A device for testing the thermal fatigue performance of a vehicle brake disc

Abstract

The utility model discloses a kind of automobile brake disc thermal fatigue performance testing device, it is related to brake disc detection technical field.The utility model includes driving component, carousel speed measuring component, platen component and chassis seat, carousel speed measuring component includes mounting disc, driven coupling disc and speed measuring motor, the pivot holder of the upper end panel face of chassis seat is worn in the side fixed of driven coupling disc adapter shaft, mounting disc is fixedly installed in one end of adapter shaft, driving component is connected with driven coupling disc transmission, the output end of speed measuring motor is connected with adapter shaft transmission by belt drive.The utility model is by being sleeved in mounting disc to brake disc, platen component is compacted to brake disc, driving component drives mounting disc rotation, make brake disc be compacted by platen component friction and warm up, the rotational speed of mounting disc is detected by speed measuring motor, the pressure to brake disc is detected by platen component, while real-time detection brake friction surface temperature, deduce the influence of friction coefficient and temperature to brake disc performance.

Description

Technical Field

[0001] This utility model belongs to the field of brake disc testing technology, and in particular relates to a device for testing the thermal fatigue performance of automotive brake discs. Background Technology

[0002] Under prolonged high-frequency braking conditions, automotive brake discs are prone to performance degradation or even failure due to thermal fatigue. Accurate assessment of their thermal performance is crucial for driving safety. Traditional testing methods struggle to simultaneously and accurately control rotational speed and pressure during dynamic friction processes, and cannot acquire multi-dimensional parameters such as friction interface temperature, speed decay, and pressure fluctuations in real time. This limits in-depth analysis of the thermal fatigue characteristics and friction coefficient evolution of brake discs. Therefore, there is an urgent need for a testing device that integrates rotary drive, speed monitoring, pressure loading, and temperature detection to achieve a comprehensive quantitative evaluation of the thermal fatigue performance of brake discs under simulated operating conditions.

[0003] To address these issues, we provide a device for testing the thermal fatigue performance of automotive brake discs. Utility Model Content

[0004] The purpose of this invention is to provide a device for testing the thermal fatigue performance of automotive brake discs. The device involves fitting the brake disc to be tested into a mounting disc, with a pressure plate component pressing the brake disc firmly. A drive component rotates the mounting disc, causing high-speed friction between the pressure plate component and the brake disc, which raises the brake disc temperature. A speed measuring motor detects the rotation speed of the mounting disc, and the performance of the brake disc under thermal fatigue conditions is inferred based on this speed. Furthermore, the pressure plate component detects the pressure on the brake disc, while simultaneously monitoring the temperature of the friction surface in real time, thereby inferring the coefficient of friction and the impact of temperature on the brake disc performance.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model relates to a device for testing the thermal fatigue performance of automotive brake discs, comprising a drive component, a turntable speed measuring component, a pressure plate component, and a base. The turntable speed measuring component includes a mounting plate, a driven coupling plate, and a speed measuring motor. A rotating shaft frame is fixedly mounted on the upper end plate of the base. A transfer shaft is fixedly mounted on one side of the driven coupling plate and rotatably passes through the rotating shaft frame. The mounting plate is fixedly mounted on the end of the transfer shaft away from the driven coupling plate. The drive component is connected to the driven coupling plate via a drive mechanism. The speed measuring motor is mounted on the base, and the output end of the speed measuring motor is connected to the transfer shaft via a belt.

[0006] A further feature of this invention is that a bearing is sleeved on the outer side of the adapter shaft, and the bearing is sleeved inside the shaft bracket.

[0007] A further feature of this invention is that a sleeve shaft is fixedly mounted on the side of the mounting plate away from the driven coupling plate, and a threaded hole is opened on the end face of the sleeve shaft away from the mounting plate. A pressure plate screw is screwed into the threaded hole on the end face of the sleeve shaft, and a set of locking rods are fixedly mounted in a circumferential array around the sleeve shaft on the side of the mounting plate away from the driven coupling plate.

[0008] A further feature of this invention is that the driving component includes a drive motor, an active coupling disk, and a coupling disk sleeve. The drive motor is mounted on a base frame, the coupling disk sleeve is fixedly mounted on the output end of the drive motor, the active coupling disk is fixedly mounted inside the coupling disk sleeve, and the driven coupling disk is sleeved inside the coupling disk sleeve. A set of magnets is fixedly mounted in a circumferential array on the side where the active coupling disk and the driven coupling disk are close to each other.

[0009] A further feature of this invention is that the pressure plate component includes a side push column, a column slide cylinder, and a set of friction columns. One end of the column slide cylinder is open and the other end is closed. The open end of the column slide cylinder faces the mounting plate. The closed end of the column slide cylinder is fixedly provided with a mounting bracket. The mounting bracket is fixedly installed on the base frame. The side push column is horizontally slidably sleeved inside the column slide cylinder. A set of side pressure plates is circumferentially arrayed and fixed at the end of the side push column near the mounting plate. Each friction column is fixedly installed on the side of each side pressure plate near the mounting plate.

[0010] A further feature of this invention is that a side-push screw is threaded through the closed end of the slide cylinder, a side-push piston is slidably sleeved inside the slide cylinder, one end of the side-push screw is rotatably mounted on one end of the side-push piston, a pressure sensor is fixedly mounted on the end face of the side-push screw away from the side pressure plate, and a buffer spring is sleeved inside the slide cylinder, with both ends of the buffer spring fixedly connected to the end face of the pressure sensor and the end face of the side-push piston, respectively.

[0011] A further feature of this invention is that a side bracket is fixedly provided on the side of the side push column near the mounting plate, and an infrared temperature detector is sleeved on the plate surface of the side bracket away from the side push column, with the detection end of the infrared temperature detector facing the mounting plate.

[0012] This utility model has the following beneficial effects: 1. This utility model involves fitting the brake disc to be tested into a mounting disc, pressing the brake disc with a pressure plate component, and driving the mounting disc to rotate, causing high-speed friction between the pressure plate component and the brake disc, which raises the temperature of the brake disc. A speed measuring motor detects the rotation speed of the mounting disc, and the performance of the brake disc under thermal fatigue state is inferred based on the rotation speed of the mounting disc.

[0013] 2. This utility model detects the pressure on the brake disc through the pressure plate component, and at the same time detects the temperature of the friction surface of the brake in real time, thereby inferring the friction coefficient and the influence of temperature on the performance of the brake disc. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of a device for testing the thermal fatigue performance of automotive brake discs.

[0016] Figure 2 This is an exploded view of the turntable speed measuring component and the base frame.

[0017] Figure 3 This is an exploded view of the driven coupling disk and the driving component.

[0018] Figure 4 This is a structural diagram of the column slide cylinder and the side thrust column.

[0019] Figure 5 This is a side sectional view of the pressure plate component.

[0020] The attached diagram lists the components represented by each number as follows: 1-Drive component, 101-Drive motor, 102-Active coupling disc, 103-Coupled disc sleeve, 2-Turntable speed measuring component, 201-Mounting disc, 201a-Sleeve disc shaft, 201a-1-Pressure disc screw, 201b-Locking disc rod, 202-Driven coupling disc, 202a-Adapter shaft, 202a-1-Bearing, 203-Speed ​​measuring motor, 3-Pressure disc component, 301-Side push column, 301a-Side pressure plate, 301b-Pressure sensor, 301c-Side bracket, 301c-1-Infrared temperature detector, 302-Column slide cylinder, 302a-Mounting bracket, 302b-Side push screw, 302b-1-Side push piston, 302c-Buffer spring, 303-Friction column, 4-Base frame seat, 401-Turnshaft bracket. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0022] Example 1, please refer to Figures 1 to 3This utility model relates to a device for testing the thermal fatigue performance of automotive brake discs, comprising a drive component 1, a turntable speed measuring component 2, a pressure plate component 3, and a base 4. The turntable speed measuring component 2 includes a mounting plate 201, a driven coupling plate 202, and a speed measuring motor 203. By fitting the brake disc to be tested into the mounting plate 201, the pressure plate component 3 presses the brake disc tightly, and the drive component 1 drives the mounting plate 201 to rotate, causing high-speed friction between the pressure plate component 3 and the brake disc, which raises the temperature of the brake disc. The speed measuring motor 203 detects the rotation speed of the mounting plate 201, and the performance of the brake disc under thermal fatigue conditions is inferred based on the rotation speed of the mounting plate 201. The pressure plate component 3 detects the pressure on the brake disc and simultaneously detects the temperature of the friction surface of the brake disc in real time, thereby inferring the coefficient of friction and the influence of temperature on the performance of the brake disc.

[0023] Specifically, a rotating shaft bracket 401 is fixed on the upper plate of the base 4, and a transfer shaft 202a is fixed on one side of the driven coupling disk 202. The transfer shaft 202a is rotatably inserted into the rotating shaft bracket 401. The mounting plate 201 is fixedly installed on the end of the transfer shaft 202a away from the driven coupling disk 202. The drive component 1 is connected to the driven coupling disk 202 in a transmission connection. The speed measuring motor 203 is mounted on the base 4, and the output end of the speed measuring motor 203 is connected to the transfer shaft 202a in a transmission connection via a belt.

[0024] Furthermore, a bearing 202a-1 is sleeved on the outer side of the adapter shaft 202a, and the bearing 202a-1 is sleeved inside the shaft bracket 401 to reduce the friction between the adapter shaft 202a and the shaft bracket 401.

[0025] Furthermore, a sleeve shaft 201a is fixedly mounted on the side of the mounting plate 201 away from the driven coupling plate 202. A threaded hole is opened on the end face of the sleeve shaft 201a away from the mounting plate 201. A pressure plate screw 201a-1 is screwed into the threaded hole on the end face of the sleeve shaft 201a. A set of locking rods 201b are fixedly mounted in a circumferential array around the sleeve shaft 201a on the side of the mounting plate 201 away from the driven coupling plate 202. When installing the brake disc, the brake disc is sleeved on the sleeve shaft 201a, so that a set of screw holes on the surface of the brake disc are sleeved in each locking rod 201b. When the mounting plate 201 rotates, the locking rods 201b drive the brake disc to rotate.

[0026] Furthermore, the drive component 1 includes a drive motor 101, an active coupling disk 102, and a coupling disk sleeve 103. The drive motor 101 is mounted on the base frame 4. The coupling disk sleeve 103 is fixedly mounted on the output end of the drive motor 101. The active coupling disk 102 is fixedly mounted inside the coupling disk sleeve 103. The driven coupling disk 202 is sleeved inside the coupling disk sleeve 103. A set of magnets is fixedly mounted in a circumferential array on the side where the active coupling disk 102 and the driven coupling disk 202 are close to each other. The drive motor 101 drives the coupling disk sleeve 103 to rotate, causing the active coupling disk 102 to drive the driven coupling disk 202 to rotate, thereby causing the mounting disk 201 to rotate.

[0027] The operation process in this embodiment is as follows: The brake disc is fitted onto the bearing shaft 201a, and a set of screw holes on the brake disc surface are fitted into each locking rod 201b. The pressure plate component 3 is pressed tightly against one side of the brake disc. The drive motor 101 drives the coupling disc sleeve 103 to rotate, causing the active coupling disc 102 to drive the driven coupling disc 202 to rotate, thereby causing the mounting disc 201 to rotate. This causes high-speed friction between the pressure plate component 3 and the brake disc, raising the temperature of the brake disc. The rotation speed of the mounting disc 201 is detected by the speed measuring motor 203. If the rotation speed of the mounting disc 201 decreases, the performance of the brake disc is stable. If the rotation speed of the mounting disc 201 remains unchanged, the friction coefficient of the brake disc decreases, i.e., the performance decreases.

[0028] Example 2, please refer to Figures 1 to 5 Based on Example 1, the pressure plate component 3 includes a side push column 301, a column slide cylinder 302 and a set of friction columns 303. By fitting the friction columns 303 into the column slide cylinder 302, the friction columns 303 are made to fit against one side of the brake disc, and pressure is applied to the friction columns 303, so that the brake disc is heated by friction during rotation.

[0029] Specifically, the column slide cylinder 302 has one open end and one closed end. The open end of the column slide cylinder 302 faces the mounting plate 201. The closed end of the column slide cylinder 302 is fixedly provided with a mounting bracket 302a. The mounting bracket 302a is fixedly installed on the base frame 4. The side push column 301 is horizontally slidably sleeved inside the column slide cylinder 302. A set of side pressure plates 301a is circumferentially arrayed and fixed at one end of the side push column 301 near the mounting plate 201. Each friction column 303 is fixedly installed on the side of each side pressure plate 301a near the mounting plate 201.

[0030] Furthermore, a side-push screw 302b is threaded through the closed end of the slide cylinder 302. A side-push piston 302b-1 is slidably sleeved inside the slide cylinder 302. One end of the side-push screw 302b is rotatably mounted on one end of the side-push piston 302b-1. A pressure sensor 301b is fixedly mounted on the end face of the side-push column 301 away from the side pressure plate 301a. A buffer spring 302c is sleeved inside the slide cylinder 302. The two ends of the buffer spring 302c are fixedly connected to the end face of the pressure sensor 301b and the end face of the side-push piston 302b-1, respectively. Rotating the side-push screw 302b causes the side-push piston 302b-1 to push the buffer spring 302c, which in turn pushes the side-push column 301. This causes the friction column 303 on one side of the side pressure plate 301a to press against the surface of the brake disc. The pressure sensor 301b detects the pressure of the side-push column 301 in real time.

[0031] Furthermore, a side bracket 301c is fixed to one side of the side push column 301 near the mounting plate 201. An infrared temperature detector 301c-1 is sleeved on the plate surface of the side bracket 301c away from the side push column 301. The detection end of the infrared temperature detector 301c-1 faces the mounting plate 201, and the infrared temperature detector 301c-1 detects the temperature of the brake disc in real time.

