An automatic quick-release neutral line fuse insurance device

Abstract

The present invention belongs to the technical field of power supply insurance devices, and particularly relates to an automatic quick-release neutral line fuse insurance device, comprising a knife switch contact assembly, a knife switch cover assembly and a contact maintenance assembly; the knife switch contact assembly is a rectangular open structure, and the knife switch cover assembly is rotatably clamped at the opening of the knife switch contact assembly, and the contact maintenance assembly is rotatably connected to the inside of the knife switch contact assembly; the disassembly time of the neutral line contact and the live line contact is shortened by a push-pull quick-release method at the connection between the knife switch cover assembly and the knife switch contact assembly, and in the process of closing the connection of the knife switch contact assembly, the knife switch cover assembly utilizes the active fit between the contact maintenance assembly and the knife switch cover assembly to automatically polish the metal surfaces of the neutral line contact and the live line contact, thereby maintaining the maintenance effect of the neutral line contact and the live line contact after each closure, and maintaining the safety of the knife switch during each closing operation.

Description

Technical Field

[0001] The invention belongs to the technical field of power supply fuse devices, and in particular relates to an automatic quick-release neutral line fuse device. Background Art

[0002] Currently, when troubleshooting power outages, due to the TN-S power system, the neutral wire has no breakpoints and is fully connected. In case of short circuits or reverse connection of the neutral wire and ground wire, the neutral wire terminal must be manually removed. 1-2 electricians are required to cooperate in the operation. First, the upper power supply is cut off, and then the neutral wire is removed from the lower end to check for faulty cables. This is time-consuming, labor-intensive, and it is easy to accidentally touch the outer casing of the electrical box during the removal process, causing the main power switch to trip, affecting the normal power supply of the circuit breaker.

[0003] After searching, in the prior art, Chinese patent publication number CN214848327U, authorization announcement date: 2021-11-23, discloses a high-voltage electrical switch that can adjust the closing arc, including a switch seat, a through square groove is opened on the switch seat, a round shaft is connected inside the square groove, an arc-shaped piece for arc adjustment and fixing is provided on one side of the switch seat, a knife piece for closing arc adjustment is provided inside the square groove, a contact piece for connecting contact is provided at one end of the knife piece, and a limit piece for limiting the movement direction of the contact piece is provided on the other side of the switch seat. The closing and opening of the switch are controlled by arranging a knife piece inside the square groove on the switch seat, and the closing degree of the knife piece is controlled by arranging an arc-shaped piece on one side of the switch seat, thereby controlling the closing arc of the switch, and the contact piece is connected to the knife piece to cooperate with the knife piece to control the contact depth, and the moving direction of the contact piece is controlled by the limit piece. Through the cooperation between these structures, the problem that the closing arc of the existing high-voltage electrical switch is easy to change during use is solved.

[0004] However, the device still has the following defects: although it can solve the problem that the closing arc of the existing high-voltage electrical switch is prone to change during use, the way the knife is closed requires manual operation, which is time-consuming and labor-intensive, the disassembly process is not safe enough, and there are certain safety hazards when in use. Summary of the invention

[0005] In view of the above problems, the present invention provides an automatic quick-release neutral line fuse insurance device, comprising a knife switch contact assembly, a knife switch cover assembly and a contact maintenance assembly; the knife switch contact assembly is a rectangular open structure, and the knife switch cover assembly is rotatably clamped at the opening of the knife switch contact assembly, the contact maintenance assembly is rotatably connected to the inside of the knife switch contact assembly, and the contact maintenance assembly is movably fitted and connected to the knife switch cover assembly;

[0006] The connection between the knife switch cover assembly and the knife switch contact assembly adopts a push-pull quick-release method, which shortens the disassembly time of the neutral line contact and the live line contact. In the process of closing the connection of the knife switch contact assembly, the knife switch cover assembly utilizes the movable fit between the contact maintenance assembly and the knife switch cover assembly to automatically polish the metal surfaces of the neutral line contact and the live line contact, thereby maintaining the maintenance of the neutral line contact and the live line contact after each closure.

[0007] Furthermore, the knife switch contact assembly includes a knife switch housing; the knife switch housing is an open structure, and a splash-proof bottom plate is fixedly connected to the inner wall of the knife switch housing near the bottom end.

