CN110071452B - Low-voltage draw-out circuit breaker - Google Patents
Low-voltage draw-out circuit breaker Download PDFInfo
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- CN110071452B CN110071452B CN201910437111.1A CN201910437111A CN110071452B CN 110071452 B CN110071452 B CN 110071452B CN 201910437111 A CN201910437111 A CN 201910437111A CN 110071452 B CN110071452 B CN 110071452B
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- 230000000149 penetrating effect Effects 0.000 claims description 6
- 238000005452 bending Methods 0.000 claims description 3
- 238000005192 partition Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 238000009434 installation Methods 0.000 description 4
- 239000012212 insulator Substances 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
Classifications
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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
- H02B11/00—Switchgear having carriage withdrawable for isolation
- H02B11/12—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal
- H02B11/127—Withdrawal mechanism
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- Power Engineering (AREA)
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Abstract
A low-voltage draw-out circuit breaker belongs to the technical field of circuit breakers and particularly relates to a low-voltage draw-out circuit breaker. The invention provides a low-voltage draw-out circuit breaker with good safety protection performance. The circuit breaker comprises a connecting seat and a circuit breaker body, and is structurally characterized in that a vertical support plate extending forwards is arranged in the middle of the height direction of two sides of the connecting seat, a transverse circuit breaker guide groove is formed in the front end of the vertical support plate, guide posts extending towards two sides are arranged on two sides of the circuit breaker body corresponding to the circuit breaker guide groove, the outer ends of the guide posts are columnar end heads, and the diameter of the columnar end heads is larger than that of the guide posts; when the guide post enters the guide groove of the circuit breaker, the columnar end head is arranged on the outer side of the vertical support plate.
Description
Technical Field
The invention belongs to the technical field of circuit breakers, and particularly relates to a low-voltage draw-out circuit breaker.
Background
Draw-out circuit breakers have been widely used, but the safety protection performance of the existing draw-out circuit breakers has yet to be further improved.
Disclosure of Invention
The invention aims at the problems and provides the low-voltage draw-out circuit breaker with good safety protection performance.
In order to achieve the purpose, the circuit breaker comprises a connecting seat and a circuit breaker body, wherein the middle part of the height direction of two sides of the connecting seat is provided with a vertical support plate extending forwards, the front end of the vertical support plate is provided with a transverse circuit breaker guide slot, two sides of the circuit breaker body are provided with guide posts extending towards two sides corresponding to the circuit breaker guide slot, the outer ends of the guide posts are columnar ends, and the diameter of the columnar ends is larger than that of the guide posts; when the guide post enters the guide groove of the circuit breaker, the columnar end head is arranged at the outer side of the vertical support plate;
the circuit breaker body is provided with a guide slot baffle plate which can move up and down, a switch wrench of the circuit breaker body can drive the guide slot baffle plate to move up and down, and when the guide slot baffle plate reaches an upper limit position, the front port of the guide slot of the circuit breaker is shielded;
The front end of the vertical support plate below the guide groove of the circuit breaker is provided with a guide groove baffle plate entering groove when the guide groove baffle plate is at the lower limit position, the inner end of the guide groove baffle plate entering groove is provided with a guide groove baffle plate vertical upward moving groove, and the height of the vertical upward moving groove corresponds to the height of the guide groove baffle plate reaching the upper limit position.
As a preferable scheme, the outer side of the vertical support plate is provided with a travel switch contact pinch roller, and the travel switch contact pinch roller is arranged on an upward moving path of a guide groove baffle plate at the outer side of the vertical upward moving groove.
As another preferable scheme, the front end of the breaker body is provided with a front vertical plate, both sides of the front end of the front vertical plate are provided with pushing handles, the middle part of the front vertical plate is provided with a vertical rectangular opening, the rear end of the front vertical plate is provided with a pushing baffle, the middle part of the pushing baffle is provided with a lower baffle edge matched with the upper end face of a switch wrench of the breaker body, and the front end of the switch wrench of the breaker body penetrates out of the rectangular opening; the guide groove baffles are arranged on two sides of the pushing baffle; the pushing baffle is provided with a vertical strip-shaped hole, the front vertical plate is provided with a guide shaft, and the guide shaft penetrates through the vertical strip-shaped hole; the guide posts are arranged in the middle of two ends of the front vertical plate, and the guide slot baffle plate is arranged at the rear of the guide posts.
As another preferable scheme, the upper end and the lower end of the front vertical plate are connected with the breaker body through bolts.
As another preferable scheme, the guide groove baffle plate is protruded backward and then bent outward.
As another preferable scheme, the number of the vertical strip-shaped holes is four, and two pushing baffles are symmetrically arranged on each side.
As another preferable scheme, the part of the guide shaft penetrating out of the vertical strip-shaped hole is provided with external threads and sleeved with a gasket, and a nut is screwed on the guide shaft at the outer end of the gasket.
As another preferable scheme, the pushing baffle plate consists of a left part and a right part, the lower end of the middle part of the pushing baffle plate is provided with a groove, and the bottom edge of the groove is the lower baffle edge.
As another preferable scheme, the rear upper end and the lower end of the connecting seat are provided with wiring connecting plates.
As another preferable scheme, the rear upper end and the lower end of the connecting seat are provided with fixed contact seats, the fixed contact seats are provided with elastic contacts, and the front ends of connecting bolts penetrate through holes at the lower ends of the wiring connecting plates and are screwed into threaded holes of the elastic contacts.
As another preferable scheme, the fixed contact seat is cast in the connecting seat, and the elastic contact is inserted into a hole of the fixed contact seat.
As another preferable scheme, the rear end of the vertical support plate is connected with the connecting seat through a fastener, and the front part of the vertical support plate is connected with the travel switch base through a fastener.
As another preferable scheme, the T-shaped groove is formed in the connecting seat, the connecting bolt is arranged in the T-shaped groove, the head end of the connecting bolt is arranged at the big head end of the T-shape, the front end of the connecting bolt penetrates out of the small head end of the T-shape and penetrates through the through hole at the rear end of the vertical support plate, and the connecting bolt at the outer side of the vertical support plate is screwed with the fastening nut.
As another preferable scheme, the rear upper end and the lower end of the breaker body are provided with fixed contacts and guide shafts which extend backwards.
As another preferable scheme, the breaker body is provided with a T-shaped groove, a connecting bolt is arranged in the T-shaped groove, the head end of the connecting bolt is arranged at the big head end of the T-shape, and the front end of the connecting bolt penetrates out of the small head end of the T-shape and is screwed into a central threaded hole of the fixed contact; the guide shaft is disposed laterally below the fixed contact.
As another preferable scheme, the periphery of the rear part of the guide shaft is provided with a limiting boss extending outwards, the front end face of the limiting boss is propped against the rear end face of the breaker body, and the front end of the guide shaft sequentially penetrates through the breaker body and the connecting hole at the upper end of the front vertical plate and is screwed with a nut.
As another preferable scheme, the upper and lower parts of the connecting seat are provided with shaft holes corresponding to the guide shafts, the fixed contact seat is correspondingly inserted with the fixed contact, and the fixed contact is abutted against the elastic contact after being inserted into the fixed contact seat.
As another preferable scheme, the upper end and the lower end of the breaker body are provided with rectangular grooves with front ends open along the front-back direction, and the rear side wall of each rectangular groove is the installation position of a fixed contact; the front lower end of the partition wall between the connected rectangular grooves is the penetrating point of the guide shaft.
As another preferable scheme, the rear end of the vertical support plate is bent outwards and then bent backwards, and the backward bending part is the connecting part of the vertical support plate and the connecting seat.
Secondly, the two sides of the middle part of the upper end and the lower end of the front vertical plate are provided with connecting plates extending upwards, connecting holes are formed in the connecting plates, and nuts are screwed after the guide shafts penetrate through the connecting holes.
In addition, the periphery of the front vertical plate is bent backwards, the connecting plate is arranged at the rear end of the backward bent edge, and the guide post is arranged on the backward bent edge.
The invention has the beneficial effects that.
When the breaker body is not connected with the connecting seat, if the switch wrench of the breaker body is placed at an upward pulling position, and if the breaker body is connected with the connecting seat, the guide slot baffle can block the guide slot of the breaker, the guide post cannot enter the guide slot of the breaker, and the breaker body cannot be connected with the connecting seat; when the breaker is prevented from being switched on, the breaker body is connected with the connecting seat.
When the switch wrench of the circuit breaker body is downwards pulled, the circuit breaker is opened, the guide groove baffle plate moves downwards along with the switch wrench, the guide groove baffle plate does not block the front port of the guide groove of the circuit breaker, the circuit breaker body is pushed forwards at the moment, the guide pillar can only enter the guide groove of the circuit breaker, and the guide groove baffle plate enters the guide groove baffle plate entering groove.
When the guide slot baffle arrives at the position of the vertical upward moving slot of the guide slot baffle, the circuit breaker can be switched on (namely, the circuit breaker can be switched on after the circuit breaker is switched off and inserted in place), namely, the switch wrench is upwards dialed, the guide slot baffle moves upwards in the vertical upward moving slot of the guide slot baffle along with the switch wrench, at the moment, the guide slot baffle moves upwards into the vertical upward moving slot of the guide slot baffle from the entering slot of the guide slot baffle, the vertical upward moving slot of the guide slot baffle limits the front-back movement of the guide slot baffle, and if the switch wrench of the circuit breaker body is not dialed down at the moment, the circuit breaker body cannot be separated from the connecting seat, so that the circuit breaker body is prevented from being separated from the connecting seat when the circuit breaker is switched on.
Therefore, the invention can prevent the breaker from closing and pushing and prevent the breaker from pulling out with load.
Drawings
The invention is further described below with reference to the drawings and the detailed description. The scope of the present invention is not limited to the following description.
Fig. 1 is a schematic view of a circuit breaker body structure of the present invention.
Fig. 2 is a schematic drawing showing the structure of the switch spanner of the breaker body of the present invention.
Fig. 3 is a schematic view of the structure of the connector of the present invention.
Fig. 4 is a front view of the connecting seat of the present invention.
Fig. 5 is a side view of the connector of the present invention.
Fig. 6 is a top cross-sectional view of the connecting seat of the present invention.
Fig. 7 is a schematic view of the structure of the riser before the circuit breaker body is connected.
Fig. 8 is a schematic diagram showing the structure of the pulling-up of the riser switch wrench before the connection of the breaker body of the invention.
Fig. 9 is a schematic view of the related connection structure of the pushing baffle plate of the present invention.
Fig. 10 is a schematic drawing showing the pulling down of the switch wrench of the related connecting structure of the pushing baffle of the present invention.
Fig. 11 is a schematic structural diagram of the connection base and the breaker body of the present invention after being assembled.
Fig. 12 is a schematic drawing showing the structure of the switch wrench after the connection base and the breaker body are assembled.
Fig. 13 is a sectional view of the connection base and the circuit breaker body of the present invention assembled.
Fig. 14 is a schematic view of the related connection structure of the guide shaft of the present invention.
FIG. 15 is a schematic view of the present invention showing the channel stop entering the channel stop vertically moving up the channel to an upper limit.
FIG. 16 is a schematic view of the present invention showing the channel stop entering the channel stop moving vertically up the channel to a lower limit.
Fig. 17 is a schematic view of the related connection structure of the pushing baffle plate of the present invention.
Fig. 18 is a top view of the circuit breaker body of the present invention.
Fig. 19 is a side view of the circuit breaker body of the present invention.
Fig. 20 is a cross-sectional view of the position of a fixed contact of the present invention.
Fig. 21 is a cross-sectional view of the connection location of a fixed contact and a fixed contact holder of the present invention.
Fig. 22 is a schematic view of the relevant parts of the wiring connection board of the present invention.
Fig. 23 is a cross-sectional view of a connection structure of a vertical support plate and a connection seat according to the present invention.
Fig. 24 is a schematic view of the structure of the fixed contact base of the present invention.
Fig. 25 is a schematic view of the spring contact structure of the present invention.
Fig. 26 is a cross-sectional view of a spring contact of the present invention.
Fig. 27 is a top view of the outdoor distribution box of the present invention.
Fig. 28 is a side view of an outdoor distribution box of the present invention.
Fig. 29 is a schematic view of the bus bar connection portion of the outdoor distribution box of the present invention.
Fig. 30 is a perspective view of the outdoor distribution box of the present invention.
Fig. 31 is a schematic view of the connection structure of the outdoor distribution box drawout breaker mounting plate of the present invention.
Fig. 32 is a schematic circuit diagram of an outdoor distribution box of the present invention.
Fig. 33 is a schematic view of the outdoor distribution box structure of the present invention.
In the drawing the view of the figure, the switch spanner is 1, the breaker body is 2, 3 guide shaft perforation, 4 rectangular grooves, 5 travel switch bases, 6 travel switch contact pinch rollers, 7 guide slot baffle vertical upward movement grooves, 8 guide slot baffle entering guide slots, 9 breaker guide slots, 10 vertical support plates, 11 nuts, 12 connecting seats, 13 shaft holes, 14 guide posts, 15 handles, 16 guide shafts, 17 front vertical plates, 18 connecting plates, 19 lower flanges, 20 bar-shaped holes, 21 pushing baffles, 22 guide shafts, 23 guide slot baffles, 24 limit-limiting bosses, 25 fixed contacts, 26 connecting bolts, 27 connecting bolts, 28 fixed contact bases, 29 elastic contacts, 30 connecting bolts the power supply device comprises a wiring connection plate 31, an outdoor box 32, a hanging frame 33, a right vertical bus 34, an upper transverse bus 35, a left vertical bus 36, a current transformer 37, a load switch 38, a vertical connection plate 39, a connection hole 40, a right angle side 41, a breaker mounting beam 42, an insulator mounting beam 43, a reactive compensation capacitor 44, a reactive compensation capacitor reactive compensation composite switch 45, a reactive compensation grouping incoming circuit breaker 46, a reactive compensation incoming circuit breaker 47, a lightning arrester 48, a reactive compensation controller 49, an air outlet 50, a grounding row connection plate 51, an L-shaped grounding row connection plate 52 and a draw-out circuit breaker mounting plate 53.
Detailed Description
As shown in the figure, the circuit breaker comprises a connecting seat and a circuit breaker body, wherein the middle parts of the two sides of the connecting seat in the height direction are provided with vertical support plates extending forwards, the front ends of the vertical support plates are provided with transverse circuit breaker guide grooves, the two sides of the circuit breaker body are provided with guide posts extending towards the two sides corresponding to the circuit breaker guide grooves, the outer ends of the guide posts are columnar ends, and the diameters of the columnar ends are larger than those of the guide posts; when the guide post enters the guide groove of the circuit breaker, the columnar end head is arranged at the outer side of the vertical support plate;
the circuit breaker body is provided with a guide slot baffle plate which can move up and down, a switch wrench of the circuit breaker body can drive the guide slot baffle plate to move up and down, and when the guide slot baffle plate reaches an upper limit position, the front port of the guide slot of the circuit breaker is shielded;
The front end of the vertical support plate below the guide groove of the circuit breaker is provided with a guide groove baffle plate entering groove when the guide groove baffle plate is at the lower limit position, the inner end of the guide groove baffle plate entering groove is provided with a guide groove baffle plate vertical upward moving groove, and the height of the vertical upward moving groove corresponds to the height of the guide groove baffle plate reaching the upper limit position.
And a travel switch contact pinch roller is arranged on the outer side of the vertical support plate, and the travel switch contact pinch roller is arranged on an upward moving path of the baffle on the outer side of the vertical upward moving groove.
When the breaker body is not connected with the connecting seat, if the switch wrench of the breaker body is placed at an upward pulling position, and if the breaker body is connected with the connecting seat, the guide slot baffle can block the guide slot of the breaker, the guide post cannot enter the guide slot of the breaker, and the breaker body cannot be connected with the connecting seat; when the breaker is prevented from being closed, the breaker body is connected with the connecting seat.
When the switch wrench of the circuit breaker body is downwards pulled, the circuit breaker is opened, the guide groove baffle plate moves downwards along with the switch wrench, the guide groove baffle plate does not block the front port of the guide groove of the circuit breaker, the circuit breaker body is pushed forwards at the moment, the guide pillar can only enter the guide groove of the circuit breaker, and the guide groove baffle plate enters the guide groove baffle plate entering groove.
When the guide slot baffle arrives at the position of the vertical upward moving slot of the guide slot baffle (the position of the vertical upward moving slot of the guide slot baffle corresponds to the plugging position of the circuit breaker body and the connecting seat), the circuit breaker can be switched on, namely the switch spanner is upwards dialed, the guide slot baffle moves upwards in the vertical upward moving slot of the guide slot baffle along with the switch spanner, the guide slot baffle moves upwards in the process of propping against the contact pinch roller of the travel switch, and the contact pinch roller of the travel switch moves backwards to send a switching-on signal of the circuit breaker.
The front end of the breaker body is provided with a front vertical plate, both sides of the front end of the front vertical plate are provided with propelling handles, the middle part of the front vertical plate is provided with a vertical rectangular opening, the rear end of the front vertical plate is provided with a propelling baffle, the middle part of the propelling baffle is provided with a lower baffle edge matched with the upper end face of the switch handle of the breaker body, and the front end of the switch handle of the breaker body penetrates out of the rectangular opening; the guide groove baffles are arranged on two sides of the pushing baffle; the pushing baffle is provided with a vertical strip-shaped hole, the front vertical plate is provided with a guide shaft, and the guide shaft penetrates through the vertical strip-shaped hole; the guide posts are arranged in the middle of two ends of the front vertical plate, and the guide slot baffle plate is arranged at the rear of the guide posts.
The upper end and the lower end of the front vertical plate are connected with the breaker body through bolts.
The guide groove baffle plate is protruded backward and then bent outward.
The number of the vertical strip-shaped holes is four, and two pushing baffles are symmetrically arranged on each side.
The part of the guide shaft penetrating out of the vertical strip-shaped hole is provided with external threads and sleeved with a gasket, and a nut is screwed on the guide shaft at the outer end of the gasket.
The pushing baffle consists of a left part and a right part, a groove is formed in the lower end of the middle part of the pushing baffle, and the bottom edge of the groove is the lower flange.
The upper and lower ends behind the connecting seat are provided with wiring connecting plates.
The upper and lower ends behind the connecting seat are provided with fixed contact seats, the fixed contact seats are provided with elastic contacts, and the front ends of connecting bolts penetrate through holes at the lower ends of the wiring connecting plates and are screwed into threaded holes of the elastic contacts. The elastic contact is adopted, so that the contact performance is better.
The fixed contact seat is cast in the connecting seat, and the elastic contact is inserted into the hole of the fixed contact seat.
The rear end of the vertical support plate is connected with the connecting seat through a fastener, and the front part of the vertical support plate is connected with the travel switch base through a fastener.
The connecting seat is provided with a T-shaped groove, a connecting bolt is arranged in the T-shaped groove, the head end of the connecting bolt is arranged at the big head end of the T-shape, the front end of the connecting bolt penetrates out of the small head end of the T-shape and penetrates through the through hole at the rear end of the vertical support plate, and a fastening nut is screwed on the connecting bolt at the outer side of the vertical support plate.
The upper and lower ends behind the breaker body are provided with fixed contacts and guide shafts which extend backwards. And a guide shaft is arranged, so that the circuit breaker body is convenient to align and connect with the connecting seat.
The circuit breaker is characterized in that a T-shaped groove is formed in the circuit breaker body, a connecting bolt is arranged in the T-shaped groove, the head end of the connecting bolt is arranged at the big head end of the T-shape, and the front end of the connecting bolt penetrates out of the small head end of the T-shape and is screwed into a central threaded hole of the fixed contact; the guide shaft is disposed laterally below the fixed contact.
The periphery at the rear part of the guide shaft is provided with a limiting boss extending outwards, the front end face of the limiting boss is propped against the rear end face of the breaker body, and the front end of the guide shaft sequentially penetrates through the breaker body, the connecting hole at the upper end of the front vertical plate and is screwed with a nut.
The upper and lower parts of the connecting seat are provided with shaft holes corresponding to the guide shafts, the fixed contact seat is correspondingly inserted with the fixed contact, and the fixed contact is abutted against the elastic contact after being inserted into the fixed contact seat.
The upper end and the lower end of the breaker body are provided with rectangular grooves with front ends open along the front-back direction, and the rear side wall of each rectangular groove is the mounting position of a fixed contact; the front lower end of the partition wall between the connected rectangular grooves is the penetrating point of the guide shaft.
The rear end of the vertical support plate is bent outwards and then bent backwards, and the backward bending part is the connecting part of the vertical support plate and the connecting seat.
The two sides of the middle part of the upper end and the lower end of the front vertical plate are provided with connecting plates extending upwards, connecting holes are formed in the connecting plates, and the guide shafts penetrate through the connecting holes and then are screwed with nuts.
The periphery of the front vertical plate is bent backwards, the connecting plate is arranged at the rear end of the backward bent edge, and the guide post is arranged on the backward bent edge.
The low-voltage draw-out breaker can be applied to an outdoor distribution box, the outdoor distribution box comprises an outdoor box body, a load switch is arranged at the left lower part in the outdoor box body, a current transformer is arranged above the load switch, and a draw-out breaker is arranged at the right of the current transformer; the output end of the load switch is connected with the input end of the draw-out type breaker (namely, the wiring connecting plate 31 of the low-voltage draw-out type breaker) through a current transformer and a bus.
The outdoor distribution box is provided with the left vertical bus, the upper transverse bus and the right vertical bus, so that the connection between the components is convenient, and the connection is reliable. The bus comprises a left vertical bus, an upper transverse bus and a right vertical bus, the lower end of the left vertical bus is connected with the output end of the load switch, the upper end of the left vertical bus is connected with the left end of the upper transverse bus, the right side of the upper transverse bus is connected with the upper end of the right vertical bus, and the lower end of the right vertical bus is connected with the input end of the breaker body; the upper end of the right vertical bus is bent forwards to form a right-angle side, the front part of the right-angle side is provided with a connecting hole, and the upper transverse bus is provided with a mounting hole corresponding to the connecting hole;
the lower end of the right vertical bus is bent forwards and downwards and then bent downwards to form a vertical connecting plate, and a mounting hole is formed in the vertical connecting plate corresponding to a connecting hole in a wiring connecting plate on a connecting seat of the draw-out circuit breaker. The rear end of the left vertical bus is provided with a transverse insulator mounting beam, two ends of the insulator mounting beam are connected with an outdoor box body inner body mounting plate, and the front end of the insulator mounting beam is connected with the left vertical bus. The load switch rear outdoor box body lower extreme is provided with reactive compensation condenser, and reactive compensation condenser rear lower side is provided with reactive compensation compound switch, and reactive compensation compound switch top is provided with reactive compensation grouping inlet wire circuit breaker, and reactive compensation grouping inlet wire circuit breaker's top is provided with reactive compensation inlet wire circuit breaker, and reactive compensation inlet wire circuit breaker's input links to each other with the generating line, and reactive compensation inlet wire circuit breaker's output loops through reactive compensation grouping inlet wire circuit breaker, reactive compensation compound switch and reactive compensation condenser link to each other. And a lightning arrester is arranged behind the left vertical bus and is connected with the output end of the reactive compensation incoming line breaker. And a reactive compensation controller is arranged on the right side of the lightning arrester. The upper transverse bus is provided with a reactive compensation incoming cable connecting hole; one end of the incoming cable is connected with the reactive compensation incoming cable connecting hole, and the other end of the incoming cable is connected with the input end of the reactive compensation incoming circuit breaker. And air outlets are arranged at the lower ends of two sides of the outdoor box body. The lower extreme is provided with horizontal ground connection row connecting plate in the outdoor box, and the ground connection row connecting plate front end is connected with outdoor box bottom plate through L shape ground connection row connecting plate. The draw-out breaker is arranged in the outdoor box body through a draw-out breaker mounting plate. Two connecting holes are vertically arranged on two sides of the drawout breaker mounting plate, the connecting seat is arranged on the drawout breaker mounting plate, vertical breaker mounting beams are arranged at the rear ends of two sides of the drawout breaker mounting plate, and a plurality of mounting holes are vertically and uniformly distributed on the front end face of each breaker mounting beam corresponding to the connecting holes. Through mounting panel and installation roof beam installation connecting seat, the installation and the adjustment of position of circuit breaker of being convenient for. And a hanging frame is arranged at the upper end of the outdoor box body. The hanging frame is a U-shaped frame, and two sides of the lower end of the U-shaped frame are connected with the upper end of the outdoor box body through fasteners. The four hanging frames are respectively arranged at four corners of the upper end of the outdoor box body.
Claims (1)
1. The low-voltage draw-out type circuit breaker comprises a connecting seat and a circuit breaker body, and is characterized in that a vertical support plate extending forwards is arranged in the middle of the height direction of two sides of the connecting seat, a transverse circuit breaker guide groove is formed in the front end of the vertical support plate, guide posts extending towards two sides are arranged on two sides of the circuit breaker body corresponding to the circuit breaker guide groove, the outer ends of the guide posts are columnar end heads, and the diameter of the columnar end heads is larger than that of the guide posts; when the guide post enters the guide groove of the circuit breaker, the columnar end head is arranged at the outer side of the vertical support plate;
the circuit breaker body is provided with a guide slot baffle plate which can move up and down, a switch wrench of the circuit breaker body can drive the guide slot baffle plate to move up and down, and when the guide slot baffle plate reaches an upper limit position, the front port of the guide slot of the circuit breaker is shielded;
the front end of the vertical support plate below the guide groove of the circuit breaker is provided with a guide groove baffle entering groove when the guide groove baffle is at the lower limit position, the inner end of the guide groove baffle entering groove is provided with a guide groove baffle vertical upward moving groove, and the height of the vertical upward moving groove corresponds to that of the guide groove baffle reaching the upper limit position;
A travel switch contact pinch roller is arranged on the outer side of the vertical support plate and is arranged on an upward moving path of the guide groove baffle on the outer side of the vertical upward moving groove;
The front end of the breaker body is provided with a front vertical plate, both sides of the front end of the front vertical plate are provided with propelling handles, the middle part of the front vertical plate is provided with a vertical rectangular opening, the rear end of the front vertical plate is provided with a propelling baffle, the middle part of the propelling baffle is provided with a lower baffle edge matched with the upper end face of the switch handle of the breaker body, and the front end of the switch handle of the breaker body penetrates out of the rectangular opening; the guide groove baffles are arranged on two sides of the pushing baffle; the pushing baffle is provided with a vertical strip-shaped hole, the front vertical plate is provided with a guide shaft, and the guide shaft penetrates through the vertical strip-shaped hole; the guide posts are arranged in the middle of two ends of the front vertical plate, and the guide slot baffle plate is arranged at the rear of the guide posts;
the upper end and the lower end of the rear end of the connecting seat are provided with wiring connecting plates;
The rear upper end and the lower end of the connecting seat are provided with fixed contact seats, the fixed contact seats are provided with elastic contacts, and the front ends of connecting bolts penetrate through holes at the lower ends of the wiring connecting plates and are screwed into threaded holes of the elastic contacts;
The connecting seat is provided with a T-shaped groove, a connecting bolt is arranged in the T-shaped groove, the head end of the connecting bolt is arranged at the big head end of the T-shape, the front end of the connecting bolt penetrates out of the small head end of the T-shape and penetrates through a through hole at the rear end of the vertical support plate, and a fastening nut is screwed on the connecting bolt at the outer side of the vertical support plate;
the upper end and the lower end of the rear part of the breaker body are provided with fixed contacts and guide shafts which extend backwards;
the circuit breaker is characterized in that a T-shaped groove is formed in the circuit breaker body, a connecting bolt is arranged in the T-shaped groove, the head end of the connecting bolt is arranged at the big head end of the T-shape, and the front end of the connecting bolt penetrates out of the small head end of the T-shape and is screwed into a central threaded hole of the fixed contact; the guide shaft is arranged below the side of the fixed contact;
The periphery of the rear part of the guide shaft is provided with a limiting boss extending outwards, the front end face of the limiting boss is propped against the rear end face of the breaker body, and the front end of the guide shaft sequentially penetrates through the breaker body and the connecting hole at the upper end of the front vertical plate and is screwed with a nut;
the upper and lower parts of the connecting seat are provided with shaft holes corresponding to the guide shafts, the fixed contact seat is correspondingly inserted with the fixed contact, and the fixed contact is abutted against the elastic contact after being inserted into the fixed contact seat;
When the breaker body is not connected with the connecting seat, if the switch wrench of the breaker body is placed at an upward pulling position, and if the breaker body is connected with the connecting seat, the guide slot baffle can block the guide slot of the breaker, the guide post cannot enter the guide slot of the breaker, and the breaker body cannot be connected with the connecting seat; when the breaker is prevented from being closed, the breaker body is connected with the connecting seat;
When the switch wrench of the circuit breaker body is downwards pulled, the circuit breaker is opened, the guide slot baffle plate moves downwards along with the switch wrench, the guide slot baffle plate does not block the front port of the guide slot of the circuit breaker, at the moment, the circuit breaker body is pushed forwards, the guide post can enter the guide slot of the circuit breaker, and the guide slot baffle plate enters the guide slot baffle plate entering slot;
When the guide slot baffle arrives at the position of the vertical upward movement groove of the guide slot baffle, namely the position of the vertical upward movement groove of the guide slot baffle corresponds to the plugging position of the circuit breaker body and the connecting seat, the circuit breaker can be closed, namely the switch spanner is upwards dialed, the guide slot baffle moves upwards in the vertical upward movement groove of the guide slot baffle along with the switch spanner, the guide slot baffle moves upwards to prop against the travel switch contact pinch roller in the process of moving upwards, and the travel switch contact pinch roller moves backwards to send a closing signal of the circuit breaker;
The upper end and the lower end of the front vertical plate are connected with the breaker body through bolts;
the guide groove baffle plate is protruded backward and then bent outward;
The number of the vertical strip-shaped holes is four, and two pushing baffles are symmetrically arranged on each side;
The part of the guide shaft penetrating out of the vertical strip-shaped hole is provided with external threads and sleeved with a gasket, and a nut is screwed on the guide shaft at the outer end of the gasket;
the pushing baffle consists of a left part and a right part, a groove is formed in the lower end of the middle part of the pushing baffle, and the bottom edge of the groove is the lower flange;
the fixed contact seat is cast in the connecting seat, and the elastic contact is inserted into a hole of the fixed contact seat;
the rear end of the vertical support plate is connected with the connecting seat through a fastener, and the front part of the vertical support plate is connected with the travel switch base through a fastener;
the upper end and the lower end of the breaker body are provided with rectangular grooves with front ends open along the front-back direction, and the rear side wall of each rectangular groove is the mounting position of a fixed contact; the front lower end of the partition wall between the connected rectangular grooves is the penetrating position of the guide shaft;
the rear end of the vertical support plate is bent outwards and then bent backwards, and the backward bending part is the connecting part of the vertical support plate and the connecting seat;
The two sides of the middle part of the upper end and the lower end of the front vertical plate are provided with connecting plates extending upwards, connecting holes are formed in the connecting plates, and nuts are screwed after the guide shafts penetrate through the connecting holes;
the periphery of the front vertical plate is bent backwards, the connecting plate is arranged at the rear end of the backward bent edge, and the guide post is arranged on the backward bent edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910437111.1A CN110071452B (en) | 2019-05-24 | 2019-05-24 | Low-voltage draw-out circuit breaker |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910437111.1A CN110071452B (en) | 2019-05-24 | 2019-05-24 | Low-voltage draw-out circuit breaker |
Publications (2)
| Publication Number | Publication Date |
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| CN110071452A CN110071452A (en) | 2019-07-30 |
| CN110071452B true CN110071452B (en) | 2024-06-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910437111.1A Active CN110071452B (en) | 2019-05-24 | 2019-05-24 | Low-voltage draw-out circuit breaker |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110767509B (en) * | 2019-09-11 | 2021-08-24 | 辽宁电能发展股份有限公司 | Low-voltage circuit breaker |
Citations (3)
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|---|---|---|---|---|
| JPH03289017A (en) * | 1990-04-03 | 1991-12-19 | Mitsubishi Electric Corp | Interlocking device of insertion-type circuit breaker |
| CN1364331A (en) * | 2000-03-17 | 2002-08-14 | 通用电气公司 | Draw out arrangement for molded case circuit breakers |
| CN209805230U (en) * | 2019-05-24 | 2019-12-17 | 辽宁电能发展股份有限公司 | Low-voltage draw-out type circuit breaker |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8509541D0 (en) * | 1985-04-13 | 1985-05-15 | Mk Electric Ltd | Electrical devices |
| KR200208223Y1 (en) * | 1998-01-19 | 2001-02-01 | 이종수 | device inter-lock of vacuum circuit breaker |
| JP2005160280A (en) * | 2003-10-31 | 2005-06-16 | Fuji Electric Fa Components & Systems Co Ltd | High-voltage enclosed switchboard |
| US7403088B2 (en) * | 2005-06-29 | 2008-07-22 | Eaton Corporation | Handle apparatus and electrical switching apparartus employing the same |
| CN203690773U (en) * | 2013-12-27 | 2014-07-02 | 常熟开关制造有限公司(原常熟开关厂） | Drawer transmission and locking mechanism of drawout type circuit breaker |
| CN206685731U (en) * | 2017-04-06 | 2017-11-28 | 施耐德电气工业公司 | Interlocking mechanism, electrical equipment and regulator cubicle |
| JP6842999B2 (en) * | 2017-05-31 | 2021-03-17 | 三菱電機株式会社 | Circuit breaker and circuit breaker safety device unit |
| CN208722824U (en) * | 2018-08-08 | 2019-04-09 | 浙江正泰电器股份有限公司 | Anti-error closing mechanism and breaker |
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2019
- 2019-05-24 CN CN201910437111.1A patent/CN110071452B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03289017A (en) * | 1990-04-03 | 1991-12-19 | Mitsubishi Electric Corp | Interlocking device of insertion-type circuit breaker |
| CN1364331A (en) * | 2000-03-17 | 2002-08-14 | 通用电气公司 | Draw out arrangement for molded case circuit breakers |
| CN209805230U (en) * | 2019-05-24 | 2019-12-17 | 辽宁电能发展股份有限公司 | Low-voltage draw-out type circuit breaker |
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|---|---|
| CN110071452A (en) | 2019-07-30 |
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