WO2023137600A1

WO2023137600A1 - Variable-speed fault diagnosis apparatus for rolling bearing of high-speed locomotive

Info

Publication number: WO2023137600A1
Application number: PCT/CN2022/072619
Authority: WO
Inventors: 李俊峰; 王一博
Original assignee: 广州工商学院
Priority date: 2022-01-18
Filing date: 2022-01-18
Publication date: 2023-07-27
Also published as: CN118339442A

Abstract

A variable-speed fault diagnosis apparatus for a rolling bearing of a high-speed locomotive, which relates to the technical field of bearing detection. The diagnosis apparatus comprises a diagnosis box (1), a fixed box (4) arranged at the top end of the diagnosis box (1), and a detection box (13) arranged on one side of the diagnosis box (1), wherein a rotating assembly is arranged inside the diagnosis box (1); an adjustment assembly is arranged at the bottom end of the rotating assembly; a group of butt-joint assemblies are vertically arranged inside the fixed box (4), and the other group of butt-joint assemblies are transversely arranged inside the detection box (13); the adjustment assembly comprises a first hydraulic pump (14), an L-shaped plate (16), a second hydraulic pump (17) and a U-shaped plate (19); and each butt-joint assembly comprises a lifting gas cylinder (5), a telescopic column (6), a locking ring (24) and a limiting rod (27). The diagnosis apparatus can carry out fault diagnosis on different states of a rolling bearing, such that some faulty elements of the bearing are replaced according to a diagnosis result, thereby increasing the resource utilization rate.

Description

A Variable Speed Fault Diagnosis Equipment for Rolling Bearings of High Speed Locomotives

technical field

The invention relates to the technical field of bearing detection, in particular to a variable speed fault diagnosis device for rolling bearings of high-speed locomotives.

Background technique

High-speed locomotives, also known as high-speed trains, refer to trains that can run continuously at high speeds, with a maximum speed of more than 200km/h. High-speed train is a modern high-speed transportation tool, which is a concentrated expression of the top science and technology of trains, which can greatly increase the speed of train travel and improve the efficiency of train transportation. High-speed trains are fast, comfortable, stable, safe, energy-saving and environmentally friendly, and are very popular among contemporary people. All countries in the world strongly support the use of new high-speed trains to meet the growing travel needs.

During the running of high-speed locomotives, rolling bearings are needed to connect different carriages, and rolling bearings are also needed to drive the locomotives. Rolling bearings are precision mechanical components that change the sliding friction between the running shaft and the shaft seat into rolling friction, thereby reducing friction loss. Rolling bearings are generally composed of four parts: inner ring, outer ring, rolling body and cage. The function of the inner ring is to cooperate with the shaft and rotate together with the shaft; the function of the outer ring is to cooperate with the bearing seat to play a supporting role; the rolling body is evenly distributed between the inner ring and the outer ring by means of the cage, and its shape, size and quantity directly affect the performance and life of the rolling bearing; the cage can evenly distribute the rolling body and guide the rolling body to rotate for lubrication. , so it is necessary to carry out fault diagnosis work on rolling bearings.

At present, the rolling bearing fault diagnosis equipment on the market is all for testing the bearing as a whole. Unqualified bearings will be discarded, and other original and undamaged components inside the bearing will also be discarded, resulting in great waste. In addition, most of the fault diagnosis of bearings only detects the vertical or horizontal configuration, and the equipment needs to be further optimized.

Contents of the invention

The main purpose of the present invention is to provide a variable-speed fault diagnosis device for rolling bearings of high-speed locomotives, which can effectively solve the problem that the fault diagnosis devices in the background technology are all for detecting the whole bearing, unqualified bearings will be discarded, and other original and undamaged components inside the bearing will also be discarded, resulting in great waste, and most of the fault diagnosis of bearings only detects the vertical or horizontal configuration, and the equipment needs to be further optimized.

In order to achieve the above object, the technical solution adopted by the present invention is: a variable speed fault diagnosis device for rolling bearings of high-speed locomotives according to the present invention, which includes a diagnostic box, a fixed box set on the top of the diagnostic box, and a detection box set on one side of the diagnostic box. A rotating assembly is arranged inside the diagnostic box, an adjusting assembly is arranged at the bottom of the rotating assembly, a set of docking assemblies is vertically arranged inside the fixed box, and another set of docking assemblies is arranged horizontally inside the detection box;

The adjustment assembly includes a first hydraulic pump, an L-shaped plate, a second hydraulic pump, and a U-shaped plate. The inner bottom of the diagnostic box is provided with a first hydraulic pump. The output end of the first hydraulic pump is provided with a first plunger along the extension line of the moving direction. The top end of the first plunger is fixedly connected with an L-shaped plate. On one side, the bottom end of the U-shaped plate fits the top end of the L-shaped plate;

The docking assembly includes a lifting cylinder, a telescopic column, a locking ring and a limit rod. The output end of the lifting cylinder is provided with a limit rod along the extension line of the moving direction. The surface of the limit rod is fixedly connected with a telescopic column. Vibrator.

Preferably, sliding grooves are provided on the top and right side of the diagnostic box, and two bearing plates are arranged symmetrically on both sides of the top of the diagnostic box, and a groove is opened inside one of the bearing plates, and the groove is arranged directly above the sliding groove.

Preferably, the rotating assembly includes a socket post, a detection ring, a rotating shaft and a rotating motor. A rotating motor is arranged inside the U-shaped plate. The output end of the rotating motor is fixedly connected to a rotating shaft. The surface of the rotating shaft is fixedly connected to a socketing post.

Preferably, a control switch is fixedly connected to the front of the diagnostic box, and a computer is arranged inside the diagnostic box.

Preferably, a receiving column is provided inside the testing box, and the top end of the receiving column fits with the bottom end of the telescopic column inside the testing box, and a computer is also provided on one side of the receiving column.

Preferably, the cross section of the sliding groove is an inverted L shape, one of the telescopic columns is arranged directly above one end of the sliding groove, and the other telescopic column is arranged on the same level as the other end of the sliding groove.

Preferably, the diameter of the inner wall of the telescopic column is greater than the diameter of the outer wall of the socket column, and the diameter of the inner wall of the locking ring is greater than the diameter of the inner wall of the telescopic column.

Preferably, the distance between the vertical end of the L-shaped plate and the second plunger is greater than the length of the bottom end of the U-shaped plate, and the distance between the vertical end of the L-shaped plate and the second plunger is smaller than the length of the side of the U-shaped plate.

Preferably, the side of the telescopic column away from the lifting cylinder is arranged parallel to the side of the limit plate, and the vibrating plate is arranged perpendicular to the detection head.

Compared with the prior art, the present invention has the following beneficial effects:

1. In the present invention, through the setting of the adjustment assembly, since the top of the first hydraulic pump is fixedly connected with the first plunger, the top of the first plunger is fixedly connected with the L-shaped plate, the top of the second hydraulic pump is fixedly connected with the second plunger, the top of the second plunger is fixedly connected with the U-shaped plate, the open end of the U-shaped plate is provided with one side of the rotating assembly, the bottom of the U-shaped plate fits with the top of the L-shaped plate, and the two hydraulic pumps are controlled independently. The docking assembly detects it, and then starts the first hydraulic pump to retract the first plunger, so that the balance point of the entire rotating assembly will shift. Under the action of the rotating motor’s own gravity, the left side of the rotating assembly drops, and the right side rises, and then start the second hydraulic pump to push out the second plunger, and a snap-fit groove is formed between the second plunger and the L-shaped plate. , until the rolling bearing changes from a vertical state to a horizontal state, then stop the work of the two hydraulic pumps, and use the docking assembly inside the fixed box to perform a secondary inspection on the rolling bearing, which optimizes the equipment and improves work efficiency.

2. In the present invention, through the setting of the docking assembly, since the output end of the lifting cylinder is fixedly connected to the limit rod, the surface of the limit rod is fixedly connected to the telescopic column, and one end of the limit rod is fixedly connected to the limit plate, and the side of the limit plate away from the limit rod is ring-shaped with a plurality of detection heads at the same interval. There are vibrating plates inside the grooves. Vibrating plates can be used to detect the vibration frequency of the outer ring of the rolling bearing, and the detection ring can be used to detect the vibration frequency of the inner ring of the rolling bearing. Then these vibration frequencies are sent to the computer for comparison and processing, so as to effectively obtain the fault range of the rolling bearing.

3. In the present invention, through the setting of the rotating assembly and the locking ring, the rotation of the rotating shaft can simulate the driving state of a high-speed locomotive. Since the outer ring of the rolling bearing is also connected with other components, the locking ring can stabilize the rolling bearing on the one hand, and on the other hand, simulate the situation where the rolling bearing contacts with other components, ensuring the quantitative detection environment, and can change the rotating speed of the rotating shaft by rotating the motor, and then simulate the process of changing the speed of the locomotive, ensuring the stability of the testing environment.

Description of drawings

Fig. 1 is a three-dimensional structural schematic diagram of a variable speed fault diagnosis device for rolling bearings of high-speed locomotives according to the present invention;

Fig. 2 is a sectional view of the diagnostic box in Fig. 1 of the present invention;

Fig. 3 is a sectional view of the detection box in Fig. 1 of the present invention;

Fig. 4 is a schematic diagram of the three-dimensional structure of the diagnostic box in Fig. 1 of the present invention;

Fig. 5 is a sectional view of the fixed box in Fig. 1 of the present invention;

Fig. 6 is a sectional view of the socket column in Fig. 1 of the present invention;

Figure 7 is a sectional view of the telescopic column in Figure 1 of the present invention;

Fig. 8 is a schematic diagram of the three-dimensional structure of the limiting plate in Fig. 7 of the present invention;

Fig. 9 is a bottom view of the telescopic column in Fig. 7 of the present invention.

Among the figure: 1, diagnostic box; 2, control switch; 3, bearing plate; 4, fixed box; 5, lifting cylinder; 6, telescopic column; 7, groove; 8, sliding groove; 21. Computer; 22. Receiving column; 23. Thread ring; 24. Locking ring; 25. Detection head; 26. Limit plate; 27. Limit rod; 28. Placement groove;

Detailed ways

In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end" and "another end" are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and should not be understood as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise specified and limited, the terms "installed", "provided with", and "connected" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, or it can be an internal connection between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

1-9, this embodiment includes a diagnostic box 1, a fixed box 4 arranged on the top of the diagnostic box 1 and a detection box 13 arranged on one side of the diagnostic box 1. A rotating assembly is arranged inside the diagnostic box 1, an adjusting assembly is arranged at the bottom of the rotating assembly, a group of docking assemblies is arranged vertically inside the fixed box 4, and another group of docking assemblies is arranged horizontally inside the testing box 13. The comparison results are given and displayed on the control switch 2. The top and right sides of the diagnostic box 1 are provided with sliding grooves 8. Two load-bearing plates 3 are arranged symmetrically on both sides of the top of the diagnostic box 1. A groove 7 is opened inside one of the load-bearing plates 3. The groove 7 is arranged directly above the sliding groove 8.

The adjustment assembly includes a first hydraulic pump 14, an L-shaped plate 16, a second hydraulic pump 17 and a U-shaped plate 19. The inner bottom of the diagnosis box 1 is provided with a first hydraulic pump 14, and the output end of the first hydraulic pump 14 is provided with a first plunger 15 along the extension line of the moving direction. The top of the U-shaped plate 19 is fixedly connected with a U-shaped plate 19, the open end of the U-shaped plate 19 is provided with one side of the rotating assembly, the bottom of the U-shaped plate 19 fits the top of the L-shaped plate 16, the distance between the vertical end of the L-shaped plate 16 and the second plunger 18 is greater than the bottom length of the U-shaped plate 19, and the distance between the vertical end of the L-shaped plate 16 and the second plunger 18 is less than the side length of the U-shaped plate 19.

The rotating assembly includes a socket post 9, a detection ring 10, a rotating shaft 12 and a rotating motor 20. A rotating motor 20 is arranged inside the U-shaped plate 19. The output end of the rotating motor 20 is fixedly connected to the rotating shaft 12. The surface of 23 is threadedly connected with threaded ring 11, and the two hydraulic pumps are controlled independently. When testing the rolling bearing, firstly, the rolling bearing is sleeved on the testing ring 10, and is detected by the docking assembly inside the testing box 13, and then the first hydraulic pump 14 is started to retract the first plunger 15, so that the balance point of the entire rotating assembly will shift. A clamping slot is formed between 16, and the U-shaped plate 19 rotates inside the clamping slot under the action of the thrust, and the sliding slot 8 restricts the rotation of the socket column 9. The side of the L-shaped plate 16 and the raised second plunger 18 play a position-limiting role until the rolling bearing changes from a vertical state to a horizontal state.

The docking assembly includes a lifting cylinder 5, a telescopic column 6, a locking ring 24 and a limit rod 27. The output end of the lifting cylinder 5 is provided with a limit rod 27 along the extension line of the moving direction. The vibration frequency of telescopic column 6 is fixedly connected with locking ring 24 on the side away from lifting cylinder 5. The rotation of rotating shaft 12 can simulate the driving state of a high-speed locomotive. Since the outer ring of rolling bearing is also connected with other components, using locking ring 24 can stabilize the rolling bearing on the one hand, and on the other hand, it can simulate the situation that rolling bearing contacts with other components, ensuring the quantitative detection environment, and can change the rotating speed of rotating shaft 12 by rotating the motor 20, and then simulate the process of changing the speed of the locomotive, ensuring the stability of the testing environment.

The diameter of the inner wall of the telescopic column 6 is greater than the diameter of the outer wall of the socket column 9, and the diameter of the inner wall of the locking ring 24 is greater than the diameter of the inner wall of the telescopic column 6. The inside of the locking ring 24 is symmetrically provided with two placement grooves 28, and the inside of the two placement grooves 28 is respectively provided with a vibrating piece 29. The vibration frequency of the outer ring of the rolling bearing can be detected by using the vibrating piece 29, and the vibration frequency of the inner ring of the rolling bearing can be detected by using the detection ring 10. The bottom ends of the telescopic columns 6 inside the box 13 fit together, and a computer 21 is provided on one side of the receiving column 22, and then these vibration frequencies are sent to the computer 21 for comparison processing, thereby effectively obtaining the fault range of the rolling bearing. State and level state, get different data, and then judge the fault area of the rolling bearing more accurately.

The working principle of the present invention is: after the equipment is powered on, the threaded ring 11 is removed, and then the rolling bearing that needs to be diagnosed is inserted on the detection ring 10 to detect the vibration frequency of the inner ring of the rolling bearing, and then the lifting cylinder 5 in the detection box 13 is started, and the telescopic column 6 is pushed forward until the outer ring of the rolling bearing is engaged with the locking ring 24, and a plurality of detection heads 25 extend into the gap between the balls to detect the vibration frequency of the air in the ball. Vibrating pieces 29 are respectively arranged inside the two placing grooves 28, and the vibration frequency of the outer ring of the rolling bearing can be detected by using the vibrating piece 29, so that the vibration frequencies of different components of the rolling bearing can be detected at one time, and the computer 21 is used to judge, and then the first hydraulic pump 14 and the second hydraulic pump 17 are started. , the bottom end of the L-shaped plate 16 is connected to the bottom end of the U-shaped plate 19, and the side of the L-shaped plate 16 and the raised second plunger 18 play a position-limiting role until the sleeve column 9 fits one side of the sliding groove 8, and then stop the work of the two hydraulic pumps, and use the docking assembly inside the fixed box 4 to carry out secondary detection on the rolling bearing, thereby effectively obtaining the fault range of the rolling bearing.

The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above. Those skilled in the art should understand that the present invention is not limited by the above-mentioned embodiments. What are described in the above-mentioned embodiments and the description only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention also has various changes and improvements, and these changes and improvements all fall within the scope of the claimed invention. The protection scope of the present invention is defined by the appended claims and their equivalents.

Claims

A variable-speed fault diagnosis device for rolling bearings of high-speed locomotives, characterized in that it comprises a diagnostic box (1), a fixed box (4) arranged at the top of the diagnostic box (1), and a detection box (13) arranged at one side of the diagnostic box (1), a rotating assembly is arranged inside the diagnostic box (1), an adjusting assembly is arranged at the bottom of the rotating assembly, a group of docking assemblies is arranged vertically inside the fixed box (4), and another group of docking assemblies is arranged horizontally inside the inspection box (13);

The adjustment assembly includes a first hydraulic pump (14), an L-shaped plate (16), a second hydraulic pump (17) and a U-shaped plate (19). The inner bottom of the diagnostic box (1) is provided with a first hydraulic pump (14), and the output end of the first hydraulic pump (14) is provided with a first plunger (15) along the extension line of the moving direction. The hydraulic pump (17), the output end of the second hydraulic pump (17) is provided with a second plunger (18) along the extension line of the moving direction, the top of the second plunger (18) is fixedly connected with the bottom right side of the U-shaped plate (19), the open end of the U-shaped plate (19) is provided with one side of the rotating assembly, and the bottom of the U-shaped plate (19) fits with the top of the L-shaped plate (16);

The docking assembly includes a lifting cylinder (5), a telescopic column (6), a locking ring (24) and a limiting rod (27). The output end of the lifting cylinder (5) is provided with a limiting rod (27) along the extension line of the moving direction. A plurality of detection heads (25) are provided, and a locking ring (24) is fixedly connected to the side of the telescopic column (6) away from the lifting cylinder (5), and two placement grooves (28) are symmetrically opened inside the locking ring (24), and vibrating plates (29) are respectively arranged inside the two placement grooves (28).
A variable-speed fault diagnosis device for rolling bearings of high-speed locomotives according to claim 1, characterized in that sliding grooves (8) are provided on the top and right sides of the diagnostic box (1), two bearing plates (3) are symmetrically arranged on both sides of the top of the diagnostic box (1), and a groove (7) is opened inside one of the bearing plates (3), and the groove (7) is arranged directly above the sliding groove (8).
A variable speed fault diagnosis device for high-speed locomotive rolling bearings according to claim 2, characterized in that: the rotating assembly includes a socket column (9), a detection ring (10), a rotating shaft (12) and a rotating motor (20), a rotating motor (20) is arranged inside the U-shaped plate (19), the output end of the rotating motor (20) is fixedly connected to a rotating shaft (12), the surface of the rotating shaft (12) is fixedly connected to a socketing column (9), the socketing column (9) The surface fits with the sliding groove (8), and the side of the socket post (9) away from the rotating motor (20) is fixedly connected with a detection ring (10), the side of the rotating shaft (12) away from the rotating motor (20) is fixedly connected with a threaded ring (23), and the surface of the threaded ring (23) is threadedly connected with a threaded ring (11).
A variable-speed fault diagnosis device for high-speed locomotive rolling bearings according to claim 3, characterized in that: a control switch (2) is fixedly connected to the front of the diagnostic box (1), and a computer (21) is arranged inside the diagnostic box (1).
A variable-speed fault diagnosis device for rolling bearings of high-speed locomotives according to claim 4, characterized in that: the inside of the detection box (13) is provided with a receiving column (22), the top of the receiving column (22) is attached to the bottom end of the telescopic column (6) inside the testing box (13), and a computer (21) is also provided on one side of the receiving column (22).
A variable speed fault diagnosis device for rolling bearings of high-speed locomotives according to claim 5, characterized in that: the cross section of the sliding groove (8) is an inverted L shape, one of the telescopic columns (6) is arranged directly above one end of the sliding groove (8), and the other telescopic column (6) is arranged on the same horizontal line as the other end of the sliding groove (8).
A variable speed fault diagnosis device for rolling bearings of high-speed locomotives according to claim 6, characterized in that: the diameter of the inner wall of the telescopic column (6) is greater than the diameter of the outer wall of the socket column (9), and the diameter of the inner wall of the locking ring (24) is greater than the diameter of the inner wall of the telescopic column (6).
A variable speed fault diagnosis device for rolling bearings of high-speed locomotives according to claim 7, characterized in that: the distance between the vertical end of the L-shaped plate (16) and the second plunger (18) is greater than the length of the bottom end of the U-shaped plate (19), and the distance between the vertical end of the L-shaped plate (16) and the second plunger (18) is smaller than the length of the side of the U-shaped plate (19).
A variable-speed fault diagnosis device for high-speed locomotive rolling bearings according to claim 8, characterized in that: the side of the telescopic column (6) away from the lifting cylinder (5) is arranged parallel to the side of the limit plate (26), and the vibrating plate (29) is arranged perpendicular to the detection head (25).