Rail transit locomotive wheel set flaw detection test bed

Abstract

The invention relates to the technical field of wheel set flaw detection, in particular to a rail transit locomotive vehicle wheel set flaw detection test bed which comprises a buried frame fixedly connected with a frame and further comprises a wheel set limiting lifting structure connected with the buried frame. The rail-imitating driving structure is connected with the buried frame; the bearing limiting and carrying structure is connected with the buried frame and comprises a variable-pitch lifting part, and the variable-pitch lifting part is connected with two sets of bearing clamping and limiting parts; and the ultrasonic flaw detection structure is connected with the rail simulation driving structure. According to the device, bearings on the wheel sets are limited, the wheel sets are driven to rotate, ultrasonic flaw detection operation is carried out on the rotating wheel sets, when independent power assemblies are installed on the wheel sets, the wheel sets are limited, the rotating angles of the wheel sets are measured, and therefore the device is suitable for flaw detection operation on different wheel sets; and the applicability of the method is improved.

Description

Technical Field

[0001] The invention relates to the technical field of wheelset flaw detection, in particular to a wheelset flaw detection test bench for rail transit locomotives and vehicles. Background Art

[0002] With the expansion of urban rail transit industry over the years, subway, as an important part of urban transportation network, has become an indispensable part of urban residents' travel. Urban rail wheel drive is a key component of subway vehicles. Its reliability is directly related to the safety and comfort of subway vehicles. The wheelset of urban rail vehicles needs to be inspected after running for a certain period of time. In order to ensure the good technical status of the wheelset and provide data support, it is necessary to perform flaw detection on the wheelset to determine whether there are defects such as fatigue cracks in the wheelset. The flaw detection area of ​​the wheelset includes the axle and the wheel.

[0003] When the wheelset flaw detection test bench is in use, the bearings on the wheelset need to be placed on a support table. The bearing positions and bearing sizes of different types of wheelsets are different. Some wheelsets are equipped with independent power components, so some wheelsets do not need equipment to drive the wheelset to rotate. Some wheelsets do not have independent power components installed, so the test bench needs to be equipped with a drive component to drive the wheelset to rotate. However, existing equipment can often only meet one situation and its applicability is limited. Summary of the invention

[0004] The object of the present invention is to provide a rail transit locomotive vehicle wheelset flaw detection test bench to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: A rail transit locomotive wheel set flaw detection test bench comprises an underground frame, the underground frame is fixedly connected to a frame, the frame is fixedly connected to a control console, and further comprises: A wheelset position limiting and lifting structure connected to the buried frame, the wheelset position limiting and lifting structure is used to provide position limiting for the wheelset to be tested and to provide a driving force for adjusting the position of the wheelset to be tested; A track-mimicking driving structure connected to the buried frame, wherein the track-mimicking driving structure applies friction to the wheelset so that the wheelset obtains torque. When the wheelset actively rotates, the track-mimicking driving structure provides limited support for the wheelset and performs angle measurement. A bearing limit support structure connected to the buried frame, the bearing limit support structure includes a variable pitch lifting part connected to the buried frame, the variable pitch lifting part is connected to two groups of symmetrically arranged bearing clamping limit parts, the bearing clamping limit part includes a linkage seat connected to the variable pitch lifting part, the linkage seat is fixedly connected to a drive motor, the drive motor is fixedly connected to a swing arm, the swing arm and the linkage seat are respectively fixedly connected to a group of semicircular rotation limit components, and the two groups of semicircular rotation limit components are movably connected to each other; An ultrasonic flaw detection structure connected to the track-mimicking driving structure.

[0006] As a further improvement scheme of the present invention: the wheelset limiting lifting structure includes a pad floor fixedly connected to the buried frame, the pad floor fixedly connected to two groups of first active telescopic frames, the buried frame fixedly connected to two groups of second active telescopic frames, the moving ends of the two groups of second active telescopic frames are commonly fixedly connected to a track frame, the track frame is fixedly connected to the moving ends of the two groups of the first active telescopic frames, the track frame is fixedly connected to a first motor, the output end of the first motor is fixedly connected to a first screw rod, the first screw rod is threadedly connected to a suspension, the suspension is rotatably connected to a plurality of casters arranged in a groove of the track frame, the suspension is fixedly connected to two groups of third active telescopic frames, the moving end of the third active telescopic frame is fixed with a double-groove plate, the double-groove plate is provided with two groups of symmetrically arranged transverse grooves, each group of transverse grooves is slidably connected to a cam frame, the cam frame is fixedly connected to a conical roller, the cam frame is rotatably connected to the suspension, the suspension is provided with an I-shaped groove, and a gearbox docking assembly is movably installed on the I-shaped groove.

[0007] As a further improvement of the present invention: the gearbox docking assembly includes a hole rack slidably connected to the I-slot, the hole rack is provided with multiple groups of connecting holes, the hole rack is threadedly connected to a screw rod, and the screw rod is fixedly connected to a crank.

[0008] As a further improvement scheme of the present invention: the track-imitating driving structure includes two groups of fixed frames fixedly installed on the buried frame, the two groups of fixed frames are symmetrically arranged on the buried frame, the fixed frame is fixedly connected with a clutch, the clutch is coaxially fixedly connected with a servo motor, the servo motor is fixedly connected to the fixed frame, the end of the clutch away from the servo motor is connected with a reducer, the reducer is fixedly installed on the top surface of the fixed frame, the output end of the reducer is coaxially connected with a photoelectric encoder, the output end of the reducer is coaxially fixedly connected with a conical load wheel, the fixed frame is fixedly connected with a fourth active telescopic frame, the moving end of the fourth active telescopic frame is fixedly connected with a power-assisting plate, and the power-assisting plate is movably connected to the conical load wheel.

[0009] As a further improvement scheme of the present invention: the variable pitch lifting part includes two groups of active telescopic rods fixedly connected to the buried frame, the moving ends of the two groups of active telescopic rods are commonly fixedly connected to a cross frame, a double-output shaft motor is fixedly installed in the middle of the cross frame, the output end of the double-output shaft motor is fixedly connected to a second screw rod, the second screw rod is threadedly connected to a slider slidably connected to the cross frame, and the slider is fixedly connected to the linkage seat.

[0010] As a further improvement scheme of the present invention: the semicircular rotation limit assembly includes a connecting frame, the connecting frame of the semicircular rotation limit assembly installed on the swing arm is fixedly connected to the swing arm, the connecting frame of the semicircular rotation limit assembly installed on the linkage seat is fixedly connected to the linkage seat, the connecting frame is fixedly connected to the rotation limit frame, the rotation limit frame is rotatably connected to a semi-ring frame, the semi-ring frame is fixedly connected to a semicircular gear ring, the connecting frame is fixedly connected to a second motor, the output end of the second motor is fixedly connected to a gear meshing with the semicircular gear ring, the semicircular gear ring is fixedly connected to three groups of sleeves, each group of connecting frames is fixedly connected to three groups of rectangular sleeves, the rectangular sleeves are slidably connected to an extension bar, the extension bar is fixedly connected to a support rod slidably connected to the sleeve, the extension bar is fixedly connected to a pressure sensor, the pressure sensor is fixedly connected to a sleeve frame, the sleeve frame is connected to a shell through multiple groups of bolts, and the shell is fixedly connected to an arc-shaped concave frame.

[0011] As a further improvement scheme of the present invention: the ultrasonic flaw detection structure includes a fifth active telescopic frame fixedly connected to the fixed frame, the mobile end of the fifth active telescopic frame is fixedly connected to the sixth active telescopic frame, the mobile end of the sixth active telescopic frame is fixedly connected to the first ultrasonic probe, the frame is fixedly connected to the track frame, the track frame is fixedly connected to the third motor, the output end of the third motor is fixedly connected to a reverse threaded rod, the reverse threaded rod is threadedly connected to two groups of symmetrically arranged transverse sleeves, the transverse sleeves are slidably connected to the track frame, the transverse sleeves are fixedly connected to the seventh active telescopic frame, and the mobile end of the seventh active telescopic frame is fixedly connected to the second ultrasonic probe.

[0012] Compared with the prior art, the present invention has the following beneficial effects: During use, the wheelset to be inspected is placed on the wheelset limiting and lifting structure. If no independent power component is installed on the wheelset, the wheelset limiting and lifting structure moves the wheelset so that the wheelset moves toward the bearing clamping limiting part, and the driving motor drives the swing arm to rotate. Under the drive of the swing arm to the semicircular rotation limiting component, the two groups of semicircular rotation limiting components of the same bearing clamping limiting part move away from each other, and then the outer ring of the bearing on the wheelset is inserted into the semicircular rotation limiting component on the linkage seat, and then the driving motor drives the swing arm to rotate toward the linkage seat, so that the two groups of semicircular rotation limiting components are connected, so that the semicircular rotation limiting component limits the movement of the outer ring of the bearing, and the wheelset abuts the ultrasonic flaw detection structure, and then the variable pitch lifting part drives the bearing clamp The holding limit part moves, so that the bearing clamping limit part drives the bearing to move, so that the bearing drives the wheelset to move toward the track-imitation drive structure, the track-imitation drive structure drives the wheelset to rotate, and the ultrasonic flaw detection structure performs flaw detection on the wheelset. If an independent power component is installed on the wheelset, the wheelset limit lifting structure is connected to the shell of the independent power component, and then the wheelset limit lifting structure moves the wheelset, so that the bearing on the wheelset is docked with the bearing clamping limit part, the wheel of the wheelset abuts the track-imitation drive structure, the wheelset abuts the ultrasonic flaw detection structure, the ultrasonic flaw detection structure performs flaw detection on the wheelset, and as the independent power component drives the wheelset, the wheelset rotates, during which the track-imitation drive structure performs a rotational speed measurement operation. The present invention cooperates with each other among the wheelset limiting lifting structure, the track-mimicking driving structure, and the bearing limiting supporting structure, so that the present invention limits the bearings on the wheelset, drives the wheelset to rotate, and performs ultrasonic flaw detection on the rotating wheelset. When an independent power component is installed on the wheelset, the present invention provides limiting for the wheelset and measures the angle through which the wheelset has rotated, so that the present invention is suitable for flaw detection operations on different wheelsets, thereby improving the applicability of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a partial three-dimensional structural schematic diagram of the wheelset limiting and lifting structure of the present invention; Figure 3 A schematic diagram of a partial three-dimensional structure of the wheelset limiting and lifting structure of the present invention from another perspective; Figure 4 It is a schematic diagram of a three-dimensional structure in which the buried frame, the rail-imitation driving structure, and the bearing limit supporting structure cooperate with each other in the present invention; Figure 5 It is a schematic diagram of a three-dimensional structure in which a fifth active telescopic frame, a sixth active telescopic frame, a first ultrasonic probe, and a partial track-mimicking driving structure cooperate with each other in the present invention; Figure 6 It is a schematic diagram of a three-dimensional structure in which the double-output shaft motor, the second screw rod, the slider, and the bearing clamping and limiting part cooperate with each other in the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the bearing clamping and limiting part of the present invention; Figure 8 For the present invention Figure 7 A local enlarged schematic diagram of the middle A; Fig. 9 It is a three-dimensional structural schematic diagram of the bearing clamping and limiting part of the present invention from another viewing angle; Fig.10 It is a schematic diagram of the internal three-dimensional structure of the sleeve frame, the shell body and the arc-shaped inner concave frame cooperating with each other in the present invention; Fig.11 It is a schematic diagram of the three-dimensional structure of the screw rod and the crank handle cooperating with each other in the present invention; Fig.12 It is a schematic diagram of the three-dimensional structure of the track frame, the third motor, the reverse threaded rod, the transverse sleeve, the seventh active telescopic frame, and the second ultrasonic probe cooperating with each other in the present invention.

