CN217507144U - Interlocking mechanism of high-voltage switch cabinet - Google Patents
Interlocking mechanism of high-voltage switch cabinet Download PDFInfo
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- CN217507144U CN217507144U CN202220853660.4U CN202220853660U CN217507144U CN 217507144 U CN217507144 U CN 217507144U CN 202220853660 U CN202220853660 U CN 202220853660U CN 217507144 U CN217507144 U CN 217507144U
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- crank arm
- main shaft
- shaft
- circuit breaker
- movable baffle
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Abstract
An interlocking mechanism of a high-voltage switch cabinet comprises a switch cabinet, wherein an operation hole is formed in a panel of the switch cabinet; the circuit breaker is provided with a circuit breaker main shaft, and the circuit breaker is also provided with a release in a matching way, wherein the release is provided with a release shaft; a movable baffle is vertically and slidably arranged in front of the operation hole of the switch cabinet panel; the movable baffle is provided with a round hole; the interlocking shaft is transversely extended and fixedly connected with a first crank arm and a second crank arm; a main shaft crank arm is fixedly connected to the main shaft of the circuit breaker, and the swinging end of the main shaft crank arm is connected with the swinging end of the first crank arm through a vertical transmission rod; the trip shaft is fixedly connected with a trip shaft crank arm, and the swinging end of the trip shaft crank arm is connected with the middle part of the first crank arm by an oblique transmission rod; the movable baffle is fixedly connected with a transmission block. The utility model discloses can make circuit breaker main shaft and earthing switch operating device and/or isolator operating device form reliable interlocking relation.
Description
Technical Field
The utility model belongs to the technical field of high tension switchgear, concretely relates to high tension switchgear interlocking device.
Background
The inside of the high-voltage switch cabinet is provided with a circuit breaker, an earthing switch and an isolating switch. The grounding switch and the isolating switch are respectively provided with an operating mechanism and an operating handle matched with the grounding switch and the isolating switch, the grounding switch operating mechanism and the isolating switch operating mechanism are provided with corresponding operating holes on a panel of the switch cabinet, and when the working states of the grounding switch and the isolating switch need to be changed, the operating handle penetrates through the operating holes to control the operating mechanism of the corresponding electrical component. The circuit breaker is provided with a circuit breaker main shaft, and when the circuit breaker main shaft rotates to a switching-on position, the circuit breaker is in a switching-on state; when the main shaft of the circuit breaker rotates to the opening position, the circuit breaker is in an opening state. The rotation action of the main shaft of the circuit breaker is controlled by a circuit breaker button arranged on a panel of the switch cabinet. In addition, the circuit breaker is also provided with a release in a matching way, the release is provided with a circuit breaker release shaft, and when the circuit breaker release shaft rotates to a release position, a main shaft of the circuit breaker cannot rotate to a switch-on position; when the breaker trip shaft rotates to the buckling position, the breaker main shaft can rotate to the switching-on position.
The following interlocking relationship must be formed between the breaker and the disconnecting switch and the grounding switch: 1. when the circuit breaker is in a closing state, the disconnecting switch and the grounding switch are forbidden to be operated; 2. when the circuit breaker is in the state of opening the switch, generally be in the maintenance process this moment, can pass earthing switch, isolator of cubical switchboard panel operation by operating handle, but must stop to make the circuit breaker unexpected to get back to the state of closing the switch because of the maloperation (for example mistake press the circuit breaker button on the cubical switchboard panel).
In the prior art, various interlocking structures, including mechanical and electronic, have been designed to achieve the above interlocking function. However, the interlocking control structure of the existing switch cabinet is not only complex, but also has poor reliability of interlocking relationship, has the possibility of misoperation, and hides potential safety hazards.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to overcoming the above-mentioned disadvantages and providing an interlocking mechanism for a high voltage switch cabinet, which can make the main shaft of a circuit breaker and the operating mechanism of a grounding switch and/or the operating mechanism of a disconnecting switch form a reliable interlocking relationship.
The purpose can be realized according to the following scheme: a high-voltage switch cabinet interlocking mechanism comprises a switch cabinet, wherein a circuit breaker, a grounding switch and an isolating switch are arranged in the switch cabinet, wherein the grounding switch and the isolating switch are respectively provided with an operating mechanism and an externally matched operating handle, and the grounding switch operating mechanism and the isolating switch operating mechanism are correspondingly provided with operating holes on a switch cabinet panel; the circuit breaker is provided with a circuit breaker main shaft, and the rotation action of the circuit breaker main shaft is controlled by a circuit breaker button arranged on a switch cabinet panel; the circuit breaker is also provided with a release in a matching way, and the release is provided with a release shaft; the extension directions of the main shaft and the trip shaft of the circuit breaker are transverse;
the switch cabinet is mainly characterized in that a movable baffle plate is vertically and slidably arranged in front of an operation hole of a switch cabinet panel; the movable baffle is provided with a round hole; when the movable baffle is positioned at the lowest point of the vertical sliding stroke, the movable baffle covers the operation hole; when the movable baffle is positioned at the highest point of the vertical sliding stroke, the round hole of the movable baffle is aligned with the operation hole;
the interlocking shaft is fixedly connected with a first crank arm and a second crank arm, the first crank arm is vertically connected with a first end of the interlocking shaft, the second crank arm is vertically connected with a second end of the interlocking shaft, and the first crank arm and the second crank arm synchronously swing around the central axis of the interlocking shaft along with the interlocking shaft;
the circuit breaker main shaft is fixedly connected with a main shaft crank arm, the swinging end of the main shaft crank arm is connected with the swinging end of a first crank arm through a vertical transmission rod, a first transmission pin is arranged at the swinging end of the main shaft crank arm, the axial direction of the first transmission pin is horizontal, a first long hole is formed in the lower end of the vertical transmission rod, and the first transmission pin is inserted into the first long hole in the lower end of the vertical transmission rod;
the trip shaft is fixedly connected with a trip shaft crank arm, and the swinging end of the trip shaft crank arm is connected with the middle part of the first crank arm by an oblique transmission rod; the movable baffle is fixedly connected with a transmission block, the transmission block is provided with a second long hole, a second transmission pin is arranged at the swinging end of the second crank arm, the axial direction of the second transmission pin is transverse, and the second transmission pin penetrates through the second long hole of the transmission block;
when the main shaft of the circuit breaker is positioned at a switching-on position, the swinging end of the main shaft crank arm is positioned at the lower end of the swinging track of the main shaft crank arm, the swinging end of the first crank arm and the swinging end of the second crank arm are also positioned at the lower end of the swinging track of the main shaft crank arm, the first transmission pin is positioned at the lower end point of the first long hole of the vertical transmission rod, and the vertical transmission rod limits the movable baffle at the lowest point of the vertical sliding stroke of the vertical transmission rod through the first crank arm, the interlocking shaft, the second crank arm, the second transmission pin and the transmission block; the breaker main shaft limits the trip shaft at a buckling position through a main shaft crank arm, an oblique transmission rod and a trip shaft crank arm;
when the main shaft of the circuit breaker is in a brake separating position and the movable baffle is positioned at the lowest point of the vertical sliding stroke of the circuit breaker, the swinging end of the main shaft crank arm is positioned at the upper end of the swinging track of the main shaft crank arm, the swinging end of the first crank arm and the swinging end of the second crank arm are also positioned at the upper end of the swinging track of the first crank arm, and the first transmission pin is positioned at the upper end section of the first long hole of the vertical transmission rod;
when the main shaft of the circuit breaker is in a brake separating position and the movable baffle is located at the highest point of the vertical sliding stroke of the movable baffle, the first transmission pin is located at the lower end point of the first long hole; the movable baffle limits the tripping shaft at a tripping position through the transmission block, the second crank arm, the interlocking shaft, the first crank arm, the oblique transmission rod and the tripping shaft crank arm.
The movable baffle is provided with a handle.
The utility model has the advantages of it is following and effect:
one, the utility model discloses can make circuit breaker main shaft and operation hole adjustable fender constitute following reliable interlocking relation between the two: when the main shaft of the circuit breaker is in a switching-on position, the circular hole of the movable baffle covers the operation hole, the operation handle cannot be inserted into the operation hole, and the operation mechanism (the grounding switch operation mechanism and/or the disconnecting switch operation mechanism) cannot be operated; on the contrary, when the main shaft of the circuit breaker is in the opening position, the movable baffle can vertically slide, the round hole of the movable baffle can be aligned to the operation hole when needed, the operation handle can be inserted into the operation hole, and the operation mechanism (the grounding switch operation mechanism and/or the disconnecting switch operation mechanism) can be operated.
Two, when adjustable fender's round hole aligns the handle hole, the trip shaft is injectd in the dropout position, therefore when operation earthing switch operating device and/or isolator operating device, even the mistake is pressed the circuit breaker button, the circuit breaker also can not be combined floodgate, guarantees the circuit breaker at the separating brake state, can reassurance to overhaul this moment, can set one's mind at rest and operate isolator, earthing switch.
Drawings
Fig. 1 is a schematic diagram of a three-dimensional structure of the embodiment of the present invention in a closing state of the circuit breaker.
Fig. 2 is a partial schematic view of fig. 1.
Fig. 3 is a schematic front view of the main components of the structure shown in fig. 1.
Fig. 4 is a partially enlarged schematic view of the structure shown in fig. 2.
Fig. 5 is a side view of the structure shown in fig. 3.
Fig. 6 is a partially enlarged view of a in fig. 5.
Fig. 7 is a partially enlarged schematic view of B in fig. 5.
Fig. 8 is a schematic view of the embodiment of fig. 1 in a changed state when the circuit breaker is changed to an open state but the flapper remains at the lowest point of its vertical sliding travel.
Fig. 9 is a partially enlarged view of C in fig. 8.
Fig. 10 is a schematic diagram of the embodiment shown in fig. 1 in a changed state when the circuit breaker is changed to an open state and the movable blocking plate moves to the highest point of the vertical sliding stroke.
Fig. 11 is a side view schematic diagram of the state shown in fig. 10.
Fig. 12 is a perspective view schematically illustrating the state shown in fig. 11.
Detailed Description
The interlocking mechanism for the high-voltage switch cabinet shown in fig. 1, 2, 3, 4 and 5 comprises a switch cabinet, wherein a circuit breaker, an earthing switch and an isolating switch are arranged in the switch cabinet, wherein the earthing switch and the isolating switch are respectively provided with an operating mechanism and an externally matched operating handle, and the earthing switch operating mechanism and the isolating switch operating mechanism are provided with operating holes 9 corresponding to a panel of the switch cabinet; the circuit breaker is provided with a circuit breaker main shaft 11, and the rotation action of the circuit breaker main shaft 11 is controlled by a circuit breaker button arranged on a switch cabinet panel; the circuit breaker is also provided with a release in a matching way, and the release is provided with a release shaft 21; the extension directions of the breaker main shaft 11 and the tripping shaft 21 are transverse; a movable baffle 7 is vertically and slidably arranged in front of an operation hole 9 of the switch cabinet panel; the movable baffle 7 is provided with a round hole 70; when the movable baffle 7 is located at the lowest point of the vertical sliding stroke, the movable baffle covers the operation hole 9, as shown in fig. 1; when the flapper 7 is at the highest point of its vertical sliding travel, the flapper circular hole 70 is aligned with the access hole 9, as shown in fig. 10; the flapper 7 is provided with a handle 71.
The interlocking device is further provided with an interlocking shaft 8 extending transversely, a first crank arm 31 and a second crank arm 32 are fixedly connected with the interlocking shaft 8, the first crank arm 31 is vertically connected with a first end of the interlocking shaft 8, the second crank arm 32 is vertically connected with a second end of the interlocking shaft 8, and the first crank arm 31 and the second crank arm 32 synchronously swing around the central axis of the interlocking shaft along with the interlocking shaft 8; the breaker main shaft 11 is fixedly connected with a main shaft crank arm 12, the swinging end of the main shaft crank arm 12 is connected with the swinging end of the first crank arm 31 by a vertical transmission rod 61, wherein the swinging end of the main shaft crank arm 12 is provided with a first transmission pin 51, the axial direction of the first transmission pin 51 is horizontal, the lower end of the vertical transmission rod 61 is provided with a first long hole 41, and the first transmission pin 51 is inserted into the first long hole 41 at the lower end of the vertical transmission rod 61; the trip shaft 21 is fixedly connected with a trip shaft crank arm 22, and the swinging end of the trip shaft crank arm 22 is connected with the middle part of the first crank arm 31 by an oblique transmission rod 62; the movable baffle 7 is fixedly connected with a transmission block 72, the transmission block 72 is provided with a second long hole 42, the swinging end of the second crank arm 32 is provided with a second transmission pin 52, the axial direction of the second transmission pin 52 is transverse, and the second transmission pin 52 penetrates through the second long hole 42 of the transmission block, as shown in fig. 5, 6 and 7.
When the main shaft 11 of the circuit breaker is at the closing position, the swing end of the main shaft crank arm 12 is located at the lower end of the swing track, the swing end of the first crank arm 31 and the swing end of the second crank arm 32 are also located at the lower end of the swing track, the first transmission pin 51 is located at the lower end point of the first long hole 41 of the vertical transmission rod 61, and the vertical transmission rod 61 limits the movable baffle 7 at the lowest point of the vertical sliding stroke of the vertical transmission rod through the first crank arm 31, the interlocking shaft 8, the second crank arm 32, the second transmission pin 52 and the transmission block 72; the breaker spindle 11 limits the trip shaft 21 at a buckling position through the spindle crank arm 12, the oblique transmission rod 62 and the trip shaft crank arm 22, as shown in fig. 1 to 7;
when the main shaft 11 of the circuit breaker is in the opening position and the movable baffle 7 is located at the lowest point of the vertical sliding stroke, the swing end of the main shaft crank arm 12 is located at the upper end of the swing track thereof, the swing end of the first crank arm 31 and the swing end of the second crank arm 32 are also located at the upper end of the swing track thereof, and the first transmission pin 51 is located at the upper end section of the first long hole 41 of the vertical transmission rod 61, as shown in fig. 8 and 9;
when the breaker main shaft 11 is at the opening position and the movable baffle 7 is located at the highest point of the vertical sliding stroke, the first transmission pin 51 is located at the lower end point of the first long hole 41; the movable baffle 7 limits the trip shaft 21 to a trip position through the transmission block 72, the second crank arm 32, the interlocking shaft 8, the first crank arm 31, the diagonal transmission rod 62 and the trip shaft crank arm 22, as shown in fig. 10, 11 and 12.
The working principle of the above embodiment is as follows:
under the normal working state, the breaker main shaft 11 is at the closing position, the breaker main shaft 11 limits the trip shaft 21 at the buckling position through the main shaft crank arm 12, the oblique transmission rod 62 and the trip shaft crank arm 22, the swing end of the main shaft crank arm 12 is positioned at the lower end of the swing track of the main shaft crank arm, the swing end of the first crank arm 31 and the swing end of the second crank arm 32 are also positioned at the lower end of the swing track of the first crank arm, the first transmission pin 51 is positioned at the lower end point of the first long hole 41, and the movable baffle 7 is limited at the lowest point of the vertical sliding stroke of the movable baffle; the circular hole 70 of the flapper covers the operation hole 9, the operation handle cannot be inserted into the operation hole 9, and the operation mechanism (the earthing switch operation mechanism and/or the disconnecting switch operation mechanism) cannot be operated, as shown in fig. 1 to 7.
When maintenance is needed, the breaker button is pressed to enable the breaker spindle 11 to be in the opening position, the swing end of the spindle crank arm 12 is located at the upper end of the swing track, the swing end of the first crank arm 31 and the swing end of the second crank arm 32 also move to the upper end of the swing track, and the movable baffle 7 is still temporarily located at the lowest point of the vertical sliding stroke, so that the first transmission pin 51 is located at the upper end section of the first long hole 41 of the vertical transmission rod 61 (which means that the vertical transmission rod 61 has the freedom degree of moving upwards), as shown in fig. 8 and 9; next, if the disconnecting switch and the grounding switch need to be operated, the movable baffle 7 can be pulled upwards by hand through the handle 71, so that the movable baffle 7 moves upwards to the highest point of the vertical sliding stroke, the round hole 70 of the movable baffle is aligned with the operation hole 9, the operation handle can be inserted into the operation hole 9, and the operation mechanism (the grounding switch operation mechanism and/or the disconnecting switch operation mechanism) can be operated, as shown in fig. 10, 11 and 12. On the other hand, in the process of pulling up the movable baffle 7, the movable baffle 7 drives the trip shaft 21 to the trip position through the transmission block 72, the second crank arm 32, the interlocking shaft 8, the first crank arm 31, the oblique transmission rod 62 and the trip shaft crank arm 22, so that even if a breaker button of a switch cabinet panel is pressed by mistake at the moment, the breaker cannot be switched on, the breaker is ensured to be in a switching-off state, the breaker can be maintained at the moment, and the disconnecting switch and the grounding switch can be operated safely, as shown in fig. 10, 11 and 12.
Claims (2)
1. A high-voltage switch cabinet interlocking mechanism comprises a switch cabinet, wherein a circuit breaker, a grounding switch and an isolating switch are arranged in the switch cabinet, wherein the grounding switch and the isolating switch are respectively provided with an operating mechanism and an externally matched operating handle, and the grounding switch operating mechanism and the isolating switch operating mechanism are correspondingly provided with operating holes on a switch cabinet panel; the circuit breaker is provided with a circuit breaker main shaft, and the rotation action of the circuit breaker main shaft is controlled by a circuit breaker button arranged on a switch cabinet panel; the circuit breaker is also provided with a release in a matching way, and the release is provided with a release shaft; the extension directions of the main shaft and the trip shaft of the circuit breaker are transverse;
the method is characterized in that: a movable baffle is vertically and slidably arranged in front of an operation hole of the switch cabinet panel; the movable baffle is provided with a round hole; when the movable baffle is positioned at the lowest point of the vertical sliding stroke, the movable baffle covers the operation hole; when the movable baffle is positioned at the highest point of the vertical sliding stroke, the round hole of the movable baffle is aligned with the operation hole;
the interlocking shaft is fixedly connected with a first crank arm and a second crank arm, the first crank arm is vertically connected with a first end of the interlocking shaft, the second crank arm is vertically connected with a second end of the interlocking shaft, and the first crank arm and the second crank arm synchronously swing around the central axis of the interlocking shaft along with the interlocking shaft;
the circuit breaker main shaft is fixedly connected with a main shaft crank arm, the swinging end of the main shaft crank arm is connected with the swinging end of a first crank arm through a vertical transmission rod, a first transmission pin is arranged at the swinging end of the main shaft crank arm, the axial direction of the first transmission pin is horizontal, a first long hole is formed in the lower end of the vertical transmission rod, and the first transmission pin is inserted into the first long hole in the lower end of the vertical transmission rod;
the trip shaft is fixedly connected with a trip shaft crank arm, and the swinging end of the trip shaft crank arm is connected with the middle part of the first crank arm by an oblique transmission rod; the movable baffle is fixedly connected with a transmission block, the transmission block is provided with a second long hole, a second transmission pin is arranged at the swinging end of the second crank arm, the axial direction of the second transmission pin is transverse, and the second transmission pin penetrates through the second long hole of the transmission block;
when the main shaft of the circuit breaker is positioned at a switching-on position, the swinging end of the main shaft crank arm is positioned at the lower end of the swinging track of the main shaft crank arm, the swinging end of the first crank arm and the swinging end of the second crank arm are also positioned at the lower end of the swinging track of the main shaft crank arm, the first transmission pin is positioned at the lower end point of the first long hole of the vertical transmission rod, and the vertical transmission rod limits the movable baffle at the lowest point of the vertical sliding stroke of the vertical transmission rod through the first crank arm, the interlocking shaft, the second crank arm, the second transmission pin and the transmission block; the breaker main shaft limits the trip shaft at a buckling position through a main shaft crank arm, an oblique transmission rod and a trip shaft crank arm;
when the main shaft of the circuit breaker is in a brake separating position and the movable baffle is positioned at the lowest point of the vertical sliding stroke of the circuit breaker, the swinging end of the main shaft crank arm is positioned at the upper end of the swinging track of the main shaft crank arm, the swinging end of the first crank arm and the swinging end of the second crank arm are also positioned at the upper end of the swinging track of the first crank arm, and the first transmission pin is positioned at the upper end section of the first long hole of the vertical transmission rod;
when the main shaft of the circuit breaker is in a brake opening position and the movable baffle is located at the highest point of the vertical sliding stroke of the movable baffle, the first transmission pin is located at the lower end point of the first long hole; the movable baffle limits the tripping shaft at a tripping position through the transmission block, the second crank arm, the interlocking shaft, the first crank arm, the oblique transmission rod and the tripping shaft crank arm.
2. The high voltage switch cabinet interlock mechanism of claim 1, wherein: the movable baffle is provided with a handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220853660.4U CN217507144U (en) | 2022-04-14 | 2022-04-14 | Interlocking mechanism of high-voltage switch cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220853660.4U CN217507144U (en) | 2022-04-14 | 2022-04-14 | Interlocking mechanism of high-voltage switch cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217507144U true CN217507144U (en) | 2022-09-27 |
Family
ID=83349303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220853660.4U Active CN217507144U (en) | 2022-04-14 | 2022-04-14 | Interlocking mechanism of high-voltage switch cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217507144U (en) |
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2022
- 2022-04-14 CN CN202220853660.4U patent/CN217507144U/en active Active
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