CN203377156U - Buffer-and-counter-weight-integration high-voltage circuit breaker - Google Patents
Buffer-and-counter-weight-integration high-voltage circuit breaker Download PDFInfo
- Publication number
- CN203377156U CN203377156U CN201320475370.1U CN201320475370U CN203377156U CN 203377156 U CN203377156 U CN 203377156U CN 201320475370 U CN201320475370 U CN 201320475370U CN 203377156 U CN203377156 U CN 203377156U
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- China
- Prior art keywords
- buffer
- counterweight
- connecting lever
- piston rod
- main shaft
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- Expired - Fee Related
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Abstract
The utility model relates to a buffer-and-counter-weight-integration high-voltage circuit breaker. The circuit breaker comprises a shell, a major loop arranged in the shell, an arc extinguishing mechanism and an operation mechanism. A main shaft of the operation mechanism drives a moving contact of the major loop to carry out reciprocating motion through a transmission assembly so as to carry out opening and closing motion. The transmission assembly comprises a main transmission connecting lever connected with the main shaft. The main shaft is connected with a buffer through one connecting lever. The buffer comprises a buffer cylinder and a piston rod which can carry out rectilinear motion relatively to the buffer cylinder. The piston rod is arranged on an upper portion of the buffer cylinder. A lower end of the buffer cylinder is connected with the connecting lever. An upper end portion is provided with a counter weight end cap. A return spring is sleeved between the counter weight end cap and the buffer cylinder. The counter weight end cap is provided with a strip-type hole. A spacer pin is inserted into the strip-type hole. The spacer pin is fixed on a support plate. The strip-type hole can slide relatively to the spacer pin and carry out spacing. According to the circuit breaker of the utility model, the buffer and the counter weight are integratedly arranged; the structure is simple; a plurality of functions, such as the buffer, the spacing and the counter weight, are realized.
Description
Technical field
The utility model relates to a kind of primary cut-out.
Background technology
At present, in the primary cut-out product, due to when the separating brake, powerful energy demand absorbs complete in a short period of time, has all adopted bar none shunt switch buffer to reach rapid endergonic effect.During separating brake, under the drive of touch spring and tripping spring, all moving components participate in the separating brake process, after touch spring completes the release of overtravel compression energy, moving contact is just followed transmission mechanism and is moved together, finally by the buffer on rotating spindle, connect connecting lever contact compression buffer, on earth, the circuit breaker moving component is limited for moving contact and transmission mechanism deceleration, buffer compression buffer spring, between now buffering course end, dynamic/static contact, reaches the specified distance of opening.In addition, for the primary cut-out product, increase rational counterweight and can improve the mechanical performances such as the opening velocity of circuit breaker, closing rebound on whole drive system.
But, on current domestic electricity market, for the vacuum circuit-breaker product, as shown in Figure 1, also there is following point on buffer driven Design and counterbalance design:
1, buffer adopts inverted fixed form, piston rod down, due to factors such as himself gravity, make buffer when breaker open operation not in best buffering energy-absorbing state; In addition, fixing owing to being inverted, the oil in the oil bumper that the most circuit breaker all adopts has the risk penetrated, and affects the performance of splitting lock cushioning.
2, the design of counterweight is all to be added on the main transmission connecting lever of circuit breaker usually, the main transmission connecting lever connects moving contact by transmission component, can affect the efficiency of assembling of correlated parts on the main transmission connecting lever on the one hand, on the other hand because equivalent mass on the main transmission connecting lever is less, make and need total weight mass of increase larger, corresponding cost is also higher.
Summary of the invention
In order to overcome the above-mentioned deficiency of prior art, the utility model provides a kind of raising shock-absorbing capacity and assembling to simplify and light-weighted buffer and the integrated primary cut-out of counterweight.
The technical scheme in the invention for solving the technical problem is:
The integrated primary cut-out of a kind of buffer and counterweight, comprise housing, be arranged on the major loop in housing, arc-extinguishing mechanism and operating mechanism, described major loop includes fixed contact and moving contact, described operating structure comprises main shaft, main shaft drives moving contact by transmission component and moves back and forth and carry out the divide-shut brake action, described transmission component comprises the main transmission connecting lever that connects main shaft, also by a connecting lever, connect a buffer on described main shaft, described buffer comprises cushion dashpot and the straight-line piston rod of cushion dashpot relatively, described piston rod is arranged on the top of cushion dashpot, the lower end of cushion dashpot connects described connecting lever by a connector, end, described piston rod upper end is provided with the counterweight end cap, be arranged with back-moving spring on described piston rod between counterweight end cap and cushion dashpot, offer bar hole on described counterweight end cap, the length direction of bar hole and piston rod movement direction are in the same way, insert the limited location pin in bar hole, described spacer pin is fixed on a supporting bracket, but described bar hole relative limit pin slides and carries out spacing, described supporting bracket is positioned at buffer one side.
As preferably, the lower end of the cushion dashpot described connector that is threaded, and locking has lock nut, and described connecting lever is fixed on connector by securing member, and the outside of described securing member and spacer pin is provided with block card.
As preferably, counterweight end cap integral type is arranged on piston rod end.
As preferably, the outerface of spindle is provided with spline, and the spline through hole of coupling is set on described connecting lever, and described main spindle multiple spline connects described connecting lever.
As preferably, buffer is oil bumper.
Buffer connects on the main shaft rotated when the mode of connecting lever by spline fitted is fixed on primary cut-out deciliter, buffer connector and cushion dashpot are fixed together by screw thread, end at the piston rod of buffer arranges the counterweight end cap, it not only is limited in inside to the spacer pin as quiet end by the bar hole of counterweight end cap, and has the counterweight effect.Whole buffer is all as the parts of motion in the process of circuit breaker on/off switch, and in circuit-breaker switching on-off, counterweight end cap bar hole and spacer pin do relative motion, and has realized that splitting lock cushioning is spacing and the function of the motion of closing a floodgate.Specifically, driving connecting lever when main shaft rotates moves up and down, the piston rod that connecting lever drives on buffer is moved up and down, bar hole relative limit pin is slided, when connecting lever moves upward, the counterweight end cap compression reseting spring of the end of piston rod, be compressed to behind the end limited, when connecting lever moves downward, spacer pin is limited in bar hole.
The beneficial effects of the utility model are:
The utility model is arranged on counterweight on buffer, in prior art, be arranged on the main transmission connecting lever, the principle of utilizing the circuit breaker gearratio to change, now only need the counterweight of lower weight just can realize improving the mechanical performance such as opening velocity, closing rebound of circuit breaker, not only reduce production cost, also simplified the assembly structure of main transmission connecting lever.
The utility model is just put buffer, and appropriate design buffering and position limiting structure, and not only assembling is simple, also prevents leakage of oil, has more improved shock-absorbing capacity.
The utility model is by buffer and counterweight integrated setting, simple in structure, realized buffering, spacing, counterweight several functions, easy to make, assembling is simple, is a set of special in adopting main shaft to rotate the buffer counterweight integrative solution of the primary cut-out product of drive system.In the situation that do not affect efficiency of assembling, reduce costs the requirement that meets the circuit breaker performance.
The accompanying drawing explanation
Fig. 1 is the structural representation of prior art.
Fig. 2 is assembly structure schematic diagram of the present utility model.
Fig. 3 main TV structure schematic diagram of the present utility model.
Fig. 4 is the side-looking structural representation of Fig. 3.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
In Figure 2-4, the integrated primary cut-out of a kind of buffer and counterweight, comprise housing, be arranged on major loop, arc-extinguishing mechanism and operating mechanism in housing, major loop includes fixed contact and moving contact, operating structure comprises main shaft 1, main shaft 1 drives moving contact by transmission component and moves back and forth and carry out the divide-shut brake action, and transmission component comprises the main transmission connecting lever 2 that connects main shaft 1.Main shaft 1 outer surface is provided with spline, and the spline through hole of coupling is set on connecting lever 3, and main spindle multiple spline connects connecting lever.Connecting lever 3 connects a buffer 4, buffer 4 comprises cushion dashpot 5 and the straight-line piston rod 6 of cushion dashpot relatively, piston rod 6 is arranged on the top of cushion dashpot, the lower end of cushion dashpot 5 connector 7 that is threaded, and locking has lock nut 8, connector 7 is fixedly connected with connecting lever 3 by securing member, and the arranged outside of securing member has block card 14, prevents that securing member from coming off.Piston rod 6 end, upper end integral types are provided with counterweight end cap 9, the weight of counterweight end cap can arrange according to needs, offer bar hole 10 on counterweight end cap 9, the length direction of bar hole 10 and piston rod 6 directions of motion are in the same way, be arranged with back-moving spring 11 on piston rod 6 between counterweight end cap and cushion dashpot, the interior insertion limited location of bar hole 10 pin 12, the outside of spacer pin 12 also is provided with block card 14, spacer pin 12 is fixed on a supporting bracket 13, but bar hole 10 relative limit pins 12 slide and carry out spacingly, and supporting bracket 13 is positioned at buffer 4 one sides.Buffer 4 can be oil bumper or other buffers.
The utility model is arranged on counterweight on buffer, in prior art, be arranged on the main transmission connecting lever, the principle of utilizing the circuit breaker gearratio to change, now only need the counterweight of lower weight just can realize improving the mechanical performance such as opening velocity, closing rebound of circuit breaker, not only reduce production cost, also simplified the assembly structure of main transmission connecting lever.
The utility model is just put buffer, and appropriate design buffering and position limiting structure, and not only assembling is simple, also prevents leakage of oil, has more improved shock-absorbing capacity.
The utility model is by buffer and counterweight integrated setting, easy to make, and assembling is simple, is a set of special in adopting main shaft to rotate the buffer counterweight integrative solution of the primary cut-out product of drive system.In the situation that do not affect efficiency of assembling, reduce costs the requirement that meets the circuit breaker performance.
Claims (5)
1. a buffer and the integrated primary cut-out of counterweight, comprise housing, be arranged on the major loop in housing, arc-extinguishing mechanism and operating mechanism, described major loop includes fixed contact and moving contact, described operating structure comprises main shaft, main shaft drives moving contact by transmission component and moves back and forth and carry out the divide-shut brake action, described transmission component comprises the main transmission connecting lever that connects main shaft, it is characterized in that: on described main shaft, also by a connecting lever, connect a buffer, described buffer comprises cushion dashpot and the straight-line piston rod of cushion dashpot relatively, described piston rod is arranged on the top of cushion dashpot, the lower end of cushion dashpot connects described connecting lever by a connector, end, described piston rod upper end is provided with the counterweight end cap, be arranged with back-moving spring on described piston rod between counterweight end cap and cushion dashpot, offer bar hole on described counterweight end cap, the length direction of bar hole and piston rod movement direction are in the same way, insert the limited location pin in bar hole, described spacer pin is fixed on a supporting bracket, but described bar hole relative limit pin slides and carries out spacing, described supporting bracket is positioned at buffer one side.
2. a kind of buffer according to claim 1 and the integrated primary cut-out of counterweight, it is characterized in that: the lower end of the described cushion dashpot described connector that is threaded, and locking has lock nut, described connecting lever is fixed on connector by securing member, and the outside of described securing member and spacer pin is provided with block card.
3. a kind of buffer according to claim 2 and the integrated primary cut-out of counterweight, it is characterized in that: described counterweight end cap integral type is arranged on piston rod end.
4. a kind of buffer according to claim 3 and the integrated primary cut-out of counterweight, it is characterized in that: the described outerface of spindle is provided with spline, and the spline through hole of coupling is set on described connecting lever, and described main spindle multiple spline connects described connecting lever.
5. a kind of buffer according to claim 4 and the integrated primary cut-out of counterweight, it is characterized in that: described buffer is oil bumper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320475370.1U CN203377156U (en) | 2013-08-06 | 2013-08-06 | Buffer-and-counter-weight-integration high-voltage circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320475370.1U CN203377156U (en) | 2013-08-06 | 2013-08-06 | Buffer-and-counter-weight-integration high-voltage circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203377156U true CN203377156U (en) | 2014-01-01 |
Family
ID=49839669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320475370.1U Expired - Fee Related CN203377156U (en) | 2013-08-06 | 2013-08-06 | Buffer-and-counter-weight-integration high-voltage circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203377156U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103413720A (en) * | 2013-08-06 | 2013-11-27 | 库柏(宁波)电气有限公司 | High-voltage circuit breaker with buffer and balance weight integrated |
-
2013
- 2013-08-06 CN CN201320475370.1U patent/CN203377156U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103413720A (en) * | 2013-08-06 | 2013-11-27 | 库柏(宁波)电气有限公司 | High-voltage circuit breaker with buffer and balance weight integrated |
| CN103413720B (en) * | 2013-08-06 | 2015-11-04 | 库柏(宁波)电气有限公司 | The primary cut-out that a kind of buffer is integrated with counterweight |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140101 Termination date: 20170806 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |