A crack detection device and method for round bars

Abstract

This invention relates to the field of round bar crack detection technology, and in particular to a round bar crack detection device and method. The device includes: legs, a detection platform, supports, a drive motor, a rotating assembly, a detection assembly, a control assembly, and wires. A detection platform is fixedly mounted on multiple legs. Two supports are symmetrically arranged on each detection platform. A drive motor is fixedly mounted on the outer side of any one of the supports. A rotating assembly is fixedly mounted on both supports. The detection assembly is movably mounted on the rotating assembly. A control assembly is fixedly mounted in the center of the detection platform. The control assembly is electrically connected to the detection assembly via wires. This invention eliminates the need for manual crack detection, saving detection time, reducing labor intensity, avoiding the influence of impurities on the outer surface of the round bar on the detection results, and greatly improving the accuracy and efficiency of crack detection.

Description

Technical Field

[0001] This invention relates to the field of round bar crack detection technology, and in particular to a round bar crack detection device and its detection method. Background Technology

[0002] In industrial production, round tubes and bars are widely used. During the cutting process, metal wires can easily remain on the surface of the cutting blade. As the tubes or bars are fed forward, these residual wires can scratch the surface, causing marks or cracks. These surface defects not only affect the appearance quality of the product but may also reduce its mechanical properties and service life, and even pose safety hazards.

[0003] Existing crack detection equipment typically requires workers to hold the probe and move it close to the outer surface of the bar when inspecting larger round bars. This process is cumbersome, time-consuming, and labor-intensive. Manual inspection is prone to missing some cracks, resulting in the bar not being fully inspected. In addition, various impurities may adhere to the outer surface of the bar, affecting the probe's detection and reducing the accuracy and efficiency of crack detection. Summary of the Invention

[0004] The technical objective of this invention is to address the shortcomings of existing crack detection equipment. The manual inspection process is cumbersome, time-consuming, and labor-intensive, often resulting in missed detections and incomplete inspection of round bars. Furthermore, various impurities adhering to the outer surface of the round bars can affect probe detection, reducing the accuracy and efficiency of crack detection. This invention achieves a crack detection device that eliminates the need for manual inspection, saving inspection time, reducing labor intensity, and avoiding the influence of impurities on the outer surface of the round bars on the detection results, thus significantly improving the accuracy and efficiency of crack detection.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0006] A round bar crack detection device includes: legs, a detection platform, supports, a drive motor, a rotating assembly, a detection assembly, a control assembly, and wires; a detection platform is fixedly mounted on multiple legs, and two supports are symmetrically arranged on each detection platform; a drive motor is fixedly mounted on the outer side of any one of the supports; a rotating assembly is fixedly mounted on the two supports, and the output end of the drive motor is connected to the rotating assembly; a detection assembly is movably mounted on the rotating assembly; and a control assembly is fixedly mounted in the middle of the detection platform, and the control assembly is electrically connected to the detection assembly via wires; the drive motor drives the rotating assembly to rotate the round bar, and simultaneously, the rotating assembly drives the detection assembly to move horizontally to clean the outer surface of the round bar and perform detection on the round bar.

[0007] As a preferred embodiment of the round bar crack detection device of the present invention, the rotating assembly includes a first fixed ring, a second fixed ring, a threaded rod, a rack, a toothed ring, a first clamping plate, a first clamping block, a second clamping plate, and a second clamping block.

[0008] The first fixing ring is fixedly installed on one support, and the second fixing ring is fixedly installed on another support. The two threaded rods are respectively rotatably installed inside the first fixing ring and the second fixing ring. The two ends of the rack are respectively fixedly installed inside the first fixing ring and the second fixing ring. The toothed ring is rotatably installed inside the first fixing ring. The first clamping plate is fixedly installed on the toothed ring. Multiple first clamping blocks are arranged in a circular array around the axis on the first clamping plate. A second clamping plate is rotatably installed on the second fixing ring. Multiple second clamping blocks are arranged in a circular array around the axis on the second clamping plate.

[0009] In a preferred embodiment of the round bar crack detection device of the present invention, a first gear is respectively provided on one end of the two threaded rods near the first fixed ring, and the two first gears respectively mesh with the gear ring.

[0010] In a preferred embodiment of the round bar crack detection device of the present invention, a rotating shaft is provided on the first fixed ring, and the rotating shaft is fixedly connected to the output end of the drive motor. A drive gear is provided on the rotating shaft, and the drive gear meshes with the gear ring.

[0011] In a preferred embodiment of the round bar crack detection device of the present invention, the first clamping plate is provided with a plurality of first sliding grooves in a ring around the axis, and a first compression spring is respectively provided in the plurality of first sliding grooves, and the plurality of first compression springs are respectively fixedly connected to the plurality of first clamping blocks, and the plurality of first clamping blocks are slidably located inside the plurality of first sliding grooves.

[0012] In a preferred embodiment of the round bar crack detection device of the present invention, the second clamping plate is provided with a plurality of second sliding grooves in a ring around the axis, and a second compression spring is respectively provided in the plurality of second sliding grooves. The plurality of second compression springs are respectively fixedly connected to the plurality of second clamping blocks, and the plurality of second clamping blocks are slidably located inside the plurality of second sliding grooves.

