Circuit breaker electric operating mechanism with position sensor

Abstract

A circuit breaker electric operating mechanism with position sensors relates to an operating handle, a manual operating mechanism installed on a circuit breaker and a connecting square shaft between the operating handle and the manual operating mechanism, and is characterized in that the electric operating mechanism (5) is composed of a gear motor, a gear shifting block assembly, an intermittent transmission shaft, a closing position sensor, an opening position sensor, a control circuit and a shell; a shifting block on the gear shifting block assembly is matched with a stop block on the intermittent transmission shaft and is driven by the gear motor; the connecting square shaft is matched with the square shaft hole of the intermittent transmission shaft to synchronously rotate, and drives the manual operation mechanism to realize the opening and closing operation of the circuit breaker; the switching-on position sensor and the switching-off position sensor are triggered through position sensor triggers located at corresponding positions on the gear shifting block assembly, the rotation position of the intermittent transmission shaft is measured, switching-on and switching-off in-place information is transmitted to the control circuit, and starting and stopping control over the gear motor is achieved. And when the movement is finished, the shifting block returns to the initial position, and at the moment, manual operation of the operating handle is not influenced by the shifting block. According to the utility model, the problem that the traditional manual operation mechanism cannot coexist with electric operation is solved.

Description

Technical Field

[0001] This utility model relates to the field of switch technology, specifically to a multi-sensor electric operating mechanism. Background Technology

[0002] In existing technologies, circuit breakers, as core protection components of power distribution systems, directly impact the operational safety of these systems due to the flexibility and reliability of their operating mechanisms. Currently, circuit breaker operating mechanisms on the market are mainly divided into two categories: manual and electric. While manual operating mechanisms are simple in structure, they suffer from low operating efficiency and poor safety in large-scale power distribution scenarios or remote control applications. Electric operating mechanisms, while meeting remote control requirements, have significant technical drawbacks: when users need to upgrade from a manual to an electric mechanism, the original circuit breaker housing must be disassembled, and core transmission components replaced, resulting in a complex disassembly and assembly process (averaging over 2 hours). Furthermore, the upgraded electric mechanism is not seamlessly compatible with the original manual mechanism—if the electric mechanism malfunctions, users may be unable to manually operate the emergency circuit breaker, leading to operational paralysis of the power distribution system.

[0003] Currently, there is no circuit breaker operating mechanism solution that can both simplify the installation process of upgrading manual operation to electric operation and achieve the coexistence of manual and electric operation without switching. The above-mentioned problems have become technical pain points that urgently need to be solved in this field. Summary of the Invention

[0004] The purpose of this invention is to overcome the defects of the prior art and provide a multi-sensor electric operating mechanism that is easy to install and can work together with a manual operating mechanism.

[0005] To achieve the above objectives, this utility model employs an electric operating mechanism for a circuit breaker with a position sensor, involving an operating handle (1), a manual operating mechanism (3) mounted on a circuit breaker (2), and a connecting square shaft (4) between the two. The electric operating mechanism (5) comprises a geared motor (6), a gear shift assembly (7), an intermittent transmission shaft (8), a closing position sensor (9), an opening position sensor (10), a control circuit (11), and a housing (12). The shift block (13) on the gear shift assembly (7) cooperates with the stop block (14) on the intermittent transmission shaft (8) and is driven by the geared motor (6). The connecting square shaft (9) 4) It rotates synchronously with the square shaft hole of the intermittent transmission shaft (8) to drive the manual operation mechanism (3) to realize the opening and closing operation of the circuit breaker (2); the closing position sensor (9) and the opening position sensor (10) are triggered by the position sensor trigger (16) located at the corresponding position on the gear block assembly (7) to complete the measurement of the rotation position of the intermittent transmission shaft (8), and transmit the opening / closing position information to the control circuit (11) to realize the start and stop control of the geared motor (6). When the movement ends, the blocks (13) return to the initial position. At this time, the manual operation of the operating handle (1) is not affected by the blocks (13).

[0006] Specifically, it also includes an initial position sensor (15), which is located between the closing position sensor (9) and the opening position sensor (10). After the opening and closing operation is completed, the control circuit (11) continues to drive the geared motor (6) back to the initial position and stop.

[0007] Specifically, the sensors for the closing position sensor (9), the opening position sensor (10), and the initial position sensor (15) can be microswitches located on the control circuit (11), and in this case, the position sensor trigger (16) is a toggle lever.

[0008] Specifically, the sensors for the closing position sensor (9), the opening position sensor (10), and the initial position sensor (15) can be Hall switches located on the control circuit (11), and the position sensor trigger (16) is an inductive magnetic sheet.

[0009] Specifically, the housing (12) is fixed to the outer shell of the manual operating mechanism (3). Attached Figure Description

[0010] Figure 1 is a side view of the present invention ignoring the housing.

[0011] Figure 2 is a top view of this utility model.

[0012] Figure 3 is a front view of this utility model.

[0013] Figure 4 is a front view of this utility model ignoring the shell.

[0014] The figure includes: operating handle (1), circuit breaker (2), manual operating mechanism (3), connecting square shaft (4), electric operating mechanism (5), geared motor (6), gear block assembly (7), intermittent transmission shaft (8), closed position sensor (9), open position sensor (10), control circuit (11), housing (12), toggle block (13), stop block (14), initial position sensor (15), and induction magnetic sheet (16). Detailed Implementation

[0015] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the invention. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0016] like Figure 2 , 3 As shown, an electric operating mechanism for a circuit breaker with a position sensor is disclosed, comprising an operating handle (1), a manual operating mechanism (3) mounted on a circuit breaker (2), and a connecting shaft (4) between the two. The electric operating mechanism (5) consists of a geared motor (6), a gear block assembly (7), an intermittent transmission shaft (8), a closing position sensor (9), an opening position sensor (10), a control circuit (11), and a housing (12). The paddle (13) on the gear block assembly (7) cooperates with the stop (14) on the intermittent transmission shaft (8) and is driven by the geared motor (6). The housing (12) is fixed to the outer shell of the manual operating mechanism (3).

[0017] like Figure 1 , 4As shown, the connecting square shaft (4) and the square shaft hole of the intermittent transmission shaft (8) rotate synchronously, driving the manual operating mechanism (3) to realize the opening and closing operation of the circuit breaker (2); the closing position sensor (9) and the opening position sensor (10) transmit the opening / closing position information to the control circuit (11) by measuring the rotation position of the intermittent transmission shaft (8), thereby realizing the start and stop control of the geared motor (6). When the movement ends, the toggle block (13) returns to the initial position. At this time, the manual operation of the operating handle (1) is not affected by the toggle block (13). The electric operating mechanism (5) also includes an initial position sensor (15), which is located between the closing position sensor (9) and the opening position sensor (10). After the opening and closing operation is completed, the control circuit (11) continues to drive the geared motor (6) back to the initial position and stop. The position sensor can be a micro switch located on the control circuit (11), triggered by three toggle levers (16) at corresponding positions on the gear toggle assembly (7), or it can be a Hall switch located on the control circuit (11), triggered by three induction magnets (16) at corresponding positions on the gear toggle assembly (7).

[0018] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A circuit breaker electric operating mechanism with a position sensor, comprising an operating handle (1), a manual operating mechanism (3) mounted on a circuit breaker (2), and a connecting square shaft (4) between the two, characterized in that: The electric operating mechanism (5) consists of a geared motor (6), a gear shift assembly (7), an intermittent transmission shaft (8), a closing position sensor (9), an opening position sensor (10), a control circuit (11), and a housing (12); the shift block (13) on the gear shift assembly (7) cooperates with the stop block (14) on the intermittent transmission shaft (8) and is driven by the geared motor (6); the connecting square shaft (4) cooperates with the square shaft hole of the intermittent transmission shaft (8) to rotate synchronously, driving the manual operating mechanism (3) to realize the circuit breaker ( 2) Opening and closing operation; the closing position sensor (9) and the opening position sensor (10) are triggered by the position sensor trigger (16) located at the corresponding position on the gear block assembly (7) to complete the measurement of the rotation position of the intermittent transmission shaft (8), and transmit the opening / closing position information to the control circuit (11) to realize the start and stop control of the geared motor (6). When the movement ends, the blocks (13) return to the initial position. At this time, the manual operation of the operating handle (1) is not affected by the blocks (13).

2. The circuit breaker electric operating mechanism with a position sensor according to claim 1, characterized in that, It also includes an initial position sensor (15), which is located between the closing position sensor (9) and the opening position sensor (10). After the opening and closing operation is completed, the control circuit (11) continues to drive the geared motor (6) back to the initial position and stop.

3. A circuit breaker electric operating mechanism with a position sensor according to claim 1 or 2, characterized in that, The sensors for the closing position sensor (9), the opening position sensor (10), and the initial position sensor (15) can be microswitches located on the control circuit (11), and the position sensor trigger (16) is a toggle lever.

4. A circuit breaker electric operating mechanism with a position sensor according to claim 1 or 2, characterized in that, The sensors for the closing position sensor (9), the opening position sensor (10), and the initial position sensor (15) can be Hall switches located on the control circuit (11), and the position sensor trigger (16) is an inductive magnetic sheet.

5. The circuit breaker electric operating mechanism with a position sensor according to claim 1, characterized in that, The housing (12) is fixed to the outer shell of the manual operating mechanism (3).

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