CN108922835B - Emergency brake separating mechanism of circuit breaker - Google Patents
Emergency brake separating mechanism of circuit breaker Download PDFInfo
- Publication number
- CN108922835B CN108922835B CN201810663381.XA CN201810663381A CN108922835B CN 108922835 B CN108922835 B CN 108922835B CN 201810663381 A CN201810663381 A CN 201810663381A CN 108922835 B CN108922835 B CN 108922835B
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- plate
- pushing
- driving
- circuit breaker
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- 230000005540 biological transmission Effects 0.000 abstract description 5
- 238000007789 sealing Methods 0.000 description 32
- 238000000034 method Methods 0.000 description 9
- 238000009434 installation Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
- H01H3/022—Emergency operating parts, e.g. for stop-switch in dangerous conditions
Abstract
The invention relates to an emergency brake separating mechanism of a circuit breaker, which comprises a rear plate and a front plate, wherein the front plate is positioned at the front upper side of the rear plate and is inclined forwards and upwards, a pushing piece capable of moving towards and away from a brake separating buckle plate is slidably arranged on the rear plate, a driving structure which is matched with the pushing piece in a pushing way to enable the pushing piece to move towards the brake separating buckle plate and push the brake separating buckle plate to realize brake separating of the circuit breaker is rotatably arranged on the front plate, the driving structure is provided with a driving surface which is used for being driven by an emergency brake separating button on a switch cabinet to act, the driving structure is also provided with a pushing surface which is matched with the pushing piece in a pushing way, a set included angle is formed between the driving surface and the pushing surface to enable the driving structure to change direction, and the pushing piece is also provided with a reset spring which is used for applying acting force back to the pushing piece to move towards the brake separating buckle plate. The driving structure directly drives the push rod to act, so that the safety and the practicability are higher. The setting of the included angle can realize transmission reversing when the driving structure is stressed, so that the transmission working condition of the cabinet body is met.
Description
Technical Field
The invention relates to an emergency brake separating mechanism of a circuit breaker.
Background
The accident that the control power supply is powered down and the brake-separating electromagnet is damaged easily occurs in the operation process of the high-voltage circuit breaker, so that the high-voltage circuit breaker cannot perform normal brake-separating operation. The circuit breaker in the prior art, as shown in fig. 1, has front sealing plate 1 and back sealing plate 2, and the front side of front sealing plate 1 has panel 9, installs operating device between panel 9 and the back sealing plate 2, and operating device's breaking pinch plate slides along the face of back plate, and front sealing plate 1 is located the top of back sealing plate 2, and the two links together through diaphragm 10, has certain contained angle between the face of front sealing plate 1 and the face of back sealing plate 2 simultaneously. The prior emergency solution is to open the cabinet door of the switch cabinet, extend a hand into the cabinet to press the opening button of the high-voltage circuit breaker, and forcedly perform manual emergency opening operation on the high-voltage circuit breaker, but the high-voltage circuit breaker is too close to the high-voltage circuit breaker without good precautions, so personal injury is easily caused.
Disclosure of Invention
The invention aims to provide an emergency brake-separating mechanism of a circuit breaker, which aims to solve the problem of lower safety in the emergency brake-separating process of the circuit breaker in the prior art.
In order to achieve the purpose, the technical scheme of the emergency brake separating mechanism of the circuit breaker is as follows:
the emergency brake separating mechanism of the circuit breaker comprises a rear plate and a front plate which is positioned at the upper front side of the rear plate and inclines forwards and upwards, a pushing piece capable of moving towards and away from a brake separating buckle plate is slidably arranged on the rear plate, a driving structure which is in pushing fit with the pushing piece to enable the pushing piece to move towards the brake separating buckle plate and push the brake separating buckle plate to realize brake separating of the circuit breaker is rotatably arranged on the front plate, the driving structure is provided with a driving surface which is used for being driven by an emergency brake separating button on a switch cabinet to act, the driving structure is also provided with a pushing surface which is in pushing fit with the pushing piece, an included angle is formed between the driving surface and the pushing surface to enable the driving structure to change so as to push the pushing piece, and a reset spring which is used for applying acting force back to the pushing piece to move towards the brake separating buckle plate is also arranged on the pushing piece.
Further, in order to match the situation that the emergency brake separating button is perpendicular to the moving direction of the pushing rod, the pushing effect is guaranteed, force application and force transmission are facilitated, and the set included angle is 90 degrees.
Further, in order to simplify the structure, easy to assemble and make, the drive structure is the drive plate, the drive plate is whole to be L shape, including diaphragm section and indulge the board section, the drive face is formed by the back of diaphragm section indulge board section one side face, pushes away the face by indulge board section back of diaphragm section one side face formation, still be equipped with on the drive plate with diaphragm section and indulge board section's face all parallel in order to realize with front bezel's normal running fit's hinge hole.
Further, for the convenience of processing and manufacturing, the two side plate surfaces of the driving plate along the axis direction of the hinge hole are provided with hinge plates, and the hinge hole is arranged on the hinge plates.
Further, in order to facilitate the rotation assembly of the driving plate, the emergency brake separating mechanism of the circuit breaker further comprises a fixing piece fixed on the front plate, the driving plate is rotatably assembled on the fixing piece, and the fixing piece is provided with a connecting hole which extends coaxially with the hinge hole to realize the rotation assembly of the hinge hole and the hinge rod.
Further, in order to prevent to interfere with other spare parts, and holistic structural strength is higher moreover, the mounting is the L shaped plate, and the perpendicular section of L shaped plate has the mounting hole that is used for with the front bezel assembly, and the connecting hole sets up on the flat section of L shaped plate.
Further, in order to facilitate the rotation assembly of the driving plate, the vertical section plate surface of the L-shaped plate is flush with the plate surface of the front plate, and the flat section of the L-shaped plate is perpendicular to the plate surface of the rear plate so that the driving plate is in a plate surface vertical posture.
Further, for the convenience assembly ejector pin, the urgent brake mechanism of circuit breaker still includes the U-shaped frame that is used for fixing on the back plate, the ejector pin of transversely wearing to adorn on the both sides wall of U-shaped frame is pushed up to the ejector pin, still be equipped with on the ejector pin be used for with the spacing complex of U-shaped frame keep off the round pin, reset spring cover is established on the ejector pin and is located the position between the lateral wall of keep off pin and U-shaped frame.
Further, in order to realize pushing of the pushing rod and avoid interference of parts, a containing groove for the driving plate to pass through is formed in the lower portion of the front plate, and the longitudinal plate section of the driving plate is provided with a pushing portion extending downwards to the extending position of the moving path of the pushing piece.
The beneficial effects of the invention are as follows: compared with the prior art, the emergency brake separating mechanism of the circuit breaker is characterized in that the pushing piece is arranged on the rear plate and is driven by the driving structure, in the actual working process, an operator can operate the emergency brake separating button outside the cabinet body, the driving surface of the driving structure is pushed by the emergency brake separating button, the driving surface drives the pushing surface to act, the pushing piece is pushed to move so as to push the brake separating plate, the emergency brake separating operation is finally realized, the structure is simple, the operator does not need to open the cabinet door, the pushing rod can be directly driven by the driving structure to act, and the safety and the practicability are high. Further, the setting of the included angle between the driving surface and the pushing surface can enable the driving structure to realize transmission reversing when being stressed, so that the working condition that the movement of the opening pinch plate in the cabinet body and the movement of the emergency opening button are not in the same direction can be met.
Drawings
Fig. 1 is a schematic diagram of a circuit breaker in the prior art;
fig. 2 is a schematic diagram showing an assembly structure of an embodiment of an emergency brake release mechanism of a circuit breaker in the circuit breaker according to the present invention;
fig. 3 is a schematic structural view of the emergency brake release mechanism of the circuit breaker of fig. 2;
FIG. 4 is a schematic view of the assembled structure of the ejector pin, return spring and U-shaped frame of FIG. 3;
FIG. 5 is a schematic view of the U-shaped frame of FIG. 4;
FIG. 6 is a schematic diagram of the driving plate in FIG. 3;
fig. 7 is a schematic view of the structure of the L-shaped plate in fig. 3.
Reference numerals illustrate: 1-a front sealing plate; 2-a rear sealing plate; 3-separating brake buckle plate; 4-pushing the rod; 5-a return spring; 6-U-shaped frames; 7-a drive plate; an 8-L-shaped plate; 41-stop pin; 61-perforating; 62-fixing holes; 71-a transverse plate section; 72-longitudinal plate sections; 73—a driving surface; 74-pushing surface; 75-hinge plates; 76-hinge holes; 81-vertical section; 82-flat sections; 83-connecting holes; 84-mounting holes; 9 panels; 10-a transverse plate; 11-emergency brake release mechanism.
Detailed Description
Embodiments of the present invention will be further described with reference to the accompanying drawings.
As shown in fig. 2 to 7, the emergency brake release mechanism 11 of the present invention is applied to an operating mechanism between a front panel 9 and a rear sealing plate 2 of a circuit breaker in an emergency brake release process of the circuit breaker, and mainly acts on a brake release buckle plate 3 of the operating mechanism to directly drive the brake release buckle plate 3 to act under emergency conditions to realize brake release of the circuit breaker. The brake separating buckle plate 3 moves between the panel and the rear sealing plate 2 along the left-right direction, wherein the brake separating buckle plate 3 can drive the operating mechanism to separate brake when moving rightwards. The front sealing plate 1 of the circuit breaker is arranged above the panel, the front sealing plate 1 is connected with the rear sealing plate 2 through a transverse plate 10, the rear sealing plate 2 is arranged in a vertical extending mode, and the upper side of the front sealing plate 1 extends forwards.
In this embodiment, the emergency brake release mechanism includes a pushing member, a return spring 5, a driving structure, a fixing member, a U-shaped frame 6, etc., wherein a fixing hole 62 is provided on a bottom wall of the U-shaped frame 6, the U-shaped frame 6 is fixed on the rear sealing plate 2 through bolting, and two arms of the U-shaped frame are coaxially provided with through holes 61, and the two through holes 61 are located at an extending position of a moving path of the brake release buckle 3.
The pushing member is a pushing rod 4, in the actual use process, the pushing rod 4 is inserted into the through hole 61, and can reciprocate in the through hole 61 towards the opening pinch plate 3 and away from the opening pinch plate 3 along the left-right direction, and can be pushed against the opening pinch plate 3 in the moving process towards the opening pinch plate 3 so as to open the operation mechanism. Meanwhile, a stop pin 41 is arranged on the rod body of the push rod 4 between the two arms of the U-shaped frame 6, and the length of the stop pin 41 is larger than the diameter of the through hole 61, so that the push rod 4 can be prevented from being pulled out of the through hole 61. Meanwhile, a return spring 5 is arranged between one of the blocking pins 41 and the side arm of the U-shaped frame 6 in a pressing mode, and the return spring 5 is a pressure spring in the embodiment and is used for applying a force to the push rod 4 for moving leftwards back to the brake separating buckle plate 3, so that the push rod 4 can be kept separated from the brake separating buckle plate 3 when no external force is pushed.
