Multifunctional magnetic particle flaw detector

Abstract

The utility model discloses a multifunctional magnetic powder flaw detector which comprises a main body frame, a darkroom, and a first flaw detection device, a second flaw detection device, a third flaw detection device and a magnetic powder spraying device which are arranged in the darkroom, the third flaw detection devices are arranged on one side of the second flaw detection device in the same row, the magnetic powder spraying device is arranged between the first flaw detection device and the second flaw detection device, guide rails are arranged on the two sides of the main body frame, a cross beam is arranged on the guide rails on the two sides in a sliding mode, and a lifting appliance is arranged on the cross beam. By arranging a plurality of flaw detection devices, circumferential, longitudinal and composite magnetization of workpieces can be realized, the magnetic powder flaw detection device can be used for magnetic powder flaw detection of medium-large and small pin shaft, rod and pipe parts, and can also be used for magnetic powder flaw detection of various special-shaped workpieces, so that the functionality and the practicability of the equipment are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of magnetic particle flaw detection, particularly to a multifunctional magnetic particle flaw detector. BACKGROUND

[0002] Magnetic particle flaw detection is to use the difference between the magnetic permeability of the leakage magnetic field of the workpiece defect (such as crack, slag inclusion, and grain) and the magnetic powder. After magnetization, the magnetic field of the discontinuous part of these materials will be distorted, forming partial magnetic flux leakage, which causes the workpiece surface to produce a leakage magnetic field, thereby attracting the magnetic powder to form a magnetic powder accumulation - magnetic mark at the defect. Under appropriate lighting conditions, the defect position and shape are shown. By observing and interpreting the accumulation of these magnetic powders, magnetic particle flaw detection is achieved.

[0003] At present, there are many types of magnetic particle flaw detection equipment for shafts, pipes, beams and other special-shaped workpieces, but they are more targeted. Certain types of equipment can only be used for flaw detection of specific types of products. For example, the steel pipe inner and outer wall intelligent magnetic particle flaw detector disclosed in patent CN117368304A can only be used for flaw detection of pipe products. The magnetic particle flaw detector disclosed in patent CN110426447A can also only be used for flaw detection of rod products. Moreover, some equipment can only be used for circumferential magnetization, while some equipment can only be used for longitudinal magnetization, which is relatively single in functionality, and therefore needs to be improved. UTILITY MODEL CONTENT

[0004] To solve the above technical problems, the utility model discloses a multifunctional magnetic particle flaw detector, which comprises a main frame, a darkroom, a first flaw detection device, a second flaw detection device, a third flaw detection device and a magnetic powder spraying device arranged in the darkroom. The first flaw detection device and the second flaw detection device are arranged side by side and spaced apart. The third flaw detection device is arranged on one side of the second flaw detection device. The magnetic powder spraying device is arranged between the first flaw detection device and the second flaw detection device. The main frame is provided with guide rails on both sides. A cross beam is slidably arranged on the guide rails. A lifting device is arranged on the cross beam.

[0005] The first flaw detection device comprises a first rack, a first drive motor, a first drive shaft, a first magnetizing mechanism and a second magnetizing mechanism. The first drive motor is arranged on one side of the first rack and is in transmission connection with the first drive shaft. The first magnetizing mechanism is symmetrically arranged on both sides of the first rack and is in transmission connection with the first drive shaft. A plurality of groups of second magnetizing mechanisms are arranged between the first magnetizing mechanisms on both sides.

[0006] The second flaw detection device comprises a second rack, a second drive motor, a second drive shaft and a third magnetizing mechanism. The second drive motor is arranged on one side of the second rack and is in transmission connection with the second drive shaft. The third magnetizing mechanism is symmetrically arranged on both sides of the second rack and is in transmission connection with the second drive shaft.

[0007] The third flaw detection device comprises a rectangular frame, a rotating disc, a rotating motor and a fourth magnetizing coil, the rectangular frame is movably arranged on the second rack, the rotating disc is arranged on the inner bottom of the rectangular frame, the rotating motor is in transmission connection with the rotating disc, and the fourth magnetizing coil is arranged around the four side walls of the rectangular frame.

[0008] Further, the first magnetizing mechanism comprises a positioning shaft, a positioning base, a first cylinder and a first transmission assembly, the positioning shaft is rotatably arranged on the first rack through a rotating support, the positioning base is arranged on the front end of the positioning shaft, the first cylinder is arranged on the rear end of the positioning shaft, and the positioning shaft is in transmission connection with the first driving shaft through the first transmission assembly.

[0009] Further, the first transmission assembly comprises a first transmission shaft and a second transmission shaft, and the first driving shaft, the first transmission shaft, the second transmission shaft and the positioning shaft are all in transmission connection through sprockets and chains.

[0010] Further, the first magnetizing mechanism further comprises a first horizontal moving cylinder, a first vertical moving cylinder and a first magnetizing coil, the first horizontal moving cylinder is arranged on the side wall above the first rack and is connected with a sliding plate, the sliding plate is in sliding connection with the top of the first rack through a sliding rail assembly, the first vertical moving cylinder is arranged on the front end of the sliding plate, and the first magnetizing coil is arranged on the lower end of the first vertical moving cylinder.

[0011] Further, the second magnetizing mechanism comprises a second cylinder, a rack, a gear and a semicircular magnetizing coil, the second cylinder is arranged on the first rack in the longitudinal direction and is in transmission connection with the rack, the gears are in meshing arrangement on the two sides of the rack, and each of the gears is coaxially provided with a semicircular magnetizing coil on one side.

[0012] Further, the end of one of the semicircular magnetizing coils is provided with a positioning slot, a third cylinder is arranged on the outer wall of the positioning slot, a locking block is arranged in the positioning slot, the piston rod of the third cylinder penetrates into the positioning slot and is connected with the locking block, and the end of the other semicircular magnetizing coil is provided with a plug connector.

[0013] Further, the side of the rectangular frame is provided with a second horizontal moving cylinder, the cylinder body of the second horizontal moving cylinder is fixedly arranged on the second rack, the piston rod end is in transmission connection with the rectangular frame, and the rectangular frame is in sliding connection with the second rack through a sliding rail assembly.

[0014] Further, the bottom of the rotating disc is provided with a supporting plate, and a plurality of supporting rollers are uniformly arranged between the rotating disc and the supporting plate in a circumferential manner.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The utility model discloses a plurality of flaw detection devices can be realized the work piece's circumference, longitudinal and compound magnetization, can be used for medium and large and small pin shaft type, pole type, pipe type part's magnetic particle inspection, also can be used for the magnetic particle inspection of various special-shaped workpieces, and further improve the functionality and practicality of equipment. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the embodiment of the utility model, the following will be briefly introduced the drawing needed in the embodiment, obviously, the drawing in the following description only some embodiments of the utility model, for ordinary skilled person in the art, under the premise of not paying the creativity labor intensity, can also obtain other drawings according to these drawings.

[0018] Figure 1 It is the external structure schematic diagram of the utility model;

[0019] Figure 2 It is the internal structure schematic diagram of the utility model;

[0020] Figure 3 It is the overhead structure diagram of the utility model;

[0021] Figure 4 It is the structure schematic diagram of first flaw detection device in the utility model;

[0022] Figure 5 It is the local structure schematic diagram of first flaw detection device in the utility model;

[0023] Figure 6 It is Figure 5 the local structure enlarged view of A in the utility model;

[0024] Figure 7 It is the local structure schematic diagram of first magnetizing mechanism in the utility model;

[0025] Figure 8 It is the structure schematic diagram of second flaw detection device and third flaw detection device in the utility model;

[0026] Figure 9 It is the side structure schematic diagram of third flaw detection device in the utility model.

[0027] REFERENCE NUMERALS:

[0028] 10-main body frame;

[0029] 20-darkroom;

[0030] 30-first flaw detection device, 31-first rack, 32-first drive motor, 33-first drive shaft, 34-first magnetizing mechanism, 341-positioning shaft, 342-positioning seat, 343-first air cylinder, 344-rotary support, 345-first transmission shaft, 346-second transmission shaft, 347-first horizontal moving air cylinder, 348-first vertical moving air cylinder, 349-first magnetizing coil, 35-second magnetizing mechanism, 351-second air cylinder, 352-rack, 353-gear, 354-semi-circular magnetizing coil, 355-positioning slot, 356-third air cylinder, 357-locking block, 358-plug, 36-sliding plate, 37-sliding rail assembly;

[0031] 40-second flaw detection device, 41-second rack, 42-second drive motor, 43-second drive shaft, 44-third magnetizing mechanism;

[0032] 50-third flaw detection device, 51-rectangular frame, 52-rotary disc, 53-rotary motor, 54-fourth magnetizing coil, 55-second horizontal moving air cylinder, 56-supporting plate, 57-supporting roller;

[0033] 60-magnetic powder spraying device;

[0034] 70-guide rail;

[0035] 80-cross beam;

[0036] 90-lifting appliance;

[0037] 100-illumination lamp. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application.

[0039] It should be noted that all the directionality indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directionality indications also change accordingly.

[0040] In addition, the description of "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features.

[0041] In the description of the embodiments, unless otherwise expressly specified and limited, the terms "set," "connect," etc., should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or a connection through an intermediate medium, or it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0042] like Figures 1-3 As shown, the multifunctional magnetic particle flaw detector in this embodiment includes a main frame 10, a darkroom 20, and a first flaw detector 30, a second flaw detector 40, a third flaw detector 50, and a magnetic powder spraying device 60 disposed inside the darkroom 20. The first flaw detector 30 and the second flaw detector 40 are arranged side by side and spaced apart. The third flaw detector 50 is arranged in the same row on one side of the second flaw detector 40. The magnetic powder spraying device 60 is disposed between the first flaw detector 30 and the second flaw detector 40 and is used to spray magnetic powder onto the workpiece to be inspected. The magnetic powder spraying device 60 can adopt conventional technical means in the art, which will not be described in detail here.

[0043] The main frame 10 is provided with guide rails 70 on both sides, and crossbeams 80 are slidably provided on the guide rails 70 on both sides. The crossbeams 80 are provided with lifting devices 90 for assisting in lifting the workpiece to be inspected. The top of the darkroom 20 or one side of each of the above-mentioned flaw detection devices is provided with lighting fixtures 100 for illuminating and inspecting the workpiece after it has been sprayed with magnetic powder and magnetized.

[0044] like Figure 4 As shown, the first flaw detection device 30 includes a first frame 31, a first drive motor 32, a first drive shaft 33, a first magnetization mechanism 34, and a second magnetization mechanism 35. The first drive motor 32 is located on one side of the first frame 31 and is connected to the first drive shaft 33 for transmission. The first magnetization mechanism 34 is symmetrically arranged on both sides of the first frame 31 and is connected to the first drive shaft 33 for transmission. Multiple sets of second magnetization mechanisms 35 are provided between the first magnetization mechanisms 34 on both sides.

[0045] like Figure 5 As shown, the first magnetization mechanism 34 includes a positioning shaft 341, a positioning seat 342, a first cylinder 343, and a first transmission assembly. The positioning shaft 341 is rotatably mounted on the first frame 31 via a rotating support 344. The positioning seat 342 is located at the front end of the positioning shaft 341, and the first cylinder 343 is located at the rear end of the positioning shaft 341. The positioning shaft 341 is connected to the first drive shaft 33 via the first transmission assembly.

[0046] The positioning shaft 341 has a keyway on its outer wall. The positioning shaft 341 and the rotating support 344 are connected by a key, so the two can slide relative to each other and rotate relative to each other.

[0047] The workpiece to be detected is placed on the first rack 31, and the first cylinders 343 on both sides push the positioning shaft 341 and the positioning seat 342 to approach the ends of the workpiece, so as to clamp the workpiece, and the first drive motor 32, the first drive shaft 33 and the first transmission assembly drive the positioning shaft 341 to rotate, so as to realize the rotation of the workpiece, thereby facilitating the spraying of magnetic powder and the detection of defects.

[0048] The first transmission assembly includes a first transmission shaft 345 and a second transmission shaft 346, and the first drive shaft 33, the first transmission shaft 345, the second transmission shaft 346 and the positioning shaft 341 are connected through chain wheels and chains.

[0049] As shown in Figure 7 The first magnetizing mechanism 34 further includes a first horizontal moving cylinder 347, a first vertical moving cylinder 348 and a first magnetizing coil 349. The first horizontal moving cylinder 347 is arranged on the upper side wall of the first rack 31 and connected with the sliding plate 36, the sliding plate 36 is slidably connected with the top of the first rack 31 through the sliding rail assembly 37, the first vertical moving cylinder 348 is arranged at the front end of the sliding plate 36, and the first magnetizing coil 349 is arranged at the lower end of the first vertical moving cylinder 348.

[0050] The first magnetizing coil 349 is located above the end of the workpiece by moving the sliding plate 36 to one side of the workpiece through the first horizontal moving cylinder 347, and then the first magnetizing coil 349 is moved downward and contacted with the end of the workpiece through the first vertical moving cylinder 348, so that the workpiece is circumferentially magnetized through the two first magnetizing coils 349. The magnetic lines generated after the workpiece is magnetized are distributed in the axial vertical plane of the workpiece and along the circumferential surface of the workpiece, and the magnetic lines are mutually parallel concentric circles.

[0051] As shown in Figures 5-6 The second magnetizing mechanism 35 includes a second cylinder 351, a rack 352, a gear 353 and a semicircular magnetizing coil 354. The second cylinder 351 is arranged longitudinally on the first rack 31 and is in transmission connection with the rack 352. The gear 353 is arranged on both sides of the rack 352 in meshing mode, and each gear 353 has a semicircular magnetizing coil 354 coaxially arranged on one side.

[0052] The end of one of the semicircular magnetizing coils 354 is provided with a positioning slot 355, the outer wall of the positioning slot 355 is provided with a third cylinder 356, the positioning slot 355 is provided with a locking block 357, the piston rod of the third cylinder 356 penetrates into the positioning slot 355 and is connected with the locking block 357, and the end of the other semicircular magnetizing coil 354 is provided with a plug connector 358.

[0053] After the workpiece is placed on the first rack 31, the second cylinder 351 drives the rack 352 to move longitudinally, and drives the gears 353 on both sides to rotate, thereby making the two semicircular magnetizing coils 354 rotate around the gears 353 to form a complete circular ring, wrapping the workpiece in the middle, and the plug-in head 358 is inserted into the positioning slot 355, and the third cylinder 356 drives the locking block 357 to press on the plug-in head 358, thereby realizing the locking of the two semicircular magnetizing coils 354.

[0054] The semicircular magnetizing coil 354 magnetizes the workpiece longitudinally, and the magnetic lines generated after the workpiece is magnetized are parallel to the axis of the workpiece.

[0055] The first flaw detection device 30 is suitable for flaw detection of longer shafts, rods or pipes, and can magnetize the workpiece in the circumferential, longitudinal and composite directions.

[0056] As shown in Figure 8 , the second flaw detection device 40 includes a second rack 41, a second drive motor 42, a second drive shaft 43 and a third magnetizing mechanism 44, the second drive motor 42 is arranged on one side of the second rack 41 and is in transmission connection with the second drive shaft 43, and the third magnetizing mechanism 44 is symmetrically arranged on both sides of the second rack 41 and is in transmission connection with the second drive shaft 43.

[0057] The overall structure and working principle of the second flaw detection device 40 are similar to those of the first flaw detection device 30, which will not be described here, except that the spacing of the two third magnetizing mechanisms 44 is smaller, which can be suitable for flaw detection of shorter shafts, rods or pipes.

[0058] As shown in Figure 9 , the third flaw detection device 50 includes a rectangular frame 51, a turntable 52, a rotary motor 53 and a fourth magnetizing coil 54, the rectangular frame 51 is movably arranged on the second rack 41, the turntable 52 is arranged on the inner bottom of the rectangular frame 51, the rotary motor 53 is in transmission connection with the turntable 52, and the fourth magnetizing coil 54 is arranged around the four side walls of the rectangular frame 51.

[0059] One side of the rectangular frame 51 is provided with a second transverse moving cylinder 55, the cylinder body of the second transverse moving cylinder 55 is fixedly arranged on the second rack 41, the piston rod end is in transmission connection with the rectangular frame 51, and the rectangular frame 51 is slidably connected with the second rack 41 through a slide rail assembly.

[0060] The bottom of the turntable 52 is provided with a support plate 56, and a plurality of support rollers 57 are uniformly arranged in a circumferential manner between the turntable 52 and the support plate 56.

[0061] The third flaw detection device 50 can be driven as a whole to reciprocate on the second rack 41 by the second transverse moving cylinder 55, the workpiece on the rotating disc 52 is rotated by the rotating motor 53, and the workpiece is magnetized and detected by the three-dimensional rotating magnetic field by the plurality of fourth magnetizing coils 54 arranged around the rectangular frame 51, the plurality of fourth magnetizing coils 54 can be energized from the circumferential direction (X), the longitudinal direction (Y) and the longitudinal direction (Z) respectively, a three-dimensional space rotating magnetic field with a phase angle of 120° is generated, and the magnetization of the special-shaped workpiece is realized.

[0062] In summary, the utility model discloses a plurality of flaw detection devices can be realized circumferential, longitudinal and composite magnetization of workpiece, can be used for medium and large and small pin shaft, rod, pipe parts magnetic particle inspection, also can be used for various special-shaped workpiece magnetic particle inspection, and further improve the functionality and practicality of equipment, after magnetic particle inspection, workpiece can be demagnetized by direct current demagnetization method, alternating current demagnetization method and other methods to eliminate the residual magnetism in the workpiece, prevent its adverse effects on subsequent use or test.

[0063] The above only is the preferred embodiment of the utility model, and does not limit the utility model, any modification, equivalent replacement, improvement etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on that ordinary skilled in the art can realize;When the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, also not in the protection scope required by the utility model.

Claims

1. A multi-functional magnetic particle flaw detector characterized by: The utility model provides a kind of magnetic particle testing device, including main body frame, darkroom and be set inside the first flaw detection device, second flaw detection device, third flaw detection device and magnetic powder spray device of the darkroom, the first flaw detection device and second flaw detection device are side by side and interval arrangement, the third flaw detection device is arranged in second flaw detection device side in same row, the magnetic powder spray device is arranged between first flaw detection device and second flaw detection device, the main body frame both sides are equipped with guide rail, the guide rail on both sides is equipped with beam sliding, the beam is equipped with sling on, and the utility model discloses a kind of magnetic particle testing device, including main body frame, darkroom and be set inside the first flaw detection device, second flaw detection device, third flaw detection device and magnetic powder spray device, the first flaw detection device and second flaw detection device are side by side and interval arrangement, the third flaw detection device is arranged in second flaw detection device side in same row, the magnetic powder spray device is arranged between first flaw detection device and second flaw detection device, the main body frame both sides are equipped with guide rail, the guide rail on both sides is equipped with beam sliding, the beam is equipped with sling on, The first flaw detection device includes first rack, first drive motor, first drive shaft, first magnetizing mechanism and second magnetizing mechanism, the first drive motor is arranged at one side of first rack and is drivingly connected with the first drive shaft, the first magnetizing mechanism is symmetrically arranged at both sides of first rack and is drivingly connected with the first drive shaft, and a plurality of second magnetizing mechanisms are arranged between the first magnetizing mechanisms at both sides in interval. The second flaw detection device includes second rack, second drive motor, second drive shaft and third magnetizing mechanism, the second drive motor is arranged at one side of second rack and is drivingly connected with the second drive shaft, and the third magnetizing mechanism is symmetrically arranged at both sides of second rack and is drivingly connected with the second drive shaft. The third flaw detection device includes rectangular frame, turntable, rotary motor and fourth magnetizing coil, the rectangular frame is movably arranged on the second rack, the turntable is arranged at the inner bottom of the rectangular frame, the rotary motor is drivingly connected with the turntable, and the fourth magnetizing coil is arranged around the four side walls of the rectangular frame.

2. The multi-functional magnetic particle testing machine according to claim 1, wherein: The first magnetizing mechanism includes positioning shaft, positioning seat, first cylinder and first transmission assembly, the positioning shaft is rotatably arranged on the first rack through a rotating support, the positioning seat is arranged at the front end of the positioning shaft, the first cylinder is arranged at the rear end of the positioning shaft, and the positioning shaft is drivingly connected with the first drive shaft through the first transmission assembly.

3. The multi-functional magnetic particle testing machine according to claim 2, wherein: The first transmission assembly includes first transmission shaft and second transmission shaft, and the first drive shaft, the first transmission shaft, the second transmission shaft and the positioning shaft are drivingly connected through sprocket and chain.

4. The multi-functional magnetic particle testing machine according to claim 3, wherein: The first magnetizing mechanism further includes first horizontal moving cylinder, first vertical moving cylinder and first magnetizing coil, the first horizontal moving cylinder is arranged on the side wall above the first rack and is connected with a sliding plate, the sliding plate is slidingly connected with the top of the first rack through a sliding rail assembly, the first vertical moving cylinder is arranged at the front end of the sliding plate, and the first magnetizing coil is arranged at the lower end of the first vertical moving cylinder.

5. The multi-functional magnetic particle testing machine according to claim 1, wherein: The second magnetizing mechanism includes second cylinder, rack gear, gear and semicircular magnetizing coil, the second cylinder is longitudinally arranged on the first rack and is drivingly connected with the rack gear, the gears are meshingly arranged at both sides of the rack gear, and each gear side is coaxially provided with a semicircular magnetizing coil.

6. The multi-functional magnetic particle testing machine according to claim 5, wherein: The end of one of the semicircular magnetizing coils is provided with a positioning slot, a third cylinder is arranged on the outer wall of the positioning slot, a locking block is arranged in the positioning slot, the piston rod of the third cylinder penetrates into the positioning slot and is connected with the locking block, and the end of the other semicircular magnetizing coil is provided with a plug connector.

7. The multi-functional magnetic particle testing machine according to claim 1, wherein: The rectangular frame is provided with a second horizontal moving air cylinder, the cylinder body of the second horizontal moving air cylinder is fixedly arranged on the second rack, and the piston rod end is in transmission connection with the rectangular frame.

8. The multi-functional magnetic particle testing machine according to claim 7, wherein: The bottom of the rotating disc is provided with a supporting plate, and a plurality of supporting rollers are uniformly arranged between the rotating disc and the supporting plate in a circumferential manner.

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