Test tool

Abstract

The utility model provides a test tool used for detecting the structural rigidity of a gull-wing door, the gull-wing door comprises a hinge used for being connected with a vehicle body, the test tool comprises a fixing device, the fixing device comprises a base and a fixing plate, the fixing plate can move in the front-back direction, the left-right direction and the up-down direction relative to the base, and the fixing plate is used for fixing the gull-wing door. The fixing plate can rotate around a first axis and a second axis, the first axis is parallel to the front-back direction, the second axis is parallel to the up-down direction, and the fixing plate is provided with a fixing part used for fixing the hinge. According to the test tool provided by the utility model, the fixing device is arranged, and the gull-wing door is fixed on the fixing device to detect the rigidity of the gull-wing door, so that the rigidity of the gull-wing door can be accurately obtained, the accuracy of experimental data is ensured, meanwhile, the interference of other structures can be effectively avoided, the detection difficulty is reduced, and the detection efficiency can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle door manufacturing, in particular to a test tool. Background Art

[0002] Gull-wing door stiffness is an important indicator for measuring the reliability of gull-wing doors. Compared with ordinary car doors, gull-wing doors have a unique shape and opening and closing method. In order to test the stiffness of gull-wing doors, the gull-wing doors need to be fixed on the test bench. However, different gull-wing doors have different spatial positions and angles, resulting in a test fixture that cannot be fixed to multiple gull-wing doors, thereby increasing the difficulty of gull-wing door stiffness testing. At the same time, the test fixture cannot fix the gull-wing door at the appropriate position and angle, which will reduce the accuracy of the test data. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems in the prior art. To this end, the present invention provides a test fixture that can ensure the accuracy of experimental data.

[0004] According to the test fixture of the embodiment of the present invention, it is used to detect the structural stiffness of the gull-wing door, and the gull-wing door includes a hinge for connecting to the vehicle body. The test fixture includes: a fixing device, and the fixing device includes a base and a fixing plate. The fixing plate is movable relative to the base in the front-to-back direction, the left-to-right direction, and the up-to-down direction, and the fixing plate is rotatable around a first axis and a second axis, the first axis is parallel to the front-to-back direction, and the second axis is parallel to the up-to-down direction, and the fixing plate has a fixing portion for fixing the hinge.

[0005] According to the test fixture of the present invention, a fixing device is provided, and the gull-wing door is fixed on the fixing device to test the stiffness of the gull-wing door, so that the stiffness of the gull-wing door can be accurately obtained, and the accuracy of the experimental data can be ensured. At the same time, the interference of other structures can be effectively avoided, and the difficulty of detection can be reduced, thereby effectively improving the detection efficiency.

[0006] According to some embodiments of the present invention, the fixing device also includes: a bottom plate, which is movably provided on the base in the front-to-back direction; a first driving mechanism, which is used to drive the bottom plate to move forward and backward relative to the base; a support column, which extends up and down, is provided on the bottom plate, and is movable in the left-to-right direction relative to the base; and a second driving mechanism, which is used to drive the support column to move left and right relative to the base.

[0007] According to some optional embodiments of the present invention, the fixing device also includes: a first bracket, the fixing plate is rotatably provided on the first bracket around the first axis; a third driving mechanism, the third driving mechanism is used to drive the fixing plate to rotate around the first axis relative to the first bracket; a second bracket, the second bracket is provided at the upper end of the support column, and the second bracket is rotatably provided on the support column around the second axis; a fourth driving mechanism, the fourth driving mechanism is connected to the second bracket and is used to drive the second bracket to rotate around the second axis relative to the support column; a fifth driving mechanism, the fifth driving mechanism is connected to the first bracket and is used to drive the first bracket to move up and down relative to the second bracket.

[0008] According to some embodiments of the present invention, there are multiple fixing devices, and they are suitable for one-to-one correspondence with the hinges of the gull-wing door.

[0009] According to some embodiments of the present invention, the test tool further includes: a locking device, the locking device including a base and a locking member, the locking member being suitable for cooperating with the lock hole of the gull-wing door to lock the gull-wing door.

[0010] According to some optional embodiments of the present invention, the locking device further includes: a sliding member, the sliding member is slidably provided on the base along the up and down directions, and the locking member is provided on the sliding member.

[0011] According to some optional embodiments of the present invention, the locking device also includes: a fixed shaft, which is provided on the sliding member and extends in the front-to-back direction, a through hole is formed at one end of the locking member, and the locking member is rotatably sleeved on the fixed shaft through the through hole, and the other end of the locking member is suitable for cooperating with the locking hole; a limiting nut, which is sleeved on the fixed shaft and arranged on both sides of the locking member in the axial direction of the fixed shaft, and the limiting nut is suitable for abutting against the locking member to limit the rotation of the locking member.

[0012] According to some embodiments of the present invention, the test tool further includes: a loading device, the loading device includes a robotic arm and a loading assembly, the loading assembly is arranged on the robotic arm, and the loading assembly is used to apply a load to the gull-wing door.

