A device for detecting the performance of an electric vehicle brake

Abstract

The application relates to the technical field of electric vehicle brake detection equipment, and discloses an electric vehicle brake performance detection device, the outer side of the detection device body is sleeved with a brake disc, the outer side of the detection device body is provided with a brake caliper, the detection device body comprises a detection seat, a gas storage assembly is arranged in the detection seat, a driving mechanism is fixedly installed at the upper end of the detection seat, a self-adapting displacement assembly is fixedly installed on one side of the detection seat, a driven rod is rotatably installed on the inner side of the self-adapting displacement assembly, a positioning assembly is rotatably installed on the side, away from the detection seat, of the self-adapting displacement assembly, and the outer side of the positioning assembly is sleeved with a clamping piece. The cooling speed can be effectively accelerated, the waiting time is shortened, and the detection efficiency is improved. After multiple detections at different rotating speeds are completed, the clamping piece is automatically separated from the brake disc through reverse driving of the driving mechanism, and the clamping piece can be quickly disassembled.

Description

Technical Field

[0001] This invention relates to the field of electric vehicle brake testing equipment technology, and in particular to an electric vehicle brake performance testing device. Background Technology

[0002] As one of the core components of the electric vehicle safety system, the performance of the electric vehicle brake is directly related to the braking effect of the vehicle and the life safety of the driver and passengers. Therefore, in order to understand the braking performance parameters of the brake under different speed conditions, it is necessary to test the brake multiple times.

[0003] For example, the existing Chinese patent with publication number CN220356668U discloses an automotive brake performance testing device. It starts a motor to drive a second pulley to rotate, which in turn drives a belt to drive a first pulley to rotate, thereby causing the drive shaft to drive the brake to rotate on a fixed frame. When the motor is turned off, the brake continues to rotate due to inertia. By analyzing the pressure change and speed parameters, and by analyzing the wear thickness on the brake surface, the braking performance of the brake can be analyzed.

[0004] After completing one test, the testing equipment needs to wait for a considerable period of time until the brake has completely cooled down before conducting the next test at a different speed. This is because the brake experiences a rapid temperature rise during braking, which may lead to thermal deformation, thermal fade, and other issues. These changes can alter the dimensions and frictional characteristics of the braking components, potentially affecting the accuracy of subsequent tests at different speeds.

[0005] However, waiting for the brake to cool down takes a lot of time, which greatly reduces the detection efficiency and prolongs the entire detection cycle.

[0006] Therefore, there is a need for a device to test the performance of electric vehicle brakes. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to overcome the defects of the prior art. The present invention proposes an electric vehicle brake performance testing device to solve the problem in the prior art that after the test is completed, it is necessary to wait for the brake to cool down for a long time, which leads to a long test cycle and thus reduces the test efficiency.

[0008] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: an electric vehicle brake performance testing device, including a testing device body, a brake disc sleeved on the outside of the testing device body, and a brake caliper installed on the outside of the testing device body.

[0009] The detection device body includes a detection base, inside which is an air storage component. A drive mechanism is fixedly mounted on the upper end of the detection base. An adaptive displacement component is fixedly mounted on one side of the detection base. A driven rod is rotatably mounted on the inner side of the adaptive displacement component. A positioning component is rotatably mounted on the side of the adaptive displacement component away from the detection base. A clamping component is sleeved on the outer side of the positioning component. First, the brake caliper is connected and fixed to the adaptive displacement component. Then, the positioning component is adjusted according to the size of the brake disc. The brake disc and the clamping component are then sequentially sleeved on the outer side of the positioning component. By activating the drive mechanism, the positioning component, the brake disc, and the clamping component rotate, causing the clamping component to gradually approach the brake disc and push it to abut against the positioning component. This secures the brake disc between the positioning component and the clamping component, effectively improving the stability of the brake disc during rotation and preventing wobbling that could affect subsequent detection parameters. Simultaneously, the clamping component connects to the driven rod and drives it synchronously. Rotation causes gas to gradually accumulate inside the air storage assembly. As the clamping component approaches the brake disc, it also compresses the gas inside the adaptive displacement assembly, forcing the adaptive displacement assembly to push the brake caliper to the required working position for subsequent braking operations. When the brake disc reaches a certain speed, the drive mechanism stops, and the brake caliper begins to brake the brake disc, which continues to rotate due to inertia, until the brake disc completely stops rotating. The detection seat records and analyzes various test items such as temperature, wear, and number of rotations of the brake disc after inertial rotation to reflect the braking performance of the brake disc and brake caliper and whether it meets the qualified standards. Subsequently, the air storage assembly discharges the previously stored gas and blows it onto the brake disc and brake caliper, thereby effectively accelerating the cooling speed, shortening the waiting time, and improving the testing efficiency. After multiple tests at different speeds are completed, the drive mechanism reverses the direction, and the clamping component automatically moves away from the brake disc for quick disassembly.

[0010] Furthermore, the positioning component includes a hollow disk. Multiple straight grooves are formed through one side of the hollow disk. An adjusting disk is rotatably mounted inside the hollow disk. Multiple arc-shaped grooves are formed through the interior of the adjusting disk. Positioning rods are movably mounted on the inner sides of both the straight and arc-shaped grooves. These positioning rods have identical structures. A limiting ring one is fixedly mounted on the outer side of each positioning rod, and a limiting ring two is fixedly mounted on one end of each positioning rod. The limiting ring one is located on the outer side of the hollow disk, and the limiting ring two is located on the side away from the adjusting disk. A rotating shaft one is formed through the interior of the hollow disk, and the rotating shaft one is rotatably connected to the hollow disk. Next, a rotating handle is fixedly installed at one end of the rotating shaft. A toothed groove is opened on the side of the adjusting disc near the limiting ring. The rotating shaft is meshed with the toothed groove. When it is necessary to adjust the positioning component according to the size of the brake disc, the rotating handle is turned to drive the rotating shaft to rotate. Since the rotating shaft is meshed with the toothed groove, the adjusting disc is driven to rotate. The positioning rod will move horizontally in the straight groove to cope with the curvature change of the arc groove. Thus, it can be adjusted at any time according to the size of the brake disc, meet the positioning of brake discs of different specifications, and expand the range of applications.

[0011] Furthermore, the drive mechanism includes a servo motor, which is fixedly connected to the air storage component. A rotating shaft is fixedly installed at the output end of the servo motor. A toothed groove is provided on one side of the cavity disk. The rotating shaft is meshed with the toothed groove. The rotating shaft is driven to rotate by the servo motor. Because the rotating shaft and the toothed groove are meshed, the positioning component is driven to drive the brake disk to rotate faster to achieve the required speed.

[0012] Furthermore, the clamping component includes a threaded cap, on the outside of which multiple sets of U-shaped parts are fixedly installed. These U-shaped parts are distributed circumferentially around the threaded cap as the axis. Each set of U-shaped parts corresponds to a set of positioning rods. Regardless of how the positioning component is adjusted, simply aligning the U-shaped parts with the positioning rods and passing them through them will allow for initial positioning of the brake disc, making the operation convenient.

[0013] Furthermore, a magnet is fixedly installed at the center of the inner wall of the threaded cap, and a threaded groove is opened on the outer side of the driven rod. An electromagnet is fixedly installed inside one end of the driven rod. When the servo motor drives the positioning assembly to rotate as a whole, the electromagnet is energized, thereby generating a magnetic field that attracts the magnet. This attracts the threaded cap to drive the U-shaped part to gradually approach the brake disc. Since the resistance to the rotation of the driven rod is greater than the frictional force of the threaded connection between the threaded cap and the threaded groove, the threaded cap will be threadedly connected to the driven rod until it contacts the brake disc and continues to be threadedly connected. At the same time, it pushes the brake disc closer to the cavity disc, and finally clamps the brake disc between the positioning assembly and the clamping part, preventing the brake disc from shifting left and right during rotation, which would affect the subsequent test results.

[0014] Furthermore, multiple arc-shaped plates are fixedly installed on one side of the threaded cap;

[0015] The adaptive displacement assembly includes a hollow cylinder fixedly connected to a detection seat. Multiple springs are fixedly installed inside the hollow cylinder. One end of each spring is fixedly mounted with a ring plate that slides along the inner wall of the hollow cylinder. A retaining ring, fixedly connected to the detection seat, is fixedly installed on the outer side of the hollow cylinder. A piston cylinder, with the retaining ring fixedly mounted on the outer side of the hollow cylinder, passes through the retaining ring. One end of the piston cylinder is connected to the interior of the hollow cylinder. A piston rod is slidably mounted on the inner side of the other end of the piston cylinder. A connector is fixedly mounted on one end of the piston rod, connecting to a brake caliper. The connector is slidably mounted on the inner side of a support frame, which is fixedly connected to the detection seat. The piston cylinder is installed through the support frame, and the piston cylinder is fixedly connected to the support frame. As the threaded cap approaches the brake disc, it simultaneously pushes multiple arc-shaped plates, causing the arc-shaped plates to enter the cavity cylinder and contact the ring plate. As it continues to penetrate deeper, it pushes the ring plate to compress the spring's stroke. During the compression process, the gas between the cavity cylinder and the ring plate is squeezed into the piston cylinder. As the amount of gas inside the piston cylinder continues to increase, it pushes the piston rod to gradually extend out of the piston cylinder. The piston rod then pushes the connecting parts and the brake caliper to move, eventually moving the brake caliper to the outside of the brake disc, so that the brake caliper can brake the brake disc by relying on friction.

[0016] Furthermore, a collar is fixedly installed on the outside of the driven rod. The collar is rotatably connected to the cavity cylinder. When the electromagnet and the magnet attract each other, the driven rod will not move towards the clamping part because the collar is rotatably connected to the cavity cylinder. Instead, the clamping part moves towards the driven rod, thereby enabling the subsequent movement of the brake caliper.

[0017] Furthermore, symmetrical protrusions are provided on the outer side of the other end of the driven rod, and the protrusions are fixedly connected to the driven rod. The detection seat includes a column, and a cavity is opened inside the column.

[0018] The gas storage assembly includes a gas storage box, which is fixedly installed inside the cavity, and two sets of gas replenishment components are fixedly installed on the upper end of the gas storage box.

[0019] The air supply component includes an air inlet pipe fixedly connected to the air tank. The air inlet pipe is connected to the air tank, and a one-way valve is fixedly installed inside the air inlet pipe. An elastic angle plate is fixedly installed at the end of the air inlet pipe away from the air tank. A rubber plate is fixedly installed at the connection point of the elastic angle plate, and a compression spring is fixedly installed inside the elastic angle plate. A second one-way valve is installed through the elastic angle plate. The two sets of air supply components have identical structures. The combination of the elastic angle plate and the rubber plate forms a closed space inside. During the process of the threaded cap approaching the driven rod and being threaded, the driven rod will not rotate due to the obstruction of the two sets of protrusions by the two sets of elastic angle plates. When the threaded cap approaches the driven rod and is threaded, the driven rod will not rotate. Only after the nut and brake disc are pressed together will the driven rod be forcibly rotated. The driven rod then rotates the cam, which in turn squeezes the elastic angle plate, causing it to deform. At the same time, the compression spring is compressed, and the gas in the space enters the intake pipe through the one-way valve and is eventually stored in the air tank. When the cam rotates to a certain angle, it will stop squeezing the elastic angle plate. At this time, relying on the shape memory of the elastic angle plate and the reset of the compression spring, the elastic angle plate and rubber plate quickly return to their initial shape. Since there is no gas in the space at this time, a siphon effect is formed on the one-way valve, causing the one-way valve to start replenishing the gas. This process is repeated, and the gas in the air tank increases.

[0020] Furthermore, an exhaust pipe is fixedly installed at the upper end of the air tank, and a solenoid valve is fixedly installed along the path of the exhaust pipe. An arc-shaped pipe is fixedly installed at one end of the exhaust pipe, and multiple exhaust heads are fixedly installed on the inner arc surface of the arc-shaped pipe. After the test is completed, the gas stored in the air tank is transported from the exhaust pipe to the arc-shaped pipe by opening the solenoid valve, and finally sprayed out from the multiple exhaust heads, thereby effectively accelerating the cooling speed of the brake disc and brake caliper, thus shortening the waiting time and improving the testing efficiency.

[0021] Furthermore, a connecting plate is fixedly installed on the outer side of the column. A temperature sensor, a pressure sensor, and a displacement sensor are fixedly installed on one end of the connecting plate. During the process of the threaded cap pushing the brake disc closer to the cavity disc, the brake disc will simultaneously come into contact with the temperature sensor, pressure sensor, and displacement sensor and generate a certain amount of pressure. When the brake disc comes to a complete stop, the temperature, wear, and braking distance of the brake disc during the braking process can be recorded and analyzed by the temperature sensor, pressure sensor, and displacement sensor, so that personnel can intuitively understand the performance of the brake.

[0022] Compared with the prior art, the beneficial effects of the present invention include: firstly, the brake caliper is connected and fixed to the adaptive displacement component; then, the positioning component is adjusted according to the size of the brake disc; and the brake disc and clamping member are sequentially sleeved on the outside of the positioning component. The drive mechanism is activated to rotate the positioning component, the brake disc on its outside, and the clamping member, causing the clamping member to gradually approach the brake disc and push it against the positioning component, thereby fixing the brake disc between the positioning component and the clamping member. This effectively improves the stability of the brake disc during rotation, preventing wobbling that could affect subsequent detection parameters. Simultaneously, the clamping member is connected to the driven rod and drives it to rotate synchronously, causing gas to gradually accumulate inside the gas storage component. Furthermore, as the clamping member approaches the brake disc, it also compresses the gas inside the adaptive displacement component. This forces the adaptive displacement component to push the brake caliper to the required working position, facilitating subsequent braking operations. When the brake disc reaches a certain speed, the drive mechanism stops driving, and at the same time, the brake caliper starts working to brake the brake disc, which continues to rotate due to inertia, until the brake disc completely stops rotating. The detection seat records and analyzes various test items such as temperature, wear, and number of rotations of the brake disc after it rotates due to inertia, to reflect the braking performance of the brake disc and brake caliper and whether it meets the qualified standard. Subsequently, the air storage component discharges the previously stored gas and blows it onto the brake disc and brake caliper, thereby effectively accelerating the cooling speed, shortening the waiting time, and improving the testing efficiency. After multiple tests at different speeds are completed, the drive mechanism reverses the drive, and the clamping part will automatically move away from the brake disc, allowing for quick disassembly. Attached Figure Description

[0023] The disclosure of this invention is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this invention. In the drawings, the same reference numerals are used to refer to the same parts. Wherein:

[0024] Figure 1 The illustration shows an overall structural diagram according to one embodiment of the present invention. Figure 1 ,

[0025] Figure 2 The illustration shows an overall structural diagram according to one embodiment of the present invention. Figure 2 ,

[0026] Figure 3 The schematic diagram shows a structural schematic of the detection device body according to an embodiment of the present invention.

[0027] Figure 4 The schematic diagram shows an exploded view of the structure of the detection device body according to an embodiment of the present invention.

[0028] Figure 5The schematic diagram shows a cross-sectional view of the detection seat according to an embodiment of the present invention.

[0029] Figure 6 The schematic diagram shows a structural plan view of a gas storage assembly according to an embodiment of the present invention.

[0030] Figure 7 The schematic diagram shows a cross-sectional view of an adaptive displacement component according to an embodiment of the present invention.

[0031] Figure 8 The schematic diagram shows a cross-sectional view of the driven rod according to one embodiment of the present invention.

[0032] Figure 9 An exploded view of the structure of a positioning component according to an embodiment of the present invention is shown schematically.

[0033] Figure 10 An exploded view of the structure of a positioning component according to an embodiment of the present invention is shown schematically.

[0034] Figure 11 The schematic diagram shows a cross-sectional view of the clamping member according to one embodiment of the present invention.

[0035] Figure 12 The schematic diagram shows a structural schematic of a drive mechanism proposed according to an embodiment of the present invention.

[0036] Numbered components in the diagram: 1. Brake disc; 2. Brake caliper; 3. Detection device body; 31. Detection seat; 311. Column; 3111. Cavity; 312. Displacement sensor; 313. Connecting plate; 314. Temperature sensor; 315. Pressure sensor; 32. Air storage assembly; 321. Air tank; 322. Air replenishment component; 3221. Inlet pipe; 3222. One-way valve one; 3223. Elastic angle plate; 3224. Compression spring; 3225. One-way valve two; 3226. Rubber plate; 323. Outlet pipe; 324. Solenoid valve; 325. Arc-shaped pipe; 326. Exhaust head; 33. Adaptive displacement assembly; 331. Cavity cylinder; 332. Fixing ring; 333. Spring; 334. Ring plate 335. Piston cylinder; 336. Support frame; 337. Piston rod; 338. Connector; 34. Driven rod; 341. Threaded groove; 342. Electromagnet; 343. Collar; 344. Protrusion; 35. Positioning assembly; 351. Cavity plate; 3511. Straight groove; 3512. Toothed groove two; 352. Rotating shaft one; 3521. Rotating handle; 353. Adjusting plate; 3531. Arc groove; 3532. Toothed groove one; 354. Positioning rod; 3541. Limiting ring one; 3542. Limiting ring two; 36. Clamping component; 361. Threaded cap; 362. Magnet; 363. U-shaped component; 364. Arc plate; 37. Drive mechanism; 371. Servo motor; 372. Rotating shaft two. Detailed Implementation

[0037] It is readily understood that, based on the technical solution of this invention, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of the invention. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative examples of the technical solution of this invention and should not be considered as the entirety of the invention or as limitations or restrictions on the technical solution of this invention.

[0038] To further understand the content of this invention, a detailed description of the invention will be provided in conjunction with the accompanying drawings.

[0039] According to one embodiment of the present invention, Figure 1-4 As shown, an electric vehicle brake performance testing device includes a testing device body 3, a brake disc 1 sleeved on the outside of the testing device body 3, and a brake caliper 2 installed on the outside of the testing device body 3.

[0040] The detection device body 3 includes a detection seat 31, an air storage component 32 is disposed inside the detection seat 31, a drive mechanism 37 is fixedly installed on the upper end of the detection seat 31, an adaptive displacement component 33 is fixedly installed on one side of the detection seat 31, a driven rod 34 is rotatably installed on the inner side of the adaptive displacement component 33, a positioning component 35 is rotatably installed on the side of the adaptive displacement component 33 away from the detection seat 31, and a clamping member 36 is sleeved on the outer side of the positioning component 35. First, the brake caliper 2 is connected and fixed to the adaptive displacement component 33, and then according to the brake disc The size of the positioning component 35 is adjusted accordingly, and the brake disc 1 and the clamping member 36 are sequentially fitted onto the outside of the positioning component 35. By activating the drive mechanism 37, the positioning component 35, the brake disc 1 on its outside, and the clamping member 36 are rotated, causing the clamping member 36 to gradually approach the brake disc 1 and push it to abut against the positioning component 35, thereby fixing the brake disc 1 between the positioning component 35 and the clamping member 36. This effectively improves the stability of the brake disc 1 during rotation and avoids shaking that could affect subsequent detection parameters. At the same time, the clamping member... 36 is connected to the driven rod 34 and drives it to rotate synchronously, causing gas to gradually accumulate inside the air storage component 32. As the clamping member 36 approaches the brake disc 1, it also squeezes the gas inside the adaptive displacement component 33, forcing the adaptive displacement component 33 to push the brake caliper 2 to the required working position, facilitating subsequent braking operations. When the brake disc 1 reaches a certain speed, the drive mechanism 37 stops driving, and at the same time, the brake caliper 2 starts working to brake the brake disc 1, which continues to rotate by inertia, until the brake disc 1 completely stops rotating. The detection seat 31 records and analyzes various test items such as temperature, wear, and number of rotations of the brake disc 1 after it rotates by inertia, to reflect the braking performance of the brake disc 1 and the brake caliper 2 and whether it meets the qualified standard. Then, the air storage component 32 discharges the previously stored gas and blows it onto the brake disc 1 and the brake caliper 2, thereby effectively accelerating the cooling speed, shortening the waiting time, and improving the detection efficiency. After multiple tests at different speeds are completed, the clamping member 36 will automatically move away from the brake disc 1 by the reverse drive mechanism 37, allowing for quick disassembly.

[0041] According to one embodiment of the present invention, Figure 9-10As shown, the positioning assembly 35 includes a cavity disk 351. Multiple straight grooves 3511 are formed through one side of the cavity disk 351. An adjusting disk 353 is rotatably mounted inside the cavity disk 351. Multiple arc-shaped grooves 3531 are formed through the interior of the adjusting disk 353. Positioning rods 354 are movably mounted on the inner sides of both the straight grooves 3511 and the arc-shaped grooves 3531. The positioning rods 354 have identical structures. A first limiting ring 3541 is fixedly mounted on the outer side of each positioning rod 354, and a second limiting ring 3542 is fixedly mounted on one end of each positioning rod 354. The first limiting ring 3541 is located on the outer side of the cavity disk 351, and the second limiting ring 3542 is located on the side of the first limiting ring 3541 away from the adjusting disk 353. A first rotating shaft 352 is formed through the interior of the cavity disk 351. 52 is rotatably connected to the cavity disc 351. A rotating handle 3521 is fixedly installed at one end of the rotating shaft 352. The adjusting disc 353 has a toothed groove 3532 on the side near the limiting ring 3542. The rotating shaft 352 is meshed with the toothed groove 3532. When it is necessary to adjust the positioning component 35 according to the size of the brake disc 1, the rotating handle 3521 is rotated to drive the rotating shaft 352 to rotate. Since the rotating shaft 352 is meshed with the toothed groove 3532, the adjusting disc 353 is driven to rotate. The positioning rod 354 will move horizontally in the straight groove 3511 to cope with the curvature change of the arc groove 3531. Thus, it can be adjusted at any time according to the size of the brake disc 1 to meet the positioning of brake discs 1 of different specifications and expand the range of use.

[0042] According to one embodiment of the present invention, Figure 10 , Figure 12 As shown, the drive mechanism 37 includes a servo motor 371, which is fixedly connected to the air storage component 32. A rotating shaft 372 is fixedly installed at the output end of the servo motor 371. A toothed groove 3512 is provided on one side of the cavity disk 351. The rotating shaft 372 is meshed with the toothed groove 3512. The servo motor 371 drives the rotating shaft 372 to rotate. Because the rotating shaft 372 and the toothed groove 3512 are meshed, the positioning component 35 is driven to drive the brake disk 1 to rotate faster to achieve the required speed.

[0043] According to one embodiment of the present invention, Figure 11 As shown, the clamping member 36 includes a threaded cap 361, and multiple sets of U-shaped members 363 are fixedly installed on the outside of the threaded cap 361. The multiple sets of U-shaped members 363 are distributed in a circle around the threaded cap 361 as the axis. The multiple sets of U-shaped members 363 correspond one-to-one with multiple sets of positioning rods 354. No matter how the positioning component 35 is adjusted, as long as the multiple sets of U-shaped members 363 correspond one-to-one with the multiple sets of positioning rods 354 and pass through them, the brake disc 1 can be initially positioned, which is convenient to operate.

[0044] According to one embodiment of the present invention, Figure 8 , Figure 11 As shown, a magnet 362 is fixedly installed at the axial center of the inner wall of the threaded cap 361. A threaded groove 341 is opened on the outer side of the driven rod 34. An electromagnet 342 is fixedly installed inside one end of the driven rod 34. When the servo motor 371 drives the positioning component 35 to rotate as a whole, the electromagnet 342 is energized, thereby generating a magnetic field that attracts the magnet 362. This attracts the threaded cap 361 to drive the U-shaped part 363 to gradually approach the brake disc 1. Since the resistance to the rotation of the driven rod 34 is greater than the frictional force of the threaded connection between the threaded cap 361 and the threaded groove 341, the threaded cap 361 will be threadedly connected to the driven rod 34 until it contacts the brake disc 1 and continues to be threadedly connected. At the same time, it pushes the brake disc 1 closer to the cavity disc 351, and finally clamps the brake disc 1 between the positioning component 35 and the clamping part 36, so as to prevent the brake disc 1 from shifting left and right during the rotation process, which would affect the subsequent detection results.

[0045] According to one embodiment of the present invention, Figure 7 , Figure 11 As shown, multiple arc-shaped plates 364 are fixedly installed on one side of the threaded cap 361;

[0046] The adaptive displacement assembly 33 includes a cavity cylinder 331 fixedly connected to the detection seat 31. Multiple springs 333 are fixedly installed inside the cavity cylinder 331. One end of each spring 333 is fixedly mounted with a ring plate 334 that slides along the inner wall of the cavity cylinder 331. A fixing ring 332 fixedly connected to the detection seat 31 is fixedly installed on the outer side of the cavity cylinder 331. A piston cylinder 335, with the fixing ring 332 fixedly mounted on the outer side of the cavity cylinder 331, passes through the fixing ring 332. One end of the piston cylinder 335 communicates with the interior of the cavity cylinder 331. A piston rod 337 slides along the inner side of the other end of the piston cylinder 335. A connector 338 is fixedly mounted on one end of the piston rod 337. The connector 338 is connected to the brake caliper 2. The connector 338 slides along the inner side of the support frame 336. The support frame 336 is connected to the detection seat. 31. A fixed connection is made, with piston cylinder 335 passing through support frame 336. Piston cylinder 335 is fixedly connected to support frame 336. As threaded cap 361 approaches brake disc 1, it simultaneously pushes multiple arc-shaped plates 364, causing arc-shaped plates 364 to enter cavity cylinder 331 and contact ring plate 334. As it goes deeper, it pushes ring plate 334 to compress the stroke of spring 333. During the compression process, the gas between cavity cylinder 331 and ring plate 334 is squeezed into piston cylinder 335. As the amount of gas inside piston cylinder 335 increases, it pushes piston rod 337 to gradually extend out of piston cylinder 335. Piston rod 337 then pushes connector 338 and brake caliper 2 to move, eventually moving brake caliper 2 to the outside of brake disc 1, so that brake caliper 2 can brake brake disc 1 by friction.

[0047] According to one embodiment of the present invention, Figure 7-8 As shown, a collar 343 is fixedly installed on the outer side of the driven rod 34. The collar 343 is rotatably connected to the cavity cylinder 331. When the electromagnet 342 and the magnet 362 are attracted, the driven rod 34 will not move towards the clamping member 36 because the collar 343 is rotatably connected to the cavity cylinder 331. Instead, the clamping member 36 moves towards the driven rod 34, thereby enabling the subsequent movement of the brake caliper 2.

[0048] According to one embodiment of the present invention, Figure 5-6 , Figure 8 As shown, a protrusion 344 is symmetrically arranged on the outer side of the other end of the driven rod 34. The protrusion 344 is fixedly connected to the driven rod 34. The detection seat 31 includes a column 311, and a cavity 3111 is opened inside the column 311.

[0049] The gas storage assembly 32 includes a gas storage box 321, which is fixedly installed in the cavity 3111. Two sets of gas replenishment components 322 are fixedly installed on the upper end of the gas storage box 321.

[0050] The air supply component 322 includes an air inlet pipe 3221 fixedly connected to the air storage tank 321. The air inlet pipe 3221 is connected to the air storage tank 321. A one-way valve 3222 is fixedly installed inside the air inlet pipe 3221. An elastic angle plate 3223 is fixedly installed at the end of the air inlet pipe 3221 away from the air storage tank 321. A rubber plate 3226 is fixedly installed at the connection of the elastic angle plate 3223. A compression spring 3224 is fixedly installed inside the elastic angle plate 3223. A second one-way valve 3225 is installed through the elastic angle plate 3223. The two sets of air supply components 322 have the same structure. The combination of the elastic angle plate 3223 and the rubber plate 3226 forms a closed space inside. When the threaded cap 361 approaches the driven rod 34 and is threadedly connected, due to the obstruction of the two sets of protrusions 344 by the two sets of elastic angle plates 3223, the driven rod 3... 4. No rotation will occur. Only when the threaded cap 361 is pressed against the brake disc 1 will the driven rod 34 be forcibly rotated. The driven rod 34 will then rotate the protrusion 344, thereby squeezing the elastic angle plate 3223 to deform it. At the same time, the compression spring 3224 will be compressed, and the gas in the space will enter the air intake pipe 3221 through the one-way valve 3222 and finally be stored in the air tank 321. When the protrusion 344 rotates to a certain angle, it will stop squeezing the elastic angle plate 3223. At this time, relying on the shape memory of the elastic angle plate 3223 and the reset of the compression spring 3224, the elastic angle plate 3223 and the rubber plate 3226 will quickly return to their initial shape. Since there is no gas in the space at this time, a siphon effect will be formed on the one-way valve 3225, causing the one-way valve 3225 to start replenishing gas. This process will continue, and the gas in the air tank 321 will increase.

[0051] According to one embodiment of the present invention, Figure 6 As shown, an exhaust pipe 323 is fixedly installed at the upper end of the air storage tank 321. A solenoid valve 324 is fixedly installed along the path of the exhaust pipe 323. An arc-shaped pipe 325 is fixedly installed at one end of the exhaust pipe 323. Multiple exhaust heads 326 are fixedly installed on the inner arc surface of the arc-shaped pipe 325. After the test is completed, the gas stored in the air storage tank 321 is transported from the exhaust pipe 323 to the arc-shaped pipe 325 by opening the solenoid valve 324, and finally sprayed out from the multiple exhaust heads 326, thereby effectively accelerating the cooling speed of the brake disc 1 and the brake caliper 2, thereby shortening the waiting time and improving the test efficiency.

[0052] According to one embodiment of the present invention, Figure 5 As shown, a connecting plate 313 is fixedly installed on the outer side of the column 311. A temperature sensor 314 is fixedly installed on one end of the connecting plate 313, a pressure sensor 315 is fixedly installed on one end of the connecting plate 313, and a displacement sensor 312 is fixedly installed on one end of the connecting plate 313. When the threaded cap 361 pushes the brake disc 1 close to the cavity disc 351, the brake disc 1 will simultaneously contact the temperature sensor 314, the pressure sensor 315, and the displacement sensor 312 and generate a certain amount of pressure. When the brake disc 1 stops completely, the temperature, wear, and braking distance of the brake disc 1 during the braking process can be recorded and analyzed by the temperature sensor 314, the pressure sensor 315, and the displacement sensor 312, so that personnel can intuitively understand the performance of the brake.

[0053] In this embodiment, the brake caliper 2 is first connected and fixed to the adaptive displacement component 33. Then, the positioning component 35 is adjusted according to the size of the brake disc 1. The brake disc 1 and the clamping member 36 are then sequentially placed on the outside of the positioning component 35. The drive mechanism 37 is activated to rotate the positioning component 35, the brake disc 1 on its outside, and the clamping member 36. This causes the clamping member 36 to gradually approach the brake disc 1 and push it to abut against the positioning component 35, thereby fixing the brake disc 1 between the positioning component 35 and the clamping member 36. This effectively improves the stability of the brake disc 1 during rotation and avoids shaking that could affect subsequent detection parameters. At the same time, the clamping member 36 is connected to the driven rod 34 and drives it to rotate synchronously, causing gas to gradually accumulate inside the gas storage component 32. Furthermore, as the clamping member 36 approaches the brake disc 1, it also generates gas inside the adaptive displacement component 33. The compression forces the adaptive displacement component 33 to push the brake caliper 2 to the required working position, facilitating subsequent braking operations. When the brake disc 1 reaches a certain speed, the drive mechanism 37 stops driving, and the brake caliper 2 starts working to brake the brake disc 1, which continues to rotate by inertia, until the brake disc 1 completely stops rotating. The detection seat 31 records and analyzes various test items such as temperature, wear, and number of rotations of the brake disc 1 after it rotates by inertia, to reflect the braking performance of the brake disc 1 and brake caliper 2 and whether it meets the qualified standard. Then, the air storage component 32 discharges the previously stored gas and blows it onto the brake disc 1 and brake caliper 2, thereby effectively accelerating the cooling speed, shortening the waiting time, and improving the detection efficiency. After multiple tests at different speeds are completed, the drive mechanism 37 drives in the opposite direction, and the clamping part 36 will automatically move away from the brake disc 1, allowing for quick disassembly.

[0054] The technical scope of this invention is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this invention, and all such modifications and variations should fall within the protection scope of this invention.

Claims

1. A device for testing the performance of electric vehicle brakes, characterized in that: The device includes a detection device body, a brake disc is sleeved on the outside of the detection device body, and a brake caliper is installed on the outside of the detection device body. The detection device body includes a detection seat, an air storage component is provided inside the detection seat, a drive mechanism is fixedly installed at the upper end of the detection seat, an adaptive displacement component is fixedly installed on one side of the detection seat, a driven rod is rotatably installed on the inner side of the adaptive displacement component, a positioning component is rotatably installed on the side of the adaptive displacement component away from the detection seat, and a clamping component is sleeved on the outer side of the positioning component. The positioning assembly includes a hollow disk with multiple straight grooves extending through one side. An adjusting disk is rotatably mounted inside the hollow disk, and multiple arc-shaped grooves extend through the interior of the adjusting disk. Positioning rods are movably mounted on the inner sides of the straight and arc-shaped grooves. The positioning rods have identical structures. A limiting ring 1 is fixedly mounted on the outer side of each positioning rod, and a limiting ring 2 is fixedly mounted on one end of each positioning rod. The limiting ring 1 is located on the outer side of the hollow disk, and the limiting ring 2 is located on the side of the limiting ring 1 away from the adjusting disk. A rotating shaft 1 extends through the interior of the hollow disk and is rotatably connected to the hollow disk. A rotating handle is fixedly mounted on one end of the rotating shaft 1. A toothed groove 1 is formed on the side of the adjusting disk near the limiting ring 2, and the rotating shaft 1 meshes with the toothed groove 1. A protrusion is symmetrically arranged on the outer side of the other end of the driven rod, and the protrusion is fixedly connected to the driven rod. The detection seat includes a column with a cavity inside. The gas storage assembly includes a gas storage box, which is fixedly installed inside the cavity, and two sets of gas replenishment components are fixedly installed on the upper end of the gas storage box. The air replenishment component includes an air inlet pipe fixedly connected to the air storage tank. The air inlet pipe is connected to the air storage tank. A one-way valve is fixedly installed inside the air inlet pipe. An elastic angle plate is fixedly installed at the end of the air inlet pipe away from the air storage tank. A rubber plate is fixedly installed at the connection of the elastic angle plate. A compression spring is fixedly installed on the inner side of the elastic angle plate. A second one-way valve is installed through the interior of the elastic angle plate. The two sets of air replenishment components have the same structure. An air outlet pipe is fixedly installed at the upper end of the air storage tank. A solenoid valve is fixedly installed along the path of the air outlet pipe. An arc-shaped pipe is fixedly installed at one end of the air outlet pipe. Multiple exhaust heads are fixedly installed on the inner arc surface of the arc-shaped pipe.

2. The electric vehicle brake performance testing device according to claim 1, characterized in that: The drive mechanism includes a servo motor, which is fixedly connected to the gas storage component. A second rotating shaft is fixedly installed at the output end of the servo motor. A second toothed groove is provided on one side of the cavity disk, and the second rotating shaft is meshed with the second toothed groove.

3. The electric vehicle brake performance testing device according to claim 1, characterized in that: The clamping component includes a threaded cap, and multiple sets of U-shaped components are fixedly installed on the outer side of the threaded cap. The multiple sets of U-shaped components are distributed circumferentially around the threaded cap as the axis, and the multiple sets of U-shaped components correspond one-to-one with the multiple sets of positioning rods.

4. The electric vehicle brake performance testing device according to claim 3, characterized in that: A magnet is fixedly installed at the center of the inner wall of the threaded cap, a threaded groove is opened on the outer side of the driven rod, and an electromagnet is fixedly installed inside one end of the driven rod.

5. The electric vehicle brake performance testing device according to claim 4, characterized in that: Multiple arc-shaped plates are fixedly installed on one side of the threaded cap; The adaptive displacement assembly includes a cavity cylinder fixedly connected to the detection seat. Multiple springs are fixedly installed inside the cavity cylinder. One end of each spring is fixedly mounted with a ring plate that slides along the inner wall of the cavity cylinder. A fixing ring fixedly connected to the detection seat is fixedly installed on the outer side of the cavity cylinder. A piston cylinder with the fixing ring is fixedly mounted on the outer side of the cavity cylinder, penetrating the fixing ring. One end of the piston cylinder communicates with the interior of the cavity cylinder. A piston rod slides along the inner side of the other end of the piston cylinder. A connector is fixedly installed at one end of the piston rod, connecting to the brake caliper. The connector slides along the inner side of a support frame, which is fixedly connected to the detection seat. The piston cylinder passes through the support frame and is fixedly connected to the support frame.

6. The electric vehicle brake performance testing device according to claim 5, characterized in that: A collar is fixedly installed on the outer side of the driven rod, and the collar is rotatably connected to the cavity cylinder.

7. The electric vehicle brake performance testing device according to claim 1, characterized in that: A connecting plate is fixedly installed on the outer side of the column. A temperature sensor, a pressure sensor, and a displacement sensor are fixedly installed on one end of the connecting plate.

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