CN212542332U

CN212542332U - Arc extinguishing device of circuit breaker

Info

Publication number: CN212542332U
Application number: CN202021822372.XU
Authority: CN
Inventors: 池万麟
Original assignee: Zhejiang Shengchuang Electric Co ltd
Current assignee: Zhejiang Shengchuang Electric Co ltd
Priority date: 2020-08-27
Filing date: 2020-08-27
Publication date: 2021-02-12
Anticipated expiration: 2030-08-27

Abstract

The utility model discloses a circuit breaker arc extinguishing device relates to circuit breaker equipment technical field, establish the outside casing at the arc extinguishing subassembly including arc extinguishing subassembly and cover, be provided with the fixture who is used for the fixed arc extinguishing subassembly of centre gripping in the casing. The clamping mechanism comprises two opposite supporting plates arranged on the inner side wall of the shell, shaft seats I are fixed at the tops of the two supporting plates, a bearing I is installed in each shaft seat I, and a sleeve is fixed to the inner ring of each bearing I in a clamping mode. Through the fixture who adds in the casing, usable band pulley two, band pulley one, the pivot, bevel gear two, bevel gear one orders about the sleeve rotatory, make mutual screw thread effect between sleeve and screw rod, force splint to do the direction motion towards the arc extinguishing subassembly under the limiting displacement of telescopic link to it is fixed to carry out effectual centre gripping to the corresponding part of arc extinguishing subassembly, guarantee the stability of arc extinguishing subassembly when accomodating in the casing, avoid the arc extinguishing subassembly to damage because of colliding with in the casing.

Description

Arc extinguishing device of circuit breaker

Technical Field

The utility model relates to a circuit breaker equipment technical field, in particular to circuit breaker arc extinguishing device.

Background

The circuit breaker generally includes parts such as arc control device, trip gear, contact system and operating device, can produce electric arc when circuit breaker sound contact separates, because the route of the arm motion of touching of moving contact is in the appearance chamber of arc extinguishing bars piece, so electric arc will get into the explosion chamber at the production in-process, introduce electric arc between the bars piece through the arc extinguishing bars piece with electric arc, cut into the short arc of polyphone with electric arc, make electric arc thin and improve electric arc voltage drop fast to reach the effect of arc extinguishing.

The existing arc extinguishing device of the circuit breaker usually comprises an arc extinguishing assembly and a shell used for accommodating the arc extinguishing assembly, but the arc extinguishing assembly cannot be effectively fixed in the shell, so that the arc extinguishing assembly is not stable enough in the shell, and the arc extinguishing assembly is easy to collide with and damage.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a circuit breaker arc control device has solved the arc extinguishing subassembly among the current circuit breaker arc control device and can't effectively be fixed in the casing, leads to its technical problem that easily takes place to collide with and damage.

The above technical purpose of the present invention can be achieved by the following technical solutions: an arc extinguishing device of a circuit breaker comprises an arc extinguishing assembly and a shell covering the exterior of the arc extinguishing assembly, wherein a clamping mechanism for clamping and fixing the arc extinguishing assembly is arranged in the shell;

the clamping mechanism comprises two supporting plates which are oppositely arranged on the inner side wall of the shell, shaft seats I are fixed at the tops of the two supporting plates, a bearing I is installed in each shaft seat I, a sleeve is fixedly clamped in the inner ring of each bearing I, a screw rod which is perpendicular to the side wall of the shell is inserted into one end, opposite to each sleeve, of each sleeve in a threaded manner, an arc-shaped clamping plate is fixed at the other end of each screw rod, and each supporting plate is connected with the adjacent clamping plate through an expansion link; and a clamping space for clamping and fixing the corresponding part of the arc extinguishing assembly is formed between the two clamping plates.

Preferably, a first bevel gear is fixed at one end of each of the two sleeves, two transmission shafts perpendicular to the screw are rotatably inserted into the top of the housing, and a second bevel gear engaged with the corresponding first bevel gear is fixed at one end of each transmission shaft extending into the housing.

Preferably, the other end of each transmission shaft is fixed with a first belt wheel located above the shell, the top of the shell is provided with a second belt wheel through a support shaft, and the second belt wheel is in transmission connection with the first belt wheels through a transmission belt.

Preferably, a bolt parallel to the transmission shaft is inserted in the second belt wheel in a rotating mode, and a jack for inserting the bolt is formed in the top of the shell.

Preferably, two second shaft seats are arranged on the inner side wall of the shell, second bearings are installed in the two second shaft seats, and inner rings of the two bearings are fixed to the outer sides of the two transmission shafts in a clamped mode respectively.

Preferably, a plurality of flexible pressing blocks are uniformly arranged on the clamping surface of each clamping plate.

Preferably, the bottom of the housing has an insertion opening into which the arc extinguishing assembly is inserted, and the bottom of the housing is provided with a housing cover for closing the insertion opening.

Preferably, the cover body inner side of the shell cover is provided with a salient point, and the shell body is provided with a groove matched with the salient point in a clamping manner.

The utility model has the advantages as follows:

the utility model discloses a circuit breaker arc control device, through the fixture who adds in the casing, usable band pulley two, band pulley one, the pivot, bevel gear two, bevel gear one orders about the sleeve rotatory, make mutual screw thread effect between sleeve and screw rod, force splint to make the direction motion towards the arc extinguishing subassembly under the limiting displacement of telescopic link to it is fixed to carry out effectual centre gripping to the corresponding part of arc extinguishing subassembly, guarantee the stability of arc extinguishing subassembly when accomodating in the casing, avoid the arc extinguishing subassembly to damage because of colliding with in the casing.

Drawings

Fig. 1 is a schematic sectional view of an arc extinguishing apparatus of a circuit breaker according to an embodiment of the present invention;

FIG. 2 is a schematic top view of a portion of the clamping mechanism of FIG. 1;

fig. 3 is a schematic top view of the arc extinguishing device of the circuit breaker of fig. 1;

fig. 4 is an enlarged schematic view of a portion a in fig. 1.

The meaning of the reference numerals: 1. an arc extinguishing assembly; 2. a housing; 3. a shell cover; 4. a support plate; 5. a first shaft seat; 6. a sleeve; 7. a screw; 8. a splint; 9. a telescopic rod; 10. a first bevel gear; 11. a drive shaft; 12. a second bevel gear; 13. a second shaft seat; 14. a first belt wheel; 15. a second belt wheel; 16. a support shaft; 17. a bolt; 18. a transmission belt; 19. salient points; 20. a groove; 21. and (3) pressing the block flexibly.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly. Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

Referring to fig. 1 to 4, an arc extinguishing apparatus of a circuit breaker includes an arc extinguishing assembly 1 and a housing 2 covering the arc extinguishing assembly 1, wherein a clamping mechanism for clamping and fixing the arc extinguishing assembly 1 is disposed in the housing 2. Can play the effect of good protection to arc extinguishing subassembly 1 through casing 2, avoid the pollutant in the environment to lead to the damage of arc extinguishing subassembly 1, improve arc extinguishing subassembly 1's life. The arc extinguishing component in the shell 2 can be well fixed through the clamping mechanism.

Fixture includes two backup pads 4 that set up on 2 inside walls of casing relatively, the top of two backup pads 4 all is fixed with axle bed 5, install bearing one (not shown) in every axle bed 5, the equal block of the inner circle of every bearing one is fixed with sleeve 6, the equal screw thread interlude of the one end that two sleeves 6 are relative has 2 lateral walls mutually perpendicular screw rods 7 with the casing, the other end of every screw rod 7 is fixed with and is curved splint 8, be connected through telescopic link 9 between every backup pad 4 and the adjacent splint 8. A clamping space for clamping and fixing the corresponding part of the arc extinguishing assembly is formed between the two clamping plates 8. Through ordering about two sleeves 6 respectively rotatory on corresponding axle bed 5, can drive two screw rods 7 and stretch out or retract in the tube socket of corresponding sleeve 6, make two splint 8 make the direction motion towards arc extinguishing subassembly 1 or keep away from arc extinguishing subassembly 1's direction motion under the limiting displacement of telescopic link 9 separately to the corresponding position to arc extinguishing subassembly 1 carries out the clamping or takes off.

A first bevel gear 10 is fixed at one end of each of the two sleeves 6, two transmission shafts 11 perpendicular to the screw 7 are rotatably inserted into the top of the shell 2, and one end of each transmission shaft 11 extends into the shell 2 and is fixed with a second bevel gear 12 meshed with the corresponding first bevel gear 10. In this embodiment, a shaft hole (not labeled) is formed at the top of the housing 2 for the transmission shaft 11 to pass through, and the transmission shaft 11 can rotate in the shaft hole. The drive shaft 11 is driven to rotate to drive the corresponding bevel gear II 12 to rotate, and the bevel gear II 12 drives the corresponding bevel gear I10 to rotate, and the bevel gear I10 drives the corresponding sleeve 6 to rotate.

The other end of each transmission shaft 11 is fixed with a first belt wheel 14 positioned above the shell 2, the top of the shell 2 is provided with a second belt wheel 15 through a support shaft 16, and the second belt wheel 15 is in transmission connection with the first two belt wheels 14 through a transmission belt 18. In this embodiment, the second belt wheel 15 and the first belt wheel 14 are distributed in a triangular shape, so that the transmission belt 18 can be always kept in a tensioned state. By driving the second belt wheel 15 to rotate, the second belt wheel 15 drives the first belt wheels 14 to synchronously rotate through the transmission belt 18, and the first belt wheels 14 drive the corresponding transmission shafts 11 to rotate respectively.

A bolt 17 parallel to the transmission shaft 11 is rotatably inserted on the second belt wheel 15. In this embodiment, a sliding hole (not shown) for inserting the pin 17 is formed in the wheel body of the second belt wheel 15, and the pin 17 can slide up and down in the sliding hole. The top of the housing 2 is provided with a jack (not shown) for inserting the plug 17. The bolt 17 is inserted into the insertion hole, so that the second belt wheel 15 can be prevented from rotating, the position of the adjusted rear clamping plate 8 can be locked, and the device is convenient and practical.

Two shaft seat II 13 are arranged on the inner side wall of the shell 2, bearings II (not shown) are installed in the two shaft seat II 13, and inner rings of the two bearings II are clamped and fixed with the outer sides of the two transmission shafts 11 respectively.

Evenly be provided with a plurality of flexible forcing blocks 21 on every splint 8's the holding surface, through flexible forcing block 21, can make splint 8 and arc extinguishing assembly 1's corresponding installation site realize the flexible contact, avoid causing arc extinguishing assembly 1's damage.

The bottom of the housing 2 has an insertion opening (not labeled) for inserting the arc extinguishing assembly 1, and the bottom of the housing 2 is provided with a housing cover 3 for closing the insertion opening. The housing cover 3 facilitates the insertion and removal of the arc extinguishing assembly 1 into the housing 2.

The cover body inner side of the shell cover 3 is provided with a convex point 19, and the shell body 2 is provided with a groove 20 which is in clamping fit with the convex point 19. Through the clamping cooperation between bump 19 and recess 20, make the connection between casing 2 and cap 3 more firm.

The above description specifically describes the preferred embodiment of the present invention, but of course, the present invention can also adopt different forms from the above embodiments, and equivalent changes or corresponding modifications made by those skilled in the art without departing from the spirit of the present invention should fall within the protection scope of the present invention.

Claims

1. The arc extinguishing device of the circuit breaker is characterized by comprising an arc extinguishing assembly and a shell covering the exterior of the arc extinguishing assembly, wherein a clamping mechanism for clamping and fixing the arc extinguishing assembly is arranged in the shell;

2. The arc extinguishing apparatus of a circuit breaker according to claim 1, wherein a first bevel gear is fixed to an end of each of the two sleeves which is away from each other, and two transmission shafts perpendicular to the screw are rotatably inserted into a top of the housing, and each of the transmission shafts has an end extending into the housing and fixed to a second bevel gear engaged with the corresponding first bevel gear.

3. The arc extinguishing apparatus of the circuit breaker according to claim 2, wherein a first pulley is fixed to the other end of each transmission shaft and located above the housing, a second pulley is mounted on the top of the housing through a support shaft, and the second pulley is in transmission connection with the first pulleys through a transmission belt.

4. The arc extinguishing apparatus of the circuit breaker of claim 3, wherein the second pulley is rotatably inserted with a pin parallel to the transmission shaft, and the top of the housing is provided with a jack for inserting the pin.

5. The arc extinguishing device of the circuit breaker according to claim 2, characterized in that two second shaft seats are arranged on the inner side wall of the shell, two second bearings are arranged in the two second shaft seats, and the inner rings of the two second bearings are respectively clamped and fixed with the outer sides of the two transmission shafts.

6. The circuit breaker arc extinguisher of claim 1, wherein a plurality of compliant forcing blocks are uniformly disposed on the clamping face of each said clamping plate.

7. The circuit breaker arc distinguishing apparatus of claim 1, wherein the bottom of the housing has an insertion opening into which the arc distinguishing assembly is inserted, and the bottom of the housing is provided with a cover for closing the insertion opening.

8. The arc extinguishing apparatus of the circuit breaker according to claim 7, wherein the cover body of the housing cover is provided with a convex point at an inner side thereof, and the housing is provided with a groove for snap-fitting with the convex point.