Indicating device for opening and closing positions of ring main unit circuit breaker

Abstract

The utility model discloses an indicating device for opening and closing positions of a ring main unit circuit breaker, which comprises a transmission main shaft, a torsion spring, an opening and closing fixing support piece, an opening and closing position indicating label, a spring and a cam which are mutually combined for use, the cam is fixed on the transmission main shaft, and the opening and closing position indicating label is connected with a wheel column of the cam through the spring. When the circuit breaker is opened, the spring is not stressed, and the opening and closing position indicating sign is limited in an opening area under the action of the torsion spring, the column B, the column C and the column E. When the circuit breaker is closed, the transmission main shaft rotates to drive the cam to move downwards, the spring is stretched, the torsion spring is compressed, the opening and closing position indicating sign is limited in a closing area, manual adjustment is not needed, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of circuit breaker indicating equipment, in particular to an indicating device for the opening and closing positions of a circuit breaker of a ring network cabinet. Background Art

[0002] A circuit breaker is a switch device that can close, carry and disconnect current under normal circuit conditions and close, carry and disconnect current under abnormal circuit conditions within a specified time. Circuit breakers are divided into high-voltage circuit breakers and low-voltage circuit breakers according to their scope of use. The boundary between high and low voltage is relatively vague. Generally, those above 3kV are called high-voltage electrical appliances. Circuit breakers can be used to distribute electrical energy, start asynchronous motors infrequently, and protect power lines and motors. When they have serious overloads, short circuits, undervoltage and other faults, they can automatically cut off the circuit. Its function is equivalent to the combination of fuse switches and over- and under-temperature relays.

[0003] For example, a Chinese patent with publication number CN108461328B discloses a ring network cabinet anti-misoperation indication identification device, including an operation room and an operation panel, an operating mechanism is installed inside the operation room, the operating mechanism is located on the operation panel and an opening and closing switch is installed, the operation panel is provided with a silk screen circuit or silk screen pattern for displaying and feeding back the opening and closing switch signal, the silk screen circuit or silk screen pattern is provided with a notch, the operating mechanism is rotatably provided with an opening and closing indicator piece, the opening and closing indicator piece is connected to the opening and closing switch, when the opening and closing switch is in the opening state, the opening and closing indicator piece can be rotated to the notch and connected to the silk screen circuit. The present invention adopts two different technical solutions of silk screen pattern or silk screen circuit, both of which can effectively enable the operator to effectively observe the state of the opening and closing switch in the spatial environment of the ring network cabinet, and effectively avoid misoperation under power-on conditions.

[0004] Another example is a Chinese patent with publication number CN208045353U, which discloses an indication device for GIS opening and closing in place, and relates to the field of GIS opening and closing technology. The device includes an arc-shaped indicator and an indicator needle. The arc-shaped indicator is concentrically arranged with the fan-shaped shape drawn by the rotation of the crank arm. The indicator includes an arc-shaped opening indicator and an arc-shaped closing indicator. The indicator has an opening position, a closing position, and an abnormal position, and is marked with three different colors respectively. The opening indicator is set at the opening position, and the closing indicator is set at the closing position, which are red, yellow, and green respectively. The indicator needle includes an indicator base and an indicator rod. The base is inserted into the crank arm, and the indicator rod is used to point to the arc-shaped indicator under the drive of the crank arm. The indicator needle can realize opening and closing indication with the operating mechanism. When the operating mechanism of the GIS equipment is stuck and the knife switch is not in place, the device can clearly indicate it, intuitively and accurately reflecting the equipment in place, making the operation of the GIS disconnector and the grounding switch more efficient, safe, and reliable.

[0005] In summary, the existing circuit breaker indicating device has many disadvantages, which are summarized as follows:

[0006] The circuit breaker opening and closing position indicator signs are directly fixed on the transmission main shaft. When the circuit breaker is operated to the opening indication area and the closing indication area, its accurate position cannot be determined. The positions of the opening indication and the closing indication need to be adjusted manually, which takes a long time and cannot effectively guarantee the accurate indication effect of the opening and closing indication positions. Utility Model Content

[0007] In view of the deficiencies in the prior art, the utility model provides an indicating device for the opening and closing positions of a circuit breaker of a ring main unit to solve the above problems.

[0008] In order to achieve the above objectives, the utility model is implemented through the following technical solutions.

[0009] A device for indicating the opening and closing positions of a circuit breaker of a ring network cabinet comprises a transmission main shaft, a torsion spring, an opening and closing fixed support, an opening and closing position indicating sign, a spring, and a cam. The transmission main shaft is fixed with a cam, one end of the spring is connected to the cam, and the other end is connected to the opening and closing position indicating sign. The opening and closing position indicating sign is rotatably connected to the opening and closing fixed support. The torsion spring is sleeved on the opening and closing position indicating sign and contacts the opening and closing fixed support. The transmission main shaft is fixed with a cam, and the opening and closing position indicating sign is connected to the wheel column of the cam through a spring. When the circuit breaker is opened, the spring is not subjected to force, and the opening and closing position indicating sign is limited to the opening area under the action of the torsion spring and the B column, the C column, and the E column. When the circuit breaker is closed, the transmission main shaft rotates to drive the cam to move downward, the spring is stretched, and the torsion spring is compressed, so that the opening and closing position indicating sign is limited to the closing area, without manual adjustment, thereby improving production efficiency.

[0010] Preferably, a wheel column is provided on the cam.

[0011] Preferably, the wheel column is connected to one end of the spring.

[0012] Preferably, an A-pillar, a B-pillar and a C-pillar are provided on one side of the opening and closing position indication sign.

[0013] Preferably, the A-pillar is connected to the other end of the spring, the B-pillar is in contact with one end of the torsion spring, and the C-pillar is connected to the torsion spring sleeve.

[0014] Preferably, two areas are provided on the other side of the opening and closing position indication sign, namely the opening area and the closing area.

[0015] Preferably, a window, a D-pillar and an E-pillar are provided on the opening and closing switch fixing support.

[0016] Preferably, the window position corresponds to the opening area and the closing area.

[0017] Preferably, the D-pillar is connected through the C-pillar.

[0018] Preferably, the E-pillar contacts the other end of the torsion spring.

[0019] Compared with the prior art, the utility model discloses a device for indicating the opening and closing positions of the circuit breaker of the ring network cabinet, including a transmission main shaft, a torsion spring, an opening and closing fixed support, an opening and closing position indicating sign, a spring, and a cam. The six are used in combination with each other to play a role. The cam is fixed on the transmission main shaft, and the opening and closing position indicating sign is connected to the wheel column of the cam through the spring. When the circuit breaker is opened, the spring is not subjected to force, and the opening and closing position indicating sign is limited to the opening area under the action of the torsion spring and the B-pillar, C-pillar, and E-pillar. When the circuit breaker is closed, the transmission main shaft rotates to drive the cam to move downward, the spring is stretched, and the torsion spring is compressed, so that the opening and closing position indicating sign is limited to the closing area, without manual adjustment, thereby improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the indicating device for the opening and closing positions of the circuit breaker of the ring main unit according to the utility model;

[0021] Figure 2 It is a schematic diagram of the opening and closing states of the indicating device for the opening and closing positions of the circuit breaker of the ring network cabinet according to the utility model;

[0022] Figure 3 It is a schematic diagram of the opening and closing states of the indicating device for the opening and closing positions of the circuit breaker of the ring network cabinet according to the utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the opening and closing position indicator sign of the utility model;

[0024] Figure 5 It is a schematic diagram of the structure of the indicating device for the opening and closing positions of the circuit breaker of the ring network cabinet in the circuit breaker of the utility model;

[0025] Figure 6 It is a schematic diagram of the structure of the indicating device for the opening and closing positions of the circuit breaker of the ring network cabinet in the circuit breaker of the utility model;

[0026] Figure 7 It is a schematic diagram of the structure of the indicating device for the opening and closing positions of the circuit breaker of the ring network cabinet in the circuit breaker of the utility model;

[0027] Figure 8 The utility model is a schematic structural diagram of the indicating device for the opening and closing positions of the circuit breaker of the ring network cabinet in the circuit breaker. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0029] A device for indicating the opening and closing positions of a circuit breaker of a ring network cabinet comprises a transmission main shaft 1, a torsion spring 2, an opening and closing fixed support 3, an opening and closing position indicating sign 4, a spring 5, and a cam 6. The cam 6 is fixed on the transmission main shaft 1. One end of the spring 5 is connected to the cam 6, and the other end is connected to the opening and closing position indicating sign 4. The opening and closing position indicating sign 4 is rotatably connected to the opening and closing fixed support 3. The torsion spring 2 is sleeved on the opening and closing position indicating sign 4 and contacts the opening and closing fixed support 3. The cam 6 is provided with a wheel column 61, and the wheel column 61 is connected to one end of the spring 5. A column 41, B column 42 and C column 43 are provided on one side of the opening and closing position indicating sign 4, the A column 41 is connected to the other end of the spring 5, the B column 42 is in contact with one end of the torsion spring 2, the C column 43 is sleeved and connected with the torsion spring 2, and two areas are provided on the other side of the opening and closing position indicating sign 4, namely the opening area and the closing area, and a window 31, D column 32 and E column 33 are provided on the opening and closing fixed support 3, the position of the window 31 corresponds to the opening area and the closing area, the D column 32 is penetrated and connected in the C column 43, and the E column 33 is in contact with the other end of the torsion spring 2.

[0030] The cam 6 is fixed on the transmission main shaft 1, and the opening and closing position indicator plate 4 is connected to the wheel column 61 of the cam 6 through the spring 5. When the circuit breaker is opened, the spring 5 is not subjected to force, and the opening and closing position indicator plate 4 is limited to the opening area under the action of the torsion spring 2 and the B column 42, the C column 43, and the E column 33. When the circuit breaker is closed, the transmission main shaft 1 rotates to drive the cam 6 to move downward, the spring 5 is stretched, and the torsion spring 2 is compressed, and the opening and closing position indicator plate 4 is limited to the closing area, without manual adjustment, thereby improving production efficiency.

[0031] Figure 2 , Figure 3 The states of the various components change when the circuit breaker is in the open state and the closed state: the cam 6 rotates clockwise; the open and closed position indicator plate 4 changes from the open area to the closed area; the torsion spring 2 is compressed; and the spring 5 is stretched.

[0032] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0033] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0034] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A device for indicating the opening and closing positions of a circuit breaker in a ring main unit, characterized in that: The invention comprises a transmission main shaft (1), a torsion spring (2), a switch-opening and closing fixed support (3), a switch-opening and closing position indicating sign (4), a spring (5), and a cam (6); the cam (6) is fixed on the transmission main shaft (1); one end of the spring (5) is connected to the cam (6), and the other end is connected to the switch-opening and closing position indicating sign (4); the switch-opening and closing position indicating sign (4) is rotatably connected to the switch-opening and closing fixed support (3); the torsion spring (2) is sleeved on the switch-opening and closing position indicating sign (4) and is in contact with the switch-opening and closing fixed support (3).

2. The device for indicating the opening and closing positions of a circuit breaker of a ring main unit according to claim 1, characterized in that: The cam (6) is provided with a wheel column (61).

3. The device for indicating the opening and closing positions of the circuit breaker of the ring main unit according to claim 2 is characterized in that: The wheel column (61) is connected to one end of the spring (5).

4. The device for indicating the opening and closing positions of a circuit breaker of a ring main unit according to claim 1, characterized in that: An A column (41), a B column (42) and a C column (43) are provided on one side of the opening and closing position indicating sign (4).

5. The device for indicating the opening and closing positions of the circuit breaker of the ring main unit according to claim 4 is characterized in that: The A column (41) is connected to the other end of the spring (5), the B column (42) is in contact with one end of the torsion spring (2), and the C column (43) is sleeve-connected with the torsion spring (2).

6. The device for indicating the opening and closing positions of the circuit breaker of the ring main unit according to claim 4, characterized in that: The other side of the opening and closing position indication sign (4) is provided with two areas, namely an opening area and a closing area.

7. The device for indicating the opening and closing positions of the circuit breaker of the ring main unit according to claim 6, characterized in that: The switch-opening and closing fixed support (3) is provided with a window (31), a D column (32) and an E column (33).

8. The device for indicating the opening and closing positions of a circuit breaker of a ring main unit according to claim 7, characterized in that: The position of the window (31) corresponds to the opening area and the closing area.

9. The device for indicating the opening and closing positions of the circuit breaker of the ring main unit according to claim 8, characterized in that: The D-pillar (32) is connected through the C-pillar (43).

10. The device for indicating the opening and closing positions of a circuit breaker of a ring main unit according to claim 9, characterized in that: The E-pillar (33) contacts the other end of the torsion spring (2).

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