CN112083058B - Signal acquisition and processing device suitable for multi-row pulley block steel wire rope broken wire detection - Google Patents
Signal acquisition and processing device suitable for multi-row pulley block steel wire rope broken wire detection Download PDFInfo
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- CN112083058B CN112083058B CN202010832259.8A CN202010832259A CN112083058B CN 112083058 B CN112083058 B CN 112083058B CN 202010832259 A CN202010832259 A CN 202010832259A CN 112083058 B CN112083058 B CN 112083058B
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- electromagnet
- wire rope
- steel wire
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 41
- 239000010959 steel Substances 0.000 title claims abstract description 41
- 238000001514 detection method Methods 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 description 7
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 230000008569 process Effects 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
Abstract
A signal acquisition and processing device suitable for multi-row pulley block steel wire rope broken wire detection comprises an electromagnet, a Hall module, a permanent magnet, a power module and a signal acquisition and processing module. The electromagnet and the Hall module are matched to form a circular ring structure, a closed circular hole is formed in the middle of the circular ring structure, the steel wire rope penetrates through the circular hole, the permanent magnet is fixed on the surface of the Hall module, the power module is respectively connected with the electromagnet and the permanent magnet, and the Hall module is connected with the signal acquisition and processing module. The signal acquisition and processing device suitable for multi-row pulley block steel wire rope breakage detection greatly improves the acquisition efficiency of steel wire rope breakage signals for ship lifts, and is simple and convenient to operate.
Description
Technical Field
The invention relates to the technical field of wire rope breakage detection, in particular to a signal acquisition and processing device suitable for multi-row pulley block wire rope breakage detection.
Background
During the operation of the ship lift, the wire rope plays an important role. During the lifting and lowering of the hold, the wire rope is subjected to a great tensile stress, the mechanical properties of which will directly influence whether the ship lift can be operated safely, but for large hoisting machines like ship lifts accidents are never allowed, otherwise the consequences will be extremely disastrous. Therefore, the staff has to regularly check the mechanical properties of the wire rope, wherein broken wire detection is particularly important. In the past wire breakage detection, the main method adopted was the observation method, and since the surface of the wire rope is entirely covered with thick grease, the reliability of this method has yet to be improved. In the aspect of wire breakage detection of a steel wire rope, the most applied or magnetic leakage detection method is adopted, and the conventional method of the magnetic leakage detection method is to attach a Hall module on the surface of the detected steel wire rope, so that the method is complex in operation and easy to generate the magnetic leakage phenomenon.
Disclosure of Invention
In order to solve the technical problems, the invention provides a signal acquisition and processing device suitable for multi-row pulley block steel wire rope breakage detection, which can ensure that magnetic flux leakage signals can be fully acquired and processed while the steel wire rope moves; meanwhile, the device has the advantages of easy disassembly and assembly and simple operation, and is suitable for continuous detection operation of the steel wire ropes with the multi-row pulley blocks.
The technical scheme adopted by the invention is as follows:
a signal acquisition and processing device suitable for multi-row pulley block steel wire rope broken wire detection comprises an electromagnet, a Hall module, a permanent magnet, a power module and a signal acquisition and processing module. The electromagnet and the Hall module are matched to form a circular ring structure, a closed circular hole is formed in the middle of the circular ring structure, the steel wire rope penetrates through the circular hole, the permanent magnet is fixed on the surface of the Hall module, the power module is respectively connected with the electromagnet and the permanent magnet, and the Hall module is connected with the signal acquisition and processing module.
The power supply module is used for outputting a high-frequency alternating current constant current power supply and a constant current power supply, the high-frequency alternating current constant current power supply is used for providing a power supply for the electromagnet, and the constant current power supply is used for providing a power supply for the Hall module.
The high-frequency alternating current constant current power supply output port of the power supply module is communicated with the electromagnet through a cable, and the connection part of the cable and the electromagnet is in a detachable quick connector mode.
The Hall module and the electromagnet mounting surface are of mutually matched wedge-shaped structures, and play a role in positioning and guiding.
