Hollow axle docking device and flaw detector

Abstract

The utility model relates to the technical field of hollow axle detection, in particular to a hollow axle butt joint device and a flaw detector, the hollow axle butt joint device comprises a cylinder for a probe rod to pass through, one end of the cylinder is used for being connected with the flaw detector, and the other end of the cylinder is sleeved with a hollow electromagnet. The hollow electromagnet is in backstop connection with the first backstop of the barrel, and an elastic assembly is arranged between the hollow electromagnet and the first backstop of the barrel. The cylinder plays a role in guiding the probe rod, the hollow electromagnet has magnetism after being electrified and can be in contact with the end face of the hollow axle to be detected and then be tightly attached to the end face of the hollow axle to be detected, and the elastic assembly can provide buffering when the hollow electromagnet makes contact with the end face of the hollow axle to be detected. And the elastic assembly can adjust the attaching tightness between the hollow electromagnet and the to-be-tested hollow axle.

Description

Technical Field

[0001] The utility model relates to the technical field of hollow axle detection, in particular to a hollow axle docking device and a flaw detector. Background Art

[0002] The hollow axle flaw detector is a device for flaw detection of hollow axles of high-speed railway vehicles. When working, the probe of the hollow axle flaw detector extends into the hollow axle to emit ultrasonic waves to detect the hollow axle. The existing flaw detector needs to be connected to the hollow axle through an adapter, which plays the role of guiding and fastening. The existing adapter and the hollow axle to be tested are mainly fastened by bolts. Before and after the flaw detection operation, the adapter needs to be manually assembled and disassembled, which is time-consuming and not conducive to automation. Utility Model Content

[0003] The utility model aims to provide a hollow axle docking device to address the problem that in the prior art, an adapter and a hollow axle to be tested are mainly fastened and connected by bolts, and the adapter needs to be manually assembled and disassembled before and after the flaw detection operation, which is time-consuming and not conducive to automation.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A hollow axle docking device comprises a cylinder for a probe rod to pass through, one end of the cylinder is used to connect with a flaw detector, and the other end is sleeved with a hollow electromagnet, the hollow electromagnet is connected to a first stopper of the cylinder, and an elastic component is provided between the hollow electromagnet and the first stopper of the cylinder.

[0006] Preferably, the hollow electromagnet is sleeved on the outside of the cylinder, a plurality of guide pillars are provided between the first stopper and the hollow electromagnet, the guide pillars are slidably connected to the hollow electromagnet, and the elastic component is sleeved on the outside of the guide pillars between the first stopper and the hollow electromagnet.

[0007] Preferably, the elastic component includes a spring, one end of the spring is connected to the first stopper, and the other end is connected to the hollow electromagnet, the first stopper is connected to a displacement adjustment device, and the displacement adjustment device is used to adjust the axial distance between the first stopper and the hollow electromagnet.

[0008] Preferably, the displacement adjustment device comprises a screw rod arranged along the axial direction of the cylinder, and the screw rod passes through the first stopper and is fixed on the second stopper of the cylinder through a guide sleeve.

[0009] Preferably, the first stopper comprises a stop ring sleeved on the outer side of the cylinder, and the plurality of guide pillars are evenly distributed on the stop ring.

[0010] Preferably, a sliding sleeve is provided on the outer side of the cylinder, a proximity sensor is provided on the end of the sliding sleeve, the sliding sleeve is provided with a waist-shaped hole arranged along the axial direction of the cylinder, and the adjusting screw passes through the waist-shaped hole to be connected with the cylinder.

[0011] A flaw detector, comprising:

[0012] A visual positioning device, used to obtain the position information of the hollow axle to be tested;

[0013] The flaw detection device comprises a flaw detection rod, wherein the flaw detection rod is telescopically connected to the cylinder of the hollow axle docking device;

[0014] A displacement driving device, connected to the flaw detection device, and used to drive the flaw detection device to dock with the hollow axle to be tested;

[0015] The control device is communicatively connected with the visual positioning device, the flaw detection device and the displacement drive device, and controls the displacement drive device to drive the flaw detection device to achieve docking with the axle to be tested according to the position information of the axle to be tested obtained by the visual positioning device.

[0016] Preferably, the end of the flaw detection rod is provided with an arc-shaped guide head.

[0017] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0018] 1. The hollow electromagnet of the utility model has magnetism after being energized, and can fit tightly with the end face of the hollow axle to be tested after contacting. After the hollow electromagnet is powered off, it loses its magnetism and can be easily separated from the hollow axle to be tested. An elastic component is arranged between the hollow electromagnet and the first stopper, and the elastic component can provide a buffer when the hollow electromagnet contacts the end face of the hollow axle to be tested, and the elastic component can adjust the tightness of the fit between the hollow electromagnet and the hollow axle to be tested;

[0019] 2. The utility model can adjust the elastic force between the cylinder and the hollow electromagnet by increasing or decreasing the number of installed elastic components, which is conducive to adjusting the degree of fit between the hollow electromagnet and the hollow axle to be measured. In addition, by changing the axial spacing between the first stopper and the hollow electromagnet, the elastic deformation of the elastic component between the first stopper and the hollow electromagnet can be changed, thereby adjusting the degree of fit between the hollow electromagnet and the hollow axle to be measured. Furthermore, by changing the axial position of the proximity sensor on the cylinder, the displacement distance after the hollow electromagnet contacts the hollow axle to be measured can be adjusted, and the compression deformation of the elastic component can be changed, thereby adjusting the degree of fit between the hollow electromagnet and the hollow axle to be measured. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a cross-sectional view of the hollow axle docking device in the embodiment;

[0021] Figure 2 for Figure 1 Enlarged view of part A in the middle;

[0022] Figure 3 Schematic diagram of the displacement adjustment device in the embodiment;

[0023] Figure 4 for Figure 3 The schematic diagram of the hollow electromagnet is omitted;

[0024] Figure 5 It is a three-dimensional diagram of the hollow axle docking device in the embodiment;

[0025] Figure 6 for Figure 5 Enlarged view of middle part B;

[0026] Figure 7 It is a schematic diagram of the connection between the hollow axle connection device of the embodiment and the hollow axle to be tested;

[0027] Markings in the figure: 100-hollow axle, 1-cylinder, 2-hollow electromagnet, 3-first stopper, 4-elastic component, 5-guide column, 6-displacement adjustment device, 601-screw, 602-guide sleeve, 7-second stopper, 8-sliding sleeve, 801-waist hole, 9-proximity sensor, 10-adjusting screw, 11-flaw detection rod, 12-guide head. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0029] like Figure 1-6As shown, a hollow axle docking device of this embodiment includes a cylinder 1 for a probe rod to pass through, one end of the cylinder 1 is used to connect with a flaw detector, the probe rod of the flaw detector is telescopically connected to the inside of the cylinder 1, the cylinder 1 and the probe rod are coaxially arranged, and the cylinder 1 plays a guiding role for the probe rod. A hollow electromagnet 2 is sleeved on the other end of the cylinder 1, and the hollow electromagnet 2 is sleeved on the outside of the end of the cylinder 1. In other feasible implementations, the hollow electromagnet 2 can also be sleeved in the cylinder 1. The cylinder 1 is provided with a first stopper 3, which is a boss structure at the end of the cylinder 1, and the first stopper 3 is used to limit the hollow electromagnet 2. In other feasible embodiments, the first stopper 3 is a concave structure formed by reducing the outer diameter of the cylinder 1. The hollow electromagnet 2 has magnetism after being energized, and can fit tightly with the end face of the hollow axle 100 to be tested after contacting. After the hollow electromagnet 2 is powered off, it loses magnetism and can be easily separated from the hollow axle 100 to be tested. An elastic component 4 is arranged between the hollow electromagnet 2 and the first stopper 3, and the elastic component 4 can provide a buffer when the hollow electromagnet 2 contacts the end face of the hollow axle 100 to be tested, and the elastic component 4 can adjust the tightness of the fit between the hollow electromagnet 2 and the hollow axle 100 to be tested. Specifically, the hollow electromagnet 2 is adsorbed and connected with the axle to be tested after being energized. If the elastic component 4 is compressed, the restoring force of the elastic component 4 makes the fit between the hollow electromagnet 2 and the hollow axle 100 tighter. If the elastic component 4 is in a body length state, the restoring force of the elastic component 4 makes the fit between the hollow electromagnet 2 and the hollow axle 100 weakened.

[0030] In this embodiment, the cylinder 1 and the hollow electromagnet 2 are both circular. In other feasible embodiments, the cylinder 1 may be square, and correspondingly the hollow electromagnet 2 may be a matching square.

