Three-dimensional scanning auxiliary mounting rack for rail transit wheel axle fatigue life verification

Abstract

The utility model belongs to the technical field of rail transit vehicle testing, and particularly relates to a three-dimensional scanning auxiliary mounting rack for rail transit wheel axle fatigue life verification, which comprises a base, a swivel bearing mounted in the base, a turntable mounted on the swivel bearing, and a vertical column fixedly mounted on the turntable. The upper end of the stand column penetrates through the upper surface of the base, a sliding table is arranged on the stand column in a sliding mode, a transverse extension rod is arranged in the sliding table in a sliding mode, and installation grooves used for installing a three-dimensional scanner are formed in the upper face, the lower face, the front face and the rear face of the transverse extension rod. According to the utility model, the height-adjustable sliding table and the stretching length-adjustable transverse extension rod are arranged, and the transverse extension rod is provided with the mounting groove for mounting the three-dimensional scanner, so that the three-dimensional scanner can be close to the wheel axle to acquire image data when the base is out of the range of the test platform.

Description

Technical Field

[0001] The utility model belongs to the technical field of rail transit vehicle testing, and particularly relates to an auxiliary mounting bracket for three-dimensional scanning of fatigue life verification of rail transit wheel axles. Background Art

[0002] With the development of high-speed rail technology, EMU trains have become the preferred means of transportation for people to travel. As one of the most important core components of EMU trains, the working stability and reliability of the wheel set directly affect the running safety of the vehicle. Therefore, before being put into use, it is necessary to verify the fatigue life of the wheel axle, and conduct comprehensive experimental verification on the design and development, material properties, and processing technology of the wheel axle.

[0003] To verify the fatigue life of a half-wheel set composed of a wheel and an axle, it is necessary to fix it on a test bench. Then, an eccentric motor is installed at the upper end of the journal at the other end where the half-wheel set stands upright. The test is completed by relying on the eccentricity of the motor to be as close as possible to the resonance frequency of the test sample. To collect image data of the wheel axle during fatigue testing, it is necessary to perform three-dimensional scanning on the test part of the wheel axle during the test through a three-dimensional scanner. However, since the half-wheel set and the test bench will vibrate almost synchronously, which will also affect the vibration of the test platform. Therefore, if the bracket of the three-dimensional scanner is installed on the test platform, it is easy to cause inaccurate collected images and data. However, if the bracket of the three-dimensional scanner is placed outside the test platform range, it will cause the three-dimensional scanner to be too far away from the test sample, and the image data of the test sample cannot be collected. Summary of the Utility Model

[0004] The utility model provides an auxiliary mounting bracket for three-dimensional scanning of fatigue life verification of rail transit wheel axles for the above problems.

[0005] To achieve the above object, the utility model adopts the following technical solutions:

[0006] An auxiliary mounting bracket for three-dimensional scanning of fatigue life verification of rail transit wheel axles, including a base. A counterweight is arranged inside the base. A rotary bearing is also installed inside the base. A turntable is installed on the rotary bearing. A column is fixedly installed on the turntable. The upper end of the column passes through the upper surface of the base. A sliding table is slidably arranged on the column. A first driving mechanism for driving the sliding table to move is also installed on the column. A transverse extension rod is slidably arranged inside the sliding table. A second driving mechanism for driving the transverse extension rod to move is also installed on the sliding table. Mounting grooves for installing a three-dimensional scanner are formed on the upper, lower, front, and rear four surfaces of the transverse extension rod.

[0007] Further, the first driving mechanism includes fixing blocks fixedly arranged at the upper and lower parts of the column. A lead screw is rotatably arranged between the two fixing blocks. A slider is threadedly connected to the lead screw. The slider is fixedly connected to the sliding table. The lower end of the lead screw passes through the fixing block and is key-connected with a driven bevel gear. The driven bevel gear is meshed and connected with a driving bevel gear. The driving bevel gear is installed at one end of the first rotating shaft. The first rotating shaft is rotatably installed on the connecting plate. The connecting plate is fixedly connected to the fixing block. The other end of the first rotating shaft passes through the connecting plate and is fixedly installed with a first rotating wheel.

[0008] Furthermore, a dovetail chute is formed in the sliding table. A dovetail slide rail corresponding to the dovetail chute is fixedly arranged on the transverse extension rod.

[0009] Moreover, the second driving mechanism includes a rack fixedly arranged on the transverse extension rod. The rack is meshed and connected with a driving gear. The driving gear is installed at one end of the second rotating shaft. The second rotating shaft is rotatably installed on the sliding table. The other end of the second rotating shaft passes through the sliding table and is fixedly installed with a second rotating wheel.

[0010] Moreover, limiting blocks are arranged at both ends of the dovetail slide rail.

[0011] Moreover, a limiting buffer column is arranged at the lower end of the side wall of the column. The limiting buffer column is made of rubber.

