Fatigue crack detection device for beam-column joint of building steel structure

Abstract

The utility model discloses a building steel structure beam column joint fatigue crack detection device, which comprises a moving seat, two sides of the moving seat are provided with sliding chutes, the two sliding chutes are internally provided with L-shaped plates in a sliding fit manner, one end of each L-shaped plate is elastically matched with one side of the inner wall of the corresponding sliding chute, a moving mechanism is arranged in the moving seat, the L-shaped plates are internally provided with two limiting grooves, and the limiting grooves are arranged in the L-shaped plates. Moving blocks are arranged in the two limiting grooves in a sliding fit mode, and rolling wheels are arranged on one sides of the moving blocks in a rotating fit mode. Fixing boxes are installed on the two opposite sides of the two L-shaped plates correspondingly, a detector is slidably matched with one side of each fixing box, a rotating rod is rotationally matched with the interior of each fixing box, and a cleaning roller is clamped and matched with one end of each rotating rod. According to the utility model, through the arrangement of the cleaning roller, the cleaning roller can clean the surface of the steel structure beam column, and the rotating rod rotates to drive the cleaning roller to be attached to the surface of the steel structure beam column, so that sundries and dust can be cleaned before detection, and the influence of the sundries and dust on detection data of the detector is reduced.

Description

Technical Field

[0001] This utility model relates to the field of steel structure beam and column testing technology, specifically to a fatigue crack detection device for beam and column joints in building steel structures. Background Technology

[0002] Steel beams are one of the most common and important components in building structures, used to bear the weight of the building itself and external loads. Steel beams have advantages such as high strength, high rigidity, light weight, and convenient construction, and are widely used in various types of buildings. Steel beam inspection refers to the process of measuring the deformation of steel beams in building structures. This inspection is usually used to assess changes in the stability, safety, and structural health of the structure.

[0003] Currently, steel structure beams and columns are usually inspected using lasers or cameras. This requires the steel structure beams and columns to be kept clean. If there is debris or dust on the surface, it will affect the inspection data and may even damage the detector in severe cases. Without protection for the detector, there is an urgent need to design a fatigue crack detection device for the joints of building steel structure beams and columns to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a fatigue crack detection device for beam-column joints in building steel structures, so as to solve the above-mentioned shortcomings in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A fatigue crack detection device for beam-column joints in a building steel structure includes a movable base. Slide grooves are provided on both sides of the movable base. L-shaped plates are slidably fitted within each of the two slide grooves. One end of each L-shaped plate is elastically fitted to one side of the inner wall of the slide groove. A moving mechanism is provided within the movable base. Two limiting grooves are provided within each L-shaped plate. Moving blocks are slidably fitted within each of the two limiting grooves. A roller is rotatably fitted to one side of each moving block. An adjustment mechanism is provided between the two moving blocks on the same side. The moving blocks within the two L-shaped plates are symmetrically arranged. Fixed boxes are installed on opposite sides of the two L-shaped plates. A detector is slidably fitted to one side of each fixed box. A rotating rod is rotatably fitted within each fixed box. A cleaning roller is engaged at one end of the rotating rod. A protective cover corresponding to the detector is rotatably fitted to one side of each fixed box. One end of the protective cover is engaged with one side of the fixed box.

[0007] Furthermore, a through groove is provided on the top of the movable seat, and the moving mechanism includes a movable wheel that rotates in the through groove and a motor installed in the movable seat, the output end of the motor being connected to the shaft of the movable wheel.

[0008] Furthermore, a groove is provided at one end of the L-shaped plate, and a first spring is installed in the groove. One end of the first spring is connected to one side of the inner wall of the groove.

[0009] Furthermore, a second spring is installed between the moving block and the limiting groove. The adjusting mechanism includes two rotating plates that are rotatably engaged at one end of the two moving blocks on the same side. One end of the two rotating plates is rotatably engaged, and one end of one rotating plate is provided with an adjusting bolt corresponding to one end of the other rotating plate.

[0010] Furthermore, the rotating rod is L-shaped, and a fixing clamp is provided at one end of the rotating rod. The fixing clamp is engaged with the shaft of the cleaning roller, and the cleaning roller is rotatably engaged within the fixing clamp.

[0011] Furthermore, a torsion spring is provided between one end of the protective cover and the fixing box, a stop block is provided at one end of the protective cover, and a rounded corner is provided at one end of the stop block. The stop block abuts against the side of the detector located inside the fixing box, and an elastic card is installed on one side of the fixing box to engage with the protective cover.

[0012] In the above technical solution, the fatigue crack detection device for beam-column joints of building steel structures provided by this utility model has the following beneficial effects:

[0013] The cleaning rollers can clean the surface of the steel structure beams and columns. The rotating rod drives the cleaning rollers to fit against the surface of the steel structure beams and columns, thus removing debris and dust before testing and reducing the impact of debris and dust on the detector's data. The protective cover protects the detector. In the event of a collision with debris, the protective cover will rotate first, covering the detector and reducing the risk of damage. When not in use, the protective cover can be locked in place to shield and protect the detector. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0015] Figure 1 This is a schematic diagram of the structure of a fatigue crack detection device for beam-column joints in a building steel structure, as provided in an embodiment of this utility model.

[0016] Figure 2This is a schematic diagram of the moving mechanism structure provided in an embodiment of the fatigue crack detection device for beam-column joints of a building steel structure according to this utility model.

[0017] Figure 3 This is a schematic diagram of the adjustment mechanism provided in an embodiment of the fatigue crack detection device for beam-column joints of a building steel structure according to this utility model.

[0018] Figure 4 This is a schematic diagram of the protective cover structure provided in an embodiment of the fatigue crack detection device for beam-column joints of a building steel structure according to this utility model.

[0019] 1. Movable seat; 2. Slide groove; 3. L-shaped plate; 4. Movable mechanism; 5. Limiting groove; 6. Movable block; 7. Roller; 8. Adjustment mechanism; 9. Fixing box; 10. Detector; 11. Rotating rod; 12. Cleaning roller; 13. Protective cover; 14. Through groove; 15. Movable wheel; 16. Motor; 17. Groove; 18. First spring; 19. Second spring; 20. Rotating plate; 21. Adjusting bolt; 22. Fixing clamp; 23. Torsion spring; 24. Abutment block; 25. Elastic clamping plate. Detailed Implementation

[0020] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0021] like Figure 1-4 As shown in the figure, this utility model provides a fatigue crack detection device for beam-column joints in building steel structures.

[0022] The device includes a movable base 1, with sliding grooves 2 on both sides. L-shaped plates 3 are slidably fitted within each of the two sliding grooves 2, with one end of each L-shaped plate 3 elastically fitted to one side of the inner wall of the sliding groove 2. A moving mechanism 4 is installed inside the movable base 1. Two limiting grooves 5 are opened within each L-shaped plate 3, with moving blocks 6 slidably fitted within each of the two limiting grooves 5. A roller 7 is rotatably fitted to one side of each moving block 6. An adjustment mechanism 8 is provided between the two moving blocks 6 on the same side. The moving blocks 6 within the two L-shaped plates 3 are symmetrically arranged. Fixed boxes 9 are installed on opposite sides of the two L-shaped plates 3. A detector 10 is slidably fitted to one side of each fixed box 9. A rotating rod 11 is rotatably fitted inside each fixed box 9, with one end of the rotating rod 11 engaging with a cleaning roller 12. A protective cover 13 corresponding to the detector 10 is rotatably fitted to one side of each fixed box 9, with one end of the protective cover 13 engaging with one side of the fixed box 9.

[0023] Reference Figure 2In this embodiment, the top of the movable base 1 is provided with a through groove 14. The moving mechanism 4 includes a movable wheel 15 rotatably engaged in the through groove 14 and a motor 16 installed in the movable base 1. The output end of the motor 16 is connected to the shaft of the movable wheel 15. The movable wheel 15 can be made to fit against the steel structure beams and columns. Starting the motor 16 can drive the movable wheel 15 to rotate, so that the movable wheel 15 drives the movable base 1 to move.

[0024] Reference Figure 2 In this embodiment, one end of the L-shaped plate 3 is provided with a groove 17, and a first spring 18 is installed in the groove 17. One end of the first spring 18 is connected to one side of the inner wall of the slide groove 2. Through the groove 17, when one end of the L-shaped plate 3 moves into the slide groove 2, the first spring 18 will be received in the groove 17. When the L-shaped plate 3 is pulled out of the slide groove 2, the first spring 18 can be moved out of the groove 17, which has the effect of storing the first spring 18.

[0025] Reference Figure 3 In this embodiment, a second spring 19 is installed between the moving block 6 and the limiting groove 5. The adjusting mechanism 8 includes two rotating plates 20 that are rotatably engaged with one end of the two moving blocks 6 on the same side. One end of the two rotating plates 20 is rotatably engaged, and one end of one rotating plate 20 is provided with an adjusting bolt 21 corresponding to one end of the other rotating plate 20. By pressing the two rotating plates 20, the two rotating plates 20 can drive the two moving blocks 6 to move closer to each other, allowing the two moving blocks 6 to drive the two rollers 7 to move closer to each other, so that the two rollers 7 can enter the steel structure beam and column. When the two rotating plates 20 are released, the second spring 19 will drive the moving blocks 6 to move, so that the two rollers 7 abut against the bottom of the inner wall of the steel structure beam and column, respectively. Then, the adjusting bolt 21 is rotated to fix the two rotating plates 20, thus fixing the distance between the two moving blocks 6.

[0026] Reference Figure 4 In this embodiment, the rotating rod 11 is L-shaped, and a fixing clip 22 is provided at one end of the rotating rod 11. The fixing clip 22 is engaged with the shaft of the cleaning roller 12, and the cleaning roller 12 is rotatably engaged within the fixing clip 22. Through the fixing clip 22, the cleaning roller 12 of the corresponding length can be replaced as needed, or the old cleaning roller 12 can be replaced.

[0027] Reference Figure 4In this embodiment, a torsion spring 23 is provided between one end of the protective cover 13 and the fixing box 9. A stop block 24 is provided at one end of the protective cover 13, and one end of the stop block 24 is rounded. The stop block 24 abuts against the side of the detector 10 located inside the fixing box 9. An elastic locking plate 25 is installed on one side of the fixing box 9 to engage with the protective cover 13. With the stop block 24, when the protective cover 13 rotates to cover the detector 10, the detector 10 will move into the fixing box 9. When the torsion spring 23 drives the protective cover 13 to rotate and open, the protective cover 13 drives the stop block 24 to move, so that the stop block 24 squeezes the detector 10 out of the fixing box 9. The elastic locking plate 25 can fix the protective cover 13, so that the protective cover 13 completely covers the detector 10. This is used when the device is stored.

[0028] Working principle: In use, first place the device on the steel structure beam and column. While adjusting the two adjustment mechanisms 8, pull the two L-shaped plates 3 away from each other. Then, the moving mechanism 4 inside the moving seat 1 will contact the steel structure beam and column. After determining the position, slowly release the two pulled L-shaped plates 3. The two L-shaped plates 3 will move closer together due to elasticity, causing the rollers 7 to enter the side of the steel structure beam and column. Then, adjust the adjustment mechanism 8 to move the two moving blocks 6, so that the two moving blocks 6 drive the two rollers 7 to move, so that the two rollers 7 abut against the bottom of the inner wall of the steel structure beam and column respectively. After abutting, adjust the adjustment mechanism 8 to fix the position of the rollers 7. At this time, the device is fixed to the steel structure beam and column, and the detector 10 is also in contact with the steel structure beam and column. The inner walls of the structural beams and columns correspond to each other. The above adjustment method can be used to fix steel structural beams and columns of different sizes. Then, the moving mechanism 4 is started to drive the moving seat 1 to move, so that the moving seat 1 drives the two L-shaped plates 3 to move. The L-shaped plates 3 will drive the fixing box 9 and the detector 10 to move, so that the detector 10 can perform detection. At the same time as the fixing box 9 moves, it will also drive the rotating rod 11 to move, so that the rotating rod 11 rotates and drives the cleaning roller 12 to stick to the surface of the steel structural beam and column, so that the cleaning roller 12 cleans the surface of the steel structural beam and column. When encountering debris, the cleaning roller 12 will push the rotating rod 11 to rotate, so that the other end of the rotating rod 11 abuts against the steel structural beam and column. The protective cover 13 will also shield and protect the detector 10.

[0029] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A fatigue crack detection device for beam-column joints in building steel structures, comprising a movable base (1), characterized in that, The movable seat (1) has sliding grooves (2) on both sides, and L-shaped plates (3) are slidably fitted in both sliding grooves (2). One end of the L-shaped plate (3) is elastically fitted with one side of the inner wall of the sliding groove (2). The movable seat (1) is provided with a moving mechanism (4). The L-shaped plate (3) has two limiting grooves (5). The two limiting grooves (5) are slidably fitted with moving blocks (6). One side of the moving block (6) is rotatably fitted with a roller (7). An adjustment mechanism (8) is provided between the two moving blocks (6) on the same side. The moving blocks (6) inside the L-shaped plate (3) are arranged symmetrically; a fixed box (9) is installed on each of the two L-shaped plates (3) on opposite sides. A detector (10) is slidably fitted on one side of the fixed box (9). A rotating rod (11) is rotatably fitted inside the fixed box (9). A cleaning roller (12) is snapped into one end of the rotating rod (11). A protective cover (13) corresponding to the detector (10) is rotatably fitted on one side of the fixed box (9). One end of the protective cover (13) is snapped into one side of the fixed box (9).

2. The fatigue crack detection device for beam-column joints of building steel structures according to claim 1, characterized in that, The top of the movable seat (1) is provided with a through groove (14), and the moving mechanism (4) includes a movable wheel (15) rotatably engaged in the through groove (14) and a motor (16) installed in the movable seat (1). The output end of the motor (16) is connected to the axis of the movable wheel (15).

3. The fatigue crack detection device for beam-column joints of building steel structures according to claim 1, characterized in that, One end of the L-shaped plate (3) is provided with a groove (17), and a first spring (18) is installed in the groove (17). One end of the first spring (18) is connected to one side of the inner wall of the slide (2).

4. The fatigue crack detection device for beam-column joints of building steel structures according to claim 1, characterized in that, A second spring (19) is installed between the moving block (6) and the limiting groove (5). The adjusting mechanism (8) includes two rotating plates (20) that are rotatably engaged with one end of the two moving blocks (6) on the same side. One end of the two rotating plates (20) is rotatably engaged, and one end of one of the rotating plates (20) is provided with an adjusting bolt (21) corresponding to one end of the other rotating plate (20).

5. The fatigue crack detection device for beam-column joints of building steel structures according to claim 1, characterized in that, The rotating rod (11) is L-shaped, and a fixing clip (22) is provided at one end of the rotating rod (11). The fixing clip (22) is engaged with the shaft of the cleaning roller (12), and the cleaning roller (12) is rotatably engaged in the fixing clip (22).

6. The apparatus for detecting fatigue cracks of a beam-column joint of a building steel structure according to claim 1, wherein A torsion spring (23) is provided between one end of the protective cover (13) and the fixing box (9). A stop block (24) is provided at one end of the protective cover (13). One end of the stop block (24) is rounded. The stop block (24) abuts against the side of the detector (10) located inside the fixing box (9). An elastic card plate (25) that engages with the protective cover (13) is installed on one side of the fixing box (9).

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