Anti-misoperation locking device of vacuum circuit breaker

Abstract

The utility model provides an anti-misoperation locking device of a vacuum circuit breaker, comprising: a locking member comprising a rotating shaft rotatably installed on a support and a locking rod vertically fixed on the rotating shaft, the locking rod having a locking state abutting against an operation handle on a circuit breaker body to prevent the rotation of the operation handle, and an intermediate state axially moving along the rotating shaft, the unlocking state rotates relative to the middle state and is separated from the operation handle; and the bracket is fixed on the circuit breaker body, and a first track groove for the lock rod to move along the axial direction of the rotating shaft and a second track groove which is in bent communication with the first track groove and is used for the lock rod to rotate are formed on the bracket. When the lock rod is located in the second track groove, the lock rod is in an unlocking state separated from the operation handle. When locking is needed, the locking rod rotates by a certain angle along the second track groove and then moves along the first track groove, so that the locking rod is switched to be in the locking state that the locking rod abuts against the operation handle in a matched mode, misoperation of the operation handle is prevented, and safety and reliability are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit breakers, in particular to an anti-misoperation locking device for a vacuum circuit breaker. Background Art

[0002] The most widely used outdoor vacuum circuit breaker currently adopts a three-phase pillar structure. This type of outdoor vacuum circuit breaker assembles the vacuum interrupter, main conductive circuit, insulation support and other components together to form a solid-sealed pole. When inspecting the line, the maintenance personnel need to first open the upper circuit breaker to disconnect the current, and then inspect the lower circuit breaker. If someone mistakenly closes the upper circuit breaker, the lower maintenance personnel may be electrocuted and cause personal safety accidents; or when the maintenance personnel are working with power on, they are required not to open the circuit breaker. If someone mistakenly opens the circuit breaker, it will affect the normal operation of the equipment. Utility Model Content

[0003] Therefore, the technical problem to be solved by the present invention is to overcome the defect of easy misoperation of the circuit breaker in the prior art, thereby providing an anti-misoperation locking device for a vacuum circuit breaker with high safety and reliability.

[0004] To this end, the utility model provides an anti-misoperation locking device for a vacuum circuit breaker, comprising a locking member and a bracket, the locking member comprising a rotating shaft rotatably mounted on the bracket, and a locking rod vertically fixed on the rotating shaft, the locking rod having a locking state in which the locking rod abuts against an operating handle on a circuit breaker body to prevent the operating handle from rotating, an intermediate state in which the locking rod moves axially along the rotating shaft, and an unlocking state in which the locking rod rotates relative to the intermediate state and is separated from the operating handle; the bracket is fixed on the circuit breaker body, and the bracket is formed with a first track groove for the locking rod to move axially along the rotating shaft, and a second track groove bent and connected to the first track groove for the locking rod to rotate.

[0005] The bracket includes a bottom plate, a U-shaped mounting plate and a top plate, the bottom plate is fixed on the circuit breaker body; the U-shaped mounting plate is vertically arranged on the bottom plate, and includes a first side plate, and a second side plate and a third side plate respectively arranged on both sides of the first side plate, the first side plate is formed with the second track groove, and the second side plate and the third side plate are respectively formed with first through holes for correspondingly passing through the two ends of the rotating shaft; the top plate is arranged on the top of the first side plate and is arranged parallel to the bottom plate, the top plate is formed with the first track groove, and the first track groove extends from the second track groove in a direction close to the second side plate.

[0006] Also included is an elastic member for keeping the locking rod in the locking state.

[0007] The elastic member is a spring sleeved on the rotating shaft, one end of the spring abuts against the locking rod, and the other end of the spring abuts against the inner wall of the third side plate.

[0008] The top of the first side plate is integrally bent and connected to the top plate, and the two sides thereof are integrally bent and connected to the second side plate and the third side plate respectively.

[0009] A plug-in structure is provided between the first side plate and the bottom plate, and the plug-in structure comprises a plug-in hole provided on the bottom plate, and a plug-in block provided at the bottom of the first side plate and interference-fitted with the plug-in hole.

[0010] A plurality of studs are welded on the circuit breaker body, and a second through hole corresponding to the plurality of studs is provided on the bottom plate.

[0011] The technical solution of the utility model has the following advantages:

[0012] 1. The utility model provides an anti-misoperation locking device for a vacuum circuit breaker, comprising a bracket and a locking member, the locking member comprising a rotating shaft rotatably mounted on the bracket, and a locking rod vertically fixed on the rotating shaft, the locking rod having a locking state in which the operating handle on the circuit breaker body is abutted against the operating handle to prevent the operating handle from rotating, an intermediate state in which the locking rod is axially moved along the rotating shaft, and an unlocked state in which the locking rod is rotated relative to the intermediate state and separated from the operating handle, the bracket being fixed on the circuit breaker body, and having a first track groove formed thereon for the locking rod to move axially along the rotating shaft, and a second track groove bent and connected to the first track groove for the locking rod to rotate, wherein when the locking rod is located in the second track groove, it is in an unlocked state separated from the operating handle; when locking is required, the locking rod is rotated along the second track groove by a certain angle and then moves along the first track groove, thereby switching to a locked state in which the locking rod cooperates with the operating handle, thereby preventing misoperation of the operating handle and improving safety and reliability.

[0013] 2. The anti-misoperation locking device for the vacuum circuit breaker provided by the utility model is a spring sleeved on the rotating shaft, one end of the spring is against the locking rod, and the other end is against the inner wall of the third side plate. The elastic force of the elastic member toward the locking rod keeps it in the locked state, that is, a certain external force needs to be applied to overcome the elastic force of the elastic member in order to switch the locking rod to the unlocked state, thereby further improving reliability.

[0014] 3. In the anti-misoperation locking device for vacuum circuit breaker provided by the utility model, the top of the first side plate is integrally bent and connected to the top plate, and its two sides are integrally bent and connected to the second side plate and the third side plate respectively, so that the structure is simpler and convenient to process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a structural schematic diagram of the vacuum circuit breaker of the utility model (the anti-misoperation locking device is in the unlocked state);

[0017] Figure 2 A three-dimensional diagram of the locking device in the unlocked state to prevent misoperation;

[0018] Figure 3 Schematic diagram of the explosion structure of the locking device to prevent misoperation;

[0019] Figure 4 It is a structural schematic diagram of a vacuum circuit breaker (the anti-misoperation locking device is in a locked state);

[0020] Figure 5 for Figure 4 A schematic diagram of the enlarged structure of part A;

[0021] Figure 6 A three-dimensional diagram of the locking device in a locked state to prevent misoperation.

[0022] Explanation of the reference numerals: 1. bracket; 2. circuit breaker body; 3. locking member; 4. rotating shaft; 5. locking rod; 6. operating handle; 7. first track groove; 8. second track groove; 9. bottom plate; 10. U-shaped mounting plate; 11. first side plate; 12. second side plate; 13. third side plate; 14. first through hole; 15. top plate; 16. elastic member; 17. plug hole; 18. plug block; 19. stud; 20. second through hole; 21. opening handle; 22. closing handle; 23. energy storage handle. DETAILED DESCRIPTION

[0023] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0027] Example

[0028] This embodiment provides a vacuum circuit breaker anti-misoperation locking device, such as Figure 1 and Figure 4 As shown, it includes a locking member 3 and a bracket 1.

[0029] The locking member 3 comprises a rotating shaft 4 rotatably mounted on the bracket 1, and a locking rod 5 vertically fixed on the rotating shaft 4, wherein the locking rod 5 has a locking state (such as a state in which the operating handle 6 on the circuit breaker body 2 is abutted against the operating handle 6 on the circuit breaker body 2 to prevent the operating handle 6 from rotating) Figure 5 and Figure 6 ), an intermediate state of axial movement along the rotating shaft 4, and an unlocked state of rotation relative to the intermediate state and separation from the operating handle 6 (as shown in FIG. Figure 2 shown).

[0030] The bracket 1 is fixed on the circuit breaker body 2, such as Figure 2 As shown, the bracket 1 is formed with a first track groove 7 for the locking rod 5 to move axially along the rotating shaft 4, and a second track groove 8 that is bent and connected to the first track groove 7 and is for the locking rod 5 to rotate. Figure 3As shown, the bracket 1 includes: a bottom plate 9, fixed to the circuit breaker body 2, and provided with second through holes 20 corresponding to the plurality of studs 19 on the circuit breaker body 2; a U-shaped mounting plate 10, vertically arranged on the bottom plate 9, comprising a first side plate 11, and a second side plate 12 and a third side plate 13 respectively arranged on both sides of the first side plate 11, the first side plate 11 is formed with the second track groove 8, and the second side plate 12 and the third side plate 13 are respectively formed with first through holes 14 for the two ends of the rotating shaft 4 to pass through; a top plate 15, arranged on the top of the first side plate 11, and arranged parallel to the bottom plate 9, and the top plate 15 is formed with the first track groove 7, and the first track groove 7 extends from the second track groove 8 close to the second side plate 12. The top of the first side panel 11 is integrally bent and connected to the top panel 15, and the two sides thereof are respectively integrally bent and connected to the second side panel 12 and the third side panel 13. A plug-in structure is provided between the first side panel 11 and the bottom panel 9, and the plug-in structure includes a plug hole 17 provided on the bottom panel 9, and an insert block 18 provided at the bottom of the first side panel 11 and interference fit with the plug hole 17.

[0031] The elastic member 16 is used to keep the locking rod 5 in the locking state. In the present embodiment, the elastic member 16 is a spring sleeved on the rotating shaft 4 , one end of the spring abuts against the locking rod 5 , and the other end abuts against the inner wall of the third side plate 13 .

[0032] In this embodiment, the anti-misoperation locking device is arranged on the side of the opening handle 21 of the operating handle 6 to prevent accidental opening during live operation; it should be noted that, for those skilled in the art, the anti-misoperation locking device can also be arranged on the side of the closing handle 22 or the energy storage handle 23 to prevent accidental closing or accidental energy storage.

[0033] The working principle of the anti-misoperation locking device of the utility model is as follows:

[0034] like Figure 1 and Figure 2 As shown in FIG. 1 , the anti-misoperation locking device is in the unlocked state, and the lock rod 5 is at the bottom of the second track groove 8. When it is necessary to switch to the locked state, the lock rod 5 is pushed upward, the lock rod 5 rotates around the rotating shaft 4, and then the lock rod 5 slides leftward along the first track groove 7 under the action of the elastic member 16. Figure 4 and Figure 5 location.

[0035] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.

Claims

1. A locking device for preventing misoperation of a vacuum circuit breaker, characterized in that: include: The locking member (3) comprises a rotating shaft (4) rotatably mounted on the bracket (1), and a locking rod (5) vertically fixed on the rotating shaft (4), wherein the locking rod (5) has a locked state in which it abuts against an operating handle (6) on the circuit breaker body (2) to prevent the operating handle from rotating, an intermediate state in which it moves axially along the rotating shaft (4), and an unlocked state in which it rotates relative to the intermediate state and is separated from the operating handle (6); The bracket (1) is fixed on the circuit breaker body (2), and the bracket (1) is formed with a first track groove (7) for the locking rod (5) to move axially along the rotating shaft (4), and a second track groove (8) bent and connected to the first track groove (7) for the locking rod (5) to rotate.

2. The anti-misoperation locking device according to claim 1, characterized in that: The support (1) comprises: A bottom plate (9) fixed on the circuit breaker body (2); A U-shaped mounting plate (10) is vertically arranged on the bottom plate (9), comprising a first side plate (11), and a second side plate (12) and a third side plate (13) respectively arranged on both sides of the first side plate (11), the first side plate (11) being formed with the second track groove (8), and the second side plate (12) and the third side plate (13) being respectively formed with first through holes (14) for the two ends of the rotating shaft (4) to pass through; A top plate (15) is arranged on the top of the first side plate (11) and is arranged parallel to the bottom plate (9). The top plate (15) is formed with the first track groove (7), and the first track groove (7) extends from the second track groove (8) in a direction close to the second side plate (12).

3. The anti-misoperation locking device according to claim 2, characterized in that: It also includes an elastic member (16) for keeping the locking rod (5) in the locked state.

4. The anti-misoperation locking device according to claim 3, characterized in that: The elastic member (16) is a spring sleeved on the rotating shaft (4), one end of the spring abuts against the locking rod (5), and the other end abuts against the inner wall of the third side plate (13).

5. The anti-misoperation locking device according to any one of claims 2 to 4, characterized in that: The top of the first side panel (11) is integrally bent and connected to the top panel (15), and the two sides thereof are integrally bent and connected to the second side panel (12) and the third side panel (13) respectively.

6. The anti-misoperation locking device according to claim 2, characterized in that: A plug-in structure is provided between the first side plate (11) and the bottom plate (9), the plug-in structure comprising a plug hole (17) provided on the bottom plate (9), and an insert block (18) provided at the bottom of the first side plate (11) and interference fit with the plug hole (17).

7. The anti-misoperation locking device according to claim 2, characterized in that: A plurality of studs (19) are welded on the circuit breaker body (2), and a second through hole (20) corresponding to the plurality of studs (19) is provided on the bottom plate (9).

Images