A rotating driving mechanism for axle end of axle flaw detection

Abstract

The utility model belongs to the field of flaw detection equipment, disclose a kind of axle flaw detection axle end rotation driving mechanism, the utility model can be clamped from the both ends of axle, contact area is small, and by the friction disc and central positioning member that can be axially elastically active, axle can be clamped by elastic force in clamping process, power controllable, after clamping, it can stably drive axle rotation, more conducive to the accurate detection of ultrasonic wave, also can avoid damage to axle.

Description

Technical Field

[0001] This utility model belongs to the field of flaw detection equipment technology, specifically relating to a rotary drive mechanism for axle flaw detection shaft end. Background Technology

[0002] During the manufacturing process, train axles are prone to defects such as cracks and porosity, necessitating non-destructive testing of their internal structure. To address the rapidly increasing market demand and rising production standards for train axles, one existing technical solution utilizes ultrasonic testing. This involves placing the axle in a water tank containing a coupling agent. The tank is equipped with support rollers that support and rotate the axle, and an ultrasonic probe is then used to inspect it. However, this technique suffers from friction between the support rollers and the axle during rotation, potentially causing surface damage. Furthermore, the axle's unstable motion during rotation can lead to inaccurate testing results. Utility Model Content

[0003] In view of this, the purpose of this utility model is to provide a rotating drive mechanism for axle flaw detection, so as to solve the problem that existing detection devices are prone to causing damage to the axle surface during axle rotation detection.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A rotating drive mechanism for axle flaw detection includes a clamping assembly one and a clamping assembly two, wherein the clamping assembly one and the clamping assembly two are movable relative to each other in a clamping direction to clamp the axle axially.

[0006] Both the clamping assembly one and the clamping assembly two include a rotating component, a friction disk, and a central positioning component. The friction disk and the central positioning component are disposed on one axial end of the rotating component. The friction disk contacts the end of the axle, and the central positioning component contacts the center of the end face of the axle.

[0007] The rotating component of the clamping assembly one and / or the clamping assembly two is connected to a driving assembly, which drives the rotating component to rotate about the axial direction.

[0008] The friction disc and center positioning element of at least one of the clamping assembly one and clamping assembly two can move elastically along the axial direction.

[0009] In one possible implementation, the center positioning member protrudes axially from the friction disc in its free state to insert into the center hole of the axle end face.

[0010] In one possible implementation, the rotating component has a mounting cavity, a movable seat is slidably fitted inside the mounting cavity, an elastic element is provided between the movable seat and the mounting cavity to allow the movable seat to slide axially, and the movable seat extends out of the rotating component and is connected to the center positioning element.

[0011] In possible implementations, the clamping assembly one and clamping assembly two further include a movable base and a rotary base, the rotating member being rotatably mounted on the movable base via the rotary base, and the movable base being slidably mounted on the guide rail.

[0012] In a possible implementation, a bearing component is provided axially between the rotary seat and the rotating component, and a rotary sealing seat is rotatably fitted on the outside of the rotating component to seal the fitting gap between the rotary seat and the rotating component to form a waterproof seal.

[0013] In possible implementations, the bearing components include deep groove ball bearings and double row tapered bearings arranged axially.

[0014] In one possible implementation, the friction disc of the clamping assembly one is connected to the rotating member of the clamping assembly one via the elastic element two, and the friction disc of the clamping assembly two is fixedly connected to the rotating member of the clamping assembly two.

[0015] In one possible implementation, the clamp assembly one and clamp assembly two are placed in a water tank for holding the coupling agent.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The axle end rotation drive mechanism for axle flaw detection of this utility model can clamp the axle from both ends through two sets of relatively movable clamping components one and two. The contact area is small, and through the axially elastic friction disc and the center positioning component, the axle can be clamped by elastic force during the clamping process. The force is controllable. After clamping, it can stably drive the axle to rotate, which is more conducive to accurate ultrasonic detection and can also avoid damage to the axle. Attached Figure Description

[0018] Figure 1 This is a top view of a rotary drive mechanism for axle flaw detection;

[0019] Figure 2 A cross-sectional view of a rotary drive mechanism for axle flaw detection;

[0020] Figure 3 This is a partially enlarged schematic diagram of a rotary drive mechanism for axle flaw detection.

[0021] Figure 4A perspective view of a rotary drive mechanism for axle flaw detection when installed on a flaw detection device;

[0022] Figure 5 for Figure 4 A magnified view of a portion of the image;

[0023] Figure 6 This is a front view of a rotary drive mechanism for axle flaw detection when installed on a flaw detection device.

[0024] Figure 7 A top view of a rotary drive mechanism for axle flaw detection when installed on a flaw detection device;

[0025] Figure 8 This is a side view of a rotary drive mechanism for axle flaw detection when installed on a flaw detection device.

[0026] In the diagram: 1-Clamping assembly one; 11-Rotating seat; 12-Friction disc; 13-Moving base; 14-Drive motor; 15-Reducer; 16-Coupling; 17-Rotating component; 18-Guide shaft; 19-Moving seat; 110-Deep groove ball bearing; 111-Rotary seal seat; 112-Elastic element one; 113-Elastic element two; 114-Center positioning element; 115-Double row tapered bearing; 2-Clamping assembly two; 3-Axle; 4-Lifting and supporting mechanism; 5-Water tank; 6-Shaft connecting V-frame; 7-Robot; 8-Robot lateral movement mechanism. Detailed Implementation

[0027] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to specific embodiments.

[0028] Please refer to Figures 1-8 As shown, an embodiment of this application provides a rotating drive mechanism for axle flaw detection, including a clamping assembly 1 and a clamping assembly 2, which are movable relative to each other to clamp the axle 3 axially.

[0029] The clamping assembly 1 and the clamping assembly 2 can move relative to each other. Through relative movement, the axle 3 can be clamped axially from both ends. Since this clamping method only contacts the ends of the axle 3, the contact area is smaller than that in the prior art where the support roller contacts the circumference of the axle 3, which is more conducive to avoiding damage to the axle 3.

[0030] Please refer to Figures 1-3As shown in the embodiments of this application, the clamping assembly 1 and the clamping assembly 2 may include a rotating member 17, a friction disk 12 and a center positioning member 114. The friction disk 12 and the center positioning member 114 are disposed on one end of the rotating member 17 in the axial direction. The friction disk 12 is in contact with the end of the axle 3, and the center positioning member 114 is in contact with the center of the end face of the axle 3.

[0031] The rotating component 17 is rotatable. One end of the axle 3 it is used to clamp is provided with a friction disk 12 and a center positioning component 114. The friction disk 12 is used to abut against the end section of the axle 3, and the center positioning component 114 is used to abut against the center of the end section of the axle 3. This point-to-surface contact method can not only center the axle 3, but also make the axle 3 and the friction disk 12 have a large friction force through clamping, so that the axle 3 can be stably clamped and rotated, thereby realizing non-destructive testing and improving the accuracy of testing.

[0032] To drive the rotation of axle 3, please continue to refer to... Figures 1-3 The rotating member 17 of clamp assembly 1 and / or clamp assembly 2 is connected to a drive assembly, which drives the rotating member 17 to rotate around the axial direction. The drive assembly can drive the rotating member 17 of clamp assembly 1 to rotate, and clamp assembly 2 will follow suit, thus realizing the rotation drive of axle 3. Of course, the rotating members 17 of clamp assembly 1 and clamp assembly 2 can be connected to the drive assembly simultaneously and driven synchronously through the drive assembly, thus also realizing the rotation drive of axle 3. The above two driving methods can be selected and configured according to actual needs and are not limited. In specific implementation, the drive assembly may include components such as drive motor 14, reducer 15, and coupling 16.

[0033] Furthermore, in the embodiments of this application, at least one of the clamping assembly 1 and the clamping assembly 2, the friction disc 12 and the center positioning member 114, can move elastically along the axial direction.

[0034] The elastically movable friction disc 12, in conjunction with the central positioning component 114, generates friction between the friction disc 12 and the end of the axle 3 through the reaction force generated by the elastic movement when it contacts and presses against the axle 3. This allows the axle 3 to rotate together when the rotating component 17 rotates. Furthermore, the elastically movable arrangement of the friction disc 12 and the central positioning component 114 makes the force controllable, which is more conducive to achieving non-destructive testing of the axle 3.