[0013] According to some optional embodiments of the present invention, the loading device also includes: a positioning plate, which is connected to the end of the robotic arm, and the loading assembly is fixed to the robotic arm through the positioning plate; a displacement feedback measurement assembly, which is fixed to the positioning plate, and the displacement feedback measurement assembly is used to measure the displacement of the positioning plate relative to the base; a second displacement measurement unit, and the second displacement measurement unit is used to detect the displacement of the gull-wing door deformation.

[0014] According to some embodiments of the present invention, the loading device further includes: a control component, wherein the control component is electrically connected to the loading device and the fixing device.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of a test fixture according to an embodiment of the present utility model;

[0017] Figure 2 yes Figure 1 A schematic diagram of the fixing device shown in ;

[0018] Figure 3 yes Figure 2 A schematic diagram of the base, the first drive mechanism and the second drive mechanism shown in ;

[0019] Figure 4 yes Figure 2 Schematic diagram of the support column shown in;

[0020] Figure 5 yes Figure 2 A schematic diagram of a partial structure of the fixing device shown in ;

[0021] Figure 6 yes Figure 5 A schematic diagram of the second bracket shown in ;

[0022] Figure 7 yes Figure 5 A schematic diagram of a partial structure of the fixing device shown in ;

[0023] Figure 8 yes Figure 2 Schematic diagram of the fixed plate shown in;

[0024] Figure 9 yes Figure 1 A schematic diagram of the locking device shown in ;

[0025] Figure 10 yes Figure 1 A schematic diagram of the loading device shown in ;

[0026] Figure 11 yes Figure 10 A schematic diagram of a partial structure of a loading device shown in ;

[0027] Figure 12 yes Figure 11 A schematic diagram of a partial structure of a loading device shown in ;

[0028] Figure 13 yes Figure 12 Schematic diagram of the positioning plate shown in;

[0029] Figure 14 yes Figure 12 Schematic diagram of the displacement feedback measurement assembly shown in;

[0030] Figure 15 yes Figure 12 A schematic diagram of the control components shown in ;

[0031] Figure 16 yes Figure 1 Schematic diagram of the hinge of the gull-wing door shown in .

[0032] Reference numerals:

[0033] 100. Test tooling;

[0034] 10. Fixing device; 11. Base; 111. First protective plate; 12. Fixing plate; 13. Bottom plate; 14. Support column; 15. First bracket; 16. Second bracket; 161. Second protective plate; 171. First drive mechanism; 1711. First motor; 1712. First screw rod; 172. Second drive mechanism; 1721. Second motor; 1722. Second screw rod; 173. Third drive mechanism; 174. Fourth drive mechanism; 175. Fifth drive mechanism; 18. Coupling;

[0035] 20. Locking device; 21. Base; 22. Locking member; 23. Sliding member; 24. Fixed shaft; 25. Limit nut;

[0036] 30. Loading device; 31. Robotic arm; 32. Loading assembly; 321. Third motor; 322. Baffle; 323. Loading head; 324. Force measuring unit; 33. Positioning plate; 34. Displacement feedback measurement assembly; 341. Support; 342. Connecting rod; 343. First displacement measuring unit; 35. Second displacement measuring unit; 36. Control assembly; 361. Workbench; 362. Industrial computer; 363. Display; 364. Data acquisition box; 365. Control cabinet.

[0037] 200, gull-wing door; 210, hinge. DETAILED DESCRIPTION

[0038] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0039] Please refer to the following Figure 1-16 A test fixture 100 according to an embodiment of the present invention is described.

[0040] Reference Figure 1 、 Figure 2 、 Figure 3 and Figure 5 According to the test fixture 100 of the embodiment of the present invention, it is used to detect the structural stiffness of the gull-wing door. The gull-wing door includes a hinge 210 for connecting to the vehicle body. The test fixture 100 includes: a fixing device 10, the fixing device 10 includes a base 11 and a fixing plate 12, the fixing plate 12 can move relative to the base 11 in the front-to-back direction, the left-to-right direction and the up-to-down direction, and the fixing plate 12 can rotate around a first axis and a second axis, the first axis is parallel to the front-to-back direction, and the second axis is parallel to the up-to-down direction, and the fixing plate 12 has a fixing portion for fixing the hinge 210.

[0041] When testing the stiffness of the gull-wing door, use the fixing device 10 of the test fixture 100 to fix the gull-wing door. First, adjust the position of the fixing plate 12 relative to the base 11. To adapt to the position of the hinge 210 of the gull-wing door 200, move the fixing plate 12 in the front-to-back direction, left-to-right direction, and up-to-down direction to facilitate the fixation of the fixing plate 12 and the hinge 210. Then adjust the fixing plate 12 to rotate around the first axis or around the second axis to fix the fixing plate 12 and the hinge 210 of the gull-wing door 200. At this time, start testing the stiffness of the gull-wing door.

[0042] The test fixture 100 of the present invention is provided with a fixing device 10 that is adjustable in the front-to-back, left-to-right, and up-to-down directions. Thus, the position and angle of a gull-wing door under actual working conditions can be simulated. By fixing the gull-wing door to the fixing device 10 and testing its stiffness, the stiffness of the gull-wing door can be accurately obtained, ensuring the accuracy of the experimental data. Furthermore, by fixing the gull-wing door only to the fixing device 10, interference from other structures can be effectively avoided, thereby facilitating the testing of the gull-wing door's stiffness, reducing testing difficulty and effectively improving testing efficiency. Furthermore, the fixing device 10 is multi-directionally adjustable, thereby adapting to various shapes and opening and closing methods of various gull-wing doors 200, thereby meeting various usage requirements. Furthermore, the versatility of the test fixture 100 is enhanced, eliminating the need to develop different test fixtures 100 for different gull-wing doors 200, thereby reducing the development cost of the test fixture 100.

[0043] In addition, the fixing device 10 can firmly fix the gull-wing door, thereby ensuring that the gull-wing door can be stationary relative to the ground, thereby facilitating the detection of the stiffness of the gull-wing door and effectively improving the detection efficiency.

[0044] According to the test fixture 100 of the embodiment of the present invention, a fixing device 10 is provided, and the gull-wing door is fixed on the fixing device 10 to test the stiffness of the gull-wing door, so that the stiffness of the gull-wing door can be accurately obtained, and the accuracy of the experimental data can be ensured. At the same time, the interference of other structures can be effectively avoided, and the difficulty of detection can be reduced, thereby effectively improving the detection efficiency.

[0045] According to some embodiments of the present invention, referring to Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 and Figure 8 The fixing device 10 further includes: a base plate 13, a first drive mechanism 171, a support column 14, and a second drive mechanism 172. The base plate 13 is movably mounted on the base 11 in the front-to-back direction; the first drive mechanism 171 is configured to drive the base plate 13 to move forward and backward relative to the base 11; the support column 14 extends vertically and is mounted on the base plate 13 and movably mounted in the left-to-right direction relative to the base 11; and the second drive mechanism 172 is configured to drive the support column 14 to move left and right relative to the base 11.

[0046] In this way, the first driving mechanism 171 can drive the bottom plate 13 to move forward and backward relative to the base 11, so that the fixed plate 12 can move forward and backward. The second driving mechanism 172 can drive the support column 14 to move left and right relative to the base 11, so that the fixed plate 12 can move left and right. The first driving mechanism 171 and the second driving mechanism 172 cooperate to realize the movement of the fixed plate 12 in the front and back directions and left and right directions relative to the base 11.

[0047] For example, Figure 2 、 Figure 3 and Figure 4 As shown, the base 11 is disposed on the ground, the bottom plate 13 is disposed on the base 11, and a first driving mechanism 171 is fixed to the base 11. The first driving mechanism 171 drives the bottom plate 13 to move in the front-to-back direction relative to the base 11. The support column 14 extends in the up-down direction. The lower end of the support column 14 is disposed on the bottom plate 13, and the upper end of the support column 14 extends upward. The second driving mechanism 172 is fixed to the bottom plate 13. The second driving mechanism 172 drives the support column 14 to move left and right relative to the base 11. Preferably, first protective plates 111 are further provided on the left and right sides of the base 11 to effectively protect the base 11.

[0048] Furthermore, if Figure 2 and Figure 3As shown, the first drive mechanism 171 includes: a first motor 1711 and a first screw rod 1712. The first screw rod 1712 extends in the front-to-back direction. The output end of the motor shaft of the first motor 1711 is transmission-connected to the first screw rod 1712. The base plate 13 is passed through the first screw rod 1712 and transmission-connected to the first screw rod 1712. Preferably, the first screw rod 1712 is a chrome-plated cylindrical rod, which can ensure the smoothness and strength of the first screw rod 1712, thereby ensuring the smoothness of the movement of the base plate 13 relative to the first screw rod 1712. The first motor 1711 is a rotary servo motor, which can ensure that the first motor 1711 can normally drive the first screw rod 1712 to rotate.

[0049] Furthermore, if Figure 2 and Figure 3 As shown, the second drive mechanism 172 includes: a second motor 1721 and a second screw rod 1722. The second screw rod 1722 extends in the left-right direction. The output end of the motor shaft of the second motor 1721 is transmission-connected to the second screw rod 1722, and the support column 14 is transmission-connected to the second screw rod 1722. Preferably, the second screw rod 1722 is a chrome-plated cylindrical rod, which can ensure the smoothness and strength of the second screw rod 1722, thereby ensuring the smoothness of the movement of the support column 14 relative to the second screw rod 1722. The second motor 1721 is a rotary servo motor, which can ensure that the second motor 1721 can normally drive the second screw rod 1722 to rotate.

[0050] Furthermore, if Figure 8 As shown, the fixing plate 12 is provided with a mounting hole for the hinge 210 , which facilitates the installation of the hinge 210 and the fixing plate 12 . At the same time, the fixing strength between the fixing plate 12 and the hinge 210 can be ensured, effectively preventing the fixing plate 12 and the hinge 210 from separating.

[0051] According to some embodiments of the present invention, referring to Figure 2 、 Figure 5 、 Figure 6 and Figure 7 The fixing device 10 further includes: a first bracket 15, a third drive mechanism 173, a second bracket 16, a fourth drive mechanism 174, and a fifth drive mechanism 175. The fixing plate 12 is rotatably mounted on the first bracket 15 about a first axis. The third drive mechanism 173 is used to drive the fixing plate 12 to rotate relative to the first bracket 15 about the first axis. The second bracket 16 is mounted on the upper end of the support column 14 and is rotatably mounted on the support column 14 about a second axis. The fourth drive mechanism 174 is connected to the second bracket 16 and is used to drive the second bracket 16 to rotate relative to the support column 14 about the second axis. The fifth drive mechanism 175 is connected to the first bracket 15 and is used to drive the first bracket 15 to move up and down relative to the second bracket 16.

[0052] In this way, the third driving mechanism 173 can realize the rotation of the fixed plate 12 around the first axis, the fourth driving mechanism 174 can drive the second bracket 16 to rotate around the second axis, and the second bracket 16 drives the first bracket 15 to rotate, thereby realizing the rotation of the fixed plate 12 around the second axis, and the fifth driving mechanism 175 can drive the first bracket 15 to move up and down relative to the second bracket 16, thereby driving the fixed plate 12 to move up and down.

[0053] For example, Figure 2 、 Figure 5 、 Figure 6 and Figure 7 As shown, the third driving mechanism 173 is provided on the first bracket 15, and the fixed plate 12 is provided on the first bracket 15. The third driving mechanism 173 drives the first bracket 15 to rotate around the first axis through the coupling 18, thereby realizing the rotation of the fixed plate 12 around the first axis. The second bracket 16 is provided at the upper end of the support column 14, and the first bracket 15 is provided in the second bracket 16. The fourth driving mechanism 174 is provided on the second bracket 16. The fourth driving mechanism 174 drives the second bracket 16 to rotate around the second axis through the coupling 18. The third driving mechanism 173 and the fourth driving mechanism 174 cooperate to realize the rotation of the fixed plate 12 around the first axis and the second axis. The fifth driving mechanism 175 is provided at the upper end of the second bracket 16, and the fifth driving mechanism 175 is connected to the first bracket 15.

[0054] Preferably, the third drive mechanism 173, the fourth drive mechanism 174 and the fifth drive mechanism 175 are all rotary servo motors, so that the third drive mechanism 173 can normally drive the fixed plate 12 to rotate, the fourth drive mechanism 174 can normally drive the second bracket 16 to rotate, and the fifth drive mechanism 175 can normally drive the first bracket 15 to move up and down, thereby ensuring that the third drive mechanism 173, the fourth drive mechanism 174 and the fifth drive mechanism 175 can normally drive the corresponding components to rotate.

[0055] Furthermore, a second protective plate 161 is provided at the lower end of the second bracket 16. The second protective plate 161 can facilitate the connection between the second bracket 16 and the support column 14. At the same time, when the second bracket 16 rotates relative to the support column 14, friction between the second bracket 16 and the support column 14 can be avoided, thereby protecting the second bracket 16.

[0056] According to some embodiments of the present invention, referring to Figure 1 and Figure 2The number of fixing devices 10 is multiple, that is, there are two, three, or four or more fixing devices 10, and they are suitable for one-to-one correspondence with the hinges 210 of the gull-wing door. This ensures that each hinge 210 of the gull-wing door can be fixed, thereby adapting to a variety of gull-wing doors 200, thereby improving the versatility of the test fixture 100 and improving the stability of the fixing devices 10 in fixing the gull-wing door 200.

[0057] For example, Figure 1 and Figure 2 As shown, there are two fixing devices 10 , which are spaced apart in the front-to-back direction, and each fixing device 10 fixes a hinge 210 of a gull-wing door.

[0058] According to some embodiments of the present invention, referring to Figure 1 and Figure 9 The test fixture 100 also includes a locking device 20, which includes a base 21 and a locking member 22. The locking member 22 is adapted to cooperate with the lock hole of the gull-wing door to lock the gull-wing door. Thus, the locking device 20 can cooperate with the fixing device 10 to ensure the reliability of the test fixture 100 in fixing the gull-wing door 200, effectively preventing the gull-wing door 200 from shaking relative to the test fixture 100, thereby facilitating the testing of the stiffness of the gull-wing door 200 and effectively improving the accuracy of the experimental data. At the same time, the locking member 22 locks the lock hole, simulating the state of the gull-wing door 200 when locked under actual working conditions, thereby ensuring the rationality of the fixed position.

[0059] When the test fixture 100 is used to fix the gull-wing door 200 , the hinge 210 is first fixed using the fixing device 10 , and then the locking member 22 of the locking device 20 is used to lock the lock hole. At this time, the fixing of the gull-wing door 200 is completed.

[0060] According to some optional embodiments of the present invention, referring to Figure 1 and Figure 9 The locking device 20 further includes a sliding member 23 slidably disposed on the base 11 in an up-down direction, and a locking member 22 disposed on the sliding member 23. Since the lock holes of different gull-wing doors 200 have different positions, the sliding member 23 can slide the locking member 22 to a suitable position, thereby ensuring that the locking member 22 can be fixed to the lock hole.

[0061] For example, Figure 1 and Figure 9 As shown, the base 21 is fixed on the ground, and a slide groove is provided on the base 21. Part of the structure of the sliding member 23 extends into the slide groove and can slide up and down along the slide groove. The locking member 22 is provided on the sliding member 23, so as to facilitate the connection between the locking member 22 and the lock hole.

[0062] According to some optional embodiments of the present invention, referring to Figure 1 and Figure 9 The locking device 20 further includes: a fixed shaft 24 and a limiting nut 25, the fixed shaft 24 is provided on the sliding member 23 and is arranged along the front-to-back direction (such as Figure 9 The front and rear directions shown in FIG) extend, and one end of the locking member 22 (as shown Figure 9 The left end of the locking member 22 shown in FIG. 1 is formed with a through hole, and the locking member 22 is rotatably mounted on the fixed shaft 24 through the through hole. The other end of the locking member 22 (as shown in FIG. Figure 9 The right end of the locking member 22 shown in the figure) is suitable for cooperating with the lock hole; the limiting nut 25 is sleeved on the fixed shaft 24 and arranged on both sides of the locking member 22 in the axial direction of the fixed shaft 24 (as shown in the figure); Figure 9 The limiting nut 25 is adapted to abut against the locking member 22 to limit the rotation of the locking member 22.

[0063] In this way, the locking member 22 is connected to the sliding member 23 through the fixed shaft 24, which facilitates the connection between the locking member 22 and the base 21. At the same time, the locking member 22 can only rotate relative to the fixed shaft 24, thereby limiting the movement of the locking member 22 relative to the fixed shaft 24, so as to limit the translational freedom of the gull-wing door 200, thereby facilitating the test of the stiffness of the gull-wing door 200.

[0064] For example, Figure 1 and Figure 9 As shown, the fixed shaft 24 extends in the front-to-back direction, and both ends of the fixed shaft 24 in the front-to-back direction are fixed to the sliding member 23. A through-hole is formed at the left end of the locking member 22, and the fixed shaft 24 is inserted into the through-hole. The limit nut 25 is sleeved on the fixed shaft 24 and is arranged on both the front and rear sides of the locking member 22 and abuts against the locking member 22. Preferably, the fixed shaft 24 is a stud, which is low in cost and convenient for mass production.

[0065] According to some embodiments of the present invention, referring to Figure 1 and Figure 10 The test fixture 100 may include a loading device 30, which includes a robotic arm 31 and a loading assembly 32. The loading assembly 32 is mounted on the robotic arm 31 and is used to apply a load to the gull-wing door. Thus, the robotic arm 31 can adjust the position of the loading assembly 32, so that the loading assembly 32 can apply the load to the gull-wing door at the appropriate position.

[0066] According to some optional embodiments of the present invention, referring to Figure 10 、 Figure 11 and Figure 12The loading device 30 further includes a positioning plate 33, a displacement feedback measurement assembly 34, and a second displacement measurement unit 35. The positioning plate 33 is connected to the end of the robotic arm 31, and the loading assembly 32 is fixed to the robotic arm 31 via the positioning plate 33. The displacement feedback measurement assembly 34 is fixed to the positioning plate 33 and is used to measure the displacement of the positioning plate 33 relative to the base 11. The second displacement measurement unit 35 is used to detect the displacement of the gull-wing door 200.

[0067] In this way, the positioning plate 33 can provide a fixed position for the displacement feedback measurement component 34 and the loading component 32, thereby facilitating the installation of the displacement feedback measurement component 34 and the loading component 32. At the same time, the displacement feedback measurement component 34 is arranged on the positioning plate 33. When detecting the displacement of the positioning plate 33 relative to the base 11, it will not be affected by the loading process of the loading component 32, thereby obtaining the accurate displacement of the positioning plate 33 relative to the base 11.

[0068] During the loading process of the loading component 32, the displacement feedback measurement component 34 measures the displacement of the positioning plate 33 relative to the base 11 as the displacement caused by insufficient rigidity of the robotic arm 31. The second displacement measurement unit 35 detects that the displacement of the gull-wing door 200 deformation includes the combined displacement of the positioning plate 33 relative to the base 11 and the displacement caused by insufficient rigidity of the robotic arm 31. Therefore, the displacement data measured by the second displacement measurement unit 35 is subtracted from the displacement data measured by the displacement feedback measurement component 34 to obtain the displacement of the gull-wing door 200 relative to the base 11, thereby ensuring that the loading device 30 can be accurately loaded.

[0069] For example, Figure 10 、 Figure 11 and Figure 12 As shown, the positioning plate 33 is fixed to the front end of the robot arm 31, the loading assembly 32 is fixed to the front surface of the positioning plate 33, and the displacement feedback measurement assembly 34 is fixed to the positioning plate 33. Preferably, the second displacement measurement unit 35 is a laser displacement sensor, which can ensure the accuracy of the displacement measured by the second displacement measurement unit 35.

[0070] Furthermore, if Figure 10 and Figure 14As shown, the displacement feedback measurement assembly 34 includes: a support 341, a connecting rod 342, and a first displacement measurement unit 343. The support 341 is magnetically connected to the positioning plate 33, and the first displacement measurement unit 343 is connected to the support 341 via the connecting rod 342. As a result, the magnetic connection is simple, which can facilitate the fixation of the displacement feedback measurement assembly 34 to the positioning plate 33. At the same time, the connecting rod 342 can fix the first displacement measurement unit 343 in a suitable position, thereby facilitating the first displacement measurement unit 343 to measure displacement data. Furthermore, the first displacement measurement unit 343 can ensure the accuracy of the measurement data, thereby ensuring that the loading assembly 32 can accurately load the gull-wing door.

[0071] Preferably, the first displacement measuring unit 343 is a laser displacement sensor, which can ensure the accuracy of the displacement measured by the first displacement measuring unit 343.

[0072] According to some optional embodiments of the present invention, referring to Figure 1 and Figure 15 The loading device 30 further includes a control assembly 36 electrically connected to the loading device 30 and the fixing device 10. Thus, the control assembly 36 controls the loading device 30, thereby loading the gull-wing door without manual operation, thereby accurately controlling the loading load and loading position, thereby ensuring the accuracy of the experimental data. Simultaneously, the control assembly 36 controls the fixing device 10, thereby automatically fixing the gull-wing door 200, thereby improving fixing efficiency and saving testing time.

[0073] Furthermore, if Figure 1 and Figure 15 As shown, the control assembly 36 includes a workbench 361, an industrial computer 362, a display 363, a data acquisition box 364, and a control cabinet 365. The industrial computer 362 and data acquisition box 364 are located within the workbench 361, the display 363 is located above the workbench 361, and the control cabinet 365 is located on one side of the workbench 361. Thus, the industrial computer 362 can control the robotic arm 31 and the fixture 10, thereby enabling automated operation of the fixture 10 and the loading device 30. The side of the data acquisition box 364 is provided with multiple communication interfaces for communicating with the force measurement unit 324 and the second displacement measurement unit 35. The data acquisition box 364 is equipped with dedicated acquisition software that can output the force and displacement signals collected by the data acquisition box 364 and also feed back loading information to the control cabinet to control the loading of the third motor 321. Furthermore, the display 363 allows for viewing the collected data.

[0074] Reference below Figures 1-16 A test fixture 100 according to the present invention is described.

[0075] According to the test tool 100 of the embodiment of the present invention, Figure 1 As shown, the test fixture 100 includes: a fixing device 10 , a locking device 20 and a loading device 30 .

[0076] The fixing device 10 includes: a base 11, a fixing plate 12, a bottom plate 13, a support column 14, a first bracket 15, a second bracket 16, a first driving mechanism 171, a second driving mechanism 172, a third driving mechanism 173, a fourth driving mechanism 174 and a fifth driving mechanism 175. Specifically, the base 11 is arranged on the ground, the bottom plate 13 is movably arranged on the base 11 in the front-back direction, the first driving mechanism 171 is arranged on the base 11, the first driving mechanism 171 includes a first motor 1711 and a first screw rod 1712, the first screw rod 1712 is connected to the output end of the motor shaft of the first motor 1711, the base 11 is passed through the first screw rod 1712, the support column 14 extends in the up-down direction, the lower end of the support column 14 is connected to the bottom plate 13, the upper end of the support column 14 extends upward, the second driving mechanism 172 is arranged on the bottom plate 13, the second driving mechanism 172 includes a second The motor 1721 and the second screw rod 1722, the second screw rod 1722 is connected to the output end of the motor shaft of the second motor 1721, the support column 14 is transmission-connected to the first screw rod 1712, the second bracket 16 is arranged at the upper end of the support column 14, the first bracket 15 is connected to the second bracket 16, the fixing plate 12 is connected to the first bracket 15, the third driving mechanism 173 is arranged on the first bracket 15, the fixing plate 12 is connected to the output end of the motor shaft of the third driving mechanism 173, the fourth driving mechanism 174 is arranged on the lower side of the second bracket 16, and the fifth driving mechanism 175 is arranged on the upper side of the second bracket 16.

[0077] The locking device 20 includes: a base 21, a locking member 22, a sliding member 23, a fixed shaft 24 and a limiting nut 25. The base 21 is fixed to the ground. A slide groove is provided on the base 21. The left end of the sliding member 23 fits in the slide groove and can move up and down in the slide groove. The fixed shaft 24 is provided on the sliding member 23 and extends in the front and rear directions. A through hole is formed at the left end of the locking member 22. The locking member 22 is rotatably sleeved on the fixed shaft 24 through the through hole. The right end of the locking member 22 is suitable for cooperating with the lock hole. The limiting nut 25 is sleeved on the fixed shaft 24 and arranged on the front and rear sides of the locking member 22 on the fixed shaft 24. The limiting nut 25 is suitable for abutting against the locking member 22 to limit the rotation of the locking member 22.

[0078] The loading device 30 includes a robotic arm 31, a loading assembly 32, a positioning plate 33, a displacement feedback measurement assembly 34, a second displacement measurement unit 35, and a control assembly 36. The robotic arm 31 is electrically connected to the control assembly 36. The positioning plate 33 is located at the left end of the robotic arm 31. The loading assembly 32 and the displacement feedback measurement assembly 34 are fixed to the positioning plate 33. The loading assembly 32 includes a third motor 321, a baffle 322, a loading head 323, and a force measurement unit 324. The force measurement unit 324 is a tension-compression force sensor. The third motor 321 and the second displacement measurement unit 35 are fixed to the positioning plate 33. The baffle 322 is fixed to the output shaft of the third motor 321. The loading head 323 is located at the end of the output shaft of the third motor 321. The force measurement unit 324 is also located on the output shaft of the third motor 321.

[0079] The displacement feedback measurement assembly 34 includes: a support 341 , a connecting rod 342 and a first displacement measurement unit 343 . The support 341 is magnetically connected to the positioning plate 33 , and the first displacement measurement unit 343 is connected to the support 341 via the connecting rod 342 .

[0080] The control component 36 includes: a workbench 361, an industrial computer 362, a display 363, a data acquisition box 364 and a control cabinet 365. The industrial computer 362 and the data acquisition box 364 are arranged in the workbench 361. The industrial computer 362 and the data acquisition box 364 are electrically connected to the robotic arm 31 and the fixing device 10. The display 363 is arranged on the upper side of the workbench 361, and the control cabinet 365 is arranged on one side of the industrial computer 362.

[0081] When the test fixture 100 is used to test the stiffness of the gull-wing door, the fixing plate 12 is first fixed to the hinge 210 of the gull-wing door. When the fixing plate 12 is connected to the hinge 210, the first driving mechanism 171 is first controlled by the industrial computer 362 to operate, the first motor 1711 drives the first screw rod 1712 to rotate, and the first screw rod 1712 drives the bottom plate 13 to move forward and backward. Then the industrial computer 362 controls the second driving mechanism 172 to operate, the second motor 1721 drives the second screw rod 1722 to rotate, and the second screw rod 1722 drives the support column 14 to move left and right. Then the industrial computer 362 controls the fifth driving mechanism 175 to operate, and the fifth driving mechanism 175 drives the first bracket 15 to move relative to the first bracket 15. The second bracket 16 moves in the up and down directions, and the first bracket 15 drives the fixed plate 12 to move up and down. Then the industrial computer 362 controls the third driving mechanism 173 to operate, and the third driving mechanism 173 drives the fixed plate 12 to rotate around the first axis relative to the first bracket 15. Then the industrial computer 362 controls the fourth driving mechanism 174 to operate, and the fourth driving mechanism 174 drives the second bracket 16 to rotate around the second axis relative to the support column 14. The second bracket 16 drives the first bracket 15 to rotate around the second axis until the fixed plate 12 is in a suitable connection position, and then the hinge 210 is fixed to the gull-wing door, and the fixed plates 12 of the two fixing devices 10 need to be connected to the two hinges 210 of the gull-wing door respectively.

[0082] After the fixing plate 12 of the fixing device 10 is connected to the hinge 210, the sliding member 23 of the sliding locking device 20 is moved in the up and down directions relative to the base 21 until the locking member 22 moves to a suitable position, and then the locking member 22 is fixed to the lock hole.

[0083] After the gull-wing door and locking device 20 are secured, the industrial computer 362 is first used to control the robotic arm 31 to move to the appropriate position. The third motor 321 then drives the loading head 323 to apply a load to the gull-wing door. During this operation, the first displacement measurement unit 343 of the displacement feedback measurement assembly 34 detects the displacement of the positioning plate 33 relative to the base 11. The second displacement measurement unit 35 is used to detect the deformation of the gull-wing door 200. The displacement data of the positioning plate 33 relative to the base 11 obtained by the first displacement measurement unit 343 is subtracted from the displacement data of the gull-wing door obtained by the second displacement measurement unit 35 to determine the deformation displacement of the gull-wing door 200. Simultaneously, the data acquisition box 364 collects the measured stiffness of the gull-wing door, and the display 363 displays the stiffness of the gull-wing door, facilitating observation of the stiffness of the gull-wing door.

[0084] The test fixture 100 of this embodiment is provided with a fixing device 10, and the gull-wing door is fixed on the fixing device 10 to test the stiffness of the gull-wing door, so that the stiffness of the gull-wing door can be accurately obtained to ensure the accuracy of the experimental data. At the same time, it can effectively avoid interference from other structures, reduce the difficulty of detection, and thus effectively improve the detection efficiency.

[0085] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and 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 should not be understood as a limitation to the present invention.

[0086] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0087] In this utility model, unless otherwise expressly specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0088] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0089] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A test fixture (100) for testing the structural stiffness of a gull-wing door, wherein the gull-wing door comprises a hinge (210) for connecting to a vehicle body, wherein: The test tool (100) comprises: A fixing device (10) includes a base (11) and a fixing plate (12), wherein the fixing plate (12) is movable relative to the base (11) in the front-to-back direction, the left-to-right direction, and the up-to-down direction, and the fixing plate (12) is rotatable around a first axis and a second axis, wherein the first axis is parallel to the front-to-back direction, and the second axis is parallel to the up-to-down direction, and the fixing plate (12) has a fixing portion for fixing the hinge (210).

2. The test fixture (100) according to claim 1, characterized in that: The fixing device (10) further comprises: a bottom plate (13), the bottom plate (13) being movably arranged on the base (11) along a front-rear direction; a first driving mechanism (171), the first driving mechanism (171) being used to drive the bottom plate (13) to move forward and backward relative to the base (11); A support column (14), the support column (14) extending up and down, the support column (14) being arranged on the bottom plate (13) and movable in a left-right direction relative to the base (11); A second driving mechanism (172), the second driving mechanism (172) is used to drive the support column (14) to move left and right relative to the base (11).

3. The test fixture (100) according to claim 2, characterized in that: The fixing device (10) further comprises: a first bracket (15), the fixing plate (12) being rotatably arranged on the first bracket (15) around the first axis; a third driving mechanism (173), the third driving mechanism (173) being used to drive the fixing plate (12) to rotate relative to the first bracket (15) around the first axis; a second bracket (16), the second bracket (16) being arranged at the upper end of the support column (14), the second bracket (16) being rotatably arranged on the support column (14) around the second axis; a fourth driving mechanism (174), the fourth driving mechanism (174) being connected to the second bracket (16) and being used to drive the second bracket (16) to rotate relative to the support column (14) around the second axis; A fifth driving mechanism (175) is connected to the first bracket (15) and is used to drive the first bracket (15) to move up and down relative to the second bracket (16).

4. The test fixture (100) according to claim 1, characterized in that The number of the fixing devices (10) is multiple and is suitable for one-to-one correspondence with the hinges (210) of the gull-wing door.

5. The test fixture (100) according to claim 1, characterized in that: Also includes: A locking device (20) comprises a base (21) and a locking member (22), wherein the locking member (22) is adapted to cooperate with a lock hole of the gull-wing door to lock the gull-wing door.

6. The test fixture (100) according to claim 5, characterized in that: The locking device (20) further includes a sliding member (23), the sliding member (23) being slidably arranged on the base (11) in an up-down direction, and the locking member (22) being arranged on the sliding member (23).

7. The test fixture (100) according to claim 6, characterized in that: The locking device (20) further comprises: a fixed shaft (24), the fixed shaft (24) being arranged on the sliding member (23) and extending in the front-rear direction, one end of the locking member (22) being formed with a through hole, the locking member (22) being rotatably sleeved on the fixed shaft (24) through the through hole, and the other end of the locking member (22) being adapted to cooperate with the locking hole; A limiting nut (25) is sleeved on the fixed shaft (24) and arranged on both sides of the locking member (22) in the axial direction of the fixed shaft (24). The limiting nut (25) is suitable for abutting against the locking member (22) to limit the rotation of the locking member (22).

8. The test fixture (100) according to claim 1, characterized in that: Also includes: A loading device (30) comprises a mechanical arm (31) and a loading assembly (32). The loading assembly (32) is arranged on the mechanical arm (31) and is used to apply a load to the gull-wing door.

9. The test fixture (100) according to claim 8, characterized in that: The loading device (30) further comprises: a positioning plate (33), the positioning plate (33) being connected to the end of the mechanical arm (31), and the loading assembly (32) being fixed to the mechanical arm (31) via the positioning plate (33); a displacement feedback measurement component (34), the displacement feedback measurement component (34) being fixed to the positioning plate (33), and the displacement feedback measurement component (34) being used to measure the displacement of the positioning plate (33) relative to the base (11); A second displacement measuring unit (35) is used to detect the displacement of the deformation of the gull-wing door (200).

10. The test fixture (100) according to claim 8, characterized in that: The loading device (30) further includes a control component (36), wherein the control component (36) is electrically connected to the loading device (30) and the fixing device (10).

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