Detection device for new energy automobile brake production

Abstract

The invention belongs to the technical field of vehicle part testing, and particularly relates to a detection device for new energy automobile brake production, which comprises a detection table, a test hub and an automatic test assembly, and further comprises an automatic material changing assembly, and the automatic material changing assembly is mounted on the test table. The automatic material changing assembly is used for automatically changing the brake disc on the tested hub; by arranging the automatic material changing assembly, when the brake discs are detected in batches, the brake discs and the tested hub can be quickly and conveniently assembled and disassembled through periodic rotation of a replacement frame, cooperation with left-right movement of a connecting pin and cooperation with the positions of a positioning ring, a mounting groove and the brake discs, and the brake discs and the tested hub can be quickly and conveniently assembled and disassembled through position changes. According to the brake disc detection device, the automation degree of assembly, disassembly and detection of the brake disc is improved, the labor intensity of workers is effectively reduced, and the detection efficiency is effectively improved in batch detection operation of the brake disc due to the fact that assembly and disassembly are carried out at the same time and test and replacement are carried out at the same time.

Description

Technical Field

[0001] The present invention belongs to the technical field of vehicle component testing, and in particular relates to a testing device for the production of new energy vehicle brakes. Background Art

[0002] As a key safety component of a vehicle, the performance of the automobile brake is directly related to driving safety. The brake disc is one of its important components. During the production and assembly of automobile brakes, the performance of the brake disc directly affects the performance of the automobile brake. Therefore, qualified brake discs are an important guarantee of automobile brake quality.

[0003] In order to ensure that the performance of the brake disc meets the standards, it is usually necessary to test the brake disc performance, especially for the new energy electric vehicles popular on the market. Due to the significant difference in driving mechanism between new energy electric vehicles and traditional fuel vehicles, new energy electric vehicles brake faster than traditional fuel vehicles, and also have higher requirements for the production inspection of the brake system. In addition to conventional parameter tests such as hardness test, thermal expansion test, and friction coefficient test, its test items also need to conduct simulated braking tests such as braking time test and braking effect test. When conducting simulated braking tests, the brake disc needs to be assembled and unassembled with the test wheel hub by bolts. Frequent disassembly and assembly of the brake disc not only leads to excessive labor intensity for the staff, but also affects the test rate of the brake disc, which is not conducive to the rapid testing of batch brake discs.

[0004] To enable rapid assembly and disassembly of brake discs during batch testing, our company developed, designed, and filed a patent application for a brake disc debugging device for automotive parts, application number CN2023113808006. During batch testing, this device incorporates a positioning assembly, a clamping mechanism, and a drive assembly. During the debugging and testing of automotive brake discs, the brake disc body is inserted onto a rotating shaft. Activating a rotary motor causes the locking post at the end of the operating column to engage and secure within a retaining groove on a circular mounting bar, effectively positioning the brake disc body. This increases the automation level of brake disc assembly and disassembly, reducing the workload for testers. During subsequent application and optimization phases, research revealed that while the first-generation product significantly reduced tester labor intensity, its operational efficiency and work saturation were low during the cycle of brake disc installation, testing, removal, and replacement. Furthermore, since the brake disc temperature exceeded normal limits after testing, heat dissipation treatment was required. To address these issues, our R&D team, building on the first-generation product, continued to conduct in-depth improvements and designs, successfully developing the second-generation product.

[0005] In view of this, the present invention proposes a detection device for new energy vehicle brake production to solve the above technical problems. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art and solve the above-mentioned technical problems, the present invention proposes a detection device for the production of new energy vehicle brakes.

[0007] The technical solution adopted by the present invention to solve its technical problem is as follows: a new energy vehicle brake production testing device according to the present invention comprises a testing platform, a test hub and an automatic testing assembly. The test hub is rotatably mounted on the testing platform and is used to mount a brake disc. The automatic testing assembly is used to test the braking effect of the brake disc.

