Testing mechanism for full complement ceramic bearing

Abstract

The testing mechanism comprises a testing box, a box cover, a rotating shaft, a gear transmission box, a pressing disc, a tray, a bearing groove and a U-shaped connecting piece, the front portion of the testing box is open, the box cover is hinged to the opening of the testing box, the rotating shaft is vertically arranged in the testing box, and the top end of the rotating shaft penetrates out of the testing box and is connected with a rotation driving assembly; the bottom end of the rotating shaft penetrates out of the test box, a plurality of gear transmission boxes are arranged on the rotating shaft, and pressure plates are arranged at the output ends of the gear transmission boxes. A plurality of trays capable of placing bearings are adopted, a pressure plate driven by a gear transmission box is arranged above each tray, a plurality of bearings can be placed at the same time, inner rings of the bearings are driven to rotate, multi-station testing can be achieved, radial and axial loads can be simulated, a fan is arranged, dust can be blown into the testing box, and the testing efficiency is improved. Abrasion of dust in a use environment to the bearing is simulated, so that fatigue testing can be accurately carried out.

Description

Technical Field

[0001] This application relates to the field of ceramic bearing technology, and in particular to a testing mechanism for full complement ceramic bearings. Background Technology

[0002] Ceramic bearings are bearings made of ceramic materials and are typically used in mechanical components operating in harsh environments such as high speed, high temperature, corrosion, and radiation. Due to their superior properties unmatched by metal bearings, including high-temperature resistance and ultra-high strength, they lead the world of new materials. In the past decade or so, they have been increasingly widely used in various sectors of national economy and people's livelihood.

[0003] Ceramic bearings generally have no lubrication. The reliability of ceramic bearings is crucial to the normal operation of equipment. Therefore, it is necessary to test their condition under long-term working conditions to determine their lifespan. Summary of the Invention

[0004] The purpose of this application is to provide a testing mechanism for full-load ceramic bearings to solve the above-mentioned problems. It adopts multi-station testing, can test multiple bearings at the same time, and can simulate radial and axial loads. It is equipped with a fan to blow dust into the test chamber to simulate the wear of bearings by dust in the use environment, thus enabling accurate fatigue testing.

[0005] This application achieves the above objectives through the following technical solutions:

[0006] A testing mechanism for fully loaded ceramic bearings includes a test chamber, a cover, a rotating shaft, a gear transmission box, a pressure plate, a tray, a bearing groove, and a U-shaped connector. The front of the test chamber is open, and the cover is hinged to the open part of the test chamber. The rotating shaft is vertically installed inside the test chamber, with its top end extending out of the test chamber and connected to a rotation drive assembly. The bottom end of the rotating shaft also extends out of the test chamber. Multiple gear transmission boxes are installed on the rotating shaft, and each gear transmission box has a pressure plate at its output end. A guide assembly is installed on the back of each gear transmission box. A tray is installed below each pressure plate, and a bearing groove capable of accommodating the bearing is installed on the top of the tray. The tray is fixedly connected to a U-shaped connector, which is connected to a translation drive assembly capable of driving it to apply radial pressure to the bearing.

[0007] Furthermore, the rotary drive assembly includes a stand, a first cylinder, a motor base, and a motor. The stand is fixedly installed on the top of the test chamber, the first cylinder is fixedly installed on the top of the stand, the output end of the stand is fixedly connected to the motor base, the motor is fixedly installed on the motor base, and the motor output shaft is fixedly connected to the rotating shaft.

[0008] Furthermore, the translation drive assembly includes a connecting rod, a connecting plate, a cylinder seat, and a second cylinder. Each U-shaped connector is fixedly connected to a connecting rod. The bearing groove extends out of the back of the test box from one end opposite to the U-shaped connector and is fixedly connected to the connecting plate. The cylinder seat is fixedly connected to the back of the test box. The second cylinder is fixedly installed on the cylinder seat, and the output end of the cylinder seat is fixedly connected to the connecting plate.

[0009] Furthermore, the guiding assembly includes a guide rail and a guide block. The guide block is fixedly connected to the gear transmission box and slides with the guide rail. The guide rail is fixedly connected to the test box.

[0010] Furthermore, both the gearbox and the tray are evenly arranged around the circumference of the shaft, and the U-shaped connector has a cavity to avoid the shaft.

[0011] Furthermore, a shaft is fixedly connected to the bottom of the pressure plate, which can be inserted into the inner ring of the bearing.

[0012] Furthermore, a fan is installed at the bottom of the test chamber.

[0013] Compared to existing technologies, this application uses multiple trays capable of holding bearings, and each tray has a pressure plate driven by a gear transmission box, which can simultaneously hold multiple bearings and drive the inner ring of the bearings to rotate, thereby realizing multi-station testing. It can also simulate radial and axial loads, and is equipped with a fan to blow dust into the test chamber to simulate the wear of bearings by dust in the use environment, thus enabling accurate fatigue testing. Attached Figure Description

[0014] The accompanying drawings are provided to further illustrate the present application and form part of the specification. They are used together with the following detailed description to explain the present application, but do not constitute a limitation thereof. In the drawings:

[0015] Figure 1 This is a schematic diagram of the structure of this application;

[0016] Figure 2 This is a schematic diagram of the internal structure of the test chamber in this application;

[0017] Figure 3 This is a schematic diagram of the rotary drive component structure of this application;

[0018] Figure 4 This is a schematic diagram of the translation drive component structure of this application.

[0019] The annotations in the attached figures are explained as follows:

[0020] 1. Test box; 2. Box cover; 3. Rotating shaft; 4. Gear transmission box; 5. Guide rail; 6. Guide block; 7. Pressure plate; 8. Insert shaft; 9. Stand; 10. First cylinder; 11. Motor base; 12. Motor; 13. Tray; 14. Bearing groove; 15. Connecting rod; 16. Connecting plate; 17. Cylinder base; 18. Second cylinder; 19. Fan; 20. U-shaped connector. Detailed Implementation

[0021] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0022] In the description of this application, it should be understood that the terms "upper," "lower," "front," "back," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the appendix. Figure 1 This description is provided for the convenience of describing this application and for the purpose of simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0023] like Figure 1-4 As shown, a testing mechanism for a fully loaded ceramic bearing includes a test chamber 1, a cover 2, a rotating shaft 3, a gear transmission box 4, a pressure plate 7, a tray 13, a bearing groove 14, and a U-shaped connector 20. The front of the test chamber 1 is open, and the cover 2 is hinged to the open part of the test chamber 1. The rotating shaft 3 is vertically installed inside the test chamber 1. The top end of the rotating shaft 3 extends out of the test chamber 1 and is connected to a rotation drive assembly. The bottom end of the rotating shaft 3 extends out of the test chamber 1. Multiple gear transmission boxes 4 are installed on the rotating shaft 3. Each gear transmission box 4 has a pressure plate 7 at its output end. A guide assembly is installed on the back of the gear transmission box 4. A tray 13 is installed below each pressure plate 7. The top of the tray 13 has a bearing groove 14 that can accommodate the bearing. The tray 13 is fixedly connected to the U-shaped connector 20. The U-shaped connector 20 is connected to a translation drive assembly that can drive it to apply radial pressure to the bearing.

[0024] Specifically, the cover 2 can close the test chamber 1, allowing dust to flow inside the test chamber 1. The rotating shaft 3 can synchronously drive all the gear transmission boxes 4 to rotate. The gear transmission box 4 outputs power to drive the pressure plate 7 to rotate, which in turn drives the inner ring of the bearing to rotate, so that the pressure plate 7 can drive the inner ring of the bearing to rotate. The rotation drive assembly can drive the rotating shaft 3 to rotate while generating an axial load, applying pressure to the inner ring of the bearing. The translation drive assembly pushes the U-shaped connector 20 and the tray 13 to translate, generating a radial load on the outer ring of the bearing.

[0025] Furthermore, the rotary drive assembly includes a stand 9, a first cylinder 10, a motor base 11, and a motor 12. The stand 9 is fixedly installed on the top of the test box 1, the first cylinder 10 is fixedly installed on the top of the stand 9, the output end of the stand 9 is fixedly connected to the motor base 11, the motor 12 is fixedly installed on the motor base 11, and the output shaft of the motor 12 is fixedly connected to the rotating shaft 3.

[0026] Specifically, the extension and retraction of the first cylinder 10 drives the motor base 11 to rise and fall, which in turn causes the rotating shaft 3 to rise and fall accordingly. Then, the gear transmission box 4 rises and falls accordingly, allowing the pressure plate 7 to contact the bearing and generate an axial load. The motor 12 can drive the rotating shaft 3 to rotate, which in turn causes the gear transmission box 4 to rotate and drive the pressure plate 7 to rotate.

[0027] Furthermore, the translation drive assembly includes a connecting rod 15, a connecting plate 16, a cylinder seat 17, and a second cylinder 18. Each U-shaped connector 20 is fixedly connected to the connecting rod 15. The bearing groove 14 extends out of the back of the test box 1 from one end away from the U-shaped connector 20 and is fixedly connected to the connecting plate 16. The cylinder seat 17 is fixedly connected to the back of the test box 1. The second cylinder 18 is fixedly installed on the cylinder seat 17. The output end of the cylinder seat 17 is fixedly connected to the connecting plate 16.

[0028] Specifically, the cylinder seat 17 is fixed to the outer wall of the test chamber 1 to provide support for the second cylinder 18. The extension and retraction of the second cylinder 18 applies pressure to the connecting plate 16 and then the connecting rod 15, which is then transmitted to the U-shaped connector 20 and the tray 13, thereby generating a radial load.

[0029] Furthermore, the guiding assembly includes a guide rail 5 and a guide block 6. The guide block 6 is fixedly connected to the gear transmission box 4 and slides with the guide rail 5. The guide rail 5 is fixedly connected to the test box 1.

[0030] Specifically, when the gear transmission box 4 moves up and down with the rotating shaft 3, the guide block 6 moves up and down with the gear transmission box 4. Then the guide block 6 slides on the guide rail 5 to guide and prevent the gear transmission box 4 from rotating with the rotating shaft 3.

[0031] Furthermore, both the gear transmission box 4 and the tray 13 are evenly arranged around the circumference of the rotating shaft 3, and the U-shaped connector 20 has a cavity that avoids the rotating shaft 3.

[0032] Furthermore, the bottom of the pressure plate 7 is fixedly connected to a shaft 8 that can be inserted into the inner ring of the bearing to support the inner ring of the bearing when simulating radial load.

[0033] Furthermore, a fan 19 is installed at the bottom of the test chamber 1 to generate airflow, which disperses the dust inside the chamber, simulating dust in a real-world usage scenario.

[0034] In the above structure, the bearing to be tested is placed inside the bearing groove 14. The first cylinder 10 is activated to extend and drive the motor seat 11, motor 12, and rotating shaft 3 to descend. Then, the pressure plate 7 and insert shaft 8 press down on the inner ring of the bearing to simulate axial load. Next, the second cylinder 18 is activated to extend and drive the connecting plate 16 to apply pressure to simulate radial load. Then, the motor 12 is activated to drive the rotating shaft 3 to rotate. After the rotating shaft 3 rotates, it drives the pressure plate 7 and insert shaft 8 to rotate through the gear transmission box 4. After a certain period of testing, the motor 12 is stopped, the first cylinder 10 and the second cylinder 18 retract, and then the bearing is removed to test the condition of the bearing.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this application. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this application. Various changes and modifications can be made to this application without departing from the spirit and scope thereof, and all such changes and modifications fall within the scope of this application as claimed. The scope of protection of this application is defined by the appended claims and their equivalents.

Claims

1. A testing mechanism for full complement ceramic bearings, characterized in that: The test box (1), cover (2), shaft (3), gear transmission box (4), pressure plate (7), tray (13), bearing groove (14), and U-shaped connector (20) are included. The front of the test box (1) is open, and the cover (2) is hinged to the open part of the test box (1). The shaft (3) is vertically set inside the test box (1). The top of the shaft (3) extends out of the test box (1) and is connected to a rotary drive assembly. The bottom of the shaft (3) extends out of the test box (1). Multiple gear transmission boxes (4) are set on the shaft (3). Each gear transmission box (4) has a pressure plate (7) at its output end. A guide assembly is set on the back of the gear transmission box (4). Each pressure plate (7) has a tray (13) below it. The top of the tray (13) has a bearing groove (14) that can accommodate the bearing. The tray (13) is fixedly connected to the U-shaped connector (20). The U-shaped connector (20) is connected to a translation drive assembly that can drive it to apply radial pressure to the bearing.

2. The testing mechanism for a full complement ceramic bearing according to claim 1, characterized in that: The rotary drive assembly includes a stand (9), a first cylinder (10), a motor base (11), and a motor (12). The stand (9) is fixedly installed on the top of the test box (1), the first cylinder (10) is fixedly installed on the top of the stand (9), the output end of the stand (9) is fixedly connected to the motor base (11), the motor (12) is fixedly installed on the motor base (11), and the output shaft of the motor (12) is fixedly connected to the rotating shaft (3).

3. The testing mechanism for a full complement ceramic bearing according to claim 1, characterized in that: The translation drive assembly includes a connecting rod (15), a connecting plate (16), a cylinder seat (17), and a second cylinder (18). Each U-shaped connector (20) is fixedly connected to the connecting rod (15). The bearing groove (14) extends out of the back of the test box (1) from one end away from the U-shaped connector (20) and is fixedly connected to the connecting plate (16). The cylinder seat (17) is fixedly connected to the back of the test box (1). The second cylinder (18) is fixedly installed on the cylinder seat (17). The output end of the cylinder seat (17) is fixedly connected to the connecting plate (16).

4. The testing mechanism for a full complement ceramic bearing according to claim 1, characterized in that: The guide assembly includes a guide rail (5) and a guide block (6). The guide block (6) is fixedly connected to the gear transmission box (4) and slides with the guide rail (5). The guide rail (5) is fixedly connected to the test box (1).

5. The testing mechanism for a full complement ceramic bearing according to claim 1, characterized in that: The gear transmission box (4) and the tray (13) are evenly arranged around the circumference of the shaft (3), and the U-shaped connector (20) has a cavity to avoid the shaft (3).

6. The testing mechanism for a full complement ceramic bearing according to claim 1, characterized in that: The bottom of the pressure plate (7) is fixedly connected to a shaft (8) that can be inserted into the inner ring of the bearing.

7. The testing mechanism for a full complement ceramic bearing according to claim 1, characterized in that: A fan (19) is installed at the bottom of the test box (1).

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