A laser detector for straightness of building steel bars

Abstract

The present invention discloses a laser detector for the straightness of building steel bars, which relates to the technical field of building steel bar detection, and includes a bearing base; further comprising: a conveying mechanism is provided at the left end of the top surface of the bearing base, and the conveying mechanism includes equidistantly arranged racks symmetrically distributed front to back, and equidistant pushing racks are provided between the symmetrically arranged equidistantly arranged racks; a cleaning mechanism is provided at the middle of the top surface of the bearing base, and the cleaning mechanism includes supporting and turning racks symmetrically distributed front to back, and the outer ends of the symmetrically arranged supporting and turning racks are both provided with supporting and cleaning racks through bearings. The laser detector for the straightness of building steel bars continuously conveys the steel bars through the conveying mechanism, and links the cleaning mechanism to transfer the steel bars so that the steel bars are rotated and knocked for cleaning during rotation, and fall to the detection mechanism after cleaning, and the positioning of the steel bar bending part is achieved by the emission and reception of the laser beam, thereby improving the accuracy and efficiency of detection.

Description

Technical Field

[0001] The present invention relates to the technical field of building steel bar detection, in particular to a building steel bar straightness laser detector. Background Art

[0002] Construction steel bars refer to various steel bars, steel wires and other steel materials used in reinforced concrete. The cross-section of such steel bars is usually circular and is mainly used to enhance the tensile strength of concrete, enabling reinforced concrete structures to withstand greater loads. Depending on different construction requirements, the length of the steel bars usually ranges from 6 to 12 meters. During processing and transportation, some steel bars are subjected to greater forces, which may cause bending and dislocation in different positions. Inspection is required when bundling for use to avoid situations where bent steel bars affect the safety of the building structure.

[0003] The invention with announcement number CN218973435U discloses a steel bar detection device based on machine vision. By setting a cable on a base plate, the user sets two base plates at both ends of the steel bar to keep the cable in a taut state, so that the sliding mechanism can slide back and forth on the cable, thereby achieving the effect of moving the camera and taking images of the steel bar. The user only needs to install and disassemble the base plate to set the taut cable on one side of the steel bar, which can facilitate the user to use the image capture device to scan the steel bar and detect the straightness of the steel bar.

[0004] The invention with announcement number CN118640836A discloses a steel bar detection method based on machine vision. It adopts the cooperation of No. 2 motor, connecting shaft, driving sprocket, transmission chain and two driven sprockets to drive two bidirectional screw rods to rotate. While the two bidirectional screw rods rotate, they drive the driving block and anti-slip splint to move, so that the four splints are clamped at both ends of the outer wall of the steel bar, which is convenient for quickly limiting and fixing the steel bar, and facilitating subsequent steel bar detection operations.

[0005] However, the above-mentioned device for detecting the straightness of steel bars through a visual mechanism still has the following problems during use: the existing straightness detection of steel bars is achieved through the movement of the visual mechanism, but this type of detection method is difficult to ensure the cleanliness of the steel bar surface. Dirt stuck to the surface of the steel bar during production and transportation can easily affect the judgment of straightness during the detection process. At the same time, manual handling and loading and unloading are required during the detection, which affects the accuracy and efficiency of the detection.

[0006] Therefore, we proposed a laser detector for the straightness of building steel bars to solve the above problems. Summary of the Invention

[0007] The purpose of the present invention is to provide a laser straightness detector for building steel bars, in order to solve the problem that the existing straightness detection of steel bars is achieved by moving a visual mechanism, but this type of detection method is difficult to ensure the cleanliness of the steel bar surface. The debris stuck to the steel bar surface during production and transportation can easily affect the judgment of the straightness during the detection process. At the same time, manual handling and loading and unloading are required during the detection, which affects the accuracy and efficiency of the detection.

[0008] To achieve the above-mentioned object, the present invention provides the following technical solution: a laser detector for the straightness of building steel bars, comprising a supporting base and a detection mechanism mounted on the right end of the top surface of the supporting base, wherein the detection mechanism includes a laser transmitter and a laser receiver for detecting the straightness of building steel bars; and further comprising:

[0009] A conveying mechanism is provided at the left end of the top surface of the bearing base, and the conveying mechanism includes equidistant arrangement racks symmetrically distributed front and back, and equidistant pushing racks are provided between the symmetrically arranged equidistant arrangement racks;

[0010] A cleaning mechanism is provided in the middle of the top surface of the supporting base, and the cleaning mechanism includes a supporting flip frame symmetrically distributed in the front and back, and the outer ends of the symmetrically arranged supporting flip frames are provided with supporting cleaning frames through bearings, and a magnetic contact plate with intermittently distributed magnetic blocks is fixedly installed on the inner side of the supporting flip frame.

[0011] Preferably, the detection mechanism includes a steel bar bearing platform, and the steel bar bearing platform is slidably installed on the right side of the top surface of the bearing base in a left-right symmetrical manner, and the steel bar bearing platforms distributed on the left and right are combined to form a semicircular mechanism to prevent the steel bars from rolling and dislocating, and the sliding steel bar bearing platforms are used to move away from each other to cut the steel bars after testing the straightness.

[0012] Preferably, the detection mechanism includes a bidirectional threaded rod, and the bidirectional threaded rod is rotatably arranged in front of the top surface of the supporting base through a bearing, and the threads of the bidirectional threaded rod pass through the front ends of the left and right steel bar supporting platforms, and the laser transmitter and laser receiver included in the detection mechanism are installed on the front and rear sides of the left end of the supporting base.

[0013] Preferably, the laser transmitter included in the detection mechanism emits laser beams with equal angle distribution toward the direction of the laser receiver, and the bent steel bar blocks the laser receiver from receiving the laser beam, so that the bending part of the steel bar can be located.

[0014] Preferably, the conveying mechanism includes a driving shaft, and the driving shaft is rotatably arranged on the left and right sides of the bottom surface of the equidistant arrangement rack through bearings, and the middle part of the driving shaft is fixedly connected to the outer wall of the guide turntable in an eccentric manner, and the inner wall of the guide turntable is connected to the left and right sides of the bottom surface of the equidistant pushing rack through eccentric bearings.

[0015] Preferably, the front end of the driving shaft included in the conveying mechanism is connected through a first pulley assembly, and the driving shaft and the guide turntable drive the equidistant pushing rack to rotate clockwise in the circumferential direction, so that the equidistant pushing rack can intermittently lift the bottom to transport the steel bars on the top of the equidistant arrangement rack to the right end for loading.

[0016] Preferably, the cleaning mechanism includes a rotating roller, and the rotating roller is rotatably arranged in the upper middle part of the supporting base through a bearing, and the outer wall of the rotating roller is fixedly connected to the inner end of the supporting turning frame at equal angles, and a cleaning frame is fixedly arranged between the front and rear symmetrical supporting turning frames, and at the same time, the front end of the rotating roller and the driving shaft are connected to each other through a second pulley assembly.

[0017] Preferably, the cleaning mechanism includes a reciprocating threaded rod, and the reciprocating threaded rod is rotatably arranged inside the cleaning frame through a bearing, and the front end of the reciprocating threaded rod and the supporting flip frame are connected to each other through a torsion spring, and the rear end of the reciprocating threaded rod is fixedly provided with a driving gear, and the front and rear ends of the reciprocating threaded rod are threadedly connected to the inner end of the telescopic cleaning brush plate.

[0018] Preferably, the cleaning mechanism includes a main sector gear, and the main sector gear is fixedly installed at the rear of the middle part of the top surface of the supporting base, and the main sector gear is used to engage and rotate the driving gear driven by the rotating roller, and the rotating driving gear and the reciprocating threaded rod are used to drive the threaded telescopic cleaning brush plate to slide inward, and at the same time, the telescopic cleaning brush plate moves and repels the magnetic contact plate, so as to intermittently repel the magnetic blocks distributed at equal distances inside the magnetic contact plate, so that the telescopic cleaning brush plate is lifted and lowered back and forth to achieve vibration and knocking on the steel bars.

[0019] Preferably, a guide gear is provided on the upper part of the inner part of the supporting cleaning frame included in the cleaning mechanism for rotation through a bearing, and a sub-sector gear is elastically slidably installed on the upper part of the inner side of the supporting flipping frame included in the cleaning mechanism, and the supporting cleaning frame relies on its own weight to avoid causing the steel bars to flip and fall off, and when the guide gear inside the supporting cleaning frame is engaged with the sub-sector gear, the steel bars are driven to rotate, and foreign objects on the surface of the steel bars are cleaned in cooperation with the moving telescopic cleaning brush plate.

[0020] Compared with the existing technology, the beneficial effects of the present invention are as follows: the construction steel bar straightness laser detector continuously conveys the steel bars through the conveying mechanism and transfers the steel bars through the linkage cleaning mechanism so that the steel bars are rotated and knocked for cleaning during rotation. After cleaning, the steel bars fall to the detection mechanism. The emission and reception of the laser beam realizes the positioning of the steel bar bending point, thereby improving the accuracy and efficiency of the detection. The specific contents are as follows:

[0021] 1. The driving shaft drives the guide turntable fixed in the middle to rotate. The guide turntable drives the equidistant pushing frame connected to the inner bearing to rotate in a clockwise circle. When rising, it drives the steel bars on the top surface of the equidistant arrangement frame to move to the right. When descending, it places the steel bars at the next load-bearing position on the right end of the top of the equidistant arrangement frame, and then continuously conveys auxiliary steel bars for subsequent cleaning and detection operations.

[0022] 2. The rotating roller drives the supporting turning frame and the supporting cleaning frame to rotate clockwise, and then the supporting cleaning frame moves to the right end of the equidistant arrangement frame to lift the steel bars for transfer, and then the supporting cleaning frame is lifted to the outer end of the steel bars and continues to rotate clockwise, so as to intermittently lift and transfer the steel bars of the conveying mechanism.

[0023] The rotation of the supporting turning frame drives the driving gear to engage with the main sector gear, and then the driving gear drives the reciprocating threaded rod to rotate, driving the threaded telescopic cleaning brush plate to move toward the middle of the steel bar, and reciprocatingly lifting and lowering through the repulsion of the magnetic contact plate, cleaning the dirt stuck to the steel bar during movement. At the same time, when disengaging from the main sector gear, the torsion spring at the front end drives the reciprocating threaded rod to rotate in the opposite direction, so that the telescopic cleaning brush plate is reset to avoid affecting the subsequent operation of lowering the steel bar to the detection mechanism.

[0024] 3. The supporting cleaning frame is always perpendicular to the bearing base due to its own weight. The supporting turning frame and the auxiliary sector gear rotate with the rotating roller, so that the supporting cleaning frame rotates relative to the supporting turning frame, and during rotation, the guide gear and the auxiliary sector gear engage with each other, thereby driving the guide gear to drive the steel bar to rotate synchronously, so as to cooperate with the moving telescopic cleaning brush plate to achieve all-round cleaning of the outer surface of the steel bar.

[0025] 4. The cleaning mechanism drives the steel bar close to the resistance inclined plate, and the resistance steel bar slides down to the inside of the steel bar bearing platform. The steel bar is at the bottom to prevent rolling. At the same time, the laser transmitter sends the laser beam to the inside of the laser receiver for reception. When the steel bar is bent, it will block the laser beam, making it impossible for the laser receiver to receive the corresponding laser beam, so that the inspection personnel can quickly locate the bent steel bar and its bending position. The bidirectional threaded rod drives the steel bar bearing platform to separate, so that the steel bar falls and is collected for processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0027] Figure 2 This is a schematic diagram of the guide turntable installation structure of the present invention;

[0028] Figure 3 This is a schematic diagram of the three-dimensional structure of the equidistant arrangement frame of the present invention;

[0029] Figure 4 For the present invention Figure 3 A in the middle is an enlarged structural diagram;

[0030] Figure 5 It is a three-dimensional schematic diagram of the cleaning mechanism of the present invention;

[0031] Figure 6 For the present invention Figure 5 The enlarged structural diagram at B in the middle;

[0032] Figure 7 This is a schematic diagram of the three-dimensional structure of the supporting turning frame and the supporting cleaning frame of the present invention;

[0033] Figure 8 For the present invention Figure 7 The enlarged structural diagram at C in the middle;

[0034] Figure 9 This is a schematic diagram of the meshing structure between the guide gear and the auxiliary sector gear of the present invention;

[0035] Figure 10 This is a schematic diagram of the structure after the steel bar bearing platform of the present invention is separated.

[0036] In the figure: 1. Carrying base; 2. Laser transmitter; 3. Laser receiver; 4. Telescopic cleaning brush plate; 5. Equidistant arrangement frame; 6. Equidistant pushing frame; 7. Supporting flip frame; 8. Supporting cleaning frame; 9. Steel bar bearing platform; 10. Bidirectional threaded rod; 11. Driving shaft; 12. Guide turntable; 13. Rotating roller; 14. Cleaning frame; 15. Reciprocating threaded rod; 16. Torsion spring; 17. Driving gear; 18. Main sector gear; 19. Guide gear; 20. Auxiliary sector gear; 21. Second pulley assembly; 22. First pulley assembly; 23. Magnetic contact plate. DETAILED DESCRIPTION

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0038] See also Figures 1-10 , the present invention provides the following technical solutions:

[0039] Example 1: In order to solve the problems existing in the use of the existing steel bar straightness detection device, this embodiment adopts the following technical solution: a construction steel bar straightness laser detector, including a bearing base 1, a conveying mechanism is provided at the left end of the top surface of the bearing base 1, and the conveying mechanism includes equidistant arrangement frames 5 symmetrically distributed front and back, and equidistant pushing frames 6 are provided between the symmetrically arranged equidistant arrangement frames 5; the conveying mechanism includes a driving shaft 11, and the driving shaft 11 is rotatably arranged on the left and right sides of the bottom surface of the equidistant arrangement frame 5 through bearings, and the middle part of the driving shaft 11 is fixedly connected to the outer wall of the guide turntable 12 in an eccentric manner, and the inner wall of the guide turntable 12 is connected to the left and right sides of the bottom surface of the equidistant pushing frame 6 through an eccentric bearing.

[0040] The front end of the driving shaft 11 included in the conveying mechanism is connected through the first pulley assembly 22, and the driving shaft 11 and the guide turntable 12 drive the equidistant pushing rack 6 to rotate clockwise in the circumferential direction, so that the equidistant pushing rack 6 can intermittently lift the bottom to transport the steel bars on the top of the equidistant arrangement rack 5 to the right end for loading.

[0041] like Figure 1-Figure 4 As shown, the motor installed at the conveying mechanism drives the drive shaft 11 connected by the first pulley assembly 22 to rotate inside the equidistant arrangement frame 5, and then the equidistant arrangement frame 5 drives the guide turntable 12 fixed in the middle to rotate eccentrically, and at the same time, the equidistant pushing frame 6 connected to the bearing on the inner side of the guide turntable 12 is driven to rotate in a clockwise circular shape, and then the steel bars are placed on the top of the equidistant arrangement frame 5. Through the clockwise rotation of the equidistant pushing frame 6, the steel bars on the top surface of the equidistant arrangement frame 5 are lifted and moved to the right when rising, and the steel bars are placed at the next load-bearing position on the right end of the top of the equidistant arrangement frame 5 when descending, and then the subsequent cleaning and detection operations are carried out by continuously conveying auxiliary steel bars.

[0042] Example 2: In order to solve the problems existing in the existing steel bar straightness detection device during use, this embodiment adopts the following technical scheme: a cleaning mechanism is provided in the middle of the top surface of the supporting base 1, and the cleaning mechanism includes a supporting turning frame 7 symmetrically distributed in the front and back, and the outer ends of the symmetrically arranged supporting turning frames 7 are provided with supporting cleaning frames 8 through bearings; the cleaning mechanism includes a rotating roller 13, and the rotating roller 13 is rotatably arranged in the upper middle part of the supporting base 1 through bearings, and the outer wall of the rotating roller 13 is fixedly connected to the inner end of the supporting turning frame 7 at equal angles, and a cleaning frame 14 is fixedly provided between the front and back symmetrical supporting turning frames 7, and at the same time, the front end of the rotating roller 13 and the driving shaft 11 are connected to each other through a second pulley assembly 21, and a magnetic contact plate with intermittently distributed magnetic blocks is fixedly installed on the inner side of the supporting turning frame 7.

[0043] The cleaning mechanism includes a reciprocating threaded rod 15, and the reciprocating threaded rod 15 is rotatably arranged inside the cleaning frame 14 through a bearing, and the front end of the reciprocating threaded rod 15 and the supporting flip frame 7 are connected to each other through a torsion spring 16, and the rear end of the reciprocating threaded rod 15 is fixedly provided with a driving gear 17, and the front and rear ends of the reciprocating threaded rod 15 are threadedly connected to the inner end of the telescopic cleaning brush plate 4.

[0044] The cleaning mechanism includes a main sector gear 18, and the main sector gear 18 is fixedly installed at the rear of the middle part of the top surface of the supporting base 1, and the main sector gear 18 is used to engage and rotate the driving gear 17 driven by the rotating roller 13, and the rotating driving gear 17 and the reciprocating threaded rod 15 are used to drive the threaded telescopic cleaning brush plate 4 to slide inward, and at the same time, the telescopic cleaning brush plate 4 moves and repels the magnetic contact plate 23, so as to intermittently repel the magnetic blocks evenly distributed inside the magnetic contact plate 23, so that the telescopic cleaning brush plate 4 is lifted and lowered back and forth to achieve vibration and knocking on the steel bars.

[0045] A guide gear 19 is provided on the upper part of the inner part of the supporting cleaning frame 8 included in the cleaning mechanism through a bearing for rotation, and a sub-sector gear 20 is elastically slidably installed on the upper part of the inner side of the supporting flipping frame 7 included in the cleaning mechanism, and the supporting cleaning frame 8 relies on its own weight to avoid causing the steel bars to flip and fall off, and when the guide gear 19 inside the supporting cleaning frame 8 is engaged with the sub-sector gear 20, the steel bars are driven to rotate, and the foreign matter on the surface of the steel bars is cleaned by cooperating with the moving telescopic cleaning brush plate 4.

[0046] like Figure 1 、 Figure 5 、 Figure 7 As shown, the driving shaft 11 of the conveying mechanism rotates the meshing rotating roller 13 through the second pulley assembly 21, and the rotating roller 13 drives the outer wall's supporting turning frame 7 and the supporting cleaning frame 8 to rotate clockwise, and then when the supporting cleaning frame 8 moves to the right end of the equidistant arrangement frame 5, the steel bar is lifted and transferred, and then the supporting cleaning frame 8 is lifted on the outer end of the steel bar and continues to rotate clockwise, so as to intermittently lift and transfer the steel bar of the conveying mechanism.

[0047] Furthermore, the supporting turning frame 7 supporting the steel bar is engaged with the fixed main sector gear 18 through the external driving gear 17, and then the driving gear 17 drives the reciprocating threaded rod 15 inside the cleaning frame 14 to rotate, so as to drive the threaded telescopic cleaning brush plate 4 to move synchronously toward the middle of the steel bar, and clean the debris stuck on the surface of the steel bar during the movement to prevent the debris from affecting the subsequent laser detection of the steel bar. At the same time, when disengaging from the main sector gear 18, the torsion spring 16 at the front end drives the reciprocating threaded rod 15 to rotate in the opposite direction, so that the telescopic cleaning brush plate 4 is reset to avoid affecting the subsequent operation of lowering the steel bar to the detection mechanism.

[0048] like Figure 6 、 Figure 9 As shown, during the process of the supporting cleaning frame 8 driving the steel bar to rotate, it is always perpendicular to the supporting base 1 due to its own weight. At the same time, the supporting turning frame 7 at the outer end of the supporting cleaning frame 8 and the auxiliary sector gear 20 elastically slidably connected follow the rotating roller shaft 13 to rotate, so that the supporting cleaning frame 8 can rotate relative to the supporting turning frame 7, and during the rotation process, the internal guide gear 19 is engaged with the auxiliary sector gear 20 (the weight of the supporting cleaning frame 8 is greater than the elastic force of the auxiliary sector gear 20 elastically slidably connected), thereby driving the guide gear 19 to drive the steel bar to rotate synchronously, so as to cooperate with the moving telescopic cleaning plate 4 to achieve all-round cleaning of the outer surface of the steel bar, and at the same time, during the movement of the telescopic cleaning plate 4, it intermittently repels the magnetic block inside the magnetic contact plate 23, so that the telescopic cleaning plate 4 can be lifted and lowered back and forth, generating vibration in the process of cleaning the steel bar surface, so as to knock to assist in cleaning the steel bar.

[0049] Example 3: In order to solve the problems existing in the existing steel bar straightness detection device during use, this embodiment adopts the following technical solution: a detection mechanism is installed on the right end of the top surface of the supporting base 1, and the detection mechanism includes a laser transmitter 2 and a laser receiver 3 for detecting the straightness of the building steel bar;

[0050] The detection mechanism includes a steel bar bearing platform 9, and the steel bar bearing platform 9 is slidably installed on the right side of the top surface of the bearing base 1 in a left-right symmetrical manner, and the steel bar bearing platforms 9 distributed on the left and right are combined to form a semicircular mechanism to prevent the steel bars from rolling and dislocating, and the sliding steel bar bearing platforms 9 are used to move the steel bars away from each other after testing the straightness.

[0051] The detection mechanism includes a bidirectional threaded rod 10, and the bidirectional threaded rod 10 is rotatably arranged in front of the top surface of the supporting base 1 through a bearing, and the bidirectional threaded rod 10 is threaded through the front end of the left and right steel bar supporting platforms 9, and the laser emitter 2 and laser receiver 3 included in the detection mechanism are installed on the front and rear sides of the left end of the supporting base 1; the laser emitter 2 included in the detection mechanism emits laser beams distributed at equal angles in the direction of the laser receiver 3, and the bent steel bars block the laser receiver 3 from receiving the laser beam, so that the bending part of the steel bars can be positioned.

[0052] like Figure 1 、 Figure 10 As shown, when the conveying mechanism drives the cleaned steel bars to rotate and approach the detection mechanism, the interference inclined plate installed above the detection mechanism approaches the steel bars and interferes with them, so that the steel bars inside the cleaning frame 8 are guided to the top of the steel bar supporting platform 9 through the interference inclined plate, and the steel bar supporting platform 9 of the semicircular mechanism is used to ensure that the steel bars are at the bottom to avoid rolling affecting the detection. At the same time, the laser transmitter 2 sends the laser beam to the inside of the laser receiver 3 for reception. When the steel bar is bent, the laser beam will be blocked, so that the laser receiver 3 cannot receive the corresponding laser beam, so that the detection personnel can quickly locate the bent steel bar and its bending position.

[0053] Furthermore, the motor of the detection mechanism drives the bidirectional threaded rod 10 to rotate so that the fitted steel bar support platforms 9 move away from each other, allowing the steel bars to fall downward through the gaps in the steel bar support platforms 9, eliminating the need for manual handling by operators, thereby improving the accuracy and efficiency of detection.

[0054] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A laser detector for detecting the straightness of building steel bars, comprising a bearing base (1) and a detection mechanism mounted on the right end of the top surface of the bearing base (1), wherein the detection mechanism comprises a laser transmitter (2) and a laser receiver (3) for detecting the straightness of building steel bars; It is characterized by: Also includes: A conveying mechanism is provided at the left end of the top surface of the bearing base (1), and the conveying mechanism includes equidistant arrangement racks (5) symmetrically distributed front and back, and equidistant pushing racks (6) are provided between the symmetrically arranged equidistant arrangement racks (5); A cleaning mechanism is provided in the middle of the top surface of the supporting base (1), and the cleaning mechanism includes a supporting flip frame (7) symmetrically distributed in the front and rear, and the outer ends of the symmetrically arranged supporting flip frames (7) are provided with supporting cleaning frames (8) via bearings, and a magnetic contact plate (23) with intermittently distributed magnetic blocks is fixedly installed on the inner side of the supporting flip frame (7); The cleaning mechanism includes a rotating roller (13), and the rotating roller (13) is rotatably arranged in the upper middle part of the supporting base (1) through a bearing, and the outer wall of the rotating roller (13) is fixedly connected to the inner end of the supporting turning frame (7) at an equal angle, and a cleaning frame (14) is fixedly arranged between the front and rear symmetrical supporting turning frames (7), and the front end of the rotating roller (13) and the driving shaft (11) are connected to each other through a second pulley assembly (21); The cleaning mechanism includes a reciprocating threaded rod (15), and the reciprocating threaded rod (15) is rotatably arranged inside the cleaning frame (14) through a bearing, and the front end of the reciprocating threaded rod (15) and the supporting flip frame (7) are connected to each other through a torsion spring (16), and the rear end of the reciprocating threaded rod (15) is fixedly provided with a driving gear (17), and the front and rear ends of the reciprocating threaded rod (15) are both threadedly connected to the inner end of the telescopic cleaning brush plate (4); The cleaning mechanism includes a main sector gear (18), and the main sector gear (18) is fixedly mounted at the rear of the middle portion of the top surface of the bearing base (1), and the main sector gear (18) is used to mesh and rotate the driving gear (17) driven by the rotating roller (13), and the rotating driving gear (17) and the reciprocating threaded rod (15) are used to drive the threaded telescopic cleaning brush plate (4) to slide inward, and at the same time, the telescopic cleaning brush plate (4) moves to repel the magnetic contact plate (23), so as to intermittently repel the magnetic blocks distributed at equal distances inside the magnetic contact plate (23), so that the telescopic cleaning brush plate (4) can be reciprocated to achieve vibration knocking on the steel bars.

2. The laser straightness detector for building steel bars according to claim 1, characterized in that: The detection mechanism includes a steel bar bearing platform (9), and the steel bar bearing platform (9) is slidably installed on the right side of the top surface of the bearing base (1) in a left-right symmetrical manner, and the steel bar bearing platforms (9) distributed on the left and right are combined to form a semicircular mechanism for preventing the steel bars from rolling and dislocating, and the sliding steel bar bearing platforms (9) are used to move away from each other to cut the steel bars after detecting the straightness.

3. The laser straightness detector for building steel bars according to claim 2, characterized in that: The detection mechanism includes a bidirectional threaded rod (10), and the bidirectional threaded rod (10) is rotatably arranged in front of the top surface of the bearing base (1) through a bearing, and the bidirectional threaded rod (10) is threaded through the front ends of the steel bar bearing platforms (9) on the left and right sides, and the laser transmitter (2) and laser receiver (3) included in the detection mechanism are installed on the front and rear sides of the left end of the bearing base (1).

4. The laser straightness detector for building steel bars according to claim 3, characterized in that: The laser transmitter (2) included in the detection mechanism transmits laser beams distributed at equal angles in the direction of the laser receiver (3), and the bent steel bar blocks the laser receiver (3) from receiving the laser beam, thereby enabling positioning of the bent portion of the steel bar.

5. The laser straightness detector for building steel bars according to claim 1, characterized in that: The conveying mechanism includes a driving shaft (11), and the driving shaft (11) is rotatably arranged on the left and right sides of the bottom surface of the equidistant arrangement frame (5) through bearings, and the middle part of the driving shaft (11) is fixedly connected to the outer wall of the guide turntable (12) in an eccentric manner, and the inner wall of the guide turntable (12) is eccentrically connected to the left and right sides of the bottom surface of the equidistant pushing frame (6) through bearings.

6. The laser straightness detector for building steel bars according to claim 5, characterized in that: The front end of the driving shaft (11) included in the conveying mechanism is connected through a first pulley assembly (22), and the driving shaft (11) and the guide turntable (12) drive the equidistant pushing rack (6) to rotate clockwise in the circumferential direction, so that the equidistant pushing rack (6) can intermittently lift the bottom to transport the steel bars on the top of the equidistant arrangement rack (5) to the right end for loading.

7. The laser straightness detector for building steel bars according to claim 1, characterized in that: The cleaning mechanism includes a support cleaning frame (8) having a guide gear (19) rotatably provided on the upper part thereof via a bearing, and a support sector gear (20) is elastically slidably installed on the upper part thereof on the inner side of the support turning frame (7) included in the cleaning mechanism, and the support cleaning frame (8) relies on its own weight to avoid causing the steel bar to turn over and fall off, and the guide gear (19) inside the support cleaning frame (8) is engaged with the sub-sector gear (20) to drive the steel bar to rotate, and cooperate with the moving telescopic cleaning brush plate (4) to clean foreign matter on the surface of the steel bar.

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