[0008] It also includes an automatic material changing assembly, which is installed on the test bench and is used to automatically change the brake disc on the test wheel hub;

[0009] The automatic material changing assembly comprises:

[0010] A replacement rack, wherein a rotating slot is provided on the inspection table, and the replacement rack is rotatably installed in the rotating slot. The replacement rack is a circular frame structure, and a mounting slot is provided on the replacement rack, and the height and width of the mounting slot are the same as the diameter of the brake disc;

[0011] A driving roller is rotatably mounted in the rotating groove, the driving roller is frictionally driven by the replacement frame, and the driving roller is externally connected to a driving motor;

[0012] Positioning ring: a symmetrically designed positioning ring is fixedly installed inside the replacement frame, and a test hub is rotatably installed on each positioning ring;

[0013] A connecting pin is installed between the two positioning rings, a connecting hole is opened on the test hub, the connecting hole is aligned with the connecting pin, and the connecting pin is used to connect the brake disc and the test hub;

[0014] A driving assembly is installed on the positioning ring and is used to drive the connecting pin to alternately engage with the brake discs on both sides.

[0015] Preferably, the drive assembly includes:

[0016] Screws and nuts: evenly distributed screws are installed between the two positioning rings, nuts are fixedly installed in the middle of the connecting pins, the nuts are sleeved on the screws, and the nuts and screws are spirally driven;

[0017] A retaining frame and a movable frame, wherein the retaining frame is installed on both ends of the screw rod, and the movable frame is fixedly installed on the nut;

[0018] Gears and gear rings: Gears are fixedly installed at both ends of the screw, and a gear ring is commonly sleeved on the outside of the multiple gears. The gear ring is rotatably mounted on the positioning ring, and tooth grooves are opened on both the inner and outer sides of the gear ring;

[0019] A test motor and a transmission wheel are installed on the detection platform, and the test motor, the transmission wheel and the gear ring are sequentially connected in transmission.

[0020] Preferably, a telescopic slot is provided on the testing platform, a telescopic block is elastically installed in the telescopic slot by a spring, the telescopic block extends to the gap of the positioning ring, the transmission wheel is rotatably installed on the telescopic block, the output end of the test motor extends into the telescopic slot, and the output end of the test motor is connected to the transmission wheel through a belt drive.

[0021] Preferably, a pair of limiting rings are fixedly installed at both ends of the connecting pin, and the two test wheel hubs are respectively located in the gaps of the limiting rings, and the movement distance of the connecting pin is greater than the spacing between the same pair of limiting rings. A separation groove is jointly provided on the replacement frame and the test table, and the separation groove is conductively connected to the installation groove, and the diameter of the separation groove is greater than the diameter of the brake disc.

[0022] Preferably, a feed trough and a discharge trough are respectively provided on both sides of the testing platform, the feed trough is aligned with the mounting trough, the discharge trough is aligned with the separation trough, and the feed trough is located on the side of the testing platform away from the automatic testing component.

[0023] Preferably, the feed chute and the discharge chute are staggered in width direction.

[0024] Preferably, a feed rail and a discharge rail are respectively installed on both sides of the detection platform, and the feed rail is arranged to be tilted upward away from the side of the detection platform.

[0025] Preferably, compression bags are fixedly installed on both sides of the movable frame, filling sleeves are fixedly installed on both ends of the connecting pin, and the filling sleeves are conductively connected to the compression bags via a catheter.

[0026] Preferably, the maximum distance between the compression bag and the retaining frame is smaller than the moving distance of the connecting pin and larger than the distance between the same pair of limiting rings.

[0027] Preferably, an infrared receiving board is fixedly mounted on the detection platform, and infrared emitters are mounted on both ends of the connecting pin.

[0028] The beneficial effects of the present invention are as follows:

[0029] 1. The present invention provides a new energy vehicle brake production testing device, which, by setting an automatic material changing component, can quickly and conveniently assemble and disassemble the brake disc and the test wheel hub through the periodic rotation of the replacement frame, the left and right movement of the connecting pin, the coordination of the positioning ring, the mounting groove and the brake disc position during batch testing of the brake disc. The change in position improves the degree of automation in the loading and unloading and testing of the brake disc, effectively reducing the labor intensity of the staff. Moreover, since assembly and disassembly, testing and replacement are carried out simultaneously, the testing efficiency is effectively improved in the batch testing operation of the brake disc.

[0030] 2. The present invention relates to a detection device for the production of brakes for new energy vehicles. The device drives the connecting pin to move linearly between the two brake discs through the transmission of the gear ring, gear, screw and nut, thereby changing the connection relationship between the connecting pin and the brake disc, that is, the connecting pin is separated from the brake disc after detection and connected to the brake disc to be detected, thereby allowing the two brake discs to be disassembled and installed simultaneously. Then, by limiting the movement distance of the nut on the screw, after the connecting pin and the brake disc to be detected are combined, the nut and the screw are locked, thereby allowing the gear ring to directly drive the overall structure formed by multiple gears, screw, nut, connecting pin and brake disc to rotate, and cooperate with the automatic testing component to detect the braking effect of the brake disc. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present invention will be further described below with reference to the accompanying drawings.

[0032] Figure 1 is a perspective view of the present invention;

[0033] Figure 2 It is a three-dimensional diagram from another perspective of the present invention;

[0034] Figure 3 It is a three-dimensional diagram of the testing table;

[0035] Figure 4 This is the assembly drawing of the automatic material change component and the brake disc;

[0036] Figure 5 It is a three-dimensional diagram of the automatic material change component;

[0037] Figure 6 It is a partial structural perspective diagram of the drive assembly;

[0038] Figure 7 It is a three-dimensional diagram of the assembly of the moving frame, connecting pins and nuts;

[0039] Figure 8 is a cross-sectional view of the connecting pin;

[0040] Figure 9 is a longitudinal sectional view of the present invention;

[0041] Figure 10 is a transverse cross-sectional view of the present invention;

[0042] In the figure: 1. Test table; 11. Test hub; 12. Automatic test assembly; 2. Replacement frame; 21. Rotating slot; 22. Mounting slot; 23. Drive roller; 24. Drive motor; 25. Positioning ring; 26. Connecting pin; 27. Connecting hole; 3. Screw; 31. Nut; 32. Retaining frame; 33. Moving frame; 34. Gear; 35. Gear ring; 36. Test motor; 37. Transmission wheel; 4. Telescopic slot; 41. Telescopic block; 5. Limiting ring; 51. Separation slot; 52. Feed trough; 53. Feed rail; 54. Discharge rail; 55. Compression bag; 56. Filling sleeve; 57. Infrared receiving board; 58. Discharge trough. DETAILED DESCRIPTION

[0043] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0044] like Figures 1 to 10 As shown, the present invention provides a new energy vehicle brake production testing device, comprising a testing platform 1, a testing wheel hub 11, and an automatic testing assembly 12. The testing wheel hub 11 is rotatably mounted on the testing platform 1 and is used to mount a brake disc. The automatic testing assembly 12 is used to perform a braking effect test on the brake disc.

[0045] It also includes an automatic material changing assembly, which is installed on the test bench and is used to automatically change the brake disc on the test wheel hub 11;

[0046] The automatic material changing assembly comprises:

[0047] The replacement frame 2 is provided with a rotation slot 21 on the test table 1, and the replacement frame 2 is rotatably installed in the rotation slot 21. The replacement frame 2 is a circular frame structure. The replacement frame 2 is provided with a mounting slot 22, and the height and width of the mounting slot 22 are the same as the diameter of the brake disc;

[0048] A driving roller 23 is rotatably mounted in the rotating groove 21 . The driving roller 23 is frictionally driven by the replacement rack 2 . The driving roller 23 is externally connected to a driving motor 24 .

[0049] Positioning ring 25: A symmetrically designed positioning ring 25 is fixedly installed inside the replacement frame 2, and a test hub 11 is rotatably mounted on each positioning ring 25;

[0050] A connecting pin 26 is installed between the two positioning rings 25. A connecting hole 27 is opened on the test hub 11. The connecting hole 27 is aligned with the connecting pin 26. The connecting pin 26 is used to connect the brake disc and the test hub 11;

[0051] A driving assembly is installed on the positioning ring 25 and is used to drive the connecting pin 26 to alternately engage with the brake discs on both sides.

[0052] As an important component of automobile brakes, the performance of the brake disc will directly or indirectly affect the performance of the final assembled automobile brake. In order to ensure the rationality of the brake disc performance, the brake disc needs to be actually tested. In order to enhance the convenience of the brake disc braking effect test, the present invention is improved on the basis of the first-generation brake disc debugging device. By arranging an automatic material changing component on the test bench 1, the labor workload of the staff is further reduced while effectively accelerating the inspection efficiency of the brake disc.

[0053] Specifically, in the present invention, an automatic testing component 12 and an automatic material changing component are installed on the testing platform 1, wherein the automatic testing component 12 is installed on one side of the testing platform 1 and corresponds to one of the mounting slots 22. The automatic testing component at least includes a slot body connected to the rotating slot 21, a testing component, and a hydraulic push rod for pushing the testing device to cooperate with the brake disc. According to different actual testing items, the testing components are divided into hydraulic calipers, speed detectors, temperature detectors and other testing components. In the actual operation process, through the cooperation of a pre-set program, the automatic testing component is extended into the mounting slot 22 and assembled with the brake disc. Then, during the rotation of the brake disc, the braking performance of the brake disc is detected. After the detection is completed, the automatic detection component is separated from the rotating groove 21, and the automatic material changing component on the detection table 1 can load, unload and replace the brake disc. Since the replacement rack 2 is rotatably installed in the rotating groove 21, and the symmetrically designed mounting groove 22 opened on the replacement rack 2 is connected to the outside world, when replacing the brake disc, the driving motor 24 drives the driving roller 23 to rotate. Under the friction transmission effect between the driving roller 23 and the replacement rack 2, the replacement rack 2 is prompted to rotate in the rotating groove 21. When the replacement rack 2 rotates 180 degrees, the positions of the two mounting grooves 22 on the replacement rack 2 will be adjusted. The positions are swapped, and the test wheel hub 11 installed in the mounting groove 22 is swapped with the brake disc in the same position, and then the driving component drives the connecting pin 26 to move. Since the two ends of the connecting pin 26 extend to the connecting holes 27 of the two test wheel hubs 11 respectively, with the linear movement of the connecting pin 26, the connecting pin 26 will gradually move toward the mounting groove 22 of the corresponding automatic detection component, and the brake disc in the mounting groove 22 on the side of the automatic detection component is combined with the connecting pin 26, and the brake disc in the mounting groove 22 away from the side of the automatic detection component is separated from the connecting pin 26. As the brake disc and the connecting pin 26 are separated, the mounting groove 22 away from the side of the automatic detection component is The brake disc in the mounting slot 22 can be removed and replaced. At the same time, the brake disc in the other mounting slot 22 cooperates with the automatic detection component to perform performance parameter testing. When the test is completed, the replacement frame 2 is driven to rotate one hundred and eighty degrees again with the cooperation of the drive motor 24 and the drive roller 23, so that the position of the brake disc that has been tested and the brake disc that has not been tested can be swapped again. With the movement of the connecting pin 26, the brake disc that has been tested can be separated from the test wheel hub 11, and the brake disc that has not been tested can be assembled with the connecting pin 26 and the test wheel hub 11. In the continuous cycle process, the braking performance of batches of brake discs can be tested.

[0054] The present invention sets an automatic material replacement component. When testing brake discs in batches, the brake disc and the test wheel hub 11 can be quickly and conveniently assembled and disassembled by replacing the periodic rotation of the replacement frame 2, coordinating the left and right movement of the connecting pin 26, and coordinating the positioning ring 25, the mounting groove 22 and the position of the brake disc. The change in position improves the degree of automation in the loading and unloading and testing of the brake disc, effectively reducing the labor intensity of the staff. Moreover, since assembly and disassembly are carried out simultaneously, and testing and replacement are carried out simultaneously, the testing efficiency is effectively improved in the batch testing operation of the brake disc.