[0013] As a preferred embodiment of the round bar crack detection device of the present invention, the detection component includes a circular ring, a rotating ring, a brush, a moving block, a third compression spring, a first rotating tooth, a second rotating tooth, and a third rotating tooth;

[0014] A rotating ring is rotatably mounted on the circular ring. Multiple brushes are arranged in a ring around the axis of the circular ring. Multiple moving blocks are arranged in a ring array around the axis of the circular ring inside the circular ring. The multiple moving blocks are connected to the circular ring by multiple third compression springs. A rectangular cavity is formed on the circular ring. A first rotating tooth is arranged inside the rectangular cavity through a first fixed shaft. A first conical tooth is arranged on one side of the first rotating tooth. A second rotating tooth is arranged inside the rectangular cavity through a second fixed shaft. A third rotating tooth is arranged inside the rectangular cavity through a third fixed shaft. The second rotating tooth and the third rotating tooth mesh with each other. A second conical tooth is arranged at the top of the third fixed shaft. The second conical tooth meshes with the first conical tooth. The diameter of the second rotating tooth is larger than the diameter of the third rotating tooth.

[0015] In a preferred embodiment of the circular bar crack detection device of the present invention, the circular ring has two threaded holes respectively, and the two threaded holes respectively cooperate with the two threaded rods. The circular ring has a rectangular through hole, which communicates with the rectangular cavity and cooperates with the rack. The rack meshes with the first rotating tooth. The inner side of the rotating ring has a plurality of trapezoidal teeth arranged in a ring array around the axis, and the plurality of trapezoidal teeth mesh with the second rotating tooth.

[0016] In a preferred embodiment of the circular bar crack detection device of the present invention, two rolling balls are respectively provided on the moving block, a probe is provided between the two rolling balls, and the probe is electrically connected to the wire; a plurality of brushes are respectively provided with limit blocks, and the plurality of limit blocks are located inside the rotating ring; a fourth compression spring is provided on each of the plurality of limit blocks.

[0017] A method for detecting cracks in a round bar includes the following steps:

[0018] S1: First, place one end of the round bar on the first clamping plate and clamp and fix one end of the round bar by the first clamping block on the first clamping plate. Then, place the other end of the round bar on the second clamping plate and clamp and fix the other end of the round bar by the second clamping block on the second clamping plate.

[0019] S2: Start the drive motor, which drives the gear ring and the first clamping plate to rotate, and also drives the entire round bar and the second clamping plate to rotate;

[0020] S3: The toothed ring drives the threaded rod to rotate, the threaded rod drives the ring to move horizontally, and the moving ring drives the rotating ring to rotate through the rack;

[0021] S4: The rotating ring drives the brush to clean the round bar, and the rolling ball on the moving block rolls closely against the outer surface of the round bar.

[0022] S5: The probe is driven by a ring to perform spiral detection in conjunction with a rotating rod.

[0023] The beneficial effects of this invention are:

[0024] 1. This invention, by setting a rotating component and a detection component on the detection platform, allows the rotating component to drive the round bar to rotate through the cooperation of the rotating component and the horizontally moving detection component to clean the outer surface of the round bar while performing spiral detection. This realizes that the crack detection equipment does not require manual inspection, saves inspection time, reduces labor intensity, and avoids the influence of impurities on the outer surface of the round bar on the inspection results, greatly improving the accuracy and efficiency of crack detection.

[0025] 2. The present invention has a first clamping plate and a second clamping plate on the rotating component. The first clamping plate and the second clamping plate clamp and fix the round bar. The round bar is driven to rotate by the drive motor. In conjunction with the horizontal movement of the ring, the outer surface of the round bar is spirally inspected, which greatly improves the inspection area and inspection efficiency of the round bar.

[0026] 3. This invention incorporates a rotating ring on the detection component. The rotating ring and the rotating component work together to drive the rotating component to rotate the round bar, while the rotating component drives the rotating ring to rotate simultaneously. The brush on the rotating ring cleans the outer surface of the round bar, preventing impurities on the outer surface of the round bar from affecting the detection results and greatly improving the accuracy of crack detection. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall three-dimensional structure in an embodiment of this disclosure.

[0028] Figure 2 This is a three-dimensional structural diagram of the entire embodiment without a drive motor and detection components.

[0029] Figure 3 This is a three-dimensional structural diagram of the rotating component in an embodiment of this disclosure.

[0030] Figure 4 This is a three-dimensional structural schematic diagram of the rotating component from another perspective in an embodiment of this disclosure.

[0031] Figure 5 This is a three-dimensional structural diagram of the toothed ring, the first clamping disk, and the first clamping block in an embodiment of this disclosure.

[0032] Figure 6 This is a three-dimensional structural diagram of the second clamping disk and the second clamping block in an embodiment of this disclosure.

[0033] Figure 7This is a three-dimensional structural diagram of the detection component in an embodiment of this disclosure.

[0034] Figure 8 This is a three-dimensional structural diagram of the detection component from another perspective in an embodiment of this disclosure.

[0035] Figure 9 This is a three-dimensional structural diagram of the moving block inside the disk and the third compression spring in an embodiment of this disclosure.

[0036] Figure 10 This is a three-dimensional structural diagram of the internal structure of the rotating ring and the disk in the embodiments of this disclosure.

[0037] Figure 11 This is a cross-sectional view of the rotating ring in an embodiment of this disclosure.

[0038] Reference numerals: 1. Support leg; 2. Detection platform; 3. Support; 4. Drive motor; 5. Rotating assembly; 51. First fixed ring; 52. Second fixed ring; 53. Threaded rod; 531. First gear; 54. Rack; 55. Gear ring; 551. Rotating shaft; 552. Drive gear; 56. First clamping plate; 561. First slide groove; 562. First compression spring; 57. First clamping block; 58. Second clamping plate; 581. Second slide groove; 582. Second compression spring; 59. Second clamping block; 6. Detection assembly; 61. 611. Threaded hole; 612. Rectangular through hole; 62. Rotating ring; 621. Trapezoidal tooth; 63. Brush; 631. Limiting block; 632. Fourth compression spring; 64. Moving block; 641. Probe; 642. Rolling ball; 65. Third compression spring; 66. First rotating tooth; 661. First fixed shaft; 662. First bevel tooth; 67. Second rotating tooth; 671. Second fixed shaft; 68. Third rotating tooth; 681. Third fixed shaft; 682. Second bevel tooth; 69. Rectangular cavity; 7. Control component; 8. Wire. Detailed Implementation

[0039] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0040] like Figures 1 to 11As shown, a round bar crack detection device includes: support legs 1, detection platform 2, support base 3, drive motor 4, rotating assembly 5, detection assembly 6, control assembly 7, and wires 8; multiple support legs 1 are fixedly mounted with the detection platform 2, and two supports 3 are symmetrically arranged on each detection platform 2. A drive motor 4 is fixedly mounted on the outside of any one support base 3. A rotating assembly 5 is fixedly mounted on both supports 3, and the output end of the drive motor 4 is connected to the rotating assembly 5. The detection assembly 6 is movably mounted on the rotating assembly 5. A control assembly 7 is fixedly mounted in the middle of the detection platform 2 and is electrically connected to the detection assembly 6 through the wires 8; the drive motor 4 drives the rotating assembly 5 to rotate the round bar, and at the same time, the rotating assembly 5 drives the detection assembly 6 to move horizontally to clean the outer surface of the round bar and detect the round bar.

[0041] The support leg 1 is made of high-strength metal and has anti-slip rubber pads on the bottom to ensure the overall stability of the device and prevent positional displacement caused by vibration during the testing process. The top of the support leg 1 is rigidly connected to the testing platform 2 by bolts. The testing platform 2 is a rectangular steel plate structure. Two supports 3 are symmetrically arranged along the length of the testing platform 2 and are fixed to the testing platform 2 by welding. A drive motor 4 is fixed to the outside of any one of the supports 3 by a motor mounting bracket. The rotating component 5 can clamp and drive the round bar to rotate. The testing component 6 includes components such as a cleaning brush and a crack detection probe 641, which can move synchronously with the rotation component 5. The control component 7 is an integrated electrical control box. The control component 7 is electrically connected to the testing component 6 through wires 8 to achieve precise transmission of control signals.

[0042] The operator first installs both ends of the round bar to be tested onto the rotating component 5. The control component 7 sends a start signal to the drive motor 4 through the wire 8. The drive motor 4 runs and transmits power to the rotating component 5. The rotating component 5 converts the motor power into the rotational power of the first clamping plate 56, which drives the clamped round bar to rotate stably at a preset speed, providing dynamic detection conditions for subsequent surface cleaning and crack detection.

[0043] While the drive motor 4 drives the rotating component 5 to rotate the round bar, the rotating component 5, through its internal threaded rod 53, synchronously drives the detection component 6, which is movably connected to it, to move horizontally along the axis of the round bar. During the movement, the brush 63 at the front end of the detection component 6 first contacts the outer surface of the round bar. With the rotation of the round bar and the translation of the detection component 6, plus the rotation of the brush 63, the dust, oil, and other impurities on the outer surface of the round bar are cleaned in all directions to prevent impurities from obscuring cracks and affecting detection accuracy. After cleaning, the crack detection probe 641 on the detection component 6, through the ultrasonic probe 641, approaches the outer surface of the round bar and performs a spiral full-coverage detection of the outer surface of the round bar with the horizontal movement of the detection component 6 and the rotation of the round bar. The signal generated during the detection process is transmitted to the control component 7 in real time through the wire 8. The control component 7 analyzes and processes the signal. If a crack is detected, it immediately alarms through the display screen and records the crack location, size, and other information, realizing automated detection and data retention of cracks in the round bar.

[0044] like Figures 3 to 6 As shown, the rotating assembly 5 includes a first fixed ring 51, a second fixed ring 52, a threaded rod 53, a rack 54, a toothed ring 55, a first clamping plate 56, a first clamping block 57, a second clamping plate 58, and a second clamping block 59.

[0045] The first fixing ring 51 is fixedly installed on one support 3, the second fixing ring 52 is fixedly installed on another support 3, the two threaded rods 53 are respectively rotatably installed inside the first fixing ring 51 and the second fixing ring 52, the two ends of the rack 54 are respectively fixedly installed inside the first fixing ring 51 and the second fixing ring 52, the toothed ring 55 is rotatably installed inside the first fixing ring 51, the first clamping plate 56 is fixedly installed on the toothed ring 55, and multiple first clamping blocks 57 are arranged in a circular array around the axis on the first clamping plate 56, the second clamping plate 58 is rotatably installed on the second fixing ring 52, and multiple second clamping blocks 59 are arranged in a circular array around the axis on the second clamping plate 58.

[0046] The first fixing ring 51 is fixedly installed on the inner side of the support 3 near the drive motor 4 by bolts. Two symmetrical bearing mounting holes are pre-drilled on the inner wall of the first fixing ring 51 for the subsequent rotational installation of the threaded rod 53. The axis of the holes is parallel to the axis of the first fixing ring 51, ensuring that the threaded rod 53 can operate stably in the horizontal direction after installation. The second fixing ring 52 has the same structure and dimensions as the first fixing ring 51 and is fixedly installed coaxially with the first fixing ring 51 on the inner side of the other support 3, forming a symmetrical support structure. Its inner wall also has bearing mounting holes corresponding to those of the first fixing ring 51 for mounting the other end of the threaded rod 53.

[0047] The two ends of the rack 54 are fixedly installed on the inner sides of the first fixing ring 51 and the second fixing ring 52 by bolt connection, and the tooth surface of the rack 54 faces the round bar, and the axis of the rack 54 is parallel to the axis of the threaded rod 53.

[0048] The gear ring 55 is used to mesh with the drive gear 552 at the output end of the drive motor 4. The gear ring 55 is rotatably mounted on the inner side of the first fixed ring 51 through a bearing. The end face of the gear ring 55 is flush with the end face of the first fixed ring 51 to ensure that the first clamping plate 56 can be coaxial with the second clamping plate 58 after subsequent installation, thus avoiding eccentricity problems during the installation of the round bar.

[0049] The first clamping disc 56 is a circular metal disc with a diameter slightly smaller than the inner ring diameter of the toothed ring 55. It is coaxially fixed on the inner end face of the toothed ring 55 by bolts and rotates synchronously with the rotation of the toothed ring 55. A round bar receiving hole is reserved in the central area of ​​the first clamping disc 56.

[0050] The first clamping block 57 is an arc-shaped metal block with a wear-resistant rubber pad attached to its inner arc surface. This increases the friction with the round bar, preventing damage to the surface of the round bar during clamping, and also improves clamping stability. The first clamping block 57 is driven to move radially inward by the elastic potential energy of the first compression spring 562, thereby achieving automatic clamping of the round bar.

[0051] The second clamping plate 58 has the same structure and size as the first clamping plate 56. The central area of ​​the second clamping plate 58 is also provided with a round bar receiving hole. The elastic force of the second compression spring 582 realizes the automatic clamping of the other end of the round bar, and cooperates with the first clamping block 57 to form a bidirectional stable clamping of the round bar.

[0052] like Figure 5 As shown, two threaded rods 53 are respectively provided with a first gear 531 at one end near the first fixed ring 51, and the two first gears 531 respectively mesh with the toothed ring 55.

[0053] When the drive motor 4 drives the gear ring 55 to rotate, the gear ring 55 simultaneously drives the two first gears 531 to rotate synchronously. Since the two first gears 531 rotate in the same direction and at the same speed, the rotation of the first gears 531 directly drives the two threaded rods 53 to rotate synchronously. The high-precision trapezoidal thread on the surface of the threaded rod 53 cooperates with the threaded hole 611 of the detection component 6, converting the rotational motion of the threaded rod 53 into the horizontal movement of the detection component 6 along the axis of the threaded rod 53, thereby realizing the horizontal movement detection of the detection component 6.

[0054] like Figure 5As shown, a rotating shaft 551 is provided on the first fixed ring 51, and the rotating shaft 551 is fixedly connected to the output end of the drive motor 4. A drive gear 552 is provided on the rotating shaft 551, and the drive gear 552 meshes with the gear ring 55.

[0055] Bearing mounting holes are machined on the outer side wall of the first fixed ring 51 at positions corresponding to the output end of the drive motor 4. The rotating shaft 551 is rotatably mounted in the bearing hole of the first fixed ring 51 through the bearing, and the drive gear 552 is mounted on the rotating shaft 551.

[0056] When the drive motor 4 starts, the power is transmitted to the rotating shaft 551 through the output shaft, and the rotating shaft 551 rotates synchronously. The rotating shaft 551 drives the drive gear 552 on it to rotate. The drive gear 552 transmits power to the gear ring 55 through meshing with the outer teeth of the gear ring 55, and drives the gear ring 55 to rotate smoothly inside the inner ring of the first fixed ring 51. Since the gear ring 55 is fixedly connected to the first clamping plate 56 and is linked with the threaded rod 53 through the first gear 531, the rotation of the gear ring 55 will drive the first clamping plate 56 and the round bar to rotate, and will also drive the threaded rod 53 to rotate to realize the translation of the detection component 6.

[0057] like Figure 5 As shown, a plurality of first sliding grooves 561 are arranged in a ring around the axis on the first clamping plate 56. A first compression spring 562 is respectively arranged in the plurality of first sliding grooves 561, and the plurality of first compression springs 562 are respectively fixedly connected to a plurality of first clamping blocks 57. The plurality of first clamping blocks 57 slide inside the plurality of first sliding grooves 561.

[0058] The first groove 561 is a rectangular groove on the first clamping plate 56 for accommodating the first clamping block 57 and the first compression spring 562, and its number is the same as the number of the first clamping blocks 57; the length direction of the first groove 561 is arranged along the radial direction of the first clamping plate 56 to ensure that the clamping blocks have sufficient sliding space.

[0059] To ensure that the clamping forces in all directions are completely symmetrical when the first clamping block 57 clamps the round bar, and to prevent the round bar from rotating eccentrically due to uneven force, when the round bar needs to be installed, the multiple first clamping blocks 57 are manually pulled radially outward along the first slide groove 561. The first clamping blocks 57 drive the first compression spring 562 to compress along the length of the first slide groove 561, and the first compression spring 562 accumulates elastic potential energy. After the round bar is placed in the central area surrounded by the multiple first clamping blocks 57, the first clamping blocks 57 are released, the spring releases its elastic potential energy, and pushes the first clamping blocks 57 radially inward along the first slide groove 561. The rod moves until the rubber pad on the inner side of the first clamping block 57 is in close contact with the outer circumference of the round bar. Since the multiple first clamping blocks 57 are evenly distributed in a ring and the clamping force provided by the first spring is symmetrical, the round bar is stably clamped in the center of the first clamping disk 56 and rotates synchronously with the rotation of the first clamping disk 56. When detecting round bars of different diameters, the position of the first clamping block 57 can be adjusted by sliding along the first slide groove 561. The compression amount of the first compression spring 562 will automatically adapt to the diameter of the round bar, always maintaining a stable clamping effect and ensuring that the round bar does not move axially or radially during the detection process.

[0060] like Figure 6 As shown, the second clamping plate 58 has a plurality of second sliding grooves 581 arranged in a ring around the axis. Each of the plurality of second sliding grooves 581 is provided with a second compression spring 582, and the plurality of second compression springs 582 are fixedly connected to a plurality of second clamping blocks 59. The plurality of second clamping blocks 59 slide inside the plurality of second sliding grooves 581.

[0061] The working process of the second clamping block 59 is completely coordinated with that of the first clamping block 57: When installing the round bar, multiple second clamping blocks 59 are manually pulled radially outward along the second slide groove 581. The second clamping blocks 59 drive the second compression spring 582 to compress and accumulate elastic potential energy; after placing the other end of the round bar into the central area surrounded by multiple second clamping blocks 59, the second clamping blocks 59 are released, the second compression spring 582 releases elastic potential energy, and pushes the second clamping blocks 59 to slide radially inward along the second slide groove 581 until the inner rubber pad is in close contact with the outer surface of the round bar; due to The clamping force and sliding synchronization of the second clamping block 59 and the first clamping block 57 are completely consistent. The round bar is stably fixed at the center of the two clamping disks and rotates synchronously with the rotation of the first clamping disk 56. When detecting round bars of different diameters, the second clamping block 59 can flexibly adjust its position along the second slide groove 581. The compression of the second spring automatically adapts to the diameter of the round bar and cooperates with the first clamping block 57 to achieve "diameter adaptive clamping". This ensures that no matter how the diameter of the round bar changes, both ends always maintain a stable and balanced clamping effect, providing a reliable guarantee for the smooth rotation of the round bar and subsequent detection.

[0062] like Figures 7 to 10As shown, the detection component 6 includes a ring 61, a rotating ring 62, a brush 63, a moving block 64, a third compression spring 65, a first rotating tooth 66, a second rotating tooth 67, and a third rotating tooth 68;

[0063] A rotating ring 62 is rotatably mounted on a circular ring 61. Multiple brushes 63 are arranged in a ring around the axis of the rotating ring 62. Multiple moving blocks 64 are arranged in a ring array around the axis of the circular ring 61 and are connected to the circular ring 61 by multiple third compression springs 65. A rectangular cavity 69 is formed on the circular ring 61. A first rotating tooth 66 is provided inside the rectangular cavity 69 through a first fixed shaft 661. A first conical tooth 662 is provided on one side of the first rotating tooth 66. A second rotating tooth 67 is provided inside the rectangular cavity 69 through a second fixed shaft 671. A third rotating tooth 68 is provided inside the rectangular cavity 69 through a third fixed shaft 681. The second rotating tooth 67 and the third rotating tooth 68 mesh with each other. A second conical tooth 682 is provided at the top of the third fixed shaft 681. The second conical tooth 682 meshes with the first conical tooth 662. The diameter of the second rotating tooth 67 is larger than the diameter of the third rotating tooth 68.

[0064] The ring 61 is a hollow cylindrical metal component. The rotating ring 62 is rotatably mounted on the ring 61 through a bearing. Each moving block 64 is connected to the ring 61 through a third compression spring 65, which provides a continuous radial inward thrust to the moving block 64. When the round bar enters the ring 61, the moving block 64 moves radially outward under the compression of the round bar, further compressing the third compression spring 65. The reaction force of the third compression spring 65 pushes the moving block 64 to always be in contact with the surface of the round bar, which not only ensures the auxiliary support of the rolling ball 642 for the round bar, but also reduces the frictional resistance when the round bar rotates through the rolling of the rolling ball 642.

[0065] When the ring 61 moves horizontally under the drive of the threaded rod 53, the first rotating tooth 66 on the ring 61 meshes with the rack 54 fixed on the support 3. The rack 54 drives the first rotating tooth 66 to rotate around the first fixed shaft 661, synchronously driving the coaxial first bevel tooth 662 to rotate. The first bevel tooth 662 meshes with the second bevel tooth 682, transmitting power to the third fixed shaft 681, driving the third rotating tooth 68 to rotate. The third rotating tooth 68 meshes with the second rotating tooth 67. Because the second rotating tooth 67 has a larger diameter, when the second rotating tooth 67 meshes with the trapezoidal tooth 621 on the rotating ring 62, it does not... The second rotating tooth 67 drives the rotating ring 62 to rotate. The brush 63 on the rotating ring 62 rotates synchronously with the rotating ring 62, and together with the horizontal movement of the ring 61 and the rotation of the rod, it cleans the outer surface of the rod in 360° all-round way. At the same time, the moving block 64 inside the ring 61 is always in contact with the surface of the rod under the action of the third compression spring 65. The rolling ball 642 rolls with the rotation of the rod, which not only helps to support the rod, but also reduces the frictional resistance when the rod rotates. The probe 641 performs spiral detection on the rod.

[0066] like Figures 7 to 10 As shown, two threaded holes 611 are respectively opened on the ring 61, and the two threaded holes 611 are respectively engaged with two threaded rods 53. A rectangular through hole 612 is opened on the ring 61, which is interconnected with the rectangular cavity 69. The rectangular through hole 612 is engaged with the rack 54, and the rack 54 is engaged with the first rotating tooth 66. Multiple trapezoidal teeth 621 are arranged in a ring array around the axis on the inner side of the rotating ring 62, and the multiple trapezoidal teeth 621 are engaged with the second rotating tooth 67.

[0067] Two threaded holes 611 are symmetrically opened on the circumferential sidewall of the ring 61. The central axes of the two threaded holes 611 are collinear and parallel to the axis of the ring 61. The hole positions correspond to the installation positions of the two threaded rods 53. The inner diameter of the threaded hole 611 is perfectly matched with the outer diameter of the threaded rod 53. The two threaded holes 611 are connected to the two threaded rods 53 through threaded engagement. The engagement adopts a "double thread synchronous drive" design: when the threaded rod 53 rotates, the trapezoidal thread on its surface and the internal thread of the threaded hole 611 of the ring 61 form a helical drive. Since the two threaded rods 53 rotate synchronously and the thread direction is consistent, they can drive the ring 61 to move smoothly and horizontally along the axis of the threaded rod 53, avoiding the ring 61 from deviating due to unilateral force. In order to reduce the frictional resistance of the thread engagement, the inner wall of the threaded hole 611 and the thread surface of the threaded rod 53 are coated with wear-resistant grease, which reduces component wear and improves the smoothness of transmission.

[0068] The rectangular through hole 612 ensures that the rack 54 can be smoothly inserted without significant wobbling; it provides an installation and movement channel for the rack 54: the rack 54 is fixed between two supports 3 along the length of the detection platform 2, and its length covers the maximum travel of the ring 61. After the rack 54 passes through the rectangular through hole 612, it meshes with the first rotating tooth 66 in the rectangular cavity 69; since the width and height of the rectangular through hole 612 are only slightly larger than the rack 54, it can limit the meshing position of the rack 54 and the first rotating tooth 66, ensuring that the rack 54 is always precisely aligned with the tooth surface of the first rotating tooth 66, avoiding transmission failure due to meshing misalignment; when the ring 61 moves horizontally along the threaded rod 53, the rectangular through hole 612 moves synchronously with the ring 61, while the rack 54 remains relatively fixed. The relative movement of the two drives the first rotating tooth 66 to rotate around the first fixed axis 661, thereby driving the rotating ring 62 to rotate, and cleaning the outer circumference of the round bar through the brush 63.

[0069] like Figure 9 and Figure 11 As shown, two rolling balls 642 are respectively provided on the moving block 64, and a probe 641 is provided between the two rolling balls 642. The probe 641 is electrically connected to the wire 8. Limiting blocks 631 are respectively provided on multiple brushes 63, and the multiple limiting blocks 631 are located inside the rotating ring 62. A fourth compression spring 632 is provided on each of the multiple limiting blocks 631.

[0070] Two rolling balls 642 are symmetrically embedded on the inner arc surface of each moving block 64. The rolling balls 642 are made of high-hardness bearing steel to ensure smooth rolling when in contact with the surface of the round bar. When the round bar rotates under the drive of the clamping plate, the rolling balls 642 maintain rolling contact with the outer surface of the round bar, reducing wear between the surface of the round bar and the moving block 64. At the same time, the rolling balls 642 play a radial positioning role for the round bar through close contact with the round bar. With the thrust of the third compression spring 65, it ensures that the round bar is always in the center position of the ring 61 during the detection process, avoiding detection errors caused by the displacement of the round bar.

[0071] A detection probe 641 is fixedly installed on the inner side of the moving block 64 between the two rolling balls 642. The detection process of the probe 641 is synchronized with the movement of the round bar: when the round bar rotates and the ring 61 drives the moving block 64 to move horizontally, the probe 641 moves along the axis of the round bar with the moving block 64. At the same time, the rotation of the round bar enables the probe 641 to cover the entire circumferential surface of the round bar, forming a "spiral scanning detection", thereby comprehensively detecting the outer circumferential surface of the round bar.

[0072] The function of the limiting block 631 is to ensure that when the brush 63 is cleaning the surface of the round bar, it will be subjected to the reaction force of the round bar, causing the brush 63 to retract inward. Through the joint action with the fourth compression spring 632, pressure is applied to the outside of the round bar, thereby improving the cleaning efficiency. In addition, the limiting block 631 evenly transmits the elastic force of the fourth compression spring 632 to the brush 63, so that the brush 63 can always fit the surface of the round bar and adapt to the cleaning needs of round bars of different diameters.

[0073] The rolling ball 642 of the moving block 64 reduces frictional resistance, ensuring that the round bar can rotate smoothly, providing a stable motion basis for the accurate detection of the probe 641; the probe 641 transmits the detection data to the control component 7 in real time through the electrical connection with the wire 8, realizing the synchronous detection of cracks in the round bar; the limiting block 631 of the brush 63 cooperates with the fourth compression spring 632 to enable the brush 63 to adapt to round bars of different diameters, always maintain a stable cleaning pressure, and avoid impurities affecting the detection of the probe 641.

