CN202473817U - Uncapping releasing protection device of DC circuit breaker having fuse - Google Patents
Uncapping releasing protection device of DC circuit breaker having fuse Download PDFInfo
- Publication number
- CN202473817U CN202473817U CN2011204954129U CN201120495412U CN202473817U CN 202473817 U CN202473817 U CN 202473817U CN 2011204954129 U CN2011204954129 U CN 2011204954129U CN 201120495412 U CN201120495412 U CN 201120495412U CN 202473817 U CN202473817 U CN 202473817U
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- CN
- China
- Prior art keywords
- circuit breaker
- push rod
- fuse
- uncapping
- dropout
- 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.)
- Expired - Lifetime
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Abstract
The utility model provides an uncapping releasing protection device of a DC circuit breaker having a fuse. The uncapping releasing protection device of the DC circuit breaker having the fuse is characterized in that the uncapping releasing protection device of the DC circuit breaker having the fuse includes a support. A push rod capable of moving up and down is arranged on the support. One end of an elastic mechanism is fixed while the other end is connected to the push rod. The lower end of the push rod is locked by a fuse cap used for covering the fuse. The upper end of the push rod is arranged below a releasing board of the circuit breaker. And a gap is left between the push rod and the releasing board, thereby enabling the releasing board to rotate normally. When the fuse cap is opened, the end of the push rod is released from the fuse cap under an effect of a restoring force of the elastic mechanism to move upward. After the push rod moves upward, the upper end of the push rod pushes the releasing board to make the circuit breaker release. By adopting the uncapping releasing protection device of the DC circuit breaker having the fuse provided by the utility model, the circuit breaker can be released only by opening the fuse cap covering the fuse when the fuse needs to be replaced. And the circuit breaker can not be switched again until a new fuse is installed and the fuse cap is covered, thereby guaranteeing the safety of operating workers fully.
Description
Technical field
The utility model relates to a kind of trip gear of uncapping, and relates in particular to a kind of trip gear of uncapping of direct current integrally fused circuit breaker, belongs to electrical technology field.
Background technology
The direct current integrally fused circuit breaker is applicable in the direct current power system, reaches the usefulness of making frequently not switch on and off circuit in normal working conditions as the overload of distributing electric energy and power consumption equipment, short-circuit protection.
As shown in Figure 1, the direct current integrally fused circuit breaker is made up of circuit breaker and a current limiting fuse that is installed in circuit breaker inside, and circuit breaker is responsible for disjunction load and overload protection, and fuse is responsible for short-circuit protection, and circuit breaker breaks off forming after fuse blows isolates.
Under normal circumstances, through the closed or disconnection of direct current integrally fused circuit breaker, reach the purpose of power supply, power failure and change-over circuit.When local abnormal conditions appearred in electrical network, the direct current integrally fused circuit breaker can automatically break off load from electrical network, during overload by the circuit breaker disjunction, during short circuit by fuse blows, thereby guarantee the safety of personnel and equipment.
In electric wiring, general fuse is connected on by the prime of protection electrical equipment, when maintenance, inspection, replacing fuse, be by the safety regulations requirement, and level power supply in the cut-out never allows charged contact fuse.Level power supply is to be implemented by operating personnel and cut off upward, can not guarantee to be perfectly safe, and has potential safety hazard.
For fear of the unsafe factor that manual operation brings, when big short circuit current fault takes place in the line, make circuit breaker tripping simultaneously through control unit after the fuse blows, promptly cut off and go up level power supply, form on electric and isolate.Though circuit breaker is threaded off, at this moment circuit breaker still comes to detain again, closes a floodgate, and still has unsafe factor, and only guaranteed circuit breaker is in trip status, perhaps prevents circuit breaker by false switching, just can guarantee safety.Yet in present direct current integrally fused circuit breaker, do not have a kind of device and can guarantee that circuit breaker can be in trip status all the time in the process of contact (safeguarding, check, change installation etc.) fuse.
Summary of the invention
The purpose of the utility model provides and a kind ofly guarantees that in the installation process of fuse, circuit breaker is in the device of trip status all the time.
In order to achieve the above object, the technical scheme of the utility model has provided a kind of trip gear of uncapping, and it is characterized in that: comprise bearing; On bearing, be provided with push rod moving up and down, an end of elastic mechanism is fixed, and the other end is connected on the push rod; Block through the fuse cover that is used to cover fuse the upper end of push rod; The lower end of push rod is positioned at the below of the dropout plate of circuit breaker, but and and the dropout plate between leave the gap and make dropout plate normal rotation, after fuse cover is opened; The lower end of push rod throw off under the effect of elastic mechanism restoring force fuse cover and on move, move its upper end, back on the push rod and promote dropout plate and make circuit breaker tripping.
Preferably, on said bearing, be provided with in order to limit the guiding mechanism of said pushrod movement track.
Preferably, said guiding mechanism comprises at least two axles, and axle is fixed on the said bearing, and axle is passed at the middle part of said push rod.
Preferably, an end of said elastic mechanism is fixed on the described axle, and the other end links to each other with said push rod.
Preferably, said elastic mechanism is a spring.
Preferably, said axle is fixed on the said bearing through nut.
Preferably, at said outer shaft sleeve back-up ring is arranged, a side of said push rod is close to said bearing, and back-up ring is pressed close to the opposite side of push rod.
Behind the device that employing the utility model provides; When needs are changed fuse; As long as open the fuse cover that covers fuse, circuit breaker will be threaded off, and circuit breaker can't fasten lock again; Could fasten lock up to installing on the fuse cover again behind the fuse cover, fully guarantee operating personnel's safety.
Description of drawings
Fig. 1 is a direct current integrally fused circuit breaker schematic diagram;
A kind of trip gear side sectional view of uncapping that Fig. 2 provides for the utility model;
Fig. 3 is the direct current integrally fused circuit breaker internal structure sketch map behind employing the utility model;
Fig. 4 is the structural representation at working condition lower push-rod and dropout plate, fuse cover.
Embodiment
For making the utility model more obviously understandable, now with a preferred embodiment, and conjunction with figs. elaborates as follows.
A kind of trip gear of uncapping as shown in Figure 2, that the utility model provides, the afterbody that comprises 2, the first 5 and second 6 of bearings are located in the bearing 2 and are fixing through nuts 3.The middle part of push rod 1 moving up and down is passed first 5 and second 6 respectively.On first 5 and second 6, be with a back-up ring 4 respectively, the both sides of push rod 1 are close to bearing 2 and back-up ring 4 respectively.One end of spring 7 is fixed on second 6, and the other end connects and links to each other with push rod 1.
As shown in Figure 3, the trip gear 12 of uncapping that the utility model provides is placed in the pedestal of circuit breaker 10, in the special cell, covers with fuse cover 9 below fuse 8 is placed on.Under this state; In conjunction with Fig. 4; Fuse cover 9 blocks the lower end of push rod 1, and the upper end of push rod 1 is positioned at the below of the dropout plate 11 of circuit breaker 10, but and and dropout plate 11 between leave the gap and make dropout plate 11 normal rotation; The operating mechanism that is circuit breaker 10 can be detained again, thread off, and circuit breaker 10 is in normal operating conditions.
When needs are changed fuse, fuse cover 9 is opened, the lower end of push rod 1 throw off the effect of the restoring force of spring 7 under fuse cover 9 and on move, it promotes dropout plate 11 and makes circuit breaker 10 dropouts in the upper end in addition to move the back on the push rod 1.
Though the utility model is described with reference to the above embodiments; But those of ordinary skill in the art; Will be appreciated that above embodiment is used for explaining the utility model; Should understand and wherein can make variations and modifications and do not break away from the utility model in a broad sense; So be not as qualification, as long as in the connotation scope of the utility model, to the variation of above-described embodiment, the protection range that distortion all will fall into the utility model claim to the utility model.
Claims (7)
1. the dropout protective device of uncapping of a direct current integrally fused circuit breaker; It is characterized in that: comprise bearing (2); On bearing (2), be provided with push rod moving up and down (1), an end of elastic mechanism is fixed, and the other end is connected on the push rod (1); One end of push rod (1) blocks through the fuse cover (9) that is used to cover fuse (8); The upper end of push rod (1) is positioned at the below of the dropout plate (11) of circuit breaker (10), and and dropout plate (11) between leave the gap make dropout plate (11) but normal rotation, after fuse cover (9) is opened; The lower end of push rod (1) throw off under the effect of elastic mechanism restoring force fuse cover (9) and on move, move its upper end, back on the push rod (1) and promote dropout plate (11) circuit breaker (10) is threaded off.
2. the dropout protective device of uncapping of a kind of direct current integrally fused circuit breaker as claimed in claim 1 is characterized in that: on said bearing (2), be provided with in order to limit the guiding mechanism of said push rod (1) movement locus.
3. the dropout protective device of uncapping of a kind of direct current integrally fused circuit breaker as claimed in claim 2, it is characterized in that: said guiding mechanism comprises at least two axles, and axle is fixed on the said bearing (2), and axle is passed at the middle part of said push rod (1).
4. the dropout protective device of uncapping of a kind of direct current integrally fused circuit breaker as claimed in claim 3 is characterized in that: an end of said elastic mechanism is fixed on the described axle, and the other end links to each other with said push rod (1).
5. like the dropout protective device of uncapping of claim 1 or 4 described a kind of direct current integrally fused circuit breakers, it is characterized in that: said elastic mechanism is spring (7).
6. the dropout protective device of uncapping of a kind of direct current integrally fused circuit breaker as claimed in claim 3 is characterized in that: said axle is fixed on the said bearing (2) through nut (3).
7. the dropout protective device of uncapping of a kind of direct current integrally fused circuit breaker as claimed in claim 3; It is characterized in that: back-up ring (4) is arranged at said outer shaft sleeve; One side of said push rod (1) is close to said bearing (2), and back-up ring (4) is pressed close to the opposite side of push rod (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204954129U CN202473817U (en) | 2011-12-02 | 2011-12-02 | Uncapping releasing protection device of DC circuit breaker having fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204954129U CN202473817U (en) | 2011-12-02 | 2011-12-02 | Uncapping releasing protection device of DC circuit breaker having fuse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202473817U true CN202473817U (en) | 2012-10-03 |
Family
ID=46921960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204954129U Expired - Lifetime CN202473817U (en) | 2011-12-02 | 2011-12-02 | Uncapping releasing protection device of DC circuit breaker having fuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202473817U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102522279A (en) * | 2011-12-02 | 2012-06-27 | 上海电器科学研究院 | Uncap releasing protecting device of direct current belt fuse breaker |
-
2011
- 2011-12-02 CN CN2011204954129U patent/CN202473817U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102522279A (en) * | 2011-12-02 | 2012-06-27 | 上海电器科学研究院 | Uncap releasing protecting device of direct current belt fuse breaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121003 |