CN109142122B - Test device for testing wear performance of brake pad and use method thereof - Google Patents
Test device for testing wear performance of brake pad and use method thereof Download PDFInfo
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- CN109142122B CN109142122B CN201811201578.8A CN201811201578A CN109142122B CN 109142122 B CN109142122 B CN 109142122B CN 201811201578 A CN201811201578 A CN 201811201578A CN 109142122 B CN109142122 B CN 109142122B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/56—Investigating resistance to wear or abrasion
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0005—Repeated or cyclic
Abstract
The invention discloses a test device for testing the wear performance of a brake pad, which comprises a hub, a brake test bed, a control system and an operating platform, wherein the operating platform comprises a supporting system and a functional system, the functional system comprises a simulated ground component and a lifting device, the simulated ground component comprises a simulated ground plate, a fixing part and an adjusting part, and the adjusting part comprises a limiting ring, a connecting rod, a guide plate and a threaded rod; the using method comprises the following steps: 1) preparation before testing, 2) testing step; the invention aims to provide a technical scheme for testing the wear performance of a brake pad and a using method thereof aiming at the defects in the prior art.
Description
Technical Field
The invention relates to the technical field of brake pad testing equipment, in particular to a testing device for testing the wear performance of a brake pad and a using method thereof.
Background
The brake pad is also called brake shoe, in the brake system of the automobile, the brake pad is the most key safety part, and the brake pad plays a decisive role in the quality of the brake effect, so the good brake pad is the protection spirit of people and automobiles.
The working principle of the brake mainly comes from friction, and kinetic energy of vehicle running is converted into heat energy after friction by using the friction between a brake pad and a brake disc and between a tire and the ground, so that the aim of decelerating and braking the vehicle is fulfilled. Because the friction action, the clutch blocks on the brake block can be worn gradually, the brake effect of the automobile can be influenced when the wear degree of the brake block is higher, and the driving safety is influenced, so that in order to ensure the driving safety, various manufacturers need to carry out wear performance test on the produced brake block to ensure that the brake block has good performance, but because the existing wear test period on the brake block is long, the condition is single, the experimental data is not accurate, and the wear resistance of the brake block leaving the factory can not be ensured.
Disclosure of Invention
The invention aims to provide a technical scheme for testing the wear performance of a brake pad and a using method thereof aiming at the defects in the prior art.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides a test device for testing brake block wear performance, includes wheel hub, brake test bench and control system, its characterized in that: the operation panel includes braced system and functional system, braced system includes chassis and footing, the footing sets up the below on the chassis, functional system is including simulation ground subassembly and hoisting device, simulation ground subassembly is including simulation ground panel, mounting and regulating part, the regulating part includes the spacing collar, the connecting rod, deflector and threaded rod, the below at simulation ground panel is installed at the top of connecting rod, the connecting rod passes the mounting respectively, be provided with the spacing collar on the connecting rod, the spacing collar is located the below on chassis, the below and the deflector fixed connection of connecting rod, the other end and the threaded rod fixed connection of deflector, the threaded rod is driven by hoisting device, the regulating part divide into front side regulating part and rear side regulating part, brake test platform includes braking system and power device, braking system installs on the chassis, wheel hub installs on power device.
The friction effect between rubber child and the ground when the setting of simulation ground panel has restoreed the brake state makes the experiment can go on under the dual function of tire and ground, wheel hub and brake block, brakes under the same circumstances of wheel hub functioning speed, has the friction of tire and ground to play supplementary speed reduction effect, consequently simulates setting up of ground panel and laminates reality more for the test result is more persuasive.
The brake test bench provides basic power and a basic brake structure for the brake test, is a basic guarantee for the brake test, the operating bench provides a platform and variable factors for the brake test, the support system is used for connecting and installing various components, the stability of the test is ensured, the footing is taken as a supporting chassis to play a main supporting role of the device for supporting, the functional system can provide road conditions with different gradients for the invention, the simulated floor board can be inclined or flat at different angles through the height adjustment of the two groups of adjusting pieces, make this device can study more variables, increased experimental satiation, make the test result have more persuasion, the threaded rod is driven by hoisting device, and hoisting device generally chooses for use small-size hoist engine, and the hoist engine plays the lifting action to the threaded rod to can fix the threaded rod in a certain department motionless. The upward movement of the threaded rod drives the connecting rod of the guide plate to move upwards, so that the simulation floor board also has the property of moving up and down, and the simulation floor board can be in a backward tilting, forward tilting or leveling state by adjusting the front and rear two groups of adjusting pieces, so that the conditions of the automobile during braking on an uphill slope, a downhill slope and a flat road are simulated, and the diversification of variables is increased.
Further, the fixing piece comprises an upper fixing plate and a lower fixing plate, the upper fixing plate is arranged above the chassis, and the lower fixing plate is arranged below the chassis; the design of an upper fixing plate and a lower fixing plate increases the connection strength of the adjusting piece and the chassis, and the structural stability of the joint is ensured.
Furthermore, mounting holes are formed in the upper fixing plate and the lower fixing plate, the upper fixing plate and the lower fixing plate correspond to each other in position, and the connecting rod penetrates through the mounting holes to be connected with the fixing piece; the mounting holes facilitate the connection of the connecting rods with the simulation floor board.
Furthermore, the limiting ring is positioned below the lower fixing plate, and the size of the limiting ring is larger than that of the mounting hole; can be according to the length of design size regulation connecting rod, when the connecting rod drives deflector and connecting rod rebound, simulation ground panel also can follow the connecting rod rebound, when the spacing collar reachs the position of mounting hole, the size of spacing collar is greater than the size of mounting hole, consequently the spacing collar can not continue rebound, the whole biggest displacement that reaches of regulating part makes the up-and-down motion of simulation ground panel more have foundation and coherence.
Furthermore, the brake system comprises a brake pad, a caliper assembly and a vertical frame, wherein the caliper assembly comprises a right arm and a left arm, clamping groove plates are arranged on the right arm and the left arm, the brake pad is installed in the clamping groove plates, and the side surfaces of the brake pad are connected with the right arm and the left arm through studs; the calliper subassembly is used for installing the brake block, and the calliper subassembly has the removal function simultaneously, and wheel hub accelerates or at the uniform velocity pivoted in-process utilizes the relative motion of calliper subassembly, makes brake block and wheel hub friction extrusion, makes the wheel hub in the motion slow down until stopping, and the installation of grudging post cooperation calliper subassembly makes the position of calliper subassembly and the position matching of wheel hub top, the better operation of being convenient for.
Furthermore, the right arm and the left arm are respectively connected to a piston rod, the piston rod is driven by an air cylinder, the air cylinder is arranged in a vertical frame, and the lower part of the vertical frame is fixed on the chassis; when the driving system is started, the piston rods on the two sides move simultaneously, the piston rods can push the left arm and the right arm to move towards the direction of the hub simultaneously, so that the brake pads arranged on the left arm and the right arm extrude the hub from the two sides, and the rotating hub is stopped by virtue of the friction action of the brake pads and the hub.
Furthermore, the power device comprises a driving shaft, side supporting plates and a bottom plate, wherein the bottom plate is connected to the chassis, the side supporting plates are connected to the bottom plate, two ends of the driving shaft are connected to the side supporting plates, and the hub is fixedly arranged on the driving shaft; the drive shaft is controlled by the driver, and the driver can be adjusted the rotational speed of drive shaft according to control system's different instruction, and wheel hub and drive shaft fixed connection, wheel hub can be synchronous motion with the drive shaft, and the drive shaft provides power for wheel hub's rotation, has also realized the regulation to wheel hub rotational speed simultaneously, satisfies more test data's demand.
The use method of the test device for testing the wear performance of the brake pad is characterized by comprising the following steps: the method comprises the following steps:
1) preparation before the test:
(1) firstly, a hub is arranged on a driving shaft, the hub is fixedly connected with the driving shaft, and the hub does not shake left and right;
(2) clamping the upper end of the brake pad in the clamping groove plate, ensuring that one side of the brake pad is tightly attached to the connected clamping groove plate, and fixing the brake pad with the clamping groove plate by using studs respectively;
(3) and finally, adjusting the adjusting piece to enable the height of the simulation floor board to be at the lowest point, ensuring that the rubber tire is not in contact with the simulation floor board, and checking the control system and the driving device to ensure that all the devices are in a normal use state.
2) The test steps are as follows:
(1) firstly, respectively operating a control system to set the upward displacement of two groups of adjusting parts according to the linear distance between two connecting rods in a test, enabling the upward inclination angle of a simulation ground plate along the rotation direction of a hub to be 30 degrees when the simulation ground plate is located at the highest point, setting the rotation speed of the hub to be 80km/h, and storing set data;
(2) then starting a driver and a driving shaft at intervals of 15-20 s, starting a braking system and a power device at the same time after the hub reaches a designed rotating speed and runs stably, starting the braking system and simulating a floor panel, recording the weight and the minimum thickness of a brake pad once every 1000 times, repeating the braking action until the brake pad loses the braking effect and reaches the wear limit, and simultaneously recording the total braking times and the residual weight and the minimum thickness of the brake pad when the test is finished;
(3) replacing the wheel hub and the brake pad again, adjusting the simulated ground plate to the lowest point, respectively operating the control system to set the upward displacement of the two groups of adjusting parts according to the linear distance between the two connecting rods in the test, enabling the downward inclination angle of the simulated ground plate along the rotation direction of the wheel hub to be 30 degrees when the simulated ground plate is located at the highest point, setting the rotation speed of the wheel hub to be 80km/h, storing the setting data, and completing the test according to the step (2);
(4) and (3) replacing the hub and the brake pad again, adjusting the simulated ground plate to the lowest point, respectively operating the control system to set the upward displacement of the two groups of adjusting parts according to the linear distance between the two connecting rods in the test, enabling the inclination angle of the simulated ground plate along the rotation horizontal direction of the hub to be 0 degrees when the simulated ground plate is located at the highest point, setting the rotation speed of the hub to be 100m/h, storing the setting data, and completing the test according to the step (2).
(5) And (3) selecting a simulated ground plate inclination angle parameter and a hub rotation speed parameter according to requirements, and repeating the steps (1) and (2).
Further, in the step 2), in the step 2, (2) the setting interval of the rotating speed of the hub is 10-130 km/h, and the inclination angle interval of the simulated ground board is-60 degrees; the higher the rotating speed is, the more difficult the braking is, the larger the loss to the brake block is, the rotating speed interval is large in the method, the abrasion condition of the brake block of the vehicle under the normal speed running can be reflected, meanwhile, the rotating speed of the hub is constant, the inclination angle of the simulation ground plate is adjusted, and the abrasion condition of the brake block of the vehicle on an uphill slope, a downhill slope and a gentle road surface and the running slope can be reflected.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
in the invention, the friction action between the rubber tire and the ground when the simulated ground panel is in a braking state is restored by the arrangement of the simulated ground panel, so that the test can be carried out under the double actions of the tire and the ground, the wheel hub and the brake pad, the brake is carried out under the condition that the running speed of the wheel hub is the same, and the friction between the tire and the ground can play a role in assisting in speed reduction, so that the arrangement of the simulated ground panel is more practical, and the test result is more convincing. The brake test bench provides basic power and a basic brake structure for the brake test, is a basic guarantee for the brake test, the operating bench provides a platform and variable factors for the brake test, the support system is used for connecting and installing various components, the stability of the test is ensured, the footing is taken as a supporting chassis to play a main supporting role of the device for supporting, the functional system can provide road conditions with different gradients for the invention, the simulated floor board can be inclined or flat at different angles through the height adjustment of the two groups of adjusting pieces, make this device can study more variables, increased experimental satiation, make the test result have more persuasion, the threaded rod is driven by hoisting device, and hoisting device generally chooses for use small-size hoist engine, and the hoist engine plays the lifting action to the threaded rod to can fix the threaded rod in a certain department motionless. The upward movement of the threaded rod drives the connecting rod of the guide plate to move upwards, so that the simulated floor board also has the property of moving up and down, and the simulated floor board can be in a backward tilting, forward tilting or leveling state by adjusting the front and rear two groups of adjusting pieces, thereby simulating the situations of braking an automobile on an uphill slope, a downhill slope and a flat road and increasing the diversity of variables; the use method can fully realize each speed.
The invention provides a test device for testing the wear performance of a brake pad and a technical scheme of a using method thereof.
Drawings
The invention will be further described with reference to the accompanying drawings in which:
FIG. 1 is a schematic structural diagram of a testing apparatus for testing wear performance of a brake pad according to the present invention;
FIG. 2 is a schematic view of the connection between the connecting rod and the fixing plate when the connecting rod is at the lowest point;
FIG. 3 is a schematic view of the connection between the braking system and the power device of the present invention;
FIG. 4 is a schematic view of the positions of the brake pad and the wheel hub during braking according to the present invention;
FIG. 5 is a schematic view of the connection between the connecting rod and the fixing plate when the connecting rod is at the lowest point;
FIG. 6 is a schematic view of the connection of the simulated ground assembly to the chassis of the present invention;
fig. 7 is a schematic diagram of the inclination of the simulated floor panel of the present invention.
In the figure: 1-a hub; 2-brake test bed; 3-an operation table; 4-a support system; 5-side supporting plate; 6-a chassis; 7-footing; 8-simulating a ground assembly; 9-a bottom plate; 10-simulated floor panels; 11-a braking system; 12-an adjustment member; 13-a limit ring; 14-a connecting rod; 15-a guide plate; 16-a threaded rod; 17-upper fixing plate; 18-lower fixing plate; 19-mounting holes; 20-brake block; 21-left arm; 22-a vertical frame; 23-right arm; 24-a clamping groove plate; 25-a stud; 26-rubber tyre; 27-a piston rod; 28-drive shaft.
Detailed Description
As shown in fig. 1 to 7, in order to solve the above technical problem, the present invention adopts the following technical solutions:
a test device for testing the abrasion performance of a brake pad comprises a hub 1, a brake test bed 2 and a control system, and further comprises an operation table 3, wherein the operation table 3 comprises a supporting system 4 and a functional system, the supporting system 4 comprises a chassis 6 and a footing 7, the footing 7 is arranged below the chassis 6, the functional system comprises a simulation ground component 8 and a lifting device, the simulation ground component 8 comprises a simulation ground panel 10, a fixing part and an adjusting part 12, the adjusting part 12 comprises a limiting ring 13, a connecting rod 14, a guide plate 15 and a threaded rod 16, the top of the connecting rod 14 is arranged below the simulation ground panel 10, the connecting rod 14 respectively penetrates through the fixing part, the limiting ring 13 is arranged on the connecting rod 14, the limiting ring 13 is positioned below the chassis 6, the lower part of the connecting rod 14 is fixedly connected with the guide plate 15, the other end of the guide plate 15 is fixedly connected with the threaded rod 16, the threaded rod 16 is driven by, the adjusting part 12 is divided into a front adjusting part and a rear adjusting part, the brake test bed 2 comprises a brake system 11 and a power device, the brake system 11 is installed on the chassis 6, and the hub 1 is installed on the power device.
The friction effect between the rubber tire 26 and the ground when the simulated ground panel 10 restores the braking state is achieved, so that the test can be carried out under the dual effects of the tire and the ground and the wheel hub 1 and the brake pad 20, the brake is carried out under the condition that the running speed of the wheel hub 1 is the same, and the friction between the tire and the ground can play a role in assisting deceleration, so that the simulated ground panel 10 is more practical in arrangement, and the test result is more convincing.
The brake test bed 2 provides basic power and a basic brake structure for the brake test, which is a basic guarantee for the brake test, the operating platform 3 provides a platform and variable factors for the brake test, the support system 4 is used for connecting and installing various components, which ensures the stability of the test, the footing 7 is used as a supporting chassis 6 to play a main supporting role of the device, the functional system can provide road conditions with different gradients for the invention, through the height adjustment of the two groups of adjusting pieces 12, the simulated floor board 10 can be inclined or flat at different angles, make this device can study more variables, increased experimental satiation degree, make the test result more persuasive, threaded rod 16 is driven by hoisting device, and hoisting device generally chooses small-size hoist engine for use, and the hoist engine plays the lifting action to threaded rod 16 to can fix threaded rod 16 in a certain department motionless. The upward movement of the threaded rod 16 drives the upward movement of the connecting rod 14 of the guide plate 15, so that the simulated floor board 10 also has the property of moving up and down, and the simulated floor board 10 can be in a backward tilting, forward tilting or leveling state by adjusting the front and rear two groups of adjusting parts 12, thereby simulating the situations of the automobile during braking on an uphill slope, a downhill slope and a highway and increasing the diversity of variables. The fixing piece comprises an upper fixing plate 17 and a lower fixing plate 18, the upper fixing plate 17 is arranged above the chassis 6, and the lower fixing plate 18 is arranged below the chassis 6; the design of the upper fixing plate 17 and the lower fixing plate 18 increases the connection strength of the adjusting part 12 and the chassis 6, and ensures the structural stability of the connection part. Mounting holes 19 are formed in the upper fixing plate 17 and the lower fixing plate 18, the positions of the upper fixing plate 17 and the lower fixing plate 18 correspond to each other, and the connecting rod 14 penetrates through the mounting holes 19 to be connected with the fixing piece; the mounting holes 19 facilitate the connection of the connecting rods 14 to the simulated floor panel 10. The limiting ring 13 is positioned below the lower fixing plate 18, and the size of the limiting ring 13 is larger than that of the mounting hole 19; can prescribe the length of connecting rod 14 according to the design size, when connecting rod 14 drives deflector 15 and connecting rod 14 and upwards removes, simulation ground panel 10 also can follow connecting rod 14 and upwards remove, when spacing collar 13 reachs the position of mounting hole 19, spacing collar 13's size is greater than the size of mounting hole 19, consequently spacing collar 13 can not continue the rebound, regulating part 12 wholly reaches ascending maximum displacement, make the up-and-down motion of simulation ground panel 10 more have the basis and the continuity. The brake system 11 comprises a brake pad 20, a caliper assembly and a vertical frame 22, wherein the caliper assembly comprises a right arm 23 and a left arm 21, clamping groove plates 24 are respectively arranged on the right arm 23 and the left arm 21, the brake pad 20 is arranged in the clamping groove plates 24, and the side surface of the brake pad 20 is connected with the right arm 23 and the left arm 21 through studs 25; the calliper subassembly is used for installing brake block 20, and the calliper subassembly has the removal function simultaneously, and wheel hub 1 accelerates or at the uniform velocity pivoted in-process, utilizes the relative motion of calliper subassembly, makes brake block 20 and wheel hub 1 friction extrusion, makes wheel hub 1 in the motion slow down until stopping, and grudging post 22 cooperates the installation of calliper subassembly, makes the position of calliper subassembly and the position matching of wheel hub 1 top, the better operation of being convenient for. The right arm 23 and the left arm 21 are respectively connected to a piston rod 27, the piston rod 27 is driven by an air cylinder, the air cylinder is arranged in the vertical frame 22, and the lower part of the vertical frame 22 is fixed on the chassis 6; when the driving system is started, the piston rods 27 on both sides move simultaneously, and the piston rods 27 can push the left arm 21 and the right arm 23 to move towards the hub 1 simultaneously, so that the brake pads 20 arranged on the left arm 21 and the right arm 23 press the hub 1 from both sides, and the rotating hub 1 is stopped by virtue of the friction action between the brake pads 20 and the hub 1. The power device comprises a driving shaft 28, side supporting plates 5 and a bottom plate 9, wherein the bottom plate 9 is connected to the chassis 6, the side supporting plates 5 are connected to the bottom plate 9, two ends of the driving shaft 28 are connected to the side supporting plates 5, and the hub 1 is fixedly arranged on the driving shaft 28; the drive shaft 28 is controlled by the driver, and the driver can adjust the rotational speed of drive shaft 28 according to control system's different instruction, wheel hub 1 and drive shaft 28 fixed connection, and wheel hub 1 can be synchronous motion with drive shaft 28, and drive shaft 28 provides power for the rotation of wheel hub 1, has also realized the regulation to wheel hub 1 rotational speed simultaneously, satisfies the demand of more test data.
The use method of the test device for testing the wear performance of the brake pad comprises the following steps:
1) preparation before the test:
(1) firstly, the hub 1 is arranged on the driving shaft 28, the hub 1 is ensured to be fixedly connected with the driving shaft 28, and the hub 1 does not shake left and right;
(2) clamping the upper end of the brake pad 20 in the clamping groove plate 24, ensuring that one side of the brake pad 20 is tightly attached to the connected clamping groove plate 24, and fixing the brake pad 20 and the clamping groove plate 24 respectively by using studs 25;
(3) finally, the adjusting piece 12 is adjusted to make the height of the simulated floor board 10 at the lowest point, so as to ensure that the rubber tire 26 is not in contact with the simulated floor board 10, and then the control system and the driving device are checked to ensure that all the devices are in a normal use state.
2) The test steps are as follows:
(1) firstly, respectively operating a control system to set the upward displacement of two groups of adjusting parts 12 according to the linear distance between two connecting rods 14 in a test, enabling the upward inclination angle of the simulated ground panel 10 along the rotation direction of the hub 1 to be 30 degrees when the simulated ground panel is positioned at the highest point, setting the rotation speed of the hub 1 to be 80km/h, and storing set data;
(2) then starting a driver and a driving shaft 28 at an interval of 15-20 s, starting a braking system 11 and a power device at the same time after the hub 1 reaches a designed rotating speed and runs stably, starting the braking system 11 and simulating a floor panel 10 at the same time, recording the weight and the minimum thickness of the brake pad 20 once every 1000 times, repeating the braking action until the brake pad 20 loses the braking effect and reaches the wear limit, and simultaneously recording the total braking times and the residual weight and the minimum thickness of the brake pad 20 at the end of the test;
(3) replacing the hub 1 and the brake pad 20 again, adjusting the simulated ground plate 10 to the lowest point, respectively operating the control system to set the upward displacement of the two groups of adjusting parts 12 according to the linear distance between the two connecting rods 14 in the test, enabling the downward inclination angle of the simulated ground plate 10 in the rotating direction of the hub 1 to be 30 degrees when the simulated ground plate is located at the highest point, setting the rotating speed of the hub 1 to be 80km/h, storing the set data, and completing the test according to the step (2);
(4) and (3) replacing the hub 1 and the brake pad 20 again, adjusting the simulated ground plate 10 to the lowest point, respectively operating the control system to set the upward displacement of the two groups of adjusting parts 12 according to the linear distance between the two connecting rods 14 in the test, enabling the inclination angle of the simulated ground plate 10 in the rotation horizontal direction of the hub 1 to be 0 degrees when the simulated ground plate is located at the highest point, setting the rotation speed of the hub 1 to be 100m/h, storing the setting data, and completing the test according to the step (2).
(5) And (3) selecting an inclination angle parameter of the simulated ground plate 10 and a rotating speed parameter of the hub 1 according to requirements, and repeating the steps (1) and (2).
Further, in the step 2), in the step 2, (2) the setting interval of the rotating speed of the hub 1 is 10-130 km/h, and the inclination angle interval of the simulated floor board 10 is-60 degrees; the higher the rotating speed is, the more difficult the braking is, the larger the loss to the brake block 20 is, the rotating speed interval in the method is large, the abrasion condition of the brake block 20 under the normal speed running of the vehicle can be reflected, meanwhile, the rotating speed of the hub 1 is constant, the inclination angle of the simulation ground plate 10 is adjusted, and the abrasion condition of the brake block 20 by the vehicle on an uphill slope, a downhill slope and a gentle road and the running slope can be reflected.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
in the invention, the friction action between the rubber tire 26 and the ground when the simulated ground panel 10 is in a braking state is restored, so that the test can be carried out under the double actions of the tire and the ground and the wheel hub 1 and the brake pad 20, and the braking is carried out under the condition that the running speed of the wheel hub 1 is the same, and the friction between the tire and the ground can play a role of assisting in speed reduction, so that the simulated ground panel 10 is more practical, and the test result is more convincing. The brake test bed 2 provides basic power and a basic brake structure for the brake test, which is a basic guarantee for the brake test, the operating platform 3 provides a platform and variable factors for the brake test, the support system 4 is used for connecting and installing various components, which ensures the stability of the test, the footing 7 is used as a supporting chassis 6 to play a main supporting role of the device, the functional system can provide road conditions with different gradients for the invention, through the height adjustment of the two groups of adjusting pieces 12, the simulated floor board 10 can be inclined or flat at different angles, make this device can study more variables, increased experimental satiation degree, make the test result more persuasive, threaded rod 16 is driven by hoisting device, and hoisting device generally chooses small-size hoist engine for use, and the hoist engine plays the lifting action to threaded rod 16 to can fix threaded rod 16 in a certain department motionless. The upward movement of the threaded rod 16 drives the upward movement of the connecting rod 14 of the guide plate 15, so that the simulated floor board 10 also has the property of moving up and down, and the simulated floor board 10 can be in a backward tilting, forward tilting or leveling state by adjusting the front and rear two groups of adjusting parts 12, thereby simulating the situations of braking an automobile on an uphill slope, a downhill slope and a highway and increasing the diversity of variables; the use method can fully realize each speed.
The invention provides a test device for testing the wear performance of a brake pad and a technical scheme of a using method thereof, the test device is simple, the using method is convenient and fast, the manufacturing cost is low, various road conditions can be simulated, the wear conditions of the brake pad 20 under various road conditions and environments such as an uphill road condition, a downhill road condition and a gentle road surface can be tested, and the accuracy of the test result is ensured.
The above is only a specific embodiment of the present invention, but the technical features of the present invention are not limited thereto. Any simple variations, equivalent substitutions or modifications based on the present invention to achieve substantially the same technical effects are within the scope of the present invention.
Claims (8)
1. The utility model provides a test device for testing brake block wear performance, includes wheel hub, brake test bench and control system, its characterized in that: the ground simulation device is characterized by further comprising an operating platform, the operating platform comprises a supporting system and a functional system, the supporting system comprises a chassis and feet, the feet are arranged below the chassis, the functional system comprises a simulation ground component and a lifting device, the simulation ground component comprises a simulation ground plate, a fixing part and an adjusting part, the adjusting part comprises a limiting ring, a connecting rod, a guide plate and a threaded rod, the top of the connecting rod is installed below the simulation ground plate, the connecting rod penetrates through the fixing part respectively, the limiting ring is arranged on the connecting rod and located below the chassis, the lower part of the connecting rod is fixedly connected with the guide plate, the other end of the guide plate is fixedly connected with the threaded rod, the threaded rod is driven by the lifting device, and the adjusting part is divided into a front adjusting part and a rear adjusting part, brake test platform includes braking system and power device, braking system installs on the chassis, wheel hub installs power device is last, braking system includes brake block, calliper subassembly and grudging post, the calliper subassembly includes right arm and left arm, the right arm with all be provided with the screens frid on the left arm, the brake block is installed in the screens frid, the side of brake block with the right arm with the left arm all adopts the double-screw bolt to connect.
2. A test device for testing the wear performance of a brake pad according to claim 1, wherein: the fixing piece comprises an upper fixing plate and a lower fixing plate, the upper fixing plate is installed above the chassis, and the lower fixing plate is installed below the chassis.
3. A test device for testing the wear performance of a brake pad according to claim 2, wherein: the upper fixing plate and the lower fixing plate are both provided with mounting holes, the positions of the upper fixing plate and the lower fixing plate correspond to each other, and the connecting rod penetrates through the mounting holes to be connected with the fixing piece.
4. A test device for testing the wear performance of a brake pad according to claim 3, wherein: the limiting ring is located below the lower fixing plate, and the size of the limiting ring is larger than that of the mounting hole.
5. A test device for testing the wear performance of a brake pad according to claim 1, wherein: the right arm and the left arm are respectively connected to a piston rod, the piston rod is driven by an air cylinder, the air cylinder is installed in the vertical frame, and the lower portion of the vertical frame is fixed to the chassis.
6. A test device for testing the wear performance of a brake pad according to claim 1, wherein: the outer side of the hub is sleeved with a rubber tire, and the rubber tire is fixedly connected with the hub.
7. A test device for testing the wear performance of a brake pad according to claim 1, wherein: the power device comprises a driving shaft, side supporting plates and a bottom plate, the bottom plate is connected to the chassis, the side supporting plates are connected to the bottom plate, the two ends of the driving shaft are connected to the side supporting plates 5, and the hub is fixedly mounted to the driving shaft.
8. The use method of the test device for testing the abrasion performance of the brake pad according to claim 1, wherein: the method comprises the following steps:
1) preparation before the test:
(1) firstly, a hub is arranged on a driving shaft, the hub is fixedly connected with the driving shaft, and the hub does not shake left and right;
(2) clamping the upper end of the brake pad in the clamping groove plate, ensuring that one side of the brake pad is tightly attached to the connected clamping groove plate, and fixing the brake pad with the clamping groove plate by using studs respectively;
(3) finally, adjusting the adjusting piece to enable the height of the simulation floor board to be at the lowest point, ensuring that the rubber tire is not in contact with the simulation floor board, and then checking the control system and the driving device to ensure that all the devices are in a normal use state;
2) the test steps are as follows:
(1) firstly, respectively operating a control system to set the upward displacement of two groups of adjusting parts according to the linear distance between two connecting rods in a test, enabling the upward inclination angle of a simulation ground plate along the rotation direction of a hub to be 30 degrees when the simulation ground plate is located at the highest point, setting the rotation speed of the hub to be 80km/h, and storing set data;
(2) then starting a driver and a driving shaft at intervals of 15-20 s, starting a brake system and a power device at the same time after the hub reaches a designed rotating speed and runs stably, starting the brake system and simulating a ground plate, recording the weight and the minimum thickness of a brake pad once every 1000 times, repeating the braking action until the brake pad loses the braking effect and reaches the wear limit, and simultaneously recording the total braking times and the residual weight and the minimum thickness of the brake pad at the end of the test, wherein the setting interval of the rotating speed of the hub is 10-130 km/h, and the inclination angle interval of the simulated ground plate is-60 degrees;
(3) replacing the wheel hub and the brake pad again, adjusting the simulated ground plate to the lowest point, respectively operating the control system to set the upward displacement of the two groups of adjusting parts according to the linear distance between the two connecting rods in the test, enabling the downward inclination angle of the simulated ground plate along the rotation direction of the wheel hub to be 30 degrees when the simulated ground plate is located at the highest point, setting the rotation speed of the wheel hub to be 80km/h, storing the setting data, and completing the test according to the step (2);
(4) replacing the wheel hub and the brake pad again, adjusting the simulated ground plate to the lowest point, respectively operating the control system to set the upward displacement of the two groups of adjusting parts according to the linear distance between the two connecting rods in the test, enabling the inclination angle of the simulated ground plate along the rotation horizontal direction of the wheel hub to be 0 degrees when the simulated ground plate is located at the highest point, setting the rotation speed of the wheel hub to be 100m/h, storing the setting data, and completing the test according to the step (2);
(5) and (3) selecting a simulated ground plate inclination angle parameter and a hub rotation speed parameter according to requirements, and repeating the steps (1) and (2).
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| CN110146301B (en) * | 2019-04-17 | 2021-06-08 | 朱兰英 | A testing arrangement for auto parts brake block |
| CN110411729B (en) * | 2019-08-07 | 2021-05-04 | 科大讯飞股份有限公司 | Brake pad service life prediction method and device |
| CN111879529A (en) * | 2020-08-11 | 2020-11-03 | 湖州爆米花信息科技有限公司 | Testing device for automobile accessory brake pad with environment simulation function |
| CN112683518A (en) * | 2021-01-23 | 2021-04-20 | 李言哄 | Debugging device for automobile part brake disc |
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| US3444720A (en) * | 1966-12-06 | 1969-05-20 | Herbert W Link | Brake lining testing device |
| JP3029237B2 (en) * | 1995-07-11 | 2000-04-04 | 住友ゴム工業株式会社 | Tabletop wear energy measurement tester |
| US7877216B2 (en) * | 2008-07-30 | 2011-01-25 | Honeywell International Inc. | Method, system, and apparatus for friction pad wear and brake condition monitoring |
| CN102393309B (en) * | 2011-08-25 | 2014-04-16 | 吉林大学 | Tyre coupling stiffness testing machine |
| CN103234850B (en) * | 2013-04-28 | 2016-04-13 | 西华大学 | Sole frictional wear experiment machine |
| CN103529373B (en) * | 2013-10-24 | 2016-02-10 | 四川虹视显示技术有限公司 | Defect detection device for OLED |
| CN106441945B (en) * | 2016-12-01 | 2019-11-15 | 天津浩迪得丰科技有限公司 | A kind of tyre detection device with braking and abrasion mechanism |
| CN107515167A (en) * | 2017-08-24 | 2017-12-26 | 九通新型摩擦材料（朝阳）股份有限公司 | One kind 1：1 brake block service life wear test platform |
| CN207703354U (en) * | 2017-12-10 | 2018-08-07 | 四川沃伦贝尔健康科技有限公司 | A kind of automatic thermometer gets rid of table chlorination equipment |
| CN207636432U (en) * | 2018-01-02 | 2018-07-20 | 铜仁学院 | Brake block thickness wear device and brake block thickness wear equipment |
| CN108426793A (en) * | 2018-02-02 | 2018-08-21 | 中铁隧道局集团有限公司 | A kind of New Kind of Hob abrasion experimental provision |
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Denomination of invention: A test device for testing the wear performance of brake pads and method of using the same Effective date of registration: 20220803 Granted publication date: 20210430 Pledgee: Zhejiang Shaoxing Ruifeng Rural Commercial Bank Co.,Ltd. Yangxunqiao sub branch Pledgor: SHAOXING WISDOM AUTO PARTS Co.,Ltd. Registration number: Y2022980011916 |
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