Wheel probe test fixture and test platform

Abstract

A wheel probe test fixture is provided, which includes a main body of a rectangular parallelepiped structure, and the main body is provided with a test block groove for accommodating a test block. A wheel probe test platform is also provided, which includes a base, a bracket, a sliding beam, a sliding frame, and a wheel probe fixing device, wherein the base is used to fix the test platform on the ground or other table tops, the bracket is supported on the base, the sliding beam is installed on the upper part of the bracket, the sliding frame is slidably connected to the sliding beam, the wheel probe fixing device is used to fix the wheel probe to be tested on the sliding frame, and the wheel probe test fixture as described above is fixed on the base.

Description

Technical Field

[0001] The invention relates to the field of rail flaw detection, and in particular to a wheel probe testing tool and a testing platform. Background Art

[0002] At present, the domestic railway system mainly uses hand-push rail flaw detectors to carry out damage detection along the track. With the continuous development of my country's rail transportation industry, especially the rapid construction of high-speed railways, the accuracy and speed requirements for track flaw detection are getting higher and higher. The existing hand-push rail flaw detectors can no longer meet the requirements. The ultrasonic wheel flaw detector drives the wheel probe to travel on the rail to detect damage. The driving speed is much higher than that of the hand-push rail flaw detector, which can achieve a faster detection speed and damage detection rate than the hand-push rail flaw detector.

[0003] Regardless of the type of flaw detection equipment, the quality of the probe will directly determine the reliability of rail flaw detection. Existing technical specifications require that the probe can detect different types of damage in different locations in the standard test block, but the existing standard test block is for hand-push rail flaw detectors. The probe of the hand-push rail flaw detector can directly contact the test block for testing, and the testing process can also be completed through manual operation.

[0004] However, to complete the relevant tests, the wheel probe must be installed with multiple probes in a specific posture in a complete wheel probe. In particular, some tests require the wheel probe to move along the test block at a specified speed. The existing standard test block does not match the wheel probe. The wheel probe cannot move on the standard test block in a stable posture, let alone reach the specified speed, which makes the test effect poor and inefficient. Therefore, it is urgent to design a test platform that can effectively test the performance of the wheel probe. Summary of the invention

[0005] In response to one or some of the above-mentioned problems, the present invention provides a wheel probe testing tool and a testing platform. The testing tool allows existing standard test blocks to be used for testing wheel probes, and the testing platform allows comprehensive testing of various performances of the wheel probe.

[0006] In order to solve one or part of the technical problems in the prior art, the present invention provides a wheel probe test fixture, which is characterized by comprising a main body of a rectangular parallelepiped structure, wherein the main body is provided with a test block groove for accommodating a test block.

[0007] According to another aspect of the present invention, the height and width of the main body are consistent with the height and width of the standard rail, and the size and shape of the test block groove match the standard test block.

[0008] According to another aspect of the present invention, the top surface of the main body is consistent with the tread of a standard rail.

[0009] According to another aspect of the present invention, the test block groove is located on the top surface of the main body.

[0010] According to another aspect of the present invention, the depth of the test block groove is equal to or slightly smaller than the height of the standard test block.

[0011] According to another aspect of the present invention, the standard test blocks include CSK-IA test blocks, WGT-3 test blocks and step test blocks.

[0012] According to another aspect of the present invention, the test fixture further includes a coupling medium container.

[0013] According to another aspect of the present invention, the coupling medium container includes a detachable or foldable side panel.

[0014] According to another aspect of the present invention, the coupling medium container preferably comprises an open container.

[0015] According to another aspect of the present invention, a through groove is provided at the bottom of the container, and the main body is embedded in the through groove and protrudes upward from the bottom plate of the container.

[0016] According to another aspect of the present invention, a wheel probe test platform is also provided, characterized in that it includes a base, a bracket, a sliding beam, a sliding frame, a wheel probe fixing device, a standard test block and the aforementioned wheel probe test tooling, the bracket is supported on the base, the sliding beam is connected to the bracket, the sliding frame is slidably connected to the sliding beam, the wheel probe fixing device is used to connect the wheel probe to be tested to the sliding frame, the wheel probe to be tested is in pressure contact with the wheel probe test tooling, and the standard test block is arranged in the test block groove.

[0017] According to another aspect of the present invention, the test platform further comprises a driving device for driving the wheel probe to be tested to move along the longitudinal direction of the test fixture.

[0018] According to another aspect of the present invention, the test platform further comprises a centering device for adjusting the posture of the wheel probe to be tested relative to the test fixture body to achieve centering.

[0019] According to another aspect of the present invention, the test platform further comprises a vertical adjustment device for adjusting the relative position between the wheel probe to be tested and the main body of the test fixture in the vertical direction.

[0020] According to another aspect of the present invention, the test platform further comprises a control device for controlling the test operation, and / or a test device for reading and storing the test data, and / or a display device for displaying the test data and the test results.

[0021] According to another aspect of the present invention, a wheel probe test fixture is provided, which is characterized in that it is a rectangular parallelepiped structure as a whole, and a test block groove for accommodating a test block is provided inside.

[0022] According to another aspect of the present invention, the curvature of the end surface of the test fixture is processed to be consistent with the curvature of the tread of a standard rail.

[0023] According to another aspect of the present invention, the standard test block is a CSK-IA test block, a WGT-3 test block and a step test block.

[0024] According to another aspect of the present invention, there are two or more test block slots for accommodating the same or different standard test blocks.

[0025] According to another aspect of the present invention, the material of the testing tool is acrylic glass or other materials.

[0026] According to another aspect of the present invention, bolt holes for fixing are provided at the bottom of the testing tool.

[0027] According to another aspect of the present invention, a handle or a groove is provided on the side of the test tool for convenient carrying of the test tool.

[0028] According to another aspect of the present invention, the test fixture further includes a coupling medium slot.

[0029] According to another aspect of the present invention, the coupling medium slot further includes a coupling medium discharge port.

[0030] According to another aspect of the present invention, one side of the coupling medium slot further includes a detachable or foldable baffle.

[0031] According to another aspect of the present invention, a sealing groove is provided in the coupling medium groove, into which a sealing device can be placed.

[0032] According to another aspect of the present invention, a wheel probe test platform is also provided, characterized in that it includes a base, a bracket, a sliding beam, a sliding frame, and a wheel probe fixing device, the base is used to fix the test platform on the ground or other table top, the bracket is supported on the base, the sliding beam is installed on the upper part of the bracket, the sliding frame is slidably connected to the sliding beam, the wheel probe fixing device is used to fix the wheel probe to be tested on the sliding frame, and the wheel probe test tooling as described above is fixed on the base.

[0033] According to another aspect of the present invention, the base includes a transverse support rod for fixing the test platform and a longitudinal support rod for installing the test tool.

[0034] According to another aspect of the present invention, the bracket includes a longitudinal bracket and a transverse bracket, the longitudinal bracket is used to support between the base and the transverse bracket, and the transverse bracket is used to fix and install the sliding beam.

[0035] According to another aspect of the present invention, the test platform further comprises a test fixture fixing seat, which is installed on the base and is used for installing the wheel probe test fixture.

[0036] According to another aspect of the present invention, the test platform further comprises a driving device, which cooperates with the sliding beam and the sliding frame to drive the wheel probe to be tested to move along the longitudinal direction of the test fixture.

[0037] According to another aspect of the present invention, the test platform further comprises a centering device, which adjusts the posture of the wheel probe to be tested relative to the test fixture to achieve centering.

[0038] According to another aspect of the present invention, the centering device includes a horizontal adjustment device and a deflection adjustment device.

[0039] According to another aspect of the present invention, the horizontal adjustment device and the deflection adjustment device are motors.

[0040] According to another aspect of the present invention, the centering device operation can be performed before the test begins or during the entire test process.

[0041] According to another aspect of the present invention, a counterweight structure is provided on the sliding frame on the opposite side of the centering device so that the pulley can be balanced.

[0042] According to another aspect of the present invention, the test platform further comprises a coupling medium spraying device.

[0043] According to another aspect of the present invention, the test platform further comprises a vertical adjustment device, which is used to adjust the relative position between the wheel probe to be tested and the test fixture in the vertical direction.

[0044] The present invention can achieve one or more of the following beneficial effects: 1) the existing standard test block can be directly used for the test of the wheel probe; 2) comprehensive automatic / manual testing of various parameters of the wheel probe can be realized, reaching a certain speed, and simulating actual working conditions; 3) the wheel probe without a leather wheel can be tested; 4) rapid switching between the two testing requirements of with and without a leather wheel can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1a A front view of a test fixture suitable for a CSK-IA test block according to the present invention;

[0046] Figure 1b A top view of a test fixture suitable for a CSK-IA test block according to the present invention;

[0047] Figure 1c A side view of a test fixture suitable for a CSK-IA test block according to the present invention;

[0048] Figure 2a A front view of a test fixture suitable for a WGT-3 test block according to the present invention;

[0049] Figure 2b A top view of a test fixture suitable for a WGT-3 test block according to the present invention;

[0050] Figure 2c A side view of a test fixture suitable for a WGT-3 test block according to the present invention;

[0051] Figure 3a A front view of a test fixture suitable for a step test block according to the present invention;

[0052] Figure 3b A top view of a test fixture suitable for a step test block according to the present invention;

[0053] Figure 3c A side view of a test fixture suitable for a step test block according to the present invention;

[0054] Figure 4 is a structural diagram of a test platform according to the present invention;

[0055] Figure 5a A front view of a test fixture with a coupling medium slot suitable for a CSK-IA test block according to the present invention;

[0056] Figure 5b A top view of a test fixture with a coupling medium slot applicable to a CSK-IA test block according to the present invention;

[0057] Figure 5c A side view of a test fixture with a coupling medium slot suitable for a CSK-IA test block according to the present invention;

[0058] Figure 6 It is a structural diagram of a test platform equipped with a test fixture with a coupling medium slot according to the present invention. DETAILED DESCRIPTION

[0059] The best implementation mode of the present invention is described below through preferred embodiments in conjunction with the accompanying drawings. The specific implementation mode here is to illustrate the present invention in detail and should not be understood as limiting the present invention. Various deformations and modifications can be made without departing from the spirit and essential scope of the present invention, which should be included in the protection scope of the present invention.

[0060] Example 1

[0061] like Figure 1a-3cAs shown, the wheel probe test fixture of the present invention comprises a main body 1 of a rectangular parallelepiped structure, a test block slot 2 is provided inside the test fixture main body 1, the size and shape of the test block slot 2 match the standard test block, the height and width of the test fixture main body 1 are consistent with the height and width of the standard rail (for example, a 60kg rail), and the end face curvature of the test fixture main body 1 is processed to be consistent with the curvature of the standard rail tread (the top surface of the test fixture main body 1 is consistent with the standard rail tread), so as to minimize the impact of the test fixture on the wheel probe test and better reflect the performance of the wheel probe itself. The wheel probe is a rail damage ultrasonic wheel probe.

[0062] Preferably, the test block slot 2 is located on the top surface of the main body 1. The standard test block can be placed in the test block slot 2 from above, which is convenient for operation. At the same time, compared with setting the test block slot on other surfaces or positions of the main body 1, by setting the test block slot 2 on the top surface of the main body 1, it is possible to prevent the test tooling (material) from affecting or attenuating the ultrasonic signal (to be incident on the standard test block) emitted by the wheel probe, so that the standard test block and the wheel probe can be in direct contact without interference from the test tooling part / material, thereby avoiding attenuation, refraction, etc. of the ultrasonic signal.

[0063] Preferably, the depth of the test block groove 2 is equal to or slightly less than the height of the standard test block. The standard test block slightly protrudes from the top surface of the main body 1, which can ensure close contact between the wheel probe and the standard test block, improve the accuracy of the test, and extend the service life of the test fixture.

[0064] Preferably, the standard test blocks include CSK-IA test blocks, WGT-3 test blocks and step test blocks.

[0065] See also Figure 1a-3c The test fixtures are CSK-IA test block, WGT-3 test block and step test block fixture. Other test fixtures can also be formed by opening a test block slot 2 matching other standard test blocks in the test fixture body 1. Multiple test block slots 2 can also be opened in the test fixture body 1 to match multiple standard test blocks of the same or different types, so as to perform different tests on the wheel probe at the same time and improve the test efficiency.

[0066] The tooling material can be acrylic glass or other materials. Bolt holes 3 can also be provided at the bottom of the test tooling body 1 to facilitate fixing on the test platform or other positions. Handles or grooves can also be provided on the side of the test tooling body 1 to facilitate carrying the test tooling.

[0067] Preferably, see Figure 6, the test fixture further includes a coupling medium container 17. Preferably, the coupling medium container includes a detachable or foldable side panel (baffle) 18. The coupling medium container 17 preferably includes an open container, the bottom of which is provided with a through slot, the main body 1 is embedded in the through slot and protrudes upward from the bottom plate of the container. However, the present invention is not limited to this. For example, the test fixture main body 1 can also be set in the coupling medium container 17. Obviously, this structure is better than Figure 6 In terms of the structure, Figure 6 The test fixture structure is more conducive to adjusting the test mode (two tests with and without a leather wheel), and is also more conducive to miniaturization.

[0068] Example 2

[0069] See also Figure 4 The present invention also provides a wheel probe test platform, which may include a base, a bracket, a sliding beam 6, a sliding frame 7, a wheel probe fixing device 8, a standard test block and the aforementioned wheel probe test tooling, the bracket is supported on the base, the sliding beam 6 is connected to the bracket, the sliding frame 7 is slidably connected to the sliding beam 6, the wheel probe fixing device is used to connect the wheel probe to be tested to the sliding frame 7, the wheel probe to be tested is in pressure contact with the wheel probe test tooling, and the standard test block is arranged in the test block groove.

[0070] Preferably, the test platform further comprises a driving device for driving the wheel probe to be tested to move along the longitudinal direction of the test fixture.

[0071] Preferably, the test platform further comprises a centering device 9 for adjusting the posture of the wheel probe to be tested relative to the test fixture body 1 to achieve centering.

[0072] Preferably, the test platform further comprises a vertical adjustment device for adjusting the relative position between the wheel probe to be tested and the main body of the test fixture in the vertical direction.

[0073] Preferably, if Figure 4 As shown, the test platform 100 of the present invention may include: a base, a bracket, a sliding beam 6, a sliding frame 7, a wheel probe fixing device 8, a centering device 9, and a test tool fixing seat 10.

[0074] The base includes a transverse support rod 11 and a longitudinal support rod 12 arranged perpendicular to each other. The transverse support rod 11 is used to fix or support the test platform 100 on the ground or the test table, and the longitudinal support rod 12 is used to install the test tool fixing seat 10. Preferably, a plurality of holes are provided on the longitudinal support rod 12 to facilitate fixing the test tool fixing seat 10 at a suitable position of the longitudinal support rod 12 according to test requirements.

[0075] The test fixture fixing seat 10 is used to fix the test fixture so that the longitudinal direction of the test fixture is parallel to the sliding beam 6. The bottom of the test fixture fixing seat 10 is fixed on the base, preferably fixed on the longitudinal support rod 12 of the base, but the present invention is not limited to this. In addition, a suitable fixing position can be selected / adjusted through multiple holes set on the longitudinal support rod 12.

[0076] The bracket includes a longitudinal bracket (vertical bracket) 13 and a transverse bracket 14. The longitudinal bracket 13 is used to support between the base and the transverse bracket 14. The transverse bracket 14 is used to fix the sliding beam 6. A sliding frame 7 is set on the sliding beam 6. The sliding beam 6 and the sliding frame 7 cooperate to enable the wheel probe 15 to be tested to move along the direction of the test tooling.

[0077] A slider matching the sliding beam 6 is arranged on the upper side of the sliding frame 7, and a wheel probe fixing device 8 is arranged on the lower side. The wheel probe fixing device 8 is provided with a probe wheel fixing groove, which matches the connecting frame of the wheel probe 15 to be measured, so that the two can be directly connected, which is convenient for disassembly and assembly. Preferably, the two are connected by plug-in, snap-on connection or bolt connection.

[0078] The test platform 100 may also include a driving device, which cooperates with the sliding beam 6 and the sliding frame 7 to drive the wheel probe 15 to be tested to move; the sliding beam 6 may be provided with a guide rail and a slider, the sliding frame 7 is connected to the guide rail through the slider, and the driving device may be a driving device such as a motor, which drives the slider to move along the guide rail to drive the sliding frame 7 to move; the sliding beam 6 may also be provided with a lead screw, a guide rail and a slider, the sliding frame 7 is connected to the slider, and the lead screw is driven by the driving device to drive the slider to move along the guide rail to drive the sliding frame 7 to move along the length direction of the test fixture. In order to make the sliding frame 7 move more stably, two / multiple sliders may be provided along the moving direction of the sliding frame 7, and a slideway parallel to the guide rail may be provided beside the guide rail, and the sliding frame 7 is simultaneously connected to the slideway and the guide rail through the slider. The driving device may set the movement mode (such as speed change) and speed of the sliding frame 7 to test the performance of the wheel probe 15 to be tested under different movement modes and speeds. The test platform 100 may also not be provided with a driving device, and the sliding frame 7 may only be moved along the sliding beam 6 by manual operation, so as to operate the wheel probe 15 to be tested more flexibly.

[0079] The sliding frame 7 is also provided with a centering device 9, which can adjust the horizontal and offset posture of the wheel probe 15 to be tested relative to the test fixture to achieve centering; preferably, the adjustment of two degrees of freedom is achieved by a horizontal adjustment device and a deflection adjustment device fixed on the sliding frame 7; preferably, the horizontal adjustment device and the deflection adjustment device are a horizontal adjustment motor and a deflection adjustment motor; the centering operation can be performed according to the echo of the probe; the centering operation can be performed only before the test starts, or it can be adjusted in real time during the entire test process. Preferably, a counterweight structure 19 is provided on the opposite side of the centering device 9 on the sliding frame 7 so that the wheel probe 15 can be balanced.

[0080] The sliding frame 7 may also include a coupling medium spraying device to spray the coupling medium on the contact surface between the wheel probe 15 to be tested and the test fixture during the test process.

[0081] The test platform 100 further includes a vertical adjustment device for adjusting the relative position between the wheel probe 15 to be tested and the test fixture body 1 in the vertical direction, for example, before testing, the wheel probe 15 to be tested is pressed tightly against the test fixture body 1 .

[0082] Preferably, the test platform 100 may further include a control device for controlling the operation of the driving device, the centering device 9 and the coupling medium spraying device.

[0083] Preferably, the test platform 100 may further include a test device for reading various test data of the wheel probe 15 to be tested and comparing the difference between the test data and the standard data, and may further include a display device for displaying the test results in real time.

[0084] Example 3

[0085] like Figure 5a-5c and Figure 6 As shown, the test fixture of the present invention may also include a coupling medium slot (coupling medium container) 17 connected thereto, into which a coupling medium is injected to provide coupling between the wheel probe 15 to be tested and the test fixture body 1, and is used to test various properties of the wheel probe without a leather wheel. For example, in the research and development stage, in order to obtain a better flaw detection effect, it is necessary to adjust the relative position, angle and combination of each probe installed in the wheel probe. This fixture can be used to test only the probe combination, so that each probe can be adjusted at any time. Preferably, the coupling medium slot 17 may also include a coupling medium discharge port. The coupling medium container 17 is preferably an open container, and a through groove, such as a rectangular through groove, is provided at the bottom thereof to sealably embed the test fixture body 1. The body 1 preferably protrudes upward from the bottom / bottom plate of the container 17. For example, the body 1 preferably protrudes upward from the bottom plate of the container 17 by a predetermined distance, which facilitates the free movement of the wheel probe to be tested on the body 1.

[0086] Example 4

[0087] like Figure 5a-5c and Figure 6 As shown, one side of the coupling medium slot 17 of the test fixture of the present invention may also include a detachable / foldable baffle 18, which can be used to conveniently switch between tests with and without a pulley. When testing with a pulley, the baffle is removed / folded, and the wheel probe 15 to be tested can enter the test fixture from the side of the removed / folded baffle 18, and the test is completed without a coupling medium. After the pulley is removed from the wheel probe 15 to be tested, the baffle 18 is installed / folded to accommodate the coupling medium, and the coupling medium is injected to perform the test without a pulley. Typically, this fixture can be used to test the sound attenuation of a pulley, and the sound attenuation of the pulley as a protective film can be compared through the tests with and without the pulley. Preferably, a sealing groove is provided in the coupling medium slot 17 on one side of the baffle, and a sealing device, such as a sealing ring, can be placed to ensure that the coupling medium does not flow out. Preferably, the coupling medium slot 17 may also include a coupling medium discharge port.

