CN206990508U - Scanning equipment - Google Patents

Abstract

The utility model provides a kind of scanning equipment, and the scanning equipment is applied to scanning the parts to be tested, and the parts to be tested has perforate, and scanning equipment includes centralising device, fixing component and scanning bar.Centralising device includes locating rod and at least two groups of poles, the respective one end of pole is individually fixed in locating rod, in a state of use in one end insertion perforate of locating rod, pole forms inclined angle with locating rod and props up the inwall of perforate so that locating rod is maintained at the central axis of perforate respectively.Fixing component is arranged at locating rod, and fixing component is fixed on the parts to be tested to limit locating rod axial movement in a state of use.Scanning bar is rotatably connected at locating rod.

Description

Scanning equipment

Technical field

A kind of scanning equipment, more particularly to a kind of probe suitable for fixed test equipment be the utility model is related to scanning The scanning equipment of the parts to be tested.

Background technology

Main shaft of many parts of appliance for a long time in run at high speed state, especially equipment.For example, wind-driven generator Its reducing district of main shaft is easy to stress concentration, and so as to crack, crackle is especially big to main shaft harmfulness, it is easy to thing occurs Therefore.Therefore, it is necessary to the part of appliance that runs at high speed is carried out periodically and irregular detection, to produce to watch out for crackle and ensure to set It is standby to run well.Conventional detection mode is to carry out crack detection using straight beam method head, but is carried out in this way During detection, some area can only can not be substantially defined in than accurately fixing for the test position of part of appliance Domain scope is detected, therefore this detection mode has many limitations.First, because test position can not be than accurately Fixed, testing result is affected by human factors very greatly, and the position that different people operates its detection is different, the result detected naturally Difference, bad contrast.Second, it is easy to during detection be influenceed to carry out missing inspection and erroneous judgement, testing result to defect by human factor Reliability is not high.3rd, because its test position changes when being detected each time to same part of appliance, there is position Deviation is put, therefore the testing result for being not easy to the different times with a pair of parts of appliance is compared, it is impossible to effective monitoring and chase after The micro-variations of track part of appliance.

Utility model content

The purpose of this utility model is to provide a kind of scanning equipment, can not precisely be consolidated with solving test position in the prior art The problem of determining.

To solve the above problems, the utility model provides a kind of scanning equipment, it is to be measured that the scanning equipment is applied to scanning Part, the parts to be tested have perforate, and scanning equipment includes centralising device, fixing component and scanning bar.Centralising device includes fixed Position bar and at least two groups of poles, the respective one end of pole are individually fixed in locating rod, and one end of locating rod is inserted in a state of use Enter in perforate, pole forms inclined angle with locating rod and props up the inwall of perforate so that locating rod is maintained at perforate respectively Central axis.Fixing component is arranged at locating rod, and fixing component is fixed on the parts to be tested to limit locating rod in a state of use It is axially moved.Scanning bar is rotatably connected at locating rod.

According to the embodiment of the utility model one, scanning equipment includes probe gripper, and probe gripper is fixed on scanning bar.

According to the embodiment of the utility model one, probe gripper is slidably connected to scanning bar.

According to the embodiment of the utility model one, pole is symmetrically fixed on locating rod.

According to the embodiment of the utility model one, locating rod is movably fixed in the respective one end of pole, and pole is away from fixed Operationally deviate locating rod or collapse in locating rod in one end of position bar.

According to the embodiment of the utility model one, centralising device includes cavity, spring and operating element, and cavity includes first Cavity and the second cavity, the first cavity are socketed on locating rod, and the second cavity is movably socketed on locating rod separably to paste Side, the respective one end of pole are sequentially inserted into the first chamber and the second cavity together in the first cavity respectively, and pole is articulated with The inside of one cavity, the second cavity are tapered；Spring is socketed on locating rod, spring between the second cavity and operating element, Operating element is movably fixed on locating rod with compression spring or spring is restored；When spring is in compressive state, bullet Spring props up the second cavity so that the second cavity props up the first cavity, and the respective one end of pole is limited towards fixed by the second cavity inner wall Position bar is gathered, and locating rod is deviateed in one end of the respective remotely located bar of pole；When spring restores, the second cavity and the first cavity Separation, pole are operationally collapsed in locating rod.

