CN204882466U - Hole -bored axle from end to end device of detecting a flaw - Google Patents
Hole -bored axle from end to end device of detecting a flaw Download PDFInfo
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- CN204882466U CN204882466U CN201520602798.7U CN201520602798U CN204882466U CN 204882466 U CN204882466 U CN 204882466U CN 201520602798 U CN201520602798 U CN 201520602798U CN 204882466 U CN204882466 U CN 204882466U
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- probe
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- bored axle
- feeler lever
- failure detector
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Abstract
The utility model provides a hole -bored axle from end to end device of detecting a flaw, it sets up ultrasonic sensor including probe and probe rod on the probe, and at the inside encoder that sets up of probe rod, the encoder passes through an acquisition circuit connect the processor, wherein, at the inside probe rotation angle compensation arrangement that still is provided with of probe rod, the probe rotation angle compensation arrangement through the 2nd acquisition circuit with the treater is connected, the treater passes through net twine and upper computer connection. The utility model provides an error problem that probe rotation angle deflected and causes because of the probe rod in the traditional device of detecting a flaw of hole -bored axle from end to end device of detecting a flaw solution, rotatory compensation arrangement detects the deflection angle of probe rod through popping one's head in, the realization is to probe rotation angle's compensation, can pinpoint at the position of detecting a flaw, improve the accuracy of detecting a flaw, simultaneously can effectual deflection state of monitoring the probe rod, this hole -bored axle from end to end device of detecting a flaw easy operation, can improve the performance of detecting a flaw greatly, maintain and the maintenance cost is reduced, the service life of the probe rod is prolonged.
Description
Technical field
The utility model relates to hole-bored axle from end to end failure detector.More particularly, the utility model relates to a kind of deflection angle by detection feeler lever thus compensates the anglec of rotation of probe, the hole-bored axle from end to end failure detector of accurate location defect position.
Background technology
Current, the flaw detection of motor train unit hole-bored axle from end to end has become the important maintenance procedure ensureing safe train operation.Hole-bored axle from end to end inspection technique general in the world utilizes a feeler lever, installs ultrasound wave transmitting and receiving probe on feeler lever top.Probe segment connects probe holder by motor to be arranged on feeler lever.In flaw detection operation, along with feeler lever toward axletree inside axially depth slowly advance, the simultaneously probe slow circumvolve of front end, relies on ultrasonic signal can realize the defects detection of radial 360 degree of hole-bored axle from end to end in axial displacement.The horizontal shift of being popped one's head in by Accurate Determining and the anglec of rotation, can carry out precise positioning to axletree defect.This feeler lever and drag chain flexibly connect, and are recovered to defectoscope inside when not detecting a flaw operation, and it advances and shrink and relies on servo electrical machinery system to drive; The anglec of rotation of popping one's head in is then rely on the rotary encoder coaxial with probe electric rotating machine to carry out Accurate Measurement.Feeler lever in whole flaw detection and traveling process non rotating, only having probe to rotate.
But, find during actual measurement, because unidirectional continuously (clockwise or counterclockwise) rotation of probe can produce certain rotating force to feeler lever, although this power is very little, can ignore under normal circumstances.But, because feeler lever relies on drag chain to be connected with defectoscope main body, be connected with certain activity space.Therefore, in some unpredictable and uncontrollable situation, the rotating force of probe can cause feeler lever to have deflection by a small margin or swing.Although this oscillating quantity is very little, error can be caused to the anglec of rotation location of probe, finally have impact on flaw detection accuracy.Meanwhile, because feeler lever is in stress for a long time, drag chain can be caused to strain, directly have influence on the feeler lever life-span.
In view of more than, urgently have one can solve hole-bored axle from end to end failure detector probe anglec of rotation error problem, and can to detect a flaw operation time feeler lever carry out the generation of the hole-bored axle from end to end failure detector of state-detection to a certain degree.
Utility model content
The utility model, for the problems referred to above, provides the accurate location defect position of a kind of energy, improves the hole-bored axle from end to end failure detector of flaw detection accuracy.
An object of the present utility model there is provided a kind of detection capability, the hole-bored axle from end to end failure detector that improves feeler lever serviceable life that can improve failure detector.
For this reason, the utility model provides a kind of probe anglec of rotation compensation system for hole-bored axle from end to end flaw detection, and it comprises probe and feeler lever, probe arranges ultrasonic sensor, arrange scrambler in feeler lever inside, scrambler passes through the first Acquisition Circuit connection handling device, wherein:
Also be provided with probe anglec of rotation compensation system in feeler lever inside, described probe anglec of rotation compensation system is connected with described processor by the second Acquisition Circuit, and described processor is connected with host computer by netting twine.
Preferably, wherein, described probe anglec of rotation compensation system is obliquity sensor.
The obliquity sensor of feeler lever inside is for measuring the deflection angle of feeler lever, and scrambler is used for the anglec of rotation of measuring sonde, then compensates the anglec of rotation of probe with the deflection angle of feeler lever.Solve the error problem that in traditional failure detector, head angle causes because of feeler lever deflection like this, greatly can improve flaw detection accuracy; Meanwhile, reflected the couple state of feeler lever and probe by the large activation of the deflection angle of feeler lever, and the duty of feeler lever, for carrying out condition diagnosing to feeler lever and providing reference frame the need of replacing maintenance etc.Further, the operating process of this obliquity sensor is independent of original fault detection system, and parallel use, does not damage original failure detector.
Preferably, wherein, described second Acquisition Circuit is analog quantity acquisition circuit.
Preferably, wherein, described first Acquisition Circuit is high-speed pulse Acquisition Circuit.
Preferably, wherein, described processor is the microprocessor of ARM7 framework.
Preferably, wherein, also comprise:
Drive unit, it is arranged in described feeler lever, and the output shaft of described drive unit is connected with described probe, rotates to drive described probe.
Preferably, wherein, one end of described feeler lever is connected with probe, and the other end is flexibly connected by drag chain and conveying mechanism.During flaw detection, feeler lever is stretched into hole-bored axle from end to end inside by drag chain by conveying mechanism, then drives probe motor to rotate, and launches ultrasound wave and receive ultrasonic echo.By obtaining defective data to the analysis of ultrasonic echo, obtain defective locations by gathering feeler lever displacement data with probe rotary encoder data.
Preferably, wherein, described conveying mechanism is servomotor, and described servomotor drives described feeler lever to move horizontally along hole-bored axle from end to end inner surface axial by drag chain.
Preferably, wherein, described drive unit is electric rotating machine.
Preferably, wherein, described ultrasonic sensor is 5 ~ 7.
Scrambler digital pulse signal is uploaded to the microprocessor of ARM7 framework by scrambler by high-speed pulse Acquisition Circuit, obliquity sensor analog signals is uploaded to the microprocessor of ARM7 framework by inclination angle scrambler by analog quantity acquisition circuit, the microprocessor of ARM7 framework is connected with host computer by TCP/IP network service.The microprocessor processes that host computer receives ARM7 framework completes and the probe rotary angle signal uploaded and feeler lever deflection angle signal, and the deflection angle of feeler lever is compensated in the anglec of rotation of probe, realize the accurate location to flaw detection position, if carry out early warning when having significantly tilt to feeler lever simultaneously.The utility model with the microprocessor of ARM7 framework for core, expand high-precision analog amount Acquisition Circuit and high-speed pulse Acquisition Circuit, expand data storage circuitry and TCP/IP mixed-media network modules mixed-media circuit, the high-speed figure pulse signal of capturing and coding device and obliquity sensor analog signals.In order to ensure the real-time of high speed acquisition, system dominant frequency is 48MHz, and on the microprocessor of ARM7 framework, transplants embedded real-time operating system uC/OS, data dispatching acquisition and processing, and with TCP/IP network communication mode fast return data.During communication, module work is at server mode.For avoiding data buffer storage to overflow, as long as collect data after module is successfully connected with host computer, just send the data to host computer immediately.
The utility model at least comprises following beneficial effect:
1, the hole-bored axle from end to end failure detector that the utility model provides has installed probe anglec of rotation compensation system additional on original feeler lever, realizes the measurement of the deflection angle to feeler lever.Scrambler can be measured the probe anglec of rotation, and the deflection angle of feeler lever compensates in the anglec of rotation of probe by host computer, realizes, to the accurate location of defective locations, improve the accuracy of flaw detection.
2, probe anglec of rotation compensation system of the present utility model can detect the deflection state of feeler lever effectively, and pinpoints the problems early, improves the serviceable life of feeler lever, reduces and safeguards and cost of upkeep.
3, the probe anglec of rotation compensation system that the hole-bored axle from end to end failure detector that the utility model provides increases newly and analog quantity acquisition circuit, independent of the other system of failure detector, do not destroy original inspecting machine structure, easily realize, and with low cost, simple to operate.
Accompanying drawing explanation
Fig. 1 is the structural representation of hole-bored axle from end to end failure detector described in the utility model.
Fig. 2 is the structural representation of signal acquiring system of anglec of rotation compensation system of popping one's head in hole-bored axle from end to end failure detector described in the utility model.
Fig. 3 is the flaw detection control system schematic diagram of hole-bored axle from end to end failure detector described in the utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail, can implements according to this with reference to instructions word to make those skilled in the art.
As shown in Figure 1, Figure 2, Figure 3 shows, the utility model provides a kind of hole-bored axle from end to end failure detector, comprising:
Probe 1, probe 1 arranges ultrasonic sensor 2, and described ultrasonic sensor 2 has multiple, such as 5,7 or more;
Feeler lever 3, arranges scrambler 4 in feeler lever 3 inside, and scrambler 4 is by high-speed pulse Acquisition Circuit 5 connection handling device 6, and such as, described processor 6 is the microprocessor of ARM7 framework;
Probe anglec of rotation compensation system 7 is also provided with in feeler lever 3 inside, described probe anglec of rotation compensation system 7 is obliquity sensor, described probe anglec of rotation compensation system 7 is connected with described processor 6 by analog quantity acquisition circuit 8, and described processor 6 is connected with host computer 9 by netting twine.
One end of described feeler lever 3 is connected with probe 1, and the other end is flexibly connected by drag chain 10 and conveying mechanism.Such as described conveying mechanism is servomotor, and described servomotor drives described feeler lever 3 to move horizontally along hole-bored axle from end to end 11 inside surface by drag chain 10.Further, conveying mechanism described in the utility model is servomotor is plant preferably to illustrate, also comprises other multiple conveying mechanisms.
Arrange drive unit 12 in described feeler lever 3, the output shaft of described drive unit 12 is connected with described probe 1, rotates to drive described probe 1.Such as described drive unit is electric rotating machine.
As shown in Figures 2 and 3, during flaw detection, feeler lever 3 is stretched into the inside of hole-bored axle from end to end 11 by conveying mechanism by drag chain 10, and then accessory drive 12 drives probe 1 to rotate.Ultrasonic sensor 2 also receives to the surface emitting ultrasound wave of hole-bored axle from end to end 11 inside the ultrasonic signal 210 reflected, and is uploaded to the ultrasonic processing unit 13 of UT in processor.The scrambler digital pulse signal 410 that the ultrasonic signal 210 of UT ultrasonic processing unit 13 acquisition probe and scrambler 4 gather, generates the ultrasonic waveform corresponding with position after treatment, enters host computer computer and show; Simultaneously, the scrambler digital pulse signal 410 that scrambler 4 gathers is uploaded to the microprocessor 6 of ARM7 framework by high-speed pulse Acquisition Circuit 5, the obliquity sensor analog signals 710 that obliquity sensor 7 gathers is uploaded to the microprocessor 6 of ARM7 framework by analog quantity acquisition circuit 8.Scrambler digital pulse signal 410 and obliquity sensor analog signals 710 are formed one-to-one relationship by the inclination angle in the microprocessor 6 of ARM7 framework and coded signal processing unit 610, sent in switch 17 by TCP/IP network service after simple process, and then be uploaded in host computer 9.Host computer 9 receives ultrasonic waveform and the encoder position information of the ultrasonic processing unit of UT 13, also receives encoder position information and the feeler lever obliquity information of inclination angle and coded signal processing unit 610 transmission simultaneously.Then, in software process, go out ultrasonic flaw detection signal and feeler lever dip angle signal according to encoder position information correspondence identical in the data of both sides, re-use obliquity information and probe positions is revised, right-on defective locations information can be drawn.
Such as, when the anglec of rotation that scrambler provides is forward (assuming that being just clockwise) 30 degree, the feeler lever deflection angle now recorded is forward 1.5 degree, and namely feeler lever also unexpectedly there occurs the deflection of forward 1.5 degree.These 1.5 degree (feeler lever positions) are gathered 30 degree (probe positions) of returning to UT and compensate by upper computer software, namely namely the original defect corresponding to 30 degree of positions is actual should, in 30-1.5=28.5 degree position, now compensate complete.
Being described as follows about scrambler and obliquity sensor signals collecting some work process and performance parameters of this programme design:
In flaw detection operation process, inclination angle and coded signal processing unit 610 Real-time Collection scrambler digital pulse signal 410, calculate the anglec of rotation of probe, gathers obliquity sensor analog signals 710 simultaneously, calculate feeler lever deflection angle angle value, then data packing is sent to host computer.In order to ensure flaw detection precision and accuracy, require that data acquisition system (DAS) has higher real-time.Design accuracy requires the resolution at least ensureing the probe anglec of rotation 0.1 degree (circle is 360 degree), and the resolution of feeler lever deflection angle is also 0.1 degree.Illustrate: if the parameter of scrambler sends 3600 pulses with B phase for the A phase that often to turn around, and normal inspection speed is probe rotation per minute 80 turns, i.e. 80r/min, ensure precisely to obtain probe pivoting angle data, then require at least p.s. capturing and coding device signal 4800 times.And in order to the feeler lever deflection angle numerical value that each anglec of rotation of Obtaining Accurate is corresponding, require that the sample frequency of analog quantity acquisition circuit is at more than 48KHz.Further, if the full scale of obliquity sensor is-30 degree ~ 30 degree, in order to ensure stability and the repeatability of the resolution at 0.1 degree, inclination angle, the A/D transition width of more than 13 must be adopted.
This programme data acquisition system (DAS) electrical structure is as shown in Figure 2: with the microprocessor 6 based on ARM7 framework for core, expand high-precision analog quantity acquisition circuit 8 and high-speed pulse Acquisition Circuit 5, expand data storage circuitry 14 and TCP/IP mixed-media network modules mixed-media circuit 15, the high-speed figure pulse signal 410 of capturing and coding device and obliquity sensor analog signals 710.In order to ensure the real-time of high speed acquisition, system dominant frequency is 48MHz, and on the microprocessor 6 of ARM7 framework, transplants embedded real-time operating system uC/OS, data dispatching acquisition and processing, and with TCP/IP network communication mode fast return data.In Fig. 2,16 is power module.During communication, module work, at server mode, for avoiding data buffer storage to overflow, as long as collect data after module is successfully connected with host computer, just sends the data to host computer immediately.
Although embodiment of the present utility model is open as above, it is not restricted to listed in instructions and embodiment utilization.It can be applied to various applicable field of the present utility model completely.For those skilled in the art, can easily realize other amendment.Therefore do not deviating under the universal that claim and equivalency range limit, the utility model is not limited to specific details and illustrates here and the legend described.
Claims (10)
1. a hole-bored axle from end to end failure detector, it comprises probe and feeler lever, probe arranges ultrasonic sensor, in feeler lever inside, scrambler is set, scrambler, by the first Acquisition Circuit connection handling device, is characterized in that, is also provided with probe anglec of rotation compensation system in feeler lever inside, described probe anglec of rotation compensation system is connected with described processor by the second Acquisition Circuit, and described processor is connected with host computer by netting twine.
2. hole-bored axle from end to end failure detector as claimed in claim 1, it is characterized in that, described probe anglec of rotation compensation system is obliquity sensor.
3. hole-bored axle from end to end failure detector as claimed in claim 1, it is characterized in that, described second Acquisition Circuit is analog quantity acquisition circuit.
4. hole-bored axle from end to end failure detector as claimed in claim 1, it is characterized in that, described first Acquisition Circuit is high-speed pulse Acquisition Circuit.
5. hole-bored axle from end to end failure detector as claimed in claim 1, it is characterized in that, described processor is the microprocessor of ARM7 framework.
6. hole-bored axle from end to end failure detector as claimed in claim 1, is characterized in that, also comprise:
Drive unit, it is arranged in described feeler lever, and the output shaft of described drive unit is connected with described probe, rotates to drive described probe.
7. hole-bored axle from end to end failure detector as claimed in claim 1, is characterized in that, one end of described feeler lever is connected with probe, and the other end is flexibly connected by drag chain and conveying mechanism.
8. hole-bored axle from end to end failure detector as claimed in claim 7, it is characterized in that, described conveying mechanism is servomotor, and described servomotor drives described feeler lever to move horizontally along hole-bored axle from end to end inner surface axial by drag chain.
9. hole-bored axle from end to end failure detector as claimed in claim 6, it is characterized in that, described drive unit is electric rotating machine.
10. hole-bored axle from end to end failure detector as claimed in claim 1, it is characterized in that, described ultrasonic sensor is 5 ~ 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520602798.7U CN204882466U (en) | 2015-08-11 | 2015-08-11 | Hole -bored axle from end to end device of detecting a flaw |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520602798.7U CN204882466U (en) | 2015-08-11 | 2015-08-11 | Hole -bored axle from end to end device of detecting a flaw |
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| Publication Number | Publication Date |
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| CN204882466U true CN204882466U (en) | 2015-12-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520602798.7U Active CN204882466U (en) | 2015-08-11 | 2015-08-11 | Hole -bored axle from end to end device of detecting a flaw |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109884185A (en) * | 2019-03-12 | 2019-06-14 | 南通友联数码技术开发有限公司 | Take turns shaft detection special-purpose ultrasonic head angle Auto-Test System and test method |
| CN111458411A (en) * | 2020-05-21 | 2020-07-28 | 四川大学 | Device, system and identification method for monitoring solid defects through multi-angle ultrasonic waves |
-
2015
- 2015-08-11 CN CN201520602798.7U patent/CN204882466U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109884185A (en) * | 2019-03-12 | 2019-06-14 | 南通友联数码技术开发有限公司 | Take turns shaft detection special-purpose ultrasonic head angle Auto-Test System and test method |
| CN109884185B (en) * | 2019-03-12 | 2021-09-28 | 南通友联数码技术开发有限公司 | Automatic testing system and testing method for angle of special ultrasonic probe for wheel axle detection |
| CN111458411A (en) * | 2020-05-21 | 2020-07-28 | 四川大学 | Device, system and identification method for monitoring solid defects through multi-angle ultrasonic waves |
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