CN109030620B - Portable wire rope appearance of detecting a flaw - Google Patents
Portable wire rope appearance of detecting a flaw Download PDFInfo
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- CN109030620B CN109030620B CN201811002685.8A CN201811002685A CN109030620B CN 109030620 B CN109030620 B CN 109030620B CN 201811002685 A CN201811002685 A CN 201811002685A CN 109030620 B CN109030620 B CN 109030620B
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- wire rope
- steel wire
- flaw
- magnetizing
- flaw detector
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 58
- 239000010959 steel Substances 0.000 claims abstract description 58
- 238000001514 detection method Methods 0.000 claims description 52
- 239000002184 metal Substances 0.000 claims description 35
- 230000000149 penetrating effect Effects 0.000 claims description 14
- 230000005415 magnetization Effects 0.000 claims description 12
- 239000004677 Nylon Substances 0.000 claims description 3
- 239000004973 liquid crystal related substance Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 238000012360 testing method Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000006698 induction Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 230000005674 electromagnetic induction Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
- G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
- G01N27/83—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws by investigating stray magnetic fields
- G01N27/85—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws by investigating stray magnetic fields using magnetographic methods
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
The invention relates to a portable steel wire rope flaw detector, which comprises a handheld instrument device, a magnetizing flaw detector and a driving device, wherein the driving device is arranged on the magnetizing flaw detector and drives the magnetizing flaw detector to move along a steel wire rope, the handheld instrument device is associated with the magnetizing flaw detector and the driving device, the magnetizing flaw detector comprises a magnetizing assembly, a flaw detector assembly and a bushing, the two ends of the magnetizing assembly are provided with symmetrically arranged bushings, the two ends of the flaw detector assembly are provided with symmetrically arranged bushings, the magnetizing assembly, the flaw detector assembly and the bushings are connected in series through a plurality of guide posts parallel to the steel wire rope into an integrated structure, the magnetizing assembly and the flaw detector assembly are all arranged on the guide posts in a sliding manner, the bushings are fixed on the guide posts, and a through hole for the steel wire rope to pass through is formed in the center of each bushing.
Description
Technical Field
The invention relates to a flaw detector, in particular to a portable steel wire rope flaw detector.
Background
In the running process of the steel wire rope, fatigue is generated due to pure mechanical effects such as bending, stretching, torsion and the like. Fatigue not only can form a large number of broken wires and broken strands, but also can form complete rope breakage instantly, especially when broken steel wires reach a certain number, rope breakage accidents can be possibly caused, and the occurrence of the problems can inevitably bring great hidden danger to the safe operation of equipment, and even cause serious casualties. Therefore, a portable steel wire rope breakage detection device based on the weak magnetic detection principle and high in detection efficiency is created. The traditional flaw detector needs to be magnetized and then detected, the operation mode is complex, radiation is easily caused to personnel in the detection process, and the detection efficiency is low.
Disclosure of Invention
The invention aims to solve the problems that the existing detector is easy to radiate detection personnel and has low detection efficiency, and provides a portable steel wire rope flaw detector.
The invention solves the technical problems, and adopts the following technical scheme:
The portable steel wire rope flaw detector comprises a handheld instrument device, a magnetizing flaw detector and a driving device, wherein the driving device is arranged on the magnetizing flaw detector and drives the magnetizing flaw detector to move along a steel wire rope, the handheld instrument device is associated with the magnetizing flaw detector and the driving device, the magnetizing flaw detector comprises a magnetizing component, a flaw detector component and a bushing, the two ends of the magnetizing component are provided with symmetrically arranged bushings, the two ends of the flaw detector are provided with symmetrically arranged bushings, the magnetizing component, the flaw detector and the bushings are connected in series into an integrated structure through a plurality of guide posts parallel to the steel wire rope, the magnetizing component and the flaw detector are both arranged on the guide posts in a sliding manner, the bushings are fixed on the guide posts, a through hole for the steel wire rope to pass through is formed in the center of each bushing,
The magnetizing component comprises magnetic columns and a pair of magnetic column fixing blocks which are symmetrically arranged at intervals and made of nylon materials, each magnetic column fixing block is formed by splicing a plurality of magnetic column fixing units, a rope hole penetrating through a steel wire rope is formed in the center of each magnetic column fixing block, a plurality of uniformly distributed magnetic column holes are formed in the outer circumference of each magnetic column fixing block, the length direction of each magnetic column hole is perpendicular to the steel wire rope, the magnetic columns are inserted in the magnetic column holes,
The flaw detection assembly comprises a pair of fixed metal plates and a plurality of sensors, wherein the fixed metal plates are formed by splicing a plurality of metal plate units, rope holes for penetrating steel wire ropes are formed in the center of the fixed metal plates, two ends of each sensor are fixed on the end faces of the metal plates, and all the sensors are mutually matched to form a columnar sensor detection area surrounding the steel wire ropes. The sensor adopts an inductance magnetic flux variable feedback compensation sensor, the technology is from a patent CN201020653597.7 and the technology of a three-dimensional magnetic induction bridge is from a patent CN201020633488.9, and the electromagnetic induction sensitivity and the signal to noise ratio are high. The plurality of sensor shells are circumferentially and uniformly distributed, so that the detection range of the detector is ensured, and damage and missing detection in the middle of the sensor can be avoided. The flaw detection assembly consists of four semicircular sensor fixing metal plates, the metal plates are provided with holes for being installed on the guide posts, and the sensor fixing holes are formed in the metal plates, so that the sensor positions are fixed through combined installation, and different types and different numbers of sensors can be tested. The sensor fixing sheet metal with various inner diameter specifications can simulate the detection bodies with different inner diameter specifications and is used for testing the steel wire ropes with different rope diameter specifications. And the horizontal distance between the sensor and the magnetizing assembly is adjustable, so that the magnetic fields of the magnetizing assembly and the steel wire rope are ensured to be in a sensitive area of a characteristic curve of the sensor.
The driving device adopts a stroke wheel device, one end of the stroke wheel device is installed on the bushing, the other end of the stroke wheel device is attached to the steel wire rope under the action of the spring, the bushing is driven to reciprocate in the length direction of the steel wire rope by the stroke wheel device, the magnetized flaw detection device is driven to reciprocate in the length direction of the steel wire rope by the guide post, the stroke wheel device is suitable for the requirements of different rope diameters under the action of the spring, and the stroke wheel device can be detached independently for cleaning. The stroke wheel device is internally provided with a speed sensor, and a pulse signal is obtained through friction rotation of the friction wheel and the steel wire rope, so that detection frequency, detection stroke and damage position information are obtained. The speed sensor can replace speed sensors of various specification types and is used for testing the working performance of speed sensors of different types.
The handheld instrument device comprises a signal processor, a display and a film button, wherein the signal processor is associated with the magnetization flaw detector and the driving device, the signal processor transmits detected information to the display, and the film button is associated with a control module of the signal processor so as to control the whole flaw detector.
The display adopts LCM liquid crystal display module.
The magnetic column fixing blocks are formed by splicing two semicircular magnetic column fixing units, each two magnetic column fixing units are combined into a circular fixing disc so as to enable the steel wire rope to enter the rope hole in the middle in an opening-closing mode, and a circle of through holes which are uniformly distributed and used for penetrating the guide columns are formed in the end face of each magnetic column fixing block.
The sensor fixing sheet metal is formed by splicing two semicircular sensor fixing sheet metal units, each two sensor fixing sheet metal units are combined into a circular fixing disc, so that a steel wire rope can enter a rope hole in the middle by opening and closing, and a circle of evenly distributed through holes for penetrating a guide post are formed in the end face of the sensor fixing sheet metal. The beneficial effects of the invention are as follows: the invention is convenient to carry and use, has better safety performance, and can ensure that the detection device can acquire the information of the leakage magnetic field of the steel wire rope under the condition of the induction contact related to the leakage magnetic field. The device can be used for detecting the steel wire rope in a single time under the condition of no shutdown, so that the traditional complex operation mode of magnetization before detection is changed, magnetization and detection are synchronously completed, no radiation is generated to personnel, the magnetic field environment of the steel wire rope is actively planned, and the detection efficiency is improved. The device can verify the curve characteristics and the detection effects of the magnetizing component and the detection body of the portable integrated detection device for the steel wire rope under the condition of different distances. The magnetizing assembly in the magnetizing flaw detection device can also use different specifications and different numbers of magnetic columns to adjust the magnetization intensity. Meanwhile, the flaw detection assembly can be provided with sensors with various specifications and different numbers. The motherboard type, speed sensor type, etc. may be replaced. By adjusting various parameters to carry out test records under different conditions and analyzing test data, the combination of parameters such as magnetization intensity, magnetizing assemblies and distance between the detecting bodies, sensor types, sensor number, sensor arrangement mode and the like and the influence of components with different types and specifications on the detection result can be found, so that the most suitable parameters are determined, and the most suitable components are selected.
Drawings
Fig. 1 is a schematic structural view of the present invention.
The graphic indicia: 1. bushing, 101, through hole, 102, guide pillar hole, 103, screw hole, 104, fixing bolt, 2, guide pillar, 3, flaw detection component, 301, fixed sheet metal, 302, sensor, 4, magnetization component, 401, magnetic pillar, 402, magnetic pillar fixed block, 5, drive arrangement.
Detailed Description
As shown in fig. 1, the specific embodiment is as follows:
The portable steel wire rope flaw detector comprises a handheld instrument device, a magnetizing flaw detector and a driving device 5, wherein the driving device 5 is arranged on the magnetizing flaw detector and drives the magnetizing flaw detector to move along a steel wire rope, the handheld instrument device is associated with the magnetizing flaw detector and the driving device, the magnetizing flaw detector comprises a magnetizing component 4, a flaw detector 3 and a bushing 1, the bushing 1 can adopt bushings of different types according to conditions, two ends of the magnetizing component 4 are provided with symmetrically arranged bushings 1, two ends of the flaw detector 3 are provided with symmetrically arranged bushings 1, the magnetizing component 4, the flaw detector 3 and the bushings 1 are connected in series into an integral structure through a plurality of guide posts 2 parallel to the steel wire rope, the magnetizing component 4 and the flaw detector 3 are both slidingly arranged on the guide posts 2, the bushings 1 are fixed on the guide posts 2, through holes 101 for the steel wire rope to pass through are formed in the centers of the bushings, guide post holes 102 penetrating the guide posts are formed in the end faces of the bushings, threaded holes 103 perpendicular to the guide post holes are formed in the circumferential surfaces of the bushings, the mounting bolts penetrating through the threaded holes are tightly abutted against the guide posts to realize the guide posts and bushing fixing the bushings, two freely separated by fixing bolts 104 after the two semicircular structure are spliced,
The magnetizing assembly 4 comprises a magnetic column 401 and a pair of magnetic column fixing blocks 402 which are symmetrically arranged at intervals and made of nylon materials, each magnetic column fixing block 402 is formed by splicing a plurality of magnetic column fixing units, a rope hole penetrating through a steel wire rope is formed in the center of each magnetic column fixing block 402, a plurality of uniformly distributed magnetic column holes are formed in the outer circumference of each magnetic column fixing block, the length direction of each magnetic column hole is perpendicular to the steel wire rope, the magnetic columns 401 are inserted into the magnetic column holes,
The flaw detection assembly 3 comprises a pair of fixed metal plates 301 and a plurality of sensors 302, wherein the fixed metal plates 301 are formed by splicing a plurality of metal plate units, rope holes for penetrating steel wire ropes are formed in the center of the fixed metal plates 301, two ends of each sensor are fixed on the end faces of the fixed metal plates, and all the sensors are matched with each other to form a columnar sensor detection area surrounding the steel wire ropes. The sensor adopts an inductance magnetic flux variable feedback compensation sensor, the technology is from a patent CN201020653597.7 and the technology of a three-dimensional magnetic induction bridge is from a patent CN201020633488.9, and the electromagnetic induction sensitivity and the signal to noise ratio are high. The plurality of sensor shells are circumferentially and uniformly distributed, so that the detection range of the detector is ensured, and damage and missing detection in the middle of the sensor can be avoided. The flaw detection assembly comprises four semicircular sensor fixing metal plates, the metal plates are provided with holes for being installed on the guide posts, and the sensor fixing holes are formed in the metal plates, so that the sensor positions are fixed through combined installation, and different types and different numbers of sensors can be tested. The sensor fixing sheet metal with various inner diameter specifications can simulate the detection bodies with different inner diameter specifications and is used for testing the steel wire ropes with different rope diameter specifications. And the horizontal distance between the sensor and the magnetizing assembly is adjustable, so that the magnetic fields of the magnetizing assembly and the steel wire rope are ensured to be in a sensitive area of a characteristic curve of the sensor.
The driving device 5 adopts a stroke wheel device, one end of the stroke wheel device is installed on the bushing, the other end of the stroke wheel device is attached to the steel wire rope under the action of the spring, the bushing is driven to reciprocate in the length direction of the steel wire rope by the stroke wheel device, the magnetized flaw detection device is driven to reciprocate in the length direction of the steel wire rope by the guide post, the stroke wheel device is suitable for the requirements of different rope diameters under the action of the spring, and the stroke wheel device can be detached independently for cleaning. The stroke wheel device is internally provided with a speed sensor, and a pulse signal is obtained through friction rotation of the friction wheel and the steel wire rope, so that detection frequency, detection stroke and damage position information are obtained. The speed sensor can replace speed sensors of various specification types and is used for testing the working performance of speed sensors of different types.
The handheld instrument device comprises a signal processor, a display and a film button, wherein the signal processor is associated with the magnetization flaw detector and the driving device, the signal processor transmits detected information to the display, and the film button is associated with a control module of the signal processor so as to control the whole flaw detector.
The display adopts LCM liquid crystal display module.
The magnetic column fixing blocks are formed by splicing two semicircular magnetic column fixing units, each two magnetic column fixing units are combined into a circular fixing disc so as to enable the steel wire rope to enter the rope hole in the middle in an opening-closing mode, and a circle of through holes which are uniformly distributed and used for penetrating the guide columns are formed in the end face of each magnetic column fixing block.
The sensor fixing sheet metal is formed by splicing two semicircular sensor fixing sheet metal units, each two sensor fixing sheet metal units are combined into a circular fixing disc, so that a steel wire rope can enter a rope hole in the middle by opening and closing, and a circle of evenly distributed through holes for penetrating a guide post are formed in the end face of the sensor fixing sheet metal.
After the magnetizing component is installed with the magnetic column and the flaw detection component is installed with the sensor, the magnetizing component and the flaw detection component are installed on the guide column, the bushings are fixed at the two ends of the magnetizing component and the flaw detection component, and after the distance between the magnetizing component and the flaw detection component is adjusted, the sensor and the handheld instrument are connected through the bus to detect the steel wire rope. The driving device drives the bushing to move, the bushing and the guide pillar are fixed to drive the guide pillar to move, at the moment, the magnetizing assembly and the flaw detection assembly slide on the guide pillar, but the bushings at the two ends of the magnetizing assembly and the flaw detection assembly drag the bushing to move on the steel wire rope, the magnetizing assembly forms a magnetic field in a detection area, the sensor converts received magnetic signals into electric signals and then inputs the electric signals into the signal processor, the output end of the signal processor is connected with the input end of the display, and detection signal data are processed and displayed on the display.
The detector and the handheld instrument are scanned on the steel wire rope by the hand, the machine is not required to be stopped, when the broken damage of the steel wire rope core occurs in the detection sensor area, the display interface of the handheld instrument can display an abnormal curve to prompt the detector that the damage exists in the coverage area of the sensor, and the detector can stop for further confirmation.
The technical scheme and the embodiment of the invention are not limited, and the technical scheme and the embodiment which are equivalent or have the same effect as those of the technical scheme and the embodiment of the invention are all within the protection scope of the invention.
Claims (6)
1. The utility model provides a portable wire rope appearance of detecting a flaw, includes handheld instrument device, magnetization flaw detection device and drive arrangement, and drive arrangement installs on magnetization flaw detection device and drives magnetization flaw detection device and remove along wire rope, and handheld instrument device all associates its characterized in that with magnetization flaw detection device and drive arrangement: the magnetizing flaw detector comprises a magnetizing component, a flaw detecting component and a bushing, wherein the two ends of the magnetizing component are provided with symmetrically arranged bushings, the two ends of the flaw detecting component are provided with symmetrically arranged bushings, the magnetizing component, the flaw detecting component and the bushing are connected in series into an integrated structure through a plurality of guide posts parallel to the steel wire rope, the magnetizing component and the flaw detecting component are both arranged on the guide posts in a sliding way, the bushing is fixed on the guide posts, the center of the bushing is provided with a through hole for the steel wire rope to pass through,
The magnetizing component comprises magnetic columns and a pair of magnetic column fixing blocks which are symmetrically arranged at intervals and made of nylon materials, each magnetic column fixing block is formed by splicing a plurality of magnetic column fixing units, a rope hole penetrating through a steel wire rope is formed in the center of each magnetic column fixing block, a plurality of uniformly distributed magnetic column holes are formed in the outer circumference of each magnetic column fixing block, the length direction of each magnetic column hole is perpendicular to the steel wire rope, the magnetic columns are inserted in the magnetic column holes,
The flaw detection assembly comprises a pair of fixed metal plates and a plurality of sensors, wherein the fixed metal plates are formed by splicing a plurality of metal plate units, rope holes for penetrating steel wire ropes are formed in the center of the fixed metal plates, two ends of each sensor are fixed on the end faces of the metal plates, and all the sensors are mutually matched to form a columnar sensor detection area surrounding the steel wire ropes.
2. A portable wire rope flaw detector as defined in claim 1 wherein: the driving device adopts a stroke wheel device, one end of the stroke wheel device is arranged on the bushing, the other end of the stroke wheel device is attached to the steel wire rope under the action of the spring, the bushing is driven to reciprocate in the length direction of the steel wire rope by the stroke wheel device, and the magnetized flaw detection device is driven to reciprocate in the length direction of the steel wire rope by the guide post.
3. A portable wire rope flaw detector as defined in claim 1 wherein: the handheld instrument device comprises a signal processor, a display and a film button, wherein the signal processor is associated with the magnetization flaw detector and the driving device, the signal processor transmits detected information to the display, and the film button is associated with a control module of the signal processor so as to control the whole flaw detector.
4. A portable wire rope flaw detector as defined in claim 3 wherein: the display adopts LCM liquid crystal display module.
5. A portable wire rope flaw detector as defined in claim 1 wherein: the magnetic column fixing block is formed by splicing two semicircular magnetic column fixing units, and a circle of through holes which are uniformly distributed and used for penetrating the guide columns are formed in the end face of the magnetic column fixing block.
6. A portable wire rope flaw detector as defined in claim 1 wherein: the fixed metal plate is formed by splicing two semicircular fixed metal plate units, and a circle of through holes which are uniformly distributed and used for penetrating the guide posts are formed in the end face of the fixed metal plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811002685.8A CN109030620B (en) | 2018-08-30 | 2018-08-30 | Portable wire rope appearance of detecting a flaw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811002685.8A CN109030620B (en) | 2018-08-30 | 2018-08-30 | Portable wire rope appearance of detecting a flaw |
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| Publication Number | Publication Date |
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| CN109030620A CN109030620A (en) | 2018-12-18 |
| CN109030620B true CN109030620B (en) | 2024-05-03 |
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| CN201811002685.8A Active CN109030620B (en) | 2018-08-30 | 2018-08-30 | Portable wire rope appearance of detecting a flaw |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113075286B (en) * | 2021-03-30 | 2021-12-21 | 中国矿业大学(北京) | Steel wire rope flaw detector with permanent magnet capable of moving axially |
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|---|---|---|---|---|
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