High-precision motor shaft visual inspection equipment

Abstract

The invention discloses a high-precision motor shaft visual inspection device, and the device comprises a rack which is of a frame structure and is used for installing other parts; the first supporting roller and the second supporting roller are rotationally connected to the rack, and a gap is reserved between the first supporting roller and the second supporting roller so that a motor shaft can be placed; the mounting frame is arranged on the rack; the camera and the marking pen are arranged on the mounting frame; a sliding rail allowing the marking pen to move is arranged on the mounting frame, an electric push rod is further arranged on the mounting frame, when the camera detects that the motor shaft is abraded, the marking pen moves to the corresponding position, and the electric push rod pushes the marking pen to abut against the motor shaft to mark the abraded position of the motor shaft; after the abrasion of the motor shaft is detected, the abrasion position can be marked, manual secondary operation is not needed, and the production efficiency of the motor shaft is improved.

Description

Technical Field

[0001] This invention belongs to the field of visual inspection equipment technology, and in particular relates to a high-precision visual inspection equipment for motor shafts. Background Technology

[0002] As the core load-bearing component for motor power transmission, the motor shaft's surface wear, cracks, dents, and other defects directly affect the motor's transmission accuracy, operational stability, and service life. In mass motor production, efficient and accurate inspection of the motor shaft's surface quality is crucial for ensuring product yield. Visual inspection technology, with its advantages of non-contact operation, high speed, and high accuracy, has become the mainstream solution for detecting surface defects in motor shafts. Its core requirements are not only accurate defect identification but also rapid and precise marking of defect locations after detection, facilitating subsequent sorting and rework, thus achieving an automated closed loop of inspection-marking-sorting and improving production efficiency.

[0003] Existing high-precision motor shaft vision inspection equipment has significant shortcomings in terms of the coordination between inspection and marking, and structural adaptability, making it difficult to meet the dual requirements of accurate inspection and efficient marking for large-scale production. Specific problems are as follows: Firstly, most existing visual inspection equipment only has defect recognition capabilities and cannot simultaneously mark the defect locations. After inspection, manual verification and positioning of the motor shaft based on the inspection data are required, followed by manual marking of the defect locations. This not only increases labor costs but also leads to issues such as secondary positioning errors and omissions in marking. Furthermore, manual marking is inefficient and cannot meet the pace requirements of mass production, resulting in poor coordination between inspection, sorting, and rework processes, which seriously affects overall production efficiency.

[0004] Secondly, the few devices with marking functions mostly have fixed marking components, which cannot flexibly adjust the marking position according to the location of the defect. They can only make general markings on the fixed area of ​​the motor shaft and cannot accurately point to specific wear points. The marking drive structure of some devices is not stable enough. During marking, the marking is prone to deviation due to component vibration. Moreover, the marking force cannot be accurately controlled. Either the marking is too shallow and difficult to identify, or the marking is too deep and damages the surface of the motor shaft, further affecting product quality.

[0005] Third, the existing equipment's motor bearing support structure is mostly a single roller or simple bracket, which cannot provide stable support for the motor shaft. During the detection or marking process, the motor shaft is prone to radial displacement and axial movement. At the same time, the poor coordination between the support structure and the detection and marking components, and the posture fluctuations when the motor shaft rotates or moves will cause the camera's field of view to shift and the marking position to be misaligned, which not only reduces the accuracy of defect identification, but also exacerbates the marking deviation problem. Summary of the Invention

[0006] The summary section of this application is intended to provide a brief overview of the concepts, which will be described in detail in the detailed description section below. This summary section is not intended to identify key or essential features of the claimed technical solutions, nor is it intended to limit the scope of the claimed technical solutions.

[0007] In order to overcome the problem that the position of the motor shaft needs to be manually confirmed again after wear is detected in the prior art, the present invention provides a high-precision visual inspection device for motor shafts.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: a high-precision motor shaft visual inspection device, comprising: A rack is a frame structure used to mount other components. The first support roller and the second support roller are rotatably connected to the frame, and a gap is left between the first support roller and the second support roller to allow the motor shaft to be placed. Mounting bracket, located on the rack; The camera and marker are mounted on the mounting bracket; The mounting bracket is equipped with a slide rail for moving the marker pen, and also with an electric actuator. When the camera detects wear on the motor shaft, the marker pen moves to the corresponding position, and the electric actuator pushes the marker pen against the motor shaft to mark the wear location on the motor shaft.

[0009] Furthermore, a movable block is provided on the slide rail, and a mounting block is provided on the movable block. The marker is located on the mounting block; the electric actuator is located on the movable block, and the piston rod of the electric actuator is connected to the mounting block.

[0010] Furthermore, one end of the marker is provided with a connecting block, and the mounting block is provided with a first connecting groove corresponding to the connecting block; the marker is provided with a connecting part, and the connecting block is provided with a second connecting groove, and the connecting part is connected to the second connecting groove by a thread; the bottom of the first connecting groove is provided with an opening corresponding to the marker, and the cross-section of the opening is smaller than the cross-section of the connecting part.

[0011] Furthermore, a first spring is provided on the inner wall of the first connecting groove, and a push plate is provided on the first spring; a first movable groove is provided on the connecting block, a second spring is provided in the first movable groove, a fixing block is provided at one end of the second spring, a fixing hole is provided on the side wall of the first connecting groove, and an inclined groove is provided on the fixing block, with the inclined groove facing the inside of the first connecting groove.

[0012] Furthermore, the first support roller has a first connecting shaft at each end, and a through cavity on the first support roller, through which a drive shaft passes. Mounting boxes are located on both side walls of the frame, with the drive shaft passing through each box. A motor is mounted on each mounting box, and a transmission groove is located on the drive shaft, with the motor's output shaft inserted into the groove. A reel is located inside the mounting box, and a pull rope is mounted on the movable block, with one end of the pull rope wound around the reel. When the camera observes wear on the motor shaft, the drive shaft moves and engages with the reel in the mounting box on one side of the frame, simultaneously disengaging the drive shaft from the first support roller. The pull rope then pulls the movable block along the slide rail.

[0013] Furthermore, the first support roller is provided with a cavity, the through cavity passes through the cavity, and the inner wall of the cavity is provided with a plurality of first protrusions; a connecting plate is sleeved on the drive shaft, a connecting rod is provided on the connecting plate, the drive shaft is provided with a second movable groove, the connecting rod passes through the second movable groove, and the connecting plate is provided with a plurality of second protrusions.

[0014] Furthermore, the drive shaft is provided with two support plates, which are respectively located on both sides of the connecting plate. A third spring is provided on the support plate, with one end of the third spring abutting against the side wall of the connecting plate.

[0015] Furthermore, each end of the drive shaft is equipped with a drive wheel, which is made of magnetic material. An electromagnet and a fourth spring are provided on the inner wall of the mounting box, with one end of the fourth spring resting against the drive wheel.

[0016] Furthermore, a guide rod is provided on the inner wall of the mounting box, a limiting rod is fitted on the guide rod, a limiting groove is provided on the reel, the limiting rod is inserted into the limiting groove, and a fifth spring is provided at one end of the guide rod; a magnetic suction plate is provided at one end of the limiting rod, and the magnetic suction plate is located on the side of the electromagnet; a transmission rod is also provided on the limiting rod, and the frame is provided with transmission rollers for the transmission rods on the limiting rods inside the mounting box on both sides of the transmission frame.

[0017] Furthermore, the mounting bracket includes two first connecting plates and a second connecting plate. The two first connecting plates are respectively connected to the frame, and the second connecting plate is connected to the two first connecting plates. A second connecting shaft is provided on the side wall of the frame, and a third protrusion is provided on the second connecting shaft. A third connecting groove corresponding to the second connecting shaft and the third protrusion is provided on the first connecting plate.

[0018] The advantages of this invention are: The equipment integrates camera detection and marker marking functions. When the camera detects wear defects on the motor shaft, it can directly trigger the marker to act, eliminating the need for manual secondary verification and marking. This completely solves the problem of disconnect between detection and marking in existing equipment. It achieves a closed-loop operation of detection and marking, reducing the total time for detection and marking of a single motor shaft by more than 60%. It effectively connects with subsequent sorting and rework processes, significantly improving the overall production cycle and reducing labor costs.

[0019] The slide rails on the mounting bracket provide a stable path for the marker pen, ensuring that the marker pen can be accurately positioned to the location corresponding to the wear defect. With the help of the electric actuator to drive the marker pen against the motor shaft for marking, not only is the marking position deviation controlled within 0.1mm, but the marking force can also be precisely controlled by the electric actuator to avoid the problem of marking too shallow and difficult to identify or too deep and damaging the surface of the motor shaft, ensuring that the marking is clear and identifiable without compromising the original quality of the product.

[0020] The first and second support rollers work together to form a stable motor bearing support structure, which can effectively limit the radial offset and axial movement of the motor shaft, keeping the motor shaft in a stable posture during the inspection and marking process. This avoids the problems of camera field of view offset and marking position misalignment caused by existing single rollers or simple brackets, improving the defect recognition accuracy to over 99% and further ensuring the marking accuracy. Attached Figure Description

[0021] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application.

[0022] Furthermore, throughout the accompanying drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the elements are not necessarily drawn to scale.

[0023] In the attached diagram: Figure 1 This is a schematic diagram of the structure of a high-precision motor shaft visual inspection device in one embodiment of the present invention.

[0024] Figure 2 for Figure 1 A cross-sectional view of the slide rail of the high-precision motor shaft vision inspection device in the illustrated embodiment.

[0025] Figure 3 for Figure 2 Enlarged view of point A in the image.

[0026] Figure 4 for Figure 1 A cross-sectional view of the connecting block of the high-precision motor shaft visual inspection device in the embodiment shown.

[0027] Figure 5 for Figure 4 Enlarged view of point B in the image.

[0028] Figure 6 for Figure 1 A cross-sectional view of the first support roller of the high-precision motor shaft visual inspection device in the illustrated embodiment.

[0029] Figure 7 for Figure 6 Enlarged view of point C in the image.

[0030] Figure 8 for Figure 6 Enlarged view of point D in the image.

[0031] Figure 9 for Figure 1 Cross-sectional view of the mounting box of the high-precision motor shaft vision inspection equipment in the embodiment shown. Figure 1 .

[0032] Figure 10 for Figure 1 Cross-sectional view of the mounting box of the high-precision motor shaft vision inspection equipment in the embodiment shown. Figure 2 .

[0033] Figure 11 for Figure 10 Enlarged view of point E in the image.

[0034] Figure 12 for Figure 1 A cross-sectional view of the reel of the high-precision motor shaft visual inspection device in the illustrated embodiment.

[0035] Figure 13 for Figure 12 Enlarged view of point F in the image.

[0036] Figure 14 for Figure 12 Enlarged view of point G in the image.

[0037] Figure 15 for Figure 1 A cross-sectional view of the mounting bracket of the high-precision motor shaft vision inspection equipment in the illustrated embodiment.

[0038] Figure 16 for Figure 15 Enlarged view of point H in the image.

[0039] Figure 17 for Figure 15 Enlarged view of point I in the image.

[0040] Figure 18 for Figure 1 A cross-sectional view of the second connecting shaft of the high-precision motor shaft visual inspection device in the illustrated embodiment.

[0041] Figure 19 for Figure 18 Enlarged view of point J in the image.

[0042] The meanings of the reference numerals in the figure are as follows: 101. Frame; 102. First support roller; 103. Second support roller; 104. Mounting frame; 1041. First connecting plate; 1042. Second connecting plate; 105. Camera; 106. Electric push rod; 107. Anti-slip mat; 108. Pull rope; 109. Mounting box; 110. Motor; 111. Marker; 112. Slide rail; 113. Movable block; 114. Mounting block; 115. Connecting block; 116. Connecting part; 117. Push plate; 118. First spring; 119. First connecting groove; 120. First movable groove; 121. Fixed block; 122. Second spring; 123. Inclined groove; 124. Fixed 125. Fixed hole; 126. Drive shaft; 127. First connecting shaft; 128. Drive groove; 129. Drive wheel; 130. Fourth spring; 131. Connecting disc; 132. First protrusion; 133. Second protrusion; 134. Connecting rod; 135. Second movable groove; 136. Support plate; 137. Third spring; 138. Electromagnet; 139. Magnetic suction plate; 140. Limiting rod; 141. Guide rod; 142. Fifth spring; 143. Drive plate; 144. Drive roller; 145. Insert block; 146. Fixing plate; 147. Second connecting shaft; 148. Third protrusion; 149. Third connecting groove. Detailed Implementation

[0043] Embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings. While some embodiments of this disclosure are shown in the drawings, it should be understood that this disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this disclosure. It should be understood that the accompanying drawings and embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of protection of this disclosure.

[0044] It should also be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings. Unless otherwise specified, the embodiments and features described in this disclosure can be combined with each other.

[0045] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are used only to distinguish different devices, modules or units, and are not used to limit the order of functions performed by these devices, modules or units or their interdependencies.

[0046] It should be noted that the terms "a" and "a plurality of" used in this disclosure are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0047] The names of messages or information exchanged between multiple devices in the embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of such messages or information.

[0048] This disclosure will now be described in detail with reference to the accompanying drawings and embodiments.

[0049] like Figure 1-19 As shown, a high-precision motor shaft visual inspection device includes a frame 101, a first support roller 102, a second support roller 103, a mounting frame 104, a camera 105, and a marker pen 111.

[0050] The frame 101 is a frame structure used to install other components; the first support roller 102 and the second support roller 103 are rotatably connected to the frame 101, and a gap is left between the first support roller 102 and the second support roller 103 to allow the motor shaft to be placed; the mounting bracket 104 is provided on the frame 101; the camera 105 and the marker pen 111 are provided on the mounting bracket 104; the mounting bracket 104 is provided with a slide rail 112 for the marker pen 111 to move, and the mounting bracket 104 is also provided with an electric push rod 106. When the camera 105 detects wear on the motor shaft, the marker pen 111 moves to the corresponding position, and the electric push rod 106 pushes the marker pen 111 against the motor shaft to mark the wear position on the motor shaft.

[0051] Specifically, the camera 105 uses a high-resolution industrial-grade optical module, coupled with a dedicated image acquisition card and intelligent algorithms, to accurately capture minute defects such as wear, cracks, and dents on the motor shaft surface, achieving a recognition accuracy of 0.01mm, ensuring effective detection of various minute flaws. The marker pen 111 uses fast-drying special marking ink, providing uniform and stable ink flow, clear and durable markings. The ink composition is specially treated to prevent corrosion or secondary contamination of the motor shaft surface. Marking dries quickly, avoiding smudging and blurring during subsequent handling. The electric actuator 106 is a high-precision miniature servo electric actuator with a displacement control accuracy of ±0.02mm. The thrust can be parameterized according to the material characteristics of the motor shaft, ensuring sufficient downward pressure for clear marking while strictly controlling the pressure upper limit to prevent unnecessary indentations or damage to the motor shaft surface.

[0052] A movable block 113 is provided on the slide rail 112, and a mounting block 114 is provided on the movable block 113. A marker pen 111 is mounted on the mounting block 114. An electric actuator 106 is mounted on the movable block 113, and the piston rod of the electric actuator 106 is connected to the mounting block 114. When the camera 105 detects wear defects on the surface of the motor shaft and determines its specific position coordinates, the movable block 113 can move along the slide rail 112. The electric actuator 106 is fixedly mounted at the top center of the movable block 113, and its piston rod is rigidly connected to the mounting block 114 through a floating joint. This connection method can not only effectively compensate for installation errors, but also avoid jamming or damage caused by the piston rod bearing lateral force. When the movable block 113 drives the marker pen 111 to the designated marking position, the electric actuator 106 moves quickly, pushing the mounting block 114 and the marker pen 111 to move towards the motor shaft, so that the pen tip accurately presses against the worn surface of the motor shaft. After the marking action is completed, the electric actuator 106 immediately drives the marker pen 111 to reset, waiting for the next marking command.

[0053] One end of the marker 111 is provided with a connecting block 115, and the mounting block 114 is provided with a first connecting groove 119 corresponding to the connecting block 115; the marker 111 is provided with a connecting part 116, and the connecting block 115 is provided with a second connecting groove, the connecting part 116 being threaded into the second connecting groove; the bottom of the first connecting groove 119 is provided with an opening corresponding to the marker 111, the opening cross-section being smaller than the cross-section of the connecting part 116. Through the design of the opening cross-section, after the connecting block 115 is inserted into the first connecting groove 119, the connecting part 116 abuts against the side wall of the opening, thus fixing the connection between the marker 111 and the connecting block 115 and ensuring the accuracy of the marking by the marker 111.

[0054] A first spring 118 is provided on the inner wall of the first connecting groove 119, and a push plate 117 is provided on the first spring 118; a first movable groove 120 is provided on the connecting block 115, a second spring 122 is provided in the first movable groove 120, a fixing block 121 is provided at one end of the second spring 122, a fixing hole 124 is provided on the side wall of the first connecting groove 119, and an inclined groove 123 is provided on the fixing block 121, with the inclined groove 123 facing the inside of the first connecting groove 119.

[0055] When it is necessary to install the marker 111, the connecting block 115 is aligned with the first connecting groove 119 and inserted. During the insertion process, the fixing block 121 on the connecting block 115 is squeezed by the inner wall of the first connecting groove 119, compressing the second spring 122 and retracting into the first movable groove 120. After the connecting block 115 is fully inserted into the first connecting groove 119, the fixing block 121 pops out under the elastic force of the second spring 122 and is locked into the fixing hole 124, realizing the quick fixing of the marker 111 and the mounting block 114. At the same time, the first spring 118 on the inner wall of the first connecting groove 119 presses against the connecting block 115 through the push plate 117 to ensure that the connecting block 115 is installed firmly and to prevent the marker 111 from loosening during the marking process. During disassembly, simply press the inclined groove 123 on the fixing block 121 to make the fixing block 121 overcome the elastic force of the second spring 122 and exit the fixing hole 124. The first spring 118 pushes the push plate 117 to move, and the push plate 117 automatically removes the connecting block 115 from the first connecting groove 119, so that the marker pen 111 can be easily taken out. This quick-release structure design greatly facilitates the replacement and maintenance of the marker pen 111 and reduces equipment downtime.

[0056] Furthermore, the first support roller 102 has a first connecting shaft 126 at both ends, and a through cavity on the first support roller 102, through which a drive shaft 125 passes. Mounting boxes 109 are respectively provided on the side walls of the frame 101, and the drive shaft 125 passes through the mounting box 109. A motor 110 is mounted on the mounting box 109 on one side of the frame 101. A transmission groove 127 is provided on the drive shaft 125, and the output shaft of the motor 110 is inserted into the transmission groove 127. The output shaft of the motor 110 and the drive shaft 125 are aligned. It forms an anti-rotation fit and can move axially along the inner wall of the transmission groove 127; the mounting box 109 is provided with a spool 138, and the movable block 113 is provided with a pull rope 108, one end of the pull rope 108 is wound around the spool 138; when the camera 105 observes wear on the motor shaft, the transmission shaft 125 moves and forms a transmission fit with the spool 138 in the mounting box 109 on one side of the frame 101, and at the same time the transmission shaft 125 disengages from the first support roller 102, and the pull rope 108 pulls the movable block 113 to move on the slide rail 112.

[0057] Specifically, in its initial state, the drive shaft 125 maintains a transmission engagement with the first support roller 102. The output shaft of the motor 110 drives the drive shaft 125 to rotate via the transmission groove 127, thereby causing the first support roller 102 to rotate. This causes the motor shaft, positioned between the first support roller 102 and the second support roller 103, to rotate as well, allowing the camera 105 to perform a comprehensive scan and inspection of the circumferential surface of the motor shaft. When the camera 105 detects a wear defect on the motor shaft, the system sends a signal to control the drive shaft 125 to move along its axial direction. During the movement of the drive shaft 125, its transmission engagement with the first support roller 102 is disengaged, meaning the drive shaft 125 no longer drives the first support roller 102 to rotate, and the motor shaft stops rotating, ensuring that the wear location is accurately positioned within the field of view of the camera 105 and marked at the desired location. Simultaneously, the moved drive shaft 125 forms a new transmission connection with the reel 138 inside the mounting box 109 on one side of the frame 101. At this time, the power of the motor 110 is transmitted to the reel 138 through the drive shaft 125, and the reel 138 begins to rotate and wind or release the pull rope 108. Since one end of the pull rope 108 is connected to the movable block 113, the rotational motion of the reel 138 is converted into the linear movement of the movable block 113 along the slide rail 112, thereby accurately delivering the marker pen 111 directly above the wear position on the motor shaft, preparing for subsequent marking actions. This linkage control, which achieves motor shaft rotation detection and marker pen 111 movement positioning by switching the transmission path through the axial movement of the drive shaft 125, is compact, responsive, and effectively improves the automation level and detection and marking efficiency of the equipment. By installing mounting boxes 109 on both sides of the frame 101, the movable block 113 can be driven to move left and right on the slide rail 112 by driving the pulleys 138 on both sides of the frame 101, ensuring the flexibility of the marker 111 to move so that it can be marked at any position on the motor shaft.

[0058] The first support roller 102 has a cavity, through which a through-hole extends. Multiple first protrusions 131 are provided on the inner wall of the cavity. A connecting disc 130 is fitted onto the drive shaft 125, and a connecting rod 133 is provided on the connecting disc 130. The drive shaft 125 has a second movable groove 134, and the connecting rod 133 passes through the second movable groove 134, creating an anti-rotation fit between the connecting disc 130 and the drive shaft 125. The connecting disc 130 has multiple second protrusions 132, which are adapted to the first protrusions 131 on the inner wall of the cavity. When the drive shaft 125 and the first support roller 102 are in a transmission engagement state, the connecting disc 130 is pushed into the cavity by the third spring 136, causing the second protrusions 132 on the connecting disc 130 to mesh with the first protrusions 131 in the cavity, thereby realizing torque transmission between the drive shaft 125 and the first support roller 102. Specifically, when the motor 110 drives the transmission shaft 125 to rotate, the transmission shaft 125 drives the first support roller 102 to rotate synchronously through the meshing action between the second protrusion 132 on the connecting plate 130 and the first protrusion 131 in the cavity of the first support roller 102. When the transmission shaft 125 needs to disengage from the first support roller 102 to move the marker pen 111, the axial movement of the transmission shaft 125 will drive the connecting plate 130 to move, causing the second protrusion 132 on the connecting plate 130 to disengage from the first protrusion 131 in the cavity of the first support roller 102. At this time, the rotation of the transmission shaft 125 is no longer transmitted to the first support roller 102, the first support roller 102 stops rotating, and the motor shaft also stops.

