CN115973220A - Automatic centering device for flaw detection wheel of rail flaw detector and rail flaw detection vehicle - Google Patents
Automatic centering device for flaw detection wheel of rail flaw detector and rail flaw detection vehicle Download PDFInfo
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Abstract
The invention relates to the technical field of rail flaw detection, in particular to an automatic centering device for a flaw detection wheel of a rail flaw detector and a rail flaw detection vehicle. The automatic centering device for the flaw detection wheel of the rail flaw detector comprises a carrier, a movable sliding seat and a detection wheel, wherein the movable sliding seat is assembled at the lower end of the carrier in a sliding mode, the detection wheel is provided with a wheel carrier, the wheel carrier is rotatably assembled at the lower end of the movable sliding seat through a rotating shaft, the detection wheel is used for being vertically contacted with a tread of a rail to detect the damage of the rail, the movable sliding seat is connected with an adaptive translation centering assembly, the adaptive translation centering assembly is used for driving the detection wheel to translate and return after the detection wheel is translated and deviated relative to two sides of the rail, the rotating shaft is connected with an adaptive deflection centering assembly, and the adaptive deflection centering assembly is used for driving the detection wheel to swing and return after the detection wheel swings and deviates relative to two sides of the rail. The advantages are that: the probe wheel can be adjusted to be aligned with the tread of the track in a self-adaptive manner according to the angle change and the displacement change of the track and the probe wheel, and the effectiveness and the accuracy of the flaw detection of the probe wheel are ensured.
Description
Technical Field
The invention relates to the technical field of rail flaw detection, in particular to an automatic centering device for a flaw detection wheel of a rail flaw detector and a rail flaw detection vehicle.
Background
The rail flaw detector is used for detecting various defects of a rail head, a rail web and a rail bottom of a steel rail, the flaw detector mainly detects flaws through a probe wheel and an internal ultrasonic probe of the probe wheel, the probe wheel is required to be constantly centered with the steel rail left and right in the flaw detection process, the angle of the probe wheel is perpendicular to the steel rail, namely the probe wheel is required to be continuously adjusted in the flaw detection process, and the probe wheel is continuously centered.
The existing centering mechanism of the flaw detector has only the following two realization modes:
firstly, a guide mechanism is driven to be in contact friction with the inner side of a steel rail (mechanically) through an elastic device, a probe inside a detection wheel is combined to reflect signals to the bottom of the rail based on the position relation between the inner side of the steel rail and the middle of the steel rail, manual judgment is carried out, a motor lead screw mechanism is driven, the detection wheel is pushed to transversely move, and left and right centering of the detection wheel on the steel rail is realized; the angle centering of spy wheel, be close with the sideslip, through the inside probe ripples feedback of spy wheel, artifical judgement, driving motor screw mechanism promotes and surveys the change of wheel angle. The probe wheel is angularly centered.
The second, (electromechanical type) through on-vehicle optical sensor range finding, learn probe wheel and rail position relation and difference distance, then automatic operation, driving motor or electric putter promote the probe wheel sideslip and realize the centering about probe wheel and rail, the angle centering is through probe head biological wave feedback inside the probe wheel, artifical manual drive angle screw mechanism, makes probe wheel angle centering.
In the first type (mechanical type), when the probe wheel is centered left and right, the guide mechanism is in contact with the steel rail, noise and abrasion are generated, the self abrasion of the steel rail cannot be self-adapted, and the adjustment is required frequently. The angular centering is typically adjusted manually at shutdown. The second type (electromechanical type) has the disadvantages that the sensor detects that data processing is completed until the driving motor realizes left-right centering, the photoelectric sensor is greatly influenced by the external illumination intensity, the precision is poor under strong light, and the requirements on software and electromechanical hardware are high.
Therefore, it is necessary to develop a new centering method.
Disclosure of Invention
The invention aims to solve the technical problem of providing an automatic centering device for flaw detection wheels of a rail flaw detector and a rail flaw detection vehicle, and effectively overcoming the defects of the prior art.