The Hall module and the electromagnet are respectively arranged on the first bottom plate and the second bottom plate;
the device also comprises a first base and a second base, wherein a first guide rail slide block and a second guide rail slide block are respectively arranged on the first base and the second base; the first base plate is matched with the first base through the first guide rail sliding block, the second base plate is matched with the second base through the second guide rail sliding block, and the Hall module and the electromagnet move in opposite directions along the radial direction of the steel wire rope through the first guide rail sliding block and the second guide rail sliding block respectively.
Four travelling wheels and a guide wheel are arranged on the bottom surfaces of the first base and the second base, the wheel grooves on the guide wheel are assembled with the track, and the length of the track is greater than that of a row of pulley blocks. The moving stroke of the device in the track can be ensured to cover the range of a row of pulley blocks, and all steel wire ropes in the range are detected, so that the rapid movement and positioning of the device are realized.
The cross section of the electromagnet is of a smaller arc structure with the arc length smaller than the semicircular arc length, the cross section of the Hall module is of a larger arc structure with the arc length larger than the semicircular arc length, and the smaller arc structure and the larger arc structure are matched to form a circular ring structure.
The signal acquisition and processing device suitable for multi-row pulley block steel wire rope breakage detection greatly improves the acquisition efficiency of steel wire rope breakage signals for ship lifts, and is simple and convenient to operate.
Drawings
Fig. 1 is a schematic diagram of a front view mounting structure of the present invention.
Fig. 2 is an enlarged view at a of fig. 1.
Fig. 3 is a schematic side view of the mounting structure of the present invention.
Fig. 4 is an enlarged view at B of fig. 3.
Fig. 5 is a schematic structural view of the present invention.
Fig. 6 is an assembly schematic diagram of an electromagnet and a hall module according to the present invention.
Detailed Description
As shown in fig. 1 to 6, a signal acquisition and processing device suitable for multi-row pulley block steel wire rope breakage detection comprises an electromagnet 3, a hall module 4, a permanent magnet 5, a power supply module 6 and a signal acquisition and processing module 7. The steel wire rope 2 is positioned on the pulley block 1.
The electromagnet 3 and the Hall module 4 are matched to form a circular ring structure, a closed circular hole is formed in the middle of the circular ring structure, the steel wire rope 2 penetrates through the circular hole, the permanent magnet 5 is fixed on the surface of the Hall module 4, the power module 6 is respectively connected with the electromagnet 3 and the permanent magnet 5, and the Hall module 4 is connected with the signal acquisition and processing module 7.
The power supply module 6 is used for outputting a high-frequency alternating current constant current power supply and a constant current power supply, the high-frequency alternating current constant current power supply is used for providing a power supply for the electromagnet 3, and the constant current power supply is used for providing a power supply for the Hall module 4.
The high-frequency alternating current constant current power supply output port of the power supply module 6 is communicated with the electromagnet 3 through a cable, and the connection part of the cable and the electromagnet 3 is in a detachable quick connector form.
The installation surfaces of the Hall module 4 and the electromagnet 3 are wedge-shaped structures matched with each other, and the positioning and guiding functions are achieved.
The Hall module 4 and the electromagnet 3 are respectively arranged on the first bottom plate 8 and the second bottom plate;
the device also comprises a first base 10 and a second base, wherein a first guide rail sliding block 9 and a second guide rail sliding block are respectively arranged on the first base 10 and the second base.
The first bottom plate 8 is matched with the first base 10 through the first guide rail sliding block 9, and the second bottom plate is matched with the second base through the second guide rail sliding block. The slide block of the guide rail slide block is fixed at the bottom of the bottom plate. The handle is arranged on the bottom plate. The handle is operated, so that the bottom plate 8 can conveniently move along the guide rail, and the electromagnet 3 and the Hall module 4 can be separated or folded.
As seen in fig. 2, the power module 6 is placed on the first base plate 8, and the power module 6 and the first base plate 8 move synchronously, so that secondary carrying is avoided.
The Hall module 4 and the electromagnet 3 move in opposite directions along the radial direction of the steel wire rope 2 through the first guide rail sliding block and the second guide rail sliding block respectively.
Four travelling wheels 11 and a guide wheel 12 are arranged on the bottom surfaces of the first base 10 and the second base, a wheel groove on the guide wheel 12 is assembled with a track 13, and the length of the track 13 is greater than that of a row of pulley blocks.
The cross section of the electromagnet 3 is of a smaller arc structure with the arc length smaller than the semicircular arc length, the cross section of the Hall module 4 is of a larger arc structure with the arc length larger than the semicircular arc length, and the smaller arc structure and the larger arc structure are matched to form a circular ring structure.
Make hall module 4 and electro-magnet 3 faying face be less than cross the centre of a circle cross-section, hall module 4 parcel area increases, improves the detection accuracy, and wire rope is at the removal in-process simultaneously, and the influence of the interaction force with detection device to the faying face is less, guarantees device stability. The electromagnet 3 and the Hall module 4 are assembled to form a closed round hole, the steel wire rope 2 penetrates through the round hole, and the diameter of the steel wire rope 2 is smaller than that of the round hole.
The Hall module 4 comprises a plurality of magnetic Hall sensors SS94A2D, and the magnetic Hall sensors SS94A2D are embedded in an arc structure and uniformly arranged along a circle so as to facilitate the whole movement; the device does not need to be singly and repeatedly attached to the detected steel wire rope, has high detection precision and reduces the labor capacity.
The signal acquisition and processing module 7 comprises an amplifier LM741, an A/D converter ADC0809, a singlechip AT89C51, a nixie tube and a buzzer; the Hall module 4 is connected with the amplifier LM741, the amplifier LM741 is connected with the A/D converter ADC0809, the A/D converter ADC0809 is connected with the singlechip AT89C51, and the singlechip AT89C51 is respectively connected with the nixie tube and the buzzer.
The magnetic leakage signal is sensed by the Hall module 4 to form a voltage signal output, the A/D converter ADC0809 carries out analog-to-digital conversion on the transmitted analog voltage signal, then carries out data processing through the singlechip AT89C51, sends data to the nixie tube and displays the data, and meanwhile, the buzzer alarms to work. The broken wire condition of the steel wire is detected by detecting the magnetic leakage of the steel wire rope, so that the method is simple and intelligent, the result is reliable, and the interference of some human factors is eliminated.
The power module 6 outputs a high-frequency alternating current constant current power supply to energize the electromagnet 3, the electromagnet 3 is energized and automatically adsorbed with the permanent magnet 5, and when the steel wire rope 2 moves, the power module 6 outputs a constant current power supply to energize the Hall module 4; the signal acquisition and processing module 7 acquires and processes the wire breakage signal of the steel wire rope 2; after the signal acquisition processing is finished, the electromagnet 3 is powered off, the electromagnet 3 and the Hall module 4 are operated to move in opposite directions along the guide rail sliding block until the electromagnet is completely disconnected, and the two bases are moved to the position of the next steel wire rope along the guide rail, so that the signal acquisition is repeated.
Working principle:
the two bases move along the track 13, the electromagnet 3 and the Hall module 4 reach the position of the steel wire rope 2 to be detected, the electromagnet 3 and the Hall module 4 are operated to be close to each other along the guide rail sliding block 9, the steel wire rope 2 is positioned in a closed round hole formed between the electromagnet 3 and the Hall module 4, the power module 6 outputs a high-frequency alternating current constant current power supply to energize the electromagnet 3, the electromagnet 3 is tightly adsorbed with the permanent magnet 5 on the surface of the Hall module 4 after magnetism is obtained, when the steel wire rope moves, the power module 6 outputs the constant current power supply to energize the Hall module 4, and the Hall module 4 acquires a wire breakage signal to enter the signal acquisition and processing module 7.
After the signal acquisition is finished, the electromagnet 3 is powered off, the Hall module 4 is disconnected from the electromagnet 3, the electromagnet 3 and the Hall module 4 are operated to move in opposite directions along the guide rail sliding block until the electromagnet is completely disconnected, the two bases are operated to move along the rail 13, the electromagnet 3 and the Hall module 4 reach the position of the next steel wire rope 2 to be detected, and the wire breakage signal acquisition and the processing of the next steel wire rope are carried out.
Claims (6)
1. The utility model provides a signal acquisition and processing apparatus suitable for multirow assembly pulley wire rope broken wire detects, includes electro-magnet (3), hall module (4), permanent magnet (5), power module (6), signal acquisition and processing module (7), its characterized in that: the electromagnet (3) and the Hall module (4) are matched to form a circular ring structure, a closed circular hole is formed in the middle of the circular ring structure, the steel wire rope (2) penetrates through the circular hole, the permanent magnet (5) is fixed on the surface of the Hall module (4), the power module (6) is respectively connected with the electromagnet (3) and the permanent magnet (5), and the Hall module (4) is connected with the signal acquisition and processing module (7);
the Hall module (4) and the electromagnet (3) are respectively arranged on the first bottom plate (8) and the second bottom plate;
the device also comprises a first base (10) and a second base, wherein a first guide rail sliding block (9) and a second guide rail sliding block are respectively arranged on the first base (10) and the second base;
the first bottom plate (8) is matched with the first base (10) through a first guide rail sliding block (9), the second bottom plate is matched with the second base through a second guide rail sliding block,
the Hall module (4) and the electromagnet (3) move in opposite directions along the radial direction of the steel wire rope (2) through the first guide rail sliding block and the second guide rail sliding block respectively.
2. The signal acquisition and processing device suitable for multi-row pulley block steel wire rope breakage detection according to claim 1, wherein: the power supply module (6) is used for outputting a high-frequency alternating current constant current power supply and a constant current power supply, the high-frequency alternating current constant current power supply is used for providing a power supply for the electromagnet (3), and the constant current power supply is used for providing a power supply for the Hall module (4).
3. The signal acquisition and processing device suitable for multi-row pulley block steel wire rope breakage detection according to claim 1, wherein: the high-frequency alternating current constant current power supply output port of the power supply module (6) is communicated with the electromagnet (3) through a cable, and the joint of the cable and the electromagnet (3) is in a detachable quick connector mode.
4. The signal acquisition and processing device suitable for multi-row pulley block steel wire rope breakage detection according to claim 1, wherein: the Hall module (4) and the electromagnet (3) are of mutually matched wedge-shaped structures, and have positioning and guiding functions.
5. The signal acquisition and processing device suitable for multi-row pulley block steel wire rope breakage detection according to claim 1, wherein: four travelling wheels (11) and a guide wheel (12) are arranged on the bottom surfaces of the first base (10) and the second base, a wheel groove on the guide wheel (12) is assembled with a track (13), and the length of the track (13) is greater than that of a row of pulley blocks.
6. The signal acquisition and processing device suitable for multi-row pulley block steel wire rope breakage detection according to claim 1, wherein: the cross section of the electromagnet (3) is of a smaller arc structure with the arc length smaller than the semicircular arc length, the cross section of the Hall module (4) is of a larger arc structure with the arc length larger than the semicircular arc length, and the smaller arc structure and the larger arc structure are matched to form a circular ring structure.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010832259.8A CN112083058B (en) | 2020-08-18 | 2020-08-18 | Signal acquisition and processing device suitable for multi-row pulley block steel wire rope broken wire detection |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010832259.8A CN112083058B (en) | 2020-08-18 | 2020-08-18 | Signal acquisition and processing device suitable for multi-row pulley block steel wire rope broken wire detection |
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| CN202410110678.9A Division CN118032918A (en) | 2020-08-18 | Wire breakage detection method suitable for multi-row pulley block steel wire ropes |
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| CN112083058A CN112083058A (en) | 2020-12-15 |
| CN112083058B true CN112083058B (en) | 2024-03-12 |
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|---|---|---|---|---|
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