Breaker spring operating mechanism energy storage state indicating device

Abstract

The utility model relates to an energy storage state indicating device of a circuit breaker spring operating mechanism. The energy storage state indicating device comprises a rack, a ratchet transmission assembly and a closing spring energy storage mechanism, the ratchet wheel is driven by the motor to rotate, drives the closing spring energy storage mechanism to act and drives the ratchet wheel shaft and the cam to rotate. A pushing pin is fixed to the outer end face of the cam, vertically extends outwards and is located on the outer side of the rotation center. The lower right portion of the pin shaft is connected with a reset spring, and the right end of the pin shaft is provided with an indicating arrow. An energy storage state indication board is connected to the right rear position, corresponding to the indication arrow, of the rack and provided with an upper state identification symbol and a lower state identification symbol. When the cam is in a first state, the push pin is located on the opposite side of the indicating component, and the right end of the indicating component points to a first state identifier. And when the cam rotates to a second state, the pushing pin approaches and pushes the indicating component to rotate reversely, so that the right end of the indicating component points to the second state identification symbol, and the visual indication of the energy storage state is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit breaker spring operating mechanisms, and particularly relates to an energy storage state indicating device for a circuit breaker spring operating mechanism. Background Art

[0002] High-voltage circuit breakers are electrical appliances with contacts. The opening and closing of the circuit are achieved through the opening and closing of the contacts. Therefore, a certain mechanical operating system must be relied on to complete. The mechanical operating device outside the circuit breaker body is called an operating mechanism. According to different energy forms, the operating mechanisms can be divided into manual operating mechanisms (CS), electromagnetic operating mechanisms (CD), spring operating mechanisms (CT), and motor operating mechanisms (CJ). In the voltage range of 126 - 252 kV, the spring operating mechanism has become the first choice of operating mechanism due to its advantages such as fast response.

[0003] The energy storage state indicating device is used to display the opening and closing states of the circuit breaker, facilitating maintenance personnel to understand the connection state of the circuit breaker and avoiding the risk of electric shock caused by live maintenance. For example, the patent document number CN116959928B discloses an energy storage opening and closing indication device and identification method for a circuit breaker spring operating mechanism. However, its energy storage state indicating device has a complex structure and is connected to the electromagnetic switch shaft. When the electromagnetic switch is damaged, it cannot be used continuously, increasing the frequency of maintenance and use. Therefore, we have designed a simple mechanical indicating device that is easy to install and maintain and has a long service life. Summary of the Utility Model

[0004] In view of the problems and deficiencies in the prior art, the utility model provides an energy storage state indicating device for a circuit breaker spring operating mechanism.

[0005] The technical solution of the utility model is as follows:

[0006] An energy storage state indicating device for a circuit breaker spring operating mechanism includes a frame, on which a ratchet drive assembly and a closing spring energy storage mechanism are connected. The ratchet drive assembly includes a ratchet and a ratchet shaft. The ratchet is driven by a motor through a transmission device to rotate. Its lower part is connected to and drives the closing spring energy storage mechanism to act, and its middle part is connected to one end of the ratchet shaft and drives it to rotate. The other end of the ratchet shaft is connected to a cam.

[0007] A push pin is fixedly connected to the outer end face of the cam. The push pin extends perpendicularly outward from the end face of the cam and is located outside the rotation center of the cam.

[0008] An indicating component is rotatably connected to the frame on the right side of the cam through a pin shaft. A return spring is connected to the indicating component at a position below and to the right of the pin shaft. And an indicating arrow is provided at the rightmost side of the indicating component. An energy storage state indicating plate is connected to the frame behind the right rear of the indicating arrow. The energy storage state indicating plate is provided with two state identification symbols, upper and lower.

[0009] When the cam is in the first state, the push pin is located on the side opposite to the indicating member, and the right end of the indicating member points to the first state identification symbol; when the cam is in the second state, the push pin is rotated to the side close to the indicating member and can push the indicating member to rotate in the direction opposite to its rotation direction, and the right end of the indicating member points to the second state identification symbol.

[0010] Specifically, the push pin can be a pin, which is fixed to the end of the cam by threaded connection. The return spring is a tension spring, and the energy storage state identification symbols are Chinese characters arranged vertically. Among them, the first state identification symbol is "energized", and the second state identification symbol is "not energized". English words or any other agreed symbols that can identify the energy storage state can also be used.

[0011] The pressing flange of the cam also just presses the trigger roller of the travel switch assembly, so that the motor is powered off. When the closing electromagnet is energized, the closing electromagnet push rod pushes the closing pawl, so that the energy storage holding pawl disengages, and the compressed closing spring releases energy, driving the ratchet to rotate, driving the ratchet shaft to rotate and driving the cam to rotate. When the energy release of the closing spring is completed, the cam continues to rotate clockwise, so that the pressing flange is separated from the trigger roller of the travel switch, and the travel switch is released.

[0012] According to a specific embodiment, the indicating member includes a connecting portion, a reset portion and an indicating portion connected in sequence;

[0013] The connecting portion is rotationally connected to the frame through a first connecting hole, and a driving portion is provided on the side facing the cam, and the driving portion extends to a position where it can be pushed by a pin shaft; the lower part of the reset portion is connected to the return spring; an indicating arrow is provided at the right end of the indicating portion.

[0014] Further, the width of the driving portion is smaller than the width of the connecting portion, and a right-angled notch facing upward is formed between the driving portion and the connecting portion. The connecting portion and the indicating portion are parallel front and back, and the indicating portion is located in the front, and the reset portion is vertically connected between the connecting portion and the indicating portion. The width of the indicating portion is smaller than the width of the reset portion, and the indicating arrow is a triangular arrow. The reset portion is connected to the upper end of the return spring through a second connecting hole below, and the lower end of the return spring is connected to the frame.

[0015] According to a specific embodiment, a counter is further provided on the frame above the indicating member, and is connected to the upper part of the indicating member through a counting spring. The upper end of the counting spring is connected to the counter, and the lower end is connected to the reset portion through a third connecting hole, where the third connecting hole is directly above the second connecting hole. The counter is used to count the number of energy storage times of the spring operating mechanism, which is convenient for the factory to check whether the requirements for the number of factory test times are met.

[0016] Working principle: After the motor is powered on, the ratchet is driven to rotate by the ratchet drive assembly. The ratchet drives the pull rod hinged to its lower part to reciprocate up and down, so that the closing spring is compressed for energy storage. While the ratchet rotates, it drives the ratchet shaft to rotate and drives the cam connected to it to rotate. When the closing spring energy storage is completed, the cam rotates clockwise to the position where the push pin contacts the driving part of the indicating component, and pushes the driving part to rotate counterclockwise. The arrow of the indicating part rotates counterclockwise to the "energy stored" position. When the cam continues to rotate clockwise driven by the ratchet shaft, the push pin disengages from the driving part of the indicating component, and the indicating component resets to the initial position, and the indicating arrow of the indicating part points to the "not energy stored" position. At the same time, the counting spring pulls the counter to complete one count, realizing the statistics of the energy storage state times.

[0017] The beneficial effects of the present utility model are as follows:

[0018] A push pin is arranged on the cam, and the indicating component is driven to rotate by pushing the push pin to drive the indicating component to rotate, so as to realize the indication switching between the "energy stored" and "not energy stored" states, which is convenient for prompting relevant personnel about the working state of the circuit breaker; moreover, the structure is simple and convenient for installation and maintenance; all mechanical components are adopted, and the service life is longer compared with the indicating device arranged on the electromagnetic element.

[0019] In addition, the energy storage times of the spring operating mechanism are counted through the counter, which is convenient for the factory to check whether the requirements for the number of factory test times are met. Description of the drawings

[0020] Figure 1 is a three-dimensional view of the spring operating mechanism;

[0021] Figure 2 is a three-dimensional view of the embodiment;

[0022] Figure 3 is Figure 2 a partial enlarged view of A in

[0023] Figure 4 is a three-dimensional view of the indicating component;

[0024] 1. Motor; 2. Ratchet drive mechanism; 21. Ratchet shaft; 22. Ratchet; 3. Closing spring energy storage mechanism; 4. Cam; 5. Push pin; 6. Indicating component; 7. Energy storage state display board; 8. Counter; 61. Connecting part; 611. First connecting hole; 612. Driving part; 62. Reset part; 621. Second connecting hole; 622. Third connecting hole; 63. Indicating part. Specific implementation manners

[0025] The following will further elaborate on the technical means adopted to achieve the predetermined invention purpose of the present utility model in combination with the drawings in the embodiments of the present utility model.

[0026] SeeFigure 1 as shown, where Figure 1 is a perspective view of a spring operating mechanism.

[0027] A storage state indicating device for a circuit breaker spring operating mechanism, comprising a frame, on which a ratchet 22 transmission assembly and a closing spring energy storage mechanism 3 are connected. The ratchet 22 transmission assembly includes a ratchet 22 and a ratchet shaft 21. The ratchet 22 is driven by a motor 1 through a transmission device to rotate. Its lower part is connected to and drives the closing spring energy storage mechanism 3 to act. The middle part is connected to one end of the ratchet shaft 21 and drives it to rotate. The other end of the ratchet shaft 21 is connected to a cam 4;

[0028] See Figure 2 and Figure 3 where Figure 2 is a perspective view of the embodiment; Figure 3 is Figure 2 a perspective view of the position A in

[0029] A push pin 5 is fixedly connected to the outer end face of the cam 4. The push pin 5 extends perpendicularly outward from the end face of the cam 4 and is located outside the rotation center of the cam 4. In this embodiment, the push pin is located on one side close to the outer peripheral contour of the cam;

[0030] On the frame on the right side of the cam 4, an indicating member 6 is rotatably connected through a pin shaft. A return spring is connected to the indicating member 6 at a position below the right side of the pin shaft. And an indicating arrow is provided at the rightmost side of the indicating member 6. A storage state indicating plate is connected to the frame behind the right rear of the indicating arrow. The storage state indicating plate is provided with two state identification symbols, upper and lower;

[0031] When the cam 4 is in the first state, the push pin 5 is located on the side opposite to the indicating member 6, and the right end of the indicating member 6 points to the first state identification symbol; when the cam 4 is in the second state, the push pin 5 is rotated to the side close to the indicating member 6 and can push the indicating member 6 to rotate in the direction opposite to its rotation direction. The right end of the indicating member 6 points to the second state identification symbol.

[0032] Specifically, the push pin 5 can be a pin, which is fixed to the end of the cam 4 by threaded connection. The return spring is a tension spring. The storage state identification symbols are Chinese characters arranged up and down. Among them, the first state identification symbol is "not energized", and the second state identification symbol is "energized". It can also be an English word or any other agreed symbol that can identify the storage state. When the cam 4 is in the first state, the push pin is located on the side of the extended line to the left of the rotation center of the cam passing through the indicating member. After the cam rotates clockwise by about 180°, when the cam 4 is in the second state, the push pin rotates to the side close to the indicating member and drives the push pin to rotate counterclockwise. The indicating arrow at the rightmost end of the indicating member rotates counterclockwise to the second state identification symbol "energized".

[0033] See Figure 4, a perspective view of the indicating component 6.

[0034] According to a specific embodiment, the indicating component 6 includes a connecting portion 61, a reset portion 62, and an indicating portion 63 that are sequentially connected;

[0035] The connecting portion 61 is rotatably connected to the frame through a first connecting hole 611, and a driving portion 612 is provided on the side facing the cam 4. The driving portion 612 extends to a position where it can be pushed by the push pin 5; the lower portion of the reset portion 62 is connected to a reset spring; and an indicating arrow is provided at the right end of the indicating portion 63.

[0036] Furthermore, the width of the driving portion 612 is smaller than the width of the connecting portion 61, and a right-angled notch facing upward is formed between them. The connecting portion 61 and the indicating portion 63 are parallel to each other front and back, and the indicating portion 63 is located in the front. The reset portion 62 is vertically connected between the connecting portion 61 and the indicating portion 63. The width of the indicating portion 63 is smaller than the width of the reset portion 62, and the indicating arrow is a triangular arrow. The reset portion 62 is connected to the upper end of the reset spring through a second connecting hole 621 below, and the lower end of the reset spring is connected to the frame.

[0037] See Figure 3 , according to a specific embodiment, a technical device is further provided on the frame above the indicating component 6 and is connected to the upper part of the indicating component 6 through a counting spring. The upper end of the counting spring is connected to the counter 8, and the lower end is connected to the reset portion 62 through a third connecting hole 622, where the third connecting hole 622 is directly above the second connecting hole 621. The counter 8 is used to count the energy storage times of the spring operating mechanism, facilitating the factory to check whether the requirements for the number of factory test times are met.

[0038] Working principle: After the motor 1 is powered on, the ratchet 22 is driven to rotate through the ratchet 22 transmission assembly. The ratchet 22 drives the pull rod hinged to its lower part to reciprocate up and down, compressing the closing spring for energy storage. While the ratchet 22 rotates, it drives the ratchet shaft 21 to rotate and drives the cam 4 connected thereto to rotate. When the closing spring energy storage is completed, the cam 4 rotates clockwise to the position where the push pin 5 contacts the driving portion 612 of the indicating component 6 and pushes the driving portion 612 to rotate counterclockwise, and the arrow of the indicating portion 63 rotates counterclockwise to the "energy stored" position. When the cam 4 continues to rotate clockwise driven by the ratchet shaft 21, the push pin 5 disengages from the driving portion 612 of the indicating component 6, and the indicating component 6 resets to the initial position, and the indicating arrow of the indicating portion 63 points to the "not energy stored" position. At the same time, the counting spring pulls the counter 8 to complete one count, realizing the statistics of the energy storage state times.

[0039] The above is the preferred embodiment of the present utility model. However, the present utility model is not limited to the above embodiments and examples. All changes, equivalent substitutions, improvements, etc. made within the scope of knowledge of those skilled in the art without departing from the inventive concept of the present invention shall be included within the protection scope of the present utility model.

Claims

1. A storage state indicating device for a circuit breaker spring operating mechanism, comprising a frame, on which a ratchet (22) drive assembly and a closing spring energy storage mechanism (3) are connected. The ratchet (22) drive assembly includes a ratchet (22) and a ratchet shaft (21). The ratchet (22) is driven by a motor (1) through a transmission device to rotate. Its lower part is connected to and drives the closing spring energy storage mechanism (3) to act. The middle part is connected to one end of the ratchet shaft (21) and drives it to rotate. The other end of the ratchet shaft (21) is connected to a cam (4). It is characterized in that a push pin (5) is fixedly connected to the outer end face of the cam (4). The push pin (5) extends outward perpendicular to the end face of the cam (4) and is located outside the rotation center of the cam (4). an indicating member (6) is rotatably connected to the frame on the right side of the cam (4) through a pin shaft. A return spring is connected to the indicating member (6) at a position below the pin shaft on the right side. And an indicating arrow is provided at the rightmost side of the indicating member. A storage state indicating plate is connected to the frame behind the right rear of the indicating arrow. Two state identification symbols, upper and lower, are provided on the storage state indicating plate. When the cam (4) is in the first state, the push pin (5) is located on the side opposite to the indicating member (6), and the right end of the indicating member (6) points to the first state identification symbol. When the cam (4) is in the second state, the push pin (5) is rotated to the side close to the indicating member (6) and can push the indicating member (6) to rotate in the direction opposite to its rotation direction. The right end of the indicating member (6) points to the second state identification symbol.

2. The indicating device according to claim 1, wherein The indicating member (6) includes a connecting portion (61), a reset portion (62) and an indicating portion (63) connected in sequence. The connecting portion (61) is rotatably connected to the frame through a first connecting hole (611). A driving portion (612) is provided on the side facing the cam (4). The driving portion (612) extends to a position where it can be pushed by the push pin (5). The lower part of the reset portion (62) is connected to the return spring. An indicating arrow is provided at the right end of the indicating portion (63).

3. The indicating device according to claim 2, characterized in that, The width of the driving portion (612) is smaller than the width of the connecting portion (61), and a right-angled notch facing upward is formed between the driving portion (612) and the connecting portion (61).

4. The indicating device according to claim 2, characterized in that, The connecting portion (61) and the indicating portion (63) are parallel to each other front and back, and the indicating portion (63) is located in the front. The reset portion (62) is vertically connected between the connecting portion (61) and the indicating portion (63).

5. The indicating device according to claim 4, characterized in that, The width of the indicating portion (63) is smaller than the width of the reset portion (62), and the indicating arrow is a triangular arrow.

6. The indicating device according to claim 2, characterized in that, The reset portion (62) is connected to the upper end of the return spring through a second connecting hole (621) below, and the lower end of the return spring is connected to the frame.

7. The indicating device according to claim 6, characterized in that, A counter is further provided on the frame above the indicating member (6) and is connected to the upper part of the indicating member (6) through a counting spring.

8. The indicating device according to claim 7, characterized in that, The upper end of the counting spring is connected to the counter (8), and the lower end is connected to the reset portion (62) through a third connecting hole (622), where the third connecting hole (622) is directly above the second connecting hole (621).

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