The pushing rod 4 is pushed by the driving structure to move towards the brake separating buckle plate 3. For the driving structure, in this embodiment, the driving structure is hinged to the front sealing plate 1, and meanwhile, the driving structure has a pushing surface 74 for being in pushing fit with the pushing rod 4, and a driving surface 73 for being driven by an emergency brake release button on the switch cabinet to move towards the brake release buckle plate 3 and push the brake release buckle plate 3 to realize brake release of the circuit breaker. For the switch cabinet, since the brake release buckle 3 moves in the left-right direction and the emergency brake release button moves in the front-back direction, in this embodiment, in order to achieve the movement of the brake release buckle 3 driven by the action of the emergency brake release button, an included angle is set between the driving surface 73 and the pushing surface 74 to achieve the reversing of the driving structure, so as to achieve the pushing of the pushing piece. Of course, in order to better ensure the pushing effect and more facilitate force application and force transmission, the included angle is set to be 90 degrees. In this embodiment, for simplifying the structure, the driving structure is the driving plate 7, the driving plate 7 is integrally L-shaped, and includes a transverse plate section 71 and a longitudinal plate section 72, wherein the driving surface 73 is formed by a side surface of the transverse plate section 71 facing away from the longitudinal plate section 72, and the pushing surface 74 is formed by a side surface of the longitudinal plate section 72 facing away from the transverse plate section 71. And the driving plate 7 is also provided with a hinge hole 76 which is parallel to the plate surfaces of the transverse plate section 71 and the longitudinal plate section 72 so as to realize the rotation assembly with the front sealing plate 1. The arrangement can realize that in the actual operation process, an external emergency brake release button is pressed, the emergency brake release button pushes the driving surface 73 to turn backwards, the pushing surface 74 is further driven to turn right, the pushing surface 74 is matched with the pushing rod 4 in the turning process, and the brake release buckle plate 3 is driven to act to realize brake release of the circuit breaker. The hinge plates 75 are arranged on the two side plate surfaces of the driving plate 7 along the axis direction of the hinge holes 76, the hinge holes 76 are arranged on the hinge plates 75, so that the hinge plates can be conveniently manufactured, and in the actual installation process, the hinge rods directly penetrate through the hinge holes 76, so that the hinge holes 76 do not need to be arranged on the driving plate 7.
Meanwhile, in this embodiment, in order to facilitate the rotation assembly of the driving plate 7, a fixing member is further provided on the front sealing plate 1, and the fixing member has a connection hole 83 extending coaxially with the hinge hole 76 to enable the hinge hole 76 to be assembled together by rotation of the hinge rod. The drive plate 7 is rotatably assembled relative to the fixing member by the hinge rod penetrating the connecting hole 83 and the hinge hole 76. In this embodiment, in order to facilitate the installation of the driving plate 7 and to make the structure of the fixing member meet the installation requirement in the circuit breaker, the fixing member is an L-shaped plate 8, the vertical section 81 of the L-shaped plate 8 has an installation hole 84 fixedly assembled with the rear plate surface of the front sealing plate 1, and the connection hole 83 is disposed on the flat section 82 of the L-shaped plate 8. This facilitates the installation of the drive plate 7. Meanwhile, the flat section 82 of the L-shaped plate 8 extends forwards to form a front plate surface of the front sealing plate 1, and the corresponding connecting hole 83 is also positioned in front of the front sealing plate 1, so that a certain distance is reserved between a cabinet door of the switch cabinet and the front sealing plate 1, and in order to ensure that the emergency brake release button can be stably and well contacted with driving, the driving plate 7 is arranged to protrude out of the front sealing plate 1, and the distance between the emergency brake release button and the driving plate 7 is shortened.
In the case of the L-shaped plate 8, since the front sealing plate 1 is a sloping plate with the upper side sloping forward, in order to enable the driving plate 7 to rotate about the vertical axis, in this embodiment, the extending direction of the vertical section 81 of the L-shaped plate 8 coincides with the sloping direction of the front sealing plate 1, and the extending direction of the flat section 82 of the L-shaped plate 8 is perpendicular to the plate surface of the rear sealing plate 2.
Meanwhile, in order to avoid the parts positioned on the front side of the panel in the switch cabinet, in the embodiment, the lower part of the front sealing plate 1 is provided with a containing groove with a downward opening, the flat section 82 of the fixing plate is positioned at the bottom of the upper side groove of the containing groove, and meanwhile, the driving plate 7 is positioned in the containing groove, so that the driving plate 7 can be moved upwards integrally, interference with other parts is prevented, and an interval is reserved between the groove wall of the containing groove and the pushing surface 74 of the driving structure, so that the driving plate 7 can be turned over conveniently. In the present embodiment, since the driving plate 7 is located above the ejector pin 4, in order to achieve the push fit between the driving plate 7 and the ejector pin 4, the longitudinal plate section 72 of the driving plate 7 has a push portion that protrudes downward to be interposed in the extending path of the movement of the ejector pin 4. Meanwhile, in order to realize the overturning of the longitudinal plate section 72, an avoidance groove for the pushing part to pass through and overturn along the left-right direction is also arranged on the transverse plate.
In the actual working process, if an emergency situation needs to be broken, the emergency breaking button is operated to push the transverse plate section 71 of the driving plate 7, the transverse plate section 71 can drive the longitudinal plate section 72 to turn right by turning backwards around the hinging rod, and then the push rod 4 can be pushed to overcome the acting force of the reset spring 5 to move right, so that the breaking pinch plate 3 is pushed to break the breaker. The device directly acts on the breaking pinch plate 3, is not easy to fail, has high stability, simple structure and convenient use.
In other embodiments, the pushing member may be a rod structure or a block structure; the return spring can be a compression spring or a tension spring.
In other embodiments, when expanding to other switch cabinets, the size of the set included angle can be adjusted arbitrarily according to the included angle between the actual emergency brake-separating button and the moving direction of the push rod.
In other embodiments, the driving member may be in the form of a driving block, and only the driving surface and the pushing surface need to be guaranteed; the hinge holes may be directly provided on the transverse or longitudinal plate sections of the driving plate; the hinge rod can be directly welded on the front sealing plate without designing a fixing piece.
In other embodiments, the guiding groove may be directly formed on the rear sealing plate, and the pushing member may be provided with a guiding piece assembled with the guiding groove in a guiding manner, so as to realize guiding movement. At this time, the return spring may be disposed between the pushing member and the front seal plate.
Claims (5)
1. The utility model provides an urgent brake mechanism of separating from of circuit breaker, includes the back plate and is located the preceding upside of back plate and the front bezel of slope forward upper side, its characterized in that: the rear plate is provided with a pushing piece capable of moving towards and away from the opening pinch plate in a sliding manner, the front plate is rotatably provided with a driving structure which is matched with the pushing piece in a pushing manner so as to enable the pushing piece to move towards the opening pinch plate and push the opening pinch plate to realize opening of the circuit breaker, the driving structure is provided with a driving surface which is used for being driven by an emergency opening button on the switch cabinet to act, the driving structure is also provided with a pushing surface which is matched with the pushing piece in a pushing manner, an included angle is arranged between the driving surface and the pushing surface so as to enable the driving structure to change the direction to realize pushing of the pushing piece, and the pushing piece is also provided with a reset spring which is used for applying an acting force for applying back movement of the opening pinch plate to the pushing piece; the driving structure is a driving plate, the driving plate is integrally L-shaped and comprises a transverse plate section and a longitudinal plate section, the driving surface is formed by a plate surface of the transverse plate section on one side of the longitudinal plate section, which is opposite to the transverse plate section, the pushing surface is formed by a plate surface of the longitudinal plate section on one side of the transverse plate section, and the driving plate is also provided with a hinge hole which is parallel to the plate surfaces of the transverse plate section and the longitudinal plate section so as to realize the running fit with the front plate; the emergency brake separating mechanism of the circuit breaker further comprises a fixing piece which is used for being fixed on the front plate, the driving plate is rotationally assembled on the fixing piece, and the fixing piece is provided with a connecting hole which extends coaxially with the hinge hole so as to be rotationally assembled with the hinge hole through a hinge rod; the fixing piece is an L-shaped plate, the vertical section of the L-shaped plate is provided with a mounting hole for being assembled with the front plate, and the connecting hole is arranged on the flat section of the L-shaped plate;
the included angle between two folds of the L-shaped plate is as follows: the vertical section face of L shaped plate flushes with the face of front bezel, and the flat section of L shaped plate is perpendicular with the face of back plate in order to make the drive plate be the vertical gesture setting of face.