[0035] Through the above technical solution, the two sets of relatively movable clamping components 1 and 2 can clamp the axle 3 from both ends. The contact area is small, and through the axially elastic friction disc 12 and the center positioning component 114, the axle 3 can be clamped by elastic force during the clamping process. The force is controllable. After clamping, it can stably drive the axle 3 to rotate, which is more conducive to the accurate detection of ultrasonic waves and can also avoid damage to the axle 3.

[0036] In one embodiment, combined with Figure 3 As shown, the center positioning member 114 protrudes axially from the friction disc 12 in the free state to be inserted into the center hole of the end face of the axle 3.

[0037] The axle 3 under inspection is a rotatable shaft with center holes at both ends. By utilizing this feature of the axle 3, the center holes at both ends of the axle 3 can be used in conjunction with the center positioning component 114 to position the axle 3. This avoids damage to the surface of the axle 3 and also makes the clamping accurate and stable.

[0038] Specifically, the friction disc 12 has a through hole at its center for the center positioning member 114 to pass through. The center positioning member 114 is preferably a top cone structure adapted to the center hole of the axle 3.

[0039] In a preferred embodiment of the rotating member 17, combined with Figure 2 and Figure 3 As shown, the rotating component 17 is provided with a mounting cavity, and a movable seat 19 is slidably fitted in the mounting cavity. An elastic element 112 is provided between the movable seat 19 and the mounting cavity to allow the movable seat 19 to slide along the axial direction. The movable seat 19 extends out of the rotating component 17 and is connected to the center positioning element 114.

[0040] The movable seat 19 is slidably mounted in the mounting cavity of the rotating component 17, and is movably mounted in the mounting cavity by an elastic element 112, such as a compression spring. The elasticity of the elastic element 112 allows the center positioning element 114 to elastically abut against the center hole of the axle 3, enabling clamping and positioning while avoiding damage to the axle 3 from hard contact. A groove can be provided at the end of the movable seat 19 opposite to the center positioning element 114 for mounting the elastic element 112. This allows the use of a longer spring as the elastic element 112 and provides sufficient reaction force from the friction disc 12 to generate greater friction on the end face of the axle 3.

[0041] During the clamping process of axle 3, the center positioning member 114 extends axially toward axle 3 through the elastic member 112. When it comes into contact with the center hole of the axle 3 being inspected and is damaged, the elastic member 112 is compressed and the moving seat 19 moves away from axle 3. After the center positioning member 114 moves a certain distance, the friction disc 12 contacts the end face of axle 3 and compresses the spring between the friction disc 12 and the rotating member 17. Friction is generated between the friction disc 12 and the end face of axle 3, thus enabling the flaw detection of axle 3.

[0042] In the specific implementation process, combined with Figure 3 and Figure 5 As shown, the friction disc 12, which can move elastically along the axial direction, is guided by a component such as a screw as a guide shaft 18. The friction disc 12 is positioned at the end of the rotating member 17 so that it can move axially through the guide shaft 18. An elastic element 113 is provided on the outside of the guide shaft 18 or between the friction disc 12 and the rotating member 17. The elastic element 113 is preferably a spring. The elastic element 113 can achieve elastic contact of the friction disc 12.

[0043] Please refer to Figures 1-3 As shown in the embodiments of this application, the clamping assembly 1 and the clamping assembly 2 further include a movable base 13 and a rotary base 11. The rotating member 17 is rotatably mounted on the movable base 13 via the rotary base 11, and the movable base 13 is slidably mounted on the guide rail.

[0044] The movable base 13 is mounted on a guide rail, which is parallel to the axis of the axle 3 during clamping. Clamping assembly 1 and clamping assembly 2 can move relative to each other via the movable base 13 mounted on the guide rail. In specific implementations, a drive mechanism can be provided to drive the movable base 13 to move on the guide rail. This drive mechanism can be a lead screw and nut pair mechanism or a hydraulic cylinder, etc. A rotary seat 11 is mounted on the movable base 13. The rotating component 17 and its friction disc 12 are integrally mounted on the rotary seat 11, and the rotary seat 11 and the rotating component 17 are rotatably connected, thus achieving rotation under the drive of the drive assembly.

