CN112858488A

CN112858488A - Wheel type probe fixing system for vertical flaw scanning

Info

Publication number: CN112858488A
Application number: CN202010411655.3A
Authority: CN
Inventors: 章罕; 李保平; 姜伟
Original assignee: Hefei Chaoke Electronics Co ltd
Current assignee: Hefei Chaoke Electronics Co ltd
Priority date: 2019-11-27
Filing date: 2020-05-14
Publication date: 2021-05-28

Abstract

The invention provides a wheel type probe fixing system for scanning vertical damage, which comprises a fixing frame, a pair of traveling wheels and a water wheel seat, wherein at least three probes are arranged on the water wheel seat, the water wheel seat comprises at least one transmitting probe or at least one receiving probe, ultrasonic waves emitted by the transmitting probe can be received by one receiving probe after being reflected by the vertical damage in a track and the two mirror surfaces of the bottom surface of the track, and a plurality of probes on a probe bracket are matched to scan vertical damage at a plurality of heights in a flaw detection area. The wheel type probe fixing system for vertical flaw scanning provided by the invention has the advantages that: the walking wheel can keep laminating with the track automatically under side shield and reset spring's effect, further ensures the probe to keep at the track center through the effect of motor, has realized sweeping the interior whole height range's of region of detecting a flaw continuous through the cooperation of a plurality of probes and has looked into convenient to use.

Description

Wheel type probe fixing system for vertical flaw scanning

Technical Field

The invention relates to the technical field of rail flaw detection, in particular to a wheel type probe specifying system for vertical flaw scanning.

Background

In the welding process of the rail, defects such as looseness, slag inclusion and the like exist in the welding process due to the quality problems of unstable welding equipment, improper process parameter selection, rail base metal and the like; in order to ensure the driving safety, the defects must be detected early, such as the shape of a plane, such as micro-cracks, gray spots, unwelded parts and the like.

The current flaw detection mainly uses an ultrasonic probe, and because the medium in the track is uniform, the ultrasonic wave can generate mirror reflection after encountering the flaw; by utilizing the principle, in chinese patent application CN206114598U, a bracket capable of mounting a wheel type probe is disclosed, wherein a plurality of ultrasonic probes with different angles are mounted in a water wheel, and when an ultrasonic signal of a probe encounters a damage perpendicular to a propagation direction, a mirror reflection occurs to return the ultrasonic wave along a transmission path to be received by the transmission probe.

In addition, the wheel type probe bracket utilizes the spring arranged on the shaft, and the flange of the steel rail travelling wheel is always abutted against the inner side of the steel rail under the acting force of the spring, so that the steel rail travelling wheel is ensured to change along with the change of the rail gauge of the steel rail, the probe is always kept on the central line of the steel rail, the aim of accurately detecting the condition of the steel rail is fulfilled, and the smooth operation of the flaw detection vehicle bracket on the steel rail is ensured.

However, for the

flaws

30 and 31 shown in fig. 1, since the flaw bottom surface is perpendicular to the rail bottom surface, and the ultrasonic signals obliquely transmitted from the upper surface of the rail at any angle are subjected to mirror reflection when encountering the vertical flaw, the ultrasonic waves cannot return to the transmitting probe as they are, and if the rail has a vertical flaw, the conventional flaw detection method cannot detect the flaw, so that the rail cannot be replaced or repaired in time, and the running of the train has a serious safety risk.

Chinese patent application CN208721616U, CN207552826U, CN206281846U disclose a tandem scanning frame with similar principle, referring to fig. 1, two transmitting probes and receiving probes which are synchronously close to or far from the center point of the scanning frame are arranged on the scanning frame, ultrasonic signals are sent out by the transmitting probes, if vertical damage is encountered, the vertical damage and the bottom surface are reflected twice to the receiving probes, and damage detection in the whole vertical plane of the current scanning position can be realized by manually or automatically adjusting the relative positions of the transmitting probes and the receiving probes.

However, as described in the foregoing working principle, the scanning frame structure provided in the foregoing application can only achieve full coverage detection within a certain height interval by manually adjusting a specific position, and this method is time-consuming and labor-consuming, and most flaw detection vehicles are currently used for rapid scanning.

Disclosure of Invention

The invention aims to provide a wheel type probe fixing system capable of simultaneously carrying out flaw detection on a plurality of heights in a rail flaw detection area, so as to solve the problem that the prior art cannot simultaneously carry out flaw detection on vertical flaws at more than one height position.

The invention solves the technical problems through the following technical scheme:

a wheel type probe fixing system for vertical injury scanning comprises a fixed frame, a pair of walking wheels and a water wheel seat, wherein the walking wheels are mounted at the lower end of the fixed frame and support the fixed frame to walk along a track; be provided with at least three probe on the waterwheel seat, wherein including at least one transmitting probe or at least one receiving probe, transmitting probe and receiving probe distribute in at least one waterwheel, the ultrasonic wave that transmitting probe sent can be received by a receiving probe after the inside perpendicular injury of track and the two mirror reflection of track bottom surface, a plurality of probe cooperations on the probe support can scan the perpendicular injury of a plurality of heights in the flaw detection region.

This application uses less probe to realize carrying out the purpose that detects simultaneously to a plurality of highly in the area of detecting a flaw through the compound mode that a receiving probe received the reflection signal of a plurality of transmitting probes and a transmitting probe corresponds a plurality of receiving probes, can follow the flaw detection car through fixing whole fixed system on the flaw detection car and realize sweeping the continuous of a plurality of heights in the area of detecting a flaw, has filled prior art's blank.

Preferably, fixed frame is including arranging the interior backup pad and the outer backup pad of track both sides in separately and connecting the walking wheel slide bar of interior, outer backup pad, the pivot both ends of walking wheel are fixed with by spacing cover establish the otic placode on the walking wheel slide bar, and the walking wheel sets up between two otic placodes.

Preferably, one end of the inner side of the travelling wheel is provided with a side baffle which protrudes out of the wheel body and is abutted and limited with the inner side surface of the track, and the travelling wheel sliding rod is provided with a return spring which is limited between an ear plate and an inner support plate on the inner side of the travelling wheel; still be provided with the support slide bar of two piece at least fixed connection inside and outside backup pad between inside and outside backup pad, the cover is equipped with the water wheel support of being connected with the water wheel seat on the support slide bar, fixedly connected with reinforcing plate on the otic placode of walking wheel homonymy, be fixed with a motor on the reinforcing plate, the power end of motor with water wheel support fixed connection.

Preferably, looking along perpendicular orbital direction, water wheel seat and water wheel support all roughly are the rectangle structure, fixed through-hole has been seted up respectively at both ends around the advancing direction to water wheel seat, water wheel support is provided with the hanger plate with fixed through-hole complex down extending respectively along the both ends of advancing direction.

Preferably, the power end of the motor is hinged and fixed with the water wheel support, the water wheel seat is provided with a hinge frame extending upwards along any side edge of the advancing direction, the side edge of the water wheel support opposite to the hinge frame is hinged with a second motor, and the power end of the second motor is hinged and matched with the hinge frame; the fixed through hole is hinged and matched with the hanging plate; two articulated shafts of second motor, the articulated shaft of motor power end and hanger plate and the articulated shaft of fixed through-hole all are parallel with walking wheel advancing direction.

Preferably, the inner ear plates of the travelling wheels at the two ends are respectively provided with pear heads which can be lapped on the surface of the track in a front-back extending manner in the travelling direction; a brush and a spray head which act on the surface of the track are arranged between the pear head of the front travelling wheel and the inner side ear plate where the pear head is positioned.

Preferably, the transmitting direction of the transmitting probe is parallel to the receiving direction of the receiving probe, and the receiving direction of the receiving probe is inclined to one side of the transmitting probe matched with the receiving probe; the transmitting probes and the receiving probes are linearly arranged on the probe bracket in a non-crossed manner, and the transmitting probes can be simultaneously used as the receiving probes.

Preferably, the flaw detection area is uniformly divided into a plurality of scanning heights with the interval h, and the relation between the number m of the receiving probes and the number n of the transmitting probes is expressed as

Wherein the int () operator represents the rounding, H₂Indicating the distance between the upper boundary of the flaw detection area of the track and the bottom surface of the track, H₁The distance between the lower boundary of the rail flaw detection area and the bottom surface of the rail is shown, and the height of the flaw detection area is H₂-H₁。

Preferably, all the probes are numbered sequentially starting from the first transmitting probe, the distance between adjacent probes is:

wherein l_iThe distance between the ith probe and the (i-1) th probe is represented, and alpha represents the included angle between the emission path and the vertical plane; wherein, alpha is [38.65 DEG, 45 DEG ]]、h∈[8,12]。

Preferably, the water wheel seat comprises at least one large water wheel and at least one small water wheel, a plurality of transmitting probes are fixed in the large water wheel, and a receiving probe is fixed in the small water wheel.

The wheel type probe fixing system for vertical flaw scanning provided by the invention has the advantages that: the travelling wheels can be automatically attached to the track under the action of the side baffle and the return spring, the probe is further ensured to be kept at the center of the track under the action of the motor, and the connecting positions between the probe and the travelling wheels are fixed in a hinged mode, so that the degree of freedom of the probe is ensured, and the probe and the track can be conveniently and synchronously inclined; the continuous scanning of the whole height range in the flaw detection area is realized through the cooperation of a plurality of probes, and the use is convenient.

Drawings

FIG. 1 is a functional block diagram of the background art to which the present invention is applied;

FIG. 2 is a schematic diagram of a wheeled probe mounting system for vertical flaw scanning according to an embodiment of the present invention in cooperation with a rail;

FIG. 3 is a schematic view of a wheel-type probe fixing system walking wheel and a water wheel seat matched for vertical injury scanning according to an embodiment of the invention;

FIG. 4 is a schematic view of a wheeled probe mount system for vertical lesion scanning provided by an embodiment of the present invention;

FIG. 5 is a schematic diagram of a rail vertical flaw detection system for two transmitting probes according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of a three-shot orbital vertical flaw detection system provided by an embodiment of the present invention;

FIG. 7 is a schematic diagram of a four-shot orbital vertical flaw detection system according to an embodiment of the present invention;

fig. 8 is a schematic diagram of a track vertical flaw detection system in the case where the scanning height in fig. 2 is increased.

Detailed Description

In order that the objects, technical solutions and advantages of the present invention will become more apparent, the present invention will be further described in detail with reference to the accompanying drawings in conjunction with the following specific embodiments.

Referring to fig. 2, the present embodiment provides a wheel type probe fixing system for vertical lesion scanning, comprising a fixing frame 08, a pair of traveling wheels 06 and a water wheel mount 09, the traveling wheels 06 are arranged at the lower end of the fixed frame 08 to support the fixed frame 08 to travel along a track, the fixed frame 08 is fixed on a track flaw detection vehicle (not shown), the water wheel seat 09 follows the traveling wheels 06 to travel along the track, the water wheels on the water wheel seat 09 are tightly pressed on the surface of the track 067, at least three probes arranged along the traveling direction of the traveling wheels are arranged on the water wheel seat 09, wherein, the device comprises at least one transmitting probe or at least one receiving probe, the transmitting probe and the receiving probe are distributed in at least one water wheel, ultrasonic waves emitted by the transmitting probe can be received by a receiving probe after being subjected to vertical damage in the track 067 and two-time mirror reflection on the bottom surface of the track 067, and a plurality of probes on the probe bracket are matched to scan vertical injuries at a plurality of heights in an inspection area.

This application realizes simultaneously detecting a plurality of heights through the combination of a plurality of transmitting probe and receiving probe, the probe is fixed in the water wheels, can follow the flaw detection car through fixing whole fixed system on the flaw detection car and realize the continuous scanning of a plurality of heights in the area of detecting a flaw, when specifically using, technical staff in the art can be according to the CN208721616U that mentions in the background art, CN207552826U, the principle disclosed in applications such as CN206281846U, adopt the probe arrangement mode that fig. 1 shows, just set up the transmitting probe and the receiving probe that correspond quantity and rationally set up the distance between two probes of every group when needing to detect a plurality of heights, can be convenient realization to the scanning of a plurality of heights.