[0088] Preferably, the wheel probe test platform may further include a leather wheel sound attenuation test unit, which is used to determine the leather wheel sound attenuation according to the reflected sound waves received by the wheel probe with the leather wheel during the test and the reflected sound waves received by the wheel probe with the leather wheel removed when there is a coupling medium in the coupling medium container. It can be understood that the reflected sound waves are obtained by reflecting the emitted sound waves of the wheel probe via the standard test block.

[0089] Compared with the prior art, the present invention has one or more of the following effects:

[0090] 1) The existing standard test blocks can be directly used for testing wheel probes; 2) Comprehensive automatic / manual testing of various parameters of wheel probes can be achieved at a certain speed to simulate actual working conditions; 3) Wheel probes without leather wheels can be tested; 4) Quick switching between testing requirements with and without leather wheels can be achieved.

[0091] 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 wheel probe test platform with switchable test modes, wherein the test modes are two test modes: with a leather wheel and without a leather wheel, characterized in that: It includes a base, a bracket, a sliding beam, a sliding frame, a wheel probe fixing device, a standard test block and a wheel probe test fixture; The wheel probe test fixture comprises a main body of a rectangular parallelepiped structure, wherein a test block slot for accommodating a test block is arranged inside the main body; the test fixture also comprises a coupling medium container; the coupling medium container comprises an opening and a through slot is arranged at the bottom, the main body is embedded in the through slot and protrudes upward from the bottom plate of the coupling medium container, the coupling medium container comprises a detachable or foldable side panel for conveniently switching between tests with or without a leather wheel, when testing with a leather wheel, the side panel is removed or folded, the wheel probe to be tested enters the test fixture from the side of the removed or folded side panel, and the test is completed without a coupling medium; the side panel is installed and the coupling medium is injected, so that the test without a leather wheel can be carried out; the sound attenuation of the leather wheel as a protective film is compared through the tests with and without the leather wheel; the coupling medium container also comprises a coupling medium discharge port; The bracket is supported on the base, the sliding beam is connected to the bracket and is located above the wheel probe test fixture, the sliding frame is slidably connected to the sliding beam and can move along the sliding beam with the wheel probe to be tested, the wheel probe fixing device is used to connect the wheel probe to be tested to the sliding frame, the wheel probe to be tested is in pressure contact with the wheel probe test fixture, and the standard test block is set in the test block groove; The wheel probe test platform also includes a leather wheel sound attenuation test unit, which is used to determine the leather wheel sound attenuation according to the reflected sound waves received by the wheel probe with the leather wheel during the test and the reflected sound waves received by the wheel probe with the leather wheel removed when there is a coupling medium in the coupling medium container; The test platform also includes a driving device for driving the wheel probe to be tested to move along the longitudinal direction of the test fixture; The test platform also includes a vertical adjustment device, which is used to adjust the relative position between the wheel probe to be tested and the main body of the test fixture in the vertical direction; The test platform also includes a centering device for adjusting the horizontal and offset posture of the wheel probe to be tested relative to the test tooling body to achieve centering. The adjustment of two degrees of freedom is achieved through a horizontal adjustment device and a deflection adjustment device fixed on the sliding frame. The horizontal adjustment device and the deflection adjustment device are a horizontal adjustment motor and a deflection adjustment motor, which can perform a centering operation according to the echo of the probe. The centering operation is adjusted in real time during the entire test process.

2. The test platform according to claim 1, characterized in that: The height and width of the main body are consistent with those of the standard rail, and the size and shape of the test block groove match those of the standard test block.

3. The test platform according to claim 1, characterized in that: The top surface of the main body is consistent with the tread of the standard rail; the test block groove is located on the top surface of the main body; the depth of the test block groove is equal to or slightly less than the height of the standard test block.

4. The test platform according to claim 3, characterized in that: The standard test blocks include CSK-IA test blocks, WGT-3 test blocks and step test blocks.

5. The test platform according to claim 1, characterized in that: The test platform also includes a control device for controlling the test operation, and / or a test device for reading and storing the test data, and / or a display device for displaying the test data and the test results.

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