[0008] Furthermore, a first motor is arranged on the inner wall of the knife gate housing and on one side close to the splash-proof bottom plate, and angle adjustment grooves are opened on both sides of the outer wall of the knife gate housing, and the output end of the first motor extends into one group of the angle adjustment grooves.

[0009] Furthermore, embedded grooves are provided on both sides of the outer wall of the knife switch housing, and positioning grooves are provided on the tops of the two groups of embedded grooves. A neutral wire socket is provided on one side of the inner wall of the knife switch housing, and several groups of live wire sockets are provided on one side of the neutral wire socket at the same level.

[0010] Furthermore, the knife gate cover plate assembly includes a rubber cover; angle adjustment plates are provided on both sides of the bottom of the rubber cover, two groups of the angle adjustment plates are rotatably connected in the angle adjustment grooves, and one group of the angle adjustment plates is transmission connected to the output end of the first motor.

[0011] Furthermore, hinge seats are provided on both sides of the top of the rubber cover, and two groups of the hinge seats are movably clamped in the positioning grooves, and telescopic arms are rotatably connected to the two groups of hinge seats, and the ends of the two groups of telescopic arms are rotatably connected in the embedded grooves.

[0012] Furthermore, a neutral line contact is arranged on one side of the outer wall of the rubber cover, and a plurality of groups of live line contacts are arranged on one side of the neutral line contact at the same level, and the sizes of the plurality of groups of live line contacts are smaller than the size of the neutral line contact.

[0013] Furthermore, the contact maintenance assembly includes a linkage arm; a linkage rod is embedded and installed at one end of the linkage arm, one end of the linkage rod is transmission-connected to the output end of the second motor, and the other end of the linkage rod is rotationally connected to the inner wall of the knife switch housing.

[0014] Furthermore, one side of the second motor away from its output end is fixedly connected to the inner wall of the knife switch housing, the other end of the linkage arm is fixedly connected to the live wire maintenance seat, and a plurality of groups of first grinding cavities are opened at the bottom of the live wire maintenance seat.

[0015] Furthermore, several groups of the first grinding cavities are all fitted and connected to the outer wall of the live wire contact, a neutral wire maintenance seat is also provided at one end of the live wire maintenance seat, and a second grinding cavity is opened at the bottom of the neutral wire maintenance seat, and the second grinding cavity is fitted and connected to the outer wall of the neutral wire contact.

[0016] The beneficial effects of the present invention are:

[0017] 1. The disassembly time of the neutral contact and the live contact is shortened by the push-pull quick-release method at the connection between the knife switch cover assembly and the knife switch contact assembly. In the process of closing the connection of the knife switch contact assembly, the knife switch cover assembly uses the movable fit between the contact maintenance assembly and the knife switch cover assembly to automatically polish the metal surfaces of the neutral contact and the live contact, maintain the maintenance of the neutral contact and the live contact after each closure, and maintain the safety of the knife switch during each closing operation.

[0018] 2. During the process of separating the rubber cover from the knife switch housing, first several groups of live wire contacts are separated from the live wire sockets, and then the neutral wire contacts are separated from the neutral wire sockets, so that the neutral wire is disconnected later than the live wire during the opening process, thereby improving the safety of the knife switch when it is separated.

[0019] 3. During the closing process of the rubber cover and the knife switch housing, the neutral line contact is connected to the neutral line socket first, and then several groups of live line contacts are connected to the live line socket, so that the neutral line is closed before the live line during the closing process, thereby improving the safety of the knife switch when closing.

[0020] 4. The output end of the second motor is used to drive the linkage arm to rotate, so that after the rubber cover is in a separated state, the live wire maintenance seat and the neutral wire maintenance seat are moved out synchronously. When the rubber cover rotates, the neutral wire contact and the live wire contact are driven, so that the end of the neutral wire contact extends into the second grinding cavity, and the end of the live wire contact extends into the first grinding cavity. In the process of the neutral wire contact and the live wire contact gradually connecting with the socket, the metal surface is polished to eliminate the corrosion on the metal surface, so that the electric contact maintains the best state after each closure.

[0021] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It shows a schematic structural diagram of an automatic quick-release neutral wire fuse insurance device according to an embodiment of the present invention;

[0024] Figure 2 A schematic structural diagram of a knife switch contact assembly according to an embodiment of the present invention is shown;

[0025] Figure 3 A schematic structural diagram of a knife gate cover plate assembly according to an embodiment of the present invention is shown;

[0026] Figure 4 A schematic diagram of the structure of a contact maintenance assembly according to an embodiment of the present invention is shown;

[0027] Figure 5 A schematic diagram showing the connection between the contact maintenance assembly and the contacts according to an embodiment of the present invention is shown.

[0028] In the figure: 1. knife switch contact assembly; 11. knife switch housing; 12. splashproof bottom plate; 13. first motor; 14. angle adjustment slot; 15. embedded slot; 16. positioning slot; 17. neutral wire socket; 18. live wire socket; 2. knife switch cover assembly; 21. rubber cover; 22. angle adjustment plate; 23. hinge seat; 24. telescopic arm; 25. neutral wire contact; 26. live wire contact; 3. contact maintenance assembly; 31. linkage arm; 32. linkage rod; 33. second motor; 34. live wire maintenance seat; 35. first grinding chamber; 36. neutral wire maintenance seat; 37. second grinding chamber. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] The embodiment of the present invention provides an automatic quick-release neutral line fuse insurance device, comprising a knife switch contact assembly 1, a knife switch cover assembly 2 and a contact maintenance assembly 3; illustratively, as Figure 1 shown.

[0031] The knife switch contact assembly 1 is a rectangular open structure, and the knife switch cover assembly 2 is rotatably clamped at the opening of the knife switch contact assembly 1, the contact maintenance assembly 3 is rotatably connected to the inside of the knife switch contact assembly 1, and the contact maintenance assembly 3 is movably fitted and connected to the knife switch cover assembly 2.

[0032] Specifically, the connection between the knife switch cover assembly 2 and the knife switch contact assembly 1 adopts a push-pull quick-release method, which shortens the disassembly time of the neutral wire contact and the live wire contact. During the process of closing the connection between the knife switch contact assembly 1, the knife switch cover assembly 2 utilizes the movable fit between the contact maintenance assembly 3 and the knife switch cover assembly 2 to automatically polish the metal surfaces of the neutral wire contact and the live wire contact, thereby maintaining the maintenance of the neutral wire contact and the live wire contact after each closure.

[0033] The knife switch contact assembly 1 includes a knife switch housing 11; illustratively, as Figure 2 shown.

[0034] The knife gate housing 11 is an open structure, and a splash-proof bottom plate 12 is fixedly connected to the inner wall of the knife gate housing 11 and near the bottom end. A first motor 13 is arranged on the inner wall of the knife gate housing 11 and near the side of the splash-proof bottom plate 12. Angle adjustment grooves 14 are arranged on both sides of the outer wall of the knife gate housing 11, and the output end of the first motor 13 extends into one group of angle adjustment grooves 14. Embedded grooves 15 are arranged on both sides of the outer wall of the knife gate housing 11, and positioning grooves 16 are arranged on the tops of the two groups of embedded grooves 15. A neutral wire connector 17 is arranged on one side of the inner wall of the knife gate housing 11, and a plurality of groups of live wire connectors 18 are arranged on one side of the neutral wire connector 17 at the same level.

[0035] The knife gate cover assembly 2 includes a rubber cover 21; illustratively, as Figure 3 shown.

[0036] Angle adjustment plates 22 are provided on both sides of the bottom of the rubber cover 21, and two groups of the angle adjustment plates 22 are rotatably connected in the angle adjustment slot 14, and one group of the angle adjustment plates 22 is transmission-connected to the output end of the first motor 13. Hinge seats 23 are provided on both sides of the top of the rubber cover 21, and the two groups of the hinge seats 23 are movably engaged in the positioning slot 16, and telescopic arms 24 are rotatably connected to the two groups of hinge seats 23, and the ends of the two groups of telescopic arms 24 are rotatably connected in the embedded slot 15. A neutral line contact 25 is provided on one side of the outer wall of the rubber cover 21, and a plurality of groups of live line contacts 26 are also provided on one side of the neutral line contact 25 at the same level, and the size of the plurality of groups of live line contacts 26 is smaller than the size of the neutral line contact 25.

[0037] Specifically, the angle adjustment plate 22 is rotatably connected to the angle adjustment slot 14, so that manual adjustment can be performed during the flipping of the rubber cover 21, which is used for the rapid separation of the neutral contact 25 from the neutral socket 17, and the rapid separation of the live contact 26 from the live socket 18. The output end of the first motor 13 is used to drive a group of angle adjustment plates 22 to rotate, so that the rubber cover 21 is automatically flipped, which is used for remote electric control of the rapid separation of the neutral contact 25 from the neutral socket 17, and the rapid separation of the live contact 26 from the live socket 18;

[0038] During the separation of the rubber cover 21 from the switch housing 11, firstly, a plurality of groups of live wire contacts 26 are separated from the live wire socket 18, and then the neutral wire contacts 25 are separated from the neutral wire socket 17, so that the neutral wire is disconnected later than the live wire during the opening process;

[0039] During the closing process of the rubber cover 21 and the switch housing 11, the neutral line contact 25 is first connected to the neutral line socket 17, and then several groups of live line contacts 26 are connected to the live line socket 18, so that the neutral line is closed before the live line during the closing process.

[0040] The contact maintenance assembly 3 includes a linkage arm 31; illustratively, as Figure 4 and Figure 5 shown.

[0041] A linkage rod 32 is embedded in one end of the linkage arm 31, and one end of the linkage rod 32 is transmission-connected to the output end of the second motor 33, and the other end of the linkage rod 32 is rotatably connected to the inner wall of the knife switch housing 11, and the side of the second motor 33 away from its output end is fixedly connected to the inner wall of the knife switch housing 11, and the other end of the linkage arm 31 is fixedly connected to the live wire maintenance seat 34, and a plurality of groups of first grinding cavities 35 are provided at the bottom of the live wire maintenance seat 34, and the plurality of first grinding cavities 35 are all fitted and connected to the outer wall of the live wire contact 26, and a neutral wire maintenance seat 36 is also provided at one end of the live wire maintenance seat 34, and a second grinding cavity 37 is provided at the bottom of the neutral wire maintenance seat 36, and the second grinding cavity 37 is fitted and connected to the outer wall of the neutral wire contact 25.

[0042] Specifically, the output end of the second motor 33 drives the linkage arm 31 to rotate, so that after the rubber cover 21 is in a separated state, the live wire maintenance seat 34 and the neutral wire maintenance seat 36 are synchronously moved out. When the rubber cover 21 rotates, it drives the neutral wire contact 25 and the live wire contact 26, so that the end of the neutral wire contact 25 extends into the second polishing cavity 37, and the end of the live wire contact 26 extends into the first polishing cavity 35. In the process of gradually connecting the neutral wire contact 25 and the live wire contact 26 with the socket, the metal surface is polished to eliminate the corrosion on the metal surface, so that the electric contact maintains the best state after each closure.

[0043] The working principle of the automatic quick-release neutral line fuse device proposed by the embodiment of the present invention is as follows:

[0044] The angle adjustment plate 22 is rotatably connected to the angle adjustment slot 14, so that the rubber cover 21 can be manually adjusted during the flipping process, which is used for the rapid separation of the neutral contact 25 from the neutral socket 17, and the rapid separation of the live contact 26 from the live socket 18. The output end of the first motor 13 drives a group of angle adjustment plates 22 to rotate, so that the rubber cover 21 is automatically flipped, which is used for remote electric control of the rapid separation of the neutral contact 25 from the neutral socket 17, and the rapid separation of the live contact 26 from the live socket 18;

[0045] During the process of separating the rubber cover 21 from the switch housing 11, firstly, a plurality of groups of live wire contacts 26 are separated from the live wire socket 18, and then the neutral wire contacts 25 are separated from the neutral wire socket 17, so that the neutral wire is disconnected later than the live wire during the opening process;

[0046] During the closing process of the rubber cover 21 and the switch housing 11, the neutral contact 25 is first connected to the neutral socket 17, and then several groups of live contacts 26 are connected to the live socket 18, so that the neutral line is closed before the live line during the closing process;

[0047] The output end of the second motor 33 drives the linkage arm 31 to rotate, so that after the rubber cover 21 is in a separated state, the live wire maintenance seat 34 and the neutral wire maintenance seat 36 are moved out synchronously. When the rubber cover 21 rotates, it drives the neutral wire contact 25 and the live wire contact 26, so that the end of the neutral wire contact 25 extends into the second grinding cavity 37, and the end of the live wire contact 26 extends into the first grinding cavity 35. In the process of gradually connecting the neutral wire contact 25 and the live wire contact 26 with the socket, the metal surface is polished to eliminate the corrosion on the metal surface, so that the electric contact maintains the best state after each closure.

[0048] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An automatic quick-release neutral line fuse insurance device, characterized in that: The invention comprises a knife switch contact assembly (1), a knife switch cover assembly (2) and a contact maintenance assembly (3); the knife switch contact assembly (1) is a rectangular open structure, the knife switch cover assembly (2) is rotatably clamped at the opening of the knife switch contact assembly (1), the contact maintenance assembly (3) is rotatably connected to the inside of the knife switch contact assembly (1), and the contact maintenance assembly (3) is movably fitted and connected to the knife switch cover assembly (2); The connection between the knife switch cover assembly and the knife switch contact assembly adopts a push-pull quick-release method, which shortens the disassembly time of the neutral contact and the live contact. In the process of closing the connection of the knife switch contact assembly, the knife switch cover assembly uses the movable fit between the contact maintenance assembly and the knife switch cover assembly to automatically polish the metal surface of the neutral contact and the live contact, so as to maintain the maintenance of the neutral contact and the live contact after each closure; The knife switch contact assembly (1) comprises a knife switch housing (11); the knife switch housing (11) is an open structure, and a splash-proof bottom plate (12) is fixedly connected to the inner wall of the knife switch housing (11) near the bottom end; A first motor (13) is arranged on the inner wall of the knife gate housing (11) and on one side close to the splash-proof bottom plate (12); angle adjustment slots (14) are provided on both sides of the outer wall of the knife gate housing (11); an output end of the first motor (13) extends into one of the angle adjustment slots (14); Both sides of the outer wall of the knife switch housing (11) are provided with embedded grooves (15), and the tops of the two groups of embedded grooves (15) are provided with positioning grooves (16); one side of the inner wall of the knife switch housing (11) is provided with a neutral wire connection seat (17), and one side of the neutral wire connection seat (17) is provided with a plurality of groups of live wire connection seats (18) at the same level; The knife gate cover plate assembly (2) comprises a rubber cover (21); angle adjustment plates (22) are provided on both sides of the bottom of the rubber cover (21); two groups of the angle adjustment plates (22) are rotatably connected in the angle adjustment slots (14), and one group of the angle adjustment plates (22) is drivingly connected to the output end of the first motor (13); Hinge seats (23) are provided on both sides of the top of the rubber cover (21), and two groups of the hinge seats (23) are movably engaged in the positioning grooves (16), and telescopic arms (24) are rotatably connected to the two groups of the hinge seats (23), and the ends of the two groups of the telescopic arms (24) are rotatably connected to the embedded grooves (15); A neutral line contact (25) is arranged on one side of the outer wall of the rubber cover (21), and a plurality of groups of live line contacts (26) are arranged on one side of the neutral line contact (25) at the same level, and the sizes of the plurality of groups of live line contacts (26) are smaller than the sizes of the neutral line contact (25).

2. The automatic quick-release neutral line fuse device according to claim 1, characterized in that: The contact maintenance assembly (3) comprises a linkage arm (31); a linkage rod (32) is embedded and installed at one end of the linkage arm (31); one end of the linkage rod (32) is transmission-connected to the output end of a second motor (33); and the other end of the linkage rod (32) is rotatably connected to the inner wall of the knife switch housing (11).

3. The automatic quick-release neutral line fuse device according to claim 2, characterized in that: The side of the second motor (33) away from the output end thereof is fixedly connected to the inner wall of the knife switch housing (11), the other end of the linkage arm (31) is fixedly connected to a live wire maintenance seat (34), and a plurality of groups of first grinding cavities (35) are provided at the bottom of the live wire maintenance seat (34).

4. The automatic quick-release neutral line fuse device according to claim 3 is characterized in that: A plurality of groups of the first grinding cavities (35) are all closely connected to the outer wall of the live wire contact (26); a neutral wire maintenance seat (36) is further provided at one end of the live wire maintenance seat (34); and a second grinding cavity (37) is provided at the bottom of the neutral wire maintenance seat (36); the second grinding cavity (37) is closely connected to the outer wall of the neutral wire contact (25).

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