CN85100207B - Device for investigating the presence of flaw on steel rope - Google Patents
Device for investigating the presence of flaw on steel rope Download PDFInfo
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- CN85100207B CN85100207B CN85100207A CN85100207A CN85100207B CN 85100207 B CN85100207 B CN 85100207B CN 85100207 A CN85100207 A CN 85100207A CN 85100207 A CN85100207 A CN 85100207A CN 85100207 B CN85100207 B CN 85100207B
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- steel rope
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Abstract
The present invention relates to a flaw detection instrument for measuring broken wires of steel cables, particularly to an instrument for carrying out the quantitative analysis of broken wires of steel cables by a magnetic variable metering device. The present invention is mainly composed of an excitation source and a sensor. The present invention can determine the number and the positions of broken wires and can analyze the quantity state and the service life of a steel cable through digital display obtained by the instrument. The instrument is characterized in that the electromagnetic sensor is composed of a group of high-sensitivity Hall elements with a separated output circuit and a shielding cover. A broken wire signal detected by the sensor obtains measured digital display through the real-time processing of a microcomputer. The flaw detection instrument for measuring broken wires of steel cables can be widely used for the units of the development, the use, etc. of steel cables and can be used for the flaw detection of long ferromagnetic materials, such as pipes, rods, etc.
Description
The invention belongs to and utilize magnetic variables measurement device to come steel rope fault is carried out the detector device of quantitative check.
Existing steel rope flow detector is to be made of gauge head and detection record (comprising electronic circuit) two parts.Probe part makes excitation source by DC electromagnet or permanent magnet and sensor is formed.The detection record part is made up of electronic circuit and single direct-writing registering instrument.
When fracture of wire appears in the section of being examined wire rope, form stray field at incision position.By sensor stray field is become voltage signal, after amplifier amplifies, be recorded on the paper tape by registering instrument.Sensor has coil type and Hall element formula.
As initiating on March 18th～20,1980, in " first the wire rope annual meeting " held in the Denver, various countries' wire rope tester device has been carried out the summing-up comment by USDOE and Washington State University.Meeting thinks that at present best is magnetic chart (Magnoraph) the formula steel rope flow detector of Canada's development.This instrument is to adopt permanent magnet to make excitation source, and sensor is to be made of inside and outside two magnetic flux clustering rings and 4 Hall elements.Sensor output is after amplifying, by single-pen recorder record or magnetic recording.This defectoscope obtains United States Patent (USP) power, the patent No. 4096437 in June, 1978; Obtain southern luxuriant and rich with fragrance patent right, the patent No. 77/2128 in July, 1978; Obtain Canadian Patent power in September, 1978, the patent No. 1038037; Obtain BrP power in June, 1979.The patent No. 1539313; Obtained Swiss Patent power in 1980, the patent No. 615758.
The steel rope flow detector of various countries' development at present comprises Canadian magnetic chart formula defectoscope, all has following three subject matters: one, to the concentrated fracture of wire of distance very near (in 20 millimeters) more than 2, in inspection record, can not differentiate the fracture of wire radical.Its two, with the recording mode of single analog record curve, to the same transversal section of wire rope or be bordering on the same transversal section, the fracture of wire radical in the different rope strands also is difficult to differentiate.Its three, poor to the fracture of wire resolution characteristic of corrosion wire rope.The characteristics of existing defectoscope can only be pointed out the position of fracture of wire and the relative order of severity.And wire rope is used the later stage, it is helpless that fracture of wire is concentrated the quantitative resolution of section.In other words, the steel rope flow detector that present various countries are developed, its performance all is in the qualitative examination stage, can not quantitatively indicate.
The objective of the invention is to and to carry out quantitative test to steel rope fault, and can determine corrosion steel wire radical, to satisfy the actual needs that wire rope is checked.
The present invention is made up of gauge head and record two large divisions.Probe part comprises permanent magnet, sensor and two groups of guide wheels.Recording section comprises electronic circuit, microcomputer, printer and multi-pen recorder.
Fig. 1 is front view of the present invention and side view
Fig. 2 is sensor composition figure
Fig. 3 is the inspection record curve of 12 road output transducers
Fig. 4 is a fundamental diagram
Fig. 5 is the sensor output signal oscillogram
Fig. 6 is a block scheme of the present invention
Probe part as shown in Figure 1.U-shaped permanent magnet (4) is made excitation source.
Main body-sensor of the present invention (5) is housed in the middle of two magnetic poles.As shown in Figure 2, its a kind of loop sensor of being formed by 6～24 Hall elements (8) with multichannel output.This group sensing element is contained on the lining (9) equably.For preventing the influence of magnetic pole, installed the magnetic shielding cover (7) that two and half garden shape soft irons are made additional in the sensing element outside.Sensor (5) is contained in the half garden shape stock (6) with the bipolar shoe concentric.
Pole shoe (3) is housed at the two ends of magnetic pole, and it is discerptible.During inspection it is opened, be enclosed within on the wire rope (1).For the axle center that makes wire rope (1) keeps overlapping with the axle center of sensor (5), at the two ends of bipolar shoe, respectively adorn the adjustable rubber guide wheel (2) that one group of three plane is mutually 120 degree angles, rise and regulate with one heart and guide effect.
Key of the present invention is engendering the resolution characteristic of fracture of wire radical.Because sensor is taked the independent output loop of each sensing element, and carries out signal Processing separately.It is the different of the stray field that produced according to different fracture of wire radicals and transducing signal (waveform) that same position is concentrated the resolution of fracture of wire, is analyzed, is judged by microcomputer.To same transversal section or be bordering on the fracture of wire of diverse location on the same transversal section, be by the sensing element near this position catch, output, for microcomputer analysis, judgement.So just improved resolution characteristic to fracture of wire.The measured fracture of wire radical addition of each sensing element, get data at last by printer.
From Digital Detecting record of the present invention, can clearly find out: the position of fracture of wire, the broken wires between same section or the close section of distance and the long total broken wires of full rope.This instrument also can carry out simulating of multiple signals in the amplifier back and export and record.Adopt the obtained inspection record of this instrument, can analyze the quality situation and the serviceable life of wire rope.In addition,, also can analyze and draw various different occasions and select for use the wire rope of which kind of structure the longest serviceable life by use inspection to the different structure wire rope, most economical rationally, thereby can save a large amount of high-quality steel.Therefore, it all can survey inspection to the used wire rope of various occasions.Be the indispensable inspection apparatus of various mine hoistings with wire rope.Its output value can reach tens million of even more than one hundred million units, and will be bigger with the economic benefit that it brings.
The present invention is to be applicable to that rope footpath is embodiment at 20～40 millimeters fault indicator.Fig. 6 is the block scheme of defectoscope.Directly input to by the Hall voltage of sensor (5) output and to simulate switch (way is identical with the sensing element number) (11).Signal after simulating switch process is sent into amplifier (12), and the signal after amplifying can be sent into A/D transducer (13) simultaneously and simulate multi-pen recorder (16).Send into microcomputer (14) through the signal of A/D transducer digitizing (13), carry out signal analysis, processing.Send into printer (15) afterwards, get broken wires and position.For ease of the check fracture of wire, on the panel of instrument, installed rope long number word display (17) again additional.Its sensor (5) is made up of 12 Hall elements with independent output loop.Fig. 3 is the inspection record curve of 12 road output transducers.1., 9. be in the waveform that simulates of 1 fracture of wire between the two adjacent sensing elements among the figure for fracture of wire,, and can find out obviously that these two fracture of wires are to be on two rope strands so two small form are on the same ordinate up and down.2. 4. 5. 8. be in the waveform of following 1 fracture of wire of sensing element for fracture of wire, they are in respectively on 4 rope strands.3. be under a sensing element, the waveform of the adjacent two concentrated fracture of wires of same section.7. be the waveform of 2 close proximity fracture of wires under an element.6. be the concentrated fracture of wire waveform of 3 close proximity under an element.Therefrom can obviously find out the distribution situation of fracture of wire on the same or close section on each rope strand.Represent and to offer a clear explanation and these 12 squiggles simulate squiggle by 1.That is to say that this annular multiple sensor is equivalent to check the fracture of wire of administrative area separately with 12 eyes division of labor.This has just improved the resolution characteristic to fracture of wire greatly.
The corrosion of wire rope also can be changed out Hall voltage to sensing element.Because this signal of sensor is not the transducing signal to whole garden perimeter surface, but single sensing element is to the transducing signal of the very little part in the surface in garden week (administrative area of 1 element), so to the corrosion wire rope, the signal to noise ratio (S/N ratio) of fracture of wire and corrosion signal has just improved greatly.
Fig. 4 represents principle of work of the present invention.Fig. 5 explanation, because the wire rope surface is rough and uneven in surface, the fracture site difference, the signal waveform of sensing element output is also different.A, c are the fracture of wire waveform of fracture when being in two bursts of contacted recessed pocket positions among the figure.B is the fracture of wire waveform of protruding back, and d is the waveform of big fracture.
Claims (5)
1, has the gauge head of excitation source, sensor and a steel rope fault defectoscope that the detection record device is formed by a kind of, it is characterized in that the sensor (5) in gauge head is to be made of 6～24 Hall elements (8) with independent output loop.
2,, it is characterized in that the sensor (5) in the gauge head is made of 12 Hall elements (8) with independent output loop, and be evenly distributed on the conplane circumference according to the described steel rope fault defectoscope of claim 1.
3,, it is characterized in that display device is by simulating switch (11), amplifier (12), A/D transducer (13), microcomputer (14), printer (15) and be combined into according to the described steel rope fault defectoscope of claim 1.
4,, it is characterized in that the sensor outside in the gauge head has installed a magnetic shielding cover of being made by two semicircle soft irons (7) additional according to claim 1,2 described steel rope fault defectoscopes.
5,, it is characterized in that guide piece is made up of the adjustable rubber wheel (2) that two groups of each three its planes are mutually hexagonal angle according to the described steel rope fault defectoscope of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85100207A CN85100207B (en) | 1985-04-01 | 1985-04-01 | Device for investigating the presence of flaw on steel rope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85100207A CN85100207B (en) | 1985-04-01 | 1985-04-01 | Device for investigating the presence of flaw on steel rope |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN85100207A CN85100207A (en) | 1987-01-24 |
| CN85100207B true CN85100207B (en) | 1987-07-01 |
Family
ID=4790976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN85100207A Expired CN85100207B (en) | 1985-04-01 | 1985-04-01 | Device for investigating the presence of flaw on steel rope |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN85100207B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4825525B2 (en) * | 2006-02-01 | 2011-11-30 | 株式会社日立ビルシステム | Wire rope flaw detector |
| JP4295774B2 (en) * | 2006-07-20 | 2009-07-15 | 株式会社日立ビルシステム | Wire rope flaw detector |
| JP4894620B2 (en) * | 2007-05-23 | 2012-03-14 | 株式会社日立製作所 | Wire rope flaw detector |
| DE202011001846U1 (en) * | 2011-01-24 | 2012-04-30 | Liebherr-Components Biberach Gmbh | Device for detecting the Ablegereife a high-strength fiber rope when used on hoists |
| CN102937623B (en) * | 2012-11-14 | 2015-06-24 | 杨旭 | Portable steel wire rope fault detection device |
| CN103454340B (en) * | 2013-08-15 | 2015-10-28 | 洛阳泰斯特探伤技术有限公司 | A kind of portable detection device for steel wire rope |
| CN104229597B (en) * | 2014-09-19 | 2016-03-23 | 洛阳泰斯特探伤技术有限公司 | The non-destructive detection device of the horizontal rope stretching of the in-service hoisting cable of cylindrical drum hoist |
| CN106959337A (en) * | 2017-05-03 | 2017-07-18 | 河南科技大学 | The open magnetic pumping damage of steel cable detecting system that declines of one kind |
| CN111003431B (en) * | 2019-11-13 | 2021-06-18 | 安徽驿星智能物流装备制造有限公司 | Storage rack shuttle car positioner |
-
1985
- 1985-04-01 CN CN85100207A patent/CN85100207B/en not_active Expired
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| Publication number | Publication date |
|---|---|
| CN85100207A (en) | 1987-01-24 |
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