CN201167036Y - Electric operating mechanism of a circuit breaker - Google Patents
Electric operating mechanism of a circuit breaker Download PDFInfo
- Publication number
- CN201167036Y CN201167036Y CNU2008200319483U CN200820031948U CN201167036Y CN 201167036 Y CN201167036 Y CN 201167036Y CN U2008200319483 U CNU2008200319483 U CN U2008200319483U CN 200820031948 U CN200820031948 U CN 200820031948U CN 201167036 Y CN201167036 Y CN 201167036Y
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- gear
- transmission shaft
- rolling member
- power transmission
- operating mechanism
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- 230000007246 mechanism Effects 0.000 title claims abstract description 25
- 238000005096 rolling process Methods 0.000 claims abstract description 78
- 230000005540 biological transmission Effects 0.000 claims abstract description 65
- 239000000523 sample Substances 0.000 claims description 4
- 230000000979 retarding effect Effects 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 6
- 230000033001 locomotion Effects 0.000 description 5
- 238000003466 welding Methods 0.000 description 5
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000002427 irreversible effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Abstract
An electric operating mechanism of a circuit breaker belongs to the technical field of low-voltage switch fittings. The electric operating mechanism comprises a transmission shaft, a gear arranged at the approximate lower end and used for being connected with a retarding mechanism in transmission manner and driven by the retarding mechanism, a color patch indicating dial fixed at the upper end of the transmission shaft, a cam fixed at the lower end of the transmission shaft, and a rolling element fixed on the cam. The position of the cam on the transmission shaft is arranged above the gear; the gear is pivoted on the transmission shaft; at least a rolling element groove is formed on the gear; one end of the rolling element enters the rolling element groove and is fixed with the cam, and the other end thereof protrudes out of the rolling element groove. The electric operating mechanism can ensure that the color patch indicating dial fixed on the transmission shaft shows the real switch-on status of the circuit breaker, thereby effectively avoiding accidents.
Description
Technical field
The utility model relates to a kind of electric operating mechanism of circuit-breaker, belongs to low tension switch attachment technique field.
Background technology
At disclosed document Chinese patent literature CN1138289C for example, CN2546998Y, CN2553495Y, CN2687825Y, CN2727928Y, CN2713625Y, CN2800476Y, CN2708471Y, all include electric operating mechanism of circuit-breaker among the CN2789922Y, concrete structure can be disclosed by Fig. 1, comprise power transmission shaft 2, gear 3, cam 4, colour code indicating dial 1 and rolling member 5, gear 3 is configured in the portion on the lower side of power transmission shaft 2, connect with the reducing gear transmission, cam 4 is positioned at the below of gear 3 and fixes with the lower end of power transmission shaft 2, colour code indicating dial 1 is fixed on the upper end of power transmission shaft 2, and rolling member 5 hub settings are on cam 4.The operation principle of the electric operating mechanism of circuit-breaker of said structure is as follows: be example with the electric operating, when move in the direction of the clock just the motion by the gear 3 that is meshed with output gear 6 of the output gear 6 of reducing gear drives power transmission shaft 2 and rotates, because cam 4 is fixed on the power transmission shaft 2, therefore driving cam 4 by power transmission shaft 2 rotates, and then by rolling member 5 drive slide blocks 7 motions of hub setting on cam 4, because rolling member 5 is corresponding in the elongated slot 71 on slide block 7 tops, again because circuit breaker handle is to probe in the handle groove of not shown slide block 7 bottoms, therefore when slide block 7 is mobile under the effect of rolling member 5, just circuit breaker handle is stirred and realized that electricity operates by slide block 7; With the manual operation separating brake is example, promptly, circuit breaker is operated to gate-dividing state from "on" position, the state of supposing Fig. 2 is a "on" position, the operator is as long as insert operating grip in the default lever operated hole 21, top (also can claim groove) of power transmission shaft 2, ordering about power transmission shaft 2 in a clockwise direction rotates, by with the cam 4 of power transmission shaft 2 interlock on rolling member 5 drive slide blocks 7 and move, the position of slide block 7 is promptly driven circuit breaker handle by slide block 7 and is become gate-dividing state from original "on" position by the position that Fig. 2 changes into Fig. 3.Meanwhile, along with the rotation of power transmission shaft 2, colour code indicating dial 1 also rotates thereupon, and shows gate-dividing state.The ON that is labeled among Fig. 2 and Fig. 3 represents to close a floodgate, and OFF represents separating brake.
Yet, in the application process of reality, when being short-circuited electric current, tending to occur the phenomenon of contact of breaker disjunction in time, the reason that causes this phenomenon is because contact melting welding makes the bonded to each other or title adhesion of dynamic and static contact.If circuit breaker is moving, fixed contact exists bonding, even the operator orders about power transmission shaft 2 rotations clockwise by operating grip so, attempting to make circuit breaker is gate-dividing state from previous combined floodgate, but it is because moving, fixed contact bonding, the circuit breaker handle that is insinuated in the slide block 7 will be passive, the bonding force of fixed contact is that weld force oppositely is returned to closing position, therefore circuit breaker handle can make slide block 7 move to the combined floodgate direction, slide block 7 drives rolling member 5 and does counterclockwise translation simultaneously, and then drive cams 4 by rolling member 5 and rotate counterclockwise, cam 4 is rotated counterclockwise by power transmission shaft 2 driven gears 3 and colour code indicating dial 1, finally make colour code indicating dial 1 rotate back into previous closing position, colour code indicating dial 1 is shown as combined floodgate.But, this situation only is hypothetical perfect condition, because the direction of motion of reducing gear is irreversible, the output gear 6 inevitable limiting gears 3 that is to say reducing gear rotate counterclockwise, simultaneously because as described above, gear 3, cam 4, rolling member 5 and colour code indicating dial 1 keep coaxial rotation with power transmission shaft 2, thereby limit rolling member 5 indirectly by output gear 6, cam 4, rotating counterclockwise of colour code indicating dial 1, more directly say, owing to the effect of output gear 6 is not rotated power transmission shaft 2, so colour code indicating dial 1 is not done any rotation yet, so, the perfect condition essence that above-mentioned hypothetical colour code indicating dial 1 is shown as combined floodgate is non-existent, that is to say that though colour code indicating dial 1 is in the state that shows separating brake, in fact circuit breaker still is in "on" position.
By above-mentioned explanation, can know fully, when the mutually bonding situation of dynamic and static contact appears in circuit breaker, being fixed in being used on the power transmission shaft 2 shows that the colour code indicating dial 1 that is in combined floodgate, separating brake/detain again information of opening circuit can exist mistake to show or claim and give a kind of illusion to the people, and this illusion can cause serious security incident.
Summary of the invention
Task of the present utility model be the indicated combined floodgate of colour code indicating dial, separating brake/buckle again information and the actual residing combined floodgate of circuit breaker still can be provided in the time of will providing a kind of dynamic and static contact when circuit breaker situation bonded to each other to occur, the separating brake/state of buckleing again is consistent and use the electric operating mechanism of circuit-breaker of avoiding potential safety hazard.
Task of the present utility model is finished like this, a kind of electric operating mechanism of circuit-breaker, it comprises power transmission shaft, place that be used for connecting with the reducing gear transmission and gear, the colour code indicating dial that is fixed in the power transmission shaft upper end that driven by reducing gear of the end on the lower side of power transmission shaft, the cam and that is fixed in the power transmission shaft lower end to be fixed in rolling member on the cam, described cam the position on the power transmission shaft occupy gear above; Described gear hub setting is in offering a rolling member groove at least on the power transmission shaft and on gear, an end of described rolling member probes in the rolling member groove and with cam to be fixed, and the other end then stretches out in the rolling member groove.
The hub setting mode of gear hub setting described in the utility model on power transmission shaft is any one hub setting in direct hub setting or the indirect hub setting.
Direct hub setting described in the utility model is the limiting component that the central authorities of gear are fixed by means of the bottom end face with power transmission shaft and being placed on the step of power transmission shaft lower end, is positioned the power transmission shaft lower end by means of bearing and described indirect hub setting is central authorities with gear.
Also offer a compensating groove on the gear described in the utility model, the position of this compensating groove on gear is corresponding with the rolling member groove, and shape is to be tending towards corresponding to the rolling member groove, and wherein: the width of rolling member groove is suitable with the external diameter of rolling member.
The center of circle that corresponds to gear described in the utility model is that benchmark keeps symmetry.
Rolling member groove described in the utility model is crooked.
Described in the utility model being bent into is convexly curved.
Rolling member described in the utility model is roller or bearing.
Rolling member described in the utility model is a roller.
Reducing gear described in the utility model comprises reducing motor and output gear, output gear be fixed on the power output shaft of reducing motor and with described gears engaged, wherein: reducing motor is an one-way motors.
The advantage of the technical scheme that the utility model is recommended is: owing to the position of the cam that is positioned at the gear below in the prior art has been changed to the top of gear, and on gear, offered and be used for the rolling member groove that the confession rolling member probes into, therefore, circular translational before and after rolling member can be done in the rolling member groove, avoided the irreversible control of reducing gear to gear, get around the gear driven cam and then rotate by rolling member by the cam driven power transmission shaft, so when the manual operation power transmission shaft, for example make circuit breaker when "on" position becomes gate-dividing state, even circuit breaker is moving, there is situation bonded to each other in fixed contact and rolling member is withdrawn into combined floodgate through the transition of slide block, so because rolling member can drive cam rotation, rotate by the cam driven power transmission shaft again, thereby the colour code indicating dial that can guarantee to be fixed on the power transmission shaft shows the residing real "on" position of circuit breaker, can avoid the generation of accident effectively.
Description of drawings
Fig. 1 is the structure chart of the electric operating mechanism of circuit-breaker in the prior art.
Fig. 2 is the schematic diagram of residing closing position after Fig. 1 structure is implemented to close a floodgate to circuit breaker.
Fig. 3 is for being transformed into the schematic diagram of separating brake position by the closing position of Fig. 2.
Fig. 4 is a specific embodiment structure chart of electric operating mechanism of circuit-breaker of the present utility model.
The schematic diagram that Fig. 5 matches with circuit breaker for Fig. 4 structure.
Fig. 6 is in the schematic diagram of closing position for Fig. 4 structure under the manual state.
Fig. 7 is for being transformed into the closing position of Fig. 6 by manual operation the schematic diagram of separating brake position.
Fig. 8 is in the separating brake position view for Fig. 4 structure under the motoring condition.
Fig. 9 is for being transformed into the separating brake position of Fig. 8 by electric operating the schematic diagram of closing position.
Embodiment
By following description, will help to understand the utility model more, but embodiment should not be used for limiting the utility model, any pro forma modification or change and all should belong to technical scheme category disclosed in the utility model to embodiment.
Ask for an interview Fig. 4, the fixing colour code indicating dial 1 in the upper end of power transmission shaft 2, and be not subjected to illustrating the lever operated hole 21 of restriction at the top of power transmission shaft 2 preset shape, drive power transmission shaft 2 in the lever operated hole 21 and rotate so that when manual operation, handle 10 (also can claim key) is inserted into.The lower end configuration cam 4 and the gear 3 of power transmission shaft 2, wherein: be in corresponding to the top and the power transmission shaft 2 of gear 3 cam 4 fixing, and gear 3 is nested with on the step 22 of power transmission shaft 2 lower ends by its centre bore 33 and spacing with limiting component 34, specifically be in bottom and power transmission shaft 2 welding or riveted joint with limiting component 34 corresponding to gear 3.Above-mentionedly the mode that gear 3 is placed on the power transmission shaft 2 is referred to as direct hub setting by limiting component 34, if and abandon limiting component 34 and in centre bore 33, dispose bearing, by bearing gear 3 is set on the power transmission shaft 2, so this mode is referred to as indirect hub setting.Gear 3 meshes with the output gear 6 of reducing gear, and offers a rolling member groove 31 that is convexly curved on gear 3, and alleged here arc is just as banana-shaped or claim crescent.In order to ensure the balance of gear 3, on gear 3 and offer corresponding to rolling member groove 31 positions a shape preferably with rolling member groove 31 corresponding to compensating grooves 32, said here correspondence is meant that the center of circle with gear 3 is that benchmark makes compensating groove 32 and rolling member groove 31 keep symmetry.Rolling member 5 both can use roller, also can adopt bearing, and present embodiment is selected and used roller.The upper end of rolling member 5 is insinuated in the rolling member groove 31, and with rolling member 5 central authorities the narrow roller bearing that contracts 51 be presented in the roller bearing hole 41 on the cam 4, it is fixing that rolling member 5 is realized with cam 4, the lower end of rolling member 5 stretches out in rolling member groove 31 and is received in the default elongated slot 71 in slide block 7 tops, motion drive slide block 7 by rolling member 5 slides on slider waveguide rod 73, is used for driving the circuit breaker handle 81 of the circuit breaker 8 of the circuit breaker handle groove 72 that is insinuated into slide block 7 bottoms.For above mentioned rolling member groove 31, preferred scheme is that the width of rolling member groove 31 and the external diameter of rolling member 5 are adapted, and uses and guarantees that rolling member 5 moves to the other end from an end of rolling member groove 31 freely.The air line distance of rolling member groove 31 should satisfy the start distance that is able to circuit breaker handle 81 is transformed into from closing position separating brake position (vice versa).
Ask for an interview Fig. 5, the structure of Fig. 4 is installed under user mode in the housing 20, on housing 20, offer colour code form 20a, when red, white, the green color of representing combined floodgate, dropout, separating brake respectively on the colour code indicating dial 1 is a colour code when occurring, just pointed out the corresponding state of circuit breaker to the user in colour code form 20a.Housing 20 connects with the cap 82 of circuit breaker 8.Be used to order about the reducing motor 9 that gear 3 rotates and be installed in support 91, be fixed on the power output shaft of reducing motor 9 as the output gear 6 of reducing gear as reducing gear.
See Fig. 6 and Fig. 7 and in conjunction with Fig. 5, when operating personnel adopt manual operation to circuit breaker 8 separating brakes, insert handle groove handle hole 21 and dextrorotation fixed handle 10 with handle 10, power transmission shaft 2 rotates, driving cam 4 by power transmission shaft 2 clockwise rotates, drive rolling member 5 simultaneously and do clockwise translation, order about slide block 7 to separating brake direction moving linearly by rolling member 5, thereby the circuit breaker handle 81 that will be probed into the circuit breaker 8 in the circuit breaker handle groove 72 by slide block 7 is transformed into separating brake position shown in Figure 7 from closing position shown in Figure 6, the colour code indicating dial 1 indication gate-dividing state of this moment.
Moving when the contact mechanism of circuit breaker 8, fixed contact has been in bonding or has claimed the melting welding state, because circuit breaker handle 81 is subjected to the reaction of weld force and returns back to (being returned to) closing position, therefore circuit breaker handle 81 can drive slide block 7 to combined floodgate direction moving linearly, yet because the existence of the rolling member groove 31 on the gear 3, can make rolling member 5 be subjected to the active force of slide block 7 and in rolling member groove 31, freely do the counterclockwise translation of circumference (rolling member 5 of this moment is positioned at the upper end of elongated slot 71, when slide block 7 moves to the combined floodgate direction, rolling member 5 is done counterclockwise translation), therefore rolling member 5 can not be restricted because of the irreversible effect of reducing motor 9, to drive cam 4 rotates counterclockwise, driving power transmission shaft 2 by cam 4 at last rotates, make the colour code indicating dial 1 on the power transmission shaft 2 rotate back into the state that shows combined floodgate, thereby remind operator's circuit breaker need unusually may take place to detect, use and guarantee safety.
See Fig. 8 and Fig. 9 and in conjunction with Fig. 5, promptly handle circuit breaker to gate-dividing state by electronic by the reducing motor 9 of reducing gear, specifically: when reducing motor 9 receives sub-gate signal and works, clockwise rotate through output gear 6 driven gears 3, gear 3 drives cam 4 by rolling member 5, when cam 4 drives power transmission shaft 2 rotations, drive slide blocks 7 to the motion of separating brake direction by rolling member 5, drive circuit breaker handle 81 to separating brake position shown in Figure 8 by slide block 7 at last.If this moment, there was melting welding in circuit breaker 8, then circuit breaker handle 81 can return back to closing position, and can drive slide block 7 moves to the combined floodgate direction, slide block 7 drive rolling members 5 continue to do clockwise translation, and (rolling member 5 of this moment is positioned at the lower end of elongated slot 71, when slide block 7 moves to the combined floodgate direction, rolling member 5 is done clockwise translation), rolling member 5 moves to position shown in Figure 9, thereby driving cam 4 and gear 3 clockwise rotates,, make colour code indicating dial 1 show "on" position after power transmission shaft 2 drives colour code indicating dials 1.
The ON and the OFF that are shown among above-mentioned Fig. 6 to Fig. 9 represent respectively to close a floodgate and separating brake.
In sum, technical scheme disclosed in the utility model has remedied existing deficiency in the prior art, reach its intended purposes, embodied the technique effect that the "on" position of the demonstration that still can make colour code indicating dial 1 when there is the melting welding situation in circuit breaker and circuit breaker reality is consistent.
Claims (10)
1, a kind of electric operating mechanism of circuit-breaker, it comprises power transmission shaft (2), place that be used for connecting with the reducing gear transmission and gear (3), the colour code indicating dial (1) that is fixed in power transmission shaft (2) upper end that driven by reducing gear of the end on the lower side of power transmission shaft (2), the cam (4) and that is fixed in power transmission shaft (2) lower end to be fixed in rolling member (5) on the cam (4), and it is characterized in that: the position of described cam (4) on power transmission shaft (2) occupy the top of gear (3); A rolling member groove (31) is gone up and offered at least to described gear (3) hub setting in power transmission shaft (2) on gear (3), one end of described rolling member (5) probes in the rolling member groove (31) and with cam (4) and fixes, and the other end then stretches out in rolling member groove (31).
2, electric operating mechanism of circuit-breaker according to claim 1 is characterized in that the hub setting mode of described gear (3) hub setting on power transmission shaft (2) is any one hub setting in direct hub setting or the indirect hub setting.
3, electric operating mechanism of circuit-breaker according to claim 2, it is characterized in that: described direct hub setting is the limiting component (34) that the central authorities of gear (3) are fixed by means of the bottom end face with power transmission shaft (2) and being placed on the step (22) of power transmission shaft (2) lower end, is positioned power transmission shaft (2) lower end by means of bearing and described indirect hub setting is central authorities with gear (3).
4, electric operating mechanism of circuit-breaker according to claim 1, it is characterized in that also offering on the described gear (3) compensating groove (32), the position of this compensating groove (32) on gear (3) is corresponding with rolling member groove (31), and shape is to be tending towards corresponding to rolling member groove (31), and wherein: the width of rolling member groove (31) is suitable with the external diameter of rolling member (5).
5, electric operating mechanism of circuit-breaker according to claim 4 is characterized in that the described center of circle that corresponds to gear (3) is that benchmark keeps symmetry.
6, electric operating mechanism of circuit-breaker according to claim 4 is characterized in that described rolling member groove (31) is crooked.
7, electric operating mechanism of circuit-breaker according to claim 6 is characterized in that described being bent into is convexly curved.
8,, it is characterized in that described rolling member (5) is roller or bearing according to claim 1 or 4 described electric operating mechanism of circuit-breaker.
9, electric operating mechanism of circuit-breaker according to claim 8 is characterized in that described rolling member (5) is a roller.
10, electric operating mechanism of circuit-breaker according to claim 1, it is characterized in that described reducing gear comprises reducing motor (9) and output gear (6), output gear (6) be fixed on the power output shaft of reducing motor (9) and with described gear (3) engagement, wherein: reducing motor (9) is an one-way motors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200319483U CN201167036Y (en) | 2008-03-04 | 2008-03-04 | Electric operating mechanism of a circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200319483U CN201167036Y (en) | 2008-03-04 | 2008-03-04 | Electric operating mechanism of a circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201167036Y true CN201167036Y (en) | 2008-12-17 |
Family
ID=40192427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200319483U Expired - Lifetime CN201167036Y (en) | 2008-03-04 | 2008-03-04 | Electric operating mechanism of a circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201167036Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101252046B (en) * | 2008-03-04 | 2010-06-02 | 常熟开关制造有限公司(原常熟开关厂） | Electric operating mechanism of circuit-breaker |
| CN111900055A (en) * | 2020-09-10 | 2020-11-06 | 乐清市建波电气有限公司 | Electric operating mechanism |
-
2008
- 2008-03-04 CN CNU2008200319483U patent/CN201167036Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101252046B (en) * | 2008-03-04 | 2010-06-02 | 常熟开关制造有限公司(原常熟开关厂） | Electric operating mechanism of circuit-breaker |
| CN111900055A (en) * | 2020-09-10 | 2020-11-06 | 乐清市建波电气有限公司 | Electric operating mechanism |
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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: 20081217 Effective date of abandoning: 20080304 |