CN219936930U - Circuit breaker misoperation prevention structure - Google Patents
Circuit breaker misoperation prevention structure Download PDFInfo
- Publication number
- CN219936930U CN219936930U CN202320801076.9U CN202320801076U CN219936930U CN 219936930 U CN219936930 U CN 219936930U CN 202320801076 U CN202320801076 U CN 202320801076U CN 219936930 U CN219936930 U CN 219936930U
- Authority
- CN
- China
- Prior art keywords
- plate
- main shaft
- circuit breaker
- crank arm
- rotating shaft
- 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
- 230000002265 prevention Effects 0.000 title claims abstract description 14
- 230000005540 biological transmission Effects 0.000 claims abstract description 13
- 238000005452 bending Methods 0.000 claims description 16
- 230000033001 locomotion Effects 0.000 description 31
- 230000001681 protective effect Effects 0.000 description 20
- 238000010586 diagram Methods 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The utility model belongs to the technical field of electrical equipment-medium voltage switches, and particularly relates to an anti-misoperation structure of a circuit breaker. The automatic closing device comprises a pushing mechanism, a connecting rod, a connecting plate, a limiting bent plate and a closing rotating shaft structure, wherein a small protection door, a transmission arm, a connecting plate, a guide rod and a pushing mechanism screw rod are arranged on the pushing mechanism, the small protection door is connected to the guide rod through the transmission arm, and the connecting plate is welded on the guide rod; one end of the connecting rod is connected to the interlocking plate through the connecting plate, and the other end of the connecting rod is connected with the limiting bent plate; the switching-on rotating shaft structure comprises a main shaft, a main shaft crank arm, a main shaft interlocking plate and a switching-on rotating shaft, wherein the main shaft crank arm is arranged on the main shaft, and the main shaft interlocking plate is arranged on the main shaft crank arm. The utility model provides a safe and reliable misoperation prevention structure with simple structure, and the upgrade of products is promoted while the safety performance of a circuit breaker is improved by using a novel propulsion mechanism.
Description
Technical Field
The utility model belongs to the technical field of electrical equipment-medium voltage switches, and particularly relates to an anti-misoperation structure of a circuit breaker.
Background
In a 40.5kV vacuum circuit breaker, the shaking in and the shaking out of the circuit breaker are realized by virtue of the movement of a screw rod of a propelling mechanism. To prevent mishandling, mechanical interlocking structures are often added to the propulsion mechanism. However, this structure makes the propulsion mechanism more complex and additionally has the phenomenon of violent manipulation. If the circuit breaker is in place and the interlocking structure is locked, the operator has limited knowledge of the circuit breaker and still continues to shake the lead screw, which can cause the interlocking structure to fail due to violent deformation.
The end part of the screw rod of the existing 40.5kV breaker propulsion mechanism is not provided with a protective structure, so that certain requirements are met for operators, and the violent operation phenomenon is unavoidable. The mechanism interlocking device of the existing propulsion mechanism is complex in transmission structure, inconvenient to install and maintain, high in requirements on all components, difficult to control and unsuitable for large-scale production and use of circuit breaker products, and the reliability of the mechanical structure is continuously reduced along with frequent friction. Meanwhile, the novel propulsion mechanism largely avoids violent operation by being provided with a protective small door, but if only the novel propulsion mechanism is used, the following conditions still exist: the breaker is in the working position, and the operating handle can be switched on even if the operating handle is forgotten to be taken down, so that potential safety hazards exist.
Disclosure of Invention
The utility model provides a circuit breaker misoperation prevention structure which is simple in structure, safe and reliable, and solves the problems that in the prior art, the safety of shaking in and out of a circuit breaker is low, and misoperation and riot prevention can not be reliably and effectively performed.
The utility model relates to an anti-misoperation structure of a circuit breaker, which comprises a pushing mechanism, a connecting rod, a connecting plate, a limiting bent plate and a closing rotating shaft structure, wherein a small protection door, a transmission arm, a connecting plate, a guide rod and a pushing mechanism screw rod are arranged on the pushing mechanism; one end of the connecting rod is connected to the interlocking plate through the connecting plate, and the other end of the connecting rod is connected with the limiting bent plate; the switching-on rotating shaft structure comprises a main shaft, a main shaft crank arm, a main shaft interlocking plate and a switching-on rotating shaft, wherein the main shaft crank arm is arranged on the main shaft, and the main shaft interlocking plate is arranged on the main shaft crank arm.