[0074] A method for detecting cracks in a round bar includes the following steps:

[0075] S1: First, place one end of the round bar on the first clamping plate 56 and clamp and fix one end of the round bar by the first clamping block 57 on the first clamping plate 56. Then, place the other end of the round bar on the second clamping plate 58 and clamp and fix the other end of the round bar by the second clamping block 59 on the second clamping plate 58.

[0076] S2: Start the drive motor 4. The drive motor 4 drives the gear ring 55 and the first clamping plate 56 to rotate, and drives the entire round bar and the second clamping plate 58 to rotate.

[0077] S3: The toothed ring 55 drives the threaded rod 53 to rotate, the threaded rod 53 drives the ring 61 to move horizontally, and the moving ring 61 drives the rotating ring 62 to rotate through the rack 54.

[0078] S4: The rotating ring 62 drives the brush 63 to clean the round bar, and the rolling ball 642 on the moving block 64 rolls close to the outer surface of the round bar.

[0079] S5: The probe 641 is driven by the ring 61 to cooperate with the rotating rod to perform spiral detection.

[0080] The working process of this invention is as follows: First, one end of the round bar is placed on the first clamping plate 56. The first clamping block 57 is pushed radially outward by manual operation. The multiple first clamping blocks 57 will compress the first compression spring 562 at the same time. Then, the round bar is placed between the multiple first clamping blocks 57. The multiple first clamping blocks 57 are released. The elastic potential energy of the first compression spring 562 pushes the multiple first clamping blocks 57 to contact the outer circumference of the round bar and fix it.

[0081] Similarly, by manually pushing the second clamping block 59 radially outward, the multiple second clamping blocks 59 will simultaneously compress the second compression spring 582. Then, the round bar is placed between the multiple second clamping blocks 59, the multiple first clamping blocks 57 are released, and the elastic potential energy of the second compression spring 582 pushes the multiple second clamping blocks 59 to contact the outer circumference of the round bar and fix it.

[0082] During the installation and fixing process, the round bar will pass through the ring 61. The moving block 64 on the ring 61 will move radially outward, and the third compression spring 65 will be compressed through the moving block 64. The rolling ball 642 on the moving block 64 will roll and contact the outer circumference of the round bar. At the same time, the brush 63 on the rotating ring 62 will be subjected to a radially outward force, causing the brush 63 to push the limiting block 631 to move radially. The limiting block 631 will then compress the fourth compression spring 632 radially outward, thereby ensuring that the brush 63 is in contact with the outer circumference of the round bar. The elastic potential energy of the fourth compression spring 632 will also cause the brush 63 to exert a certain pressure on the outer surface of the round bar in the opposite direction.

[0083] Then, the drive motor 4 is driven by the control component 7, and the signal and current are transmitted to the detection component 6 through the wire 8. The drive motor 4 drives the rotating shaft 551 to rotate, which in turn drives the drive gear 552 to rotate, and the drive gear 552 drives the entire gear ring 55 to rotate. The gear ring 55 will drive the first clamping plate 56 and the round bar to rotate together, while the second clamping plate 58 will rotate on the second fixed ring 52. Since the gear ring 55 meshes with the first gear 531, the rotation of the first gear 531 will drive the entire threaded rod 53 to rotate. The simultaneous rotation of the two bolt rods will drive the ring 61 on the bolt rod. The ring 61 moves horizontally, thereby moving the rotating ring 62 and the moving block 64. During the horizontal movement of the ring 61, the first rotating tooth 66 is driven to rotate by the rack 54. The first rotating tooth 66 transmits power to the first bevel tooth 662, and then to the second bevel tooth 682. The second bevel tooth 682 drives the third rotating tooth 68 to rotate. Since the third rotating tooth 68 meshes with the second rotating tooth 67, it ultimately drives the second rotating tooth 67 to rotate. The second rotating tooth 67 drives the entire rotating ring 62 to rotate, thereby causing the brush 63 to rotate. Together with the rotating rod, the brush 63 cleans the impurities on the outer surface of the rod's circumference.

[0084] Meanwhile, the rolling ball 642 on the moving block 64 rolls close to the outer surface of the round bar; and moves along the axis during the rotation of the round bar, performing spiral detection through the probe 641 between the rolling balls 642.

