A brake disc dynamic flatness detection device

Abstract

The present invention provides a brake disc dynamic flatness detection device, which belongs to the field of brake disc detection technology, and comprises a placement frame arranged on a base plate, on which a detection frame and a micrometer are arranged; the detection frame is provided with a clamping mechanism, which includes a clamping assembly, a centering assembly and a driving source; the present invention can accurately position the brake disc at the center of the detection equipment, thereby reducing the detection data error caused by positioning problems and improving the reliability and effectiveness of the detection results. By rotating the detection frame to complete the switching of the workstation, there is no need to suspend the operation of the equipment after the detection is completed, which reduces the downtime caused by the operator loading and unloading materials and improves the detection efficiency. By setting the locking rod and the locking shaft, the centering operation is performed after the workstation switching is completed, thereby avoiding the reduction of detection accuracy caused by the treatment of the outer surface of the brake disc and the influence of the centering effect on the workstation switching.

Description

Technical Field

[0001] The present invention relates to the technical field of brake disc detection, and in particular to a brake disc dynamic flatness detection device. Background Art

[0002] In a car's braking system, brake discs play a vital role, and their dynamic flatness accuracy is one of the key indicators for measuring the quality of brake discs. The dynamic flatness of the brake disc is directly related to the stability, comfort, and braking performance of the vehicle during braking. When there is a deviation in the dynamic flatness of the brake disc, the contact pressure between the brake disc and the brake pad is unevenly distributed during the braking process, which can easily cause brake judder and seriously affect the driving experience. More importantly, this uneven pressure distribution will also lead to longer braking distances, greatly increasing the safety risks during driving, especially in high-speed driving or emergency braking, which may cause serious traffic accidents.

[0003] Referring to a Chinese patent document with publication number CN220583300U, dated March 12, 2024, entitled "A Testing Device for Automobile Brake Disc Production," the patent describes a method of placing a brake disc on a clamping assembly, pushing first and second sliders to lift the first and second connecting rods upward, thereby expanding the clamping plate upward until the anti-sliding block on the clamping plate contacts the inner wall of the brake disc. Cylinders on both sides of the brake disc are then activated to bring the dial indicator into contact with the disc, which is then rotated to begin testing the dynamic flatness of the disc.

[0004] Referring to the above technical solution, the patent document achieves the clamping of the brake disc by expanding the inner hole of the brake disc through the clamping component, and then drives the corresponding micrometer to contact the brake disc through the cylinders set on both sides of the brake disc. This results in the brake disc being unable to be accurately positioned in the center of the testing equipment during the actual testing process, resulting in large errors in the measurement data generated during the testing process, which cannot truly and accurately reflect the actual dynamic flatness of the brake disc, seriously affecting the reliability and effectiveness of the test results, and thus misleading the quality judgment of the brake disc and subsequent production improvements. In addition, the patent document adopts a single-station design in the loading and unloading links. After each test is completed, the equipment needs to be paused to wait for the operator to perform manual loading and unloading operations. This operation method consumes a lot of time, reduces the detection efficiency, and cannot meet the needs of large-scale automobile production lines for fast and efficient testing of brake discs. Summary of the Invention

[0005] In view of this, the present invention provides a brake disc dynamic flatness detection device, which can clamp brake discs of different specifications while accurately positioning the brake disc at the center of the detection equipment, thereby reducing the detection accuracy error caused by clamping and positioning.

[0006] In order to solve the above technical problems, the present invention provides a brake disc dynamic flatness detection device, comprising a placement frame arranged on a base plate, the placement frame being provided with a detection frame and a micrometer; the detection frame is provided with a clamping mechanism, the clamping mechanism including a clamping assembly, a centering assembly and a driving source; the clamping assembly includes a first piston cylinder rotatably connected to the detection frame, the first piston cylinder is symmetrically provided with a second piston cylinder connected to the first piston cylinder along the radial direction, and the second piston cylinder is slidably connected to a hollow inner support plate; the inner support plate is provided with a centering piston cylinder along the transverse direction, and two centering piston rods are slidably connected in the centering piston cylinder, each centering piston rod is provided with a clamping plate, and a centering rod is provided on the clamping plate; the inner cavity of the inner support plate is connected to the second piston cylinder.

[0007] By adopting the above technical solution, the two inner support plates are driven by a driving source to move in opposite directions, which can tighten the inner rings of brake discs of different specifications. This meets the needs of the brake disc dynamic flatness detection equipment to detect brake discs of different specifications, ensuring that there is no eccentricity during high-speed rotation detection, avoiding detection errors caused by eccentricity, and accurately measuring the flatness of the brake disc, providing reliable data for product quality assessment. By setting up a centering component, the brake disc can be accurately positioned according to its specific specifications, ensuring that its rotation center strictly coincides with the axis of the detection equipment, reducing detection data errors caused by positioning problems, improving the reliability and effectiveness of the test results, and avoiding errors in the measurement data generated during the detection process.

[0008] Optionally, a hollow locking shaft is coaxially arranged between the first piston cylinder and the detection frame, the locking shaft is fixedly connected to the first piston cylinder, and the locking shaft is rotatably connected to the detection frame; locking cylinders are provided at corresponding positions at both ends of the detection frame, a locking rod is provided on the telescopic shaft of the locking cylinder, and a locking hole is provided on the peripheral wall of the locking shaft.

[0009] Optionally, a first piston rod is slidably connected in the first piston cylinder, and the first piston rod is provided with a first inclined surface; a second piston rod is provided on the inner support plate, and the second piston rod is provided with a second inclined surface.

[0010] By adopting the above technical solution, through the design of the locking hole and the locking rod, the locking rod locks the locking shaft and the airway, making the brake disc unable to rotate when loading, thereby facilitating the operator to clean the brake disc surface. At the same time, the locking of the airway makes the clamping process more stable, preventing the clamping from loosening due to external factors after clamping is completed, thereby improving the clamping accuracy. By setting the first and second inclined surfaces, the lateral horizontal movement of the first piston is converted into the vertical horizontal movement of the two inner support plates in opposite directions, and the feed amount of the two inner support plates moving in opposite directions is made the same, making the clamping process more stable and improving the clamping accuracy.

[0011] Optionally, a sliding groove is provided on the end face of the first piston rod, and a sliding block is slidably connected in the sliding groove; the side of the sliding block located in the lock is a third inclined surface, and the sliding rod is provided with an air duct connecting the inner cavity of the locking shaft and the inner cavity of the first piston cylinder, and the air duct outlet is located on the side wall of the sliding block.

[0012] By adopting the above technical solution, the brake disc clamping and centering processes are performed in separate steps. This allows the operator to clean impurities from the brake disc surface after the brake disc is stabilized. After cleaning, the brake disc can be aligned. This prevents impurities from affecting the contact between the testing instrument and the brake disc surface, allowing the testing instrument to more accurately obtain brake disc surface data and improve testing accuracy. Furthermore, performing the alignment operation after surface cleaning avoids the reduction in centering accuracy caused by cleaning the brake disc surface, resulting in a higher degree of concentricity between the brake disc axis and the testing equipment reference point, further improving testing accuracy and enabling the test results to more accurately reflect the dynamic flatness of the brake disc.

[0013] Optionally, the sliding block is located on one side of the first piston cylinder and is connected to the side wall of the first piston rod through a second compression spring. The second compression spring in the initial state drives the sliding block to reset. The sliding block in the reset state prevents the airway outlet from being blocked by the side wall of the sliding groove; a fourth inclined surface is provided on the locking rod.

[0014] By adopting the above technical solution, when the surface of the brake disc is cleaned, the third inclined surface is driven by the fourth inclined surface of the locking rod to drive the sliding block to move, so that the air channel is blocked by the side wall of the sliding groove, and the second compression spring is compressed at the same time, so that the high-pressure gas in the inner cavity of the locking shaft cannot enter the first piston cylinder, and the equipment cannot perform the centering operation on the brake disc; when the locking rod is pulled out of the locking shaft, the fourth inclined surface no longer abuts the third inclined surface, and the reset second compression spring drives the sliding block to reset, and the air channel entrance of the sliding block is no longer blocked by the side wall of the sliding groove. The high-pressure gas in the inner cavity of the locking shaft enters the first piston cylinder through the air channel and then enters the centering piston cylinder through the second piston cylinder, driving the two centering rods to move back to back, and the two centering rods respectively contact the corresponding inner walls of the brake disc, and drive the corresponding inner walls of the brake disc to expand outward at the same time under the drive of the high-pressure gas, thereby achieving the effect of centering the brake disc.

[0015] Optionally, a first rotating shaft is provided on a side wall of the detection frame; the detection frame is rotatably connected to the placement frame via the first rotating shaft; and clamping mechanisms are provided at both ends of the detection frame.

[0016] By adopting the above technical solution, through the rotation connection between the detection frame and the placement frame, and the clamping mechanisms arranged at both ends of the detection frame, the loading and unloading operations of the brake disc are completed at one end, and the brake disc is inspected at the other end; when the inspection of the brake disc is completed, the detection frame is directly rotated, and the brake disc to be inspected is rotated to one end of the micrometer to perform dynamic flatness inspection on the brake disc; at the same time, the brake disc rotated to the loading end is removed, and then the brake disc to be inspected is placed in the corresponding position; the double-station design eliminates the need to suspend the equipment after the inspection is completed, reducing the downtime caused by the operator loading and unloading, and improving the inspection efficiency.

[0017] Optionally, a first motor is provided on the placement rack, and a driving gear is provided on the output shaft of the first motor; and a transmission gear meshing with the driving gear is provided on the first rotating shaft sleeve.

[0018] Optionally, the end surface of the locking rod is slidably connected to a spring rod, and the end surface of the spring rod is a dome.

[0019] Optionally, the centering piston rod is a hollow structure; the clamping plate is provided with a through slot, which is connected to the centering piston cylinder through the hollow centering piston rod; the centering rod is slidably connected to the through slot, and a first tension spring is provided between the bottom of the centering rod and the centering piston cylinder, and the tension spring in the initial state drives the centering rod to be retracted into the through slot.

[0020] Optionally, a first bracket is provided on the bottom plate, a first cylinder is provided on the first bracket, a rotating motor is provided on the telescopic shaft of the first cylinder, and a driving roller is provided on the output of the rotating motor.

[0021] By adopting the above technical solution and the retractable design of the centering rod, the centering rod is not driven out of the slot by the high-pressure gas during the loading and unloading process, but is retracted into the slot under the action of the first tension spring, thereby avoiding inconvenience caused by the centering rod to the loading and unloading of the brake disc. By setting the first cylinder and the drive roller, when inspection is required, the first cylinder drives the peripheral wall of the drive roller to contact the peripheral wall of the brake disc, and the motor drives the drive roller to rotate, thereby driving the brake disc to rotate, so that the micrometer contacts different positions of the brake disc, thereby facilitating inspection; when the inspection is completed, the speed of the drive roller gradually slows down, and the friction between the peripheral wall of the drive roller and the peripheral wall of the brake disc is used to reduce the speed of the brake disc; when the brake disc is completely stationary, the first cylinder drives the drive roller away from the brake disc, thereby avoiding interference of the drive roller with the workstation switching.

[0022] In summary, compared with the prior art, the present invention has at least one of the following beneficial technical effects:

[0023] 1. By providing a set of inner support plates that can simultaneously move in opposite directions, the present invention can tighten the inner rings of brake discs of different specifications, thereby meeting the need for dynamic flatness testing equipment to test brake discs of different specifications. This ensures that the brake disc does not eccentrically rotate during high-speed testing, avoiding testing errors caused by eccentricity, thereby accurately measuring the flatness of the brake disc and providing reliable data for product quality assessment. By providing a centering component to center the brake disc, the brake disc can be precisely positioned at the center of the testing equipment, reducing test data errors caused by positioning issues and improving the reliability and effectiveness of the test results.

[0024] 2. The present invention provides a rotatable detection frame, and independent clamping mechanisms are respectively provided at both ends of the detection frame. The clamping mechanism at one end performs loading operations, and the clamping mechanism at the other end performs detection operations. After the detection at one end is completed, the work station is switched by rotating the detection frame. There is no need to suspend the operation of the equipment after the detection is completed, which reduces the downtime caused by the operator loading and unloading, and improves the detection efficiency.

[0025] 3. The present invention separates the clamping operation of the brake disc from the centering operation by providing a locking shaft and a locking rod; after the clamping operation is completed, the locking rod locks the rotation of the locking shaft and the air passage, which is convenient for the operator to process the outer surface of the brake disc; after the work station switching is completed, the locking rod releases the lock on the locking shaft and the air passage, and the high-pressure gas enters the first piston cylinder through the air passage through the inner cavity of the locking shaft and then enters the centering piston cylinder through the second piston cylinder, driving the two centering rods to move back to back, and the two centering rods respectively contact the corresponding inner walls of the brake disc and drive the corresponding inner walls of the brake disc to expand outward at the same time under the drive of the high-pressure gas, thereby achieving the effect of centering the brake disc; avoiding the reduction of detection accuracy caused by the treatment of the outer surface of the brake disc and the influence of work station switching on the centering effect after the centering operation, making the concentricity of the axis of the brake disc and the reference point of the detection equipment higher, so that the detection result can more truly reflect the dynamic flatness of the brake disc. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic structural diagram of a brake disc dynamic flatness detection device according to the present invention;

[0027] Figure 2 It is a rear view of the overall structure of the present invention;

[0028] Figure 3 Schematic diagram of the cross-sectional structure of the first piston cylinder of the present invention;

[0029] Figure 4 for Figure 3 The enlarged structural diagram of the middle part A;

[0030] Figure 5Schematic diagram of the top view of the sliding block of the present invention;

[0031] Figure 6 for Figure 5 Schematic diagram of the cross-sectional structure in the B direction;

[0032] Figure 7 A top view of a portion of the structure of the present invention;

[0033] Figure 8 Schematic diagram of the cooperation relationship between the locking rod and the sliding block of the present invention;

[0034] Figure 9 It is a schematic structural diagram of the first piston cylinder as a whole of the present invention.

[0035] Explanation of Reference Numerals: 1. Base plate; 11. Placement rack; 12. Dial indicator; 13. First bracket; 14. First cylinder; 15. Rotating motor; 16. Driving roller; 2. Detection rack; 21. First rotating shaft; 22. First motor; 23. Driving gear; 24. Transmission gear; 3. Clamping assembly; 31. First piston cylinder; 32. Second piston cylinder; 33. Inner support plate; 34. First piston rod; 35. First inclined surface; 36. Second piston rod; 37. Second inclined surface; 4. Centering assembly; 41. Centering piston cylinder; 42. Centering piston rod; 43. Clamping plate; 44. Centering rod; 45. Through groove; 46. First tension spring; 5. Locking shaft; 51. Locking cylinder; 52. Locking rod; 53. Locking hole; 54. Spring rod; 6. Sliding block; 61. Third inclined surface; 62. Air duct; 63. Second compression spring; 64. Fourth inclined surface. DETAILED DESCRIPTION

[0036] Reference Figures 1 to 9 , this embodiment provides a brake disc dynamic flatness detection device, including a placement frame 11 arranged on a base plate 1, on which a detection frame 2 and a dial indicator 12 are arranged; a clamping mechanism is provided on the detection frame 2, and the clamping mechanism includes a clamping assembly 3, a centering assembly 4 and a driving source; the clamping assembly 3 includes a first piston cylinder 31 rotatably connected to the detection frame 2, the first piston cylinder 31 is symmetrically provided with a second piston cylinder 32 connected to the first piston cylinder 31 along the radial direction, and the second piston cylinder 32 is slidably connected to a hollow inner support plate 33; the centering assembly 4 includes a centering piston cylinder 41 arranged in a transverse direction on the inner support plate 33, and two centering piston rods 42 are slidably connected in the centering piston cylinder 41, each centering piston rod 42 is provided with a clamping plate 43, and a centering rod 44 is provided on the clamping plate 43; the inner cavity of the inner support plate 33 is connected to the second piston cylinder 32;

[0037] In this embodiment, when it is necessary to perform dynamic flatness testing on the brake disc, the inner ring of the brake disc to be tested is first placed on the inner support plate 33, and high-pressure gas is input into the first piston cylinder 31 through the driving source. The high-pressure gas enters the second piston cylinder 32 through the first piston cylinder 31 and pushes the two inner support plates 33 to move away from each other, so that the clamping plates 43 on the two inner support plates 33 gradually adhere to the inner ring of the brake disc, thereby achieving the clamping of brake discs of different specifications.

[0038] To prevent the centering rod 44 from interfering with the placement and removal of the brake disc, the centering piston rod 42 is hollow in the present invention. The clamping plate 43 is provided with a through slot 45, which is connected to the centering piston cylinder 41 through the hollow centering piston rod 42. The centering rod 44 is slidably connected to the through slot 45. A first tension spring 46 is provided between the bottom of the centering rod 44 and the centering piston cylinder 41. In the initial state, the tension spring drives the centering rod 44 to be accommodated in the through slot 45.

[0039] In this embodiment, when no high-pressure gas is passed into the centering piston cylinder 41, the first tension spring 46 drives the centering rod 44 to be retracted into the through groove 45. At this time, the centering rod 44 will not interfere with the removal and placement of the brake disc; when high-pressure gas is passed into the centering piston cylinder 41, the high-pressure gas drives the centering rod 44 to slide to the outside of the through groove 45.

[0040] In order to further improve the stability of clamping, in the present invention, a first piston rod 34 is slidably connected in the first piston cylinder 31, and the first piston rod 34 is provided with a first inclined surface 35; a second piston rod 36 is provided on the inner support plate 33, and the second piston rod 36 is provided with a second inclined surface 37;

[0041] In this embodiment, through the setting of the first piston rod 34, the high-pressure gas can directly push the first piston rod 34 to move. The first piston rod 34 converts the horizontal movement of the first piston rod 34 into the vertical movement of the second piston rod 36 through the first inclined surface 35. Compared with the high-pressure gas pushing the second piston rod 36 to move, this method makes the clamping tighter.

[0042] In order to improve the detection efficiency in the loading and unloading process, in the present invention, a first rotating shaft 21 is provided on the side wall of the detection frame 2; the detection frame 2 is rotatably connected to the placement frame 11 through the first rotating shaft 21; a first motor 22 is provided on the placement frame 11, and the output shaft of the first motor 22 is provided with a driving gear 23; the first rotating shaft 21 is sleeved with a transmission gear 24 that meshes with the driving gear 23; and a clamping mechanism is provided at both ends of the detection frame 2;

[0043] In this embodiment, the side of the detection frame 2 close to the micrometer 12 is the detection end, and the other side of the detection frame 2 is the loading end. Through the first rotating shaft 21, the first motor 22 and the clamping mechanism set at both ends of the detection frame 2, when the clamping mechanism at the detection end clamps the brake disc for inspection, the first motor 22 drives the detection frame 2 to rotate, so that the detection frame 2 drives the brake disc to be inspected to rotate to the corresponding position, and then the dynamic flatness detection of the brake disc is performed.

[0044] In the present invention, a hollow locking shaft 5 is coaxially arranged between the first piston cylinder 31 and the detection frame 2. One end face of the locking shaft 5 is fixedly connected to the first piston cylinder 31, and the other end face of the locking shaft 5 is rotatably connected to the detection frame 2. Locking cylinders 51 are provided at corresponding positions at both ends of the detection frame 2. A locking rod 52 is provided on the telescopic shaft of the locking cylinder 51, and a locking hole 53 is provided on the peripheral wall of the locking shaft 5.

[0045] In this embodiment, by setting the locking shaft 5 and the locking hole 53, after the dynamic flatness test of the brake disc is completed, the locking cylinder 51 drives the locking rod 52 to be inserted into the locking hole 53, thereby locking the locking shaft 5, thereby preventing the first piston cylinder 31 from rotating, and quickly bringing the tested brake disc to a stationary state, making it easier for the operator to quickly remove the tested brake disc;

[0046] At the same time, the locking of the locking shaft 5 can also prevent the brake disc from rotating at the loading end, making it easier for the operator to process the surface of the brake disc at the loading end; when the surface treatment of the brake disc is completed, the brake disc is driven to rotate to the detection end through the detection frame 2, and the locking cylinder 51 drives the locking rod 52 to be pulled out of the locking hole 53 to complete the unlocking of the locking shaft 5.

[0047] In order to facilitate the locking of the locking shaft 5 by the locking rod 52, in the present invention, the end surface of the locking rod 52 is slidably connected to a spring rod 54, and the end surface of the spring rod 54 is a dome;

[0048] In this embodiment, by setting a spring rod 54 with a dome end face, when the brake disc is detected and the rotation speed of the brake disc decreases, the locking cylinder 51 drives the locking rod 52 to move toward the locking hole 53, so that the spring rod 54 drives its own dome surface to always be in close contact with the peripheral wall of the locking shaft 5. When the dome surface fits with the locking hole 53, the spring rod 54 drives itself to be inserted into the locking shaft 5, thereby completing the locking of the locking shaft 5.

[0049] In this embodiment, in order to make the inner support plate 33 parallel to the base plate 1 in a static state to improve the centering effect of the centering component 4, in the present invention, the detection frame 2 in the loading state is parallel to the base plate 1, and the locking rod 52 of the locking cylinder 51 is extended and retracted in a direction parallel to the base plate 1.

[0050] In order to enhance the clamping and centering effect of the brake disc, in the present invention, a sliding groove is provided on the end surface of the first piston rod 34, in which a sliding block 6 is slidably connected; one side of the sliding block 6 located in the locking shaft 5 is a third inclined surface 61, and the sliding block 6 is provided with an air passage 62 connecting the inner cavity of the locking shaft 5 and the inner cavity of the first piston cylinder 31, and the outlet of the air passage 62 is located on the side wall of the sliding block 6; the sliding block 6 is located on one side of the first piston cylinder 31 and is connected to the side wall of the first piston rod 34 through a second compression spring 63. In the initial state, the second compression spring 63 drives the sliding block 6 to reset, and the sliding block 6 in the reset state ensures that the outlet of the air passage 62 is not blocked by the side wall of the sliding groove; a fourth inclined surface 64 is provided on the locking rod 52;

[0051] In this embodiment, by providing the sliding block 6 , the brake disc can be clamped first and then aligned, so as to improve the accuracy of alignment.

[0052] In order to make the brake disc more stable during rotation, in the present invention, a first bracket 13 is provided on the base plate 1, a first cylinder 14 is provided on the first bracket 13, a rotating motor 15 is provided on the telescopic shaft of the first cylinder 14, and a driving roller 16 is provided on the output of the rotating motor 15;

[0053] In this embodiment, through the arrangement of the first cylinder 14 and the drive roller 16, when it is necessary to perform dynamic flatness detection on the brake disc, the first cylinder 14 drives the peripheral wall of the drive roller 16 to contact the peripheral wall of the brake disc, and the rotating motor 15 drives the drive roller 16 to rotate, thereby driving the brake disc to rotate, so that the micrometer 12 contacts different positions of the brake disc, thereby facilitating detection; when the detection is completed, the rotation speed of the drive roller 16 gradually slows down, and the friction between the peripheral wall of the drive roller 16 and the peripheral wall of the brake disc is used to reduce the rotation speed of the brake disc; when the brake disc is completely stationary, the first cylinder 14 drives the drive roller 16 away from the brake disc to avoid the drive roller 16 interfering with the work station switching.

[0054] The implementation principle of a brake disc dynamic flatness detection device according to an embodiment of the present invention is as follows:

[0055] When the dynamic flatness test of the brake disc is required, the first cylinder 14 drives the peripheral wall of the driving roller 16 to contact the peripheral wall of the brake disc, and the rotating motor 15 drives the driving roller 16 to rotate, thereby driving the brake disc to rotate, so that the dial indicator 12 contacts different positions of the brake disc, thereby facilitating the test; when the test is completed, the speed of the driving roller 16 gradually slows down, and the friction between the peripheral wall of the driving roller 16 and the peripheral wall of the brake disc is used to reduce the speed of the brake disc;

[0056] The locking cylinder 51 drives the locking rod 52 to move toward the locking hole 53, so that the dome surface of the spring rod 54 contacts the peripheral wall of the locking shaft 5. As the brake disc rotates slower under the action of the driving roller 16, when the dome surface faces the locking hole 53, the spring rod 54 drives itself to insert into the locking shaft 5, completing the locking of the locking shaft 5.

[0057] When the locking shaft 5 stops rotating, the driving source stops pumping high-pressure gas into the first piston cylinder 31 and starts to extract air from the first piston cylinder 31. The inner cavities of the first piston cylinder 31, the second piston cylinder 32, the first sleeve and the centering piston cylinder 41 change from positive pressure to negative pressure. The first tension spring 46 drives the centering rod 44 to be stored in the through groove 45. At this time, the centering rod 44 will not interfere with the removal and placement of the brake disc. Each set of inner support plates 33 and clamping plates 43 begin to move toward each other, releasing the centering clamping of the brake disc.

[0058] At the same time, the spring rod 54 drives its own dome surface to always be in close contact with the peripheral wall of the locking shaft 5. When the dome surface fits into the locking hole 53, the spring rod 54 drives itself to be inserted into the locking shaft 5, completing the locking of the locking shaft 5.

[0059] At this time, the locking rod 52 drives the fourth inclined surface 64 to drive the third inclined surface 61 to drive the sliding block 6 to move, so that the outlet of the air channel 62 is blocked by the side wall of the sliding groove, and at the same time, the second compression spring 63 is compressed;

[0060] The operator places the brake disc on the clamping assembly 3 at the feeding end and inputs high-pressure gas into the first piston cylinder 31 through the driving source. The high-pressure gas directly pushes the first piston rod 34 to move. The first piston rod 34 converts the horizontal movement of the first piston rod 34 into the vertical movement of the second piston rod 36 through the first inclined surface 35, so that the clamping plates 43 on the two inner support plates 33 gradually adhere to the inner ring of the brake disc, thereby achieving the clamping of brake discs of different specifications.

[0061] Since the locking rod 52 has locked the locking shaft 5 at this time, the operator can clean the dust, oil, iron filings and other impurities attached to the surface of the brake disc;

[0062] After cleaning is completed, the first motor 22 drives the detection frame 2 to rotate, so that the detection frame 2 drives the brake disc to be detected to rotate to the detection end, and rotates the brake disc that has been detected to the loading end;

[0063] The locking cylinder 51 drives the locking rod 52 out of the locking hole 53. The third inclined surface 61 no longer contacts the fourth inclined surface 64. The second compression spring 63 drives the sliding block 6 to reset. In the reset state, the sliding block 6 clears the entrance of the air passage 62 from being blocked by the side wall of the sliding groove. The high-pressure gas enters the first piston cylinder 31 through the air passage 62 and enters the centering piston cylinder 41 through the second piston cylinder 32, simultaneously pushing the two centering piston rods 42 to move away from each other.

