KR102684464B1 - Ultrasonic Inspection Device of Wheels for Railway Vehicles - Google Patents

Abstract

The present invention relates to an ultrasonic flaw detection device for railway vehicle maintenance, comprising a bogie that enters the lower part of the axle of a railway car towed by a crane, a lifting unit installed on the upper part of the bogie and raised and lowered toward the wheels of the towed axle, and A base frame installed on the top of the lifting unit and approaching the wheel as the lifting unit operates, a scanner body installed on the top of the base frame and surrounding a portion of the outer peripheral surface and side of the wheel, and mounted on the scanner body. A probe module that generates ultrasonic waves to the inspection area of the wheel and a wheel rotation unit installed on the upper part of the base frame and disposed on both sides of the scanner body and rotating the wheel by contacting the wheel. An ultrasonic flaw detection device for railway vehicle maintenance is disclosed.

Description

Ultrasonic Inspection Device of Wheels for Railway Vehicles}

The present invention relates to an ultrasonic inspection device for railway vehicle maintenance, which enters the lower part of the axle of a towed railway vehicle and moves the probe module according to the position of the wheel to inspect internal cracks occurring in the wheel. It's about devices.

In general, the wheels of a railroad vehicle wear out due to friction with the rail during operation, and at this time, the wear condition of the wheels does not occur uniformly and uneven wear occurs due to the load of the vehicle or other factors.

In this way, when the wheels are worn unevenly, it not only deteriorates the riding comfort of the vehicle but also causes safety problems. Therefore, wheels whose uneven wear exceeds a certain range must be replaced.

In this case, in order to solve problems such as costs due to replacement of wheels, conventionally, wheels with uneven wear are inspected and refurbished wheels that do not have internal cracks are regenerated through cutting processing to remove uneven wear, etc. there is.

However, conventional devices for regenerating wheels of railway vehicles are equipped with inspection devices for checking internal cracks in wheels and devices for remanufacturing of reproducible wheels in independent workshops to perform inspection and regeneration.

That is, conventionally, it is first confirmed whether the wheel can be rebuilt at the inspection workshop and then transferred to another workshop to regenerate the wheel. At this time, since the wheels must be moved to each work site and work performed, it is common to work on them separately from the vehicle.

The wheels separated from the railway vehicle in this way are towed by a crane to be mounted on the inspection device. At this time, a precise inspection can be performed only when the wheel towed by the crane is mounted at a designated location on the inspection device. However, since the wheel has a considerable weight, it is very difficult to place the wheel at a designated location on the inspection device using a crane, making inspection of the wheel difficult. There are problems that make it difficult to perform quickly and precisely.

KR 10-1955448 B (2019.02.28)

The present invention is intended to solve the above problems, and is an ultrasonic inspection device for railway vehicle maintenance that enters the lower part of the axle of a towed railway vehicle and moves the probe module according to the position of the wheel to inspect internal cracks occurring in the wheel. The purpose is to provide.

The technical idea of the present invention for achieving the above object includes a bogie that enters the lower part of the axle of a railway vehicle towed by a crane, a lifting unit installed on the upper part of the bogie and raised and lowered toward the wheels of the towed axle, and , a base frame installed on the top of the lifting unit and approaching the wheel as the lifting unit operates, a scanner body installed on the top of the base frame and surrounding a portion of the outer peripheral surface and side of the wheel, and the scanner body. It includes a probe module mounted on the wheel to generate ultrasonic waves to the inspection area of the wheel, and a wheel rotation unit installed on the upper part of the base frame and disposed on both sides of the scanner body and rotating the wheel by contacting the wheel. This is achieved by an ultrasonic flaw detection device for railway vehicle maintenance.

Here, the scanner body has a bottom part facing the outer peripheral surface of the wheel, a side part disposed on both sides of the bottom part and facing the side of the wheel, and connects the side part and the bottom part, and the side part is closer to or farther away from the side of the wheel. It is desirable to include a moving part that moves.

In addition, it is preferable that probe modules are installed on the bottom and side surfaces, respectively.

Additionally, the side portion is preferably provided with an encoder that detects rotation of the wheel.

In addition, the movable portion is formed in an upright state on both sides of the bottom portion, and provides power to cause the movable block to move in a straight line, a side portion having a through hole through which the probe module passes, a movable block on which the probe module is mounted. It is preferable to include an actuator that is fixed to the side part in a state spaced apart from the side part and a fixing bracket on which the actuator is installed.

In addition, the probe module preferably includes a probe that irradiates ultrasonic waves to the inspection area of the vehicle, a guide bracket that supports the probe, and an adjustment housing that supports the guide bracket and is fixed to the scanner body.

In addition, the probe module further includes a buffering unit that moves the probe toward the scanner body, and the buffering unit is screwed to both ends of the guide bracket, a support shaft penetrating the adjustment housing, and a support shaft connected to the support shaft. It is preferable to include a buffer member that is positioned between the guide bracket and the adjustment housing in an interposed state to provide elastic force.

In addition, the probe module further includes a tilting control unit that tilts the probe, and the tilting control unit is formed on the inside of the rotation pins formed on both side ends of the probe and the guide bracket facing the rotation pins. It is preferable to include a rotation hole for supporting the rotation pin and a support member that is inserted into the rotation hole orthogonal to the rotation pin and presses the rotation pin with elastic force.

In addition, the wheel rotation unit is installed on a guide rail installed on the upper part of the base frame, a guide block guided and moved by the guide rail, a roller bracket installed on the upper part of the guide block, and the roller bracket, and the wheel It is preferable to include a support roller in contact with the outer peripheral surface of.

In addition, it is preferable that one of the wheel rotation units disposed on both sides of the scanner body is equipped with a drive motor that provides rotational force to the support roller.

In addition, the bogie further includes a rust removal part that contacts the surface of the wheel to remove rust formed on the surface of the wheel, and the rust removal part includes a post extending upward from the bogie, and a clamp surrounding and tightening the outer peripheral surface of the post. It is preferable to include a supporter that is bound by the clamp and the hinge and whose angle is adjusted, and a scraper provided at an end of the supporter to remove rust formed on the surface of the wheel.

In addition, the bogie preferably further includes a foreign matter removal unit that burns and removes foreign matter formed on the surface of the wheel by irradiating a laser toward the surface of the wheel.

According to the ultrasonic inspection device for railway vehicle maintenance according to the present invention, the position of the probe module and encoder can be quickly and precisely adjusted so that the bogie enters the lower part of the axle towed by a crane and comes into close contact with the surface of the wheel, thereby inspecting cracks in the wheel. You can do this quickly and conveniently.

In addition, in the present invention, the positions of a plurality of probe modules installed on the bottom and side surfaces of the scanner body can be adjusted using an adjustment housing, and the positions of the probes can be changed from this, making it possible to accurately inspect cracks occurring inside the vehicle wheel.

In addition, in the present invention, the guide bracket of the probe module and the adjustment housing are connected by a buffer unit, so that when excessive pressure is applied to the probe in contact with the surface of the wheel, the probe moves toward the adjustment housing, causing excessive pressure to be applied to the probe and causing damage. prevent it from happening.

In addition, in the present invention, the probe installed on the guide bracket is supported by a tilting adjustment unit, so that the tilt of the probe that irradiates ultrasonic waves toward the surface of the wheel can be adjusted, making it possible to accurately inspect cracks occurring inside the wheel.

In addition, the present invention is provided with a rust removal unit and a foreign matter removal unit, so that rust formed on the wheel can be removed by a scraper, and foreign substances formed on the wheel can be removed by burning with a high-temperature laser beam, so that rust and foreign matter formed on the wheel can be removed at the same time as non-destructive inspection of the wheel. Foreign substances can be easily removed.

Figures 1 and 2 are front and side views showing an ultrasonic inspection device for railway vehicle maintenance according to the present invention.
Figures 3 and 4 are a plan view and a side view showing the scanner body of the ultrasonic inspection device for railway vehicle maintenance according to the present invention.
Figures 5 and 6 are front and side views showing the wheel rotation unit of the ultrasonic inspection device for railway vehicle maintenance according to the present invention.
Figures 7 and 8 are a plan view and a perspective view showing a probe module among the ultrasonic flaw detection devices for railway vehicle maintenance according to the present invention.

Terms or words used in this specification and claims should not be construed as limited to their usual or dictionary meanings, and the inventor may appropriately define the concept of terms to explain his or her invention in the best way. It must be interpreted as meaning and concept consistent with the technical idea of the present invention based on principles.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings.

Figures 1 and 2 are front and side views showing an ultrasonic inspection device for railway vehicle maintenance according to the present invention.

When described with reference to the drawings, the ultrasonic inspection device for railway vehicle maintenance according to the present invention is installed on a bogie 100 that enters the lower part of the axle (TS) of a railway vehicle towed by a crane, and on the upper part of the bogie 100. A lifting unit 200 that moves up and down toward the wheels TW of the towed axle TS, and is installed on the top of the lifting unit 200 and approaches the wheels TW according to the operation of the lifting unit 200. A base frame 250, a scanner body 300 installed on the upper part of the base frame 250 and surrounding the outer peripheral surface and a portion of the side of the wheel TW, and a scanner body 300 mounted on the scanner body 300 to cover the wheel TW. The probe module 400, which generates ultrasonic waves to the inspection area, is installed on the upper part of the base frame 250, and is placed on both sides of the scanner body 300, and contacts the wheel TW to rotate the wheel TW. It consists of a rotation unit 500.

To elaborate, as shown in FIGS. 1 and 2, wheels 110 are installed at the bottom of the bogie 100 so that the bogie 100 can move below the axle (TS) of a railway vehicle towed by a crane. At this time, the wheels 110 of the bogie 100 are seated on a rail (not shown) installed on the ground and can move along the rail to the lower part of the axle TS pulled by a crane.

In this way, the wheel 110 that moves the bogie 100 to the lower part of the axle TS towed by the crane is linked to a drive motor as needed, and the drive motor provides power to the wheel so that the bogie 100 moves along the rail. It can also be implemented to be portable.

In addition, a brake 120 is installed on the lower surface of the bogie 100 to prevent the bogie 100 moving to the lower part of the axle TS from unauthorized movement. The brake 120 has a rod expandable structure. When the brake 120 is activated, the rod is pulled toward the ground and lifts the wheel 110 mounted on the rail to fix the bogie 100 so that it does not move.

And, a lifting unit 200 is installed on the upper part of the bogie 100 to lift and lower the wheel TW of the axle TS pulled by the crane. The lifting unit 200 includes a driving motor 210 installed on the bogie 100, a gearbox 220 that converts the rotational force of the driving motor 210 into an appropriate rotation ratio, and a rotational force output from the gearbox 220. It consists of a rack 230 that converts to linear movement. The rack 230 is provided to move linearly up and down on the upper surface of the cart 100.

In addition, the driving motor 210 and the gearbox 220 are connected by a shaft, and a clutch 240 is provided on the shaft to control the rotational force transmitted from the driving motor 210 to the gearbox 220.

In this way, when the lifting unit 200 is provided on the bogie 100, the gearbox 220 converts the rotational force of the driving motor 210 to an appropriate rotation ratio according to the operation of the driving motor 210, and then the rack 230 is moved in a straight line in the vertical direction of the bogie 100 to move the base frame 250 installed on the top of the rack 230 toward or away from the wheel TW pulled by the crane.

Meanwhile, a scanner body 300 is installed on the upper part of the base frame 250, surrounding the outer peripheral surface and a portion of the side surface of the wheel TW. As shown in FIGS. 3 and 4, the scanner body 300 has a bottom portion 310 facing the outer peripheral surface of the wheel TW, and is disposed on both sides of the bottom portion 310 to form a contact surface with the side surface of the wheel TW. It consists of an opposing side part 320 and a movable part 330 that connects the side part 320 and the bottom part 310 and moves the side part 320 closer to or away from the side of the wheel TW.

At this time, the side portions 320 are formed on both sides of the bottom portion 310, so that the bottom portion 310 and the side portions 320 have an approximately “∪” shape. In addition, a probe module 400 is provided on the bottom 310 and one side of the scanner body 300, and an encoder 340 that detects the rotation of the wheel TW is provided on the other side.

Accordingly, the probe 410 of each probe module 400 provided on the bottom 310 and one side irradiates ultrasonic waves to the outer peripheral surface and side of the wheel TW to inspect cracks occurring inside the wheel TW. I do it.

As shown in FIG. 3, the probe modules 400 provided on the bottom portion 310 and the side portion 320 of the scanner body 300 are provided at three locations on the bottom portion 310 of the scanner body 300. One location is provided on the side part 320, and at this time, the probe module 400 is located on the bottom of the scanner body 300 so that the probe module 400 can be located at a location where cracks occur frequently on the wheel (TW). It is disposed at 310 and the side portion 320.

In addition, the movable part 330 is formed in an upright state on both sides of the bottom part 310, and has a side part 320 with a through hole through which the probe module 400 passes, and a movable block on which the probe module 400 is mounted. (332), an actuator 333 that provides power to move the movable block 332 in a straight line, and a fixing bracket fixed to the side part 320 in a state spaced apart from the side part 320 and on which the actuator 333 is installed. It consists of (334).

In this movable part 330, when the wheel TW is located between the side parts 320 provided on both sides of the bottom part 310, the actuator 333 operates to move the movable block 332 to the side of the wheel TW. By moving, the probe module 400 and encoder 340 are brought into close contact with the side of the wheel TW.

Meanwhile, a wheel rotation unit 500 that rotates the wheel TW is installed on both sides of the scanner body 300 in the upper part of the base frame 250. As shown in FIGS. 5 and 6, the wheel rotation unit 500 includes a guide rail 510 installed on the upper part of the base frame 250, and a guide block 520 that moves while being guided by the guide rail 510. It consists of a roller bracket 530 installed on the upper part of the guide block 520 and a support roller 540 installed on the roller bracket 530 and in contact with the outer peripheral surface of the wheel TW.

In this way, the wheel rotation unit 500 moves the guide block 520 along the guide rail 510 when the wheel TW is located between the side parts 320 provided on both sides of the bottom part 310 to connect the wheel ( The position of the support roller 540 can be adjusted so that the outer peripheral surface of the TW) can be stably seated on the support roller 540.

In addition, one of the wheel rotation units 500 disposed on both sides of the scanner body 300 is equipped with a drive motor 550 that provides rotational force to the support roller 540 to rotate the support roller 540. As a result, the wheel TW rotates so that the probe unit 400 can inspect the wheel TW as a whole.

Meanwhile, the probe module 400 provided on the bottom portion 310 and the side portion 320 of the scanner body 300 to inspect cracks occurring inside the wheel TW will be described based on FIGS. 7 and 8.

Figures 7 and 8 are a plan view and a perspective view showing a probe module among the ultrasonic flaw detection devices for railway vehicle maintenance according to the present invention.

When described with reference to the drawings, the probe module 400 includes a probe 410 that irradiates ultrasonic waves to the inspection area of the wheel TW, a guide bracket 420 supporting the probe 410, and the guide bracket 420. ) and is composed of an adjustment housing 430 that is respectively fixed to the scanner body 300, that is, the bottom part 310 and the movable block 332.

The guide bracket 420 has a rectangular frame shape as shown in FIG. 7, and the probe 410 is located at the center of the guide bracket 420. At this time, both side ends of the probe 410 are connected to the inner surface of the guide bracket 420, so that the probe 410 is supported on the guide bracket 420.

In addition, an adjustment housing 430 is provided at the lower part of the guide bracket 420, which is respectively fixed to the bottom portion 310 and the movable block 332. The adjustment housing 430 has an “H” shape and is located on both sides. A guide groove 431 is formed.

These guide grooves 431 are formed long in the direction of both side ends of the probe 410, as shown in FIG. 7, and are penetrated by bolts (not shown) that are respectively screwed to the bottom part 310 and the movable block 332. The adjustment housing 430 is fixed to the bottom portion 310 and the movable block 332, respectively.

In this way, when the guide groove 431 is formed in the adjustment housing 430, the position of the adjustment housing 430 fixed to the bottom portion 310 and the movable block 332 can be adjusted as needed. The bottom portion 310 ) and the movable block 332 and the respective screwed bolts are loosened and the position of the adjustment housing 430 is adjusted and the bolt is tightened to adjust the position of the probe 410 for irradiating ultrasonic waves to the wheel TW. You can change it.

And, the guide bracket 420 and the adjustment housing 430 are connected by a shock absorbing unit 440 that moves toward the wheel TW. That is, the buffer unit 440 is composed of a support shaft 441 and a buffer member 442 as shown in FIGS. 7 and 8.

To elaborate, the support shaft 441 is screw-fastened to both ends of the guide bracket 420 and has the shape of a rod penetrating the adjustment housing 430, and a buffer member having a coil spring-like structure is attached to the support shaft 441. (442) is interposed.

At this time, the buffer member 442 is positioned between the guide bracket 420 and the adjustment housing 430 while being interposed on the support shaft 441, and exerts elastic force to form the probe 410 in contact with the surface of the wheel TW. When excessive pressure is applied, the buffer member 442 is compressed and the probe 410 moves toward the adjustment housing 430, thereby preventing excessive pressure from being applied to the probe 410 and causing damage.

In addition, the probe module 400 is provided with a tilting control unit 450 that tilts the probe 410, so that the irradiation direction of ultrasonic waves emitted from the probe 410 can be adjusted.

For this purpose, a tilting control unit 450 is provided at the area where the probe 410 and the guide bracket 420 are connected. The tilting control unit 450 adjusts the amount of the probe 410 as shown in the circle in FIG. 8. A rotation pin 451 formed at the side end and a rotation hole 452 formed inside the guide bracket 420 facing the rotation pin 451 to support the rotation pin 451 are formed.

In addition, a support member 453 is installed in the rotation hole 452 to press the rotation pin 451 with elastic force. The support member 453 is made of a coil spring and is perpendicular to the rotation pin 451 to form the rotation hole 452. ) is inserted into.

In this way, the probe 410 is supported by the guide bracket 420 by the rotation pin 451, and the support member 453 pressing the rotation pin 451 is located in the rotation hole 452 of the guide bracket 420. Once inserted, the operator adjusts the probe 410 to face the surface of the wheel TW by tilting the probe 410 around the rotating pin 451 so that ultrasonic waves can be appropriately irradiated to the wheel TW. .

When the operator adjusts the tilting position of the probe 410 in this way, the support member 453, which is inserted into the rotation hole 452 and exerts elastic force on the rotation pin 451, presses the rotation pin 451, causing the probe ( 410) is fixed so that it does not move arbitrarily.

Meanwhile, the bogie 100 is provided with a rust removal unit 600 that removes rust formed on the surface of the wheel TW. As shown in FIG. 1, the rust removal unit 600 includes a post 610 whose lower end is fixed to the cart 100 and whose upper end extends toward the top of the cart 100, and surrounds the outer peripheral surface of the post 610. A tightening clamp 620, a supporter 630 bound to the clamp 620 and a hinge and whose angle is adjusted, and a scraper provided at the end of the supporter 630 to remove rust formed on the surface of the wheel TW ( 640).

This rust removal unit 600 moves the clamp 620 up and down along the post 610 so that the scraper 640 is located at a height where it can contact the outer peripheral surface of the wheel TW. Tighten and secure.

In this way, when the height of the clamp 620 is set, the angle of the supporter 630 from the clamp 620 is adjusted to bring the scraper 640 into close contact with the outer peripheral surface of the wheel TW.

In this way, when the scraper 640 is in close contact with the outer peripheral surface of the wheel TW, the wheel TW is rotated by the wheel rotation unit 500 described above, and the scraper 640 scrapes off the rust formed on the outer peripheral surface of the wheel TW. Rust formed on the wheel (TW) can be easily removed.

Additionally, the bogie 100 is provided with a foreign matter removal unit 700 that removes foreign matter formed on the surface of the wheel TW. As shown in FIG. 2, the foreign matter removal unit 700 may be a laser irradiator that burns and removes foreign matter formed on the surface of the wheel TW by irradiating a laser beam toward the surface of the wheel TW.

According to the ultrasonic flaw detection device for railway vehicle maintenance according to the present invention having the above configuration, the bogie 100 enters the lower part of the axle TS pulled by the crane and comes into close contact with the surface of the wheel TW. 400) and the encoder 340 can be adjusted quickly and precisely, allowing quick and convenient crack inspection of the wheel (TW).

In addition, the present invention adjusts the positions of the plurality of probe modules 400 installed on the bottom part 310 and the side part 320 of the scanner body 300 by the adjustment housing 430, and adjusts the position of the probe 410 from this. can be changed, allowing cracks occurring inside the wheel (TW) to be accurately inspected.

In addition, in the present invention, the guide bracket 420 and the adjustment housing 430 of the probe module 400 are connected by the buffer unit 440, so that excessive pressure is applied to the probe 410 in contact with the surface of the wheel TW. When the probe 410 moves toward the adjustment housing 430, excessive pressure is applied to the probe 410 to prevent damage.

In addition, in the present invention, the probe 410 installed on the guide bracket 420 is supported by the tilt adjustment unit 450, so that the tilt of the probe 410 that irradiates ultrasonic waves toward the surface of the wheel TW can be adjusted. Cracks occurring inside the wheel (TW) can be accurately inspected.

In addition, the present invention is provided with a rust removal unit 600 and a foreign matter removal unit 700, so that rust formed on the wheel TW can be removed by the scraper 640, and foreign substances formed on the wheel TW can be removed with a high-temperature laser beam. Since it can be removed by burning, rust and foreign substances formed on the wheel can be easily removed at the same time as non-destructive testing of the wheel.

100: bogie 110: wheel
200: lifting unit 210: driving motor
220: Gearbox 230: Rack
240: Clutch 250: Base frame
300: scanner body 310: bottom part
320: side part 330: movable part
332: movable block 333: actuator
334: fixing bracket 340: encoder
400: probe module
410: Probe 420: Guide bracket
430: Adjustment housing 440: Shock absorbing unit
441: support shaft 442: buffer member
450: Tilting control unit 451: Rotation pin
452: Rotation hole 453: Support member
500: wheel rotation unit 510: guide rail
520: Guide block 530: Roller bracket
540: Support roller 550: Drive motor
600: rust removal unit 610: post
620: Clamp 630: Supporter
640: Scraper 700: Foreign matter removal unit

Claims (8)

A bogie that enters the lower part of the axle of a railroad car towed by a crane;
a lifting unit installed on the upper part of the bogie to lift and lower the wheel of the towed axle;
a base frame installed at the top of the lifting unit and approaching the wheel as the lifting unit operates;
a scanner body installed on the upper part of the base frame and surrounding the outer peripheral surface and a portion of the side surface of the wheel;
a probe module mounted on the scanner body and generating ultrasonic waves to the inspection area of the vehicle; and
A wheel rotation unit is installed on the upper part of the base frame, is disposed on both sides of the scanner body, and contacts the wheel to rotate the wheel.
The bogie includes a foreign matter removal unit that burns and removes foreign matter formed on the surface of the wheel by irradiating a laser toward the surface of the wheel.
In claim 1,
The scanner body is
a bottom portion facing the outer peripheral surface of the wheel;
side portions disposed on both sides of the bottom portion and facing the sides of the wheel; and
An ultrasonic inspection device for railway vehicle maintenance, comprising a movable part that connects the side part and the bottom part and moves the side part closer to or away from the side of the wheel.
In claim 2,
An ultrasonic inspection device for railway vehicle maintenance, characterized in that probe modules are installed on the bottom and side surfaces, respectively.
In claim 2,
The side part
An ultrasonic flaw detection device for railway vehicle maintenance, characterized in that it is provided with an encoder that detects the rotation of the wheels.
In claim 2,
The moving part
a side portion formed in an upright position on both sides of the bottom portion and having a through hole through which the probe module passes;
A movable block on which the probe module is mounted;
an actuator that provides power to move the movable block in a straight line; and
An ultrasonic inspection device for railway vehicle maintenance, comprising: a fixing bracket fixed to the side part in a state spaced apart from the side part and on which the actuator is installed.
In claim 1,
The probe module is
A probe that irradiates ultrasonic waves to an inspection area of the vehicle;
a guide bracket supporting the probe; and
An ultrasonic inspection device for railway vehicle maintenance, comprising: an adjustment housing that supports the guide bracket and is fixed to the scanner body.
In claim 1,
The cart is
It further includes a rust removal unit that contacts the surface of the wheel and removes rust formed on the surface of the wheel,
The rust removal unit
A post extending upward from the bogie;
A clamp that surrounds and tightens the outer peripheral surface of the post;
A supporter bound by the clamp and hinge and whose angle is adjusted; and
An ultrasonic inspection device for railway vehicle maintenance, comprising a scraper provided at an end of the supporter to remove rust formed on the surface of the wheel.
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