CN220963119U

CN220963119U - Isolation knife and circuit breaker

Info

Publication number: CN220963119U
Application number: CN202323056337.8U
Authority: CN
Inventors: 戴桂新; 肖关荣; 赵艺; 李海丽; 刘乾龙
Original assignee: Zhejiang Tengen Electric Co Ltd
Current assignee: Zhejiang Tengen Electric Co Ltd
Priority date: 2023-11-13
Filing date: 2023-11-13
Publication date: 2024-05-14
Anticipated expiration: 2033-11-13

Abstract

The utility model relates to the technical field of circuit breakers, in particular to a partition knife and a circuit breaker. The isolation knife comprises: the pair of isolation cutting boards are arranged at intervals and fixedly connected through bolts; the contact knife seat is arranged at one side of the pair of isolation knife plates and is positioned between the pair of isolation knife plates, and two sides of the contact knife seat are respectively and rotatably connected with the pair of isolation knife plates; the damping structure comprises an elastic piece and a matching piece, wherein the matching piece is movably arranged on the peripheral surface of the contact seat, the elastic piece is fixedly arranged between the pair of isolation knife plates, and one end of the elastic piece is matched with the matching piece to enable the matching piece to be in butt joint with the peripheral surface of the contact seat. One end of the elastic piece is matched with the matching piece and provides elasticity for the matching piece, so that the matching piece is abutted against the peripheral surface of the contact seat, and the matching piece provides reaction force for the elastic piece to fix the isolation knife board, so that the isolation knife board is prevented from falling down.

Description

Isolation knife and circuit breaker

Technical Field

The utility model relates to the technical field of circuit breakers, in particular to a partition knife and a circuit breaker.

Background

The isolating knife is a common structure in the electric power device, and the isolating knife supplies power or cuts off power to the electric power device through opening and closing. In the prior art, the isolating knife is supported by the insulating pull rod in the opening state, so that the isolating function is achieved to prevent the isolating knife from being electrified in a closing state. But insulating pull rod can break because of external force, and the isolation sword lacks the support of insulating pull rod, can slowly fall because of self gravity to until the combined floodgate, if have the staff to get into in the power device before insulating pull rod fracture and inspect or maintain, the isolation sword is combined floodgate after insulating pull rod fracture, makes power device circular telegram, can lead to the staff who carries out inspection or maintenance in power device to have life danger.

Disclosure of utility model

Therefore, the technical problem to be solved by the utility model is that the insulation pull rod is broken due to external force, the isolation knife lacks the support of the insulation pull rod, and the isolation knife slowly falls down due to self gravity and is closed until the fault is caused, so that the isolation knife and the circuit breaker are provided.

In order to solve the above problems, the present utility model provides an isolation blade comprising:

the pair of isolation cutting boards are arranged at intervals and fixedly connected through bolts;

The contact knife seat is arranged at one side of the pair of isolation knife plates and is positioned between the pair of isolation knife plates, and two sides of the contact knife seat are respectively and rotatably connected with the pair of isolation knife plates;

The damping structure comprises an elastic piece and a matching piece, wherein the matching piece is movably arranged on the peripheral surface of the contact seat, the elastic piece is fixedly arranged between the pair of isolation knife plates, and one end of the elastic piece is matched with the matching piece to enable the matching piece to be in butt joint with the peripheral surface of the contact seat.

Further, the damping structure further comprises mounting plates, the mounting plates are respectively arranged on the opposite side surfaces of the pair of isolation cutting boards, and the elastic piece is fixedly arranged on the mounting plates.

Further, a plurality of first mounting holes which are oppositely arranged are formed in the isolation cutting board, a second mounting hole which is matched with the first mounting hole is formed in the mounting plate, and the mounting plate sequentially penetrates through the first mounting hole and the second mounting hole through mounting bolts to be fixed on the isolation cutting board.

Further, a sliding groove is formed in the mounting plate, sliding blocks are arranged at two ends of the matching piece, the sliding blocks are arranged in the sliding grooves, and the matching piece is in sliding connection with the mounting plate through the sliding blocks and the sliding grooves.

