CN215988497U - Reverse interlocking device of isolating circuit breaker - Google Patents
Reverse interlocking device of isolating circuit breaker Download PDFInfo
- Publication number
- CN215988497U CN215988497U CN202122198899.0U CN202122198899U CN215988497U CN 215988497 U CN215988497 U CN 215988497U CN 202122198899 U CN202122198899 U CN 202122198899U CN 215988497 U CN215988497 U CN 215988497U
- Authority
- CN
- China
- Prior art keywords
- state
- rod
- circuit breaker
- linkage
- closing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The utility model provides a reverse interlocking device of an isolating circuit breaker, which belongs to the technical field of isolating circuit breakers and comprises a linkage plate coaxially fixed on an operating shaft of an isolating switch, a lock rod linked with the linkage plate and an interlocking block in clearance interference fit with the lock rod, wherein the linkage plate is linked with the lock rod through a linkage rod, and when the lock rod is matched with the interlocking block, a first state of allowing a closing half shaft to rotate and buckling with a closing pawl and a second state of limiting the rotation of the closing half shaft and being incapable of buckling with the closing pawl are provided. When the isolating switch operating shaft is switched off, the lock rod is in the second state, and when the isolating switch operating shaft is switched on, the lock rod is in the first state. The utility model ensures the reverse interlocking function that the circuit breaker can not be switched on under the switching-off state of the isolating switch, has simple integral structure and few parts, is convenient to realize and is suitable for practical use.
Description
Technical Field
The utility model relates to the technical field of switches, in particular to a reverse interlocking device of an isolation circuit breaker.
Background
For the combined switch of the disconnecting switch, the circuit breaker and the grounding switch, normal anti-misoperation interlocking is provided, particularly for the disconnecting switch, the closing operation can only be to close the disconnecting switch firstly and then close the circuit breaker, and the opening operation can only be to open the circuit breaker firstly and then separate the disconnecting switch, so as to prevent the disconnecting switch from being closed by mistake when electricity is charged. The circuit breaker can be closed in the disconnecting state of the disconnecting switch, and whether the opening and closing of the circuit breaker are normal or not is verified through testing after the circuit breaker is convenient to overhaul. However, for safety reasons, some customers have a need for a combined disconnector and circuit breaker switch to have a limited operation of "the disconnector is opened and the circuit breaker can no longer be closed".
Based on this, the present application is proposed.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides a reverse interlocking device of an isolating circuit breaker, which meets the use requirement that the circuit breaker can not be closed again when an isolating switch is opened in the prior art.
To achieve the above object, the reverse interlock apparatus of the disconnecting circuit breaker of the present invention has the following structure: comprises that
The linkage plate is arranged on the disconnecting switch operating shaft and synchronously rotates along with the disconnecting switch operating shaft;
the locking rod is linked with the linkage plate through a linkage rod and swings, rotates or does linear motion when the linkage rod and the linkage plate are matched and swing;
the interlocking block is arranged on the closing half shaft, and the locking rod is driven by the linkage rod to be in interference fit with the interlocking block so as to form a first state of allowing the closing half shaft to rotate and buckling with the closing pawl and a second state of limiting the rotation of the closing half shaft and not buckling with the closing pawl;
the swinging or linear motion of the lock rod is used for realizing the switching between the first state and the second state;
when the isolating switch operating shaft is switched off, the lock rod is in the second state, and when the isolating switch operating shaft is switched on, the lock rod is in the first state.
The utility model further provides the following: the locking rod is characterized by further comprising a return spring, and the return spring generates acting force for pulling back and switching the locking rod to the second state when being deformed.
The utility model further provides the following: the linkage rod is a lever, and the lock rod moves linearly.
The utility model further provides the following: the switching-on half shaft is provided with a side slot, the switching-on pawl is a swing rod with a fixed middle part and two swingable ends, and one end of the switching-on pawl is provided with another reset spring to enable the switching-on pawl to have a first trend state of exiting from the side slot;
meanwhile, the other end of the closing pawl is linked with a mechanism for displaying the energy storage state of the isolating switch, and one end of the closing pawl has a second trend state embedded in the side groove when the energy storage of the isolating switch is finished.
The utility model further provides the following: the linkage plate is a fan-shaped plate, an arc-shaped groove is formed in the fan-shaped plate and arranged along the direction of a fan-shaped arc edge of the fan-shaped plate, and one end of the linkage rod is hinged in the arc-shaped groove.
The utility model is further provided with the following components, wherein the lock rod is vertically arranged and can reciprocate up and down; the linkage rod is horizontally arranged and is hinged with the bottom of the lock rod.
The utility model further provides the following: the electric interlocking mechanism is provided with a triggering sleeve which is arranged on the disconnecting switch operating shaft and synchronously rotates along with the disconnecting switch operating shaft, and an electronic sensor which is triggered when the disconnecting switch operating shaft rotates from a switching-on position to a switching-off position.
The term "triggered" in the present invention means that the electronic signal generated by the electronic sensor undergoes a signal change corresponding to the change in the operating state of the operating shaft of the disconnector, for example, from a signal with output to no signal, or from no signal to a signal with output, or from a signal with low voltage (e.g., 0.8V) to a signal with high voltage (e.g., 1.2V or more), or from a signal with high voltage (e.g., 1.2V) to a signal with low voltage (e.g., 0.8V).
The utility model further provides the following: the trigger sleeve is a cam sleeve; and/or the electronic sensor is a micro switch or a Hall switch.
The utility model has the following beneficial effects: in the utility model, by a linkage mechanism consisting of the linkage plate, the linkage rod, the lock rod and the like, the opening and closing states with large rotation angle of the isolating switch shaft with a large rotation angle (nearly 90 degrees) can be matched with the half shaft with a small rotation angle, and the stroke difference between the opening and closing states is overcome. And then the rotation of the closing half shaft is limited through the limiting effect of the interlocking block, so that the following action relationship is realized: under the switching-off state of the isolating switch, the linkage rod drives the lock rod to prop against the interlocking block, so that the switching-on half shaft is in a tripping state, and the circuit breaker cannot be switched on; under the closing state of the isolating switch, the linkage plate swings to drive the linkage rod to move, so that the locking rod loosens the interlocking block, the closing half shaft can be buckled with the closing pawl, and the breaker can be closed.
Through the action relation, the utility model ensures the reverse interlocking function that the breaker can not be switched on under the switching-off state of the isolating switch, and meets the actual requirement.
The utility model has simple integral structure, few parts, convenient realization and practical use, and is provided with a return spring to ensure the return of the lock rod so as to ensure the reliable switch-on of the circuit breaker.
Drawings
FIG. 1 is a general schematic diagram of an embodiment of the present invention.
Fig. 2 is a partially enlarged schematic view of fig. 1.
Fig. 3 is a first structural diagram according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a second embodiment of the present invention.
Fig. 5 is a schematic diagram illustrating an open state of the closing pawl according to an embodiment of the present invention.
Fig. 6 is a partially enlarged view of fig. 3.
FIG. 7a is a schematic backside view of the device in the open state according to the embodiment of the present invention.
FIG. 7b is a schematic front view of the embodiment of the present invention in the open state.
Fig. 8a is a back schematic view of a closing state according to an embodiment of the present invention.
Fig. 8b is a schematic front view of a closing state according to an embodiment of the present invention.
Fig. 9 is a schematic diagram of a closing state of the closing pawl according to the embodiment of the present invention.
Fig. 10 is a partially enlarged view of fig. 9.
Reference numerals: 1. an isolating switch operating shaft; 2. an outer panel; 21. a disconnecting switch hole cover plate; 11. A trigger sleeve; 12. a microswitch; 31. a linkage plate; 32. a linkage lever; 121. a trigger plate; 111. a trigger slot; 311. an arc-shaped linkage groove; 4. a half shaft; 34. a lock lever; 342. a first spring post; 343. a first return spring; 35. an interlock block; 41. an operating handle; 5. a fulcrum; 51. a first radial bump; 61. a pressing block; 52. a radial convex block II; 6. a turntable; 53. a second return spring; 42. and (4) side grooving.
Detailed Description
In this embodiment, the term "movably hinged" means that the first linking member is provided with a hinge slot extending along a specific direction and having a certain length, and the second linking member linked with the first linking member is provided with a hinge shaft in insertion fit with the hinge slot, so that the first linking member and the second linking member can be hinged by the fit of the hinge shaft and the hinge slot, and the hinge shaft on the second linking member can slide in the hinge slot in the specific direction to reduce or even reduce the displacement between the linking structures in other directions, so that the second linking member moves in a single direction according to a preset direction.
If the direction in which the length direction of the link lever 32 is set is the horizontal direction, the lock lever 34 is vertically disposed with respect to the link lever 32, and in this mechanical interlock structure, the lock lever 34 has a certain length, and the bottom portion thereof may extend to the level of the position of the disconnecting switch operating shaft 1, and the top portion thereof may extend to the level of the position of the half shaft 4. In this embodiment, the locking rod 34 is provided with a vertical slot at the top and bottom ends thereof, and the vertical slot is inserted into a mounting post on an inner panel and can slide up and down in the vertical direction relative to the mounting post. The locking rod 34 and the inner panel act through a return spring 343 and a spring post 342 fixed on the locking rod 34 to provide an auxiliary force for moving the locking rod 34 upwards and to keep the locking rod 34 stable.
If the axial direction of the disconnecting switch operating shaft 1 is the horizontal X-axis direction, the plane of the sector plate mounted thereon is the Y-axis direction, the link lever 32 is arranged along the horizontal Y-axis direction, and the lock lever 34 is arranged in the Z-axis direction and can slide up and down in the Z-axis direction.
In actual operation, as shown in fig. 7b, during opening, the disconnecting switch operating shaft 1 rotates counterclockwise by a large angle (for example, 90 °), the fan-shaped linkage plate 31 rotates along with the rotation of the disconnecting switch operating shaft 1, during this process, one end of the linkage lever 32 movably hinged with the linkage plate 31 swings with a small amplitude, and under the lever action, the other end of the linkage lever 32 corresponds to one end of the linkage lever 32 and swings with a small amplitude. Since the lock lever 34 is movably hinge-fitted to the other end of the link lever 32, the lock lever 34 is moved up and down in the Z-axis direction by the other end of the link lever 32.
Referring to fig. 5 to 8b, the closing half shaft 4 is inserted into the inner panel, the front half part of the closing half shaft is located between the inner panel and the outer panel 2, and a rotating handle for operating the closing half shaft to rotate is disposed on the closing half shaft, the rear half part of the closing half shaft 4 is located between the inner panel and the circuit breaker, a linkage sleeve is coaxially fixed on the linkage sleeve, and the linkage sleeve is radially provided with the outward interlocking block 35. In the embodiment, as can be seen from fig. 7a, the highest position of the top of the lock rod 34 is not at the level of the position where the axis of the switching-on half shaft 4 is located, but the top of the lock rod 34 abuts against the bottom of the interlocking block 35, and when the lock rod 34 moves to the highest position, the lock rod 34 pushes the interlocking block 35 and the switching-on half shaft 4 to swing upwards, and the top of the lock rod 34 is inserted into the swing range of the interlocking block 35. As can be seen from fig. 8a, the lowest position of the top of the locking bar 34 is lower than the lowest point of the closing half shaft 4, but when the locking bar 34 moves to the lowest position, the top of the locking bar 34 has completely exited the swing range of the interlocking block 35, and the closing half shaft 4 can be operated to rotate to be engaged with the closing pawl.
Referring to fig. 5 and 6, the front half portion of the closing half shaft 4 is provided with a side slot 42, a closing pawl is disposed near the side slot 42 and intermittently engaged with the side slot, as shown in fig. 5, the closing pawl includes a sleeve body, a fulcrum 5, a first radial protrusion 51 and a second radial protrusion 52, the sleeve body is rotatably sleeved on the fulcrum 5, the first radial protrusion 51 and the second radial protrusion 52 are protrusions extending from a radial sidewall of the sleeve body in two different directions at a certain obtuse angle, the first radial protrusion 51 is engaged with a pressing block 61, the pressing block 61 is fixed near an outer diameter edge of a forward end surface of a turntable 6, and the turntable 6 is coaxially fixed on the energy storage rotating shaft. As shown in fig. 6, each time the turntable 6 rotates one turn, the pressing block 61 pushes the first radial projection 51 to swing outward by a small amplitude away from the position of the closing half shaft 4, and synchronously, the second radial projection 52 moves close to the closing half shaft 4 and swings inward by a small amplitude.
As shown in fig. 7b, when the locking lever 34 moves to the highest position, the interlocking block 35 is lifted up and cannot move downward, and the rotating handle linked with the closing half shaft 4 is fixed at the opening position and cannot rotate counterclockwise. At this moment, the opening of the side slot 42 on the closing half shaft 4 for matching with the closing pawl faces upwards, and the closing pawl cannot be buckled with the closing half shaft 4.
As shown in fig. 8a and 8b, when the lock lever 34 is moved to the lowest position and the interlocking block 35 is free to swing, the closing half shaft 4 can rotate counterclockwise under the operating handle 41 to make the opening of the side slot 42 face the radial projection two 52 of the closing pawl, when the pressing block 61 acts on the radial projection one 51, the radial projection two 52 is embedded into the side slot 42, and the closing pawl is buckled with the closing half shaft 4.
In addition, the second return spring 53 is provided in the present embodiment to make the closing pawl have a tendency to retreat into the exit side slot 42.
Through the structure and the action process, the reverse interlocking device with the disconnecting switch, the closing pawl and the half shaft 4 which can not be buckled and the breaker can not be closed is realized in the embodiment.
Example 2 this example differs from example 1 in that: the present embodiment further includes an electrical interlock mechanism, which is configured as shown in fig. 1, and is also installed near the disconnecting switch operating shaft 1 and is related to the operation and state of the disconnecting switch operating shaft 1: referring to fig. 2, the electric linkage mechanism includes a trigger sleeve 11 and a microswitch 12, the trigger sleeve 11 is a cam sleeve with a groove on a radial sidewall, and the groove is used as a trigger groove 111. The trigger sleeve 11 is installed on the disconnecting switch operating shaft 1 and rotates synchronously along with the disconnecting switch operating shaft 1. The micro switch 12 is arranged adjacent to the cam sleeve, the trigger plate 121 on the micro switch 12 is in clearance fit with the groove bottom of the trigger groove 111, the trigger plate 121 is in interference fit with the other radial side walls of the cam sleeve, and a button of the micro switch 12 in interference fit with the trigger plate 121 is pressed.
In the above structure, before the disconnecting switch operating shaft 1 rotates from the closing position to the opening position, the trigger plate 121 of the micro switch 12 is in abutting engagement with the other radial side walls of the cam sleeve and the trigger plate 121 presses the button of the micro switch 12, so that the micro switch 12 is in the conducting state, the branch circuit of the micro switch 12 is conducted and can output a signal. When the disconnecting switch operating shaft 1 rotates to the opening position, the trigger plate 121 enters the trigger groove 111 on the cam sleeve and loses the pressure for pressing the button all the time, and the micro switch 12 is switched off.
The microswitch 12 is connected in series with an automatic control circuit (the automatic control circuit is the prior art) for controlling the switching-on or switching-off of the circuit breaker, provides the switching-on state or switching-off state of the disconnecting switch operating shaft 1 for the microswitch, and controls the electrical interlocking process that the circuit breaker can not be switched on in the switching-off state of the disconnecting switch through program logic.
Of course, in this embodiment, the microswitch 12 may also be of a normally closed type, and finally the microswitch 12 only turns on the circuit where it is located and outputs a signal when the disconnecting switch operating shaft 1 rotates to the open position.
In addition, in other embodiments, a cam sleeve with radial side walls projecting relatively may be provided, and this configuration may also be provided in cooperation with the normally open microswitch 12.
In conclusion, the utility model provides the reverse interlocking device of the disconnecting circuit breaker, which has a simple structure and is convenient to implement.
Claims (8)
1. A reverse interlock device for a disconnecting circuit breaker, comprising: comprises that
The linkage plate is arranged on the disconnecting switch operating shaft and synchronously rotates along with the disconnecting switch operating shaft;
the locking rod is linked with the linkage plate through a linkage rod and swings, rotates or does linear motion when the linkage rod and the linkage plate are matched and swing;
the interlocking block is arranged on the closing half shaft, and the locking rod is driven by the linkage rod to be in intermittent interference fit with the interlocking block so as to form a first state of allowing the closing half shaft to rotate and buckling with the closing pawl and a second state of limiting the rotation of the closing half shaft and not buckling with the closing pawl;
the swinging or linear motion of the lock rod is used for realizing the switching between the first state and the second state;
when the isolating switch operating shaft is switched off, the lock rod is in the second state, and when the isolating switch operating shaft is switched on, the lock rod is in the first state.
2. The reverse interlock apparatus of the disconnecting circuit breaker according to claim 1, wherein: the locking rod is characterized by further comprising a return spring, and the return spring generates acting force for pulling back and switching the locking rod to the second state when being deformed.
3. The reverse interlock apparatus of the disconnecting circuit breaker according to claim 1, wherein: the linkage rod is a lever, and the lock rod moves linearly.
4. The reverse interlock apparatus of the disconnecting circuit breaker according to claim 1, wherein: the switching-on half shaft is provided with a side slot, the switching-on pawl is a swing rod with a fixed middle part and two swingable ends, and one end of the switching-on pawl is provided with another reset spring to enable the switching-on pawl to have a first trend state of exiting from the side slot;
meanwhile, the other end of the closing pawl is linked with a mechanism for displaying the energy storage state of the isolating switch, and one end of the closing pawl has a second trend state embedded in the side groove when the energy storage of the isolating switch is finished.
5. The reverse interlock apparatus of a disconnecting circuit breaker according to any of claims 1 to 4, wherein: the linkage plate is a fan-shaped plate, an arc-shaped groove is formed in the fan-shaped plate and arranged along the direction of a fan-shaped arc edge of the fan-shaped plate, and one end of the linkage rod is hinged in the arc-shaped groove.
6. The reverse interlock apparatus of the disconnecting circuit breaker according to claim 1, wherein: the electric interlocking mechanism is provided with a triggering sleeve which is arranged on the disconnecting switch operating shaft and synchronously rotates along with the disconnecting switch operating shaft, and an electronic sensor which is triggered when the disconnecting switch operating shaft rotates from a switching-on position to a switching-off position.
7. The reverse interlock apparatus of the disconnecting circuit breaker according to claim 6, wherein: the trigger sleeve is a cam sleeve; and/or the electronic sensor is a micro switch or a Hall switch.
8. The reverse interlock apparatus of the disconnecting circuit breaker according to claim 1, wherein: the lock rod is vertically arranged and can reciprocate up and down; the linkage rod is horizontally arranged and is hinged with the bottom of the lock rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122198899.0U CN215988497U (en) | 2021-09-10 | 2021-09-10 | Reverse interlocking device of isolating circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122198899.0U CN215988497U (en) | 2021-09-10 | 2021-09-10 | Reverse interlocking device of isolating circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215988497U true CN215988497U (en) | 2022-03-08 |
Family
ID=80465270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122198899.0U Active CN215988497U (en) | 2021-09-10 | 2021-09-10 | Reverse interlocking device of isolating circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215988497U (en) |
-
2021
- 2021-09-10 CN CN202122198899.0U patent/CN215988497U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2637081B2 (en) | Operating mechanism of electric circuit breaker | |
| US7186937B1 (en) | Rotational backlash compensating cam for stored energy circuit breaker charging motor control | |
| US7545245B2 (en) | Manual opening device and electrical switching apparatus employing the same | |
| RU2502149C2 (en) | Control device of electrical switching device, which contains contact welding indication device, and electrical switching device containing one above said device | |
| EP1643529B1 (en) | Rocker switch with trip indication | |
| JPH08279330A (en) | Breaker | |
| CN215988497U (en) | Reverse interlocking device of isolating circuit breaker | |
| EP3376521B1 (en) | Magnetic trip device for circuit breaker | |
| CN106531579B (en) | The actuating mechanism of residual current action breaker | |
| CN2407450Y (en) | Actuating mechanism of small size circuit breaker | |
| CN216980439U (en) | Operating mechanism | |
| CN213519667U (en) | Electric operating mechanism for molded case circuit breaker | |
| CN211320033U (en) | Circuit breaker contact mechanism with quick switching-on function | |
| CN109360753B (en) | Mechanical interlocking device of medium-voltage dual-power automatic change-over switch and dual-power device | |
| CN208548329U (en) | The operating mechanism and breaker of breaker | |
| US11817276B2 (en) | Low voltage switching device | |
| CN213341399U (en) | Automatic switch-on position lock for draw-out circuit breaker | |
| CN220914130U (en) | Operating mechanism for controlling and protecting switch electric appliance | |
| CN220604523U (en) | Closing locking device of switch equipment | |
| CN213816030U (en) | Operating device and circuit breaker | |
| JP3161002B2 (en) | Circuit breaker operating mechanism | |
| CN215680586U (en) | Driving system of switch operating mechanism | |
| CN218039075U (en) | Plug-in circuit breaker | |
| CN216435816U (en) | Connecting rod action structure of circuit breaker | |
| CN214505288U (en) | Single spring operating mechanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |