CN101770904B - Operating mechanism of circuit breaker and its shaft connection system - Google Patents
Operating mechanism of circuit breaker and its shaft connection system Download PDFInfo
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- CN101770904B CN101770904B CN2008102081205A CN200810208120A CN101770904B CN 101770904 B CN101770904 B CN 101770904B CN 2008102081205 A CN2008102081205 A CN 2008102081205A CN 200810208120 A CN200810208120 A CN 200810208120A CN 101770904 B CN101770904 B CN 101770904B
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- rotating shaft
- circuit breaker
- roller
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Abstract
The invention discloses a rotating shaft connection system of an operating mechanism of a circuit breaker, which is connected with a main shaft of the circuit breaker, a cantilever positioned on the main shaft and a four-bar mechanism of the circuit breaker. The rotating shaft connection system comprises a connecting pin, a connecting roller, a rotating shaft and a cam, wherein the connecting pin is connected with the cantilever positioned on the main shaft; the connecting roller is sleeved with the connecting pin; the cam is connected with the rotating shaft and rotates around the rotating shaft; one side of the cam is connected with the four-bar mechanism, and the other side of the same contacts with the connecting roller. In the invention, contact pressure is transferred to the main shaft and four bars by the cantilever of the main shaft, the main shaft bears a large part of the contact pressure, and the four bars bear a small part of the contact pressure so that the releasing force of the operating mechanism can become very small, the original very large releasing force of the operating mechanism is greatly reduced, the strength of the operating mechanism isimproved and the service life of the operating mechanism is prolonged.
Description
Technical field
The present invention relates to the low-voltage electrical apparatus field, more particularly, relate to circuit breaker operation mechanism.
Background technology
Existing circuit breaker operating mechanism, revolving contact directly are connected on the main shaft, lean on the cantilever of main shaft directly to be connected on the quadric chain then.Quadric chain leans on the ability of releasing of the energy-stored spring of mechanism's energy storage lever to turn to closing position.And this mechanism is used for the contact like Direct Action Type, the contact pressure that four connecting rods are born increases greatly, thereby has increased tripping force greatly, has influenced the intensity and the useful life of operating mechanism.
Summary of the invention
The present invention aims to provide a kind of device that can effectively reduce the tripping force impact, the intensity and the useful life that are beneficial to improve operating mechanism.
According to an aspect of the present invention, the connected system of the rotating shaft in a kind of circuit breaker operation mechanism is provided, this rotating shaft connected system connects the quadric chain of main shaft, the cantilever on the main shaft and the circuit breaker of circuit breaker, and this rotating shaft connected system comprises:
Connecting pin is connected in the cantilever on the main shaft;
Connect roller, be enclosed within on the connecting pin;
Rotating shaft;
Cam is connected in rotating shaft and rotates around the axis;
Wherein, a side of cam connects quadric chain, the opposite side of cam be connected roller and contact.
Above-mentioned cam is circular-arc with a side that is connected the roller contact, when cam rotates around the shaft, has only all the time on the cam a bit to contact with being connected roller, forms the phase tangent plane.Tripping force when this phase tangent plane reduces the circuit breaker operation mechanism dropout.
According to a further aspect in the invention, a kind of circuit breaker operation mechanism is provided, comprises the rotating shaft connected system, this rotating shaft connected system connects the quadric chain of main shaft, the cantilever on the main shaft and the circuit breaker of circuit breaker, and the rotating shaft connected system comprises:
Connecting pin is connected in the cantilever on the main shaft;
Connect roller, be enclosed within on the connecting pin;
Rotating shaft;
Cam is connected in rotating shaft and rotates around the axis;
Wherein, a side of cam connects quadric chain, the opposite side of cam be connected roller and contact.
Above-mentioned cam is circular-arc with a side that is connected the roller contact, when cam rotates around the shaft, has only all the time on the cam a bit to contact with being connected roller, forms the phase tangent plane.Tripping force when this phase tangent plane reduces the circuit breaker operation mechanism dropout.
In one embodiment, this phase tangent plane reduces to act on when circuit breaker operation mechanism is threaded off the tripping force on the dropout semiaxis.
Contact pressure is delivered on main shaft and four connecting rods by the main shaft cantilever among the present invention; And main shaft has born most contact pressure; The fraction contact pressure is born by four connecting rods; Make the tripping force of operating mechanism can become very little, greatly reducing originally, very big mechanism's tripping force has improved mechanism's intensity and useful life.
Description of drawings
Above-mentioned and other characteristic, character and advantage of the present invention will become more obvious through the description below in conjunction with accompanying drawing and embodiment, in the accompanying drawings, identical Reference numeral is represented identical characteristic all the time, wherein:
Fig. 1 has disclosed the structure chart of the circuit breaker operation mechanism with rotating shaft connected system of invention;
Fig. 2 has disclosed cam and has been connected the structure chart that roller cooperates.
Embodiment
The present invention provides the connected system of the rotating shaft in a kind of circuit breaker operation mechanism, and this rotating shaft connected system connects the quadric chain of main shaft, the cantilever on the main shaft and the circuit breaker of circuit breaker, and this rotating shaft connected system comprises:
Connecting pin is connected in the cantilever on the main shaft;
Connect roller, be enclosed within on the connecting pin;
Rotating shaft;
Cam is connected in rotating shaft and rotates around the axis;
Wherein, a side of cam connects quadric chain, the opposite side of cam be connected roller and contact.
Wherein, this cam is circular-arc with a side that is connected the roller contact, when cam rotates around the shaft, has only all the time on the cam a bit to contact with being connected roller, forms the phase tangent plane.Tripping force when this cam reduces the circuit breaker operation mechanism dropout with the tangent plane mutually that connects the roller contact.
The present invention has also disclosed a kind of circuit breaker operation mechanism with rotating shaft connected system.Fig. 1 has disclosed the structure chart of the circuit breaker operation mechanism with rotating shaft connected system.With reference to shown in Figure 1, the rotating shaft connected system connects the quadric chain 107 of main shaft 101, the cantilever 102 on the main shaft 101 and the circuit breaker of circuit breaker, and the rotating shaft connected system comprises:
Connecting pin 103 is connected in the cantilever 102 on the main shaft 101;
Connect roller 104, be enclosed within on the connecting pin 103;
Cam 106 is connected in rotating shaft 105 and 105 rotations around the shaft;
Wherein, a side of cam 106 connects quadric chain 107, the opposite side of cam 106 be connected roller 104 and contact.
Cam 106 is circular-arc with a side that is connected roller 104 contacts, when cam 106 105 rotations around the shaft, has only all the time on the cam 106 a bit to contact with being connected roller 104, forms the phase tangent plane.Tripping force when this phase tangent plane can effectively reduce the circuit breaker operation mechanism dropout.
When operating mechanism carried out closed procedure, combined floodgate lever piece 109 bump first connecting rods 110 drove quadric chain 107 because a side of quadric chain 107 and cam 106 is connected, the moving belt moving cam 106 of quadric chain 107 around rotating shaft 105 rotate.The opposite side of cam 106 be connected roller 104 contact; Connect roller 104 and be enclosed within on the connecting pin 103, and connecting pin 103 is connected with cantilever 102, so; Just can promote to be connected the cantilever 102 on the main shaft 101, push to closure to contact at last through connection roller 104 and connecting pin 103.
Counter-force on the contact of closed back acts on still through above-mentioned parts: main shaft 101, cantilever 102, connecting pin 103, connection roller 104, cam 106, quadric chain 107, first connecting rod 110 pass to second connecting rod 108.Concave surface on the second connecting rod 108 contacts with an end of third connecting rod 111, and the other end of third connecting rod 111 contacts with dropout semiaxis 112.So the counter-force on the contact of closed back finally is passed on the dropout semiaxis 112.In traditional design, quadric chain 107 directly is connected with cantilever 102, and therefore in said process, huge counter-force effect can't obtain buffering in transmittance process, can impact dropout semiaxis 112 greatly.And in the present invention, cam 106 can be offset a part of power well with the tangent plane mutually that connects roller 104 contacts.
With reference to shown in Figure 2; Cam 106 is circular-arc with a side that is connected roller 104 contacts; When cam 106 105 rotations around the shaft; All the time have only on the cam 106 a bit to contact, form phase tangent plane 200, the tripping force when utilizing this phase tangent plane 200 can effectively reduce the circuit breaker operation mechanism dropout with being connected roller 104.In addition, cam 106 is connected on four connecting rods 107, under the turning effort of rotating shaft 105 and cam 106, is used for operating mechanism and carries out required the touching of closed procedure and can also can reduce by spring force.
Contact pressure is delivered on main shaft and four connecting rods by the main shaft cantilever among the present invention; And main shaft has born most contact pressure; The fraction contact pressure is born by four connecting rods; Make the tripping force of operating mechanism can become very little, greatly reducing originally, very big mechanism's tripping force has improved mechanism's intensity and useful life.
The foregoing description provides to being familiar with personnel in this area and realizes or use of the present invention; Being familiar with those skilled in the art can be under the situation that does not break away from invention thought of the present invention; The foregoing description is made various modifications or variation; Thereby protection scope of the present invention do not limit by the foregoing description, and should be the maximum magnitude that meets the inventive features that claims mention.
Claims (5)
1. the rotating shaft connected system in the circuit breaker operation mechanism is characterized in that, this rotating shaft connected system connects the quadric chain of main shaft, the cantilever on the main shaft and the circuit breaker of circuit breaker, and said rotating shaft connected system comprises:
Connecting pin is connected in the cantilever on the main shaft;
Connect roller, be enclosed within on the said connecting pin;
Rotating shaft;
Cam is connected in said rotating shaft and rotates around said rotating shaft;
Wherein, a side of said cam connects said quadric chain, and the opposite side of said cam contacts with the said roller that is connected; Said cam is circular-arc with a side that is connected the roller contact; When cam rotates around the shaft, have only all the time on the cam a bit to contact with being connected roller, form the phase tangent plane.
2. rotating shaft connected system as claimed in claim 1 is characterized in that, the tripping force when said cam reduces the circuit breaker operation mechanism dropout with the tangent plane mutually that connects the roller contact.
3. a circuit breaker operation mechanism is characterized in that, comprises the rotating shaft connected system, and this rotating shaft connected system connects the quadric chain of main shaft, the cantilever on the main shaft and the circuit breaker of circuit breaker, and said rotating shaft connected system comprises:
Connecting pin is connected in the cantilever on the main shaft;
Connect roller, be enclosed within on the said connecting pin;
Rotating shaft;
Cam is connected in said rotating shaft and rotates around said rotating shaft;
Wherein, a side of said cam connects said quadric chain, and the opposite side of said cam contacts with the said roller that is connected; Said cam is circular-arc with a side that is connected the roller contact; When cam rotates around the shaft, have only all the time on the cam a bit to contact with being connected roller, form the phase tangent plane.
4. circuit breaker operation mechanism as claimed in claim 3 is characterized in that, the tripping force when said cam reduces the circuit breaker operation mechanism dropout with the tangent plane mutually that connects the roller contact.
5. circuit breaker operation mechanism as claimed in claim 4 is characterized in that, said cam reduces to act on when circuit breaker operation mechanism is threaded off the said tripping force on the dropout semiaxis with the tangent plane mutually that connects the roller contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102081205A CN101770904B (en) | 2008-12-29 | 2008-12-29 | Operating mechanism of circuit breaker and its shaft connection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102081205A CN101770904B (en) | 2008-12-29 | 2008-12-29 | Operating mechanism of circuit breaker and its shaft connection system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101770904A CN101770904A (en) | 2010-07-07 |
| CN101770904B true CN101770904B (en) | 2012-07-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008102081205A Active CN101770904B (en) | 2008-12-29 | 2008-12-29 | Operating mechanism of circuit breaker and its shaft connection system |
Country Status (1)
| Country | Link |
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| CN (1) | CN101770904B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101826424B (en) * | 2009-03-03 | 2012-08-22 | 上海电科电器科技有限公司 | Breaker switching-on mechanism |
| CN102446665B (en) * | 2011-12-15 | 2012-11-21 | 常熟开关制造有限公司(原常熟开关厂） | Rotating shaft structure of circuit breaker release |
| CN104465153B (en) * | 2014-12-23 | 2017-10-27 | 贵州泰永长征技术股份有限公司 | A kind of novel operating mechanism of Double-breakpoint universal circuit breaker |
| CN106710983B (en) * | 2016-12-22 | 2018-09-04 | 上海电器股份有限公司人民电器厂 | A kind of operating mechanism of low-voltage circuit breaker |
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- 2008-12-29 CN CN2008102081205A patent/CN101770904B/en active Active
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| Publication number | Publication date |
|---|---|
| CN101770904A (en) | 2010-07-07 |
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