CN210894215U - Steel wire rope damage detection device - Google Patents
Steel wire rope damage detection device Download PDFInfo
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- CN210894215U CN210894215U CN201921566671.9U CN201921566671U CN210894215U CN 210894215 U CN210894215 U CN 210894215U CN 201921566671 U CN201921566671 U CN 201921566671U CN 210894215 U CN210894215 U CN 210894215U
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- wire rope
- steel wire
- magnetic
- housing
- sensor shell
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Abstract
The utility model discloses a steel wire rope damage detection device, which solves the problems of insensitive response to tiny defects and lower detection precision in the prior art, and has the effects of sensitive response to tiny defects and small data processing capacity; the technical scheme is as follows: the sensor comprises a sensor shell, wherein magnetizing devices are respectively arranged at two ends of the sensor shell, and each magnetizing device is provided with a through hole for a steel wire rope to pass through, so that the sensor shell, the magnetizing devices and the steel wire rope form a magnetic flux loop; two groups of magnetism gathering devices for collecting the magnetic leakage field on the surface of the steel wire rope are arranged in the sensor shell, and the magnetism gathering devices are fixed with the inner wall of the sensor shell through nylon guide sleeves; and a detection circuit board for detecting the leakage magnetic field is fixed between the magnetic gathering devices.
Description
Technical Field
The utility model relates to a wire rope detects technical field, especially relates to a wire rope damage detection device.
Background
With the continuous development of society, the application of steel wire ropes is wider and wider, and meanwhile, the safety of the steel wire ropes is concerned by people more and more, so that the damage condition of the steel wire ropes needs to be detected on line. The inventor finds that the conventional steel wire rope detection device still has the problems of low precision and insensitive response to tiny defects, so that the detection omission risks. In addition, in order to increase the detection precision, a mode of increasing a detection channel is adopted by a plurality of instruments, which increases the difficulty of signal processing to a certain extent and reduces the resolution of the instruments.
SUMMERY OF THE UTILITY MODEL
In order to overcome the not enough of prior art, the utility model provides a wire rope damage detection device, it has the effect sensitive, that data processing volume is little to small defect reaction.
The utility model adopts the following technical proposal:
a steel wire rope damage detection device comprises a sensor shell, wherein magnetizing devices are respectively installed at two ends of the sensor shell, and each magnetizing device is provided with a through hole for a steel wire rope to pass through, so that the sensor shell, the magnetizing devices and the steel wire rope form a magnetic flux loop;
two groups of magnetism gathering devices for collecting the magnetic leakage field on the surface of the steel wire rope are arranged in the sensor shell, and the magnetism gathering devices are fixed with the inner wall of the sensor shell through nylon guide sleeves; and a detection circuit board for detecting the leakage magnetic field is fixed between the magnetic gathering devices.
Furthermore, the magnetism gathering device comprises a magnetism gathering ring, and one side of the magnetism gathering ring, which is close to the detection circuit board, is provided with a plurality of magnetic conduction bosses, so that magnetic flux gathers at the positions of the magnetic conduction bosses.
Furthermore, the magnet gathering ring is fixed in a groove on the side surface of the nylon guide sleeve, and the nylon guide sleeve is clamped in the groove on the inner wall of the sensor shell.
Furthermore, the detection circuit board is provided with a plurality of Hall elements, and detection signals of the Hall elements are connected with the signal processing device through the zeroing amplification module, the addition amplification module and the A/D conversion module in sequence.
Furthermore, the installation position of the Hall element corresponds to the position of the magnetic conduction boss.
Further, the sensor housing comprises a first housing and a second housing which are buckled together to form a closed structure, and the magnetizing device comprises a first permanent magnet and a second permanent magnet which are symmetrically distributed.
Furthermore, the first permanent magnet and the second permanent magnet are tile-shaped permanent magnets magnetized in the radial direction, and the magnetizing directions of the permanent magnets at two ends of the sensor shell are different.
Further, the first shell and the second shell are respectively provided with a cavity for mounting the magnetism gathering device, and the end parts of the first shell and the second shell have set thicknesses.
Further, the sensor shell is made of a magnetic conductive material.
A steel wire rope damage detection method adopts the detection device, when the detection device works, a steel wire rope to be detected passes through a sensor shell, a nylon guide sleeve, a detection circuit board and a middle gap of a magnetism gathering device, and a magnetization device magnetizes the steel wire rope to be detected to be saturated along the axial direction, so that a complete magnetic loop is formed among the sensor shell, the magnetization device and the steel wire rope to be detected;
when a defect exists in the steel wire rope to be detected, a leakage magnetic field is detected by the Hall element through the collection of the magnetism gathering device, corresponding Hall potential change is generated in the Hall element, the analog voltage value is processed by the zeroing amplification module, the addition amplification module and the A/D conversion module and then is sent to the signal processing module, the signal processing device processes an obtained digital quantity signal and extracts characteristic quantity, and the damage degree of the steel wire rope is obtained through contrastive analysis with a standard value.
Compared with the prior art, the beneficial effects of the utility model are that:
(1) the utility model adopts the Hall element to detect the magnetic leakage flux of the steel wire rope to judge the existence condition and the characteristic of the defect, and obtains the damage condition of the steel wire rope through the analysis of the detection signal, thereby realizing the quantification of the internal and external defects of the steel wire rope;
(2) the utility model adopts the magnetism gathering ring to collect the magnetic leakage field on the surface of the steel wire rope, thereby improving the identification capability of the utility model to tiny defects and increasing the signal-to-noise ratio of the detection signal; the magnetism gathering ring has the functions of homogenizing the magnetic field and eliminating the magnetic leakage field among the strands, and the detection result can be optimized on hardware; the number of Hall elements used by the magnetic gathering ring is greatly reduced, so that the magnitude of signal real-time data processing capacity is reduced, and the resolution of the system is improved;
(3) the utility model discloses a sensor housing, permanent magnet, nylon guide pin bushing, gather magnetic ring and detection circuit board and all adopt the subdivision formula structure, and this structure is convenient to be dismantled and adjust the sensor, has improved the convenience of field usage.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
Fig. 1 is a schematic structural diagram of a first embodiment of the present invention;
fig. 2 is a schematic view of an internal structure of a first embodiment of the present invention;
fig. 3 is a schematic view of a magnetic flux collecting semi-ring structure according to a first embodiment of the present invention;
fig. 4 is a block diagram of a signal processing circuit according to a first embodiment of the present invention;
fig. 5 is a circuit diagram of a zeroing amplification module according to a first embodiment of the present invention;
fig. 6 is a circuit diagram of an addition amplifying module according to a first embodiment of the present invention;
fig. 7 is a circuit diagram of an a/D conversion module according to a first embodiment of the present invention;
the magnetic detection device comprises a Hall element 1, a Hall element 2, a magnetism gathering semi-ring 3, a magnetic conduction boss 4, a groove 5, a detection circuit board 6, a second shell 7, a second permanent magnet 8, a first permanent magnet 9, a first shell 10, a through hole 11 and a nylon guide sleeve.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an", and/or "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof;
for convenience of description, the words "up", "down", "left" and "right" when appearing in this application are intended only to designate directions that are consistent with the up, down, left and right directions of the drawings themselves, and not to limit the structure, but merely to facilitate description of the invention and to simplify description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be considered as limiting the application.
The terms "mounted", "connected", "fixed", and the like in the present application should be understood broadly, and for example, the terms "mounted", "connected", and "fixed" may be fixedly connected, detachably connected, or integrated; the two components can be connected mechanically or electrically, directly or indirectly through an intermediate medium, or connected internally or in an interaction relationship, and specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Just as the background art introduces, exist among the prior art to the insensitive, the lower not enough of detection precision of small defect reaction, in order to solve above-mentioned technical problem, the utility model provides a wire rope damage detection device.
The first embodiment is as follows:
the present invention will be described in detail with reference to the accompanying drawings 1-7, and specifically, the structure is as follows:
the embodiment provides a wire rope damage detection device, including sensor housing, magnetization unit, gather magnetic device, detection circuitry board and signal processing device, wherein, magnetization unit is installed respectively at sensor housing's both ends, gathers inside magnetic device is fixed in sensor housing, and signal processing device passes through the wire and links to each other with the inside detection circuitry board of sensor housing.
When the sensor is used, the steel wire rope to be detected, the sensor shell and the magnetizing device form a magnetic flux loop, and the magnetizing device provides a magnetic field to magnetize and saturate the steel wire rope so that circulating magnetic flux exists in the steel wire rope; because the magnetic flux circulating in the steel wire rope in a magnetic saturation state is in direct proportion to the sectional area of the metal, if the steel wire rope is damaged, a leakage magnetic field appears on the surface of the steel wire rope at the defect position, and the damage condition of the steel wire rope can be obtained by detecting the leakage magnetic field on the surface of the steel wire rope by using a detection element on a detection circuit board.
Through holes for the steel wire rope to be detected to pass through are formed in the middle of the sensor shell, the magnetizing device, the magnetism gathering device and the detection circuit board. In the embodiment, in order to facilitate the assembly and disassembly of the device, the device is arranged in a symmetrical structure, namely the sensor shell, the magnetizing device, the magnetism gathering device and the detection circuit board are all composed of two symmetrical parts.
