CN1331481A - Knife switch special for double-safety motor - Google Patents
Knife switch special for double-safety motor Download PDFInfo
- Publication number
- CN1331481A CN1331481A CN 00104422 CN00104422A CN1331481A CN 1331481 A CN1331481 A CN 1331481A CN 00104422 CN00104422 CN 00104422 CN 00104422 A CN00104422 A CN 00104422A CN 1331481 A CN1331481 A CN 1331481A
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- CN
- China
- Prior art keywords
- flap
- release
- knife switch
- motor
- under
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 21
- 229910052742 iron Inorganic materials 0.000 claims description 8
- 230000000694 effects Effects 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 6
- 230000009977 dual effect Effects 0.000 claims description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000012634 fragment Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
A special knife switch for dual-safety motor with phase failure protection function is composed of a switch base, a unique release, a pressing rod and an electromagnet.
Description
The present invention relates to a kind of appliance switch, especially a kind of double-safety knife switch for electric machine.
As everyone knows, knife switch can not be done open phase protection.We know: the fusible link of motor is to mate by the starting current value more than or equal to motor, and the starting current of motor generally is 2.5-3.5 times of its rated current, in this case, if have a phase fusible link to blow or other reason phase failure, the staff is absent from the scene again, this moment motor burn-out rate more than 80%, but and major accident such as fire hazard; Also have a kind of situation in addition, be exactly sudden power again suddenly the incoming call, the motor accidental activation and endanger the staff life security and cause any property loss.
The purpose of this invention is to provide a kind of double-safety knife switch for electric machine; it not only has the protective value of common knife switch; and can guarantee automatic shutdown circuit under the situation of phase failure outage, thereby comprehensively, reliable protection motor and staff's life security and property safety.
The object of the present invention is achieved like this, in switch base: go up pile crown, plug-in strip inserted sheet, release, fusible link, iron-core coil, be connected with motor behind the pile crown polyphone down.When male contact handle is closed, handle drives depression bar with release moving contact, fixed contact closure, and through the plug-in strip inserted sheet, the dynamic and static contact of release, fusible link, iron-core coil flow into motor to source current, at this moment from last pile crown
The iron adhesive, the release strut props up flap under spring action, and double-safety knife switch for electric machine is in normal operating conditions.When motor because of fusible link blow one mutually or and other reason phase failure and having a power failure suddenly, the iron-core coil dead electricity,
Thereby iron is pushed the release thimble open and is driven the release pull bar under spring action, the release strut is pulled away from the release flap, and the release flap is upspring under spring action, drives the release moving contact and upsprings, thereby cut off the electricity supply the complete dead electricity of motor.When needs were operated a switch, male contact handle drew back rotation, drove down-pressed pole rotation on plug-in strip inserted sheet, the release, and the plug-in strip inserted sheet leaves plug base, and iron-core coil and motor all cut off the power supply.
Owing to adopt such scheme, can under the phase failure and situation about having a power failure suddenly, cut off the electricity supply protection motor and staff's life security and property safety automatically.Double-safety knife switch for electric machine is cheap, practicality is reliable.
The present invention is further described below in conjunction with accompanying drawing:
Figure a-1 is a double-safety knife switch for electric machine structure full figure.
Among the Figure a-2 is a double-safety knife switch for electric machine profile construction front view. figure: 1. electrical apparatus release strut 2. strut back-moving springs 3. electrical apparatus release flaps 4. electrical apparatus release flap springs 5. electrical apparatus release flap square shafts 6. rotary shaft rack 7.A.B.C three-phase moving contact shell fragments fixedly gong silk 8.A.B.C three-phase moving contact shell fragment 9.A.B.C three-phase moving contact 10.A.B.C three-phase static contact 11.A.B.C three-phase fusing silk gong silk 12.A.B.C three-phase fusing silk 13. switch epimere shells 14. shells fixedly gong cap 15. electrical apparatus release pull bars, dotted line represent 16. switch pedestal 17.A.B.C three-phase fusing silk gong silks and tri-phase iron core coil pile crown gong silk 18. electrical apparatus release upperpush rods 19. electrical apparatus release down-pressed poles 20. depression bar back-moving spring 21.A.B.C three-phase moving contact power supply lines 22. switch hypomere shells 23. shells fixedly gong cap 24. electrical apparatus release thimbles sit 25. electrical apparatus release thimbles, 26. pins and sit sheet 27. electrical apparatus release needle stands and rotate square shaft 28.A.B.C three-phase
Iron 29.A.B.C tri-phase iron core 30.A.B.C three-phase
The fixing pile crown on gong bolt 41. down-pressed pole axles 42. switches of pile crown gong silk 36.A.B.C tri-phase iron core support 37. male contact handle 38.A.B.C three-phase plug-in strip inserted sheet 39.A.B.C three-phase plug-in strip plug bases 40. shells under lead-out wire 34.A.B.C three-phase lead-out wire gong silk 35. switches under the lead-out wire 32.A.B.C three-phase coil 33.A.B.C three-phase coil on the iron back-moving spring 31.A.B.C tri-phase iron core coil.
In shown in the figure a-2:
One, when closing plug-in strip, male contact handle (37) is depressed, driving upperpush rod (18) and down-pressed pole (19) depresses off line device flap (3), release strut (1) props up flap under the effect of release strut back-moving spring (2), moving contact (9) and fixed contact (10) closure, electric current passes through moving contact (9), fixed contact (10), fusible link (12), iron-core coil (32), flows to load motor by moving contact power supply line (21)
Iron (28) adhesive, this moment, double-safety knife switch for electric machine was in normal operating conditions.
Two, blow one mutually or other reason phase failure and having a power failure suddenly because of fusible link when motor, coil (32) dead electricity,
Iron exists
Flick under the effect of iron back-moving spring (30), push release thimble (25) and thimble open and sit (24), make thimble seat (24) and pin sit sheet (26) and go to the A point around release needle stand rotation square shaft (27), release pull bar (16) also moves, release strut (1) moves down into the c point in the pulling of pull bar (15), break away from flap (3), release flap (3) under the effect of release flap spring (4) bullet to the B point, cause moving contact (9) and fixed contact (10) to disconnect, thereby whole knife switch is all disconnected, the motor outage.
Three, when needs are operated a switch, male contact handle (37) drives release upperpush rod (18), down-pressed pole (19) rotates, go to when touching the position that release flap (3) D orders, down-pressed pole (19) must rotate around down-pressed pole axle (41), after hindering through release flap (3) smoothly, reset rapidly under the effect of down-pressed pole back-moving spring (20), the outage of dual fail-safe knife switch is also got ready for closing a floodgate next time simultaneously automatically.
The double-safety knife switch for electric machine core volume is little, and motor manufacturer can make with the silicon steel sheet leftover pieces, changing waste into valuables and electric current that coil flows through is bigger, coil only needs around several circles, tens circles are just much of that at most, and visible cost is not high, is the economical and reliable electric equipment products.
Claims (4)
1, the special-purpose open phase protection dual fail-safe of a kind of motor knife switch is characterized in that: in switch base, and last pile crown, plug-in strip plug base, plug-in strip inserted sheet, release, fusible link, iron-core coil, following pile crown and motor, order is electrically connected.Thereby release moves under the control of upper and lower depression bar, electromagnet and makes the closed or disconnection of moving contact fixed contact.
2, according to claim 1 described double-safety knife switch for electric machine.It is characterized in that: release is that flap structure, moving contact are fixed on the flap, and strut is connected with pull bar, props up flap under spring action; Flap is upspring under spring action.
3, according to claim 1 described double-safety knife switch for electric machine, it is characterized in that: upper and lower depression bar moves with male contact handle, and down-pressed pole can a direction rotate, and resets under the effect of back-moving spring.
4, according to claim 1 described double-safety knife switch for electric machine.It is characterized in that: electromagnet iron outage back resets under the effect of back-moving spring, drives pull bar thus, and pulling release strut breaks away from flap, causes flap to be upspring and resets, thereby cut off the electricity supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00104422 CN1331481A (en) | 2000-06-24 | 2000-06-24 | Knife switch special for double-safety motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00104422 CN1331481A (en) | 2000-06-24 | 2000-06-24 | Knife switch special for double-safety motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1331481A true CN1331481A (en) | 2002-01-16 |
Family
ID=4577308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00104422 Pending CN1331481A (en) | 2000-06-24 | 2000-06-24 | Knife switch special for double-safety motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1331481A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103872652A (en) * | 2014-03-13 | 2014-06-18 | 李和坤 | Automatic protection three-phase knife switch of motor |
| CN107785204A (en) * | 2016-08-05 | 2018-03-09 | 唐园梅 | Electronic knife switch |
-
2000
- 2000-06-24 CN CN 00104422 patent/CN1331481A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103872652A (en) * | 2014-03-13 | 2014-06-18 | 李和坤 | Automatic protection three-phase knife switch of motor |
| CN107785204A (en) * | 2016-08-05 | 2018-03-09 | 唐园梅 | Electronic knife switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |