Mobile ultrasonic wheel detector calibration platform

Abstract

The utility model discloses a movable ultrasonic wheel detector calibration platform which comprises a vertical mechanism, a transverse mechanism and a longitudinal mechanism. Wherein the vertical mechanism comprises a vertical lead screw, a vertical lead screw nut, a detection wheel mounting frame and a detection wheel mounting plate, the transverse mechanism comprises a transverse lead screw and a transverse lead screw nut, and the longitudinal mechanism comprises a longitudinal lead screw and a longitudinal lead screw nut. The vertical lead screw is rotated, and the vertical lead screw nut drives the detection wheel mounting frame and the detection wheel mounting plate to move in the vertical direction. The transverse lead screw is rotated, and the transverse lead screw nut drives the vertical mechanism to move in the transverse direction. The longitudinal lead screw is rotated, and the longitudinal lead screw nut drives the vertical mechanism and the transverse mechanism to move in the longitudinal direction. According to the movable ultrasonic detection wheel calibration platform provided by the utility model, the relative positions of the ultrasonic detection wheel to be calibrated and the calibration rail are changed by utilizing the vertical, transverse and longitudinal moving pairs, and the three moving pairs are arranged on the movable rack, so that the detection wheel calibration platform and the detection wheel arranged on the detection wheel calibration platform can move together.

Description

Technical Field

[0001] The utility model relates to a mobile ultrasonic wheel detection calibration platform, belonging to the technical field of railway flaw detection. Background Art

[0002] Ultrasonic sensors are installed inside the ultrasonic wheel probe. As the flaw detection vehicle moves on the track, the ultrasonic sensors installed in the ultrasonic wheel probe convert electrical pulses into ultrasonic waves. The ultrasonic waves emitted from each group of ultrasonic sensors are refracted after passing through the medium into the track. The ultrasonic waves are refracted at a predetermined angle to detect damage to the predetermined part of the rail. Before using the ultrasonic wheel probe, its probe performance needs to be calibrated to ensure the accuracy of the ultrasonic detection operation.

[0003] In a Chinese patent application with application number 202011355607.3, an ultrasonic probe wheel calibration system and method are disclosed. The probe wheel calibration system includes: a base; a mounting frame arranged on the base; a probe wheel mounting portion arranged on the mounting frame for fixing the probe wheel; a bearing portion arranged on the base; the probe wheel can change its relative position relative to the bearing portion in three directions perpendicular to each other; a liquid storage tank arranged on the bearing portion; a calibration test block arranged in the liquid storage tank, which is used to test the performance of the probe wheel; a sheet wheel membrane arranged on the top of the calibration test block, the sheet wheel membrane is used to simulate the amplitude attenuation generated when the ultrasonic wave passes through the wheel membrane of the probe wheel, and the upper surface of the probe wheel liquid submerges the sheet wheel membrane; a probe wheel mounted on the probe wheel mounting portion. However, the probe wheel calibration system uses one probe wheel to calibrate multiple probes of the same type, and it takes a lot of time to replace the probes before each calibration.

[0004] Similarly, the prior art is to change the relative position of the calibration rail and the probe wheel by placing the calibration rail on the calibration rack and changing the horizontal position of the calibration rail. Practice has proved that the calibration rail is heavy and difficult to carry, and the probe wheel has a small installation space on the calibration rack and is difficult to install and disassemble. Summary of the invention

[0005] The technical problem to be solved by the utility model is to provide a mobile ultrasonic wheel probe calibration platform.

[0006] In order to achieve the above technical objectives, the utility model adopts the following technical solutions:

[0007] According to an embodiment of the utility model, a mobile ultrasonic wheel calibration platform is provided, comprising a vertical mechanism, a horizontal mechanism and a longitudinal mechanism; wherein:

[0008] The vertical mechanism includes a vertical lead screw, a vertical lead screw nut, a probe wheel mounting frame, a probe wheel mounting plate and a vertical frame; the transverse mechanism includes a transverse lead screw, a transverse lead screw nut and a transverse frame; the longitudinal mechanism includes a longitudinal lead screw, a longitudinal lead screw nut and a longitudinal frame;

[0009] The vertical frame is provided with the vertical lead screw, the vertical lead screw nut is nested on the vertical lead screw, and the vertical lead screw nut can move along the vertical lead screw; one end of the probe wheel mounting frame is connected to the vertical lead screw nut, and the other end is connected to the probe wheel mounting plate; the probe wheel mounting plate is provided with a guide rail for connecting the probe wheel;

[0010] The transverse lead screw is arranged on the transverse frame, the transverse lead screw nut is nested on the transverse lead screw, and the transverse lead screw nut can move along the transverse lead screw; the transverse lead screw nut is in contact with and connected to the vertical frame;

[0011] The longitudinal screw is arranged on the longitudinal frame, the longitudinal screw nut is nested on the longitudinal screw, and the longitudinal screw nut can move along the longitudinal screw; the longitudinal screw nut is in contact with and connected to the transverse frame;

[0012] Rotate the vertical lead screw, and the vertical lead screw nut drives the probe wheel mounting frame and the probe wheel mounting plate to move vertically; rotate the transverse lead screw, and the transverse lead screw nut drives the vertical frame to move transversely; rotate the longitudinal lead screw, and the longitudinal lead screw nut drives the vertical mechanism and the transverse mechanism to move longitudinally.

[0013] Preferably, the vertical mechanism further comprises a vertical slide rail and a vertical slider; wherein,

[0014] The vertical slide rail is arranged on the vertical frame and is parallel to the vertical lead screw; the vertical slider is arranged on the vertical slide rail, and the vertical slider can move along the vertical slide rail and will not be separated from the vertical slide rail;

[0015] The vertical sliding block is in contact with and connected to the wheel detection mounting frame.

[0016] Preferably, the vertical mechanism further comprises a vertical hand wheel; wherein,

[0017] The vertical hand wheel is arranged at one end of the vertical lead screw, and rotating the vertical hand wheel can rotate the vertical lead screw.

[0018] Preferably, the transverse mechanism further comprises a transverse slide rail and a transverse slider; wherein,

[0019] The transverse slide rail is arranged on the transverse frame and is parallel to the transverse lead screw; the transverse slider is arranged on the transverse slide rail, and the transverse slider can move along the transverse slide rail and will not be separated from the transverse slide rail;

[0020] The transverse sliding block is in contact with and connected to the vertical frame.

[0021] Preferably, the transverse mechanism further comprises a transverse hand wheel; wherein,

[0022] The transverse hand wheel is arranged at one end of the transverse screw, and the transverse screw can be rotated by rotating the transverse hand wheel.

[0023] Preferably, the longitudinal mechanism further comprises a longitudinal slide rail and a longitudinal slider; wherein,

[0024] The longitudinal slide rail is arranged on the longitudinal frame and is parallel to the longitudinal lead screw; the longitudinal slider is arranged on the longitudinal slide rail, and the longitudinal slider can move along the longitudinal slide rail and will not be separated from the longitudinal slide rail;

[0025] The longitudinal slider is in contact with and connected to the transverse frame.

[0026] Preferably, the longitudinal mechanism further comprises a longitudinal hand wheel; wherein,

[0027] The longitudinal hand wheel is arranged at one end of the longitudinal screw, and the longitudinal screw can be rotated by rotating the longitudinal hand wheel.

[0028] Preferably, the longitudinal mechanism further comprises casters; wherein,

[0029] The casters are arranged at the bottom of the longitudinal frame to move and support the longitudinal frame on the ground.

[0030] Compared with the existing technology, the mobile ultrasonic probe wheel calibration platform utilizes vertical, transverse and longitudinal moving pairs to change the relative position of the ultrasonic probe wheel to be calibrated and the calibration rail. The three moving pairs are installed on a movable frame, which can move the probe wheel calibration platform and the probe wheel installed thereon together, solving technical problems such as difficulty in movement, inaccurate positioning and low efficiency in replacing probe wheels during probe wheel calibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a structural schematic diagram of a mobile ultrasonic wheel calibration platform in an embodiment of the utility model;

[0032] Figure 2(a) shows Figure 1 Structural diagram of the vertical mechanism in FIG.

[0033] FIG2( b ) is a schematic diagram of the vertical mechanism in FIG2( a ) in the direction A;

[0034] FIG2(c) is a schematic cross-sectional view of the vertical mechanism in FIG2(b) along the AA direction;

[0035] Figure 3(a) shows Figure 1 A schematic diagram of the structure of the lateral mechanism in FIG.

[0036] FIG3( b ) is a schematic diagram of the lateral mechanism in FIG3( a ) in the direction B;

[0037] FIG3( c ) is a schematic left view of the lateral mechanism in FIG3( b );

[0038] Figure 4 for Figure 1 Schematic diagram of the structure of the longitudinal mechanism. DETAILED DESCRIPTION

[0039] The technical content of the present utility model is described in detail below with reference to the accompanying drawings and specific embodiments.

[0040] The technical concept in the embodiment of the utility model is to use vertical, horizontal and longitudinal moving pairs to change the relative position of the ultrasonic probe wheel to be calibrated (hereinafter referred to as "probe wheel") and the calibration rail. The three moving pairs are installed on a movable frame, which can move the probe wheel calibration platform and the probe wheel installed thereon together. When calibrating the probe wheel, the probe wheel needs to be set on the calibration rail for detection. Relative to the calibration rail, the longitudinal, horizontal and vertical positions of the probe wheel all affect the detection results of the probe wheel.

[0041] It should be noted that the "vertical" in the embodiments of the present invention refers to the vertical direction perpendicular to the axis of the calibration rail when the calibration rail is laid flat, the "transverse" refers to the horizontal direction parallel to the axis of the calibration rail, and the "longitudinal" refers to the horizontal direction perpendicular to the axis of the calibration rail.

[0042] like Figure 1 As shown, a mobile ultrasonic wheel probe calibration platform 100 provided by an embodiment of the utility model includes a vertical mechanism 1, a transverse mechanism 2 and a longitudinal mechanism 3. The probe wheel 200 is fixed on the vertical mechanism 1, and the probe wheel 200 is moved in three directions by the vertical mechanism 1, the transverse mechanism 2 and the longitudinal mechanism 3 to adjust the relative position of the probe wheel 200 and the calibration rail 300. The mobile ultrasonic wheel probe calibration platform 100 and the probe wheel 200 can move as a whole to approach or move away from the calibration rail 300.

[0043] like Figure 2(a) to Figure 2(c) As shown, the vertical mechanism 1 includes a vertical lead screw 11, a vertical lead screw nut 12, a probe wheel mounting frame 13, a probe wheel mounting plate 14, a vertical slide rail 15, a vertical slider 16, a vertical frame 17 and a vertical handwheel 18.

[0044] A vertical lead screw 11 and a vertical slide rail 15 are provided on the vertical frame 17, and the two are parallel to each other. A vertical lead screw nut 12 is provided on the vertical lead screw 11, and the vertical lead screw nut 12 is nested on the circumference of the vertical lead screw 11. The vertical lead screw nut 12 can move along the vertical lead screw 11 to form a vertical moving pair. A vertical hand wheel 18 is provided at one end of the vertical lead screw 11, and rotating the vertical hand wheel 18 can rotate the vertical lead screw 11. A vertical slider 16 is provided on the vertical slide rail 15, and the vertical slider 16 can move along the vertical slide rail 15 and will not be separated from the vertical slide rail 15.

[0045] The wheel probe mounting plate 14 is a metal plate provided with a guide rail (such as a dovetail groove) for connecting the wheel probe 200 .

[0046] The wheel-detecting mounting frame 13 includes a first mounting plate 131 and a second mounting plate 132, which are perpendicular to and connected to each other. The first mounting plate 131 is in contact with and connected to the vertical lead screw nut 12 and the vertical slider 16, and the second mounting plate 132 is in contact with and connected to the wheel-detecting mounting plate 14.

[0047] like Figure 3(a) to Figure 3(c) As shown, the transverse mechanism 2 includes a transverse lead screw 21 , a transverse lead screw nut 22 , a transverse slider 23 , a transverse slide rail 24 , a transverse hand wheel 25 and a transverse frame 26 .

[0048] A transverse screw 21 and a transverse slide rail 24 are provided on the transverse frame 26, and the two are parallel to each other. A transverse screw nut 22 is provided on the transverse screw 21, and the transverse screw nut 22 is nested on the circumference of the transverse screw 21. The transverse screw nut 22 can move along the transverse screw 21 to form a transverse moving pair. A transverse hand wheel 25 is provided at one end of the transverse screw 21, and the transverse screw 21 can be rotated by rotating the transverse hand wheel 25. A transverse slider 23 is provided on the transverse slide rail 24, and the transverse slider 23 can move along the transverse slide rail 24 and will not be separated from the transverse slide rail 24.

[0049] like Figure 4 As shown, the longitudinal mechanism 3 includes a longitudinal slider 31 , a longitudinal slide rail 32 , a longitudinal lead screw 33 , a longitudinal lead screw nut 34 , a longitudinal hand wheel 35 , a caster 36 and a longitudinal frame 37 .

[0050] A longitudinal screw 33 and a longitudinal slide rail 32 are provided on the longitudinal frame 37, and the two are parallel to each other. A longitudinal screw nut 34 is provided on the longitudinal screw 33, and the longitudinal screw nut 34 is nested on the circumference of the longitudinal screw 33. The longitudinal screw nut 34 can move along the longitudinal screw 33 to form a longitudinal moving pair. A longitudinal hand wheel 35 is provided at one end of the longitudinal screw 33, and the longitudinal screw 33 can be rotated by rotating the longitudinal hand wheel 35. A longitudinal slider 31 is provided on the longitudinal slide rail 32, and the longitudinal slider 31 can move along the longitudinal slide rail 32 and will not be separated from the longitudinal slide rail 32.

[0051] Casters 36 (such as Forma casters) are provided at the bottom of the longitudinal frame 37, and the casters 36 can move the longitudinal frame 37 on the ground, or fix the longitudinal frame 37 on the ground.

[0052] like Figure 1 As shown, the longitudinal slider 31 and the longitudinal lead screw nut 34 are in contact with and connected to the transverse frame 26, the transverse slider 23 and the transverse lead screw nut 22 are in contact with and connected to the vertical frame 17, and the probe wheel mounting plate 14 is used to install the probe wheel 200. The longitudinal slide rail 32 and the longitudinal lead screw 31 are arranged longitudinally, the transverse slide rail 24 and the transverse lead screw 21 are arranged transversely, and the vertical slide rail 15 and the vertical lead screw 11 are arranged vertically.

[0053] The longitudinal frame 37 is moved or fixedly supported on the ground by casters 36 , the longitudinal slider 31 and the longitudinal slide rail 32 support the transverse mechanism 2 , and the transverse slider 23 and the transverse slide rail 24 support the vertical mechanism 1 .

[0054] The calibration rail 300 is placed flat on the ground or on a support stand, and the mobile ultrasonic probe wheel calibration platform 100 provided by the embodiment of the utility model and the probe wheel 200 installed thereon are moved as a whole to a position close to the calibration rail 300. The longitudinal hand wheel 35 is turned, the longitudinal lead screw 33 rotates, and the transverse mechanism 2, the vertical mechanism 1 and the probe wheel 200 are driven to move longitudinally through the longitudinal lead screw nut 34, thereby changing the relative position of the probe wheel 200 and the calibration rail 300 in the longitudinal direction. The transverse hand wheel 25 is turned, the transverse lead screw 21 rotates, and the vertical mechanism 1 and the probe wheel 200 are driven to move transversely through the transverse lead screw nut 22, thereby changing the relative position of the probe wheel 200 and the calibration rail 300 in the transverse direction. The vertical hand wheel 18 is turned, the vertical lead screw 11 rotates, and the probe wheel mounting frame 13 and the probe wheel 200 are driven to move vertically through the vertical lead screw nut 12, thereby changing the relative position of the probe wheel 200 and the calibration rail 300 in the vertical direction. The vertical, horizontal and longitudinal movement and positioning accuracy of the wheel detection mounting frame 13 can reach no more than one millimeter. The relative position of the wheel detection 200 and the calibration rail 300 is adjusted by the above method to perform wheel detection calibration.

[0055] It should be noted that the vertical wheel detection mounting frame 13 is in contact with and connected to the vertical lead screw nut 12, and the rotation angle of the vertical lead screw 11 satisfies the self-locking condition. In other words, when no rotation torque is applied to the vertical lead screw 11, the vertical lead screw nut 12, the vertical wheel detection mounting frame 13 and the wheel detection 200 will not move downward due to gravity. Among them, the weight of the wheel detection 200 is generally 10 kg.

[0056] Therefore, the mobile ultrasonic wheel probe calibration platform 100 provided by the embodiment of the utility model has the following advantages: ① Because the connection and disassembly of the probe wheel 200 and the mobile ultrasonic wheel probe calibration platform 100 can be carried out in a place far away from the calibration rail 300, the probe wheel 200 has a wide installation and disassembly space to facilitate the operation; ② There is no need to move the calibration rail 300, which reduces the workload of the calibration work of the probe wheel 200; ③ When a mobile ultrasonic wheel probe calibration platform 100, a probe wheel 200 and a calibration rail 300 are being calibrated, the installation and disassembly of multiple other mobile ultrasonic wheel probe calibration platforms 100 and probe wheels 200 can be carried out at the same time, so the calibration work and the assembly and disassembly of other probe wheels 200 are carried out at the same time. In other words, one calibration rail 300 can calibrate multiple probe wheels 200 continuously, saving the demand for the calibration rail 300, saving the transportation and installation time of the calibration rail 300, and improving the calibration efficiency.

[0057] In summary, the mobile ultrasonic wheel probe calibration platform 100 provided by the embodiment of the utility model can achieve a moving and positioning accuracy of one millimeter by moving the wheel probe 200 vertically, horizontally and longitudinally and adjusting the relative position of the wheel probe 200 and the calibration rail 300. And the mobile ultrasonic wheel probe calibration platform 100 and the wheel probe 200 can be moved as a whole to move them closer to or away from the calibration rail 300. The workload of moving and installing the calibration rail 300 is saved, and other wheel probes 200 can be disassembled and assembled while the calibration operation is being carried out, providing a spacious operating space for the disassembly and assembly of the wheel probe 200.

[0058] It should be noted that the orientation or position relationship indicated by terms such as "thickness", "depth", "up", "down", "horizontal", "vertical", "top" and "bottom" are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0059] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0060] The above is a detailed description of a mobile ultrasonic wheel calibration platform provided by the utility model. For those skilled in the art, any obvious changes made to the utility model without departing from the essence of the utility model will constitute an infringement of the patent right of the utility model and will bear corresponding legal responsibilities.

Claims

1. A mobile ultrasonic wheel calibration platform, characterized in that It includes vertical mechanism, horizontal mechanism and longitudinal mechanism; among which, The vertical mechanism includes a vertical lead screw, a vertical lead screw nut, a probe wheel mounting frame, a probe wheel mounting plate and a vertical frame; the vertical frame is provided with the vertical lead screw, the vertical lead screw nut is nested on the vertical lead screw, and the vertical lead screw nut can move along the vertical lead screw; one end of the probe wheel mounting frame is connected to the vertical lead screw nut, and the other end is connected to the probe wheel mounting plate; the probe wheel mounting plate is provided with a guide rail for connecting the probe wheel; The transverse mechanism comprises a transverse screw, a transverse screw nut and a transverse frame; the transverse screw is arranged on the transverse frame, the transverse screw nut is nested on the transverse screw, and the transverse screw nut can move along the transverse screw; the transverse screw nut is in contact with and connected to the vertical frame; The longitudinal mechanism includes a longitudinal screw, a longitudinal screw nut and a longitudinal frame; the longitudinal screw is arranged on the longitudinal frame, the longitudinal screw nut is nested on the longitudinal screw, and the longitudinal screw nut can move along the longitudinal screw; the longitudinal screw nut is in contact with and connected to the transverse frame.

2. The mobile ultrasonic wheel detection calibration platform as claimed in claim 1, characterized in that The vertical mechanism also includes a vertical slide rail and a vertical slider; wherein, The vertical slide rail is arranged on the vertical frame and is parallel to the vertical lead screw; the vertical slider is arranged on the vertical slide rail, and the vertical slider can move along the vertical slide rail and will not be separated from the vertical slide rail; The vertical sliding block is in contact with and connected to the wheel detection mounting frame.

3. The mobile ultrasonic wheel calibration platform as claimed in claim 2 is characterized in that The vertical mechanism also includes a vertical hand wheel; wherein, The vertical hand wheel is arranged at one end of the vertical lead screw, and the vertical lead screw can be rotated by rotating the vertical hand wheel.

4. The mobile ultrasonic wheel calibration platform according to claim 1, characterized in that The transverse mechanism also includes a transverse slide rail and a transverse slider; wherein, The transverse slide rail is arranged on the transverse frame and is parallel to the transverse lead screw; the transverse slider is arranged on the transverse slide rail, and the transverse slider can move along the transverse slide rail and will not be separated from the transverse slide rail; The transverse sliding block is in contact with and connected to the vertical frame.

5. The mobile ultrasonic wheel calibration platform as claimed in claim 4, characterized in that The transverse mechanism also includes a transverse hand wheel; wherein, The transverse hand wheel is arranged at one end of the transverse screw, and the transverse screw can be rotated by rotating the transverse hand wheel.

6. The mobile ultrasonic wheel calibration platform according to claim 1, characterized in that The longitudinal mechanism also includes a longitudinal slide rail and a longitudinal slider; wherein, The longitudinal slide rail is arranged on the longitudinal frame and is parallel to the longitudinal lead screw; the longitudinal slider is arranged on the longitudinal slide rail, and the longitudinal slider can move along the longitudinal slide rail and will not be separated from the longitudinal slide rail; The longitudinal slider is in contact with and connected to the transverse frame.

7. The mobile ultrasonic wheel calibration platform as claimed in claim 6, characterized in that The longitudinal mechanism also includes a longitudinal hand wheel; wherein, The longitudinal hand wheel is arranged at one end of the longitudinal screw, and the longitudinal screw can be rotated by rotating the longitudinal hand wheel.

8. The mobile ultrasonic wheel detection calibration platform as claimed in claim 1, characterized in that The longitudinal mechanism also includes casters; wherein, The casters are arranged at the bottom of the longitudinal frame to move and support the longitudinal frame on the ground.

9. The mobile ultrasonic wheel calibration platform according to any one of claims 1 to 8, characterized in that: By rotating the vertical lead screw, the vertical lead screw nut drives the wheel detection mounting frame and the wheel detection mounting plate to move vertically; By rotating the transverse screw, the transverse screw nut drives the vertical mechanism to move in the transverse direction; By rotating the longitudinal lead screw, the longitudinal lead screw nut drives the vertical mechanism and the transverse mechanism to move in the longitudinal direction.

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