[0045] To achieve better rotation of the rotating component 17, a bearing component is further provided axially between the rotary seat 11 and the rotating component 17, and a rotary sealing seat 111 is provided on the outer side of the rotating component 17 to seal the fitting gap between the rotary seat 11 and the rotating component 17 to form a waterproof seal.

[0046] In this way, the rotary seal seat 111, while forming a rotary seal fit with the rotating component 17, can also seal the fit gap between the rotary seat 11 and the rotating component 17, thereby achieving a seal between the rotating component 17 and the rotating component. This allows the axle flaw detection shaft end rotary drive mechanism to be used for underwater operation, ensuring the mechanism's sealing performance. The bearing component between the rotary seat 11 and the rotating component 17 is used to enable the rotating component to rotate. Of course, the rotary seat 11 and the moving base 13 are also sealed together to meet underwater sealing requirements.

[0047] Preferred, combined Figure 2 and Figure 3 As shown, the bearing assembly includes a deep groove ball bearing 110 and a double-row tapered roller bearing 115 arranged axially. The deep groove ball bearing 110 and the double-row tapered roller bearing 115 enable the longer rotating member 17 to rotate more stably and flexibly in the swivel seat 11.

[0048] Please refer to Figure 2 As shown, in the embodiments of this application, the friction disc 12 of the clamping assembly 1 is connected to the rotating member 17 of the clamping assembly 1 via the elastic member 2 113, and the friction disc 12 of the clamping assembly 2 is fixedly connected to the rotating member 17 of the clamping assembly 2.

[0049] The clamping assembly 1 is elastically movable while the clamping assembly 2 is fixedly set. This allows for elastic contact between the friction disc 12 and the end face of the axle 3 during clamping, providing frictional force and reducing the number of parts used.

[0050] In the specific implementation process, combined with Figures 4-7 As shown, clamp assembly 1 and clamp assembly 2 are placed in a water tank 5 for holding the coupling agent. When clamping the axle 3 for flaw detection, clamp assembly 1 and clamp assembly 2, in conjunction with an ultrasonic testing probe in the environment of the coupling agent, can achieve the detection of the axle 3.

[0051] Combination Figures 1-8 As shown in this application embodiment, the working principle of the axle flaw detection axle end rotation drive mechanism is as follows:

[0052] The axle 3 under inspection is subjected to ultrasonic non-destructive testing. During ultrasonic testing, water is used as a coupling agent between the ultrasonic probe and the axle 3 to reduce the acoustic impedance difference between the probe and the axle 3, thereby reducing the reflection loss of ultrasonic energy at this interface. The water tank 5 is fixed to the frame. During normal operation, the water tank 5 contains water. When the axle 3 under inspection is lowered to the same height as the center positioning pieces 114 in the left and right directions at both ends via the lifting and supporting mechanism 4 located in the water tank 5, the center positioning pieces 114 are driven by the drive assembly to hold the axle 3 in place, suspending it in the air. At this time, the friction disc 12 contacts the end face of the axle 3. When the friction disc 12 rotates with the rotating component 17 driven by the drive assembly, it forces the axle 3 to rotate, facilitating ultrasonic testing of the entire axle 3. The frame is the foundation of the equipment, and all components are installed and fixed on the frame. Clamping assemblies 1 and 2 are connected to the bracket in water tank 5 and mounted on a linear guide rail. Driven by the drive assembly, clamping assemblies 1 and 2 move left and right. Clamping assembly 1 includes a friction disc 12, drive assembly, spring, and center positioning element 114, enabling the clamping and rotation of the inspected axle 3. The lifting mechanism 4 in water tank 5 uses a lifting electric cylinder system. When the cylinder shaft is fully extended, the connecting V-shaped bracket 6 at the cylinder shaft end protrudes above the water surface. When the inspected axle 3 is transferred from the previous process on the axle 3 production line, it can be caught on the water surface, preventing the transfer tool from contacting the water and thus avoiding corrosion. After the connecting V-shaped bracket 6 connects to the axle, the sensor on the connecting V-shaped bracket 6 sends a command, causing the lifting electric cylinder to descend. The descent stops when the cylinder reaches the same height as the center positioning elements 114 on both sides. At this time, the left and right clamping assemblies 1 and 2 move towards the center of the equipment simultaneously, pressing against the center hole of the axle 3 through the center positioning component 114 and lifting the axle 3. After the sensors on clamping assemblies 1 and 2 detect that the center positioning component 114 has pressed against the center hole of the axle 3, the left and right electric cylinders continue to descend, ensuring that the connecting V-frame 6 maintains a sufficient distance from the axle 3 to avoid false signals during ultrasonic testing. The ultrasonic testing probe mechanisms on the left and right sides are mounted on the robot 7, enabling the probe to detect the axle 3 at any angle; the robot 7 is mounted on the left and right robot lateral movement mechanisms 8 respectively, which can cover the full axle body testing of axles of different lengths. After the ultrasonic testing is completed, the left and right electric cylinders drive the connecting V-frame 6 to rise, and after contacting the axle 3, the left and right clamping assemblies 1 and 2 pull the center positioning component 114 out. The electric cylinders on the left and right sides lift the inspected axle 3 up again. After it rises out of the water, the equipment stops running and waits for the transfer tool to transfer the axle 3 to the next process.

