Bullet train wheel bearing crack detection device

Abstract

The utility model discloses a bullet train wheel bearing crack detection device which comprises a bearing base plate and an ultrasonic probe, a supporting square column is fixedly installed on the top face of the bearing base plate, a connecting square block is arranged at the top end of the supporting square column, a connecting straight shaft is installed on the surface of the front side of the connecting square block, and the connecting straight shaft is connected with the ultrasonic probe. A limiting circular plate is installed at the front end of the connecting straight shaft, a center positioning shaft is arranged in the center of the front surface of the limiting circular plate, and a supporting stud is installed in the center of the top end of the connecting square block. According to the crack detection device for the bullet train wheel bearing, a proper number of ultrasonic probes can be mounted according to positioning through holes in different positions on the combined straight plate, so that deep crack detection is subsequently performed on the bullet train wheel bearing positioned and mounted on the central positioning shaft, and internal detection is performed according to a pulse reflection method; in addition, the combined straight plate can be lifted at different heights on the supporting studs through the adjusting ring sleeves and the limiting sliding blocks, and attaching is convenient and stable.

Description

Technical Field

[0001] This utility model relates to the field of high-speed train wheel inspection technology, specifically a device for detecting cracks in high-speed train wheel bearings. Background Technology

[0002] High-speed train wheels are a crucial component in the assembly of high-speed train sets. Their design and manufacturing standards are far higher than those of ordinary railway wheels. Therefore, when inspecting high-speed train wheels, including detecting cracks in the wheel bearings using ultrasonic depth testing, the following problems still exist with current market devices for detecting cracks in high-speed train wheel bearings:

[0003] After the train wheel bearing is positioned, an ultrasonic probe is used to fit the bearing surface. However, during the overall docking and assembly process, the ultrasonic probe needs to be kept in contact with the bearing surface for a long time. Simply operating it by hand is not stable enough and it is easy to tilt or misalign.

[0004] To address the aforementioned issues, an innovative design was developed based on the existing device for detecting cracks in train wheel bearings. Utility Model Content

[0005] The purpose of this utility model is to provide a device for detecting cracks in train wheel bearings, in order to solve the problem mentioned in the background art that the commonly used devices for detecting cracks in train wheel bearings on the market, after positioning the train wheel bearing, subsequently use an ultrasonic probe to fit the bearing surface. However, during the overall docking and assembly process, it is necessary to keep the ultrasonic probe and the bearing surface in contact for a long time. Simple hand operation is not stable enough and is prone to tilting and misalignment.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a device for detecting cracks in train wheel bearings, comprising a load-bearing base plate and an ultrasonic probe. A supporting column is fixedly installed on the top surface of the load-bearing base plate, and a connecting block is provided at the top of the supporting column. A connecting straight shaft is installed on the front surface of the connecting block, and a limiting circular plate is installed at the front end of the connecting straight shaft. A central positioning shaft is provided at the center of the front surface of the limiting circular plate. A supporting stud is installed at the center of the top of the connecting block, and a groove is provided on the curved front side of the supporting stud. An adjusting ring is fitted onto the outer side of the stud, and a limiting slider is installed on the inner wall of the adjusting ring. The limiting slider is connected to a sliding groove. A combined straight plate is installed on the curved front side of the adjusting ring, and a positioning through hole is opened at the front end of the combined straight plate. An ultrasonic probe is installed through the positioning through hole. A combined circular sleeve is installed above the adjusting ring, and the combined circular sleeve is fitted onto the outer side of the supporting stud. A lever is installed on the outer curved surface of the combined circular sleeve. A supporting spring is installed below the adjusting ring, and the supporting spring is installed around the outer side of the supporting stud.

[0007] Preferably, the connecting block, the supporting column, and the connecting shaft are integrated into a single structure, and the connecting shaft and the limiting circular plate are connected by a bearing. The limiting circular plate and the central positioning shaft are integrated into a single structure, and the diameter of the limiting circular plate is larger than the diameter of the central positioning shaft.

[0008] Preferably, the support stud is connected to the connecting block by welding, and the support stud is connected to the adjusting ring by sliding connection.

[0009] Preferably, the adjusting ring and the limiting slider are integrated into one structure, and the limiting slider and the slide groove are connected by a sliding connection.

[0010] Preferably, the combined straight plate has positioning through holes evenly distributed, and the positioning through holes are connected to the ultrasonic probe by embedding and fixing, and the combined straight plate is connected to the adjusting ring by welding and fixing.

[0011] Preferably, the combined sleeve and the lever are integrated into one structure, and the levers are symmetrically distributed on the combined sleeve. The combined sleeve and the support stud are connected by a threaded connection.

[0012] Compared with the prior art, the beneficial effects of this utility model are: the device for detecting cracks in train wheel bearings,

[0013] 1. Based on the positioning through holes at different positions on the combined straight plate, an appropriate number of ultrasonic probes can be installed, thereby enabling subsequent deep crack detection of the train wheel bearings positioned on the central positioning shaft. Internal detection is performed using the pulse reflection method. Furthermore, the combined straight plate can be raised and lowered at different heights on the support stud by adjusting the ring sleeve and the limit slider, facilitating a smooth fit.

[0014] 2. The staff can move the combined sleeve by lever, and the combined sleeve can be raised and lowered on the support stud. The height position of the adjusting ring sleeve on the support stud can be limited and adjusted. The adjusting ring sleeve maintains an upward thrust according to the elastic force of the support spring. The overall lifting and adjustment operation is convenient and quick, which facilitates the subsequent installation of the train wheel bearing and the contact detection of the ultrasonic probe with the surface of the train wheel bearing. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall assembled three-dimensional structure of this utility model;

[0016] Figure 2 This utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0017] Figure 3 This is a schematic diagram of the combined straight plate rising three-dimensional structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the three-dimensional structure of the combined circular sleeve of this utility model;

[0019] Figure 5 This is a schematic diagram of the three-dimensional structure of the adjusting ring and the combined straight plate of this utility model.

[0020] In the diagram: 1. Load-bearing base plate; 2. Supporting square column; 3. Connecting block; 4. Connecting straight shaft; 5. Limiting circular plate; 6. Center positioning shaft; 7. Supporting stud; 8. Slide groove; 9. Adjusting ring sleeve; 10. Limiting slider; 11. Combined straight plate; 12. Positioning through hole; 13. Ultrasonic probe; 14. Combined circular sleeve; 15. Lever; 16. Supporting spring. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-5This utility model provides a technical solution: a device for detecting cracks in train wheel bearings, comprising a load-bearing base plate 1 and an ultrasonic probe 13. A supporting square column 2 is fixedly installed on the top surface of the load-bearing base plate 1, and a connecting block 3 is provided at the top of the supporting square column 2. A connecting straight shaft 4 is installed on the front surface of the connecting block 3, and a limiting circular plate 5 is installed at the front end of the connecting straight shaft 4. A central positioning shaft 6 is provided at the center of the front surface of the limiting circular plate 5. A supporting stud 7 is installed at the center of the top of the connecting block 3, and a sliding groove 8 is provided on the curved front side of the supporting stud 7. An adjusting ring is sleeved on the outer side of the supporting stud 7. The adjusting ring sleeve 9 has a limiting slider 10 installed on its inner wall, and the limiting slider 10 is connected to the slide groove 8. A combined straight plate 11 is installed on the curved front side of the adjusting ring sleeve 9, and a positioning through hole 12 is opened at the front end of the combined straight plate 11. An ultrasonic probe 13 is installed through the positioning through hole 12. A combined circular sleeve 14 is installed above the adjusting ring sleeve 9, and the combined circular sleeve 14 is sleeved and installed on the outside of the support stud 7. A lever 15 is installed on the outer curved surface of the combined circular sleeve 14. A support spring 16 is installed below the adjusting ring sleeve 9, and the support spring 16 is installed around the outside of the support stud 7.

[0023] The connecting block 3, the supporting column 2, and the connecting straight shaft 4 are integrated into a single structure. The connecting straight shaft 4 is connected to the limiting circular plate 5 by a bearing connection. The limiting circular plate 5 and the central positioning shaft 6 are integrated into a single structure. The diameter of the limiting circular plate 5 is larger than the diameter of the central positioning shaft 6, so the train wheel bearing can be installed and positioned on the central positioning shaft 6 for support. At the same time, the rotation angle can be adjusted through the limiting circular plate 5 later.

[0024] The support stud 7 is fixed to the connecting block 3 by welding, and the support stud 7 is fixed to the adjusting ring 9 by sliding connection. The support stud 7 is fixed on the connecting block 3, and the adjusting ring 9 can slide and lift.

[0025] The adjusting ring 9 and the limiting slider 10 are integrated into one structure, and the limiting slider 10 is connected to the slide groove 8 by a sliding connection. The adjusting ring 9 drives the limiting slider 10 to slide inside the slide groove 8, which improves the stability of the adjusting ring 9 during lifting and lowering and avoids rotation.

[0026] The combined straight plate 11 has positioning through holes 12 evenly distributed, and the positioning through holes 12 are connected to the ultrasonic probes 13 by embedding and fixing. The combined straight plate 11 is connected to the adjusting ring sleeve 9 by welding and fixing. The positioning through holes 12 distributed on the combined straight plate 11 can install an appropriate number of ultrasonic probes 13, and the ultrasonic probes 13 are used to detect cracks in the wheel bearings of the train installed on the central positioning shaft 6.

[0027] The combined sleeve 14 and the lever 15 are integrated into one structure, and the levers 15 are symmetrically distributed on the combined sleeve 14. The combined sleeve 14 is connected to the support stud 7 by a threaded connection. The combined sleeve 14 can be easily moved by the lever 15. The combined sleeve 14 rises and falls on the support stud 7, and the height of the adjusting ring 9 can be adjusted.

[0028] Working principle: According to Figure 1-5 First, after placing the load-bearing base plate 1 in a suitable position, the train wheel bearing is positioned on the central positioning shaft 6. The train wheel bearing is then rotated and adjusted to a suitable position on the connecting straight shaft 4 via the central positioning shaft 6 and the limiting circular plate 5, so that the curved surface of the train wheel bearing detection area is below the ultrasonic probe 13. Next, the combined circular sleeve 14 is moved by the lever 15, and the combined circular sleeve 14 rotates and descends on the support stud 7. The combined circular sleeve 14 presses down on the adjusting ring sleeve 9, and the adjusting ring sleeve 9 slides down on the outside of the support stud 7. Simultaneously, the adjusting ring 9 drives the limiting slider 10 to slide down within the slide groove 8, maintaining stability. The adjusting ring 9 drives the ultrasonic probe 13 to descend via the combined straight plate 11. The bottom end of the ultrasonic probe 13 fits against the curved surface of the train wheel bearing detection area. Subsequently, the ultrasonic probe 13 performs internal detection on the train wheel bearing using the pulse reflection method. The ultrasonic probe 13 is a known and existing technology on the market and will not be described in detail here. The above is the working process of the entire device. All contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for detecting cracks in train wheel bearings, comprising a load-bearing base plate (1) and an ultrasonic probe (13), characterized in that: A supporting square column (2) is fixedly installed on the top surface of the load-bearing base plate (1), and a connecting block (3) is provided at the top of the supporting square column (2). A connecting straight shaft (4) is installed on the front surface of the connecting block (3), and a limiting circular plate (5) is installed at the front end of the connecting straight shaft (4). A central positioning shaft (6) is provided at the center of the front surface of the limiting circular plate (5). A supporting stud (7) is installed at the center of the top of the connecting block (3), and a sliding groove (8) is opened on the front side of the curved surface of the supporting stud (7). An adjusting ring sleeve (9) is sleeved on the outer side of the supporting stud (7), and a limiting slider (10) is installed on the inner wall of the adjusting ring sleeve (9). The limiting slider (10) and the slide groove (8) are connected to each other. A combined straight plate (11) is installed on the curved front side of the adjusting ring sleeve (9). A positioning through hole (12) is opened at the front end of the combined straight plate (11). An ultrasonic probe (13) is installed through the positioning through hole (12). A combined round sleeve (14) is installed above the adjusting ring sleeve (9). The combined round sleeve (14) is sleeved and installed on the outside of the support stud (7). A lever (15) is installed on the outer curved surface of the combined round sleeve (14). A support spring (16) is installed below the adjusting ring sleeve (9). The support spring (16) is installed around the outside of the support stud (7).

2. The device for detecting cracks in train wheel bearings according to claim 1, characterized in that: The connecting block (3), the supporting column (2), and the connecting straight shaft (4) are integrated into a single structure. The connecting straight shaft (4) and the limiting circular plate (5) are connected by a bearing. The limiting circular plate (5) and the central positioning shaft (6) are integrated into a single structure. The diameter of the limiting circular plate (5) is larger than the diameter of the central positioning shaft (6).

3. The device for detecting cracks in train wheel bearings according to claim 1, characterized in that: The support stud (7) is connected to the connecting block (3) by welding, and the support stud (7) is connected to the adjusting ring (9) by sliding connection.

4. The device for detecting cracks in train wheel bearings according to claim 1, characterized in that: The adjusting ring (9) and the limiting slider (10) are integrated into one structure, and the limiting slider (10) and the slide groove (8) are connected by a sliding connection.

5. The device for detecting cracks in train wheel bearings according to claim 1, characterized in that: The combined straight plate (11) has positioning through holes (12) evenly spaced, and the positioning through holes (12) are connected to the ultrasonic probe (13) by embedding and fixing, and the combined straight plate (11) is connected to the adjusting ring (9) by welding and fixing.

6. The device for detecting cracks in train wheel bearings according to claim 1, characterized in that: The combined sleeve (14) and the lever (15) are integrated into one structure, and the levers (15) are symmetrically distributed on the combined sleeve (14). The combined sleeve (14) and the support stud (7) are connected by a threaded connection.

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