatively to each other, and they are distributed in mirror symmetry, which ensures that they can maintain balance when subjected to force, and also enables the two articulated seats 3092 to move at the same speed, thereby ensuring the accuracy of movement. Finally, the articulated rod 3093 can rotate under the drive of the articulated seat 3092, and the other end of the articulated rod 3093 is connected to the parallel movement component. Through the movement of the articulated seat 3092, the articulated rod 3093 can generate vertical movement, which in turn converts the other end into horizontal movement. This vertical to horizontal movement conversion enables the parallel movement component to achieve horizontal movement, thereby adjusting the distance between the two probes 4 to adapt to drilling small holes in various situations.

[0042] It should also be noted that a moving hole 310 for the hinge rod 3093 to slide on is provided on the side of the movable adjustment box 306 away from the supporting base plate 1, so as to further improve the stability of the movement of the hinge rod 3093.

[0043] It should be further explained that the parallel movement assembly includes a sliding block 3111 and a sliding rod 3112; the two ends of the sliding rod 3112 are respectively fixed on the inner wall of the hollow rectangular frame 308 by bolts, the inner side of the sliding block 3111 is slidably connected to the outer side of the sliding rod 3112 and slides in close proximity, the outer side of the sliding block 3111 and the inner side of the hollow rectangular frame 308 are slidably connected and slide in close proximity, and the end of the hinged rod 3093 away from the threaded sleeve 3091 is hinged to one side of the sliding block 3111 through a pin shaft, so as to be able to stably drive the two sliding blocks 3111 to move at a uniform speed in relative or opposite directions, so that the two probes 4 can be adjusted according to actual conditions and needs.

[0044] like Figure 5 As shown, using the relationship between resistance R and wire length L and cross-sectional area A (R=ρL / A), through tests on standard steel mesh, the functional relationship between current and steel bar diameter (steel grade) is derived;

[0045] This means that the larger the diameter of the steel bar, the smaller the resistance of the steel bar, and the greater the current passing through. Therefore, the relationship between the diameter of the steel bar and the current is: the larger the diameter of the steel bar, the greater the current;

[0046] This relationship is of great significance in practical engineering. For example, when designing concrete structures, engineers need to choose the appropriate steel bar diameter to ensure the safety and economy of the structure. Through experiments, such as placing steel bars on a standard steel mesh and applying a certain voltage, the resistance of steel bars with different diameters can be measured, and the current can be calculated. This test can help engineers evaluate the conductive properties of steel bars with different diameters and make reasonable decisions.

[0047] The working principle of the above embodiment is:

[0048] When it is necessary to calculate the diameter of the steel bar, first drill two small holes in the concrete component, then adjust according to the position of the small holes, start the servo motor 3032, and drive the rotating rod 3033 to rotate under the rotation support of the bearing to drive the spur gear 3034 to rotate, then drive the movable plate 3051 to move under the thrust of the engagement of the spur gear 3034 and the meshing mouth 3052, and at the same time drive the movable adjustment box 306 to rise and fall, and stop the servo motor 3032 after adjusting to the appropriate height, then hold the rotating handle 3072 and rotate it, and drive the threaded rod 3071 to rotate under the rotation support of the bearing, and make the threaded sleeve 3091 move on the outside of the threaded rod 3071 under the thrust of the inner thread rotation, and the rotation of the threaded rod 3071 can be converted into the linear motion of the threaded sleeve 3091, and then, the hinge seat 3092 is fixed on the outside of the threaded sleeve 3091, And the two articulated seats 3092 are arranged opposite to each other, and they are distributed in mirror symmetry, ensuring that they can maintain balance when subjected to force, and also enabling the two articulated seats 3092 to move at the same speed, thereby ensuring the accuracy of movement. Finally, the articulated rod 3093 can rotate under the drive of the articulated seat 3092, and the other end of the articulated rod 3093 is connected to the sliding block 3111. Through the movement of the articulated seat 3092, the articulated rod 3093 can generate vertical movement, which in turn converts the other end into horizontal movement. This vertical to horizontal movement conversion enables the sliding block 3111 to achieve stable horizontal movement on the outside of the sliding rod 3112, thereby adjusting the distance between the two probes 4 to adapt to the small holes drilled in various situations. Then, the supporting base plate 1 is pushed to insert the two probes 4 into the pre-drilled small holes to detect the diameter of the steel bars.

[0049] Compared with the prior art: the tool for detecting the diameter of steel bars by the current method, through the mutual cooperation between the universal wheel 2, the adjustable mechanism 300 and the probe 4 on the supporting base plate 1, the tool realizes the accurate measurement of the internal steel bar diameter without destroying the overall structure by drilling two small holes on the surface of the component, which greatly reduces the project delays and cost increases caused by the detection. At the same time, its unique probe 4 can be adaptively adjusted according to the positions of the two small holes to ensure that the probe 4 can accurately contact the steel bars, thereby ensuring the accuracy and reliability of the detection results, making it fully automated and eliminating the need for manual complex docking operations, greatly improving the efficiency and safety of the detection process, and solving the problems of low detection accuracy, large workload, pollution, high safety risks and complex detection process of existing steel bar detection devices.