[0053] The above are merely preferred embodiments of this utility model. It should be noted that the above preferred embodiments should not be considered as limitations on this utility model, and the scope of protection of this utility model should be determined by the scope defined in the claims. For those skilled in the art, several improvements and modifications can be made without departing from the spirit and scope of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. A rotary drive mechanism for axle flaw detection, characterized in that, It includes a clamping assembly one (1) and a clamping assembly two (2), which are movable relative to each other to clamp the axle (3) axially; Both the first clamping assembly (1) and the second clamping assembly (2) include a rotating member (17), a friction disc (12), and a center positioning member (114). The friction disc (12) and the center positioning member (114) are disposed on one end of the rotating member (17) in the axial direction. The friction disc (12) is in contact with the end of the axle (3), and the center positioning member (114) is in contact with the center of the end face of the axle (3). The rotating member (17) of the clamping assembly one (1) and / or the clamping assembly two (2) is connected to a driving assembly, which drives the rotating member (17) to rotate about the axial direction; The friction disc (12) and center positioning element (114) of at least one of the clamping assembly one (1) and clamping assembly two (2) are elastically movable along the axial direction.

2. The axle end rotation drive mechanism for axle flaw detection as described in claim 1, characterized in that, The center positioning member (114) protrudes axially from the friction disc (12) in the free state to be inserted into the center hole of the end face of the axle (3).

3. The axle end rotary drive mechanism for axle flaw detection as described in claim 1, characterized in that, The rotating component (17) is provided with a mounting cavity, and a movable seat (19) is slidably fitted in the mounting cavity. An elastic element (112) is provided between the movable seat (19) and the mounting cavity to allow the movable seat (19) to slide along the axial direction. The movable seat (19) extends out of the rotating component (17) and is connected to the center positioning element (114).

4. The axle end rotation drive mechanism for axle flaw detection as described in claim 1, characterized in that, The clamping assembly one (1) and clamping assembly two (2) further include a movable base (13) and a rotary base (11). The rotating component (17) is rotatably mounted on the movable base (13) via the rotary base (11). The movable base (13) is slidably mounted on the guide rail.

5. The axle end rotation drive mechanism for axle flaw detection as described in claim 4, characterized in that, A bearing component is provided axially between the rotary seat (11) and the rotating component (17). A rotary sealing seat (111) is provided on the outer side of the rotating component (17) to seal the fit gap between the rotary seat (11) and the rotating component (17) to form a waterproof seal.

6. The axle end rotation drive mechanism for axle flaw detection as described in claim 5, characterized in that, The bearing components include a deep groove ball bearing (110) and a double row tapered roller bearing (115) arranged axially.

7. The axle end rotation drive mechanism for axle flaw detection as described in claim 1, characterized in that, The friction disc (12) of the clamping assembly one (1) is connected to the rotating member (17) of the clamping assembly one (1) via the elastic member two (113), and the friction disc (12) of the clamping assembly two (2) is fixedly connected to the rotating member (17) of the clamping assembly two (2).

8. The axle end rotation drive mechanism for axle flaw detection as described in claim 1, characterized in that, The clamping assembly one (1) and clamping assembly two (2) are placed in a water tank (5) for holding the coupling agent.

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