CN203275364U - Portable bolt magnetic powder flaw detector - Google Patents
Portable bolt magnetic powder flaw detector Download PDFInfo
- Publication number
- CN203275364U CN203275364U CN 201320298814 CN201320298814U CN203275364U CN 203275364 U CN203275364 U CN 203275364U CN 201320298814 CN201320298814 CN 201320298814 CN 201320298814 U CN201320298814 U CN 201320298814U CN 203275364 U CN203275364 U CN 203275364U
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- Prior art keywords
- magnetic conductor
- coil
- flaw detector
- straight
- powder flaw
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- Withdrawn - After Issue
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Abstract
The utility model discloses a portable bolt magnetic powder flaw detector, relating to bolt detection equipment and being used for solving the problems that the existing equipment is inconvenient to detect the flaw of a bolt under the condition of no alternating current. The portable bolt magnetic powder flaw detector comprises a power supply box and a probe, wherein a storage battery, a control circuit and a charging circuit are arranged in the power supply box; the probe consists of a bent magnet, a straight magnet and a coil, the bent magnet and the straight magnet are formed by laminating and fixing silicon steel sheets and form an F-shaped structure together, the coil is sheathed outside the bent magnet, two ends of the coil are electrically connected with a conductor, and the other end of the conductor is electrically connected with a plug. Through the bent magnet and the straight magnet which form the F-shaped structure, and the coil sheathed on the bent magnet, the problem that the existing equipment is inconvenient to detect the flaw of the bolt under the condition of no alternating current can be effectively solved.
Description
Technical field
The utility model relates to a kind of bolt checkout equipment, specifically a kind of magnet powder flaw detector for detection of crack in bolt.
Background technology
Magnetic powder inspection refers to the workpiece that the magnetic materials such as iron and steel are made is magnetized, the feature of utilizing the leakage field of its rejected region can adsorb magnetic, and distributing according to magnetic shows the method for detection that is detected object surface defective and near surface flaw.
Present general magnetic powder inspection instrument probe can not for detection of the crack in bolt defective, be specifically designed to the magnet powder flaw detector that detects crack in bolt, particularly in the situation that do not have alternating current still rare to the magnet powder flaw detector that crack in bolt detects.
The utility model content
The purpose of this utility model is to provide a kind of Portable screw bolt magnet powder flaw detector, curved magnetic conductor by F shape structure and straight magnetic conductor and be enclosed within coil on curved magnetic conductor are used for solving existing equipment in the situation that the problem of inconvenience when not having alternating current to carry out crack detection to bolt.
The technical scheme in the invention for solving the technical problem is: a kind of Portable screw bolt magnet powder flaw detector, comprise power supply box and probe,
Be provided with accumulator, control circuit and charging circuit in described power supply box, described accumulator is the 12V direct supply, is provided with the adjusting knob that magnetizes, the adjusting knob that demagnetizes, the reometer that magnetizes, demagnetization current table, start button on the power supply box panel, fills demagnetization selector switch, power switch and socket;
Wherein charge circuit provides to coil the electric current that magnetizes, and demagnetization circuit provides demagnetization current to coil.
Adjusting knob, reometer are used for controlling and indication is magnetized and demagnetizes, and is furnished with simultaneously power switch and socket.
Described probe comprises curved magnetic conductor, straight magnetic conductor and coil, described curved magnetic conductor, straight magnetic conductor are all to be fixed by silicon steel sheet stack to form, and be provided with in both sides and strengthen iron plate, curved magnetic conductor is that the right angle turns chi shape, comprise vertical part and lateral part, two parts form rectangular-shaped, be fixed with U-shaped card on the straight magnetic conductor of yi word pattern, described U-shaped card forms a square sleeve with straight magnetic conductor, square sleeve is nested with on vertical part, make curved magnetic conductor and straight magnetic conductor form a F shape structure, wherein form the placement space of bolt to be detected between two transverse magnets; Have a circular hole in the outside of U-shaped card, circular hole is fixed with spring base outward, described spring base is uncovered columnar structured of end sealing one end, and is fixed with Compress Spring on spring base, and the existence of spring can be so that curved magnetic conductor and straight magnetic conductor fit tightly; Be fixed with the insulated coil support on the top of U-shaped card, have the rectangular opening of the vertical part of the curved magnetic conductor of energy kink in the middle part of coil brace, and be wound with coil on the outside surface of coil brace, the two ends of coil are electrically connected to wire, and the other end of wire is electrically connected with plug.
The both sides of described straight magnetic conductor are fixed with supporting leg.
The beneficial effects of the utility model are: the curved magnetic conductor by F shape structure and straight magnetic conductor and be enclosed within coil on curved magnetic conductor efficiently solve existing equipment in the situation that the problem of inconvenience when not having alternating current to carry out crack detection to bolt.
