CN201126398Y - Electric vibration table combined degaussing apparatus - Google Patents
Electric vibration table combined degaussing apparatus Download PDFInfo
- Publication number
- CN201126398Y CN201126398Y CNU2007201315803U CN200720131580U CN201126398Y CN 201126398 Y CN201126398 Y CN 201126398Y CN U2007201315803 U CNU2007201315803 U CN U2007201315803U CN 200720131580 U CN200720131580 U CN 200720131580U CN 201126398 Y CN201126398 Y CN 201126398Y
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- upper cover
- magnetic
- electric vibration
- vibration table
- worktable
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Abstract
An electric vibration table combination degaussing gear comprises a degaussing coil in the electric worktable and an upper cover shielding plate which covers the upper end surface of the upper cover, and the inner surface of the side surface or the outer surface. The upper cover shielding plate covers the peripheral table end surface of the worktable, when the electric vibration table is use, part of the magnetic field of the moving coil and table leaks towards the worktable and the side of the worktable, the magnetic leakage normal to the table is greatly reduced due to the action of degaussing coil, therefore the table surface magnetic field is under 1mT; when the magnetic leakage is towards the upper cover shielding plate, the magnetic leakage can not pass through the shielding plate due to high magnetic conductivity and small magnetic resistance of shielding plate, therefore the magnetic leakage amount passing through the periphery of the worktable is reduced, thus the influence of the magnetic leakage to the periphery is reduced to the lowest. When both are used in combination, the current of the existing degaussing coil is less than the current of the traditional degaussing coil, therefore the heating amount is very less and the reliability of the product performance is increased.
Description
Technical field
The utility model relates to a kind of environmental test electric vibration table, is specifically related to the degaussing gear in the electric vibration table.
Background technology
Electric vibration testing bench (abbreviation electric vibration table) is a kind of equipment of simulated environment vibration, can evaluate the resistance to shock of a product by vibration test, provide rational basis for verifying or improving production quality, therefore be widely used in industries such as space flight, aviation, boats and ships, automobile, electronics, communication, household electrical appliances and instrument and meter.
Electric vibration table utilizes the electric and magnetic oscillation principle design, and its structure mainly is made up of several parts such as stage body, magnetic cylinder, field copper, moving-coil, hanger bearing guide piece and cooling devices.Basic functional principle is: the field copper that is placed in the magnetic cylinder feeds direct current generation stationary magnetic field, and the moving-coil that has work top and drive coil is connected with exchange current, and this moving-coil is arranged in the stationary magnetic field.Owing to interact between exchange current and the stationary magnetic field, the exciting force that generation one changes with size of current and direction promotes moving-coil and vibrates back and forth around the centre of oscillation.
Existing electric vibration table, the upper end of its stage body 8 (promptly being provided with an end of work top 3) generally all is coated with upper cover 4, with upper cover 4 guide piece 9 is encapsulated in inside; Work top 3 is generally circle, which is provided with table top screw 11, is connected with dust protection rubber film 10 in the gap of moving-coil 7 and stage body 8, and structure as shown in Figure 1.Must leak (general magnetic field intensity is at 3mT to 5mT) to work top in some magnetic field in the above-mentioned electric vibration table work, the magnetic flux leakage on the national Specification work top should be below 5mT usually.For the magnetic-field-sensitive test specimen that requires below 1mT, still can not satisfy actual application.The mode of the reduction leakage field of now extensively taking is: increase anti-magnetized coil 1 below stage body internal work table top, see accompanying drawing 2, produce a magnetic field opposite with anti-magnetized coil 1 and offset leakage field with the leakage field direction, this method is better to offsetting work top vertical direction leakage field effect, can effectively reduce the leakage field on the work top, but also have following disadvantage: because of former stage body upper end magnetic flux leakage many, magnetic flux leakage is few on the side direction, " overflow " to the stage body side direction from upper cover 4 in the magnetic field that the anti-magnetized coil that increases produces, also have a large amount of residues to become new leakage field after having offset the side direction leakage field, the magnetic flux leakage of stage body sidepiece is significantly increased.These leakage fields can disturb the operate as normal of surrounding devices.
Summary of the invention
The utility model provides electric vibration table combination degaussing gear, and its objective is will be on the basis that does not influence the shaking table performance, in the leakage field leakage field of stage body side is dropped to minimumly above eliminating stage body, avoids interference the operate as normal of surrounding devices.
For achieving the above object, the technical solution adopted in the utility model is: a kind of electric vibration table combination degaussing gear, comprise the anti-magnetized coil of being located in the electric table stage body, also comprise the upper cover barricade, this upper cover barricade covers and is fixed on the inside surface or outside surface of upper cover upper surface and side direction side face.
Related content in the technique scheme is explained as follows:
1, in the such scheme, the volume of described anti-magnetized coil is decided by the working current by himself, owing to cooperate the upper cover barricade to use, so anti-magnetized coil volume of the present utility model is less than the anti-magnetized coil of shaking table in the past.
2, in the such scheme, described upper cover barricade is meant the plate body with shielding action, adopt magnetoconductivity height, lightweight material such as iron, silicon steel sheet etc. to make, the best is that to select thickness for use be the common power transformer silicon steel sheet of δ 0.3～1mm, and shielding is light weight again well.
3, in the such scheme, be adhesively fixed with bonding agent between described upper cover barricade and worktable upper cover, here the bonding agent of Cai Yonging preferably bonding intensity good, be difficult for aging material, as epoxy resin.Make barricade and worktable upper cover fixing in aggregates like this, shake is little in vibration at high speed.
4, in the such scheme, described upper cover barricade bondingly was made of multilayer magnetic conduction shielding stacked adding, and, every being provided with rubber layer, play the vibration damping purpose between each adjacent magnetic conduction screen layer.
The utility model principle of work and advantage are: the utility model all covers with the upper surface and the side direction side face of upper cover barricade with upper cover, when electric vibration table in when work, inner some magnetic field of moving-coil and stage body can be to work top and side leakage thereof, this leakage field because the effect of anti-magnetized coil is weakened greatly, makes table top magnetic field reach below the 1mT perpendicular to the part of table top; And when this leakage field during to the upper cover barricade, because of the magnetoconductivity height of barricade, magnetic resistance is little, and leakage field can't pass barricade, thereby has reduced the magnetic flux leakage of wearing to the worktable periphery, make its to around influence drop to minimum.Both are used, and make traditional little of the current ratio of existing anti-magnetized coil, and thermal value is just little a lot of like this, and reliability of products also is improved.
Description of drawings
Accompanying drawing 1 is a prior art shaking table work top part synoptic diagram;
Accompanying drawing 2 adds the anti-magnetized coil structural representation for prior art;
Accompanying drawing 3 is looked synoptic diagram for structure master of the present utility model;
Accompanying drawing 4 is the cross-sectional schematic of embodiment one table top barricade and upper cover barricade;
Accompanying drawing 5 is the cross-sectional schematic of embodiment two table top barricades and upper cover barricade.
In the above accompanying drawing: 1, anti-magnetized coil; 2, upper cover barricade; 3, work top; 4, upper cover; 5, rubber layer; 6, silicon steel sheet; 7, moving-coil; 8, stage body; 9, guide piece; 10, dust protection rubber film; 11, table top screw; 12, anti-magnetized coil.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described:
Embodiment one: shown in accompanying drawing 3,
A kind of electric vibration table combination degaussing gear is made of anti-magnetized coil in the stage body of electric table 1 and upper cover barricade 2, and this upper cover barricade 2 covers and is fixed on the inside surface or outside surface of upper cover 4 upper surfaces and side direction side face.Wherein, upper cover barricade 2 is adhesively fixed the concrete epoxy resin that adopts as stick.Anti-magnetized coil 1 specifically the position is set and step mode is prior art, repeat no more here.
Shown in accompanying drawing 4, described upper cover barricade 2 specifically is made of rubber layer 5 stacks in interval between three layers of magnetic conduction screen layer, being on upper cover barricade 2 thickness directions totally six layers, is that 5 of three layers of magnetic conduction screen layer and three layers of rubber layers are across the bonding formation that superposes from level to level.Described each magnetic conduction screen layer is the thick silicon steel sheet of 0.3mm 6.
Embodiment two: shown in accompanying drawing 3,
A kind of electric vibration table magnetic leakage shielding structure, comprise the anti-magnetized coil 1 in the stage body of electric table and the upper cover barricade 2 of electric table, be with the difference of embodiment one: shown in accompanying drawing 5, described upper cover barricade 2 specifically is to be made of an individual layer magnetic conduction screen layer and a rubber layer 5, and described individual layer magnetic conduction screen layer is the thick silicon steel sheet of 1mm 6.
The utility model covers with the stage body end face of upper cover barricade 2 with work top 3 peripheries, when electric vibration table in when work, moving-coil 7 and stage body 8 inner some magnetic field can be to work top 3 and side leakage thereof, this leakage field because the effect of anti-magnetized coil 1 is weakened greatly, makes table top magnetic field reach below the 1mT perpendicular to the part of table top 3; And when this leakage field during to upper cover barricade 2, because of the magnetoconductivity height of barricade 2, magnetic resistance is little, and leakage field can't pass barricade 2, thereby has reduced the magnetic flux leakage of wearing to the worktable periphery, make its to around influence drop to minimum.Both are used, and make traditional little of the current ratio of existing anti-magnetized coil, and thermal value is just little a lot of like this, and the reliability of properties of product also is improved.
The foregoing description only is explanation technical conceive of the present utility model and characteristics, and its purpose is to allow the personage who is familiar with this technology can understand content of the present utility model and enforcement according to this, can not limit protection domain of the present utility model with this.All equivalences of being done according to the utility model spirit change or modify, and all should be encompassed within the protection domain of the present utility model.
Claims (4)
1, a kind of electric vibration table combination degaussing gear, comprise the anti-magnetized coil of being located in the electric table stage body (1), it is characterized in that: also comprise upper cover barricade (2), this upper cover barricade (2) covers on the inside surface or outside surface that is fixed on upper cover (4) upper surface and the side direction side face.
2, electric vibration table according to claim 1 combination degaussing gear is characterized in that: described upper cover barricade (2) bondingly was made of multilayer magnetic conduction shielding stacked adding.
3, electric vibration table according to claim 2 combination degaussing gear is characterized in that: between described each adjacent magnetic conduction screen layer every being provided with rubber layer.
4, electric vibration table combination degaussing gear according to claim 2, it is characterized in that: described magnetic conduction screen layer is a silicon steel sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201315803U CN201126398Y (en) | 2007-12-17 | 2007-12-17 | Electric vibration table combined degaussing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201315803U CN201126398Y (en) | 2007-12-17 | 2007-12-17 | Electric vibration table combined degaussing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201126398Y true CN201126398Y (en) | 2008-10-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201315803U Expired - Lifetime CN201126398Y (en) | 2007-12-17 | 2007-12-17 | Electric vibration table combined degaussing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201126398Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102564716A (en) * | 2011-11-25 | 2012-07-11 | 国营红峰机械厂 | Magnetic isolation vibration bracket for magnetosensitive element |
| CN103217263A (en) * | 2012-12-25 | 2013-07-24 | 苏州长菱测试技术有限公司 | Split type upper electrode plate applied to vibrating table |
| CN108695991A (en) * | 2017-04-03 | 2018-10-23 | 三星电机株式会社 | Magnetic field shielding structure and the mobile device for including the magnetic field shielding structure |
| CN111649893A (en) * | 2020-06-30 | 2020-09-11 | 苏州苏试试验集团股份有限公司 | Spatial three-axis magnetic field control method for electric vibration table |
| CN111964855A (en) * | 2019-12-31 | 2020-11-20 | 苏州苏试试验集团股份有限公司 | Automatic magnetic flux leakage control method for electric vibration table |
| CN112880952A (en) * | 2021-02-22 | 2021-06-01 | 苏州苏试试验集团股份有限公司 | Air-cooled electric vibration table with electromagnetic shielding function |
-
2007
- 2007-12-17 CN CNU2007201315803U patent/CN201126398Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102564716A (en) * | 2011-11-25 | 2012-07-11 | 国营红峰机械厂 | Magnetic isolation vibration bracket for magnetosensitive element |
| CN102564716B (en) * | 2011-11-25 | 2015-02-11 | 湖北三江航天红峰控制有限公司 | Magnetic isolation vibration bracket for magnetosensitive element |
| CN103217263A (en) * | 2012-12-25 | 2013-07-24 | 苏州长菱测试技术有限公司 | Split type upper electrode plate applied to vibrating table |
| CN108695991A (en) * | 2017-04-03 | 2018-10-23 | 三星电机株式会社 | Magnetic field shielding structure and the mobile device for including the magnetic field shielding structure |
| CN111964855A (en) * | 2019-12-31 | 2020-11-20 | 苏州苏试试验集团股份有限公司 | Automatic magnetic flux leakage control method for electric vibration table |
| CN111649893A (en) * | 2020-06-30 | 2020-09-11 | 苏州苏试试验集团股份有限公司 | Spatial three-axis magnetic field control method for electric vibration table |
| CN112880952A (en) * | 2021-02-22 | 2021-06-01 | 苏州苏试试验集团股份有限公司 | Air-cooled electric vibration table with electromagnetic shielding function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SUZHOU SUSHISHIYAN INSTRUMENT CO., LTD. Free format text: FORMER OWNER: SUZHOU TESTING EQUIPMENT GENERAL FACTORY Effective date: 20090522 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20090522 Address after: Jiangsu Province, Suzhou Industrial Park, the new science and Technology City, only Ting Town, No. 18 Ji Feng Road, zip code: 215122 Patentee after: Suzhou Sushi Testing Instrument Co., Ltd. Address before: No. 55 deer Road, hi tech Zone, Jiangsu, Suzhou Province: 215129 Patentee before: Suzhou Testing Instrument Factory |
|
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 215122 Suzhou Industrial Park, the new science and Technology City, the town of Ting Ting Feng Road, No. 18, No. Patentee after: Suzhou Sushi Testing Instrument Co.,Ltd. Address before: 215122 Suzhou Industrial Park, the new science and Technology City, the town of Ting Ting Feng Road, No. 18, No. Patentee before: Suzhou Sushi Testing Instrument Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20081001 |
|
| CX01 | Expiry of patent term |