Circuit breaker opening device

Abstract

The utility model relates to the technical field of electrical equipment, in particular to a circuit breaker opening device which is improved on the basis of an existing circuit breaker mechanism, a spline dial wheel is designed to be connected with a spline shaft of the existing circuit breaker mechanism, then the spline dial wheel is matched with a reset piece, and in the opening state, the reset piece is matched with the spline dial wheel. The tripping transmission part can be driven to swing through the opening electromagnet, and then the circuit breaker mechanism is driven to be opened. Meanwhile, when the circuit breaker mechanism is switched off under the pressure of an internal spring, a reset piece swings anticlockwise under the traction effect of a reset spring, and the reset effect of a switching-off electromagnet is guaranteed. And meanwhile, under the normal closing operation of the circuit breaker, the internal structure of the circuit breaker mechanism can rotate forward by the spline dial wheel and can drive the reset piece to swing so as to open a certain angle, so that the closing of the opening electromagnet or the original closing mechanism of the circuit breaker mechanism in the later period is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical equipment, in particular to a circuit breaker tripping device. Background Art

[0002] Since the gas-insulated switchgear has the advantages of small volume and strong environmental adaptability compared with the traditional metal-enclosed switchgear, it currently occupies an increasing proportion in the market and is gradually recognized by customers. The existing gas-insulated switchgear circuit breaker units often use self-powered microcomputer protection to separate the faulty line in some areas. The microcomputer protection with passive output can be designed in the original electrical tripping circuit, but for the microcomputer protection with active output, a separate tripping scheme needs to be designed to distinguish it from the original tripping circuit of the circuit breaker mechanism. The commonly used self-powered microcomputer protection tripping signal is an active signal output with low output power and output voltage, which puts new requirements on the tripping coil and tripping structure, resulting in the difficulty of adapting the existing tripping mechanism of the microcomputer protection with active output to the original tripping circuit of the existing circuit breaker mechanism, leading to high manufacturing cost and low adaptability. Content of the Utility Model

[0003] To achieve the above object, the utility model provides a circuit breaker tripping device, which is installed on the circuit breaker mechanism and includes:

[0004] A mounting plate, which is mounted on the circuit breaker mechanism;

[0005] A spline dial, which is mounted on the spline shaft of the circuit breaker mechanism and can rotate with the spline shaft;

[0006] A tripping electromagnet, which is mounted on the mounting plate,

[0007] A reset member, the middle part of which is rotatably mounted on the circuit breaker mechanism; one end of the reset member can cooperate with the driving end of the tripping electromagnet, and the other end can cooperate with the spline dial;

[0008] A reset spring, one end of which is connected to the end of the reset member away from the spline dial, and the other end is connected to the mounting plate;

[0009] A tripping transmission member, which is mounted on the tripping half shaft of the circuit breaker mechanism;

[0010] Wherein, the driving end of the tripping electromagnet can push the tripping transmission member to drive the tripping half shaft to rotate, and the tripping half shaft can push the tripping transmission member outwards to trip after the circuit breaker mechanism is closed.

[0011] In some possible implementation manners, mounting structures are respectively arranged on one ends of the mounting plate and the reset member corresponding to each other, and both ends of the reset spring are respectively connected to the two mounting structures.

[0012] In some possible implementations, the trip transmission member includes a metal baffle and an insulating seat, the metal baffle is installed on the insulating seat, the insulating seat is mounted on the opening half-shaft and rotates coaxially with the opening half-shaft, and the metal baffle can cooperate with the driving end of the opening electromagnet.

[0013] In some possible implementations, the metal baffle and one end corresponding to the reset member are staggered and can both cooperate with the driving end of the opening electromagnet.

[0014] In some possible implementations, a long disconnecting connecting column is provided on the circuit breaker mechanism, and the reset member is rotatably mounted on the long disconnecting connecting column.

[0015] In some possible implementations, limit rings are provided on both sides of the switch-off long connecting column located on the reset member.

[0016] In some possible implementations, a limiting column is provided on the circuit breaker mechanism, and a limiting arc groove cooperating with the limiting column is provided on the reset member.

[0017] In some possible implementations, a push rod is provided at one end of the reset member that cooperates with the spline thumbwheel, and the push rod can cooperate and abut with a toggle rod on the spline thumbwheel.

[0018] In some possible implementations, the reset member is provided with a hook head that cooperates with the opening electromagnet.

[0019] In some possible implementations, the opening electromagnet is a retaining electromagnet, and its installation direction is perpendicular or approximately perpendicular to the action end of the tripping transmission member.

[0020] Compared with the prior art, the beneficial effect of the utility model is that the circuit breaker tripping device of the utility model is improved on the existing circuit breaker mechanism, and the spline dial is designed to be connected with the spline shaft of the existing circuit breaker mechanism, and then the spline dial is adapted to the reset member. In the tripping state, the tripping electromagnet can be used to drive the tripping transmission member to swing, thereby driving the circuit breaker mechanism to trip; at the same time, when the circuit breaker mechanism is tripped under the pressure of the internal spring, the pulling action of the reset spring is used to make the reset member swing counterclockwise, thereby ensuring the reset effect of the tripping electromagnet. At the same time, under the normal closing operation of the circuit breaker, the internal structure of the circuit breaker mechanism can rotate the spline dial forward and drive the reset member to swing to open a certain angle, which is conducive to the later closing of the tripping electromagnet or the original closing mechanism of the circuit breaker mechanism. The tripping device can perform the tripping operation when the self-powered microcomputer protection with low-power and low-voltage tripping signal output cannot use the original tripping circuit and structure. It is easy to install and simplifies the circuit and structural design. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] To more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the accompanying drawings required for the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can also be obtained based on these drawings.

[0022] Figure 1 It is a three-dimensional structure schematic diagram of the circuit breaker opening device provided by the embodiment of the present utility model;

[0023] Figure 2 It is a rear structure schematic diagram of the circuit breaker opening device provided by the embodiment of the present utility model in the closed state;

[0024] Figure 3 It is a partial sectional structure diagram of the circuit breaker opening device provided by the embodiment of the present utility model in the closed state;

[0025] Figure 4 It is a partial sectional structure diagram of the circuit breaker opening device provided by the embodiment of the present utility model in the open state.

[0026] Reference numerals:

[0027] Circuit breaker mechanism 10, spline shaft 11, opening half shaft 12, opening long connecting column 13, limiting ring 14, limiting column 15, mounting plate 20, spline dial 30, opening electromagnet 40, reset member 50, limiting arc-shaped groove 51, push rod 52, hook head 53, return spring 60, tripping transmission member 70, metal shim 71, insulating seat 72. Specific embodiments

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model. Hereinafter, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the embodiments of the present disclosure, unless otherwise specified, the meaning of "a plurality" is two or more.

[0029] Refer to Figures 1 to 4The circuit breaker tripping device shown in the figure is installed on the circuit breaker mechanism 10, including a mounting plate 20, a spline thumbwheel 30, a tripping electromagnet 40, a reset member 50, a reset spring 60 and a trip transmission member 70. The mounting plate 20 is installed on the circuit breaker mechanism 10; the spline thumbwheel 30 is installed on the spline shaft 11 of the circuit breaker mechanism 10 and can rotate with the spline shaft 11; the tripping electromagnet 40 is installed on the mounting plate 20, and the middle part of the reset member 50 is rotatably installed on the circuit breaker mechanism 10; the reset member 50 One end of the reset spring 60 can cooperate with the driving end of the opening electromagnet 40, and the other end can cooperate with the spline thumbwheel 30; one end of the reset spring 60 is connected to the end of the reset member 50 away from the spline thumbwheel 30, and the other end is connected to the mounting plate 20; the trip transmission member 70 is installed on the opening half-shaft 12 of the circuit breaker mechanism 10; the driving end of the opening electromagnet 40 can push the trip transmission member 70 to drive the opening half-shaft 12 to rotate, and the opening half-shaft 12 can push the trip transmission member 70 outward to open the circuit breaker mechanism 10 after closing.

[0030] Among them, the circuit breaker mechanism 10 is an existing circuit breaker. The present application does not describe its specific structure in detail. At the same time, its structure is given in the attached drawings. The specific operating principle is not described in detail in the present application. Its specific structure can refer to the prior art. The reset member 50 is hook-shaped in the present application. In some possible implementation methods, the reset member 50 is provided with a hook head 53 that cooperates with the opening electromagnet 40, so as to provide space for the action of other structures. The mounting plate 20 is installed on the opening support plate of the circuit breaker mechanism 10 in the present application. Such a design is conducive to separate disassembly and assembly in the later stage without affecting the original structure of the circuit breaker mechanism 10.

[0031] In some possible implementations, in order to facilitate the installation of the reset spring 60, a mounting structure 80 is provided on one end of the mounting plate 20 and the reset member 50, and the two ends of the reset spring 60 are respectively connected to the two mounting structures 80. The mounting structure 80 is a bolt structure, which is convenient for adjustment and is also conducive to hooking the reset spring 60.

[0032] In the above-mentioned embodiment, in order to facilitate the driving end of the opening electromagnet 40 to drive, so as to drive the opening half shaft 12 to rotate through the trip transmission member 70 to open the gate, the trip transmission member 70 includes a metal baffle 71 and an insulating seat 72, the metal baffle 71 is installed on the insulating seat 72, the insulating seat 72 is mounted on the opening half shaft 12 and rotates coaxially with the opening half shaft 12, and the metal baffle 71 can cooperate with the driving end of the opening electromagnet 40. Among them, the metal baffle 71 and the reset member 50 do not interfere with each other, and the two are staggered in space. Of course, in some embodiments, the driving end of the opening electromagnet 40 is large enough to accommodate the contact requirements of the metal baffle 71 and the reset member 50 at the same time.

[0033] In the above-mentioned improved embodiment, the metal baffle 71 and the corresponding end of the reset member 50 are staggered and both can cooperate with the driving end of the opening electromagnet 40 .

[0034] In the above embodiment, the opening electromagnet 40 is a holding electromagnet, and its installation direction is perpendicular or approximately perpendicular to the action end of the trip transmission member 70. This is conducive to improving the driving force of the opening electromagnet 40 on the metal baffle 71.

[0035] See also Figures 1 to 3 In order to facilitate installation, the circuit breaker mechanism 10 is provided with a long disconnecting connection column 13, and the reset member 50 can be rotatably installed on the long disconnecting connection column 13. Among them, a hole is opened on the reset member 50, and the long disconnecting connection column 13 is movably penetrated in the hole, and the two will not rotate synchronously.

[0036] In some embodiments, in order to prevent the reset member 50 from swinging, a limit ring 14 is provided on both sides of the reset member 50 of the long connecting column 13 of the disconnector, wherein the limit ring 14 is fixed to the long connecting column 13 of the disconnector by screws, and a swinging space is formed between the two limit rings 14 for the reset member 50 to swing.

[0037] In some possible implementations, in order to prevent the reset member 50 from swinging too much and causing it to be difficult to reset or being stuck in the reset, a limit column 15 is provided on the circuit breaker mechanism 10, and a limit arc groove 51 cooperating with the limit column 15 is provided on the reset member 50. In fact, the position of the limit column 15 installed on the circuit breaker mechanism 10 can be adjusted. Such a design is conducive to the limit column 15 adapting to the limit arc groove 51, reducing the wear between the two, and is also conducive to the later disassembly and assembly work. It should be noted that an arc-shaped mounting hole is opened on the opening support plate of the circuit breaker mechanism 10, and the limit column 15 is slidably installed in the mounting hole and locked by a nut.

[0038] See also Figure 1 and Figure 4 In order to better cooperate with the drive, in one embodiment of the present application, a push rod 52 is provided at one end of the reset member 50 that cooperates with the spline dial wheel 30, and the push rod 52 can cooperate and abut with the toggle rod on the spline dial wheel 30. In fact, the push rod 52 is a detachable structure, such as a bolt or a screw, which is convenient for later replacement. In addition, in actual use, one side of the spline dial wheel 30 is raised, which is conducive to installation and fixation. During the opening and closing process, the spline dial wheel 30 rotates a certain angle with the spline shaft 11, so that the reset member 50 is rotated in the vertical direction under the action of the lever.

[0039] The opening device of this circuit breaker is improved on the existing circuit breaker mechanism 10. By designing a spline pulley 30 to be connected with the spline shaft 11 of the existing circuit breaker mechanism 10, and then the spline pulley 30 is adapted to the reset part 50. In the opening state, the tripping transmission part 70 can be driven to swing by the opening electromagnet 40, and then drive the opening half shaft 12 to rotate so that the circuit breaker mechanism 10 opens; after the closing buckle inside the circuit breaker mechanism 10 acts to trip, when the circuit breaker mechanism 10 opens under the internal spring pressure, the spline shaft 11 rotates, which is clockwise rotation in this application. At this time, the reset part 50 swings counterclockwise under the pulling action of the reset spring 60 to impact and drive the action end of the opening electromagnet 40 to reset upward, ensuring the reset effect of the opening electromagnet 40.

[0040] Under the normal closing operation of the circuit breaker, after the internal energy storage spring of the circuit breaker mechanism 10 is released, the internal energy storage shaft cam can force the spline shaft 11 to rotate, which is counterclockwise in this application. The spline pulley 30 rotates forward, that is, rotates counterclockwise and can drive the reset part 50 to swing clockwise to open a certain angle, which is beneficial to the closing of the original closing mechanism of the later opening electromagnet 40 or the circuit breaker mechanism 10. This opening device can perform opening operations when the self-powered microcomputer protection with low-power and low-voltage opening signal output cannot use the original opening circuit and structure. It is easy to install and simplifies the circuit and structure design.

[0041] The above is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions within the technical scope disclosed by the present utility model should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claimed rights.

Claims

1. A circuit breaker tripping device, mounted on a circuit breaker mechanism, characterized in that: include: a mounting plate mounted on the circuit breaker mechanism; A spline thumbwheel, which is mounted on the spline shaft of the circuit breaker mechanism and can rotate along with the spline shaft; The opening electromagnet is mounted on the mounting plate. A reset member, the middle part of which is rotatably mounted on the circuit breaker mechanism; one end of the reset member can cooperate with the driving end of the opening electromagnet, and the other end can cooperate with the spline thumbwheel; A return spring, one end of which is connected to an end of the return member away from the spline thumbwheel, and the other end of which is connected to the mounting plate; A trip transmission member, which is mounted on the opening half shaft of the circuit breaker mechanism; Among them, the driving end of the opening electromagnet can push the trip transmission member to drive the opening half-shaft to rotate, and the opening half-shaft can push the trip transmission member outward to open the circuit breaker mechanism after the circuit breaker mechanism is closed.

2. A circuit breaker opening device according to claim 1, characterized in that: The mounting plate and the reset member are both provided with mounting structures on one end corresponding to the other, and the two ends of the reset spring are respectively connected to the two mounting structures.

3. A circuit breaker opening device according to claim 1, characterized in that: The trip transmission member includes a metal baffle and an insulating seat, wherein the metal baffle is mounted on the insulating seat, the insulating seat is sleeved on the opening half-shaft and rotates coaxially with the opening half-shaft, and the metal baffle can cooperate with the driving end of the opening electromagnet.

4. A circuit breaker opening device according to claim 3, characterized in that: The metal baffle and one end corresponding to the reset member are staggered and can cooperate with the driving end of the opening electromagnet.

5. A circuit breaker opening device according to claim 1, characterized in that: The circuit breaker mechanism is provided with a long disconnecting connecting column, and the reset member is rotatably mounted on the long disconnecting connecting column.

6. A circuit breaker opening device according to claim 5, characterized in that: The switch-off long connecting column is provided with limit rings on both sides of the reset member.

7. A circuit breaker opening device according to claim 1, characterized in that: The circuit breaker mechanism is provided with a limiting column, and the reset member is provided with a limiting arc groove matched with the limiting column.

8. A circuit breaker opening device according to claim 1, characterized in that: One end of the reset member that cooperates with the spline thumbwheel is provided with a push rod, and the push rod can cooperate and abut with the toggle rod on the spline thumbwheel.

9. A circuit breaker opening device according to claim 1, characterized in that: The reset member is provided with a hook head which cooperates with the opening electromagnet.

10. A circuit breaker opening device according to claim 1, characterized in that: The opening electromagnet is a holding electromagnet, and its installation direction is perpendicular or approximately perpendicular to the action end of the tripping transmission member.

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