CN113984884A - Magnetic induction flaw detection device suitable for different-interval steel wire rope sets - Google Patents
Magnetic induction flaw detection device suitable for different-interval steel wire rope sets Download PDFInfo
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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 each steel wire rope group comprises a plurality of steel wire ropes which are arranged side by side, and each steel wire rope group comprises a flaw detection support, an interval adjusting mechanism and a magnetic induction flaw detection unit; 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 shear type telescopic structure, and meanwhile, the magnetic induction flaw detection units can be positioned by matching with a locking nut, 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 special T-shaped magnetic sensor array is utilized to detect the magnetic flux leakage at the surface defect of the steel wire and the magnetic circuit main magnetic flux change caused by the defect, so that the detection speed and the detection 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 intervals.
Background
The vertical lift elevator usually adopts a steel wire rope group consisting of a plurality of parallel steel wire ropes to carry out lifting control, and in the long-term operation process of the vertical lift elevator, the steel wire rope group has the defects of wire breakage, abrasion and the like, so that potential safety hazards are caused. At present, a magnetic flux leakage method is a mature method for nondestructive detection and flaw detection of the defects of the steel wire rope, and various magnetic flux leakage sensors capable of detecting the magnetic flux leakage of the elevator steel wire rope set are developed.
Patent nos. CN201710408465.4, CN202010070888.1, and cn202011168320.x disclose partial applications of detecting defects of a wire rope by magnetic flux leakage.
However, in the in-service use, because the rope interval of the elevator wire rope group that different elevator manufacturers adopted all has the difference, lead to single array magnetic leakage sensor application scope limited, in addition, because can't carry out all-round cover to wire rope's global among the current detection device for the wire rope of elevator need detect and just can accomplish whole work of detecting a flaw many times, for solving earlier and later magnetic leakage sensor, can't once only carry out the problem of short-term test to wire rope group.
Disclosure of Invention
In order to solve the above-mentioned problem that prior art exists, this scheme provides a magnetic induction flaw detection device suitable for different interval wire rope group.
The technical scheme adopted by the invention is as follows:
a magnetic induction flaw detection device suitable for steel wire rope sets with different intervals is disclosed, wherein each steel wire rope set comprises a plurality of steel wire ropes arranged side by side and comprises a flaw detection support, an interval adjusting mechanism and a magnetic induction flaw detection unit;
the two flaw detection supports are provided with instrument lock catches which are matched with each other respectively at the two transverse sides;
the distance adjusting mechanism is arranged on the flaw detection support and comprises an adjusting screw rod and a shear type telescopic structure; the arrangement directions of the adjusting screw and the scissor type telescopic structure are the same, and the telescopic action of the scissor type telescopic structure can be controlled;
the magnetic induction flaw detection units are arranged on the shear type telescopic structure in parallel and correspond to the steel wire ropes one by one;
the magnetic induction flaw detection unit comprises a magnetization assembly and a T-shaped magnetic sensing element array; the magnetizing assemblies can contact two ends of a section of steel wire rope and magnetize the section of steel wire rope locally; the T-shaped magnetic sensing element array can detect the magnetic flux change of the steel wire rope.
As a complement or alternative structural design to the above solution: the scissor type telescopic structure comprises a plurality of middle cross groups and a plurality of end cross groups; the middle cross group comprises two long linkage rods which are in rotatable cross connection; the end parts of two adjacent middle crossed long linkage rods are mutually and rotatably connected; the end part cross group comprises two short linkage rods which are mutually and rotatably connected, and the end part cross group is rotatably connected with the end part of the middle part cross group long linkage rod.
As a complement or alternative structural design to the above solution: the magnetic induction flaw detection unit also comprises a sensor bracket, wherein part of the sensor bracket is connected at the cross connection position of the middle cross group, and part of the sensor bracket is connected at the end cross group; the adjusting screw rod is rotatably connected with the sensor support at one end of the scissor type telescopic structure, and the adjusting screw rod is in threaded transmission connection with the sensor support at the other end of the scissor type telescopic structure.
As a complement or alternative structural design to the above solution: circular guide rods are respectively arranged above and below the adjusting screw rods and are relatively fixed with the flaw detection support, and each magnetic induction flaw detection unit is provided with a locking nut which can vertically abut against the circular guide rods to limit the magnetic induction flaw detection units.
As a complement or alternative structural design to the above 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 of the guide wheel.
As a complement or alternative structural design to the above solution: the magnetizing assembly comprises a yoke iron, an arc-shaped pole shoe and a permanent magnet; the yoke iron is in a long strip shape and parallel to the length direction of the steel wire rope, the two ends of the yoke iron are respectively provided with a permanent magnet, each permanent magnet is correspondingly provided with an arc-shaped pole shoe, and each arc-shaped pole shoe is provided with an arc-shaped notch so as to be attached to the outer wall of the steel wire rope.
As a complement or alternative structural design to the above solution: the T-shaped magnetic sensor array comprises a main magnetic flux magnetic sensor array and a leakage magnetic flux magnetic sensor array, wherein one main magnetic flux magnetic sensor array and two leakage magnetic flux magnetic sensor arrays are distributed in a T shape.
As a complement or alternative structural design to the above solution: the region between the two arc-shaped pole shoes and the joint position of the steel wire rope forms a coverage region; the main magnetic flux magnetic sensing element array is arranged in the coverage area and is used for detecting the main magnetic flux change of the steel wire rope; the leakage flux magneto-sensitive element is arranged outside the covering area and is used for detecting the leakage flux change of the steel wire rope.
As a complement or alternative structural design to the above solution: the magnetizing assembly and the T-shaped magnetic sensing element array are fixed on the sensor framework, the sensor framework is provided with an arc-shaped groove capable of being attached to a steel wire rope, a magnetic sensing element lock catch is arranged on the sensor framework on the back side of the arc-shaped groove, and the T-shaped magnetic sensing element array can be fixed by the magnetic sensing element lock catch.
As a complement or alternative structural design to the above solution: the steel wire rope limiting parts are arranged on the two vertical sides of the flaw detection supports, and the steel wire rope limiting parts of the two flaw detection supports are matched with and abut against the steel wire rope to reduce the shaking of the steel wire rope.
The invention has the beneficial effects that:
1. according to the magnetic induction flaw detection device suitable for the steel wire rope groups with different intervals, the two flaw detection supports which are symmetrically arranged are used for being matched symmetrically and clamping the steel wire rope groups, and the magnetic induction flaw detection units arranged on the two flaw detection supports can respectively cover half peripheral surfaces of the steel wire rope, 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, the synchronous adjustment of the intervals of the magnetic induction flaw detection units can be realized through the shear type telescopic structure, and the magnetic induction flaw detection units can be positioned by matching with the 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;
3. according to the scheme, the unique T-shaped magnetic sensor array is utilized to detect the magnetic flux leakage at the surface defect 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 structure diagram of a magnetic induction flaw detector in this embodiment;
FIG. 2 is a schematic view 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 magnetic flux leakage detection signal of a typical defect of a wire rope.
In the figure: 1-steel wire rope group; 2-a wire rope limiting piece; 3-magnetic induction flaw detection unit; 4-instrument locking and buckling; 5-distance adjusting knob; 6-an encoder; 7-a guide wheel; 8-a sensor holder; 9-circular guide rod; 10-adjusting the screw; 11-a lock nut; 12-long linkage bar; 13-short linkage bar; 14-a sensor holder; 15-instrument housing; 16-lock nut runner; 17-a remo linker; 18-PCB board protective case; 19-a yoke; 20-magnetic sensitive element locking; 21-a permanent magnet; 22-arc pole shoe; 23-a flexible PCB board; 24-a wiring hole; 25-sensor holder fixing holes; 26-a wiring groove; 27-a sensor skeleton; 28-an array of leakage flux magneto-sensitive elements; 29-an array of main flux magneto-sensitive elements; 30-a flaw detector; 31-flaw detection support; 32-scissor jack configuration.
Detailed Description
The technical solutions in the embodiments will be described clearly and completely with reference to the accompanying drawings, and the described embodiments are only a part of the embodiments, but not all embodiments, and all other embodiments obtained by those skilled in the art without creative efforts will belong to the protection scope of the present solution based on the embodiments in the present solution.
Example 1
As shown in fig. 1 to 4, the present embodiment designs a magnetic induction flaw detection apparatus suitable for wire rope sets with different pitches, where the wire rope set 1 includes a plurality of wire ropes arranged side by side, and includes two flaw detection supports 31, one flaw detector 30 is disposed on each flaw detection support 31, and a distance measuring instrument is disposed on one flaw detection support 31.
The flaw detection support 31 comprises an arched connecting piece, a vertical arm plate and a steel wire rope limiting piece 2; two vertical wallboards are arranged side by side, are connected with a wire rope locating part 2 between the upper end of two vertical wallboards and between the lower extreme respectively, and this wire rope locating part 2 is cylindrically to can be made by rubber materials, this wire rope locating part 2 can be used for reducing wire rope's shake. The arch connecting piece is connected between the middle parts of the two vertical arm plates and can be used for holding hands.
The instrument lock catches 4 can be arranged on the two transverse sides of the flaw detection support 31, and the two flaw detection supports 31 can be tightly held on the two sides of the steel wire rope group 1 through the instrument lock catches 4, so that flaw detection operation of the flaw detector 30 on the two sides of the steel wire rope group 1 is facilitated.
Be provided with a distance measurement appearance on the instrument shell 15 on the appearance 30 of detecting a flaw, this distance measurement appearance includes encoder 6 and guide pulley 7, encoder 6 and instrument shell 15 relatively fixed, and guide pulley 7 connects on encoder 6, the relatively fixed encoder 6 that has on the support 31 of detecting a flaw, at the detection process of detecting a flaw, guide pulley 7 pastes tight one of them wire rope to guide pulley 7 receives frictional force to rotate, then drives encoder 6, thereby realizes the wire rope range finding, and the staff can obtain wire rope's damage position and length according to the range finding 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 the like.
The PCB protective shell 18 is connected to the instrument shell 15, a signal acquisition adapter plate is arranged in the PCB protective shell 18 and can be electrically connected with the encoder 6 and the magnetic induction flaw detection units 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 the acquisition board card through a Raymond connector 17 arranged on the PCB protective shell 18, so that data uploading is achieved.
The distance adjusting mechanism is fixed in the instrument shell 15 and comprises an adjusting screw 10 and a shear type telescopic structure 32; the arrangement direction of the adjusting screw 10 is the same as that of the scissor type telescopic structure 32, the adjusting screw 10 is rotatably 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 rotatably 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 support 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 by the distance adjusting knob 5; thereby controlling the interval between the magnetic induction flaw detection units 3.
The scissor jack 32 includes a plurality of middle cross-over sets and a plurality of end cross-over sets; the middle cross group comprises two long linkage rods 12, and the two long linkage rods 12 are in rotatable cross connection; the end parts of two adjacent middle crossed long linkage rods 12 are mutually and rotatably connected; the end part cross group comprises two short linkage rods 13, the two short linkage rods 13 are mutually and rotatably connected, and the end part cross group is rotatably connected with the end part of the middle part cross group long linkage rod 12.
A plurality of magnetic induction flaw detection units 3 are arranged on the scissor type telescopic structure 32, part of the sensor supports 14 are connected at the cross connection position of the middle cross group, and part of the sensor supports 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. By the aid of the shear type telescopic structure 32, the magnetic induction flaw detection units 3 can be adjusted at equal intervals, and therefore the shear type telescopic structure is suitable for detecting defects of elevator steel wire rope sets 1 of different models.
The magnetic induction flaw detection unit 3 comprises a magnetizing assembly, a T-shaped magnetic sensing element array, a sensor bracket 14, a sensor framework 27 and the like. Wherein, magnetization subassembly and T type magnetic sensor array all are fixed in sensor skeleton 27, are provided with the arc wall that can laminate wire rope in sensor skeleton 27 one side towards wire rope, are provided with trough 26 in one side of sensor skeleton 27 arc wall dorsad, can install flexible PCB board 23 in this trough 26, can connect leakage flux magnetic sensor array 28 and main flux magnetic sensor array 29 on the flexible PCB board 23 electrically to carry out the magnetic flow and detect. The sensor frame 27 may be provided with a magnetic sensor element fastener 20, and the T-shaped magnetic sensor element array, particularly, the position of the leakage flux magnetic sensor element array 28 may be fixed to the sensor frame 27 by using the magnetic sensor element fastener 20. Fixing holes may be provided at end surfaces of both ends of the sensor holder 14 to enable the sensor holder 14 and the sensor frame 27 to be fixedly connected together. The sensor framework 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 magneto-sensitive element array 28 and the main flux magneto-sensitive element array 29 integrated based on the flexible PCB 23 form a T-shaped detection array, wherein the leakage flux magneto-sensitive element array 28 detects leakage flux signals of defects, and the main flux magneto-sensitive element array 29 detects main flux signals of the defects, so that the detection of two defect signals by a single sensor is realized.
The sensor holder 14 is used for fixing the sensor frame 27, and the sensor holder 14 is also fixedly connected with the scissor-type telescopic structure 32. A wiring hole 24 is arranged at one end of the sensor framework 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-shaped pole shoe 22, a permanent magnet 21 and the like; the yoke 19 is long and arranged in the length direction parallel to the steel wire rope, the two ends of the yoke 19 are respectively provided with a permanent magnet 21, each permanent magnet 21 is correspondingly provided with an arc-shaped pole shoe 22, and each arc-shaped pole shoe 22 is provided with an arc-shaped notch so as to be attached to the outer wall of the steel wire rope. During the use, two arc-shaped pole shoes 22 all laminate to wire rope to make the wire rope section between the two magnetize, and owing to adopted two permanent magnet 21, thereby can constitute out the excitation of two return circuits permanent magnetism magnetic circuit between the magnetization subassembly, then can detect the magnetic flux change through T type magnetic sensing element array, can judge wire rope fracture or damage.
The T-shaped magnetic sensor array comprises a main magnetic flux magnetic sensor array 29 and a leakage magnetic flux magnetic sensor array 28, wherein one main magnetic flux magnetic sensor array 29 and two leakage magnetic flux magnetic sensor arrays 28 are distributed in a T shape. The area between the two arc-shaped 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 flux magneto-sensitive element is arranged outside the covering area and is used for detecting the leakage flux change of the steel wire rope.
The structure in this embodiment is suitable for different interval elevator wire rope group 1, can realize difunctional magnetic leakage sensing unit's equidistant regulation to be applicable to the defect detection of different model elevator wire rope group 1.
When the structure in this embodiment has a typical defect on the surface of the steel wire rope, because of the special winding structure of the steel wire rope, a periodic burst wave signal exists in the detection signal. When the surface defect part is passed through, the T-shaped magnetic sensing element 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 verified, so that the defects of the traditional leakage magnetic detection sensor can be overcome, the defect detection capability of the sensor is improved, and an example graph of the detection result is shown in figure 5.
Example 2
As shown in fig. 2 to 4, the present embodiment designs a magnetic induction flaw detection unit 3 for flaw detection of a wire rope.
The magnetic induction flaw detection unit 3 comprises a magnetizing assembly, a T-shaped magnetic sensing element array, a sensor support 14, a sensor framework 27 and the like. Wherein, magnetization subassembly and T type magnetic sensor array all are fixed in sensor skeleton 27, are provided with the arc wall that can laminate wire rope in sensor skeleton 27 one side towards wire rope, are provided with trough 26 in one side of sensor skeleton 27 arc wall dorsad, can install flexible PCB board 23 in this trough 26, can connect leakage flux magnetic sensor array 28 and main flux magnetic sensor array 29 on the flexible PCB board 23 electrically to carry out the magnetic flow and detect. The sensor frame 27 may be provided with a magnetic sensor element fastener 20, and the T-shaped magnetic sensor element array, particularly, the position of the leakage flux magnetic sensor element array 28 may be fixed to the sensor frame 27 by using the magnetic sensor element fastener 20. Fixing holes may be provided at end surfaces of both ends of the sensor holder 14 to enable the sensor holder 14 and the sensor frame 27 to be fixedly connected together. The sensor framework 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 magneto-sensitive element array 28 and the main flux magneto-sensitive element array 29 integrated based on the flexible PCB 23 form a T-shaped detection array, wherein the leakage flux magneto-sensitive element array 28 detects leakage flux signals of defects, and the main flux magneto-sensitive element array 29 detects main flux signals of the defects, so that the detection of two defect signals by a single sensor is realized.
The sensor holder 14 is used for fixing the sensor frame 27, and the sensor holder 14 is also fixedly connected with the scissor-type telescopic structure 32. A wiring hole 24 is arranged at one end of the sensor framework 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-shaped pole shoe 22, a permanent magnet 21 and the like; the yoke 19 is long and arranged in the length direction parallel to the steel wire rope, the two ends of the yoke 19 are respectively provided with a permanent magnet 21, each permanent magnet 21 is correspondingly provided with an arc-shaped pole shoe 22, and each arc-shaped pole shoe 22 is provided with an arc-shaped notch so as to be attached to the outer wall of the steel wire rope. During the use, two arc-shaped pole shoes 22 all laminate to wire rope to make the wire rope section between the two magnetize, and owing to adopted two permanent magnet 21, thereby can constitute out the excitation of two return circuits permanent magnetism magnetic circuit between the magnetization subassembly, then can detect the magnetic flux change through T type magnetic sensing element array, can judge wire rope fracture or damage.
The T-shaped magnetic sensor array comprises a main magnetic flux magnetic sensor array 29 and a leakage magnetic flux magnetic sensor array 28, wherein one main magnetic flux magnetic sensor array 29 and two leakage magnetic flux magnetic sensor arrays 28 are distributed in a T shape. The area between the two arc-shaped 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 flux magneto-sensitive element is arranged outside the covering area and is used for detecting the leakage flux change of the steel wire rope.
The special T-shaped magnetic sensor array is utilized to detect the magnetic flux leakage at the surface defect of the steel wire and the magnetic circuit main magnetic flux change caused by the defect, so that the detection speed and the detection accuracy can be improved.
The above examples are merely for clearly illustrating the examples and are not intended to limit the embodiments; and are neither required nor exhaustive of all embodiments. And obvious variations or modifications of this technology may be resorted to while remaining within the scope of the technology.
Claims (10)
1. The utility model provides a magnetic induction flaw detection device suitable for different interval wire rope group, wire rope group (1) is including many wire rope 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);
the two flaw detection supports (31) are provided, and instrument lock catches (4) which are matched with each other are respectively arranged on the two transverse sides of the two flaw detection supports (31);
the distance adjusting mechanism is arranged on the flaw detection support (31) and comprises an adjusting screw rod (10) and a shear 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 telescopic action of the scissor type telescopic structure (32) can be controlled;
the magnetic induction flaw detection units (3) are arranged on the shear 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 sensing element array; the magnetizing assemblies can contact two ends of a section of steel wire rope and magnetize the section of steel wire rope locally; the T-shaped magnetic sensing element array can detect the magnetic flux change of the steel wire rope.
2. The magnetic induction flaw detection device suitable for the steel wire rope sets with different pitches according to claim 1, characterized in that: the scissor jack (32) includes a plurality of middle cross-over sets and a plurality of end cross-over sets; the middle cross group comprises two long linkage rods (12), and the two long linkage rods (12) are in rotatable cross connection; the end parts of two adjacent middle crossed long linkage rods (12) are mutually and rotatably connected; the end part cross group comprises two short linkage rods (13), the two short linkage rods (13) are mutually rotatably connected, and the end part cross group is rotatably connected to the end part of the middle part cross group long linkage rod (12).
3. The magnetic induction flaw detection device suitable for the steel wire rope sets with different pitches according to claim 2, characterized in that: the magnetic induction flaw detection unit (3) further comprises a sensor bracket (14), wherein part of the sensor bracket (14) is connected to the cross connection position of the middle cross group, and part of the sensor bracket (14) is connected to the end cross group; the adjusting screw rod (10) is rotatably connected with the sensor support (14) at one end of the scissor type telescopic structure (32), and the adjusting screw rod (10) is in threaded transmission connection with the sensor support (14) at the other end of the scissor type telescopic structure (32).
4. The magnetic induction flaw detection device suitable for the steel wire rope sets with different pitches according to claim 1, characterized in that: circular guide rods (9) are respectively arranged above and below the adjusting screw rods (10), the circular guide rods (9) and the flaw detection support (31) are relatively fixed, each magnetic induction flaw detection unit (3) is provided with a locking nut (11), and the locking nuts (11) can vertically abut against the circular guide rods (9) to limit the magnetic induction flaw detection units (3).
5. The magnetic induction flaw detection device suitable for the steel wire rope sets with different pitches according to claim 1, characterized in that: the flaw detection support (31) is relatively fixed with an encoder (6), the encoder (6) is connected with a guide wheel (7), and the guide wheel (7) can be attached to the steel wire rope to rotate under the action of friction force.
6. The magnetic induction flaw detection device suitable for the steel wire rope sets with different pitches according to claim 1, characterized in that: the magnetizing assembly comprises a yoke (19), an arc-shaped pole shoe (22) and a permanent magnet (21); the yoke (19) is long-strip-shaped and parallel to the length direction of the steel wire rope, the two ends of the yoke (19) are respectively provided with a permanent magnet (21), each permanent magnet (21) is correspondingly provided with an arc-shaped pole shoe (22), and each arc-shaped pole shoe (22) is provided with an arc-shaped notch so as to be attached to the outer wall of the steel wire rope.
7. The magnetic induction flaw detection device suitable for the steel wire rope sets with different pitches according to claim 1, characterized in that: the T-shaped magnetic sensing element array comprises a main magnetic flux magnetic sensing element array (29) and a leakage magnetic flux magnetic sensing element array (28), and one main magnetic flux magnetic sensing element array (29) and two leakage magnetic flux magnetic sensing element arrays (28) are distributed in a T shape.
8. The magnetic induction flaw detection device suitable for the steel wire rope sets with different pitches according to claim 7, characterized in that: the area between the two arc-shaped pole shoes (22) and the joint position of the steel wire rope forms a coverage area; the main magnetic flux magnetic sensing element 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 flux magneto-sensitive element is arranged outside the covering area and is used for detecting the leakage flux change of the steel wire rope.
9. The magnetic induction flaw detection device suitable for the steel wire rope sets with different pitches according to claim 8, characterized in that: magnetization subassembly and T type magnetic sensor array all are fixed in sensor skeleton (27), are provided with the arc wall that can laminate wire rope on this sensor skeleton (27), are provided with magnetic sensor hasp (20) on arc wall dorsal part's sensor skeleton (27), and T type magnetic sensor array can be fixed in this magnetic sensor hasp (20).
10. The magnetic induction flaw detection device suitable for the steel wire rope sets with different pitches according to claim 1, characterized in that: the steel wire rope limiting parts (2) are arranged on the two vertical sides of the flaw detection supports (31), and the steel wire rope limiting parts (2) of the two flaw detection supports (31) are matched with and abut against the steel wire rope to reduce the vibration 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 |
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| CN114407365A (en) * | 2022-03-03 | 2022-04-29 | 武汉必盈生物科技有限公司 | Monitoring mechanism of external fixation 3D printer of fracture |
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