CN113345754A - Variable-force-arm switch operating mechanism, grounding switch and isolating switch - Google Patents
Variable-force-arm switch operating mechanism, grounding switch and isolating switch Download PDFInfo
- Publication number
- CN113345754A CN113345754A CN202010694672.2A CN202010694672A CN113345754A CN 113345754 A CN113345754 A CN 113345754A CN 202010694672 A CN202010694672 A CN 202010694672A CN 113345754 A CN113345754 A CN 113345754A
- Authority
- CN
- China
- Prior art keywords
- blade
- arm
- main shaft
- driving
- operating mechanism
- 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.)
- Granted
Links
- 230000007246 mechanism Effects 0.000 title claims abstract description 38
- 230000003068 static effect Effects 0.000 claims abstract description 15
- 238000000926 separation method Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 7
- 230000009471 action Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/003—Earthing switches
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
- H01H31/04—Interlocking mechanisms
- H01H31/08—Interlocking mechanisms for interlocking two or more parts of the mechanism for operating contacts
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
A variable force arm switch operating mechanism, a grounding switch and an isolating switch, wherein the variable force arm switch operating mechanism comprises a main shaft and a three-phase contact assembly fixed on the main shaft; each phase of contact assembly has the same structure and comprises a driving arm and a blade; one end of the driving arm is fixedly connected to the main shaft, the other end of the driving arm is connected with the blade, and the blade is driven to rotate through the rotation of the main shaft, so that the blade and the static contact are switched on or switched off; the force arm for driving the driving arm to drive the blade to rotate anticlockwise through anticlockwise rotation of the main shaft is different from the force arm for driving the driving arm to drive the blade to rotate clockwise through clockwise rotation of the main shaft. The variable force arm switching mechanism provides a smaller force arm to reduce the switching-on force in the switching-on process and provides a larger force arm in the switching-off process, so that the switching-off force is improved, the function of switching-on and switching-off variable force arms is realized, and the switching performance is improved.
Description
Technical Field
The invention belongs to the technical field of switch cabinets, and particularly relates to a variable-force-arm switch operating mechanism, and a grounding switch and an isolating switch comprising the variable-force-arm switch operating mechanism.
Background
In the field of switch cabinets, grounding switches and isolating switches are common parts in the switch cabinets, and for the switches, the reliability of the switches plays a vital role in the safety of maintenance personnel. Because the requirement on the on-off current is not high, the switch mostly exists in a knife switch mode, and in the practical application of the knife switch, if the switch-on force is too large during the switch-on, the switch-on force can rebound after the switch-on is in place, so that the switch-on is not in place. When the switching-on force is adjusted to enable the switch to be switched on in place, the clamping force is usually too large at the moment, and the phenomenon that the switch is difficult to be switched off occurs, so that a balance is difficult to find between the switching-on and switching-off forces.
Disclosure of Invention
Aiming at the problem of switching on and off, the invention provides a variable-force-arm switch operating mechanism, and a grounding switch and a disconnecting switch comprising the variable-force-arm switch operating mechanism, wherein the force arm of the switching on and off can be adjusted: a smaller force arm is provided in the switching-on process, so that the switching-on force is reduced; and provides larger force arm when opening the brake, thereby improving the brake opening force.
In order to solve the above problems, a first aspect of the present invention provides a variable force arm switch operating mechanism, including a main shaft and a three-phase contact assembly fixed on the main shaft;
each phase of contact assembly has the same structure and comprises a driving arm and a blade; one end of the driving arm is fixedly connected to the main shaft, the other end of the driving arm is connected with the blade, and the blade is driven to rotate through the rotation of the main shaft, so that the blade and the static contact are switched on or switched off;
the force arm for driving the driving arm to drive the blade to rotate anticlockwise through anticlockwise rotation of the main shaft is different from the force arm for driving the driving arm to drive the blade to rotate clockwise through clockwise rotation of the main shaft.
Furthermore, the number of the blades is two, one end of each blade is connected with the driving arm through a bolt, and disc springs are mounted at two ends of the bolt, which are positioned at the outer sides of the two blades;
the other ends of the two blades are connected through a bolt, a gasket is arranged between the two blades, and disc springs are mounted at two ends of the bolt, which are located on the outer sides of the two blades.
Further, when the spindle rotates clockwise, the driving arm drives the blade to rotate clockwise, so that the blade is in contact with the static contact and clamps the static contact to realize closing, and the length of a force arm between the blade and the rotation center of the spindle is L1 when the blade is closed; when the main shaft rotates anticlockwise, the driving arm drives the blade to rotate anticlockwise, so that the blade is separated from the static contact, brake separation is achieved, the length of a force arm between the blade and the rotation center of the main shaft is L2 when the brake is separated, and L1 is smaller than L2.
Furthermore, the blade is provided with four holes, two holes at two ends are round holes, and the connecting line of the circle centers of the two holes is parallel to the length direction of the blade; wherein the round hole at one end is connected with the driving arm through a bolt, and the round hole at the other end connects the two blades through a bolt;
two holes in the middle are long round holes and are connected with the driving arm through a guide post, and the centers of the two long round holes are respectively positioned on two sides of a connecting line of the circle centers of the two round holes.
Furthermore, the circle center of the semicircle at the lower end of the long round hole with the small moment arm of the blade away from the main shaft rotation center and the circle center of the semicircle at the upper end of the long round hole with the large moment arm of the blade away from the main shaft rotation center are both positioned on a connecting line of the circle centers of the round holes at the two ends.
Furthermore, the diameter sizes of the two ends of the guide post are smaller than the diameter size of the middle of the guide post, the cylinder with the large diameter size in the middle of the guide post penetrates through the driving arm, the length of the cylinder is equal to the distance between the two blades, the cylinders with the small diameters of the two ends are respectively connected with the long holes of the two blades, and the length of the cylinder is equal to the thickness of the blades.
Further, the distance between the two oblong holes can be adjusted to adjust the length L1 and the length L2 of the force arm.
A second aspect of the invention provides a earthing switch comprising a variable force arm switch operating mechanism as claimed in any one of the preceding claims.
A third aspect of the invention provides a disconnector comprising a variable force arm switch operating mechanism as claimed in any one of the preceding claims.
In summary, the present invention provides a variable force arm switch operating mechanism, a grounding switch and a disconnecting switch, wherein the variable force arm switch operating mechanism includes a main shaft and a three-phase contact assembly fixed on the main shaft; each phase of contact assembly has the same structure and comprises a driving arm and a blade; one end of the driving arm is fixedly connected to the main shaft, the other end of the driving arm is connected with the blade, and the blade is driven to rotate through the rotation of the main shaft, so that the blade and the static contact are switched on or switched off; the force arm for driving the driving arm to drive the blade to rotate anticlockwise through anticlockwise rotation of the main shaft is different from the force arm for driving the driving arm to drive the blade to rotate clockwise through clockwise rotation of the main shaft. The variable force arm switching mechanism provides a smaller force arm to reduce the switching-on force in the switching-on process and provides a larger force arm in the switching-off process, so that the switching-off force is improved, the function of switching-on and switching-off variable force arms is realized, and the switching performance is improved.
Drawings
FIG. 1 is a schematic structural view of a variable force arm switch operating mechanism according to an embodiment of the present invention;
FIG. 2 is a schematic view of the location of the blade opening of an embodiment of the present invention;
fig. 3 is a schematic view of the length of the moment arm according to the embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
The invention provides a variable-force arm switch operating mechanism, which comprises a main shaft and a three-phase contact assembly fixed on the main shaft; each phase of contact assembly has the same structure and comprises a driving arm and a blade; one end of the driving arm is fixedly connected to the main shaft, the other end of the driving arm is connected with the blade, and the blade is driven to rotate through the rotation of the main shaft, so that the blade and the static contact are switched on or switched off; the force arm for driving the driving arm to drive the blade to rotate anticlockwise through the anticlockwise rotation of the main shaft is different from the force arm for driving the driving arm to drive the blade to rotate clockwise through the clockwise rotation of the main shaft. Specifically, the structure of the variable-force arm switch operating mechanism is shown in fig. 1, and comprises a main shaft 1 and three-phase contact assemblies with the same structure, wherein each phase of contact assembly comprises a driving arm 2, a blade 3, a disc spring 4, a guide post 5 and a gasket 6. The main shaft 1 is rotation center, and the round hole that three-phase contact subassembly passes through 2 one ends of actuating arm and 1 welded fastening of main shaft, and blade 3 uses in pairs, and one end is passed through the bolt and is fixed in the actuating arm both sides with dish spring 4, and 2 other ends of two blades are equally fastened and are supported with the packing ring between two blades with bolt and dish spring 4, include two guide posts 5 in the middle of every two blades mutually, and the guide post passes actuating arm 2, and both ends insert the rectangular hole as shown in fig. 2 on the blade 2 respectively.
Furthermore, the blade is provided with four holes, two holes at two ends are round holes, and the connecting line of the circle centers of the two holes is parallel to the length direction of the blade; wherein the round hole at one end is connected with the driving arm through a bolt, and the round hole at the other end connects the two blades through a bolt; two holes in the middle are long round holes and are connected with the driving arm through a guide post, and the centers of the two long round holes are respectively positioned on two sides of a connecting line of the circle centers of the two round holes.
Further, as shown in fig. 2, the circle center of the semicircle at the lower end of the long circular hole with the small moment arm of the blade from the main shaft rotation center and the circle center of the semicircle at the upper end of the long circular hole with the large moment arm of the blade from the main shaft rotation center are both located on the connection line of the circle centers of the circular holes at the two ends.
Furthermore, the diameter sizes of the two ends of the guide post are smaller than the diameter size of the middle of the guide post, the cylinder with the large diameter size in the middle of the guide post penetrates through the driving arm, the length of the cylinder is equal to the distance between the two blades, the cylinders with the small diameters of the two ends are respectively connected with the long holes of the two blades, and the length of the cylinder is equal to the thickness of the blades.
As shown in fig. 1, from the left side of the figure: when the main shaft 1 rotates clockwise, the driving arm 2 is connected with the main shaft 1 in a welding mode, the main shaft 1 drives the driving arm 2 to rotate clockwise, and at the moment, due to the limitation of the long strip hole on the left side in the figure 2, the guide post on the lower side in the figure 1 is stressed to drive the blade 3 to rotate clockwise, so that the closing operation of the mechanism is realized; similarly, when the main shaft 1 rotates counterclockwise, the main shaft 1 drives the driving arm 2 to rotate counterclockwise, and at this time, due to the limitation of the right-side strip hole in fig. 2, the upper guide column in fig. 1 is stressed to drive the blade 3 to rotate counterclockwise, so that the opening operation of the mechanism is realized.
In specific application, the motion principle of the mechanism variable force arm is as shown in an application schematic diagram of fig. 3, when the main shaft 1 rotates clockwise, the driving arm 2 drives the blade 3 to rotate clockwise, the blade contacts with the static end 7 and clamps the static end 7 tightly, so that closing is realized, and at the moment, due to the limiting function of the elongated hole of the blade 2 and the action of the guide post, the actual force arm of closing is L1 shown in fig. 3. When the mechanism is in a switch-on position in contact with the static end, the main shaft 1 rotates anticlockwise, similarly, the driving arm 2 drives the blade 3 to rotate anticlockwise, and the actual force arm of the switch-off is L2 shown in FIG. 3 due to the limiting of the long hole of the blade 2 and the action of the guide post. In practical application, the lengths of L1 and L2 can be changed by adjusting the relative positions of the two elongated holes on the blade 2, so that the force arm size of the mechanism opening and closing switch is changed, and the function of the mechanism opening and closing switch force changing arm is realized.
A second aspect of the invention provides a earthing switch comprising a variable force arm switch operating mechanism as claimed in any one of the preceding claims.
A third aspect of the invention provides a disconnector comprising a variable force arm switch operating mechanism as claimed in any one of the preceding claims.
In summary, the present invention provides a variable force arm switch operating mechanism, a grounding switch and a disconnecting switch, wherein the variable force arm switch operating mechanism includes a main shaft and a three-phase contact assembly fixed on the main shaft; each phase of contact assembly has the same structure and comprises a driving arm and a blade; one end of the driving arm is fixedly connected to the main shaft, the other end of the driving arm is connected with the blade, and the blade is driven to rotate through the rotation of the main shaft, so that the blade and the static contact are switched on or switched off; the force arm for driving the driving arm to drive the blade to rotate anticlockwise through anticlockwise rotation of the main shaft is different from the force arm for driving the driving arm to drive the blade to rotate clockwise through clockwise rotation of the main shaft. The variable force arm switching mechanism provides a smaller force arm to reduce the switching-on force in the switching-on process and provides a larger force arm in the switching-off process, so that the switching-off force is improved, the function of switching-on and switching-off variable force arms is realized, and the switching performance is improved.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (9)
1. A variable force arm switch operating mechanism is characterized by comprising a main shaft and a three-phase contact assembly fixed on the main shaft;
each phase of contact assembly has the same structure and comprises a driving arm and a blade; one end of the driving arm is fixedly connected to the main shaft, the other end of the driving arm is connected with the blade, and the blade is driven to rotate through the rotation of the main shaft, so that the blade and the static contact are switched on or switched off;
the force arm for driving the driving arm to drive the blade to rotate anticlockwise through anticlockwise rotation of the main shaft is different from the force arm for driving the driving arm to drive the blade to rotate clockwise through clockwise rotation of the main shaft.
2. The variable force arm switch operating mechanism according to claim 1, wherein the number of the blades is two, one end of each of the two blades is connected with the driving arm through a bolt, and disc springs are mounted at two ends of the bolt, which are located at the outer sides of the two blades;
the other ends of the two blades are connected through a bolt, a gasket is arranged between the two blades, and disc springs are mounted at two ends of the bolt, which are located on the outer sides of the two blades.
3. The variable force arm switch operating mechanism according to claim 1 or 2, wherein when the main shaft rotates clockwise, the driving arm drives the blade to rotate clockwise, so that the blade contacts with the static contact and clamps the static contact to realize switching-on, and the length of the arm of force of the blade from the rotation center of the main shaft during switching-on is L1; when the main shaft rotates anticlockwise, the driving arm drives the blade to rotate anticlockwise, so that the blade is separated from the static contact, brake separation is achieved, the length of a force arm between the blade and the rotation center of the main shaft is L2 when the brake is separated, and L1 is smaller than L2.
4. A variable force arm switch operating mechanism as claimed in any one of claims 1 to 3, wherein the blade is provided with four holes, two holes at two ends are round holes, and the connecting line of the circle centers of the two holes is parallel to the length direction of the blade; wherein the round hole at one end is connected with the driving arm through a bolt, and the round hole at the other end connects the two blades through a bolt;
two holes in the middle are long round holes and are connected with the driving arm through a guide post, and the centers of the two long round holes are respectively positioned on two sides of a connecting line of the circle centers of the two round holes.
5. The variable force arm switch operating mechanism according to claim 4, wherein the center of the blade is located on a connecting line of the centers of the two circular holes at the two ends, the center of the semicircle at the lower end of the oblong hole with a small force arm away from the main shaft rotation center, and the center of the semicircle at the upper end of the oblong hole with a large force arm away from the main shaft rotation center.
6. A variable force arm switch operating mechanism as claimed in claim 5, wherein the diameter of the two ends of the guide post is smaller than the middle diameter, the middle large diameter cylinder of the guide post passes through the driving arm and has a length equal to the distance between the two blades, and the small diameter cylinders of the two ends are respectively connected with the elongated holes of the two blades and have a length equal to the thickness of the blades.
7. A variable force arm switch operating mechanism as claimed in claim 4, 5 or 6, wherein the distance of the two oblong holes is adjustable to adjust the size of the arm lengths L1 and L2.
8. An earthing switch comprising the variable force arm switch operating mechanism according to any one of claims 1 to 7.
9. A disconnector comprising a variable force arm switch operating mechanism according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010694672.2A CN113345754B (en) | 2020-07-17 | 2020-07-17 | Variable force arm switch operating mechanism, grounding switch and isolating switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010694672.2A CN113345754B (en) | 2020-07-17 | 2020-07-17 | Variable force arm switch operating mechanism, grounding switch and isolating switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113345754A true CN113345754A (en) | 2021-09-03 |
| CN113345754B CN113345754B (en) | 2024-04-16 |
Family
ID=77467467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010694672.2A Active CN113345754B (en) | 2020-07-17 | 2020-07-17 | Variable force arm switch operating mechanism, grounding switch and isolating switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113345754B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102254717A (en) * | 2011-06-23 | 2011-11-23 | 上海天灵开关厂有限公司 | Stage-type load switch operation mechanism |
| CN104217887A (en) * | 2014-09-23 | 2014-12-17 | 浙江华仪电器科技有限公司 | Energy storing outputting mechanism applied to spring operating mechanism |
| WO2016045028A1 (en) * | 2014-09-25 | 2016-03-31 | Abb技术有限公司 | Vacuum load switch |
| CN206421984U (en) * | 2017-01-13 | 2017-08-18 | Abb瑞士股份有限公司 | Three-station |
| CN107293443A (en) * | 2017-08-11 | 2017-10-24 | 宇光电气有限公司 | A kind of vacuum load switch operating mechanism |
| WO2018076455A1 (en) * | 2016-10-31 | 2018-05-03 | 国家电网公司 | Servo-drive isolation circuit breaker |
-
2020
- 2020-07-17 CN CN202010694672.2A patent/CN113345754B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102254717A (en) * | 2011-06-23 | 2011-11-23 | 上海天灵开关厂有限公司 | Stage-type load switch operation mechanism |
| CN104217887A (en) * | 2014-09-23 | 2014-12-17 | 浙江华仪电器科技有限公司 | Energy storing outputting mechanism applied to spring operating mechanism |
| WO2016045028A1 (en) * | 2014-09-25 | 2016-03-31 | Abb技术有限公司 | Vacuum load switch |
| WO2018076455A1 (en) * | 2016-10-31 | 2018-05-03 | 国家电网公司 | Servo-drive isolation circuit breaker |
| CN206421984U (en) * | 2017-01-13 | 2017-08-18 | Abb瑞士股份有限公司 | Three-station |
| CN107293443A (en) * | 2017-08-11 | 2017-10-24 | 宇光电气有限公司 | A kind of vacuum load switch operating mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113345754B (en) | 2024-04-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201893269U (en) | High-voltage disconnector contact component | |
| US20230377824A1 (en) | Quick tripping device and circuit breaker | |
| CN113571374A (en) | Pole-mounted circuit breaker with built-in rotary isolating switch | |
| CN112886462A (en) | Environment-friendly gas insulated switch | |
| US10256066B2 (en) | Operation mechanism of circuit breaker | |
| CN101162659A (en) | Switch installation used for electrical power system | |
| CN113345754A (en) | Variable-force-arm switch operating mechanism, grounding switch and isolating switch | |
| CN103021728A (en) | Medium-voltage electric distribution apparatus | |
| CN109637885B (en) | Switch main shaft transmission device | |
| CN201215783Y (en) | Novel vacuum loaded switch | |
| US20240242910A1 (en) | Circuit breaker and quick tripping device thereof | |
| CN101834088B (en) | Vacuum arc-extinguishing device for ultrahigh-voltage isolation | |
| CN202423109U (en) | Connecting and driving device for vacuum circuit breaker | |
| CN201717184U (en) | Vacuum arc extinction device for ultrahigh voltage isolation | |
| CN211150413U (en) | Vacuum circuit breaker | |
| CN202172032U (en) | High voltage grounding switch device with closing self-locking function | |
| CN210516610U (en) | One-way driving double-loop operating mechanism for vacuum isolating switch | |
| CN114038708A (en) | Single-phase circuit breaker transmission mechanism and operating mechanism with same | |
| CN113745020A (en) | C-GIS miniaturized high-voltage vacuum circuit breaker | |
| KR102680846B1 (en) | Multi-switching driving assembly | |
| KR20130094779A (en) | Drive for a switch disconnector with c o switching capacity | |
| CN212517013U (en) | Isolating switch | |
| JPH06318422A (en) | High-voltage switch | |
| US3047685A (en) | High voltage disconnect switch | |
| US20130192969A1 (en) | Switching apparatus for a low-voltage electrical switching device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |