Vehicle body chassis spraying detection system and vehicle production line

Abstract

The utility model discloses a vehicle body chassis spraying detection system and a vehicle production line. The vehicle body chassis spraying detection system comprises a vehicle body conveying line, and the vehicle body conveying line is provided with a spraying area, a detection area and an analysis area; the spraying area is used for spraying the vehicle body chassis; an encoder, a transmission wheel, a starting switch and cameras are arranged in the detection area, the encoder is in communication connection with the cameras, the encoder is provided with a rotating gear, when the vehicle body conveying line drives the vehicle body to move to the detection area, the starting switch is turned on, and the transmission wheel drives the rotating gear to rotate; the encoder sequentially sends shooting signals to the cameras in the conveying direction of the vehicle body conveying line according to the number of turns of rotation of the rotating gear; the analysis area is provided with an image processing device and a display screen, the image processing device is in communication connection with the display screen and the camera, and the image processing device is used for receiving pictures shot by the camera, processing the pictures and sending the processed pictures to the display screen. The vehicle body chassis detection device can comprehensively detect the vehicle body chassis and is high in detection precision.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle production, in particular to a vehicle body chassis spraying detection system and a vehicle production line. Background Art

[0002] Cars are the most expensive and complex commodities in the public family. With the improvement of people's living standards, the requirements for cars are also increasing. The quality of automobile products is the most important indicator, and the quietness and waterproofness of the car body are the key performance parameters of the car body quality. The PVC (Polyvinyl chloride) coating of the car body chassis is the key spray sealing material for noise reduction and waterproofing at the bottom of the car body, and is the key quality project of the car body.

[0003] In various automobile factories, after the PVC paint is sprayed, the quality inspection of the PVC spraying of the body chassis is usually carried out by manual inspection or automated inspection by inspection equipment.

[0004] There are two technical difficulties in the spraying of PVC on the chassis of the vehicle: 1. There are many spraying parts, and the spraying length of the whole vehicle is more than 70 meters; 2. The spraying precision is high, and the welds need to be completely sealed, and no exposure is allowed. The precision requirement is 1mm. The real-time inspection of the PVC spraying on the chassis of the vehicle by manual inspection needs to be carried out during the automobile production cycle. The conventional automobile production cycle is about 60s / unit. It is required that manual inspection of many spraying parts be carried out with high precision in such a short time, and the problem of missed inspection often occurs; the inspection equipment is used to inspect the PVC spraying on the chassis of the vehicle. Due to the long body, the inspection equipment is limited to only a few parts, and it is impossible to conduct full coverage inspection on the chassis of the vehicle. In order to increase the coverage rate, a large number of inspection equipment needs to be deployed, which is costly. Utility Model Content

[0005] The main purpose of the utility model is to provide a vehicle chassis spraying detection system and a vehicle production line, aiming to solve the problems of missed detection and low detection coverage in the PVC detection process of the vehicle chassis in the prior art.

[0006] In order to achieve the above-mentioned purpose, the utility model proposes a vehicle chassis spraying detection system;

[0007] A vehicle body conveyor line, wherein a spraying area, a detection area and an analysis area are sequentially arranged in the conveying direction of the vehicle body conveyor line, and the vehicle body conveyor line is used to convey the vehicle body through the spraying area, the detection area and the analysis area sequentially along the conveying direction of the vehicle body conveyor line;

[0008] The spraying area is used to spray the chassis of the vehicle body;

[0009] The detection area is provided with an encoder, a transmission wheel, a start switch and a camera. The number of the cameras is multiple, and the multiple cameras are arranged in the detection area at intervals along the transportation direction of the vehicle body conveyor line. The encoder is in communication connection with the camera, and the encoder has a rotating gear, which is meshed with the transmission wheel. When the vehicle body conveyor line drives the vehicle body to move to the detection area, the start switch is turned on, and the transmission wheel drives the rotating gear to rotate. The encoder sends shooting signals to the cameras in sequence along the transportation direction of the vehicle body conveyor line according to the number of revolutions of the rotating gear.

[0010] The analysis area is provided with an image processing device and a display screen. The image processing device is respectively connected to the display screen and the camera for communication. The image processing device is used to receive pictures taken by the camera and send the pictures to the display screen after processing.

[0011] In one embodiment, the plurality of cameras are arranged in a staggered manner along the transport direction of the vehicle body conveyor line.

[0012] In one embodiment, the vehicle body chassis spraying detection system also includes a control cabinet, in which a converter is arranged, and the converter is communicatively connected to the encoder. The converter is used to obtain the travel distance of the vehicle body along the vehicle body conveyor line according to the number of rotations of the encoder, and send a shooting signal to the corresponding camera according to the travel distance.

[0013] In one embodiment, the detection area is further provided with a plurality of light-emitting elements, and the plurality of light-emitting elements are sequentially spaced apart along the transport direction of the vehicle body conveyor line.

[0014] In one embodiment, the detection area is further provided with a fixing frame, the number of the fixing frames is two, and the two fixing frames are arranged at intervals on both sides of the vehicle body conveyor line, wherein one end of some of the light-emitting components is installed on one fixing frame, and one end of the remaining light-emitting components is installed on another fixing frame, and any two adjacent light-emitting components are installed on different fixing frames respectively.

[0015] In one embodiment, the detection area is also provided with a pressure spring, the rotating gear is connected with an abutment arm, the abutment arm is coaxially arranged with the rotating gear and can rotate relatively, and one end of the abutment arm away from the rotating gear abuts against the pressure spring and compresses the pressure spring.

[0016] In one embodiment, a start switch is arranged at one end of the detection zone close to the spraying zone, and an end switch is also arranged at one end of the detection zone away from the spraying zone.

[0017] In one embodiment, the spraying area is formed by two spraying assemblies spaced apart on both sides of the vehicle body conveyor line, and the spraying assemblies include a mounting seat and a plurality of spray guns, and the plurality of spray guns are spaced apart and installed on the corresponding mounting seats along the transport direction of the vehicle body conveyor line.

[0018] In one embodiment, the body conveyor line includes a hanger and a conveyor rail extending along the transport direction of the body conveyor line, the hanger is slidably mounted on the conveyor rail, and the conveyor rail is used to drive the hanger to move along the transport direction of the body conveyor line.

[0019] In addition, the utility model also discloses a vehicle production line, which includes the above-mentioned vehicle body chassis spraying detection system.

[0020] In the technical solution of the utility model, a body conveyor line and a spraying area, a detection area and an analysis area arranged in sequence along the transport direction of the body conveyor line are set, and the body passes through the spraying area, the detection area and the analysis area in sequence along the body conveyor line, so that the spraying area sprays the chassis of the body, and an encoder, a transmission wheel, a start switch and multiple cameras are set in the detection area, so that the start switch starts the transmission wheel, and the transmission wheel drives the rotating gear of the encoder to rotate, so that the encoder sends a shooting signal to multiple cameras along the transport direction of the body conveyor line. The camera sends the captured picture to the image processing device set in the analysis area for analysis, and sends the image after analysis to the display screen to complete the inspection of the body chassis spraying, which can detect the poor quality of the entire body chassis after spraying, such as glue breaking, offset, additional adhesion, etc., to achieve comprehensive inspection of the body chassis, and compared with the inspection method of manual naked eye inspection, the accuracy and efficiency of the inspection of the body chassis spraying are increased, the body quality is improved and the production rhythm is accelerated. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0022] Figure 1 A structural schematic diagram of a vehicle chassis spraying detection system in one embodiment of the utility model;

[0023] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure of AA;

[0024] Figure 3A schematic diagram of the structure of a light emitting element, a fixing frame and a camera in an embodiment of the utility model;

[0025] Figure 4 The figure is a schematic structural diagram of a rotating gear, a transmission wheel and a pressure spring in one embodiment of the utility model.

[0026] Description of Figure Numbers:

[0027] 100. Body chassis spraying detection system; 200. Body conveyor line; 1. Spraying area; 2. Detection area; 3. Analysis area; 21. Encoder; 22. Transmission wheel; 23. Start switch; 24. Camera; 25. End switch; 211. Rotating gear; 31. Image processing device; 32. Display screen; 33. Control cabinet; 26. Light-emitting part; 27. Fixing bracket; 28. Pressure spring; 212. Abutment arm; 11. Mounting seat; 12. Spray gun; 4. Hanger; 5. Body.

[0028] The purpose, features and advantages of the present invention will be further described in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] It should be noted that if there are directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention, the directional indications are only used to explain the direction of the object in a specific posture (such as the attached Figures 1 to 4 ) The relative position relationship and movement status between the various components. If the specific posture changes, the directional indication will also change accordingly.

[0031] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0032] The utility model provides a vehicle body chassis spraying detection system and a vehicle production line.

[0033] See also Figures 1 to 4 In one embodiment of the utility model, a vehicle chassis spraying detection system 100 includes a vehicle body conveyor line 200, and a spraying area 1, a detection area 2 and an analysis area 3 are sequentially arranged in the transportation direction of the vehicle body conveyor line 200. The vehicle body conveyor line 200 is used to convey the vehicle body 5 through the spraying area 1, the detection area 2 and the analysis area 3 in sequence along the transportation direction of the vehicle body conveyor line 200; the spraying area 1 is used to spray the chassis of the vehicle body 5; the detection area 2 is provided with an encoder 21, a transmission wheel 22, a start switch 23 and a camera 24, and the number of the cameras 24 is multiple, and the multiple cameras 24 are arranged in the detection area 2 at intervals along the transportation direction of the vehicle body conveyor line 200, and the encoder 21 and the camera 2 4 is connected to the communication, the encoder 21 has a rotating gear 211, the rotating gear 211 is meshed with the transmission wheel 22, when the body conveyor line 200 drives the body 5 to move to the detection area 2, the start switch 23 is turned on, the transmission wheel 22 drives the rotating gear 211 to rotate, and the encoder 21 sends shooting signals to the camera 24 in sequence along the transportation direction of the body conveyor line 200 according to the number of circles of the rotating gear 211; the analysis area 3 is provided with an image processing device 31 and a display screen 32, the image processing device 31 is respectively connected to the display screen 32 and the camera 24 for communication, and the image processing device 31 is used to receive the picture taken by the camera 24 and send the picture to the display screen 32 after processing.

[0034] In the technical scheme of the above embodiment, the transportation direction of the body conveyor line 200 can be a straight direction, and the spraying area 1, the detection area 2 and the analysis area 3 are arranged in sequence and adjacent to each other along the straight direction. The body conveyor line 200 drives the body 5 to pass through the spraying area 1, the detection area 2 and the analysis area 3 in sequence along the transportation direction of the body conveyor line 200. A spray gun 12 can be provided in the spraying area 1. When the body 5 is driven by the spraying, the spray gun 12 sprays the chassis of the body 5 to complete the spraying of the body 5, such as PVC spraying of the chassis of the body 5. After the spraying is completed, the body 5 enters the detection area 2 from the spraying area 1 along the transportation direction of the body conveyor line 200.

[0035] The detection area 2 is used to detect the spraying condition of the chassis of the vehicle body 5. The detection area 2 is provided with an encoder 21, a transmission wheel 22, a start switch 23 and a camera 24. The encoder 21 can be an existing encoder 21. The encoder 21 has a rotating gear 211. The rotating gear 211 is meshed with the transmission wheel 22. When the transmission wheel 22 rotates, the transmission wheel 22 can drive the rotating gear 211 to rotate synchronously. The transmission wheel 22 can be driven by an electric motor or a hydraulic drive to rotate. The start switch 23 can be a travel switch, specifically a limit switch or an induction switch. When the vehicle body 5 enters the detection area 2, the start switch 23 detects the signal of the vehicle body 5 and starts. When the start switch 23 is turned on, the transmission wheel 22 can drive the rotating gear 211 to rotate, and the encoder 21 counts according to the number of revolutions of the rotating gear 211. For example, when the rotating gear 211 rotates one revolution, the encoder 21 counts as one, and when the rotating gear 211 rotates two revolutions, the encoder 21 counts as two. By analogy, there are multiple cameras 24, and the multiple cameras 24 are sequentially arranged in the detection area 2 along the transportation direction of the vehicle body conveyor line 200. The encoder 21 sends shooting signals to the cameras 24 in sequence along the transportation direction of the vehicle body conveyor line 200 according to the number of revolutions of the rotating gear 211. After the vehicle body 5 moves along the vehicle body conveyor line 200 so that the rotating gear 211 of the encoder 21 rotates a preset number of revolutions, the encoder 21 sends shooting signals to the cameras 24 in sequence. Figure 1The leftmost camera 24 sends a shooting signal. It can be understood that the preset number of revolutions can be one revolution, two revolutions or a fractional number of revolutions of the rotating gear 211, wherein the preset number of revolutions is determined according to the arrangement position of the camera 24. In addition, the preset number of revolutions of the rotating gear 211 for sending a signal each time can be different, which is set according to the distance between adjacent cameras 24 along the transportation direction of the vehicle body conveyor line 200. The vehicle body 5 continues to move along the vehicle body conveyor line 200. After the encoder 21 presets the distance again, the encoder 21 sends a shooting signal to the camera 24 on the right side of the previous camera 24. Similarly, when the vehicle body 5 enters the analysis area 3 from the detection area 2 along the transportation direction of the vehicle body conveyor line 200, the encoder 21 sends at least one shooting signal to all cameras 24. The camera 24 sends the captured picture to the image processing device 31 connected to it for communication. The image processing device 31 can be an existing computer or other special equipment, which is mainly used to analyze the pictures taken by the camera 24 to determine whether the spraying of the chassis of the vehicle body 5 has poor quality such as broken glue, offset, additional adhesion, etc., and send the analyzed image to the display screen 32 for the staff to watch, so as to complete the inspection of the chassis spraying of the vehicle body 5.

[0036] In the technical scheme of the above embodiment, a body conveyor line 200 and a spraying area 1, a detection area 2 and an analysis area 3 are arranged in sequence along the transportation direction of the body conveyor line 200, and the body 5 passes through the spraying area 1, the detection area 2 and the analysis area 3 in sequence along the body conveyor line 200, so that the spraying area 1 sprays the chassis of the body 5, and an encoder 21, a transmission wheel 22, a start switch 23 and multiple cameras 24 are set in the detection area 2, so that the start switch 23 starts the transmission wheel 22, and the transmission wheel 22 drives the rotating gear 211 of the encoder 21 to rotate, so that the encoder 21 sends shooting signals to the multiple cameras 24 along the transportation direction of the body conveyor line 200 respectively. The camera 24 sends the captured image to the image processing device 31 provided in the analysis area 3 for analysis, and sends the analyzed image to the display screen 32 to complete the detection of the chassis spraying of the vehicle body 5. The vehicle body chassis spraying detection system 100 in this embodiment analyzes the PVC spraying quality of the chassis of the vehicle body 5 by photographing the chassis of the vehicle body 5 to detect the broken glue, offset, and poor quality of the additional attached lights on the entire chassis of the vehicle body 5 after spraying, thereby realizing a comprehensive detection of the chassis of the vehicle body 5. Compared with the detection method of manual naked eye detection, the detection accuracy and detection efficiency of the chassis spraying of the vehicle body 5 are increased, the quality of the vehicle body 5 is improved, and the production rhythm is accelerated.

[0037] In one embodiment, the plurality of cameras 24 are arranged in a staggered manner along the transport direction of the vehicle body conveyor line 200. In this embodiment, the transport direction of the vehicle body conveyor line 200 may be a straight line direction, such as Figure 2As shown, the transport direction of the vehicle body conveyor line 200 extends in the left-right direction, and the cameras 24 are staggered along the transport direction of the vehicle body conveyor line 200. Since the chassis of the vehicle body 5 is not a whole plane, there are often some depressions in the chassis of the vehicle body 5. In order to ensure that the camera 24 can cover all parts of the chassis of the vehicle body 5, two, three or more cameras 24 can be staggered in the same left-right direction according to the actual situation of the chassis of the vehicle body 5, so as to ensure that the camera 24 can cover and photograph all positions of the chassis of the vehicle body 5, thereby increasing the detection accuracy of the vehicle body chassis spraying detection system 100 in this embodiment.

[0038] In one embodiment, the vehicle chassis spraying detection system 100 further includes a control cabinet 33, in which a converter is provided, and the converter is in communication connection with the encoder 21, and the converter is used to obtain the travel distance of the vehicle body 5 along the vehicle body conveyor line 200 according to the number of revolutions of the encoder 21, and send a shooting signal to the corresponding camera 24 according to the travel distance. In this embodiment, the control cabinet 33 can adopt an existing PLC (Programmable Logic Controller) control cabinet 33, and the number of revolutions of the encoder 21 is converted into the moving distance of the vehicle body conveyor line 200 through the converter, and the corresponding camera 24 is sent a shooting signal through the travel distance, which can increase the accuracy of the corresponding vehicle body 5 chassis part photographed by the camera 24 and reduce the shooting error.

[0039] In one embodiment, the detection area 2 is further provided with a plurality of light-emitting members 26, which are sequentially arranged at intervals along the transport direction of the vehicle body conveyor line 200. In this embodiment, the light-emitting members 26 can be existing line lights or LED (light-emitting diode) lights, and the light-emitting members 26 are used to illuminate the chassis of the vehicle body 5, so that the image taken by the setting head is clearer, so as to increase the accuracy of the detection.

[0040] Based on the above embodiment, the detection area 2 is further provided with a fixing frame 27, the number of the fixing frames 27 is two, and the two fixing frames 27 are arranged at intervals on both sides of the vehicle body conveyor line 200, wherein one end of some of the light-emitting components 26 is installed on one fixing frame 27, and one end of the remaining light-emitting components 26 is installed on the other fixing frame 27, and any two adjacent light-emitting components 26 are respectively installed on different fixing frames 27. In this embodiment, the two fixing frames 27 are arranged at intervals along the front-to-back direction, and by providing the fixing frames 27 and installing the light-emitting components 26 on the fixing frames 27, the installation height of the light-emitting components 26 can be adjusted so that the light-emitting components 26 can better illuminate the chassis of the vehicle body 5, wherein the camera 24 can be connected to the light-emitting components 26 by a bracket. Alternatively, the camera 24 can be installed by supporting it with a bracket and mounting it on the ground, and two adjacent light-emitting elements 26 can be respectively mounted on different fixing frames 27, so that the shadows between the two adjacent light-emitting elements 26 can be staggered. This helps to reduce the shadows produced by the chassis of the vehicle body 5 illuminated by the light-emitting elements 26, so as to improve the overall lighting uniformity and increase the clarity of the image captured by the camera 24.

[0041] In one embodiment, the detection area 2 is further provided with a pressure spring 28, and the rotating gear 211 is connected to an abutting arm 212, the abutting arm 212 is coaxially arranged with the rotating gear 211 and can rotate relatively, and one end of the abutting arm 212 away from the rotating gear 211 abuts against the pressure spring 28 and compresses the pressure spring 28. In this embodiment, the abutting arm 212 is coaxially arranged with the rotating gear 211, the abutting arm 212 has a rotation center, the rotation center of the rotating gear 211 is coaxial with the rotation center of the abutting arm 212, and the rotating gear is frictionally connected with the abutting arm 212, such as Figure 3 As shown, when the measuring section rotates clockwise, it drives the rotating gear 211 to rotate counterclockwise, and the rotating gear 211 drives the transmission arm to rotate counterclockwise. The rotating gear 211 abuts against and compresses the pressure spring 28. Since the rotating gear 211 is frictionally connected with the abutment arm 212, the abutment arm 212 can provide friction to the rotating gear 211, thereby preventing the rotating gear 211 in this embodiment from slipping during rotation.

[0042] In one embodiment, the start switch 23 is arranged at one end of the detection zone 2 close to the spraying zone 1, and the end of the detection zone 2 away from the spraying zone 1 is also provided with an end switch 25. In this embodiment, the end of the detection zone 2 close to the spraying zone 1 is the left end, and the end of the detection zone 2 away from the spraying zone 1 is the right end. The start switch 23 is arranged at one end of the detection zone 2 close to the spraying zone 1, so that after the vehicle body 5 enters the detection zone 2, the start switch 23 can quickly detect the signal of the vehicle body 5, and the space of the detection zone 2 is reasonably used. The end switch 25 is arranged at the right end of the detection zone 2. When the vehicle leaves the detection zone 2, the end switch 25 detects the signal of the vehicle body 5 and sends a signal. After receiving the signal, the vehicle body conveyor line 200 conveys the next vehicle body 5 into the spraying zone 1, so as to increase the degree of automation of the vehicle body chassis spraying detection system 100 in this embodiment.

[0043] In one embodiment, the spraying area 1 is formed by enclosing two spraying assemblies spaced apart on both sides of the vehicle body conveyor line 200, and the spraying assemblies include a mounting seat 11 and a plurality of spray guns 12, and the plurality of spray guns 12 are spaced apart and mounted on the corresponding mounting seats 11 along the transport direction of the vehicle body conveyor line 200. In this embodiment, the mounting seat 11 fixes and supports the spray guns 12, and the plurality of spray guns 12 are provided to ensure the coverage rate of the PVC spraying of the chassis of the vehicle body 5.

[0044] In other embodiments, the spraying area 1 may also use a mechanical arm or a spraying robot to spray the chassis of the vehicle body 5, which is not limited in the embodiments of this specification.

[0045] In one embodiment, the body conveyor line 200 includes a hanger 4 and a conveyor rail extending along the transport direction of the body conveyor line 200, and the hanger 4 is slidably mounted on the conveyor rail, and the conveyor rail is used to drive the hanger 4 to move along the transport direction of the body conveyor line 200. In this embodiment, the conveyor rail and the hanger 4 are used for conveying, which improves the stability during the conveying process and increases the degree of automation and production efficiency of the body chassis spraying detection system 100 in this embodiment. In other embodiments, a chain transmission system or a transmission belt system can also be used to transport the body 5, and this specification embodiment does not limit this.

[0046] In addition, the utility model also discloses a vehicle production line, which includes the above-mentioned body chassis spray inspection system 100. Since the vehicle production line adopts all the technical solutions of all the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here one by one.

[0047] The above are only exemplary embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect applications in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A vehicle chassis spraying detection system, characterized in that: include; A vehicle body conveyor line, wherein a spraying area, a detection area and an analysis area are sequentially arranged in the conveying direction of the vehicle body conveyor line, and the vehicle body conveyor line is used to convey the vehicle body through the spraying area, the detection area and the analysis area sequentially along the conveying direction of the vehicle body conveyor line; The spraying area is used to spray the chassis of the vehicle body; The detection area is provided with an encoder, a transmission wheel, a start switch and a camera. The number of the cameras is multiple, and the multiple cameras are arranged in the detection area at intervals along the transportation direction of the vehicle body conveyor line. The encoder is in communication connection with the camera, and the encoder has a rotating gear, which is meshed with the transmission wheel. When the vehicle body conveyor line drives the vehicle body to move to the detection area, the start switch is turned on, and the transmission wheel drives the rotating gear to rotate. The encoder sends shooting signals to the cameras in sequence along the transportation direction of the vehicle body conveyor line according to the number of revolutions of the rotating gear. The analysis area is provided with an image processing device and a display screen. The image processing device is respectively connected to the display screen and the camera for communication. The image processing device is used to receive pictures taken by the camera and send the pictures to the display screen after processing.

2. The vehicle chassis spraying detection system according to claim 1, characterized in that: The plurality of cameras are arranged in a staggered manner along the transport direction of the vehicle body conveyor line.

3. The vehicle chassis spraying detection system according to claim 1, characterized in that: The vehicle body chassis spraying detection system also includes a control cabinet, in which a converter is arranged. The converter is communicatively connected to the encoder. The converter is used to obtain the travel distance of the vehicle body along the vehicle body conveyor line according to the number of rotations of the encoder, and to send a shooting signal to the corresponding camera according to the travel distance.

4. The vehicle chassis spraying detection system according to claim 1, characterized in that: The detection area is also provided with a plurality of light-emitting members, and the plurality of light-emitting members are sequentially spaced apart along the transport direction of the vehicle body conveyor line.

5. The vehicle chassis spraying detection system as claimed in claim 4, characterized in that: The detection area is also provided with a fixing frame, and the number of the fixing frames is two. The two fixing frames are arranged at intervals on both sides of the vehicle body conveyor line, wherein one end of some of the light-emitting components is installed on one fixing frame, and one end of the remaining light-emitting components is installed on the other fixing frame, and any two adjacent light-emitting components are installed on different fixing frames respectively.

6. The vehicle chassis spraying detection system according to claim 1, characterized in that: The detection area is also provided with a pressure spring, the rotating gear is connected with an abutment arm, the abutment arm is coaxially arranged with the rotating gear and can rotate relatively, and one end of the abutment arm away from the rotating gear abuts against the pressure spring and compresses the pressure spring.

7. The vehicle chassis spraying detection system according to claim 1, characterized in that: A start switch is arranged at one end of the detection zone close to the spraying zone, and an end switch is also arranged at one end of the detection zone away from the spraying zone.

8. The vehicle chassis spraying detection system according to any one of claims 1 to 6, characterized in that: The spraying area is formed by two spraying assemblies spaced apart on both sides of the vehicle body conveying line. The spraying assemblies include a mounting seat and a plurality of spray guns. The plurality of spray guns are spaced apart and mounted on corresponding mounting seats along a transport direction of the vehicle body conveying line.

9. The vehicle chassis spraying detection system according to any one of claims 1 to 6, characterized in that: The body conveying line comprises a hanger and a conveying rail extending along the conveying direction of the body conveying line, the hanger is slidably mounted on the conveying rail, and the conveying rail is used to drive the hanger to move along the conveying direction of the body conveying line.

10. A vehicle production line, characterized in that: The vehicle production line comprises the vehicle body chassis spraying detection system according to any one of claims 1 to 9.

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