Circuit breaker operating mechanism with protection assembly

Abstract

The utility model discloses a breaker operating mechanism with a protection assembly, which comprises a first mounting plate, a second mounting plate and a third mounting plate which are sequentially connected through connecting columns, an auxiliary switch is mounted on the first mounting plate, and a spring energy storage mechanism is mounted between the second mounting plate and the third mounting plate. An output shaft is arranged on the first mounting plate and the second mounting plate in a penetrating mode, the output end of the auxiliary switch is in linkage connection with the output shaft through a connecting rod assembly, and the output shaft is in linkage connection with the spring energy storage mechanism through a crank arm. The motor further comprises a protection assembly, the protection assembly comprises a protection cover, and the protection cover is arranged between the second installation plate and the third installation plate and covers the connecting lever and the connecting column located on the side of the connecting lever. According to the utility model, the protective assembly is additionally arranged to prevent the hand of a worker from being injured by the crank arm due to accidental operation, and the safety is higher.

Description

TECHNICAL FIELD

[0001] The utility model relates to switch technical field, especially a circuit breaker operating mechanism with protection assembly. BACKGROUND

[0002] The auxiliary switch in the circuit breaker operating mechanism can be used for remote automatic tripping and closing, specifically, the rack of the operating mechanism is connected by a first mounting plate, a second mounting plate and a third mounting plate through connecting columns, the auxiliary switch is arranged on the first mounting plate, the spring energy storage mechanism is installed between the second mounting plate and the third mounting plate, the auxiliary switch is linked with the operating lever through the connecting rod assembly, and the operating lever is further connected with the spring energy storage mechanism through the crank arm, when the auxiliary switch remotely controls the operating mechanism to close, the spring energy storage mechanism is compressed and stores energy, during maintenance or debugging, the maintenance worker sometimes lifts the connecting column located on the side of the crank arm, and the circuit breaker operating mechanism is carried to another place, however, when the spring energy storage mechanism is in the compressed and stored energy state, accidental operation or carrying the operating mechanism easily leads to the spring energy storage mechanism releasing energy and recovering, and the crank arm is quickly hit back to the original position, at this time, the hand of the worker is hit by the crank arm, and a safety accident is caused. SUMMARY

[0003] The utility model discloses a kind of circuit breaker operating mechanisms with protection assembly, and the utility model prevents the situation that the hand of worker is hit by crank arm by adding protection assembly to prevent accidental operation, and higher safety.

[0004] To achieve the above object, the utility model provides the following technical scheme: a circuit breaker operating mechanism with protection assembly, including first mounting plate, second mounting plate and third mounting plate connected in sequence by connecting column, the first mounting plate is installed with auxiliary switch, spring energy storage mechanism is installed between the second mounting plate and the third mounting plate, output shaft is arranged on the first mounting plate and the second mounting plate, the auxiliary switch is linked with output shaft through connecting rod assembly, and output shaft is linked with spring energy storage mechanism through crank arm;It also includes protection assembly, and the protection assembly includes protective cover, and the protective cover is arranged between second mounting plate and third mounting plate and covers the crank arm and the connecting column located on the side of crank arm.

[0005] By adopting the above technical scheme, the protective cover is arranged between second mounting plate and third mounting plate, the crank arm and the connecting column located on the side of crank arm are covered, the situation that the worker is hit by crank arm when grabbing the connecting column at this position can be effectively avoided, so as to improve the safety of the operating mechanism.

[0006] The utility model further sets up, the protective cover includes first panel and second panel, first panel and second panel form a L shape structure, the protective cover sets up between second mounting panel and third mounting panel's corner.

[0007] By adopting the above technical scheme, the structure is simple and reliable, convenient to process, two faces can prevent the staff from grabbing the connecting column at the position, and the protective cover can effectively prevent the staff from being hit.

[0008] The utility model further sets up, one side of first panel close to first mounting panel is equipped with connecting plate, connecting plate extends downward and is connected to one side of second mounting panel close to first mounting panel.

[0009] By adopting the above technical scheme, the protective cover is hung on the second mounting panel to connect the connecting plate and the second mounting plate, and the operation is very convenient.

[0010] The utility model further sets up, connecting plate is detachably connected together with second mounting plate through fastener.

[0011] By adopting the above technical scheme, the detachable design of the protective cover is convenient for the installation in the early stage and the dismounting and maintenance operation in the later stage.

[0012] The utility model further sets up, connecting plate and first mounting panel are equipped with height extension part, make first panel higher than second mounting panel and third mounting panel, and the length of connecting plate is less than the length of height extension part.

[0013] By adopting the above technical scheme, the first panel is designed to be higher, can play the role of giving way, prevents the elbow swing and hits the first panel.

[0014] The utility model further sets up, one side of second panel away from first panel is equipped with limit plate, and the limit plate is in abutment with the bottom side of the connecting column on the side of the elbow.

[0015] By adopting the above technical scheme, it not only can play the role of positioning, is convenient for the accurate connection of connecting plate and second mounting plate, and has one more supporting point, can improve the stability of protective cover installation.

[0016] The utility model further sets up, first panel, second panel, connecting plate, height extension part and limit plate are integral type structure.

[0017] By adopting the above technical scheme, the processing is very convenient, and the structural strength is high.

[0018] The utility model further sets up, the protective cover is connected with second mounting plate, and is equipped with the gap of giving way between the protective cover and third mounting plate.

[0019] By adopting the technical scheme, not only is the dismounting operation facilitated, but also the position of the crank arm can be observed by using the giving gap, and the state of the operating mechanism is more convenient to judge during maintenance. BRIEF DESCRIPTION OF DRAWINGS

[0020] Fig. 1 Structure schematic view of a circuit breaker operating mechanism without a protection assembly;

[0021] Fig. 2 Structure schematic view of a circuit breaker operating mechanism with a protection assembly from a first perspective;

[0022] Fig. 3 Structure schematic view of a circuit breaker operating mechanism with a protection assembly from a first perspective;

[0023] Fig. 4 Structure schematic view of a protection assembly of the utility model.

[0024] In the figure: 1, connecting column; 2, first mounting plate; 3, second mounting plate; 4, third mounting plate; 5, auxiliary switch; 6, spring energy storage mechanism; 7, output shaft; 8, connecting rod assembly; 9, crank arm; 10, protective cover; 11, first panel; 12, second panel; 13, connecting plate; 14, height extension; 15, limiting plate; 16, giving gap. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0026] Embodiment: as shown in the accompanying drawings Figs. 1-4The illustrated circuit breaker operating mechanism with a protection assembly comprises a first mounting plate 2, a second mounting plate 3 and a third mounting plate 4 connected in sequence through a connecting column 1, specifically, the connecting column 1 is provided with threaded sections at both ends, the threaded sections pass through the round holes of the corresponding mounting plates, and the mounting plates are locked on the limiting steps of the connecting column 1 through nuts, an auxiliary switch 5 is mounted on the first mounting plate 2, a spring energy storage mechanism 6 is mounted between the second mounting plate 3 and the third mounting plate 4, an output shaft 7 is provided through the first mounting plate 2 and the second mounting plate 3, the auxiliary switch 5 is connected with the output shaft 7 through a connecting rod assembly 8, and the output shaft 7 is connected with the spring energy storage mechanism 6 through a crank arm 9; the circuit breaker operating mechanism further comprises a protection assembly, the protection assembly comprises a protective cover 10, and the protective cover 10 is arranged between the second mounting plate 3 and the third mounting plate 4 and covers the crank arm 9 and the connecting column 1 located on the side of the crank arm 9. The protective cover 10 is arranged between the second mounting plate 3 and the third mounting plate 4 and covers the crank arm 9 and the connecting column 1 located on the side of the crank arm 9, so that the situation that a worker is injured by the crank arm 9 when grabbing the connecting column 1 at this position can be effectively avoided, thereby improving the safety of the operating mechanism.

[0027] As shown in the accompanying drawings, Figs. 2-4 The protective cover 10 comprises a first panel 11 and a second panel 12, the first panel 11 and the second panel 12 form an L-shaped structure, and the protective cover 10 is arranged at the corner between the second mounting plate 3 and the third mounting plate 4. Its structure is simple and reliable, easy to process, and two panels can prevent the worker from grabbing the connecting column 1 at this position, which can effectively prevent injury.

[0028] As shown in the accompanying drawings, Figs. 2-4 The first panel 11 is provided with a connecting plate 13 at an edge close to the first mounting plate 2, the connecting plate 13 extends downward and is connected to one side of the second mounting plate 3 close to the first mounting plate 2, that is, the connecting plate 13 is perpendicular to the first panel 11 in this embodiment. The protective cover 10 is hung on the second mounting plate 3 to connect the connecting plate 13 and the second mounting plate 3, which is very convenient to operate.

[0029] The connecting plate 13 is detachably connected with the second mounting plate 3 through fasteners, and the fasteners are standard parts, which can be screws. The detachable design of the protective cover 10 facilitates the installation in the early stage and the disassembly and maintenance operation in the later stage.

[0030] As shown in the accompanying drawings, Figs. 2-4 The connecting plate 13 and the first mounting plate 2 are provided with a height extension 14, so that the first panel 11 is higher than the second mounting plate 3 and the third mounting plate 4, and the length of the connecting plate 13 is less than the length of the height extension 14. The first panel 11 is designed to be higher, which can play a role in giving way and prevent the crank arm 9 from hitting the first panel 11 when swinging.

[0031] As attached Figs. 2-4 As shown, a limiting plate 15 is provided at one edge of the second panel 12 away from the first panel 11. The limiting plate 15 abuts against the bottom side of the connecting column 1 located on the side of the crank arm 9. It not only serves a positioning function, facilitating the accurate connection between the connecting plate 13 and the second mounting plate 3, but also provides an additional support point, which can improve the stability of the protective cover 10 installation.

[0032] The first panel 11, the second panel 12, the connecting plate 13, the height extension 14, and the limiting plate 15 are integrated into a single structure. The protective cover 10 is made of stainless steel plate cut and bent according to the design dimensions, or it can be made of plastic injection molding. This structure is very easy to process and has high structural strength.

[0033] As attached Figs. 2-4 As shown, the protective cover 10 is connected to the second mounting plate 3, and a clearance 16 is provided between the protective cover 10 and the third mounting plate 4. This design not only facilitates disassembly and assembly operations, but also allows the position of the crank arm 9 to be observed using the clearance 16, making it easier to determine the status of the operating mechanism during maintenance.

Claims

1. A circuit breaker operating mechanism with a protection assembly, comprising a first mounting plate (2), a second mounting plate (3) and a third mounting plate (4) connected in sequence through connecting columns (1), an auxiliary switch (5) being mounted on the first mounting plate (2), a spring energy storage mechanism (6) being mounted between the second mounting plate (3) and the third mounting plate (4), an output shaft (7) being provided through the first mounting plate (2) and the second mounting plate (3), the auxiliary switch (5) being connected with the output shaft (7) through a connecting rod assembly (8), the output shaft (7) being connected with the spring energy storage mechanism (6) through a crank arm (9); characterized in that: The protective assembly comprises a protective cover (10) arranged between the second mounting plate (3) and the third mounting plate (4) and covering the connecting column (1) beside the toggle arm (9).

2. The circuit breaker operating mechanism with shield assembly of claim 1, wherein: The protective cover (10) comprises a first panel (11) and a second panel (12) forming an L-shaped structure, and the protective cover (10) is arranged at the corner between the second mounting plate (3) and the third mounting plate (4).

3. The circuit breaker operating mechanism with shield assembly of claim 2, wherein: The first panel (11) is provided with a connecting plate (13) near an edge of the first mounting plate (2), and the connecting plate (13) extends downward and is connected to a side of the second mounting plate (3) near the first mounting plate (2).

4. The circuit breaker operating mechanism with shield assembly of claim 3, wherein: The connecting plate (13) is detachably connected to the second mounting plate (3) by fasteners.

5. The circuit breaker operating mechanism with shield assembly of claim 3, wherein: The connecting plate (13) is provided with a height extension (14) between the connecting plate (13) and the first mounting plate (2), so that the first panel (11) is higher than the second mounting plate (3) and the third mounting plate (4), and the length of the connecting plate (13) is less than the length of the height extension (14).

6. The circuit breaker operating mechanism with shield assembly of claim 5, wherein: The second panel (12) is provided with a limiting plate (15) away from an edge of the first panel (11), and the limiting plate (15) abuts against the bottom side of the connecting column (1) beside the toggle arm (9).

7. The circuit breaker operating mechanism with shield assembly of claim 6, wherein: The first panel (11), the second panel (12), the connecting plate (13), the height extension (14) and the limiting plate (15) are of an integrated structure.

8. The circuit breaker operating mechanism with shield assembly of claim 1, wherein: The protective cover (10) is connected to the second mounting plate (3), and a gap (16) is arranged between the protective cover (10) and the third mounting plate (4).

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