Hexagon nut accessory detection device for rail transit vehicle

Abstract

This invention relates to the field of hexagonal nut detection technology, specifically a hexagonal nut accessory detection device for rail transit vehicles. The device includes a main body with a vertical plate fixedly connected to it. A first visual intelligent sensor and a second visual intelligent sensor are fixedly connected to the vertical plate. This invention, through the coordinated operation of an electric rod, a drive component, and a wedge-shaped component, can automatically control the quantitative dripping of cleaning fluid onto the upper surface of a glass plate. A dynamically retractable dust-free cloth strip is used to wipe the upper and lower surfaces of the glass plate, achieving wet wiping of oil stains and stubborn dirt from the upper surface. Subsequent dry wiping removes residual water stains. Simultaneously, a normal negative pressure suction structure is equipped to remove loose debris and debris from the upper and lower sides of the glass plate in real time, effectively preventing metal debris, burrs, oil stains, and dust from obstructing the imaging optical paths of the first and second visual intelligent sensors.

Description

Technical Field

[0001] This invention relates to the field of hexagonal nut testing technology, specifically a testing device for hexagonal nut accessories in rail transit vehicles. Background Technology

[0002] Hexagonal nuts for rail transit vehicles are standardized fasteners specifically designed for rail transit equipment such as railway locomotives, EMUs, and urban rail trains. They generate preload by engaging with the threads of bolts and screws, ensuring reliable connections for key components such as the car body structure, bogies, braking systems, and traction equipment. They are one of the core basic components that ensure safe vehicle operation.

[0003] Before leaving the factory, hexagonal nuts used in rail transit vehicles need to undergo intelligent inspection for appearance, dimensions, and internal thread defects. Existing inspection equipment mostly uses a glass turntable to carry and transport the hexagonal nuts, and is equipped with two sets of intelligent sensors arranged at the top and bottom to achieve visual imaging inspection of the upper and lower end faces of the nuts and the internal thread holes. Existing inspection devices lack a systematic automatic cleaning mechanism for the glass turntable. During long-term continuous operation, the surface of the glass turntable is prone to residual metal shavings, edge burrs, and rust-preventive oil stains generated during the processing of hexagonal nuts. If the stains are not cleaned, various stains and debris will not only form false defect spots in the visual imaging and obscure the true defect features of the nuts, but also interfere with the backlight transmission light path, which can easily cause false detection and missed detection in intelligent inspection. Summary of the Invention

[0004] The purpose of this invention is to provide a detection device for hexagonal nut accessories of rail transit vehicles, in order to solve the problem mentioned in the background art that the existing detection devices lack a systematic automatic cleaning mechanism for the glass turntable. During long-term continuous operation, the surface of the glass turntable is prone to residual metal shavings, edge burrs and anti-rust oil stains generated during the processing of hexagonal nuts. Various stains and debris not only form false defect spots in visual imaging and obscure the real defect features of the nuts, but also interfere with the backlight transmission path, which can easily cause the problem of false detection and missed detection in intelligent detection.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a detection device for hexagonal nut accessories of rail transit vehicles, comprising a main body, a vertical plate fixedly connected to the main body, a first visual intelligent sensor and a second visual intelligent sensor fixedly connected to the vertical plate, each of the first and second visual intelligent sensors being equipped with a lens, an electric rotating shaft fixedly connected to the main body, a connecting member mounted on the electric rotating shaft, a glass plate fixedly connected to the end of the connecting member, a double-sided cleaning mechanism provided on the main body, the double-sided cleaning mechanism including a slide rail opened on the side of the main body, a driving member slidably connected inside the slide rail, a crossbeam fixedly connected to both sides of the driving member, two rotating rollers rotatably connected to the crossbeams, an unwinding roller and a winding roller rotatably connected to both sides of the crossbeams respectively, a first sleeve mounted on the unwinding roller, a dust-free cloth strip mounted on the first sleeve, a second sleeve mounted on the winding roller, the dust-free cloth strip being connected to the second sleeve after contacting the two rotating rollers, and a gear fixedly connected to the end of the winding roller.

[0006] Preferably, a drive motor is fixedly connected to the side of the driving component, a worm gear is fixedly connected to the output end of the drive motor, and the upper and lower sides of the worm gear mesh with corresponding gears respectively. A side plate is fixedly connected to the side of the driving component, a wedge-shaped component is fixedly connected to the side plate, a liquid storage cylinder is fixedly connected to the main body of the equipment, a flow box is connected inside the liquid storage cylinder, a horizontal pipe is connected to the flow box, and multiple branch pipes are connected inside the horizontal pipe.

[0007] Preferably, a sliding plate is slidably connected through the interior of the circulation box, the sliding plate has a round hole, a tension spring is fixedly connected to the end of the sliding plate, and the end of the tension spring away from the sliding plate is fixedly connected to the outer wall of the circulation box.

[0008] Preferably, the bottom of the skateboard is rotatably connected to a pivot, a vertical plate is fixedly connected to the pivot, and a blocking member is fixedly connected to the outer side wall of the skateboard, the blocking member contacting the vertical plate.

[0009] Preferably, a dust collection box is fixedly connected to the driving component, a suction pump is installed inside the dust collection box, and a dust collection mechanism is installed on the dust collection box.

[0010] Preferably, the dust collection mechanism includes a suction tube connected to the dust collection box, and a dust collection head is connected to the end of the suction tube. The dust collection head has a first suction port and a second suction port.

[0011] Preferably, a jet box is fixedly connected to the main body of the device, a first nozzle and a second nozzle are connected to the jet box, and a high-pressure air pump is installed inside the jet box.

[0012] Preferably, two storage bins are fixedly connected to the side of the main body of the equipment, and each of the two storage bins is provided with a silicone contact plate inside.

[0013] Preferably, a bracket is fixedly connected to the main body of the equipment, an electric rod is fixedly connected to the bracket, and the electric rod is fixedly connected to the driving component.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention, through the coordinated operation of an electric rod, a drive component, and a wedge-shaped component, can automatically control the quantitative dripping of cleaning fluid onto the upper surface of a glass disk. A dynamically retractable, dust-free cloth strip is then used to wipe the upper and lower surfaces of the glass disk. The upper surface is wet-wiped to remove oil stains and stubborn dirt, followed by dry wiping to remove residual water. Simultaneously, a constant negative pressure suction structure is provided to remove loose debris and impurities from both sides of the glass disk in real time. This effectively prevents metal debris, burrs, oil stains, and dust from obstructing the imaging optical paths of the first and second vision intelligent sensors, thus avoiding false detection spots. This ensures the accuracy of detecting defects in the hexagonal nut's contour, end face, and internal thread from a hardware perspective.

[0015] 2. While cleaning the glass plate, this equipment can simultaneously move the suction head to ensure that the first and second suction ports are precisely close to the lens surfaces of the first and second vision intelligent sensors. Relying on negative pressure adsorption, it removes dust and floating debris from the lens surface in real time, eliminating problems such as dust accumulation blocking light and diffuse reflection spots. This avoids false detections and missed detections caused by dust obstructing the imaging field of view. There is no need for manual disassembly and wiping of the sensor lenses. The lens dust removal can be completed simultaneously with the equipment cleaning process, greatly reducing the frequency of manual maintenance and continuously stabilizing the image recognition clarity and defect detection reliability of the two sets of intelligent sensors. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the top surface structure of the present invention; Figure 4 This is a schematic diagram of the cross-sectional structure of the present invention; Figure 5 This is a partial structural diagram of the present invention. Figure 1 ; Figure 6 for Figure 5 Enlarged view of A in the middle; Figure 7 This is a schematic diagram of the wedge-shaped component structure of the present invention; Figure 8This is a schematic diagram of the flow box structure of the present invention. Figure 1 ; Figure 9 This is a schematic diagram of the flow box structure of the present invention. Figure 2 ; Figure 10 This is a side view of the present invention; Figure 11 This is a schematic diagram of the structure of the first visual intelligent sensor and the second visual intelligent sensor of the present invention; Figure 12 This is a partial structural diagram of the present invention. Figure 2 ; Figure 13 This is a schematic diagram of the vacuum head structure of the present invention. Figure 1 ; Figure 14 This is a schematic diagram of the vacuum head structure of the present invention. Figure 2 .