The technical scheme for solving the technical problems is as follows:
the automatic centering device comprises a carrier, a movable sliding seat and a detection wheel, wherein the movable sliding seat is assembled at the lower end of the carrier in a sliding mode, the detection wheel is provided with a wheel carrier, the wheel carrier is assembled at the lower end of the movable sliding seat in a rotatable mode through a rotating shaft, the detection wheel is used for being in vertical contact with a tread of a track to detect damage of the track, the movable sliding seat is connected with an adaptive translation centering assembly, the adaptive translation centering assembly is used for driving the detection wheel to translate and return after the detection wheel is translated and deviated relative to two sides of the track so as to enable the detection wheel to be in vertical contact with the middle of the tread of the track, the rotating shaft is connected with an adaptive deflection centering assembly, and the adaptive deflection centering assembly is used for driving the detection wheel to swing and return after the detection wheel swings and deviates relative to two sides of the track so as to enable the detection wheel to be in vertical contact with the middle of the tread of the track.
On the basis of the technical scheme, the invention can be improved as follows.
Further, the adaptive translational centering assembly comprises a first translational magnetic force piece, the first translational magnetic force piece is assembled at the lower end of the movable sliding seat through a first support, and the first translational magnetic force piece is a permanent magnet or an electromagnet.
Further, the adaptive translational centering assembly comprises a second translational magnetic member, a first displacement sensor, a second displacement sensor and an electric control linear driving device, the second translational magnetic member is slidably assembled at the lower end of the carrier through a second support and can translate relative to two sides of the track, the first displacement sensor is installed at the lower end of the carrier and is used for monitoring the translational displacement of the second support relative to the two sides of the carrier, the electric control linear driving device is installed at the lower end of the carrier and is connected with the movable sliding seat and is used for driving the movable sliding seat to translate towards two sides relative to the carrier, the second displacement sensor is installed at the lower end of the carrier and is used for monitoring the translational displacement of the movable sliding seat relative to the two sides of the carrier, the first displacement sensor, the second displacement sensor and the electric control linear driving device are respectively connected with a controller, and the second translational magnetic member is a permanent magnet or an electromagnet.
Further, the electric control linear driving device is a linear motor.
Furthermore, the lower end of the carrier is provided with a first slide rail extending towards the two sides of the carrier, and the second support is arranged on the first slide rail through a matched slide block.
Further, the self-adaptive deflection centering assembly comprises a first swinging magnetic force piece, the first swinging magnetic force piece is assembled on the rotating shaft through a third support and is positioned at the lower end of the rotating shaft, and the first swinging magnetic force piece is a permanent magnet or an electromagnet.
Further, the adaptive deflection centering assembly comprises a second swinging magnetic member, a reference shaft, a first angle sensor, a second angle sensor and an electric control rotation driving device, the second swinging magnetic member is assembled on the reference shaft through a fourth support and is located at the lower end of the reference shaft, the reference shaft is rotatably assembled at the lower end of the movable sliding seat, the reference shaft and the rotating shaft are coaxially distributed, the electric control rotation driving device is installed at the lower end of the movable sliding seat and is connected with one end of the rotating shaft and used for driving the rotating shaft to drive the probe wheel and the wheel carrier to swing relative to two sides of the track, the first angle sensor is installed on the rotating shaft and is used for monitoring the rotation angle of the rotating shaft, the second angle sensor is installed on the reference shaft and is used for monitoring the rotation angle of the reference shaft, the first angle sensor, the second angle sensor and the electric control rotation driving device are respectively connected with the controller, and the second swinging magnetic member is a permanent magnet or an electromagnet.
Further, the electrically controlled rotary driving device is a speed reducing motor.
Furthermore, the lower end of the carrier is provided with a second slide rail extending towards the two sides of the carrier, and the upper end of the movable slide seat is arranged on the second slide rail through a matched slide block.
The beneficial effects of the invention are: structural design is reasonable, can visit wheel and track tread centering according to the angle change of track and spy wheel and the adjustment that the displacement changes the self-adaptation, ensures to visit the validity and the accuracy that the wheel detected a flaw.
Still provide a track flaw detection car, including track flaw detector flaw detection wheel automatic centering device.
Drawings
FIG. 1 is a schematic structural diagram of one embodiment of an automatic centering device for a flaw detection wheel of a rail flaw detector according to the invention;
FIG. 2 is a schematic structural diagram of another embodiment of the automatic centering device for the flaw detection wheel of the rail flaw detector of the present invention;
FIG. 3 is a schematic structural diagram of an automatic centering device of a flaw detection wheel of the rail flaw detector according to still another embodiment of the present invention;
fig. 4 is a schematic structural view of still another embodiment of the automatic centering device for the flaw detection wheel of the rail flaw detector of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. a carrier; 2. moving the sliding seat; 3. detecting a wheel; 11. a first slide rail; 12. a second slide rail; 31. a rotating shaft; 41. a first translational magnetic member; 51. a second translational magnetic force member; 52. a first displacement sensor; 53. a second displacement sensor; 54. an electrically controlled linear drive; 61. a first swing magnetic member; 71. a second swinging magnetic member; 72. a reference axis; 73. a first angle sensor; 74. a second angle sensor; 75. an electrically controlled rotary drive.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
Example (b): as shown in fig. 1 to 4, the automatic centering device for a flaw detection wheel of a track flaw detector in this embodiment includes a carrier 1, a movable sliding seat 2, and a detection wheel 3, where the movable sliding seat 2 is slidably mounted at a lower end of the carrier 1, the detection wheel 3 is provided with a wheel carrier, the wheel carrier is rotatably mounted at a lower end of the movable sliding seat 2 through a rotating shaft 31, the detection wheel 3 is used to vertically contact with a tread of a track to detect a flaw of the track, the movable sliding seat 2 is connected with an adaptive translational centering assembly, the adaptive translational centering assembly is used to drive the detection wheel 3 to be translationally returned after the detection wheel 3 is translationally deviated relative to two sides of the track, so that the detection wheel 3 is vertically contacted with a middle portion of the tread of the track, the rotating shaft 31 is connected with an adaptive deflection centering assembly, and the adaptive deflection centering assembly is used to drive the detection wheel 3 to be translationally returned after the detection wheel 3 is translationally deviated relative to two sides of the track, so that the detection wheel 3 is vertically contacted with the middle portion of the tread of the track.
In this embodiment, when the device is used, the probe wheel 3 is supported on the tread of the rail, when the device is used for initial flaw detection, the probe wheel 3 is ensured to be in vertical contact with the middle of the tread of the rail, and flaw detection is performed along with the movement of the probe wheel 3 along the length direction of the rail, because the rail can be displaced relative to the probe wheel 3 (including the displacement relative to the width direction, namely the translation of two sides, and the deflection angles relative to two sides of the rail), the probe wheel 3 can generate offset of two sides and the swinging offset of an angle relative to the middle of the tread of the rail in the moving flaw detection process, after the two types of offset are generated, the self-adaptive translation centering assembly can immediately adjust the translation displacement of the movable slide carriage 2 relative to the carrier 1, so that the probe wheel 3 can be adjusted to be perpendicular to the middle of the tread of the rail relative to the rail, the self-adaptive deflection centering assembly immediately adjust the rotating shaft 31 to drive the probe wheel 3 and the wheel carrier to swing, so that the probe wheel 3 is in vertical contact with the tread of the rail, the whole device is reasonable in structural design, and the device can adjust the probe wheel and the tread of the rail according to the angle change and the change of the rail, thereby ensuring the effectiveness and the accuracy of flaw detection.
In this embodiment, the specific structural combination of the adaptive translational centering component and the adaptive yaw centering component at least includes the following four types:
1) As shown in fig. 1, the adaptive translational centering assembly includes a first translational magnetic member 41, and the first translational magnetic member 41 is mounted to the lower end of the movable slider 2 through a first bracket. The adaptive deflection centering assembly includes a first swing magnetic member 61, the first swing magnetic member 61 is assembled on the rotating shaft 31 through a third bracket and is located at the lower end of the rotating shaft 31, and the first translation magnetic member 41 is a permanent magnet or an electromagnet.
In the scheme 1), the probe wheel 3 is in translation centering (centering of the probe wheel 3 on two sides (width direction) of the track) and the first translation magnetic part 41 drives the movable sliding seat 2 and the probe wheel 3 to realize translation centering on two sides. The first translational magnetic part 41 is in a cuboid shape, the width of the first translational magnetic part is close to that of the rail, in the flaw detection process, along with the deviation of the rail, the second translational magnetic part 51 can drive the movable sliding seat 2 to slide under the attraction of magnetic force to keep the stable attraction of the first translational magnetic part and the second translational magnetic part (the second translational magnetic part 51 can be adsorbed by the magnetic force and finally moves to the upper part of the middle part of the tread of the rail), wherein the magnetic force of the first translational magnetic part 41 is large enough to ensure that the probe wheel 3 can move to the middle part of the tread of the rail along with the magnetic force, and the stable centering of the probe wheel 3 and the movable sliding seat 2 is realized.
Scheme 1) the angle centering of spy wheel 3 (spy wheel 3 is for the pendulum angle centering of track both sides) is realized through first pendulum magnetic part 61, and this first pendulum magnetic part 61 is close with the track to stable attraction, at the in-process of detecting a flaw, along with the track for the pendulum of spy wheel 3 shifts, second translation magnetic part 51 can drive third support and pivot 31, spy wheel 3 realizes the angle swing under the attraction of magnetic force, finally realizes spy wheel 3 and the perpendicular contact of track tread. The width of the first swinging magnetic force piece 61 is close to the rail, and the magnetic force of the magnet is large enough to ensure that the device can stably attract the steel rail during flaw detection along the rail.
2) As shown in fig. 2, the adaptive translational centering assembly includes a second translational magnetic member 51, a first displacement sensor 52, a second displacement sensor 53 and an electrically controlled linear driving device 54, the second translational magnetic member 51 is slidably mounted at the lower end of the carrier 1 through a second bracket and can be translated relative to two sides of the track, the first displacement sensor 52 is mounted at the lower end of the carrier 1 and is used for monitoring the amount of displacement of the second bracket relative to the two sides of the carrier 1, the electrically controlled linear driving device 54 is mounted at the lower end of the carrier 1 and is connected to the movable slide base 2 and is used for driving the movable slide base 2 to translate relative to the carrier 1 towards two sides, the second displacement sensor 53 is mounted at the lower end of the carrier 1 and is used for monitoring the amount of displacement of the movable slide base 2 relative to the two sides of the carrier 1, the first displacement sensor 52, the second displacement sensor 53 and the electrically controlled linear driving device 54 are respectively connected to the controller, and the second translational magnetic member 51 is a permanent magnet or an electromagnet. The adaptive deflection centering assembly includes a first swing magnetic member 61, and the first swing magnetic member 61 is assembled on the rotating shaft 31 through a third bracket and is located at the lower end of the rotating shaft 31.
In the scheme 2), the probe wheel is aligned in a translation manner by the electrically controlled linear driving device 54, specifically, the width of the second translation magnetic member 51 is close to the rail, the magnetic force of the second translation magnetic member 51 is large enough to ensure that the flaw detection vehicle stably attracts the rail during traveling, and along with the deviation of the rail during flaw detection, the second translation magnetic member 51 drives the movable sliding seat 2 to slide under the attraction of the magnetic force to keep the stable attraction of the two (the second translation magnetic member 51 is adsorbed by the magnetic force and finally moves to the upper part of the middle tread of the rail), meanwhile, the first displacement sensor 52 detects the translation displacement of the movable sliding seat 2 relative to the rail and feeds back the translation displacement to the controller, the controller drives the electrically controlled linear driving device 54 to drive the movable sliding seat 2 to translate (the translation displacement is equal to the vertical displacement detected by the first displacement sensor 52), so that the probe wheel 3 is translated to be perpendicular to the middle tread of the rail again, and the electrically controlled linear driving device 54 stops running after the second displacement sensor 53 detects that the translation displacement of the movable sliding seat 2 is equal to the translation displacement of the second support.
The angular centering of the probe wheel 3 in the scheme 2) is realized through the first swinging magnetic member 61, and the implementation manner is the same as that in the scheme 1), which is not described herein again.
3) As shown in fig. 3, the adaptive translational centering assembly includes a first translational magnetic member 41, the first translational magnetic member 41 is mounted at the lower end of the movable sliding base 2 through a first bracket, and the first swinging magnetic member 61 is a permanent magnet or an electromagnet. The adaptive deflection centering assembly comprises a second swinging magnetic member 71, a reference shaft 72, a first angle sensor 73, a second angle sensor 74 and an electronic control rotation driving device 75, wherein the second swinging magnetic member 71 is assembled on the reference shaft 72 through a fourth bracket and is positioned at the lower end of the reference shaft 72, the reference shaft 72 is rotatably assembled at the lower end of the movable sliding seat 2, the reference shaft 72 and the rotating shaft 31 are coaxially distributed, the electronic control rotation driving device 75 is installed at the lower end of the movable sliding seat 2 and is connected with one end of the rotating shaft 31 and is used for driving the rotating shaft 31 to drive the probe wheel 3 and the wheel carrier to swing relative to two sides of a track, the first angle sensor 73 is installed on the rotating shaft 31 and is used for monitoring the rotation angle of the rotating shaft 31, the second angle sensor 74 is installed on the reference shaft 72 and is used for monitoring the rotation angle of the reference shaft 72, the first angle sensor 73, the second angle sensor 74 and the electronic control rotation driving device 75 are respectively connected with a controller, and the second swinging magnetic member 71 is a permanent magnet or an electromagnet.
In the scheme 3), the translation centering of the probe wheel is realized through the first translation magnetic member 41, and the implementation manner is the same as that in the scheme 1), which is not described herein again.
In the scheme 3), the angle centering of the probe wheel 3 is realized through the electric control rotary driving device 75, and specifically, the electric control rotary driving device 75 is installed on the movable sliding seat 2. The electrically controlled rotation driving device 75 can drive the rotating shaft 31 and the detection wheel 3 to swing at a small angle. In the flaw detection process, along with the angle deflection of the track relative to the detection wheel 3, because the second swinging magnetic member 71 is always attracted to the track through magnetic force, the angle of the second swinging magnetic member 71 changes along with the angle change of the steel rail, after the track deflects relative to the detection wheel 3 (namely the track deflects relative to the angle of the second swinging magnetic member 71), the second swinging magnetic member 71 can self-adaptively rotate under the action of magnetic force and finally returns to stably attract the track, in the process, the angle changes and is detected by the second angle sensor 74 and fed back to the controller, the controller controls the electric control rotation driving device 75 to drive the rotating shaft 31 and the detection wheel 3 to swing by a corresponding angle, so that the detection wheel 3 returns to a state of being vertically contacted with a track tread (in the process, the first angle sensor 73 is used for monitoring the swinging angle of the rotating shaft 31 in real time), and until the value is equal to the value monitored by the second angle sensor 74, the controller controls the rotation driving device 75 to stop running, and finally realize the automatic electric control of the angle of the detection wheel 3.
3) As shown in fig. 4, the adaptive translational centering assembly includes a second translational magnetic member 51, a first displacement sensor 52, a second displacement sensor 53 and an electrically controlled linear driving device 54, the second translational magnetic member 51 is slidably mounted at the lower end of the carrier 1 through a second bracket and can be translated with respect to two sides of the track, the first displacement sensor 52 is mounted at the lower end of the carrier 1 for monitoring the amount of displacement of the second bracket with respect to the translation of the carrier 1, the electrically controlled linear driving device 54 is mounted at the lower end of the carrier 1 and is connected to the movable slide 2 for driving the movable slide 2 to be translated with respect to the carrier 1 toward two sides, the second displacement sensor 53 is mounted at the lower end of the carrier 1 for monitoring the amount of displacement of the movable slide 2 with respect to the translation of the carrier 1, the first displacement sensor 52, the second displacement sensor 53 and the electrically controlled linear driving device 54 are respectively connected to a controller, and the controller is connected to the first displacement sensor 52, the second displacement sensor 53 and the electrically controlled linear driving device 54, and the controller
The second translational magnetic force member 51 is a permanent magnet or an electromagnet. The adaptive deflection centering assembly comprises a second 5-pendulum rotating magnetic force member 71, a reference shaft 72, a first angle sensor 73, a second angle sensor 74 and an electric control unit
A rotation driving device 75, wherein the second swinging magnetic member 71 is mounted on the reference shaft 72 through a fourth bracket and is located at a lower end of the reference shaft 72, the reference shaft 72 is rotatably mounted at a lower end of the movable slider 2, the reference shaft 72 is coaxially distributed with the rotation shaft 31, and the electrically controlled rotation driving device
A moving device 75 is installed at the lower end of the movable slide 2 and connected to one end of the rotating shaft 31 for driving 0 the rotating shaft 31 to drive the probe wheel 3 and the wheel carrier to swing and rotate relative to the two sides of the track, the first angle sensor
The device 73 is mounted on the rotating shaft 31 for monitoring the rotation angle of the rotating shaft 31, the second angle sensor 74 is mounted on the reference shaft 72 for monitoring the rotation angle of the reference shaft 72, the first angle sensor 73, the second angle sensor 74 and the electric control rotation driving device 75 are respectively connected with a controller, and the second swing magnetic member 71 is a permanent magnet or an electromagnet.
5, in the scheme 4), the principle of the translational centering of the probe wheel 3 is the same as that in the scheme 2), and details are not described herein.
In the scheme 4), the principle of angle centering of the probe wheel 3 is the same as that in the scheme 3), and is not described herein again.
In the above-mentioned scheme 2) and scheme 4), the above-mentioned electronic control linear driving device 54 may adopt the existing linear motor, and the specific model is flexibly and reasonably selected according to the actual use requirement.
In the embodiment, the lower end of the carrier 1 is provided with a first slide rail 11 extending towards both sides thereof (i.e. extending in the width direction of the track, i.e. extending in the axial direction of the probe wheel 3), and the second bracket is mounted on the first slide rail 11 by means of a sliding block. A stable sliding fit between the second bracket and the carrier 1 is ensured.
In this embodiment, the above-mentioned electrically controlled rotary driving device 75 may be a speed reduction motor in the prior art, and 5 specific models are selected flexibly and reasonably according to actual use requirements.
In this embodiment, a second slide rail 12 is provided at the lower end of the carrier 1 and extends towards both sides thereof (i.e. extends in the width direction of the rail, i.e. in the axial direction with respect to the probe wheel 3), and the upper end of the mobile carriage 2 is mounted on the second slide rail 12 by means of a suitable slide block. A stable sliding fit between the moving slide 2 and the carrier 1 is ensured.
In this embodiment, two second sliding rails 12 are provided and are distributed at two ends of the lower end of the carrier 1 at intervals.
Example 2
The rail flaw detection vehicle of the present embodiment includes the rail flaw detector flaw detection wheel automatic centering device of embodiment 1. Wherein, at least one automatic centering device for flaw detection wheels of the rail flaw detector is respectively arranged on two sides of the body of the flaw detection vehicle.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The utility model provides a track flaw detector wheel automatic centering device of detecting a flaw which characterized in that: including carrier (1), removal slide (2) and spy wheel (3), remove slide (2) slip assembly in the lower extreme of carrier (1), be equipped with the wheel carrier on spy wheel (3), the wheel carrier through pivot (31) rotatable assembly in remove slide (2) lower extreme, spy wheel (3) be used for with orbital tread perpendicular contact to survey orbital injury, remove slide (2) and connect self-adaptation translation centering subassembly, self-adaptation translation centering subassembly is used for order about after spy wheel (3) relative track both sides translation off tracking spy wheel (3) translation return, so that spy wheel (3) and orbital tread middle part perpendicular contact, pivot (31) are connected with self-adaptation deflection centering subassembly, self-adaptation deflection centering subassembly is used for order about after spy wheel (3) relative track both sides yaw skew spy wheel (3) yaw return, so that it contacts perpendicularly with orbital tread middle part to make to visit wheel (3).
2. The automatic centering device for flaw detection wheels of the rail flaw detector of claim 1, wherein: the self-adaptive translational centering assembly comprises a first translational magnetic force piece (41), the first translational magnetic force piece (41) is assembled at the lower end of the movable sliding seat (2) through a first support, and the first translational magnetic force piece (41) is a permanent magnet or an electromagnet.
3. The automatic centering device for flaw detection wheels of the rail flaw detector of claim 1, wherein: the self-adaptive translational centering component comprises a second translational magnetic force piece (51), a first displacement sensor (52), a second displacement sensor (53) and an electric control linear driving device (54), wherein the second translational magnetic force piece (51) is assembled at the lower end of the carrier (1) in a sliding mode through a second support and can translate relative to two sides of a track, the first displacement sensor (52) is installed at the lower end of the carrier (1) and used for monitoring the translational displacement of the second support relative to two sides of the carrier (1), the electric control linear driving device (54) is installed at the lower end of the carrier (1) and connected with the movable sliding seat (2) and used for driving the movable sliding seat (2) to translate towards two sides relative to the carrier (1), the second displacement sensor (53) is installed at the lower end of the carrier (1) and used for monitoring the translational displacement of the movable sliding seat (2) relative to two sides of the carrier (1), the first displacement sensor (52), the second displacement sensor (53) and the electric control linear driving device (54) are respectively connected with a controller, and the second translational magnetic force piece (51) is a permanent magnet or an electromagnet.
4. The automatic centering device of the flaw detection wheel of the rail flaw detector of claim 3, characterized in that 5: the electric control linear driving device (54) is a linear motor.
5. The automatic centering device of the flaw detection wheel of the rail flaw detector of claim 3, characterized in that: the lower end of the carrier (1) is provided with first sliding rails (11) extending towards the two sides of the carrier, and the second support is arranged on the first sliding rails (11) through adaptive sliding blocks.
6. The automatic centering 0 device of the flaw detection wheel of the rail flaw detector according to any one of claims 1 to 5, wherein: the self-adaptive deflection centering assembly comprises a first swinging magnetic force piece (61), the first swinging magnetic force piece (61) is assembled on the rotating shaft (31) through a third support and is positioned at the lower end of the rotating shaft (31), and the first swinging magnetic force piece (61) is a permanent magnet or an electromagnet.
7. The automatic centering device for flaw detection wheels of rail flaw detectors of any one of claims 1 to 5, wherein: the self-adaptive deflection centering assembly comprises a second swinging magnetic force piece (71), a reference shaft (72) of a base 5, a first angle sensor (73), a second angle sensor (74) and an electric control rotation driving device (75), wherein the second swinging magnetic force piece (71) is assembled on the reference shaft (72) through a fourth support and is positioned at the lower end of the reference shaft (72), the reference shaft (72) is rotatably assembled at the lower end of the movable sliding seat (2), the reference shaft (72) and the rotating shaft (31) are coaxially distributed, the electric control rotation driving device (75) is assembled at the lower end of the movable sliding seat (2) and is connected with one end of the rotating shaft (31) 0 to drive the rotating shaft (31) to drive the probe wheel (3) and the wheel carrier to swing relative to two sides of a track, the first angle sensor (73) is assembled on the rotating shaft (31) to monitor the rotating angle of the rotating shaft (31), the second angle sensor (74) is assembled on the shaft (72) to monitor the rotating angle of the reference shaft (72), and the reference shaft (72), the second angle sensor (73) and the electric control the second swinging magnetic force sensor (71) and the electromagnet (71) or the electric control device (75).
8. The automatic centering device for flaw detection wheels of rail flaw detectors of claim 7, wherein: the electric control rotation driving device (75) is a speed reducing motor.
9. The automatic centering device for flaw detection wheels of rail flaw detectors of any one of claims 1 to 5, wherein: the lower end of the carrier (1) is provided with second sliding rails (12) extending towards the two sides of the carrier, and the upper end of the movable sliding seat (2) is arranged on the second sliding rails (12) through adaptive sliding blocks.
10. A rail flaw detection vehicle is characterized in that: the automatic centering device for the flaw detection wheel of the rail flaw detector according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211543079.3A CN115973220B (en) | 2022-12-02 | 2022-12-02 | Automatic centering device for flaw detection wheel of rail flaw detector and rail flaw detection vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211543079.3A CN115973220B (en) | 2022-12-02 | 2022-12-02 | Automatic centering device for flaw detection wheel of rail flaw detector and rail flaw detection vehicle |
Publications (2)
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| CN211166869U (en) * | 2019-12-25 | 2020-08-04 | 北京世纪东方通讯设备有限公司 | Railway track flaw detection mechanism and flaw detection vehicle |
| KR20200145191A (en) * | 2019-06-21 | 2020-12-30 | 김봉택 | A phased array ultrasound rail automatic inspection device |
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| US4044594A (en) * | 1976-07-22 | 1977-08-30 | Krautkramer-Branson, Incorporated | Ultrasonic track testing carriage |
| CN104354718A (en) * | 2014-11-04 | 2015-02-18 | 上海市东方海事工程技术有限公司 | Servo centering device of rail flaw detection robot |
| CN106353400A (en) * | 2016-08-25 | 2017-01-25 | 上海市东方海事工程技术有限公司 | Ultrasonic wheel detector detection device |
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| CN115973220B (en) | 2023-11-14 |
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