[0064] The two centering piston rods 42 moving in opposite directions are in close contact with the inner wall of the brake disc through the centering rod 44. Under the continuous supply of high-pressure gas, the two centering piston rods 42 continue to move in opposite directions, ultimately achieving the centering of brake discs of different specifications.

[0065] The first cylinder 14 drives the telescopic shaft of the first cylinder 14 to drive the rotating motor 15 to approach the brake disc at the detection end, so that the peripheral wall of the driving roller 16 is in contact with the peripheral wall of the brake disc. The rotating motor 15 drives the driving roller 16 to drive the brake disc to rotate, and the micrometers 12 on both sides move to the corresponding positions to start detecting the dynamic flatness of the brake disc.

Claims

1. A brake disc dynamic flatness detection device, comprising: A placement rack is provided on the bottom plate, and a detection rack and a dial indicator are provided on the placement rack; The feature is that a clamping mechanism is provided on the detection frame, and the clamping mechanism includes a clamping component, a centering component and a driving source; The clamping assembly includes a first piston cylinder rotatably connected to the detection frame, the first piston cylinder is symmetrically provided with a second piston cylinder connected to the first piston cylinder along the radial direction, and the second piston cylinder is slidably connected to a hollow inner support plate; the inner support plate is provided with a centering piston cylinder along the transverse direction, and two centering piston rods are slidably connected in the centering piston cylinder, each centering piston rod is provided with a clamping plate, and the clamping plate is provided with a centering rod; the inner cavity of the inner support plate is connected to the second piston cylinder; A hollow locking shaft is coaxially arranged between the first piston cylinder and the detection frame. The locking shaft is fixedly connected to the first piston cylinder and rotatably connected to the detection frame. Locking cylinders are provided at corresponding positions at both ends of the detection frame. A locking rod is provided on the telescopic shaft of the locking cylinder, and a locking hole is provided on the peripheral wall of the locking shaft. A first piston rod is slidably connected in the first piston cylinder, and the first piston rod is provided with a first inclined surface; a second piston rod is provided on the inner support plate, and the second piston rod is provided with a second inclined surface; The end surface of the first piston rod is provided with a sliding groove, in which a sliding block is slidably connected; a side of the sliding block located in the locking shaft is a third inclined surface, and the sliding rod is provided with an air passage connecting the inner cavity of the locking shaft and the inner cavity of the first piston cylinder, and the air passage outlet is located on the side wall of the sliding block; The sliding block is located on one side of the first piston cylinder and is connected to the side wall of the first piston rod through a second compression spring. In the initial state, the second compression spring drives the sliding block to reset. In the reset state, the sliding block prevents the airway outlet from being blocked by the side wall of the sliding groove; a fourth inclined surface is provided on the locking rod.

2. A brake disc dynamic flatness detection device according to claim 1, characterized in that: A first rotating shaft is provided on the side wall of the detection frame; the detection frame is rotatably connected to the placement frame via the first rotating shaft; and clamping mechanisms are provided at both ends of the detection frame.

3. The brake disc dynamic flatness detection device according to claim 1, characterized in that: The placement rack is provided with a first motor, an output shaft of the first motor is provided with a driving gear; and the first rotating shaft sleeve is provided with a transmission gear meshing with the driving gear.

4. The brake disc dynamic flatness detection device according to claim 1, characterized in that: The end surface of the locking rod is slidably connected to a spring rod, and the end surface of the spring rod is a dome.

5. The brake disc dynamic flatness detection device according to claim 1, characterized in that: The centering piston rod is a hollow structure; the clamping plate is provided with a through slot, which is connected to the centering piston cylinder through the hollow centering piston rod; the centering rod is slidably connected to the through slot, and a first tension spring is provided between the bottom of the centering rod and the centering piston cylinder. The tension spring in the initial state drives the centering rod to be retracted into the through slot.

6. The brake disc dynamic flatness detection device according to claim 1, characterized in that: The bottom plate is provided with a first bracket, the first bracket is provided with a first cylinder, the telescopic shaft of the first cylinder is provided with a rotating motor, and the output of the rotating motor is provided with a driving roller.

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