CN213689477U - Flaw detection device - Google Patents

Abstract

The utility model discloses a flaw detection device, include: the device comprises an installation frame, a translation plate, a transverse adjusting mechanism, a bearing frame, a sensor installation unit, a flaw detection sensor and a lifting mechanism. Bearing frame sets up on the installation frame, and translation board movably installs on bearing frame. One end of the transverse adjusting mechanism is arranged on the bearing frame, the other end of the transverse adjusting mechanism is connected to the translation plate, and the translation plate can move on the bearing frame along the transverse direction under the pushing of the transverse adjusting mechanism. The flaw detection sensor is arranged on the sensor mounting unit, and the sensor mounting unit is arranged on the translation plate in a hanging mode. One end of the lifting mechanism is installed on the translation plate, and the other end of the lifting mechanism is connected to the sensor installation unit. The utility model discloses can solve current device of detecting a flaw and visit the wheel and can not accurate malleation in the rail center, the bottom wave of detecting a flaw appears easily and loses to lead to the bad technical problem of testing effect.

Description

Flaw detection device

Technical Field

The utility model belongs to the technical field of the rail engineering machinery technique and specifically relates to be applied to the flaw detection device that railway engineering vehicle adopted automatic centering adjustment mode.

Background

Railway transportation safety is a significant social issue concerning socioeconomic development and passenger personal safety. The rail and the like are important infrastructures of the railway, with the development of domestic economy and the acceleration of urbanization process, the running density and the operation load of the rail are increased no matter whether the rail is a high-speed rail or a subway, and the ultrasonic rail flaw detection is one of the most effective and important means for finding the internal damage of the rail and reducing the rail breaking risk in the early stage and providing the train operation safety which are generally accepted in the world at present.

Because the irregularity of circuit and the snakelike motion of wheel pair, when the rail flaw detection car was detected a flaw the operation on the circuit, can produce the motion such as yaw, rocking to cause the malleation that the spy wheel can not be accurate at the rail center, the phenomenon is lost to the bottom wave of detecting a flaw appears, leads to the detection effect bad. Therefore, the automatic centering control of the probe wheel is a key core technology of the steel rail flaw detection vehicle, and how to control the position of the probe wheel to enable the ultrasonic waves to effectively enter the steel rail directly influences the flaw detection quality and effect. At present, automatic centering systems used on domestic large-scale steel rail flaw detection vehicles are imported into electromagnetic centering systems of foreign companies, are high in manufacturing cost and poor in centering effect, and manual control is adopted to adjust centering in most of time when flaw detection operation is caused. Therefore, it is necessary to develop a flaw detection apparatus equipped with a new probe wheel automatic centering mechanism.

In the prior art, the following technical solutions are mainly relevant to the present application:

prior art 1 is filed on 15/01 in 2014, and is published on 23/04 in 2014, and is a chinese invention filed on CN 103738357A. This application discloses a device of detecting a flaw based on bogie installation, the device of detecting a flaw is installed on the bogie, and the device of detecting a flaw specifically includes that left longeron, right longeron, frame constitute, crossbeam, unit fixing device constitute, the motor constitutes, spy wheel is constituteed and the connecting plate. The left longitudinal beam and the right longitudinal beam are mutually connected through a cross beam to form a carrier of the flaw detection device, and the two frame assemblies are oppositely arranged on the carrier along the direction of the cross beam. The unit fixing device assembly is movably arranged on the frame assembly through a connecting plate, and the probe wheel assembly is arranged on the unit fixing device assembly. The motor assembly is arranged between the frame assembly and the assembly consisting of the unit fixing device assembly and the connecting plate. The motor assembly driving unit fixing device assembly moves on the frame assembly along the direction of the cross beam. The device has the advantages of compact structure, strong adaptability, high efficiency and accuracy, is suitable for high-speed flaw detection operation of 0-80 km/h, and can fully meet the current requirements of high-density and high-speed running organization.

Prior art 2 is applied for 10/05/2016 and announced 23/11/2016, and is published as CN 205706703U. The utility model discloses an adopt rail of automatic centering mode to visit the car, this rail visits the car and includes: flaw detection vehicles, flaw detection systems and automatic centering systems; wherein, the flaw detection vehicle runs on the steel rail; the flaw detection system is arranged on the flaw detection vehicle and comprises a detection wheel used for detecting the flaw in the steel rail; the automatic centering system is arranged on the flaw detection vehicle and comprises an automatic centering sensor, an automatic centering control cabinet and an automatic centering driving motor; the automatic centering sensor is used for detecting the deviation between the probe wheel and the central line of the steel rail and sending a detection result to the automatic centering control cabinet; the automatic centering control cabinet is used for sending a control command to the automatic centering driving motor according to the detection result; and the automatic centering driving motor is used for adjusting the horizontal position of the probe wheel and correcting the deviation between the probe wheel and the central line of the steel rail.

However, the above prior art 1 and 2 both have the technical problem that the detection wheel cannot be accurately pressed in the center of the steel rail, and the flaw detection bottom wave is easily lost, thereby causing poor detection effect.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a flaw detection device to solve the spy wheel that current flaw detection device exists and can not accurately malleation in the rail center, the phenomenon is lost to the bottom wave of appearing detecting a flaw easily, thereby leads to the technical problem that the detection effect is bad.

In order to realize the above utility model purpose, the utility model particularly provides a technical implementation scheme of device of detecting a flaw, the device of detecting a flaw, include: the device comprises an installation frame, a translation plate, a transverse adjusting mechanism, a bearing frame, a sensor installation unit, a flaw detection sensor and a lifting mechanism. Bearing frame sets up on the installation frame, translation board movably installs on bearing frame. One end of the transverse adjusting mechanism is installed on the bearing frame, the other end of the transverse adjusting mechanism is connected to the translation plate, and the translation plate can move on the bearing frame along the transverse direction under the pushing of the transverse adjusting mechanism. The flaw detection sensor is arranged on the sensor mounting unit, and the sensor mounting unit is arranged on the translation plate in a hanging mode. One end of the lifting mechanism is installed on the translation plate, and the other end of the lifting mechanism is connected to the sensor installation unit.

Further, the flaw detection device also comprises a centering sensor for collecting the outline of the steel rail, and the centering sensor is installed on the translation plate or the sensor installation unit.

Further, the flaw detection device also comprises a centering control unit and a driving unit, wherein the centering control unit acquires position data of the flaw detection sensor on the steel rail through a centering sensor and sends a control quantity obtained through PID closed-loop control calculation to the driving unit. The driving unit outputs a driving signal to the transverse adjusting mechanism, and the transverse adjusting mechanism drives the flaw detection sensor to transversely move on the steel rail.

Furthermore, one end of the transverse adjusting mechanism is installed on the bearing frame through the installation seat, and the centering sensor is installed at the end part of the translation plate in a hanging mode through the centering support.

Furthermore, the mounting frame comprises longitudinal beams and cross beams, wherein the two longitudinal beams extending along the axial direction are arranged in parallel and opposite to each other along the transverse direction, and the two cross beams arranged in parallel and opposite to each other along the axial direction are connected between the two longitudinal beams.

Further, the flaw detection device is connected with the bogie through the installation frame, and the longitudinal beam comprises a rectangular beam, a spline bushing and a connecting arm. One end of the rectangular beam is connected with the spline bushing and then connected to the axle box of the bogie through the axle box end cover. And the other end of the rectangular beam is connected with the connecting arm and then connected to the axle box through the axle box end cover.

Furthermore, an elastic bushing is arranged at a mounting hole where the rectangular beam is connected with the cross beam.

Furthermore, the bearing frame is arranged on the cross beam through a connecting rod mechanism, one end of the connecting rod mechanism is hinged with the cross beam, and the other end of the connecting rod mechanism is hinged to the bearing frame. The horizontal position of the translation plate is adjusted by the stretching of the horizontal adjusting mechanism.

Furthermore, the bearing frame is arranged between the two cross beams through a connecting rod mechanism, and the bearing frame is positioned below the middle part of the translation plate. One flaw detection sensor is installed below the bearing frame in a hanging mode through the sensor installation unit, and the other flaw detection sensors are installed below two sides of the bearing frame in a hanging mode along the axial direction.

Furthermore, two ends of the translation guide rail are also provided with limiting blocks.

Furthermore, the flaw detection device also comprises an inclination angle adjusting mechanism, one end of the inclination angle adjusting mechanism is hinged with the bearing frame, the other end of the inclination angle adjusting mechanism is hinged to the mounting frame, and the included angle between the bearing frame and the horizontal plane of the steel rail is adjusted through the stretching and retracting of the inclination angle adjusting mechanism.

Further, the flaw detection sensor is installed below the translation plate in a hanging mode through a sensor installation unit, and the sensor installation unit comprises a sensor installation frame, a first lifting component and a second lifting component. The first lifting component is fixed below the translation plate, and the first lifting component and the second lifting component form a lifting moving pair. The sensor mounting frame is fixed on the second lifting component, and the flaw detection sensor is mounted on the lower portion of the sensor mounting frame in a hanging mode. One end of the lifting mechanism is connected to the sensor mounting frame, and the lifting mechanism drives the sensor mounting frame and the second lifting part to move relative to the first lifting part so as to lift and press the flaw detection sensor.

Through implementing the aforesaid the utility model provides a technical scheme of device of detecting a flaw has following beneficial effect:

(1) the utility model discloses the device of detecting a flaw, except satisfying the basic function of high-speed flaw detection, still possess the automatic centering function of the sensor of detecting a flaw, gather information such as rail web of rail through the centering sensor, then match standard rail web figure, calculate rail center and with the relative position relation of the sensor of detecting a flaw, control servo motor lateral drive adjustment sensor position of detecting a flaw at last, the deviation of sensor and rail central line of detecting a flaw is detected in the correction, fundamentally has solved the sensor of detecting a flaw that current device of detecting a flaw exists and can not mallet in rail center accurately, the phenomenon of losing of the bottom wave of detecting a flaw appears easily, thereby lead to the bad technical problem of detection effect;

(2) the utility model discloses the flaw detection device is based on laser rail profile measurement technique, combines high performance closed-loop control can realize that the closed loop position follows, can automatic identification standard rail type, effective discernment and filtering switch, splint etc. are the measuring error that non-standard rail type produced, improved the adaptability of flaw detection car to adverse circumstances circuit, can satisfy high-speed railway and existing line rail flaw detection car requirement of detecting a flaw, structural design retrencies rationally simultaneously, the stable performance, centering is effectual, the detectable rate of rail damage has greatly been improved, play very big promotion effect to the safety of railway operation;

(3) the utility model discloses the device of detecting a flaw adopts the sensor inclination adjustment mechanism of detecting a flaw, and this structure accessible motor drive mode adjusts the angle of detecting a flaw between sensor and the rail cross section, satisfies the change of different circuit track rail base slopes to reach the purpose of adjusting the sensor angle of detecting a flaw in the real-time car, can solve the inconvenient problem in the manual regulation sensor inclination of detecting a flaw under the car well.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, from which other embodiments can be derived by a person skilled in the art without inventive effort.

FIG. 1 is a schematic view of the mounting structure of a specific embodiment of the flaw detection apparatus of the present invention;

FIG. 2 is a schematic structural diagram of a specific embodiment of the flaw detection apparatus of the present invention;

FIG. 3 is a schematic view of a partial structure of a flaw detector according to an embodiment of the present invention;

fig. 4 is a schematic structural view of a longitudinal beam in an embodiment of the flaw detection apparatus of the present invention;

fig. 5 is a schematic structural view of a transverse centering adjustment mechanism in an embodiment of the flaw detection apparatus of the present invention;

fig. 6 is a schematic structural view of a sensor mounting unit in an embodiment of the flaw detection apparatus of the present invention;

fig. 7 is a partial structural view of a sensor mounting unit in an embodiment of the flaw detection apparatus of the present invention;

FIG. 8 is a schematic structural view of another embodiment of the flaw detector of the present invention;

FIG. 9 is a schematic structural view of an inclination angle adjusting mechanism in another embodiment of the flaw detection apparatus of the present invention;

FIG. 10 is a schematic view showing a partial structure of an inclination angle adjusting mechanism according to another embodiment of the flaw detection apparatus of the present invention;

FIG. 11 is a control schematic block diagram of an embodiment of the flaw detection apparatus of the present invention;

in the figure: 1-mounting frame, 2-longitudinal beam, 3-transverse beam, 4-translational plate, 5-lateral adjustment mechanism, 6-bearing frame, 7-sensor mounting unit, 8-flaw detection sensor, 9-centering sensor, 10-lifting mechanism, 11-stopper, 12-rectangular beam, 13-spline bushing, 14-connecting arm, 15-elastic bushing, 16-axle box end cover, 17-translational guide rail, 18-slider, 19-centering bracket, 20-sensor mounting bracket, 21-first lifting component, 22-second lifting component, 23-fixing component, 24-locking block, 25-connecting component, 26-hooking mechanism, 27-tilt angle adjustment mechanism, 28-link mechanism, 29-mounting seat, 30-longitudinal clamping plates, 31-mounting supports, 32-rotating shafts, 100-flaw detection devices, 200-actuators, 300-control units, 400-driving units, 500-axle boxes, 600-bogies and 700-steel rails.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention. It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or be indirectly disposed on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, refer to an orientation or positional relationship illustrated in the drawings for convenience in describing the present application and to simplify description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "plurality" or "a plurality" means two or more unless specifically limited otherwise.

It should be understood that the structures, ratios, sizes, and the like shown in the drawings are only used for matching the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present application can be implemented, so that the present application has no technical significance.

Referring to fig. 1 to 11, a specific embodiment of the flaw detection device of the present invention is shown, and the present invention will be further described with reference to the drawings and the specific embodiment.

Example 1

As shown in fig. 1, an embodiment of a flaw detection apparatus 100 is installed under the body of a rail flaw detection vehicle, and is used as a carrying and movement actuator of a flaw detection sensor in an ultrasonic flaw detection system for performing flaw detection work inside a rail 700. In this embodiment, the flaw detector 100 is further installed below a bogie 600 for detection of a large rail flaw detection vehicle, and is self-operated on a rail 700 with the vehicle. As shown in fig. 2, the flaw detection apparatus 100 specifically includes: the device comprises a mounting frame 1, a translation plate 4, a transverse adjusting mechanism 5, a bearing frame 6, a sensor mounting unit 7, a flaw detection sensor 8, a centering sensor 9 and a lifting mechanism 10. The flaw detection device 100 is connected with the bogie 600 through the mounting frame 1, the mounting frame 1 mainly comprises a cross beam assembly and a longitudinal beam assembly, the whole flaw detection device 100 is supported and connected and fixed with the bogie 600, and the whole flaw detection device 100 is connected with the bogie 600 of the steel rail flaw detection vehicle body through an end cover of the longitudinal beam assembly. A carrying frame 6 is disposed on the mounting frame 1, and the translation plate 4 extends along a rail direction (shown as L in fig. 2, 3, 5, 6, 7 and 8) and is movably mounted on the carrying frame 6. The transverse adjusting mechanism 5 is mounted on the carrying frame 6 at one end and connected to the translating plate 4 at the other end, and the translating plate 4 can move on the carrying frame 6 along the transverse direction (the direction shown as W in fig. 2, 3, 5, 7 and 10) under the pushing of the transverse adjusting mechanism 5. The flaw detection sensor 8 is installed on the sensor installation unit 7, the sensor installation unit 7 is installed on the translation plate 4 in a hanging mode, and the centering sensor 9 is installed on the translation plate 4 or the sensor installation unit 7 in a hanging mode. One end of the lifting mechanism 10 is fixedly mounted to the translation plate 4, and the other end is connected to the sensor mounting unit 7. The device comprises a sensor mounting unit 7 and a centering sensor (namely a laser centering device) 9, wherein the sensor mounting unit and the centering sensor (namely the laser centering device) 9 are fixedly suspended at a translation plate 4 on a rectangular bearing frame 6, the centering sensor 9 acquires the outline of the rail web of a steel rail 700 and feeds the outline back to a centering control unit in a vehicle, finally, an instruction is generated to control the centering adjustment of a flaw detection sensor 8 through a transverse adjusting mechanism 5 (which can be specifically adopted but not limited to a servo motor), and the vertical lifting and the pressing of the flaw detection sensor 8 are realized through a lifting mechanism 10 (which can be specifically adopted but not limited.

The mounting frame 1 further comprises longitudinal beams 2 and transverse beams 3, two longitudinal beams 2 extending in the axial direction being arranged parallel to and opposite each other in the transverse direction, and two transverse beams 3 arranged parallel to and opposite each other in the axial direction being connected between the two longitudinal beams 2. As shown in fig. 4, the longitudinal beam 2 further includes a rectangular beam 12, a spline bushing 13, and a connecting arm 14, wherein one end of the rectangular beam 12 is connected to the axle housing 500 through the axle housing end cover 16 after being connected to the spline bushing 13, and the other end of the rectangular beam 12 is connected to the connecting arm 14 and then connected to the axle housing 500 through the axle housing end cover 16. The connection structure of the axle box end cover 16 and the rectangular beam 12 is provided with a plurality of degrees of freedom to adapt to the physical change of the position between the steering bogie wheels in the operation of the steel rail flaw detection vehicle and ensure the overall safety and stability of the flaw detection device 100. The connecting shaft of the axle box end cover 16 is provided with a ball bearing, so that the longitudinal beam 2 and the axle box end cover 16 have certain rotation and deflection allowance. The spline bushing 13 is provided with a sliding block, so that longitudinal short-distance sliding adjustment caused by distance change of the wheel pair can be realized. The elastic bushing 15 is embedded and arranged at the mounting (bolt) hole of the rectangular beam 12 connected with the cross beam 3, so that pure rigid connection can be converted into flexible connection, and adverse effects caused by vibration can be reduced. In addition, the axle box end cover 16 is also designed in an open mode, and axle flaw detection can be carried out without disassembling the end cover.

As shown in fig. 9 and 10, the carrying frame 6 is further mounted on the cross beam 3 through a link mechanism 28, one end of the link mechanism 28 is hinged with the cross beam 3, and the other end is hinged with the carrying frame 6. The bearing frame 6 is transversely provided with a translation guide rail 17, and two ends of the translation guide rail 17 are also provided with limiting blocks 11, as shown in fig. 5. The lower part of the translation plate 4 is provided with a slide block 18, the slide block 18 and the translation guide rail 17 form a moving pair, and the transverse position of the translation plate 4 is adjusted by the extension and contraction of the transverse adjusting mechanism 5. As a typical embodiment of the present invention, the carrying frame 6 is installed between the two beams 3 through a link mechanism 28, and the carrying frame 6 is located below the middle portion of the translation plate 4. One of the flaw detection sensors 8 is installed under the carrying frame 6 in a suspended manner by the sensor installation unit 7, and the other flaw detection sensors 8 are installed under both sides of the carrying frame 6 in an axially suspended manner.

As shown in fig. 6 and 7, the flaw detection sensor 8 is mounted under the translation plate 4 by suspending the sensor mounting unit 7, and the sensor mounting unit 7 further includes a sensor mounting bracket 20, a first elevating member 21, a second elevating member 22, a fixing member 23, a locking block 24, and a connecting member 25. In this embodiment, the first lifting member 21 is specifically a lifting guide pillar structure, the second lifting member 22 is specifically a lifting guide sleeve structure, and the first fixing member 23 is specifically a fixing guide pillar structure. The first elevation member 21 and the fixing member 23 are parallel to each other and vertically fixed below the translation plate 4, and the connection member 25 is connected between the first elevation member 21 and the fixing member 23. The second elevating member 22 is sleeved outside the first elevating member 21, and the sensor mounting bracket 20 is fixed on the second elevating member 22. The flaw detection sensor 8 is fixed and hung on the lower part of the sensor mounting frame 20 through a locking block 24, and one end of the lifting mechanism 10 is connected to the sensor mounting frame 20. The sensor mounting frame 20 and the second lifting member 22 are driven by the lifting mechanism 10 to slide on the first lifting member 21, so that the flaw detection sensor 8 is lifted and pressed down in the vertical direction (the direction indicated by H in fig. 6 and 7).

As shown in fig. 5, one end of the lateral adjustment mechanism 5 is mounted to the carriage frame 6 via a mounting seat 29. As shown in fig. 3, the centering sensor 9 is suspended and mounted at the end of the translation plate 4 through the centering bracket 19, so that the adjustment of certain longitudinal and vertical displacement and the angle adjustment of the cross section can be realized, and the requirement that the laser line covers the inner side of the steel rail 700 and the visual angle of the rail surface can be met. As shown in fig. 7, the sensor mounting unit 7 further includes a hooking mechanism 26, one end of the hooking mechanism 26 is fixedly connected to the lower portion of the translation plate 4, and the other end of the hooking mechanism 26 is lockable with the sensor mounting frame 20, so as to unlock and couple the flaw detection sensor 8.

As shown in fig. 11, the flaw detection apparatus 100 further includes a centering control unit 300 and a driving unit 400, and the centering sensor 9 transmits real-time position data of the flaw detection sensor 8 on the steel rail 700 to the centering control unit 300 by using a high-precision rail displacement measurement technique, and the centering control unit 300 performs PID (Proportional Integral Derivative) closed-loop control calculation and transmits a calculated control amount to the driving unit 400. The driving unit 400 drives the transverse adjusting mechanism 5, and then the transverse adjusting mechanism 5 drives the flaw detection sensor 8 to transversely move on the steel rail 700, so that the deviation between the flaw detection sensor 8 and the central position of the steel rail 700 is reduced, and closed-loop position following is completed, so that the flaw detection device 100 can meet the requirements of flaw detection of high-speed rails and existing-line steel rails at the same time.

The flaw detection device 100 has the basic function of high-speed flaw detection, and also has the automatic centering function of the flaw detection sensor 8, acquires information such as rail web of a steel rail through a laser emitting device and a camera in the centering sensor 9, then matches a standard rail web graph through a centering processor (namely, a centering control unit 300), calculates the center of the steel rail 700 and the relative position relation with the flaw detection sensor 8, finally controls a servo motor to transversely drive and adjust the position of the flaw detection sensor 8 through an instruction, corrects the deviation between the flaw detection sensor 8 and the central line of the steel rail 700, and fundamentally solves the technical problems that the flaw detection sensor 8 in the conventional flaw detection device 100 cannot accurately positively press the center of the steel rail 700, the flaw detection bottom wave is easy to lose, and the detection effect is poor.

In the present embodiment, the flaw detection sensors 8 are described by taking a wheel-type probe wheel as an example, and others are as follows: other flaw detection sensor structures such as a sliding shoe type flaw detection sensor structure are alternatives. The embodiment of the mounting structure of the flaw detection device 100 is described by taking a bogie mounting manner as an example, and other structures which are mounted and connected with a rail flaw detection vehicle are all alternatives.

The flaw detection device 100 described in this embodiment adopts an automatic centering adjustment structure, can solve the technical problem that the existing flaw detection vehicle detects poor automatic centering, and can realize safe and reliable high-speed flaw detection of the steel rail flaw detection vehicle. The flaw detection device 100 is based on a laser rail profile measurement technology, can realize closed-loop position following by combining high-performance closed-loop control, can automatically identify a standard rail type, effectively identify and filter measurement errors generated by non-standard rail types such as turnouts and clamping plates, and keeps the control stability. The flaw detection device 100 combines comprehensive judgment of characteristic points of each area of a rail outline, can effectively output the condition that a steel rail is partially covered by sand and snow, improves the adaptability of the flaw detection vehicle to severe environment lines, can meet the flaw detection requirements of high-speed rail and existing line steel rail flaw detection vehicles, is simple and reasonable in structural design, stable in performance and good in centering effect, greatly improves the detection rate of the damage of the steel rail, and plays a great role in promoting the safety of railway operation.

Example 2

In the embodiment 1, the carrying frame 6 is further mounted on the cross beam 3 through a link mechanism 28, one end of the link mechanism 28 is hinged with the cross beam 3, and the other end is hinged with the carrying frame 6, as shown in fig. 9. As shown in fig. 8, based on embodiment 1, the flaw detection apparatus 100 further includes an inclination adjusting mechanism 27 (a motor or an electric cylinder may be further used, the angle adjustment precision may be set to 0.01mm, and the angle adjustment range may be limited to-3 ° to-6 °), wherein one end of the inclination adjusting mechanism 27 is hinged to the carrying frame 6, and the other end is hinged to the mounting frame 1. As a typical embodiment of the present invention, the two ends of the two beams 3 are connected to each other through the vertical clamping plate 30, one end of the tilt angle adjusting mechanism 27 is hinged to the bearing frame 6, the other end of the tilt angle adjusting mechanism 27 is hinged to the vertical clamping plate 30, and the telescopic link mechanism 28 of the tilt angle adjusting mechanism 27 drives the deflection to adjust the included angle between the bearing frame 6 and the horizontal plane of the steel rail 700, so as to finally achieve the purpose of adjusting the angle of the flaw detection sensor 8. As shown in fig. 10, the tilt angle adjusting mechanism 27 has one end hinged to a mounting seat 31 at the bottom of the carrying frame 6, and the other end hinged to the mounting frame 1 through a rotating shaft 32.

In the present embodiment, the tilt angle adjusting mechanism 27 has been described by taking as an example the angle adjusting manner of the single-side integrated probe wheel (i.e. the flaw detection sensor 8) in which the link mechanism 28 performs yaw in cooperation with electric angle adjustment, and the other examples are as follows: the adjusting device which adopts the angle adjustment of the single flaw detection sensor 8, the pneumatic angle adjustment and the like to realize the purpose of adjusting the angle between the flaw detection sensor 8 and the rail surface of the steel rail 700 is an alternative scheme.

The flaw detection device 100 described in this embodiment adopts the inclination angle adjustment mechanism of the flaw detection sensor, and the structure can adjust the angle between the flaw detection sensor and the cross section of the steel rail 700 in a motor driving manner, so as to meet the change of the rail base slope of different line rails, thereby achieving the purpose of adjusting the angle of the flaw detection sensor in a real-time vehicle, and well solving the problem of inconvenience in manually adjusting the inclination angle of the flaw detection sensor under the vehicle.

In the above embodiments 1 and 2, the first lifting member 21 and the second lifting member 22 may further adopt alternative structures such as a combination of a slide block and a guide rail, a combination of a gear and a rack, and the like to realize the function of a moving pair, in addition to the combination of a guide pillar and a guide sleeve. The combination of the guide rail and the slide block (i.e. the translation guide rail 17 and the slide block 18) can further adopt alternative structures such as guide pillar and guide sleeve combination, gear and rack combination and the like to realize the function of a sliding pair. The transverse adjusting mechanism 5, the lifting mechanism 10 and the tilt angle adjusting mechanism 27 may be specifically driven by an oil cylinder, an air cylinder, an electric cylinder or a motor.

Through implementing the utility model discloses the technical scheme of the device of detecting a flaw that concrete embodiment described can produce following technological effect:

(1) the utility model discloses the detection device of embodiment description, except satisfying the basic function of high-speed flaw detection, still possess the automatic centering function of the sensor of detecting a flaw, gather information such as rail web of rail through the centering sensor, then match standard rail web figure, calculate rail center and with the relative position relation of the sensor of detecting a flaw, control servo motor lateral drive adjustment detection sensor position at last, the deviation of sensor and rail central line is detected a flaw in the correction, fundamentally has solved the sensor of detecting a flaw that current detection device exists and can not malleation in the rail center accurately, the phenomenon is lost to the bottom wave of detecting a flaw easily appears, thereby lead to the bad technical problem of detection effect;

(2) the flaw detection device described in the specific embodiment of the utility model is based on the laser rail profile measurement technology, can realize closed-loop position following by combining high-performance closed-loop control, can automatically identify standard rail types, effectively identify and filter measurement errors generated by non-standard rail types such as turnout points and clamping plates, improves the adaptability of the flaw detection vehicle to severe environment lines, can meet the flaw detection requirements of high-speed rail and existing railway rail flaw detection vehicles, and has the advantages of simple and reasonable structural design, stable performance, good centering effect, greatly improved detection rate of rail damage, and great promotion effect on the safety of railway operation;

(3) the utility model discloses the device of detecting a flaw that concrete embodiment described adopts the sensor inclination adjustment mechanism of detecting a flaw, and this structure accessible motor drive mode adjusts the angle between sensor and the rail cross section of detecting a flaw, satisfies the change of different circuit track rail base slopes to reach the purpose of adjusting the sensor angle of detecting a flaw in the real-time car, can solve the inconvenient problem in the manual regulation sensor inclination under the car well.

The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in any way. Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention. Those skilled in the art can make numerous changes and modifications to the disclosed embodiments, or modify equivalent embodiments, without departing from the spirit and scope of the invention, using the methods and techniques disclosed above. Therefore, any simple modification, equivalent replacement, equivalent change and modification made to the above embodiments by the technical entity of the present invention all still belong to the protection scope of the technical solution of the present invention.

Claims (12)

1. A flaw detection apparatus, comprising: the device comprises an installation frame (1), a translation plate (4), a transverse adjusting mechanism (5), a bearing frame (6), a sensor installation unit (7), a flaw detection sensor (8) and a lifting mechanism (10); the bearing frame (6) is arranged on the mounting frame (1), and the translation plate (4) is movably arranged on the bearing frame (6); one end of the transverse adjusting mechanism (5) is installed on the bearing frame (6), the other end of the transverse adjusting mechanism is connected to the translation plate (4), and the translation plate (4) can move transversely on the bearing frame (6) under the pushing of the transverse adjusting mechanism (5); the flaw detection sensor (8) is arranged on a sensor mounting unit (7), and the sensor mounting unit (7) is arranged on the translation plate (4) in a hanging manner; one end of the lifting mechanism (10) is installed on the translation plate (4), and the other end of the lifting mechanism is connected to the sensor installation unit (7).

2. The flaw detection apparatus according to claim 1, characterized in that: the flaw detection device (100) further comprises a centering sensor (9) used for collecting the outline of the steel rail (700), and the centering sensor (9) is installed on the translation plate (4) or the sensor installation unit (7).

3. The flaw detection apparatus according to claim 2, characterized in that: the flaw detection device (100) further comprises a centering control unit (300) and a driving unit (400), wherein the centering control unit (300) acquires position data of the flaw detection sensor (8) on the steel rail (700) through a centering sensor (9), and sends a control quantity obtained through PID closed-loop control calculation to the driving unit (400); the driving unit (400) outputs a driving signal to the transverse adjusting mechanism (5), and the transverse adjusting mechanism (5) drives the flaw detection sensor (8) to transversely move on the steel rail (700).

4. The flaw detection apparatus according to claim 3, characterized in that: one end of the transverse adjusting mechanism (5) is installed on the bearing frame (6) through an installation seat (37), and the centering sensor (9) is installed at the end part of the translation plate (4) in a suspension mode through a centering support (19).

5. The flaw detection apparatus according to any one of claims 1 to 4, characterized in that: the mounting frame (1) comprises longitudinal beams (2) and cross beams (3), wherein the two longitudinal beams (2) extending along the axial direction are arranged in parallel and opposite to each other along the transverse direction, and the two cross beams (3) arranged in parallel and opposite to each other along the axial direction are connected between the two longitudinal beams (2).

6. The flaw detection apparatus according to claim 5, characterized in that: the flaw detection device (100) is connected with a bogie (600) through a mounting frame (1), and the longitudinal beam (2) comprises a rectangular beam (12), a spline bushing (13) and a connecting arm (14); one end of the rectangular beam (12) is connected with a spline bushing (13) and then connected to an axle box (500) of the bogie (600) through an axle box end cover (16); the other end of the rectangular beam (12) is connected with a connecting arm (14) and then is connected to the axle box (500) through an axle box end cover (16).

7. The flaw detection apparatus according to claim 6, characterized in that: and an elastic bushing (15) is arranged at a mounting hole for connecting the rectangular beam (12) and the cross beam (3).

8. The flaw detection apparatus according to claim 1 or 2 or 3 or 4 or 6 or 7, characterized in that: the bearing frame (6) is arranged on the cross beam (3) through a link mechanism (28), one end of the link mechanism (28) is hinged with the cross beam (3), and the other end of the link mechanism is hinged to the bearing frame (6); the horizontal adjusting mechanism is characterized in that a translation guide rail (17) is transversely arranged on the bearing frame (6), a sliding block (18) is arranged at the lower part of the translation plate (4), the sliding block (18) and the translation guide rail (17) form a moving pair, and the transverse position of the translation plate (4) is adjusted through the extension and retraction of the transverse adjusting mechanism (5).

9. The flaw detection apparatus according to claim 8, characterized in that: the bearing frame (6) is arranged between the two cross beams (3) through a connecting rod mechanism (28), and the bearing frame (6) is positioned below the middle part of the translation plate (4); one flaw detection sensor (8) is installed below the bearing frame (6) in a hanging mode through a sensor installation unit (7), and the other flaw detection sensors (8) are installed below two sides of the bearing frame (6) in a hanging mode along the axial direction.

10. The flaw detection apparatus according to claim 9, characterized in that: and two ends of the translation guide rail (17) are also provided with limiting blocks (11).

11. The flaw detection apparatus according to claim 1 or 2 or 3 or 4 or 6 or 7 or 9 or 10, characterized in that: the flaw detection device (100) further comprises an inclination angle adjusting mechanism (27), one end of the inclination angle adjusting mechanism (27) is hinged to the bearing frame (6), the other end of the inclination angle adjusting mechanism is hinged to the installation frame (1), and the included angle between the bearing frame (6) and the horizontal plane of the steel rail (700) is adjusted through stretching of the inclination angle adjusting mechanism (27).

12. The flaw detection apparatus according to claim 11, characterized in that: the flaw detection sensor (8) is mounted below the translation plate (4) in a suspension mode through a sensor mounting unit (7), and the sensor mounting unit (7) comprises a sensor mounting frame (20), a first lifting component (21) and a second lifting component (22); the first lifting component (21) is fixed below the translation plate (4), and the first lifting component (21) and the second lifting component (22) form a lifting moving pair; the sensor mounting rack (20) is fixed on the second lifting component (22), and the flaw detection sensor (8) is mounted at the lower part of the sensor mounting rack (20) in a hanging manner; one end of the lifting mechanism (10) is connected to the sensor mounting frame (20), and the lifting mechanism (10) drives the sensor mounting frame (20) and the second lifting part (22) to move relative to the first lifting part (21) so as to lift and press the flaw detection sensor (8).

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