CN109427493B - Forced opening mechanism and switch cabinet - Google Patents
Forced opening mechanism and switch cabinet Download PDFInfo
- Publication number
- CN109427493B CN109427493B CN201710777416.8A CN201710777416A CN109427493B CN 109427493 B CN109427493 B CN 109427493B CN 201710777416 A CN201710777416 A CN 201710777416A CN 109427493 B CN109427493 B CN 109427493B
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- China
- Prior art keywords
- switch
- forced
- frame
- power transfer
- opening mechanism
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
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- 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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
Abstract
A forced opening mechanism for a switchgear cabinet, the switchgear cabinet comprising a frame and a switch mounted to the frame, the switch being swingable in and out of the frame via a swing-in and swing-out mechanism on a drawer mounted on the frame, characterized in that the forced opening mechanism is fixedly mounted on the drawer and is capable of forcing the switch to open forcibly in at least one of an isolated position and a connected position during swinging in and out of the frame in response to the action of the swing-in and swing-out mechanism, a closing operation being enabled in a test position for testing.
Description
Technical Field
The invention relates to a forced opening mechanism for a switch cabinet and the switch cabinet.
Background
The bypass transfer switch comprises a bypass dual-power transfer switch (MTSE), a standard dual-power transfer switch (ATSE) and a frame, wherein the bypass dual-power transfer switch and the standard dual-power transfer switch are arranged in the vertical direction, and the bypass dual-power transfer switch is used for playing a role when the standard dual-power transfer switch breaks down. The bypass dual power transfer switch is fixedly mounted to the frame, while the standard dual power transfer switch is mounted to the frame via a swing-in and swing-out mechanism on a drawer that is mounted to the frame.
In order to guarantee the safety of operators, when the standard dual-power transfer switch is swung into the frame, the standard dual-power transfer switch is required to be always in the open state, namely, the standard dual-power transfer switch is not connected with any one of a common power supply and a standby power supply. In addition, the standard dual power transfer switch is also required to be in the open state when pulled out from the frame, i.e., not connected to either the normal power supply or the backup power supply.
In the prior art, a signal indicating whether the standard dual-power transfer switch is switched on is generally detected by an electronic mechanism, and if the standard dual-power transfer switch is switched on, the electromagnet is controlled to release the driving mechanism, so that the standard dual-power transfer switch is shaken in and out. This approach has the following disadvantages: the electronic mechanism is used for detecting the closing signal, so that the closing signal is too complex, and if the common power supply and the standby power supply both have faults or the signal control faults, the closing is not allowed, and emergency unlocking is needed at the moment; the safety problems of electromagnetic control failure and live operation exist; the bypass product is not beneficial to modular design, the bypass product cannot be expanded into an ATSE product with a drawing frame, and the independent ATSE product with the drawing frame still needs to have no electric plugging function.
Thus, there is a need to provide a more reliable forced opening mechanism to open a standard dual-power transfer switch during a rock-out and rock-in period.
Disclosure of Invention
The invention provides a forced opening mechanism for a switch cabinet, which comprises a frame and a dual-power transfer switch mounted on the frame, wherein the dual-power transfer switch can swing in and out the frame through a swing-in and swing-out mechanism on a drawing frame, and the drawing frame is mounted on the frame.
Preferably, the forced opening mechanism includes: a support plate fixedly mounted on the frame; a link mechanism pivotably mounted on the support plate, capable of rotating in response to an action of a rock-in and rock-out mechanism when a dual power transfer switch is rocked into a connection position, the link mechanism having a drive pin; the double-separating piece is in a fan-shaped shape and provided with a groove, the driving pin is accommodated in the groove, during the movement of the connecting rod mechanism, the driving pin can move in the groove and finally abuts against the wall of the groove, so that the double-separating piece overcomes the resistance of the spring and rotates, the fan-shaped part is used for pushing and pressing the shunt rod arranged on the double-power-supply change-over switch, the double-power-supply change-over switch is forced to be switched off, and the two ends of the spring are respectively fixed to the supporting plate and the double-separating piece.