[0050] The electrical components appearing in the text are all electrically connected to the main controller and the power supply. The main controller can be a conventional known device that controls a computer, etc., and the existing publicly available power connection technology and power supply are also common knowledge in the field, so this application will not go into details.

Claims

1. A tool for detecting the diameter of a steel bar using an electric current method, comprising a supporting base plate (1), a universal wheel (2) and a probe (4), wherein the universal wheel (2) is fixedly mounted on a side of the supporting base plate (1) close to the ground, and the universal wheels (2) are multiple and evenly distributed, and characterized in that: An adjustable mechanism (300) is installed on the supporting base plate (1), and the two probes (4) are installed on one side of the adjustable mechanism (300); The adjustable mechanism (300) comprises two fixed plates (301) respectively fixedly mounted on the side of the support base plate (1) away from the ground by bolts and in a mirror-symmetrical manner; a protective housing (302) and a lifting drive component installed in the protective housing (302) are fixedly mounted on opposite sides of the two fixed plates (301) by bolts; a moving plate (3051) is connected to one side of the lifting drive component; a moving adjustment box (306) and a horizontal driving component installed in the moving adjustment box (306) are fixedly connected between opposite sides of the two moving plates (3051); a hollow rectangular frame (308) is fixedly mounted on the side of the moving adjustment box (306) away from the support base plate (1); a hinged pushing component located in the moving adjustment box (306) is connected to the outer side of the horizontal driving component; and a parallel moving component located in the hollow rectangular frame (308) is connected to the hinged pushing component; Two probes (4) that are mirror-symmetrical are connected to one side of the parallel movement component.

2. The tool for detecting the diameter of a steel bar by the current method according to claim 1, characterized in that: The lifting drive assembly comprises a mounting plate (3031), a servo motor (3032), a rotating rod (3033) and a spur gear (3034); one side of the mounting plate (3031) is fixedly mounted on one side of the protective housing (302); one side of the servo motor (3032) is fixedly mounted on one side of the mounting plate (3031); one end of the rotating rod (3033) passes through the protective housing (302) and is fixedly connected to the output shaft of the servo motor (3032); the other end opposite thereto is rotatably connected to the inner side wall of the protective housing (302) via a bearing; the inner side of the spur gear (3034) is fixedly connected to the outer side of the rotating rod (3033); A meshing opening (3052) for the spur gear (3034) to mesh with is provided on one side of the movable plate (3051) close to the protective housing (302), and the meshing openings (3052) are multiple and arranged at equal distances.

3. The tool for detecting the diameter of a steel bar by the current method according to claim 2, characterized in that: A through hole (304) for the spur gear (3034) to pass through is provided on the inner side wall of the fixing plate (301).

4. The tool for detecting the diameter of a steel bar by the current method according to claim 1, characterized in that: The horizontal driving assembly comprises a threaded rod (3071) and a rotating handle (3072); one end of the threaded rod (3071) passes through the movable adjustment box (306) and is fixedly connected to the rotating handle (3072), and the other end of the threaded rod (3071) passes through the hinged pushing assembly and extends to the inner side wall of the movable adjustment box (306) and is rotatably connected to the movable adjustment box (306) via a bearing, and the outer side of the threaded rod (3071) is rotatably connected to the inside of the movable adjustment box (306) via a bearing.

5. The tool for detecting the diameter of a steel bar by the current method according to claim 4, characterized in that: The articulated pushing assembly comprises a threaded sleeve (3091), an articulated seat (3092) and an articulated rod (3093); the inner side of the threaded sleeve (3091) is threadedly connected to the outer side of the threaded rod (3071); opposite sides of the two articulated seats (3092) are respectively fixedly connected to the outer side of the threaded sleeve (3091), and the two articulated seats (3092) are distributed in a mirror-symmetrical manner; one end of the articulated rod (3093) is articulated to the inner side of the articulated seat (3092) through a pin shaft, and the other opposite end is connected to one side of the parallel moving assembly.

6. The tool for detecting the diameter of a steel bar by the current method according to claim 5, characterized in that: A movable hole (310) for the hinged rod (3093) to slide in contact with is provided on a side of the movable adjustment box (306) away from the supporting base plate (1).

7. The tool for detecting the diameter of a steel bar by the current method according to claim 5, characterized in that: The parallel movement assembly comprises a sliding block (3111) and a sliding rod (3112); both ends of the sliding rod (3112) are fixedly mounted on the inner wall of the hollow rectangular frame (308) by means of bolts, the inner side of the sliding block (3111) is slidably connected to the outer side of the sliding rod (3112) and slides in close proximity, the outer side of the sliding block (3111) is slidably connected to the inner side of the hollow rectangular frame (308) and slides in close proximity, and the end of the hinged rod (3093) away from the threaded sleeve (3091) is hinged to one side of the sliding block (3111) by means of a pin.

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