Straightness laser detection device and method for high-strength agricultural transmission shaft production

Abstract

The invention relates to the technical field of agricultural transmission shafts, in particular to a straightness laser detection device and method for high-strength agricultural transmission shaft production, and the device comprises a detection seat, and the rear side of the top of the detection seat is fixedly connected with a transmission shaft taking part. The automatic and full-coverage detection requirements for the straightness of the high-strength agricultural transmission shaft are met, an integrated system based on deep integration of mechanical transmission and laser detection technologies is achieved, and unmanned operation of the whole process from automatic feeding, accurate positioning and clamping, constant-speed rotary scanning to final data acquisition and processing of the transmission shaft is achieved; in the detection process, high-precision laser sensors which are arranged at multiple angles are used for carrying out omnibearing scanning on the rotating transmission shaft, and a digital model of the shape of the transmission shaft is generated in real time; the system effectively overcomes blind areas and errors which are difficult to avoid in traditional manual detection or single angle measurement.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of agricultural transmission shafts, and more particularly to a straightness laser detection device and method for high-strength agricultural transmission shaft production. BACKGROUND

[0002] An agricultural transmission shaft is a key component that transmits power and torque in agricultural machinery, connecting the engine and the working components to ensure the normal operation of the agricultural machinery. High-strength agricultural transmission shafts are crucial for improving the work efficiency and reliability of agricultural machinery. Straightness is one of the important indicators for measuring the quality of transmission shafts. Poor straightness of the transmission shaft can cause vibration and noise during operation, accelerate the wear of the transmission shaft, and even lead to the breakage of the transmission shaft, seriously affecting the service life and safety of the agricultural machinery. Therefore, accurate detection of the straightness of high-strength agricultural transmission shafts is an important link to ensure their quality.

[0003] According to the single laser double PSD deep hole straightness detection device disclosed in patent CN114459388B, the device includes a light spot position and inclination angle measurement module, an elastic self-centering mechanism, a feeding mechanism, a lifting mechanism, and a data processing module. The light spot position and inclination angle measurement module is composed of a fiber laser, a cubic beam splitter prism, a first two-dimensional PSD, a convex lens, a second two-dimensional PSD, and an aluminum alloy outer frame. It realizes the measurement of the inclination angle of the laser and the position of the light spot when the self-centering mechanism moves in the deep hole. The layered design of the elastic self-centering mechanism reduces the rotation angle of the laser when it moves in the deep hole. The invention adopts a modular design concept, which is highly versatile and easy to install. It solves the problems of the inability to measure the inclination angle of the PSD probe and the easy rotation in the conventional PSD straightness measurement system, reduces the sources of measurement error, and improves the detection accuracy of the deep hole straightness.

[0004] In the process of laser straightness detection of agricultural transmission shafts, traditional detection devices usually adopt a single-position fixed design, that is, the transmission shaft to be detected is moved to the position directly below the laser detection head for detection by a conveying table. However, this conventional detection method may have certain limitations. First, most laser detection systems are equipped with only one laser detection head, which has a limited measurement coverage, making it difficult to achieve continuous and complete scanning of the full length of the transmission shaft. Second, due to factors such as mechanical transmission error, shaft weight, and support method, the spatial posture of the transmission shaft during conveying by the conveying table is often difficult to maintain completely consistent, and small deviations or tilts may occur. This instability of the posture can cause the laser beam to not always be perpendicular to the measured shaft surface, thereby affecting the accuracy of the detection data. Therefore, in actual detection, some shaft sections may not be effectively measured, forming a detection blind area, which ultimately causes significant deviations in the straightness evaluation results and cannot truly and comprehensively reflect the actual straightness condition of the agricultural transmission shaft. Summary of the Invention

[0005] To overcome the aforementioned deficiencies of the prior art, this invention provides a laser detection device and method for the straightness of high-strength agricultural drive shafts. The technical problem to be solved by this invention is that the laser detection system is only equipped with one laser detection head, which has a limited measurement coverage and makes it difficult to achieve continuous and complete scanning of the entire length of the drive shaft. Secondly, during the process of being transported by the conveyor, due to the influence of mechanical transmission errors, shaft weight, and support methods, the spatial posture of the drive shaft is often difficult to maintain completely consistently and is prone to slight offsets or tilts. This instability of posture will cause the laser beam to be unable to always be perpendicular to the measured shaft surface, thus affecting the accuracy of the detection data. Therefore, in actual detection, some shaft sections may not be effectively measured, forming detection blind spots, ultimately resulting in significant deviations in the straightness evaluation results, which cannot truly and comprehensively reflect the actual straightness of the agricultural drive shaft.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: A laser inspection device for the straightness of high-strength agricultural drive shafts includes an inspection base, on the top rear side of which a drive shaft pick-up component is fixedly connected. The detection seat includes a base plate, and L-shaped connecting plates are fixedly connected to the front sides of both the left and right sides of the base plate. A bottom support plate is fixedly connected to the inner front sides of the two L-shaped connecting plates. A conveyor table is fixedly connected to the top center of the base plate. The drive shaft picking component includes a control component. Picking components are fixedly connected to the front side of the outer wall of the control component in a circular array, and a pushing component is fixedly connected to the front side of the control component.

[0007] As a further embodiment of the present invention: an L-shaped guide plate is fixedly connected to the front side of the left side of the base plate; notches are opened on both the left and right sides of the rear side of the top of the conveyor platform; a feed inlet is opened on the front side of the right side of the conveyor platform; a feeding conveyor platform is fixedly connected to the right side of the conveyor platform on one side of the feed inlet; an L-shaped plate is fixedly connected to the top of the bottom support plate; and side L-shaped support plates are fixedly connected to the rear sides of both the left and right sides of the conveyor platform.

