Crankshaft precision detection device based on visual analysis

Abstract

The invention relates to the technical field of crankshaft detection, and discloses a crankshaft precision detection device based on visual analysis, which comprises a base, the upper end of the base is fixedly connected with a support frame, the support frame is connected with a motor for driving a crankshaft to rotate, the upper end of the base is slidably connected with a connecting plate, and one side of the connecting plate is connected with a limiting frame. A sliding block is slidably connected into the limiting frame, a camera shooting assembly is connected to the sliding block, a telescopic rod is slidably connected into the sliding block, scales are arranged on the telescopic rod, a pointer is connected to the sliding block, and a spring plate is connected to the telescopic rod. According to the invention, a camera shooting assembly structure is adopted, visual analysis of crankshaft precision is realized by using a camera shooting assembly, the inspection precision is further improved, comparison with a crankshaft standard size is more visual, the device can carry out precision detection on crankshafts of different sizes through a replaceable rack structure and a telescopic rod structure moving towards the crankshaft during detection, and the detection precision is improved. And the detection applicability of different crankshafts is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of crankshaft detection, and in particular to a crankshaft accuracy detection device based on visual analysis. Background Art

[0002] Crankshaft precision detection is extremely important. The accuracy of size, shape and position affects engine performance. Traditionally, measuring tools can be used to measure dimensions, etc. Visual analysis uses industrial cameras to capture images, and obtains data such as crankshaft contours through algorithm processing. It can quickly and accurately detect, efficiently determine whether standards are met, and discover defects in a timely manner.

[0003] In the field of mechanical manufacturing, crankshaft precision detection has always been a key link to ensure engine performance. In the field of crankshaft precision detection, traditional detection technology has many drawbacks. Previous detection equipment is often designed only for specific types of crankshafts. When faced with crankshafts of different specifications and shapes, the adaptability is poor, and it is necessary to frequently replace the entire set of detection equipment or perform complex debugging work, which not only increases the detection cost, but also seriously affects the detection efficiency. Moreover, the key detection structure of traditional detection equipment is usually fixedly installed. Once it is worn or needs to be upgraded to adapt to the new detection standards, the replacement process is extremely cumbersome, and professional technicians often need to spend a lot of time to disassemble and reinstall. In addition, there is a lack of effective automated coordination mechanism between the various detection links, which makes it easy to make operational errors and confusion in the detection sequence, resulting in the accuracy and reliability of the detection results. It is difficult to guarantee.

[0004] Based on this, a crankshaft accuracy detection device based on visual analysis is proposed. Summary of the invention

[0005] The purpose of the present invention is to solve the above-mentioned problem and to propose a crankshaft accuracy detection device based on visual analysis.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: A crankshaft accuracy detection device based on visual analysis comprises a base, an upper end of which is fixedly connected to a support frame, and a motor is connected to the support frame to drive the crankshaft to rotate; The upper end of the base is slidably connected to a connecting plate, one side of the connecting plate is connected to a limit frame, a slider is slidably connected in the limit frame, a camera assembly is connected to the slider, a telescopic rod is slidably connected in the slider, a scale is provided on the telescopic rod, a pointer is connected to the slider, a spring disk is connected to the telescopic rod, one side of the spring disk is connected to a detection spring, and the other end of the detection spring is connected to the slider; The connecting plate is connected with a transmission mechanism which first drives the connecting plate to move and then drives one end of the telescopic rod to abut against the outer side of the crankshaft to complete the precision detection.

[0007] Preferably, a slide rail is connected to the upper end of the base, a slide clamp is slidably connected to the slide rail, and the slide clamp is fixedly connected to the lower end of the connecting plate.

[0008] Preferably, a horizontal groove is formed on the limiting frame, the camera assembly is slidably connected to the horizontal groove, and the camera part of the camera assembly is arranged opposite to the telescopic rod.

[0009] Preferably, one end of the telescopic rod is rotatably connected to an abutment wheel, and the abutment wheel is horizontally arranged opposite to the crankshaft.

[0010] Preferably, the transmission mechanism comprises a second cylinder, the second cylinder is fixedly connected to the connecting plate through a second fixing frame, a push bar is connected between the telescopic end of the second cylinder and the slider, and the push bar is rotatably connected to the outer side of the slider; The connecting plate is connected with a connecting block, a sliding groove is provided on the connecting plate, a clamping block is slidably connected to the sliding groove, a lifting block is connected to the clamping block, an abutting rod, a lifting rod and a deflection shaft are connected to the lifting block, a lifting spring is connected between the connecting block and the lifting block, a deflection plate and a nut are connected to the deflection shaft, and the lifting block is arranged directly below the sliding column; The base is connected with a placement bar, the placement bar is connected with a limiting column, and the limiting column is connected with a rack.

[0011] Preferably, a driving shaft is connected to the outer side of the sliding block, the driving bar is rotatably connected to the driving shaft, and the driving bar is slidably connected to the connecting plate.

[0012] Preferably, a vertical groove is formed on the connecting plate, one end of the pushing bar is connected to a sliding column, the sliding column is slidably connected to the vertical groove, and the two telescopic ends of the cylinder are rotatably connected to the sliding column through a sleeve.

[0013] Preferably, the base is connected to a fixing frame 1, the fixing frame 1 is connected to a cylinder 1, the telescopic end of the cylinder 1 is connected to a reset plate, and the reset plate is arranged on the same horizontal plane as the deflection plate.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. The present application adopts a camera component structure and uses the camera component to realize visual analysis of crankshaft accuracy, thereby further improving inspection accuracy and making comparison with the standard size of the crankshaft more intuitive. Through a replaceable rack structure and a telescopic rod structure that moves toward the crankshaft during inspection, the device can perform accuracy inspections on crankshafts of different sizes, thereby improving the applicability of different crankshaft inspections and facilitating structural switching before different crankshaft inspections.

[0015] 2. The present application adopts a cylinder two structure and utilizes the expansion and contraction of cylinder two to perform detection and displacement alternately, so that the detection of different parts of the crankshaft can be carried out in an orderly manner to avoid the problem of missed detection. After the detection is completed, the device structure can automatically reset. In conjunction with the crankshaft automatic installation and disassembly equipment, an automated detection process for the crankshaft accuracy can be realized, greatly improving the crankshaft detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the overall structure of a detection device provided in an embodiment of the present invention is shown; Figure 2 A schematic structural diagram of a sleeve connection provided by an embodiment of the present invention is shown; Figure 3 A schematic diagram of an exploded structure of a rack connection provided according to an embodiment of the present invention is shown; Figure 4 A schematic diagram of an exploded structure of a deflection plate connection provided by an embodiment of the present invention is shown; Figure 5 A schematic diagram of the explosion structure of the lifting block connection provided according to an embodiment of the present invention is shown; Figure 6 A schematic structural diagram of the connection of a camera assembly provided according to an embodiment of the present invention is shown.

[0017] Legend: 1. Base; 2. Fixed frame 1; 3. Cylinder 1; 4. Reset plate; 5. Slide rail; 6. Support frame; 7. Motor; 8. Sliding clamp; 9. Connecting plate; 10. Limiting frame; 11. Cylinder 2; 12. Vertical slot; 13. Rack; 14. Placement bar; 15. Limiting column; 16. Fixed frame 2; 17. Sleeve; 18. Sliding column; 19. Horizontal slot; 20. Lifting block; 21. Deflection plate; 22. Abutment rod; 23. Deflection shaft; 24. Nut; 25. Lifting rod; 26. Lifting spring; 27. Connecting block; 28. Pushing bar; 29. ​​Sliding block; 30. Slide slot; 31. Block; 32. Telescopic rod; 33. Camera assembly; 34. Scale; 35. Pushing shaft; 36. Abutment wheel; 37. Detection spring; 38. Spring disk; 39. Pointer. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figure 1-Figure 6, the present invention provides a technical solution: The crankshaft accuracy detection device based on visual analysis includes a base 1, a support frame 6 is fixedly connected to the upper end of the base 1, a motor 7 for driving the crankshaft to rotate is connected to the support frame 6, the output end of the motor 7 can be connected to one end of the crankshaft, and the operation of the motor 7 can drive the crankshaft to rotate at a low speed, thereby completing the dimensional accuracy detection of each cam on the crankshaft; The upper end of the base 1 is slidably connected to a connecting plate 9, the connecting plate 9 and the base 1 are perpendicular to each other, one side of the connecting plate 9 is connected to a limit frame 10, a slider 29 is slidably connected in the limit frame 10, the limit frame 10 structure is horizontally arranged, and the structure provides a track for the slider 29 to slide horizontally, and a camera assembly 33 is connected to the slider 29, and the camera assembly 33 includes a series of structures such as a lens and a light source, which can image the data accuracy information on the image sensor through an optical system, and a telescopic rod 32 is slidably connected in the slider 29, and the telescopic rod 32 is connected to the slider 29 through and through, and the telescopic rod 32 structure is horizontally arranged, and the camera assembly 33 is mainly The telescopic state of the telescopic rod 32 is recorded. A scale 34 is provided on the telescopic rod 32. The precision of the scale 34 is related to the test precision of the crankshaft. A pointer 39 is connected to the slider 29. The pointer 39 can assist the camera assembly 33 in capturing the telescopic dynamic state of the telescopic rod 32, thereby improving the test precision. A spring disk 38 is connected to the telescopic rod 32. A detection spring 37 is connected to one side of the spring disk 38. The other end of the detection spring 37 is connected to the slider 29. The detection spring 37 is sleeved on the telescopic rod 32. By setting the detection spring 37, the abutment wheel 36 can stably abut against the crankshaft during detection, thereby increasing the detection range of the crankshaft size. The connecting plate 9 is connected to a transmission mechanism which first drives the connecting plate 9 to move and then drives one end of the telescopic rod 32 to abut against the outside of the crankshaft to complete the precision detection. The connecting plate 9 thereby drives the telescopic rod 32 to move, changes the position of the telescopic rod 32 on the crankshaft for detection, and then relies on one end of the telescopic rod 32 to abut against the crankshaft. As the crankshaft rotates, the telescopic rod 32 is driven to extend and retract horizontally, thereby completing the detection of the crankshaft size, making it convenient to compare with the standard size and understand the accuracy deviation of the crankshaft.

[0020] Specifically, Figure 1 As shown, a slide rail 5 is connected to the upper end of the base 1, a slide clamp 8 is slidably connected to the slide rail 5, and the slide clamp 8 is fixedly connected to the lower end of the connecting plate 9. The sliding clamp 8 is provided to improve the sliding stability of the connecting plate 9 on the base 1.

[0021] Specifically, Figure 5 and Figure 6As shown, a horizontal groove 19 is opened on the limit frame 10, and the camera assembly 33 is slidably connected to the horizontal groove 19. The camera part of the camera assembly 33 is arranged opposite to the telescopic rod 32. The horizontal groove 19 is used to limit the structure of the camera assembly 33, thereby limiting the sliding of the slider 29 to avoid separation between the slider 29 and the limit frame 10.

[0022] Specifically, Figure 6 As shown, one end of the telescopic rod 32 is rotatably connected to an abutment wheel 36, and the abutment wheel 36 is horizontally arranged opposite to the crankshaft. By setting the abutment wheel 36, the structural wear of the structure abutting against the outer side of the crankshaft can be greatly reduced, making the detection process smoother and improving the accuracy of the detection data.

[0023] Specifically, Figure 3 and Figure 5 As shown, the transmission mechanism includes a cylinder 11, which is fixedly connected to the connecting plate 9 through a fixing frame 16. The fixing frame 16 ensures the firmness of the structural connection of the cylinder 11, wherein the structure of the cylinder 11 is in a vertical state, and the telescopic state is downward telescopic. A push bar 28 is connected between the telescopic end of the cylinder 11 and the slider 29. When the cylinder 11 is telescopic, its structure will deflect, and the push bar 28 is rotatably connected to the outside of the slider 29. The push bar 28 is used to move the structure to push the slider 29 to move in the limit frame 10; The connecting plate 9 is connected to a connecting block 27, and a slide groove 30 is provided on the connecting plate 9. The slide groove 30 is vertically arranged. A card block 31 is slidably connected to the slide groove 30, and a lifting block 20 is connected to the card block 31. When the card block 31 slides along the slide groove 30, it can synchronously drive the lifting block 20 to move up and down. The lifting block 20 is connected to an abutment rod 22, a lifting rod 25 and a deflection shaft 23. The abutment rod 22 is horizontally arranged, and the lifting rod 25 is vertically arranged. The lifting rod 25 is connected to the connecting block 27. The connecting block 27 is used to limit the lifting rod 25, so as to improve the lifting and lowering of the lifting block 20. Stability, a lifting spring 26 is connected between the connecting block 27 and the lifting block 20. The lifting spring 26 can drive the lifting block 20 to rise in height when it is not subjected to force, so that one side of the deflection plate 21 and the abutment rod 22 abut against each other. When the two structures abut against each other, the deflection plate 21 is inclined at a small angle, which is the angle between the deflection plate 21 and the vertical plane. The deflection shaft 23 is connected with the deflection plate 21 and the nut 24. By setting the nut 24, the deflection plate 21 can be replaced, thereby realizing the adjustment of different moving distances of the connecting plate 9. The lifting block 20 is arranged directly below the sliding column 18; The base 1 is connected with a placement bar 14, the placement bar 14 is connected with a limiting column 15, the limiting column 15 is connected with a rack 13, the rack 13 can be installed on the placement bar 14 by buckling, and different racks 13 correspond to different crankshaft detections.

[0024] Specifically, Figure 5 As shown, a driving shaft 35 is connected to the outer side of the slider 29 , the driving bar 28 is rotatably connected to the driving shaft 35 , the driving bar 28 is slidably connected to the connecting plate 9 , and one end of the driving bar 28 is slidably connected to one side of the connecting plate 9 .

[0025] Specifically, Figure 2 and Figure 5 As shown, a vertical groove 12 is opened on the connecting plate 9, and a sliding column 18 is connected to one end of the pushing bar 28. The sliding column 18 is slidably connected to the vertical groove 12. The telescopic end of the cylinder 2 11 is rotatably connected to the sliding column 18 through a sleeve 17. The sliding column 18 structure is limited by the vertical groove 12, and the sleeve 17 structure is provided to reduce the wear of the structural transmission and improve the stability of the transmission.

[0026] Specifically, Figure 1 As shown, the base 1 is connected to a fixing frame 2, the fixing frame 2 is connected to a cylinder 3, the telescopic end of the cylinder 3 is connected to a reset plate 4, the reset plate 4 is arranged on the same horizontal plane as the deflection plate 21, and the connecting plate 9 can automatically complete the reset after detecting the movement by relying on the cylinder 3 and the reset plate 4, and the operating condition of the cylinder 3 is that the connecting plate 9 moves to one end of the slide rail 5 close to the reset plate 4. During actual assembly, the current grating structure can be used to determine the telescopic timing of the cylinder 3, and the telescopic operation of the cylinder 3 is uninterrupted, that is, the contraction and extension of the cylinder 3 are completed in sequence without any pause time, and after being extended to the maximum state, the cylinder 3 stops operating until the telescopic condition is triggered again.

[0027] To sum up, the crankshaft accuracy detection device based on visual analysis provided in this embodiment, since the crankshaft plays a key role in mechanical equipment such as engines, its accuracy has an important impact on the performance, reliability and life of the equipment. When the crankshaft needs to be accurately detected, the operator needs to place the crankshaft on the support frame 6, and connect one end of the crankshaft with the output end of the motor 7, so that the motor 7 can drive the crankshaft to rotate.

[0028] After the crankshaft is installed before inspection, the operator needs to start cylinder 2 11 and camera assembly 33. Camera assembly 33 can observe the extension and retraction of telescopic rod 32, so as to capture and transmit the extension and retraction data through the optical imaging system on camera assembly 33, so that the size information of the crankshaft during rotation is optically imaged on the image sensor, and then transmitted to the processing terminal, and the actual size and shape deviation of the crankshaft are determined through image preprocessing, edge detection, feature extraction and matching. This part is the visual analysis process of the device, and the technical principle is the existing technology, which will not be elaborated here.

[0029] After the cylinder 2 11 is started, the cylinder 2 11 will be in a reciprocating extension state, but the extension and retraction of the cylinder 2 11 and the operation of the motor 7 and the extension and retraction of the cylinder 1 3 are performed alternately, that is, when the cylinder 2 11 is extended and retracted, the motor 7 and the cylinder 1 3 will not operate, and only one of the three structures is allowed to operate at a time; When the cylinder 2 11 contracts, the cylinder 2 11 can pull the slide post 18 to slide along the vertical groove 12. At this time, the slide post 18 cooperates with the push bar 28 to push the slider 29 to slide in the limit frame 10. At this time, the abutment wheel 36 connected to the slider 29 will move toward the crankshaft direction. When the abutment wheel 36 contacts the outer side of the crankshaft, the cylinder 2 11 continues to contract and the slider 29 continues to slide, but the telescopic rod 32 stops moving. At this time, the detection spring 37 is compressed. When the cylinder 2 11 contracts to the maximum extent, the motor 7 starts to operate. At the same time, the camera assembly 33 operates synchronously. As the crankshaft rotates, the telescopic rod 32 is pushed by the cam structure on the crankshaft to move horizontally. At this time, the data of the scale 34 pointed to by the pointer 39 changes. The camera assembly 33 records the data changes, which is convenient for subsequent visual analysis to understand the accuracy of the cam size at this position on the crankshaft. After the crankshaft rotates one circle, the motor 7 stops running, the camera assembly 33 stops running, and the cylinder 2 11 starts to extend to drive the corresponding structure to reset.

[0030] When the height of the slide column 18 drops to touch the lifting block 20, the slide column 18 continues to drop and can push the lifting block 20 to drop in height. During this process, the block 31 slides downward along the slide slot 30, and the lifting spring 26 structure is stretched. When the lifting block 20 drops to the lower end of the deflection plate 21 abuts against the rack 13, as the lifting block 20 continues to drop, the rack 13 can push the deflection plate 21 to deflect, thereby pushing the lifting block 20 to move along the slide rail 5, wherein the tooth tip structure on the rack 13 is in the direction away from the fixed frame 1 2. When the cylinder 2 11 is extended to the maximum distance, the sliding clamp 8 completes a horizontal sliding along the slide rail 5, thereby changing the horizontal position of one end of the telescopic rod 32 pointing to the crankshaft, which is convenient for the next size detection of the adjacent cam structure on the crankshaft.

[0031] For precision detection of irregular crankshafts, racks 13 of different sizes can be set to achieve the effect of driving the telescopic rod 32 to move. When the toothed structure on the rack 13 is adapted to the adjacent cam on the crankshaft, precision detection of the irregular crankshaft can be achieved. The rack 13 adopts a detachable structure, which improves the applicability of the device to different crankshaft detection.

[0032] The distance that the connecting plate 9 moves along the slide rail 5 due to the single extension of the cylinder 11 is related to the size of the deflection plate 21. When the deflection plate 21 is vertical, the longer its vertical length is, the longer the distance that the sliding clamp 8 is pushed to slide by the rack 13 after the structure is deflected. In order to avoid the problem that when the deflection plate 21 is in a vertical state, its lower end contacts the rack 13 and blocks the deflection plate 21 from moving further downward, an abutment rod 22 structure is provided. When one side of the deflection plate 21 contacts the abutment rod 22, the deflection plate 21 is arranged obliquely downward, ensuring that the deflection plate 21 moves in an oblique downward structure when descending.

[0033] When cylinder 2 11 is extended to the maximum distance, cylinder 2 11 will immediately contract, so as to carry out the next crankshaft dimensional accuracy inspection. Only when connecting plate 9 moves to the end where rack 13 is far away from fixed frame 1 2, cylinder 1 3 starts to contract, and cylinder 2 11 stops running. The alternating operation of cylinder 1 3 and cylinder 2 11 is related to the position of connecting plate 9. It is necessary to meet the requirement that connecting plate 9 moves to the end of rack 13. At this time, the device completes the dimensional accuracy inspection of each cam structure on the crankshaft. When the reset plate 4 contracts and moves with the cylinder 3, one side of the reset plate 4 is clamped on the deflection plate 21, wherein the lower end of the deflection plate 21 is a hook-shaped structure. When the reset plate 4 is clamped on the deflection plate 21, the deflection plate 21 can be pushed to move, so that the sliding clamp 8 and the connecting plate 9 are reset, and the connecting plate 9 is moved to the initial detection position at the other end. Then the cylinder 3 is extended, the reset plate 4 structure is reset, and the connecting plate 9 structure is also reset, waiting for the operator to place another crankshaft to be tested on the support frame 6.

[0034] This setting can realize the automatic inspection of the crankshaft through the crankshaft automatic placement structure, so that the crankshaft can automatically complete the installation before inspection, the disassembly after inspection and the installation of the next crankshaft to be tested, thereby realizing the automatic inspection of the crankshaft, greatly improving the efficiency of crankshaft inspection, and realizing automatic crankshaft precision inspection.

[0035] The above description of the embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A crankshaft accuracy detection device based on visual analysis, comprising a base (1), characterized in that: A support frame (6) is fixedly connected to the upper end of the base (1), and a motor (7) is connected to the support frame (6) for driving the crankshaft to rotate; The upper end of the base (1) is slidably connected to a connecting plate (9), one side of the connecting plate (9) is connected to a limit frame (10), a slider (29) is slidably connected inside the limit frame (10), a camera assembly (33) is connected to the slider (29), a telescopic rod (32) is slidably connected inside the slider (29), a scale (34) is provided on the telescopic rod (32), a pointer (39) is connected to the slider (29), a spring disk (38) is connected to the telescopic rod (32), one side of the spring disk (38) is connected to a detection spring (37), and the other end of the detection spring (37) is connected to the slider (29); The connecting plate (9) is connected to a transmission mechanism which first drives the connecting plate (9) to move and then drives one end of the telescopic rod (32) to abut against the outer side of the crankshaft to complete the accuracy detection.

2. The crankshaft accuracy detection device based on visual analysis according to claim 1, characterized in that: The upper end of the base (1) is connected to a slide rail (5), the slide rail (5) is slidably connected to a slide clamp (8), and the slide clamp (8) is fixedly connected to the lower end of the connecting plate (9).

3. The crankshaft accuracy detection device based on visual analysis according to claim 1, characterized in that: The limiting frame (10) is provided with a horizontal groove (19), the camera assembly (33) is slidably connected to the horizontal groove (19), and the camera portion of the camera assembly (33) is arranged opposite to the telescopic rod (32).

4. The crankshaft accuracy detection device based on visual analysis according to claim 1, characterized in that: One end of the telescopic rod (32) is rotatably connected to an abutment wheel (36), and the abutment wheel (36) is horizontally arranged opposite to the crankshaft.

5. The crankshaft accuracy detection device based on visual analysis according to claim 1, characterized in that: The transmission mechanism comprises a second cylinder (11), wherein the second cylinder (11) is fixedly connected to the connecting plate (9) via a second fixing frame (16), a push bar (28) is connected between the telescopic end of the second cylinder (11) and the slider (29), and the push bar (28) is rotatably connected to the outer side of the slider (29); The connecting plate (9) is connected to a connecting block (27), a sliding groove (30) is provided on the connecting plate (9), a clamping block (31) is slidably connected to the sliding groove (30), a lifting block (20) is connected to the clamping block (31), a contact rod (22), a lifting rod (25) and a deflection shaft (23) are connected to the lifting block (20), a lifting spring (26) is connected between the connecting block (27) and the lifting block (20), a deflection plate (21) and a nut (24) are connected to the deflection shaft (23), and the lifting block (20) is arranged directly below the sliding column (18); The base (1) is connected to a placement bar (14), the placement bar (14) is connected to a limiting column (15), and the limiting column (15) is connected to a rack (13).

6. The crankshaft accuracy detection device based on visual analysis according to claim 5, characterized in that: The outer side of the slider (29) is connected to a driving shaft (35), the driving bar (28) is rotatably connected to the driving shaft (35), and the driving bar (28) is slidably connected to the connecting plate (9).

7. The crankshaft accuracy detection device based on visual analysis according to claim 6, characterized in that: A vertical groove (12) is formed on the connecting plate (9), one end of the pushing bar (28) is connected to a sliding column (18), the sliding column (18) is slidably connected to the vertical groove (12), and the telescopic end of the second cylinder (11) is rotatably connected to the sliding column (18) through a sleeve (17).

8. The crankshaft accuracy detection device based on visual analysis according to claim 1, characterized in that: The base (1) is connected to a fixing frame 1 (2), the fixing frame 1 (2) is connected to a cylinder 1 (3), the telescopic end of the cylinder 1 (3) is connected to a reset plate (4), and the reset plate (4) is arranged on the same horizontal plane as the deflection plate (21).

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