CN102723247A - Short-circuit trip device for controlling and protecting switch - Google Patents
Short-circuit trip device for controlling and protecting switch Download PDFInfo
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- CN102723247A CN102723247A CN2012102330562A CN201210233056A CN102723247A CN 102723247 A CN102723247 A CN 102723247A CN 2012102330562 A CN2012102330562 A CN 2012102330562A CN 201210233056 A CN201210233056 A CN 201210233056A CN 102723247 A CN102723247 A CN 102723247A
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- iron core
- short circuit
- moving iron
- circuit trip
- trip gear
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Abstract
The invention discloses a short-circuit trip device for controlling and protecting a switch, comprising a magnet yoke, and a static iron core and a dynamic iron core which are arranged in the magnet yoke; the dynamic iron core can be linearly close and separated in a manner relative to the static iron core; a mandril is fixedly connected on one end of the dynamic iron core which is relative to the static iron core; the mandril penetrates through a hole formed on the static iron core and extends out of the magnet yoke; the other end of the dynamic iron core is provided with a guide column which is fixedly arranged along a moving direction; the guide column penetrates through a guide hole which is formed on a magnet yoke plate for sealing the magnet yoke; an adjusting screw sleeve for adjusting the dynamic iron core to move in a manner relative to the magnet yoke plate is arranged between the guide hole of the magnet yoke plate and a guide column of the dynamic iron core; and the adjusting screw sleeve is pressed on the dynamic iron core, is in threaded connection with the guide hole of the magnet yoke plate, and is in sliding connection with the guide column of the dynamic iron core. The short-circuit trip device not only can adjust an air gap between the dynamic and static iron cores but also has good suction disconnection capability, and is particularly applicable to the control and protection of the switch.
Description
Technical field
The invention belongs to the low-voltage electrical field, particularly a kind of be used to control with the short circuit of protection switch take off a mouthful device.
Background technology
In the low-voltage electrical field, control can substitute multiple traditional discrete components such as circuit breaker (fuse), contactor, overload relay, starter, isolator and ancillary apparatus with protection switch, therefore obtains application more and more widely.The short circuit trip gear is used for quick breaking-off contact before the short circuit peak value arrives, and realizes short-circuit protection.The short circuit trip gear is inhaled moving iron core get off through the suction of fixed core and moving iron core, and the push rod that will be fixed in moving iron core ejects downwards, the disjunction of control contact.
For the short circuit trip gear, the action that short circuit is threaded off not only with flow through current related, also relevant with the sound iron core air gap of coil turn, contact counter-force, short circuit trip gear etc.In actual production process, for the short circuit trip gear of different model, its operating current is stipulated, the contact counter-force is also definite, and corresponding different size also has certain number of turn regulation, and these too many difference can not take place.But plant produced band magnetic tripping mechanism adopts riveted and fixed now; Because of related components difference or processing batch difference; Consistency of product is bad; Thereby can cause the air gap of different short circuit trip gears different, can directly cause the operating current of product inconsistent like this, operate time is inconsistent, directly influences the short circuit breaking performance of product.
In order to regulate the air gap between the trip gear sound iron core; Chinese patent CN201490132U discloses a kind of instantaneous release of circuit breaker; This release when the circuit failed because, is produced the armature and the adhesive unshakable in one's determination of electromagnetic attraction, armature is rotated to an angle after; Clash into the draw bar of circuit breaker, reach the purpose of dropout separating brake.In order to regulate air gap; This release yoke is provided with the fine setting seat, on the fine setting seat micrometer adjusting screw is set, and on armature, adds the armature pressing plate; Can rotate micrometer adjusting screw and change armature and gap unshakable in one's determination, the short circuit drop-away value is controlled in the very little error range.But; This instantaneous release armature and the attracting mode that adopts clapper-type unshakable in one's determination; Because armature is arc with mobile route unshakable in one's determination, causes the side that wherein radius is little can not in time reach the desired distance of disjunction, and makes thus in attracting process; The long side of radius is accomplished adhesive needs the long time to accomplish bonding state, so its adhesive and breaking speed are lower; It can only be applied in the less demanding occasion of breaking capacity.And for the short circuit trip gear on control and the protection switch; It need have the function of quick pick-up and disjunction; Like this, structurally need move fixed core relatively unshakable in one's determination and carry out rectilinear motion and just can meet the demands, and for the short circuit trip gear of this version; Then also need consider the influence of adjusting device for the device of regulating air gap, guarantee that promptly moving stable combination and the released state of fixed core relatively unshakable in one's determination is its problem that must consider for sound adhesive ability unshakable in one's determination.All be provided with moving guiding mechanism unshakable in one's determination for solving such problem prior art; Like above-mentioned connection armature of the prior art and pivot unshakable in one's determination; And usually moving iron core be in the straight-line trip gear, and the guide post that moves afterbody unshakable in one's determination reaches the bullport on the housing that is molded over that cooperates with guide post.Obviously in such structure, be provided with and have certain difficulty like the disclosed air gap adjusting device of above-mentioned prior art; Because directly adopt above-mentioned screw adjusted of the prior art mechanism; Then need two adjustment screw be set around guide post and bullport at least; The problem of bringing thus is: when the manual adjustment air gap, owing to artificial error makes moving iron core can not combine to reduce the service behaviour of product on request fully with fixed core.Therefore in the prior art, also there is not this device that can regulate air gap between the sound iron core.
Summary of the invention
For this reason, technical problem to be solved by this invention is the existing nonadjustable problem of rectilinear motion sound iron core air gap that is used to control with the short circuit trip gear of protection switch, and then a kind of short circuit trip gear that can regulate the sound iron core air gap is provided.
For solving the problems of the technologies described above, the present invention discloses a kind of short circuit trip gear that is used to control with protection switch, and it comprises, yoke; Fixed core is fixedly set in said yoke inside; Moving unshakable in one's determination; It is inner to be arranged on to reciprocating motion said yoke; Can said relatively fixed core straight line near with separate, said moving iron core is fixedly connected with push rod at an end relative with said fixed core, said push rod is arranged in the hole of moulding on the said fixed core and stretches out said yoke outside; The other end of said moving iron core is provided with along the fixing lead of moving direction; Said lead passes the pilot hole that takes shape on the yoke plate that is used to seal said yoke, is provided for regulating the Adjusting bolt Adjusting screw that said moving iron core moves relative to said yoke plate between the pilot hole of said yoke plate and the lead of said moving iron core, and said Adjusting bolt Adjusting screw is pressed and is located on the said moving iron core; It is threaded with the pilot hole of said yoke plate, is slidingly connected with the lead of said moving iron core.
In the above-mentioned short circuit trip gear, the upper end of said moving iron core is provided with shoulder, and the lead of said moving iron core is the cylinder that takes shape on the said shoulder, and said Adjusting bolt Adjusting screw is pressed against on the said shoulder.
In the above-mentioned short circuit trip gear, the upper end of said Adjusting bolt Adjusting screw is provided with inside flange, and the said flange position of said Adjusting bolt Adjusting screw is pressed against on the said moving iron core.
In the above-mentioned short circuit trip gear, the outside of said fixed core and said moving iron core is arranged with skeleton, and said moving iron core and said skeleton are slidingly connected.
In the above-mentioned short circuit trip gear, the outside of said skeleton is set with coil.
In the above-mentioned short circuit trip gear, be arranged with stage clip on the said push rod, said stage clip is pressed against between said fixed core and the said moving iron core.
In the above-mentioned short circuit trip gear, offer stepped hole on the said fixed core, said stage clip is pressed against the step place of said fixed core.
Technique scheme of the present invention is compared prior art and is had the following advantages:
The present invention is used to control the quick short circuit trip gear with protection switch, has increased the Adjusting bolt Adjusting screw that can regulate air gap between the sound iron core at moving unshakable in one's determination and yoke plate, through the rotation adjusting swivel nut, can effectively change the air gap of sound iron core; When producing debugging, can the situation of not dismounting product under, regulate air gap, and then the dropout parameter of adjustment product; Can effectively avoid because the production debug time that parts processing causes is long, parts are done over again even scrap.
Simultaneously, this Adjusting bolt Adjusting screw is sheathed on the moving iron core, and it makes the adhesive disjunction effect between iron core and the fixed core reliable and stable for the effect that moving motion unshakable in one's determination has guidance quality, and the adjusting device of increase does not influence the dropout ability of this short circuit trip gear.
And the adjusting device that has increased has improved the dropout performance of short circuit trip gear under the prerequisite of overall dimension that does not influence the short circuit trip gear and installation method, have favorable economic benefit and higher utility.
Description of drawings
For content of the present invention is more clearly understood, below according to a particular embodiment of the invention and combine accompanying drawing, the present invention is done further detailed explanation, wherein
Fig. 1 is the profile of short circuit trip gear embodiment 1 of the present invention;
Fig. 2 is the profile of short circuit trip gear embodiment 2 of the present invention.
Reference numeral is expressed as among the figure:
The 1-yoke, the 2-yoke plate, the 3-skeleton, the 4-fixed core, the 5-stage clip, the 6-push rod, 7-is moving unshakable in one's determination, 71-shoulder, 8-Adjusting bolt Adjusting screw, 81-flange, 9-coil.
Embodiment
Below will combine accompanying drawing, and use following examples that the present invention is further set forth.
Fig. 1 for disclosed by the invention be used to control with one of the short circuit trip gear of protection switch preferred embodiment.This short circuit trip gear comprises yoke 1 and is arranged at the inner fixed core 4 of said yoke 1 with moving unshakable in one's determination 7, and said fixed core 4 is provided with said moving unshakable in one's determination 7 relatively and at interval, said moving unshakable in one's determination 7 can said relatively fixed core 4 straight lines near with separate; Said moving unshakable in one's determination 7 are being fixedly connected with push rod 6 with said fixed core 4 relative ends; Said push rod 6 is arranged in the hole of moulding on the said fixed core 4 and stretches out said yoke 1 outside; Said moving unshakable in one's determination 7 the other end is provided with along the fixing lead of moving direction, and said lead passes the pilot hole that takes shape on the yoke plate 2 that is used to seal said yoke 1, is provided for regulating said moving unshakable in one's determination 7 Adjusting bolt Adjusting screws 8 that move relative to said yoke plate 2 between the pilot hole of said yoke plate 2 and said moving unshakable in one's determination 7 the lead; Wherein, Said moving unshakable in one's determination 7 upper end is provided with shoulder 71, and said moving unshakable in one's determination 7 lead is the cylinder that takes shape on the said shoulder 71, and said Adjusting bolt Adjusting screw 8 is pressed against on the said shoulder 71; It is threaded with said yoke plate 2, and said moving unshakable in one's determination 7 is slidingly connected.Before this short circuit trip gear dispatched from the factory, through rotating said Adjusting bolt Adjusting screw 8, Adjusting bolt Adjusting screw 8 drove said moving 7 motions unshakable in one's determination, and said fixed core 4 keeps static.Therefore, sound air gap unshakable in one's determination just changes, under the situation that flows through same electric current, said moving unshakable in one's determination 7 and said fixed core 4 between electromagnetic force just change, if realize same tripping force, the electric current that flows through also just changes.Preferably, can select the pitch size of said Adjusting bolt Adjusting screw 8 according to different fine setting situation.
Preferably, be arranged with stage clip 5 on the said push rod 6, said stage clip 5 is pressed against between said fixed core 4 and said moving unshakable in one's determination 7.Wherein, in the present embodiment, offer stepped hole on the said fixed core 4, said stage clip 5 is pressed against the step place of said fixed core 4.
Said fixed core 4 is arranged with skeleton 3 with said moving unshakable in one's determination 7 the outside, and said moving unshakable in one's determination 7 are slidingly connected with said skeleton 3, and the outside of said skeleton 3 is set with coil 9.Specification according to product is different, and coil can have different line footpaths, also the different numbers of turn can be arranged.According to the requirement of processing, coil can have different shapes, as circular, square etc.
The operation principle of this short circuit trip gear is: circuit is when normal operating conditions; Main circuit current is from a side inflow of coil, from the opposite side outflow of coil, the electromagnetic force that running current produced; Be not enough to overcome the counter-force of stage clip 5, it is motionless that trip gear keeps.
When short circuit current when the coil 9, moving unshakable in one's determination 7 in the short-circuit release overcomes the effect of spring 5 counter-forces under the effect of electromagnetic force, adhesive rapidly, thereby reach the purpose of rapid-releasing.
Fig. 2 is the another kind of execution mode that is used to control with the short circuit trip gear of protection switch of the present invention, and this execution mode is basic identical with the structure among the embodiment 1, and its distinctive points is:
The upper end of the said Adjusting bolt Adjusting screw 8 in the present embodiment is provided with inside flange 81; Said flange 81 positions of said Adjusting bolt Adjusting screw 8 are pressed against on said moving unshakable in one's determination 7; Rotate said Adjusting bolt Adjusting screw 8 and can make said moving unshakable in one's determination 7 to move up and down thereupon, and then regulate the air gap between the sound iron core.
In the present embodiment, the stage clip 5 that is sheathed on the said push rod 6 directly is pressed against between said fixed core 4 and said moving unshakable in one's determination 7.
In other embodiments, the said fixed core 4 among the embodiment 2 also can be offered stepped hole, said stage clip 5 is pressed against the step place of said fixed core 4.
Obviously, the foregoing description only be for explanation clearly done for example, and be not qualification to execution mode.For the those of ordinary skill in affiliated field, on the basis of above-mentioned explanation, can also make other multi-form variation or change.Here need not also can't give exhaustive to all execution modes.And conspicuous variation of being extended out thus or change still are among the protection range of the invention.
Claims (7)
1. short circuit trip gear that is used to control with protection switch, it comprises,
Yoke (1);
Fixed core (4) is fixedly set in said yoke (1) inside;
Moving (7) unshakable in one's determination; Be arranged on to reciprocating motion said yoke (1) inside; Can said relatively fixed core (4) straight line near with separate; Said moving iron core (7) is fixedly connected with push rod (6) at an end relative with said fixed core (4), and said push rod (6) is arranged in said fixed core (4) and goes up the hole of moulding and stretch out said yoke (1) outside, and the other end of said moving iron core (7) is provided with along the fixing lead of moving direction; Said lead passes the pilot hole that takes shape on the yoke plate (2) that is used to seal said yoke (1), it is characterized in that:
Be provided for regulating the Adjusting bolt Adjusting screw (8) that said moving iron core (7) moves relative to said yoke plate (2) between the lead of the pilot hole of said yoke plate (2) and said moving iron core (7); Said Adjusting bolt Adjusting screw (8) is pressed and is located on the said moving iron core (7); Its pilot hole with said yoke plate (2) is threaded, and is slidingly connected with the lead of said moving iron core (7).
2. the short circuit trip gear that is used to control with protection switch according to claim 1 is characterized in that:
The upper end of said moving iron core (7) is provided with shoulder (71), and the lead of said moving iron core (7) is for to take shape in the cylinder on the said shoulder (71), and said Adjusting bolt Adjusting screw (8) is pressed against on the said shoulder (71).
3. the short circuit trip gear that is used to control with protection switch according to claim 1 is characterized in that:
The upper end of said Adjusting bolt Adjusting screw (8) is provided with inside flange (81), and said flange (81) position of said Adjusting bolt Adjusting screw (8) is pressed against on the said moving iron core (7).
4. according to the arbitrary described short circuit trip gear that is used to control with protection switch of claim 1-3, it is characterized in that:
The outside of said fixed core (4) and said moving iron core (7) is arranged with skeleton (3), and said moving iron core (7) is slidingly connected with said skeleton (3).
5. according to the arbitrary described short circuit trip gear that is used to control with protection switch of claim 1-4, it is characterized in that:
The outside of said skeleton (3) is set with coil (9).
6. according to the arbitrary described short circuit trip gear that is used to control with protection switch of claim 1-5, it is characterized in that:
Be arranged with stage clip (5) on the said push rod (6), said stage clip (5) is pressed against between said fixed core (4) and the said moving iron core (7).
7. the short circuit trip gear that is used to control with protection switch according to claim 6 is characterized in that:
Said fixed core offers stepped hole on (4), and said stage clip (5) is pressed against the step place of said fixed core (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102330562A CN102723247A (en) | 2012-07-06 | 2012-07-06 | Short-circuit trip device for controlling and protecting switch |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102330562A CN102723247A (en) | 2012-07-06 | 2012-07-06 | Short-circuit trip device for controlling and protecting switch |
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| Publication Number | Publication Date |
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| CN102723247A true CN102723247A (en) | 2012-10-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102330562A Pending CN102723247A (en) | 2012-07-06 | 2012-07-06 | Short-circuit trip device for controlling and protecting switch |
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| Country | Link |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104810217A (en) * | 2015-04-28 | 2015-07-29 | 大全集团有限公司 | Magnetizer-added controllable electromagnetic trip device and tripping method |
| CN107833807A (en) * | 2017-11-21 | 2018-03-23 | 浙江正泰电器股份有限公司 | Electromagnetic tripping apparatus |
| CN110993428A (en) * | 2019-12-20 | 2020-04-10 | 贵州天义电器有限责任公司 | Small-sized electromagnetic operating mechanism of low-voltage vacuum contactor |
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| CN2087376U (en) * | 1990-12-24 | 1991-10-23 | 张凡 | Magnetic maintaining type electric magnet and controlled circuit |
| CN2231449Y (en) * | 1995-07-21 | 1996-07-17 | 顾文华 | Electromagnetic tripping device for circuit breaker |
| CN2699453Y (en) * | 2004-04-15 | 2005-05-11 | 杜利国 | Permanent magnet control mechanism for electric switch |
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| CN201199510Y (en) * | 2008-04-28 | 2009-02-25 | 江苏西蒙智控设备有限公司 | Electric leakage release |
| CN201780940U (en) * | 2010-06-22 | 2011-03-30 | 杭州之江开关股份有限公司 | Novel structure of electromagnet of high-voltage circuit breaker |
| CN202616163U (en) * | 2012-07-06 | 2012-12-19 | 浙江中凯科技股份有限公司 | Short circuit trip device used for controlling and protecting switch |
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2012
- 2012-07-06 CN CN2012102330562A patent/CN102723247A/en active Pending
Patent Citations (7)
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| CN2087376U (en) * | 1990-12-24 | 1991-10-23 | 张凡 | Magnetic maintaining type electric magnet and controlled circuit |
| CN2231449Y (en) * | 1995-07-21 | 1996-07-17 | 顾文华 | Electromagnetic tripping device for circuit breaker |
| CN2699453Y (en) * | 2004-04-15 | 2005-05-11 | 杜利国 | Permanent magnet control mechanism for electric switch |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104810217A (en) * | 2015-04-28 | 2015-07-29 | 大全集团有限公司 | Magnetizer-added controllable electromagnetic trip device and tripping method |
| CN104810217B (en) * | 2015-04-28 | 2017-03-08 | 南京大全电气研究院有限公司 | A kind of controllable electromagnetic trip gear for adding magnetic conductor and tripping method |
| CN107833807A (en) * | 2017-11-21 | 2018-03-23 | 浙江正泰电器股份有限公司 | Electromagnetic tripping apparatus |
| CN110993428A (en) * | 2019-12-20 | 2020-04-10 | 贵州天义电器有限责任公司 | Small-sized electromagnetic operating mechanism of low-voltage vacuum contactor |
| CN110993428B (en) * | 2019-12-20 | 2021-10-22 | 贵州天义电器有限责任公司 | Small-sized electromagnetic operating mechanism of low-voltage vacuum contactor |
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Application publication date: 20121010 |