[0008] As a further embodiment of the present invention: a control main component is fixedly connected to the top of the L-shaped upright plate, and connecting rods are fixedly connected to the outer wall of the control main component in a ring array. A straightness laser detection head is fixedly connected to the outer side of each of the multiple connecting rods, and a line is fixedly connected to the rear side of each of the multiple straightness laser detection heads. The ends of the multiple lines away from the straightness laser detection heads are all fixedly connected to the rear side of the control main component in a ring array.

[0009] As a further embodiment of the present invention: the control component includes a U-shaped upright plate, a motor connecting plate fixedly connected to the bottom of the U-shaped upright plate, and the left and right sides of the U-shaped upright plate fixedly connected to the inner sides of two L-shaped support plates. A motor is fixedly connected to the bottom of the motor connecting plate, and a transmission disc is fixedly connected to the output end of the motor. A track is fitted on the outer wall of the transmission disc, and a second transmission disc is fitted on the top of the inner wall of the track. A semi-circular support plate is fixedly connected to the front side of the U-shaped upright plate, and connecting side plates are fixedly connected to the rear sides of the top left and right sides of the semi-circular support plate. A circular guide plate is fixedly connected to the front side of the semi-circular support plate.

[0010] As a further aspect of the present invention: a geared disc is rotatably connected to the front side of the inner wall of the circular guide disc; connecting rods are fixedly connected to the rear sides of the left and right sides of the middle of the inner wall of the circular guide disc; a circular sleeve block is fixedly connected to the inner side of the two connecting rods; an inner rotating block is rotatably connected to the inner wall of the circular sleeve block; a columnar rotating rod is fixedly connected to the inner wall of the inner rotating block; a transmission geared disc is fixedly connected to the front side of the inner rotating block; and the rear end of the columnar rotating rod is fixedly connected to the front side of the second transmission disc.

[0011] As a further embodiment of the present invention: an inner semi-circular plate is fixedly connected to the rear side of the bottom of the inner wall of the circular guide plate, and a columnar transmission crossbar is rotatably connected to the front side of the top right side of the inner semi-circular plate. Gears are fixedly connected to both ends of the columnar transmission crossbar. The outer wall of the gear on the left meshes with the front side of the transmission gear disk, and the outer wall of the gear on the right meshes with the front side of the gear disk. A front connecting plate is fixedly connected to the front side of the top left side of the inner semi-circular plate, and a sleeve plate is fixedly connected to the front side of the right side of the front connecting plate. The right side of the inner wall of the sleeve plate is fitted onto the front side of the outer wall of the columnar rotating rod, and a conical tooth is fixedly connected to the front end of the columnar rotating rod.

[0012] As a further aspect of the present invention: each of the plurality of picking components includes a picking component base rod; picking component connecting blocks are fixedly connected to the middle of the left and right sides of the plurality of picking component base rods; the inner sides of the plurality of picking component connecting blocks are fixedly connected to the outer wall of the circular guide plate; uprights are fixedly connected to the front and rear sides of the top of the plurality of picking component base rods; top support rods are fixedly connected to the side of the plurality of uprights away from the picking component base rods; guide crossbars are fixedly connected to the outer sides of the plurality of uprights; and top rods are fixedly connected to the outer sides of the plurality of top support rods. Both the front and rear sides of the inner wall of the top rod are fixedly connected with columnar horizontal guide rods. Both the inner walls of the rear of the multiple upright rods are fixedly connected with electric push rods. Both the inner sides of the multiple top support rods are fixedly connected with diamond-shaped rotating plate connecting blocks. Both the inner sides of the multiple diamond-shaped rotating plate connecting blocks are rotatably connected with diamond-shaped rotating plates. Both the front and rear sides of the inner sides of the multiple diamond-shaped rotating plates are rotatably connected with rotating rods. Both the top of the multiple sets of rotating rods away from the diamond-shaped rotating plates are rotatably connected with expansion blocks. Both the inner sides of the multiple expansion blocks on the left side are rotatably connected to the left end of the multiple electric push rods.

[0013] As a further aspect of the present invention: a retractable rod is fixedly connected to the outer side of each of the multiple sets of retractable blocks; the front and rear sides of the inner walls of the multiple sets of retractable rods are slidably connected to the left and right sides of the outer walls of the multiple sets of columnar horizontal guide rods; clamping blocks are fixedly connected to the front and rear sides of the outer sides of the multiple sets of retractable rods; and the bottom of the front and rear sides of the multiple sets of clamping blocks are slidably connected to the top inner wall of the multiple sets of guide horizontal rods.

[0014] As a further aspect of the present invention: the pusher component includes a pusher component transmission rod connecting block, the bottom of which is fixedly connected to the front side of the top of the front connecting plate, the inner wall of which is rotatably connected to a pusher component transmission rod, the left end of which is fixedly connected to a rotating disk, the right end of which is fixedly connected to a second conical tooth, the outer wall of which meshes with the outer wall of the second conical tooth, a stop block is fixedly connected to the front side of the outer side of the rotating disk, an elliptical sleeve is fitted on the outer wall of the stop block, an L-shaped push-pull top plate is fixedly connected to the middle of the front side of the elliptical sleeve, a vertical L-shaped pusher plate is fixedly connected to the right side of the L-shaped push-pull top plate, the bottom of which is slidably connected to the front side of the inner wall of the feed inlet, and the bottom of the outer wall of the L-shaped push-pull top plate is slidably connected to the top of the L-shaped guide plate.

[0015] In addition, the present invention also relates to a method for a laser inspection device for the straightness of high-strength agricultural drive shafts, comprising the following steps: Step 1: The agricultural drive shaft is conveyed to the inside of the conveyor through the feed inlet of the feed conveyor. When there is one drive shaft inside the conveyor, the other drive shafts on the top of the feed conveyor stop conveying. Step 2: Start the motor. The motor output drives the transmission disc to rotate, and the transmission disc drives the second transmission disc to rotate synchronously through the track. Step 3: The second transmission disc drives the cylindrical rotating rod to rotate, and the conical teeth at the front end of the cylindrical rotating rod drive the second conical teeth that mesh with it to rotate; Step 4: The rotation of the second conical tooth causes the pusher transmission rod to rotate, which in turn drives the rotating disk to rotate. The abutment block on the outside of the rotating disk pushes the vertical L-shaped pusher plate to push the transmission shaft on the inside of the conveyor table to the bottom of the picking part. Step 5: The rotation of the cylindrical rotating rod drives the transmission gear plate to rotate through the inner rotating block. The transmission gear plate rotates through gear transmission, causing the entire picking component to rotate, so that one of the picking components rotates to the bottom. Step 6: Start the electric push rod, pull the expansion block to slide, the expansion rod drives the clamping block to slide on the guide crossbar, and firmly clamp the drive shaft; Step 7: Continue to start the motor. The part picked up by the bottom clamping drive shaft rotates one position. The feeding conveyor continues to transport the next drive shaft into the conveyor. The next part is rotated to the bottom and the pushing and clamping actions are repeated. Step 8: Control the main component to start, drive all straightness laser detection heads to emit laser beams synchronously through the connecting pole. When the pick-up part is rotated to the detection station by the drive shaft, control the main component to process the data and analyze the detection results. If the detection value exceeds the preset tolerance range, trigger the alarm device and mark the non-conforming product number. Step 9: Multiple pick-up parts continue to rotate, and the drive shaft passes through multiple straightness laser detection heads to form a multi-angle detection coverage. The main component is controlled to synchronously collect the reflection signals of all detection heads, generate a high-precision contour model, compare it with the standard shaft type database, and identify the defect type. Step 10: Dynamically match the rotation speed of the picked-up part with the laser scanning frequency to ensure that at least multiple measurement points are acquired for each cross-section to meet the detection resolution requirements.

[0016] The beneficial effects of this invention are as follows: This invention, by incorporating a detection seat and a drive shaft pick-up component, achieves automated, high-precision, and comprehensive inspection of the straightness of high-strength agricultural drive shafts. Based on an integrated system that deeply integrates mechanical transmission and laser detection technologies, this system enables fully automated operation from automatic loading, precise positioning and clamping, and uniform rotation scanning of the drive shaft to final data acquisition and processing. This significantly improves the efficiency and consistency of the inspection process. During inspection, high-precision laser sensors arranged at multiple angles perform omnidirectional scanning of the rotating drive shaft, generating a digital model of the drive shaft's shape in real time. Through high-resolution data analysis and straightness calculation, the system effectively overcomes the blind spots and errors that are unavoidable in traditional manual inspection or single-angle measurement, ensuring high accuracy and reliability of inspection results even under complex working conditions. This technical solution not only significantly improves product quality control but also provides strong support for ensuring the performance of key components in agricultural machinery. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the three-dimensional separation structure of the main body of the present invention; Figure 3 This is a schematic diagram of the three-dimensional structure of the detection seat of the present invention; Figure 4 This is a three-dimensional structural diagram of the drive shaft taking-up component of the present invention; Figure 5 This is a schematic diagram of the three-dimensional separation structure of the drive shaft picking component of the present invention; Figure 6 This is a three-dimensional structural diagram of the control component of the present invention; Figure 7 This is a three-dimensional structural diagram of the picking component of the present invention; Figure 8 This is a schematic diagram of the three-dimensional separation structure of the picking component of the present invention; Figure 9 This is a three-dimensional structural diagram of the pusher component of the present invention; Figure 10 For the present invention Figure 9 Enlarged structural diagram at point A in the middle.

[0018] In the diagram: 1. Detection seat; 11. Base plate; 12. Side L-shaped connecting plate; 13. Conveyor table; 14. Notch; 15. Feed inlet; 16. Feed conveyor table; 17. Base plate; 18. L-shaped upright plate; 110. Control main component; 111. Connecting upright; 112. Straightness laser detection head; 113. Wiring; 114. Side L-shaped upright support plate; 115. L-shaped guide upright plate; 2. Drive shaft pick-up component; 21. Control... Components; 211, U-shaped vertical plate; 212, motor connecting plate; 213, motor; 214, transmission disc; 215, track; 216, second transmission disc; 217, semi-circular support plate; 218, connecting side plate; 219, circular guide disc; 2110, gear disc; 2111, connecting rod; 2112, circular sleeve block; 2113, inner rotating block; 2114, transmission gear disc; 2115, columnar transmission crossbar; 2 116. Gear; 2117. Columnar rotating rod; 2118. Inner semi-circular plate; 2119. Front connecting plate; 21110. Sleeve plate; 21111. Conical tooth; 22. Picking-up component; 221. Picking-up component base rod; 222. Upright rod; 223. Guide crossbar; 224. Top support rod; 225. Top rod; 226. Columnar horizontal guide rod; 227. Electric push rod; 228. Diamond-shaped rotating plate connecting block; 229. 2210. Diamond-shaped rotating plate; 2211. Rotating rod; 2212. Expanding block; 2213. Expanding rod; 2214. Clamping block; 2215. Picking-up component connecting block; 23. Pushing component; 231. Pushing component transmission rod connecting block; 232. Pushing component transmission rod; 233. Second conical tooth; 234. Abutting block; 235. Rotating disk; 236. Elliptical sleeve block; 237. L-shaped push-pull top plate; 238. Vertical L-shaped push plate. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] like Figures 1-2 As shown, the present invention provides a laser inspection device for the straightness of high-strength agricultural drive shaft production, including an inspection base 1, and a drive shaft pick-up component 2 fixedly connected to the top rear side of the inspection base 1.

[0021] like Figures 3-9As shown, the detection seat 1 includes a base plate 11. L-shaped connecting plates 12 are fixedly connected to the front sides of both the left and right sides of the base plate 11. Base support plates 17 are fixedly connected to the inner front sides of the two L-shaped connecting plates 12. A conveyor table 13 is fixedly connected to the top center of the base plate 11. An L-shaped guide plate 115 is fixedly connected to the front side of the left side of the base plate 11. Notches 14 are provided on both the left and right sides of the rear top of the conveyor table 13. A feed inlet 15 is provided on the front right side of the conveyor table 13. A feeding conveyor table 16 is fixedly connected to the right side of the conveyor table 13 on one side of the feed inlet 15. An L-shaped upright plate 18 is fixedly connected to the top of the base support plate 17. L-shaped upright support plates 114 are fixedly connected to the rear sides of both the left and right sides of the conveyor table 13. A control main component 11 is fixedly connected to the top of the L-shaped upright plate 18. 0. The outer wall of the main control component 110 is fixedly connected with connecting rods 111 in a ring array. Straightness laser detection heads 112 are fixedly connected to the outer sides of each connecting rod 111. Lines 113 are fixedly connected to the rear sides of each straightness laser detection head 112. The ends of each line 113 furthest from the straightness laser detection head 112 are fixedly connected in a ring array to the rear side of the main control component 110. The drive shaft pick-up component 2 includes a control component 21. Pick-up components 22 are fixedly connected in a ring array to the front side of the outer wall of the control component 21. A pusher component 23 is fixedly connected to the front side of the control component 21. The control component 21 includes a U-shaped upright plate 211. A motor connecting plate 212 is fixedly connected to the bottom of the U-shaped upright plate 211. Two side plates are fixedly connected to the left and right sides of the U-shaped upright plate 211. Inside the L-shaped support plate 114, a motor 213 is fixedly connected to the bottom of the motor connecting plate 212. A transmission disc 214 is fixedly connected to the output end of the motor 213. A track 215 is fitted onto the outer wall of the transmission disc 214. A second transmission disc 216 is fitted onto the top of the inner wall of the track 215. A semi-circular support plate 217 is fixedly connected to the front side of the U-shaped support plate 211. Connecting side plates 218 are fixedly connected to the rear sides of the top left and right sides of the semi-circular support plate 217. A circular guide disc 219 is fixedly connected to the front side of the semi-circular support plate 217. A gear disc 2110 is rotatably connected to the front side of the inner wall of the circular guide disc 219. Connecting rods 2111 are fixedly connected to the rear sides of the left and right sides of the middle of the inner wall of the circular guide disc 219. A circular guide disc 2110 is fixedly connected to the inner side of the two connecting rods 2111. A circular sleeve block 2112 has an inner rotating block 2113 rotatably connected to its inner wall. A columnar rotating rod 2117 is fixedly connected to the inner wall of the inner rotating block 2113. A transmission gear disk 2114 is fixedly connected to the front side of the inner rotating block 2113. The rear end of the columnar rotating rod 2117 is fixedly connected to the front side of the second transmission disk 216. An inner semi-circular plate 2118 is fixedly connected to the rear side of the bottom of the inner wall of the circular guide disk 219. A columnar transmission crossbar 2115 is rotatably connected to the front side of the top right side of the inner semi-circular plate 2118. Gears 2116 are fixedly connected to both ends of the columnar transmission crossbar 2115. The outer wall of the left gear 2116 meshes with the front side of the transmission gear disk 2114, and the outer wall of the right gear 2116 meshes with the front side of the gear disk 2110.A front connecting plate 2119 is fixedly connected to the front side of the top left side of the inner semi-circular plate 2118. A sleeve plate 21110 is fixedly connected to the front side of the right side of the front connecting plate 2119. The right side of the inner wall of the sleeve plate 21110 fits onto the front side of the outer wall of the columnar rotating rod 2117. A conical tooth 21111 is fixedly connected to the front end of the columnar rotating rod 2117. Multiple picking parts 22 each include a picking part base rod 221. Picking part connecting blocks 2214 are fixedly connected to the middle of the left and right sides of the multiple picking part base rods 221. The inner sides of the multiple sets of picking part connecting blocks 2214 are fixedly connected to the outer wall of the circular guide plate 219. Upright rods 222 are fixedly connected to the front and rear sides of the top of the multiple picking part base rods 221. The multiple sets of upright rods 222 are located away from the picking part base rods 221. Each of the multiple uprights 222 is fixedly connected to a top support rod 224 on one side. A guide crossbar 223 is fixedly connected to the outer side of each set of uprights 222. A top rod 225 is fixedly connected to the outer side of each set of top support rods 224. Columnar horizontal guide rods 226 are fixedly connected to the front and rear sides of the inner walls of each set of top rods 225. An electric push rod 227 is fixedly connected to the inner wall of each set of uprights 222 on the rear side. A rhombus-shaped rotating plate connecting block 228 is fixedly connected to the middle of the inner side of each set of top support rods 224. A rhombus-shaped rotating plate 229 is rotatably connected to the inner side of each set of rhombus-shaped rotating plate connecting blocks 228. Rotating rods 2210 are rotatably connected to the front and rear sides of the inner side of each set of rhombus-shaped rotating plates 229. A shrinking / expanding block 221 is rotatably connected to the top of each set of rotating rods 2210 on the side away from the rhombus-shaped rotating plate 229. 1. The inner sides of multiple expansion blocks 2211 on the left are rotatably connected to the left ends of multiple electric push rods 227. Expansion rods 2212 are fixedly connected to the outer sides of multiple expansion blocks 2211. The front and rear sides of the inner walls of multiple expansion rods 2212 are slidably connected to the left and right sides of the outer walls of multiple columnar horizontal guide rods 226. Clamping blocks 2213 are fixedly connected to the front and rear sides of the outer sides of multiple expansion rods 2212. The bottom sides of the clamping blocks 2213 are slidably connected to the top inner walls of multiple guide rods 223. The pusher component 23 includes a pusher component transmission rod connecting block 231. The bottom of the pusher component transmission rod connecting block 231 is fixedly connected to the front side of the top of the front connecting plate 2119. The inner wall of the pusher component transmission rod connecting block 231 is rotatably connected to... A pusher rod 232 is provided. A rotating disk 235 is fixedly connected to the left end of the pusher rod 232, and a second conical tooth 233 is fixedly connected to the right end of the pusher rod 232. The outer wall of the second conical tooth 233 meshes with the outer wall of the conical tooth 21111. A stop block 234 is fixedly connected to the front outer side of the rotating disk 235. An elliptical sleeve block 236 is fitted onto the outer wall of the stop block 234. An L-shaped push-pull top plate 237 is fixedly connected to the middle of the front side of the elliptical sleeve block 236. A vertical L-shaped pusher plate 238 is fixedly connected to the right side of the L-shaped pusher plate 237. The bottom of the vertical L-shaped pusher plate 238 is slidably connected to the front side of the inner wall of the feed inlet 15. The bottom of the outer wall of the L-shaped pusher plate 237 is slidably connected to the top of the L-shaped guide plate 115. When straightness testing of agricultural drive shafts is required, the drive shaft to be tested is first smoothly transported to the feed inlet 15 of the conveyor 13 via the feeding conveyor 16, and then accurately conveyed to the inner space of the conveyor 13. At this time, to ensure the orderliness of the testing process, when there is already a drive shaft inside the conveyor 13, the remaining drive shafts on the top of the feeding conveyor 16 will be suspended to avoid interference and collision. Subsequently, the drive motor 213 is started. After the motor starts running, its output end drives the transmission disc 214 to start rotating. The transmission disc 214 transmits power to the second transmission disc 216 through the track 215, realizing the synchronous rotation of the two. The rotation of the second transmission disc 216 further drives the columnar... Rotating rod 2117 rotates, and the conical teeth 21111 at the front end of the columnar rotating rod 2117 rotate accordingly, driving the second conical teeth 233 that are precisely meshed with it to rotate. The rotation of the second conical teeth 233 causes the pusher transmission rod 232 to start rotating, which in turn drives the rotating disk 235 fixed on it to rotate. The abutment block 234 set on the outside of the rotating disk 235 makes regular reciprocating motion inside the elliptical sleeve block 236, thereby pushing the L-shaped push-pull top plate 237 to move in the front and back directions. The L-shaped push-pull top plate 237 further drives the vertical L-shaped pusher plate 238 to slide along the front side of the inner wall of the feed port 15, and finally accurately pushes the transmission shaft temporarily stored inside the conveyor table 13 to the position to be clamped directly below the pick-up part 22. Meanwhile, the rotation of the columnar rotating rod 2117 also drives the transmission gear 2114 to rotate through the inner rotating block 2113 at its end. The transmission gear 2114 is driven by the gear 2116 meshing with it, so that the gear 2110 rotates smoothly on the inner wall of the circular guide plate 219. The rotation of the gear 2110 drives the entire picking component 22 mounted on it to rotate, so that one of the picking components 22 rotates accurately to the bottom working position. When the picking component 22 rotates to the bottom, its two sets of symmetrically arranged clamping blocks 2213 are exactly located on both sides of the transmission shaft. At this time, the electric push rod 227 is started, and the expansion and contraction block 2211 is pulled to slide along the set path. The expansion and contraction rod 2212 moves inward accordingly, driving the two sets of clamping blocks 2213 to slide synchronously along the guide crossbar 223, and finally clamping the transmission shaft securely and reliably in the picking component 22. Subsequently, motor 213 is started again, causing the pick-up piece 22, which has completed the bottom drive shaft clamping, to rotate one station. Simultaneously, the feeding conveyor 16 continues to transport the next drive shaft to be inspected to the inside of the conveyor 13. The next pick-up piece 22 then rotates to the bottom, repeating the above pushing and clamping actions to accurately fix the new drive shaft to the bottom of another set of pick-up pieces 22. At this time, the control main unit 110 starts, driving all straightness laser detection heads 112 to synchronously emit high-precision laser beams via the connecting rod 111. The laser beams scan along the drive shaft axis, forming... A continuous detection light curtain is formed. When the pick-up part 22, carrying the drive shaft, rotates to the detection station, the surface contour of the drive shaft modulates the laser beam. The reflected signal is transmitted in real time to the control unit 110 via a dedicated line 113 for high-speed data processing. The professional algorithm built into the control unit 110 analyzes the laser displacement change, calculates the center coordinates of each section of the drive shaft in real time, and generates a high-resolution three-dimensional straightness error curve. If the detected value exceeds the preset tolerance range, the control unit 110 will immediately trigger an audible and visual alarm device and automatically mark the non-compliant part. The system, through the continuous rotation of multiple pick-up parts 22, passes through multiple straightness laser detection heads 112, forming a multi-angle, full-coverage detection system. This ensures that the straightness error of the drive shaft is captured comprehensively and without omission throughout its entire length. Each straightness laser detection head 112 is independently calibrated, and its emitted laser beam maintains a precise preset angle with the axis of the drive shaft. Through cross-verification and fusion processing of multiple sets of detection data, blind spots that may occur in single-view detection are effectively eliminated, significantly improving the reliability and repeatability of the measurement results. When the drive shaft rotates through the detection area, the control main component 110 synchronously collects the reflected signals of all detection heads and uses an advanced three-dimensional reconstruction algorithm to generate a high-precision contour model. After intelligent comparison with the pre-stored standard shaft type database in the system, this model can automatically identify various defect types such as local bending, taper deviation, and out-of-roundness. Throughout the entire detection process, the rotation speed of the pick-up parts 22 and the laser scanning frequency are dynamically matched to ensure that at least multiple high-density measurement points are collected for each axial section, fully meeting the stringent requirements of high-strength agricultural drive shafts for straightness detection resolution.

[0022] In addition, the present invention also relates to a method for a laser inspection device for the straightness of high-strength agricultural drive shafts, comprising the following steps: Step 1: The agricultural drive shaft is conveyed to the inside of the conveyor 13 through the feed inlet 15 of the feed conveyor 16 and the conveyor 13. When there is a drive shaft inside the conveyor 13, the other drive shafts on the top of the feed conveyor 16 stop conveying. Step 2: Start motor 213. The output of motor 213 drives transmission disc 214 to rotate. Transmission disc 214 drives the second transmission disc 216 to rotate synchronously through track 215. Step 3: The second transmission disk 216 drives the columnar rotating rod 2117 to rotate, and the conical teeth 21111 at the front end of the columnar rotating rod 2117 drive the second conical teeth 233 that mesh with it to rotate; Step 4: The rotation of the second conical tooth 233 causes the pusher transmission rod 232 to rotate, which drives the rotating disk 235 to rotate. The abutment block 234 on the outside of the rotating disk 235 pushes the vertical L-shaped pusher plate 238 to push the transmission shaft on the inside of the conveyor table 13 to the bottom of the pick-up part 22. Step 5: The rotation of the columnar rotating rod 2117 drives the transmission gear 2114 to rotate through the inner rotating block 2113. The transmission gear 2114 drives the gear 2110 to rotate through the gear 2116, which drives the entire picking component 22 to rotate, so that one of the picking components 22 rotates to the bottom. Step 6: The electric push rod 227 is activated, which pulls the expansion block 2211 to slide. The expansion rod 2212 drives the clamping block 2213 to slide on the guide crossbar 223, firmly clamping the drive shaft. Step 7: Continue to start motor 213. The pick-up part 22, which has been clamped at the bottom of the drive shaft, rotates one position. The feeding conveyor 16 continues to convey the next drive shaft into the conveyor 13. The next pick-up part 22 rotates to the bottom and repeats the pushing and clamping action. Step 8: The main control unit 110 starts and drives all straightness laser detection heads 112 to emit laser beams synchronously through the connecting rod 111. When the pick-up part 22 rotates to the detection station with the drive shaft, the main control unit 110 processes the data and analyzes the detection results. If the detection value exceeds the preset tolerance range, the alarm device is triggered and the non-conforming product number is marked. Step 9: Multiple pick-up parts 22 rotate continuously, and the drive shaft forms a multi-angle detection coverage through multiple straightness laser detection heads 112. The main control part 110 synchronously collects the reflection signals of all detection heads, generates a high-precision contour model, compares it with the standard shaft type database, and identifies the defect type. Step 10: Dynamically match the rotation speed of the pick-up piece 22 with the laser scanning frequency to ensure that at least multiple measurement points are acquired for each cross-section to meet the detection resolution requirements.

[0023] Working principle of this invention: When it is necessary to inspect the agricultural drive shaft, the agricultural drive shaft is first conveyed to the inside of the conveyor 13 through the feed inlet 15 of the feed conveyor 16 and the conveyor 13. At this time, when there is one drive shaft inside the conveyor 13, the other drive shafts at the top of the feed conveyor 16 will no longer continue to convey. Then, the motor 213 is started. After the motor 213 starts, its output end drives the transmission disc 214 to start rotating. The transmission disc 214 drives the second transmission disc 216 to rotate synchronously through the track 215. The rotation of the second transmission disc 216 further drives the columnar rotating rod 2117 to rotate. The conical teeth 21111 at the front end of the columnar rotating rod 2117 rotate accordingly, and drive the second conical teeth 233 that mesh with it to rotate. The rotation of gear 233 causes the pusher transmission rod 232 to start rotating, which in turn drives the rotating disk 235 to rotate. The abutment block 234 on the outer side of the rotating disk 235 reciprocates within the elliptical sleeve block 236, pushing the L-shaped push-pull top plate 237 to move back and forth. The L-shaped push-pull top plate 237 drives the vertical L-shaped pusher plate 238 to slide on the front side of the inner wall of the feed inlet 15, pushing the transmission shaft on the inner side of the conveyor table 13 to the bottom of the pick-up piece 22. At the same time, the rotation of the columnar rotating rod 2117 also drives the transmission gear disk 2114 to rotate through the inner rotating block 2113. The transmission gear disk 2114 is driven by gear 2116, causing the gear disk 2110 to rotate on the inner wall of the circular guide disk 219. The rotation of the gear disk 2110 drives the pick-up piece 22 to rotate as a whole, causing one of the pick-up pieces to rotate. 22 rotates to the bottom, and the two sets of clamping blocks 2213 of the bottom-mounted component 22 are placed on both sides of the drive shaft. At this time, the electric push rod 227 is activated, pulling the expansion block 2211 to slide. The expansion rod 2212 moves inward accordingly, causing the clamping blocks 2213 to slide on the guide crossbar 223, finally firmly clamping the drive shaft. Then, the motor 213 is activated again, and the component 22, which has completed clamping the drive shaft at the bottom, rotates one position. At the same time, the feeding conveyor 16 continues to convey the next drive shaft into the conveyor 13. The next component 22 rotates to the bottom and repeats the above pushing and clamping actions, fixing the new drive shaft to the bottom of another set of component 22. At this time, the control main component 110 is activated, driving all straightness laser detection heads 1 through the connecting rod 111. 12 synchronously emit laser beams, which scan along the drive shaft axis to form a detection light curtain. When the pick-up part 22 carries the drive shaft to the detection station, the surface contour of the drive shaft modulates the laser beam. The reflected signal is transmitted to the control main unit 110 via line 113 for data processing. The built-in algorithm of the control main unit 110 analyzes the laser displacement change and calculates the center coordinates of each cross-section of the drive shaft in real time, generating a three-dimensional straightness error curve. If the detected value exceeds the preset tolerance range, the control main unit 110 immediately triggers an alarm device and marks the defective product number. Through the continuous rotation of multiple pick-up parts 22, which pass through multiple straightness laser detection heads 112 along the way, a multi-angle detection coverage is formed to ensure that the straightness error of the entire length of the drive shaft is fully captured.Each straightness laser inspection head 112 is independently calibrated, and its emitted laser beam maintains a precise angle with the drive shaft axis. Through cross-verification of multiple sets of inspection data, blind spots that may occur during single-view inspection are effectively eliminated. When the drive shaft rotates through the inspection area, the control unit 110 synchronously collects the reflected signals from all inspection heads and uses a three-dimensional reconstruction algorithm to generate a high-precision contour model. After comparing this model with a standard shaft type database, it can automatically identify defect types such as local bending and taper errors. During the inspection process, the rotation speed of the pick-up part 22 is dynamically matched with the laser scanning frequency to ensure that at least multiple measurement points are obtained for each cross-section, meeting the stringent requirements of high-strength agricultural drive shafts for inspection resolution.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A straightness laser detection device for high-strength agricultural drive shaft production, comprising a detection seat (1), characterized in that: The top rear side of the detection seat (1) is fixedly connected with a transmission shaft taking piece (2); The detection seat (1) comprises a bottom plate (11), the front sides of the left and right sides of the bottom plate (11) are fixedly connected with side L-shaped connecting plates (12), the inner front sides of the two side L-shaped connecting plates (12) are fixedly connected with a bottom supporting plate (17), and the top middle part of the bottom plate (11) is fixedly connected with a conveying table (13); The transmission shaft taking piece (2) comprises a control piece (21), the front side of the outer wall of the control piece (21) is fixedly connected with an array of taking pieces (22), and the front side of the control piece (21) is fixedly connected with a pushing piece (23).

2. The straightness laser detection device for producing a high-strength agricultural transmission shaft according to claim 1, characterized in that: The front side of the left side of the bottom plate (11) is fixedly connected with an L-shaped guide vertical plate (115), the left and right sides of the top rear side of the conveying table (13) are both provided with a notch (14), the front side of the right side of the conveying table (13) is provided with a feeding port (15), the right side of the conveying table (13) is fixedly connected with a feeding conveying table (16) on one side of the feeding port (15), the top of the bottom supporting plate (17) is fixedly connected with an L-shaped vertical plate (18), and the rear sides of the left and right sides of the conveying table (13) are both fixedly connected with side L-shaped vertical supporting plates (114).

3. The straightness laser detection device for producing a high-strength agricultural transmission shaft according to claim 2, characterized in that: The top of the L-shaped vertical plate (18) is fixedly connected with a control main piece (110), the outer wall of the control main piece (110) is fixedly connected with an array of connecting vertical rods (111), the outer sides of the plurality of connecting vertical rods (111) are both fixedly connected with straightness laser detection heads (112), the rear sides of the plurality of straightness laser detection heads (112) are both fixedly connected with wires (113), and the ends, away from the straightness laser detection heads (112), of the plurality of wires (113) are both fixedly connected with an array on the rear side of the control main piece (110).

4. The straightness laser detection device for producing a high-strength agricultural transmission shaft according to claim 1, characterized by: The control piece (21) comprises a U-shaped vertical plate (211), the bottom of the U-shaped vertical plate (211) is fixedly connected with a motor connecting plate (212), the left and right sides of the U-shaped vertical plate (211) are both fixedly connected to the inner sides of the two side L-shaped vertical supporting plates (114), the bottom of the motor connecting plate (212) is fixedly connected with a motor (213), the output end of the motor (213) is fixedly connected with a transmission disc (214), the outer wall of the transmission disc (214) is sleeved with a track (215), the inner wall top of the track (215) is sleeved with a second transmission disc (216), the front side of the U-shaped vertical plate (211) is fixedly connected with a semicircular supporting plate (217), the rear sides of the left and right sides of the top of the semicircular supporting plate (217) are both fixedly connected with link side plates (218), and the front side of the semicircular supporting plate (217) is fixedly connected with a circular guide disc (219).

5. The straightness laser detection device for producing a high-strength agricultural transmission shaft according to claim 4, characterized in that: The inner wall front side of the circular guide disc (219) is rotationally connected with a tooth disc (2110), the rear side of the left and right sides of the middle part of the inner wall of the circular guide disc (219) is fixedly connected with a connecting rod (2111), the inner side of the two connecting rods (2111) is fixedly connected with a circular sleeve block (2112), the inner wall of the circular sleeve block (2112) is rotationally connected with an inner rotating block (2113), the inner wall of the inner rotating block (2113) is fixedly connected with a columnar rotating rod (2117), the front side of the inner rotating block (2113) is fixedly connected with a transmission tooth disc (2114), and the rear end of the columnar rotating rod (2117) is fixedly connected with the front side of the second transmission disc (216).

6. The straightness laser detection device for producing a high-strength agricultural transmission shaft according to claim 5, characterized in that: The rear side of the inner wall bottom of the circular guide disc (219) is fixedly connected with an inner semicircular plate (2118), the front side of the top right side of the inner semicircular plate (2118) is rotationally connected with a columnar transmission cross rod (2115), the left and right ends of the columnar transmission cross rod (2115) are fixedly connected with a gear (2116), the outer wall of the left gear (2116) is engaged with the front side of the transmission tooth disc (2114), the outer wall of the right gear (2116) is engaged with the front side of the tooth disc (2110), the front side of the top left side of the inner semicircular plate (2118) is fixedly connected with a front link plate (2119), the front side of the right side of the front link plate (2119) is fixedly connected with a sleeve plate (21110), the right side of the inner wall of the sleeve plate (21110) is sleeved on the front side of the outer wall of the columnar rotating rod (2117), and the front end of the columnar rotating rod (2117) is fixedly connected with a conical tooth (21111).

7. The straightness laser detection device for high-strength agricultural transmission shaft production of claim 1, wherein: A plurality of said take pieces (22) each include a take piece bottom rod (221), the middle of the left and right sides of a plurality of said take piece bottom rods (221) are fixedly connected with take piece connection blocks (2214), the inner sides of a plurality of groups of said take piece connection blocks (2214) are fixedly connected on the outer wall of a circular guide disc (219), the front and back sides of the top of a plurality of said take piece bottom rods (221) are fixedly connected with vertical rods (222), the sides away from the take piece bottom rods (221) of a plurality of groups of said vertical rods (222) are fixedly connected with top supporting rods (224), the outer sides of a plurality of groups of said vertical rods (222) are fixedly connected with guide cross rods (223), the outer sides of a plurality of said top supporting rods (224) are fixedly connected with top rods (225), the front and back sides of the inner walls of a plurality of said top rods (225) are fixedly connected with columnar cross guide rods (226), the inner walls of a plurality of said vertical rods (222) on the back side are fixedly connected with electric push rods (227), the middle of the inner sides of a plurality of said top supporting rods (224) are fixedly connected with lozenge-shaped rotating plate connection blocks (228), the inner sides of a plurality of said lozenge-shaped rotating plate connection blocks (228) are rotatably connected with lozenge-shaped rotating plates (229), the front and back sides of the inner sides of a plurality of said lozenge-shaped rotating plates (229) are rotatably connected with rotating rods (2210), the sides away from the lozenge-shaped rotating plates (229) of the top of a plurality of groups of said rotating rods (2210) are rotatably connected with expansion and contraction blocks (2211), the inner sides of a plurality of said expansion and contraction blocks (2211) on the left side are rotatably connected on the left end of a plurality of said electric push rods (227).

8. The straightness laser detection device for producing a high-strength agricultural transmission shaft according to claim 7, characterized by: The outer sides of a plurality of groups of said expansion and contraction blocks (2211) are fixedly connected with expansion and contraction rods (2212), the front and back sides of the inner walls of a plurality of groups of said expansion and contraction rods (2212) are slidably connected on the left and right sides of the outer walls of a plurality of groups of said columnar cross guide rods (226), the front and back sides of the outer sides of a plurality of groups of said expansion and contraction rods (2212) are fixedly connected with clamping blocks (2213), the front and back sides of the bottom of a plurality of groups of said clamping blocks (2213) are slidably connected on the top inner wall of a plurality of groups of said guide cross rods (223).

9. The straightness laser detection device for high strength agricultural propeller shaft production according to claim 1, characterized in that: The pushing piece (23) comprises a pushing piece transmission rod connecting block (231), the bottom of the pushing piece transmission rod connecting block (231) is fixedly connected to the front side of the top of the front connecting plate (2119), the inner wall of the pushing piece transmission rod connecting block (231) is rotationally connected with a pushing piece transmission rod (232), the left end of the pushing piece transmission rod (232) is fixedly connected with a rotating disc (235), the right end of the pushing piece transmission rod (232) is fixedly connected with a second bevel gear (233), the outer wall of the second bevel gear (233) is engaged with the outer wall of the bevel gear (21111), the front side of the outer side of the rotating disc (235) is fixedly connected with an abutting block (234), the outer wall of the abutting block (234) is sleeved with an oval sleeve block (236), the front side of the middle of the oval sleeve block (236) is fixedly connected with an L-shaped push-pull top plate (237), the right side of the L-shaped push-pull top plate (237) is fixedly connected with a vertical L-shaped pushing plate (238), the bottom of the vertical L-shaped pushing plate (238) is slidingly connected to the front side of the inner wall of the feeding port (15), and the outer wall bottom of the L-shaped push-pull top plate (237) is slidingly connected to the top of the L-shaped guide vertical plate (115).

10. The straightness laser detection device for producing a high-strength agricultural transmission shaft according to claim 9, characterized by: The method comprises the following steps: Step one: the agricultural transmission shaft is conveyed to the inner side of the conveying table (13) through the feeding conveying table (16) and the feeding port (15) of the conveying table (13), when there is one transmission shaft in the inner side of the conveying table (13), the remaining transmission shafts on the top of the feeding conveying table (16) stop conveying; Step two: the motor (213) is started, the output end of the motor (213) drives the transmission disc (214) to rotate, the transmission disc (214) drives the second transmission disc (216) to synchronously rotate through the track (215); Step three: the second transmission disc (216) drives the columnar rotating rod (2117) to rotate, the bevel gear (21111) at the front end of the columnar rotating rod (2117) drives the second bevel gear (233) engaged therewith to rotate; Step four: the rotation of the second bevel gear (233) drives the pushing piece transmission rod (232) to rotate, drives the rotating disc (235) to rotate, and the abutting block (234) on the outer side of the rotating disc (235) pushes the vertical L-shaped pushing plate (238) to push the transmission shaft in the inner side of the conveying table (13) to the bottom of the taking piece (22); Step five: the rotation of the columnar rotating rod (2117) drives the transmission gear disc (2114) to rotate through the inner rotating block (2113), the transmission gear disc (2114) drives the gear disc (2110) to rotate through the gear (2116), drives the whole taking piece (22) to rotate, and one of the taking pieces (22) is rotated to the bottom; Step six: the electric push rod (227) is started, the expansion block (2211) is pulled to slide, the expansion rod (2212) drives the clamping block (2213) to slide on the guide cross rod (223), and the transmission shaft is clamped firmly. Step seven: continue to start the motor (213), the completed pickup piece (22) at the bottom of the transmission shaft rotates one body position, the feeding conveyor (16) continues to convey the next transmission shaft into the conveying table (13), and the next pickup piece (22) rotates to the bottom to repeat the pushing and clamping action; Step eight: control the main part (110) to start, drive all straightness laser detection heads (112) to emit laser beams synchronously through the connecting vertical rod (111), when the pickup piece (22) carrying the transmission shaft rotates to the detection station, the control main part (110) processes data, analyzes the detection results, if the detection value exceeds the preset tolerance range, triggers the alarm device and marks the unqualified product serial number; Step nine: multiple pickup pieces (22) continue to rotate, the transmission shaft passes through multiple straightness laser detection heads (112) to form multi-angle detection coverage, the control main part (110) synchronously collects the reflection signals of all detection heads, generates a high-precision contour model, and compares with the standard shaft type database to identify the defect type; Step ten: the rotation speed of the pickup piece (22) and the laser scanning frequency are dynamically matched to ensure that each cross section obtains multiple measurement points, meeting the detection resolution requirement.

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