[0085] The above embodiments are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A device for detecting cracks in a round bar, characterized in that, include: Support leg (1), detection platform (2), support (3), drive motor (4), rotating assembly (5), detection assembly (6), control assembly (7) and wire (8); A detection platform (2) is fixedly installed on multiple legs (1). Two supports (3) are symmetrically arranged on each detection platform (2). A drive motor (4) is fixedly installed on the outside of any one of the supports (3). A rotating component (5) is fixedly installed on the two supports (3). The output end of the drive motor (4) is connected to the rotating component (5). A detection component (6) is movably installed on the rotating component (5). A control component (7) is fixedly installed in the middle of the detection platform (2). The control component (7) is electrically connected to the detection component (6) through a wire (8). The drive motor (4) drives the rotating component (5) to rotate the round bar. At the same time, the rotating component (5) drives the detection component (6) to move horizontally to clean the outer surface of the round bar and to detect the round bar. The rotating assembly (5) includes a first fixed ring (51), a second fixed ring (52), a threaded rod (53), a rack (54), a toothed ring (55), a first clamping plate (56), a first clamping block (57), a second clamping plate (58), and a second clamping block (59); The first fixing ring (51) is fixedly installed on a support (3), the second fixing ring (52) is fixedly installed on another support (3), the two threaded rods (53) are respectively rotatably installed inside the first fixing ring (51) and the second fixing ring (52), the two ends of the rack (54) are respectively fixedly installed inside the first fixing ring (51) and the second fixing ring (52), the toothed ring (55) is rotatably installed inside the first fixing ring (51), the first clamping plate (56) is fixedly installed on the toothed ring (55), a plurality of first clamping blocks (57) are arranged in a ring array with the axis as the center on the first clamping plate (56), the second clamping plate (58) is rotatably installed on the second fixing ring (52), and a plurality of second clamping blocks (59) are arranged in a ring array with the axis as the center on the second clamping plate (58). The detection component (6) includes a ring (61), a rotating ring (62), a brush (63), a moving block (64), a third compression spring (65), a first rotating tooth (66), a second rotating tooth (67), and a third rotating tooth (68). A rotating ring (62) is rotatably mounted on the circular ring (61). Multiple brushes (63) are arranged in a ring around the axis of the rotating ring (62). Multiple moving blocks (64) are arranged in a ring array within the circular ring (61) around the axis of the circular ring (61). The multiple moving blocks (64) are connected to the circular ring (61) via multiple third compression springs (65). A rectangular cavity (69) is formed on the circular ring (61). Inside the rectangular cavity (69), a first rotating tooth (66) is provided via a first fixed shaft (661). One side of the first rotating tooth (66)... The rectangular cavity (69) is provided with a first bevel tooth (662), and a second rotating tooth (67) is provided inside the rectangular cavity (69) through a second fixed shaft (671). A third rotating tooth (68) is provided inside the rectangular cavity (69) through a third fixed shaft (681). The second rotating tooth (67) and the third rotating tooth (68) mesh with each other. The top end of the third fixed shaft (681) is provided with a second bevel tooth (682), and the second bevel tooth (682) meshes with the first bevel tooth (662). The diameter of the second rotating tooth (67) is greater than the diameter of the third rotating tooth (68). The ring (61) has two threaded holes (611) respectively, and the two threaded holes (611) are respectively engaged with the two threaded rods (53). The ring (61) has a rectangular through hole (612), which is connected to the rectangular cavity (69). The rectangular through hole (612) is engaged with the rack (54). The rack (54) is meshed with the first rotating tooth (66). The inner side of the rotating ring (62) is arranged with multiple trapezoidal teeth (621) in a ring array with the axis as the center, and the multiple trapezoidal teeth (621) are meshed with the second rotating tooth (67). Two rolling balls (642) are respectively provided on the moving block (64), and a probe (641) is provided between the two rolling balls (642). The probe (641) is electrically connected to the wire (8). Limiting blocks (631) are respectively provided on the multiple brushes (63), and the multiple limiting blocks (631) are located inside the rotating ring (62). A fourth compression spring (632) is respectively provided on the multiple limiting blocks (631).

2. The round bar crack detection device as described in claim 1, characterized in that: The two threaded rods (53) are respectively provided with a first gear (531) at one end near the first fixed ring (51), and the two first gears (531) respectively mesh with the toothed ring (55).

3. The round bar crack detection device as described in claim 1, characterized in that: The first fixed ring (51) is provided with a rotating shaft (551), and the rotating shaft (551) is fixedly connected to the output end of the drive motor (4). The rotating shaft (551) is provided with a drive gear (552), and the drive gear (552) meshes with the gear ring (55).

4. The round bar crack detection device as described in claim 1, characterized in that: The first clamping plate (56) has a plurality of first sliding grooves (561) arranged in a ring around the axis. Each of the plurality of first sliding grooves (561) is provided with a first compression spring (562), and the plurality of first compression springs (562) are fixedly connected to the plurality of first clamping blocks (57). The plurality of first clamping blocks (57) slide inside the plurality of first sliding grooves (561).

5. The round bar crack detection device as described in claim 1, characterized in that: The second clamping plate (58) has a plurality of second sliding grooves (581) arranged in a ring around the axis. Each of the plurality of second sliding grooves (581) is provided with a second compression spring (582), and the plurality of second compression springs (582) are fixedly connected to the plurality of second clamping blocks (59). The plurality of second clamping blocks (59) slide inside the plurality of second sliding grooves (581).

6. A method for detecting cracks in a round bar, employing the round bar crack detection device according to any one of claims 1 to 5, characterized in that, Includes the following steps: S1: First, place one end of the round bar on the first clamping plate (56) and clamp and fix one end of the round bar by the first clamping block (57) on the first clamping plate (56). Then, place the other end of the round bar on the second clamping plate (58) and clamp and fix the other end of the round bar by the second clamping block (59) on the second clamping plate (58). S2: Start the drive motor (4), the drive motor (4) drives the gear ring (55) and the first clamping plate (56) to rotate, and drives the entire round bar and the second clamping plate (58) to rotate; S3: The toothed ring (55) drives the threaded rod (53) to rotate, the threaded rod (53) drives the ring (61) to move horizontally, and the moving ring (61) drives the rotating ring (62) to rotate through the rack (54); S4: The rotating ring (62) drives the brush (63) to clean the round bar, and the rolling ball (642) on the moving block (64) rolls close to the outer surface of the round bar; S5: The probe (641) is driven by the ring (61) to cooperate with the rotating rod to perform spiral detection.

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