Motor train unit bearing box bearing vibration test experiment table

Abstract

The utility model belongs to the technical field of bearing testing, and particularly relates to a motor train unit bearing box bearing vibration testing experiment table which comprises a bearing testing vibration machine, a vibration table is installed on the bearing testing vibration machine, a fixing mechanism used for fixing a bearing is installed on the vibration table, and the fixing mechanism comprises a connecting base fixed to the vibration table. A connecting plate is installed at the top of the connecting base, a supporting plate is installed on the connecting plate through an angle adjusting assembly, a clamping assembly is installed on the supporting plate and comprises two supporting tables installed on the supporting plate, and limiting plates are installed on the sides, close to the supporting plate, of the supporting tables. According to the utility model, the improvement in the aspects of fixing and adapting to different bearing models is obvious, the stability and the applicability are enhanced, meanwhile, various bearing test states including a horizontal state, an inclined state, a rotating state and the like are provided, more flexible and accurate vibration control is brought to an operator, and the accuracy and the operability of the test are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of bearing testing, and in particular relates to a vibration testing test bench for a bearing box of an electric train set. Background Art

[0002] Axlebox bearings are crucial components for ensuring stable operation of EMU trains, supporting the wheels and reducing friction during operation. However, the proper performance of these bearings is directly linked to the safety and stability of the trains. Bearing problems can lead to instability and excessive vibration during train operation, potentially threatening passenger safety.

[0003] Testing the vibration characteristics of EMU axlebox bearings is crucial. Previous testing methods often only perform tests under specific vibration conditions, making it difficult to accurately reproduce the vibration behavior of bearings under different operating conditions. Existing testing equipment often lacks versatility, failing to provide comprehensive testing options and flexibility. This limitation can hinder the accurate assessment of bearing performance and restrict a comprehensive understanding of bearing quality and stability. Utility Model Content

[0004] The utility model aims to provide a vibration test bench for a bearing box of an EMU, which can provide a variety of bearing test states.

[0005] The technical solutions adopted by this utility model are as follows:

[0006] 7. The swiftly and minutely adjusting device for a wood-planer working table as claimed in claim 1, wherein said linking rod and said adjusting base are pivotally connected to each other with a bolt, and said bolt has a round shank to contact with said linking rod. said linking rod is pivotally connected to said linking rod. said linking rod is pivotally connected to said linking rod.

[0007] The angle adjustment mechanism includes a transmission rod fixed at the bottom end of the support plate, and a first rotation groove adapted to the support plate and the transmission rod is opened on the connecting plate. The bottom end of the support plate and the transmission rod are both located on the inner side of the first rotation groove on the connecting plate. A first stepper motor is installed on one side of the connecting plate, and the output end of the first stepper motor is fixedly connected to the transmission rod.

[0008] The displacement assembly includes a first threaded rod threadedly connected to the upper end of the support plate, a circular rotating disk is fixed to the bottom end of the first threaded rod, a limiting groove adapted to the limiting plate is installed on the support plate, one of the limiting plates close to the connecting seat is fixed on the inner side of the limiting groove of the support plate, the support plate and the other limiting plate are slidingly connected through the setting of the positioning groove, and the other limiting plate is rotatably connected to the circular rotating disk.

[0009] The clamping assembly also includes two flat cones, one of which is installed on the top of one of the circular rotating tables close to the connecting seat, and the other is installed on the bottom of the other circular rotating table, and the two flat cones are symmetrically arranged.

[0010] A rotating ring is installed on the outer side of the circular rotating table, and a third rotating groove adapted to the rotating ring and the circular rotating table is opened on the inner side of the supporting table. The circular rotating table and the rotating ring are both located on the inner side of the third rotating groove.

[0011] The support plate is further provided with a positioning assembly, which includes a second threaded rod threadedly connected to one side of the top of the support plate, and an elastic block is installed at one end of the second threaded rod close to the first threaded rod.

[0012] The technical effects achieved by this utility model are:

[0013] This new model offers significant improvements in securing and adapting to different bearing models, enhancing stability and applicability. It also provides multiple bearing test positions, including horizontal, tilted, and rotated, providing operators with more flexible and precise vibration control, improving test accuracy and operability. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the support plate in the present invention;

[0016] Figure 3 This is a structural diagram of the support platform in the utility model;

[0017] Figure 4 It is a structural schematic diagram of the limiting plate and the circular rotating disk in the utility model.

[0018] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0019] 1. Bearing test vibration machine; 2. Vibration table; 3. Connecting seat; 4. Connecting plate; 5. First stepper motor; 6. Support plate; 7. Transmission rod; 8. Support table; 9. Circular rotating table; 10. Rotating ring; 11. Flat cone; 12. Mounting seat; 13. Second stepper motor; 14. Limiting plate; 15. First threaded rod; 16. Circular rotating disk; 17. Second threaded rod; 18. Elastic block. DETAILED DESCRIPTION

[0020] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is described in detail below with reference to the following embodiments. It should be understood that the following text is only used to describe one or several specific embodiments of the present invention and does not strictly limit the scope of protection of the present invention. Example 1

[0021] like Figure 1-4 As shown, a vibration test bench for a bearing box of an EMU train comprises a bearing test vibration machine 1 and a vibration table 2 mounted thereon, wherein a fixing mechanism for fixing the bearing is mounted on the vibration table 2;

[0022] The bearing test vibration machine 1 and vibration table 2 are both existing mature technologies, wherein the bearing test vibration machine 1 includes a drive system, measurement and monitoring equipment, and a control system;

[0023] The driving system can generate vibration and transmit it to the vibration table 2;

[0024] Measurement and monitoring equipment used to record and analyze bearing vibration data, including accelerometers, vibration sensors, data loggers, and real-time monitoring systems;

[0025] The control system controls the drive system, measurement and monitoring equipment, and includes a control panel, computer software and algorithms for setting and adjusting parameters such as vibration frequency and amplitude. This embodiment will not be described in detail. The core solution of this technical solution lies in the specific structure of the fixing mechanism.

[0026] The fixing mechanism includes a connecting base 3 fixed on the vibration table 2, and a connecting plate 4 is installed on the top of the connecting base 3, which can provide a stable support for the connecting plate 4;

[0027] Refer to the attached Figure 1 and attached Figure 2A support plate 6 is installed on the connecting plate 4 through an angle adjustment assembly. The angle adjustment mechanism includes a transmission rod 7 fixed to the bottom end of the support plate 6. A first rotation groove adapted to the support plate 6 and the transmission rod 7 is opened on the connecting plate 4. The bottom end of the support plate 6 and the transmission rod 7 are both located on the inner side of the first rotation groove on the connecting plate 4. A first stepper motor 5 is installed on one side of the connecting plate 4. The output end of the first stepper motor 5 is fixedly connected to the transmission rod 7. Through the setting of the first rotation groove, the support plate 6 and the transmission rod 7 can be rotated around the output end of the first stepper motor 5. At the same time, the setting of the first rotation groove can limit the deflection, lateral and vertical movement of the support plate 6 and the transmission rod 7.

[0028] Refer to the attached Figure 1 -Attached Figure 3 , a clamping assembly is installed on the support plate 6, and the clamping assembly includes two support platforms 8 installed on the support plate 6. A limit plate 14 is installed on the side of the support platform 8 close to the support plate 6, one of the limit plates 14 is fixedly connected to the support plate 6, and the other limit plate 14 is installed on the support plate 6 through a displacement assembly, and the displacement assembly includes a first threaded rod 15 threadedly connected to the upper end of the support plate 6, and a circular rotating disk 16 is fixed to the bottom end of the first threaded rod 15, and the diameter of the circular rotating disk 16 is set to be larger than the diameter of the first threaded rod 15;

[0029] Refer to the attached Figure 1 -Attached Figure 4 A limiting groove of an adaptable limiting plate 14 is installed on the support plate 6, and one of the limiting plates 14 close to the connecting seat 3 is fixed to the inner side of the limiting groove of the support plate 6, and the support plate 6 is slidably connected to the other limiting plate 14 through the setting of the positioning groove, and the other limiting plate 14 is rotatably connected to the circular rotating disk 16, and a second rotating groove adapted for the circular rotating disk 16 is opened on the top of the other limiting plate 14, and the circular rotating disk 16 is located on the inner side of the second rotating groove. Through the setting of the second rotating groove and the limiting groove, when the first threaded rod 15 and the circular rotating disk 16 rotate, through the setting of the second rotating groove and the limiting groove, the other limiting plate 14 can drive the other support platform 8 to move vertically and horizontally, thereby preventing it from deflecting, rotating, and moving horizontally and vertically, thereby playing a limiting role;

[0030] Refer to the attached Figure 1 and attached Figure 3 A circular rotating table 9 is installed inside the support table 8, a rotating ring 10 is installed on the outside of the circular rotating table 9, and a third rotating groove adapted to the rotating ring 10 and the circular rotating table 9 is opened on the inner side of the support table 8. The circular rotating table 9 and the rotating ring 10 are both located on the inner side of the third rotating groove. The circular rotating table 9 and the support table 8 are rotatably connected through the setting of the rotating ring 10 and the third rotating groove, and through the setting of the rotating ring 10 and the third rotating groove, it is possible to limit the circular rotating table 9 to rotate only on the inner side of the support table 8.

[0031] Refer to the attached Figure 1 -Attached Figure 3 , a flat cone 11 is fixed to each end of the two circular rotating tables 9 close to each other by bolts, and the diameter of the flat cone 11 is adapted to the inner diameter of the bearing to be tested;

[0032] In addition, the clamping assembly also includes two flat cones 11, the diameter of one end of the flat cone 11 is larger than the diameter of the other end, one of the flat cones 11 is fixed to the top of one of the circular rotating tables 9 near the connecting seat 3 by bolts, and the other flat cone 11 is fixed to the bottom of the other circular rotating table 9 by bolts. The two flat cones 11 are symmetrically arranged, and the small diameter ends are close to each other, forming an arrangement of one above and one below.

[0033] A mounting seat 12 is fixed to the bottom of one of the support platforms 8 near the connecting seat 3, and the mounting seat 12 is located on the outside of the third rotating groove on the support platform 8. A second stepper motor 13 is installed on the mounting seat 12, and the output end of the second stepper motor 13 is fixedly connected to the circular rotating table 9.

[0034] According to the above structure, when performing a vibration test on a bearing, the bearing can be placed horizontally on the outside of the top of one of the flat cones 11 near the connecting seat 3. At this time, the first threaded rod 15 is rotated, so that a limit plate 14 and the support platform 8 near the first threaded rod 15 can move toward the bearing. The bearing can then be clamped between the two support platforms 8 and the two flat cones 11 to ensure that the bearing position is firmly and stably fixed. The mobility of one of the support platforms 8 allows the device to adapt to bearings of different heights. In addition, by optimizing the shape of the two flat cones 11, the device can adapt to bearings with a wider range of inner diameter sizes, thereby significantly improving its versatility and range of applicability.

[0035] When the bearing is subjected to a vibration test, the first stepper motor 5 is operated to cause the transmission rod 7 to drive the support plate 6 to rotate, thereby adjusting the tilt angle of the support plate 6 or allowing it to swing, so that the bearing can be subjected to a vibration test in a tilted or swinging state;

[0036] When the vibration test is performed on the bearing, the second stepper motor 13 can be used to rotate the circular rotating table 9, thereby driving the clamped bearing to rotate, so that the bearing can be subjected to vibration testing in a rotating state;

[0037] In summary, this utility model significantly optimizes bearing fixation and adaptability to different models, enhancing fixation and equipment applicability. Furthermore, it provides a variety of bearing test states, including horizontal, tilted, rotational, swinging, tilted rotation, and horizontal rotation, thus achieving a more comprehensive, multi-dimensional testing method. The selectivity of these different states allows operators to flexibly control vibration conditions as needed, significantly improving test accuracy and controllability. This diversity provides more detailed and realistic data support for bearing performance evaluation, effectively ensuring bearing reliability and stability under various operating conditions. Example 2

[0038] Refer to the attached Figure 1 and attached Figure 2 This embodiment adds a positioning component based on embodiment 1. The positioning component includes a second threaded rod 17 threadedly connected to one side of the top of the support plate 6. An elastic block 18 is installed at one end of the second threaded rod 17 close to the first threaded rod 15.

[0039] According to the above structure, when the first threaded rod 15 is rotated to clamp the bearing between the two flat cones 11, the second threaded rod 17 can be rotated to make the elastic block 18 fit tightly against the outside of the first threaded rod 15. This design helps to position the first threaded rod 15, prevents it from rotating unintentionally during vibration testing, and effectively improves clamping stability.

[0040] The above is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art may make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications should be considered within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained in this invention shall, unless otherwise specified or limited, be implemented in accordance with conventional means in the art.

Claims

1. A bearing vibration test bench for a train set bearing housing, comprising a bearing test vibration machine (1), a vibration table (2) mounted on the bearing test vibration machine (1), and characterized in that: The vibration table (2) is provided with a fixing mechanism for fixing the bearing, the fixing mechanism comprising a connecting seat (3) fixed on the vibration table (2), a connecting plate (4) being installed on the top of the connecting seat (3), and a support plate (6) being installed on the connecting plate (4) via an angle adjustment component, a clamping component being installed on the support plate (6), the clamping component comprising two support tables (8) installed on the support plate (6), a limiting plate (14) being installed on a side of the support table (8) close to the support plate (6), one of the limiting plates (14) being fixedly connected to the support plate (6), and the other limiting plate (14) being installed on the support plate (6) via a displacement component, the internal rotation of the support table (8) being connected to a circular rotating table (9), a second stepping motor (13) being installed on one of the support tables (8) close to the connecting seat (3), and an output end of the second stepping motor (13) being fixedly connected to the circular rotating table (9).

2. The EMU bearing box bearing vibration test bench according to claim 1, characterized in that: The angle adjustment assembly comprises a transmission rod (7) fixed to the bottom end of the support plate (6); a first rotation groove adapted to the support plate (6) and the transmission rod (7) is provided on the connecting plate (4); the bottom end of the support plate (6) and the transmission rod (7) are both located on the inner side of the first rotation groove on the connecting plate (4); a first stepper motor (5) is installed on one side of the connecting plate (4); and an output end of the first stepper motor (5) is fixedly connected to the transmission rod (7).

3. The EMU bearing box bearing vibration test bench according to claim 1, characterized in that: The displacement assembly comprises a first threaded rod (15) threadedly connected to the upper end of the support plate (6), a circular rotating disk (16) is fixed to the bottom end of the first threaded rod (15), a limiting groove adapted to the limiting plate (14) is installed on the support plate (6), one of the limiting plates (14) close to the connecting seat (3) is fixed on the inner side of the upper limiting groove of the support plate (6), the support plate (6) and the other limiting plate (14) are slidably connected through the setting of the positioning groove, and the other limiting plate (14) is rotatably connected to the circular rotating disk (16).

4. The EMU bearing box bearing vibration test bench according to claim 1, characterized in that: The clamping assembly further comprises two flat cones (11), wherein one of the flat cones (11) is mounted on the top of one of the circular rotating platforms (9) close to the connecting seat (3), and the other flat cone (11) is mounted on the bottom of the other circular rotating platform (9), and the two flat cones (11) are symmetrically arranged.

5. The EMU bearing box bearing vibration test bench according to claim 3 is characterized by: A second rotation groove adapted to the circular rotating disk (16) is provided on the top of one of the limiting plates (14) close to the circular rotating disk (16), and the circular rotating disk (16) is located inside the second rotation groove.

6. The EMU bearing box bearing vibration test bench according to claim 1, characterized in that: A rotating ring (10) is installed on the outer side of the circular rotating platform (9), and a third rotating groove adapted to fit the rotating ring (10) and the circular rotating platform (9) is opened on the inner side of the supporting platform (8), and the circular rotating platform (9) and the rotating ring (10) are both located on the inner side of the third rotating groove.

7. The EMU bearing box bearing vibration test bench according to claim 6, characterized in that: A mounting seat (12) is fixed to the bottom of one of the support platforms (8) near the connecting seat (3), and the mounting seat (12) is located outside the third rotating groove on the support platform (8), and the second stepping motor (13) is mounted on the mounting seat (12).

8. The EMU bearing box bearing vibration test bench according to claim 1, characterized in that: The support plate (6) is also provided with a positioning assembly, which comprises a second threaded rod (17) threadedly connected to one side of the top of the support plate (6), and an elastic block (18) is installed at one end of the second threaded rod (17) close to the first threaded rod (15).

Images