CN218769167U - Protection device for preventing on-load disconnecting link from locking - Google Patents
Protection device for preventing on-load disconnecting link from locking Download PDFInfo
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- CN218769167U CN218769167U CN202221610682.4U CN202221610682U CN218769167U CN 218769167 U CN218769167 U CN 218769167U CN 202221610682 U CN202221610682 U CN 202221610682U CN 218769167 U CN218769167 U CN 218769167U
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- lock pin
- lock
- hole
- transmission rod
- protection device
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- 230000005540 biological transmission Effects 0.000 claims abstract description 50
- 230000005284 excitation Effects 0.000 claims description 17
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims 4
- 230000000903 blocking effect Effects 0.000 claims 1
- 230000007246 mechanism Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 206010015856 Extrasystoles Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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Abstract
The utility model relates to a high-voltage circuit switch field discloses a prevent to take load switch-off shutting protection device, the switch includes the transfer line, protection device includes: the limiting device is connected with the transmission rod, rotates along with the transmission rod and is provided with a lock hole; the lock pin penetrates through the transmission assembly, the transmission assembly drives the lock pin to move linearly, when the limiting device rotates to a certain angle, the lock hole is opposite to the lock pin, the lock pin is inserted into the lock hole to abut against the transmission rod, the transmission rod is fixed, and the problem that how to avoid the misoperation to cause the disconnecting link with load to generate power connection damage is solved.
Description
Technical Field
The utility model relates to a high-voltage circuit switch technical field especially relates to a prevent to take load switch-off shutting protection device.
Background
The function of switch is used for keeping apart the power, overhauls high-pressure equipment and live equipment disconnection, makes to overhaul equipment and live equipment have an obvious disconnection point, and the change of operation mode can be realized to switch and switch cooperation. Outdoor trigeminy formula switch or scissors formula switch that domestic transformer substation adopted all have the possibility of taking load to pull out the switch, once take place to take load to pull out the switch, will produce powerful electric arc, form short circuit and burn out switch and distribution interval, directly endanger personal safety, cause the mesh accident. Therefore, how to avoid the harm caused by pulling the knife switch with load is the problem to be solved at present.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a: in order to solve the problem that the misoperation is avoided to cause the on-load disconnecting link to generate the power-on hazard, a protection device for preventing the on-load disconnecting link from being locked is provided, and the problem of misoperation is avoided by fixing the on-load disconnecting link through a lock hole and a corresponding lock pin.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
in some embodiments of the present application, a protection device for preventing the locking of a load-carrying disconnecting link is provided, the disconnecting link comprising a transmission rod, the protection device comprising: the limiting device is connected with the transmission rod, rotates along with the transmission rod and is provided with a lock hole; the lock pin penetrates through the transmission assembly, the transmission assembly drives the lock pin to move linearly, when the limiting device rotates to a certain angle, the lock hole is opposite to the lock pin, the lock pin is inserted into the lock hole and abuts against the transmission rod, and the transmission rod is fixed.
In some embodiments of the present application, a transmission assembly comprises: the two fixing plates are oppositely arranged in the moving direction of the lock pin, wherein a through hole is formed in the first fixing plate close to the lock hole, and the lock pin penetrates through the through hole; the stop ring is a bulge of the surface of the lock pin and is positioned between the two fixing plates, and the diameter of the stop ring is larger than that of the through hole; excitation coil and resilient means, excitation coil with the resilient means cover is established on the locking pin, and be located between two fixed plates, the electromagnetic force of excitation coil is greater than resilient means's tension adds drive assembly's resistance.
In some embodiments of the present application, further comprising: the electromagnetic circuit is a direct current circuit, a switch auxiliary contact and the magnet exciting coil are connected in the electromagnetic circuit in series, and the switch auxiliary contact is used for controlling the switch of the magnet exciting coil.
In some embodiments of the present application, the fixed plate includes four pin holes through which the switching device is mounted on a stationary table.
In some embodiments of the present application, the elastic means is disposed between the first fixing plate and the stopper ring, the exciting coil is disposed between the second fixing plate and the stopper ring, and an electromagnetic force of the exciting coil is opposite to a tension direction of the elastic means.
In some embodiments of the present application, the position limiting device is an arc-shaped structure, and the transmission rod is located inside the arc-shaped structure.
In some embodiments of the present application, the limiting device is made of a 200 × 50 × 15mm steel plate, the radian of the limiting device is 180 °, and the outer diameter of the limiting device is 127mm; the lock hole is 1mm larger than the diameter of the lock pin.
The beneficial effects of the utility model reside in that:
a limiting device is arranged on the disconnecting link transmission mechanism, the limiting device moves directionally along with the disconnecting link, and when the disconnecting link is in a closed position, a lock hole of the limiting device corresponds to the lock pin; a spring electromagnetic lock is additionally arranged on the disconnecting link transmission mechanism fixing platform, and when the excitation coil is electrified, the lock pin system overcomes the tension of the unlocking spring and inserts the lock pin into the lock hole; the excitation coil is arranged on the operation loop to realize the operation of direct current power transmission, when the circuit switch is in a switch-on position, the excitation coil is electrified, the lock pin is immediately inserted into the lock hole, and the locking process is finished; the current prevent maloperation use program lock realization and prevent load switch-disconnector, if the switch is closing the position, the program lock is opened and to be able to realize manual or electronic circuit load side switch-disconnector that pulls open, the use of this device, if the switch is closing the position, even open the program lock, the switch also can not be pulled open, the effectual arc light of having avoided load switch-disconnector production forms the arc light short circuit, injures people or will not have a power failure the circuit that has a power failure. The device is simple, the material consumption is few, control simple, use safe and reliable.
Drawings
Fig. 1 is a schematic structural view of a safety device of the present invention;
fig. 2 is a schematic structural view of the transmission rod and the positioning device of the present invention;
fig. 3 is a schematic diagram of the electromagnetic circuit according to the present invention.
The mark in the figure is: 100. a transmission rod; 200. a limiting device; 210. a lock hole; 300. a lock pin; 411. a first fixing plate; 412. a second fixing plate; 413. a through hole; 420. a stop ring; 430. a field coil; 440. an elastic device; 500. an electromagnetic circuit; 510. and switching the auxiliary contact.
Detailed Description
The following detailed description of the embodiments of the present invention is made with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present application.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in this application will be understood to be a specific case for those of ordinary skill in the art.
In some embodiments of the present application, as shown in fig. 1, a device for preventing the locking of a loaded disconnecting link is proposed, wherein the loaded disconnecting link comprises a transmission rod 100, and the transmission rod 100 is a transmission mechanism of the disconnecting link, so that the disconnecting link can be fixed by fixing the transmission rod 100, thereby preventing the faulty operation.
As shown in fig. 1 and 2, the protection device includes a position limiting device 200, the position limiting device 200 is connected to the transmission rod 100, the position limiting device 200 rotates with the transmission rod 100, and a locking hole 210 is formed in the position limiting device 200, in a specific embodiment, the position limiting device 200 is an arc-shaped structure, the transmission rod 100 is located inside the arc-shaped structure, in addition, in order to improve the strength of the position limiting device 200 and the transmission rod 100 of the knife switch, the position limiting device 200 can be welded after turning according to the outer circle shape of the transmission rod 100, wherein the locking hole 210 is formed in the surface of the position limiting device 200 and is communicated with the external transmission rod 100 of the position limiting device 200.
Specifically, the limiting device 200 is made of a steel plate with the diameter of 200 × 50 × 15mm, the radian of the limiting device 200 is 180 °, and the outer diameter of the limiting device 200 is 127mm.
In some embodiments of the present application, the protection device further includes a lock pin 300 and a transmission assembly, wherein the lock pin 300 is disposed through the transmission assembly, the transmission assembly drives the lock pin 300 to move, the lock pin 300 translates along a length direction of the lock pin 300, correspondingly, the limiting device 200 is a rotating structure, when the limiting assembly rotates in a certain direction, the lock hole 210 on the limiting device 200 and the lock pin 300 are disposed opposite to each other, when the lock pin 300 translates forward under the transmission of the transmission assembly, the lock pin is inserted into the lock hole 210, passes through the lock hole 210 and abuts against the transmission rod 100, so as to prevent the transmission rod 100 from rotating, thereby locking the belt-loaded disconnecting link and preventing the belt-loaded disconnecting link from being closed.
Specifically, the diameter of the lock hole 210 is 1mm larger than that of the lock pin 300, so that the lock pin 300 can be smoothly inserted into the lock hole 210.
In some embodiments of the present application, the transmission assembly includes two fixing plates and a stop ring 420, wherein the two fixing plates are a first fixing plate 411 and a second fixing plate 412, respectively, and the two fixing plates are oppositely disposed in a moving direction of the lock pin 300, wherein the first fixing plate 411 is located at a position relatively close to the lock hole 210, the second fixing plate 412 is located at a position relatively far away from the lock hole 210, a through hole 413 is formed in the first fixing plate 411, and the lock pin 300 passes through the through hole 413; in addition, the stop ring 420 is a protrusion on the surface of the lock pin 300 and is located between the two fixing plates, the diameter of the stop ring 420 is larger than that of the through hole 413, the lock pin 300 moves at the through hole 413, and the stop ring 420 cannot pass through the through hole 413 and is used for controlling the moving range of the lock pin 300 and preventing all the lock pin 300 from sliding off from the through hole 413.
The transmission assembly further comprises an excitation coil 430 and an elastic device 440, the excitation coil 430 and the elastic device 440 are sleeved on the lock pin 300 and are located between the two fixing plates, and the electromagnetic force of the excitation coil 430 is greater than the tension of the elastic device 440 and the resistance of the transmission assembly; specifically, the elastic means 440 is disposed between the first fixing plate 411 and the stopper ring 420, the exciting coil 430 is disposed between the second fixing plate 412 and the stopper ring 420, and the electromagnetic force of the exciting coil 430 and the tension of the elastic means 440 are in opposite directions.
In some embodiments, the lock pin 300 is 100mm in length and the stop ring is positioned one-half of the lock pin 300 to transmit the tension of the unlocking spring to the lock pin 300.
It should be noted that the operating principle of the transmission assembly is as follows: when the exciting coil 430 is not energized, the exciting coil 430 does not have an electromagnetic force, and the tension of the elastic means 440 supports the stopper ring 420 and the first fixing plate 411 with a distance that the lock pin 300 is not inserted into the lock hole 210, so that the elastic means 440 serves to maintain the original position of the lock pin 300; when the exciting coil 430 is energized, the electromagnetic force of the exciting coil 430 pushes the lock pin 300 and resists the tension of the elastic means 440, so that the lock pin 300 moves towards the lock hole 210, thereby the lock pin 300 fixes the transmission rod 100 and prevents the on-load disconnecting link from rotating.
In some embodiments of the present application, as shown in fig. 3, an electromagnetic circuit 500 is further provided for driving the excitation coil 430, the electromagnetic circuit 500 is a dc circuit, a switch auxiliary contact 510 and the excitation coil 430 are connected in series in the electromagnetic circuit 500, the switch auxiliary contact 510 is used for controlling the switching of the excitation coil 430, and the excitation coil 430 incorporates a switch normally closed auxiliary contact in the open electromagnetic circuit 500, so that selective excitation is realized, and the switch closing is more accurate.
In some embodiments of the present application, the fixed plate includes four pin holes through which the switching device is mounted to the stationary table.
Those of ordinary skill in the art will understand that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A protection device for preventing the blocking of an on-load disconnecting link, wherein said disconnecting link comprises a transmission rod, said protection device comprising:
the limiting device is connected with the transmission rod, rotates along with the transmission rod and is provided with a lock hole;
the lock pin penetrates through the transmission assembly, the transmission assembly drives the lock pin to move linearly, when the limiting device rotates to a certain angle, the lock hole is opposite to the lock pin, the lock pin is inserted into the lock hole and abuts against the transmission rod, and the transmission rod is fixed.
2. The protective device of claim 1, wherein the transmission assembly comprises:
the two fixing plates are oppositely arranged in the moving direction of the lock pin, a through hole is formed in the first fixing plate close to the lock hole, and the lock pin penetrates through the through hole;
the stop ring is a bulge of the surface of the lock pin and is positioned between the two fixing plates, and the diameter of the stop ring is larger than that of the through hole;
excitation coil and resilient means, excitation coil with the resilient means cover is established on the lock pin, and be located between two fixed plates, the electromagnetic force of excitation coil is greater than resilient means's tension adds drive assembly's resistance.
3. The protection device of claim 2, further comprising:
the electromagnetic circuit is a direct current circuit, a switch auxiliary contact and the magnet exciting coil are connected in the electromagnetic circuit in series, and the switch auxiliary contact is used for controlling the switch of the magnet exciting coil.
4. The protective apparatus of claim 2 wherein the mounting plate includes four pin holes through which the switching device is mounted to the stationary table.
5. The protection device of claim 2, wherein the elastic means is disposed between the first fixing plate and the stop ring, the exciting coil is disposed between the second fixing plate and the stop ring, and an electromagnetic force of the exciting coil is opposite to a tension direction of the elastic means.
6. The protective device of claim 1 wherein the stop means is an arcuate structure and the actuator rod is located within the arcuate structure.
7. A protective device according to claim 6 wherein the stop means is formed from 200 x 50 x 15mm steel plate, the arc of the stop means is 180 ° and the outer diameter of the stop means is 127mm; the lock hole is 1mm larger than the diameter of the lock pin.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221610682.4U CN218769167U (en) | 2022-06-23 | 2022-06-23 | Protection device for preventing on-load disconnecting link from locking |
| JP2022002444U JP3239959U (en) | 2022-06-23 | 2022-07-26 | protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221610682.4U CN218769167U (en) | 2022-06-23 | 2022-06-23 | Protection device for preventing on-load disconnecting link from locking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218769167U true CN218769167U (en) | 2023-03-28 |
Family
ID=84227501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221610682.4U Withdrawn - After Issue CN218769167U (en) | 2022-06-23 | 2022-06-23 | Protection device for preventing on-load disconnecting link from locking |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP3239959U (en) |
| CN (1) | CN218769167U (en) |
-
2022
- 2022-06-23 CN CN202221610682.4U patent/CN218769167U/en not_active Withdrawn - After Issue
- 2022-07-26 JP JP2022002444U patent/JP3239959U/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| JP3239959U (en) | 2022-11-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20230328 Effective date of abandoning: 20231211 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20230328 Effective date of abandoning: 20231211 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |