Performance detection device for brake of electric vehicle

Abstract

The invention relates to the technical field of electric vehicle brake detection equipment, and discloses an electric vehicle brake performance detection device, the outer side of a 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, and an air storage assembly is arranged in the detection seat; a driving mechanism is fixedly mounted at the upper end of the detection seat, a self-adaptive displacement assembly is fixedly mounted on one side of the detection seat, a driven rod is rotatably mounted on the inner side of the self-adaptive displacement assembly, a positioning assembly is rotatably mounted on the side, away from the detection seat, of the self-adaptive displacement assembly, and a clamping piece sleeves the outer side of the positioning assembly. And after multiple times of detection of different rotating speeds are completed, through reverse driving of the driving mechanism, the clamping piece can automatically get away from the brake disc, and rapid disassembly can be achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of electric vehicle brake detection equipment, and in particular to an electric vehicle brake performance detection device. Background Art

[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 vehicle's braking effect and the life safety of the driver and passengers. Therefore, in order to understand the braking performance parameters of the brake at different speeds, the brake needs to be tested multiple times.

[0003] For example, the existing Chinese patent with the announcement number CN220356668U discloses a vehicle brake performance testing device. The device starts the motor to drive the second pulley to rotate, and then drives the first pulley to rotate through the belt, thereby causing the drive shaft to drive the brake to rotate on the fixed frame. When the motor is turned off, the brake continues to rotate through inertia. The braking performance of the brake is analyzed by analyzing the pressure change and speed parameters, and then the wear thickness of the brake surface.

[0004] After completing one test, the testing equipment needs to wait for a long time until the brake is completely cooled before conducting the next test at a different speed. Because the brake will heat up rapidly during the braking process, thermal deformation and thermal decay may occur, causing changes in the size and friction characteristics of the brake components, which may affect the accuracy of the next test at a different speed.

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

[0006] Therefore, a brake performance detection device for an electric vehicle is needed. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to overcome the defects of the existing technology. The present invention proposes an electric vehicle brake performance detection device to solve the problem proposed in the above-mentioned existing technology that after the detection is completed, it is necessary to wait for a long time for the brake to cool down, resulting in an extension of the entire detection cycle and thus reducing the detection efficiency.

[0008] To solve the above technical problems, the present invention adopts the following technical solutions: an electric vehicle brake performance testing device, comprising a testing device body, a brake disc sleeved on the outer side of the testing device body, and a brake caliper mounted on the outer side of the testing device body; The detection device body includes a detection seat, an air storage component is provided inside the detection seat, a driving mechanism is fixedly installed on 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, and a positioning component is rotatably installed on the side of the adaptive displacement component away from the detection seat, and a clamping member is sleeved on the outer side of the positioning component. First, the brake caliper is connected and fixed to the adaptive displacement component, and then the positioning component is adjusted accordingly according to the size of the brake disc, and the brake disc and the clamping member are sequentially sleeved on the outer side of the positioning component. By starting the driving mechanism, the positioning component and the brake disc and the clamping member on its outer side are driven to rotate, so that the clamping member gradually approaches the brake disc and pushes it to abut against the positioning component, and then the brake disc is fixedly clamped between the positioning component and the clamping member, effectively improving the stability of the brake disc during rotation and avoiding shaking that affects subsequent detection parameters. At the same time, the clamping member is connected to the driven rod and drives it synchronously Rotation causes gas to gradually accumulate inside the air storage component, and the clamping part will squeeze the gas inside the adaptive displacement component in the process of approaching the brake disc, forcing the adaptive displacement component to push the brake caliper to the required working position, which is convenient for subsequent braking operations. When the brake disc reaches a certain speed, the driving mechanism stops driving, and the brake caliper starts working to brake the brake disc that continues to rotate by inertia until the brake disc completely stops rotating. The temperature, wear, number of laps and other test items of the brake disc after rotating by inertia are recorded and analyzed by the detection seat to reflect the braking performance of the brake disc and brake caliper, whether it meets the qualified standards. Then the air storage component discharges the previously stored gas and blows it to the brake disc and brake caliper, thereby effectively accelerating the cooling speed, thereby shortening the waiting time and improving the detection efficiency. After multiple tests at different speeds are completed, the clamping part will automatically move away from the brake disc through reverse driving of the driving mechanism and can be quickly disassembled.

[0009] Furthermore, the positioning assembly includes a cavity disk, one side of the cavity disk is provided with multiple groups of straight grooves, an adjusting disk is rotatably installed inside the cavity disk, the interior of the adjusting disk is provided with multiple groups of arc grooves, and positioning rods are movably installed on the inner sides of the multiple groups of straight grooves and the multiple groups of arc grooves, and the structural composition of the multiple groups of positioning rods is the same, a limiting ring 1 is fixedly installed on the outer side of the positioning rod, and a limiting ring 2 is fixedly installed on one end of the positioning rod, the limiting ring 1 is located on the outer side of the cavity disk, and the limiting ring 2 is located at a position on the side of the limiting ring 1 away from the adjusting disk, and a rotating shaft 1 is provided inside the cavity disk, and the rotating shaft 1 is rotatably connected to the cavity disk Then, a rotating handle is fixedly installed at one end of the rotating shaft, and a tooth groove 1 is opened on the side of the adjusting disk close to the limit ring 2. The rotating shaft 1 is meshed with the tooth groove 1. When the positioning assembly needs to be adjusted accordingly according to the size of the brake disc, the rotating handle is turned to drive the rotating shaft 1 to rotate. Since the rotating shaft 1 is in meshing state with the tooth groove 1, the adjusting disk is driven to rotate, and the positioning rod will respond to the curvature change of the arc groove by moving horizontally in the straight groove, so that it can be adjusted at any time according to the size of the brake disc, so as to meet the positioning of brake discs of different specifications and expand the scope of use.

[0010] Furthermore, the driving mechanism includes a servo motor, which is fixedly connected to the air storage component. A rotating shaft 2 is fixedly installed on the output end of the servo motor. A tooth groove 2 is provided on one side of the cavity disk. The rotating shaft 2 is meshed with the tooth groove 2. The rotating shaft 2 is driven to rotate by the servo motor. Since the rotating shaft 2 is in meshing state with the tooth groove 2, the positioning component as a whole is driven to drive the brake disc to rotate faster to achieve the required speed requirement.

[0011] Furthermore, the clamping part includes a threaded cap, and multiple groups of U-shaped parts are fixedly installed on the outside of the threaded cap. The multiple groups of U-shaped parts are distributed in a circle with the threaded cap as the axis. The multiple groups of U-shaped parts correspond one-to-one with the multiple groups of positioning rods. No matter how the positioning assembly is adjusted, the brake disc can be preliminarily positioned by simply matching the multiple groups of U-shaped parts with the multiple groups of positioning rods one-to-one and passing them through, which is convenient to operate.

[0012] Furthermore, a magnet is fixedly installed at the axis of the inner wall of the threaded cap, a threaded groove is provided on the outer side of the driven rod, and 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, thereby attracting the threaded cap to drive the U-shaped part gradually close to the brake disc. Since the resistance to rotation of the driven rod is greater than the friction force of the threaded connection between the threaded cap and the threaded groove at this time, the threaded cap will be threadedly connected to the driven rod until it comes into contact with the brake disc and continues to be threadedly connected, while pushing the brake disc close to the cavity disc, and finally clamping the brake disc between the positioning assembly and the clamping part to prevent the brake disc from moving left and right during rotation, affecting subsequent detection results.

[0013] Furthermore, a plurality of arc-shaped plates are fixedly mounted on one side of the threaded cap; The adaptive displacement component includes a cavity cylinder fixedly connected to the detection seat, a plurality of springs are fixedly installed inside the cavity cylinder, one end of the spring is fixedly installed with a ring plate slidingly connected to the inner wall of the cavity cylinder, a fixing ring fixedly connected to the detection seat is fixedly installed on the outside of the cavity cylinder, a piston cylinder with a fixing ring is fixedly installed on the outside of the cavity cylinder, the piston cylinder passes through the fixing ring, one end of the piston cylinder is connected to the interior of the cavity cylinder, a piston rod is slidingly installed on the inner side of the other end of the piston cylinder, one end of the piston rod is fixedly installed with a connecting piece, the connecting piece is connected to the brake caliper, the connecting piece is slidably installed on the inner side of the support frame, the support frame is fixedly connected to the detection seat, and the piston cylinder is movable. The plug cylinder is arranged through the support frame, and the piston cylinder is fixedly connected to the support frame. When the threaded cap approaches the brake disc, it pushes multiple arc plates at the same time, so that the arc plates enter the cavity cylinder and contact the ring plate. As it continues to go deeper, it pushes the ring plate to compress the stroke of the spring, and in 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, the piston rod is pushed to gradually extend out of the piston cylinder, and the piston rod pushes the connecting part and the brake caliper to move, and finally the brake caliper is moved to the outside of the brake disc, so that the subsequent brake caliper can brake the brake disc by friction.

[0014] Furthermore, a collar is fixedly mounted on the outside of the driven rod, and the collar is rotationally connected to the cavity tube. When the electromagnet and the magnet are attracted to each other, the collar is rotationally connected to the cavity tube, so that the driven rod does not move toward the clamping member, but the clamping member moves toward the driven rod, thereby enabling subsequent movement of the brake caliper.

[0015] Furthermore, a protrusion is symmetrically provided 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, and a cavity is opened inside the column; The gas storage assembly includes an air storage box, which is fixedly installed in the cavity, and two sets of air replenishing parts are fixedly installed on the upper end of the air storage box; The air supply component includes an intake pipe fixedly connected to the air storage box, the intake pipe is connected to the air storage box, a one-way valve is fixedly installed inside the intake pipe, an elastic angle plate is fixedly installed on the end of the intake pipe away from the air storage box, 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, and a one-way valve is installed through the interior of the elastic angle plate. The structural composition of the two sets of air supply components is exactly the same, and the composition of the elastic angle plate and the rubber plate forms a closed space inside. When the threaded cap approaches the driven rod and is threadedly connected, the two sets of elastic angle plates block the two sets of bumps, and the driven rod will not rotate at this time. Only after the cap is pressed tightly against the brake disc will it force the driven rod to rotate, and the driven rod will drive the protrusion to rotate, thereby squeezing the elastic angle plate to deform it. At the same time, the compression spring is compressed, and the gas in the space will enter the intake pipe through the one-way valve 1, and finally be stored in the air tank. When the protrusion 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 itself and the reset of the compression spring, the elastic angle plate and the rubber plate quickly return to their initial shapes. Since there is no gas in the space at this time, a siphon effect is formed on the one-way valve 2, causing the one-way valve 2 to start replenishing air. This cycle repeats until the gas in the air tank increases.

[0016] Furthermore, an outlet pipe is fixedly installed at the upper end of the air storage tank, an electromagnetic valve is fixedly installed in the process of the outlet pipe, an arc tube is fixedly installed at one end of the outlet pipe, and a plurality of exhaust heads are fixedly installed on the inner arc surface of the arc tube. After the detection is completed, the solenoid valve is opened to transport the gas stored in the air storage tank from the outlet pipe to the arc tube, and finally ejected from the plurality of exhaust heads, thereby effectively accelerating the cooling speed of the brake disc and brake caliper, thereby shortening the waiting time and improving the detection efficiency.

[0017] Furthermore, a connecting plate is fixedly installed on the outer side of the column, a temperature sensor is fixedly installed on one end of the connecting plate, a pressure sensor is fixedly installed on one end of the connecting plate, and a displacement sensor is fixedly installed on one end of the connecting plate. When the threaded cap pushes the brake disc close to the cavity disc, the brake disc will contact the temperature sensor, pressure sensor and displacement sensor at the same time and produce a certain amount of extrusion. When the brake disc stops completely, the temperature, wear and braking distance of the brake disc during braking can be recorded and analyzed through the temperature sensor, pressure sensor and displacement sensor, so that personnel can intuitively understand the performance of the brake.

[0018] Compared with the prior art, the beneficial effects of the present invention include: first, the brake caliper is connected and fixed to the adaptive displacement component, and then the positioning component is adjusted accordingly according to the size of the brake disc, and the brake disc and the clamping member are sequentially sleeved on the outside of the positioning component, and the driving mechanism is started to drive the positioning component and the brake disc and the clamping member on its outside to rotate, so that the clamping member gradually approaches the brake disc and pushes it to abut against the positioning component, and then the brake disc is fixedly clamped between the positioning component and the clamping member, effectively improving the stability of the brake disc during rotation, avoiding shaking that affects subsequent detection parameters, and at the same time, the clamping member is connected to the driven rod and drives it to rotate synchronously, so that gas gradually accumulates inside the gas storage component, and the clamping member will also squeeze the gas inside the adaptive displacement component in the process of approaching the brake disc. , forcing the adaptive displacement component to push the brake caliper to the required working position to facilitate subsequent braking operations. When the brake disc reaches a certain speed, the driving mechanism stops driving, and the brake caliper starts working to brake the brake disc that continues to rotate by inertia until the brake disc completely stops rotating. The temperature, wear, number of laps and other test items of the brake disc after rotating by inertia are recorded and analyzed through the detection seat to reflect the braking performance of the brake disc and brake caliper and whether they meet the qualified standards. Then the air storage component discharges the previously stored gas and blows it to the brake disc and brake caliper, thereby effectively accelerating the cooling speed, thereby shortening the waiting time and improving the detection efficiency. After multiple tests at different speeds are completed, the clamping part will automatically move away from the brake disc through reverse driving of the driving mechanism and can be quickly disassembled. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The disclosure of the present 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 the present invention. In the accompanying drawings, the same reference numerals are used to refer to the same components. Among them: Figure 1 The schematic diagram shows the overall structure of an embodiment of the present invention. Figure 1 , Figure 2 The schematic diagram shows the overall structure of an embodiment of the present invention. Figure 2 , Figure 3 The following schematically shows the structure of the detection device according to one embodiment of the present invention. Figure 4 The following schematically shows an exploded view of the structure of the detection device body according to one embodiment of the present invention. Figure 5 The figure schematically shows a cross-sectional view of the structure of the detection base proposed in accordance with one embodiment of the present invention. Figure 6The schematic diagram of the structure of the gas storage assembly according to one embodiment of the present invention is shown. Figure 7 The figure schematically shows a cross-sectional view of the structure of an adaptive displacement assembly proposed according to one embodiment of the present invention. Figure 8 Schematically shows a structural cross-sectional view of a driven rod according to one embodiment of the present invention. Figure 9 The following schematically shows an exploded view of the structure of a positioning assembly according to one embodiment of the present invention. Figure 10 The following schematically shows an exploded view of the structure of a positioning assembly according to one embodiment of the present invention. Figure 11 The figure schematically shows a cross-sectional view of the structure of a clamping member according to one embodiment of the present invention. Figure 12 The figure schematically shows the structure of a driving mechanism according to one embodiment of the present invention.

[0020] : Numbers in the figure: 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 storage box; 322. air supply component; 3221. intake pipe; 3222. one-way valve 1; 3223. elastic angle plate; 3224. compression spring; 3225. one-way valve 2; 3226. rubber plate; 323. outlet pipe; 324. solenoid valve; 325. arc 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. Connecting part;34. Follower rod;341. Threaded groove;342. Electromagnet;343. Ring;344. Bump;35. Positioning assembly;351. Cavity disk;3511. Straight groove;3512. Tooth groove two;352. Rotating shaft one;3521. Rotating handle;353. Adjusting disk;3531. Arc groove;3532. Tooth groove one;354. Positioning rod;3541. Limiting ring one;3542. Limiting ring two;36. Clamping part;361. Threaded cap;362. Magnet;363. U-shaped part;364. Arc plate;37. Driving mechanism;371. Servo motor;372. Rotating shaft two. DETAILED DESCRIPTION

[0021] It is easy to understand that according to the technical solution of the present invention, without changing the essential spirit of the present invention, a person skilled in the art can propose a variety of interchangeable structural modes and implementation modes. Therefore, the following specific embodiments and drawings are only exemplary descriptions of the technical solution of the present invention and should not be regarded as the entire invention or as a limitation or restriction of the technical solution of the present invention.

[0022] In order to further understand the content of the present invention, the present invention is described in detail with reference to the accompanying drawings.

[0023] According to one embodiment of the present invention, Figure 1-4 FIG. 1 shows an electric vehicle brake performance testing device, comprising a testing device body 3 , a brake disc 1 being sleeved on the outer side of the testing device body 3 , and a brake caliper 2 being installed on the outer side of the testing device body 3 ; The detection device body 3 includes a detection seat 31, an air storage component 32 is provided inside the detection seat 31, a driving 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 provided 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 the brake disc is adjusted according to the rotation of the brake caliper 2. 1, and the positioning assembly 35 is adjusted accordingly, and the brake disc 1 and the clamping member 36 are sequentially sleeved on the outside of the positioning assembly 35. By starting the driving mechanism 37, the positioning assembly 35 and the brake disc 1 and the clamping member 36 on the outside thereof are driven to rotate, so that the clamping member 36 gradually approaches the brake disc 1 and pushes it to abut against the positioning assembly 35, thereby fixing the brake disc 1 between the positioning assembly 35 and the clamping member 36, effectively improving the stability of the brake disc 1 during rotation, avoiding shaking that affects subsequent detection parameters, and 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 assembly 32. As the clamping member 36 approaches the brake disc 1, it also squeezes the gas inside the adaptive displacement assembly 33, forcing the adaptive displacement assembly 33 to push the brake caliper 2 to the desired working position, facilitating subsequent braking operations. When the brake disc 1 reaches a certain speed, the driving 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 test base 31 records and analyzes various test items such as temperature, wear, and number of revolutions of the brake disc 1 after rotating by inertia to reflect whether the braking performance of the brake disc 1 and the brake caliper 2 meets the qualified standards. The gas storage assembly 32 then discharges the previously stored gas and blows it toward the brake disc 1 and the brake caliper 2, thereby effectively accelerating the cooling rate, thereby shortening the waiting time and improving the testing efficiency. After multiple tests at different speeds are completed, the driving mechanism 37 drives in the opposite direction, and the clamping member 36 automatically moves away from the brake disc 1, allowing for quick removal.

