CN113984884B - Magnetic induction flaw detection device suitable for steel wire rope groups with different pitches - Google Patents
Magnetic induction flaw detection device suitable for steel wire rope groups with different pitches Download PDFInfo
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- 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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Abstract
The invention belongs to the technical field of magnetic induction flaw detection of technical steel wire ropes, and particularly relates to a magnetic induction flaw detection device suitable for steel wire rope groups with different intervals, wherein the steel wire rope groups comprise a plurality of steel wire ropes which are arranged side by side, and the steel wire rope groups comprise flaw detection brackets, interval adjusting mechanisms and magnetic induction flaw detection units; the magnetic induction flaw detection device is suitable for steel wire rope groups with different intervals, synchronous adjustment of the intervals of a plurality of magnetic induction flaw detection units can be realized through a scissor type telescopic structure, and meanwhile, the magnetic induction flaw detection units can be positioned by matching with locking nuts, so that the magnetic induction flaw detection device in the scheme can be matched and adjusted according to the steel wire ropes with different intervals, and the use requirement is met; the unique T-shaped magnetic sensor array is used for detecting the leakage magnetic flux at the defect position of the surface of the steel wire and the change of the main magnetic flux of the magnetic circuit caused by the defect, so that the detection speed and the accuracy can be improved.
Description
Technical Field
The invention belongs to the technical field of magnetic induction flaw detection of technical steel wire ropes, and particularly relates to a magnetic induction flaw detection device suitable for steel wire rope groups with different pitches.
Background
The vertical elevator usually adopts a steel wire rope group formed by a plurality of parallel steel wire ropes to carry out lifting control, and the steel wire rope group is easy to have defects of wire breakage, abrasion and the like in the long-term operation process of the vertical elevator, so that potential safety hazards are caused. At present, the magnetic leakage method is a mature nondestructive detection and flaw detection method for the defects of the steel wire ropes, and various magnetic leakage sensors capable of assembling the steel wire ropes of the elevators have been developed at present.
Some applications of detecting defects of steel wire ropes through magnetic leakage are disclosed in patent application numbers CN201710408465.4, CN202010070888.1 and CN 20201168420. X.
However, in actual use, because the rope intervals of the elevator steel wire rope groups adopted by different elevator manufacturers are different, the application range of a single array type magnetic leakage sensor is limited, and in addition, the peripheral surface of the steel wire rope cannot be comprehensively covered in the existing detection device, so that the steel wire rope of the elevator can complete all flaw detection only by detecting for many times, and the problem that the steel wire rope groups cannot be rapidly detected once by the sequential magnetic leakage sensors is solved.
Disclosure of Invention
In order to solve the problems in the prior art, the scheme provides the magnetic induction flaw detection device suitable for the steel wire rope groups with different pitches.
The technical scheme adopted by the invention is as follows:
The magnetic induction flaw detection device suitable for the steel wire rope groups with different intervals comprises a plurality of steel wire ropes which are arranged side by side, and comprises a flaw detection bracket, an interval adjusting mechanism and a magnetic induction flaw detection unit;
Two flaw detection brackets are arranged on the machine frame, and instrument locks matched with each other are respectively arranged on the two transverse sides of the two flaw detection brackets;
The interval adjusting mechanism is arranged on the flaw detection bracket and comprises an adjusting screw and a scissor type telescopic structure; the arrangement direction of the adjusting screw is the same as that of the scissor type telescopic structure, and the telescoping action of the scissor type telescopic structure can be controlled;
The magnetic induction flaw detection units are arranged on the scissor type telescopic structure in parallel and correspond to the steel wire ropes one by one;
the magnetic induction flaw detection unit comprises a magnetization component and a T-shaped magnetic sensitive element array; the magnetizing component can contact the two ends of a section of steel wire rope and magnetize the section of steel wire rope locally; the T-shaped magnetic sensor array can detect the magnetic flux change of the section of steel wire rope.
As a supplement or alternative structural design to the above-described solution: the scissors telescopic structure comprises a plurality of middle crossing groups and a plurality of end crossing groups; the middle cross group comprises two long linkage rods which are rotatably connected in a cross way; the end parts of two adjacent middle crossed group long linkage rods are connected with each other in a rotating way; the end part cross group comprises two short linkage rods, the two short linkage rods are connected with each other in a rotating way, and the end part cross group is connected with the end part of the middle part cross group long linkage rod in a rotating way.
As a supplement or alternative structural design to the above-described solution: the magnetic induction flaw detection unit further comprises a sensor support, a part of the sensor support is connected to the cross connection part of the middle cross group, and a part of the sensor support is connected to the end cross group; the adjusting screw is rotationally connected with the sensor support at one end of the scissor type telescopic structure, and is in threaded transmission connection with the sensor support at the other end of the scissor type telescopic structure.
As a supplement or alternative structural design to the above-described solution: the upper part and the lower part of the adjusting screw are respectively provided with a round guide rod, the round guide rods are relatively fixed with the flaw detection support, each magnetic induction flaw detection unit is provided with a locking nut, and the locking nuts can vertically abut against the round guide rods to limit the magnetic induction flaw detection units.
As a supplement or alternative structural design to the above-described solution: the flaw detection support is relatively fixed with an encoder, the encoder is connected with a guide wheel, and the guide wheel can be tightly attached to the steel wire rope to rotate under the action of friction force.
As a supplement or alternative structural design to the above-described solution: the magnetizing assembly comprises a yoke, an arc pole shoe and a permanent magnet; the yoke is rectangular and is parallel to wire rope's length direction, is provided with a permanent magnet respectively in yoke's both ends department, and every permanent magnet department corresponds and is provided with an arc pole shoe, and arc pole shoe has curved notch in order to laminate wire rope's outer wall.
As a supplement or alternative structural design to the above-described solution: the T-shaped magnetic sensor array comprises a main magnetic flux sensor array and a leakage magnetic flux sensor array, wherein one main magnetic flux sensor array and two leakage magnetic flux sensor arrays are distributed in a T shape.
As a supplement or alternative structural design to the above-described solution: the area between the two arc pole shoes and the joint position of the steel wire rope forms a coverage area; the main magnetic flux magnetic sensor array is arranged in the coverage area and is used for detecting the main magnetic flux change of the steel wire rope; the leakage magnetic flux sensing element is arranged outside the coverage area and is used for detecting the leakage magnetic flux change of the steel wire rope.
As a supplement or alternative structural design to the above-described solution: the magnetizing assembly and the T-shaped magnetic sensor array are both fixed on the sensor framework, an arc-shaped groove which can be attached to the steel wire rope is formed in the sensor framework, and a magnetic sensor lock catch is arranged on the sensor framework on the back side of the arc-shaped groove and can fix the T-shaped magnetic sensor array.
As a supplement or alternative structural design to the above-described solution: wire rope limiting parts are arranged on two vertical sides of the flaw detection support, and the wire rope limiting parts of the two flaw detection supports are matched with and abutted against the wire rope so as to reduce shaking of the wire rope.
The beneficial effects of the invention are as follows:
1. According to the magnetic induction flaw detection device suitable for the steel wire rope groups with different intervals, the two symmetrically arranged flaw detection brackets are symmetrically matched and clamp the steel wire rope groups, and the magnetic induction flaw detection units arranged on the two flaw detection brackets can cover half peripheral surfaces of the steel wire rope respectively, so that the whole peripheral surfaces of the steel wire rope can be covered and detected, the detection efficiency is improved, and the repeated labor of workers is reduced;
2. In addition, through the scissors telescopic structure in the scheme, synchronous adjustment of the intervals of a plurality of magnetic induction flaw detection units can be realized, and meanwhile, the magnetic induction flaw detection units can be positioned by being matched with the locking nuts, so that the magnetic induction flaw detection device in the scheme can be matched and adjusted according to steel wire ropes with different intervals, and the use requirement is met;
3. In the scheme, the unique T-shaped magnetic sensor array is utilized to detect the leakage magnetic flux at the defect position of the surface of the steel wire and the change of the main magnetic flux of the magnetic circuit caused by the defect, so that the detection speed and the accuracy can be improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.
FIG. 1 is a general structural diagram of a magnetic induction flaw detection device in the present embodiment;
FIG. 2 is a schematic diagram of a spacing adjustment assembly;
FIG. 3 is an exploded view of the magnetic induction flaw detection unit, encoder and spacing adjustment assembly;
FIG. 4 is a schematic structural view of a magnetic induction flaw detection unit;
fig. 5 is an exemplary graph of a leakage detection signal for a typical defect of a wire rope.
In the figure: 1-a steel wire rope group; 2-a steel wire rope limiting piece; 3-a magnetic induction flaw detection unit; 4-instrument locking; 5-a distance adjusting knob; a 6-encoder; 7-a guide wheel; 8-a sensor holder; 9-a circular guide rod; 10-adjusting a screw; 11-locking nut; 12-long linkage rod; 13-short linkage rod; 14-a sensor holder; 15-instrument housing; 16-a lock nut runner; 17-Lei Mo joint; 18-a protective shell of the PCB; 19-yoke; 20-locking a magnetic sensor; 21-permanent magnets; 22-arc pole pieces; 23-a flexible PCB; 24-wiring holes; 25-sensor holder fixing holes; 26-wiring grooves; 27-a sensor skeleton; 28-an array of leakage flux sensors; 29-an array of primary flux-sensing elements; 30-flaw detector; 31-flaw detection support; 32-scissor type telescoping structure.
Detailed Description
The technical solutions of the present embodiment will be clearly and completely described below with reference to the accompanying drawings, and the described embodiments are only some embodiments, but not all embodiments, and all other embodiments obtained by those skilled in the art without making any creative effort based on the embodiments of the present embodiment are all within the protection scope of the present solution.
Example 1
As shown in fig. 1 to 4, the present embodiment designs a magnetic induction flaw detection device suitable for wire rope groups with different pitches, the wire rope group 1 includes a plurality of wire ropes arranged side by side, and includes two flaw detection brackets 31, one flaw detector 30 is disposed on each flaw detection bracket 31, and a distance measuring instrument is disposed on one flaw detection bracket 31.
The flaw detection bracket 31 comprises an arch connecting piece, a vertical arm plate and a steel wire rope limiting piece 2; the two vertical wall plates are arranged side by side, a steel wire rope limiting part 2 is respectively connected between the upper ends and the lower ends of the two vertical wall plates, the steel wire rope limiting part 2 is cylindrical and can be made of rubber materials, and the steel wire rope limiting part 2 can be used for reducing shaking of a steel wire rope. An arched connection is connected between the middle portions of the two vertical armplates, which arched connection can be used for the gripping of the hand.
Instrument locks 4 can be arranged on two lateral sides of the flaw detection support 31, and the instrument locks 4 can tightly hold the two flaw detection supports 31 on two sides of the steel wire rope group 1, so that flaw detection operation of the flaw detector 30 on two sides of the steel wire rope group 1 is facilitated.
The instrument shell 15 on the flaw detector 30 is provided with a distance measuring instrument, the distance measuring instrument comprises an encoder 6 and a guide wheel 7, the encoder 6 is relatively fixed with the instrument shell 15, the guide wheel 7 is connected to the encoder 6, the encoder 6 is relatively fixed on the flaw detection support 31, in the flaw detection process, the guide wheel 7 is tightly attached to one of the steel wire ropes, the guide wheel 7 rotates under friction force, and then the encoder 6 is driven, so that the steel wire rope ranging is realized, and a worker can acquire the damaged position and length of the steel wire rope according to the ranging result.
The flaw detector 30 comprises a PCB protective shell 18, an instrument shell 15, a spacing adjusting mechanism, a magnetic induction flaw detection unit 3 and other components.
The PCB protective housing 18 is connected to the instrument housing 15, and a signal acquisition adapter plate is arranged in the PCB protective housing 18, and can be electrically connected with the encoder 6 and each magnetic flaw detection unit 3, so that a distance measurement result and a flaw detection result are obtained, and then the distance measurement result and the flaw detection result are transmitted to an acquisition board card through a Lei Mo connector 17 arranged on the PCB protective housing 18, so that data uploading is realized.
The distance adjusting mechanism is fixed in the instrument shell 15 and comprises an adjusting screw rod 10 and a scissor type telescopic structure 32; the arrangement direction of the adjusting screw 10 and the arrangement direction of the scissor type telescopic structure 32 are the same, the adjusting screw 10 is rotationally connected with the instrument shell 15, one end of the adjusting screw 10 penetrates through the instrument shell 15 and the flaw detection bracket 31 and is connected with the distance adjusting knob 5, or the adjusting screw 10 is rotationally connected with the sensor bracket 14 at one end of the scissor type telescopic structure 32; the other end of the two adjusting screws 10 is in threaded transmission connection with the sensor bracket 14 at the other end of the scissor type telescopic structure 32. The telescopic action of the scissor type telescopic structure 32 can be controlled through the distance adjusting knob 5; thereby controlling the spacing between the magnetically induced flaw detection units 3.
The scissors assembly 32 includes a plurality of middle cross sets and a plurality of end cross sets; the middle cross group comprises two long linkage rods 12, and the two long linkage rods 12 are rotatably connected in a cross mode; the end parts of two adjacent middle crossed group long linkage rods 12 are connected with each other in a rotating way; the end cross group includes two short link rods 13, the two short link rods 13 are rotatably connected to each other, and the end cross group is rotatably connected to the end of the middle cross group long link rod 12.
The shear type telescopic structure 32 is provided with a plurality of magnetic induction flaw detection units 3, a part of sensor brackets 14 are connected at the cross connection part of the middle cross group, and a part of sensor brackets 14 are connected at the end cross group. The magnetic induction flaw detection units 3 are arranged in parallel and correspond to the steel wire ropes one by one. Through this scissors telescopic structure 32, can realize the equidistant regulation of magnetic induction detecting a flaw unit 3 to be applicable to the defect detection of different model elevator wire rope group 1.
Circular guide rods 9 are respectively arranged above and below the adjusting screw rods 10, the circular guide rods 9 are relatively fixed with the flaw detection support 31, lock nuts 11 are arranged on each magnetic induction flaw detection unit 3, and the lock nuts 11 can vertically abut against the circular guide rods 9 to limit the magnetic induction flaw detection units 3. When the scissors telescoping mechanism completes equidistant adjustment and realizes pairing of the magnetic flaw detection unit 3 and the tested steel wire rope, after the position of the magnetic flaw detection unit 3 is determined, the locking nut 11 can be fastened, and the relative position of the two is fixed.
The magnetic induction flaw detection unit 3 comprises a magnetization component, a T-shaped magnetic sensitive element array, a sensor bracket 14, a sensor framework 27 and the like. Wherein, magnetization subassembly and T type magnetosensitive element array all are fixed in sensor skeleton 27, are provided with the arc wall that can laminate wire rope in sensor skeleton 27 towards wire rope's one side, are provided with wiring groove 26 in sensor skeleton 27 one side that is away from the arc wall, can install flexible PCB board 23 in this wiring groove 26, can electrically connect leakage magnetic flux magnetosensitive element array 28 and main magnetic flux magnetosensitive element array 29 on flexible PCB board 23 to carry out the magnetic flux and detect. The sensor skeleton 27 may be provided with a magnetic sensor lock 20, and the T-shaped magnetic sensor array, in particular, the position of the leakage magnetic flux magnetic sensor array 28 may be fixed to the sensor skeleton 27 by using the magnetic sensor lock 20. Fixing holes may be provided at end surfaces of both ends of the sensor bracket 14, and the sensor bracket 14 and the sensor skeleton 27 can be fixedly connected together. The sensor skeleton 27 is manufactured by adopting a 3D printing technology, and is matched with a U-shaped excitation magnetic circuit formed by the yoke 19, the permanent magnet 21 and the arc-shaped pole shoe 22 to realize the local magnetization of the steel wire rope; the leakage flux sensing element array 28 and the main flux sensing element array 29 integrated on the basis of the flexible PCB 23 form a T-shaped detection array, wherein the leakage flux sensing element array 28 detects leakage flux signals of defects, and the main flux sensing element array 29 detects main flux signals of defects, so that detection of two defect signals by a single sensor is realized.
The sensor holder 14 is used for fixing the sensor skeleton 27, and the sensor holder 14 is also fixedly connected with the scissor telescopic structure 32. A wiring hole 24 is arranged at one end of the sensor skeleton 27, and a cable connected with the flexible PCB 23 is electrically connected with the signal acquisition adapter plate through the wiring hole 24.
The magnetizing assembly comprises a yoke 19, an arc pole shoe 22, a permanent magnet 21 and other parts; the yoke 19 is in a strip shape and is arranged along the length direction parallel to the steel wire rope, two permanent magnets 21 are respectively arranged at two ends of the yoke 19, an arc-shaped pole shoe 22 is correspondingly arranged at each permanent magnet 21, and the arc-shaped pole shoe 22 is provided with an arc-shaped notch to be attached to the outer wall of the steel wire rope. When the magnetic field sensor is used, the two arc pole shoes 22 are attached to the steel wire rope, so that the steel wire rope between the two arc pole shoes is magnetized, and due to the fact that the two permanent magnets 21 are adopted, double-loop permanent magnet magnetic circuit excitation can be formed between magnetizing assemblies, then the magnetic flux change can be detected through the T-shaped magnetic sensor array, and the breakage or damage of the steel wire rope can be judged.
The T-shaped magnetic sensor array comprises a main magnetic flux sensor array 29 and a leakage magnetic flux sensor array 28, wherein one main magnetic flux sensor array 29 and two leakage magnetic flux sensor arrays 28 are distributed in a T shape. The area between the two arc pole shoes 22 and the wire rope attaching position forms a coverage area; the main magnetic flux magnetic sensor array 29 is arranged in the coverage area and is used for detecting the main magnetic flux change of the steel wire rope; the leakage magnetic flux sensing element is arranged outside the coverage area and is used for detecting the leakage magnetic flux change of the steel wire rope.
The structure in this embodiment is suitable for different interval elevator wire rope group 1, can realize the equidistant regulation of dual-functional magnetic leakage sensing unit to be applicable to the defect detection of different model elevator wire rope group 1.
When the structure in this embodiment is typical of a defect on the surface of a wire rope, a periodically occurring strand wave signal will be present in the detected signal due to the special winding structure of the wire rope. When the surface defect part is used, the T-shaped magnetic sensor array can obtain the leakage magnetic flux detection result and the main magnetic flux detection result of the same defect, and the two signals are mutually checked, so that the defect of the traditional leakage magnetic detection sensor can be overcome, the defect detection capability of the sensor is improved, and fig. 5 is an exemplary diagram of one detection result.
Example 2
As shown in fig. 2 to 4, the present embodiment designs a magnetic induction flaw detection unit 3 for wire rope flaw detection.
The magnetic induction flaw detection unit 3 comprises a magnetization component, a T-shaped magnetic sensitive element array, a sensor bracket 14, a sensor framework 27 and the like. Wherein, magnetization subassembly and T type magnetosensitive element array all are fixed in sensor skeleton 27, are provided with the arc wall that can laminate wire rope in sensor skeleton 27 towards wire rope's one side, are provided with wiring groove 26 in sensor skeleton 27 one side that is away from the arc wall, can install flexible PCB board 23 in this wiring groove 26, can electrically connect leakage magnetic flux magnetosensitive element array 28 and main magnetic flux magnetosensitive element array 29 on flexible PCB board 23 to carry out the magnetic flux and detect. The sensor skeleton 27 may be provided with a magnetic sensor lock 20, and the T-shaped magnetic sensor array, in particular, the position of the leakage magnetic flux magnetic sensor array 28 may be fixed to the sensor skeleton 27 by using the magnetic sensor lock 20. Fixing holes may be provided at end surfaces of both ends of the sensor bracket 14, and the sensor bracket 14 and the sensor skeleton 27 can be fixedly connected together. The sensor skeleton 27 is manufactured by adopting a 3D printing technology, and is matched with a U-shaped excitation magnetic circuit formed by the yoke 19, the permanent magnet 21 and the arc-shaped pole shoe 22 to realize the local magnetization of the steel wire rope; the leakage flux sensing element array 28 and the main flux sensing element array 29 integrated on the basis of the flexible PCB 23 form a T-shaped detection array, wherein the leakage flux sensing element array 28 detects leakage flux signals of defects, and the main flux sensing element array 29 detects main flux signals of defects, so that detection of two defect signals by a single sensor is realized.
The sensor holder 14 is used for fixing the sensor skeleton 27, and the sensor holder 14 is also fixedly connected with the scissor telescopic structure 32. A wiring hole 24 is arranged at one end of the sensor skeleton 27, and a cable connected with the flexible PCB 23 is electrically connected with the signal acquisition adapter plate through the wiring hole 24.
The magnetizing assembly comprises a yoke 19, an arc pole shoe 22, a permanent magnet 21 and other parts; the yoke 19 is in a strip shape and is arranged along the length direction parallel to the steel wire rope, two permanent magnets 21 are respectively arranged at two ends of the yoke 19, an arc-shaped pole shoe 22 is correspondingly arranged at each permanent magnet 21, and the arc-shaped pole shoe 22 is provided with an arc-shaped notch to be attached to the outer wall of the steel wire rope. When the magnetic field sensor is used, the two arc pole shoes 22 are attached to the steel wire rope, so that the steel wire rope between the two arc pole shoes is magnetized, and due to the fact that the two permanent magnets 21 are adopted, double-loop permanent magnet magnetic circuit excitation can be formed between magnetizing assemblies, then the magnetic flux change can be detected through the T-shaped magnetic sensor array, and the breakage or damage of the steel wire rope can be judged.
The T-shaped magnetic sensor array comprises a main magnetic flux sensor array 29 and a leakage magnetic flux sensor array 28, wherein one main magnetic flux sensor array 29 and two leakage magnetic flux sensor arrays 28 are distributed in a T shape. The area between the two arc pole shoes 22 and the wire rope attaching position forms a coverage area; the main magnetic flux magnetic sensor array 29 is arranged in the coverage area and is used for detecting the main magnetic flux change of the steel wire rope; the leakage magnetic flux sensing element is arranged outside the coverage area and is used for detecting the leakage magnetic flux change of the steel wire rope.
The unique T-shaped magnetic sensor array is used for detecting the leakage magnetic flux at the defect position of the surface of the steel wire and the change of the main magnetic flux of the magnetic circuit caused by the defect, so that the detection speed and the accuracy can be improved.
The above examples are presented for the purpose of illustration only and are not intended to be limiting of the embodiments; it is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present technology.
Claims (6)
1. Magnetic induction flaw detection device suitable for wire rope group of different intervals, wire rope group (1) are including many wire ropes side by side, its characterized in that: comprises a flaw detection bracket (31), a spacing adjusting mechanism and a magnetic induction flaw detection unit (3);
Two flaw detection brackets (31) are arranged, and instrument locks (4) matched with each other are respectively arranged on the two transverse sides of the two flaw detection brackets (31);
The interval adjusting mechanism is arranged on the flaw detection bracket (31) and comprises an adjusting screw (10) and a scissor type telescopic structure (32); the arrangement direction of the adjusting screw (10) is the same as that of the scissor type telescopic structure (32), and the telescoping action of the scissor type telescopic structure (32) can be controlled;
the magnetic induction flaw detection units (3) are arranged on the scissor type telescopic structure (32) in parallel and correspond to the steel wire ropes one by one;
the magnetic induction flaw detection unit (3) comprises a magnetization component and a T-shaped magnetic sensitive element array; the magnetizing component can contact the two ends of a section of steel wire rope and magnetize the section of steel wire rope locally; the T-shaped magnetic sensor array can detect the magnetic flux change of the section of steel wire rope;
the scissors telescoping structure (32) includes a plurality of middle cross sets and a plurality of end cross sets; the middle cross group comprises two long linkage rods (12), and the two long linkage rods (12) are rotatably connected in a cross mode; the end parts of two adjacent middle crossed group long linkage rods (12) are connected with each other in a rotating way; the end part crossing group comprises two short linkage rods (13), the two short linkage rods (13) are connected with each other in a rotating way, and the end part crossing group is connected with the end part of the middle part crossing group long linkage rod (12) in a rotating way;
The magnetic induction flaw detection unit (3) further comprises a sensor bracket (14), part of the sensor bracket (14) is connected to the cross connection part of the middle cross group, and part of the sensor bracket (14) is connected to the end cross group; the adjusting screw (10) is rotationally connected with the sensor bracket (14) at one end of the scissor type telescopic structure (32), and the adjusting screw (10) is in threaded transmission connection with the sensor bracket (14) at the other end of the scissor type telescopic structure (32);
A circular guide rod (9) is arranged above and below the adjusting screw rod (10), the circular guide rod (9) is relatively fixed with the flaw detection support (31), a lock nut (11) is arranged on each magnetic induction flaw detection unit (3), and the lock nuts (11) can vertically abut against the circular guide rod (9) to limit the magnetic induction flaw detection units (3);
The T-shaped magnetic sensing element array comprises a main magnetic flux sensing element array (29) and a leakage magnetic flux sensing element array (28), and one main magnetic flux sensing element array (29) and two leakage magnetic flux sensing element arrays (28) are distributed in a T shape.
2. The magnetic induction flaw detection device applicable to steel wire rope groups with different pitches according to claim 1, wherein: the flaw detection device is characterized in that an encoder (6) is relatively fixed on the flaw detection support (31), a guide wheel (7) is connected to the encoder (6), and the guide wheel (7) can be tightly attached to a steel wire rope to rotate under the action of friction force.
3. The magnetic induction flaw detection device applicable to steel wire rope groups with different pitches according to claim 1, wherein: the magnetizing assembly comprises a yoke (19), an arc-shaped pole shoe (22) and a permanent magnet (21); the yoke (19) is strip-shaped and parallel to the length direction of the steel wire rope, two ends of the yoke (19) are respectively provided with a permanent magnet (21), each permanent magnet (21) is correspondingly provided with an arc pole shoe (22), and the arc pole shoes (22) are provided with arc-shaped notches to be attached to the outer wall of the steel wire rope.
4. A magnetic induction inspection apparatus adapted for use with wire rope sets of different spacing as claimed in claim 3, wherein: the area between the two arc pole shoes (22) and the joint position of the steel wire rope forms a coverage area; the main magnetic flux magnetic sensor array (29) is arranged in the coverage area and is used for detecting the main magnetic flux change of the steel wire rope; the leakage magnetic flux sensing element is arranged outside the coverage area and is used for detecting the leakage magnetic flux change of the steel wire rope.
5. The magnetic induction flaw detection device applicable to different-spacing steel wire rope groups according to claim 4, wherein: the magnetizing assembly and the T-shaped magnetic sensor array are both fixed on a sensor framework (27), an arc-shaped groove which can be attached to a steel wire rope is formed in the sensor framework (27), a magnetic sensor lock catch (20) is arranged on the sensor framework (27) on the back side of the arc-shaped groove, and the T-shaped magnetic sensor array can be fixed by the magnetic sensor lock catch (20).
6. The magnetic induction flaw detection device applicable to steel wire rope groups with different pitches according to claim 1, wherein: the two vertical sides of the flaw detection support (31) are provided with steel wire rope limiting pieces (2), and the steel wire rope limiting pieces (2) of the two flaw detection supports (31) are matched to tightly prop against a steel wire rope so as to reduce shaking of the steel wire rope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111296326.XA CN113984884B (en) | 2021-11-03 | 2021-11-03 | Magnetic induction flaw detection device suitable for steel wire rope groups with different pitches |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111296326.XA CN113984884B (en) | 2021-11-03 | 2021-11-03 | Magnetic induction flaw detection device suitable for steel wire rope groups with different pitches |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113984884A CN113984884A (en) | 2022-01-28 |
| CN113984884B true CN113984884B (en) | 2024-05-10 |
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