A brake test bench

Abstract

The present invention relates to the technical field of brakes, and specifically discloses a brake test bench, comprising a frame, a test box, a fixing mechanism, a mud injection mechanism and a cleaning mechanism, wherein a brake caliper and a driving member 1 are installed in the test box, the fixing mechanism is used to fix a brake disc, the fixing mechanism can move along the length direction of the frame to push the brake disc into a test cavity provided in the test box, a driving member 2 is connected to the fixing mechanism, the mud injection mechanism is used to inject mud into the test cavity, the cleaning mechanism comprises a driving assembly, a cleaning roller for cleaning liquid mud, and a scraper 1 for cleaning solid mud; the present invention can simulate the situation where mud adheres to the brake disc, which is conducive to evaluating the influence of mud on braking performance under different conditions, and can clean the mud adhered to the brake disc.

Description

Technical Field

[0001] The invention relates to the technical field of brakes, and in particular to a brake test bench. Background Art

[0002] Brakes are key components in automobiles used to slow down or stop vehicle movement. Their basic function is to convert the vehicle's kinetic energy into heat energy through friction, thereby achieving deceleration or stopping. The working principle of brakes is based on the interaction between non-rotating elements connected to the body or frame and rotating elements connected to the wheels or drive shafts. When the driver steps on the brake pedal, the brakes generate braking torque to prevent the wheels from rotating or turning, ensuring that the vehicle can slow down or stop safely as the driver wishes. Therefore, in order to ensure the safe operation of the vehicle under various working conditions, it is particularly critical to conduct comprehensive and accurate testing of the braking performance of the brakes.

[0003] The patent document with authorization announcement number CN117871127B discloses a brake assembly braking performance testing device, including a testing body and a supporting and fixing component arranged on the testing body, and also including an anti-ice and snow accumulation performance testing mechanism and an anti-wetting grease effect testing mechanism. The anti-ice and snow accumulation performance testing mechanism is arranged in the testing body, and the anti-wetting grease effect testing mechanism is arranged on one side inside the testing body. The anti-ice and snow accumulation performance testing mechanism includes an inertial simulation braking detection component, a water droplet spraying component and a test disc surface freezing component. The anti-wetting grease effect testing mechanism includes a heated moisture adhesion component and a floating grease diffusion component. The patent simulates the situation of rainwater freezing on the brake disc in winter through the anti-ice and snow accumulation performance testing mechanism, so as to evaluate the braking performance of the brake when the brake disc is frozen. Through the anti-wetting grease effect testing mechanism, steam and atomized grease are introduced to simulate the situation of moisture and grease adhering to the surface of the brake disc, so as to detect the influence of grease factors on the braking effect.

[0004] The detection equipment provided by the above patent document can detect the impact of extreme weather conditions on the braking effect of the brake disc. However, in mobile equipment in mines, the presence of wind, sand and soil usually causes a large amount of mud to adhere to the brake disc, which reduces the braking effect and even causes brake failure. Therefore, it is necessary to provide a detection equipment to detect the impact of mud on braking performance under various weather conditions. Summary of the invention

[0005] The present invention provides a brake test bench, aiming to solve the problem that the detection equipment in the related art does not simulate the situation that mud adheres to the surface of the brake disc, and therefore cannot detect the influence of the mud on the braking performance under various weather conditions.

[0006] A brake test bench of the present invention comprises a frame, a test box, a fixing mechanism, a mud injection mechanism and a cleaning mechanism;

[0007] The test box is arranged on the frame, and a brake caliper and a driving member 1 are installed in the test box, wherein the driving member 1 is connected to the brake caliper and is used to drive the brake caliper to move downward;

[0008] The fixing mechanism is arranged on the frame and used to fix the brake disc. The fixing mechanism can move along the length direction of the frame to push the brake disc into the test cavity provided in the test box. The fixing mechanism is connected to a driving member 2 for driving the brake disc to rotate.

[0009] The mud injection mechanism is arranged on the frame and is used to inject mud into the test cavity;

[0010] The cleaning mechanism is arranged in the test box, and the cleaning mechanism includes a driving component, a cleaning roller for cleaning liquid mud, and a scraper for cleaning solid mud. The peripheral side of the cleaning roller and the end of the scraper can both contact the friction surface of the brake disc. The driving component can drive the cleaning roller or the scraper to clean the friction surface of the brake disc according to the mud attached to the brake disc.

[0011] It can simulate the situation of mud adhering to the brake disc, which is helpful to evaluate the influence of mud on braking performance under different conditions, and can also clean the mud adhering to the brake disc.

[0012] Preferably, an arc plate 1 and two mounting plates are provided in the test box, and the two mounting plates are symmetrically arranged along the length direction of the frame. Arc plate 1 is connected to the side of the mounting plate away from the fixing mechanism, and arc plate 2 is connected to the fixing mechanism. When the fixing mechanism approaches the test box, arc plate 2 can be embedded between the two mounting plates to form a test cavity by arc plate 1, arc plate 2 and the two mounting plates.

[0013] By setting up the test chamber, the injected mud can be stored so as to simulate the situation that the mud adheres to the brake disc through the rotation of the brake disc.

[0014] Preferably, arc strips are provided on the opposite arc surfaces of arc plate 1 and arc plate 2, and the arc strips can be inserted into the ventilation duct provided on the brake disc, and during the test, the arc strips can close the ventilation duct in the test chamber.

[0015] During the test, the arc-shaped strips can be used to close the ventilation duct portion within the test chamber to prevent mud from entering the ventilation duct, which is beneficial for subsequent cleaning of the brake disc.

[0016] Preferably, the fixing mechanism includes a movable frame and a rotating shaft. The movable frame slides with the frame along the length direction of the frame. Two fixed plates are provided on the movable frame, and there is a space for installing a brake disc between the two fixed plates. The rotating shaft is arranged along the width direction of the frame and is rotatably connected to the two fixed plates. The driving member 2 is arranged on one of the fixed plates, and the output end is connected to the rotating shaft.

[0017] Preferably, the mud injection mechanism includes a mud storage device disposed at the lower end of the frame, and a mud pump for pumping out the mud inside the mud storage device. The frame is provided with a through port, and the interior of the mud storage device is connected to the test chamber provided in the test box through the through port.

[0018] Preferably, the cleaning mechanism is provided in two groups and symmetrically mounted on two mounting plates, a slide groove is provided on the frame along its width direction, a slider is provided in the slide groove for sliding, and a spring is connected between the slider and the frame, the cleaning roller is rotatably connected to the slider through a torsion spring, and the driving assembly is provided between the cleaning roller and the scraper on the corresponding side, for driving the cleaning roller and the scraper to move in the opposite direction along the width direction of the frame.

[0019] Preferably, the driving assembly includes a sliding rod, a driving member three, a push rod one and a push rod two. The sliding rod slides with the mounting plate along the width direction of the frame. A spring two is connected between the sliding rod and the scraper one. The driving member three is used to drive the sliding rod to move along the width direction of the frame. The push rod one is slidably arranged along the width direction of the frame and is connected with a spring four between the sliding rod and the mounting plate. The push rod two is slidably arranged along the length direction of the frame and is connected with a spring five between the mounting plate. Grooves are respectively provided on the push rod one and the scraper one. The end of the push rod two can be inserted into the groove on the push rod one or the scraper one. The end of the push rod two toward the push rod one is in the shape of an inclined surface, and the inclined surface gradually inclines toward the outside of the frame in the direction away from the test box.

[0020] Preferably, the driving member three is a driving rod, which is connected to the moving frame and has an inclined surface at one end facing the test box. The inclined surface gradually tilts toward the middle of the frame along the direction approaching the moving frame. During the movement of the moving frame toward the test box, the sliding rod can contact the inclined surface on the driving rod, and a spring three is connected between the sliding rod and the mounting plate to drive the sliding rod to reset.

[0021] Preferably, an end of the scraper facing the brake disc can be in contact with the circumferential side of the cleaning roller.

[0022] During the process of cleaning the brake disc by the cleaning roller, the mud on the cleaning roller can be scraped off by the scraper pair, thereby ensuring the cleaning effect of the cleaning roller on the brake disc.

[0023] Preferably, the cleaning mechanism also includes a scraper 2 for cleaning the circumferential side of the brake disc, the scraper 2 is arranged in the test box, and the end of the scraper 2 can contact the circumferential side of the brake disc, and a spring 6 is connected between the scraper 2 and the test box.

[0024] When the brake disc is pulled out of the test box, the circumference of the brake disc can be cleaned by scraper 2 to further ensure the cleaning effect.

[0025] The beneficial effects of the present invention are:

[0026] 1. The present invention can simulate the situation where mud adheres to the brake disc through the cooperation of the test box, the fixing mechanism and the mud injection mechanism, and can also cool down or heat up the test box to make the mud frozen or hardened, so as to evaluate the influence of mud on the braking performance of the brake under different conditions and to understand the actual working condition of the automobile brake in the mud environment.

[0027] 2. The present invention is provided with a cleaning mechanism, which can drive a cleaning roller or a pair of scrapers to clean the friction surface of the brake disc through a driving component according to the mud attached to the brake disc after the test is completed, and can also clean the peripheral side of the brake disc through a pair of scrapers to ensure the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0029] Figure 2 It is a schematic diagram of the state of the present invention when the brake disc is installed.

[0030] Figure 3 It is a structural schematic diagram of the fixing mechanism of the present invention.

[0031] Figure 4 It is a schematic structural diagram of the present invention cut along the longitudinal direction.

[0032] Figure 5 It is a schematic diagram of the assembly structure of the cleaning mechanism and the test box of the present invention.

[0033] Figure 6 The present invention Figure 5 Schematic diagram of the enlarged structure at point A in the middle.

[0034] Figure 7 It is a schematic diagram of the assembly structure of the cleaning roller, the scraper and the driving component of the present invention.

[0035] Figure 8 The present invention Figure 7 Schematic diagram of the enlarged structure at point B in the middle.

[0036] Reference numerals:

[0037] 1. Frame; 11. Through port; 12. Slideway; 2. Test chamber; 201. Test chamber; 21. Brake caliper; 22. Driving member 1; 23. Brake disc; 231. Ventilation duct; 24. Arc plate 1; 25. Mounting plate; 26. Arc plate 2; 27. Arc strip; 3. Moving frame; 301. Roller; 31. Driving member 2; 32. Rotating shaft; 33. Fixed plate; 34. Mud storage; 35. Mud pump; 41. Cleaning roller; 42. Scraper 1; 43. Sliding rod; 431. Spring 2; 432. Spring 3; 44. Push rod 1; 45. Push rod 2; 46. Driving rod; 47. Scraper 2; 471. Spring 6. DETAILED DESCRIPTION

[0038] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0039] like Figures 1 to 8 As shown, a brake test bench of the present invention comprises a frame 1, a test box 2, a fixing mechanism, a mud injection mechanism and a cleaning mechanism.

[0040] The test box 2 is arranged at the upper end of the frame 1, and a brake caliper 21 and a driving member 22 are installed in the test box 2. The driving member 22 is connected to the brake caliper 21 and is used to drive the brake caliper 21 to move downward so as to detect the braking performance of the brake disc 23 through the brake caliper 21. The fixing mechanism is arranged on the frame 1 and is used to fix the brake disc 23. The fixing mechanism can move along the length direction of the frame 1 to push the brake disc 23 into the test cavity 201 set in the test box 2. The fixing mechanism is connected to a driving member 31 for driving the brake disc 23 to rotate. The mud injection mechanism is arranged on the frame 1 and is used to inject mud into the test cavity 201.