[0059] Two support plates 135 are provided on the drive shaft 125, respectively located on both sides of the connecting plate 130. A third spring 136 is provided on the support plate 135, with one end of the third spring 136 abutting against the side wall of the connecting plate 130. When the drive shaft 125 re-establishes a transmission engagement with the first support roller 102, the connecting plate 130 moves towards the center of the cavity. If the second protrusion 132 just abuts against the first protrusion 131, the third spring 136 on one side of the connecting plate 130 is compressed, and the third spring 136 on the other side is stretched. When the motor 110 drives the drive shaft 125 to rotate, the connecting plate 130 drives the second protrusion 132 to rotate relative to the first protrusion 131. After the second protrusion 132 rotates until it is misaligned with the first protrusion 131, the third spring 136 pushes the connecting plate 130 to move so that the first protrusion 131 and the second protrusion 132 are in the same plane and mesh with each other, thus re-establishing the transmission state between the drive shaft 125 and the first support roller 102.

[0060] Furthermore, transmission wheels 128 are respectively provided at both ends of the transmission shaft 125. The transmission wheels 128 are made of magnetic material. An electromagnet 137 and a fourth spring 129 are provided on the inner wall of the mounting box 109. One end of the fourth spring 129 abuts against the transmission wheel 128. When the electromagnet 137 is energized, it generates magnetic attraction to the transmission wheel 128, overcoming the elastic force of the fourth spring 129 and pulling the transmission shaft 125 axially, realizing the transmission switching between the transmission shaft 125, the first support roller 102, and the reel 138. The specific working process is as follows: In the initial detection stage, the electromagnet 137 is not energized, and the fourth spring 129 is in a naturally extended state. Its elastic force pushes the transmission wheel 128, so that the transmission shaft 125 maintains the transmission cooperation with the first support roller 102. At this time, the motor 110 drives the first support roller 102 to rotate the motor shaft for detection. When a wear defect is detected, the system controls the corresponding electromagnet 137 to be energized. Here, the corresponding side means that if the movable block 113 needs to move to the left, the right electromagnet 137 is energized, and if the movable block 113 needs to move to the right, the left electromagnet 137 is energized. The electromagnet 137 generates a strong magnetic force to attract the transmission wheel 128. The transmission wheel 128 drives the transmission shaft 125 to move inward toward the mounting box 109, compressing the fourth spring 129. At the same time, the second protrusion 132 on the connecting plate 130 disengages from the first protrusion 131 in the cavity of the first support roller 102, and the transmission between the transmission shaft 125 and the first support roller 102 is disconnected. After the transmission shaft 125 has moved, the transmission wheel 128 at its end engages with the reel 138 in the mounting box 109. At this time, the power of the motor 110 is transmitted to the reel 138 through the transmission shaft 125. The reel 138 rotates and pulls the pull rope 108, thereby driving the movable block 113 and the marker pen 111 to move. After marking is completed, the electromagnet 137 is de-energized, the magnetic force disappears, and the elastic force of the fourth spring 129 pushes the transmission wheel 128 and transmission shaft 125 to reset. The transmission shaft 125 re-engages with the first support roller 102, the transmission of the thread wheel 138 is disengaged, and the equipment returns to its initial detection state. This method of achieving axial movement of the transmission shaft 125 through the cooperation of the electromagnet 137 and the spring has a fast response speed, precise control, and a simple, reliable structure that is easy to maintain.

[0061] It is worth noting that when the electromagnet 137 on the left side of the frame 101 is energized, the transmission wheel 128 on the right side of the frame 101 and the reel 138 on the right side of the frame 101 form a transmission engagement, pulling the movable block 113 to the right; when the electromagnet 137 on the right side of the frame 101 is energized, the transmission wheel 128 on the left side of the frame 101 and the reel 138 on the left side of the frame 101 form a transmission engagement, pulling the movable block 113 to the left.

[0062] A guide rod 141 is provided on the inner wall of the mounting box 109. A limiting rod 140 is sleeved on the guide rod 141. A limiting groove is provided on the reel 138. The limiting rod 140 is inserted into the limiting groove. A fifth spring 142 is provided at one end of the guide rod 141. A magnetic suction plate 139 is provided at one end of the limiting rod 140. The magnetic suction plate 139 is located on one side of the electromagnet 137. A transmission rod is also provided on the limiting rod 140. A transmission cavity is provided on the frame 101. The transmission rods on the limiting rods 140 in the mounting boxes 109 on both sides of the frame 101 are inserted into the transmission cavity from both ends. A transmission roller 144 is provided in the transmission cavity to drive the transmission rods on the limiting rods 140 on both sides of the frame 101, so that the limiting rods 140 on both sides of the frame 101 can move synchronously. When the electromagnet 137 is not energized, the fifth spring 142 is in its natural state. The limiting rod 140, under the elastic force of the fifth spring 142, is inserted into the limiting groove of the reel 138, braking the reel 138 and preventing it from rotating due to external force or the tension of the rope 108 when not in operation, thus ensuring the stability of the positions of the movable block 113 and the marker pen 111. When the electromagnet 137 is energized and attracts the transmission wheel 128 to drive the transmission shaft 125 to move, the electromagnet 137 simultaneously generates an attraction force on the magnetic suction plate 139. The magnetic suction plate 139 drives the limiting rod 140 to move along the guide rod 141 toward the electromagnet 137, compressing the fifth spring 142. The limiting rod 140 is then pulled out of the limiting groove of the reel 138, releasing the braking of the reel 138. At this time, the reel 138 can rotate freely under the drive of the transmission shaft 125. Simultaneously, when the limit rod 140 moves, it drives the transmission rod to move synchronously. The transmission rod pushes the transmission roller 144 to rotate, and the transmission roller 144 in turn drives the transmission rod on the limit rod 140 in the mounting box 109 on the other side to move, so that the limit rod 140 on the other side is also pulled out from the limit groove of its corresponding pulley 138. Even if the electromagnet 137 on the other side is not energized, the linkage action of the transmission roller 144 can realize the synchronous release of the brakes on both pulleys 138, ensuring the coordinated cooperation of the pull ropes 108 on both sides when the movable block 113 moves on the slide rail 112, and avoiding the movable block 113 from jamming or moving off course due to the failure to release the brake on one side. When the electromagnet 137 is de-energized, the elastic force of the fifth spring 142 pushes the limit rod 140 to reset and re-insert it into the limit groove of the reel 138, braking the reel 138. At the same time, the magnetic plate 139 disengages from the electromagnet 137, and the transmission rod and transmission roller 144 also return to their initial positions, ensuring that the reel 138 stops quickly and remains in a fixed position after marking is completed.

[0063] Furthermore, the mounting bracket 104 includes two first connecting plates 1041 and a second connecting plate 1042. The two first connecting plates 1041 are respectively connected to the frame 101, and the second connecting plate 1042 is connected to the two first connecting plates 1041. A second connecting shaft 147 is provided on the side wall of the frame 101, and a third protrusion 148 is provided on the second connecting shaft 147. A third connecting groove 149 corresponding to the second connecting shaft 147 and the third protrusion 148 is provided on the first connecting plate 1041. The third connecting groove 149 has an arc-shaped structure. The second connecting shaft 147 allows the mounting bracket 104 to rotate on the frame 101, while the third protrusion 148 limits the rotation angle of the mounting bracket 104. When using the equipment, it is preferable to rotate the mounting bracket 104 to an inclined state to avoid the mounting bracket 104 obstructing the placed motor shaft. When replacing the marker pen 111, the mounting bracket 104 is flipped to a vertical state to facilitate the replacement of the marker pen 111.

[0064] The second connecting plate 1042 has a plug 145 at its bottom, and the first connecting plate 1041 has a slot. The first connecting plate 1041 and the second connecting plate 1042 are connected and engaged through the plug 145 and the slot. A fixing plate 146 is threaded onto the second connecting shaft 147. The fixing plate 146 is used to connect the first connecting plate 1041 to the second connecting shaft 147, preventing the first connecting plate 1041 from detaching from the second connecting shaft 147. The plug 145, slot, and fixing plate 146 allow the mounting bracket 104 to be easily removed from the frame 101 for maintenance of components such as the camera 105.

[0065] The first support roller 102 and the second support roller 103 are covered with anti-slip pads 107, which are made of rubber. The anti-slip pads 107 increase the friction between the first support roller 102 and the motor shaft, so that the motor shaft can rotate on the first support roller 102 and avoid slippage. At the same time, the anti-slip pads 107 protect the motor shaft and prevent the first support roller 102 and the second support roller 103 from scratching the surface of the motor shaft.

[0066] Preferably, after the marker 111 touches the surface of the motor shaft, the first support roller 102 drives the motor shaft to rotate a short distance to extend the marking length of the marker 111 on the surface of the motor shaft, making the marking more conspicuous and easier for staff to observe.

[0067] The above description is merely a selection of preferred embodiments of this disclosure and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in the embodiments of this disclosure is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described inventive concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in the embodiments of this disclosure.

Claims

1. A high-precision motor shaft visual inspection device, characterized in that: include: The frame (101) is a frame structure used to install other components; The first support roller (102) and the second support roller (103) are rotatably connected to the frame (101), and a gap is left between the first support roller (102) and the second support roller (103) to allow the motor shaft to be placed. Mounting bracket (104) is provided on the frame (101); A camera (105) and a marker (111) are mounted on the mounting bracket (104); The mounting bracket (104) is provided with a slide rail (112) for the marker pen (111) to move. The mounting bracket (104) is also provided with an electric push rod (106). When the camera (105) detects wear on the motor shaft, the marker pen (111) moves to the corresponding position, and the electric push rod (106) pushes the marker pen (111) against the motor shaft to mark the wear position on the motor shaft.

2. The high-precision motor shaft visual inspection equipment according to claim 1, characterized in that: The slide rail (112) is provided with a movable block (113), the movable block (113) is provided with a mounting block (114), the marker pen (111) is provided on the mounting block (114); the electric actuator (106) is provided on the movable block (113), and the piston rod of the electric actuator (106) is connected to the mounting block (114).

3. The high-precision motor shaft visual inspection equipment according to claim 2, characterized in that: One end of the marker (111) is provided with a connecting block (115), and the mounting block (114) is provided with a first connecting groove (119) corresponding to the connecting block (115); the marker (111) is provided with a connecting part (116), and the connecting block (115) is provided with a second connecting groove, and the connecting part (116) is threaded into the second connecting groove; the bottom of the first connecting groove (119) is provided with an opening corresponding to the marker (111), and the cross-section of the opening is smaller than the cross-section of the connecting part (116).

4. The high-precision motor shaft visual inspection equipment according to claim 3, characterized in that: A first spring (118) is provided on the inner wall of the first connecting groove (119), and a push plate (117) is provided on the first spring (118); a first movable groove (120) is provided on the connecting block (115), a second spring (122) is provided in the first movable groove (120), a fixing block (121) is provided at one end of the second spring (122), a fixing hole (124) is provided on the side wall of the first connecting groove (119), and an inclined groove (123) is provided on the fixing block (121), the inclined groove (123) is arranged towards the inside of the first connecting groove (119).

5. The high-precision motor shaft visual inspection equipment according to claim 2, characterized in that: The first support roller (102) has a first connecting shaft (126) at each end. A through cavity is provided on the first support roller (102), and a drive shaft (125) passes through the through cavity. Mounting boxes (109) are provided on both side walls of the frame (101). The drive shaft (125) passes through the mounting box (109). A motor (110) is mounted on the mounting box (109). A transmission groove (127) is provided on the drive shaft (125), and the output shaft of the motor (110) is inserted into the transmission groove (127). The mounting box (109)... The movable block (113) is equipped with a spool (138) and a pull rope (108) is provided on it. One end of the pull rope (108) is wound around the spool (138). When the camera (105) observes wear on the motor shaft, the drive shaft (125) moves and forms a transmission engagement with the spool (138) in the mounting box (109) on one side of the frame (101). At the same time, the drive shaft (125) disengages from the first support roller (102), and the pull rope (108) pulls the movable block (113) to move on the slide rail (112).

6. The high-precision motor shaft visual inspection equipment according to claim 5, characterized in that: The first support roller (102) is provided with a cavity, the through cavity passes through the cavity, and the inner wall of the cavity is provided with a plurality of first protrusions (131); the drive shaft (125) is fitted with a connecting plate (130), the connecting plate (130) is provided with a connecting rod (133), the drive shaft (125) is provided with a second movable groove (134), the connecting rod (133) passes through the second movable groove (134), and the connecting plate (130) is provided with a plurality of second protrusions (132).

7. The high-precision motor shaft visual inspection equipment according to claim 6, characterized in that: The drive shaft (125) is provided with two support plates (135), which are respectively located on both sides of the connecting plate (130). A third spring (136) is provided on the support plate (135), and one end of the third spring (136) abuts against the side wall of the connecting plate (130).

8. The high-precision motor shaft visual inspection equipment according to claim 7, characterized in that: The drive shaft (125) has drive wheels (128) at both ends. The drive wheels (128) are made of magnetic material. The inner wall of the mounting box (109) is provided with an electromagnet (137) and a fourth spring (129). One end of the fourth spring (129) abuts against the drive wheel (128).

9. The high-precision motor shaft visual inspection equipment according to claim 8, characterized in that: The inner wall of the mounting box (109) is provided with a guide rod (141), and a limiting rod (140) is sleeved on the guide rod (141). The reel (138) is provided with a limiting groove, and the limiting rod (140) is inserted into the limiting groove. One end of the guide rod (141) is provided with a fifth spring (142). One end of the limiting rod (140) is provided with a magnetic suction plate (139), which is located on one side of the electromagnet (137). The limiting rod (140) is also provided with a transmission rod, and the frame (101) is provided with a transmission roller (144) for transmitting the transmission rod on the limiting rod (140) in the mounting box (109) on both sides of the frame (101).

10. The high-precision motor shaft visual inspection equipment according to claim 1, characterized in that: The mounting bracket (104) includes two first connecting plates (1041) and a second connecting plate (1042). The two first connecting plates (1041) are respectively connected to the frame (101), and the second connecting plate (1042) is connected to the two first connecting plates (1041). A second connecting shaft (147) is provided on the side wall of the frame (101), and a third protrusion (148) is provided on the second connecting shaft (147). A third connecting groove (149) corresponding to the second connecting shaft (147) and the third protrusion (148) is provided on the first connecting plate (1041).

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