CN204575591U - A kind of steel wire rope damage detection apparatus - Google Patents
A kind of steel wire rope damage detection apparatus Download PDFInfo
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- CN204575591U CN204575591U CN201520311689.XU CN201520311689U CN204575591U CN 204575591 U CN204575591 U CN 204575591U CN 201520311689 U CN201520311689 U CN 201520311689U CN 204575591 U CN204575591 U CN 204575591U
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- wire rope
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Abstract
The utility model discloses a kind of steel wire rope damage detection apparatus, it is characterized in that, comprise: upper test section and lower test section, described upper test section and described lower test section are connected through the hinge, and are provided with steel-cable channel between described upper test section and described lower test section; Wherein, described upper test section and described lower test section symmetry; Steel wire rope damage detection apparatus of the present utility model be a kind of can the equipment of opened/closed, be divided in the middle of upper and lower two parts and leave the cavity passed through for wire rope.Two ends magnet ring is for magnetizing wire rope, and the middle armature connecting two ends permanent magnet is used for conducting magnetic circuit, and simultaneously most external shielding case does not also reduce inner high-intensity magnetic field to externalities by the interference of external magnetic field for the protection of the circuit of inside.
Description
Technical field
The utility model relates to rope damage detection technology field, especially particularly relates to a kind of steel wire rope damage detection apparatus.
Background technology
Wire rope as lifting, transport and load bearing equipment in critical piece be widely used in coal production, be the important component of the equipment such as coal master, auxiliary shaft hoisting, transport.But in its long-time use procedure, often occur the defects such as wearing and tearing, fracture of wire, corrosion, even can cause the major industrial accidents such as wire rope breaking, therefore detect in time wire rope, Timeliness coverage damages and processes and just seems most important.
The Magnetic Flux Leakage Inspecting ring of the long employing of Magnetic Flux Leakage Inspecting sensor in the past, because sampling density problem often can cause damage signal undetected, the utility model utilizes 2 detection rings to detect, and can reduce loss, improves detecting reliability.And the signal period interference that strand wire ripple causes can be overcome.
The not output current signal of damage of steel cable sensor in the past, often need to carry out signal amplification, arrangement and data sampling on the spot, this brings some problems to the deployment of detection system, the collection such as detecting data will complete at sensor proximity, is difficult to utilize high-performance acquisition server once to carry out information acquisition, process to multiple stage detecting sensor.Be inconvenient to form detection system.Not simultaneously the inconvenient interface with other system of standard signal due to what export.
Utility model content
Be head it off based on this, the utility model provides a kind of steel wire rope damage detection apparatus.
A technical scheme of the present utility model is: a kind of steel wire rope damage detection apparatus, it is characterized in that, comprise: upper test section and lower test section, described upper test section and described lower test section are connected through the hinge, and are provided with steel-cable channel between described upper test section and described lower test section; Wherein, described upper test section and described lower test section symmetry; And
Described upper test section to comprise on the first armature, first magnet ring, the first detection ring and the first screening can on magnet ring, second; The semi-enclosed structure of described first screening can, on described first armature, first, on magnet ring, second, magnet ring, the first detection ring are positioned at inside described first screening can, and described first armature is positioned at the first screening can inside surface, on described first, on magnet ring and second, magnet ring is positioned at the two ends of described first screening can axial direction, and described first detection ring is positioned in the middle part of described first screening can;
Described lower test section comprises the second armature, first time magnet ring, second time magnet ring, the second detection ring and secondary shielding shell; The semi-enclosed structure of described secondary shielding shell, described second armature, first time magnet ring, second time magnet ring, the second detection ring are positioned at inside described secondary shielding shell, and described second armature is positioned at secondary shielding inner surface of outer cover, described first time magnet ring and second time magnet ring are positioned at the two ends of described secondary shielding shell axial direction, and described second detection ring is positioned in the middle part of described secondary shielding shell.
Further, described first detection ring and the second detection ring comprise respectively: the first magnetism gathering rings, the second magnetism gathering rings and the 3rd magnetism gathering rings; Described first magnetism gathering rings, the second magnetism gathering rings and the 3rd magnetism gathering rings are along wire rope axial array;
First testing circuit plate ring, between described first magnetism gathering rings and the second magnetism gathering rings;
Second testing circuit plate ring, between described second magnetism gathering rings and the 3rd magnetism gathering rings.
Further, the first dead ring is provided with between described first testing circuit ring and described first magnetism gathering rings; The second dead ring is provided with between described second testing circuit ring and described 3rd magnetism gathering rings.
Further, described first testing circuit ring and the second testing circuit ring two ends are respectively equipped with a Hall element.
Further, Hall testing circuit, signal amplification circuit and voltage-current converter circuit is comprised respectively in first testing circuit ring and the second testing circuit ring, wherein, described Hall testing circuit connection signal amplifying circuit, described signal amplification circuit connects voltage-current converter circuit.
Further, described Hall testing circuit comprises the first Hall element, the second Hall element, resistance R1, resistance R2, resistance R3, resistance R4 and constant current source I
hwherein, described first Hall element and the series connection of the second Hall element, constant current source is connected to the first Hall element and the second Hall element two ends, described resistance R1 and resistance R2 is connected to the first Hall element, described resistance R3 and resistance R4 is connected to the second Hall element, and described resistance R1 resistance R2 in parallel with resistance R3 and described is in parallel with resistance R4, output signal U
0.
Further, described signal amplification circuit also comprises zero adjustment circuit and difference single-stage amplifying circuit, and described zero adjustment circuit is connected to the input end of described difference single-stage amplifying circuit, described output signal U
0be connected to the input end of described difference single-stage amplifying circuit.
Further, described voltage-current converter circuit carries out Voltage to current transducer by voltage/current conversion interface circuit AM422, and described difference single-stage amplifying circuit output signal is connected to AM422 input end.
Further, described upper test section and described lower test section are symmetrical semicylinder, and described upper test section and described lower test section phase-contact surface are provided with nylon sheath wire and lower nylon sheath wire separately.
Further, described first magnetism gathering rings, the second magnetism gathering rings and the 3rd magnetism gathering rings are semicircle.
The utility model beneficial effect:
Adopt such scheme, steel wire rope damage detection apparatus of the present utility model be a kind of can the equipment of opened/closed, be divided in the middle of upper and lower two parts and leave the cavity passed through for wire rope.Two ends magnet ring is for magnetizing wire rope, and the middle armature connecting two ends permanent magnet is used for conducting magnetic circuit, and simultaneously most external shielding case does not also reduce inner high-intensity magnetic field to externalities by the interference of external magnetic field for the protection of the circuit of inside.Respectively have a detection head or detection ring in two parts up and down of pick-up unit, they are identical half cylindrical structure.What pick-up unit adopted is leakage flux lossless detection method, first wire rope is detected part saturated magnetization, then sensor 8 Hall elements detect wire rope surface leakage flux, can judge the degree of impairment of wire rope according to the leakage flux change on wire rope surface.Pick-up unit need coordinate pulse encoder to use, drive pulse encoder to rotate when wire rope advances, the wire rope segment distance that often advances produces a sampling pulse, in order to ensure damage signal degree of accuracy, the utility model provides the equidistant sampling being accurate to 0.5mm, both in the length of the every 0.5mm of wire rope, gathers a damage signal.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of a kind of steel wire rope damage detection apparatus of the utility model;
Fig. 2 is a kind of steel wire rope damage detection apparatus of the utility model wherein detection ring schematic diagram;
Fig. 3 is that in a kind of steel wire rope damage detection apparatus of the utility model, in detection ring, Hall element arranges schematic diagram;
Fig. 4 is the series circuit schematic diagram of Hall element in a kind of steel wire rope damage detection apparatus of the utility model;
Fig. 5 is signal amplification circuit schematic diagram in a kind of steel wire rope damage detection apparatus of the utility model;
Fig. 6 is voltage-current converter circuit schematic diagram in a kind of steel wire rope damage detection apparatus of the utility model.
Embodiment
For the ease of understanding the utility model, below with reference to relevant drawings, the utility model is described more fully.Better embodiment of the present utility model is given in accompanying drawing.But the utility model can be realized by many different forms, embodiment described below being not limited to.On the contrary, provide the object of these embodiments be make to disclosure of the present utility model understand more thorough comprehensively.
It should be noted that, when element is called as " being arranged at " another element, directly can there is element placed in the middle in it on another element or also.When an element is considered to " connection " another element, it can be directly connected to another element or may there is centering elements simultaneously.Term as used herein " vertical ", " level ", "left", "right", " on ", D score and similar statement just for illustrative purposes, do not represent it is unique embodiment.
Unless otherwise defined, all technology used herein and scientific terminology are identical with belonging to the implication that those skilled in the art of the present utility model understand usually.The object of the term used in instructions of the present utility model herein just in order to describe concrete embodiment, is not intended to be restriction the utility model.Term as used herein "and/or" comprises arbitrary and all combinations of one or more relevant Listed Items.
As shown in Figure 1, a kind of steel wire rope damage detection apparatus, comprise: upper test section 1 and lower test section 2, wherein, described upper test section 1 and lower test section 2 are semicylinder, and symmetrically, described upper test section 1 is connected through the hinge with described lower test section 2, and being provided with wire rope 6 passage between described upper test section 1 and described lower test section 2, wire rope 6 passage can be arranged to corresponding shape according to difformity; Wherein, described upper test section 1 is symmetrical with described lower test section 2; Here symmetry refers to that the detection part in test section 1 and lower test section 2 is symmetrical, so just can better detect wire rope; Moreover, in order to prevent the damage of wire rope 6 pairs of pick-up units, described upper test section 1 and described lower test section 2 phase-contact surface are provided with nylon sheath wire 16 and lower nylon sheath wire 26 separately.
Continue with reference to shown in Fig. 1, wherein, described upper test section 1 to comprise on the first armature 11, first magnet ring 13, first detection ring 14 and the first screening can 15 on magnet ring 12, second; The semi-enclosed structure of described first screening can 15, on described first armature 11, first, on magnet ring 12, second, magnet ring 13, first detection ring 14 is positioned at inside described first screening can 15, and described first armature 11 is positioned at the first screening can 15 inside surface, on described first, on magnet ring 12 and second, magnet ring 13 is positioned at the two ends of described first screening can 15 axial direction, and described first detection ring 14 is positioned in the middle part of described first screening can 15; Two ends magnet ring is for magnetizing wire rope, and the middle armature connecting two ends permanent magnet is used for conducting magnetic circuit, and simultaneously most external shielding case does not also reduce inner high-intensity magnetic field to externalities by the interference of external magnetic field for the protection of the circuit of inside.Respectively have a detection head or detection ring in two parts up and down of pick-up unit, they are identical half cylindrical structure.
Continue with reference to shown in Fig. 1, wherein, described lower test section 2 comprises the second armature 21, first time magnet ring 22, second time magnet ring 23, second detection ring 24 and secondary shielding shell 25; The semi-enclosed structure of described secondary shielding shell 25, described second armature 21, first time magnet ring 22, second time magnet ring 23, second detection ring 24 is positioned at inside described secondary shielding shell 25, and described second armature 21 is positioned at secondary shielding shell 25 inside surface, described first time magnet ring 22 and second time magnet ring 23 are positioned at the two ends of described secondary shielding shell 25 axial direction, and described second detection ring 24 is positioned in the middle part of described secondary shielding shell 25; Two ends magnet ring is for magnetizing wire rope, and the middle armature connecting two ends permanent magnet is used for conducting magnetic circuit, and simultaneously most external shielding case does not also reduce inner high-intensity magnetic field to externalities by the interference of external magnetic field for the protection of the circuit of inside.Respectively have a detection head or detection ring in two parts up and down of pick-up unit, they are identical half cylindrical structure.
First detection ring as described above and the second detection ring also can be called the first detection head and the second detection head, and these two kinds of calls are as broad as long, are only differences nominally.
As shown in Figure 2, described first detection ring 14 and the second detection ring 24 comprise respectively: the first magnetism gathering rings 41, second magnetism gathering rings 42 and the 3rd magnetism gathering rings 45; Described first magnetism gathering rings 41, second magnetism gathering rings 45 and the 3rd magnetism gathering rings 42 are along wire rope 6 axial array; First testing circuit plate ring 44, between described first magnetism gathering rings 41 and the second magnetism gathering rings 45; Second testing circuit plate ring 43, between described second magnetism gathering rings 45 and the 3rd magnetism gathering rings 42.What pick-up unit adopted is leakage flux lossless detection method, first wire rope is detected part saturated magnetization, then pick-up unit 8 Hall elements detect wire rope surface leakage flux, can judge the degree of impairment of wire rope according to the leakage flux change on wire rope surface.
As shown in Figure 2, the first dead ring 46 is provided with between described first testing circuit ring 44 and described first magnetism gathering rings 41; The second dead ring 47 is provided with between described second testing circuit ring 43 and described 3rd magnetism gathering rings 41.First such employing dead ring is the distance between magnetism gathering rings and testing circuit ring, and makes to insulate between magnetism gathering rings and testing circuit ring.
As shown in Figure 3, described first testing circuit ring 44 and the second testing circuit ring 43 two ends are respectively equipped with a Hall element.Because the first testing circuit ring 44 and the second testing circuit ring 43 are all ring-types, and cross section is all semicircle, make so each first testing circuit ring and the second testing circuit ring two ends Hall element connect the center of circle time angle be right angle, shown in figure 3, the first half is the first testing circuit ring 44, the latter half and the first testing circuit ring 44 symmetry, two Hall elements are established in each testing circuit ring, the first Hall element 31 and the second Hall element 32 is provided with in first testing circuit ring 44, the 3rd Hall element 33 and the 4th Hall element 34 is provided with the testing circuit ring of the first testing circuit ring 44 symmetry.Be provided with altogether 4 testing circuit rings in such pick-up unit or be testing circuit head, each testing circuit ring or cry in testing circuit head and be provided with two Hall elements, so, then pick-up unit 8 Hall elements detect wire rope surface leakage flux, can judge the degree of impairment of wire rope according to the leakage flux change on wire rope surface.
Further, also Hall testing circuit, signal amplification circuit and voltage-current converter circuit is comprised respectively in described first testing circuit ring 44 and the second testing circuit ring 43, wherein, described Hall testing circuit connection signal amplifying circuit, described signal amplification circuit connects voltage-current converter circuit.
As shown in Figure 4, described Hall testing circuit comprises the first Hall element, the second Hall element, resistance R1, resistance R2, resistance R3, resistance R4 and constant current source I
hwherein, described first Hall element and the series connection of the second Hall element, constant current source is connected to the first Hall element and the second Hall element two ends, described resistance R1 and resistance R2 is connected to the first Hall element, described resistance R3 and resistance R4 is connected to the second Hall element, and described resistance R1 resistance R2 in parallel with resistance R3 and described is in parallel with resistance R4, output signal U
0.With reference to shown in Fig. 4, the utility model adopts the series system of Hall element in testing circuit, and wherein R1, R2, R3, R4 are the resistance of 1.74K.When adopting series system, not only can solve sensing device restriction spatially, constant current source I can also be reduced
hexpense.
As shown in Figure 5, described signal amplification circuit also comprises zero adjustment circuit and difference single-stage amplifying circuit, and described zero adjustment circuit is connected to the input end of described difference single-stage amplifying circuit, described output signal U
0be connected to the input end of described difference single-stage amplifying circuit.With reference to shown in Fig. 5, the magnetic leakage signal that Hall element senses is fainter, needs to amplify signal.The utility model adopts difference single-stage amplifying circuit, and the output terminals A+of Hall element and A-access from A+ and A-of amp.in, R7 and R8 is on all four 39K, and enlargement factor is R7/R1=22.4.In addition, the utility model reaches ideal effect to make amplifier export, also be provided with zero adjustment circuit at input amplifier, the utility model employs the output of variable resistor to amplifier and regulates, by regulating the scope that the output of amplifier can be made to reach desirable.
