Search

CN-121994471-A - Automobile brake disc friction and wear performance detection device

CN121994471ACN 121994471 ACN121994471 ACN 121994471ACN-121994471-A

Abstract

The application relates to a friction and wear performance detection device for an automobile brake disc, which relates to the technical field of brake disc testing and comprises a workbench, a fixing assembly, a driving assembly and a clamping assembly, wherein the fixing assembly comprises a first fixing ring and a second fixing ring, the brake disc to be tested is fixedly connected between the first fixing ring and the second fixing ring, the first fixing ring is rotationally connected with the workbench along the axis of the first fixing ring, the second fixing ring is slidingly connected with a bracket along the axis of the second fixing ring, a sliding seat and the second fixing ring synchronously move, the driving assembly drives the first fixing ring to rotate, the clamping assembly is used for clamping the brake disc to be tested in rotation to stop rotation, and the distance between one ends of the first fixing ring and one end of the first brake pad, which are respectively abutted against the brake disc to be tested, is equal to the distance between one ends of the second fixing ring and one end of the second brake pad, which are respectively abutted against the brake disc to be tested. The application has the effect of improving the detection precision.

Inventors

  • ZHAO ZHENYU
  • WANG HAITAO
  • LIU CHUNLIN

Assignees

  • 山东宏源机械铸造有限公司

Dates

Publication Date
20260508
Application Date
20260312

Claims (10)

  1. 1. The utility model provides an automobile brake disc frictional wear performance detection device which characterized in that includes: The workbench (1), the upper end face of the workbench (1) is fixedly provided with a bracket (11), and the bracket (11) is connected with a sliding seat (12) in a sliding manner; The fixed assembly (2) comprises a first fixed ring (21) and a second fixed ring (22), the brake disc to be tested is fixedly connected between the first fixed ring (21) and the second fixed ring (22), the first fixed ring (21) is rotationally connected with the workbench (1) along the axis of the first fixed ring, the second fixed ring (22) is slidably connected with the bracket (11) along the axis of the second fixed ring, and the sliding seat (12) and the second fixed ring (22) synchronously move; The driving assembly (3) comprises a rotating motor (31), a driving wheel (32) and a driven wheel (33), the rotating motor (31) is fixedly connected with the workbench (1), the output end of the rotating motor (31) is coaxially and fixedly connected with the driving wheel (32), the driving wheel (32) is meshed with the driven wheel (33), and the driven wheel (33) and the first fixed ring (21) coaxially and synchronously rotate; The clamping assembly (4) comprises a first brake pad (41), a second brake pad (42), a first screw rod (43), a second screw rod (44) and a clamping driving piece (45), wherein the first brake pad (41) is in threaded connection with the first screw rod (43), the second brake pad (42) is in threaded connection with the second screw rod (44), the first screw rod (43) is in rotary connection with the bracket (11), the second screw rod (44) is in rotary connection with the sliding seat (12), the first screw rod (43) is in coaxial sliding connection with the second screw rod (44), and the clamping driving piece (45) is used for driving the first screw rod (43) and the second screw rod (44) to synchronously rotate; The distance between the first fixed ring (21) and one end of the first brake pad (41) which are respectively abutted with the brake disc to be tested is equal to the distance between the second fixed ring (22) and one end of the second brake pad (42) which are respectively abutted with the brake disc to be tested.
  2. 2. The device for detecting the friction and wear performance of the automobile brake disc according to claim 1, wherein the axial length of the first fixing ring (21) is larger than that of a wheel flange of the brake disc to be detected, the first fixing ring (21) is fixedly provided with a plurality of locating rods (211), the locating rods (211) are in one-to-one correspondence with hub bolt holes of the brake disc to be detected, the second fixing ring (22) is provided with a plurality of locating holes (221) in one-to-one correspondence with the locating rods (211), the second fixing ring (22) is slidably connected with a plurality of inserting cylinders (231) in the locating holes (221), the inserting cylinders (231) are sleeved on the outer sides of the locating rods (211), one ends of the first fixing rings (21) close to the inserting cylinders (231) are fixedly connected with abutting plates (23) together, and elastic pieces (232) are fixedly arranged between the abutting plates (23) and the second fixing rings (22).
  3. 3. The device for detecting the friction and wear performance of the automobile brake disc according to claim 2, wherein a sliding cylinder (212) is fixedly arranged at one end, far away from the second positioning ring (51), of the first fixing ring (21), the driving wheel (32) is slidably connected to the outer side of the sliding cylinder (212) along the axis direction of the driving wheel, the outer diameter of the driven wheel (33) is gradually reduced or increased along the axis direction, and one side, close to the driving wheel (32), of the driven wheel (33) is parallel to the side wall of the sleeve.
  4. 4. The device for detecting the friction and wear performance of the automobile brake disc according to claim 1, wherein the upper end face of the workbench (1) is slidably connected with a sliding rod (5), the sliding rod (5) sequentially and coaxially penetrates through the first fixed ring (21) and the second fixed ring (22), a positioning ring (51) is sleeved on the outer side wall of the sliding rod (5), an end face bearing (52) is fixedly arranged at one end, close to the first fixed ring (21), of the positioning ring (51), the end face bearing (52) is used for abutting against one end, far away from the first fixed ring (21), of the second fixed ring (22), the positioning ring (51) is detachably connected with the sliding rod (5), a push ring (53) is fixedly arranged outside the sliding rod (5), and the push ring (53) is located between the second fixed ring (22) and the first fixed ring (21).
  5. 5. The device for detecting the friction and wear performance of the automobile brake disc according to claim 4, wherein a driving motor (58) is fixedly arranged on the upper end face of the workbench (1), a worm (57) is coaxially and fixedly arranged on the driving motor (58), a worm wheel (56) is connected with the worm (57) in a meshed mode, the worm wheel (56) is rotationally connected with the workbench (1), a driving gear (55) is coaxially and fixedly arranged on the worm wheel (56), and a tooth groove (54) meshed with the driving gear (55) is formed in the outer side wall of one end, far away from the positioning ring (51), of the sliding rod (5).
  6. 6. The device for detecting the friction and wear performance of the automobile brake disc according to claim 1, wherein the upper end face of the workbench (1) is axially and slidably connected with a movable frame (6) along the first fixed ring (21), the movable frame (6) is fixedly connected with a sliding seat (12), two clamping assemblies (7) with opposite sliding directions are vertically and slidably connected in the movable frame (6), the two clamping assemblies (7) are used for respectively clamping the upper end and the lower end of the brake disc to be detected, and the two clamping assemblies (7) are symmetrically arranged along the horizontal plane where the axis of the first fixed ring (21) is located.
  7. 7. The device for detecting the friction and wear performance of the automobile brake disc according to claim 6, wherein the clamping assembly (7) comprises a sliding plate (71), a synchronous plate (72) and two clamping plates (73), the two clamping plates (73) are in sliding connection with the sliding plate (71) along opposite sliding directions, the synchronous plate (72) is located between the two clamping plates (73), one end, close to the clamping plates (73), of the synchronous plate (72) is rotationally connected with a connecting rod (74), one end, far away from the synchronous plate (72), of the connecting rod (74) is rotationally connected with the clamping plates (73), one end, close to the synchronous plate (72), of the clamping plates (73) is fixedly provided with a clamping block (75), and the clamping block (75) is used for abutting clamping the brake disc to be detected.
  8. 8. The device for detecting the friction and wear properties of the automobile brake disc according to claim 6, wherein an annular track (222) is fixedly arranged at one end, far away from the first fixed ring (21), of the second fixed ring (22), a plurality of discs (121) are arranged in the annular track (222), a round rod (122) is fixedly arranged at one end, far away from the first fixed ring (21), of each disc (121), and the round rod (122) is fixedly connected with the movable frame (6) along a horizontal axis.
  9. 9. The device for detecting the friction and wear properties of the automobile brake disc according to claim 7, wherein an elastic reset piece (76) is fixedly arranged between the sliding plate (71) and the synchronous plate (72), a plurality of elastic reset pieces (76) are fixedly arranged at one end, close to the synchronous plate (72), of the sliding plate (71), and the synchronous plate (72) is positioned between a plurality of guide rods (77).
  10. 10. The device for detecting the friction and wear performance of the automobile brake disc according to claim 1, wherein a rectangular rod (431) is fixedly arranged at one end, close to the second screw rod (44), of the first screw rod (43), the rectangular rod (431) penetrates through the second screw rod (44) and then is rotationally connected with the bracket (11), and the second screw rod (44) is slidably connected with the rectangular rod (431).

Description

Automobile brake disc friction and wear performance detection device Technical Field The application relates to the technical field of brake disc testing, in particular to a device for detecting friction and wear properties of an automobile brake disc. Background In the field of automobile manufacturing and detection, performance detection of a brake system is of paramount importance. The brake disc is used as a key component of a brake system, and the friction and wear performance of the brake disc directly influences the braking effect and the running safety of an automobile. With the continuous development of the automobile industry, the detection requirement on the performance of the brake disc is higher and higher, the reliability of the brake disc in actual use can be ensured by accurate detection, the safety accidents caused by brake faults are reduced, and the life and property safety of people is ensured. Meanwhile, the high-efficiency and accurate detection device is also beneficial to improving the production quality and efficiency of automobile manufacturers and reducing the production cost. Referring to fig. 1, the brake disc includes a wheel flange provided with a plurality of hub bolt holes and two brake discs. The related art can refer to the chinese patent with publication number CN213985652U and discloses a multi-working condition brake disc abrasion testing device, which comprises a table top, the top of the table top is fixedly connected with a base plate, a strip-shaped hole is formed in the base plate, an operator is arranged in the strip-shaped hole, the edges of two sides of the base plate are respectively and fixedly connected with a first mounting plate and a second mounting plate, and one side of the first mounting plate is fixedly connected with a motor. This multiplex condition brake disc wearing and tearing testing arrangement can drive the brake disc through the starter motor and rotate, can drive two brake blocks and press from both sides tight brake disc through twisting the knob to this realizes wearing and tearing simulation test, can adjust the rotational speed of brake disc through the removal end cover, can adjust the brake block clamping force through twisting the knob, can adjust the brake block clamping position through adjusting the length of telescopic link, with this can test under the multiple condition, can simulate multiple wearing and tearing scene, and the suitability is strong, makes the test result more accurate comprehensive. For the related technology, because the brake disc with different specifications has different thicknesses, the brake disc is difficult to be ensured to be positioned in the middle of two brake pads accurately after being fixed by adopting a traditional fixing mode. In the detection process, the contact between the two brake discs and the brake pad is uneven when the two brake discs synchronously move, so that the accuracy of the detection result is affected, and the friction and wear performance of the brake discs cannot be truly reflected. Disclosure of Invention In order to improve detection accuracy, the application provides a device for detecting friction and wear properties of an automobile brake disc. The application provides a device for detecting friction and wear properties of an automobile brake disc, which adopts the following technical scheme: The device comprises a workbench, a support fixedly arranged on the upper end face of the workbench, a sliding seat connected with the support in a sliding manner, a fixing assembly comprising a first fixing ring and a second fixing ring, a brake disc to be tested is fixedly connected between the first fixing ring and the second fixing ring, the first fixing ring is rotationally connected with the workbench along the axis of the first fixing ring, the second fixing ring is rotationally connected with the support along the axis of the second fixing ring, the sliding seat and the second fixing ring synchronously move, a driving assembly comprises a rotating motor, a driving wheel and a driven wheel, the rotating motor is fixedly connected with the workbench, the output end of the rotating motor is fixedly connected with the driving wheel, the driving wheel is meshed with the driven wheel, the driven wheel is coaxially and synchronously rotated with the first fixing ring, a clamping assembly comprises a first brake pad, a second brake pad, a first screw rod, a second screw rod and a clamping driving piece, the first screw rod is in threaded connection with the second screw rod, the first screw rod is rotationally connected with the support, the first screw rod is coaxially and slidingly connected with the second screw rod, the driving piece is used for driving the first screw rod and the second screw rod to synchronously rotate, and the distance between the first fixed screw rod and the first fixed ring and the second fixed ring and the first brake pad and the second fixed ring and the