[0041] Specifically, when in use, the brake disc 23 to be tested is fixed on the fixing mechanism, and the brake disc 23 is driven to move by the movement of the fixing mechanism, so as to push the brake disc 23 into the test chamber 201 provided in the test box 2, and the brake caliper 21 is driven to move downward by the driving member 1 22 until the brake caliper 21 can clamp the brake disc 23, and the brake disc 23 is driven to rotate by the driving member 2 31. At this time, the brake caliper 21 is started, so that the brake caliper 21 clamps the brake disc 23 for braking, so as to detect the braking effect of the brake; the mud injection mechanism is started, and mud is injected into the test chamber 201. As the brake disc 23 continues to rotate, the mud will adhere to the surface of the brake disc 23, and the brake caliper 21 is started at this time. Clamping the brake disc 23 for braking can simulate the situation where mud adheres to the brake disc 23, which is helpful to evaluate the influence of mud on braking performance; cooling the inside of the test box 2 to freeze the liquid mud adhered to the brake disc 23, and then starting the brake caliper 21 so that the brake caliper 21 clamps the brake disc 23 for braking, which can simulate the situation where mud freezes on the brake disc 23 in winter, which is helpful to evaluate the influence of fixed mud at low temperature on braking performance; heating the test box 2 to make the mud adhered to the brake disc 23 harden and crack, and then starting the brake caliper 21 so that the brake caliper 21 clamps the brake disc 23 for braking, which can simulate the situation where mud adheres to the brake disc 23 hardens and cracks in summer, which is helpful to evaluate the influence of solid mud at high temperature on braking performance.

[0042] In some embodiments, the fixing mechanism includes a moving frame 3 and a rotating shaft 32. The moving frame 3 slides with the frame 1 along the length direction of the frame 1. Two fixed plates 33 are provided on the moving frame 3, and there is a space for installing the brake disc 23 between the two fixed plates 33. The rotating shaft 32 is arranged along the width direction of the frame 1 and is rotatably connected to the two fixed plates 33. The driving member 31 is arranged on one of the fixed plates 33, and the output end is connected to the rotating shaft 32. The lower end of the moving frame 3 is provided with a roller 301 for easy movement.

[0043] Specifically, Figures 1 to 4 As shown, when installing the brake disc 23 that needs to be tested, the brake disc 23 is installed between two fixed plates 33 and sleeved on the outside of the rotating shaft 32 to fix the brake disc 23. At this time, the brake disc 23 can move synchronously with the movable frame 3 and can rotate synchronously with the rotating shaft 32.

[0044] In some embodiments, the mud injection mechanism includes a mud storage tank 34 disposed at the lower end of the frame 1, and a mud pump 35 for extracting the mud inside the mud storage tank 34 outward. A through port 11 is provided on the frame 1, and the interior of the mud storage tank 34 is connected to the test chamber 201 provided in the test box 2 through the through port 11.

[0045] Specifically, Figure 2 , Figure 4 and Figure 7 As shown, when mud needs to be injected into the test chamber 201, the mud pump 35 is started to pump out the mud in the mud storage 34, and the mud will enter the test chamber 201 set in the test box 2 through the opening 11, simulating the situation of mud adhering to the brake disc 23, so as to evaluate the influence of mud on braking performance under different conditions.

[0046] In some embodiments, an arc plate 24 and two mounting plates 25 are provided in the test box 2. The two mounting plates 25 are symmetrically arranged along the length direction of the frame 1. The arc plate 24 is connected to the side of the mounting plate 25 away from the fixing mechanism. The movable frame 3 is connected to the arc plate 26. When the fixing mechanism approaches the test box 2, the arc plate 26 can be embedded between the two mounting plates 25 to form a test chamber 201 by the arc plate 1 24, the arc plate 26 and the two mounting plates 25.

[0047] Specifically, Figures 2 to 7 As shown, through the movement of the movable frame 3, the arc plate 26 and the brake disc 23 fixed on the movable frame 3 can be driven to move synchronously. When the brake disc 23 is pushed into the test box 2, the arc plate 26 is just embedded between the two mounting plates 25. At this time, the test cavity 201 can be formed by the arc plate 1 24, the arc plate 26 and the two mounting plates 25, and the lower end of the brake disc 23 is located in the test cavity 201, so that when the subsequent mud injection mechanism injects mud into the test cavity 201, the mud can be stored in the test cavity 201, and the rotation of the brake disc 23 can simulate the situation where the mud adheres to the brake disc 23.