[0032] The operation process in this embodiment is as follows: Rotating the side thrust screw 302b causes the side thrust piston 302b-1 to push the buffer spring 302c, which in turn pushes the side thrust column 301. This causes the friction column 303 on one side of the side pressure plate 301a to press against the brake disc surface. The pressure sensor 301b detects the pressure of the side thrust column 301 in real time, and the infrared temperature detector 301c-1 detects the temperature of the brake disc in real time. Based on the pressure of the friction column 303 on the brake disc, combined with the temperature and rotational speed of the brake disc, the braking performance of the brake disc at different temperatures is detected.

[0033] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. A device for testing the thermal fatigue performance of automotive brake discs, comprising a drive component (1), a turntable speed measuring component (2), a pressure plate component (3), and a base frame (4), characterized in that: The turntable speed measuring component (2) includes a mounting plate (201), a driven coupling plate (202), and a speed measuring motor (203). A rotating shaft frame (401) is fixed on the upper plate of the base (4). A transfer shaft (202a) is fixed on one side of the driven coupling plate (202). The transfer shaft (202a) is rotatably inserted into the rotating shaft frame (401). The mounting plate (201) is fixedly installed at the end of the transfer shaft (202a) away from the driven coupling plate (202). The driving component (1) is connected to the driven coupling plate (202) in a transmission connection. The speed measuring motor (203) is mounted on the base (4). The output end of the speed measuring motor (203) is connected to the transfer shaft (202a) in a transmission connection via a belt.

2. The automotive brake disc thermal fatigue performance testing device according to claim 1, characterized in that: The outer side of the adapter shaft (202a) is fitted with a bearing (202a-1), which is fitted inside the shaft bracket (401).

3. The automotive brake disc thermal fatigue performance testing device according to claim 2, characterized in that: A sleeve shaft (201a) is fixedly provided on the side of the mounting plate (201) away from the driven coupling plate (202). A threaded hole is provided on the end face of the sleeve shaft (201a) away from the mounting plate (201). A pressure plate screw (201a-1) is screwed into the threaded hole on the end face of the sleeve shaft (201a). A set of locking rods (201b) are fixedly arranged in a circumferential array around the sleeve shaft (201a) on the side of the mounting plate (201) away from the driven coupling plate (202).

4. The automotive brake disc thermal fatigue performance testing device according to claim 3, characterized in that: The driving component (1) includes a driving motor (101), an active coupling disk (102), and a coupling disk sleeve (103). The driving motor (101) is mounted on the base frame (4). The coupling disk sleeve (103) is fixedly mounted on the output end of the driving motor (101). The active coupling disk (102) is fixedly mounted inside the coupling disk sleeve (103). The driven coupling disk (202) is sleeved inside the coupling disk sleeve (103). A set of magnets is fixedly mounted in a circumferential array on the side of the active coupling disk (102) and the driven coupling disk (202) that are close to each other.

5. The automotive brake disc thermal fatigue performance testing device according to claim 1, characterized in that: The pressure plate component (3) includes a side push column (301), a column slide cylinder (302), and a set of friction columns (303). One end of the column slide cylinder (302) is open and the other end is closed. The open end of the column slide cylinder (302) faces the mounting plate (201). The closed end of the column slide cylinder (302) is fixedly provided with a mounting bracket (302a). The mounting bracket (302a) is fixedly installed on the base frame (4). The side push column (301) is horizontally slidably sleeved in the column slide cylinder (302). A set of side pressure plates (301a) is circumferentially arranged at one end of the side push column (301) near the mounting plate (201). Each of the friction columns (303) is fixedly installed on the side side of each side pressure plate (301a) near the mounting plate (201).

6. The automotive brake disc thermal fatigue performance testing device according to claim 5, characterized in that: The closed end of the cylindrical slide (302) is threaded through with a side push screw (302b). A side push piston (302b-1) is slidably sleeved inside the cylindrical slide (302). One end of the side push screw (302b) is rotatably mounted on one end of the side push piston (302b-1). A pressure sensor (301b) is fixedly mounted on the end face of the side push column (301) away from the side pressure plate (301a). A buffer spring (302c) is sleeved inside the cylindrical slide (302). The two ends of the buffer spring (302c) are fixedly connected to the end face of the pressure sensor (301b) and the end face of the side push piston (302b-1), respectively.

7. The automotive brake disc thermal fatigue performance testing device according to claim 6, characterized in that: A side bracket (301c) is fixed on one side of the side push column (301) near the mounting plate (201). An infrared temperature detector (301c-1) is sleeved on the plate surface of the side bracket (301c) away from the side push column (301). The detection end of the infrared temperature detector (301c-1) faces the mounting plate (201).

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