[0031] like Figure 3-4As shown, in this embodiment, the elastic components 4 have a plurality of them, which are evenly distributed between the first stopper 3 and the hollow electromagnet 2. The elastic components 4 include a spring, one end of which is connected to the first stopper 3 and the other end is connected to the hollow electromagnet 2. A guide column 5 is provided in each of the elastic components 4, and the guide column 5 is used to guide the elastic components 4. The first stopper 3 is a connected whole, and the first stopper 3 includes a retaining ring sleeved on the outside of the cylinder 1, and the guide columns 5 are evenly distributed at the retaining ring. In other feasible embodiments, the first stopper 3 can be independent of each other, and each of the elastic components 4 and the guide columns 5 is correspondingly provided with the first stopper 3. Preferably, the number of the elastic components 4 is 4, and there are correspondingly 4 guide columns 5. Increasing or decreasing the number of installed elastic components 4 can adjust the elastic force between the cylinder 1 and the hollow electromagnet 2, which is conducive to adjusting the degree of fit between the hollow electromagnet 2 and the hollow axle 100 to be tested.

[0032] In this embodiment, the first stopper 3 is connected to a displacement adjustment device 6, and the displacement adjustment device 6 is used to adjust the axial distance between the first stopper 3 and the hollow electromagnet 2. By changing the axial distance between the first stopper 3 and the hollow electromagnet 2, the elastic deformation of the elastic component 4 between the first stopper 3 and the hollow electromagnet 2 can be changed, thereby adjusting the degree of fit between the hollow electromagnet 2 and the hollow axle 100 to be tested. In other feasible embodiments, the position of the first stopper 3 on the cylinder 1 is fixed.

[0033] In this embodiment, the displacement adjustment device 6 includes a screw 601 arranged axially along the cylinder 1, and the screw 601 passes through the first stopper 3 and is fixed on the second stopper 7 of the cylinder 1 through a guide sleeve 602. The second stopper 7 is a concave structure formed by reducing the outer diameter of the cylinder 1. In other feasible embodiments, the second stopper 7 can be a convex structure on the outer side of the cylinder 1. The second stopper 7 is used to position the screw 601. The screw 601 passes through the first stopper 3 and the guide sleeve 602 in sequence and is threadedly connected with the second stopper 7, thereby fixing the position of the first stopper 3. By changing the length of the guide sleeve 602, the axial position of the first stopper 3 along the cylinder 1 can be adjusted, thereby changing the axial spacing between the first stopper 3 and the hollow electromagnet 2. In other feasible embodiments, the displacement adjustment device 6 is such as a pin, and the cylinder 1 is provided with a plurality of axially arranged positioning holes. The first stopper 3 is fixed at different positioning holes by the pin to achieve displacement adjustment of the first stopper 3.

[0034] like Figure 5As shown, in this embodiment, a sliding sleeve 8 is provided on the outside of the cylinder 1, and a proximity sensor 9 is provided at the end of the sliding sleeve 8. The proximity sensor 9 is used to sense the position of the hollow axle 100 to be tested. The sliding sleeve 8 is provided with a waist-shaped hole 801 arranged along the axial direction of the cylinder 1, and the adjusting screw 10 passes through the waist-shaped hole 801 and is connected to the cylinder 1. The axial position of the proximity sensor 9 at the end of the sliding sleeve 8 can be adjusted by the waist-shaped hole 801.

[0035] This embodiment also provides a flaw detector, including:

[0036] A visual positioning device, used to obtain position information of the hollow axle 100 to be tested, including the axis position of the hollow axle 100 to be tested;

[0037] The flaw detection device comprises a flaw detection rod 11, wherein the flaw detection rod 11 is telescopically connected to the cylinder 1 of the hollow axle docking device described in this embodiment;

[0038] A displacement driving device, connected to the flaw detection device, and used to drive the flaw detection device to dock with the hollow axle 100 to be tested;

[0039] The control device is communicatively connected with the visual positioning device, the flaw detection device and the displacement drive device, and controls the displacement drive device to drive the flaw detection device to achieve docking with the axle to be tested according to the position information of the axle to be tested obtained by the visual positioning device.

[0040] In this embodiment, an arc-shaped guide head 12 is provided at the end of the flaw detection rod 11, which is beneficial to the precise guiding alignment between the flaw detection device and the hollow axle 100 to be tested during the docking process.

[0041] like Figure 7 The figure shows a schematic diagram of the flaw detector device docking with the hollow axle 100 to be tested. The rest of the flaw detector is not shown. The arc-shaped guide head 12 at the end of the probe rod extends out of the end of the hollow electromagnet 2. The visual positioning device detects the axis position of the hollow axle 100 to be tested, and the control device drives the displacement drive device to drive the axis of the cylinder 1 of the docking device to align with the axis of the hollow axle 100 to be tested, and the docking device moves toward the hollow axle 100 to be tested for docking. The arc-shaped guide head 12 at the end of the probe rod realizes the precise positioning between the docking device and the hollow axle 100 to be tested during the docking process. After the proximity sensor 9 senses the hollow axle 100 to be tested, the control device controls the displacement drive device to stop driving, and the elastic component 4 can provide a buffer when the hollow electromagnet 2 contacts the end face of the hollow axle 100 to be tested.

[0042] In this embodiment, by changing the axial position of the proximity sensor 9 on the cylinder 1, the displacement distance after the hollow electromagnet 2 contacts the hollow axle 100 to be tested can be adjusted, the compression deformation amount of the elastic component 4 can be changed, and the degree of fit between the hollow electromagnet 2 and the hollow axle 100 to be tested can be adjusted.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A hollow axle docking device, characterized in that: The invention comprises a cylinder (1) for a probe rod to pass through, one end of the cylinder (1) being used to be connected to a flaw detector, and the other end being sleeved with a hollow electromagnet (2), the hollow electromagnet (2) being stop-connected to a first stopper (3) of the cylinder (1), and an elastic component (4) being provided between the hollow electromagnet (2) and the first stopper (3) of the cylinder (1).

2. A hollow axle docking device according to claim 1, characterized in that: The hollow electromagnet (2) is sleeved on the outside of the cylinder (1); a plurality of guide pillars (5) are provided between the first stopper (3) and the hollow electromagnet (2); the guide pillars (5) are slidably connected to the hollow electromagnet (2); and the elastic component (4) is sleeved on the outside of the guide pillars (5) between the first stopper (3) and the hollow electromagnet (2).

3. A hollow axle docking device according to any one of claims 1-2, characterized in that: The elastic component (4) comprises a spring, one end of the spring is connected to the first stopper (3), and the other end is connected to the hollow electromagnet (2), the first stopper (3) is connected to a displacement adjustment device (6), and the displacement adjustment device (6) is used to adjust the axial distance between the first stopper (3) and the hollow electromagnet (2).

4. A hollow axle docking device according to claim 3, characterized in that: The displacement adjustment device (6) comprises a screw rod (601) arranged axially along the barrel (1); the screw rod (601) passes through the first stopper (3) and is fixed to the second stopper (7) of the barrel (1) via a guide sleeve (602).

5. The hollow axle docking device according to claim 4, characterized in that: The first stopper (3) comprises a stop ring sleeved on the outside of the cylinder (1), and a plurality of guide pillars (5) are evenly distributed on the stop ring.

6. A hollow axle docking device according to any one of claims 4-5, characterized in that: A sliding sleeve (8) is provided on the outside of the cylinder (1), a proximity sensor (9) is provided at the end of the sliding sleeve (8), the sliding sleeve (8) is provided with a waist-shaped hole (801) arranged along the axial direction of the cylinder (1), and an adjusting screw (10) passes through the waist-shaped hole (801) and is connected to the cylinder (1).

7. A flaw detector, characterized in that: include: A visual positioning device, used for acquiring position information of a hollow axle (100) to be tested; A flaw detection device, comprising a flaw detection rod (11), wherein the flaw detection rod (11) is telescopically connected to the cylinder (1) of the hollow axle (100) docking device according to any one of claims 1 to 6; A displacement driving device connected to the flaw detection device and used for driving the flaw detection device to dock with the hollow axle (100) to be tested; The control device is in communication with the visual positioning device, the flaw detection device and the displacement drive device, and controls the displacement drive device to drive the flaw detection device to achieve docking with the axle to be tested according to the position information of the axle to be tested obtained by the visual positioning device.

8. A flaw detector according to claim 7, characterized in that: The end of the flaw detection rod (11) is provided with an arc-shaped guide head (12).

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