[0012] Moreover, a locking stud is threadedly connected to the side wall of the base. The inner end of the locking stud is used to abut against the circumferential surface of the turntable to lock the turntable. The outer end of the locking stud passes through the base and is installed with a third rotating wheel.

[0013] Moreover, universal wheels are installed at the four corners of the lower surface of the base.

[0014] Moreover, support plates are fixedly arranged at the four corners of the base. A support stud is threadedly connected to the support plate. The lower end of the support stud is fixedly connected with a support block.

[0015] Compared with the prior art, the present utility model has the following advantages:

[0016] By setting a sliding table with adjustable height and a transverse extension rod with adjustable extension length, and arranging an installation groove for installing a 3D scanner on the transverse extension rod, the present utility model realizes the function that the 3D scanner can be close to the wheel axle to collect image data outside the range of the test platform, which not only prevents the influence of the vibration of the test bench on the 3D scanner, but also ensures that the 3D scanner can be close to the wheel axle to collect image data.

[0017] The utility model is provided with mounting grooves on the upper, lower, front and rear four surfaces of the transverse extension rod, and a 3D scanner can be mounted in different directions according to needs.

[0018] In order to prevent self-locking of the lifting of the sliding table, the utility model adopts a lead screw structure, and in order to improve the moving speed of the transverse extension rod, a gear-rack structure is adopted, which has the characteristics of strong applicability. Description of the Drawings

[0019] Figure 1 is a schematic structural diagram of the utility model;

[0020] Figure 2 is a schematic structural diagram of the base of the utility model without an upper cover;

[0021] Figure 3 is the utility model Figure 2 a partial enlarged view of the circle C in;

[0022] Figure 4 is the utility model Figure 2 a partial enlarged view of the circle B in;

[0023] Figure 5 is the utility model Figure 1 a partial enlarged view of the circle A in;

[0024] Figure 6 is the utility model Figure 2 a partial enlarged view of the circle D in;

[0025] Figure 7 is a schematic structural diagram of the base of the utility model without an upper cover;

[0026] Figure 8 is the utility model Figure 7 a partial enlarged view of the circle E in;

[0027] In the figure, base 1, counterweight 2, rotary bearing 3, turntable 4, column 5, sliding table 6, transverse extension rod 7, mounting groove 8, fixed block 9, lead screw 10, slider 11, passive bevel gear 12, active bevel gear 13, first rotating shaft 14, connecting plate 15, first runner 16, dovetail chute 17, dovetail slide rail 18, rack 19, driving gear 20, second rotating shaft 21, second runner 22, limiting block 23, limiting buffer column 24, locking stud 25, third runner 26, universal wheel 27, support plate 28, support stud 29, support block 30. Detailed Embodiment

[0028] In order to further elaborate on the technical solution of the utility model, the following is a further description of the utility model through embodiments.

[0029] Such as Figures 1 to 8As shown in the figure, an auxiliary mounting rack for three-dimensional scanning of the fatigue life verification of a rail transit wheel axle includes a base 1. Universal wheels 27 are installed at the four corners of the lower surface of the base 1. Support plates 28 are fixed at the four corners of the base 1. Support studs 29 are threadedly connected to the support plates 28. A support block 30 is fixedly connected to the lower end of the support stud 29. A counterweight 2 is arranged inside the base 1. A rotary bearing 3 is also installed inside the base 1. A turntable 4 is installed on the rotary bearing 3. A locking stud 25 is threadedly connected to the side wall of the base 1. The inner end of the locking stud 25 is used to abut against the circumferential surface of the turntable 4 to lock the turntable 4. A third runner 26 is installed through the base 1 at the outer end of the locking stud 25. A column 5 is fixedly installed on the turntable 4. A limit buffer column 24 is arranged at the lower end of the side wall of the column 5. The material of the limit buffer column 24 is rubber. The upper end of the column 5 passes through the upper surface of the base 1. A sliding table 6 is slidably arranged on the column 5. A first driving mechanism for driving the sliding table 6 to move is also installed on the column 5. A dovetail chute 17 is formed inside the sliding table 6. A dovetail slide rail 18 corresponding to the dovetail chute 17 is fixedly arranged on the transverse extension rod 7. Limit blocks 23 are arranged at both ends of the dovetail slide rail 18. A second driving mechanism for driving the transverse extension rod 7 to move is also installed on the sliding table 6. Mounting grooves 8 for installing a three-dimensional scanner are formed on the upper, lower, front and rear four surfaces of the transverse extension rod 7.

[0030] The first driving mechanism includes fixing blocks 9 fixedly arranged at the upper and lower parts of the column 5. A lead screw 10 is rotatably arranged between the two fixing blocks 9. A slider 11 is threadedly connected to the lead screw 10. The slider 11 is fixedly connected to the sliding table 6. The lower end of the lead screw 10 passes through the fixing block 9 and is key-connected with a driven bevel gear 12. The driven bevel gear 12 is meshed and connected with a driving bevel gear 13. The driving bevel gear 13 is installed at one end of a first rotating shaft 14. The first rotating shaft 14 is rotatably installed on a connecting plate 15. The connecting plate 15 is fixedly connected to the fixing block 9. The other end of the first rotating shaft 14 passes through the connecting plate 15 and is fixedly installed with a first runner 16.

[0031] The second driving mechanism includes a rack 19 fixed on the transverse extension rod 7. The rack 19 is meshed and connected with a driving gear 20. The driving gear 20 is installed at one end of a second rotating shaft 21. The second rotating shaft 21 is rotatably installed on the sliding table 6. The other end of the second rotating shaft 21 passes through the sliding table 6 and is fixedly installed with a second runner 22.

[0032] The main features and advantages of the present utility model have been shown and described above. For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present utility model, the present utility model can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes that fall within the meaning and scope of the equivalent elements of the claims within the present utility model.

[0033] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An auxiliary mounting bracket for three-dimensional scanning of the fatigue life verification of rail transit axles, characterized in that: It includes a base (1), a counterweight (2) is arranged inside the base (1), a rotary bearing (3) is also installed inside the base (1), a turntable (4) is installed on the rotary bearing (3), a column (5) is fixedly installed on the turntable (4), the upper end of the column (5) passes through the upper surface of the base (1), a sliding table (6) is slidably arranged on the column (5), a first driving mechanism for driving the sliding table (6) to move is also installed on the column (5), a transverse extension rod (7) is slidably arranged inside the sliding table (6), a second driving mechanism for driving the transverse extension rod (7) to move is also installed on the sliding table (6), and mounting grooves (8) for installing a 3D scanner are opened on the upper, lower, front and rear four surfaces of the transverse extension rod (7).

2. The auxiliary mounting bracket for three-dimensional scanning of rail transit wheel-axle fatigue life verification according to claim 1, characterized in that: The first driving mechanism includes fixing blocks (9) fixedly arranged at the upper and lower parts of the column (5), a lead screw (10) is rotatably arranged between the two fixing blocks (9), a slider (11) is threadedly connected to the lead screw (10), the slider (11) is fixedly connected to the sliding table (6), the lower end of the lead screw (10) passes through the fixing block (9) and is key-connected with a driven bevel gear (12), the driven bevel gear (12) is meshed and connected with a driving bevel gear (13), the driving bevel gear (13) is installed at one end of a first rotating shaft (14), the first rotating shaft (14) is rotatably installed on a connecting plate (15), the connecting plate (15) is fixedly connected to the fixing block (9), and the other end of the first rotating shaft (14) passes through the connecting plate (15) and is fixedly installed with a first runner (16).

3. The auxiliary mounting bracket for three-dimensional scanning of rail transit wheel-axle fatigue life verification according to claim 1, wherein: A dovetail chute (17) is opened inside the sliding table (6), and a dovetail slide rail (18) corresponding to the dovetail chute (17) is fixedly arranged on the transverse extension rod (7).

4. The auxiliary mounting frame for three-dimensional scanning of the fatigue life verification of rail transit axles according to claim 1, characterized in that: The second driving mechanism includes a rack (19) fixed on the transverse extension rod (7), the rack (19) is meshed and connected with a driving gear (20), the driving gear (20) is installed at one end of a second rotating shaft (21), the second rotating shaft (21) is rotatably installed on the sliding table (6), and the other end of the second rotating shaft (21) passes through the sliding table (6) and is fixedly installed with a second runner (22).

5. The auxiliary mounting bracket for three-dimensional scanning of rail transit wheel axle fatigue life verification according to claim 3, characterized in that: Limit blocks (23) are arranged at both ends of the dovetail slide rail (18).

6. The auxiliary mounting bracket for three-dimensional scanning of rail transit wheel-axle fatigue life verification according to claim 1, wherein: A limit buffer column (24) is arranged at the lower end of the side wall of the column (5), and the material of the limit buffer column (24) is rubber.

7. The auxiliary mounting frame for three-dimensional scanning of rail transit wheel-axle fatigue life verification according to claim 1, characterized in that: A locking stud (25) is threadedly connected to the side wall of the base (1), the inner end of the locking stud (25) is used to abut against the circumferential surface of the turntable (4) to lock the turntable (4), and a third runner (26) is installed at the outer end of the locking stud (25) passing through the base (1).

8. The auxiliary mounting bracket for three-dimensional scanning of rail transit wheel axle fatigue life verification according to claim 1, characterized in that: Universal wheels (27) are installed at the four corners of the lower surface of the base (1).

9. The auxiliary mounting bracket for three-dimensional scanning of rail transit wheel axle fatigue life verification according to claim 8, characterized in that: Support plates (28) are fixed at the four corners of the base (1), support studs (29) are threadedly connected to the support plates (28), and support blocks (30) are fixedly connected to the lower ends of the support studs (29).

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