Automatic detection equipment and method for surface defects of sliding bearing

Abstract

The invention is suitable for the field of sliding bearing defect detection, and provides an automatic sliding bearing surface defect detection device and method.The automatic sliding bearing surface defect detection device comprises a detection table, a belt conveyor is arranged in the middle of the detection table, and two guide plates are arranged at one end of the detection table; the two guide plates are oppositely arranged on the two sides of the belt conveyor. The upper end face of the detection table is fixedly connected with a fixing frame, the fixing frame is connected with a guide mechanism and a dust removal mechanism, the guide mechanism can guide the sliding bearing, and the guide mechanism is connected with an impurity removal mechanism. A processing module in the regulation and control system can carry out data analysis according to the movement track and the movement speed of the sliding bearing before detection and the vibration condition of the external environment, and control information is generated; the control module can control and adjust the driving mechanism and the lighting assembly according to the control information.

Description

Technical Field

[0001] The present invention belongs to the field of sliding bearing defect detection, and in particular relates to an automatic detection device for sliding bearing surface defects. Background Art

[0002] Sliding bearings operate under sliding friction. They provide smooth, reliable, and silent operation. Under liquid lubrication, the sliding surfaces are separated by lubricating oil, preventing direct contact, which reduces friction loss and surface wear. The portion of the shaft supported by the bearing is called the journal, and the mating part is called the bearing shell. The layer of anti-friction material cast on the inner surface of the bearing shell to improve its friction properties is called the bearing liner.

[0003] Existing sliding bearings require inspection during the production process to prevent bearings with extrusion deformation or surface scratches from entering the market. Existing automated equipment for inspecting sliding bearing surface defects typically requires the bearings to be placed on a belt conveyor until they reach the bottom of an industrial camera for inspection. As some sliding bearings collide with the sidewalls of the workbench during transport, variations in speed and trajectory are inevitable. This can also cause changes in lighting conditions on the bearing surface, affecting inspection accuracy. Summary of the Invention

[0004] The purpose of the embodiment of the present invention is to provide an automated detection device for surface defects of sliding bearings, which aims to solve the technical problem that after the sliding bearings come into contact and collide with the side wall of the workbench during transportation, the lighting conditions on the surface of the sliding bearings change, thereby affecting the detection accuracy of the sliding bearings.

[0005] The present invention is implemented as follows: an automated detection device for surface defects of sliding bearings includes a detection platform, a belt conveyor is provided in the middle of the detection platform, and two guide plates are provided at one end of the detection platform, and the two guide plates are arranged on both sides of the belt conveyor opposite to each other; The upper end surface of the detection table is fixedly connected to a fixing frame, the fixing frame is connected to a guide mechanism and a dust removal mechanism, the guide mechanism can guide the sliding bearing, the guide mechanism is connected to a dust removal mechanism, the dust removal mechanism can clean the debris on the surface of the guide mechanism; The dust removal mechanism is arranged in the middle of the guide mechanism, and the dust removal mechanism can lubricate the guide mechanism and clean debris; The upper end surface of the detection platform is fixedly connected to an outer cover, which is arranged on the side of the guide mechanism away from the guide plate. A driving mechanism is provided in the outer cover, and the driving mechanism is connected to a CCD camera. The driving mechanism can drive the CCD camera to move horizontally. Illumination components are provided on all four sides of the CCD camera, and the illumination components can change their own illumination range and illumination intensity. A control system comprising: A monitoring module that can monitor the motion trajectory and speed of the sliding bearing as well as the vibration of the external environment during movement; A processing module that can analyze data based on the movement trajectory and movement speed of the sliding bearing before detection, as well as the vibration conditions of the external environment, and generate control information; The control module can control and adjust the driving mechanism and the lighting assembly according to the control information.

[0006] According to a further technical solution, the monitoring module includes: a first speed sensor, a second speed sensor, two vibration sensors and a noise sensor; The first speed sensor is fixed between two guide plates, the second speed sensor is fixedly connected to a side of the fixing frame close to the outer cover, the two vibration sensors are fixedly connected to the guide mechanism, and the noise sensor is connected to the inner wall of the outer cover.

[0007] According to a further technical solution, the processing module includes a data processor, and the data processing method of the data processor is as follows: The calculation method of the illumination intensity of the lighting assembly is: ; L t is the real-time light intensity (unit: lux), which needs to be dynamically adjusted according to the object's speed; V0 is the initial speed (in m / s) when the sliding bearing does not enter the middle of the guide mechanism, that is, the value of the No. 1 speed sensor; V t is the real-time speed of the sliding bearing before testing (unit: m / s), that is, the value of the second speed sensor; L is the reference light intensity (unit: (lux)), which is the standard light intensity corresponding to the initial speed V; For high-speed scenes, the exposure time needs to be shortened to prevent motion blur. According to experience, for every 100% reduction in exposure time, the light intensity needs to be increased by 100% to compensate for the loss of light input. The calculation method of the illumination range of the lighting assembly is as follows: ; X is the adjustment distance of the lighting range of the lighting component (in cm); K is the influence coefficient of vibration frequency on illumination range, which is an empirical value and is taken as 0.1=0.2; f t The average value of the real-time vibration frequency of the two vibration sensors (unit: HZ); f0 is the upper limit of the vibration frequency under the condition that does not affect the light (unit: HZ); In scenes with high-frequency vibration, the exposure time needs to be shortened to reduce motion blur. However, too short an exposure time will reduce the number of photons received by the sensor, so it is necessary to increase the light flux to compensate by expanding the illumination area. Control module according to L t And the value of X adjusts the light intensity and light range of the lighting component; The data processor can also calculate the frequency difference between the two vibration sensors. When the frequency difference between the two vibration sensors exceeds a frequency difference threshold preset in the data processor, the driving mechanism drives the CCD camera to move a fixed distance toward the vibration sensor with a higher frequency value.

[0008] According to a further technical solution, the guide mechanism includes a connecting frame, a guide roller, a No. 1 motor, a tensioning assembly, a guide belt, and an adjustment assembly; Two connecting frames are slidably connected to the fixed frame, and both ends of each connecting frame are rotatably connected to a guide roller. One end of the connecting frame is fixedly connected to a No. 1 motor, and the output shaft of the No. 1 motor is fixedly connected to a guide roller. A tensioning assembly is provided in the middle of the connecting frame, and a guide belt is surrounded by the tensioning assembly and the two guide rollers. A foam sound-absorbing panel is provided in the middle of the connecting frame, and a vibration sensor is fixedly connected to the connecting frame, and the vibration sensor is in contact with the guide belt. The tensioning assembly can tension the guide belt, and an adjustment assembly is provided between the two connecting frames, and the adjustment assembly can drive the two connecting frames to move relative to each other.

[0009] According to a further technical solution, the tensioning assembly includes a sliding seat, a tensioning roller, a No. 1 electric telescopic rod and a No. 1 spring; The middle part of the connecting frame is fixedly connected to a guide rail, a sliding seat is slidably connected to the guide rail, the guide rail is fixedly connected to a No. 1 electric telescopic rod, the telescopic end of the No. 1 electric telescopic rod is fixedly connected to a protrusion, a No. 1 spring is connected between the protrusion and the sliding seat, and the bottom of the sliding seat is rotatably connected to a tensioning roller.

[0010] A further technical solution is that the adjustment component includes a No. 2 motor and a No. 2 motor, the upper end surface of the fixing frame is fixedly connected to the No. 2 motor, the output shaft of the No. 2 motor is fixedly connected to a bidirectional threaded rod, and the bidirectional threaded rod is threadedly connected to the two connecting frames at the same time.

[0011] According to a further technical solution, the dust removal mechanism includes a filter box, an electric telescopic cylinder, a perforated plate, a rubber brush head, an electric telescopic sleeve and an air suction pump; The filter box is fixedly connected to the fixed frame, the bottom of the filter box is fixedly connected to an electric telescopic cylinder, the telescopic end of the electric telescopic cylinder is fixedly connected to a perforated plate, the filter box is connected to the perforated plate through the electric telescopic cylinder, a filter screen is provided in the filter box, a plurality of rubber brush heads are distributed at the bottom of the perforated plate, the bottom of the perforated plate is also fixedly connected to an electric telescopic sleeve, and the filter box is connected to an air suction pump.

[0012] According to a further technical solution, the driving mechanism includes a third motor, a one-way threaded rod and a slider; The No. 3 motor is fixedly connected to the outer cover, the output shaft of the No. 3 motor is fixedly connected to a one-way threaded rod, the one-way threaded rod is threadedly connected to a slider, the slider is slidably connected to the inner top surface of the outer cover, and the bottom of the slider is fixedly connected to a CCD camera.

[0013] According to a further technical solution, the impurity removal mechanism includes a No. 3 electric telescopic rod, a No. 4 motor, a rubber roller and a guide hole; The guide rail is fixedly connected to the No. 3 electric telescopic rod, the telescopic end of the No. 3 electric telescopic rod is fixedly connected to the No. 4 motor, the output shaft of the No. 4 motor is fixedly connected to the rubber roller, the rubber roller is provided with multiple guide holes along the length direction, the rubber roller is provided with an oil bag filled with lubricating oil, and the oil bag is provided with an oil outlet hole.

[0014] A method for automatically detecting surface defects of sliding bearings is applied to the automatic detection device for surface defects of sliding bearings in the above embodiment, and the steps include: S1: Place the sliding bearing on the belt conveyor. The sliding bearing moves forward along with the belt conveyor. Then, under the guidance of the guide plate, the sliding bearing enters the guide mechanism, and the guide mechanism limits the sliding bearing. S2: In the center of the guide mechanism, the dust removal mechanism is used to lubricate and clean debris from the guide mechanism, reducing the friction between the sliding bearing and the guide mechanism, thereby reducing the noise and vibration caused by friction; S3: The processing module can control and adjust the drive mechanism and lighting components according to the movement trajectory, movement speed and vibration of the external environment of the sliding bearing before detection; S4: CCD camera detects the sliding bearing.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention provides an automated detection device for surface defects of sliding bearings. The monitoring module can monitor the motion trajectory and speed of the sliding bearing, as well as the vibration of the external environment during movement. The processing module can perform data analysis based on the motion trajectory, speed, and vibration of the external environment of the sliding bearing before detection, and generate control information. The control module can control and adjust the drive mechanism and lighting assembly based on the control information. 2. The present invention provides an automatic detection device for sliding bearing surface defects. When the sliding bearing is detected, the control system can calculate the real-time light intensity L according to the change of the moving speed of the sliding bearing. t The value of the speed sensor is used to adjust the illumination intensity of the lighting assembly in real time. When the second speed sensor detects that the speed reduction value of the sliding bearing exceeds the preset speed threshold in the data processor, the control system can control the adjustment assembly to drive the two connecting frames to move towards each other, thereby reducing the limit of the guide belt on the sliding bearing. At the same time, the control system controls the electric telescopic cylinder to retract, thereby reducing the squeezing force between the rubber brush head and the sliding bearing, reducing the resistance of the rubber brush head to the sliding bearing. 3. The present invention provides an automated surface defect detection device for sliding bearings. The control system can calculate the value of the adjustment distance X0, thereby adjusting the illumination range of the lighting assembly based on the vibration of the guide belt. Specifically, based on the value of X0 calculated by the data processor, each of the second electric telescopic rods is simultaneously activated to extend. All of the second electric telescopic rods drive the arc light tubes to move via the fixed rods to which they are connected. This adjusts the illumination range of all the arc light tubes. When the vibration frequency of the guide belts 35 on both sides of the sliding bearing is too high, increasing the illumination range of the arc light tubes can prevent excessive light concentration, resulting in scattered light reflections, and affecting the detection accuracy of the CCD camera. 4. The present invention provides an automated detection device for surface defects of sliding bearings, wherein the data processor can also calculate the frequency difference between two vibration sensors. When the frequency difference between the two vibration sensors exceeds a frequency difference threshold preset in the data processor, the drive mechanism drives the CCD camera to move a fixed distance toward the vibration sensor with a higher frequency value; and the control system controls the extension of the No. 3 electric telescopic rod, which drives the rubber roller to press against the guide belt, and the No. 4 motor drives the rubber roller to rotate. The rubber roller removes particulate impurities on the outer surface of the guide belt. At the same time, under the squeezing force of the rubber roller and the guide belt, the oil outlet of the oil bag in the rubber roller expands, and the oil bag flows out lubricating oil. The rubber roller applies lubricating oil to the outer surface of the guide belt, thereby reducing the friction between the guide belt and the sliding bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention; Figure 2Schematic diagram of the positions of the guide mechanism and the dust removal mechanism in the present invention; Figure 3 Schematic diagram of the structure of the guide mechanism of the present invention; Figure 4 It is a structural schematic diagram of the tensioning assembly in the present invention; Figure 5 Schematic diagram of the structure of the impurity removal mechanism of the present invention; Figure 6 Schematic diagram of the structure of the dust removal mechanism of the present invention; Figure 7 Schematic diagram of the structure of the orifice plate and the rubber brush head in the present invention; Figure 8 Schematic diagram of the internal structure of the outer cover in the present invention.

[0017] In the attached figure: 1. Testing table; 2. Belt conveyor; 3. Guide mechanism; 31. Connecting frame; 32. Guide roller; 33. No. 1 motor; 34. Tensioning assembly; 341. Sliding seat; 342. Tensioning roller; 343. No. 1 electric telescopic rod; 344. No. 1 spring; 35. Guide belt; 36. Adjustment assembly; 361. No. 2 motor; 362. Bidirectional threaded rod; 37. Guide rail; 4. Dust removal mechanism; 41. Filter box; 42. Electric telescopic cylinder; 43. Orifice plate; 44. Rubber brush head; 45. Electric telescopic sleeve; 46. Suction pump; 5. Driving mechanism; 51. Motor No. 3; 52. One-way threaded rod; 53. Slider; 6. Lighting assembly; 61. Electric telescopic rod No. 2; 62. Fixed rod; 63. Arc lamp tube; 7. Debris removal mechanism; 71. Electric telescopic rod No. 3; 72. Motor No. 4; 73. Rubber roller; 74. Guide hole; 8. Speed ​​sensor No. 1; 9. Speed ​​sensor No. 2; 10. Outer cover; 11. Guide plate; 12. Fixed bracket; 13. CCD camera; 14. Foam sound-absorbing panel. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0019] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0020] like Figures 1-8 As shown, an automated detection device for surface defects of sliding bearings includes a detection platform 1, a belt conveyor 2 is provided in the middle of the detection platform 1, and two guide plates 11 are provided at one end of the detection platform 1. The two guide plates 11 are arranged on both sides of the belt conveyor 2 relative to each other; The upper end surface of the detection table 1 is fixedly connected to a fixing frame 12, and the fixing frame 12 is connected to a guide mechanism 3 and a dust removal mechanism 4. The guide mechanism 3 can guide the sliding bearing. The guide mechanism 3 is connected to a dust removal mechanism 7, and the dust removal mechanism 7 can clean the debris on the surface of the guide mechanism 3; The dust removal mechanism 4 is arranged in the middle of the guide mechanism 3, and the dust removal mechanism 4 can lubricate the guide mechanism 3 and clean the debris; The upper end surface of the detection platform 1 is fixedly connected to an outer cover 10, which is arranged on the side of the guide mechanism 3 away from the guide plate 11. A driving mechanism 5 is provided in the outer cover 10, and the driving mechanism 5 is connected to a CCD camera 13. The driving mechanism 5 can drive the CCD camera 13 to move horizontally. Illumination components 6 are provided on all four sides of the CCD camera 13. The lighting components 6 can change their own illumination range and illumination intensity. A control system comprising: A monitoring module capable of monitoring the motion trajectory and speed of the sliding bearing as well as the vibration of the external environment during movement; a processing module capable of performing data analysis based on the motion trajectory and motion speed of the sliding bearing before detection, as well as the vibration conditions of the external environment, and generating control information; The control module can control and adjust the driving mechanism 5 and the lighting assembly 6 according to the control information.

[0021] A method for automatically detecting surface defects of sliding bearings, comprising the following steps: S1: Place the sliding bearing on the belt conveyor 2. The sliding bearing moves forward along with the belt conveyor 2. Then, under the guidance of the guide plate 11, the sliding bearing enters the guide mechanism 3, and the guide mechanism 3 limits the sliding bearing. S2: In the center of the guide mechanism 3, the dust removal mechanism 4 lubricates the guide mechanism 3 and removes debris, thereby reducing the friction between the sliding bearing and the guide mechanism 3, thereby reducing the noise and vibration caused by friction; S3: The processing module can control and adjust the driving mechanism 5 and the lighting assembly 6 according to the motion trajectory, motion speed and vibration of the external environment before the sliding bearing detection; S4: The CCD camera 13 detects the sliding bearing.

[0022] like Figure 1 and Figure 2 As shown, as a preferred embodiment of the present invention, the monitoring module includes: a first speed sensor 8, a second speed sensor 9, two vibration sensors and a noise sensor; The first speed sensor 8 is fixed between two guide plates 11, the second speed sensor 9 is fixedly connected to the side of the fixing frame 12 close to the outer cover 10, the two vibration sensors are fixedly connected to the guide mechanism 3, and the noise sensor is connected to the inner wall of the outer cover 10.

[0023] As a preferred embodiment of the present invention, the processing module includes a data processor, and the data processing method of the data processor is: The calculation method of the illumination intensity of the lighting assembly 6 is: ; L t is the real-time light intensity (unit: lux), which needs to be dynamically adjusted according to the object's speed; V0 is the initial speed (in m / s) when the sliding bearing does not enter the middle of the guide mechanism 3, i.e., the value of the No. 1 speed sensor 8; V t The real-time speed of the sliding bearing before testing (unit: m / s), i.e., the value of the second speed sensor 9; L0 is the reference light intensity (unit: lux), which is the standard light intensity corresponding to the initial speed V0; High-speed scenes require shortening the exposure time to prevent motion blur. According to experience, for every 1-fold reduction in exposure time, the light source intensity needs to be increased by 1-fold to compensate for the loss in incoming light.

[0024] The calculation method of the illumination range of the lighting assembly 6 is as follows: ; X0 is the adjustment distance of the lighting range of the lighting assembly 6, (unit cm); K is the influence coefficient of vibration frequency on illumination range, which is an empirical value and is taken as 0.1-0.2; f t The average value of the real-time vibration frequency of the two vibration sensors (unit: HZ); f0 is the upper limit of the vibration frequency under the condition that does not affect the light (unit: HZ); High-frequency vibration scenes require shortening the exposure time to reduce motion blur, but too short an exposure time will reduce the number of photons received by the sensor, and it is necessary to increase the luminous flux to compensate by expanding the illumination area.

[0025] Control module according to L t And the value of X0 adjusts the illumination intensity and illumination range of the illumination component 6; The data processor can also calculate the vibration frequency difference between the two vibration sensors, and when the vibration frequency difference between the two vibration sensors exceeds the preset vibration frequency difference threshold in the data processor, the driving mechanism 5 drives the CCD camera 13 to move a fixed distance towards the vibration sensor with a high vibration frequency value.

[0026] In this embodiment, the sliding bearing is guided by the guide mechanism 3, and during the guiding process, frictional resistance is inevitably generated between the sliding bearing and the guide mechanism 3 and the dust removal mechanism 4, thereby changing the moving speed of the sliding bearing. In the industrial detection scene, adjusting the illumination angle and intensity in real time according to the object moving track is a key technology to realize high-precision imaging, especially for the dynamic detection requirements of high-speed and irregular motion targets by the linear array CCD camera 13. Therefore, in this embodiment, when the sliding bearing is detected, the control system can calculate the value of the real-time light intensity L t , thereby adjusting the illumination intensity of the illumination assembly 6 in real time; Further, since the guide mechanism 3 guides the moving track of the sliding bearing, the vibration of the guide mechanism 3 will directly affect the lighting conditions during the detection of the sliding bearing. In order to reduce the motion blur caused by vibration, in this embodiment, the control system can calculate the value of the adjustment distance X0, thereby adjusting the illumination range of the illumination assembly 6 according to the vibration condition of the guide mechanism 3. Further, when the vibration frequency difference between the two vibration sensors exceeds the preset vibration frequency difference threshold in the data processor, it indicates that the moving track of the sliding bearing is inclined to one side of the guide mechanism 3. In this embodiment, the driving mechanism 5 is started to drive the CCD camera 13 to move synchronously to the inclined side of the sliding bearing, thereby adjusting the positional deviation between the CCD camera 13, the illumination assembly 6 and the sliding bearing, and improving the detection precision of the CCD camera 13.

[0027] As shown in Figure 2 and Figure 3 , as a preferred embodiment of the present application, the guide mechanism 3 includes a connecting frame 31, a guide roller 32, a first motor 33, a tensioning assembly 34, a guide belt 35 and an adjusting assembly 36. Two connecting frames 31 are slidably connected to the fixed frame 12, and both ends of each connecting frame 31 are rotatably connected to a guide roller 32. One end of the connecting frame 31 is fixedly connected to a No. 1 motor 33, and the output shaft of the No. 1 motor 33 is fixedly connected to a guide roller 32. A tensioning assembly 34 is provided in the middle of the connecting frame 31, and a guide belt 35 is surrounded by the tensioning assembly 34 and the two guide rollers 32. A foam sound-absorbing panel 14 is provided in the middle of the connecting frame 31, and a vibration sensor is fixedly connected to the connecting frame 31, and the vibration sensor is in contact with the guide belt 35. The tensioning assembly 34 can tighten the guide belt 35, and an adjustment assembly 36 is provided between the two connecting frames 31, and the adjustment assembly 36 can drive the two connecting frames 31 to move relative to each other.

[0028] In this embodiment, the two No. 1 motors 33 are started, and the two No. 1 motors 33 respectively drive the guide rollers 32 connected thereto to rotate. At this time, driven by the guide rollers 32, two guide belts 35 on both sides of the sliding bearing move along the forward direction of the sliding bearing. The two guide belts 35 guide the movement trajectory of the sliding bearing and can block external light and dust on both sides of the sliding bearing, thereby further improving the detection accuracy of the sliding bearing. When the sliding bearing deflects more to one side, the control system can control the driving mechanism 5 to drive the CCD camera 13 and the lighting component 6 to move synchronously, thereby reducing the position deviation between the CCD camera 13, the lighting component 6 and the sliding bearing, and further improving the detection accuracy of the sliding bearing; and the control system can also control the tensioning component 34, and tighten the guide belt 35 through the tensioning component 34. At this time, the control system synchronously controls the adjustment component 36, and the adjustment component 36 drives the two connecting frames 31 to move relative to each other, thereby improving the guiding accuracy of the sliding bearing.

[0029] like Figure 4 As shown, as a preferred embodiment of the present invention, the tensioning assembly 34 includes a sliding seat 341, a tensioning roller 342, a No. 1 electric telescopic rod 343 and a No. 1 spring 344; The middle part of the connecting frame 31 is fixedly connected to a guide rail 37, a sliding seat 341 is slidably connected to the guide rail 37, and a No. 1 electric telescopic rod 343 is fixedly connected to the guide rail 37. The telescopic end of the No. 1 electric telescopic rod 343 is fixedly connected to a protrusion, and a No. 1 spring 344 is connected between the protrusion and the sliding seat 341. The bottom of the sliding seat 341 is rotatably connected to a tensioning roller 342.

[0030] In this embodiment, the No. 1 electric telescopic rod 343 is started, and the No. 1 electric telescopic rod 343 pushes the sliding seat 341 through the No. 1 spring 344. The sliding seat 341 drives the tensioning roller 342 to tension and limit the guide belt 35. The contraction movement of the No. 1 electric telescopic rod 343 can adjust the tension of the guide belt 35, thereby improving the guiding accuracy of the sliding shaft. In this process, the squeezing force between the guide belt 35 and the foam sound-absorbing panel 14 increases. The foam sound-absorbing panel 14 can increase the stability of the guide belt 35, and reduce the vibration and noise of the guide belt 35 during movement.

[0031] Figure 2 As shown, as a preferred embodiment of the present invention, the adjustment component 36 includes a No. 2 motor 361 and a No. 2 motor 361, the upper end surface of the fixing frame 12 is fixedly connected to the No. 2 motor 361, the output shaft of the No. 2 motor 361 is fixedly connected to a bidirectional threaded rod 362, and the bidirectional threaded rod 362 is threadedly connected to the two connecting frames 31 at the same time.

[0032] In this embodiment, the second motor 361 is started, and the second motor 361 drives the bidirectional threaded rod 362 to rotate, and the bidirectional threaded rod 362 drives the two connecting frames 31 to move relative to or towards each other. When the second speed sensor 9 detects that the speed change of the sliding bearing is too large, the control system can control the adjustment component 36 to drive the two connecting frames 31 to move towards each other, thereby reducing the limit of the guide belt 35 on the sliding bearing.

[0033] like Figure 6 and Figure 7 As shown in FIG. 4 , as a preferred embodiment of the present invention, the dust removal mechanism 4 includes a filter box 41 , an electric telescopic cylinder 42 , a perforated plate 43 , a rubber brush head 44 , an electric telescopic sleeve 45 and an air suction pump 46 ; The filter box 41 is fixedly connected to the fixed frame 12, and the bottom of the filter box 41 is fixedly connected to an electric telescopic cylinder 42, and the telescopic end of the electric telescopic cylinder 42 is fixedly connected to a perforated plate 43. The filter box 41 is connected to the perforated plate 43 through the electric telescopic cylinder 42. A filter screen is provided in the filter box 41, and a plurality of rubber brush heads 44 are distributed at the bottom of the perforated plate 43. The bottom of the perforated plate 43 is also fixedly connected to an electric telescopic sleeve 45, and the filter box 41 is connected to an air suction pump 46.

[0034] In this embodiment, the electric telescopic cylinder 42 is activated to extend, and the electric telescopic cylinder 42 drives the orifice plate 43 to move downward. The orifice plate 43 drives all rubber brush heads 44 to clean the surface of the sliding bearing. At the same time, the suction pump 46 is activated to draw air outward. The orifice plate 43 sucks dust and impurities on the surface of the sliding bearing and the guide belts 35 on both sides into the filter box 41. After being filtered and collected in the filter box 41, the suction pump 46 discharges the air outward. When the second speed sensor 9 detects a large change in the speed of the sliding bearing, the control system controls the electric telescopic cylinder 42 to retract, thereby reducing the squeezing force between the rubber brush head 44 and the sliding bearing, and reducing the resistance of the rubber brush head 44 to the sliding bearing; When the electric telescopic sleeve 45 is started to retract, the wind force of the orifice plate 43 is dispersed to both sides, which can increase the absorption and cleaning of dust on the guide belt 35. When the electric telescopic sleeve 45 is extended, the wind force of the orifice plate 43 is concentrated on the sliding bearing, which can improve the cleaning effect of dust on the surface of the sliding bearing.

[0035] like Figure 8 As shown, as a preferred embodiment of the present invention, the driving mechanism 5 includes a third motor 51, a one-way threaded rod 52 and a slider 53; The third motor 51 is fixedly connected to the outer cover 10, and the output shaft of the third motor 51 is fixedly connected to a one-way threaded rod 52, and the one-way threaded rod 52 is threadedly connected to a slider 53, and the slider 53 is slidably connected to the inner top surface of the outer cover 10, and the bottom of the slider 53 is fixedly connected to the CCD camera 13.

[0036] In this embodiment, the third motor 51 is started, the third motor 51 drives the one-way threaded rod 52 to rotate, the one-way threaded rod 52 drives the slider 53 to slide horizontally along the outer cover 10, and the slider 53 drives the CCD camera 13 and the lighting assembly 6 to adjust their positions.

[0037] Figure 8 As shown, as a preferred embodiment of the present invention, the lighting assembly 6 includes a second electric telescopic rod 61, a fixed rod 62 and an arc-shaped lamp tube 63; The side wall of the slider 53 is fixedly connected with a second electric telescopic rod 61 at equal intervals. The telescopic end of the second electric telescopic rod 61 is fixedly connected to a fixed rod 62. The lower end of the fixed rod 62 is fixedly connected to an arc lamp tube 63.

[0038] In this embodiment, the value of X0 is calculated by the data processor, and the extension of each No. 2 electric telescopic rod 61 is started at the same time. All No. 2 electric telescopic rods 61 drive the arc lamp tubes 63 to move through the fixed rods 62 connected thereto. At this time, the illumination range of all arc lamp tubes 63 can be adjusted. When the vibration frequency of the guide belts 35 on both sides of the sliding bearing is too high, increasing the illumination range of the arc lamp tubes 63 can avoid motion blur caused by high-frequency vibration and affect the detection accuracy of the CCD camera 13.

[0039] Figure 5 As shown, as a preferred embodiment of the present invention, the impurity removal mechanism 7 includes a No. 3 electric telescopic rod 71, a No. 4 motor 72, a rubber roller 73 and a guide hole 74; The guide rail 37 is fixedly connected to the third electric telescopic rod 71, the telescopic end of the third electric telescopic rod 71 is fixedly connected to the fourth motor 72, the output shaft of the fourth motor 72 is fixedly connected to the rubber roller 73, the rubber roller 73 is provided with a plurality of guide holes 74 along the length direction, the rubber roller 73 is provided with an oil bag filled with lubricating oil, and the oil bag is provided with an oil outlet hole.

[0040] In this embodiment, when the vibration sensor detects that the vibration frequency of the guide belt 35 is high, the control system controls the No. 3 electric telescopic rod 71 to extend, and the No. 3 electric telescopic rod 71 drives the rubber roller 73 to press against the guide belt 35, and the No. 4 motor 72 drives the rubber roller 73 to rotate. The rubber roller 73 removes particulate impurities on the outer surface of the guide belt 35. At the same time, under the squeezing force of the rubber roller 73 and the guide belt 35, the oil outlet hole of the oil bag in the rubber roller 73 expands, and the oil bag flows out lubricating oil. The rubber roller 73 applies lubricating oil to the outer surface of the guide belt 35, thereby reducing the friction between the guide belt 35 and the sliding bearing.

[0041] Working principle: The sliding bearing is placed on the belt conveyor 2. The sliding bearing moves forward along with the belt conveyor 2. Then, under the guidance of the guide plate 11, the sliding bearing enters the guide mechanism 3. The guide mechanism 3 limits the sliding bearing. In the center of the guide mechanism 3, the dust removal mechanism 4 lubricates the guide mechanism 3 and removes debris. This reduces the friction between the sliding bearing and the guide mechanism 3, thereby reducing the noise and vibration caused by the friction. During this process, a monitoring module is provided, which can monitor the motion trajectory and motion speed of the sliding bearing as well as the vibration of the external environment during motion; a processing module capable of performing data analysis based on the motion trajectory and motion speed of the sliding bearing before detection, as well as the vibration conditions of the external environment, and generating control information; The control module can control and adjust the driving mechanism 5 and the lighting assembly 6 according to the control information.

[0042] Specifically, during the guiding process, friction resistance is inevitably generated between the sliding bearing and the guiding mechanism 3 and the dust removal mechanism 4, thereby causing the moving speed of the sliding bearing to change. In industrial detection scenarios, adjusting the lighting angle and intensity in real time according to the moving trajectory of the object is a key technology for achieving high-precision imaging, and is particularly suitable for the dynamic detection requirements of the linear array CCD camera 13 for high-speed and irregular moving targets. Therefore, in this embodiment, when the sliding bearing is detected, according to the change in the moving speed of the sliding bearing, the control system can calculate the real-time light intensity L t The value of , thereby adjusting the light intensity of the lighting assembly 6 in real time; When the No. 2 speed sensor 9 detects that the speed reduction value of the sliding bearing exceeds the preset speed threshold in the data processor, the control system can control the adjustment component 36 to drive the two connecting frames 31 to move toward each other, thereby reducing the limit of the guide belt 35 on the sliding bearing; at the same time, the control system controls the electric telescopic cylinder 42 to contract, thereby reducing the squeezing force between the rubber brush head 44 and the sliding bearing, reducing the resistance of the rubber brush head 44 to the sliding bearing.

[0043] Since the guide belt 35 guides the motion trajectory of the sliding bearing, the vibration of the guide belt 35 will directly affect the lighting conditions during the sliding bearing detection. In order to reduce the motion blur caused by the vibration, in this embodiment, the control system can calculate the value of the adjustment distance X0, thereby adjusting the lighting range of the lighting assembly 6 according to the vibration of the guide belt 35. The data processor can also calculate the frequency difference between the two vibration sensors. When the frequency difference between the two vibration sensors exceeds a frequency difference threshold preset in the data processor, the drive mechanism 5 drives the CCD camera 13 to move a fixed distance toward the vibration sensor with the higher frequency value. In addition, the control system controls the extension of the No. 3 electric telescopic rod 71, and the No. 3 electric telescopic rod 71 drives the rubber roller 73 to press against the guide belt 35. The No. 4 motor 72 drives the rubber roller 73 to rotate, and the rubber roller 73 removes the particulate impurities on the outer surface of the guide belt 35. At the same time, under the squeezing force of the rubber roller 73 and the guide belt 35, the oil outlet hole of the oil bag in the rubber roller 73 expands, and the oil bag flows out the lubricating oil. The rubber roller 73 applies the lubricating oil to the outer surface of the guide belt 35, thereby reducing the friction between the guide belt 35 and the sliding bearing.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An automated detection device for surface defects of sliding bearings, comprising a detection platform (1), a belt conveyor (2) provided in the middle of the detection platform (1), two guide plates (11) provided at one end of the detection platform (1), the two guide plates (11) being arranged on both sides of the belt conveyor (2) in a relative manner, characterized in that: The upper end surface of the detection platform (1) is fixedly connected to a fixing frame (12), and the fixing frame (12) is connected to a guide mechanism (3) and a dust removal mechanism (4), and the guide mechanism (3) is capable of guiding the sliding bearing; The upper end surface of the detection platform (1) is fixedly connected to an outer cover (10), and the outer cover (10) is arranged on a side of the guide mechanism (3) away from the guide plate (11). A driving mechanism (5) is arranged in the outer cover (10), and the driving mechanism (5) is connected to a CCD camera (13). The driving mechanism (5) can drive the CCD camera (13) to move horizontally. Illumination components (6) are arranged on four sides of the CCD camera (13), and the illumination components (6) can change their own illumination range and illumination intensity. A control system comprising: A monitoring module for acquiring motion-related data of the sliding bearing; A processing module is used to determine control information based on motion-related data of the sliding bearing; and a control module is used to control and adjust the driving mechanism (5) and the lighting assembly (6) based on the control information. The processing module includes a data processor, which calculates the frequency difference between the two vibration sensors. When the frequency difference between the two vibration sensors exceeds a frequency difference threshold preset in the data processor, the driving mechanism (5) drives the CCD camera (13) to move a fixed distance toward the vibration sensor with a higher frequency value.

2. The automatic detection equipment for sliding bearing surface defects according to claim 1 is characterized in that: The monitoring module includes: a first speed sensor (8), a second speed sensor (9), two vibration sensors and a noise sensor; The first speed sensor (8) is fixed between two guide plates (11), the second speed sensor (9) is fixedly connected to a side of the fixing frame (12) close to the outer cover (10), the two vibration sensors are fixedly connected to the guide mechanism (3), and the noise sensor is connected to the inner wall of the outer cover (10).

3. The automatic detection equipment for sliding bearing surface defects according to claim 2, characterized in that: The movement-related data of the sliding bearing at least includes monitoring of the movement trajectory, movement speed and vibration conditions of the external environment during movement.

4. The automatic detection equipment for sliding bearing surface defects according to claim 1, characterized in that: The guide mechanism (3) further comprises a connecting frame (31), a guide roller (32), a first motor (33), a tensioning assembly (34), a guide belt (35), and an adjusting assembly (36); Two connecting frames (31) are slidably connected to the fixed frame (12), and both ends of each connecting frame (31) are rotatably connected to a guide roller (32). One end of the connecting frame (31) is fixedly connected to a No. 1 motor (33), and the output shaft of the No. 1 motor (33) is fixedly connected to a guide roller (32). A tensioning assembly (34) is provided in the middle of the connecting frame (31), and a guide belt (35) is surrounded between the tensioning assembly (34) and the two guide rollers (32). A foam sound-absorbing board (14) is provided in the middle of the connecting frame (31). A vibration sensor is fixedly connected to the connecting frame (31), and the vibration sensor is in contact with the guide belt (35). The tensioning assembly (34) can tension the guide belt (35). An adjustment assembly (36) is provided between the two connecting frames (31), and the adjustment assembly (36) can drive the two connecting frames (31) to move relative to each other.

5. The automatic detection equipment for sliding bearing surface defects according to claim 4 is characterized in that: The tensioning assembly (34) includes a sliding seat (341), a tensioning roller (342), a No. 1 electric telescopic rod (343), and a No. 1 spring (344); The middle of the connecting frame (31) is fixedly connected to a guide rail (37), a sliding seat (341) is slidably connected to the guide rail (37), a No. 1 electric telescopic rod (343) is fixedly connected to the guide rail (37), a protrusion is fixedly connected to the telescopic end of the No. 1 electric telescopic rod (343), a No. 1 spring (344) is connected between the protrusion and the sliding seat (341), and a tensioning roller (342) is rotatably connected to the bottom of the sliding seat (341).

6. The automatic detection equipment for sliding bearing surface defects according to claim 4, characterized in that: The adjustment assembly (36) includes a No. 2 motor (361) and a No. 2 motor (361). The upper end surface of the fixing frame (12) is fixedly connected to the No. 2 motor (361). The output shaft of the No. 2 motor (361) is fixedly connected to a bidirectional threaded rod (362). The bidirectional threaded rod (362) is simultaneously threadedly connected to the two connecting frames (31).

7. The automatic detection equipment for sliding bearing surface defects according to claim 1, characterized in that: The dust removal mechanism (4) includes a filter box (41), an electric telescopic cylinder (42), a perforated plate (43), a rubber brush head (44), an electric telescopic sleeve (45), and an air suction pump (46); The filter box (41) is fixedly connected to the fixing frame (12); the bottom of the filter box (41) is fixedly connected to an electric telescopic cylinder (42); the telescopic end of the electric telescopic cylinder (42) is fixedly connected to a perforated plate (43); the filter box (41) is connected to the perforated plate (43) via the electric telescopic cylinder (42); a filter screen is provided in the filter box (41); a plurality of rubber brush heads (44) are distributed at the bottom of the perforated plate (43); the bottom of the perforated plate (43) is also fixedly connected to an electric telescopic sleeve (45); and the filter box (41) is connected to an air suction pump (46).

8. The automatic detection equipment for sliding bearing surface defects according to claim 1, characterized in that: The driving mechanism (5) comprises a third motor (51), a one-way threaded rod (52) and a slider (53); The third motor (51) is fixedly connected to the outer cover (10), the output shaft of the third motor (51) is fixedly connected to a one-way threaded rod (52), the one-way threaded rod (52) is threadedly connected to a slider (53), the slider (53) is slidably connected to the inner top surface of the outer cover (10), and the bottom of the slider (53) is fixedly connected to a CCD camera (13).

9. The automatic detection equipment for sliding bearing surface defects according to claim 5, characterized in that: It also includes a debris removal mechanism (7), the debris removal mechanism (7) including a No. 3 electric telescopic rod (71), a No. 4 motor (72), a rubber roller (73) and a guide hole (74); The guide rail (37) is fixedly connected to a No. 3 electric telescopic rod (71), the telescopic end of the No. 3 electric telescopic rod (71) is fixedly connected to a No. 4 motor (72), the output shaft of the No. 4 motor (72) is fixedly connected to a rubber roller (73), the rubber roller (73) is provided with a plurality of guide holes (74) along the length direction, an oil bag is provided in the rubber roller (73), the oil bag is filled with lubricating oil, and the oil bag is provided with an oil outlet hole.

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