Axially positioned bearing vibration test fixture
By designing an axially positioned bearing vibration testing fixture, and utilizing the motor-driven shaft rotation and collision block vibration, the problem that individual bearing testing cannot simulate actual operating conditions is solved, achieving more reliable testing results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUXI SULIANG PRECISION MASCH CO LTD
- Filing Date
- 2025-08-28
- Publication Date
- 2026-06-16
AI Technical Summary
In existing technologies, testing a bearing alone cannot effectively simulate the actual operating conditions of the bearing on the shaft, resulting in unreliable test data.
Design an axially positioned bearing vibration testing fixture. By fitting the bearing onto the shaft and using a motor to drive the shaft column to rotate, the actual operating conditions are simulated. The vibration generated by the collision block and the protrusion is transmitted to the bearing for testing.
It improves the reliability of detection data, expands the detection range, can simulate the effects of vibration in real environments, and enhances the detection effect.
Smart Images
Figure CN224365775U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of vibration detection equipment, specifically to a bearing vibration detection test fixture with axial positioning. Background Technology
[0002] Axial positioning refers to the structure for positioning a bearing that is sleeved on a shaft. Different positioning methods are used depending on the application scenario, but regardless of the method, the goal is to ensure that the bearing is stably sleeved on the shaft and to avoid the bearing from shifting or even falling off during rotation.
[0003] Bearings connected to a shaft are subject to vibrations transmitted from the shaft. To ensure the vibration resistance of these bearings, testing is required. Currently, bearings are tested individually. However, since these bearings are fitted onto the shaft, testing them individually cannot accurately simulate the actual operating conditions. Therefore, an axially positioned bearing vibration testing fixture is proposed. Utility Model Content
[0004] The technical problem this invention aims to solve is that currently, bearings are tested individually. However, since these bearings are fitted onto a shaft, testing them individually cannot accurately simulate actual operating conditions. This invention provides an axially positioned bearing vibration testing fixture that allows the bearing to be tested to be fitted onto a shaft, and the vibration to be transmitted to the shaft, thereby simulating actual operating conditions and improving the reliability of the test data.
[0005] The technical solution adopted by this utility model to solve the technical problem is: an axially positioned bearing vibration detection test fixture, including a base, three support legs are evenly fixedly connected to the top side wall of the base near one end, the top of the support legs are detachably connected to a guide rail, a positioning plate is fixedly connected to the top edge of the base away from the support legs, a motor is detachably connected to the middle of the top of the positioning plate, a shaft is detachably connected to the output end of the motor, a positioning ring is sleeved on the end of the shaft near the motor, and a bearing is sleeved on the shaft.
[0006] As a preferred technical solution of this utility model, a support plate is fixedly connected to the side wall of the positioning plate opposite to the positioning ring and located below the motor. A protrusion is fixedly connected to the middle of the top side wall of the support plate. The protrusion has a conical structure. A collision block is fixedly connected to the side wall of the shaft column opposite to the protrusion.
[0007] As a preferred technical solution of this utility model, the bottom sidewall of the positioning ring is detachably connected to a movable column, the bottom end of the movable column is provided with a sleeve column, an inner groove is opened in the sleeve column near the top end, a spring is fixedly connected in the middle of the bottom sidewall of the inner groove, a damping structure is sleeved in the spring, the top end of the spring is fixedly connected to one end of the movable column extending into the inner groove, and the bottom end of the sleeve column is fixedly connected to the top sidewall of the base.
[0008] As a preferred technical solution of this utility model, a rotating groove is provided on the inner wall of the positioning ring near one side edge, and a rotating ring is rotatably connected in the rotating groove. The rotating ring is fixedly sleeved on one end of the shaft column. The inner wall of the positioning ring and the outer wall of the shaft column at the corresponding positions are both fixedly connected with protrusions, and the vertices of the protrusions are mutually close and intersecting.
[0009] As a preferred technical solution of this utility model, a sliding groove is provided in the guide rail, and a stud is rotatably connected between the two side walls of the sliding groove. A slider is threaded onto the stud, and a linkage plate is detachably connected to the top of the slider. The linkage plate has an L-shaped structure.
[0010] As a preferred technical solution of this utility model, a fixed ring is fixedly connected to one end of the linkage plate, a follower ring is rotatably connected to the side of the fixed ring away from the linkage plate, an anti-slip pad is fixedly connected to one side wall of the follower ring, a driver is detachably connected to one end of the outer wall of the guide rail, and the output end of the driver is detachably connected to one end of the stud.
[0011] This invention has the following advantages: A shaft column is installed on the equipment, allowing the bearing to be tested to be fitted onto it, thus simulating a real installation and working environment. The motor is then started to drive the shaft column to rotate. During rotation, the collision block contacts and collides with the protrusion, generating a bumpy feeling and vibration. This vibration is transmitted to the bearing through the shaft column, thereby detecting changes in the connection between the bearing and the shaft column after vibration, as well as changes in the bearing itself. The protrusions on the inner wall of the positioning ring and the outer wall of the shaft column simulate the subtle vibrations generated by component transmission under normal equipment operation, thus detecting the impact of such vibrations on the bearing. This improves the detection method, increases the range of detection data, and simulates a real environment, improving the reliability of the detection data. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the overall structure of a preferred embodiment of the present invention;
[0013] Figure 2 This is a half-sectional structural diagram of a preferred embodiment of the present invention;
[0014] Figure 3This is an exploded structural diagram of the positioning ring and shaft column of a preferred embodiment of the present invention.
[0015] Explanation of reference numerals in the attached diagram: 1. Base; 2. Support leg; 3. Guide rail; 4. Driver; 5. Linkage plate; 6. Fixed ring; 7. Follower ring; 8. Sleeve column; 9. Movable column; 10. Positioning ring; 11. Shaft column; 12. Bearing; 13. Positioning plate; 14. Support plate; 15. Protrusion; 16. Motor; 17. Inner groove; 18. Spring; 19. Stud; 20. Rotary groove; 21. Rotary ring; 22. Collision block. Detailed Implementation
[0016] The present invention will be further described below with reference to the accompanying drawings.
[0017] Please refer to the following: Figure 1-3 This utility model discloses an axially positioned bearing vibration testing fixture, comprising a base 1, three support legs 2 uniformly fixedly connected to the top side wall of the base 1 near one end, a guide rail 3 detachably connected to the top of the support legs 2, a positioning plate 13 fixedly connected to the top edge of the base 1 away from the support legs 2, a motor 16 detachably connected to the middle of the top of the positioning plate 13, a shaft column 11 detachably connected to the output end of the motor 16, a positioning ring 10 sleeved on the end of the shaft column 11 near the motor 16, a bearing 12 sleeved on the shaft column 11, a support plate 14 fixedly connected to the side wall of the positioning plate 13 opposite to the positioning ring 10 and located below the motor 16, a protrusion 15 fixedly connected to the middle of the top side wall of the support plate 14, the protrusion 15 having a conical structure, and a collision block 22 fixedly connected to the side wall of the shaft column 11 opposite to the protrusion 15.
[0018] The bottom sidewall of the positioning ring 10 is detachably connected to a movable column 9. A sleeve column 8 is provided at the bottom end of the movable column 9. An inner groove 17 is provided inside the sleeve column 8 near the top. A spring 18 is fixedly connected to the middle of the bottom sidewall of the inner groove 17. A damping structure is sleeved inside the spring 18. The top end of the spring 18 is fixedly connected to one end of the movable column 9 that extends into the inner groove 17. The bottom end of the sleeve column 8 is fixedly connected to the top sidewall of the base 1. A rotating groove 20 is provided on the inner wall of the positioning ring 10 near one side edge. A rotating ring 21 is rotatably connected in the rotating groove 20. The rotating ring 21 is fixedly sleeved on one end of the shaft column 11. The inner wall of the positioning ring 10 and the outer wall of the shaft column 11 at corresponding positions are both fixedly connected with protrusions, and the apexes of the protrusions are mutually fitted and intersecting.
[0019] The technical effect of this solution is as follows: the shaft column 11 is connected into the positioning ring 10 to ensure that the shaft column 11 is kept in a horizontal state. Then, the bearing 12 to be tested is put on the shaft column 11. After that, the bearing 12 is positioned by the fixing ring 6 and the follower ring 7. Then, the motor 16 is started, and the motor 16 drives the shaft column 11 and the bearing 12 to rotate. During the rotation, the collision block 22 fixed on the shaft column 11 will collide with the protrusion 15. Because the protrusion 15 is tough, it will deform and then recover when subjected to a certain force, thus generating a bumpy feeling. The violent vibration generated will be transmitted to the shaft column 11 and the bearing 12, thereby testing the connection condition after vibration and the condition of the bearing 12 itself. The protrusion can simulate high-frequency and low-energy vibration, thereby simulating the small vibrations naturally generated by the operation of the equipment, thus improving the reliability of the test data.
[0020] The guide rail 3 has a groove, and a stud 19 is rotatably connected between the two side walls of the groove. A slider is threaded onto the stud 19, and a linkage plate 5 is detachably connected to the top of the slider. The linkage plate 5 has an L-shaped structure. A fixing ring 6 is fixedly connected to one end of the linkage plate 5. A follower ring 7 is rotatably connected to the side of the fixing ring 6 away from the linkage plate 5. An anti-slip pad is fixedly connected to one side wall of the follower ring 7. A driver 4 is detachably connected to the outer wall of one end of the guide rail 3. The output end of the driver 4 is detachably connected to one end of the stud 19.
[0021] The technical effect of this solution is as follows: the starter 4 drives the fixed ring 6 to approach the shaft column 11 via the stud 19. As the fixed ring 6 moves, the follower ring 7 will be fitted onto the shaft column 11. When the follower ring 7 is in contact with the bearing 12, it can limit its movement. Because the follower ring 7 and the fixed ring 6 are in a rotational relationship, it does not affect the normal rotation of the shaft column 11 and the bearing 12. This ensures the stability of the bearing 12 during the test and prevents it from falling off. A pressure sensor can also be embedded in the follower ring 7 to test the pressure caused by the displacement of the bearing 12 after vibration. Because the follower ring 7 is connected with an anti-slip pad, it is relatively soft and leaves room for the bearing 12 to move under vibration. If it were a rigid connection, it would not be able to accurately detect the changes in the bearing 12 under vibration.
[0022] Specifically, in use, the bearing 12 is fitted onto the shaft column 11, and then the driver 4 is started to drive the stud 19, thereby moving the linkage plate 5 and the fixed ring 6. As the fixed ring 6 and the follower ring 7 are fitted onto the shaft column 11, the follower ring 7 finally comes into contact with one side of the bearing 12. Then the motor 16 is started to drive the shaft column 11 and the bearing 12 to rotate. Because the anti-slip pad connected to the follower ring 7 can drive the follower ring 7 to rotate synchronously, it also limits the bearing 12. The collision block 22 and the protrusion 15 can simulate bumps and vibrations, while the protrusions can simulate slight vibrations caused by the transmission of structural components. Thus, the bearing 12 can be simulated to vibrate under different working environments, improving the coverage of the detection and the reliability of the detection data.
[0023] The above are merely preferred embodiments of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.
[0024] All other parts of this utility model that are not described in detail belong to the prior art, and therefore will not be described in detail here.
[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.
Claims
1. A bearing vibration testing fixture for axial positioning, comprising a base (1), characterized in that, The base (1) has three support legs (2) evenly fixedly connected to the top side wall near one end. The top of the support legs (2) is detachably connected to a guide rail (3). The top of the base (1) and the edge away from the support legs (2) is fixedly connected to a positioning plate (13). The top of the positioning plate (13) is detachably connected to a motor (16). The output end of the motor (16) is detachably connected to a shaft (11). The end of the shaft (11) near the motor (16) is fitted with a positioning ring (10). The shaft (11) is fitted with a bearing (12).
2. The bearing vibration detection test fixture with axial positioning as described in claim 1, characterized in that, The positioning plate (13) is opposite to the positioning ring (10) and is fixedly connected to the side wall below the motor (16) with a support plate (14). A protrusion (15) is fixedly connected to the middle of the top side wall of the support plate (14). The protrusion (15) has a conical structure. A collision block (22) is fixedly connected to the side wall opposite to the protrusion (15) of the shaft column (11).
3. The bearing vibration detection test fixture for axial positioning as described in claim 1, characterized in that, The bottom sidewall of the positioning ring (10) is detachably connected to a movable column (9). A sleeve column (8) is provided at the bottom end of the movable column (9). An inner groove (17) is provided inside the sleeve column (8) and near the top. A spring (18) is fixedly connected in the middle of the bottom sidewall of the inner groove (17). A damping structure is sleeved inside the spring (18). The top end of the spring (18) is fixedly connected to one end of the movable column (9) that extends into the inner groove (17). The bottom end of the sleeve column (8) is fixedly connected to the top sidewall of the base (1).
4. The bearing vibration detection test fixture with axial positioning as described in claim 1, characterized in that, A rotating groove (20) is provided on the inner wall of the positioning ring (10) near one side edge. A rotating ring (21) is rotatably connected in the rotating groove (20). The rotating ring (21) is fixedly sleeved on one end of the shaft column (11). The inner wall of the positioning ring (10) and the outer wall of the shaft column (11) at corresponding positions are both fixedly connected with protrusions, and the vertices of the protrusions are mutually fitted and intersecting.
5. The bearing vibration detection test fixture for axial positioning as described in claim 1, characterized in that, The guide rail (3) has a sliding groove, and a stud (19) is rotatably connected between the two side walls of the sliding groove. A slider is threaded onto the stud (19), and a linkage plate (5) is detachably connected to the top of the slider. The linkage plate (5) has an L-shaped structure.
6. The bearing vibration detection test fixture for axial positioning as described in claim 5, characterized in that, One end of the linkage plate (5) is fixedly connected to a fixing ring (6), and the side of the fixing ring (6) away from the linkage plate (5) is rotatably connected to a follower ring (7). One side wall of the follower ring (7) is fixedly connected to an anti-slip pad. One end of the guide rail (3) is detachably connected to a driver (4), and the output end of the driver (4) is detachably connected to one end of the stud (19).