CN114284872B - External emergency brake separating device of switch cabinet - Google Patents
External emergency brake separating device of switch cabinet Download PDFInfo
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- CN114284872B CN114284872B CN202111235170.4A CN202111235170A CN114284872B CN 114284872 B CN114284872 B CN 114284872B CN 202111235170 A CN202111235170 A CN 202111235170A CN 114284872 B CN114284872 B CN 114284872B
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- push rod
- switch cabinet
- emergency brake
- guide sleeve
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- 238000007906 compression Methods 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 description 8
- 238000009434 installation Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000003825 pressing Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
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Abstract
The invention discloses an external emergency brake-separating device of a switch cabinet, and aims to provide a device capable of performing emergency brake-separating on a faulty switch cabinet in a safe distance range so as to ensure personal safety of staff; but also can protect the buttons of the switch cabinet from being damaged by pressure. The automatic brake device comprises a support frame, a transverse support arranged on the support frame and a floating type pushing brake separating mechanism arranged on the transverse support, wherein the floating type pushing brake separating mechanism comprises an electric push rod, a remote controller used for controlling the electric push rod to work, a fixed guide sleeve and a detection sensor, the fixed guide sleeve is arranged on the transverse support, the electric push rod comprises a shell, a guide sleeve and a push rod arranged in the guide sleeve, a sensing piece matched with the detection sensor is arranged on the shell, a front limit part and a rear limit part are arranged on the guide sleeve, the guide sleeve is inserted in the fixed guide sleeve and can slide along the fixed guide sleeve, and a pre-compression spring is further arranged between the fixed guide sleeve and the front limit part.
Description
Technical Field
The invention relates to a switch cabinet brake separating device, in particular to an external emergency brake separating device of a switch cabinet.
Background
When the control loop breaks down, the operation personnel of the transformer substation are required to go to the site to carry out emergency brake opening. The cabinet door of the existing switch cabinet body is divided into two types, namely a cabinet door with an emergency brake-separating button and a cabinet door without the emergency brake-separating button, wherein the switch cabinet with the emergency brake-separating button on the cabinet door can realize emergency brake-separating by pressing the emergency brake-separating button under the condition that the cabinet door of the switch cabinet is closed; the switch cabinet without the emergency opening button on the cabinet door needs to be opened, and then the opening is realized by pressing the opening button in the switch cabinet. Therefore, no matter the cabinet door of the cabinet body of the switch cabinet is provided with the emergency opening button, an operator is required to approach the switch cabinet to operate, and in the process of the control loop disconnection fault of the switch cabinet, the switch cabinet can be exploded due to overlarge fault current, so that the personal safety of operators is endangered.
Disclosure of Invention
The invention aims to provide a method for emergency opening of a fault switch cabinet in a safe distance range so as to ensure personal safety of staff; but also can protect the buttons of the switch cabinet from being damaged by pressure.
The technical scheme of the invention is as follows:
The utility model provides an external urgent brake device that breaks of cubical switchboard, includes the support frame, sets up the horizontal support on the support frame and set up the floating type pushing brake mechanism that pushes away on the horizontal support, floating type pushing brake mechanism includes electric putter, the remote controller that is used for controlling electric putter work, fixed uide bushing and the detection sensor of setting on the horizontal support, electric putter includes casing, guide pin bushing and is located the push rod of guide pin bushing, and the front end of push rod stretches out by the front end of guide pin bushing, be equipped with on the casing with detection sensor complex sensing piece, be equipped with preceding spacing portion and back spacing portion on the guide pin bushing, the guide pin bushing inserts and establishes in fixed uide bushing and can slide along fixed uide bushing, detection sensor, sensing piece, back spacing portion, fixed uide bushing and preceding spacing portion are in proper order partial along the direction of movement of push rod, still be equipped with the pre-compression spring between fixed uide bushing and the preceding spacing portion, back spacing portion supports on the terminal surface of fixed uide bushing under the effect of pre-compression spring. The external emergency brake-separating device of the switch cabinet can be used for emergency brake-separating of the faulty switch cabinet in a safe distance range, so that the personal safety of staff is ensured; but also can avoid the external emergency brake separating device of the switch cabinet from crushing the buttons so as to protect the buttons of the switch cabinet.
As the preference, the floating type pushing brake separating mechanism further comprises a knob limiting assembly, wherein the knob limiting assembly comprises a mounting bracket fixed on the transverse bracket, a limiting disc arranged on the mounting bracket and a limiting column arranged on the limiting disc, the limiting disc is perpendicular to the axis of the push rod, a first push rod through hole is formed in the limiting disc, and the limiting column is parallel to the push rod. The knob limiting assembly is applied to the switch cabinet with the emergency brake-off button on the cabinet door, and the rotation of the emergency brake-off button on the cabinet door is limited through the knob limiting assembly, so that the emergency brake-off button on the cabinet door is prevented from rotating; so as to ensure that the push rod of the electric push rod can smoothly press the emergency brake-separating button and realize the emergency brake-separating of the switch cabinet.
Preferably, the mounting bracket is provided with a mounting plate, a plurality of arc-shaped through holes distributed around the periphery of the mounting plate are formed in the mounting plate, the circle centers of the arc-shaped through holes are coincident with the axis of the mounting plate, the axis of the mounting plate is parallel or coincident with the axis of the push rod, the limiting plate is mounted on the mounting plate through a connecting bolt, the connecting bolt penetrates through the arc-shaped through holes, and a second push rod through hole is formed in the mounting plate. Therefore, the limiting disc and the push rod are convenient to install and replace; and the limiting disc can be rotated by unscrewing the connecting bolt, so that the circumferential position of the push rod is adjusted, and then the connecting bolt is locked, so that the emergency brake release button on the cabinet door can be locked conveniently.
Preferably, the device also comprises a lower bracket arranged on the supporting frame, and the lower bracket is provided with a switch type magnetic seat. Therefore, the magnetic force can be adsorbed on the cabinet body or the cabinet door of the switch cabinet through the switch type magnetic force seat, so that the stability of the support frame is improved.
Preferably, the guide sleeve is provided with a hoop, and the hoop forms the front limiting part. Thus, the actual production and manufacturing of the front limiting part are facilitated.
Preferably, a limit step is formed between the shell and the rear end of the guide sleeve, and the limit step forms the rear limit part. Thus, the actual production and manufacturing of the rear limiting part are facilitated.
Preferably, the detection sensor is a proximity switch, and the sensing member is a metal member.
Preferably, the support frame comprises a bottom frame, a stand column arranged on the bottom frame, an upper sliding seat sleeve lifting along the stand column and a locking bolt arranged on the upper sliding seat sleeve, and the transverse support is arranged on the upper sliding seat sleeve. In this way, the height of the transverse brackets can be adjusted as required.
Preferably, the upper sliding seat sleeve is provided with transverse guide holes which are horizontally distributed, the transverse support comprises transverse guide rods sliding along the transverse guide holes, and the upper sliding seat sleeve is provided with locking bolts for locking the transverse guide rods. Thus, the horizontal position of the transverse bracket can be adjusted according to the requirement.
Preferably, the transverse guide bar is parallel to the push rod.
Preferably, the chassis is a tripod.
Preferably, the detection sensor is fixed to the transverse bracket by a mounting bolt. Thus, the installation and the disassembly of the detection sensor are convenient.
Preferably, the fixed guide sleeve is fixed on the transverse bracket through a mounting bolt. Thus, the installation and the disassembly of the fixed guide sleeve are convenient.
Preferably, the sensing member is fixed to the housing by a mounting bolt. Therefore, the induction piece is convenient to install and detach.
The beneficial effects of the invention are as follows: the emergency brake separation can be carried out on the faulty switch cabinet in a safe distance range, so that the personal safety of staff is ensured; but also can avoid the external emergency brake separating device of the switch cabinet from crushing the buttons so as to protect the buttons of the switch cabinet.
Drawings
Fig. 1 is a schematic structural view of an external emergency brake release device of a switch cabinet according to the present invention.
Fig. 2 is a schematic diagram of a part of a floating pushing brake release mechanism of an external emergency brake release device of a switch cabinet according to the present invention.
Fig. 3 is a schematic structural view of the external emergency brake release device of the switch cabinet in actual use.
In the figure:
the device comprises a support frame 1, a bottom frame 1.1, upright posts 1.2 and an upper sliding seat sleeve 1.3;
A transverse bracket 2 and a transverse guide rod 2.1;
the electric push rod 3, the shell 3.1, the guide sleeve 3.2 and the push rod 3.3;
a detection sensor 4;
A sensing member 5;
A fixed guide sleeve 6;
Pre-compressing the compression spring 7;
A front limit part 8;
A mounting plate 9, an arc-shaped via hole 9.1;
A limit plate 10;
A limit post 11;
A lower bracket 12;
A switch-type magnetic base 13;
A rear limit portion 14;
A switch cabinet 15;
Emergency brake release button 16.
Detailed Description
For the purpose of making the technical solution embodiment, the technical solution and the advantages of the present invention more apparent, the technical solution of the embodiment of the present invention will be clearly explained and illustrated below with reference to the accompanying drawings, but the following embodiment is only a preferred embodiment of the present invention, not all embodiments. Based on the examples in the implementation manner, other examples obtained by a person skilled in the art without making creative efforts fall within the protection scope of the present invention.
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present solution and are not to be construed as limiting the solution of the present invention.
These and other aspects of embodiments of the invention will be apparent from and elucidated with reference to the description and drawings described hereinafter. In the description and drawings, particular implementations of embodiments of the invention are disclosed in detail as being indicative of some of the ways in which the principles of embodiments of the invention may be employed, but it is understood that the scope of the embodiments of the invention is not limited correspondingly. On the contrary, the embodiments of the invention include all alternatives, modifications and equivalents as may be included within the spirit and scope of the appended claims.
In the description of the present invention, it should be understood that the terms "thickness," "upper," "lower," "horizontal," "top," "bottom," "inner," "outer," "circumferential," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting the present invention. In the description of the present invention, the meaning of "a plurality" means at least two, for example, two, three, etc., unless explicitly defined otherwise, the meaning of "a number" means one or more.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
First embodiment: as shown in fig. 1 and 2, an external emergency brake release device of a switch cabinet comprises a support frame 1, a transverse support 2 arranged on the support frame and a floating pushing brake release mechanism arranged on the transverse support. The floating pushing brake separating mechanism comprises an electric push rod 3, a remote controller for controlling the electric push rod to work, a fixed guide sleeve 6 arranged on a transverse bracket and a detection sensor 4. The electric push rod comprises a shell 3.1, a guide sleeve 3.2 and a push rod 3.3 positioned in the guide sleeve. The front end of the push rod extends out of the front end of the guide sleeve, and the rear end of the push rod is connected with the shell. The shell is provided with an induction piece 5 matched with the detection sensor. In this embodiment, the detection sensor is a proximity switch, and the sensing element is a metal element. The guide sleeve is provided with a front limit part 8 and a rear limit part 14. The guide sleeve is inserted into the fixed guide sleeve and can slide along the fixed guide sleeve. The detection sensor, the sensing piece, the rear limiting part, the fixed guide sleeve and the front limiting part are sequentially arranged along the moving direction of the push rod. And a pre-compression spring 7 is further arranged between the fixed guide sleeve and the front limiting part, the pre-compression spring is sleeved on the guide sleeve, one end of the pre-compression spring is propped against the fixed guide sleeve, and the other end of the pre-compression spring is propped against the front limiting part. The rear limiting part is propped against the end face of the fixed guide sleeve under the action of the pre-compression spring.
The external emergency brake-separating device of the switch cabinet of the embodiment is specifically used as follows,
As shown in fig. 3, for a switch cabinet with an emergency brake release button on a cabinet door:
rotating the emergency brake-separating button to a final position to ensure that an inner ejector rod of the emergency brake-separating button of the original switch cabinet is in a lifting state;
The external emergency brake separating device of the switch cabinet is supported on the ground in front of the switch cabinet 15 through the support frame, and the position of the support frame is adjusted, so that the front end of the push rod of the electric push rod faces to the emergency brake separating button 16 on the cabinet door. Therefore, the emergency brake-separating button is pressed to realize the emergency brake-separating of the switch cabinet by controlling the push rod of the electric push rod to extend through the remote controller by workers in a safe area, so that the personal safety of the workers is ensured.
For the switch cabinet without an emergency brake separating button on the cabinet door:
Opening a cabinet door of the switch cabinet; the external emergency brake-separating device of the switch cabinet is supported on the ground in front of the switch cabinet through the support frame, and the position of the support frame is adjusted, so that the front end of the push rod of the electric push rod faces towards a brake-separating button in the switch cabinet. Therefore, the emergency brake release of the switch cabinet can be realized by controlling the push rod of the electric push rod to extend out and pressing the brake release button in the switch cabinet by a worker in a safety area through the remote controller, so that the personal safety of the worker is ensured.
On the other hand, in the process that the push rod of the electric push rod extends out, when the push rod props against an emergency brake-separating button on the cabinet door or props against a brake-separating button in the switch cabinet, and presses the emergency brake-separating button or the brake-separating button to realize emergency brake separation of the switch cabinet; after that, the push rod continues to extend, in the process, the front end of the push rod is fixed and cannot move forwards, the guide sleeve moves the fixed guide sleeve backwards and compresses the pre-compression spring, so that the sensing piece approaches the detection sensor, and when the detection sensor detects the sensing piece, the electric push rod automatically stops working; therefore, the emergency brake separating button or the brake separating button can be pressed down by the push rod, so that the emergency brake separating of the switch cabinet can be realized; but also can avoid the external emergency brake separating device of the switch cabinet from crushing the buttons so as to protect the buttons of the switch cabinet.
Specifically, as shown in fig. 1, the support frame comprises a bottom frame 1.1, a stand column 1.2 arranged on the bottom frame, an upper sliding seat sleeve 1.3 lifted along the stand column and a locking bolt arranged on the upper sliding seat sleeve. The transverse bracket is arranged on the upper sliding seat sleeve. In this way, the height of the transverse brackets can be adjusted as required. In this embodiment, the chassis is a tripod.
The upper slide seat sleeve is provided with transverse guide holes which are horizontally distributed. The transverse bracket comprises a transverse guide rod 2.1 sliding along the transverse guide hole, and a locking bolt for locking the transverse guide rod is arranged on the upper sliding seat sleeve. Thus, the horizontal position of the transverse bracket can be adjusted according to the requirement. In this embodiment, the transverse guide rod is parallel to the push rod.
The detection sensor is fixed on the transverse bracket through a mounting bolt. Thus, the installation and the disassembly of the detection sensor are convenient. The fixed guide sleeve is fixed on the transverse bracket through the mounting bolt. Thus, the installation and the disassembly of the fixed guide sleeve are convenient. The sensing piece is fixed on the shell through a mounting bolt. Therefore, the induction piece is convenient to install and detach.
And the guide sleeve is provided with a hoop which forms the front limiting part. Thus, the actual production and manufacturing of the front limiting part are facilitated.
As shown in fig. 2, a limit step is formed between the housing and the rear end of the guide sleeve, and the limit step constitutes the rear limit portion 14. Thus, the actual production and manufacturing of the rear limiting part are facilitated.
Further, as shown in fig. 1, the external emergency brake release device of the switch cabinet further comprises a lower bracket 12 arranged on the support frame, and a switch type magnetic seat 13 is arranged on the lower bracket. Therefore, the magnetic force can be adsorbed on the cabinet body or the cabinet door of the switch cabinet through the switch type magnetic force seat, so that the stability of the support frame is improved.
Further, as shown in fig. 1,2 and 3, the floating pushing brake separating mechanism further comprises a knob limiting assembly. The knob limiting assembly comprises a mounting bracket fixed on the transverse bracket, a limiting disc 10 arranged on the mounting bracket and a limiting column 11 arranged on the limiting disc. The limiting disc is perpendicular to the axis of the push rod, and a first push rod through hole is formed in the limiting disc. The limit column is parallel to the push rod. In this embodiment, the first push rod via holes and the limiting disc are coaxially distributed. The knob limiting assembly is applied to a switch cabinet with an emergency brake-off button on a cabinet door, after the emergency brake-off button rotates to a final position, so that an inner ejector rod of the emergency brake-off button of the original switch cabinet is in a lifting state, the rotation of the emergency brake-off button on the cabinet door can be limited through the knob limiting assembly, the rotation of the emergency brake-off button on the cabinet door is avoided, the concrete emergency brake-off button 16 is provided with a convex rib on the peripheral surface, and a limiting column 11 of the knob limiting assembly props against the convex rib of the emergency brake-off button to lock the emergency brake-off button, so that the rotation of the emergency brake-off button on the cabinet door is avoided; so as to ensure that the push rod of the electric push rod can smoothly press the emergency brake-separating button and realize the emergency brake-separating of the switch cabinet.
The mounting bracket is provided with a mounting plate 9. A plurality of arc-shaped through holes 9.1 are distributed on the mounting plate around the periphery of the mounting plate. The center of the arc-shaped through hole coincides with the axis of the mounting plate. The axis of the mounting plate is parallel or coincident with the axis of the push rod. The limiting plate is arranged on the mounting plate through a connecting bolt, and the connecting bolt penetrates through the arc-shaped through hole. In this embodiment, the number of connecting bolts is two, and two connecting bolts are symmetrically distributed on two sides of the limiting plate. The mounting plate is provided with a second push rod through hole. Therefore, the limiting disc and the push rod are convenient to install and replace; and the limiting disc can be rotated by unscrewing the connecting bolt, so that the circumferential position of the push rod is adjusted, and then the connecting bolt is locked, so that the emergency brake release button on the cabinet door can be locked conveniently.
The foregoing description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and any simple modification, variation and equivalent transformation of the above embodiment according to the technical substance of the present invention still fall within the scope of the technical solution of the present invention.
Claims (10)
1. The utility model provides an external urgent brake device of separating brake of cubical switchboard, its characterized in that includes the support frame, sets up the horizontal support on the support frame and sets up the floating type pushing brake mechanism on the horizontal support, floating type pushing brake mechanism includes electric putter, the remote controller that is used for controlling electric putter work, fixed uide bushing and the detection sensor of setting on the horizontal support, electric putter includes casing, guide pin bushing and the push rod that is located the guide pin bushing, and the front end of push rod stretches out by the front end of guide pin bushing, and the rear end and the casing of push rod are connected, be equipped with on the casing with detection sensor complex induction piece, be equipped with preceding spacing and back spacing on the guide pin bushing, the guide pin bushing inserts and establishes in fixed uide bushing and can slide along fixed uide bushing, detection sensor, back spacing, fixed uide bushing and preceding spacing are distributed in proper order along the direction of movement of push rod, still be equipped with the preshrinking spring between fixed uide bushing and the preceding spacing, back spacing is supported on the terminal surface of fixed uide bushing under preshrinking spring's effect.
2. The external emergency brake release device of the switch cabinet according to claim 1, wherein the floating pushing brake release mechanism further comprises a knob limiting assembly, the knob limiting assembly comprises a mounting bracket fixed on the transverse bracket, a limiting disc arranged on the mounting bracket and a limiting column arranged on the limiting disc, the limiting disc is perpendicular to the axis of the push rod, a first push rod through hole is formed in the limiting disc, and the limiting column is parallel to the push rod.
3. The external emergency brake separating device of the switch cabinet according to claim 2, wherein the mounting bracket is provided with a mounting plate, a plurality of arc-shaped through holes are circumferentially distributed on the mounting plate around the mounting plate, the circle centers of the arc-shaped through holes are coincident with the axis of the mounting plate, the axis of the mounting plate is parallel or coincident with the axis of the push rod, the limiting plate is mounted on the mounting plate through a connecting bolt, the connecting bolt penetrates through the arc-shaped through holes, and a second push rod through hole is formed in the mounting plate.
4. The external emergency brake release device of the switch cabinet according to claim 1, 2 or 3, further comprising a lower bracket arranged on the support frame, wherein the lower bracket is provided with a switch type magnetic seat.
5. The external emergency brake release device of the switch cabinet according to claim 1,2 or 3, wherein the guide sleeve is provided with a hoop, and the hoop forms the front limiting part.
6. The external emergency brake release device of the switch cabinet according to claim 1, 2 or 3, wherein a limit step is formed between the rear ends of the casing and the guide sleeve, and the limit step forms the rear limit part.
7. The external emergency brake release device of the switch cabinet according to claim 1,2 or 3, wherein the support frame comprises a bottom frame, a column arranged on the bottom frame, an upper sliding seat sleeve lifting along the column and a locking bolt arranged on the upper sliding seat sleeve, and the transverse support is arranged on the upper sliding seat sleeve.
8. The external emergency brake release device of the switch cabinet according to claim 7, wherein the upper slide seat sleeve is provided with transverse guide holes which are horizontally distributed, the transverse support comprises transverse guide rods sliding along the transverse guide holes, and the upper slide seat sleeve is provided with locking bolts for locking the transverse guide rods.
9. The external emergency brake release device of claim 8, wherein the transverse guide rod is parallel to the push rod.
10. The external emergency brake release device of the switch cabinet according to claim 1,2 or 3, wherein the detection sensor is fixed on the transverse bracket through a mounting bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111235170.4A CN114284872B (en) | 2021-10-22 | 2021-10-22 | External emergency brake separating device of switch cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111235170.4A CN114284872B (en) | 2021-10-22 | 2021-10-22 | External emergency brake separating device of switch cabinet |
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| Publication Number | Publication Date |
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| CN114284872A CN114284872A (en) | 2022-04-05 |
| CN114284872B true CN114284872B (en) | 2024-08-30 |
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| CN202111235170.4A Active CN114284872B (en) | 2021-10-22 | 2021-10-22 | External emergency brake separating device of switch cabinet |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN216311656U (en) * | 2021-10-22 | 2022-04-15 | 国网浙江省电力有限公司衢州供电公司 | External emergency brake separating device of switch cabinet |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6248825B2 (en) * | 2014-06-19 | 2017-12-20 | オムロン株式会社 | Push-button switch |
| CN207097766U (en) * | 2017-08-31 | 2018-03-13 | 淮南万泰电气有限公司 | A kind of emergency cut-off means of high voltage breaker |
| CN108766800A (en) * | 2018-06-20 | 2018-11-06 | 国网浙江省电力有限公司温州供电公司 | Remote control type switching off/on device for portable switchgear |
| CN210489459U (en) * | 2019-07-29 | 2020-05-08 | 国网浙江省电力有限公司温州供电公司 | Remote control emergency brake-separating device |
| CN111933484A (en) * | 2020-09-07 | 2020-11-13 | 国网浙江杭州市余杭区供电有限公司 | Switching-off mechanism of remote control circuit breaker |
| CN112599369B (en) * | 2020-12-03 | 2023-07-28 | 广东电网有限责任公司 | Emergency brake separating device of high-voltage circuit breaker |
| CN113223876B (en) * | 2021-04-14 | 2023-03-21 | 国网河北省电力有限公司保定供电分公司 | Switch control device |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN216311656U (en) * | 2021-10-22 | 2022-04-15 | 国网浙江省电力有限公司衢州供电公司 | External emergency brake separating device of switch cabinet |
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