CN102800506A - Permanent-magnet rapid operation mechanism - Google Patents
Permanent-magnet rapid operation mechanism Download PDFInfo
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- CN102800506A CN102800506A CN2012102942569A CN201210294256A CN102800506A CN 102800506 A CN102800506 A CN 102800506A CN 2012102942569 A CN2012102942569 A CN 2012102942569A CN 201210294256 A CN201210294256 A CN 201210294256A CN 102800506 A CN102800506 A CN 102800506A
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Abstract
The invention relates to a permanent-magnet rapid operation mechanism, which comprises a movable iron-core component, a static iron-core component, an opening coil, a flange, a closing coil, a cover plate and a buffering component, wherein the movable iron-core component comprises a guide rod and a plurality of members sleeving the guide rod; the static iron-core component comprises a bottom plate sleeving the guide rod and contacted with the movable iron-core spring; the bottom plate is sleeved with a permanent magnet; the permanent magnet is sleeved with a sleeve; on the side of the flange facing the permanent body is sleeved with the closing coil; the opening coil sleeving the movable iron core is positioned on the side of the flange facing a repulsion plate; and the cover plate sleeving an adjusting nut is connected with an end surface of a sleeve through the buffering component. The permanent-magnet rapid operation mechanism has the following advantages: 1, the opening operation can be carried out in a common speed opening mode and a failure rapid opening mode as required; 2, the permanent-magnet rapid operation mechanism has the characteristics of closing maintenance of a permanent magnet mechanism and rapid opening of a repulsion plate mechanism; and 3, the structure is simple, and the installation and the debugging are convenient.
Description
Technical field
The present invention relates to the quick operating mechanism of a kind of permanent magnetism, a kind of permanent magnetism combined floodgate keeps and the permanent magnet mechanism of quick acting switching-off but especially relate to.
Background technology
Existing permanent-magnet operating mechanism can be divided into two types according to its operation principle and structure: monostable permanent-magnet operating mechanism and bistable state permanent magnet operating mechanism both at home and abroad.Wherein the operation principle of bistable state permanent magnet operating mechanism is all leaned on permanent magnetism suction for the maintenance of branch, closing position; The operation principle of monostable permanent-magnet operating mechanism is that separating brake is a separating brake under the effect of tripping spring and arc control device touch spring, and remains on the separating brake position, has only closing position to keep relying on permanent magnetism suction.Through the relatively operation principle and the structure of two kinds of permanent-magnet operating mechanisms, can see that the power producing characteristics of bistable state permanent magnet operating mechanism is inconsistent with the load characteristic of circuit breaker, so limit the application of bistable state permanent magnet operating mechanism; The power producing characteristics of monostable permanent-magnet operating mechanism has the advantage of spring operating mechanism, can be good at cooperating with the load characteristic of circuit breaker, but owing to can't obtain desirable just-off speed, has limited the development and application of this kind operating mechanism to high-power circuit breaker.
Summary of the invention
The objective of the invention is: overcome the deficiency that existing technology exists, provide a kind of permanent magnetism keep combined floodgate, quick acting switching-off, simple in structure, Installation and Debugging convenient, have the quick operating mechanism of permanent magnetism of desirable just-off speed and power producing characteristics, the interrupting performance that increases substantially circuit breaker and electric life.
Technical scheme of the present invention is following:
The quick operating mechanism of a kind of permanent magnetism comprises moving core assembly, static iron core assembly, switching winding, flange, closing coil, cover plate and Buffer Unit; Described moving core assembly is made up of guide rod and some members of being socketed on the guide rod, and these some members are successively: moving iron core spring, moving iron core, repulsion dish, repulsion dish spring, adjusting nut and locking nut; Described static iron core assembly comprises the base plate that contacts with moving iron core spring that is socketed on the guide rod, is with permanent magnet on this base plate, is with sleeve on this permanent magnet; In the cavity between this sleeve inner peripheral surface and the moving iron core outer circumference surface 1 flange is arranged, this flange is 1 closing coil of socket on permanent magnet one side, towards repulsion dish one side 1 switching winding that is socketed on the moving iron core is arranged; The cover plate that is enclosed within on the adjusting nut is connected on the sleeve end face through Buffer Unit.
On the such scheme basis further technical scheme be,
The quick operating mechanism of described permanent magnetism, its repulsion dish is fixedly connected with moving iron core.
The quick operating mechanism of described permanent magnetism, its repulsion dish spring is arranged in the spring groove of repulsion dish; The spring groove degree of depth of this repulsion dish is less than repulsion dish spring elemental height; Repulsion dish spring is compression spring or dish spring.
The quick operating mechanism of described permanent magnetism, its moving iron core spring are arranged in the spring groove of moving iron core; Moving iron core spring is the compression spring, or the dish spring, or the combination of two kinds of springs.
The quick operating mechanism of described permanent magnetism, its Buffer Unit is made up of adjustment bolt and buffer spring, the screw coupling on adjustment bolt and the sleeve end face; Cover plate has the degree of freedom of axial motion with respect to the static iron core assembly.
The quick operating mechanism of described permanent magnetism, its flange is connected with bush whorl.
The quick operating mechanism of described permanent magnetism, its repulsion dish is a high conductivity material, comprises copper or aluminium.
The quick operating mechanism of described permanent magnetism, its moving iron core, base plate, sleeve, flange are high magnetic conductive material, comprise iron or silicon steel sheet.
The quick operating mechanism of described permanent magnetism, its cover plate and guide rod are non-magnet material, comprise stainless steel or titanium alloy.
The basic functional principle of the quick operating mechanism of permanent magnetism of the present invention is:
1, combined floodgate operation principle: utilize the magnetic field that the closing coil galvanization produces and the magnetic field of permanent magnet to superpose in the same way, make core assembly receive the electromagnetic attraction effect and move to closing position; 2, close a floodgate to keep operation principle: when combined floodgate work is accomplished, the closing coil outage, the magnetic field that utilizes permanent magnet to produce makes magnetic attraction that core assembly receives greater than the spring counter-force, and operating mechanism remains on closing position; 3, separating brake operation principle: on the repulsion dish, produce eddy current after utilizing the quick acting switching-off coil electricity, make iron core receive effect and the quick acting switching-off of electromagnetic repulsion force.
The remarkable technique effect of the quick operating mechanism of permanent magnetism of the present invention mainly is:
1, sub-switching operation can through changing the mode of switching winding energising voltage, be regulated opening velocity, thereby satisfy the specified disjunction of switch, the demands of different of short circuit breaking according to demand; 2, have the characteristics of maintenance of permanent magnet mechanism combined floodgate and repulsion dish quick acting switching-off concurrently; 3, simple in structure, Installation and Debugging convenience; 3, increase substantially the electric life of circuit breaker.
Description of drawings
Fig. 1 is the quick operating mechanism shaft section of permanent magnetism of the present invention partial schematic sectional view, and is as shown in the figure, and iron core 1.4 runs to the position of contact base plate 2.1;
Fig. 2 runs to away from base plate 2.1 positional structure sketch mapes for moving iron core 1.4.
The member name of each Reference numeral is called among the figure:
1-moves core assembly, 1.1-guide rod, 1.2-repulsion dish spring, 1.3-repulsion dish, the moving iron core of 1.4-, the moving iron core spring of 1.5-, 1.6-locking nut, 1.7-adjusting nut; 2-static iron core assembly, 2.1-base plate, 2.2-permanent magnet, 2.3-sleeve; 3-Buffer Unit, 3.1-adjustment bolt, 3.2-buffer spring; The 4-switching winding; The 5-flange; The 6-closing coil; The 7-cover plate.
Embodiment
In conjunction with accompanying drawing and embodiment the present invention is described further as follows:
Like Fig. 1, shown in 2: the quick operating mechanism of a kind of permanent magnetism comprises moving core assembly 1, static iron core assembly 2, switching winding 4, flange 5, closing coil 6, cover plate 7 and Buffer Unit 3; Described moving core assembly 1 is made up of guide rod 1.1 and some members of being socketed on the guide rod 1.1, and these some members are successively: moving iron core spring 1.5, moving iron core 1.4, repulsion dish 1.3, repulsion dish spring 1.2, adjusting nut 1.7 and locking nut 1.6; Described static iron core assembly 2 comprises the base plate 2.1 that contacts with moving iron core spring 1.5 that is socketed on the guide rod 1.1, is with permanent magnet 2.2 on this base plate 2.1, is with sleeve 2.3 on this permanent magnet 2.2; In the cavity between these sleeve 2.3 inner peripheral surfaces and moving iron core 1.4 outer circumference surfaces 1 flange 5 is arranged; This flange 5 is 1 closing coil 6 of socket on permanent magnet 2.2 1 sides; Towards repulsion dish 1.3 1 sides 1 switching winding 4 that is socketed on the moving iron core 1.4 is arranged; The spacing of described switching winding 4 end faces and repulsion dish 1.3 is less, is generally less than 4mm; The cover plate 7 that is enclosed within on the adjusting nut 1.7 is connected on sleeve 2.3 end faces through Buffer Unit 3.Described repulsion dish 1.3 is fixedly connected with moving iron core 1.4.Repulsion dish spring 1.2 is arranged in the spring groove of repulsion dish 1.3; The spring groove degree of depth of this repulsion dish 1.3 is less than repulsion dish spring 1.2 elemental heights; Repulsion dish spring 1.2 is compression spring or dish spring.Described moving iron core spring 1.5 is arranged in the spring groove of moving iron core 1.4; As shown in Figure 2, when repulsion dish 1.3 arrives with cover plate 7 contact extreme position, moving iron core 1.4 is to move the range of iron core 1.4 towards the end face of base plate 2.1 and the distance on base plate 2.1 planes; Moving iron core spring 1.5 is the compression spring, or the dish spring, or the combination of two kinds of springs, and is as shown in Figure 1, and moving iron core spring 1.5 is for the compression spring, and is as shown in Figure 2, and moving iron core spring 1.5 is compression spring and the combination of dish spring.Buffer Unit 3 is made up of adjustment bolt 3.1 and buffer spring 3.2, and Buffer Unit 3 is no less than 3; Screw coupling on adjustment bolt 3.1 and sleeve 2.3 end faces; Cover plate 7 has the degree of freedom of axial motion with respect to static iron core assembly 2.Described flange 5 is threaded with sleeve 2.3.Repulsion dish 1.3 is a high conductivity material, comprises copper or aluminium, and present embodiment is preferably copper.Described moving iron core 1.4, base plate 2.1, sleeve 2.3, flange 5 are high magnetic conductive material, comprise iron or silicon steel sheet, and present embodiment is preferably iron.Described cover plate 7 is a non-magnet material with guide rod 1.1, comprises stainless steel or titanium alloy, and present embodiment is preferably stainless steel.Described flange 5 axially is useful on socket, supports the seam of closing coil 6.The medial surface of cover plate 7 and repulsion dish 1.3 contacted one sides are the inclined-plane that matches.
Groundwork process of the present invention is following:
It is as shown in Figure 2: when operating mechanism is in the separating brake position; The working gas gap of moving iron core 1.4 and base plate 2.1 is maximum; Simultaneously no current flows through in switching winding 4 and the closing coil 6, this moment since the magnetic attraction that moving iron core 1.4 receives less than the spring counter-force, so operating mechanism remains on the separating brake position.
After operating mechanism receives switching signal; Closing coil 6 galvanizations; Coil current produces the magnetic field with the magnetic field of permanent magnet equidirectional, and the resultant magnetic field strengthens, and the electromagnetic attraction that iron core 1.4 is received increases; The suction that receives when moving iron core 1.4 is during greater than the spring counter-force, and operating mechanism carries out feed motion until the combined floodgate holding position.
As shown in Figure 1: behind the operating mechanism arrival combined floodgate holding position, closing coil 6 outages this moment are because moving iron core 1.4 receives the magnetic attraction in permanent magnet generation magnetic field greater than the spring counter-force, so operating mechanism remains on closing position.
When sub-gate signal arrives; Give switching winding 4 galvanizations; Because the transient magnetic field that coil current produces induces eddy current in repulsion dish 1.3; Make between repulsion dish 1.3 and the switching winding 4 and produce electrodynamic repulsion force, when electrodynamic repulsion force and spring counter-force make a concerted effort to produce magnetic attraction greater than permanent magnet the time, operating mechanism is accomplished the quick acting switching-off process under the force action of electrodynamic repulsion force and spring counter-force.
Protection scope of the present invention is not limited to the foregoing description.
Claims (9)
1. the quick operating mechanism of permanent magnetism is characterized in that, comprises moving core assembly (1), static iron core assembly (2), switching winding (4), flange (5), closing coil (6), cover plate (7) and Buffer Unit (3); Described moving core assembly (1) is made up of guide rod (1.1) and some members of being socketed on the guide rod (1.1), and these some members are successively: moving iron core spring (1.5), moving iron core (1.4), repulsion dish (1.3), repulsion dish spring (1.2), adjusting nut (1.7) and locking nut (1.6); Described static iron core assembly (2) comprises the base plate (2.1) that contacts with moving iron core spring (1.5) that is socketed on the guide rod (1.1), is with permanent magnet (2.2) on this base plate (2.1), is with sleeve (2.3) on this permanent magnet (2.2); In the cavity between this sleeve (2.3) inner peripheral surface and moving iron core (1.4) outer circumference surface 1 flange (5) is arranged; This flange (5) is 1 closing coil of socket (6) on permanent magnet (2.2) one sides, towards repulsion dish (1.3) one sides 1 switching winding (4) that is socketed on the moving iron core (1.4) is arranged; The cover plate (7) that is enclosed within on the adjusting nut (1.7) is connected on sleeve (2.3) end face through Buffer Unit (3).
2. the quick operating mechanism of permanent magnetism according to claim 1 is characterized in that, described repulsion dish (1.3) is fixedly connected with moving iron core (1.4).
3. the quick operating mechanism of permanent magnetism according to claim 1 is characterized in that described repulsion dish spring (1.2) is arranged in the spring groove of repulsion dish (1.3); The spring groove degree of depth of this repulsion dish (1.3) is less than repulsion dish spring (1.2) elemental height; Repulsion dish spring (1.2) is compression spring or dish spring.
4. the quick operating mechanism of permanent magnetism according to claim 1 is characterized in that described moving iron core spring (1.5) is arranged in the spring groove of moving iron core (1.4); Moving iron core spring (1.5) is the compression spring, or the dish spring, or the combination of two kinds of springs.
5. the quick operating mechanism of permanent magnetism according to claim 1 is characterized in that, described Buffer Unit (3) is made up of adjustment bolt (3.1) and buffer spring (3.2), the screw coupling on adjustment bolt (3.1) and sleeve (2.3) end face; Cover plate (7) has the degree of freedom of axial motion with respect to static iron core assembly (2).
6. the quick operating mechanism of permanent magnetism according to claim 1 is characterized in that, described flange (5) is threaded with sleeve (2.3).
7. the quick operating mechanism of permanent magnetism according to claim 1 is characterized in that described repulsion dish (1.3) is a high conductivity material, comprises copper or aluminium.
8. the quick operating mechanism of permanent magnetism according to claim 1 is characterized in that, described moving iron core (1.4), base plate (2.1), sleeve (2.3), flange (5) are high magnetic conductive material, comprise iron or silicon steel sheet.
9. the quick operating mechanism of permanent magnetism according to claim 1 is characterized in that, described cover plate (7) and guide rod (1.1) are non-magnet material, comprise stainless steel or titanium alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210294256.9A CN102800506B (en) | 2012-08-19 | 2012-08-19 | Permanent-magnet rapid operation mechanism |
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| CN201210294256.9A CN102800506B (en) | 2012-08-19 | 2012-08-19 | Permanent-magnet rapid operation mechanism |
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| CN102800506A true CN102800506A (en) | 2012-11-28 |
| CN102800506B CN102800506B (en) | 2015-02-04 |
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| CN201210294256.9A Active CN102800506B (en) | 2012-08-19 | 2012-08-19 | Permanent-magnet rapid operation mechanism |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103441006A (en) * | 2013-08-06 | 2013-12-11 | 江苏森源电气股份有限公司 | Electromagnetic operating mechanism for vacuum contactor-fuse combined electric appliance |
| CN103560023A (en) * | 2013-11-15 | 2014-02-05 | 沈阳工业大学 | Three-fracture double-acting type high-speed permanent magnet repulsion switch and method thereof |
| CN104103462A (en) * | 2013-04-07 | 2014-10-15 | 深圳市金博联电力技术有限公司 | Permanent-magnet mechanism capable of adjusting closing-opening time and adjusting method |
| CN106356211A (en) * | 2016-10-13 | 2017-01-25 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七二研究所） | Gas buffer device for high-speed repulsion mechanism |
| CN106356237A (en) * | 2016-09-14 | 2017-01-25 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七二研究所） | Liquid metal breaker |
| CN111584318A (en) * | 2019-05-21 | 2020-08-25 | 杭州德睿达电气有限公司 | Adjustable permanent magnet mechanism |
| CN112366115A (en) * | 2020-11-02 | 2021-02-12 | 西安交通大学 | Integrated electromagnetic repulsion mechanism with permanent magnet retaining device and buffer spring |
| CN112927982A (en) * | 2021-01-25 | 2021-06-08 | 西安交通大学 | Spring retaining device capable of reducing switching-on and switching-off rebounding of rapid vacuum switch and working method |
| CN113889365A (en) * | 2020-07-02 | 2022-01-04 | 陕西新通智能科技有限公司 | Anti-impact hollow movable iron core of electromagnetic switch and manufacturing method thereof |
| CN114141551A (en) * | 2021-11-24 | 2022-03-04 | 杭州电子科技大学信息工程学院 | Non-contact button auxiliary device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2349651Y (en) * | 1998-08-31 | 1999-11-17 | 邹文成 | Permanent magnet operation mechanism |
| CN2457721Y (en) * | 2000-09-18 | 2001-10-31 | 郭大先 | Permanent magnet control mechanism |
| CN2570961Y (en) * | 2002-02-28 | 2003-09-03 | 吉林汇圣强磁有限公司 | Electromagnetically actuated permanent-magnet retainer |
| CN101783263A (en) * | 2010-02-04 | 2010-07-21 | 东南大学 | Bistable-state permanent magnet mechanism of parallel magnetic circuits |
-
2012
- 2012-08-19 CN CN201210294256.9A patent/CN102800506B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2349651Y (en) * | 1998-08-31 | 1999-11-17 | 邹文成 | Permanent magnet operation mechanism |
| CN2457721Y (en) * | 2000-09-18 | 2001-10-31 | 郭大先 | Permanent magnet control mechanism |
| CN2570961Y (en) * | 2002-02-28 | 2003-09-03 | 吉林汇圣强磁有限公司 | Electromagnetically actuated permanent-magnet retainer |
| CN101783263A (en) * | 2010-02-04 | 2010-07-21 | 东南大学 | Bistable-state permanent magnet mechanism of parallel magnetic circuits |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104103462A (en) * | 2013-04-07 | 2014-10-15 | 深圳市金博联电力技术有限公司 | Permanent-magnet mechanism capable of adjusting closing-opening time and adjusting method |
| CN103441006A (en) * | 2013-08-06 | 2013-12-11 | 江苏森源电气股份有限公司 | Electromagnetic operating mechanism for vacuum contactor-fuse combined electric appliance |
| CN103441006B (en) * | 2013-08-06 | 2016-06-22 | 江苏森源电气股份有限公司 | The electromagnetic operating mechanism of vacuum contactor-fuse combined electric appliance |
| CN103560023A (en) * | 2013-11-15 | 2014-02-05 | 沈阳工业大学 | Three-fracture double-acting type high-speed permanent magnet repulsion switch and method thereof |
| CN106356237A (en) * | 2016-09-14 | 2017-01-25 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七二研究所） | Liquid metal breaker |
| CN106356237B (en) * | 2016-09-14 | 2019-03-19 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | A kind of liquid metal breaker |
| CN106356211A (en) * | 2016-10-13 | 2017-01-25 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七二研究所） | Gas buffer device for high-speed repulsion mechanism |
| CN106356211B (en) * | 2016-10-13 | 2019-08-30 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | A kind of high speed repulsive force mechanism gas buffer |
| CN111584318A (en) * | 2019-05-21 | 2020-08-25 | 杭州德睿达电气有限公司 | Adjustable permanent magnet mechanism |
| CN111584318B (en) * | 2019-05-21 | 2022-07-08 | 杭州德睿达电气有限公司 | Adjustable permanent magnet mechanism |
| CN113889365A (en) * | 2020-07-02 | 2022-01-04 | 陕西新通智能科技有限公司 | Anti-impact hollow movable iron core of electromagnetic switch and manufacturing method thereof |
| CN113889365B (en) * | 2020-07-02 | 2024-05-14 | 陕西新通智能科技有限公司 | Lost motion iron core in electromagnetic switch anti-impact and manufacturing method thereof |
| CN112366115A (en) * | 2020-11-02 | 2021-02-12 | 西安交通大学 | Integrated electromagnetic repulsion mechanism with permanent magnet retaining device and buffer spring |
| CN112927982A (en) * | 2021-01-25 | 2021-06-08 | 西安交通大学 | Spring retaining device capable of reducing switching-on and switching-off rebounding of rapid vacuum switch and working method |
| CN114141551A (en) * | 2021-11-24 | 2022-03-04 | 杭州电子科技大学信息工程学院 | Non-contact button auxiliary device |
| CN114141551B (en) * | 2021-11-24 | 2023-12-22 | 杭州电子科技大学信息工程学院 | Non-contact button auxiliary device |
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