The sensor shell comprises a first shell 9 and a second shell 6, and plays roles of shielding interference, protecting internal elements and conducting magnetic flux, and is made of a magnetic conduction material. In consideration of the portability of the structure, the present embodiment sets the sensor housing to be a cylindrical structure having a cavity inside, i.e., the first housing 9 and the second housing 6 form a closed cylindrical housing structure. The ends of the first shell 9 and the second shell 6 have a set thickness, and the specific thickness is related to the thickness of the permanent magnet; the length of the first housing 9 and the second housing 6 is selected taking into account the distance between the two permanent magnets so that no interaction occurs between the two permanent magnets.
The magnetizing device is a permanent magnet, the permanent magnet comprises a first permanent magnet 8 and a second permanent magnet 7, the first permanent magnet 8 and the second permanent magnet 7 are tile-shaped permanent magnets adopting radial magnetization, and the permanent magnets at two ends of the sensor shell are different in magnetization direction. In this embodiment, as the first permanent magnet 8 and the second permanent magnet 7, ru-fe-b permanent magnets having good magnetization performance are used.
The magnetic gathering devices are two groups and used for collecting leakage magnetic fields on the surface of the steel wire rope, the two groups of magnetic gathering devices are arranged in a cavity inside the sensor shell at intervals, and a detection circuit board 5 is arranged between the two groups of magnetic gathering devices. The magnetism gathering device comprises magnetism gathering rings, each magnetism gathering ring is composed of two magnetism gathering half rings 2, and one side, close to the detection circuit board 5, of each magnetism gathering half ring 2 is provided with a plurality of magnetic conduction bosses 3, as shown in fig. 3, so that magnetic fluxes gather at the positions of the magnetic conduction bosses 3 to facilitate detection.
In this embodiment, the magnetic conduction boss 3 is a column, strip, square or other shape structure protruding from the magnetic gathering half ring 2, as long as the magnetic conduction function can be achieved.
As shown in fig. 2, the magnetism-gathering half ring 2 is fixed on one side of a nylon guide sleeve 11, and the nylon guide sleeve 11 is provided with a groove for bearing the magnetism-gathering half ring 2. The inner wall of the sensor shell is provided with a groove 4, and the nylon guide sleeve 11 is clamped in the groove 4. In this embodiment, the magnetism-gathering half ring 2 is made of industrial pure iron with good magnetic permeability.
The detection circuit board 5 is provided with a plurality of Hall elements 1, and the installation positions of the Hall elements 1 correspond to the positions of the magnetic conduction bosses 3; the Hall element 1 circumferentially surrounds the steel wire rope to be tested. In this embodiment, the model of the hall element 1 is selected as a1301, and this hall element can be used for linear detection of a magnetic field, providing a voltage output proportional to the magnetic field used.
As shown in fig. 4, the detection signal of the hall element 1 is connected to the signal processing device sequentially through the zeroing amplification module, the adding amplification module and the a/D conversion module, the circuit of the zeroing amplification module is shown in fig. 5, the adding amplification module is shown in fig. 6, and the a/D conversion module is shown in fig. 6. The signal processing device comprises a PC or a singlechip and a display device, and has a data processing function and a display function. The specific structure is the prior art and is not described herein.
Adopt and gather magnetic device and collect the magnetic leakage field on wire rope surface, wherein gather magnetic device and have the advantage that increases signal to noise ratio, homogenization magnetic field and reduction signal data throughput, can effectual improvement detect the precision. The leakage magnetic field formed at the defect is collected by the magnetism gathering device and flows to the Hall element 1, the change of the magnetic flux can cause the change of the Hall potential in the Hall element 1 to form an analog voltage value, and then the voltage signal is processed by the detection circuit board to be subjected to system zeroing, addition amplification, A/D conversion and the like and is sent to the signal processing device. The signal processing device can distinguish the type and damage degree of the defect of the steel wire rope to be detected through the processed signal.
In the detection device of the embodiment, when the detection device works, the steel wire rope to be detected passes through the sensor shell, the nylon guide sleeve 11, the detection circuit board 5 and the middle gap (through hole) of the magnetism gathering device, and the permanent magnet magnetizes the steel wire rope to be detected to saturation along the axial direction, so that a complete magnetic loop is formed among the sensor shell, the permanent magnet and the steel wire rope to be detected.
When a defect exists in the steel wire rope to be detected, a leakage magnetic field is detected by the Hall element 1 through the collection of the magnetism gathering semi-ring 2, corresponding Hall potential change is generated in the Hall element 1, the analog voltage value is processed by the zeroing amplification module, the addition amplification module and the A/D conversion module and then is sent to the signal processing module, the signal processing device processes an obtained digital quantity signal and extracts characteristic quantity, and the damage degree of the steel wire rope is obtained through the contrastive analysis of the digital quantity signal and a standard value.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (9)
1. A steel wire rope damage detection device is characterized by comprising a sensor shell, wherein magnetizing devices are respectively arranged at two ends of the sensor shell, and each magnetizing device is provided with a through hole for a steel wire rope to pass through, so that the sensor shell, the magnetizing devices and the steel wire rope form a magnetic flux loop;
two groups of magnetism gathering devices for collecting the magnetic leakage field on the surface of the steel wire rope are arranged in the sensor shell, and the magnetism gathering devices are fixed with the inner wall of the sensor shell through nylon guide sleeves; and a detection circuit board for detecting the leakage magnetic field is fixed between the magnetic gathering devices.
2. The apparatus as claimed in claim 1, wherein the magnetic collecting means comprises a magnetic collecting ring having a plurality of magnetic conductive bosses on a side thereof adjacent to the detection circuit board, so that the magnetic flux is collected at the magnetic conductive bosses.
3. The apparatus as claimed in claim 2, wherein the magnetic focusing ring is fixed in a groove on a side surface of the nylon guide sleeve, and the nylon guide sleeve is clamped in a groove on an inner wall of the sensor housing.
4. The steel wire rope damage detection device according to claim 2, wherein the detection circuit board is provided with a plurality of Hall elements, and detection signals of the Hall elements are connected with the signal processing device sequentially through the zeroing amplification module, the addition amplification module and the A/D conversion module.
5. The device for detecting damage to the steel wire rope according to claim 4, wherein the hall element is mounted at a position corresponding to the position of the magnetically conductive boss.
6. The apparatus as claimed in claim 1, wherein the sensor housing comprises a first housing and a second housing that snap together to form a closed structure, and the magnetizing means comprises a first permanent magnet and a second permanent magnet that are symmetrically distributed.
7. The device for detecting damage to a steel wire rope according to claim 6, wherein the first permanent magnet and the second permanent magnet are tile-shaped permanent magnets magnetized in radial directions, and the permanent magnets at two ends of the sensor housing are magnetized in different directions.
8. The device for detecting damage to the steel wire rope according to claim 6, wherein the first housing and the second housing each have a cavity for mounting the magnetism collecting device therein, and the ends of the first housing and the second housing have a predetermined thickness.
9. The apparatus of claim 1, wherein the sensor housing is made of a magnetically conductive material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921566671.9U CN210894215U (en) | 2019-09-18 | 2019-09-18 | Steel wire rope damage detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921566671.9U CN210894215U (en) | 2019-09-18 | 2019-09-18 | Steel wire rope damage detection device |
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| Publication Number | Publication Date |
|---|---|
| CN210894215U true CN210894215U (en) | 2020-06-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921566671.9U Expired - Fee Related CN210894215U (en) | 2019-09-18 | 2019-09-18 | Steel wire rope damage detection device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110632169A (en) * | 2019-09-18 | 2019-12-31 | 长春理工大学 | Steel wire rope damage detection device and method |
| CN112161561A (en) * | 2020-08-20 | 2021-01-01 | 鞍钢集团北京研究院有限公司 | Steel wire rope diameter deviation measuring device and steel wire rope diameter deviation measuring method |
| CN112730602A (en) * | 2020-12-11 | 2021-04-30 | 浙江大学 | Device and method for detecting defects of hanging steel wires of front window sliding door of biological safety cabinet |
-
2019
- 2019-09-18 CN CN201921566671.9U patent/CN210894215U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110632169A (en) * | 2019-09-18 | 2019-12-31 | 长春理工大学 | Steel wire rope damage detection device and method |
| CN112161561A (en) * | 2020-08-20 | 2021-01-01 | 鞍钢集团北京研究院有限公司 | Steel wire rope diameter deviation measuring device and steel wire rope diameter deviation measuring method |
| CN112730602A (en) * | 2020-12-11 | 2021-04-30 | 浙江大学 | Device and method for detecting defects of hanging steel wires of front window sliding door of biological safety cabinet |
| CN112730602B (en) * | 2020-12-11 | 2024-04-23 | 浙江大学 | Device and method for detecting defects of suspended steel wires of front window sliding door of biosafety cabinet |
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Granted publication date: 20200630 Termination date: 20210918 |