[0014] In the figure: 1. buried frame; 2. frame; 3. wheelset limit lifting structure; 4. track-like driving structure; 5. bearing limit supporting structure; 6. variable pitch lifting part; 7. bearing clamping limit part; 8. linkage seat; 9. driving motor; 10. swing arm; 11. semicircular rotation limit assembly; 12. ultrasonic flaw detection structure; 13. floor pad; 14. first active telescopic frame; 15. second active telescopic frame; 16. track frame; 17. first motor; 18. first screw rod; 19. suspension; 20. third active telescopic frame; 21. double groove plate; 22. transverse groove; 23. convex shaft frame; 24. cone roller; 25. I-shaped groove; 26. gearbox docking assembly; 27. hole frame; 29. ​​screw rod; 30. crank; 31. fixed frame; 32. clutch; 33. conical surface load wheel; 34. deceleration device; 35, photoelectric encoder; 36, servo motor; 37, fourth active telescopic frame; 38, power support plate; 39, active telescopic rod; 40, cross frame; 41, double-axis motor; 42, second screw rod; 43, slider; 44, connecting frame; 45, rotation limit frame; 46, semi-ring frame; 47, semi-circular gear ring; 48, second motor; 49, gear; 50, sleeve; 51, rectangular sleeve; 52, extension strip; 53, support rod; 54, pressure sensor; 55, sleeve frame; 56, shell; 57, arc-shaped concave frame; 58, fifth active telescopic frame; 59, sixth active telescopic frame; 60, first ultrasonic probe; 61, track frame; 62, third motor; 63, reverse threaded rod; 64, transverse sleeve; 65, seventh active telescopic frame; 66, second ultrasonic probe. DETAILED DESCRIPTION

[0015] The technical solution of the present invention is further described in detail below in conjunction with specific implementation methods.

[0016] Example 1, see Figures 1 to 12As shown, a rail transit locomotive vehicle wheelset flaw detection test bench includes an underground frame 1, the underground frame 1 is fixedly connected to a frame 2, the frame 2 is fixedly connected to a console, and further includes: A wheelset position limiting and lifting structure 3 connected to the buried frame 1, the wheelset position limiting and lifting structure 3 is used to provide position limiting for the wheelset to be tested and to provide a driving force for adjusting the position of the wheelset to be tested; A track-mimicking driving structure 4 connected to the buried frame 1, wherein the track-mimicking driving structure 4 applies friction to the wheelset so that the wheelset obtains torque. When the wheelset actively rotates, the track-mimicking driving structure 4 provides position limiting support for the wheelset and performs angle measurement. A bearing limit support structure 5 connected to the buried frame 1, the bearing limit support structure 5 includes a variable pitch lifting part 6 connected to the buried frame 1, the variable pitch lifting part 6 is connected to two groups of symmetrically arranged bearing clamping limit parts 7, the bearing clamping limit part 7 includes a linkage seat 8 connected to the variable pitch lifting part 6, the linkage seat 8 is fixedly connected to a drive motor 9, the drive motor 9 is fixedly connected to a swing arm 10, the swing arm 10 and the linkage seat 8 are respectively fixedly connected to a group of semicircular rotation limit components 11, and the two groups of semicircular rotation limit components 11 are movably connected to each other; The ultrasonic flaw detection structure 12 connected to the track-mimicking driving structure 4 is fixedly connected to the frame 2 .

[0017] During use, the wheelset to be tested is placed on the wheelset limiting and lifting structure 3. If no independent power component is installed on the wheelset, the wheelset limiting and lifting structure 3 moves the wheelset so that the wheelset moves toward the bearing clamping limiting part 7. The driving motor 9 drives the swing arm 10 to rotate. Under the drive of the swing arm 10 to the semicircular rotation limiting component 11, the two groups of semicircular rotation limiting components 11 of the same bearing clamping limiting part 7 are moved away from each other, and then the outer ring of the bearing on the wheelset is inserted into the semicircular rotation limiting component 11 on the linkage seat 8, and then the driving motor 9 drives the swing arm 10 to rotate toward the linkage seat 8, so that the two groups of semicircular rotation limiting components 11 are connected, so that the semicircular rotation limiting component 11 limits the movement of the outer ring of the bearing, and the wheelset abuts against the ultrasonic flaw detection structure 12, and then the variable pitch lifting part 6 drives the bearing clamping limit part 7 to move, so that the bearing clamping limit part 7 drives the bearing to move, so that the bearing drives the wheelset to move toward the track-imitation driving structure 4, the track-imitation driving structure 4 drives the wheelset to rotate, and the ultrasonic flaw detection structure 12 performs flaw detection on the wheelset. If an independent power component is installed on the wheelset, the wheelset limiting lifting structure 3 is connected to the shell of the independent power component, and then the wheelset limiting lifting structure 3 moves the wheelset, so that the bearing on the wheelset is docked with the bearing clamping limit part 7, the wheel of the wheelset abuts the track-imitation driving structure 4, the wheelset abuts the ultrasonic flaw detection structure 12, the ultrasonic flaw detection structure 12 performs flaw detection on the wheelset, and as the independent power component drives the wheelset, the wheelset rotates, during which the track-imitation driving structure 4 performs a speed measurement operation. The present invention cooperates with each other among the wheelset limiting lifting structure 3, the track-mimicking driving structure 4, and the bearing limiting supporting structure 5, so that the present invention limits the bearings on the wheelset, drives the wheelset to rotate, and performs ultrasonic flaw detection on the rotating wheelset. When an independent power component is installed on the wheelset, the present invention provides limiting for the wheelset and measures the angle through which the wheelset has rotated, making the present invention suitable for flaw detection operations on different wheelsets, thereby improving the applicability of the present invention.

[0018] In one case of the present embodiment, the wheel pair limiting lifting structure 3 includes a pad floor 13 fixedly connected to the buried frame 1, the pad floor 13 is fixedly connected to two groups of first active telescopic frames 14, the buried frame 1 is fixedly connected to two groups of second active telescopic frames 15, the moving ends of the two groups of second active telescopic frames 15 are commonly fixedly connected to a track frame 16, the track frame 16 is fixedly connected to the moving ends of the two groups of the first active telescopic frames 14, the track frame 16 is fixedly connected to a first motor 17, the output end of the first motor 17 is fixedly connected to a first screw rod 18, the first screw rod 18 is threadedly connected to a suspension 19, and the suspension 19 is rotatably connected to a screw rod 19 disposed in a groove of the track frame 16. Multiple sets of casters, the suspension 19 is fixedly connected with two sets of third active telescopic frames 20, the movable end of the third active telescopic frame 20 is fixed with a double-grooved plate 21, the double-grooved plate 21 is provided with two sets of symmetrically arranged transverse grooves 22, each set of transverse grooves 22 is slidably connected with a cam frame 23, the cam end of the cam frame 23 is slidably arranged in the transverse groove 22, the cam frame 23 is fixedly connected with a tapered roller 24, the cam frame 23 is rotatably connected with the suspension 19, the suspension 19 is provided with an I-shaped groove 25, and a gearbox docking assembly 26 is movably installed on the I-shaped groove 25, and the independent power assembly on the wheelset is generally composed of a gearbox installed on the axle of the wheelset and a motor connected to the gearbox power. Generally, the pad floor 13 is installed in the ground, and the top surface of the pad floor 13 is flush with the ground. The pad floor 13 is used to carry the wheelset. The first active telescopic frame 14 and the second active telescopic frame 15 adjust the height of the track frame 16 together to adjust the height of the casters and the suspension 19, and the third active telescopic frame 20 drives the double-groove plate 21 to move, so that the transverse groove 22 drives the cam frame 23 to rotate, and the rotating cam frame 23 drives the cone roller 24 to move, so that the cone roller 24 abuts against the wheel of the wheelset, and then the first active telescopic frame 14 and the second active telescopic frame 15 adjust the height of the track frame 16 together, and the first motor 17 drives the first screw rod 18 to rotate, the rotating first screw rod 18 drives the suspension 19 to move, and the suspension 19 drives the cam frame 23 to move to move the wheelset supported by the cone roller 24.

[0019] In one case of this embodiment, the gearbox docking assembly 26 includes a hole frame 27 slidably connected to the I-shaped groove 25, and a plurality of connection holes are provided on the hole frame 27. The hole frame 27 is threadedly connected to a screw rod 29, and the screw rod 29 is fixedly connected to a crank 30. The crank 30 is rotated so that the screw rod 29 abuts against the suspension 19 to limit the movement of the hole frame 27, and then the hole frame 27 is connected to the gearbox of the independent power assembly of the wheelset using a component connection with a thread, so that the gearbox docking assembly 26 is connected to the gearbox of the independent power assembly of the wheelset, so that the suspension 19 can move the independent power assembly connected to the wheelset by moving the gearbox docking assembly 26, thereby moving the wheelset.

[0020] In one case of the present embodiment, the track-mimicking driving structure 4 includes two groups of fixed frames 31 fixedly mounted on the buried frame 1, and the two groups of fixed frames 31 are symmetrically arranged on the buried frame 1. The fixed frame 31 is fixedly connected with a clutch 32, and the clutch 32 is coaxially fixedly connected with a servo motor 36, and the servo motor 36 is fixedly connected to the fixed frame 31. The end of the clutch 32 away from the servo motor 36 is connected with a reducer 34, and the reducer 34 is fixedly mounted on the top surface of the fixed frame 31. The output end of the reducer 34 is coaxially connected with a photoelectric encoder 35, and the output end of the reducer 34 is coaxially fixedly connected with a conical wheel 33. The fixed frame 31 is fixedly connected with a fourth active telescopic frame 37, and the moving end of the fourth active telescopic frame 37 is fixedly connected with a power-assisting support plate 38, and the power-assisting support plate 38 is movably connected to the conical wheel 33. The servo motor 36 drives the input end of the reducer 34 to rotate through the clutch 32, so that the reducer 34 drives the conical carrier wheel 33 to rotate, and the rotating conical carrier wheel 33 rubs the wheel of the wheel pair to make the wheel rotate. When the wheel rotates actively, the clutch 32 disconnects the power connection between the servo motor 36 and the reducer 34, and the photoelectric encoder 35 measures the angle of rotation of the output end of the reducer 34 in real time.

[0021] In one case of the present embodiment, the variable pitch lifting part 6 includes two groups of active telescopic rods 39 fixedly connected to the buried frame 1, the moving ends of the two groups of active telescopic rods 39 are commonly fixedly connected to a cross frame 40, the cross frame 40 is slidably connected to multiple groups of guide frames slidably connected to the buried frame 1, a double-output shaft motor 41 is fixedly installed in the middle of the cross frame 40, the output end of the double-output shaft motor 41 is fixedly connected to a second screw rod 42, the second screw rod 42 is threadedly connected to a slider 43 slidably connected to the cross frame 40, and the slider 43 is fixedly connected to the linkage seat 8. The active telescopic rod 39 drives the cross frame 40 to move to adjust the height of the cross frame 40, the cross frame 40 drives the double-output shaft motor 41 to move longitudinally, and the double-output shaft motor 41 drives the second screw rod 42 to rotate, and the rotating second screw rod 42 drives the slider 43 to move on the cross frame 40 to adjust the spacing between the bearing clamping limit parts 7 and adjust the height of the bearing clamping limit parts 7 at the same time.

[0022] In one case of this embodiment, the semicircular rotation limiting assembly 11 includes a connecting frame 44, the connecting frame 44 of the semicircular rotation limiting assembly 11 installed on the swing arm 10 is fixedly connected to the swing arm 10, the connecting frame 44 of the semicircular rotation limiting assembly 11 installed on the linkage seat 8 is fixedly connected to the linkage seat 8, the connecting frame 44 is fixedly connected to a rotation limiting frame 45, the rotation limiting frame 45 is rotatably connected to a semi-ring frame 46, the semi-ring frame 46 is fixedly connected to a semicircular gear ring 47, the connecting frame 44 is fixedly connected to a second motor 48, the second motor 48 The output end is fixedly connected with a gear 49 meshing with a semicircular gear ring 47, the semicircular gear ring 47 is fixedly connected with three sets of sleeves 50, each set of connecting frames 44 is fixedly connected with three sets of rectangular sleeves 51, the rectangular sleeves 51 are slidably connected with extension bars 52, the extension bars 52 are fixedly connected with support rods 53 slidably connected with the sleeves 50, the extension bars 52 are fixedly connected with pressure sensors 54, the pressure sensors 54 are fixedly connected with sleeve frames 55, the sleeve frames 55 are connected with a shell 56 through multiple sets of bolts, and the shell 56 is fixedly connected with an arc-shaped inner recessed frame 57. After the two groups of rotation limit frames 45 in the same semicircular rotation limit assembly 11 abut against each other, the second motor 48 drives the gear 49 to rotate, the gear 49 drives the semicircular gear ring 47 to rotate, the semicircular gear ring 47 drives the sleeve 50 to rotate, the sleeve 50 drives the support rod 53 to move, the moving support rod 53 drives the extension bar 52 to move, the extension bar 52 drives the sleeve 55 to move through the pressure sensor 54, the sleeve 55 drives the shell 56 to move to adjust the position of the shell 56 and the arc-shaped inner recessed frame 57, the arc-shaped inner recessed frame 57 limits the movement and rotation of the bearing outer ring by clamping the bearing outer ring and applying friction to the outer wall of the bearing outer ring, the shell 56 is removed from the sleeve 55 by removing the bolts, so as to facilitate the replacement of the shell 56 and the arc-shaped inner recessed frame 57, so that the semicircular rotation limit assembly 11 can adapt to bearings of different sizes.

[0023] Embodiment 2, based on embodiment 1, refer to Figure 1 , Figure 5 , Fig.12The ultrasonic flaw detection structure 12 includes two groups of fifth active telescopic frames 58, which are respectively fixedly mounted on two groups of fixed frames 31. The mobile end of the fifth active telescopic frame 58 is fixedly connected to the sixth active telescopic frame 59, and the mobile end of the sixth active telescopic frame 59 is fixedly connected to the first ultrasonic probe 60. The frame 2 is fixedly connected to a track frame 61, and the track frame 61 is fixedly connected to a third motor 62. The output end of the third motor 62 is fixedly connected to a reverse threaded rod 63, and the reverse threaded rod 63 is provided with two symmetrical and reverse groups of threads. The reverse threaded rod 63 is threadedly connected to two symmetrically arranged groups of transverse sleeves 64, and the transverse sleeve 64 is slidably connected to the track frame 61. The transverse sleeve 64 is fixedly connected to the seventh active telescopic frame 65, and the mobile end of the seventh active telescopic frame 65 is fixedly connected to the second ultrasonic probe 66. The fifth active telescopic frame 58 is used to adjust the height of the sixth active telescopic frame 59. The sixth active telescopic frame 59 actively extends so that the first ultrasonic probe 60 abuts against the wheel of the wheelset to perform flaw detection on the wheels of the wheelset. The third motor 62 drives the reverse threaded rod 63 to rotate. The reverse threaded rod 63 is rotated to drive the two groups of transverse sleeves 64 to move, so as to adjust the distance between the two groups of seventh active telescopic frames 65, and then adjust the distance between the two groups of second ultrasonic probes 66. As the seventh active telescopic frame 65 is actively extended, the second ultrasonic probe 66 abuts against the outer surface of the axle of the wheelset, and then the second ultrasonic probe 66 performs ultrasonic flaw detection on the axle.

[0024] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention.

Claims

1. A rail transit locomotive wheel flaw detection test bench, comprising an underground frame, the underground frame is fixedly connected to a frame, the frame is fixedly connected to a control console, characterized in that: Also includes: A wheelset position limiting and lifting structure connected to the buried frame, the wheelset position limiting and lifting structure is used to provide position limiting for the wheelset to be tested and to provide a driving force for adjusting the position of the wheelset to be tested; A track-mimicking driving structure connected to the buried frame, wherein the track-mimicking driving structure applies friction to the wheelset so that the wheelset obtains torque. When the wheelset actively rotates, the track-mimicking driving structure provides limited support for the wheelset and performs angle measurement. A bearing limit support structure connected to the buried frame, the bearing limit support structure includes a variable pitch lifting part connected to the buried frame, the variable pitch lifting part is connected to two groups of symmetrically arranged bearing clamping limit parts, the bearing clamping limit part includes a linkage seat connected to the variable pitch lifting part, the linkage seat is fixedly connected to a drive motor, the drive motor is fixedly connected to a swing arm, the swing arm and the linkage seat are respectively fixedly connected to a group of semicircular rotation limit components, and the two groups of semicircular rotation limit components are movably connected to each other; An ultrasonic flaw detection structure connected to the track-mimicking driving structure.

2. A rail transit locomotive wheel set flaw detection test bench according to claim 1, characterized in that: The wheelset limiting lifting structure includes a pad floor fixedly connected to an underground frame, the pad floor is fixedly connected to two groups of first active telescopic frames, the underground frame is fixedly connected to two groups of second active telescopic frames, the moving ends of the two groups of second active telescopic frames are commonly fixedly connected to a track frame, the track frame is fixedly connected to the moving ends of the two groups of the first active telescopic frames, the track frame is fixedly connected to a first motor, the output end of the first motor is fixedly connected to a first screw rod, the first screw rod is threadedly connected to a suspension, the suspension is rotatably connected to a plurality of casters arranged in a groove of the track frame, the suspension is fixedly connected to two groups of third active telescopic frames, the moving end of the third active telescopic frame is fixedly provided with a double-groove plate, the double-groove plate is provided with two groups of symmetrically arranged transverse grooves, each group of transverse grooves is slidably connected with a cam frame, the cam frame is fixedly connected with a tapered roller, the cam frame is rotatably connected to the suspension, the suspension is provided with an I-shaped groove, and a gearbox docking assembly is movably mounted on the I-shaped groove.

3. A rail transit locomotive wheel set flaw detection test bench according to claim 2, characterized in that: The gearbox docking assembly includes a hole frame slidably connected to the I-shaped slot, a plurality of connection holes are provided on the hole frame, a screw is threadedly connected to the hole frame, and a crank is fixedly connected to the screw.

4. A rail transit locomotive wheel set flaw detection test bench according to claim 1, characterized in that: The track-mimicking driving structure includes two groups of fixed frames fixedly mounted on the buried frame, the two groups of fixed frames are symmetrically arranged on the buried frame, the fixed frame is fixedly connected with a clutch, the clutch is coaxially fixedly connected with a servo motor, the servo motor is fixedly connected to the fixed frame, the end of the clutch away from the servo motor is connected with a reducer, the reducer is fixedly mounted on the top surface of the fixed frame, the output end of the reducer is coaxially connected with a photoelectric encoder, the output end of the reducer is coaxially fixedly connected with a conical load wheel, the fixed frame is fixedly connected with a fourth active telescopic frame, the mobile end of the fourth active telescopic frame is fixedly connected with a power-assisting plate, and the power-assisting plate is movably connected to the conical load wheel.

5. The rail transit locomotive wheel set flaw detection test bench according to claim 1, characterized in that: The variable pitch lifting part includes two groups of active telescopic rods fixedly connected to the buried frame, the moving ends of the two groups of active telescopic rods are commonly fixedly connected to a cross frame, a double-output shaft motor is fixedly installed in the middle of the cross frame, the output end of the double-output shaft motor is fixedly connected to a second screw rod, the second screw rod is threadedly connected to a slider slidably connected to the cross frame, and the slider is fixedly connected to a linkage seat.

6. A rail transit locomotive wheel set flaw detection test bench according to claim 1, characterized in that: The semicircular rotation limit assembly includes a connecting frame, a connecting frame of the semicircular rotation limit assembly installed on the swing arm is fixedly connected to the swing arm, and the connecting frame of the semicircular rotation limit assembly installed on the linkage seat is fixedly connected to the linkage seat. The connecting frame is fixedly connected to the rotation limit frame, and the rotation limit frame is rotatably connected to a semi-ring frame, and the semi-ring frame is fixedly connected to a semicircular gear ring. The connecting frame is fixedly connected to a second motor, and an output end of the second motor is fixedly connected to a gear meshing with the semicircular gear ring. The semicircular gear ring is fixedly connected to three groups of sleeves, and each group of connecting frames is fixedly connected to three groups of rectangular sleeves, and the rectangular sleeve is slidably connected to an extension bar, and the extension bar is fixedly connected to a support rod slidably connected to the sleeve body, and the extension bar is fixedly connected to a pressure sensor, and the pressure sensor is fixedly connected to a sleeve frame, and the sleeve frame is connected to a shell through multiple groups of bolts, and the shell is fixedly connected to an arc-shaped concave frame.

7. A rail transit locomotive wheel set flaw detection test bench according to claim 4, characterized in that: The ultrasonic flaw detection structure includes a fifth active telescopic frame fixedly connected to a fixed frame, a sixth active telescopic frame fixedly connected to a movable end of the fifth active telescopic frame, a first ultrasonic probe fixedly connected to a movable end of the sixth active telescopic frame, the frame fixedly connected to a track frame, a third motor fixedly connected to an output end of the third motor fixedly connected to a reverse threaded rod, the reverse threaded rod threadedly connected to two groups of symmetrically arranged transverse sleeves, the transverse sleeves are slidably connected to the track frame, the transverse sleeves are fixedly connected to a seventh active telescopic frame, and a second ultrasonic probe fixedly connected to a movable end of the seventh active telescopic frame.

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