Preferably, the link mechanism comprises a first link, a connecting column and a second link, the first link is fixedly connected with the second link through the connecting column, and the driving pin is located at the free end of the second link.
Preferably, the forced opening mechanism further comprises: the pre-brake dividing element is arranged on the supporting plate and is provided with one side with a prefabricated outline so as to guide the motion of the shunt pole during the shaking-in and shaking-out period of the dual-power transfer switch, ensure that the dual-power transfer switch is forcibly opened at an isolation position and can be closed at a test position for testing; the support sheet is arranged on the support plate; and the stop pin is arranged on the supporting sheet and used for limiting the movement of the double-separating sheet, and two ends of the spring are respectively fixed to the supporting sheet and the double-separating sheet.
Preferably, the pre-opening element has a first profile for an isolation position in which the opening lever is pressed by the first profile to forcibly open the dual power transfer switch, and a second profile for a test position in which the second profile allows the opening lever to return to an initial position to allow the dual power transfer switch to be closed for a test.
Preferably, the bypass transfer switch further comprises a main shaft rotatably mounted on the frame and a main shaft cam mounted on the main shaft, and the main shaft cam has a groove in which the drive roller can be received and translate along the contour of the groove during rotation of the main shaft cam to move the dual power transfer switch.
Preferably, in the isolation position of the dual-power transfer switch, the dual-power transfer switch is forcibly opened through a first profile of the pre-opening element, when the dual-power transfer switch is swung into the frame, the spindle is firstly rotated in a first direction, which drives the spindle cam to rotate in the first direction, so that the driving roller drives the dual-power transfer switch to move, when the dual-power transfer switch reaches the test position, the dual-power transfer switch is allowed to be closed through a second profile of the pre-opening element, the spindle cam abuts against the first connecting rod along with further rotation of the spindle cam, so that the first connecting rod pivots in a second direction opposite to the first direction, which drives the second connecting rod to rotate in the second direction around an axis where the connecting rod is located, so that the driving pin moves in a groove in the dual-segment, and finally the dual-segment is pressed downwards against the tensile force of the spring, the fan-shaped profile of the double-segment is abutted to the shunt rod, the double-power-supply change-over switch is forced to be switched off at the connection position, then the main shaft cam is separated from the contact with the first connecting rod, the double-segment returns to the initial state under the action of the spring restoring force, and the shunt rod returns to the initial position.
Preferably, when the dual power transfer switch is swung out from the frame, the main shaft is firstly rotated along the second direction, the main shaft cam is driven to rotate along the second direction, the main shaft cam is abutted with the first connecting rod, the first connecting rod pivots along the second direction along with the further rotation of the main shaft cam along the second direction, the second connecting rod is driven to rotate along the second direction around the axis of the connecting column, so that the driving pin moves in the groove in the double-layer slice, the double-layer slice is finally pressed downwards by overcoming the pulling force of the spring, the fan-shaped outline of the double-layer slice is abutted with the shunt rod, the dual power transfer switch is forcibly shunted at the connecting position, and then when the dual power transfer switch is swung out to the testing position, the shunt rod returns to the initial position through the second outline of the pre-shunt element, the dual power transfer switch is allowed to be switched on for testing, and then the dual power transfer switch is swung out to the isolating position, the shunt rod is pressed by the first contour of the pre-brake component, so that the dual-power transfer switch is forcibly opened.
Preferably, the forced opening mechanism is respectively installed for the common power supply and the standby power supply.
Preferably, the switch cabinet is a bypass transfer switch cabinet, and comprises a bypass dual-power transfer switch, a standard dual-power transfer switch and a frame, and the forced opening mechanism is used for the standard dual-power transfer switch.
According to another aspect of the invention, a switch cabinet with the forced opening mechanism is provided.
Preferably, the switch cabinet is a bypass transfer switch cabinet, and comprises a bypass dual-power transfer switch, a standard dual-power transfer switch and a frame, and the forced opening mechanism is used for the standard dual-power transfer switch.
Drawings
Advantages and objects of the present invention will be better understood from the following detailed description of preferred embodiments of the invention, taken in conjunction with the accompanying drawings. The drawings are not necessarily to scale, emphasis instead being placed upon illustrating the relationship of the various components. In the drawings:
FIG. 1 shows a perspective view of the forced opening mechanism of the present invention;
fig. 2 shows a perspective view of the forced opening mechanism of the present invention, viewed from another direction;
FIG. 3 shows the forced opening mechanism after the support plate has been removed;
FIG. 4 is a schematic view showing an installation state of the forced opening mechanism of the present invention;
fig. 5-10 show schematic diagrams of a process of rocking a standard dual power transfer switch into a frame.
Detailed Description
Various embodiments according to the present invention will be described in detail with reference to the accompanying drawings. Here, it is to be noted that, in the drawings, the same reference numerals are given to constituent parts having substantially the same or similar structures and functions, and repeated description thereof will be omitted. The terms "first direction", "second direction", "rotational direction", and the like herein are described with respect to the drawings of the present invention, unless otherwise specified. The term "sequentially comprising A, B, C, etc" merely indicates the order of the included elements A, B, C, etc. and does not exclude the possibility of including other elements between a and B and/or between B and C. The "up" and "down" directions are described with respect to the drawings of the present invention.
The drawings in the present specification are schematic views to assist in explaining the concept of the present invention, and schematically show the shapes of respective portions and their mutual relationships.
Hereinafter, a preferred embodiment according to the present invention will be described in detail with reference to fig. 1 to 9.
Referring first to fig. 1-3, there are shown perspective views of a forced opening mechanism according to the present invention, which is mounted to a drawer frame. As can be seen from the figure, the forced opening mechanism comprises a support plate 1, which is mounted on the drawer frame. Mounted to the support plate 1 is a pre-breaking element 2, the bottom side of which has a pre-profile comprising a first profile and a second profile for the shunt bar 15 of a standard dual power transfer switch to travel along.
Specifically, in the isolation position of the standard dual power transfer switch, the shunt rod 15 is pressed by the first contour, so that the standard dual power transfer switch is forcibly opened, and in the test position of the standard dual power transfer switch, the second contour allows the shunt rod 15 to return to the initial position, so that the standard dual power transfer switch is allowed to be closed for testing. In this embodiment the first profile is substantially trapezoidal, pressing the shunt lever through the plane of the top of the trapezoid, and the second profile is substantially triangular, allowing the shunt lever to return to the initial position through the apex of the triangle, but it will be appreciated that other profiles are suitable as long as the objects of the invention are met.
The shunt pole 15 is mounted to a standard dual power transfer switch, the function and construction of which is common in the art and therefore will not be described in detail herein.
The first link 5 is pivotably mounted to the support plate 1 and is connected to the second link 3 via a connection post 4, the connection post 4 also being pivotably mounted to the support plate 1. The other end of the second connecting rod 3 has a driving pin 113 which can be accommodated in and move within a groove of the double-divided piece 12. A support plate 6 is mounted to the support plate 1 by a double-segmented support post 9. The upper hanger spring pin 7 is mounted to the support plate 6, the lower hanger spring pin 10 is mounted to the double segment 12, and the spring 11 is connected between the two hanger spring pins. Although the spring pin is used to mount the spring in this embodiment, it should be understood that other means may be used to mount the spring as long as the spring can function to pull the double-piece. Stop pin 8 is mounted to support plate 6 for limiting the position of double segment 12.
Next, referring to fig. 4, an installation state of the forced opening mechanism of the present invention is shown. As can be seen from fig. 4, the bypass switching switch of the present invention further includes a main shaft 17 and a main shaft cam 14, the main shaft 17 being rotatably mounted to the frame, and the main shaft cam 14 being mounted to both ends of the main shaft 17 to be rotatable together with the main shaft. The main shaft cam 14 has a groove 141, and can accommodate the driving roller 16 of the standard dual power transfer switch, so that the driving roller 16 can translate along the contour of the groove 141, thereby driving the standard dual power transfer switch to move.
The process of rocking a standard dual power transfer switch into the frame is described in detail below with reference to fig. 5-10.
First, as shown in fig. 5, when the standard dual-power transfer switch is in the isolation position S1, the shunt bar 15 is pressed by the first contour of the pre-tripping element, so that the standard dual-power transfer switch is forcibly tripped. Then, with the further shake-in of the standard dual-power transfer switch, the main shaft cam 14 rotates clockwise, the driving roller 16 drives the standard dual-power transfer switch to reach the testing position S2, at this time, the shunt rod 15 can return to its initial position through the second profile of the pre-opening element, so that the standard dual-power transfer switch can be switched on for the related test.
Then, as shown in fig. 6, as the spindle cam 14 rotates further, the spindle cam 14 contacts the first link 5, thereby pushing the first link 5 to rotate in the counterclockwise direction, and the rotation of the first link 5 causes the second link 3 to rotate in the counterclockwise direction about the axis of the connecting column 4, thereby moving the driving pin 113 in the groove in the double-divided piece 12 and pushing the double-divided piece downward against the pulling force of the spring 11 so that the sector of the double-divided piece 12 abuts against the shunt rod 15. In this example, the double segment 12 has a fan shape, and the fan-shaped portion abuts the shunt lever, which has the advantage that since the radius of the fan shape is determined, the pressing of the shunt lever is constant and there is no case where the shunt lever is pressed out of place or crushed. As shown in fig. 8, at this time, the forced opening mechanism opens the standard dual power transfer switch, and the standard dual power transfer switch reaches the connection position S3.
Subsequently, the spindle cam 14 further rotates out of contact with the first link 5, as shown in fig. 10. When the first connecting rod 5 loses the support with the main shaft cam, the double-layered piece 12 rebounds upwards under the restoring force of the spring 11 and returns to the initial position.
In addition, when the standard dual power transfer switch needs to be pulled out from the frame, the operation opposite to the above operation can be performed to realize. Specifically, the spindle cam 14 is rotated in the counterclockwise direction, and the driving roller 16 drives the standard dual power transfer switch to move leftward. With the further rotation of the spindle cam 14, the spindle cam 14 contacts with the first connecting rod 5, so as to push the first connecting rod 5 to rotate in the counterclockwise direction, the rotation of the first connecting rod 5 causes the second connecting rod 3 to rotate in the counterclockwise direction around the axis of the connecting column 4, so that the driving pin 113 moves in the groove in the double-segment 12, and pushes and presses the double-segment downwards against the pulling force of the spring 11, so that the fan-shaped part of the double-segment 12 abuts against the shunt rod 15, and the forced tripping of the standard dual-power transfer switch is realized.
And then, when the dual-power transfer switch is swung to a test position, the shunt rod returns to the initial position through the second contour of the pre-separating brake element to allow the dual-power transfer switch to be switched on for testing, then, the dual-power transfer switch is swung to an isolation position, and the shunt rod is pressed by the first contour of the pre-separating brake element to force the dual-power transfer switch to be switched off.
The forced opening mechanism of the present invention is described above. Therefore, the forced opening mechanism has the following advantages:
the transmission of motion is realized by utilizing a main shaft cam and a linked driving mechanism, and an independent motion source is not needed; the fan-shaped double-segment ensures that the shunt excitation rod cannot be over-pressed or cannot be pressed in place when being pushed, and ensures the reliability of the brake-separating function; the fan-shaped pieces are concentric circular arcs and are matched with the specially designed slotted driving pins, so that the phenomenon of jamming or incapability of driving is avoided; the position and the tension direction of the spring ensure that the stress directions of the fan-shaped sheet and the second connecting rod are always upward, and the stress of the first connecting rod is downward; the mounting structure is reliable, the mounting precision is easy to control, and only the dimensional precision and the assembly precision of a local small range need to be ensured; so that the bypass product is easily expanded to a single dual-power ATSE (automatic transfer switching) rack product.
The operation of the forced opening mechanism is described above by taking the forced opening mechanism applied to the dual power transfer switch as an example, but it should be understood by those skilled in the art that the forced opening mechanism can also be applied to other switches as long as the switch needs to be swung in and out and has a switching-on and switching-off function.
Moreover, the technical features disclosed above are not limited to the combinations with other features disclosed, and other combinations between the technical features can be performed by those skilled in the art according to the purpose of the invention, so as to achieve the purpose of the invention.
Claims (11)
1. A forced opening mechanism for a switchgear cabinet, the switchgear cabinet comprising a frame and a switch mounted to the frame, the switch being swingable in and out of the frame via a swing-in and swing-out mechanism on a drawer mounted on the frame, characterized in that the forced opening mechanism is fixedly mounted on the drawer and is capable of forcing opening of the switch in at least one of an isolated position and a connected position during swinging in and out of the frame in response to an action of the swing-in and swing-out mechanism, a closing operation being enabled in a test position for testing,
the forced opening mechanism comprises:
a support plate fixedly mounted on the frame;
a link mechanism pivotably mounted on the support plate and rotatable in response to an action of a rock-in and rock-out mechanism when the switch is rocked into a connecting position, the link mechanism having a drive pin;
the double-piece has a fan-shaped shape and is provided with a groove, the driving pin is accommodated in the groove, during the movement of the connecting rod mechanism, the driving pin can move in the groove and finally abuts against the wall of the groove, so that the double-piece overcomes the resistance of the spring to rotate, the fan-shaped part is further used for pushing the shunt rod arranged on the switch, the switch is forced to be switched off, and the two ends of the spring are respectively fixed to the supporting plate and the double-piece.
2. The forced opening mechanism according to claim 1, wherein the linkage mechanism comprises a first connecting rod, a connecting column and a second connecting rod, the first connecting rod is fixedly connected with the second connecting rod through the connecting column, and the driving pin is positioned at the free end of the second connecting rod.
3. The forced opening mechanism of claim 2, further comprising:
the pre-brake dividing element is arranged on the supporting plate and is provided with one side with a prefabricated profile so as to guide the motion of the shunt rod during the shaking-in and shaking-out of the switch, ensure that the switch is forcibly opened at an isolation position and can be closed at a test position for testing;
the support sheet is arranged on the support plate;
a stop pin arranged on the supporting sheet and used for limiting the movement of the double-sheet,
both ends of the spring are respectively fixed to the support sheet and the bipartite sheet.
4. The forced opening mechanism of claim 3, wherein the pre-opening element has a first profile for an isolating position in which the opening lever is pressed by the first profile to force the switch open and a second profile for a testing position in which the second profile allows the opening lever to return to an initial position allowing the switch to close for testing.
5. The forced opening mechanism according to claim 4, wherein the switch cabinet further comprises a main shaft and a main shaft cam, and the switch has a driving roller, the main shaft is rotatably mounted on the frame, the main shaft cam is mounted on the main shaft, and the main shaft cam has a groove, the driving roller can be received in the groove and translate along the contour of the groove during rotation of the main shaft cam, thereby moving the switch.
6. The forced opening mechanism of claim 5, wherein in the open position of the switch, the switch is forced to open by the first profile of the pre-breaking element, when the switch is swung into the frame, the spindle is first rotated in a first direction, which drives the spindle cam to rotate in the first direction, so that the drive roller drives the switch to move, when the switch reaches the test position, the switch is allowed to close by the second profile of the pre-breaking element, the spindle cam abuts against the first link with further rotation of the spindle cam, so that the first link pivots in a second direction opposite to the first direction, which drives the second link to rotate in the second direction around the axis of the connecting post, so that the drive pin moves in the groove in the double segment, and finally the double segment is pressed downward against the tensile force of the spring, so that the fan-shaped profile of the double segment abuts against the opening lever, the switch is forced to be opened at the connection position, then the main shaft cam is separated from the contact with the first connecting rod, the double-piece is caused to return to the initial state under the action of the restoring force of the spring, and the shunt rod returns to the initial position.
