Large bearing roller flaw detector

Abstract

A large bearing roller flaw detection machine comprises a feeding assembly used for feeding rollers. The feeding cleaning assembly is used for cleaning before roller detection; the magnetization flaw detection assembly is composed of a magnetization mechanism, a magnetic suspension spraying mechanism, a photographing detection mechanism and a demagnetization device, the magnetization mechanism is used for magnetizing the roller, the magnetic suspension spraying mechanism is used for spraying magnetic suspension to the circumferential surface and the end surface of the roller, and the photographing detection mechanism is used for photographing detection of the circumferential surface, the chamfering surface and the end surface of the roller; the demagnetizing device is used for demagnetizing the roller; the discharging and cleaning assembly is used for cleaning the rollers after the rollers are detected; the discharging assembly is used for discharging the rollers; the device further comprises a carrying manipulator, and the carrying manipulator is erected above the feeding cleaning assembly, the magnetization flaw detection assembly and the discharging cleaning assembly and used for carrying the rollers among the workstations. The scheme can greatly improve the flaw detection efficiency and flaw detection accuracy of the bearing roller, and is suitable for popularization and application.

Description

Technical Field

[0001] The invention relates to the technical field of flaw detection, in particular to a large-scale bearing roller flaw detector. Background Art

[0002] Rail transit such as trains, subways, and light rails are becoming more and more important in the national economy because of their advantages such as large transportation volume and high speed, and the safety of rail transit is also receiving more and more attention. In the operation of rail transit, wheel bearings are key components of its operation. Wheel bearings are mainly composed of inner rings, outer rings, and rollers located between the inner and outer rings. In order to ensure the safety of vehicle operation, during the production process of wheel bearings, each component of the wheel bearing must be inspected for flaws to ensure that each component meets the quality requirements. At present, the inspection of rollers on wheel bearings is mainly carried out by magnetic particle inspection. The rollers are first magnetized, and then magnetic powder is sprayed on the rollers. Finally, the magnetic powder traces on the rollers are manually inspected to determine whether the rollers meet the quality requirements. The use of manual methods will inevitably lead to problems of missed inspections and wrong inspections, which will bring safety hazards to the operation of rail vehicles. Due to the huge number of rollers, the use of manual methods requires a large number of staff to conduct inspections, which will increase the production costs of enterprises. Therefore, it is necessary to design an automated equipment to realize the automatic inspection of vehicle bearing rollers.

[0003] Therefore, in view of the shortcomings of the prior art, it is necessary to design a large-scale bearing roller flaw detector to solve the above problems. Summary of the invention

[0004] In order to overcome the above-mentioned deficiencies in the prior art, the present invention aims to provide a large-scale bearing roller flaw detector.

[0005] In order to achieve the above-mentioned purpose and other related purposes, the technical solution provided by the present invention is: a large-scale bearing roller flaw detector, comprising: A feeding assembly, the feeding assembly is used for roller feeding; A feed cleaning component, which is used for cleaning the rollers before testing; A magnetization flaw detection assembly, the magnetization flaw detection assembly is composed of a magnetization mechanism, a magnetic suspension spraying mechanism, a photographic detection mechanism and a demagnetization device, the magnetization mechanism is used to magnetize the roller, the magnetic suspension spraying mechanism is used to spray the magnetic suspension on the circumference and end surface of the roller, the photographic detection mechanism is used to take photographs and detect the circumference, chamfered surface and end surface of the roller, and the demagnetization device is used to demagnetize the roller; A discharge cleaning component, which is used for cleaning the rollers after inspection; A material unloading component, the material unloading component is used for roller unloading; It also includes a transport robot, which is mounted above the inlet cleaning component, the magnetic flaw detection component and the outlet cleaning component, and is used for transporting the rollers between various workstations.

[0006] The preferred technical solution is: the loading component and the unloading component have the same structure, and are both composed of a bracket, a transverse movement module 1, a longitudinal movement module, a vertical movement module 1 and an electromagnetic adsorption module. The transverse movement module 1 is arranged on the bracket and is used to drive the longitudinal movement module 1 to reciprocate in the transverse direction, the longitudinal movement module is used to drive the vertical movement module 1 to reciprocate in the longitudinal direction, the vertical movement module 1 is used to drive the electromagnetic adsorption module to reciprocate in the vertical direction, and the electromagnetic adsorption module is used to absorb or release the roller.

[0007] The preferred technical solution is: the feeding cleaning component and the discharging cleaning component have the same structure, both of which are composed of a dividing plate, a cleaning nozzle and a roller flipping mechanism; the dividing plate is provided with a plurality of bearing seats arranged at equal angles; the dividing plate is used to drive each of the bearing seats to switch in sequence between the loading station, the cleaning station and the unloading station; the cleaning nozzle is arranged at the cleaning station; the roller flipping mechanism is arranged corresponding to the unloading station and is used to remove the roller from the bearing seat corresponding to the unloading station and flip it to a horizontal state.

[0008] The preferred technical scheme is that the roller turning mechanism is composed of a base, a guide rail, a sliding seat, a screw rod, a fixed seat, a turning seat, a screw driving motor, a turning cylinder and a pressing cylinder, the guide rail is fixedly mounted on the base and is arranged toward the unloading station, the slide seat is slidably mounted on the guide rail, the screw rod is rotatably mounted on the base and is arranged parallel to the guide rail, the slide seat is fixedly connected to a screw nut screwed on the screw rod, the screw driving motor is fixedly mounted on the base and is used to drive the screw rod to rotate, the fixed seat is fixedly mounted on one end of the slide seat close to the dividing plate, the turning seat is rotatably connected to the fixed seat through a rotating shaft, the turning cylinder is fixedly mounted on the slide seat and is rotatably connected to the rotating shaft through a connecting rod, the pressing cylinder is fixedly mounted on one end of the turning seat away from the dividing plate and is used to drive the pressing block to retract toward the other end of the turning seat, and the turning seat is close to the dividing plate. A plug-in corresponding to the pressing block is provided at one end

[0009] The preferred technical solution is: the magnetization mechanism is composed of a base plate, a slide rail, a slide seat 1, a slide seat 2, an electrode head 1, an electrode head 2, a drive module 1, a drive module 2, a longitudinal transfer module 1 and a longitudinal transfer module 2. The slide rail is fixedly arranged on the base plate along the longitudinal direction. The slide seat 1 and the slide seat 2 are both slidably arranged on the slide rail. The drive module 1 is fixedly arranged on the slide seat 1 and is used to drive the electrode head 1 to rotate. The drive module 2 is fixedly arranged on the slide seat 2 and is used to drive the electrode head 2 to rotate. The electrode head 1 is arranged opposite to the electrode head 2. The longitudinal transfer module 1 and the longitudinal transfer module 2 are both fixedly arranged on the base. The longitudinal transfer module 1 is used to drive the slide seat 1 to approach or move away from the slide seat 2. The longitudinal transfer module 2 is used to drive the slide seat 2 to approach or move away from the slide seat 1.

[0010] The preferred technical solution is: the magnetic suspension spraying mechanism is composed of end face spray head 1, end face spray head 2 and circumferential surface spray head, the end face spray head 1 is fixed on the slide seat 1 and is arranged corresponding to the electrode head 1, the end face spray head 2 is fixed on the slide seat 2 and is arranged corresponding to the electrode head 2, the circumferential surface spray head is arranged on the outside of the electrode head 1 and the electrode head 2, and the circumferential surface spray head is driven by a lateral transfer module to approach or move away from the circumferential surface of the roller clamped by the electrode head 1 and the electrode head 2.

[0011] The preferred technical solution is: the photo detection mechanism includes a circumferential camera, a chamfer camera and an end camera, the circumferential camera and the chamfer camera are matched with the magnetization mechanism, and the end camera is arranged on the rear side of the magnetization mechanism.

[0012] The preferred technical solution is: the handling robot is composed of a transverse moving module group 2, a vertical moving module group 2, a rotating cylinder and a clamping claw mechanism; the transverse moving module group 2 is fixed above the inlet cleaning component, the magnetic flaw detection component and the outlet cleaning component through a truss; the transverse moving module group 2 is used to drive the vertical moving module group 2 to reciprocate horizontally; the vertical moving module group 2 is used to drive the rotating cylinder to reciprocate vertically; the rotating cylinder is used to drive the clamping claw mechanism to rotate; and the clamping claw mechanism is used to clamp or release the roller in a horizontal state.

[0013] The preferred technical solution is: the clamping mechanism is composed of a mounting frame, a first clamping jaw and a second clamping jaw, and the first clamping jaw and the second clamping jaw are arranged in the mounting frame in a spaced-apart manner and in parallel with each other and are driven independently.

[0014] The preferred technical solution is: the structures of the clamping jaw 1 and the clamping jaw 2 are the same, and are both composed of a claw hook 1, a claw hook 2, a linear module, a rack 1, a rack 2, a transmission gear and a clamping jaw cylinder; the linear module is fixedly mounted on the inner wall of the mounting frame; the claw hook 1 and the claw hook 2 are both slidably mounted on the linear module and arranged relatively to each other; the rack 1 is fixedly mounted on the claw hook 1 and is arranged parallel to the linear module; the rack 2 is fixedly mounted on the claw hook 2 and is arranged parallel to the linear module; the transmission gear is rotatably mounted in the mounting frame and is meshed with the rack 1 and the rack 2 at the same time; the clamping jaw cylinder is fixedly mounted on the mounting frame and is used to drive the claw hook 1 or the claw hook 2 to reciprocate on the linear module.

[0015] Due to the application of the above technical solution, the present invention has the following beneficial effects: The invention proposes a large-scale bearing roller flaw detector, which can fully automate the loading, pre-test cleaning, magnetization, magnetic suspension spraying, photo detection, demagnetization, post-test cleaning and unloading of bearing rollers. The equipment can greatly improve the flaw detection efficiency and accuracy of bearing rollers and is suitable for popularization and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The present invention is a schematic diagram of the overall structure of the flaw detector.

[0017] Figure 2 The present invention is a schematic diagram of the structure of a feeding assembly.

[0018] Figure 3 The present invention is a schematic diagram of the structure of the feed cleaning component.

[0019] Figure 4 The present invention is a schematic diagram of the roller turning mechanism structure.

[0020] Figure 5 The present invention is a schematic diagram of the structure of a magnetic flaw detection component.

[0021] Figure 6 The present invention is a schematic diagram of the structure of a handling robot.

[0022] Figure 7 The figure is a schematic diagram of the internal structure of the clamping mechanism involved in the present invention. DETAILED DESCRIPTION

[0023] The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0024] See also Figure 1-Figure 7. It should be noted that in the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the invented product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", "third" and the like are only used to distinguish the descriptions, and cannot be understood as indicating or implying relative importance. Terms such as "horizontal", "vertical", and "overhanging" do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0025] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] Example: like Figures 1 to 7 As shown, according to an overall technical concept of the present invention, a large-scale bearing roller flaw detector is provided, comprising: A loading assembly 100, the loading assembly 100 is used for roller loading; Feed cleaning assembly 200, feed cleaning assembly 200 is used for cleaning the roller before testing; The magnetization flaw detection assembly 300 is composed of a magnetization mechanism 310, a magnetic suspension spraying mechanism 320, a photographing and detecting mechanism 330 and a demagnetization device 340. The magnetization mechanism 310 is used to magnetize the roller, the magnetic suspension spraying mechanism 320 is used to spray the magnetic suspension on the circumference and end surface of the roller, the photographing and detecting mechanism 330 is used to photograph and detect the circumference, chamfered surface and end surface of the roller, and the demagnetization device 340 is used to demagnetize the roller; The discharge cleaning assembly 400 is used for cleaning the roller after inspection; A material unloading assembly 500, the material unloading assembly 500 is used for roller unloading; It also includes a transport robot 600, which is mounted above the inlet cleaning component 200, the magnetic flaw detection component 300 and the outlet cleaning component 400. The transport robot 600 is used to transport the rollers between various workstations.

[0027] like Figures 1 to 7 As shown, in an exemplary embodiment of the present invention, the loading component 100 and the unloading component 500 have the same structure, and are both composed of a bracket 101, a transverse moving module 102, a longitudinal moving module 103, a vertical moving module 104 and an electromagnetic adsorption module (not shown). The transverse moving module 102 is arranged on the bracket 101 and is used to drive the longitudinal moving module 103 to reciprocate in the transverse direction, the longitudinal moving module 103 is used to drive the vertical moving module 104 to reciprocate in the longitudinal direction, and the vertical moving module 104 is used to drive the electromagnetic adsorption module to reciprocate in the vertical direction. The electromagnetic adsorption module is used to absorb or release the roller.

[0028] It should be noted that the vertical movement module 104 is also used to drive the camera to rise and fall, and the camera is used to determine the position of the roller to facilitate system control of grasping.

[0029] like Figures 1 to 7 As shown, in an exemplary embodiment of the present invention, the feeding cleaning component 200 and the discharging cleaning component 400 have the same structure, and are both composed of a dividing plate 201, a cleaning nozzle 202 and a roller flipping mechanism 203. The dividing plate 201 is provided with a plurality of bearing seats 2011 arranged at equal angles. The dividing plate 201 is used to drive each bearing seat 2011 to switch in sequence between the loading station, the cleaning station and the unloading station. The cleaning nozzle 202 is arranged at the cleaning station; the roller flipping mechanism 203 is arranged corresponding to the unloading station and is used to remove the roller from the bearing seat 2011 corresponding to the unloading station and flip it to a horizontal state.

[0030] like Figures 1 to 7As shown, in an exemplary embodiment of the present invention, the roller flipping mechanism 203 is composed of a base 301, a guide rail 302, a slide 303, a screw (not shown), a fixed seat 305, a flip seat 306, a screw drive motor 307, a flip cylinder 308 and a clamping cylinder 309. The guide rail 302 is fixed on the base 301 and arranged toward the unloading station. The slide 303 is slidably mounted on the guide rail 302. The screw is rotated on the base 301 and arranged parallel to the guide rail 302. The slide 303 is fixedly connected to the screw nut screwed on the screw. The screw drive motor 307 is fixed on the base 301 and is used to drive the screw to rotate. The fixed seat 305 is fixed on the end of the sliding seat 303 close to the dividing plate 201. The flip seat 306 is rotatably connected to the fixed seat 305 through a rotating shaft. The flip cylinder 308 is fixed on the sliding seat 303 and is connected to the rotating shaft through a connecting rod. The clamping cylinder 309 is fixed on the end of the flip seat 306 away from the dividing plate 201 and is used to drive the clamping block to extend and retract toward the other end of the flip seat 306. The end of the flip seat 306 close to the dividing plate 201 is provided with a plug-in corresponding to the clamping block.

[0031] like Figures 1 to 7 As shown, in an exemplary embodiment of the present invention, the magnetization mechanism 310 is composed of a bottom plate 401, a slide rail 402, a slide seat 1 403, a slide seat 2 404, an electrode head 1 405, an electrode head 2 406, a drive module 1 407, a drive module 2 408, a longitudinal transfer module 1 409 and a longitudinal transfer module 2 410. The slide rail 402 is fixedly arranged on the bottom plate 401 in the longitudinal direction, the slide seat 1 403 and the slide seat 2 404 are both slidably arranged on the slide rail 402, and the drive module 1 407 is fixedly arranged on the slide seat 1. 403 and is used to drive the electrode head 1 405 to rotate, the driving module 2 408 is fixed on the slide 2 404 and is used to drive the electrode head 2 406 to rotate, the electrode head 1 405 and the electrode head 2 406 are arranged opposite to each other, the longitudinal transfer module 1 409 and the longitudinal transfer module 2 410 are both fixed on the base 401, the longitudinal transfer module 1 409 is used to drive the slide 1 403 to approach or move away from the slide 2 404, and the longitudinal transfer module 2 410 is used to drive the slide 2 404 to approach or move away from the slide 1 403.

[0032] like Figures 1 to 7 As shown, in an exemplary embodiment of the present invention, the magnetic suspension spraying mechanism 320 is composed of an end face spray head 501, an end face spray head 502 and a circumferential surface spray head 503. The end face spray head 501 is fixed on the slide 403 and is arranged corresponding to the electrode head 405. The end face spray head 502 is fixed on the slide 404 and is arranged corresponding to the electrode head 406. The circumferential surface spray head 503 is arranged on the outside of the electrode head 405 and the electrode head 406. The circumferential surface spray head 503 is driven by the lateral transfer module 504 to approach or move away from the circumferential surface of the roller clamped by the electrode head 405 and the electrode head 406.

[0033] like Figures 1 to 7 As shown, in an exemplary embodiment of the present invention, the photo detection mechanism 330 includes a circumferential camera 601, a chamfer camera 602 and an end camera 603. The circumferential camera 601 and the chamfer camera 602 are arranged in conjunction with the magnetization mechanism, and the end camera 603 is arranged on the rear side of the magnetization mechanism 310.

[0034] like Figures 1 to 7 As shown, in an exemplary embodiment of the present invention, the handling robot 600 is composed of a transverse moving module 701, a vertical moving module 702, a rotating cylinder 703 and a clamping mechanism 704. The transverse moving module 702 is fixed above the inlet cleaning component 200, the magnetic flaw detection component 300 and the outlet cleaning component 400 through a truss. The transverse moving module 701 is used to drive the vertical moving module 702 to reciprocate in the transverse direction, the vertical moving module 702 is used to drive the rotating cylinder 703 to reciprocate in the vertical direction, the rotating cylinder 703 is used to drive the clamping mechanism 704 to rotate, and the clamping mechanism 704 is used to clamp or release the roller in a horizontal state.

[0035] like Figures 1 to 7 As shown, in an exemplary embodiment of the present invention, the clamp mechanism 704 is composed of a mounting frame (not shown), a clamp 1 and a clamp 2, and the clamp 1 and the clamp 2 are arranged in parallel with each other in the mounting frame and are driven independently.

[0036] like Figures 1 to 7 As shown, in an exemplary embodiment of the present invention, the structure of the clamping jaw 1 and the clamping jaw 2 is the same, and both are composed of a claw hook 1 801, a claw hook 2 802, a linear module 803, a rack 1 804, a rack 2 805, a transmission gear 806 and a clamping jaw cylinder 807. The linear module 803 is fixed on the inner wall of the mounting frame. The claw hook 1 801 and the claw hook 2 802 are both slidably mounted on the linear module and arranged relatively to each other. The rack 1 804 is fixed on the claw hook 1 801 and is arranged parallel to the linear module 803. The rack 2 805 is fixed on the claw hook 2 802 and is arranged parallel to the linear module 803. The transmission gear 806 is rotatably mounted in the mounting frame and is meshed with the rack 1 804 and the rack 2 805 at the same time. The clamping jaw cylinder 807 is fixed on the mounting frame and is used to drive the claw hook 1 801 or the claw hook 2 802 to reciprocate on the linear module 803.

[0037] Therefore, the present invention has the following advantages: A large-scale bearing roller flaw detector proposed in the present invention can fully automatically realize the loading, pre-test cleaning, magnetization, magnetic suspension spraying, photo detection, demagnetization, post-test cleaning and unloading of bearing rollers. The equipment can greatly improve the flaw detection efficiency and accuracy of bearing rollers and is suitable for popularization and use.

[0038] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A large bearing roller flaw detector, characterized in that: Including the following settings: A loading assembly, the loading assembly is used for roller loading; A feed cleaning component, which is used for cleaning the rollers before testing; A magnetization flaw detection assembly, the magnetization flaw detection assembly is composed of a magnetization mechanism, a magnetic suspension spraying mechanism, a photographic detection mechanism and a demagnetization device, the magnetization mechanism is used to magnetize the roller, the magnetic suspension spraying mechanism is used to spray the magnetic suspension on the circumference and end surface of the roller, the photographic detection mechanism is used to take photographs and detect the circumference, chamfered surface and end surface of the roller, and the demagnetization device is used to demagnetize the roller; A discharge cleaning component, which is used for cleaning the rollers after inspection; A material unloading component, the material unloading component is used for roller unloading; It also includes a transport robot, which is mounted above the inlet cleaning component, the magnetic flaw detection component and the outlet cleaning component, and is used for transporting the rollers between various workstations.

2. A large bearing roller flaw detector according to claim 1, characterized in that: The loading assembly and the unloading assembly have the same structure, and are both composed of a bracket, a transverse movement module 1, a longitudinal movement module, a vertical movement module 1 and an electromagnetic adsorption module. The transverse movement module 1 is arranged on the bracket and is used to drive the longitudinal movement module to reciprocate in the transverse direction, the longitudinal movement module is used to drive the vertical movement module 1 to reciprocate in the longitudinal direction, the vertical movement module 1 is used to drive the electromagnetic adsorption module to reciprocate in the vertical direction, and the electromagnetic adsorption module is used to absorb or release the roller.

3. A large bearing roller flaw detector according to claim 1, characterized in that: The feeding cleaning assembly and the discharging cleaning assembly have the same structure, and are both composed of a dividing plate, a cleaning nozzle and a roller flipping mechanism. The dividing plate is provided with a plurality of bearing seats arranged at equal angles. The dividing plate is used to drive each of the bearing seats to switch in sequence between the loading station, the cleaning station and the unloading station. The cleaning nozzle is arranged at the cleaning station; the roller flipping mechanism is arranged corresponding to the unloading station and is used to remove the roller from the bearing seat corresponding to the unloading station and flip it to a horizontal state.

4. A large bearing roller flaw detector according to claim 3, characterized in that: The transmission mechanism is a plurality of pairs, and the pairs are connected together. The pairs are connected together by a pair of guide rails, and the pair is connected together by a pair of guide rails. The pair is connected together by a pair of guide rails, and the pair is connected together by a pair of guide rails.

5. A large bearing roller flaw detector according to claim 1, characterized in that: The magnetization mechanism is composed of a base plate, a slide rail, a slide seat 1, a slide seat 2, an electrode head 1, an electrode head 2, a drive module 1, a drive module 2, a longitudinal transfer module 1 and a longitudinal transfer module 2. The slide rail is fixedly arranged on the base plate along the longitudinal direction. The slide seat 1 and the slide seat 2 are both slidably arranged on the slide rail. The drive module 1 is fixedly arranged on the slide seat 1 and is used to drive the electrode head 1 to rotate. The drive module 2 is fixedly arranged on the slide seat 2 and is used to drive the electrode head 2 to rotate. The electrode head 1 is arranged opposite to the electrode head 2. The longitudinal transfer module 1 and the longitudinal transfer module 2 are both fixedly arranged on the base. The longitudinal transfer module 1 is used to drive the slide seat 1 to approach or move away from the slide seat 2. The longitudinal transfer module 2 is used to drive the slide seat 2 to approach or move away from the slide seat 1.

6. A large bearing roller flaw detector according to claim 5, characterized in that: The magnetic suspension spraying mechanism is composed of end face spray head 1, end face spray head 2 and circumferential surface spray head. The end face spray head 1 is fixed on the slide seat 1 and is arranged corresponding to the electrode head 1. The end face spray head 2 is fixed on the slide seat 2 and is arranged corresponding to the electrode head 2. The circumferential surface spray head is arranged on the outside of the electrode head 1 and the electrode head 2. The circumferential surface spray head is driven by the lateral transfer module to approach or move away from the circumferential surface of the roller clamped by the electrode head 1 and the electrode head 2.

7. A large bearing roller flaw detector according to claim 1, characterized in that: The photographing and detecting mechanism comprises a circumferential surface photographing camera, a chamfer photographing camera and an end surface photographing camera. The circumferential surface photographing camera and the chamfer photographing camera are matched with the magnetizing mechanism, and the end surface photographing camera is arranged at the rear side of the magnetizing mechanism.

8. A large bearing roller flaw detector according to claim 1, characterized in that: The handling robot consists of a transverse moving module group 2, a vertical moving module group 2, a rotating cylinder and a clamping mechanism. The transverse moving module group 2 is fixed above the inlet cleaning component, the magnetic flaw detection component and the outlet cleaning component through a truss. The transverse moving module group 2 is used to drive the vertical moving module group 2 to reciprocate horizontally, the vertical moving module group 2 is used to drive the rotating cylinder to reciprocate vertically, the rotating cylinder is used to drive the clamping mechanism to rotate, and the clamping mechanism is used to clamp or release the roller in a horizontal state.

9. A large bearing roller flaw detector according to claim 8, characterized in that: The clamp mechanism is composed of a mounting frame, a first clamp and a second clamp. The first clamp and the second clamp are arranged in the mounting frame in a spaced-apart manner and in parallel with each other and are driven independently.

10. A large bearing roller flaw detector according to claim 9, characterized in that: The structures of the clamping jaw 1 and the clamping jaw 2 are the same, and are both composed of a claw hook 1, a claw hook 2, a linear module, a rack 1, a rack 2, a transmission gear and a clamping jaw cylinder. The linear module is fixedly mounted on the inner wall of the mounting frame. The claw hook 1 and the claw hook 2 are both slidably mounted on the linear module and arranged relatively to each other. The rack 1 is fixedly mounted on the claw hook 1 and is arranged parallel to the linear module. The rack 2 is fixedly mounted on the claw hook 2 and is arranged parallel to the linear module. The transmission gear is rotatably mounted in the mounting frame and is meshed with the rack 1 and the rack 2 at the same time. The clamping jaw cylinder is fixedly mounted on the mounting frame and is used to drive the claw hook 1 or the claw hook 2 to reciprocate on the linear module.

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