The fixed frame 08 comprises an inner support plate 081 and an outer support plate 082 which are respectively arranged at two sides of a track, and a walking wheel slide rod 083 connected with the inner support plate 081 and the outer support plate 082, wherein lug plates 061 which are limited and sleeved on the walking wheel slide rod 083 are respectively fixed at two ends of a rotating shaft of the walking wheel 06, the walking wheel 06 is arranged between the two lug plates 061, one end of the inner side of the walking wheel 06 is provided with a side baffle 062 which protrudes out of a wheel body and is abutted and limited with the inner side surface of the track 067, and a return spring 084 which is limited between the lug plate 061 and the inner support plate 082 at the inner side of the walking wheel 06 is sleeved.

With reference to fig. 3 and 4, a support slide rod 085 for connecting an inner support plate 081 and an outer support plate 082 is further arranged on the fixed frame 08, a water wheel support 091 connected with a water wheel seat 09 is sleeved on the support slide rod 085, a reinforcing plate 063 is fixedly connected to an ear plate 061 on the same side of the front and rear traveling wheels 06, a motor 07 is fixed on the reinforcing plate 063, and a power end 071 of the motor 07 is fixedly connected with the water wheel support 091. When the traveling wheel 06 travels on the track 067, the side baffle 062 abuts against the side face of the track 067, the relative position of the traveling wheel 06 and the track 067 can be determined in sequence, the position of a water wheel on the surface of the track 067 can be adjusted by adjusting the extending length of the power end 071 of the motor 07, the probe is ensured to act on the middle position of the track 067, and after the side baffle 062 is worn after long-term use, the probe can still be kept at the middle position of the upper surface of the track 067 by increasing the extending length of the power end 071; and when the walking wheel 06 passes through the place where the track 067 turns, the distance between the two tracks 067 is increased, at the moment, the side baffle 062 of the walking wheel 06 can still be pressed on the side surface of the track 067 under the action of the return spring 084, and meanwhile, the motor 07 can also keep the probe at the center of the surface of the track 067, so that good contact between the probe and the track 067 is ensured.

Referring to fig. 4, when viewed in a direction perpendicular to the surface of the rail 067, the water wheel seat 09 and the water wheel support 091 are both substantially rectangular structures, fixing through holes are respectively formed at the front end and the rear end of the water wheel seat 09 in the traveling direction, and hanging plates 093 matched with the fixing through holes are respectively extended downward at the front end and the rear end of the water wheel support 091 in the traveling direction; thereby forming a structure that the water wheel seat 09 is suspended below the water wheel support 091.

Further, referring to fig. 3 and 4, the power end 071 of the motor 07 is hinged to the water wheel support 091, the water wheel seat 09 extends upward along either side of the traveling direction to form a hinge frame 094, the side of the water wheel support 091 opposite to the hinge frame 094 is hinged to a second motor 072, and the power end 073 of the second motor 072 is hinged to the hinge frame 094; the fixed through hole is hinged and matched with the hanging plate 093; two articulated shafts of second motor 072, the articulated shaft of motor power end 071 and hanger plate and fixed through hole 093's articulated shaft all are parallel with walking wheel 06 advancing direction to when track surface height is uneven, water wheel support 091, water wheel seat 09 all can take place to deflect, finally make water wheel follow track 067 surface slope and deflect, guarantee the contact effect.

The ear plates 061 on the inner sides of the traveling wheels 06 at the two ends respectively extend forwards and backwards along the traveling direction to form a pear head 064 capable of being lapped on the surface of the rail 067, when the pear head 064 passes through a fork and the like, the whole fixing system can be supported across the fork through the pear heads 064, the passing performance is improved, based on the above effects, when the traveling wheels 06 normally travel on the rail 067, the pear head 064 can have a gap with the surface of the rail 067, so that the abrasion is reduced, the specific shape of the pear head 064 is not strictly limited, and only the stable supporting force can be provided when the pear head 064 is in contact with the rail 067. Further, a brush 065 and a spray head 066 which are positioned in front of the traveling wheel 06 and act on the surface of the rail 067 are fixed on an ear plate 061 of the front traveling wheel 06, the rail 067 is cleaned to reduce abrasion on the surface of the water wheel, and when the water tank is used, the water tank is placed on a flaw detection vehicle and is connected with the spray head 066 through a pipeline.

