CN202712021U - Three-working-position isolating switch - Google Patents
Three-working-position isolating switch Download PDFInfo
- Publication number
- CN202712021U CN202712021U CN 201220261765 CN201220261765U CN202712021U CN 202712021 U CN202712021 U CN 202712021U CN 201220261765 CN201220261765 CN 201220261765 CN 201220261765 U CN201220261765 U CN 201220261765U CN 202712021 U CN202712021 U CN 202712021U
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- Prior art keywords
- transmission shaft
- power transmission
- spring
- stop collar
- moving contact
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- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The utility model discloses a three-working-position isolating switch comprises a switch frame, an insulation pull rod and a transmission shaft which is in transmission connection with the insulation pull rod. The transmission shaft is provided with a torsional spring or a spiral spring which stores energy when the transmission shaft is rotated clockwise and releases torsional force when the transmission shaft is rotated counterclockwise. One end of the torsional spring or the spiral spring is fixedly arranged on the transmission shaft, and the other end of the torsional spring or the spiral spring is fixedly arranged on the switch frame. According to the torsional spring or the spiral spring of the utility model, when the transmission shaft is rotated clockwise to realize switching on, the torsional spring or the spiral spring stores certain energy, at the same time, counterforce of the torsional spring or the spiral spring generates a torque moment to prevent the rotation of the transmission shaft, a part of torque moment which is generated due to the gravity of a moving contact can be balanced, the moving contact moves downward smoothly, when the transmission shaft is rotated counterclockwise to realize switching off or grounding, the torsional spring or the spiral spring releases the stored energy, a torque moment which overcomes the gravity of the moving contact is generated, and the loss of mechanism output work caused by gravitational potential energy of the moving contact is compensated.
Description
Technical field
The utility model relates to electric equipment, relates in particular to a kind of tri-station isolating switch.
Background technology
Three station isolation grounding switchs in the present industry, main drive mechanism has two large types, crank arm structure during one class, be CN201570420U such as the Chinese patent notification number, the day for announcing is on September 1st, 2010, name is called the tri-station isolating switch that discloses a kind of crank arm structure in the specification of " a kind of indoor high-voltage three-position disconnecting switch ", drive moving contact clockwise or be rotated counterclockwise realization combined floodgate-separating brake-ground connection by a crank arm structure, described crank arm structure comprises power transmission shaft, the power transmission shaft connecting lever, insulated tension pole, the pull bar connecting lever, power transmission shaft connecting lever and the riveting of pull bar connecting lever are contained on the power transmission shaft, and the pull bar connecting lever is connected with moving contact by insulated tension pole; Another kind of is gear ﹠ rack structure, be CN102024606A such as the Chinese patent notification number, the day for announcing is on April 20th, 2011, the explanation that name is called " three station isolation grounding switchs " is right and discloses a kind of tri-station isolating switch of gear ﹠ rack structure, drive moving contact by a gear ﹠ rack structure and move realization combined floodgate-separating brake-ground connection, gear ﹠ rack structure comprises power transmission shaft, insulating bar, pitch wheel tooth bar, tooth bar is arranged on the moving contact, insulating bar one end power transmission shaft, the other end gear that is in transmission connection that is in transmission connection.
The dynamic and static contact of these two kinds of structures is when vertically arranging, when moving contact moves downward combined floodgate, torque and the moving contact self gravitation of mechanism's output do work simultaneously, therefore need the power of mechanism's output little, during separating brake, the merit part of mechanism's output need to be used for overcoming the self gravitation of moving contact otherwise moving contact moves upward, and has caused mechanism's output work part loss, therefore need the power of mechanism's output large, so the self gravitation of moving contact has caused mechanism's output work inconsistent.
The utility model content
The purpose of this utility model is to provide a kind of can be offset, compensate because moving contact gravitional force causes the tri-station isolating switch of mechanism's output work loss.
For achieving the above object, the utility model adopts following technical scheme: a kind of tri-station isolating switch, the power transmission shaft that comprises switch framework, insulated tension pole, is in transmission connection with insulated tension pole, be provided with on the described power transmission shaft and when power transmission shaft clockwise rotates, reverse energy storage discharges twisting resistance when power transmission shaft rotates counterclockwise torsion spring or volute spring, one end of torsion spring or volute spring fixedly is assemblied on the power transmission shaft, and the other end fixedly is assemblied on the switch framework.
Insulated tension pole and power transmission shaft junction are installed with the radome of insulated tension pole, be installed with the shielding stop collar on the switch framework, the shielding stop collar is set in the periphery of torsion spring or volute spring, torsion spring or volute spring one end are connected on the radome and fixedly are assemblied on the power transmission shaft, and the other end is connected on the shielding stop collar and fixedly is assemblied on the switch framework.
Be provided with the shaft seal that is consisted of by bearing and sealing ring between shielding stop collar and the power transmission shaft.
Described shielding stop collar has the little ladder endoporus in large centre, two ends, and described torsion spring or volute spring are positioned at the large diameter hole of shielding stop collar one end, and described shaft seal is positioned at the large diameter hole of the shielding stop collar other end.
A kind of tri-station isolating switch of the present utility model, the torsion spring or the volute spring that arrange at power transmission shaft, when power transmission shaft turns clockwise to realize closing operation, torsion spring or volute spring are along with the rotation of power transmission shaft at this moment, distortion twists, accumulate certain energy, the reaction force of torsion spring or volute spring has produced a moment that stops the power transmission shaft rotation simultaneously, torsion spring or volute spring just can balance the torque that a part produces because of the gravity of moving contact like this, moving contact is steadily moved downward, when power transmission shaft is rotated counterclockwise to realize separating brake or ground connection operation, torsion spring or volute spring discharge the energy that accumulates, to produce a moment of torsion that overcomes moving contact gravity, compensated because moving contact gravitional force causes mechanism's output work loss.
Further, radome is used in conjunction with the shielding stop collar, has effectively shielded torsion spring or volute spring when distortion, and the electric field distortion that causes shields simultaneously stop collar and prevented torsion spring or volute spring excessive deformation.
Further, the shaft seal of setting can effectively prevent friction and the Leakage Gas between power transmission shaft and the shielding stop collar.
Description of drawings
Fig. 1 is the gate-dividing state structural representation of embodiment of the present utility model;
Fig. 2 is the A place partial enlarged drawing of Fig. 1;
Fig. 3 is the "on" position structural representation of embodiment of the present utility model.
Embodiment
A kind of embodiment of tri-station isolating switch, as Figure 1-3, comprise switch framework 10, the inside of switch framework 10 up and down correspondence is provided with fixed contact 1, moving contact 2, moving contact 2 upper drivings are connected with insulated tension pole 3, the outer setting of switch framework 10 has operating mechanism 9, operating mechanism comprises power transmission shaft 7, inside and insulated tension pole 3 that power transmission shaft 7 penetrates into switch framework 10 are in transmission connection, be installed with the shielding stop collar 6 with the little ladder endoporus of the large middle diameter of two ends diameter that passes for power transmission shaft 7 on the switch framework 10, insulated tension pole 3 is provided with radome 4 with the junction of power transmission shaft 7, be arranged with on the power transmission shaft 7 and when power transmission shaft 7 clockwise rotates, reverse energy storage and when power transmission shaft 7 rotates counterclockwise, discharge twisting resistance with the torsion spring 5 of the gravity that overcomes moving contact, shielding stop collar 6 is enclosed within the periphery of torsion spring 5 near the larger diameter end of radome 4, one end of torsion spring 5 is connected on the insulating cover 4, the other end of torsion spring 5 is connected on the shielding stop collar 6, be equipped with shaft seal 8 between the larger diameter end of the other end of shielding stop collar 6 and the power transmission shaft 7, shaft seal 8 is made of bearing and sealing ring.
The utility model in use, when moving contact and fixed contact are in gate-dividing state, torsion spring is relaxed state, when moving contact begins to change from gate-dividing state to "on" position (moving contact down moves), under the drive of operating mechanism, torsion spring twisted and was out of shape the certain energy of storage this moment, the reaction force of torsion spring has produced a moment that stops the power transmission shaft rotation simultaneously, torsion spring just can balance the torque that a part produces because of the gravity of moving contact like this, moving contact is steadily moved downward, when moving contact begins to change from "on" position to gate-dividing state (moving contact up moves), under the drive of operating mechanism, torsion spring releases energy, in order to offset the gravitional force of moving contact when rising, radome is used in conjunction with the shielding stop collar, has effectively shielded torsion spring or volute spring when distortion, the electric field distortion that causes.
In other embodiments, described torsion spring can also replace with volute spring.
Claims (4)
1. tri-station isolating switch, the power transmission shaft that comprises switch framework, insulated tension pole, is in transmission connection with insulated tension pole, it is characterized in that, be provided with on the described power transmission shaft and when power transmission shaft clockwise rotates, reverse energy storage discharges twisting resistance when power transmission shaft rotates counterclockwise torsion spring or volute spring, one end of torsion spring or volute spring fixedly is assemblied on the power transmission shaft, and the other end fixedly is assemblied on the switch framework.
2. a kind of tri-station isolating switch according to claim 1, it is characterized in that, insulated tension pole and power transmission shaft junction are installed with the radome of insulated tension pole, be installed with the shielding stop collar on the switch framework, the shielding stop collar is set in the periphery of torsion spring or volute spring, torsion spring or volute spring one end are connected on the radome and fixedly are assemblied on the power transmission shaft, and the other end is connected on the shielding stop collar and fixedly is assemblied on the switch framework.
3. a kind of tri-station isolating switch according to claim 2 is characterized in that, is provided with the shaft seal that is made of bearing and sealing ring between shielding stop collar and the power transmission shaft.
4. a kind of tri-station isolating switch according to claim 3, it is characterized in that, described shielding stop collar has the little ladder endoporus in large centre, two ends, described torsion spring or volute spring are positioned at the large diameter hole of shielding stop collar one end, and described shaft seal is positioned at the large diameter hole of the shielding stop collar other end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220261765 CN202712021U (en) | 2012-06-05 | 2012-06-05 | Three-working-position isolating switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220261765 CN202712021U (en) | 2012-06-05 | 2012-06-05 | Three-working-position isolating switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202712021U true CN202712021U (en) | 2013-01-30 |
Family
ID=47592299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220261765 Expired - Lifetime CN202712021U (en) | 2012-06-05 | 2012-06-05 | Three-working-position isolating switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202712021U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103617915A (en) * | 2013-11-30 | 2014-03-05 | 国家电网公司 | Three-station disconnecting switch with grounding indication switch and grounding contact of three-station disconnecting switch |
-
2012
- 2012-06-05 CN CN 201220261765 patent/CN202712021U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103617915A (en) * | 2013-11-30 | 2014-03-05 | 国家电网公司 | Three-station disconnecting switch with grounding indication switch and grounding contact of three-station disconnecting switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: South East of Pingdingshan city in Henan province 467001 No. 22 Patentee after: Pinggao Electric Co., Ltd., Henan Patentee after: Pinggao Group Co., Ltd. Address before: South East of Pingdingshan city in Henan province 467001 No. 23 Patentee before: Pinggao Electric Co., Ltd., Henan Patentee before: Pinggao Group Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130130 |