[0017] In the attached diagram, the components represented by each number are as follows: 1. Main body of the equipment; 2. Electric rotating shaft; 3. Connecting parts; 4. Glass tray; 5. Electric rod; 6. Support frame; 7. Air jet box; 8. First nozzle; 9. Second nozzle; 10. Storage bin; 11. Slide rail; 12. Driving component; 13. First suction port; 14. Second suction port; 15. Drive motor; 16. Worm gear; 17. First sleeve; 18. Unwinding roller; 19. Rewinding roller; 20. Second sleeve; 21. Gear ; 22. Horizontal frame; 23. Rotary roller; 24. Dust-free cloth strip; 25. Liquid storage cylinder; 26. Horizontal tube; 27. Side plate; 28. Wedge-shaped component; 29. ​​Flow box; 30. Branch pipe; 31. Vertical plate; 32. Blocking component; 33. Round hole; 34. Slide plate; 35. Tension spring; 36. Dust collection box; 37. Suction hard pipe; 38. Suction head; 39. Vertical plate; 40. Second vision intelligent sensor; 41. First vision intelligent sensor. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Example 1: Please refer to Figure 1 - Figure 14A detection device for hexagonal nut accessories of rail transit vehicles includes a main body 1. A vertical plate 39 is fixedly connected to the main body 1. A first visual intelligent sensor 41 and a second visual intelligent sensor 40 are fixedly connected to the vertical plate 39. Both the first visual intelligent sensor 41 and the second visual intelligent sensor 40 are equipped with lenses. An electric rotating shaft 2 is fixedly connected to the main body 1. A connector 3 is installed on the electric rotating shaft 2. A glass plate 4 is fixedly connected to the end of the connector 3. A double-sided cleaning mechanism is provided on the main body 1. The double-sided cleaning mechanism includes a section opened in... The main body 1 of the equipment has a slide rail 11 on its side. The slide rail 11 is slidably connected to a drive component 12. Both sides of the drive component 12 are fixedly connected to a cross frame 22. Two rotating rollers 23 are rotatably connected to the cross frame 22. The two sides of the cross frame 22 are respectively rotatably connected to an unwinding roller 18 and a winding roller 19. A first sleeve 17 is installed on the unwinding roller 18. A dust-free cloth strip 24 is provided on the first sleeve 17. A second sleeve 20 is installed on the winding roller 19. After the dust-free cloth strip 24 contacts the two rotating rollers 23, it is connected to the second sleeve 20. A gear 21 is fixedly connected to the end of the winding roller 19.

[0020] A drive motor 15 is fixedly connected to the side of the drive component 12. A worm gear 16 is fixedly connected to the output end of the drive motor 15. The upper and lower sides of the worm gear 16 mesh with corresponding gears 21. A side plate 27 is fixedly connected to the side of the drive component 12. A wedge-shaped piece 28 is fixedly connected to the side plate 27. A liquid storage cylinder 25 is fixedly connected to the main body of the equipment 1. A flow box 29 is connected inside the liquid storage cylinder 25. A horizontal pipe 26 is connected to the flow box 29. Multiple branch pipes 30 are connected inside the horizontal pipe 26.

[0021] The inside of the circulation box 29 is slidably connected to a slide plate 34. A round hole 33 is provided on the slide plate 34. A tension spring 35 is fixedly connected to the end of the slide plate 34. The end of the tension spring 35 away from the slide plate 34 is fixedly connected to the outer wall of the circulation box 29.

[0022] The bottom of the skateboard 34 is rotatably connected to a pivot, and a vertical plate 31 is fixedly connected to the pivot. A blocking member 32 is fixedly connected to the outer side wall of the skateboard 34, and the blocking member 32 is in contact with the vertical plate 31.

[0023] A dust collection box 36 is fixedly connected to the drive component 12. A suction pump is installed inside the dust collection box 36, and a dust collection mechanism is installed on the dust collection box 36.

[0024] In this embodiment, when the device is working, the hexagonal nut to be inspected can be placed on the glass disk 4 with the help of an external conveying device. After the hexagonal nut falls onto the surface of the glass disk 4, the electric rotating shaft 2 drives the glass disk 4 to rotate through the connecting piece 3 (this is prior art and will not be elaborated further). When the hexagonal nut, which is synchronously transported with the glass disk 4, rotates to a position directly below the first visual intelligent sensor 41, the first visual intelligent sensor 41 starts the image recognition detection operation to perform all-round visual imaging defect detection on the upper end face and the middle threaded hole of the hexagonal nut. When the glass disk 4 carrying the hexagonal nut continues to rotate, causing the hexagonal nut to move to a position directly above the second visual intelligent sensor 40, the second visual intelligent sensor 40 completes the visual imaging detection of the lower end face of the hexagonal nut through the transparent glass disk 4, realizing full-coverage intelligent recognition detection of the upper and lower end faces, outer contour and internal threaded hole of the hexagonal nut (this is prior art and will not be elaborated further).

[0025] After the hexagonal nuts on the glass tray 4 have completed the detection process by the first visual intelligent sensor 41 and the second visual intelligent sensor 40, they continue to rotate and transfer with the glass tray 4. When the hexagonal nuts rotate to the side detection and sorting station of the air jet box 7, if the first visual intelligent sensor 41 and the second visual intelligent sensor 40 determine that the hexagonal nuts are qualified products, the high-pressure air pump in the air jet box 7 sprays high-pressure airflow through the first nozzle 8 to blow the qualified hexagonal nuts into the storage box 10 corresponding to the first nozzle 8. Conversely, if the detection determines that the hexagonal nuts are unqualified products, the second nozzle 9 sprays high-pressure airflow to blow the unqualified hexagonal nuts into the storage box 10 corresponding to it, thus completing the automatic sorting and storage of qualified and unqualified products.

[0026] While the first visual intelligent sensor 41 and the second visual intelligent sensor 40 perform image recognition and detection on the hexagonal nut, the suction pump inside the dust collection box 36 starts simultaneously. It connects to the suction head 38 via the suction pipe 37, and uses the first suction port 13 and the second suction port 14 on the suction head 38 to perform negative pressure suction on the upper and lower sides of the glass plate 4, respectively. This removes metal shavings and burrs from the nuts adhering to the upper surface of the glass plate 4, and external dust and other debris from the lower surface. With continuous long-term detection operations, the glass plate... The upper surface of the glass plate 4 in contact with the hexagonal nut is prone to residues such as rust-preventive oil stains generated during nut processing. These stains can directly block the imaging light path, forming false defect spots and interfering with the image recognition accuracy and size detection accuracy of the first vision intelligent sensor 41 and the second vision intelligent sensor 40. At this time, the feeding of the hexagonal nut onto the glass plate 4 can be paused. When there is no workpiece on the surface of the glass plate 4, the electric rod 5 is controlled to extend. During the extension process, the electric rod 5 pushes the drive component 12 to move linearly along the slide rail 11 towards the glass plate 4.

[0027] When the drive component 12 moves toward the glass disk 4, the inclined surface of the wedge-shaped component 28 installed on the drive component 12 contacts the bottom end of the vertical plate 31. The wedge-shaped component 28 continuously pushes the vertical plate 31 and overcomes the tension of the tension spring 35 to lift the vertical plate 31 upward. This causes the round hole 33 on the slide plate 34, which was originally located outside the flow box 29, to rise and align into the flow box 29. After the round hole 33 enters the flow box 29's guiding channel, the cleaning fluid stored inside the liquid storage cylinder 25 can flow into the horizontal tube 26 through the flow box 29 and the round hole 33. Then, it is evenly dripped onto the upper surface of the rotating glass disk 4 through the multiple branch pipes 30 connected by the horizontal tube 26. A uniform cleaning liquid wetting layer is formed on the surface until the drive component 12 moves to the maximum stroke position. When the drive component 12 moves to the maximum stroke, the wedge 28 disengages from the contact limit with the upright plate 31. At this time, under the elastic reset pulling force of the tension spring 35, the slide plate 34 falls back to the initial position. The solid part of the slide plate 34 without the round hole 33 re-blocks and isolates the internal channel of the flow box 29. The horizontal pipe 26 stops dripping cleaning liquid onto the upper surface of the glass plate 4 through the branch pipe 30. At the same time, the horizontal frame 22 is in place synchronously with the drive component 12, and the two taut clean cloth strips 24 are in close contact with the upper and lower surfaces of the glass plate 4 respectively.

[0028] Then, the drive motor 15 is started, and the output end of the drive motor 15 drives the worm gear 16 to rotate. The upper and lower sides of the worm gear 16 respectively mesh with the corresponding gears 21 for transmission. During the rotation of the worm gear 16, the take-up roller 19 is driven to rotate through the gears 21. The take-up roller 19, together with the second sleeve 20, performs the take-up operation on the cleanroom cloth strip 24. The take-up of the cleanroom cloth strip 24 pulls the unwind roller 18 and the first sleeve 17 to rotate synchronously. During this operation, the contact position between the cleanroom cloth strip 24 and the surface of the glass plate 4 is continuously and dynamically changed, always keeping the cleanroom cloth strip 24 in contact with the surface of the glass plate 4 for wiping, avoiding repeated wiping of the glass plate 4 surface by the cleanroom cloth strip 24 and causing cross-contamination of stains (it should be noted that the cleanroom cloth strip 24 on the upper side will be sprayed onto the glass). The cleaning fluid on the upper surface of the glass disk 4 cleans the upper surface of the glass disk 4, while the lint-free cloth strip 24 on the lower side comes into contact with the lower surface of the glass disk 4. Since the lower surface of the glass disk 4 does not directly contact the nut, there will be no oil or dirt on the lower surface of the glass disk 4 (no need to use cleaning fluid). During the cleaning and wiping process of the glass disk 4, the continuously dynamically rolled and replaced lint-free cloth strip 24 on the upper side scrapes against the rotating surface of the glass disk 4. First, it uses cleaning fluid to complete the wet wiping and cleaning of oil stains and stubborn dirt. After the lint-free cloth strip 24 absorbs and consumes the residual cleaning fluid on the disk surface, the continuously moving new cloth surface performs dry wiping on the upper surface of the glass disk 4, effectively removing residual cleaning fluid water stains and preventing residual cleaning fluid marks on the surface of the glass disk 4 from interfering with subsequent visual inspection.

[0029] Example 2: Please refer to Figure 1 - Figure 14The dust collection mechanism includes a suction tube 37 connected to the dust collection box 36, and a dust collection head 38 connected to the end of the suction tube 37. The dust collection head 38 has a first suction port 13 and a second suction port 14.

[0030] A jet box 7 is fixedly connected to the main body 1 of the equipment. A first nozzle 8 and a second nozzle 9 are connected to the jet box 7. A high-pressure air pump is installed inside the jet box 7.

[0031] Two storage bins 10 are fixedly connected to the side of the main body 1 of the equipment, and both storage bins 10 are equipped with silicone contact plates inside.

[0032] A bracket 6 is fixedly connected to the main body 1 of the equipment, and an electric rod 5 is fixedly connected to the bracket 6. The electric rod 5 is fixedly connected to the drive component 12.

[0033] In this embodiment, as the driving component 12 moves toward the glass disk 4, the suction head 38 is simultaneously moved by the suction tube 37. After the suction head 38 moves, the first suction port 13 and the second suction port 14 approach the lenses of the first visual intelligent sensor 41 and the second visual intelligent sensor 40, respectively. The dust and debris adhering to the lens surfaces of the first visual intelligent sensor 41 and the second visual intelligent sensor 40 are removed by negative pressure adsorption, avoiding residual dust on the lenses of the first visual intelligent sensor 41 and the second visual intelligent sensor 40 from obstructing the light path and affecting the image recognition and detection accuracy. After all the cleaning processes of the glass disk 4 and the dust removal of the intelligent sensor lenses are completed, the electric lever 5 is controlled to retract and reset, pulling the driving component 12 back to the initial position along the slide rail 11. The driving component 12 simultaneously drives the side plate 27 and the suction head 38 to reset and return to their original positions. During the return of the driving component 12 to its original position, the tail plane of the wedge-shaped component 28 contacts and pushes against the upright plate 31, driving the upright plate 31 to flip to the right and limit its movement (see reference). Figure 8 ), and will not push the upright plate 31 to move.

[0034] It should be noted that when the cleanroom strips 24 wound on the first sleeve 17 are used up, the first sleeve 17 and the second sleeve 20 can be removed from the unwinding roller 18 and the winding roller 19 respectively, and after replacing them with brand new cleanroom strips 24, they can be reassembled and put into use. In addition, the cleaning cycle of the glass plate 4 is relatively long, so there is no need to frequently replace the cleanroom strips 24.

[0035] It should be noted that the dust collection box 36 has a filter port on the back and an openable cleaning door on the side. After the dust collection box 36 is filled with accumulated dust and debris, the dust collection box 36 can be cleaned and maintained by opening the cleaning door.

[0036] It should be noted that both storage bins 10 are equipped with silicone contact plates inside. After the hexagonal nuts are sorted and fall into the storage bin 10, they first make flexible buffer contact with the silicone contact plates, which effectively prevents the hexagonal nuts from directly hitting the body of the storage bin 10 and causing damage or abnormal noise.

[0037] It should be noted that the suction force generated by the first suction port 13 and the second suction port 14 is insufficient to pull the nuts and the applied cleaning liquid on the glass plate 4.

[0038] It should be noted that the external conveying device can convey the nut onto the glass plate 4 from the lower right position (e.g., Figure 3 (As shown).

[0039] 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 a process, method, article, or apparatus.

[0040] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A testing device for hexagonal nut fittings of rail transit vehicles, comprising a main body (1), characterized in that: A vertical plate (39) is fixedly connected to the main body (1) of the device. A first visual intelligent sensor (41) and a second visual intelligent sensor (40) are fixedly connected to the vertical plate (39). Lenses are provided on both the first visual intelligent sensor (41) and the second visual intelligent sensor (40). An electric rotating shaft (2) is fixedly connected to the main body (1). A connector (3) is installed on the electric rotating shaft (2). A glass plate (4) is fixedly connected to the end of the connector (3). A double-sided cleaning mechanism is provided on the main body (1). The double-sided cleaning mechanism includes a slide rail (11) opened on the side of the main body (1). The internal sliding connection of the drive component (12) is provided with a crossbeam (22) fixedly connected to both sides of the drive component (12). Two rotating rollers (23) are rotatably connected to the crossbeam (22). An unwinding roller (18) and a winding roller (19) are rotatably connected to both sides of the crossbeam (22). A first sleeve (17) is installed on the unwinding roller (18). A dust-free cloth strip (24) is provided on the first sleeve (17). A second sleeve (20) is installed on the winding roller (19). The dust-free cloth strip (24) is connected to the second sleeve (20) after contacting the two rotating rollers (23). A gear (21) is fixedly connected to the end of the winding roller (19).

2. The detection device for hexagonal nut accessories of rail transit vehicles according to claim 1, characterized in that: A drive motor (15) is fixedly connected to the side of the drive component (12). A worm gear (16) is fixedly connected to the output end of the drive motor (15). The upper and lower sides of the worm gear (16) are respectively meshed with corresponding gears (21). A side plate (27) is fixedly connected to the side of the drive component (12). A wedge-shaped piece (28) is fixedly connected to the side plate (27). A liquid storage cylinder (25) is fixedly connected to the main body of the equipment (1). A flow box (29) is connected inside the liquid storage cylinder (25). A horizontal pipe (26) is connected to the flow box (29). Multiple branch pipes (30) are connected inside the horizontal pipe (26).

3. The detection device for hexagonal nut accessories of rail transit vehicles according to claim 2, characterized in that: The circulation box (29) has a sliding plate (34) that slides through it. The sliding plate (34) has a round hole (33). A tension spring (35) is fixedly connected to the end of the sliding plate (34). The end of the tension spring (35) away from the sliding plate (34) is fixedly connected to the outer wall of the circulation box (29).

4. The detection device for hexagonal nut accessories of rail transit vehicles according to claim 3, characterized in that: The bottom of the slide plate (34) is rotatably connected to a pivot, and a vertical plate (31) is fixedly connected to the pivot. A blocking member (32) is fixedly connected to the outer side wall of the slide plate (34), and the blocking member (32) is in contact with the vertical plate (31).

5. The detection device for hexagonal nut accessories of rail transit vehicles according to claim 1, characterized in that: A dust collection box (36) is fixedly connected to the drive component (12), and a suction pump is provided inside the dust collection box (36). A dust collection mechanism is provided on the dust collection box (36).

6. The detection device for hexagonal nut accessories of rail transit vehicles according to claim 5, characterized in that: The dust collection mechanism includes a suction tube (37) connected to the dust collection box (36), and a dust collection head (38) is connected to the end of the suction tube (37). The dust collection head (38) is provided with a first suction port (13) and a second suction port (14).

7. The detection device for hexagonal nut accessories of rail transit vehicles according to claim 1, characterized in that: A jet box (7) is fixedly connected to the main body (1) of the equipment. A first nozzle (8) and a second nozzle (9) are connected to the jet box (7). A high-pressure air pump is installed inside the jet box (7).

8. The detection device for hexagonal nut accessories of rail transit vehicles according to claim 1, characterized in that: Two storage bins (10) are fixedly connected to the side of the main body (1) of the equipment, and silicone contact plates are provided inside the two storage bins (10).

9. The detection device for hexagonal nut accessories of rail transit vehicles according to claim 1, characterized in that: A bracket (6) is fixedly connected to the main body (1) of the equipment, and an electric rod (5) is fixedly connected to the bracket (6). The electric rod (5) is fixedly connected to the drive component (12).

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