According to the embodiment of the utility model one, the group number of pole is two groups, and two groups of poles are spaced apart in locating rod.

According to the embodiment of the utility model one, one end of the respective remotely located bar of pole has pulley respectively.

According to the embodiment of the utility model one, fixing component has magnetic, and fixing component, which is adsorbed in, in a state of use treats Survey part.

According to the embodiment of the utility model one, fixing component includes three magnetic elements, and three magnetic elements symmetrically connect It is connected to locating rod.

Compared with prior art, the technical program has advantages below：

The utility model is realized by centralising device is fixed on opening for the parts to be tested especially Axle Parts by scanning equipment The central axis in hole, and be axially moved by fixing component to limit the locating rod of centralising device, so as to by scanning equipment When being detected after connecting detection equipment, test position will not be offset, and test position is fixed, and user can accurately detection and localization Position to cause center of the Main beam of the probe of detection device just at detection zone.Specifically, in detection process In, the locating rod of centralising device is inserted in the perforate of the parts to be tested, it is respectively and fixed to be fixed at least two groups of poles of locating rod Position bar forms angle of inclination, so as to which the respective end of pole is able to be respectively held against the inwall of perforate, at least two groups of poles respectively from Different positions limits the position of locating rod jointly, and the central shaft of perforate is remained at by such mode locating rod On line, i.e., scanning equipment is fixed in the central axis of the parts to be tested, avoids locating rod and occurs in the perforate of the parts to be tested Radial deflection；In addition, being axially moved by the way that fixing component is fixed on into the parts to be tested with limiting the locating rod of centralising device, realize Further scanning equipment and the parts to be tested are fixed, it is ensured that test position is fixed and do not offset.Second, can be more accurate based on user Ground position and fixed test position, using scanning equipment provided by the utility model carry out scanning when, testing result by it is artificial because Element influences small, reliability height.As long as scanning equipment is fixed on into the parts to be tested when different people operates, test position deviation is small, Testing result is basically identical, ensure that the reliability of testing result, solves that the test position in conventional art is unfixed to ask Topic.In addition, user can carry out resetting detection in different times for the same position of same the parts to be tested, when will be different The testing result of phase is contrasted, and is easy to analyze, follow the trail of and monitor the structure change of the parts to be tested.

The utility model realizes the probe for installing probe by the way that probe gripper is slidably connected into scanning bar Position can be adjusted flexibly in fixture, be easy to user's the parts to be tested size as needed to come the position of flexible modulation probe to determine Suitable test position and region.

The utility model by the respective one end of pole by being movably fixed on locating rod so that the remotely located bar of pole One end can operatively be deviateed locating rod respectively, inclined angle is formed with locating rod respectively so as to pole, pole is flared To prop up the inwall of perforate；Or pole is respectively operably collapsed in locating rod, so as to which user is able in the parts to be tested Perforate in move and adjust the position of centralising device, it is simple and convenient.

The utility model by setting pulley respectively in the respective end of pole, can adjustment centralising device easy to remove, subtract Frictional force between small pole and the perforate inwall of the parts to be tested.

The utility model, in the parts to be tested, realizes limitation locating rod axle by three mobilizable magnetic element automatic absorbings It is simple and convenient to motion, without extraly installing and fixing action.

Brief description of the drawings

Fig. 1 is the structural representation of the scanning equipment of the utility model embodiment；

Fig. 2 is the side sectional view of the scanning equipment of the utility model embodiment in a state of use；

Fig. 3 is the front view of the scanning equipment of the utility model embodiment in a state of use；

Fig. 4 is the structural representation of the centralising device of the utility model embodiment.

Embodiment

Description is served only for disclosing the utility model to enable those skilled in the art to implement the utility model below.With Embodiment in lower description is only used as illustrating, it may occur to persons skilled in the art that other obvious deformations.Retouched following The general principle of the present utility model defined in stating can be applied to other embodiments, deformation program, improvement project, equivalent And other are without departing from other schemes of the spirit and scope of the utility model.

As shown in Figure 1 to Figure 3, the utility model provides a kind of scanning equipment, and the scanning equipment is applied to connecting detection The probe of equipment, such as the probe of the detection device based on TOFD (ultrasonic wave diffraction time difference method) principle or phased array detection are visited Head, in order to user detected to the microstructure of part of appliance especially main shaft base part such as crack, defect, point Analysis, monitoring and tracking.As shown in Fig. 2 said herein exemplified by being detected using scanning equipment to the main shaft 100 of equipment Bright, usually, main shaft 100 has perforate 101, forms an accommodation space in perforate 101, perforate 101 has opening 1011. Scanning equipment includes centralising device 10, fixing component 20 and scanning bar 30.

As shown in figure 1, centralising device 10 includes locating rod 11 and at least two groups of poles 12.Described at least two groups of poles 12 Respective one end is individually fixed in locating rod 11.Described at least two groups of compartment of terrains of pole 12 are distributed in locating rod 11.Using Under state, one end of locating rod 11 is inserted in perforate 101, and described at least two groups of poles 12 extend from locating rod 11 respectively, institute At least two groups of poles 12 stated form inclined angle with locating rod 11 respectively and prop up the inwall of perforate 101, to position Bar 11 remains at the central axis of perforate 101.

Alternatively, described at least two groups of poles 12 are symmetrically fixed on locating rod 11, i.e. described at least two groups of poles 12 compartment of terrains are correspondingly distributed at least two diverse locations on pole 11, and each group of pole 12 symmetrically sets around locating rod 12 Put.

Alternatively, locating rod 11 is movably fixed in described at least two groups of 12 respective one end of pole respectively so that Respectively operably deviate locating rod 11 with radial opening or collapse in fixed in one end of the respective remotely located bar 11 of pole 12 The side of position bar 11.That is, pole 12 has two states, i.e. open configuration and rounding state.Under open configuration, branch One end of the respective remotely located bar 11 of bar 12 is respectively offset from locating rod 11, and one is respectively formed between each pole 12 and locating rod 11 Inclined angle, pole 12 are extended radially centered on locating rod 11 to surrounding；Under rounding state, pole 12 is respective The other end is collapsed when locating rod 11, each almost parallel side for fitting in locating rod 11 of pole 12.

Alternatively, in the present embodiment, under open configuration, pole 12 is respectively offset from locating rod 11 to be in radiation to surrounding When shape extends, each pole 12 forms the angle of inclination less than 90 ° between locating rod 11 respectively.In another embodiment, Under open configuration, when pole 12 is respectively offset from locating rod 11 to be extended radially to surrounding, each pole 12 respectively and positioning Bar 11 is vertical.

Further, centralising device 10 also includes cavity 13, spring 14 and operating element 15.As shown in figure 4, cavity 13 include the first cavity 131 and the second cavity 132, and the first cavity 131 and 132 respective inside of the second cavity have cavity, the One cavity 131 and the second cavity 132 are enclosed on locating rod 11, that is to say, that locating rod 11 sequentially passes through the first cavity 131 and Two cavitys 132.First cavity 131 is fixed on locating rod 11, and the second cavity 132 is then movably to be enclosed on locating rod 11, and second Cavity 132 can move along locating rod 11, and the second cavity 132 separably fits in the side of the first cavity 131.Second cavity 132 is tapered and size is less than the first cavity 131, and the size of the second cavity 132 subtracts away from the side of the first cavity 131 It is small.Each pole 12 is inserted in the inside of the first cavity 131 and is hingedly connected to the first cavity 132, and each pole 12 is each cut with scissors The cavity that one end inside the first cavity 131 is extended to inside the second cavity 132 from the first cavity 131 respectively is connected to, that is, Say that an end of each pole 12 is inserted in the second cavity 132.Each pole 12 can select sexual deviation locating rod by operation 11 and open or fit in locating rod 11 and collapse.Operating element 15 is movably socketed in locating rod 11, so as to operate member Part 15 can be operated along the shift position of locating rod 11.Spring 14 is located at the second cavity of operating element 15 and cone-shaped cavity 13 Between 132, spring 14 is placed on locating rod 11, and one end of spring 14 props up the second cavity 132, and the other end of spring 14 props up operation Element 15.

When operating centralising device 10, user first adjusts position of the operating element 15 in locating rod 11, so as to adjust behaviour Make the spacing between element 15 and the second cavity 132 of cavity 13 so that spring 14 is in compressive state.Spring 14 is in compression shape The second cavity 132 is propped up during state, spring 14 applies the effect of a power to the second cavity 132 so that the second cavity 132 is close Ground is bonded and withstands the first cavity 131, and now each 12 respective ends of pole are inserted in the second cavity 132.Due to Second cavity, 132 tapered and the second cavity 132 size is rationally set, and each 12 respective ends of pole are by The inwall limitation of two cavitys 132 is gathered towards the center of the second cavity 132, i.e., each 12 respective ends of pole are towards calmly Position bar 11 is gathered, and each 12 respective ends of pole prop up the inwall of the second cavity 132, the inwall of the second cavity 132 and every The strong effect in one pole, a 12 respective end.Because each pole 12 is hingedly connected to the first cavity 131, thus it is each The outside that one end of the respective remotely located bar 11 of pole 12 is then forced to cavity 13 is deviateed and opened, i.e., each pole 12 is respective One end of remotely located bar 11 is deviateed locating rod 11 and extended radially to surrounding, and now pole 12 is open configuration.

Conversely, when user adjusts the position of operating element 15 and make it that spring 14 restores, the cavity 132 of spring 14 and second Between there is no the effect of power, there is no the effect of power between the second cavity 132 and the first cavity 131, separate the first cavity 131 and the Two cavitys 132, now because the movement of the position of the second cavity 132, each pole 12 are each inserted in one of the second cavity 132 End produces spacing between the inwall of the second cavity 132 respectively, i.e., each pole 12 is each inserted in the one of the second cavity 132 Individual end does not prop up the inwall of the second cavity 132, therefore one end of the respective remotely located bar 11 of each pole 12 is no longer forced to partially Opened from locating rod 11, but each pole 12 can be fitted in locating rod 11 by operation, now pole 12 is rounding state.

As shown in Figures 2 and 3, in use, first the locating rod 11 of centralising device 10 is inserted by opening 1011 In the perforate 101 of main shaft 100 to be measured so that the overwhelming majority of locating rod 11 is placed in perforate 101, described at least two groups of branch Bar 12 is respectively positioned in perforate 101.Centralising device 10 is operated so that pole 12 extends radially from locating rod 11 to surrounding, i.e., Pole 12 is in open configuration, and the inwall of perforate 101 is propped up so that locating rod 11 so as to one end of the remotely located bar 11 of pole 12 Remain at the central axis (as shown in phantom in Figure 1) of perforate 101, and by the inwall of pole 12 and perforate 101 it Between active force, realize the perforate 101 that centralising device 20 is firmly sticked in main shaft 100.It is understood that due to described At least two groups of poles 12 be symmetrically disposed about with locating rod 11, pair the shape of each pole 21 is identical with length, i.e., Middle device 20 is symmetrical structure, therefore when each pole 12 is in open configuration, described at least two groups of poles 12 are right Claim ground radial to extending around from locating rod 11, so as to which the pole 12 extended to different directions is applied to locating rod 11 Active force can be balanced mutually, and locating rod 11 is remained at the central axis of perforate 101, i.e. scanning equipment is fixed on main shaft 100 center, locating rod 11 is avoided in radial deflection occurs in perforate 101, be advantageous to using scanning equipment process Middle fixed test position.

On the contrary, working as needs to remove centralising device 20 out of main shaft 100 or needs to adjust the position of centralising device 20 When, pole 12 can be operable to collapse in the side of locating rod 11, and now pole 12 is in rounding state, and each pole 12 is substantially Abreast fit in locating rod 11, i.e. pole 12 does not contact and propped up the inwall of perforate 101, pole 12 and perforate 101 it is interior There is no the effect of power between wall.So, whole centralising device 10 is able to be removed out of main shaft 100 perforate 101 easily.It is right The advantages of middle device 10 is can be easy to user assembled, and centralising device 10 is conveniently adjusted during use in the position in perforate 101, behaviour Make simple and convenient.

It is noted that the group number of pole 12 is arranged at least two groups, at least two groups of pole 12 be positioned apart from Locating rod 11, i.e., at least two groups of pole 12 are accordingly distributed at least two positions of locating rod 11, and each group of pole 12 is equal Symmetrically fixed around locating rod 11 in corresponding opening position.The advantages of so designing is that described at least two groups of poles 12 can To be accordingly respectively held against the inwall of perforate 101 from least two different positions, it is ensured that locating rod 11 is maintained at perforate 101 Central axis.Compared to the situation of only one group pole 12, described at least two groups of poles 12 ensure locating rod 11 and perforate 101 Central axis overlap.

Alternatively, in the present embodiment, the group number of pole 12 is two groups.In another embodiment, the group number of pole 12 is It is more than two, such as three groups or four groups.

Further, the end of each pole 12 has pulley (not shown), and specifically, pulley is arranged at each One end of the remotely located bar 11 of pole 12.As shown in figure 1, in use, when pole 12 is in open configuration, pulley is straight Contact and prop up the inwall of perforate 101.The advantages of so designing is, when assembling and adjusting centralising device 20, can to reduce Frictional force between each end of pole 12 and the inwall of perforate 101, is easy to user that centralising device 20 is inserted in into perforate 101 The interior or removal out of perforate 101 by centralising device 20.

Fixing component 20 is connected to locating rod 11, is axially moved with limiting locating rod 11 in a state of use.Such as Fig. 2 institutes Show, in a state of use, when the locating rod 11 of centralising device 10 is inserted in perforate 101, fixing component 20 can be operated and led The side of axle 100 is fixed, and limiting locating rod 11 by such mode is axially moved.Alternatively, fixing component 20 passes through absorption The side of ground mode and main shaft 100 is fixed.

It is noted that centering dress is limited by way of fixing component is fixed on the parts to be tested such as main shaft 100 Put 10 locating rod 11 to be axially moved, further can fix scanning equipment and the parts to be tested, it is ensured that test position is fixed Do not offset.

In the present embodiment, fixing component 20 includes three magnetic elements 21, and three magnetic elements 21 are around locating rod 11 It is symmetrically arranged.Three magnetic elements 21 are movably connected is located at three magnetic members in locating rod 11, one end of locating rod 11 The center of part 21.As shown in Fig. 2 in use, three magnetic elements 21 can be adsorbed in main shaft 100 by magnetic adsorptive power Side, so that centralising device 10 and main shaft 100 be fixed.The advantages of so designing is, in practical operation, when centering When the locating rod 11 of device 10 is inserted in the perforate 101 of main shaft 100, three magnetic elements 21 close to main shaft 100 side wall simultaneously Main shaft 100 is automatically adsorbed in by magnetic adsorptive power, it is simple and convenient, without extraly installing and fixing action.

Scanning bar 30 is connected to locating rod 11, and scanning bar 30 is popped one's head in for fixed test, for example, TOFD detection probes or Phased array detection probe.Specifically, one end of scanning bar 30 is rotatably connected at locating rod 11, the other end of scanning bar 30 Popped one's head in for fixed test.Perpendicular to locating rod 11, scanning bar 30 can be operable to locating rod 11 and turn for 360 ° for axle scanning bar 30 It is dynamic.In use, user passes through Rotational scan bar 30, you can turns so that scanning bar 30 carries out 360 ° around locating rod 11 It is dynamic, it is able to carry out 360 ° of rotations around locating rod 11 therewith so as to be fixed on the detection probe of scanning bar 30, with to detection zone Interior optional position carries out data acquisition and detection.Alternatively, scanning bar 30 is aluminium alloy rod.

Alternatively, the length of scanning bar 30 is scalable, so as to which user is able to the needs according to test position, detection zone model The size of size or the parts to be tested such as main shaft 100 is enclosed freely to adjust the length of scanning bar 30.It is understood that regulation The length of scanning bar 30 is equivalent to the position for adjusting the probe being fixed on scanning bar 30, so as to be popped one's head in during 360 ° of Rotational scan bars The zone radius of rotation is different, can so be detected for different regional extents, without replacing scanning bar 30 or Readjust the position of whole scanning equipment.

Further, scanning equipment also includes probe gripper 40, and probe gripper 40 is connected to one end of scanning bar 30.Visit Fixture head 40 is used for fixed probe, such as TOFD detection probes or phased array detection probe.

Alternatively, probe gripper 40 is slidably connected to scanning bar 30.Specifically, as shown in figure 3, scanning bar 30 has There is a chute 31, probe gripper 40 includes sliding part 41, and sliding part 41 is screw, sliding block or other suitable elements, probe clip Tool 40 is limited to chute 31 by sliding part 41, so as to which probe gripper 40 can move along chute 31.So design the advantages of be, User can change and adjust the position of probe gripper 40 by way of slip, so as to be able to spirit as needed in use The position living for rapidly adjusting probe, neatly it can also be detected for some arbitrary position in detection zone.

The scanning equipment provided by the utility model to the main shaft base part of equipment especially suitable for carrying out phased array inspection Survey, be a kind of scanning equipment that can be detected dedicated for main shaft phased array, in other words, the scanning equipment is applied to coordinate phase Battle array detecting instrument is controlled to carry out Axle Parts detection.But the purposes of scanning equipment provided by the utility model is not limited to axle class Part carries out phased array detection, is readily applicable in the detection of miscellaneous part, other field or other means.With to master Exemplified by axle 100 carries out phased array detection, when actually using scanning equipment, the probe of phased array detector is fixed on spy first Fixture head 40, to connect phased array detector, it is then determined that the radius size of main shaft 100 to be detected, according to main shaft 100 Radius size adjusts the position of probe gripper 40 so that the region that the Main beam of probe detects just at needs.Further Ground, scanning equipment is placed in the end face of main shaft 100, the locating rod 11 of centralising device 10 is inserted in the perforate 101 of main shaft 100, So as to which scanning equipment to be fixed on to the center of main shaft 100.In addition, the absorption of centralising device 10 is fixed on by fixing component 20 The side of main shaft 100.Finally, with locating rod 11 for 360 ° of Rotational scan bars 30 of axle, probe carries out 360 ° of scanning inspections to main shaft therewith Survey.

In addition, the scanning equipment can coordinate phased array detector to record testing result, if coordinating detection again Special-purpose software can be intuitively to find out the particular location of crackle, defect etc., size and the order of severity very much on instrument.User can To be detected in different times for the same position of same the parts to be tested, the testing result of different times is contrasted, It is easy to analyze, follow the trail of and monitor the structure change of the parts to be tested, so as to effectively judge the change of the crackle, defect of the parts to be tested, Prevent accident generation, risk is preferably minimized.

In summary, the utility model is realized by centralising device 10 is fixed on the parts to be tested especially axle by scanning equipment The central axis of base part, prevent scanning equipment radial deflection；And determining for centralising device 10 is limited by fixing component 20 Position bar 11 is axially moved.Under the dual fixation of centralising device 10 and fixing component 20, it can be ensured that test position is not inclined Move, test position fixes, user can accurately detection and localization position to cause the Main beam of the probe of detection device lucky Center in detection zone.

Second, based on user can accurately position with fixed test position, utilize scanning provided by the utility model When device is detected, testing result is affected by human factors small, reliability height.As long as by scanning equipment when different people operates The parts to be tested is fixed on, test position deviation is small, and testing result is basically identical, ensure that the reliability of testing result, avoids The unfixed problem of test position in conventional art.

It will be appreciated by those skilled in the art that the embodiment of the present utility model shown in foregoing description and accompanying drawing is only made For citing, the utility model is not intended to limit.The purpose of this utility model completely and effectively realizes.Work(of the present utility model It can show and illustrated in embodiment with structural principle, in the case of without departing from the principle, implementation of the present utility model Mode can have any deformation and modification.

Claims (10)

1. a kind of scanning equipment, suitable for scanning the parts to be tested, the parts to be tested has perforate, it is characterised in that including：

Centralising device, including locating rod and at least two groups of poles, the respective one end of pole are individually fixed in the locating rod, made In one end insertion perforate with the locating rod under state, pole forms inclined angle with the locating rod and propped up out respectively The inwall in hole is so that the locating rod is maintained at the central axis of perforate；

Fixing component, is arranged at the locating rod, and the fixing component is fixed on the parts to be tested to limit in a state of use State locating rod axial movement；

Scanning bar, it is rotatably connected at the locating rod.

2. scanning equipment according to claim 1, it is characterised in that the scanning equipment includes probe gripper, the spy Fixture head is fixed on the scanning bar.

3. scanning equipment according to claim 2, it is characterised in that the probe gripper is slidably connected to described sweep Look into bar.

4. scanning equipment according to claim 1, it is characterised in that pole is symmetrically fixed on the locating rod.

5. scanning equipment according to claim 1, it is characterised in that the respective one end of pole is movably fixed on described Locating rod, the one end of pole away from the locating rod are operationally deviateed the locating rod or collapsed in the locating rod.

6. scanning equipment according to claim 5, it is characterised in that the centralising device includes：

Cavity, including the first cavity and the second cavity, first cavity are socketed on the locating rod, and second cavity can live The locating rod is socketed on dynamicly separably to fit in the side of first cavity, and the respective one end difference of pole is successively First chamber and second cavity are inserted in, pole is articulated with the inside of first cavity, and second cavity is in cone Shape；

Spring, it is socketed on the locating rod；

Operating element；The spring is between second cavity and the operating element, and the operating element is movably The locating rod is fixed on to compress the spring or cause the spring to restore；When the spring is in compressive state, institute State spring and prop up second cavity so that second cavity props up first cavity, the respective one end of pole is by described The limitation of two cavity inner walls is gathered towards the locating rod, and the positioning is deviateed in one end of the respective remote locating rod of pole Bar；When the spring restores, second cavity and first cavity separation, pole are operationally collapsed in the positioning Bar.

7. scanning equipment according to claim 1, it is characterised in that the group number of pole is two groups, two groups of pole intervals point It is distributed in the locating rod.

8. scanning equipment according to claim 1, it is characterised in that pole each distinguish by one end away from the locating rod With pulley.

9. scanning equipment according to claim 1, it is characterised in that the fixing component has magnetic, in use state Under the fixing component be adsorbed in the parts to be tested.

10. scanning equipment according to claim 1, it is characterised in that the fixing component includes three magnetic elements, and three The individual magnetic element is symmetrically connected to the locating rod.