Preferably, the connecting plate is provided with a waist hole in the horizontal direction, the interlocking plate is provided with a screw hole, and the connecting plate waist hole and the interlocking plate screw hole are internally penetrated by a guide screw.
Preferably, the limiting bending plate is connected to the chassis through a supporting plate, the supporting plate is fixed on the chassis, and a waist hole is formed in the front end of the supporting plate; and the limiting bending plate is provided with a guide screw which slides up and down in a waist hole arranged on the supporting plate.
Preferably, the main shaft crank arm is arranged on the main shaft, a waist hole is formed in the main shaft crank arm, and the main shaft interlocking plate is arranged on the main shaft crank arm through a guide screw and moves along the waist hole.
Preferably, a closing rotating shaft limiting screw is arranged on the limiting bent plate, a component is arranged on the closing rotating shaft, and the closing rotating shaft limiting screw is matched with the component.
Preferably, the propelling mechanism is also provided with a travel switch.
Preferably, the connecting rod passes through a chassis cross plate of the chassis.
The utility model provides a safe and reliable misoperation prevention structure with simple structure, which improves the safety performance of a circuit breaker and simultaneously promotes the upgrading of products by using a novel propulsion mechanism; the complex interlocking structure is effectively removed, the requirement on high consistency of parts is reduced, fault tolerance is improved, and the reliability of products is ensured; meanwhile, the structure is matched with simple electrical and mechanical control, and the existing misoperation preventing structure is greatly optimized.
Drawings
FIG. 1 is a schematic perspective view of an anti-misoperation mechanism according to the present utility model;
FIG. 2 is a schematic view of the motion of the protective small door of the propulsion mechanism according to the present utility model;
FIG. 3 is a schematic diagram showing a perspective structure of the anti-misoperation structure;
FIG. 4 is a schematic side view of a perspective structure of the anti-misoperation structure according to the present utility model;
FIG. 5 is a schematic diagram illustrating the movement of the anti-misoperation structure according to the present utility model;
fig. 6 is a schematic diagram of a closing motion of the circuit breaker according to the present utility model;
wherein: 1. the device comprises a propelling mechanism, 1-1 part of a small protective door, 1-2 parts of a transmission crank arm, 1-3 parts of a interlocking plate, 1-3-1 parts of an interlocking plate position when the small protective door is closed, 1-3-2 parts of an interlocking plate position when the small protective door is fully opened, 1-4 parts of a guide rod, 1-5 parts of a propelling mechanism screw, 2 parts of a travel switch, 3 parts of a closing rotating shaft, 4 parts of a machine case, 4-3 parts of a transverse plate of the machine case, 5 parts of a supporting plate, 6 parts of a limiting bent plate, 6-1 parts of a limiting bent plate position when the small protective door is fully closed, 6-2 parts of a limiting bent plate position when the small protective door is fully opened, 7 parts of a connecting rod, 8 parts of a connecting plate, 9 parts of a closing rotating shaft limiting screw, 10 parts of a guiding screw, 11, a main shaft interlocking plate, 12, a main shaft interlocking plate fixing screw, 13, a main shaft crank arm, 14, a guide screw, 15, a main shaft, 16, a guide screw, 17, a small protective door 1-1 movement direction, 18, a transmission crank arm 1-2 movement direction, 19, an interlocking plate 1-3 movement direction, 20, an interlocking plate 1-3 movement direction vertical direction decomposition, 21, an interlocking plate 1-3 movement direction horizontal direction decomposition, 22, a limiting bent plate 6 movement direction, 23, a main shaft 15 from a brake opening to a brake opening movement direction, 24, a main shaft interlocking plate 11 movement direction, 22 and a brake opening and brake rotating shaft 3 movement direction when a breaker is from a brake opening to a brake opening.
Detailed Description
The following describes the embodiments of the present utility model in detail with reference to the accompanying drawings.
As shown in fig. 1-4, the circuit breaker misoperation preventing structure is arranged on a circuit breaker case 4 and comprises a propulsion mechanism 1, a connecting rod 7, a connecting plate 8 and a limiting bending plate 6.
The circuit breaker is characterized in that a protective small door 1-1, a transmission arm 1-2, a interlocking plate 1-3, a guide rod 1-4 and a propulsion mechanism screw rod 1-5 are arranged on the propulsion mechanism 1, and when the propulsion mechanism screw rod 1-5 rotates, the circuit breaker swings in or out; the small protective door 1-1 is connected to the guide rod 1-4 through the transmission arm 1-2, the interlocking plate 1-3 is welded on the guide rod 1-4, when the small protective door 1-1 is pressed down to be opened (see the movement direction 17), the transmission crank arm 1-2 rotates clockwise (see the movement direction 18), the guide rod 1-4 is connected with the transmission crank arm 1-2 to realize synchronous rotation, and at the moment, the interlocking plate 1-3 rotates clockwise (see the movement direction 19).
One end of the connecting rod 7 is connected to the interlocking plates 1-3 through the connecting plate 8, and the other end is connected with the limiting bending plate 6; the connecting plate 8 is provided with a waist hole in the horizontal direction, the interlocking plate 1-3 is provided with a screw hole, and the guide screw 16 passes through the waist hole of the connecting plate 8 and the screw hole of the interlocking plate 1-3. When the interlocking plate 1-3 rotates clockwise (see movement direction 19), the guide screw 16 moves in the waist hole of the interlocking plate 8, so that the interlocking plate 8 drives the connecting rod 7 to move, and at this time, the clockwise rotation of the interlocking plate 1-3 is converted into a vertical direction (see movement direction 20) and a horizontal direction (see movement direction 21), namely, the downward movement (movement direction 20) of the interlocking plate 8 and the sliding (movement direction 21) of the guide screw 16 in the waist hole of the interlocking plate 8. The connecting rod 7 passes through the case cross plate 4-3 of the case 4 to increase the movement stability.
The limiting bending plate 6 is connected to the case 4 through a supporting plate 5, the supporting plate 5 is fixed on the case 4, and a waist hole is formed in the front end of the supporting plate; the limiting bending plate 6 is provided with a guide screw 10, the guide screw 10 slides up and down in a waist hole formed in the supporting plate 5 so as to ensure the vertical direction movement guide of the limiting bending plate 6, and the vertical direction movement of the connecting rod 7 enables the limiting bending plate 6 to move from the 6-1 position to the 6-2 position.
As shown in fig. 5-6, the circuit breaker case is provided with a closing rotating shaft structure, the closing rotating shaft structure comprises a main shaft 15, a main shaft crank arm 13, a main shaft interlocking plate 11 and a closing rotating shaft 3, the main shaft crank arm 13 is installed on the main shaft 15, a waist hole is formed in the main shaft crank arm 13, and the main shaft interlocking plate 11 is installed on the main shaft crank arm 13 through a guide screw 14 and moves along the waist hole. When the breaker is changed from a breaking state to a closing state, the main shaft 15 rotates clockwise (see a movement direction 23), the main shaft crank arm 13 is arranged on the main shaft 15 to rotate clockwise synchronously, and at the moment, the guide screw 14 fixed on the main shaft interlocking plate 11 moves along a waist hole of the main shaft crank arm 13, so that the main shaft interlocking plate 11 is driven by the main shaft crank arm 13 to lift upwards; the movement process of the switching-on state to the switching-off state is opposite to the switching-on state. I.e. the breaker is in a closing state, and the main shaft interlocking plate 11 is lifted; in the breaker open state, the main shaft interlocking plate 11 falls down.
The limiting bending plate 6 is provided with a closing rotating shaft limiting screw 9, when the protective small door 1-1 is opened, the operating handle allows insertion, and the screw rod 1-5 of the propulsion mechanism can be rotated, so that manual shaking-in or shaking-out of the circuit breaker is realized; at this time, the protective small door 1-1 is pressed down to be opened (see a movement direction 17), and the transmission crank arm 1-2 is rotated clockwise (see a movement direction 18), so that the interlocking plate 1-3 is rotated clockwise (see a movement direction 19); the limiting bending plate 6 moves from the 6-1 position to the 6-2 position under the action of the connecting rod 7, and at the moment, the closing rotating shaft limiting screw 9 on the limiting bending plate 6 moves from the 9-1 position to the 9-2 position.
The switching-on rotating shaft 3 is provided with a component 3-1, when the circuit breaker is switched from a switching-off state to a switching-on state, the main shaft 15 rotates clockwise (see a moving direction 23), the main shaft crank arm 13 rotates clockwise synchronously, and the main shaft interlocking plate 11 is driven by the main shaft crank arm 13 to lift upwards. At this time, the upper part 3-1 of the closing rotating shaft 3 is propped against the closing rotating shaft limiting screw 9 upwards, so that the closing rotating shaft limiting screw 9 is arranged at the 9-1 position, the limiting bending plate 6 is arranged at the 6-1 position, and the limiting bending plate 6 cannot move downwards. At this time, the protective small door is completely closed, and the operating handle is not allowed to be inserted, so that the circuit breaker cannot be operated to swing in and out at this time. Conversely, the protective small door is opened, the operating handle can be inserted to enable the circuit breaker to swing in and out, the limiting bent plate 6 is located at the 6-2 position, the closing rotating shaft limiting screw 9 on the limiting bent plate 6 is located at the 9-2 position, the closing rotating shaft 3 part 3-1 is just propped against, the closing rotating shaft 3 cannot rotate inwards (the moving direction 25), and closing of the circuit breaker cannot be completed.
The propelling mechanism 1 is also provided with a travel switch 2, when the protective small door 1-1 is opened, the interlocking plate 1-3 is positioned at the position 1-3-2 of the interlocking plate when the protective small door is completely opened, the travel switch 2 is pressed down, at the moment, a normally open point of the travel switch is connected to a loop, a closing loop is not conducted, and the operation of closing is not allowed; when the protective small door 1-1 is closed, the interlocking plate 1-3 is positioned at the position 1-3-1 of the interlocking plate when the protective small door is closed, the travel switch 2 is opened, at the moment, the normally closed point of the travel switch is connected to the loop, and the closing loop is conducted, so that the operation closing is allowed. The electric or manual switching-on can be adopted according to the actual use requirement; meanwhile, the circuit breaker only allows to swing in and out in the opening state.
The circuit breaker misoperation prevention structure uses a novel propulsion mechanism provided with a small protection door, and the traditional complex interlocking structure is removed during the anti-riot operation; the travel switch is connected into a closing loop to realize misoperation prevention of an electrical layer; through the motion of spacing bent plate along with the protection dodge gate, the mechanical limit is closed a floodgate pivot, and the maloperation is prevented at the mechanical level.
The above description is only illustrative of the preferred embodiments of the present utility model and the technical principles applied, and it should be understood by those skilled in the art that the scope of the utility model is not limited to the specific combination of the above technical features, but also encompasses other technical solutions formed by any combination of the above technical features or their equivalents without departing from the inventive concept.
Claims (7)
1. The misoperation prevention structure of the circuit breaker is arranged on a case of the circuit breaker and is characterized by comprising a pushing mechanism, a connecting rod, a connecting plate, a limiting bent plate and a closing rotating shaft structure, wherein a small protection door, a transmission arm, a interlocking plate, a guide rod and a guide rod of the pushing mechanism are arranged on the pushing mechanism, the small protection door is connected to the guide rod through the transmission arm, and the interlocking plate is welded on the guide rod; one end of the connecting rod is connected to the interlocking plate through the connecting plate, and the other end of the connecting rod is connected with the limiting bent plate; the switching-on rotating shaft structure comprises a main shaft, a main shaft crank arm, a main shaft interlocking plate and a switching-on rotating shaft, wherein the main shaft crank arm is arranged on the main shaft, and the main shaft interlocking plate is arranged on the main shaft crank arm.
2. The circuit breaker misoperation prevention structure of claim 1 wherein the link plate is provided with a horizontal waist hole, the link plate is provided with screw holes, and guide screws are passed through the link plate waist hole and the link plate screw holes.
3. The circuit breaker misoperation prevention structure of claim 1 wherein the limit bending plate is connected to the chassis through a support plate, the support plate is fixed to the chassis, and a waist hole is provided at the front end; and the limiting bending plate is provided with a guide screw which slides up and down in a waist hole arranged on the supporting plate.
4. The circuit breaker misoperation prevention structure of claim 1 wherein the main shaft crank arm is mounted on the main shaft, a waist hole is provided on the main shaft crank arm, and the main shaft interlocking plate is mounted on the main shaft crank arm through a guide screw and moves along the waist hole.
5. The circuit breaker misoperation prevention structure of claim 1 wherein the limiting bending plate is provided with a closing rotating shaft limiting screw, the closing rotating shaft is provided with a component, and the closing rotating shaft limiting screw is matched with the component.
6. The circuit breaker misoperation prevention structure of any one of claims 1 to 5 wherein a travel switch is also provided on the propulsion mechanism.
7. The circuit breaker anti-misoperation structure of claim 6 wherein the connecting rod passes through a chassis cross plate of the chassis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320801076.9U CN219936930U (en) | 2023-04-12 | 2023-04-12 | Circuit breaker misoperation prevention structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320801076.9U CN219936930U (en) | 2023-04-12 | 2023-04-12 | Circuit breaker misoperation prevention structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219936930U true CN219936930U (en) | 2023-10-31 |
Family
ID=88502646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320801076.9U Active CN219936930U (en) | 2023-04-12 | 2023-04-12 | Circuit breaker misoperation prevention structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219936930U (en) |
-
2023
- 2023-04-12 CN CN202320801076.9U patent/CN219936930U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107359534B (en) | Valve interlocking device special for SF6 circuit breaker | |
| CN201307531Y (en) | Five-prevention blocking device of switchgear | |
| CN219936930U (en) | Circuit breaker misoperation prevention structure | |
| CN108461332A (en) | Breaker and disconnecting switch, the interlocking mechanism of earthing switch | |
| CN113327792A (en) | Three-station switch mechanism and cable chamber door interlocking device for environment-friendly inflating cabinet | |
| CN208656280U (en) | A kind of minitype high voltage cabinet valve mechanism | |
| CN109244920B (en) | Mechanical interlocking device for switch cabinet vacuum circuit breaker handcart | |
| CN105336524B (en) | The mechanical chain mechanism of dual power supply breaker cabinet power supply | |
| CN109509652B (en) | Circuit breaker-three-position switch device and circuit breaker and three-position switch interlocking device | |
| CN108521096B (en) | Interlocking device and electrical system | |
| CN215220627U (en) | Locking system of switch operating mechanism | |
| CN202008948U (en) | Operation mechanism of combined electrical appliance cabinet for SF6 load switch fuse protector | |
| CN214848453U (en) | Operating mechanism of switch | |
| CN208521848U (en) | A kind of breaker | |
| CN108695757B (en) | Valve mechanism of small-sized high-voltage cabinet | |
| CN208521883U (en) | It is a kind of with prevent repeat close a floodgate interlocking breaker operation mechanism | |
| CN201191713Y (en) | Shutter apparatus for mounting circuit breaker | |
| CN102891046A (en) | Circuit breaker interlocking device | |
| CN217507138U (en) | Interlocking mechanism of earthing switch in switch cabinet | |
| CN208385261U (en) | The pad lock structure of motor-operating mechanism | |
| CN206179811U (en) | Novel indoor high -voltage vacuum circuit breaker's interlocking device | |
| CN103515158B (en) | 10kv high-voltage elastic switch | |
| CN102208767B (en) | State snap close apparatus of draw-out type switch electric appliance | |
| CN203491585U (en) | Propelling apparatus with operating hole status switch | |
| CN216719855U (en) | Opening device of circuit breaker and switch equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |