CN215451261U - Special operating mechanism for GIS isolating switch - Google Patents
Special operating mechanism for GIS isolating switch Download PDFInfo
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- CN215451261U CN215451261U CN202121324166.0U CN202121324166U CN215451261U CN 215451261 U CN215451261 U CN 215451261U CN 202121324166 U CN202121324166 U CN 202121324166U CN 215451261 U CN215451261 U CN 215451261U
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- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The utility model relates to the technical field of GIS isolating switches, in particular to a special operating mechanism for a GIS isolating switch. The utility model provides a special operating mechanism for GIS isolator, includes the output shaft, its characterized in that: one side of the output shaft is connected with one end of a spring driving device, the other end of the spring driving device is connected with a sliding groove through a connecting shaft, the other side of the output shaft is connected with a shaft through a transmission structure, one end of a shifting fork is sleeved on the shaft, the other end of the shifting fork is provided with a groove, one end of a connecting rod is arranged in the groove, and the other end of the connecting rod is connected with an electric driving device. Compared with the prior art, the reliability is high, and the respective defects of the electric mechanism and the spring mechanism are avoided while the advantages of the electric mechanism and the spring mechanism are combined. And compact structure, small, reduced GIS overall cost.
Description
Technical Field
The utility model relates to the technical field of GIS isolating switches, in particular to a special operating mechanism for a GIS isolating switch.
Background
Although the isolating switch does not have the capability of switching load current or short-circuit current, in some special occasions, the current with extremely low voltage difference, such as bus transfer current, needs to be switched. Because of the voltage difference, an arc may be generated between the switch contacts. When the electric operating mechanism is used for driving the switch contact to open, electric arcs can be generated. Due to the slow speed and slow motion of the contacts, the arcing time is long and the arcing may cause unacceptable damage to the contacts. In actual production, in order to overcome this problem, a spring mechanism is often used to operate the contacts of the disconnecting switch to open and close. The spring mechanism has high speed and fast action, so the arc burning time of the switch contact is short, and the burning loss of the switch contact is small. However, the spring mechanism is subject to large vibrations, large impact forces, and loud noises during operation, which may cause some side effects. The vibrations can cause malfunction of electrical components and the whole transmission circuit needs higher mechanical strength. Some parts are easy to damage due to impact, so that the operation reliability is lower than that of an electric mechanism.
Disclosure of Invention
The utility model provides a special operating mechanism for a GIS isolating switch, which overcomes the defects of the prior art, wherein in the whole stroke of opening and closing a switch contact, only a small section of stroke of just separating the contact is driven by a spring mechanism so as to obtain higher speed to extinguish electric arc as soon as possible, and the rest stroke is driven by an electric mechanism so as to reduce the side effect brought by the spring mechanism. Combines the advantages of the electric mechanism and the spring mechanism, and avoids the respective disadvantages.
In order to achieve the purpose, the special operating mechanism for the GIS isolating switch is designed, comprises an output shaft and is characterized in that: one side of the output shaft is connected with one end of a spring driving device, the other end of the spring driving device is connected with a sliding groove through a connecting shaft, the other side of the output shaft is connected with a shaft through a transmission structure, one end of a shifting fork is sleeved on the shaft, the other end of the shifting fork is provided with a groove, one end of a connecting rod is arranged in the groove, and the other end of the connecting rod is connected with an electric driving device.
The width of the groove is larger than the diameter of the connecting rod.
Spring drive device include spring, first pole socket, guide bar, second pole socket, output shaft front side cover establish connecting lever one end, the one end of first pole socket is connected to the connecting lever other end, guide bar one end is connected to the other end of first pole socket, the second pole socket one end is connected to the guide bar other end, the second pole socket other end passes through the connecting axle and connects the sliding tray, is located the guide bar outside and is equipped with the spring.
One end of the spring is connected with the first rod seat, and the other end of the spring is connected with the second rod seat.
The sliding groove is positioned on the fixing piece in the operating mechanism.
The transmission structure comprises a first gear and a second gear, the first gear is sleeved on the rear side of the output shaft, the second gear which is meshed with the first gear is arranged above the first gear, and a shaft is arranged at the center of the second gear.
The electric driving device comprises a motor, a gear set, a screw rod and a nut, wherein the other end of the connecting rod is connected with the nut, the nut is sleeved at one end of the screw rod, the other end of the screw rod is connected with the motor through the gear set, one end of the screw rod is provided with threads, and the structure of the threads is matched with that of the nut.
The nut and the connecting rod are of an integrated structure.
The number of the shifting forks, the connecting rods and the electric driving devices is two, and the two shifting forks, the connecting rods and the electric driving devices are symmetrically arranged in the left-right direction.
The method for driving the output shaft to switch on and switch off by the spring driving device and the electric driving device specifically comprises the following steps:
s1, closing: the motor rotates to drive the connecting rod to linearly move along the thread, the connecting rod pushes the shifting fork to rotate, the shifting fork drives the output shaft to rotate, the output shaft drives the contact to complete closing, meanwhile, the spring is compressed to complete energy storage, and the spring keeps a compressed state after passing through a dead point;
s2, opening: the motor rotates reversely, the connecting rod moves reversely to push the shifting fork to drive the output shaft to rotate reversely, so that the spring is driven to release after passing a dead point, the released spring pushes the output shaft to rotate quickly, so that the contact is driven to be opened quickly, after the spring is released, the motor continues to rotate reversely to drive the connecting rod to move reversely along the thread, the connecting rod pushes the shifting fork to rotate, and the shifting fork drives the output shaft to rotate reversely, so that the contact is driven to complete the rest opening stroke.
Compared with the prior art, the utility model has high reliability, combines the advantages of the electric mechanism and the spring mechanism and avoids the respective disadvantages. And compact structure, small, reduced GIS overall cost.
Drawings
Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention.
Fig. 2 is a schematic structural diagram of embodiment 2 of the present invention.
Referring to fig. 1, wherein 1 is an output shaft, 2 is a spring, 3 is a first lever seat, 4 is a guide lever, 5 is a second lever seat, 6 is a connecting shaft, 7 is a sliding groove, 8 is a motor, 9 is a gear set, 10 is a lead screw, 11 is a nut, 12 is a connecting rod, 13 is a fork, 14 is a first gear, 15 is a second gear, 16 is a shaft, 17 is a groove, and 18 is a thread.
Detailed Description
The utility model is further illustrated below with reference to the accompanying drawings.
Example 1:
as shown in fig. 1, one side of an output shaft 1 is connected with one end of a spring driving device, the other end of the spring driving device is connected with a sliding groove 7 through a connecting shaft 6, the other side of the output shaft 1 is connected with a shaft 16 through a transmission structure, one end of a shifting fork 13 is sleeved on the shaft 16, the other end of the shifting fork 13 is provided with a groove 17, one end of a connecting rod 12 is arranged in the groove 17, and the other end of the connecting rod 12 is connected with an electric driving device.
The width of the groove 17 is greater than the diameter of the connecting rod 12.
Spring drive unit includes spring 2, first pole socket 3, guide bar 4, second pole socket 5, 1 front side cover of output shaft establish connecting lever 19 one end, the one end of first pole socket 3 is connected to the connecting lever 19 other end, 4 one ends of guide bar are connected to the other end of first pole socket 3, 5 one end of second pole socket are connected to the 4 other ends of guide bar, the 5 other ends of second pole socket pass through connecting axle 6 and connect sliding tray 7, lie in the 4 outsides of guide bar and be equipped with spring 2.
One end of the spring 2 is connected with the first rod seat 3, and the other end of the spring 2 is connected with the second rod seat 5.
The sliding groove 7 is positioned on a fixing part in the operating mechanism.
The transmission structure comprises a first gear 14 and a second gear 15, the first gear 14 is sleeved on the rear side of the output shaft 1, the second gear 15 meshed with the first gear 14 is arranged above the first gear 14, and a shaft 16 is arranged in the center of the second gear 15.
The electric driving device comprises a motor 8, a gear set 9, a screw rod 10 and a nut 11, the other end of a connecting rod 12 is connected with the nut 11, the nut 11 is sleeved at one end of the screw rod 10, the other end of the screw rod 10 is connected with the motor 8 through the gear set 9, one end of the screw rod 10 is provided with a thread 18, and the structure of the thread 18 is matched with that of the nut 11.
The nut 11 and the connecting rod 12 are of an integrated structure.
The structure of the connecting rod 12 is a cylindrical structure.
The guide rod 4 adopts a telescopic rod with a telescopic function, so that the spring 2 can be compressed and released.
The sliding groove 7 is positioned on any fixed component in the shell of the operating mechanism.
The output shaft 1 is rigidly connected with the first rod seat 3 through a crank arm 19, and the spring 2 is ensured to push the output shaft 1 to rotate.
The second rod seat 5 slides up and down along a straight line through the sliding groove 7, so that the spring 2 can follow in a free state in a pushing stroke section of the motor 8, and no extra moment is generated.
The number of the electric drive devices in this embodiment is one.
The method for driving the output shaft 1 to be switched on and switched off by the spring driving device and the electric driving device specifically comprises the following steps:
s1, closing: the motor 8 rotates and drives the screw rod 10 to rotate through the gear set 9, so that the nut 11 and the connecting rod 12 are driven to linearly move along the thread 18, the connecting rod 12 pushes the shifting fork 13 to rotate around the shaft 16, the shifting fork 13 drives the output shaft 1 to rotate through the second gear 15 and the first gear 14, the output shaft 1 drives the contact to complete closing, meanwhile, the spring 2 is compressed to complete energy storage, and the compressed state is kept after passing a dead point;
s2, opening: the motor 8 rotates reversely, the connecting rod 12 moves reversely to push the shifting fork 13 to drive the output shaft 1 to rotate reversely, so as to drive the spring 2 to release through a dead point, the released spring 2 pushes the output shaft 1 to rotate quickly, so as to drive the contact to open the brake quickly, after the spring 2 is released, the motor 8 continues to rotate reversely, and drives the nut 11 and the connecting rod 12 to move linearly along the thread 18 through the gear set 9 and the screw rod 10, the connecting rod 12 pushes the shifting fork 13 to rotate reversely around the shaft 16, so as to drive the output shaft 1 to rotate reversely, so as to drive the contact to complete the rest opening stroke.
In the rapid opening process of step S2, when the spring 2 drives the output shaft 1 to rotate rapidly, since the speed of the spring 2 is faster than the dragging speed of the motor 8, the rotation speed of the shift fork 13 is faster than the speed of the nut 11 and the connecting rod 12 in the same direction. At this time, the width clearance of the groove 17 larger than the diameter of the connecting rod 12 plays a yielding role, and the quick rotation of the shifting fork 13 is prevented from interfering with the nut 11 and the connecting rod 12.
Example 2:
in this example, only the differences from embodiment 1 are described, and the same portions as embodiment 1 will not be described again.
As shown in fig. 2, two forks 13, a connecting rod 12 and an electric driving device are respectively arranged on the left and right sides above the output shaft 1, and the two forks 13, the connecting rod 12 and the electric driving device are arranged in bilateral symmetry.
When the GIS combined electrical apparatus is internally provided with the disconnecting switch and the grounding switch, the disconnecting switch and the grounding switch can be respectively operated by the two shifting forks 13, the connecting rod 12 and the electric driving device of the embodiment. When the disconnecting switch or the grounding switch needs to be switched on or off, the shifting fork 13, the connecting rod 12, the electric driving device and the spring driving device on one side can be driven, and the switching on or off is completed by the method in the embodiment 1.
The utility model has compact structure and small volume, and reduces the overall cost of the GIS. In the whole stroke of the switch contact opening and closing, only a small section of stroke of just separating the contact is driven by the spring driving device to obtain a higher speed to extinguish the electric arc as soon as possible, and the rest stroke is driven by the electric driving device to reduce the side effect brought by the spring driving device. The advantages of the electric driving device and the spring driving device are combined, the respective defects are avoided, and the reliability is high.
Claims (10)
1. The utility model provides a special operating mechanism for GIS isolator, includes the output shaft, its characterized in that: one side of the output shaft (1) is connected with one end of a spring driving device, the other end of the spring driving device is connected with a sliding groove (7) through a connecting shaft (6), the other side of the output shaft (1) is connected with a shaft (16) through a transmission structure, one end of a shifting fork (13) is sleeved on the shaft (16), the other end of the shifting fork (13) is provided with a groove (17), one end of a connecting rod (12) is arranged in the groove (17), and the other end of the connecting rod (12) is connected with an electric driving device.
2. The special operating mechanism for the GIS disconnecting switch according to claim 1, characterized in that: the width of the groove (17) is larger than the diameter of the connecting rod (12).
3. The special operating mechanism for the GIS disconnecting switch according to claim 1, characterized in that: spring drive device include spring (2), first rod seat (3), guide bar (4), second rod seat (5), output shaft (1) front side cover establish connecting lever (19) one end, the one end of first rod seat (3) is connected to the connecting lever (19) other end, guide bar (4) one end is connected to the other end of first rod seat (3), second rod seat (5) one end is connected to the guide bar (4) other end, sliding tray (7) are connected through connecting axle (6) to second rod seat (5) other end, it is equipped with spring (2) to be located guide bar (4) outside.
4. The special operating mechanism for the GIS disconnecting switch according to claim 3, characterized in that: one end of the spring (2) is connected with the first rod seat (3), and the other end of the spring (2) is connected with the second rod seat (5).
5. The special operating mechanism for the GIS disconnecting switch according to claim 1 or 3, characterized in that: the sliding groove (7) is positioned on the fixing piece in the operating mechanism.
6. The special operating mechanism for the GIS disconnecting switch according to claim 1, characterized in that: the transmission structure comprises a first gear (14) and a second gear (15), the first gear (14) is sleeved on the rear side of the output shaft (1), the second gear (15) which is meshed with the first gear (14) is arranged above the first gear (14), and a shaft (16) is arranged in the center of the second gear (15).
7. The special operating mechanism for the GIS disconnecting switch according to claim 1, characterized in that: the electric driving device comprises a motor (8), a gear set (9), a screw rod (10) and a nut (11), wherein the other end of a connecting rod (12) is connected with the nut (11), the nut (11) is sleeved at one end of the screw rod (10), and the other end of the screw rod (10) is connected with the motor (8) through the gear set (9).
8. The dedicated operating mechanism for the GIS isolating switch according to claim 7, wherein: one end of the screw rod (10) is provided with a thread (18), and the structure of the thread (18) is matched with that of the nut (11).
9. The dedicated operating mechanism for the GIS isolating switch according to claim 7, wherein: the nut (11) and the connecting rod (12) are of an integrated structure.
10. The special operating mechanism for the GIS disconnecting switch according to claim 1, characterized in that: the number of the shifting forks (13), the connecting rods (12) and the electric driving devices is two, and the two shifting forks (13), the connecting rods (12) and the electric driving devices are symmetrically arranged in the left-right direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121324166.0U CN215451261U (en) | 2021-06-15 | 2021-06-15 | Special operating mechanism for GIS isolating switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121324166.0U CN215451261U (en) | 2021-06-15 | 2021-06-15 | Special operating mechanism for GIS isolating switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215451261U true CN215451261U (en) | 2022-01-07 |
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ID=79711195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121324166.0U Active CN215451261U (en) | 2021-06-15 | 2021-06-15 | Special operating mechanism for GIS isolating switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215451261U (en) |
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2021
- 2021-06-15 CN CN202121324166.0U patent/CN215451261U/en active Active
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