7. The forced opening mechanism of claim 5, wherein when the switch is swung out of the frame, the spindle is first rotated in the second direction, which rotates the spindle cam in the second direction, which brings the spindle cam into abutment with the first link, and as the spindle cam is further rotated in the second direction, the first link pivots in the second direction, which brings the second link to rotate in the second direction about the axis of the connecting post, which moves the driving pin in the groove in the double segment, which finally presses the double segment downward against the pulling force of the spring, which brings the fan-shaped profile of the double segment into abutment with the opening lever, which forces the switch to open in the connecting position, and thereafter, when the switch is swung out to the testing position, the opening lever returns to the initial position through the second profile of the pre-dividing element, which allows the switch to close for testing, and then the switch is swung out to the isolating position, the opening rod is pressed by the first contour of the pre-brake element, so that the switch is forced to open the brake.
8. A forced tripping mechanism as claimed in any one of the preceding claims, characterised in that the switch is a dual power transfer switch, and the forced tripping mechanism is installed separately for the main and backup power supply.
9. The forced opening mechanism according to any one of claims 1 to 7, wherein the switch cabinet is a bypass transfer switch cabinet comprising a bypass dual power transfer switch, a standard dual power transfer switch and a frame, and the forced opening mechanism is used for the standard dual power transfer switch.
10. A switchgear cabinet having a forced opening mechanism as claimed in any one of the preceding claims.
11. The switchgear cabinet of claim 10 wherein the switchgear cabinet is a bypass transfer switchgear cabinet comprising a bypass dual power transfer switch, a standard dual power transfer switch and a frame, the forced opening mechanism for the standard dual power transfer switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710777416.8A CN109427493B (en) | 2017-08-31 | 2017-08-31 | Forced opening mechanism and switch cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710777416.8A CN109427493B (en) | 2017-08-31 | 2017-08-31 | Forced opening mechanism and switch cabinet |
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| Publication Number | Publication Date |
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| CN109427493A CN109427493A (en) | 2019-03-05 |
| CN109427493B true CN109427493B (en) | 2020-02-14 |
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|---|---|---|---|
| CN201710777416.8A Active CN109427493B (en) | 2017-08-31 | 2017-08-31 | Forced opening mechanism and switch cabinet |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5837949A (en) * | 1996-06-28 | 1998-11-17 | Siemens Energy & Automation, Inc. | Circuit breaker draw apparatus and system with a slider flange attached to the active draw bracket |
| CN1577685A (en) * | 2003-07-29 | 2005-02-09 | 浙江华一电器厂 | Withdrawing device with mechanical interlock for Large current plastic casing type circuit breaker |
| CN101562314A (en) * | 2008-04-15 | 2009-10-21 | 通用电气公司 | Racking mechanism for a circuit breaker |
| CN204046037U (en) * | 2014-08-27 | 2014-12-24 | 台州市瑞洲电器有限公司 | A kind of universal circuit breaker drawer seat |
| CN205231599U (en) * | 2015-11-09 | 2016-05-11 | 浙江正泰电器股份有限公司 | Safe separating board of circuit breaker |
| CN207302904U (en) * | 2017-08-31 | 2018-05-01 | 施耐德电器工业公司 | Force brake separating mechanism and switchgear |
-
2017
- 2017-08-31 CN CN201710777416.8A patent/CN109427493B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5837949A (en) * | 1996-06-28 | 1998-11-17 | Siemens Energy & Automation, Inc. | Circuit breaker draw apparatus and system with a slider flange attached to the active draw bracket |
| CN1577685A (en) * | 2003-07-29 | 2005-02-09 | 浙江华一电器厂 | Withdrawing device with mechanical interlock for Large current plastic casing type circuit breaker |
| CN101562314A (en) * | 2008-04-15 | 2009-10-21 | 通用电气公司 | Racking mechanism for a circuit breaker |
| CN204046037U (en) * | 2014-08-27 | 2014-12-24 | 台州市瑞洲电器有限公司 | A kind of universal circuit breaker drawer seat |
| CN205231599U (en) * | 2015-11-09 | 2016-05-11 | 浙江正泰电器股份有限公司 | Safe separating board of circuit breaker |
| CN207302904U (en) * | 2017-08-31 | 2018-05-01 | 施耐德电器工业公司 | Force brake separating mechanism and switchgear |
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| Publication number | Publication date |
|---|---|
| CN109427493A (en) | 2019-03-05 |
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