Description of drawings
Fig. 1 is 3 d effect graph of the present utility model;
In figure: 1 curved magnetic conductor, 2 iron plates, 3 power supply boxs, 31 adjusting knobs that magnetize, 32 demagnetization adjusting knobs, 33 reometers that magnetize, 34 demagnetization current tables, 35 fill the demagnetization selector switch, 36 power switches, 37 sockets, 38 start buttons, 4 bolts to be measured, 5 supporting legs, 6 straight magnetic conductors, 61 rivets, 7 trip bolts, 8 spring bases, 9U type card, 10 coils, 11 coil braces, 12 wires.
Embodiment
As shown in Figure 1, the utility model is comprised of power supply box 3 and probe two parts, uses wire 12 to be electrically connected between two parts, and 12V accumulator, control circuit and three ingredients of charging circuit are housed in power supply box 3,12V accumulator and charging circuit are all known technologies, repeat no more; Control circuit is comprised of charge circuit and demagnetization circuit two parts, change with the demagnetization selector switch 35 of filling that is arranged on power supply box 3 panels, both all be subjected to the control of power switch 36, charge circuit is that direct current magnetizes, when pressing start button 38 at every turn, timing circuit will provide the electric current approximately 0.5 second of 100 amperes to coil 10, workpiece is magnetized.Demagnetization circuit is also direct current demagnetization, when power switch 36 is in the open site, fills demagnetization selector switch 35 and be in demagnetization during the position, press start button 38 at every turn, timing circuit and commutating circuit work, provide progressively commutation (both positive and negative polarity the changes repeatedly) electric current of decay to coil 10, workpiece is demagnetized.The adjusting knob 31 that magnetizes can be regulated the size of the electric current that magnetizes, and the reometer 33 that magnetizes is used to refer to the current value that magnetizes, the length that demagnetization adjusting knob 32 can be regulated the demagnetization time, and demagnetization current table 34 is used to refer to the demagnetization current value.
Described probe comprises curved magnetic conductor 1, straight magnetic conductor 6 and coil 10, and described curved magnetic conductor 1 and straight magnetic conductor 6 form by the siliconized plate stack and be fixing by rivet 61, and rivet 61 uses sunk head rivet to keep the smooth of two side planes.For improving intensity, be fixed with iron plate 2 in the both sides of curved magnetic conductor 1 and straight magnetic conductor 6 by rivet 61.For making magnetic conduction good, the minimizing magnetic resistance all will polish two medial surfaces of curved magnetic conductor 1, the top and left side of straight magnetic conductor 6, to reach the purpose that contact is good, reduce magnetic resistance, increase magnetic flux.The right angle turns curved magnetic conductor 1 vertical portion of chi shape and is placed in U-shaped card 9, described U-shaped card 9 is formed by the bending of strip iron plate, have a through hole in the side of U-shaped card 9, be fixed with a nut in the outside of through hole, an end coordinates and withstands on the side of curved magnetic conductor 1 with the screw rod of knob with nut; Be fixed with straight magnetic conductor 6 by rivet 61 on the two end plates of U-shaped card 9 one sides, curved magnetic conductor 1 and straight magnetic conductor 6 form a F shape structure; For increasing supporting surface, preventing from toppling, be fixed with four supporting legs 5 in the both sides of straight magnetic conductor 6 by rivet 61, described supporting leg 5 is formed by 90 ° of strip iron plate bendings; Opposite side at U-shaped card 9 has a circular hole, is fixed with a spring base 8 in the outside of circular hole, and described spring base 8 is the steel cylindrical drum of the uncovered end sealing of an end, is fixed with a spring in spring base 8.Be fixed with coil brace 11 on the top of U-shaped card 9, described coil brace 11 is that right cylinder, both sides are phenoplast parts of plectane for centre, and has through hole at coil brace 11 middle parts, described through hole be can the curved magnetic conductor 1 of kink vertical partly rectangular opening; Outside in the mediate cylindrical of coil brace 11 is wound with coil 10, and described coil 10 is coiled into for thick enamel insulated round copper wire, and the two ends of coil 10 are electrically connected to wire 12, and the other end of wire 12 is electrically connected with plug.
During use, probe can be placed on the limit of worktable or desk, plug is inserted on the respective socket 37 in the power supply box 3 panel lower left corners, unclamp the knob on trip bolt 7, curved magnetic conductor 1 just can move up and down, and bolt 4 to be measured is put between the lateral part and straight magnetic conductor 6 of curved magnetic conductor 1, turn on the power switch 36, to fill demagnetization selector switch 35 and get to " magnetizing " position, press start button 38, just can magnetize to bolt 4 to be measured.Magnetize complete after, can be on the bolt 4 to be measured some MPI fluorescent magnetic particles of spray, if bolt to be measured 4 has crackle or defective, by using the fluorescent lamp magnetic, be easy to detect according to the distribution of magnetic.
If after testing, find bolt 4 defectiveness to be measured, should carry out specification handles by standard; If zero defect should be cleaned out the magnetic of spray on bolt 4 to be measured, then the processing of demagnetizing.The demagnetization process is: bolt 4 to be measured is placed between curved magnetic conductor 1 and straight magnetic conductor 6, turns on the power switch 36, will fill demagnetization selector switch 35 and be placed in " demagnetization " position, press start button 38, equipment will demagnetize to bolt 4 to be measured automatically; When bolt 4 to be measured is carried out batch detection, if bolt length is identical, just bolt 4 to be measured can be loaded onto or taken off as long as swing curved magnetic conductor 1; If bolt length is different, necessary turn knob is regulated the distance between curved magnetic conductor 1 lateral part and straight magnetic conductor 6.
The length of curved magnetic conductor 1 vertical part determines the maximum length of the bolt to be measured 4 that can measure, and the thickness of coil brace 11 has determined the minimum length of the bolt to be measured 4 that can measure.As long as these two parameters of appropriate design just can detect the bolt to be measured 4 of random length.
Claims (6)
1. a Portable screw bolt magnet powder flaw detector, comprise power supply box and probe, is electrically connected to by wire between the two, it is characterized in that, described probe comprises curved magnetic conductor, straight magnetic conductor and coil;
Described curved magnetic conductor, straight magnetic conductor are all to be fixed by silicon steel sheet stack to form; Curved magnetic conductor comprises vertical part and lateral part,
Described straight magnetic conductor is in-line, fix a U-shaped card and square sleeve of between formation at an end of described straight magnetic conductor, described square sleeve is nested with and makes two magnets form F shape on the vertical part of curved magnetic conductor, be provided with trip bolt between square sleeve and vertical portion are divided, the upper surface of the lower surface of described lateral part and straight magnetic conductor is parallel to each other and be all the plane; Between dividing, described U-shaped card and described vertical portion be provided with the elastic body that straight magnetic conductor and curved magnetic conductor is carried out pre-close contact;
Described coil is moving up and down to be nested with on the vertical part of curved magnetic conductor;
Described power supply box inside is provided with accumulator, and
To described coil provide the electric current that magnetizes charge circuit, the demagnetization circuit of demagnetization current is provided,
Control and indicate and magnetize and the adjusting button, reometer and the power switch that demagnetize.
2. a kind of Portable screw bolt magnet powder flaw detector according to claim 1, is characterized in that, described elastic body is a Compress Spring, is provided with a spring base that is used for holding spring in described U-shaped card, and the other end of spring is resisted against on vertical part.
3. a kind of Portable screw bolt magnet powder flaw detector according to claim 2, is characterized in that, the both sides of described curved magnetic conductor and straight magnetic conductor are respectively equipped with strengthens iron plate.
4. a kind of Portable screw bolt magnet powder flaw detector according to claim 3, is characterized in that, the both sides of described straight magnetic conductor are fixed with supporting leg.
5. a kind of Portable screw bolt magnet powder flaw detector according to claim 1, is characterized in that, described accumulator is the 12V direct supply.
6. a kind of Portable screw bolt magnet powder flaw detector according to claim 1, is characterized in that, also is provided with a coil brace that is used for installing coil between described coil and vertical portion are divided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320298814 CN203275364U (en) | 2013-05-28 | 2013-05-28 | Portable bolt magnetic powder flaw detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320298814 CN203275364U (en) | 2013-05-28 | 2013-05-28 | Portable bolt magnetic powder flaw detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203275364U true CN203275364U (en) | 2013-11-06 |
Family
ID=49505743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320298814 Withdrawn - After Issue CN203275364U (en) | 2013-05-28 | 2013-05-28 | Portable bolt magnetic powder flaw detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203275364U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103245723A (en) * | 2013-05-28 | 2013-08-14 | 山东省特种设备检验研究院聊城分院 | Portable blot magnetic flaw detector |
| CN107877095A (en) * | 2017-10-31 | 2018-04-06 | 宁波更大集团有限公司 | The processing technology of ball-screw nut |
| CN112394104A (en) * | 2020-11-23 | 2021-02-23 | 中国人民解放军海军航空大学青岛校区 | Magnetic powder flaw detector with demagnetization function |
-
2013
- 2013-05-28 CN CN 201320298814 patent/CN203275364U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103245723A (en) * | 2013-05-28 | 2013-08-14 | 山东省特种设备检验研究院聊城分院 | Portable blot magnetic flaw detector |
| CN103245723B (en) * | 2013-05-28 | 2015-09-30 | 山东省特种设备检验研究院聊城分院 | A kind of Portable blot magnetic flaw detector |
| CN107877095A (en) * | 2017-10-31 | 2018-04-06 | 宁波更大集团有限公司 | The processing technology of ball-screw nut |
| CN107877095B (en) * | 2017-10-31 | 2020-04-10 | 宁波更大集团有限公司 | Machining process of ball screw nut |
| CN112394104A (en) * | 2020-11-23 | 2021-02-23 | 中国人民解放军海军航空大学青岛校区 | Magnetic powder flaw detector with demagnetization function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20131106 Effective date of abandoning: 20150930 |
|
| RGAV | Abandon patent right to avoid regrant |