Anti-misoperation interlocking lock of grounding switch

Abstract

The utility model discloses a grounding switch anti-error interlock, which comprises a cabinet body and a switch door hinged to one side of the cabinet body, a hollow handle is arranged on one side of the switch door, a pressure sensor is fixedly arranged in the hollow handle, a plurality of connecting plates are fixedly arranged on one side, far away from the switch door, of the cabinet body, and the pressure sensor is fixedly arranged in the connecting plates. The connecting plates are connected with a grounding switch through a vacuum arc-extinguishing chamber, a plurality of second electric telescopic rods are fixedly arranged at the ends, close to the vacuum arc-extinguishing chamber, of the connecting plates, and the pressure sensors are in electric signal connection with the second electric telescopic rods. According to the utility model, when a worker opens the switch door, the pressure sensor can be pressed, so that the pressure sensor sends an electric signal to the second electric telescopic rod, and the second electric telescopic rod can push out the vacuum arc-extinguishing chamber connected with the grounding switch, thereby enabling the cabinet body to be powered off. And a mistaken touch phenomenon when a worker overhauls the cabinet body is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of grounding switches, in particular to an anti-mistake interlocking of a grounding switch. Background Art

[0002] In the process of medium and high voltage power distribution, the switch cabinet provides a place for electrical equipment to be accommodated. At the same time, in order to prevent operators from accidentally touching medium and high voltage electricity and causing personal injury, many manufacturers have added grounding switches to the switch cabinet. Grounding switches are protective devices used to protect power equipment and personnel from dangerous voltages, currents, arcs and overvoltages in the power system.

[0003] However, most devices equipped with grounding switches will still have current flowing through them when workers open them for maintenance. If the power supply is not completely disconnected in time, the workers will be exposed to the current, causing great harm to the workers.

[0004] To this end, we propose the grounding switch anti-mistake interlock Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes an anti-mistake interlocking for a grounding switch.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] The grounding switch anti-mistake interlock comprises a cabinet body and a switch door hinged on one side of the cabinet body, a hollow handle is arranged on one side of the switch door, a pressure sensor is fixedly arranged inside the hollow handle, a plurality of connecting plates are fixedly arranged on the side of the cabinet body away from the switch door, the connecting plates are connected to the grounding switch through a vacuum arc extinguishing chamber, a plurality of second electric telescopic rods are fixedly arranged on one end of the connecting plate close to the vacuum arc extinguishing chamber, and the pressure sensor is connected to the second electric telescopic rod by electrical signals.

[0008] As a further solution of the utility model: a push switch is slidably provided inside the hollow handle, the push switch is used to press the pressure sensor, and a plurality of plug rods are fixedly provided at one end of the switch door away from the hollow handle.

[0009] As a further solution of the utility model: a first electric telescopic rod is fixedly arranged inside the plug-in rod, and the plug-in rod is fixedly connected to a locking block through the first electric telescopic rod, and the locking block is used to fix the position of the switch door.

[0010] As a further solution of the utility model: a spring is arranged on the outer side of the first electric telescopic rod, and the pressure sensor is connected with the first electric telescopic rod by an electrical signal.

[0011] As a further solution of the utility model: a connecting lock is fixedly provided on one side of the cabinet, a plurality of plug-in slots are provided on the connecting lock, and the plug-in rods are plugged into the plug-in slots.

[0012] As a further solution of the utility model: a guide cylinder is fixedly provided on one side of the connecting plate close to the vacuum arc extinguishing chamber, the guide cylinder is plugged into the vacuum arc extinguishing chamber, and a contact piece for connecting with a grounding switch is fixedly provided on the bottom of the guide cylinder.

[0013] As a further solution of the utility model: a connecting disc is fixedly provided on the outer side of the vacuum interrupter, and the connecting disc is used for ejecting the vacuum interrupter.

[0014] Compared with the prior art, the utility model provides an anti-mistake interlocking of the grounding switch, which has the following beneficial effects:

[0015] 1. In the utility model, the pressure sensor arranged inside the hollow handle can be connected with the second electric telescopic rod arranged inside the cabinet through electrical signals. When the staff opens the switch door, they can press the pressure sensor, so that the pressure sensor sends an electrical signal to the second electric telescopic rod, so that the second electric telescopic rod can push out the vacuum interrupter chamber connected to the grounding switch, so that the cabinet can be powered off completely and in time, avoiding accidental touch when the staff is repairing the cabinet.

[0016] 2. The utility model, by arranging a push switch inside the hollow handle, can enable a faulty person to press the push switch when opening the switch door through the hollow handle, so that the push switch can be recovered to the inside of the hollow handle, thereby contacting and pressing the pressure sensor, and after the pressure sensor is pressurized, it can send a signal to the first electric telescopic rod, so that the first electric telescopic rod can drive the locking block to be recovered, so that the staff can open the switch door.

[0017] The parts not involved in the device are the same as those in the prior art or can be implemented by using the prior art. The utility model has a simple structure and is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the anti-mistake interlocking of the grounding switch proposed by the utility model;

[0019] Figure 2 This is a schematic diagram of the connection structure between the cabinet and the vacuum interrupter of the grounding switch anti-misinterlocking proposed by the utility model;

[0020] Figure 3 This is a schematic diagram of the internal structure of the hollow handle of the grounding switch for preventing mis-interlocking proposed by the utility model;

[0021] Figure 4 The utility model provides a schematic diagram of the structure of the plug-in rod and the locking block for preventing mis-interlocking of the grounding switch.

[0022] In the figure: 1. cabinet; 2. first electric telescopic rod; 3. switch door; 4. hollow handle; 5. plug-in rod; 6. connecting lock; 7. plug-in slot; 8. push switch; 9. connecting plate; 10. guide cylinder; 11. contact piece; 13. second electric telescopic rod; 14. vacuum arc extinguishing chamber; 15. connecting disc; 16. pressure sensor; 17. locking block; 18. spring. DETAILED DESCRIPTION

[0023] 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.

[0024] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying 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 direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0025] Example 1

[0026] The grounding switch is interlocked to prevent misoperation. Figure 1-Figure 4As shown, it includes a cabinet 1, and a switch door 3 hinged on one side of the cabinet 1, a hollow handle 4 is arranged on one side of the switch door 3, a pressure sensor 16 is fixedly arranged inside the hollow handle 4, a plurality of connecting plates 9 are fixedly arranged on the side of the cabinet 1 away from the switch door 3, the connecting plates 9 are all connected to the grounding switch through the vacuum interrupter 14, a plurality of second electric telescopic rods 13 are fixedly arranged on one end of the connecting plate 9 close to the vacuum interrupter 14, and the pressure sensor 16 is connected to the second electric telescopic rod 13 by electrical signals. By arranging the switch door 3 on one side of the cabinet 1, the staff can inspect the inside of the cabinet 1 by opening the switch door 3, and the pressure sensor 16 arranged inside the hollow handle 4 can also be used for maintenance. 6 can be connected to the second electric telescopic rod 13 arranged inside the cabinet 1 for electrical signal connection. When the staff opens the switch door 3, the pressure sensor 16 can be pressed, so that the pressure sensor 16 sends an electrical signal to the second electric telescopic rod 13, so that the second electric telescopic rod 13 can push out the vacuum interrupter 14 used to be connected to the grounding switch, so that the cabinet 1 can be completely powered off in time, avoiding the staff from accidentally touching the cabinet 1 when repairing the cabinet 1, and the vacuum interrupter 14 can quickly extinguish the arc and suppress the current to avoid reducing losses when a fault occurs. Arranging multiple connecting plates 9 can separate the grounding switches for connection, thereby avoiding misconnection of the grounding switches.

[0027] like Figure 1-Figure 4 As shown, a push switch 8 is slidably provided inside the hollow handle 4, and the push switch 8 is used to press the pressure sensor 16. A plurality of plug-in rods 5 are fixedly provided at one end of the switch door 3 away from the hollow handle 4, and a first electric telescopic rod 2 is fixedly provided inside the plug-in rods 5. The plug-in rods 5 are fixedly connected with a locking block 17 through the first electric telescopic rod 2. The locking block 17 is used to fix the position of the switch door 3. By arranging the push switch 8 inside the hollow handle 4, the faulty personnel can press the push switch 8 when opening the switch door 3 through the hollow handle 4, so that the push switch 8 can be recovered to the inside of the hollow handle 4, thereby contacting and pressing the pressure sensor 16, and the pressure sensor 16 can send a signal to the first electric telescopic rod 2 after being pressurized, so that the first electric telescopic rod 2 can drive the locking block 17 to be recovered, so that the staff can open the switch door 3.

[0028] like Figure 1-Figure 4 As shown, a spring 18 is provided on the outside of the first electric telescopic rod 2, and the pressure sensor 16 is electrically connected to the first electric telescopic rod 2. By sleeved with the spring 18 on the outside of the first electric telescopic rod 2, when the first electric telescopic rod 2 is not working, the locking block 17 can be compressed and the spring 18 can be compressed and recovered together. When the pressure on the locking block 17 is eliminated, the locking block 17 can be extended outward by the tension of the spring 18.

[0029] like Figure 1-Figure 4As shown, a connecting lock 6 is fixedly provided on one side of the cabinet 1, and a plurality of plug-in slots 7 are provided on the connecting lock 6. The plug-in rod 5 and the plug-in slot 7 are plugged in. By providing the plug-in slot 7 on one side of the cabinet 1, the plug-in rod 5 and the plug-in slot 7 can be plugged in. At the same time, the extension of the locking block 17 can fix the position of the plug-in rod 5 to prevent the switch door 3 from being unable to be locked.

[0030] like Figure 1-Figure 4 As shown, a guide cylinder 10 is fixedly provided on one side of the connecting plate 9 close to the vacuum arc chamber 14, and the guide cylinder 10 is plugged into the vacuum arc chamber 14. A contact piece 11 for connecting with the grounding switch is fixedly provided at the bottom of the guide cylinder 10, and a connecting disc 15 is fixedly provided on the outside of the vacuum arc chamber 14. The connecting disc 15 is used to eject the vacuum arc chamber 14. By arranging the guide cylinder 10 on one side of the connecting plate 9, the guide cylinder 10 can play a certain sliding guiding role, so that the vacuum arc chamber 14 can contact the contact piece 11 arranged at the bottom of the guide cylinder 10, so that the cabinet 1 can contact the grounding switch to restore power. At the same time, a connecting disc 15 is arranged on the outside of the vacuum arc chamber 14, which can make the second electric telescopic rod 13 contact with the connecting disc 15 when extending, so as to eject the vacuum arc chamber 14.

[0031] Working principle: By setting a switch door 3 on one side of the cabinet 1, the staff can open the switch door 3 to inspect the inside of the cabinet 1. At the same time, the pressure sensor 16 set in the hollow handle 4 can be connected with the second electric telescopic rod 13 set in the cabinet 1 for electrical signal. When the staff opens the switch door 3, they can press the pressure sensor 16, so that the pressure sensor 16 sends an electrical signal to the second electric telescopic rod 13, so that the second electric telescopic rod 13 can push out the vacuum interrupter 14 connected to the grounding switch, so that the cabinet 1 is powered off, avoiding the staff from inspecting the cabinet 1. At the same time, by arranging a push switch 8 inside the hollow handle 4, the fault personnel can press the push switch 8 when opening the switch door 3 through the hollow handle 4, so that the push switch 8 can be recovered to the inside of the hollow handle 4, thereby contacting and pressing the pressure sensor 16, and the pressure sensor 16 can send a signal to the first electric telescopic rod 2 after being pressurized, so that the first electric telescopic rod 2 can drive the locking block 17 to be recovered, so that the staff can open the switch door 3.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An anti-misoperation interlock for an earthing switch, comprising a cabinet (1), and a switch door (3) hinged to one side of the cabinet (1), It is characterized in that A hollow handle (4) is arranged on one side of the switch door (3), a pressure sensor (16) is fixedly arranged inside the hollow handle (4), a plurality of connection plates (9) are fixedly arranged on the side of the cabinet (1) away from the switch door (3), the connection plates (9) are connected to the grounding switch through a vacuum arc extinguishing chamber (14), a plurality of second electric telescopic rods (13) are fixedly arranged on one end of the connection plate (9) close to the vacuum arc extinguishing chamber (14), and the pressure sensor (16) is connected to the second electric telescopic rod (13) by electrical signals.

2. The grounding switch anti-mistake interlock according to claim 1, It is characterized in that A push switch (8) is slidably arranged inside the hollow handle (4), and the push switch (8) is used to press the pressure sensor (16). A plurality of plug-in rods (5) are fixedly arranged at one end of the switch door (3) away from the hollow handle (4).

3. The grounding switch anti-mistake interlocking according to claim 2, It is characterized in that A first electric telescopic rod (2) is fixedly arranged inside the plug-in rod (5), and the plug-in rod (5) is fixedly connected to a locking block (17) via the first electric telescopic rod (2), and the locking block (17) is used to fix the position of the switch door (3).

4. The grounding switch anti-mistake interlocking according to claim 3, It is characterized in that A spring (18) is provided on the outer side of the first electric telescopic rod (2), and the pressure sensor (16) is connected to the first electric telescopic rod (2) via an electrical signal.

5. The grounding switch anti-mistake interlocking according to claim 4, It is characterized in that A connection lock (6) is fixedly provided on one side of the cabinet (1), a plurality of plug-in slots (7) are provided on the connection lock (6), and the plug-in rod (5) is plugged into the plug-in slots (7).

6. The grounding switch anti-mistake interlock according to claim 1, It is characterized in that A guide cylinder (10) is fixedly arranged on one side of the connection plate (9) close to the vacuum interrupter (14); the guide cylinder (10) is plug-connected to the vacuum interrupter (14); and a contact piece (11) for connecting to a grounding switch is fixedly arranged at the bottom of the guide cylinder (10).

7. The grounding switch anti-mistake interlocking according to claim 6, It is characterized in that A connecting disc (15) is fixedly arranged on the outside of the vacuum interrupter (14), and the connecting disc (15) is used for ejecting the vacuum interrupter (14).

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