CN219162051U

CN219162051U - Magnetic powder inspection probe

Info

Publication number: CN219162051U
Application number: CN202223529723.XU
Authority: CN
Inventors: 余薇; 杨钢; 杨勇
Original assignee: Nanjing Huazhong Testing Co ltd
Current assignee: Nanjing Huazhong Testing Co ltd
Priority date: 2022-12-28
Filing date: 2022-12-28
Publication date: 2023-06-09
Anticipated expiration: 2032-12-28

Abstract

The utility model discloses a magnetic powder inspection probe which comprises a mounting plate, a handle hinged on the mounting plate and a magnetic yoke for carrying out magnetization detection on metal, wherein the angle of the handle relative to the mounting plate along the hinged position is adjustable, an extension mechanism for extending the magnetic yoke is further arranged on the mounting plate, and one end of the extension mechanism is arranged on the mounting plate and connected with the magnetic yoke. The advantage, through the rotatable handle angle of adjustment, come angle between adjustment handle and the yoke, and then solve the problem that the narrow and small probe of detecting a flaw in space can not put into in the direction of height to utilize telescopic extending mechanism to control the length of different yokes, directly stretch into the detection to the less yoke of size, solved the magnetic powder probe of detecting a flaw and put into at narrow and small space probe of detecting a flaw, be not suitable for the problem on detecting complicated work piece surface, it is more convenient to use.

Description

Magnetic powder inspection probe

Technical Field

The utility model particularly relates to a magnetic powder flaw detection probe.

Background

The defects such as cracks, slag inclusion, hairlines and the like can be generated in the use and manufacturing processes of the steel product, the service life of the product can be reduced, even serious accidents can be generated due to the defect problem, so that the steel product is required to be checked before being put into use, if the defects are not generated, the surface of metal can be found by naked eyes, if the defects are generated, the inside of the steel product is difficult to find, therefore, the magnetic powder inspection in nondestructive inspection is required, the magnetic powder inspection is realized by utilizing the interaction between the magnetic leakage field and the magnetic powder at the defect position of the workpiece, the difference between the magnetic permeability and the magnetic permeability at the defect position of the near surface of the steel product is utilized, the magnetic field at the discontinuous position of the materials is distorted after the magnetic is magnetized, and the magnetic leakage field is generated at the part of the magnetic flux leakage position of the workpiece, so that the magnetic powder is attracted to form magnetic powder accumulation-magnetic marks, the magnetic powder defect position is revealed under proper illumination conditions, and the magnetic powder accumulation is observed and explained, and the magnetic powder inspection is realized; however, the existing magnetic powder probe can only be replaced by other specially-made probes with smaller sizes when being used in a narrow space, and the replacement is troublesome each time.

In chinese patent: 201920809519.2, the utility model name is: the utility model provides a portable magnetic particle inspection machine, is recorded including the defectoscope main part and set up the probe subassembly in defectoscope main part lower extreme both sides in, the probe subassembly is including metal design hose and metal yoke, the defectoscope main part is connected to metal design hose's one end, and the other end is used for demountable installation metal yoke, metal yoke is including being equipped with the barrel of hole and a plurality of probes of scalable setting in the barrel.

As shown in fig. 1 of patent 201920809519.2, this scheme mainly utilizes metal design hose to connect metal yoke, can realize the free rotation of metal yoke in the horizontal direction, but still can not change in the length direction, can appear not putting into when meetting narrow and small space to handheld handle is fixed position, and the angle is unchangeable, also can appear detecting a flaw the probe and put into phenomenon when meeting the narrow and small position in space in the direction of height, inconvenient use.

Disclosure of Invention

The utility model aims to solve the technical problems that the existing magnetic particle inspection probe mentioned in the technical background cannot be placed in a flaw detection probe in a narrow space, is not suitable for detecting the surface of a complex workpiece and is inconvenient to use.

Aiming at the technical problems, a magnetic particle inspection probe is provided; the method is realized by the following technical scheme: the utility model provides a magnetic particle inspection probe, includes the mounting panel, articulates the handle on the mounting panel and carries out the magnetic yoke that magnetization was surveyed to the metal, the handle is along articulated department for mounting panel angularly adjustable, still is provided with the extending mechanism that extends the magnetic yoke on the mounting panel, and extending mechanism one end sets up one end and is connected with the magnetic yoke on the mounting panel.

According to the utility model, the angle between the handle and the magnetic yoke is adjusted by adjusting the angle of the rotatable handle, so that the problem that a flaw detection probe with a small space cannot be placed in the height direction is solved, the length of different magnetic yokes is controlled by utilizing the telescopic extension mechanism, the magnetic yokes with smaller sizes are directly stretched into detection, the problem that the flaw detection probe with the small size cannot be placed in the small space, and the problem that the flaw detection probe with the small size is not suitable for detecting the surface of a complex workpiece is solved, and the use is more convenient.

The utility model is preferable to the technical scheme, the extension mechanism consists of a plurality of extension sleeves sleeved together, the extension and fixation of the extension mechanism are controlled between every two adjacent extension sleeves through the fixing pin and the reed, and the fixing pin and the reed are arranged to ensure that the plurality of extension sleeves can be stably and permanently connected together, are not easy to damage and have a more stable structure.

In the technical scheme of the utility model, the plurality of extension sleeves are finally accommodated in the extension sleeve fixed on the mounting plate, and the size of the magnetic powder flaw detection probe can be reduced as much as possible after the extension sleeve is contracted, so that the magnetic powder flaw detection probe is more convenient to use.

The magnetic yoke comprises a magnetic pole probe and a plurality of ferromagnetic connecting blocks, wherein the magnetic pole probe is hinged with the ferromagnetic connecting blocks which are hinged together in pairs, the magnetic pole probe is arranged at the tail end, and the magnetic pole probe is arranged at the tail end, so that the magnetic pole probe is convenient to clamp through the magnetic pole probe or is stuck on a metal piece to be tested, and the magnetic yoke is more convenient to use.

According to the technical scheme, the magnetic pole probe and the hinged parts of the ferromagnetic connecting blocks are fixed by the butterfly nuts which are easy to loosen, and the butterfly nuts are arranged to enable the shape of the magnetic yoke to be adjusted according to the needs by loosening and tightening the butterfly nuts, so that the magnetic pole probe is more suitable for detecting the surface of a complex workpiece.

The utility model has the advantages that the multiple extending mechanisms are uniformly arranged on the mounting plate, the number of the extending mechanisms corresponds to that of the magnetic yokes, and the corresponding arrangement of the number of the extending mechanisms and the number of the magnetic yokes is used for ensuring that each magnetic yoke can be lengthened and contracted, so that the device is more convenient to use and is also suitable for detecting the surface of a complex workpiece.

According to the technical scheme, the handle is hinged with the mounting plate through the hinging table arranged on the mounting plate, the handle is rotated and fixed along the hinging position through the hinging shaft and the limiting pin, the magnetic field switch and the lighting switch are arranged at the handshaking position of the handle, the handle is rotated and fixed along the hinging position, the angle between the handle and the magnetic yoke can be adjusted by adjusting the angle of the rotatable handle, and the problem that a flaw detection probe with a small space cannot be placed in the height direction is solved.

According to the technical scheme, the illuminating lamp is hinged to the mounting plate, the illuminating lamp can rotate along the hinged position, the illuminating lamp is arranged to facilitate the inspection of defects on the metal piece, and the use is more convenient.

Compared with the prior art, the utility model has the following beneficial effects:

according to the technical scheme, the angle between the handle and the magnetic yoke is adjusted by adjusting the angle of the rotatable handle, so that the problem that a flaw detection probe with a small space cannot be placed in the height direction is solved, the length of different magnetic yokes is controlled by utilizing the telescopic extension mechanism, the magnetic yokes with smaller sizes are directly stretched into detection, the problem that the flaw detection probe with the small size cannot be placed in the small space and is not suitable for detecting the surface of a complex workpiece is solved, and the magnetic powder flaw detection probe is more convenient to use.

Drawings

Fig. 1 is a schematic perspective view of the present utility model.

Fig. 2 is a perspective view of the extension mechanism and the yoke.

FIG. 3 is a cut-away view of the articulating table after installation of the handle.

FIG. 4 is a schematic view of the present utility model after the angle adjustment.

Detailed Description

The following describes the technical solution in the embodiment of the present utility model in detail with reference to fig. 1 to 4 in the embodiment of the present utility model.

Example 1

As shown in fig. 1, a magnetic particle inspection probe comprises a mounting plate 1, a handle 2, an extension mechanism 3 and a magnetic yoke 4.

As shown in fig. 1 and 3, the mounting plate 1 is a rectangular metal plate, a rectangular surface on the front surface of the mounting plate 1 is welded with a hinging table 11 perpendicular to the rectangular surface in the middle, the cross section of the hinging table 11 is rectangular, a round hinging hole penetrating through the hinging table 11 is formed in the side surface of the hinging table 11 perpendicular to the side surface of the hinging table 11, one end of the hinging hole is perpendicular to the radial direction of the inner wall of the hinging hole, a limiting table is arranged in the inward extending direction by 2mm, the thickness of the limiting table is 2mm, the inner diameter of the end of the hinging hole is reduced by 4mm, 8 round slots are uniformly formed in the periphery of the hinging hole at the end perpendicular to the side surface of the hinging table 11, the diameter of each round slot is 2mm, the depth is 5mm, and the limiting pin 23 can be inserted into the round slots.

A hinge shaft 22 is inserted into a hinge hole in the hinge table 11, the hinge shaft 22 is a circular metal rod, the diameter of the hinge shaft 22 is equal to the diameter of one end of the smaller diameter of the hinge hole, the hinge shaft 22 penetrates through the hinge table 11, 10mm of the two ends of the hinge shaft extend out of the hinge table 11, a circle of boss with the thickness of 2mm is welded on the hinge shaft 22 near three-fourths of the hinge shaft 22 at one end of the smaller diameter of the hinge hole, and the diameter of the welded boss is equal to the inner diameter of the hinge hole.

The hinge shaft 22 is sleeved with a spring, one end of the spring is placed on a boss on the hinge shaft 22, the other end of the spring is propped against a limiting table at the end opening of the hinge hole, a round mounting plate 13 is fixed on the end of the hinge shaft 22 for mounting the spring by a screw, a plurality of limiting pins 23 are welded on the mounting plate 13 perpendicular to the surface of the mounting plate 13, and the limiting pins 23 are inserted into round slots on the hinge table 11.

The handle 2 is a C-shaped metal grip, two side arms of the handle are provided with circular through holes, the handle 2 and the hinge table 11 are hinged together by the circular through holes and the hinge shaft 22, in order to conveniently control the angle between the handle 2 and the hinge table 11, 8 circular slots for inserting the limiting pin 23 are also formed in the positions, corresponding to the circular slots for inserting the limiting pin 23, of the side wall of the handle 2 and the hinge table 11, the limiting pin 23 can penetrate through the side arms of the handle 2 and is inserted into the circular slots in the hinge table 11, and then the handle 2 is fixed on the mounting plate 1.

For the convenience of gripping, a groove for facilitating gripping is formed in the cross arm of the handle 2, and a magnetic field switch 24 and a lighting switch 25 are also arranged on the cross arm.

With respect to the assembly and angular adjustment between the handle 2 and the mounting plate 1: when in assembly, the handle 2 is firstly placed on the hinge table 11 on the mounting plate 1, the hinge holes are aligned, then a spring is sleeved on the hinge shaft 22, the hinge shaft 22 sleeved with the spring is inserted into the hinge holes, the handle 2 is hinged on the hinge table 11, then the mounting plate 13 with the limiting pin 32 is fixed on the hinge shaft 22 by using a screw, after the fixing, the limiting pin 32 can penetrate through the side arm of the handle 2, and is inserted into the circular slotted hole on the hinge table 11, thus the assembly between the handle 2 and the mounting plate 1 is completed; when the angle between the handle 2 and the mounting plate 1 needs to be adjusted, firstly, the hinge shaft 22 protruding from the side arm of the handle 2 is pressed inwards, at this time, the hinge shaft 22 moves inwards, the spring is compressed under the action of standing, the limiting pin 32 moves out of the circular groove hole on the hinge table 11, at this time, the handle 2 can rotate along the hinge table 11, at this time, when the handle 2 rotates to a proper angle, the pressed hinge shaft 22 is loosened, at this time, under the action of spring force, the hinge shaft 22 is reset, and then the limiting pin 32 is driven to be clamped in the circular groove hole again, so that the re-fixing of the handle 2 is completed.

As shown in fig. 2 and 4, the extension mechanism 3 is composed of a plurality of extension sleeves 31 sleeved together, the diameters of the extension sleeves 31 are sequentially reduced, and every two adjacent extension sleeves 31 are fixed by a fixing pin 32 and a reed.

The outermost extension sleeve 31 is vertically welded on the back of the mounting plate 1, 4 extension sleeves are uniformly welded on the back of the mounting plate 1, a circular limiting hole 34 penetrating through a single side wall of the extension sleeve 31 is formed at the position, which is 10mm close to the port, of the lower end of the outermost extension sleeve 31 welded on the mounting plate 1, and circular limiting holes 34 are formed at two ends of the rest extension sleeves 31.

In order to avoid the rotation of the plurality of extension sleeves 31 along the axial direction, the cross section of the extension sleeve 31 is D-shaped, and the circular limiting hole 34 is formed at a position on the cross section of the extension sleeve 31, which is a straight line.

The fixing pin 32 is a pin with one end being hemispherical and half being cylindrical, the fixing pin 32 can pass through the limiting hole 34, one end of the cylinder of the fixing pin 32 is fixed on the reed, the reed is a metal sheet with elasticity, one end of the reed is welded on the inner wall of the port of the extension sleeve 31, and the extension sleeve 31 welded on the mounting plate 1 is not required to be mounted, and the rest of the extension sleeve 31 is required to be provided with a combination of the reed and the locating pin 32.

With respect to the mounting and use shrinkage of the extension mechanism 3, the fixing pin 32 is first pressed inward at the time of mounting, the fixing pin 32 is flush with the surface of the extension sleeve 31 at this time, and then the extension sleeve 31 is inserted into another corresponding extension sleeve 31, and all the extension sleeves 31 are assembled in this way in sequence; when the extension sleeve 31 is pulled outwards in use, the fixing pin 32 and the fixing pin 32 are in a flush state when the extension sleeve 31 is pulled out, the reed is extruded at the moment, when the extension sleeve 31 slides to the limit hole 34, the fixing pin 32 can pop up under the action of the reed, the fixing pin is blocked in the limit hole 34 to keep sliding downwards, the extension of the extension mechanism 3 is completed, the fixing pin 32 is pressed inwards when the extension sleeve is required to be retracted, at the moment, the fixing pin 32 is flush with the surface of the extension sleeve 31, and then the extension sleeve 31 is pushed back inwards.

As shown in fig. 2 and 4, the magnetic yoke 4 is a metal probe head composed of a magnetic pole probe 42 and a plurality of ferromagnetic connection blocks 41, the ferromagnetic connection blocks 41 are hinged together in pairs, the ferromagnetic connection blocks 41 are rectangular, the magnetic pole probe 42 has a certain angle, one end of the ferromagnetic connection blocks 41 is hinged with the magnetic pole probe 42 after the ferromagnetic connection blocks 41 are hinged, one end of the ferromagnetic connection blocks is welded on the extension sleeve 31, and in order to facilitate the adjustment of the angle of the magnetic yoke 4, the hinged positions between the ferromagnetic connection blocks 41 and the magnetic pole probe 42 are all fixed by a butterfly nut which is easy to be loosened.

The power cord for driving the yoke 4 is spirally arranged in the extension sleeve 31 and finally connected with the yoke.

In addition, in order to facilitate checking of magnetization effect and checking of defects, an illuminating lamp 12 is hinged to the back surface of the mounting plate 1, and the illuminating lamp 12 can be manually adjusted in angle so as to facilitate illuminating of a designated position.

The use process of the embodiment is as follows: when the device is used, firstly, magnetic suspension is sprayed on the surface of steel to be detected, then the magnetic field switch 24 is turned on, the magnetization detection piece is started, then the illuminating lamp 12 is turned on, whether defects exist or not is checked, and when the condition that a flaw detection probe with a narrow space in the height direction cannot be put in exists, the height of the flaw detection probe can be reduced by adjusting the angle between the handle 2 and the magnetic yoke, so that the flaw detection probe is put in for detection; when the space is small and long, the length of different magnetic yokes is prolonged by the telescopic extension mechanism, the magnetic yokes with smaller size are directly extended into detection, meanwhile, the magnetic yokes 4 on two sides can be adjusted to be different in length for detection on uneven surfaces, and the device is convenient to use and is suitable for more complex detection surfaces.

The above embodiments are only for illustrating the technical idea of the present utility model, and the protection scope of the present utility model is not limited thereto, and any modification made on the basis of the technical scheme according to the technical idea of the present utility model falls within the protection scope of the present utility model.

Claims

1. The utility model provides a magnetic particle inspection probe which characterized in that: including mounting panel (1), articulated handle (2) and yoke (4) that magnetization detected the metal on mounting panel (1), handle (2) are along articulated department for mounting panel (1) angularly adjustable, still are provided with on mounting panel (1) to extend mechanism (3) that yoke (4) extended, and extend mechanism (3) one end setting is connected with yoke (4) on mounting panel (1).

2. A magnetic particle inspection probe according to claim 1, wherein: the extension mechanism (3) consists of a plurality of extension sleeves (31) sleeved together, and the extension and fixation of the extension mechanism (3) are controlled by a fixed pin (32) and a reed between every two adjacent extension sleeves (31).

3. A magnetic particle inspection probe according to claim 2, wherein: a plurality of extension sleeves (31) are finally accommodated in that extension sleeve (31) which is fixed to the mounting plate (1).

4. A magnetic particle inspection probe according to claim 1, wherein: the magnetic yoke (4) comprises a magnetic pole probe (42) and a plurality of ferromagnetic connecting blocks (41), wherein the magnetic pole probe (42) is hinged with the ferromagnetic connecting blocks (41) which are hinged together in pairs, and the magnetic pole probe (42) is positioned at the tail end.

5. A magnetic particle inspection probe according to claim 4, wherein: the hinged parts of the magnetic pole probe (42) and the ferromagnetic connecting blocks (41) are fixed by butterfly nuts which are easy to tighten and loosen.

6. A magnetic particle inspection probe according to claim 1, wherein: the extension mechanisms (3) are arranged in a plurality, are uniformly arranged on the mounting plate (1), and the number of the extension mechanisms (3) corresponds to the number of the magnetic yokes (4).

7. A magnetic particle inspection probe according to claim 1, wherein: the handle (2) is hinged with the mounting plate (1) through a hinge table (11) arranged on the mounting plate (1), the handle (2) is rotated and fixed along the hinge position through a hinge shaft (22) and a limiting pin (23), and a magnetic field switch (24) and a lighting switch (25) are arranged at the handshake position of the handle.

8. A magnetic particle inspection probe according to claim 1, wherein: the mounting plate (1) is also hinged with a lighting lamp (12), and the lighting lamp (12) can rotate along the hinged position.