Interlocking mechanism of operating mechanism

Abstract

The utility model relates to an interlocking mechanism of an operating mechanism, and belongs to the technical field of electrical equipment. The operating shaft is rotationally arranged on the shell, one end of the operating shaft is provided with an operating part, and the other end of the operating shaft is connected with an operating mechanism of the isolating switch; the stop plate is arranged on the operation shaft; the fixed limiting piece is arranged on the shell; the movable limiting piece is rotationally arranged on the shell; when the circuit breaker is switched off, the movable limiting piece is located at a first position, and the movable limiting piece and the stop plate are arranged in a mutual non-interference mode; when the circuit breaker is switched on, the movable limiting piece is located at the second position, and the stop plate is clamped between the fixed limiting piece and the movable limiting piece. The operating mechanism of the isolating switch can be effectively prevented from being mistakenly operated when the circuit breaker is switched on, the number of parts is small, the structure is simple, the occupied space is small, and miniaturization of the circuit breaker is facilitated.

Description

Technical Field

[0001] The present application relates to the field of electrical equipment, and in particular to an interlocking mechanism of an operating mechanism. Background Art

[0002] Traditionally, pole-mounted circuit breakers and disconnect switches are designed as separate electrical components. To improve the operational reliability of outdoor equipment, the disconnect switch is being considered as part of the pole-mounted circuit breaker housing, achieving maintenance-free operation. To ensure the safety of both the product and operators, the operating mechanisms of the circuit breaker and disconnect switch must be interlocked to prevent accidental operation of the disconnect switch when the circuit breaker is closed.

[0003] Existing technologies use electronic control to achieve interlocking, which has a simple structure but poor reliability. Currently, specialized mechanical interlocking mechanisms are also available for circuit breaker and disconnector combination products, but these are complex, require numerous components, and occupy a large space. Furthermore, these interlocking mechanisms are relatively unreliable during use, making them prone to misoperation of the disconnector, compromising electrical safety and causing unnecessary accidents. Utility Model Content

[0004] In order to simplify the interlocking structure of the circuit breaker and effectively prevent misoperation of the operating mechanism of the disconnector, the present application provides an interlocking mechanism of the operating mechanism.

[0005] This application provides an interlocking mechanism for an operating mechanism, which adopts the following technical solution:

[0006] An interlocking mechanism of an operating mechanism, comprising:

[0007] case;

[0008] An operating shaft is rotatably mounted on the housing, one end of the operating shaft is provided with an operating portion, and the other end is used to connect with the operating mechanism of the disconnector;

[0009] A stop plate, provided on the operating shaft;

[0010] A fixed limiting member is provided on the housing;

[0011] A movable limiting member, rotatably disposed on the housing;

[0012] When the circuit breaker is opened, the movable limiting member is in the first position and is arranged so as not to interfere with the stop plate;

[0013] When the circuit breaker is closed, the movable limiting member is in the second position, and the stop plate is clamped between the fixed limiting member and the movable limiting member.

[0014] Optionally, a follower shaft is rotatably connected to the housing, the follower shaft is connected to the opening and closing shaft rod of the circuit breaker, and the movable limiter is connected to the follower shaft through a transmission mechanism.

[0015] Optionally, the transmission mechanism includes a first transmission arm, a second transmission arm and a third transmission arm, the first transmission arm is arranged on the follower shaft, the third transmission arm is arranged on the movable limiting member, one end of the second transmission arm is hinged to the first transmission arm, and the other end is hinged to the third transmission arm.

[0016] Optionally, an indicator needle is provided on the follower shaft, and an opening indicator mark and a closing indicator mark are provided on the housing. When the circuit breaker is opening, the indicator needle points to the opening indicator mark; when the circuit breaker is closing, the indicator needle points to the closing indicator mark.

[0017] Optionally, an end face ratchet is provided at one end of the operating shaft away from the operating portion, and the end face ratchet is used for transmission connection with the operating mechanism.

[0018] Optionally, the housing is provided with an elastic element for pressing the stop plate against the fixed limiting member.

[0019] Optionally, a stopper is provided on the shell, the stop plate is provided between the stopper and the fixed limiting member, and a movable space is provided between the stopper and the fixed limiting member for allowing the stop plate to rotate to a certain angle.

