Automobile body door panel strength detection equipment

Abstract

The invention discloses automobile body door panel strength detection equipment, which comprises a door panel fixing device, an auxiliary simulation device, a scanning device and a strength detection device, and is characterized in that the door panel fixing device comprises a supporting table, a fixing frame arranged on the supporting table and a fixing frame fixedly connected with the fixing frame, and the fixing frame and the fixing frame define a door panel placing groove; the auxiliary simulation device comprises a first simulation device, a second simulation device and a speed simulation device, the first simulation device is fixedly connected to the upper side of the fixed frame, the second simulation device is fixedly connected to the lower side of the fixed frame, the speed simulation device is fixedly installed in the door plate containing groove, and the scanning device is arranged on the other side of the supporting table. Through the arrangement of the first simulation device, the second simulation device and the speed simulation device, the stress condition of the vehicle body door panel is simulated in real time, the strength detection of the vehicle body door panel in each state is carried out, the strength detection result of the vehicle body door panel is perfected, and the overall detection structure is more accurate.

Description

Technical Field

[0001] The invention relates to a vehicle strength testing device, in particular to a vehicle body door panel strength testing device. Background Art

[0002] For a car body, the compressive strength of the car body door panel is a very important indicator, which can improve the passive safety of the car.

[0003] The compressive strength of automobile body door panels mainly refers to two compressive strength indicators: the overall strength of the body door panels and the anti-dent stiffness of the door outer panels. The extrusion strength of the entire side door is generally studied under quasi-static test conditions. The higher the extrusion strength of the side door structure, the better the compressive performance and the safer the occupants in the car. If the strength of the side door is too low, when it is subjected to external collision and extrusion, the side will undergo large deformation and displacement, causing harm to the occupants of the door.

[0004] However, existing automobile body door panel strength testing equipment generally performs physical impact tests in a static state, which will damage the test door panel and cannot simulate the strength of the body door panel in a running state. Summary of the invention

[0005] The purpose of the present invention is to provide a vehicle body door panel strength detection device to solve the above technical problems.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a vehicle body door panel strength detection device, comprising a door panel fixing device, an auxiliary simulation device, a scanning device and a strength detection device, the door panel fixing device comprising a support platform, a fixing frame arranged on the support platform and a fixed frame fixedly connected to the fixing frame, the fixing frame and the fixed frame enclose a door panel placement groove, the auxiliary simulation device comprising a first simulation device, a second simulation device and a speed simulation device, the first simulation device is fixedly connected to the upper side of the fixed frame, the second simulation device is fixedly connected to the lower side of the fixed frame, and several speed simulation devices are fixedly installed in the door panel placement groove, the scanning device is arranged on the other side of the support platform, the scanning device comprises a mechanical arm and a scanner, and the scanner is electrically connected to the strength detection device, the first simulation device comprises a first support frame and several first pressing plates arranged on the first support frame, the first pressing plate is connected to a first electric cylinder, and a first force sensor is arranged on one side of the first pressing plate, the second simulation device comprises a second support frame and several second pressing plates arranged on the second support frame, the second pressing plate is connected to a second electric cylinder, a second force sensor is arranged on one side of the second pressing plate, and several fixed hinge frames are arranged on the fixing frame.

[0007] Preferably, a first push plate is further provided on one side of the second simulation device, a third electric cylinder is connected to one side of the first push plate, and the first push plate is closely connected to the fixed frame at the lower side.

[0008] Preferably, the robotic arm includes a base, a rotating joint and a connecting arm, the base is fixedly connected to the rotating joint, the rotating joint is connected to the connecting arm, a scanner is fixedly installed on the top of the connecting arm, the scanner includes a first scanning camera, a second scanning camera and a connecting plate, the first scanning camera and the second scanning camera are respectively fixedly connected on both sides of the connecting plate, a spacing groove is provided below the connecting plate between the first scanning camera and the second scanning camera, and the width of the spacing groove is greater than the width of the fixed frame and the fixed frame.

[0009] Preferably, the strength detection device includes a signal analysis module, a data processing module and a simulation test module, the signal analysis module is electrically connected to the first scanning camera and the second scanning camera, the data processing module is electrically connected to the signal analysis module, the simulation test module is electrically connected to the data processing module, the simulation test module includes a display screen, a processor and a controller, the display is used to display image data processed by the data processing module after being transmitted by the signal analysis module, the controller is used to perform force simulation, and the processor is used to perform strength mechanical simulation analysis.

[0010] Preferably, the speed simulation device includes a plurality of ejectors, a friction plate for buffering is provided on the outer side of the ejector, the ejector includes a nozzle, an air inlet, a contraction tube, a throat and a diffuser, the nozzle is fixedly connected in the air inlet, the air inlet is connected to the contraction tube, the contraction tube is fixedly connected to the throat, the throat is fixedly connected to the diffuser, and the ejectors are all connected to a drive motor.

[0011] Preferably, the auxiliary simulation device also includes a heating device and a cooling device arranged on a support table, the heating device includes a heating element and a temperature control panel, the heating element is used to simulate the influence of a high temperature environment on the door panel material, the cooling device includes a cooling element and a temperature control panel, the cooling element is used to simulate the influence of a low temperature environment on the door panel material, and the temperature regulator is used to adjust the temperature of the heating element and the cooling element.

[0012] Preferably, the heating element is a heating tube, which is connected to a first power source; the cooling element includes a radiator and a water-cooling tube, the radiator is provided with a water-cooling tube for heat exchange, and the radiator is connected to a second power source.

[0013] Preferably, the first force sensor and the second force sensor are both electrically connected to a signal analysis module.

[0014] Preferably, the first support frame is in contact with the fixed frame located at the upper side, and the second support frame is in contact with the fixed frame located at the lower side.

[0015] Preferably, the first scanning camera and the second scanning camera are both optical three-dimensional scanning cameras.

[0016] Compared with the prior art, the present invention has the following beneficial effects: By setting up the first simulation device, the second simulation device and the speed simulation device, the stress condition of the vehicle body door panel can be simulated in real time. By setting up the first pressure plate, the second pressure plate, the speed simulation device and the fixed hinge frame to cooperate with each other to perform stress, the conditions of the vehicle body door panel before installation, after installation and after installation, and at various driving speeds can be simulated. After being scanned by the scanning device, real-time feedback is given to the strength detection device, and then the real-time strength detection is performed through simulation mechanics. The strength detection of the vehicle body door panel in various states is effectively carried out, and the strength detection result of the vehicle body door panel is further improved, making the overall detection structure more accurate, rather than a simple static detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0018] Figure 1 It is an overall schematic diagram of an automobile body door panel strength testing device according to the present embodiment; Figure 2 This is a diagram showing the coordination of a door panel fixing device and an auxiliary simulation device after the vehicle body door panel is installed in a vehicle body door panel strength testing device of this embodiment; Figure 3 It is a schematic diagram of a door panel fixing device and an auxiliary simulation device of an automobile body door panel strength testing device in this embodiment without installing a body door panel; Figure 4 It is a structural schematic diagram of a scanning device in a vehicle body door panel strength detection device of this embodiment; Figure 5 is a schematic diagram of a scanner in a vehicle body door panel strength detection device according to the present embodiment; Figure 6 is a schematic diagram of a strength detection device in a vehicle body door panel strength detection device of this embodiment; Figure 7 is a schematic diagram of an ejector in a vehicle body door panel strength testing device according to the present embodiment; Figure 8It is a front view of a speed simulation device in a vehicle body door panel strength testing device of this embodiment; Fig. 9 It is a structural schematic diagram of a heating device in a vehicle body door panel strength testing device of this embodiment; Fig.10 It is a structural schematic diagram of a cooling device in a vehicle body door panel strength testing device according to this embodiment; Fig.11 It is a schematic diagram of the internal structure of a cooling device in an automobile body door panel strength testing device according to this embodiment.

[0019] In the accompanying drawings, the components represented by the reference numerals are listed as follows: 1. Door panel fixing device; 2. Auxiliary simulation device; 3. Scanning device; 4. Strength detection device; 5. Support table; 6. Fixed frame; 7. Fixed frame; 8. Door panel placement slot; 9. First simulation device; 10. Second simulation device; 11. Speed ​​simulation device; 12. Robotic arm; 13. Scanner; 14. First support frame; 15. First pressure plate; 16. First electric cylinder; 17. First force sensor; 18. Second support frame; 19. Second pressure plate; 20. Second electric cylinder; 21. Second force sensor; 22. Fixed hinge frame; 23. First push plate; 24. Third electric cylinder; 25. Base; 26. Rotating joint; 27. Connecting arm ; 28. First scanning camera; 29. ​​Second scanning camera; 30. Connecting plate; 31. Spacer groove; 32. Signal analysis module; 33. Data processing module; 34. Simulation test module; 35. Display screen; 36. Processor; 37. Controller; 38. Ejector; 39. Friction plate; 40. Nozzle; 41. Air inlet; 42. Contraction tube; 43. Throat; 44. Diffuser; 45. Drive motor; 46. Heating device; 47. Cooling device; 48. Heating element; 49. Temperature control panel; 50. Cooling element; 51. Radiator; 52. Water cooling tube; 53. First power supply; 54. Second power supply; 55. Vehicle door panel. DETAILED DESCRIPTION

[0020] 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.

[0021] See also Figure 1-11The present invention provides a technical solution: a vehicle body door panel strength detection device, comprising a door panel fixing device 1, an auxiliary simulation device 2, a scanning device 3 and a strength detection device 4, the door panel fixing device 1 comprises a support platform 5, a fixing frame 6 arranged on the support platform 5 and a fixing frame 7 fixedly connected to the fixing frame 6, the fixing frame 6 and the fixing frame 7 enclose a door panel placement groove 8, the auxiliary simulation device 2 comprises a first simulation device 9, a second simulation device 10 and a speed simulation device 11, the first simulation device 9 is fixedly connected to the upper side of the fixing frame 7, the second simulation device 10 is fixedly connected to the lower side of the fixing frame 7, and a plurality of speed simulation devices 11 are fixedly installed in the door panel placement groove 8 The scanning device 3 is arranged on the other side of the support platform 5, the scanning device 3 includes a mechanical arm 12 and a scanner 13, the scanner 13 is electrically connected to the strength detection device 4, the first simulation device 9 includes a first support frame 14 and a plurality of first pressing plates 15 arranged on the first support frame 14, the first pressing plate 15 is connected to the first electric cylinder 16, and a first force sensor 17 is arranged on one side of the first pressing plate 15, the second simulation device 10 includes a second support frame 18 and a plurality of second pressing plates 19 arranged on the second support frame 18, the second pressing plate 19 is connected to the second electric cylinder 20, and a second force sensor 21 is arranged on one side of the second pressing plate 19, and a plurality of fixed hinge frames 22 are arranged on the fixed frame 6.

[0022] Specifically, a first push plate 23 is further provided on one side of the second simulation device 10, and a third electric cylinder 24 is connected to one side of the first push plate 23. The first push plate 23 is closely connected to the fixed frame 7 on the lower side. By setting a first push rod, the thrust transmitted to the vehicle body door panel 55 when the vehicle body bottom plate is subjected to thrust can be simulated. The tester controls the third electric cylinder 24 to push the first push plate 23, thereby simulating a thrust for the vehicle body door panel 55, further increasing the number of simulation scenarios.

[0023] Specifically, the robot arm 12 includes a base 25, a rotating joint 26 and a connecting arm 27. The base 25 is fixedly connected to the rotating joint 26. The rotating joint 26 is connected to the connecting arm 27. The top of the connecting arm 27 is fixedly installed with a scanner 13. The scanner 13 includes a first scanning camera 28, a second scanning camera 29 and a connecting plate 30. The first scanning camera 28 and the second scanning camera 29 are respectively fixedly connected to both sides of the connecting plate 30. A spacing groove 31 is provided below the connecting plate 30 between the first scanning camera 28 and the second scanning camera 29. The width of the spacing groove 31 is greater than the fixed The width of the frame 6 and the fixed frame 7. Through the above settings, the scanner 13 can flexibly move up and down in the door panel placement slot 8 to adapt to the detection of vehicle body door panels 55 of different sizes. The two scanning cameras of the scanner 13 are respectively responsible for capturing the image information on both sides of the vehicle body door panel 55, and transmitting the image data to the strength detection device 4. A spacing groove 31 is set between the first scanning camera 28 and the second scanning camera 29, which can enable the first scanning camera 28 and the second scanning camera 29 to scan on both sides of the vehicle body door panel 55 respectively without touching the fixed frame 6 and the fixed frame 7.

[0024] Specifically, the strength detection device 4 includes a signal analysis module 32, a data processing module 33 and a simulation test module 34. The signal analysis module 32 is electrically connected to the first scanning camera 28 and the second scanning camera 29. The data processing module 33 is electrically connected to the signal analysis module 32. The simulation test module 34 is electrically connected to the data processing module 33. The simulation test module 34 includes a display screen 35, a processor 36 and a controller 37. The display screen is used to display image data processed by the data processing module 33 after being transmitted by the signal analysis module 32. The controller 37 is used to perform force simulation. The processor 36 is used to perform strength mechanical simulation analysis. The strength detection device 4 is configured so that the image data signals collected by the first scanning camera 28 and the second scanning camera 29 are transmitted to the signal analysis module 32. The signal analysis module 32 converts the image data signals into image data that can be processed by the data processing module 33. After the data processing module 33 completes the processing, the data is transmitted to the display screen 35 and the processor 36. The display screen 35 displays the image data processed by the data processing module 33. The tester performs force simulation through the controller 37 to simulate the force of the collected image of the vehicle body door panel 55, so that the processor 36 performs strength mechanical simulation analysis to detect the corresponding strength data.

[0025] Specifically, the speed simulation device 11 includes a plurality of ejectors, and a friction plate 38 for buffering is provided on the outer side of the ejector; the ejector; 39, the ejector includes a nozzle 40, an air inlet 41, a contraction tube 42, a throat 43 and a diffuser 44, the nozzle 40 is fixedly connected in the air inlet 41, the air inlet 41 is connected to the contraction tube 42, the contraction tube 42 is fixedly connected to the throat 43, and the throat 43 is fixedly connected to the diffuser 44, and the ejectors are all connected to a driving motor. Through the use of the ejectors, the vehicle body door panel 55 can simulate various wind speed conditions that the vehicle may encounter during driving when it is impacted by airflows of different speeds. The driving motor of each ejector allows the tester to set different wind speed simulation parameters as needed, and can control the injection speed and direction of each ejector to ensure that the simulated wind speed conditions are as consistent as possible with the wind speed conditions when the actual vehicle is driving. Through this comprehensive simulation test, the strength performance of the automobile body door panel 55 in actual use can be comprehensively evaluated to ensure its reliability and safety in various complex environments.

[0026] Specifically, the auxiliary simulation device 2 also includes a heating device 45, a driving motor 46 and a cooling device 47 arranged on the support platform 5. The heating device 45, the driving motor 46 include a heating element 48 and a temperature control panel 49. The heating element 48 is used to simulate the influence of a high temperature environment on the door panel material. The cooling device 47 includes a cooling element 50 and a temperature control panel 49. The cooling element 50 is used to simulate the influence of a low temperature environment on the door panel material. The temperature regulator is used to adjust the temperature of the heating element 48 and the cooling element 50. Furthermore, the heating element 48 is a heating tube connected to a first power supply 53. The cooling element 50 includes a radiator 51 and a water cooling tube 52. The radiator 51 is provided with The water-cooling pipe 52 used for heat exchange and the radiator 51 are connected to the second power supply 54. By setting up a heating device 45, a driving motor 46 and a cooling device 47, the changes in material properties of the automobile door panel under different temperature conditions can be simulated. The heating device 45, the driving motor 46 heats the door panel through the heating pipe to simulate the influence of the high temperature environment in summer on the material of the vehicle body door panel 55, while the cooling device 47 cools the door panel through the radiator 51 and the water-cooling pipe 52 to simulate the influence of the low temperature environment in winter on the material. The temperature control panel 49 can accurately control the heating and cooling temperatures to ensure that the simulated environment matches the actual use conditions, further increasing the number of detection scenarios and test variables.

[0027] Specifically, the first force sensor 17 and the second force sensor 21 are both electrically connected to the signal analysis module 32. , which is used to monitor in real time the force applied by the first simulation device 9 and the second simulation device 10 on the vehicle body door panel 55. When the first simulation device 9 and the second simulation device 10 drive the first pressing plate 15 and the second pressing plate 19 to apply pressure through the first electric cylinder 16 and the second electric cylinder 20, the first force sensor 17 and the second force sensor 21 can accurately measure the magnitude and direction of the applied force, and these data are transmitted to the signal analysis module 32 for analysis and processing. The signal analysis module 32 further combines the image information captured by the scanner 13 based on the data provided by the first force sensor 17 and the second force sensor 21. In this way, the detection equipment can simulate the various forces that may be encountered in actual use, thereby providing a more accurate detection result for the strength of the vehicle body door panel 55.

[0028] Specifically, the first support frame 14 fits with the fixed frame 7 on the upper side, and the second support frame 18 fits with the fixed frame 7 on the lower side, ensuring the close fit between the first simulation device 9 and the second simulation device 10 and the door panel fixing device 1, thereby improving the stability and accuracy of the simulation test.

[0029] Specifically, the first scanning camera 28 and the second scanning camera 29 are both optical three-dimensional scanning cameras, such as Zeiss three-dimensional scanning cameras, which can capture the three-dimensional morphology information of the surface of the vehicle body door panel 55. Through this three-dimensional scanning technology, the defect information such as unevenness, scratches, cracks, etc. on the door panel surface can be accurately obtained, providing more detailed data support for subsequent strength analysis. The use of three-dimensional scanning cameras also enables the detection equipment to adapt to vehicle body door panels 55 of different shapes and sizes, thereby improving the versatility and flexibility of the equipment.

[0030] A specific application example of this embodiment is: When the simulation scene is at room temperature, the vehicle body door panel 55 is installed, and the car is not running, the tester first places the vehicle body door panel 55 to be tested in the door panel placement groove 8, fixes the vehicle body door panel 55 on the fixing frame 6 by fixing the hinge with the fixing hinge frame 22, and ensures that the fixing frame 7 of the door panel fixing device 1 is tightly fitted with the edge of the door panel, then starts the auxiliary simulation device 2, and the first simulation device 9 and the second simulation device 10 drive the first pressing plate 15 and the second pressing plate 19 through the first electric cylinder 16 and the second electric cylinder 20, and the first pressing plate 15 and the second pressing plate 19 are pressed. The pressing plate 19 applies a preset pressure to the upper and lower sides of the vehicle body door panel 55, simulating the vertical pressure on the vehicle body door panel 55 when the vehicle is stationary. During the simulation test, the mechanical arm 12 of the scanning device 3 drives the scanner 13 to scan the surface of the door panel. The first scanning camera 28 and the second scanning camera 29 respectively capture the image information on both sides of the door panel, and transmit these image data to the strength detection device 4. The signal analysis module 32 analyzes and processes the image data, and the data processing module 33 transmits the processed data to the simulation test module 34. The processor 36 in the simulation test module 34 performs strength mechanical simulation analysis, the display screen 35 displays real-time image data and analysis results, and the controller 37 allows the tester to perform force simulation to evaluate the strength performance of the door panel in actual use. When the simulation scene is room temperature, the heating device 45; the drive motor; 46 and the cooling device 47 do not need to be started, thereby completing the strength test under the simulation scene.

[0031] The second specific application example of this embodiment is: When the simulated scene is a state where the temperature is 30°C, the vehicle body door panel 55 is installed, and the vehicle is running at a speed of 30 km / h, the tester first places the vehicle body door panel 55 to be tested in the door panel placement groove 8, and fixes the vehicle body door panel 55 on the fixing frame 6 by fixing the hinge in cooperation with the fixed hinge frame 22, and ensures that the fixed frame 7 of the door panel fixing device 1 is tightly fitted with the edge of the door panel, then starts the auxiliary simulation device 2, and the first simulation device 9 and the second simulation device 10 drive the first pressure plate 15 and the second pressure plate 19 through the first electric cylinder 16 and the second electric cylinder 20, and the first pressure plate 15 and the second pressure plate 19 apply a preset pressure to the upper and lower sides of the vehicle body door panel 55, simulating the vehicle body door 55 in a stationary state. The vertical pressure on the panel 55 is borne by the speed simulation device 11. At the same time, the ejector in the speed simulation device 11 is started to eject airflow to simulate the wind speed conditions when the vehicle is driving. By adjusting the drive motor of the ejector, the airflow speed is set to 30km / h to simulate the wind speed that the vehicle may encounter during driving. By turning on the heating device 45; the drive motor; 46, the heating tube heats the door panel to 30°C to simulate the air environment of 30°C. During the simulation test, the mechanical arm 12 of the scanning device 3 drives the scanner 13 to scan the surface of the door panel. The first scanning camera 28 and the second scanning camera 29 respectively capture the image information on both sides of the door panel, and transmit these image data to the strength detection device 4. The signal analysis module 32 analyzes and processes the image data, and the data processing module 33 transmits the processed data to the simulation test module 34. The processor 36 in the simulation test module 34 performs strength mechanical simulation analysis, the display screen 35 displays real-time image data and analysis results, and the controller 37 allows the tester to perform force simulation to evaluate the strength performance of the door panel in actual use.

[0032] The third specific application example of this embodiment is: When the simulation scenario is a state where the temperature is 10°C, the vehicle body door panel 55 is installed, and the vehicle is running at a speed of 25 km / h, and at the same time, the force applied to the bottom of the vehicle when the vehicle hits a buffer speed bump is simulated, the tester first places the vehicle body door panel 55 to be tested in the door panel placement slot 8, and fixes the vehicle body door panel 55 on the fixing frame 6 by means of a fixed hinge and a fixed hinge frame 22, and ensures that the fixed frame 7 of the door panel fixing device 1 is tightly fitted with the edge of the door panel, and then starts the auxiliary simulation device 2, and the first simulation device 9 and the second simulation device 10 drive the first pressure plate 15 and the second pressure plate 19 through the first electric cylinder 16 and the second electric cylinder 20, and the first pressure plate 15 and the second pressure plate 19 apply a preset pressure to the upper and lower sides of the vehicle body door panel 55, simulating the vehicle body door panel 55 in a stationary state. 5 is subjected to vertical pressure, and at the same time, the speed simulation device 11 is started, and the ejector in the speed simulation device 11 ejects airflow to simulate the wind speed condition when the vehicle is driving. By adjusting the driving motor of the ejector, the airflow speed is set to 25km / h to simulate the wind speed that the vehicle may encounter during driving. By opening the cooling device 47, the radiator 51 and the water cooling pipe 52 cooperate to dissipate the heat of the door to 10°C, and at the same time, the third electric cylinder 24 is started to drive the first push plate 23, so as to simulate a thrust for the vehicle body door panel 55. During the simulation test, the mechanical arm 12 of the scanning device 3 drives the scanner 13 to scan the surface of the door panel, and the first scanning camera 28 and the second scanning camera 29 respectively capture the image information on both sides of the door panel, and transmit these image data to the strength detection device 4. The signal analysis module 32 analyzes and processes the image data, and the data processing module 33 transmits the processed data to the simulation test module 34. The processor 36 in the simulation test module 34 performs strength mechanical simulation analysis, the display screen 35 displays real-time image data and analysis results, and the controller 37 allows the tester to perform force simulation to evaluate the strength performance of the door panel in actual use.

[0033] In some optional embodiments, the simulation test module 34 may adopt ADVISOR, CAE or CarSim.

[0034] In the description of the present invention, it is necessary to understand that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0035] In the present invention, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0036] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes may be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automobile body door panel strength testing device, characterized in that: The invention comprises a door panel fixing device (1), an auxiliary simulation device (2), a scanning device (3) and a strength detection device (4); the door panel fixing device (1) comprises a support platform (5), a fixing frame (6) arranged on the support platform (5) and a fixing frame (7) fixedly connected to the fixing frame (6); the fixing frame (6) and the fixing frame (7) enclose a door panel placement groove (8); the auxiliary simulation device (2) comprises a first simulation device (9), a second simulation device (10) and a speed simulation device (11); the first simulation device (9) is fixedly connected to the upper side of the fixing frame (7); the second simulation device (10) is fixedly connected to the lower side of the fixing frame (7); a plurality of the speed simulation devices (11) are fixedly installed in the door panel placement groove (8); the scanning device (3) is arranged on the support platform (5); On the other side, the scanning device (3) comprises a mechanical arm (12) and a scanner (13), the scanner (13) being electrically connected to the strength detection device (4), the first simulation device (9) comprising a first support frame (14) and a plurality of first pressing plates (15) arranged on the first support frame (14), the first pressing plate (15) being connected to a first electric cylinder (16), a first force sensor (17) being arranged on one side of the first pressing plate (15), the second simulation device (10) comprising a second support frame (18) and a plurality of second pressing plates (19) arranged on the second support frame (18), the second pressing plate (19) being connected to a second electric cylinder (20), a second force sensor (21) being arranged on one side of the second pressing plate (19), and a plurality of fixed hinge frames (22) being arranged on the fixed frame (6).

