CN210778296U - Energy storage mechanism of circuit breaker - Google Patents
Energy storage mechanism of circuit breaker Download PDFInfo
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- CN210778296U CN210778296U CN201921682816.1U CN201921682816U CN210778296U CN 210778296 U CN210778296 U CN 210778296U CN 201921682816 U CN201921682816 U CN 201921682816U CN 210778296 U CN210778296 U CN 210778296U
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Abstract
The utility model provides a pair of energy storage mechanism of circuit breaker is connected because the one end of the spring unit that the energy storage was used is rotated with five fixed axles of energy storage lever subassembly, and the other end rotates with one fixed axle that is located its below to be connected, makes it vertically arrange like this, in mechanism owner's curb plate, does not occupy the body space. In addition, the original three-link structure of the closing tripping system is changed into a four-link structure consisting of a lever piece, a link piece and a locking lever piece, and two fulcrum shafts, namely the second shaft and the lever fulcrum shaft, are arranged in the locking lever assembly, so that the stress of parts and fulcrum shafts in the locking assembly is reduced, the service life of related parts can be prolonged, and the problem that the locking lever of the closing tripping system is easy to lose efficacy after being stressed due to fatigue is solved.
Description
Technical Field
The utility model relates to a low-voltage apparatus field, in particular to circuit breaker operating device.
Background
In the electrical and low voltage industry, circuit breakers are used as a kind of power distribution equipment to protect electrical equipment in the power grid, i.e. when a fault occurs in the power grid, such as a short-circuit current or a fault current, the circuit breaker breaks the current to protect the electrical equipment and personnel in the power grid. In order to realize the protection function, an operating mechanism is arranged in the circuit breaker, and the moving contact and the static contact of the circuit breaker can be separated by controlling the movement of parts in the operating mechanism, so that the circuit is cut off.
With the improvement of the performance index of the circuit breaker, the requirement on an operating mechanism is higher and higher. And operating mechanisms in the industry are seriously homogenized and lack novelty.
Wherein, the energy storage mechanism of the operating mechanism plays an important role in the energy storage process of the mechanism. However, the mechanism directly affects the structural complexity, the size and the operational reliability of the operating mechanism of the whole circuit breaker.
Therefore, the energy storage mechanism of the operating mechanism of the existing circuit breaker generally has the following defects:
1. the energy storage spring is transversely placed and protrudes out of the plane of the main side plate of the mechanism to occupy the space of the body; and
2. because the closing tripping system adopts a three-link structure in the energy storage and closing processes, the locking lever only has one fulcrum shaft, and the locking lever, the fulcrum shaft and related parts are stressed too much and are easy to damage.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides an energy storage mechanism of circuit breaker includes a curb plate, an energy storage lever subassembly, a latch assembly, a spring assembly, a camshaft and combined floodgate semi-axis:
the energy storage lever assembly comprises a fixed shaft V, a bearing and a shaft pin I, one end of the spring assembly is rotatably connected with the fixed shaft V of the energy storage lever assembly, and the other end of the spring assembly is rotatably connected with a fixed shaft II positioned below the spring assembly; the energy storage lever assembly rotates on the side plate through the first shaft pin;
the camshaft comprises a rotatable camshaft end part shaft surface, a cam piece outer contour and a cam cantilever buckling surface, wherein the cam piece outer contour is in contact sliding with the bearing, and the camshaft rotates on the side plate through the camshaft end part shaft surface;
the locking assembly comprises a lever, a connecting rod and a locking lever, the lever comprises a lever fulcrum shaft, a first shaft, a shaft sleeve and a lever sheet, the lever fulcrum shaft rotates on the side plate, a cam cantilever fastening surface is in separable contact with the shaft sleeve,
the lock catch lever comprises a lock catch lever piece, a surface and a lock catch lever fulcrum shaft, the lock catch lever fulcrum shaft is fixed on the lock catch lever piece, and the lock catch lever fulcrum shaft rotates on the side plate; the connecting rod comprises a connecting rod piece, a second shaft and a third shaft; the first shaft is fixed on the lever piece, a shaft sleeve rotates on the first shaft, and the lever piece rotates on the lever fulcrum shaft; one end of the connecting rod piece is hinged with one end of the lever piece through the second shaft, and the other end of the connecting rod piece is hinged with one end of the locking lever piece through the third shaft; and the surface of the locking lever can be in separable contact with the outer contour surface of the closing half shaft, the locking lever rotates around a locking lever fulcrum shaft, and when the closing half shaft rotates around the side plate, the surface of the locking lever can slide in the notch of the closing half shaft.
Furthermore, the shell of the circuit breaker consists of a pair of side plates which are fixedly connected through a first fixed shaft and a second fixed shaft.
Furthermore, the energy storage lever assembly comprises a pair of energy storage lever plates which are connected through a third fixed shaft, a fourth fixed shaft and a fifth fixed shaft.
Further, the lever piece comprises a pair of lever pieces and is fixed through a second shaft pin.
Further, the connecting rod piece includes two connecting rod pieces, its one end with two lever pieces pass through axle two is articulated, the other end with the one end of hasp lever piece is passed through axle three is articulated and fixed, hasp lever piece is located between two connecting rod pieces.
Further, the spring assembly includes a spring.
The utility model provides a pair of energy storage mechanism of circuit breaker is connected because the one end of the spring unit that the energy storage was used is rotated with five fixed axles of energy storage lever subassembly, and the other end rotates with one fixed axle that is located its below to be connected, makes it vertically arrange like this, in mechanism owner's curb plate, does not occupy the body space.
In addition, the original three-link structure of the closing tripping system is changed into a four-link structure consisting of a lever piece, a link piece and a locking lever piece, and two fulcrum shafts, namely the second shaft and the lever fulcrum shaft, are arranged in the locking lever assembly, so that the stress of parts and fulcrum shafts in the locking assembly is reduced, the service life of related parts can be prolonged, and the problem that the locking lever of the closing tripping system is easy to lose efficacy after being stressed due to fatigue is solved.
Drawings
FIG. 1 is a schematic view of an actuator in a power-off state.
Fig. 2 is a schematic diagram of the energy storage process state of the operating mechanism.
Fig. 3 is a schematic diagram of the operating mechanism in a state of energy storage completion.
Fig. 4 is a schematic structural view of an operating mechanism energy storage lever assembly.
FIG. 5 is a schematic view of the operating mechanism latch assembly.
Fig. 6 is a schematic diagram of the operating mechanism spring assembly.
Fig. 7 is a schematic view of the operating mechanism spring support structure.
Fig. 8 is a schematic diagram of the spring seat structure of the operating mechanism.
FIG. 9 is a schematic view of the camshaft structure of the operating mechanism.
Fig. 10 is a schematic structural diagram of a closing half shaft of the operating mechanism.
Description of reference numerals:
1: a side plate; 101: a first fixed shaft; 102: a second fixed shaft; 2: an energy storage lever assembly; 201: an energy storage lever plate; 202: a first shaft pin; 203: a bearing; 204: fixing a shaft III; 205: fixing a shaft IV; 206: fixing a shaft V; 3: a latch assembly; 31: a lever; 311: a lever plate; 312: a lever fulcrum shaft; 313: a first shaft; 314: a shaft sleeve; 315: a second shaft pin; 32: a connecting rod; 321: a connecting rod piece; 322: a second shaft; 323: a third shaft; 33: a latch lever; 331: a locking lever piece; 331 a: the locking lever surface; 331 b: a latch lever arc surface; 332: a latch lever fulcrum shaft; 4: a spring assembly; 41: a spring support; 41 a: a spring support arc surface; 41 b: a spring support cylindrical surface; 41 c: a spring support pilot hole face; 42: a spring; 43: a spring seat; 43 a: a spring seat cambered surface; 43 b: a spring seat cylindrical surface; 5: a camshaft; 5 a: a camshaft end axial surface; 5 b: the outer contour of the cam sheet; 5 c: the outer circle surface of the camshaft cantilever; 5 d: a camshaft cantilever buckle surface; 6: a switching-on half shaft; 6 a: a closing half shaft outer contour surface; 6 b: closing a half shaft notch; 6 c: closing half shaft limit shaft.
Detailed Description
Referring to fig. 1, an energy storage mechanism of a circuit breaker includes an energy storage lever assembly 2, a latch assembly 3, a spring assembly 4, a cam shaft 5, and a closing half shaft 6, which are disposed between a pair of side plates 1.
The pair of side plates 1 form a shell, and the shell is fixedly connected through a plurality of fixed shafts such as a first fixed shaft 101, a second fixed shaft 102 and the like. In the present embodiment, the charging lever assembly 2 is arranged above the cam shaft 5, while the latch assembly 3 is located below the cam shaft 5.
Referring to fig. 1 to 4, the energy storage lever assembly 2 includes a pair of energy storage lever plates 201 connected by a fixed shaft three 204, a fixed shaft four 205, and a fixed shaft five 206. The energy storage lever assembly 2 is provided with a pair of bearings 203 fixed on the outer side of the energy storage lever plate 201 and a pair of first shaft pins 202 fixed on the outer side of the energy storage lever plate, and the energy storage lever assembly 2 rotates between the pair of side plates 1 through the pair of first shaft pins 202.
Referring to fig. 1 to 5, the latch assembly 3 includes a lever 31, a link 32, and a latch lever 33. The lever 31 is formed by fixing two lever pieces 311 through a second shaft pin 315, the two lever pieces 311 rotate on a lever fulcrum shaft 312, and the lever fulcrum shaft 312 rotates on the pair of side plates 1. The first shaft 313 is fixed on the two lever pieces 311. The sleeve 314 rotates on the first shaft 313 between the two lever pieces 311. The two lever pieces 311 are hinged with one ends of the two connecting rod pieces 321 through a second shaft 322, and the two lever pieces 311 are arranged outside the two connecting rod pieces 321.
With further reference to fig. 5, the latch lever 33 includes a latch lever piece 331 and a latch lever fulcrum shaft 332, the latch lever fulcrum shaft 332 being fixed to the latch lever piece 331, the latch lever fulcrum shaft 332 being rotatable on the pair of side plates 1. The other ends of the two link plates 321 are hinged to one end of the locking lever plate 331 through a third shaft 323, and can rotate with each other. Referring again to fig. 10, the surface 331a of the latch lever 33 may be in separable contact with the outer contoured surface 6a of the closing half shaft 68, and the restraining shaft 6c of the closing half shaft 6 may be in separable contact with features within the side plate 1. When the locking lever 33 rotates around the locking lever fulcrum shaft 332 and the closing half shaft 6 rotates on the pair of side plates 1, the arc surface 331b of the locking lever 33 can slide in the notch 6b of the closing half shaft 6.
Referring to fig. 9, the camshaft 5 includes a camshaft end axial surface 5a rotating between the pair of side plates 1, a cam lobe outer profile 5b, a cam suspension outer circumferential surface 5c, and a cam suspension hook surface 5 d. Both end axial faces 5a of the camshaft 5 rotate on the pair of side plates.
Referring to fig. 6, 7 and 8, the spring assembly 4 includes a spring support 41, a spring 42, and a spring seat 43. The spring support guide hole surface 41c of the spring support 41 is in sliding contact with the cylindrical surface 43b of the spring seat 43, the spring 42 is compressed or released between the spring support 41 and the spring seat 43, and the cylindrical surface 41b of the spring support 41 is in contact with the inner diameter of the spring 42 for guiding. The arc surface 43a of the spring seat 43 is hinged with the second fixing shaft 102, the arc surface 41a of the spring support 41 is hinged with the fifth fixing shaft 206 of the energy storage lever assembly 2, and the energy storage lever assembly 2 can compress and release the spring 42 through rotation.
Referring again to fig. 1-3, the operating mechanism is charged from a discharged state to a charged state. The energy storage process of the operating mechanism is as follows: when the cam shaft 5 rotates clockwise, the outer contour 5b of the pair of cam plates contacts with the pair of bearings 203 of the energy storage lever assembly 2 to drive the energy storage lever assembly 2 to rotate counterclockwise (see fig. 2), the fixed shaft five 206 of the energy storage lever assembly 2 is hinged with the cambered surface 41a of the spring support 41 of the spring assembly 4 to rotate (see fig. 6), and the spring support 41 compresses the spring 42. Meanwhile, the cam cantilever outer circular surface 5c of the cam shaft 5 contacts with the shaft sleeve 314 of the locking assembly 3, when the cam shaft 5 rotates clockwise, the cam cantilever outer circular surface 5c is separated from the shaft sleeve 314 of the locking assembly 3 (see fig. 9), and simultaneously, the locking assembly 3 contacts with the first fixed shaft 101 under the counterclockwise spring restoring force (see fig. 2), and the surface 331a of the locking lever is above the outer contour surface 6a of the closing half shaft 6 (see fig. 2 and 5). As shown in fig. 2, the operating mechanism is now in the charging process state. When the camshaft 5 continues to rotate clockwise, the cam cantilever snap surface 5d of the camshaft 5 contacts the sleeve 314 of the latch assembly 3, the camshaft 5 stops rotating, and the snap surface 331a of the latch assembly 3 contacts the outer contour surface 6a of the closing half shaft 6 under the force of the spring 42. As shown in fig. 3 and 5, the operating mechanism is now in the charged state.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and are not limited. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art will understand that modifications and equivalent substitutions can be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and all of them shall fall within the scope of the claims of the present invention.
Claims (6)
1. The utility model provides an energy storage mechanism of circuit breaker which characterized in that, it includes a curb plate (1), an energy storage lever subassembly (2), a latch assembly (3), a spring unit (4), a camshaft (5) and combined floodgate semi-axis (6):
the energy storage lever assembly (2) comprises a fixing shaft five (206), a bearing (203) and a shaft pin I (202), one end of the spring assembly (4) is rotatably connected with the fixing shaft five (206) of the energy storage lever assembly (2), and the other end of the spring assembly is rotatably connected with a fixing shaft II (102) positioned below the spring assembly;
the camshaft (5) comprises a rotatable camshaft end shaft surface (5a), a cam piece outer contour (5b) and a cam cantilever buckling surface (5d), the cam piece outer contour (5b) slides in contact with the bearing (203), and the camshaft (5) rotates on the side plate (1) through the camshaft end shaft surface (5 a);
the locking assembly (3) comprises a lever (31), a connecting rod (32) and a locking lever (33), the lever (31) comprises a lever fulcrum shaft (312), a first shaft (313), a shaft sleeve (314) and a lever piece (311), and the lever fulcrum shaft(312) At side board (1)On the upper partRotating a cam cantilever snap surface (5d) in separable contact with a bushing (314),
the lock catch lever (33) comprises a lock catch lever piece (331), faces (331a, 331b) and a lock catch lever fulcrum shaft (332), the lock catch lever fulcrum shaft (332) is fixed on the lock catch lever piece (331), and the lock catch lever fulcrum shaft (332) rotates on the side plate (1); the connecting rod (32) comprises a connecting rod piece (321), a second shaft (322) and a third shaft (323); the first shaft (313) is fixed on the lever piece (311), a shaft sleeve (314) rotates on the first shaft (313), and the lever piece (311) rotates on a lever fulcrum shaft (312); one end of the connecting rod piece (321) is hinged with one end of the lever piece (311) through the second shaft (322), and the other end of the connecting rod piece (321) is hinged with one end of the locking lever piece (331) through the third shaft (323); and the closing half shaft (6) comprises an outer contour surface (6a) and a notch (6b), the surface (331a) of the locking lever (33) is in separable contact with the outer contour surface (6a) of the closing half shaft (6), the locking lever (33) rotates around a locking lever fulcrum shaft (332), and when the closing half shaft (6) rotates around the side plate (1), the surface (331b) of the locking lever (33) can slide in the notch (6b) of the closing half shaft (6).
2. An energy storage mechanism for a circuit breaker according to claim 1, characterized in that the housing of the circuit breaker is formed by a pair of side plates (1) which are fixedly connected by a first fixed shaft (101) and a second fixed shaft (102).
3. The energy storage mechanism of circuit breaker according to claim 1, characterized in that said energy storage lever assembly (2) comprises a pair of energy storage lever plates (201) connected by a fixed shaft three (204), a fixed shaft four (205) and a fixed shaft five (206).
4. The energy storage mechanism of the circuit breaker as claimed in claim 1, wherein said lever piece (311) comprises a pair of lever pieces (311) and is fixed by a second pin (315).
5. An energy storage mechanism of a circuit breaker as claimed in claim 1, wherein said link plate (321) comprises two link plates (321), one end of which is hinged to said two lever plates (311) through said second shaft (322), the other end of which is hinged to one end of said latch lever plate (331) through said third shaft (323) to be fixed, and said latch lever plate (331) is located between said two link plates (321).
6. An energy storage mechanism for a circuit breaker as claimed in claim 1, characterized in that said spring assembly (4) comprises a spring (42).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921682816.1U CN210778296U (en) | 2019-09-30 | 2019-09-30 | Energy storage mechanism of circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921682816.1U CN210778296U (en) | 2019-09-30 | 2019-09-30 | Energy storage mechanism of circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210778296U true CN210778296U (en) | 2020-06-16 |
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ID=71036177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921682816.1U Active CN210778296U (en) | 2019-09-30 | 2019-09-30 | Energy storage mechanism of circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210778296U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022028228A1 (en) * | 2020-08-06 | 2022-02-10 | 河南平高通用电气有限公司 | Spring-operated mechanism, closing latch system, and circuit breaker |
-
2019
- 2019-09-30 CN CN201921682816.1U patent/CN210778296U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022028228A1 (en) * | 2020-08-06 | 2022-02-10 | 河南平高通用电气有限公司 | Spring-operated mechanism, closing latch system, and circuit breaker |
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