[0024] According to one embodiment of the present invention, Figure 9-10As shown, the positioning assembly 35 includes a cavity disk 351, and one side of the cavity disk 351 is provided with multiple groups of straight grooves 3511, and an adjusting disk 353 is rotatably installed inside the cavity disk 351. The interior of the adjusting disk 353 is provided with multiple groups of arc grooves 3531, and positioning rods 354 are movably installed on the inner sides of the multiple groups of straight grooves 3511 and the multiple groups of arc grooves 3531. The structures of the multiple groups of positioning rods 354 are the same. A limiting ring 1 3541 is fixedly installed on the outer side of the positioning rod 354, and a limiting ring 2 3542 is fixedly installed on one end of the positioning rod 354. The limiting ring 1 3541 is located on the outer side of the cavity disk 351, and the limiting ring 2 3542 is located at a position on the side of the limiting ring 1 3541 away from the adjusting disk 353. A rotating shaft 1 352 is provided inside the cavity disk 351, and the rotating shaft 1 352 is provided. The first cam 352 is engaged with the first cam 3532 and the second cam 3533 is engaged with the first cam 3532. When the positioning assembly 35 needs to be adjusted according to the size of the brake disc 1, the first cam 352 is driven to rotate by rotating the first cam 352. Since the first cam 352 is engaged with the first cam 3532, the adjusting disc 353 is driven to rotate. The positioning rod 354 will respond to the curvature change of the arc groove 3531 by moving horizontally in the straight groove 3511, so that it can be adjusted at any time according to the size of the brake disc 1, so as to meet the positioning needs of brake discs 1 of different specifications and expand the scope of use.

[0025] According to one embodiment of the present invention, Figure 10 、 Figure 12 As shown, the driving mechanism 37 includes a servo motor 371, which is fixedly connected to the air storage component 32. The output end of the servo motor 371 is fixedly installed with a rotating shaft 2 372. A tooth groove 2 3512 is provided on one side of the cavity disk 351. The rotating shaft 2 372 is meshed with the tooth groove 2 3512. The rotating shaft 2 372 is driven to rotate by the servo motor 371. Since the rotating shaft 2 372 is in a meshing state with the tooth groove 2 3512, the positioning component 35 is driven as a whole to drive the brake disc 1 to rotate faster to achieve the required speed requirement.

[0026] According to one embodiment of the present invention, Figure 11 As shown, the clamping member 36 includes a threaded cap 361, and multiple groups of U-shaped members 363 are fixedly installed on the outer side of the threaded cap 361. The multiple groups of U-shaped members 363 are distributed in a circle with the threaded cap 361 as the axis. The multiple groups of U-shaped members 363 correspond one-to-one with the multiple groups of positioning rods 354. No matter how the positioning assembly 35 is adjusted, it is only necessary to match the multiple groups of U-shaped members 363 with the multiple groups of positioning rods 354 one-to-one and pass through them to perform preliminary positioning of the brake disc 1, which is convenient to operate.

[0027] According to one embodiment of the present invention, Figure 8 、 Figure 11 As shown, a magnet 362 is fixedly installed at the axis center of the inner wall of the threaded cap 361, a threaded groove 341 is provided on the outer side of the driven rod 34, and an electromagnet 342 is fixedly installed inside one end of the driven rod 34. When the servo motor 371 drives the positioning assembly 35 to rotate as a whole, the electromagnet 342 is energized, thereby generating a magnetic field that attracts the magnet 362, thereby attracting the threaded cap 361 to drive the U-shaped part 363 gradually approaching the brake disc 1. Since the resistance to rotation of the driven rod 34 at this time is greater than the friction 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, while pushing the brake disc 1 close to the cavity disc 351, and finally clamping the brake disc 1 between the positioning assembly 35 and the clamping member 36 to prevent the brake disc 1 from moving left and right during rotation, affecting subsequent detection results.

[0028] According to one embodiment of the present invention, Figure 7 、 Figure 11 As shown, a plurality of arc-shaped plates 364 are fixedly mounted on one side of the threaded cap 361; The adaptive displacement assembly 33 includes a cavity cylinder 331 fixedly connected to the detection seat 31, a plurality of springs 333 are fixedly installed inside the cavity cylinder 331, one end of the spring 333 is fixedly installed with a ring plate 334 that is slidably connected to the inner wall of the cavity cylinder 331, a fixing ring 332 that is fixedly connected to the detection seat 31 is fixedly installed on the outside of the cavity cylinder 331, a piston cylinder 335 with the fixing ring 332 fixedly installed on the outside of the cavity cylinder 331, the piston cylinder 335 passes through the fixing ring 332, one end of the piston cylinder 335 is connected to the interior of the cavity cylinder 331, a piston rod 337 is slidably installed on the inner side of the other end of the piston cylinder 335, a connecting piece 338 is fixedly installed on one end of the piston rod 337, the connecting piece 338 is connected to the brake caliper 2, the connecting piece 338 is slidably installed on the inner side of the support frame 336, and the support frame 336 is connected to the detection seat 31 is fixedly connected, the piston cylinder 335 is set through the support frame 336, the piston cylinder 335 is fixedly connected to the support frame 336, and the threaded cap 361 pushes multiple arc plates 364 at the same time in the process of approaching the brake disc 1, so that the arc plates 364 enter the cavity cylinder 331 and contact the ring plate 334. As they continue to go deeper, the ring plate 334 is pushed to compress the stroke of the spring 333, and during the compression process, the gas between the cavity cylinder 331 and the ring plate 334 is squeezed into the piston cylinder 335. As the amount of gas inside the piston cylinder 335 continues to increase, the piston rod 337 is pushed to gradually extend out of the piston cylinder 335, and the piston rod 337 pushes the connecting piece 338 and the brake caliper 2 to move, and finally the brake caliper 2 is moved to the outside of the brake disc 1, so that the subsequent brake caliper 2 relies on friction to brake the brake disc 1.

[0029] According to one embodiment of the present invention, Figure 7-8 It is shown that a collar 343 is fixedly installed on the outside of the driven rod 34, and the collar 343 is rotatably connected to the cavity tube 331. When the electromagnet 342 and the magnet 362 are attracted to each other, the collar 343 is rotatably connected to the cavity tube 331, so that the driven rod 34 will not move toward the clamping member 36, but the clamping member 36 will move toward the driven rod 34, thereby enabling subsequent movement of the brake caliper 2.

[0030] According to one embodiment of the present invention, Figure 5-6 、 Figure 8 As shown, a protrusion 344 is symmetrically provided on the outer side of the other end of the driven rod 34, and the protrusion 344 is fixedly connected to the driven rod 34. The detection base 31 includes a column 311, and a cavity 3111 is opened inside the column 311; The gas storage assembly 32 includes an air storage box 321, which is fixedly installed in the cavity 3111. Two sets of air replenishing components 322 are fixedly installed on the upper end of the air storage box 321; The air supply component 322 includes an air intake pipe 3221 fixedly connected to the air storage box 321, the air intake pipe 3221 is connected to the air storage box 321, a one-way valve 1 3222 is fixedly installed inside the air intake pipe 3221, an elastic angle plate 3223 is fixedly installed on the end of the air intake pipe 3221 away from the air storage box 321, a rubber plate 3226 is fixedly installed at the connection of the elastic angle plate 3223, a compression spring 3224 is fixedly installed on the inner side of the elastic angle plate 3223, and a one-way valve 2 3225 is installed through the elastic angle plate 3223. The structures of the two sets of air supply components 322 are exactly the same. The elastic angle plate 3223 and the rubber plate 3226 form a closed space inside. When the threaded cap 361 is close to the driven rod 34 and threadedly connected, the two sets of elastic angle plates 3223 block the two sets of protrusions 344. At this time, the driven rod 3 4 will not rotate. Only when the threaded cap 361 is pressed against the brake disc 1 will the driven rod 34 be forced to rotate, and the driven rod 34 in turn drives the protrusion 344 to rotate, thereby squeezing the elastic angle plate 3223 to deform it. At the same time, the compression spring 3224 is compressed, and the gas in the space will enter the intake pipe 3221 through the one-way valve 1 3222 and eventually be stored in the air storage tank 321. When the protrusion 344 rotates to a certain angle, it stops squeezing the elastic angle plate 3223. At this time, relying on the shape memory of the elastic angle plate 3223 itself and the reset of the compression spring 3224, the elastic angle plate 3223 and the rubber plate 3226 quickly return to their initial shapes. Since there is no gas in the space at this time, a siphon effect is formed on the one-way valve 2 3225, causing the one-way valve 2 3225 to start replenishing air. This reciprocating process increases the gas in the air storage tank 321.

[0031] According to one embodiment of the present invention, Figure 6As shown, an outlet pipe 323 is fixedly installed at the upper end of the air storage tank 321, and an electromagnetic valve 324 is fixedly installed along the path of the outlet pipe 323. An arc tube 325 is fixedly installed at one end of the outlet pipe 323, and a plurality of exhaust heads 326 are fixedly installed on the inner arc surface of the arc tube 325. After the inspection is completed, the solenoid valve 324 is opened to transport the gas stored in the air storage tank 321 from the outlet pipe 323 to the arc tube 325, and finally ejected from the plurality of 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 inspection efficiency.

[0032] According to one embodiment of the present invention, Figure 5 It is shown that 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 contact the temperature sensor 314, the pressure sensor 315 and the displacement sensor 312 at the same time and produce a certain amount of extrusion. 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 through the temperature sensor 314, the pressure sensor 315 and the displacement sensor 312, so that personnel can intuitively understand the performance of the brake.

[0033] In this embodiment, the brake caliper 2 is first connected and fixed to the adaptive displacement component 33, and then the positioning component 35 is adjusted accordingly according to the size of the brake disc 1, and the brake disc 1 and the clamping member 36 are sequentially sleeved on the outside of the positioning component 35, and the driving mechanism 37 is started to drive the positioning component 35 and the brake disc 1 and the clamping member 36 on its outside to rotate, so that the clamping member 36 gradually approaches the brake disc 1 and pushes it to abut against the positioning component 35, and then the brake disc 1 is fixedly clamped between the positioning component 35 and the clamping member 36, effectively improving the stability of the brake disc 1 during rotation, avoiding shaking that affects subsequent detection parameters, and at the same time, the clamping member 36 is connected to the driven rod 34 and drives it to rotate synchronously, so that gas gradually accumulates inside the gas storage component 32, and the clamping member 36 will also generate gas inside the adaptive displacement component 33 in the process of approaching the brake disc 1. The self-adaptive displacement component 33 is squeezed and forced to push the brake caliper 2 to the required working position to facilitate subsequent braking operations. When the brake disc 1 reaches a certain speed, the driving 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 temperature, wear, number of laps and other test items of the brake disc 1 after rotating by inertia are recorded and analyzed by the detection seat 31 to reflect whether the braking performance of the brake disc 1 and the brake caliper 2 meets the qualified standards. Then the air storage component 32 discharges the previously stored gas and blows it to the brake disc 1 and the brake caliper 2, thereby effectively accelerating the cooling speed, thereby shortening the waiting time and improving the detection efficiency. After multiple tests at different speeds are completed, the clamping part 36 will automatically move away from the brake disc 1 through reverse driving of the driving mechanism 37 and can be quickly disassembled.

[0034] The technical scope of the present invention is not limited to the contents of the above description. Those skilled in the art can make various deformations and modifications to the above embodiments without departing from the technical concept of the present invention, and these deformations and modifications should all fall within the protection scope of the present invention.

Claims

1. An electric vehicle brake performance detection device, characterized in that: It comprises a detection device body (3), a brake disc (1) is sleeved on the outer side of the detection device body (3), and a brake caliper (2) is installed on the outer side of the detection device body (3); The detection device body (3) comprises a detection seat (31), an air storage assembly (32) is provided inside the detection seat (31), a driving mechanism (37) is fixedly installed on the upper end of the detection seat (31), an adaptive displacement assembly (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 assembly (33), a positioning assembly (35) is rotatably installed on the side of the adaptive displacement assembly (33) away from the detection seat (31), and a clamping member (36) is sleeved on the outer side of the positioning assembly (35).

2. The electric vehicle brake performance detection device according to claim 1, characterized in that: The positioning assembly (35) includes a cavity disk (351), one side of the cavity disk (351) is provided with multiple groups of straight grooves (3511), an adjusting disk (353) is rotatably installed inside the cavity disk (351), and multiple groups of arc grooves (3531) are provided inside the adjusting disk (353), and positioning rods (354) are movably installed on the inner sides of the multiple groups of straight grooves (3511) and the multiple groups of arc grooves (3531), and the multiple groups of positioning rods (354) have the same structural composition, and the outer side of the positioning rod (354) is fixedly provided with a limiting ring 1 (3541), and one end of the positioning rod (354) is fixedly provided with a limiting ring 2 (3541). 542), the limiting ring 1 (3541) is located on the outside of the cavity disk (351), the limiting ring 2 (3542) is located at a position of the limiting ring 1 (3541) away from the side of the adjusting disk (353), the cavity disk (351) is provided with a rotating shaft 1 (352) running through the interior of the cavity disk (351), the rotating shaft 1 (352) is rotatably connected to the cavity disk (351), one end of the rotating shaft 1 (352) is fixedly mounted with a rotating handle (3521), the adjusting disk (353) is provided with a tooth groove 1 (3532) on the side close to the limiting ring 2 (3542), and the rotating shaft 1 (352) is meshedly connected to the tooth groove 1 (3532).

3. The electric vehicle brake performance detection device according to claim 2, characterized in that: The driving mechanism (37) includes a servo motor (371), the servo motor (371) is fixedly connected to the gas storage assembly (32), and a second rotating shaft (372) is fixedly installed at the output end of the servo motor (371). A second tooth groove (3512) is provided on one side of the cavity disk (351), and the second rotating shaft (372) is meshedly connected with the second tooth groove (3512).

4. The electric vehicle brake performance detection device according to claim 2, characterized in that: The clamping member (36) includes a threaded cap (361), and multiple groups of U-shaped members (363) are fixedly installed on the outer side of the threaded cap (361). The multiple groups of U-shaped members (363) are distributed in a circle with the threaded cap (361) as the axis. The multiple groups of U-shaped members (363) correspond one-to-one to the multiple groups of positioning rods (354).

5. The electric vehicle brake performance detection device according to claim 4, characterized in that: A magnet (362) is fixedly mounted on the axis of the inner wall of the threaded cap (361), a threaded groove (341) is provided on the outer side of the driven rod (34), and an electromagnet (342) is fixedly mounted inside one end of the driven rod (34).

6. The electric vehicle brake performance detection device according to claim 4, characterized in that: A plurality of arc-shaped plates (364) are fixedly mounted on one side of the threaded cap (361); The adaptive displacement assembly (33) includes a cavity cylinder (331) fixedly connected to the detection seat (31), a plurality of springs (333) are fixedly installed inside the cavity cylinder (331), one end of the spring (333) is fixedly installed with a ring plate (334) slidingly connected to the inner wall of the cavity cylinder (331), the outer side of the cavity cylinder (331) is fixedly installed with a fixing ring (332) fixedly connected to the detection seat (31), the outer side of the cavity cylinder (331) is fixedly installed with a piston cylinder (335) of the fixing ring (332), and the piston cylinder (335) passes through the fixing ring (332). One end of the piston cylinder (335) is connected to the interior of the cavity cylinder (331), and a piston rod (337) is slidably installed on the inner side of the other end of the piston cylinder (335). A connecting piece (338) is fixedly installed on one end of the piston rod (337). The connecting piece (338) is connected to the brake caliper (2). The connecting piece (338) is slidably installed on the inner side of the support frame (336). The support frame (336) is fixedly connected to the detection seat (31). The piston cylinder (335) is arranged to pass through the support frame (336), and the piston cylinder (335) is fixedly connected to the support frame (336).

7. The electric vehicle brake performance detection device according to claim 6, characterized in that: A collar (343) is fixedly mounted on the outer side of the driven rod (34), and the collar (343) is rotatably connected to the cavity cylinder (331).

8. The electric vehicle brake performance detection device according to claim 1, characterized in that: A protrusion (344) is symmetrically provided on the outer side of the other end of the driven rod (34), and the protrusion (344) is fixedly connected to the driven rod (34). The detection seat (31) includes a column (311), and a cavity (3111) is provided inside the column (311); The gas storage assembly (32) includes an air storage box (321), the air storage box (321) is fixedly installed in the cavity (3111), and two groups of air replenishing components (322) are fixedly installed on the upper end of the air storage box (321); The air supply component (322) comprises an air intake pipe (3221) fixedly connected to the air storage box (321), the air intake pipe (3221) being in communication with the air storage box (321), a one-way valve (3222) being fixedly installed inside the air intake pipe (3221), an elastic angle plate (3223) being fixedly installed at one end of the air intake pipe (3221) away from the air storage box (321), a rubber plate (3226) being fixedly installed at the connection of the elastic angle plate (3223), a compression spring (3224) being fixedly installed on the inner side of the elastic angle plate (3223), and a one-way valve (3225) being installed through the interior of the elastic angle plate (3223), and the two sets of air supply components (322) have exactly the same structural composition.

9. The electric vehicle brake performance detection device according to claim 8, characterized in that: An air outlet pipe (323) is fixedly mounted on the upper end of the air storage box (321), an electromagnetic valve (324) is fixedly mounted on the path of the air outlet pipe (323), an arc-shaped pipe (325) is fixedly mounted on one end of the air outlet pipe (323), and a plurality of exhaust heads (326) are fixedly mounted on the inner arc surface of the arc-shaped pipe (325).

10. The electric vehicle brake performance detection device according to claim 8, characterized in that: A connecting plate (313) is fixedly mounted on the outer side of the column (311), a temperature sensor (314) is fixedly mounted on one end of the connecting plate (313), a pressure sensor (315) is fixedly mounted on one end of the connecting plate (313), and a displacement sensor (312) is fixedly mounted on one end of the connecting plate (313).

Images