A kind of ultrasound examination swivel head
Technical field
It the utility model is related to metal material scar detection technology field, more particularly to a kind of ultrasound examination swivel head.
Background technology
Ultrasound examination swivel head is current state-of-the-art tubing and bar automation non-destructive detecting device, and the equipment has
The advantages that detection efficiency is high, is not contacted detection in detection process using ultrasonic wave immersion probe, and pipe rod passes through distance to pop one's head in
More than 15mm water layer just completes whole detection process.When bar straight-line pass detects swivel head, in swivel head water logging gather
Jiao's probe,, must in order to accurately detect the various defects in bar around bar high-speed rotation under the drive of swivel head
Need popping one's head in, range error is no more than 0.3mm in detection process away from bar circumferential outer surface, for minor diameter high precision
Bar, error precision be no more than 0.1mm just can guarantee that accurately checks bar appearance and inside all defect.
However, to ensure that during the range error of above-mentioned requirements, the both ends for distribution of being popped one's head in swivel head devise clamping dress
Put, it is fixed because whole pivot is driven by main shaft for ensureing that bar reaches the pivot popped one's head in swivel head with one heart
The servicing unit both ends installation that position guide pin bushing is hung on the bearing block that fixed main shaft rotates, in this case, each position
Connection installation, cumulative errors caused by positioning the making precision of guide pin bushing be all extremely difficult to position guide pin bushing static center with probe revolve
Turn the requirement of center concentricity.Simultaneously in order to ensure that a large amount of bars can pass through 4 guide pin bushings in swivel head, typically make
Gap reaches 0.1-0.4mm, then because some heavier bars all can be automatically in guide pin bushing bottom surface of sending an invitation card in guide pin bushing internal clearance
Phenomenon, so make concentricity between bar and probe pivot bigger, due to the influence of concentricity, detection
When bar enter in one direction fashionable, Detection results are fine, but rotating 90 ° or 180 ° entrance of bar can not just detect
Defect or echo is greatly lowered the defects of detect, becomes defective work from certified products.If by detection sensitivity by worst
Direction be defined set sensitivity, can will be determined as defective work in the bar of certified products mass range again, cause product because
Detection error and caused significant wastage, are referred to as that circumferential sensitivity error is exceeded, and the reaction of this index is super in technical indicator
On sound wave 2dB has been brought up to by standard in nuclear power, aviation and war products not allow more than 4dB.
Utility model content
The utility model provides a kind of ultrasound examination swivel head, and the utility model apparatus structure is reasonable in design, is easy to
Operation, ensure that the concentricity requirement of interior outer guide sleeve and ultrasonic inspection probe, realizes the center pair of ultrasound examination swivel head
Middle regulation, improve the precision of bar Non-Destructive Testing.
The purpose of this utility model is achieved through the following technical solutions:
A kind of ultrasound examination swivel head, including frame and main shaft, the main shaft are rotatably arranged in frame, main shaft
Inside is provided with inner cylinder, and outer guide sleeve and interior guide sleeve are respectively charged into inner cylinder both ends and fixed with clamp nut, and bar is outside
Guide sleeve and interior guide sleeve are fixed in the middle part of inner cylinder, are provided with positioning sleeve on the outside of inner cylinder, the positioning sleeve is compressed by outer nut
Fixed, the positioning sleeve is provided with a circle housing screw;The medial end of the main shaft is installed with ultrasonic inspection probe, institute
State ultrasonic inspection probe to rotate at a high speed along bar center under main shaft drive, the outside of the main shaft and positioning sleeve, which is provided with, to be fixed
Flange, it is fixedly connected between the mounting flange and positioning sleeve by adjusting screw and locking nut, motor passes through transmission mechanism
Main shaft is driven to rotate, bar and ultrasonic inspection probe rotate at a high speed along same center.
Further, in addition to PLC, the PLC are connected with ultrasonic inspection probe and motor control, are used
In control ultrasonic inspection probe and the rotation process of motor.
Preferably, the ultrasonic inspection probe is immersion type ultrasonic probe.
Preferably, the motor includes orbit motor and clamping motor.
Compared with prior art, the utility model at least has advantages below:
By above-mentioned the technical solution of the utility model, inside and outside guide sleeve is set to be clamped as bar at inner cylinder both ends
Device, and be fixed with clamp nut, avoid bar that position skew occurs after inner cylinder is entered, be tested in bar screw-in
After cylinder, whether the pivot using instrument detection bar and ultrasonic inspection probe is consistent, that is, judges inside and outside guide sleeve with surpassing
The concentricity of sound detection probe, it is determined that tested bar off-centring direction and required offset, make to be tested by adjusting screw
Pipe bar center is consistent with probe detection pivot, so as to realize the center centering regulation of ultrasound examination swivel head, improves
The precision of bar Non-Destructive Testing.
Brief description of the drawings
Fig. 1 is a kind of structure sectional view for ultrasound examination swivel head that the utility model embodiment provides.
Embodiment
Below in conjunction with the accompanying drawing in the utility model, the technical scheme in the utility model is carried out clearly and completely
Description, it is clear that described embodiment is only part of the embodiment of the present utility model, rather than whole embodiments.Base
Embodiment in the utility model, the institute that those of ordinary skill in the art are obtained under the premise of creative work is not made
There is other embodiment, belong to the scope of the utility model protection.
As shown in figure 1, a kind of ultrasound examination swivel head proposed for the utility model embodiment, including frame 1 and master
Axle 2, main shaft 2 are rotatably arranged in frame 1, and the inside of main shaft 2 is provided with inner cylinder 3, and outer guide sleeve 4 and interior guide sleeve 5 fill respectively
Enter the both ends of inner cylinder 3 and fixed with clamp nut 6, bar is fixed on the middle part of inner cylinder 3 through outer guide sleeve 4 and interior guide sleeve 5, interior
The outside of cylinder 3 is provided with positioning sleeve 7, and positioning sleeve 7 is fixed by outer nut 8, and positioning sleeve 7 is provided with a circle housing screw 9;It is main
The medial end of axle 2 is installed with ultrasonic inspection probe 10, and ultrasonic inspection probe 10 is under the drive of main shaft 2 along bar center
Rotate at a high speed, the outside of main shaft 2 and positioning sleeve 7 is provided with mounting flange 11, by adjusting spiral shell between mounting flange 11 and positioning sleeve 7
Nail 12 is fixedly connected with locking nut 13, and motor drives main shaft 2 to rotate by transmission mechanism, bar and ultrasound detection
Probe 10 rotates at a high speed along same center.
Further, in addition to PLC, PLC are connected with ultrasonic inspection probe 10 and motor control, are used for
Control the rotation process of ultrasonic inspection probe 10 and motor.
Preferably, ultrasonic inspection probe 10 is immersion type ultrasonic probe, and the quantity of housing screw 9 is 6, adjusting screw
12 quantity is 4.
A kind of optional or be preferably carried out mode as the utility model, motor includes orbit motor and clamping motor,
The center centering regulation process of ultrasound examination swivel head is illustrated below in conjunction with the accompanying drawings:
1) test sample tube is selected
Length:Ensureing the clamping device (inside and outside guide sleeve) at swivel head both ends can normally clamp;
Linearity:It is more straight better;
Ovality:Ovality is the smaller the better.
2) test sample tube is placed
The test sample tube chosen is screwed in inner cylinder by opening track motor and clamping motor, enables swivel head both ends clamping device
It is stable to clamp, and turn off all motors;
ON cycle water, by the angle Uprightness adjusting of swivel head some passage probe, perpendicular to test sample tube.
3) concentricity is detected
It is whether consistent that the pivot of bar and ultrasonic inspection probe is detected using USIP40 instruments, determines measured tube rod
Material off-centring direction and required offset.
4) concentricity of swivel head is adjusted
Loose housing screw is adjusted first, and adjusting adjusting screw up and down makes test sample tube center and probe detection pivot
Unanimously, concentricity is specifically judged by the boundary wave shaking amplitude on USIP40 instruments, finally screws housing screw and lock
Adjusting screw.
Compared with prior art, the utility model at least has advantages below:
By above-mentioned the technical solution of the utility model, inside and outside guide sleeve is set to be clamped as bar at inner cylinder both ends
Device, and be fixed with clamp nut, avoid bar that position skew occurs after inner cylinder is entered, be tested in bar screw-in
After cylinder, whether the pivot using instrument detection bar and ultrasonic inspection probe is consistent, that is, judges inside and outside guide sleeve with surpassing
The concentricity of sound detection probe, it is determined that tested bar off-centring direction and required offset, make to be tested by adjusting screw
Pipe bar center is consistent with probe detection pivot, so as to realize the center centering regulation of ultrasound examination swivel head, improves
The precision of bar Non-Destructive Testing.
It is described above, the only preferable embodiment of the utility model, but the scope of protection of the utility model is not
This is confined to, any one skilled in the art can readily occur in the technical scope that the utility model discloses
Change or replacement, should all cover within the scope of protection of the utility model.Therefore, the scope of protection of the utility model should
It is defined by the protection domain of claims.