[0055] As a preferred embodiment of the present invention, the drive assembly includes:

[0056] Screw 3 and nut 31, the screw 3 is evenly distributed between the two positioning rings 25, and the middle of the connecting pin 26 is fixed with a nut 31, the nut 31 is sleeved on the screw 3, and the nut 31 and the screw 3 are spirally driven;

[0057] The retaining frame 32 and the movable frame 33 are installed on both ends of the screw rod 3, and the movable frame 33 is fixedly installed on the nut 31;

[0058] Gears 34 and gear rings 35. Gears 34 are fixedly mounted on both ends of the screw 3. A gear ring 35 is sleeved on the outside of the plurality of gears 34. The gear ring 35 is rotatably mounted on the positioning ring 25. Tooth grooves are provided on both the inner and outer sides of the gear ring 35.

[0059] A test motor 36 and a transmission wheel 37 are installed on the testing platform 1 , and the test motor 36 , the transmission wheel 37 and the gear ring 35 are sequentially connected in transmission.

[0060] When the brake disc after inspection is exchanged with the brake disc to be inspected, the test motor 36 is started. Since the test motor 36, the transmission wheel 37, the gear ring 35 and the gear 34 are driven in sequence, when the output end of the test motor 36 rotates, the transmission wheel 37, the gear ring 35 and the gear 34 will be driven to rotate synchronously. The gear 34 is fixedly mounted on the screw 3, and the nut 31 is spirally driven with the screw 3, and the screw 3 and the nut 31 are respectively mounted on the retaining frame 32 and the moving frame 33. Therefore, the gear 34 drives the screw 3 to rotate. Under the effect of the spiral transmission, the nut 31 moves linearly along the axis direction of the screw 3. When the nut 31 moves, it pushes the connecting pin 26 to move, thereby causing the connecting pin 26 to move linearly between the two brake discs, causing the connecting pin 26 to move linearly between the two brake discs, resulting in the connecting pin 26 to move linearly between the two brake discs. The connecting pin 26 is separated from the brake disc that has been tested and combined with the brake disc to be tested. As the screw 3 continues to rotate, when the nut 31 moves to the end of the screw 3, the nut 31 is locked with the screw 3. Under the action of the retaining frame 32 and the movable frame 33, the screw 3 and the gear 34 cannot rotate on their own. As the gear ring 35 continues to apply driving force to the gear 34, the gear 34, the screw 3, and the nut 31 rotate around the axis of the gear ring 35. Since the connecting pin 26 fixedly connected to the nut 31 is inserted into the brake disc to be tested, the rotation of the connecting pin 26 will drive the test hub 11 and the brake disc to rotate synchronously, and cooperate with the automatic test component 12 to detect the braking time, braking effect, etc. of the brake disc.

[0061] The present invention drives the connecting pin 26 to move linearly between the two brake discs through the transmission of the gear ring 35, gear 34, screw 3 and nut 31, thereby changing the connection relationship between the connecting pin 26 and the brake disc, that is, the connecting pin 26 is separated from the brake disc after detection and connected to the brake disc to be detected, thereby allowing the two brake discs to be disassembled and installed simultaneously, and then using the nut 31 to limit the movement distance on the screw 3, after the connecting pin 26 is combined with the brake disc to be detected, the nut 31 is locked with the screw 3, thereby allowing the gear ring 35 to directly drive the overall structure formed by multiple gears 34, screw 3, nut 31, connecting pin 26 and brake disc to rotate, and cooperate with the automatic testing component 12 to detect the braking effect of the brake disc.

[0062] As a preferred embodiment of the present invention, a telescopic slot 4 is provided on the testing platform 1, and a telescopic block 41 is elastically installed in the telescopic slot 4 through a spring, and the telescopic block 41 extends to the gap of the positioning ring 25. The transmission wheel 37 is rotatably installed on the telescopic block 41, and the output end of the test motor 36 extends into the telescopic slot 4, and the output end of the test motor 36 is connected to the transmission wheel 37 through a belt drive.

[0063] Since the gear ring 35 rotates with the replacement frame 2, there is relative rotation between the gear ring 35 and the transmission wheel 37 when the brake disc position is switched. Therefore, the transmission wheel 37 is installed on the telescopic block 41, and the telescopic block 41 is installed in the telescopic slot 4. The transmission wheel 37 on the telescopic block 41 is engaged with the gear ring 35 through a spring. When the gear ring 35 rotates, the rotation of the gear ring 35 will cause force to be applied to the transmission wheel 37, and the transmission wheel 37 pushes the telescopic block 41 to compress the spring until the gear ring 35 completes a one hundred and eighty degree rotation. At this time, under the support of the spring, the transmission wheel 37 engages with the gear ring 35 again, thereby reducing the damage caused by the relative rotation between the gear ring 35 and the transmission wheel 37 while ensuring the meshing effect of the gear ring 35 and the transmission wheel 37.

[0064] As a preferred embodiment of the present invention, a pair of limiting rings 5 are fixedly installed at both ends of the connecting pin 26, and the two test wheel hubs 11 are respectively located in the gaps of the limiting rings 5, and the movement distance of the connecting pin 26 is greater than the spacing between the same pair of limiting rings 5. A separation groove 51 is commonly provided on the replacement rack 2 and the test table 1, and the separation groove 51 is conductively connected to the installation groove 22. The diameter of the separation groove 51 is greater than the diameter of the brake disc.

[0065] When the driving motor 24 is started, the driving roller 23 and the replacement rack 2 are rotated, and the side of the replacement rack 2 installed with the tested brake disc rotates downward, and the side installed with the brake disc to be tested rotates upward. Under the action of gravity, the brake disc to be tested fits with the test wheel hub 11, and then when the driving component drives the connecting pin 26 to move, the connecting pin 26 gradually moves away from the tested brake disc and inserts into the brake disc to be tested, and at this time, the connecting pin 26 and the test wheel hub 11 produce relative movement. As the connecting pin 26 continues to move, when the limiting ring 5 fits with the test wheel hub 11, since the diameter of the limiting ring 5 is larger than the diameter of the connecting hole 27, and the movement distance of the connecting pin 26 is greater than the same pair The spacing between the limiting rings 5, so the connecting pin 26 and the limiting ring 5 push the test hub 11 and the brake disc to move. It should be noted that the test hub 11 cannot always leave the range of the positioning ring 25 before and after movement, and as the brake disc to be tested continues to move, the brake disc is finally aligned with the separation groove 51. At this time, under the action of gravity, the brake disc is completely suspended on the connecting pin 26. When the connecting pin 26 directly drives the test hub 11 and the brake disc to rotate, since the diameter of the separation groove 51 is larger than the diameter of the brake disc, there is no external resistance to the rotation of the brake disc, thereby reducing the influence of external resistance on the braking effect of the brake disc and improving the authenticity of the detection effect.

[0066] As a preferred embodiment of the present invention, a feed trough 52 and a discharge trough 58 are respectively provided on both sides of the detection platform 1. The feed trough 52 is aligned with the installation slot 22, and the discharge trough 58 is aligned with the separation slot 51. The feed trough 52 is located on the side of the detection platform 1 away from the automatic testing component 12.

[0067] The feed chute 52 and the discharge chute 58 are staggered in width direction.

[0068] A feed rail 53 and a discharge rail 54 are respectively installed on both sides of the detection platform 1, and the feed rail 53 is arranged to be tilted upward away from the detection platform 1.

[0069] When the brake disc is loaded and the tested brake disc is replaced, the brake disc placed on the feed rail 53 has a tendency to move into the feed trough 52 under the action of gravity. When the replacement rack 2 rotates, since the tested brake disc is installed and aligned with the separation groove 51, the tested brake disc is aligned with the discharge trough 58 after the rotation is completed. Since the feed trough 52 and the discharge trough 58 are misaligned, the untested brake disc is misaligned with the tested brake disc. When the connecting pin 26 moves, the tested brake disc is separated from the test wheel hub 11 and is pulled out of the test wheel hub 11 under the action of gravity. The untested brake disc is used to push the tested brake disc to move, so that the tested brake disc is automatically discharged through the discharge chute 58 and the discharge rail 54, and the untested brake disc enters the installation groove 22. Since the feed chute 52 and the discharge chute 58 are misaligned in width direction, the untested brake disc is restricted by the test bench 1. Since the width of the installation groove 22 is the same as the width of the brake disc, the brake disc is coaxially aligned with the test wheel hub 11, thereby realizing automatic replacement of the brake disc and further enhancing the degree of automation of brake disc detection.

[0070] As a preferred embodiment of the present invention, compression bags 55 are fixedly installed on both sides of the movable frame 33, and filling sleeves 56 are fixedly installed on both ends of the connecting pin 26. The filling sleeves 56 are connected to the compression bags 55 through a catheter.

[0071] The maximum distance between the compression bag 55 and the retaining frame 32 is smaller than the moving distance of the connecting pin 26 and larger than the distance between the same pair of limiting rings 5 .

[0072] In order to further enhance the connection stability between the connecting pin 26 and the brake disc and the test wheel hub 11, when the structure composed of the connecting pin 26, the movable frame 33 and the nut 31 moves, the connecting pin 26 gradually inserts into the hole groove on the brake disc to be tested. When the movement distance of the connecting pin 26 is the same as the spacing between the same pair of limiting rings 5, the limiting rings 5 are in contact with the test wheel hub 11. Therefore, with the continuous movement of the connecting pin 26, the test wheel hub 11, the connecting pin 26 and the brake disc move synchronously until the brake disc is aligned with the separation groove 51. During this process, the movable frame 33 gradually approaches the retaining frame 32. Since the maximum spacing between the compression bag 55 and the retaining frame 32 is less than the movement distance of the connecting pin 26, the movable frame 33 The compression bag 55 on the upper part is squeezed, and the compression bag 55 transports the internal fluid to the filling sleeve 56 through the pipeline, causing the diameter of the filling sleeve 56 to increase, and then under the action of the filling sleeve 56, the connection stability between the connecting pin 26 and the brake disc is enhanced. When the inspection is completed and the replacement frame 2 is rotated, the connecting pin 26 is driven by the driving component to gradually move away from the brake disc. As the distance between the corresponding retaining frame 32 and the movable frame 33 increases, the compression bag 55 loses its restriction, causing the fluid in the filling sleeve 56 to flow back. It should be noted that the expansion of the filling sleeve 56 is only to fill the gap between the connecting pin 26 and the brake disc hole groove, so that the concentricity of the brake disc and the test wheel hub 11 and the positioning ring 25 is enhanced.

[0073] As a preferred embodiment of the present invention, an infrared receiving board 57 is fixedly mounted on the detection platform 1 , and infrared emitters are mounted on both ends of the connecting pin 26 .

[0074] When the gear ring 35 rotates, driving the brake disc to rotate, and then the brake disc is tested, as the brake disc test project is completely completed, under the control of the pre-set program, the infrared emitters at both ends of the connecting pin 26 are started. During the rotation of the connecting pin 26, when the hole groove on the brake disc newly installed in the mounting groove 22 is aligned with the connecting pin 26, the infrared light emitted by the infrared emitter passes through the hole groove of the brake disc and is projected onto the infrared receiving board 57. The control program controls the test motor 36 to stop. At this time, the detection of the current brake disc is completed. Therefore, when replacing the old brake disc with the new one, the detection of the infrared receiving board 57 and the infrared emitter can facilitate the alignment of the brake disc and the connecting pin 26. By coordinating the left and right movement of the connecting pin 26, the combination and disassembly of the brake disc and the test wheel hub 11 can be achieved.

[0075] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A new energy vehicle brake production testing device, comprising a testing platform (1), a test hub (11) and an automatic testing assembly (12), wherein the test hub (11) is rotatably mounted on the testing platform (1), the test hub (11) is used to mount a brake disc, and the automatic testing assembly (12) is used to perform a braking effect test on the brake disc; Its characteristics are: It also includes an automatic material changing assembly, which is installed on the test bench and is used to automatically change the brake disc on the test wheel hub (11); The automatic material changing assembly comprises: A replacement frame (2), wherein a rotation slot (21) is provided on the inspection platform (1), and a replacement frame (2) is rotatably installed in the rotation slot (21), wherein the replacement frame (2) is a circular frame-type structure, and a mounting slot (22) is provided on the replacement frame (2), and the height and width of the mounting slot (22) are the same as the diameter of the brake disc; A driving roller (23) is rotatably mounted in the rotating groove (21), the driving roller (23) is frictionally driven with the replacement frame (2), and the driving roller (23) is externally connected to a driving motor (24); A positioning ring (25), wherein a symmetrically designed positioning ring (25) is fixedly installed inside the replacement frame (2), and a test hub (11) is rotatably mounted on each positioning ring (25); A connecting pin (26) is installed between the two positioning rings (25), a connecting hole (27) is opened on the test hub (11), the connecting hole (27) is aligned with the connecting pin (26), and the connecting pin (26) is used to connect the brake disc and the test hub (11); A driving assembly is installed on the positioning ring (25) and is used to drive the connecting pin (26) to alternately engage with the brake discs on both sides.

2. A new energy vehicle brake production testing device according to claim 1, characterized in that: The drive assembly includes: Screws (3) and nuts (31), evenly distributed screws (3) are installed between the two positioning rings (25), nuts (31) are fixedly installed in the middle of the connecting pins (26), the nuts (31) are sleeved on the screws (3), and the nuts (31) and the screws (3) are spirally driven; A retaining frame (32) and a movable frame (33), wherein the retaining frame (32) is commonly installed on both ends of the screw rod (3), and the movable frame (33) is commonly fixedly installed on the nut (31); Gears (34) and gear rings (35), both ends of the screw (3) are fixedly mounted with gears (34), a plurality of the gears (34) are sleeved with gear rings (35) on their exteriors, the gear rings (35) are rotatably mounted on the positioning ring (25), and the gear rings (35) are provided with tooth grooves on both the inner and outer sides; A test motor (36) and a transmission wheel (37) are installed on the detection platform (1), and the test motor (36), the transmission wheel (37) and the gear ring (35) are sequentially connected in transmission.

3. A new energy vehicle brake production testing device according to claim 2, characterized in that: The testing platform (1) is provided with a telescopic slot (4), a telescopic block (41) is elastically installed in the telescopic slot (4) by a spring, the telescopic block (41) extends to the gap of the positioning ring (25), the transmission wheel (37) is rotatably installed on the telescopic block (41), the output end of the test motor (36) extends into the telescopic slot (4), and the output end of the test motor (36) is connected to the transmission wheel (37) through a belt transmission.

4. A new energy vehicle brake production testing device according to claim 3, characterized in that: A pair of limiting rings (5) are fixedly mounted at both ends of the connecting pin (26), and the two test hubs (11) are respectively located in the gaps of the limiting rings (5), and the movement distance of the connecting pin (26) is greater than the spacing between the same pair of limiting rings (5). A separation groove (51) is provided on the replacement frame (2) and the test table (1), and the separation groove (51) is conductively connected to the installation groove (22). The diameter of the separation groove (51) is greater than the diameter of the brake disc.

5. The new energy vehicle brake production testing device according to claim 4, characterized in that: A feed trough (52) and a discharge trough (58) are respectively provided on both sides of the testing platform (1); the feed trough (52) is aligned with the mounting trough (22); the discharge trough (58) is aligned with the separation trough (51); and the feed trough (52) is located on a side of the testing platform (1) away from the automatic test component (12).

6. A new energy vehicle brake production testing device according to claim 5, characterized in that: The feed trough (52) and the discharge trough (58) are staggered in width direction.

7. A new energy vehicle brake production testing device according to claim 6, characterized in that: A feed rail (53) and a discharge rail (54) are respectively installed on both sides of the detection platform (1), and the feed rail (53) is arranged to be tilted upward on the side away from the detection platform (1).

8. The new energy vehicle brake production testing device according to claim 7, characterized in that: Compression bags (55) are fixedly mounted on both sides of the movable frame (33), and filling sleeves (56) are fixedly mounted on both ends of the connecting pin (26), and the filling sleeves (56) are conductively connected to the compression bags (55) via a conduit.

9. The new energy vehicle brake production testing device according to claim 8, characterized in that: The maximum distance between the compression bag (55) and the retaining frame (32) is smaller than the moving distance of the connecting pin (26) and larger than the distance between the same pair of limiting rings (5).

10. The new energy vehicle brake production testing device according to claim 9, characterized in that: An infrared receiving board (57) is fixedly mounted on the detection platform (1), and infrared emitters are mounted on both ends of the connecting pin (26).

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