A magnetic particle testing device for a bolt

Abstract

The utility model relates to the technical field of magnetic particle flaw detectors, in particular to a magnetic particle flaw detection device for bolts, including a collection table, and further comprising: a conveyor belt, which is arranged at one end of the collection table, and baffles are fixedly arranged on the left and right sides of the conveyor belt; a flaw detection component, which is fixedly arranged outside the baffle and is used for magnetizing and flaw detecting the bolts; two groups of racks, which are respectively arranged on the inner sides of both sides of the conveyor belt, and gears are arranged on the two groups of racks, and the racks are meshed with the gears; when the conveyor belt is started, it can drive the gears on the telescopic placement rack to rotate, so that the bolts on the telescopic placement rack rotate. The arc-shaped notch on the support plate that fits the size of the bolts and the rolling columns in the notch rotate simultaneously when the gears drive the bolts, making the bolts rotate more smoothly on the telescopic placement rack, enabling the bolts to receive flaw detection in all directions during the conveying process, ensuring no dead angle in detection, and improving the accuracy of detection.

Description

Technical Field

[0001] This utility model relates to the technical field, specifically to a magnetic particle inspection device for bolts. Background Technology

[0002] Magnetic particle testing is a non-destructive testing method that utilizes the distortion of magnetic field lines caused by surface and near-surface defects in ferromagnetic materials, which in turn attracts magnetic particles to form magnetic traces to reveal the defects. For bolts, which are made of ferromagnetic materials, magnetic particle testing has advantages such as high sensitivity for detecting surface and near-surface cracks, simple operation, fast testing speed, and relatively low cost. It can quickly and effectively detect surface and near-surface cracks and other defects in bolts, and has important application value in the quality inspection of bolts.

[0003] Traditional flaw detection methods require multiple inspections at different angles or a combination of different methods to detect defects in bolts with deep holes, blind holes, or grooves on their outer walls. This increases inspection time and workload. This design allows for comprehensive bolt inspection in a single operation, eliminating the need for repeated operations, saving inspection time, improving inspection efficiency, and accelerating the production process. Therefore, we propose a magnetic particle flaw detection device for bolts. Utility Model Content

[0004] One of the technical problems to be solved by this application is: a magnetic particle inspection device for bolts.

[0005] To solve the above technical problems, this application provides a magnetic particle inspection device for bolts, including a collection platform and a conveyor belt, which is disposed at one end of the collection platform and baffles are fixedly disposed on the left and right sides of the conveyor belt.

[0006] The flaw detection assembly is fixedly installed on the outside of the baffle and is used to magnetize and detect flaws in the bolts.

[0007] The rack is provided in two sets, and the two sets of racks are respectively arranged on both sides of the inside of the conveyor belt. Gears are provided on the two sets of racks, and the racks mesh with the gears.

[0008] The telescopic placement rack has a gear located at one end. When the conveyor belt starts, the gear on one side of the telescopic placement rack works with the rack and pinion to drive the objects on the telescopic placement rack to rotate.

[0009] In some embodiments, fixed rods are provided on both the left and right sides of the conveyor belt, the rack is fixedly mounted on the outer wall of the fixed rods, the fixed rods on both sides of the conveyor belt are fixedly connected to both sides of the baffle, and robotic arms are provided on the left and right sides of one end of the baffle.

[0010] In some embodiments, the flaw detection assembly includes a spraying frame, which is an inverted U-shape fixed on both sides of a baffle. A magnetic powder box is fixedly installed directly above the spraying frame. Multiple nozzles are provided inside the spraying frame. A U-shaped plate is fixedly provided on the lower end face of the baffle. A waste magnetic discharge pipe is opened directly below the U-shaped plate. A magnetizing block is provided on the outer side of the conveyor belt.

[0011] In some embodiments, the telescopic placement frame includes a telescopic frame movably mounted on a conveyor belt, and also includes support plates disposed at the left and right ends of the telescopic frame. The upper ends of the two support plates are provided with arc-shaped slots of the size of bolts. A gear is rotatably disposed on one side of the support plate near the rack end, and top plates are fixedly disposed on the left and right sides of the gear.

[0012] In some embodiments, the telescopic frame includes a connecting seat 1 disposed at the center of two support plates. Two connecting rods 1 are rotatably disposed on the outer wall of the connecting seat 1. The two connecting rods 1 are arranged crosswise and rotatably connected by the connecting seat 1. Connecting seats 2 are rotatably disposed at both ends of the two connecting rods 1. Connecting rods 2 are rotatably disposed on the outer wall of the connecting seat 2. Connecting seat 3 is disposed at one end of each connecting rod 2. Fixing blocks are disposed on each connecting seat 3. The fixing blocks are fixedly disposed on the left and right sides of the two support plates.

[0013] In some embodiments, a counterweight is provided at the bottom of the support plate on the side away from the rack, and rolling columns are provided in the arc-shaped grooves of both support plates.

[0014] In some embodiments, a counterweight column is fixedly provided on the lower end face of each of the connecting seats 1, 2 and 3.

[0015] This utility model has at least the following beneficial effects:

[0016] 1. Rotation Detection: The racks and gears on both sides inside the conveyor belt work together. When the conveyor belt starts, they can drive the gears on the telescopic placement frame to rotate, which in turn causes the bolts on the telescopic placement frame to rotate. In addition, the arc-shaped grooves on the support plate that match the size of the bolts and the rolling columns in the grooves rotate simultaneously when the gears drive the bolts, making the bolts rotate more smoothly on the telescopic placement frame. This design allows the bolts to be inspected from all directions during the conveying process, ensuring that there are no blind spots in the inspection, improving the accuracy of the inspection, and helping to find possible defects in various parts of the bolts.

[0017] 2. Adaptability and versatility: The telescopic placement rack adopts a special telescopic frame structure. Through the coordinated work of connecting seat one, connecting rod one, connecting seat two, connecting rod two, and connecting seat three, it can achieve flexible telescopic function. At the same time, a counterweight is set at the bottom of the support plate, which provides basic stable support for the telescopic placement rack. This design can not only stably place bolts, but also adapt to the placement requirements of bolts of different lengths and specifications, thus improving the versatility of the device.

[0018] 3. Stable structure: The lower end faces of connecting seat one, connecting seat two and connecting seat three are all fixed with counterweight columns, which further enhances the structural stability and can effectively reduce the instability caused by the vibration of the conveyor belt. This ensures that the telescopic placement frame always remains stable. During the testing process, the stable placement frame can ensure that the bolts are always in the optimal testing position, thereby improving the accuracy of the testing results. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This utility model Figure 1 Another structural diagram;

[0021] Figure 3 This utility model Figure 1 Top surface structure diagram;

[0022] Figure 4 This is a schematic diagram of the conveyor belt structure of this utility model;

[0023] Figure 5 This utility model Figure 4 Enlarged structural diagram of area A in the middle;

[0024] Figure 6 This is a schematic diagram of the telescopic placement rack structure of this utility model.

[0025] In the diagram: 1. Collection platform; 2. Conveyor belt; 21. Baffle; 3. Sprayer frame; 31. Nozzle; 32. Magnetic powder box; 33. Waste magnetic discharge pipe; 34. U-shaped plate; 4. Magnetized block; 5. Telescopic frame; 6. Robotic arm; 7. Fixed rod; 71. Rack; 8. Top plate; 81. Gear; 9. Support plate; 91. Rolling column; 10. Counterweight; 11. Connecting seat one; 12. Counterweight column; 13. Connecting rod one; 14. Connecting seat two; 15. Connecting rod two; 16. Connecting seat three; 17. Fixed block. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0027] Please see Figures 1-5 This utility model provides a technical solution:

[0028] A magnetic particle inspection device for bolts includes a collection platform 1;

[0029] Conveyor belt 2 is located at one end of collection platform 1. Baffles 21 and flaw detection components are fixedly installed on the left and right sides of conveyor belt 2. They are fixedly installed on the outer side of baffles 21 and are used to magnetize bolts and detect flaws using racks 71. Two sets of racks 71 are provided, and the two sets of racks 71 are respectively located on the inner sides of conveyor belt 2. Gears 81 are provided on the two sets of racks 71, and the racks 71 and gears 81 mesh with a telescopic placement frame. The gears 81 are rotatably located at one end of the telescopic placement frame. When conveyor belt 2 starts, the gears 81 on one side of the telescopic placement frame cooperate with the racks 71 to drive the objects on the telescopic placement frame to rotate. Conveyor belt 2 can continuously transport bolts to the flaw detection area. The flaw detection components can efficiently perform magnetization flaw detection on bolts, and the cooperation between racks 71 and gears 81 ensures that the bolts on the telescopic placement frame achieve stable rotation during the conveying process.

[0030] Fixed rods 7 are provided on both the left and right sides of the conveyor belt 2. The rack 71 is fixedly installed on the outer wall of the fixed rods 7. The fixed rods 7 on both sides of the conveyor belt 2 are fixedly connected to both sides of the baffle 21. The left and right sides of one end of the baffle 21 are provided with robotic arms 6. The fixed rods 7 provide a stable installation base for the rack 71, ensuring that the rack 71 maintains a stable position during the operation of the conveyor belt 2, thereby ensuring smooth meshing and transmission between the gear 81 and the rack 71. At the same time, the introduction of robotic arms 6 can also reduce the errors and uncertainties caused by manual operation.

[0031] The flaw detection assembly includes a spray frame 3, which is an inverted U-shape fixed on both sides of a baffle 21. A magnetic powder box 32 is fixedly installed on the top of the spray frame 3. Multiple nozzles 31 are provided inside the spray frame 3. A U-shaped plate 34 is fixedly installed on the lower end face of the baffle 21. A waste magnetic discharge pipe 33 is opened directly below the U-shaped plate 34. A magnetizing block 4 is provided on the outside of the conveyor belt 2. The inverted U-shaped spray frame 3 can spray magnetic powder from the top and both sides of the bolt simultaneously. With the multiple nozzles 31, uniform coverage of magnetic powder can be achieved. After flaw detection, the magnetic powder mixture with waste magnetic powder will flow along the surface of the bolt into the U-shaped plate 34 on the lower end face of the baffle 21, and then be discharged through the waste magnetic discharge pipe 33. The magnetizing block 4 provided on the outside of the conveyor belt 2 can magnetize the bolt when it passes by, so that the bolt can clearly show internal defects under the action of magnetic powder.

[0032] The telescopic placement frame includes a telescopic frame 5 movably mounted on the conveyor belt 2, and support plates 9 located at both ends of the telescopic frame 5. The upper ends of the two support plates 9 are provided with arc-shaped slots that fit the size of the bolts. A gear 81 is rotatably mounted on one side of the support plate 9 near the rack 71. Top plates 8 are fixedly mounted on both sides of the gear 81. The arc-shaped slots at the upper ends of the support plates 9 fit the bolt size, providing stable support for the bolts and ensuring that they do not shift or fall off during placement and conveying. When the gear 81 rotates, the bolts within the arc-shaped slots can rotate smoothly, ensuring comprehensive flaw detection.

[0033] The telescopic frame 5 includes a connecting seat 11 located at the center of two support plates 9. Two connecting rods 13 are rotatably mounted on the outer wall of the connecting seat 11. The two connecting rods 13 are arranged crosswise and rotatably connected by the connecting seat 11. Connecting seats 2 14 are rotatably mounted at both ends of the two connecting rods 13. Connecting rods 2 15 are rotatably mounted on the outer wall of the connecting seat 2 14. Connecting seat 3 16 is mounted at one end of each connecting rod 2 15. Fixing blocks 17 are mounted on each connecting seat 3 16. Fixing blocks 17 are fixedly mounted on the left and right sides of the two support plates 9. When the length of the telescopic frame needs to be adjusted, the connecting rods 13 and 2 15 can rotate around the connecting seats, causing the support plates 9 to move closer or further apart, thereby adapting to the placement requirements of bolts of different lengths.

[0034] A counterweight 10 is provided at the bottom of the support plate 9 on the side away from the rack 71. Rolling columns 91 are provided in the arc grooves on both support plates 9. When the gear 81 drives the telescopic placement frame to move and the bolt rotates, the counterweight 10 can counteract the unbalanced force caused by the eccentric movement and prevent the telescopic placement frame from tilting or tipping over. When the bolt rotates under the drive of the gear 81, the rolling columns 91 can make the bolt rotate more smoothly.

[0035] In summary, after the device is started, the conveyor belt 2 operates, continuously delivering the bolts from the collection platform 1 to the flaw detection area. The side baffles 21 prevent the bolts from falling off. The flaw detection assembly begins operation; the nozzles 31 on the inverted U-shaped spray frame 3 take powder from the magnetic powder box 32 and spray it evenly onto the bolt surface. The outer magnetizing block 4 magnetizes the bolts, causing internal defects to become visible under the action of the magnetic powder. After flaw detection, the waste magnetic mixture is discharged through the U-shaped plate 34 and the waste magnetic outlet pipe 33. The toothed racks 71 on both sides inside the conveyor belt 2 are fixed to the telescopic placement frame support plate. Gear 81 on one side of 9 meshes, and the operation of conveyor belt 2 drives gear 81 and top plate 8 to rotate, causing the telescopic placement frame to move and the bolt to rotate, realizing all-round flaw detection. The telescopic frame 5 adjusts its length by rotating connecting seat 11, connecting seat 2 14 and connecting seat 3 16 and connecting rod 1 13 and connecting rod 2 15 to adapt to different bolts. Counterweight 10, counterweight column 12 and rolling column 91 stabilize the telescopic frame 5 and assist the bolt to rotate. The robotic arm 6 accurately feeds materials, ensuring a smooth process and reducing human error. Example

[0036] Please see Figure 6 The main structure of Embodiment 1 is the same as that of Embodiment 2. The difference is that the lower end face of the connecting seat 11, connecting seat 2 14 and connecting seat 3 16 are all fixedly provided with counterweight column 12. During the extension and retraction process, the counterweight column 12 can improve the stability of the center of gravity of the entire structure, ensure that the arc groove on the support plate 9 steadily supports the bolt, and the rolling column 91 in the groove operates normally without hindering the bolt's rotation.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A magnetic particle inspection device for bolts, comprising a collection platform (1), characterized in that: It also includes: Conveyor belt (2), the conveyor belt (2) is set at one end of the collection platform (1), and baffles (21) are fixedly set on the left and right sides of the conveyor belt (2). The flaw detection assembly is fixedly installed on the outside of the baffle (21) and is used to magnetize and detect flaws in the bolts; The rack (71) is provided in two sets, and the two sets of racks (71) are respectively provided on both sides of the inside of the conveyor belt (2). The two sets of racks (71) are provided with gears (81), and the racks (71) mesh with the gears (81). The telescopic placement rack has a gear (81) rotating at one end. When the conveyor belt (2) starts, the gear (81) on one side of the telescopic placement rack works with the rack (71) to drive the object on the telescopic placement rack to rotate.

2. The magnetic particle inspection device for bolts according to claim 1, characterized in that: Fixed rods (7) are provided on both the left and right sides of the conveyor belt (2). The rack (71) is fixedly installed on the outer wall of the fixed rod (7). The fixed rods (7) on both sides of the conveyor belt (2) are fixedly connected to both sides of the baffle (21). Mechanical arms (6) are provided on the left and right sides of one end of the baffle (21).

3. The magnetic particle inspection device for bolts according to claim 1, characterized in that: The flaw detection assembly includes a spray frame (3), which is an inverted U-shaped fixed on both sides of a baffle (21). A magnetic powder box (32) is fixedly installed on the top of the spray frame (3). Multiple nozzles (31) are provided inside the spray frame (3). A U-shaped plate (34) is fixedly provided on the lower end face of the baffle (21). A waste magnetic outlet pipe (33) is opened directly below the U-shaped plate (34). A magnetizing block (4) is provided on the outside of the conveyor belt (2).

4. The magnetic particle inspection device for bolts according to claim 1, characterized in that: The telescopic placement frame includes a telescopic frame (5) movably mounted on the conveyor belt (2), and also includes support plates (9) set at the left and right ends of the telescopic frame (5). The upper ends of the two support plates (9) are provided with arc-shaped slots that fit the size of bolts. A gear (81) is rotatably provided on one side of the support plate (9) near the rack (71). Top plates (8) are fixedly provided on the left and right sides of the gear (81).

5. The magnetic particle inspection device for bolts according to claim 4, characterized in that: The telescopic frame (5) includes a connecting seat 1 (11) located at the center of two support plates (9). Two connecting rods 1 (13) are rotatably arranged on the outer wall of the connecting seat 1 (11). The two connecting rods 1 (13) are arranged crosswise and rotatably connected by the connecting seat 1 (11). Connecting seat 2 (14) is rotatably arranged at both ends of the two connecting rods 1 (13). Connecting rod 2 (15) is rotatably arranged on the outer wall of the connecting seat 2 (14). Connecting seat 3 (16) is arranged at one end of the connecting rod 2 (15). Fixing block (17) is arranged on the connecting seat 3 (16). Fixing block (17) is fixedly arranged on the left and right sides of the two support plates (9).

6. The magnetic particle inspection device for bolts according to claim 4, characterized in that: A counterweight (10) is provided at the bottom of the support plate (9) on the side away from the rack (71), and a rolling column (91) is provided in the arc groove on both support plates (9).

7. The magnetic particle inspection device for bolts according to claim 5, characterized in that: The lower end faces of the connecting seat one (11), connecting seat two (14) and connecting seat three (16) are all fixedly provided with counterweight columns (12).

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