Further, two second mounting holes are formed in the mounting plate, and the mounting plate sequentially penetrates through the first mounting holes and the second mounting holes through two mounting bolts to be fixed on the isolation cutting board.

Further, the elastic piece is a torsion spring, the torsion spring is sleeved on any mounting bolt, one end of the torsion spring is abutted to the other mounting bolt, and the other end of the torsion spring is abutted to the matching piece.

Further, a shaft sleeve is arranged on the bolt, and the torsion spring is sleeved on the shaft sleeve.

Further, a pair of the isolating blades are connected with the insulating pull rod.

Further, a limiting groove for limiting the matching piece is formed in the peripheral surface of the contact seat.

The embodiment also provides a circuit breaker, comprising: the spacer knife as described in any one of the preceding aspects.

The utility model has the following advantages:

the utility model discloses an isolation knife, which is characterized in that a damping structure is arranged between a pair of isolation knife plates, an elastic piece is arranged between the pair of isolation knife plates, one end of the elastic piece is matched with a matched piece and provides elasticity for the matched piece, so that the matched piece is abutted against the peripheral surface of a contact knife holder, and the matched piece provides reaction force for the elastic piece to fix the isolation knife plates, so that after an insulation pull rod is broken, the damping structure provides acting force for the isolation knife plates to prevent the isolation knife plates from falling down, and further dangerous accidents are avoided.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a front view of the spacer in embodiment 1 of the present utility model;

FIG. 2 is a top view of the spacer of example 1 of the present utility model;

FIG. 3 is a schematic diagram of a damping structure in embodiment 1 of the present utility model;

FIG. 4 is a schematic diagram of a damping structure in embodiment 1 of the present utility model;

FIG. 5 is a schematic structural view of the fitting member in embodiment 1 of the present utility model;

Reference numerals illustrate:

1. Isolating the knife board; 2. a contact blade holder; 3. a mating member; 4. a mounting plate; 5. a first mounting hole; 6. a second mounting hole; 7. installing a bolt; 8. a chute; 9. a slide block; 10. a torsion spring; 11. a shaft sleeve; 12. an insulating pull rod; 13. and a limit groove.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

Example 1

As shown in fig. 1 to 5, the present embodiment provides an isolation blade including: a pair of spaced isolating blades 1, a contact holder 2 and a damping structure. The pair of isolation blades 1 are fixedly connected by bolts. The contact blade holder 2 is arranged on one side of the pair of isolation blades 1 and is positioned between the pair of isolation blades 1, and two sides of the contact blade holder 2 are respectively connected with the pair of isolation blades 1 in a rotating way. The damping structure comprises an elastic piece and a matching piece 3, wherein the matching piece 3 is movably arranged on the peripheral surface of the contact seat 2, the elastic piece is fixedly arranged between the pair of isolation knife boards 1, and one end of the elastic piece is matched with the matching piece 3 to enable the matching piece 3 to be in butt joint with the peripheral surface of the contact seat 2.

Specifically, in fig. 3, the contact holder 2 is disposed on the left side of the isolation blade 1, the upper portion of the contact holder 2 is disposed between a pair of isolation blades 1, and the pair of isolation blades 1 are rotatably connected to the contact holder 2 through a pin. The cooperation piece 3 sets up on the right side of touch blade holder 2, and cooperation piece 3 can remove along the global of touch blade holder 2 under external force drive, and the fixed setting of elastic component is between a pair of isolation cutting board 1 and be located the right side of cooperation piece 3, and the one end and the cooperation piece 3 of elastic component are connected, make cooperation piece 3 and touch the global butt of blade holder 2 under the elastic force, and cooperation piece 3 provides the reaction force for isolation cutting board 1 through the elastic component, makes isolation cutting board 1 still can fix when lacking the support of insulating pull rod 12.

Further, the damping structure further comprises a mounting plate 4, the mounting plate 4 is respectively arranged on the opposite side surfaces of the pair of isolation cutting boards 1, and the elastic piece is fixedly arranged on the mounting plate 4.

Further, a plurality of first mounting holes 5 which are oppositely arranged are formed in the isolation cutting board 1, second mounting holes 6 which are matched with the first mounting holes 5 are formed in the mounting plate 4, and the mounting plate 4 sequentially penetrates through the first mounting holes 5 and the second mounting holes 6 through mounting bolts 7 to be fixed on the isolation cutting board 1.

Specifically, as shown in fig. 2 to 4, a plurality of first mounting holes 5 are formed in the isolation blade 1, and second mounting holes 6 are formed in the mounting plate 4, the mounting plate 4 is disposed on opposite sides of the pair of isolation blades 1, and the mounting bolts 7 sequentially pass through the first mounting holes 5 and the second mounting holes 6 to fix the mounting plate 4 on the isolation blade 1.

Further, two second mounting holes 6 are formed in the mounting plate 4, and the mounting plate 4 sequentially penetrates through the first mounting holes 5 and the second mounting holes 6 through two mounting bolts 7 to be fixed on the isolation cutting board 1.

Specifically, in this embodiment, four first mounting holes 5 are formed in the isolation blade 1, two second mounting holes 6 are formed in the mounting plate 4, and the mounting plate 4 sequentially passes through the first mounting holes 5 and the second mounting holes 6 through two mounting bolts 7 to be fixed to the isolation blade 1. Four first mounting holes 5 are formed in the isolation knife board 1, so that the position of the mounting plate 4 can be conveniently adjusted. In other alternative embodiments, six or eight or other numbers of first mounting holes 5 may be formed in the spacer blade 1.

Further, a sliding groove 8 is formed in the mounting plate 4, sliding blocks 9 are arranged at two ends of the matching piece 3, the sliding blocks 9 are arranged in the sliding groove 8, and the matching piece 3 is in sliding connection with the mounting plate 4 through the sliding blocks 9 and the sliding groove 8.

Further, the elastic member is a torsion spring 10, the torsion spring 10 is sleeved on any mounting bolt 7, one end of the torsion spring 10 is abutted with the other mounting bolt 7, and the other end of the torsion spring 10 is abutted with the matching member 3.

Specifically, a chute 8 is arranged on the mounting plate 4, two ends of the matching piece 3 are provided with sliding blocks 9, the matching piece 3 is in sliding connection with the mounting plate 4 through the sliding blocks 9 and the chute 8, in fig. 3, a torsion spring 10 is sleeved on the lower side mounting bolt 7, one end of the torsion spring 10 is abutted with the other mounting bolt 7, the other end of the torsion spring 10 is abutted with the matching piece 3, and the matching piece 3 is abutted with the contact seat 2. As shown in fig. 4, when the switch-on is needed, the isolating knife board 1 is rotated and driven by an external force, the matching piece 3 can move along the peripheral surface of the contact knife holder 2, and the torsion spring 10 continuously provides elasticity for the matching piece 3 during movement, so that the matching piece 3 still contacts with the contact knife holder 2 during movement, at the moment, the friction force between the matching piece 3 and the contact knife holder 2 is smaller than the driving force, and when the matching piece 3 moves along the peripheral surface of the contact knife holder 2, the matching piece 3 can also move in the chute 8 through the sliding block 9 to adjust the position and always contacts with the peripheral surface of the contact knife holder 2; as shown in fig. 3, when the switch is required to be opened, the isolating blade 1 rotates in the opposite direction, the matching piece 3 moves along the circumferential surface of the contact blade holder 2, the torsion spring 10 continuously provides the elastic force for the matching piece 3 during movement, so that the matching piece 3 still abuts against the contact blade holder 2 during movement, the matching piece 3 can move in the sliding groove 8 through the sliding block 9 during movement along the circumferential surface of the contact blade holder 2, after moving to a safe position, the rotating isolating blade 1 can be stopped, at the moment, the matching piece 3 abuts against the circumferential surface of the contact blade holder 2 under the elastic force of the torsion spring 10, and the matching piece 3 transmits the reactive force to the isolating blade 1 through the torsion spring 10, so that the isolating blade 1 can be fixed, and the isolating blade 1 is prevented from falling.

Further, as shown in fig. 4, a limiting groove 13 for limiting the mating member 3 is provided on the peripheral surface of the contact holder 2. When the switch-off is needed, the matching piece 3 can stop rotating the isolation blade 1 after moving into the limit groove 13 along the peripheral surface of the contact blade holder 2.

Further, as shown in fig. 3, a shaft sleeve 11 is arranged on the bolt, and a torsion spring 10 is sleeved on the shaft sleeve 11.

Further, as shown in fig. 1, a pair of isolation blades 1 is connected to an insulating tie rod 12. The insulating tie rod 12 can support the spacer blade 1.

Example 2

The embodiment discloses a circuit breaker, includes: isolation knife, isolation knife including isolation knife described in example 1.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.

Claims

1. An isolation knife, comprising:

A pair of isolation blades (1) which are arranged at intervals, wherein the pair of isolation blades (1) are fixedly connected through bolts;

The contact knife rest (2) is arranged on one side of the pair of isolation knife plates (1) and is positioned between the pair of isolation knife plates (1), and two sides of the contact knife rest (2) are respectively and rotatably connected with the pair of isolation knife plates (1);

The damping structure comprises an elastic piece and a matching piece (3), wherein the matching piece (3) is movably arranged on the peripheral surface of the contact seat (2), the elastic piece is fixedly arranged between the pair of isolation knife plates (1), and one end of the elastic piece is matched with the matching piece (3) to enable the matching piece (3) to be in butt joint with the peripheral surface of the contact seat (2).

2. The spacer knife of claim 1, wherein:

The damping structure further comprises a mounting plate (4), the mounting plate (4) is respectively arranged on the opposite side surfaces of the pair of isolation cutting boards (1), and the elastic piece is fixedly arranged on the mounting plate (4).

3. The spacer knife of claim 2, wherein:

the utility model discloses a cutting tool is characterized in that a plurality of first mounting holes (5) that set up relatively are arranged on keep apart cutting tool board (1), be provided with on mounting panel (4) with first mounting hole (5) complex second mounting hole (6), mounting panel (4) pass in proper order through mounting bolt (7) first mounting hole (5) with second mounting hole (6) are fixed keep apart on cutting tool board (1).

4. A spacer knife as claimed in claim 3, wherein:

the mounting plate (4) is provided with a sliding groove (8), two ends of the matching piece (3) are provided with sliding blocks (9), the sliding blocks (9) are arranged in the sliding groove (8), and the matching piece (3) is in sliding connection with the mounting plate (4) through the sliding blocks (9) and the sliding grooves (8).

5. The spacer knife of claim 4, wherein:

Two second mounting holes (6) are formed in the mounting plate (4), and the mounting plate (4) sequentially penetrates through the first mounting holes (5) and the second mounting holes (6) through two mounting bolts (7) to be fixed on the isolation cutting board (1).

6. The spacer knife of claim 5, wherein:

The elastic piece is a torsion spring (10), the torsion spring (10) is sleeved on any mounting bolt (7), one end of the torsion spring (10) is abutted to the other mounting bolt (7), and the other end of the torsion spring (10) is abutted to the matching piece (3).

7. The spacer knife of claim 6, wherein:

The bolt is provided with a shaft sleeve (11), and the torsion spring (10) is sleeved on the shaft sleeve (11).

8. The spacer knife according to any one of claims 1 to 7 wherein:

The pair of isolation blades (1) is connected with an insulation pull rod (12).

9. The spacer knife according to any one of claims 1 to 7 wherein:

the peripheral surface of the contact blade holder (2) is provided with a limiting groove (13) for limiting the matching piece (3).

10. A circuit breaker, comprising: the spacer as defined in any one of claims 1 to 9.