2. The circuit breaker emergency release mechanism of claim 1, wherein: the set included angle is 90 degrees.
3. The circuit breaker emergency release mechanism of claim 1 or 2, wherein: and the two side plate surfaces of the driving plate along the axis direction of the hinge hole are provided with hinge plates, and the hinge hole is arranged on the hinge plates.
4. The circuit breaker emergency release mechanism of claim 1 or 2, wherein: the emergency brake separating mechanism of the circuit breaker further comprises a U-shaped frame which is fixed on the rear plate, the pushing piece is a pushing rod which transversely penetrates through two side walls of the U-shaped frame, a stop pin which is used for being in limit fit with the U-shaped frame is further arranged on the pushing rod, and the reset spring is sleeved on the pushing rod and located at a position between the stop pin and the side walls of the U-shaped frame.
5. The circuit breaker emergency release mechanism of claim 1 or 2, wherein: the lower part of the front plate is provided with a containing groove for the driving plate to pass through, and the longitudinal plate section of the driving plate is provided with a pushing part which extends downwards to the extending position of the moving path of the pushing part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810663381.XA CN108922835B (en) | 2018-06-25 | 2018-06-25 | Emergency brake separating mechanism of circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810663381.XA CN108922835B (en) | 2018-06-25 | 2018-06-25 | Emergency brake separating mechanism of circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108922835A CN108922835A (en) | 2018-11-30 |
| CN108922835B true CN108922835B (en) | 2024-01-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810663381.XA Active CN108922835B (en) | 2018-06-25 | 2018-06-25 | Emergency brake separating mechanism of circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108922835B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204067179U (en) * | 2014-09-01 | 2014-12-31 | 中国西电集团公司 | A kind of vacuum circuit-breaker mechanical interlocks |
| CN204179548U (en) * | 2014-10-30 | 2015-02-25 | 成都科星电力电器有限公司 | A kind of emergent brake separating device of handcart-type breaker |
| CN104934246A (en) * | 2015-06-30 | 2015-09-23 | 国家电网公司 | Emergency switch-off module of breaker |
| CN204792528U (en) * | 2015-06-30 | 2015-11-18 | 国家电网公司 | Urgent separating brake subassembly of circuit breaker |
| CN207116243U (en) * | 2017-07-05 | 2018-03-16 | 西电三菱电机开关设备有限公司 | A kind of emergency brake-dividing device |
| CN208622661U (en) * | 2018-06-25 | 2019-03-19 | 河南森源电气股份有限公司 | A kind of emergency brake-disconnecting mechanism for breaker |
-
2018
- 2018-06-25 CN CN201810663381.XA patent/CN108922835B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204067179U (en) * | 2014-09-01 | 2014-12-31 | 中国西电集团公司 | A kind of vacuum circuit-breaker mechanical interlocks |
| CN204179548U (en) * | 2014-10-30 | 2015-02-25 | 成都科星电力电器有限公司 | A kind of emergent brake separating device of handcart-type breaker |
| CN104934246A (en) * | 2015-06-30 | 2015-09-23 | 国家电网公司 | Emergency switch-off module of breaker |
| CN204792528U (en) * | 2015-06-30 | 2015-11-18 | 国家电网公司 | Urgent separating brake subassembly of circuit breaker |
| CN207116243U (en) * | 2017-07-05 | 2018-03-16 | 西电三菱电机开关设备有限公司 | A kind of emergency brake-dividing device |
| CN208622661U (en) * | 2018-06-25 | 2019-03-19 | 河南森源电气股份有限公司 | A kind of emergency brake-disconnecting mechanism for breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108922835A (en) | 2018-11-30 |
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