In order to further improve the stability of the fixing frame 08, in a preferred embodiment, a proper number of fixing rods 086 connecting the inner support plate 081 and the outer support plate 082 are further arranged on the fixing frame 08, and at least two connecting blocks 087 fixedly matched with the flaw detection vehicle are further fixed at the top end of the inner fixing plate 081, and the specific shape of the connecting blocks can be set according to needs.

Although the probe arrangement shown in fig. 1 can also be used for simultaneously and continuously scanning a plurality of heights, the probe arrangement is required to be large in number, and for the flaw detection height close to the surface of the track 067, the distance between the transmitting probe and the receiving probe is relatively long, so that the construction cost and complexity of the whole fixing system are increased.

Referring to fig. 5, the transmitting probe and the receiving probe are both arranged on the upper surface of the track, the probes are numbered by using arabic numbers in sequence, the ultrasonic signal transmitted by the transmitting probe 1 travels along the transmitting path a and encounters a vertical flaw at a certain height D in the flaw detection area, then mirror reflection occurs, the transmitting signal travels along the transmitting path B to the bottom surface of the track and again mirror reflection occurs, the reflected signal travels along the receiving path C and is received by the corresponding receiving probe 7, and the information such as the flaw position can be confirmed by analyzing the ultrasonic signal received by the receiving probe 7, so that the unqualified track can be replaced in time; on the basis, in fig. 5, a plurality of probes including the transmitting probe 2 and the receiving probes 3-10 are arranged for the transmitting probe 1 to receive the reflected signals of the transmitting probe which meets vertical damage at different heights, and the receiving probes 3-10 are arranged for the transmitting probe 2 to receive the reflected signals of the transmitting probe which meets vertical damage at a plurality of heights which are not covered by the transmitting probe 1, so that the number of required probes is reduced on the basis of ensuring that the scanning height covers the whole flaw detection area, and the length of the water wheel base 09 can be shortened.

As can be seen from the above description, the transmitting direction of the transmitting probe is parallel to the receiving direction of the receiving probe, and the receiving direction of the receiving probe is inclined to the side of the transmitting probe matched with the receiving probe, in order to simplify the system, reduce the number of probes and the length required for arranging the probes, the transmitting probe and the receiving probe are linearly arranged on the water wheel seat 09 without crossing, and the transmitting probe can also be used as the receiving probe to receive the reflected ultrasonic signal. In fig. 5, the ultrasonic signal emitted by the transmitting probe 1 is reflected by the vertical flaw at the bottom E of the flaw detection area and then reflected by the bottom surface to be received by the transmitting probe 2, and since there is no other transmitting probe before the transmitting probe 1, that is, the transmitting probe 1 cannot receive other ultrasonic signals, the transmitting probe 1 may not have the capability of receiving signals.

In fig. 5, if there is a vertical flaw at both the height D and the height E, the ultrasonic signal emitted from the transmitting probe 1 travels along the reflection path B after being reflected by the flaw at the height D, and the flaw at the height E cannot be effectively detected. With reference to fig. 5, 6 and 7, in the preferred embodiment, the flaw detection area is divided into a plurality of scanning heights, and it can be determined by those skilled in the art through the above statements and drawings that the receiving probe is uniquely corresponding to the receiving path and the reflection path, the flaw height at which the receiving probe can receive the reflection signal is the height at which the intersection point of the reflection path corresponding to the flaw detection area and each transmission path is located, and the consecutive detection heights are sequentially allocated to the plurality of transmission probes, so that when a certain position is blocked by other flaws, scanning can be performed at adjacent heights by ultrasonic signals of other transmission probes, thereby reducing the missing rate and improving the detection accuracy; based on this situation, those skilled in the art will not suggest that only one transmitting probe is provided when implementing the solution of the present application, but if the height of the flaw detection area is low, or if at least two detection systems with different transmitting angles are arranged on one flaw detection vehicle, the use of one transmitting probe can also effectively detect flaws.

Based on the requirement of complete scanning of all the scanning heights, each scanning height is preferably corresponding to a receiving probe capable of receiving vertical damage reflection signals or a transmitting probe capable of serving as a receiving probe. Based on the above, those skilled in the art should understand that damage detection can be performed by setting multiple receiving probes for each height, which cooperate with different transmitting probes, and although such setting would increase the cost of the system, the missing detection caused by damage to the probes can be reduced.

Since the present embodiment expects to sequentially allocate consecutive scanning heights to different transmitting probes, the number of damages detected on different scanning heights on the transmitting path of each transmitting probe is approximately the same, which is particularly obvious in fig. 7, the reflection paths of the

receiving probes

5 and 6 are all intersected with the transmitting paths of the transmitting

probes

1, 2, 3 and 4, and the reflection path corresponding to the receiving probe 7 is only intersected with the transmitting paths of the transmitting

probes

2, 3 and 4, on the basis, other scanning heights are additionally added to the transmitting probe 1 through the cooperation of the transmitting

probes

1 and 4, and meanwhile, in fig. 7, the additional scanning heights are added to the transmitting probe 2 through the cooperation of the transmitting

probes

2 and 4, but since the transmitting

probes

2, 3 and 4 can be used as receiving probes, and do not select to receive signals sent by only one transmitting probe per se, so that this scanning height, at which the transmitting

probes

2 and 4 cooperate to cover, can likewise be detected by the combination of the

transmitting probes

1 and 3; for the same reason, the vertical flaw with the scanning height marked as covered by the transmitting

probes

1 and 2 in fig. 4 can be detected by the combination of the

transmitting probes

2 and 3 and 4, so that the probability of detecting the bottom layer flaw can be improved under the condition that the upper layer has the flaw, and the number of the flaw heights capable of being detected on the transmitting path of each transmitting probe is approximately the same under the condition of not considering the positions of repeated scanning.

The arrangement of probes shown in figure 6 is substantially the same as that of figure 7, it being determined that when the number of transmit and receive probes is substantially the same, the total number of probes required is less and the adjacent scan height intervals for the same transmit probe are greater. Based on the technical solutions provided by the present embodiment and the exemplary division manners of fig. 5-7, a person skilled in the art can make certain changes to the specific arrangement manner and communication combination manner of the probe according to the detection principle of the present application, and these changes should fall within the protection scope of the claims of the present application.

Based on the explanation of the probe combination mode and the scanning principle provided by the embodiment, under the condition that the flaw detection area is uniformly divided into a plurality of scanning heights with the distance of h, the number of probes satisfies the following relation,

where m is the number of receiving probes, n is the number of transmitting probes, int () operator represents the rounding, H₂Indicating the distance between the upper boundary of the flaw detection area of the track and the bottom surface of the track, H₁,H₁The distance between the lower boundary of the rail flaw detection area and the bottom surface of the rail is more than or equal to 0, and the height of the flaw detection area is H₂-H₁。

Because the transmitting path is reflected in the direction opposite to the position of the receiving probe when directly transmitted to the bottom surface of the track, the lowest scanning height needs to be higher than the bottom surface of the track, and the specific numerical value can be determined according to flaw detection sensitivity, namely flaw size requirement and probe parametersSpecifically, fig. 5 shows a typical 60-rail scanning system distribution, the total depth of 60 rails is 176, and the flaw detection area is the height of the whole rail, i.e. H₁＝0，H₂176, the scanning height interval h is 10, 2 transmitting probes are selected in fig. 5, and the number of receiving probes is

All the probes are numbered sequentially starting from the first transmitting probe, and the numbering result as shown in fig. 5 is obtained, and the preferred scanning combination mode is as follows:

fig. 6 also shows a division of 60 rails, wherein the inspection area is still the height of the entire rail, and h is 12, then

The preferred combination of probes is:

fig. 7 differs from fig. 6 only in that 4 transmitting probes are used, and 3 receiving probes can be known according to the number relationship between the transmitting probes and the receiving probes, and the preferred combination relationship between the probes is as follows:

fig. 8 shows a schematic view of increasing the scanning height interval in fig. 5 to 12, where n is 2 and m is 7.

It is evident from the embodiments of fig. 5-8 that the total number of probes can be reduced as the interval of scanning height increases, and it is generally required in the art that the damage of a flat-bottom hole with a diameter of 4mm can be found at the lowest, and based on this requirement, h ≧ 4 is generally set, and h ∈ [8,12] is preferably set, although other data can be selected by those skilled in the art based on the scanning requirement.

After all the probes are numbered sequentially, the distances among all the probes satisfy the following relation:

wherein l_iThe distance between the ith probe and the (i-1) th probe is shown, and alpha is the included angle of the emission path and the vertical plane. The above relationship can be simply calculated from the similar triangle relationship, and the detailed explanation is not provided in the present application; it can be seen that the distance between adjacent probes has a direct relationship to the angle a, and for the purpose of facilitating control of the proper mutual spacing, it is preferred to have a e 38.65 DEG, 45 DEG]. Those skilled in the art will appreciate that proper extension of the above ranges will not produce significant changes in distance and that even significant changes in distance are consistent with the detection principles provided herein.

From above-mentioned formula can discover, when probe quantity is more, distance between the transmitting probe can be greater than the distance between the receiving probe, in order to simplify the system, can be fixed in same water wheels with a plurality of transmitting probes, the water wheels size that corresponds this moment also can corresponding increase, refer to fig. 2-5, the setting mode of fixed a big water wheel and three little water wheels on the water wheel seat has been shown in the picture, the nearer transmitting probe of a plurality of distances of big water wheel internal fixation this moment, a receiving probe of every little water wheel internal fixation, if the quantity of transmitting probe further increases, can further increase the quantity of big water wheel, only need guarantee that the distance of the adjacent transmitting probe in two adjacent big water wheels satisfies the work requirement can. It should be noted that after the water wheel is fixed on the water wheel seat 09, the heights of the surfaces of the large water wheel and the small water wheel facing the track 067 are the same, and the position where the large water wheel is fixed on the water wheel seat 09 should have a structure protruding upwards to match the large water wheel.

It will be understood by those skilled in the art that the distance between the probes described herein is the distance between the transmit path of the transmitting probe and the intersection point of the receive path of the receiving probe with the rail surface or other plane parallel to the rail surface, and not necessarily the actual spatial distance between the probes, the actual position of each probe being a combination of probe type and fixed structure considerations.

It has been said in the foregoing, when there is the worry of missed detection to single angle detection, can set up two at least detection system that angle alpha is different on same track, go to detect the damage with the angle of difference, in order to avoid the bottom damage to be sheltered from by the upper strata, in fact the same horizontal distance of looking into the crossing point of route and orbital upper and lower surface can not be too big, and the change track that generally can be timely when there is the damage, so even lower floor's damage has been sheltered from by the upper strata damage, also can be changed simultaneously when changing this section track, consequently only also satisfy the demand of detecting a flaw with one set of detection system. The detecting system that this embodiment provided mainly detects to perpendicular injury, when the injury of other angles of needs synchronous detection, can set up the detecting system who detects other angles injuries among the prior art in series simultaneously to detect the comprehensive scanning of in-process of once detecting a flaw and detect.

Claims

1. A wheel type probe fixing system for vertical injury scanning comprises a fixed frame, a pair of walking wheels and a water wheel seat, wherein the walking wheels are mounted at the lower end of the fixed frame and support the fixed frame to walk along a track; the method is characterized in that: be provided with at least three probe on the waterwheel seat, wherein including at least one transmitting probe or at least one receiving probe, transmitting probe and receiving probe distribute in at least one waterwheel, the ultrasonic wave that transmitting probe sent can be received by a receiving probe after the inside perpendicular injury of track and the two mirror reflection of track bottom surface, a plurality of probe cooperations on the probe support can scan the perpendicular injury of a plurality of heights in the flaw detection region.

2. A wheeled probe securement system for vertical lesion scanning as defined in claim 1, wherein: fixed frame is including arranging the interior backup pad and the outer backup pad of track both sides in separately and connecting the walking wheel slide bar of inside and outside backup pad, the pivot both ends of walking wheel are fixed with by spacing cover establish the otic placode on the walking wheel slide bar, and the walking wheel sets up between two otic placodes.

3. A wheeled probe securement system for vertical lesion scanning as defined in claim 2, wherein: one end of the inner side of the travelling wheel is provided with a side baffle which protrudes out of the wheel body and is abutted and limited with the inner side surface of the track, and a return spring which is limited between an ear plate and an inner support plate at the inner side of the travelling wheel is arranged on the travelling wheel slide rod; still be provided with the support slide bar of two piece at least fixed connection inside and outside backup pad between inside and outside backup pad, the cover is equipped with the water wheel support of being connected with the water wheel seat on the support slide bar, fixedly connected with reinforcing plate on the otic placode of walking wheel homonymy, be fixed with a motor on the reinforcing plate, the power end of motor with water wheel support fixed connection.

4. A wheeled probe securement system for vertical lesion scanning as defined in claim 3, wherein: looking along perpendicular orbital direction, water wheel seat and water wheel support all roughly are the rectangle structure, fixed through hole has been seted up respectively at both ends around the advancing direction to water wheel seat, water wheel support downwardly extending respectively along the both ends of advancing direction is provided with fixed through hole complex hanger plate.

5. A wheeled probe securement system for vertical lesion scanning as defined in claim 4, wherein: the power end of the motor is hinged and fixed with the water wheel support, a hinge frame extends upwards from any side edge of the water wheel seat along the advancing direction, a second motor is hinged on the side edge of the water wheel support opposite to the hinge frame, and the power end of the second motor is hinged and matched with the hinge frame; the fixed through hole is hinged and matched with the hanging plate; two articulated shafts of second motor, the articulated shaft of motor power end and hanger plate and the articulated shaft of fixed through-hole all are parallel with walking wheel advancing direction.

6. A wheeled probe securement system for vertical lesion scanning as defined in claim 4, wherein: the inner ear plates of the travelling wheels at the two ends are respectively provided with pear heads which can be lapped on the surface of the track in a front-back extending way in the travelling direction; a brush and a spray head which act on the surface of the track are arranged between the pear head of the front travelling wheel and the inner side ear plate where the pear head is positioned.

7. A wheeled probe securement system for vertical lesion scanning as defined in claim 1, wherein: the transmitting direction of the transmitting probe is parallel to the receiving direction of the receiving probe, and the receiving direction of the receiving probe is inclined towards one side of the transmitting probe matched with the receiving probe; the transmitting probes and the receiving probes are linearly arranged on the probe bracket in a non-crossed manner, and the transmitting probes can be simultaneously used as the receiving probes.

8. A wheeled probe securement system for vertical lesion scanning as defined in claim 7, wherein: the flaw detection area is uniformly divided into a plurality of scanning heights with the interval of h, and the relation between the number m of the receiving probes and the number n of the transmitting probes is expressed as

Wherein the int () operator represents the rounding, H₂Indicating the distance between the upper boundary of the flaw detection area of the track and the bottom surface of the track, H₁Indicating the distance between the lower boundary of the rail inspection area and the bottom surface of the rail,the height of the flaw detection area is H₂-H₁。

9. A wheeled probe securement system for vertical lesion scanning as defined in claim 8, wherein: numbering all probes in sequence starting from the first transmitting probe, the distance between adjacent probes is:

10. A wheeled probe securement system for vertical lesion scanning as defined in claim 9, wherein: the water wheel seat comprises at least one large water wheel and at least one small water wheel, a plurality of transmitting probes are fixed in the large water wheel, and a receiving probe is fixed in the small water wheel.