A friction and wear test apparatus and method thereof

Abstract

A kind of friction and wear test equipment, including base platform, installation frame board I, installation frame board II, installation frame board III are sequentially provided with on the base platform from left to right, installation frame board I and installation frame board II are equipped with speed reducer, bearing seat is equipped on installation frame board III, rotating shaft I is equipped on bearing seat, the output shaft of speed reducer is fixedly connected between rotating shaft I by shaft coupling, the end of rotating shaft I away from shaft coupling is connected with connecting disc I;Far from the end of installation frame board III, the slide rail group perpendicular to installation frame board III is equipped on the base platform, slide bearing seat is equipped on slide rail group, rotating shaft II is equipped on slide bearing seat, the end of rotating shaft II towards connecting disc I is equipped with connecting disc II.

Description

Technical Field

[0001] This invention relates to the field of testing equipment technology, specifically to a friction and wear testing device and method. Background Technology

[0002] After the friction material is prepared, its friction coefficient, wear resistance and friction fatigue performance need to be tested. Existing test equipment and methods all adopt the method of taking small samples from the friction material for testing, and cannot comprehensively test the various friction properties of the material. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a friction and wear testing device.

[0004] The technical solution adopted by this invention to solve its technical problem is as follows:

[0005] A friction and wear testing device includes a base platform. From left to right, the base platform is provided with mounting plate I, mounting plate II, and mounting plate III. A speed reducer is mounted on mounting plate I and mounting plate II. A bearing seat is mounted on mounting plate III. A rotating shaft I is mounted on the bearing seat. The output shaft of the speed reducer is fixedly connected to the rotating shaft I via a coupling. A connecting plate I is connected to the end of the rotating shaft I away from the coupling. At the end of the base platform away from mounting plate III, a slide rail assembly perpendicular to mounting plate III is provided. A sliding bearing seat is mounted on the slide rail assembly. A rotating shaft II is mounted on the sliding bearing seat. A connecting plate II is located at the end of the rotating shaft II facing the connecting plate I.

[0006] In one embodiment, the base platform has a plurality of upward-facing inverted T-shaped grooves.

[0007] In one embodiment, a hydraulic motor is connected to the end of the reducer away from the coupling, and the hydraulic motor is connected to a hydraulic system.

[0008] In one embodiment, the connecting disk I is provided with a tapered center positioning pin I, a transmission key I, and a friction disk, and the friction disk is disposed on the connecting disk I via the tapered center positioning pin I and the transmission key I.

[0009] In one embodiment, the connecting plate II is provided with a tapered center positioning pin II, a transmission key II, and a friction material mounting plate, the friction material mounting plate being disposed on the connecting plate II via the tapered center positioning pin II and the transmission key II.

[0010] In one embodiment, a static torque sensor is connected to the end of the rotating shaft II away from the connecting disk II.

[0011] In one embodiment, the sliding bearing housing is connected to the bearing housing via a hydraulic cylinder, and the hydraulic cylinder is connected to a hydraulic system.

[0012] The technical solution adopted by this invention to solve its technical problem is as follows:

[0013] A friction and wear testing method includes the following steps:

[0014] Step 1: Select friction discs of different materials and properties according to the test requirements and install them on connecting disc I. Then install the friction material sample on the friction material mounting disc.

[0015] Step 2: Set the positive pressure. The hydraulic system controls the movement of the hydraulic cylinder so that the friction material sample is in close contact with the friction disc. When the positive pressure is reached, the hydraulic system drives the hydraulic motor. The hydraulic motor drives the rotating shaft I to rotate the friction disc. The torque generated during the relative rotation and friction between the friction disc and the friction material sample is acquired and recorded in real time by the static torque sensor.

[0016] Step 3: Using the measured torque, surface area and installation radius of the friction material sample, and the magnitude of the normal pressure applied to the friction material sample, the average coefficient of friction is calculated in real time using the friction force calculation formula.

[0017] Step 4: Calculate the wear rate of the friction material by measuring the weight of the friction material sample before and after the test;

[0018] Step 5: Evaluate the friction fatigue performance of the friction material by measuring the magnitude and change of the torque, as well as the surface condition of the friction material after the test.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] This invention utilizes a base platform on which, from left to right, mounting brackets I, II, and III are sequentially arranged. Mounting brackets I and II are equipped with speed reducers, and mounting bracket III has a bearing seat. A rotating shaft I is mounted on the bearing seat. The output shaft of the speed reducer is fixedly connected to the rotating shaft I via a coupling. A connecting disc I is connected to the end of the rotating shaft I away from the bearing seat. At the end of the base platform away from mounting bracket III, perpendicular to mounting bracket III, a slide rail assembly is provided. A sliding bearing seat is mounted on the slide rail assembly, and a rotating shaft II is mounted on the sliding bearing seat. A connecting disc II is located at the end of the rotating shaft II facing the connecting disc I. This allows for comprehensive and effective testing of the friction performance of friction materials. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention;

[0022] Figure 2 For the present invention Figure 1 Schematic diagram of the structure of connecting disk I;

[0023] Figure 3 For the present invention Figure 1 Schematic diagram of the friction disc;

[0024] Figure 4 For the present invention Figure 1 Schematic diagram of the structure of connecting disk II;

[0025] In the diagram: 10. Base platform; 11. Mounting plate I; 12. Mounting plate II; 13. Mounting plate III; 15. Inverted T-slot; 20. Reducer; 25. Coupling; 26. Hydraulic motor; 30. Bearing housing; 31. Rotating shaft I; 35. Connecting disc I; 36. Conical center locating pin I; 37. Transmission key I; 38. Friction disc; 40. Slide rail assembly; 41. Sliding bearing housing; 42. Rotating shaft II; 43. Static torque sensor; 45. Connecting disc II; 47. Transmission key II; 48. Friction material mounting disc; 49. Friction material sample mounting slot; 50. Hydraulic cylinder; 51. Temperature measuring device. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0027] Example 1

[0028] like Figure 1-4 As shown, this embodiment includes a base platform 10, on which a plurality of inverted T-shaped grooves 15 with upward openings are provided;

[0029] The base platform 10 is provided with mounting bracket I 11, mounting bracket II 12 and mounting bracket III 13 from left to right. The mounting bracket I 11 and mounting bracket II 12 are provided with reducers 20. In this embodiment, the reducers 20 are provided on the mounting bracket I 11 and mounting bracket II 12.

[0030] The mounting plate Ⅲ13 is provided with a bearing seat 30, and the bearing seat 30 is provided with a rotating shaft Ⅰ31. The output shaft of the reducer 20 is fixedly connected to the rotating shaft Ⅰ31 through a coupling 25. Thus, the operation of the reducer 20 can drive the rotating shaft Ⅰ31 to rotate synchronously.

[0031] A hydraulic motor 26 is connected to the end of the reducer 20 away from the coupling 25. The hydraulic motor 26 is connected to a hydraulic system. Thus, the hydraulic system controls the operation of the hydraulic motor 26, which drives the reducer 20 to run. The operation of the reducer 20 can drive the rotating shaft I 31 to rotate synchronously.

[0032] The end of the rotating shaft I31 away from the coupling 25 is connected to the connecting plate I35; the connecting plate I35 is provided with a tapered center positioning pin I36, a transmission key I37 and a friction plate 38, and the friction plate 38 is set on the connecting plate I35 through the tapered center positioning pin I36 and the transmission key I37.

[0033] At the end away from the mounting plate Ⅲ13, the base platform 10 is provided with a slide rail assembly 40 perpendicular to the mounting plate Ⅲ13. The slide rail assembly 40 is provided with a sliding bearing seat 41. The sliding bearing seat 41 is provided with a rotating shaft Ⅱ42. The end of the rotating shaft Ⅱ42 facing the connecting plate Ⅰ35 is provided with a connecting plate Ⅱ45.

[0034] The connecting plate II 45 is provided with a tapered center positioning pin II (not shown in the figure), a transmission key II 47 and a friction material mounting plate 48. The friction material mounting plate 48 is set on the connecting plate II 45 through the tapered center positioning pin II and the transmission key II 47.

[0035] In this embodiment, a plurality of friction material sample mounting slots 49 are provided on the side of the friction material mounting disk 48 facing the friction disk 38; the friction material sample mounting slots 49 are provided with magnetic material, so that the friction material sample can be attracted by the magnetic material, ensuring that the friction material sample will not fall off when it is mounted on the friction material mounting disk 48.

[0036] A temperature measuring device 51 is installed on the side of the friction material mounting plate 48 near the friction material mounting groove to monitor temperature changes during the friction and wear test.

[0037] A static torque sensor 43 is connected to one end of the rotating shaft II 42 away from the connecting plate II 45; and a sensor mounting base 44 is provided on the sliding bearing seat 4, so that the static torque sensor 43 is mounted on the sensor mounting base 44; in this embodiment, the rotating shaft II 42 is fixedly connected to the static torque sensor 43; the static torque sensor 43 is fixedly mounted on the sensor mounting base 44.

[0038] The sliding bearing housing 41 is connected to the bearing housing 30 by a hydraulic cylinder 50, which is connected to a hydraulic system. Thus, the hydraulic system controls the operation of the hydraulic cylinder 50, enabling the sliding bearing housing 41 to move left and right on the slide rail assembly 40.

[0039] Example 2

[0040] A friction and wear testing method includes the following steps:

[0041] Step 1: Select friction discs 38 of different materials and properties according to the test requirements and install them on connecting disc I 35. Then install the friction material sample on the friction material mounting disc 48.

[0042] Step 2: Set the positive pressure. The hydraulic system controls the movement of the hydraulic cylinder 50 so that the friction material sample is in close contact with the friction disc 38. When the positive pressure is reached, the hydraulic system drives the hydraulic motor 25. The hydraulic motor 25 drives the rotating shaft I 31 to rotate the friction disc 38. The torque generated during the relative rotation and friction between the friction disc 38 and the friction material sample is acquired and recorded in real time by the static torque sensor.

[0043] Step 3: Using the measured torque, surface area and installation radius of the friction material sample, and the magnitude of the normal pressure applied to the friction material sample, the average coefficient of friction is calculated in real time using the friction force calculation formula.

[0044] Step 4: Calculate the wear rate of the friction material by measuring the weight of the friction material sample before and after the test;

[0045] Step 5: Evaluate the friction fatigue performance of the friction material by measuring the magnitude and change of the torque, as well as the surface condition of the friction material after the test.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the technical solutions of the present invention have been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A friction and wear testing device, characterized in that: The system includes a base platform (10), on which mounting brackets I (11), II (12), and III (13) are arranged sequentially from left to right. A speed reducer (20) is mounted on mounting brackets I (11) and II (12), and a bearing seat (30) is mounted on mounting bracket III (13). A rotating shaft I (31) is mounted on the bearing seat (30). The output shaft of the speed reducer (20) is fixed to the rotating shaft I (31) via a coupling (25). The rotating shaft I (31) is connected to a connecting plate I (35) at one end away from the coupling (25); a slide rail assembly (40) perpendicular to the mounting plate III (13) is provided on the base platform (10) at one end away from the mounting bracket III (13), a sliding bearing seat (41) is provided on the slide rail assembly (40), a rotating shaft II (42) is provided on the sliding bearing seat (41), and a connecting plate II (45) is provided at one end of the rotating shaft II (42) facing the connecting plate I (35); The end of the reducer (20) away from the coupling (25) is connected to a hydraulic motor (26), and the hydraulic motor (26) is connected to a hydraulic system; The connecting disk I (35) is provided with a tapered center positioning pin I (36), a transmission key I (37) and a friction disk (38). The friction disk (38) is set on the connecting disk I (35) through the tapered center positioning pin I (36) and the transmission key I (37). The connecting plate II (45) is provided with a tapered center positioning pin II, a transmission key II (47) and a friction material mounting plate (48). The friction material mounting plate (48) is set on the connecting plate II (45) through the tapered center positioning pin II and the transmission key II (47). The friction material mounting plate (48) has a plurality of friction material sample mounting slots (49) on the side facing the friction plate (38), and the friction material sample mounting slots (49) are filled with magnetic material. A static torque sensor (43) is connected to one end of the rotating shaft II (42) away from the connecting disk II (45).

2. The friction and wear testing equipment according to claim 1, characterized in that: The base platform (10) has a plurality of inverted T-shaped grooves (15) with the opening facing upwards.

3. The friction and wear testing equipment according to claim 2, characterized in that: The sliding bearing housing (41) and the bearing housing (30) are connected by a hydraulic cylinder (50), which is connected to a hydraulic system.

4. The friction and wear testing method of the friction and wear testing equipment according to any one of claims 1-3, characterized in that: Includes the following steps: Step 1: Select friction discs (38) of different materials and properties according to the test requirements and install them on the connecting disc I (35). Then install the friction material sample on the friction material mounting disc (48). Step 2: Set the positive pressure. The hydraulic system controls the movement of the hydraulic cylinder (50) so that the friction material sample is in close contact with the friction disc (38). When the positive pressure is reached, the hydraulic system drives the hydraulic motor (26). The hydraulic motor (26) drives the rotating shaft I (31) to rotate the friction disc (38). The torque generated during the relative rotation and friction between the friction disc (38) and the friction material sample is acquired and recorded in real time by the static torque sensor (43). Step 3: Based on the measured torque, surface area and installation radius of the friction material sample, the normal force parameter of the friction material sample is set, and the average friction coefficient is calculated in real time using the friction force calculation formula. Step 4: Calculate the wear rate of the friction material by measuring the weight of the friction material sample before and after the test; Step 5: Evaluate the friction fatigue performance of the friction material by measuring the magnitude and change of the torque, as well as the surface condition of the friction material after the test.

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