As shown in Figure 6, described voltage-current converter circuit carries out Voltage to current transducer by voltage/current conversion interface circuit AM422, and described difference single-stage amplifying circuit output signal is connected to AM422 input end.With reference to Figure 6 shows that voltage-current converter circuit figure.For overcoming line-hit, extend signal transmission distance, usually adopt voltage/current transducer, voltage signal is converted to current signal (1 ~ 5mA), the utility model selects voltage/current conversion interface circuit AM422.AM422 be the voltage for simulating signal conversion process to the special purpose interface integrated circuit of electric current, the output that this circuit can be used as input voltage range variable be the standard interface circuit of electric current.Be applicable to the input signal of the various different range of process, be especially suitable as the electric current that output signal is the sensor of one end ground connection and export translation interface.The utility model requires output current scope IOUT=1 ~ 5mA, input voltage range VIN=0 ~ 5V, VREF=5V, and the numerical value of the outward element calculated is: R0=25; R3=R4=33k; RSET ≈ 2,64k; R5=40; R1/R2 ≈ 5.25; RL=0 ~ 500; C1=2.2 μ F.
Steel wire rope damage detection apparatus of the present utility model be a kind of can the equipment of opened/closed, be divided in the middle of upper and lower two parts and leave the cavity passed through for wire rope.Two ends magnet ring is for magnetizing wire rope, and the middle armature connecting two ends permanent magnet is used for conducting magnetic circuit, and simultaneously most external shielding case does not also reduce inner high-intensity magnetic field to externalities by the interference of external magnetic field for the protection of the circuit of inside.Respectively have a detection head or detection ring in two parts up and down of pick-up unit, they are identical half cylindrical structure.What pick-up unit adopted is leakage flux lossless detection method, first wire rope is detected part saturated magnetization, then sensor 8 Hall elements detect wire rope surface leakage flux, can judge the degree of impairment of wire rope according to the leakage flux change on wire rope surface.Pick-up unit need coordinate pulse encoder to use, drive pulse encoder to rotate when wire rope advances, the wire rope segment distance that often advances produces a sampling pulse, in order to ensure damage signal degree of accuracy, the utility model provides the equidistant sampling being accurate to 0.5mm, both in the length of the every 0.5mm of wire rope, gathers a damage signal.
For enabling above-mentioned purpose of the present utility model, feature and advantage become apparent more, are described in detail by reference to the accompanying drawings above to embodiment of the present utility model.A lot of detail has been set forth so that fully understand the utility model in superincumbent description.But the utility model can be much different from above-described alternate manner to implement, those skilled in the art can when doing similar improvement without prejudice to when the utility model intension, and therefore the utility model is by the restriction of disclosed specific embodiment above.And, each technical characteristic of the above embodiment can combine arbitrarily, for making description succinct, the all possible combination of each technical characteristic in above-described embodiment is not all described, but, as long as the combination of these technical characteristics does not exist contradiction, be all considered to be the scope that this instructions is recorded.
The above embodiment only have expressed several embodiment of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.
Claims (10)
1. a steel wire rope damage detection apparatus, is characterized in that, comprising: upper test section and lower test section, and described upper test section and described lower test section are connected through the hinge, and are provided with steel-cable channel between described upper test section and described lower test section; Wherein, described upper test section and described lower test section symmetry; And
Described upper test section to comprise on the first armature, first magnet ring, the first detection ring and the first screening can on magnet ring, second; The semi-enclosed structure of described first screening can, on described first armature, first, on magnet ring, second, magnet ring, the first detection ring are positioned at inside described first screening can, on described first, on magnet ring and second, magnet ring is positioned at the two ends of described first screening can axial direction, and described first detection ring is positioned in the middle part of described first screening can;
Described lower test section comprises the second armature, first time magnet ring, second time magnet ring, the second detection ring and secondary shielding shell; The semi-enclosed structure of described secondary shielding shell, described second armature, first time magnet ring, second time magnet ring, the second detection ring are positioned at inside described secondary shielding shell, and described second armature is positioned at secondary shielding inner surface of outer cover, described first time magnet ring and second time magnet ring are positioned at the two ends of described secondary shielding shell axial direction, and described second detection ring is positioned in the middle part of described secondary shielding shell.
2. a kind of steel wire rope damage detection apparatus according to claim 1, is characterized in that, described first detection ring and the second detection ring comprise respectively: the first magnetism gathering rings, the second magnetism gathering rings and the 3rd magnetism gathering rings; Described first magnetism gathering rings, the second magnetism gathering rings and the 3rd magnetism gathering rings are along wire rope axial array;
First testing circuit plate ring, between described first magnetism gathering rings and the second magnetism gathering rings;
Second testing circuit plate ring, between described second magnetism gathering rings and the 3rd magnetism gathering rings.
3. a kind of steel wire rope damage detection apparatus according to claim 2, is characterized in that, is provided with the first dead ring between described first testing circuit ring and described first magnetism gathering rings; The second dead ring is provided with between described second testing circuit ring and described 3rd magnetism gathering rings.
4. a kind of steel wire rope damage detection apparatus according to Claims 2 or 3, is characterized in that, described first testing circuit ring and the second testing circuit ring two ends are respectively equipped with a Hall element.
5. a kind of steel wire rope damage detection apparatus according to claim 2, it is characterized in that, Hall testing circuit, signal amplification circuit and voltage-current converter circuit is comprised respectively in first testing circuit ring and the second testing circuit ring, wherein, described Hall testing circuit connection signal amplifying circuit, described signal amplification circuit connects voltage-current converter circuit.
6. a kind of steel wire rope damage detection apparatus according to claim 5, is characterized in that, described Hall testing circuit comprises the first Hall element, the second Hall element, resistance R1, resistance R2, resistance R3, resistance R4 and constant current source I
hwherein, described first Hall element and the series connection of the second Hall element, constant current source is connected to the first Hall element and the second Hall element two ends, described resistance R1 and resistance R2 is connected to the first Hall element, described resistance R3 and resistance R4 is connected to the second Hall element, and described resistance R1 resistance R2 in parallel with resistance R3 and described is in parallel with resistance R4, output signal U
0.
7. a kind of steel wire rope damage detection apparatus according to claim 6, it is characterized in that, described signal amplification circuit also comprises zero adjustment circuit and difference single-stage amplifying circuit, and described zero adjustment circuit is connected to the input end of described difference single-stage amplifying circuit, described output signal U
0be connected to the input end of described difference single-stage amplifying circuit.
8. a kind of steel wire rope damage detection apparatus according to claim 7, it is characterized in that, described voltage-current converter circuit carries out Voltage to current transducer by voltage/current conversion interface circuit AM422, and described difference single-stage amplifying circuit output signal is connected to AM422 input end.
9. a kind of steel wire rope damage detection apparatus according to claim 1, it is characterized in that, described upper test section and described lower test section are symmetrical semicylinder, and described upper test section and described lower test section phase-contact surface are provided with nylon sheath wire and lower nylon sheath wire separately.
10. a kind of steel wire rope damage detection apparatus according to claim 2, is characterized in that, described first magnetism gathering rings, the second magnetism gathering rings and the 3rd magnetism gathering rings are semicircle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520311689.XU CN204575591U (en) | 2015-05-15 | 2015-05-15 | A kind of steel wire rope damage detection apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520311689.XU CN204575591U (en) | 2015-05-15 | 2015-05-15 | A kind of steel wire rope damage detection apparatus |
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| Publication Number | Publication Date |
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| CN204575591U true CN204575591U (en) | 2015-08-19 |
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|---|---|---|---|
| CN201520311689.XU Withdrawn - After Issue CN204575591U (en) | 2015-05-15 | 2015-05-15 | A kind of steel wire rope damage detection apparatus |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104807879A (en) * | 2015-05-15 | 2015-07-29 | 徐州博联科技有限公司 | Detection device for damage of steel wire rope |
| CN110062884A (en) * | 2016-12-13 | 2019-07-26 | 东京制纲株式会社 | The signal processing apparatus and damage detection apparatus of the damage detecting method of wirerope and the damage check for wirerope |
-
2015
- 2015-05-15 CN CN201520311689.XU patent/CN204575591U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104807879A (en) * | 2015-05-15 | 2015-07-29 | 徐州博联科技有限公司 | Detection device for damage of steel wire rope |
| CN104807879B (en) * | 2015-05-15 | 2017-12-05 | 徐州博联科技有限公司 | A kind of steel wire rope damage detection apparatus |
| CN110062884A (en) * | 2016-12-13 | 2019-07-26 | 东京制纲株式会社 | The signal processing apparatus and damage detection apparatus of the damage detecting method of wirerope and the damage check for wirerope |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150819 Effective date of abandoning: 20171205 |