A low-rotating-speed high-temperature environment lubricating material friction coefficient testing device

Abstract

The utility model belongs to high temperature friction coefficient test technical field especially for a kind of low-speed high-temperature environment with lubricating material friction coefficient testing device, including casing, bottom plate and base, casing is set in bottom plate upper portion, base is set in bottom plate lower portion;The top surface of bottom plate is respectively provided with horizontal key and vertical key, and force measurement driving assembly is also provided on the bottom surface of bottom plate;Supporting seat is provided on the mounting hole corresponding to horizontal key;The rear end of supporting seat is provided with motor base, and coupling is provided in the middle part of motor base;The end of coupling is connected with servo motor;The front end of supporting seat is provided with bearing, and supporting shaft is provided in the lower part of bearing;The front end of supporting shaft is also provided with test shaft;The front end of test shaft is provided with test assembly.The utility model can realize the standardization measurement of finished lubricating material sliding friction coefficient under low-speed high-temperature environment, solve the problem that traditional method cannot quantize test data.

Description

Technical Field

[0001] This utility model belongs to the field of high temperature friction coefficient testing technology, specifically relating to a device for testing the friction coefficient of lubricating materials in low-speed, high-temperature environments. Background Technology

[0002] Currently, most testing in the high-temperature environment low-speed motor industry adopts actual machine assembly testing, especially for the precise measurement of the dynamic friction coefficient of lubricating materials under low speed (1000-3000rpm) and high temperature (100-170℃) conditions. To verify the lubrication performance of bearings and oil samples at low speeds and high temperatures, it is necessary to adapt the motor's operating environment. Due to the cumbersome actual machine installation and the varying degrees of error during the installation process, similar tests in the industry tend to involve a large number and frequency of experiments, greatly increasing the testing workload and compromising the consistency and validity of the test results. Furthermore, these tests can only yield relatively subjective statistical data and cannot provide quantitative data on the lubrication performance of different lubricating materials, especially the sliding dynamic friction coefficient of representative powder metallurgy, lubricating oil, and lubricating grease products. Utility Model Content

[0003] To address the problems existing in the background technology, this utility model proposes a friction coefficient testing device for lubricating materials in low-speed, high-temperature environments. This device enables standardized measurement of the sliding friction coefficient of finished lubricating materials in low-speed, high-temperature environments, solving the problem that traditional methods cannot quantify test data.

[0004] The objective of this utility model can be achieved by the following technical solution: A friction coefficient testing device for lubricating materials in low-speed, high-temperature environments, comprising a housing, a base plate, and a base. The housing is located on the upper part of the base plate, and the base plate is located on the lower part of the base plate. A horizontal key and a vertical key are respectively provided on the top surface of the base plate, and a force-measuring drive assembly is also provided on the bottom surface of the base plate. A support seat is provided on the mounting hole corresponding to the horizontal key. A motor seat is provided at the rear end of the support seat, and a coupling is provided in the middle of the motor seat. A servo motor A is connected to the end of the coupling. A bearing is provided at the front end of the support seat, and a support shaft is provided below the bearing. A test shaft is also provided at the front end of the support shaft. A test assembly is provided at the front end of the test shaft.

[0005] The test assembly includes a test bearing connected to the front end of the test shaft; the test bearing is provided with a fixing clamp, an outer clamp, a calibration bearing, a heating sleeve, a heating rod and a load fork arranged sequentially from the inside to the outside; the front end of the test bearing is also provided with a floating clamp, a three-point wave spring and an inner pressure plate connected thereto.

[0006] The force-measuring drive assembly includes a lifting lug, a compression spring, a force-measuring cap, a force-measuring shaft, a force sensor, and a servo motor B, which are sequentially suspended at the bottom of the base plate. The load fork of the test assembly is connected to the test shaft via a movable pin.

[0007] The mounting holes corresponding to the vertical key are sequentially equipped with a laser thermometer, a temperature adjustment plate, and a temperature moving bracket, with the target point of the laser thermometer corresponding to the center of the test axis.

[0008] One side of the test assembly is provided with a micro-force seat on the top surface of the base; a micro-force sensor is connected to the upper part of the micro-force seat; a proportional rod is provided on the upper part of the micro-force sensor; and the end of the proportional rod is connected to the test assembly.

[0009] The upper part of the bearing is also provided with a bearing cover for sealing.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: This device uses a servo motor with a built-in encoder to achieve a stable rotation speed, and uses a proportional rod and a micro-force sensor to accurately calibrate and eliminate system errors. It accurately calculates values ​​such as torque and friction coefficient according to the algorithm. It is suitable for standard bench testing, completes data quantification, has short testing time, and high repeatability of results, making similar tests more time-saving and labor-saving, reducing time costs, improving product development efficiency, and enabling standardized measurement of the sliding friction coefficient of finished lubricating materials under low speed and high temperature conditions, solving the problem that traditional methods cannot quantify test data. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Figure 2 This is a side view of the present invention.

[0013] In the diagram: 1. Housing, 2. Base plate, 3. Base, 4. Servo motor A, 5. Coupling, 6. Motor mount, 7. Support seat, 8. Bearing, 9. Support shaft, 10. Bearing cover, 11. Test shaft, 12. Heating sleeve, 13. Calibration bearing, 14. Outer clamp, 15. Fixing clamp, 16. Test bearing, 17. Moving clamp, 18. Three-point wave spring, 19. Inner pressure plate, 20. Laser thermometer, 21. Temperature measuring adjustment plate, 22. Temperature measuring moving bracket, 23. Load fork, 24. Live pin, 25. Lifting lug, 26. Compression spring, 27. Force measuring cap, 28. Force measuring shaft, 29. Force sensor, 30. Servo motor B, 31. Horizontal key, 32. Vertical key, 33. Proportional rod, 34. Micro-force sensor, 35. Micro-force seat, 36. Heating rod. Detailed Implementation

[0014] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0015] like Figures 1-2 As shown, a friction coefficient testing device for lubricating materials in low-speed, high-temperature environments includes a housing 1, a base plate 2, and a base 3. The housing 1 is located on the upper part of the base plate 2, and the base 3 is located on the lower part of the base plate 2. A horizontal key 31 and a vertical key 32 are respectively provided on the top surface of the base plate 2, and a force-measuring drive assembly is also provided on the bottom surface of the base plate 2. A support seat 7 is provided on the mounting hole corresponding to the horizontal key 31. A motor seat 6 is provided at the rear end of the support seat 7, and a coupling 5 is provided in the middle of the motor seat 6. The coupling 5... A servo motor A4 is connected to the end; a bearing 8 is provided at the front end of the support base 7, and a support shaft 9 is provided at the lower part of the bearing 8; a bearing cover 10 for sealing is also provided on the upper part of the bearing 8; a test shaft 11 is also provided at the front end of the support shaft 9; a test component is provided at the front end of the test shaft 11; a laser thermometer 20, a temperature adjustment plate 21, and a temperature moving bracket 22 are sequentially provided on the mounting hole corresponding to the vertical key 32, and the target point of the laser thermometer 20 corresponds to the center of the test shaft 11.

[0016] The test assembly includes a test bearing 16 connected to the front end of the test shaft 11. From the inside out, the test bearing 16 is provided with a fixing clamp 15, an outer clamping plate 14, a calibration bearing 13, a heating sleeve 12, a heating rod 36, and a load fork 23. The front end of the test bearing 16 is also provided with a floating clamp 17, a three-point wave spring 18, and an inner pressure plate 19 connected thereto. A servo motor B30 with a built-in encoder is used to achieve stable rotational speed. A micro-force seat 35 is also provided on the top surface of the base 3 on one side of the test assembly. A micro-force sensor 34 is connected to the upper part of the micro-force seat 35. A proportional rod 33 is provided on the upper part of the micro-force sensor 34. The end of the proportional rod 33 is connected to the test assembly. One end of the proportional rod 33 rests on the micro-force sensor 34. The proportional rod 33 and the micro-force sensor 34 can be used for precise calibration and elimination of system errors, accurately calculating values ​​such as torque and friction coefficient according to the algorithm.

[0017] The force-measuring drive assembly includes a lifting lug 25, a compression spring 26, a force-measuring cap 27, a force-measuring shaft 28, a force sensor 29, and a servo motor B30, which are sequentially suspended at the bottom of the base plate 2. It is connected to the load fork 23 of the test assembly via a movable pin 24 and passes through the test shaft 11. The output shaft of the servo motor B30 is connected to the force sensor 29, and the end of the force sensor 29 is interconnected with the force-measuring shaft 28. A force-measuring cap 27 is fitted around the force-measuring shaft 28, and a compression spring 26 is pressed at the center of the force-measuring cap 27. A lifting lug 25 is fitted around the compression spring 26, and the test assembly is connected to the lifting lug 25 via the movable pin 24. When the servo motor B30 runs, the output shaft rotates at a constant speed, thus driving the test assembly to rotate. Here, a directional load is used instead of the original fan-blade type load, ensuring a consistent load direction and precise load quantity. Different load quantities can be added for testing as needed, greatly improving test repeatability and accuracy; data quantification is also possible.

[0018] In practical use, the following steps are taken: First, remove the movable pin 24, disconnect the heating sleeve 12, remove the test assembly, and then disassemble the test bearing 16, the moving clamp 17, the three-point wave spring 18, and the inner pressure plate 19 in sequence. Then, install a new test bearing 16, the moving clamp 17, the three-point wave spring 18, and the inner pressure plate 19 in sequence to form the test assembly, and insert it into the test shaft 11. Connect the test assembly to the lifting lug 25 through the movable pin 24. Then connect the heating sleeve 12, place the proportional rod 33 on the micro-force sensor 34, and calibrate the micro-force sensor 34. Set the temperature, force magnitude, and force application steps on the human-machine interface, click start, and after reaching the set temperature, complete the test according to the settings. Obtain data such as starting torque, operating torque, and friction coefficient through the embedded algorithm.

[0019] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A device for testing the friction coefficient of lubricating materials in a low-speed, high-temperature environment, comprising a housing (1), a base plate (2), and a base (3), wherein the housing (1) is disposed on the upper part of the base plate (2), and the base (3) is disposed on the lower part of the base plate (2); characterized in that: The top surface of the base plate (2) is provided with a horizontal key (31) and a vertical key (32), and a force measuring drive assembly is also provided on the bottom surface of the base plate (2); a support seat (7) is provided on the mounting hole corresponding to the horizontal key (31); a motor seat (6) is provided at the rear end of the support seat (7), and a coupling (5) is provided in the middle of the motor seat (6); a servo motor A (4) is connected to the end of the coupling (5); a bearing (8) is provided at the front end of the support seat (7), and a support shaft (9) is provided at the lower part of the bearing (8); a test shaft (11) is also provided at the front end of the support shaft (9); a test assembly is provided at the front end of the test shaft (11).

2. The friction coefficient testing device for lubricating materials in low-speed, high-temperature environments according to claim 1, characterized in that: The test assembly includes a test bearing (16) connected to the front end of the test shaft (11); the test bearing (16) is provided with a fixing clamp (15), an outer clamp (14), a calibration bearing (13), a heating sleeve (12), a heating rod (36) and a load fork (23) from the inside to the outside; the front end of the test bearing (16) is also provided with a floating clamp (17), a three-point wave spring (18) and an inner pressure plate (19) connected thereto.

3. The friction coefficient testing device for lubricating materials in low-speed, high-temperature environments according to claim 1, characterized in that: The force-measuring drive assembly includes a lifting lug (25), a compression spring (26), a force-measuring cap (27), a force-measuring shaft (28), a force sensor (29), and a servo motor B (30) that are sequentially suspended at the bottom of the base plate (2). It is connected to the load fork (23) of the test assembly through a set live pin (24) and passes through the test shaft (11).

4. The friction coefficient testing device for lubricating materials in low-speed, high-temperature environments according to claim 1, characterized in that: The mounting hole corresponding to the vertical key (32) is provided with a laser thermometer (20), a temperature adjustment plate (21), and a temperature moving bracket (22) in sequence, and the target point of the laser thermometer (20) corresponds to the center of the test axis (11).

5. The friction coefficient testing device for lubricating materials in low-speed, high-temperature environments according to claim 1, characterized in that: A micro-force seat (35) is also provided on the top surface of the base (3) on one side of the test component; a micro-force sensor (34) is connected to the upper part of the micro-force seat (35); a proportional rod is provided on the upper part of the micro-force sensor (34); and the end of the proportional rod (33) is connected to the test component.

6. The friction coefficient testing device for lubricating materials in low-speed, high-temperature environments according to claim 1, characterized in that: The bearing (8) is also provided with a bearing cap (10) for sealing.

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