[0020] In summary, this application includes at least the following beneficial technical effects:

[0021] This application utilizes a fixed stopper and a movable stopper, with the movable stopper having two positions. When the circuit breaker is open, the movable stopper is in the first position, preventing interference with the stop plate. When the operator operates the operating portion, the operating shaft can be driven to rotate. When the circuit breaker is closed, the movable stopper is in the second position, working together with the fixed stopper to limit the rotation of the stop plate, and thus the operating shaft, effectively preventing misoperation of the disconnector's operating mechanism. Furthermore, this application utilizes fewer components, a simpler structure, and a smaller footprint, contributing to miniaturization of the circuit breaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of an interlocking mechanism of an operating mechanism in an embodiment of the present application.

[0023] Figure 2 It is a structural schematic diagram showing that the movable limiting member in the embodiment of the present application is in the first position, wherein the shell is hidden.

[0024] Figure 3 It is a structural schematic diagram showing that the movable limiting member in the embodiment of the present application is in the second position, wherein the shell is hidden.

[0025] Explanation of the accompanying reference numerals: 1. Housing; 11. Fixed limit member; 12. Stop member; 13. Elastic element; 14. Movable limit member; 15. Opening indicator; 16. Closing indicator; 2. Operating shaft; 21. Operating part; 22. End ratchet; 23. Stop plate; 3. Follower shaft; 31. Indicator needle; 4. Transmission mechanism; 41. First transmission arm; 42. Second transmission arm; 43. Third transmission arm. DETAILED DESCRIPTION

[0026] The following is combined with Figure 1-3 , further details of this application are given.

[0027] Example:

[0028] The embodiment of the present application discloses an interlocking mechanism of an operating mechanism.

[0029] Reference Figure 1-2 An interlocking mechanism for an operating mechanism, used to interlock the operating mechanisms of a circuit breaker and a disconnector, comprises a housing 1 to which an operating shaft 2 is rotatably connected. An operating portion 21 is fixed to one end of the operating shaft 2 located outside the housing 1, and the other end located inside the housing 1 is connected to the operating mechanism of the disconnector. In this embodiment, the operating portion 21 is an operating handle for ease of operation.

[0030] Reference Figure 2 A ratchet 22 is coaxially fixed to the end of the operating shaft 2, away from the operating portion 21. This ratchet 22 is used for transmission connection with the operating mechanism. This prevents the disconnector's operating mechanism from reversing and facilitates intermittent stepping of the operating shaft 2, improving the stability and reliability of the operating mechanism.

[0031] Reference Figure 1-3 A stop plate 23 is fixed to the outer periphery of the operating shaft 2, and the stop plate 23 is located inside the shell 1. A fixed limiter 11 and a stopper 12 are also fixed to the inner side of the shell 1. The stop plate 23 is arranged between the stopper 12 and the fixed limiter 11. A movable space is provided between the stopper 12 and the fixed limiter 11 for the stop plate 23 to rotate to a certain angle. In this embodiment, the fixed limiter 11 and the stopper 12 are both rod-shaped components, and the two can limit the rotation of the stop plate 23 within a certain angle range α. In order to facilitate the pressing of the operating part 21, an elastic element 13 is provided on the shell 1 for pressing the stop plate 23 against the fixed limiter 11. After each pressing, the stop plate 23 can be reset by relying on the elastic element 13. In this way, by pressing the operating portion 21 n times and ensuring the maximum rotation range of the stop plate 23 each time, the operating shaft 2 can be rotated by an angle β=n·α, thereby accurately controlling the rotation angle of the operating shaft 2 and ensuring reliable input of the operating mechanism.

[0032] With reference to Figure 1-3 The movable limiting member 14 is arranged on the shell 1 in rotation, and when the circuit breaker is opened, the movable limiting member 14 is in the first position and arranged without interference with the stop plate 23; when the circuit breaker is closed, the movable limiting member 14 is in the second position and the stop plate 23 is clamped between the fixed limiting member 11 and the movable limiting member 14.

[0033] The interlocking mechanism is provided with the fixed limiting member 11 and the movable limiting member 14, the movable limiting member 14 has two position states, when the circuit breaker is opened, the movable limiting member 14 is in the first position and does not interfere with the stop plate 23, when the operating part 21 is operated by the operator, the operating shaft 2 can be rotated; when the circuit breaker is closed, the movable limiting member 14 is in the second position and cooperates with the fixed limiting member 11 to limit the rotation of the stop plate 23, and further limit the rotation of the operating shaft 2, effectively preventing the misoperation of the operating mechanism of the disconnecting switch.

[0034] With reference to Figure 1-3 The follower shaft 3 is connected to the shell 1 in rotation, the follower shaft 3 is connected with the opening and closing shaft rod of the circuit breaker, and the movable limiting member 14 is connected with the follower shaft 3 through the transmission mechanism 4. The transmission mechanism 4 includes a first transmission arm 41, a second transmission arm 42 and a third transmission arm 43, the first transmission arm 41 is fixed to the outer periphery of the follower shaft 3, the third transmission arm 43 is integrally bent and formed on the movable limiting member 14, one end of the second transmission arm 42 is hinged to the first transmission arm 41, and the other end is hinged to the third transmission arm 43. When the opening and closing shaft rod of the circuit breaker rotates, the follower shaft 3 rotates, the follower shaft 3 drives the first transmission arm 41 to rotate, and the first transmission arm 41, the second transmission arm 42 and the third transmission arm 43 form a three-link mechanism, thereby driving the movable limiting member 14 to rotate. Since the opening and closing shaft rod of the circuit breaker has two position states of opening and closing, the movable limiting member 14 can have two position states of the first position and the second position and rotate synchronously with the opening and closing shaft rod of the circuit breaker, thereby ensuring the reliability of the interlocking mechanism.

[0035] With reference to Figure 1-3 In order to further prevent misoperation and reduce the possibility of damage to the interlocking mechanism when the operating mechanism is locked, the follower shaft 3 is fixed with an indicating needle 31, the indicating needle 31 is located outside the shell 1, the outer side wall of the shell 1 is provided with an opening indication mark 15 and a closing indication mark 16, when the circuit breaker is opened, the indicating needle 31 points to the opening indication mark 15; when the circuit breaker is closed, the indicating needle 31 points to the closing indication mark 16.

[0036] The above are preferred embodiments of the present application, which do not limit the protection scope of the present application, therefore: any equivalent changes made according to the structure, shape, principle of the present application shall be covered within the protection scope of the present application.

Claims

1. An interlocking mechanism of an operating mechanism, characterized in that: include: Housing (1); An operating shaft (2) is rotatably mounted on the housing (1), one end of the operating shaft being provided with an operating portion (21) and the other end being used for connection with an operating mechanism of the isolating switch; A stop plate (23) is provided on the operating shaft (2); A fixed limiting member (11) is provided on the housing (1); A movable limiting member (14) is rotatably disposed on the housing (1); When the circuit breaker is opened, the movable limiting member (14) is in the first position and is arranged so as not to interfere with the stop plate (23); When the circuit breaker is closed, the movable limiting member (14) is in the second position, and the stop plate (23) is clamped between the fixed limiting member (11) and the movable limiting member (14).

2. The interlocking mechanism of an operating mechanism according to claim 1, characterized in that: A follower shaft (3) is rotatably connected to the housing (1), the follower shaft (3) is connected to the opening and closing shaft rod of the circuit breaker, and the movable limiter (14) is connected to the follower shaft (3) via a transmission mechanism (4).

3. The interlocking mechanism of an operating mechanism according to claim 2, characterized in that: The transmission mechanism (4) comprises a first transmission arm (41), a second transmission arm (42) and a third transmission arm (43); the first transmission arm (41) is arranged on the follower shaft (3); the third transmission arm (43) is arranged on the movable limiter (14); one end of the second transmission arm (42) is hinged to the first transmission arm (41), and the other end is hinged to the third transmission arm (43).

4. The interlocking mechanism of an operating mechanism according to claim 2, characterized in that: The follower shaft (3) is provided with an indicator needle (31), and the housing (1) is provided with an opening indicator mark (15) and a closing indicator mark (16). When the circuit breaker is opening, the indicator needle (31) points to the opening indicator mark (15); when the circuit breaker is closing, the indicator needle (31) points to the closing indicator mark (16).

5. The interlocking mechanism of an operating mechanism according to claim 1, characterized in that: An end face ratchet (22) is provided at one end of the operating shaft (2) away from the operating portion (21), and the end face ratchet (22) is used for transmission connection with the operating mechanism.

6. The interlocking mechanism of an operating mechanism according to claim 1, characterized in that: The housing (1) is provided with an elastic element (13) for pressing the stop plate (23) against the fixed limiting member (11).

7. The interlocking mechanism of an operating mechanism according to claim 1, characterized in that: A stopper (12) is provided on the housing (1); the stopper plate (23) is provided between the stopper (12) and the fixed stopper (11); and a movable space is provided between the stopper (12) and the fixed stopper (11) for the stopper plate (23) to rotate to a certain angle.

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