2. The automobile body door panel strength testing device according to claim 1, characterized in that: A first push plate (23) is also provided on one side of the second simulation device (10), a third electric cylinder (24) is connected to one side of the first push plate (23), and the first push plate (23) is closely connected to the fixed frame (7) at the lower side.

3. The automobile body door panel strength testing device according to claim 1, characterized in that: The mechanical arm (12) comprises a base (25), a rotating joint (26) and a connecting arm (27); the base (25) is fixedly connected to the rotating joint (26); the rotating joint (26) is connected to the connecting arm (27); a scanner (13) is fixedly mounted on the top of the connecting arm (27); the scanner (13) comprises a first scanning camera (28), a second scanning camera (29) and a connecting plate (30); the first scanning camera (28) and the second scanning camera (29) are respectively fixedly connected to two sides of the connecting plate (30); a spacing groove (31) is provided below the connecting plate (30) and between the first scanning camera (28) and the second scanning camera (29); the width of the spacing groove (31) is greater than the width of the fixing frame (6) and the fixed frame (7).

4. The automobile body door panel strength testing device according to claim 3, characterized in that: The strength detection device (4) comprises a signal analysis module (32), a data processing module (33) and a simulation test module (34); the signal analysis module (32) is electrically connected to a first scanning camera (28) and a second scanning camera (29); the data processing module (33) is electrically connected to the signal analysis module (32); the simulation test module (34) is electrically connected to the data processing module (33); the simulation test module (34) comprises a display screen (35), a processor (36) and a controller (37); the display screen is used to display image data processed by the data processing module (33) after being transmitted by the signal analysis module (32); the controller (37) is used to perform force simulation; and the processor (36) is used to perform strength mechanical simulation analysis.

5. The automobile body door panel strength testing device according to claim 1, characterized in that: The speed simulation device (11) includes a plurality of ejectors, and a friction plate (38; ejector; 39) for buffering is provided on the outer side of the ejector. The ejector includes a nozzle (40), an air inlet (41), a contraction tube (42), a throat (43) and a diffuser (44). The nozzle (40) is fixedly connected in the air inlet (41), the air inlet (41) is connected to the contraction tube (42), the contraction tube (42) is fixedly connected to the throat (43), the throat (43) is fixedly connected to the diffuser (44), and the ejectors are all connected to a driving motor.

6. The automobile body door panel strength testing device according to claim 1, characterized in that: The auxiliary simulation device (2) further comprises a heating device (45; a driving motor; 46) and a cooling device (47) arranged on the support platform (5); the heating device (45; a driving motor; 46) comprises a heating element (48) and a temperature control panel (49); the heating element (48) is used to simulate the influence of a high temperature environment on a door panel material; the cooling device (47) comprises a cooling element (50) and a temperature control panel (49); the cooling element (50) is used to simulate the influence of a low temperature environment on a door panel material; and the temperature regulator is used to adjust the temperature of the heating element (48) and the cooling element (50).

7. The automobile body door panel strength testing device according to claim 6, characterized in that: The heating element (48) is a heating tube, which is connected to a first power source (53). The cooling element (50) comprises a radiator (51) and a water cooling tube (52). The radiator (51) is provided with a water cooling tube (52) for heat exchange. The radiator (51) is connected to a second power source (54).

8. The automobile body door panel strength testing device according to claim 1, characterized in that: The first force sensor (17) and the second force sensor (21) are both electrically connected to the signal analysis module (32).

9. The automobile body door panel strength testing device according to claim 1, characterized in that: The first support frame (14) is fitted with the fixed frame (7) located at the upper side, and the second support frame (18) is fitted with the fixed frame (7) located at the lower side.

10. The automobile body door panel strength testing device according to claim 4, characterized in that: The first scanning camera (28) and the second scanning camera (29) are both optical three-dimensional scanning cameras.

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