[0048] In some embodiments, arc strips 27 are provided on the arc surfaces opposite to each other of arc plate 1 24 and arc plate 2 26 . Arc strips 27 can be inserted into the ventilation duct 231 provided on the brake disc 23 . During the test, arc strips 27 can close the ventilation duct 231 in the test chamber 201 .

[0049] Specifically, Figures 2 to 8 As shown, when the brake disc 23 is installed on the outer side of the rotating shaft 32, the arc strip 27 on the arc plate 26 is just inserted into the ventilation duct 231 provided on the brake disc 23. Similarly, when the brake disc 23 is pushed into the test cavity 201 formed in the test box 2, the arc strip 27 on the arc plate 1 24 is also inserted into the ventilation duct 231 provided on the brake disc 23, and the arc strips 27 on the arc plate 1 24 and the arc plate 26 can completely close the ventilation duct 231 part in the test cavity 201, thereby preventing the mud in the test cavity 201 from entering the ventilation duct 231, thereby facilitating the subsequent cleaning of the brake disc 23.

[0050] The cleaning mechanism is arranged in the test box 2, and the cleaning mechanism includes a driving component, a cleaning roller 41 for cleaning liquid mud, and a scraper 42 for cleaning solid mud. The peripheral side of the cleaning roller 41 and the end of the scraper 42 can both contact the friction surface of the brake disc 23. The driving component can drive the cleaning roller 41 or the scraper 42 to clean the friction surface of the brake disc 23 according to the mud attached to the brake disc 23.

[0051] Specifically, Figures 2 to 8 As shown, after the test is completed, the movable frame 3 is moved away from the test box 2, driving the brake disc 23 to be pulled out from the test box 2. During this process, if the mud attached to the brake disc 23 is liquid mud, the cleaning roller 41 can be driven by the driving component to wipe the mud on the friction surface of the brake disc 23. If the mud attached to the brake disc 23 is solid mud, the scraper 42 can be driven by the driving component to scrape the mud on the friction surface of the brake disc 23. That is, the cleaning mechanism can drive the cleaning roller 41 or the scraper 42 to clean according to the mud attached to the brake disc 23 to ensure the cleaning effect.

[0052] In some embodiments, the cleaning mechanism is provided in two groups and symmetrically mounted on two mounting plates 25, for cleaning the two friction surfaces of the brake disc 23. A slide groove 12 is provided on the frame 1 along its width direction, a slider is provided in the slide groove 12 for sliding, and a spring is connected between the slider and the frame 1. The cleaning roller 41 is rotatably connected to the slider through a torsion spring. The driving assembly is provided between the cleaning roller 41 and the scraper 42 on the corresponding side, for driving the cleaning roller 41 and the scraper 42 to move in the opposite direction along the width direction of the frame 1.

[0053] Specifically, Figures 4 to 8As shown, in the initial state, the distance between the cleaning rollers 41 in the two groups of cleaning mechanisms is smaller than the distance between the scrapers 42 in the two groups of cleaning mechanisms, so that during the process of the brake disc 23 fixed on the moving frame 3 being pulled out from the test box 2, the peripheral side of the cleaning roller 41 can contact the friction surface of the brake disc 23, while the end of the scraper 42 cannot contact the brake disc 23. If the brake disc 23 is attached with liquid mud at this time, the friction surface of the brake disc 23 can be wiped by the cleaning roller 41, and during the cleaning process, the cleaning roller 41 can rotate relative to the slider to twist the torsion spring to store force, so as to improve the cleaning effect of the brake disc 23. When the brake disc 23 is completely pulled out from the test box 2, the cleaning roller 41 will quickly react under the action of the torsion spring. The cleaning roller 41 rotates in the direction of rotation to shake off the mud attached to the cleaning roller 41; if the brake disc 23 is attached with solid mud, the cleaning roller 41 is not enough to clean up the solid mud attached to the brake disc 23, and the cleaning roller 41 will be squeezed by the solid mud and move along the slide groove 12 to the outside of the frame 1, and the spring 1 will be compressed to accumulate force. At this time, under the action of the driving component, the scraper 42 can be driven to move in the reverse direction, so that the end of the scraper 42 contacts the friction surface of the brake disc 23, and the solid mud attached to the friction surface is scraped off. After the mud is cleaned, the cleaning roller 41 will be reset under the action of the spring 1, and the scraper 42 will be reset in the reverse direction under the action of the driving component, so that the cleaning mechanism returns to its initial state.

[0054] In some embodiments, the driving assembly includes a sliding rod 43, a driving member three, a push rod one 44 and a push rod two 45. The sliding rod 43 slides with the mounting plate 25 along the width direction of the frame 1. The driving member three is used to drive the sliding rod 43 to move along the width direction of the frame 1. In this embodiment, the driving member three is a driving rod 46, which is connected to the mobile frame 3 and is inclined at one end toward the test box 2. The inclined surface gradually inclines toward the middle of the frame 1 along the direction close to the mobile frame 3. In the process of the mobile frame 3 moving toward the test box 2, the sliding rod 43 can contact the inclined surface on the driving rod 46, and the sliding rod 43 and the scraper one 42 A spring 2 431 is connected between the push rod 44 and a spring 3 432 is connected between the push rod 44 and the mounting plate 25 for driving the sliding rod 43 to reset. The push rod 44 is slidably arranged along the width direction of the frame 1 and is connected to the mounting plate 25 with a spring 4. The push rod 45 is slidably arranged along the length direction of the frame 1 and is connected to the mounting plate 25 with a spring 5. Grooves are respectively provided on the push rod 44 and the scraper 42. The end of the push rod 45 can be inserted into the groove provided on the push rod 44 or the scraper 42. The end of the push rod 45 toward the push rod 44 is in an inclined shape, and the inclined surface gradually inclines toward the outside of the frame 1 in the direction away from the test box 2.

[0055] Specifically, Figures 3 to 8As shown, in the initial state, the distance between the cleaning rollers 41 in the two groups of cleaning mechanisms is smaller than the distance between the scrapers 42 in the two groups of cleaning mechanisms. At this time, the end of the push rod 245 facing the scraper 42 is stuck in the groove provided on the scraper 42. Through the movement of the mobile frame 3, the brake disc 23 is pushed into the test box 2, which will drive the driving rod 46 provided on the mobile frame 3 to move synchronously. When the sliding rod 43 contacts the driving rod 46, the sliding rod 43 will move toward the middle part of the frame 1 along the width direction of the frame 1 under the action of the inclined surface on the driving rod 46, and the spring 3 432 will be compressed to store force. Because the push rod 245 limits the scraper 42, the spring 2 431 is compressed. The cleaning roller 41 and the scraper 1 42 are still kept in the initial state. During the process of the brake disc 23 being separated from the test box 2 by the movement of the mobile frame 3, if the brake disc 23 is attached with liquid mud, the friction surface of the brake disc 23 can be cleaned by the cleaning roller 41, and the end of the scraper 1 42 will not contact the brake disc 23. With the movement of the mobile frame 3, the driving rod 46 will move synchronously. During this process, the sliding rod 43 will be reset under the action of the spring 2 431 and the spring 3 432. If the brake disc 23 is attached with solid mud, the cleaning roller 41 is not enough to clean the mud. At the same time, the cleaning roller 41 will be squeezed by the solid mud and move to the outside of the frame 1. And the spring 1 is compressed to store force. With the movement of the cleaning roller 41, the push rod 1 44 is pushed to move toward the outside of the frame 1. When the groove on the push rod 1 44 is aligned with the end of the push rod 2 45, the push rod 2 45 will move under the action of the spring 5, so that the push rod 2 45 is stuck into the groove on the push rod 1 44 toward the end of the push rod 1 44. At the same time, the other end of the push rod 2 45 is separated from the groove on the scraper 1 42, and the restriction of the push rod 2 45 on the scraper 1 42 is released. At this time, the scraper 1 42 will move toward the middle part of the frame 1 under the action of the spring 2 431, so that the end of the scraper 1 42 can contact the friction surface of the brake disc 23, so as to clean the solid mud on the brake disc 23. After the cleaning is completed, as the moving frame 3 moves, the driving rod 46 will be driven to move synchronously. During this process, the sliding rod 43 will be reset under the action of spring three 432, and the scraper 42 will be reset under the action of spring two 431. At the same time, the cleaning roller 41 will be reset under the action of spring one. As the cleaning roller 41 is reset, the push rod 1 44 will be reset under the action of spring four. During this process, the push rod 2 45 will move away from the push rod 1 44 under the action of its own inclined surface, so that the end of the push rod 2 45 will be disengaged from the groove provided on the push rod 1 44, and the other end will be again stuck in the groove provided on the scraper 1 42, so that the cleaning roller 41 and the scraper 1 42 are restored to their initial state.

[0056] In some embodiments, the end of the scraper 42 facing the brake disc 23 can contact the peripheral side of the cleaning roller 41, specifically, as shown in FIG. Figures 5 to 8 As shown, in the process of cleaning the liquid mud attached to the brake disc 23 by the cleaning roller 41, the mud will gradually transfer to the cleaning roller 41, and as the cleaning roller 41 rotates, the mud attached to the cleaning roller 41 can be scraped off by the scraper 42, thereby ensuring the cleaning effect of the cleaning roller 41 on the brake disc 23.

[0057] In some embodiments, the cleaning mechanism also includes a scraper 47 for cleaning the peripheral side of the brake disc 23. The scraper 47 is arranged in the test box 2, and the end of the scraper 47 can contact the outer peripheral side of the brake disc 23. A spring 471 is connected between the scraper 47 and the test box 2.

[0058] Specifically, Figure 4 As shown, after the test is completed, the brake caliper 21 is driven to move upward by the driving member 22, so that the brake caliper 21 is separated from the brake disc 23, and then the movable frame 3 is moved away from the test box 2, and the brake disc 23 is driven to move synchronously. During this process, the end of the scraper 2 47 can contact the peripheral side of the brake disc 23, and as the brake disc 23 rotates, the mud attached to the peripheral side of the brake disc 23 is scraped off, thereby further improving the cleaning effect of the brake disc 23.

[0059] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A brake test bench, comprising a frame (1), characterized in that: It also includes a test box (2), a fixing mechanism, a mud injection mechanism and a cleaning mechanism; The test box (2) is arranged on the frame (1), and a brake caliper (21) and a driving member 1 (22) are installed in the test box (2), and the driving member 1 (22) is connected to the brake caliper (21) and is used to drive the brake caliper (21) to move downward; The fixing mechanism is disposed on the frame (1) and is used to fix the brake disc (23). The fixing mechanism can move along the length direction of the frame (1) to push the brake disc (23) into a test chamber (201) provided in the test box (2). The fixing mechanism is connected to a second driving member (31) for driving the brake disc (23) to rotate. The mud injection mechanism is arranged on the frame (1) and is used to inject mud into the test chamber (201); The cleaning mechanism is arranged in the test box (2), and comprises a driving assembly, a cleaning roller (41) for cleaning liquid mud, and a scraper (42) for cleaning solid mud. The outer peripheral side of the cleaning roller (41) and the end of the scraper (42) can both contact the friction surface of the brake disc (23). The driving assembly can drive the cleaning roller (41) or the scraper (42) to clean the friction surface of the brake disc (23) according to the condition of the mud attached to the brake disc (23).

2. A brake test bench according to claim 1, characterized in that: An arc plate 1 (24) and two mounting plates (25) are provided in the test box (2). The two mounting plates (25) are symmetrically arranged along the length direction of the frame (1). The arc plate 1 (24) is connected to a side of the mounting plate (25) away from the fixing mechanism. The fixing mechanism is connected to the arc plate 2 (26). When the fixing mechanism approaches the test box (2), the arc plate 2 (26) can be embedded between the two mounting plates (25), so that a test chamber (201) is formed by the arc plate 1 (24), the arc plate 2 (26) and the two mounting plates (25).

3. A brake test bench according to claim 2, characterized in that: Arc strips (27) are provided on the arc surfaces opposite to each other of the arc plate 1 (24) and the arc plate 2 (26); the arc strips (27) can be inserted into a ventilation passage (231) provided on the brake disc (23); and during the test, the arc strips (27) can close the ventilation passage (231) in the test chamber (201).

4. A brake test bench according to claim 2, characterized in that: The fixing mechanism comprises a moving frame (3) and a rotating shaft (32). The moving frame (3) is slidably matched with the frame (1) along the length direction of the frame (1). Two fixing plates (33) are provided on the moving frame (3), and a space for installing a brake disc (23) is provided between the two fixing plates (33). The rotating shaft (32) is arranged along the width direction of the frame (1) and is rotatably connected to the two fixing plates (33). The second driving member (31) is arranged on one of the fixing plates (33), and the output end is connected to the rotating shaft (32).

5. A brake test bench according to claim 1, characterized in that: The mud injection mechanism comprises a mud storage device (34) disposed at the lower end of a frame (1), and a mud pump (35) for pumping mud out of the mud storage device (34). A through port (11) is provided on the frame (1), and the interior of the mud storage device (34) is communicated with a test chamber (201) provided in the test box (2) through the through port (11).

6. A brake test bench according to claim 4, characterized in that: The cleaning mechanism is provided in two groups and is symmetrically mounted on two mounting plates (25). A slide groove (12) is provided on the frame (1) along its width direction. A slider is slidably provided in the slide groove (12). A spring is connected between the slider and the frame (1). The cleaning roller (41) is rotatably connected to the slider via a torsion spring. A driving assembly is provided between the cleaning roller (41) and the scraper plate (42) on the corresponding side and is used to drive the cleaning roller (41) and the scraper plate (42) to move in opposite directions along the width direction of the frame (1).

7. A brake test bench according to claim 6, characterized in that: The driving assembly comprises a sliding rod (43), a driving member three, a push rod one (44) and a push rod two (45); the sliding rod (43) is slidably matched with the mounting plate (25) along the width direction of the frame (1); a spring two (431) is connected between the sliding rod (43) and the scraper one (42); the driving member three is used to drive the sliding rod (43) to move along the width direction of the frame (1); the push rod one (44) is slidably arranged along the width direction of the frame (1) and is engaged with the mounting plate (25). A spring four is connected, the push rod two (45) is slidably arranged along the length direction of the frame (1), and a spring five is connected between the push rod one (44) and the scraper one (42), respectively, and a groove is provided on the push rod one (44) or the scraper one (42), and the end of the push rod two (45) can be inserted into the groove on the push rod one (44) or the scraper one (42), and the end of the push rod two (45) toward the push rod one (44) is in an inclined shape, and the inclined surface gradually inclines toward the outside of the frame (1) along the direction away from the test box (2).

8. A brake test bench according to claim 7, characterized in that: The third driving member is a driving rod (46), which is connected to the movable frame (3) and has an end thereof facing the test box (2) and is inclined. The inclined surface gradually inclines toward the middle of the frame (1) in a direction approaching the movable frame (3). When the movable frame (3) moves toward the test box (2), the sliding rod (43) can contact the inclined surface on the driving rod (46). A third spring (432) is connected between the sliding rod (43) and the mounting plate (25) for driving the sliding rod (43) to reset.

9. A brake test bench according to claim 1, characterized in that: The end of the scraper (42) facing the brake disc (23) can contact the circumferential side of the cleaning roller (41).

10. A brake test bench according to claim 1, characterized in that: The cleaning mechanism also includes a second scraper (47) for cleaning the peripheral side of the brake disc (23). The second scraper (47) is arranged in the test box (2), and the end of the second scraper (47) can contact the peripheral side of the brake disc (23). A sixth spring (471) is connected between the second scraper (47) and the test box (2).

Images