A high-voltage isolating switch convenient for maintenance

Abstract

The utility model discloses a high -tension isolator convenient to overhaul, including mounting seat, and mounting seat is cavity structure, and the middle part of mounting seat top is equipped with the rectangular hole, and both ends of mounting seat top are fixed with the insulator, and one insulator top is installed the contact seat, and another insulator top is installed the static contact, and the U -shaped frame is fixed in contact seat top, and the inside wall rotation is connected with the breaker in the U -shaped frame, and the inside wall rotation is connected with the pivot in the middle part of mounting seat. The utility model discloses through the cooperation of first rotating mechanism and second rotating mechanism, can make the breaker and static contact separate, realize the power -off purpose, need not through professional tool disassembly spare part mode operation, has simplified the overhaul procedure, has reduced the time required, thereby has improved work efficiency, through the limiting mechanism of design, the rotation of pivot is limited, avoids the misoperation and leads to the switch closing, thereby effectively prevents the electric shock accident, improves the security of equipment.

Description

Technical Field

[0001] This utility model relates to the field of high-voltage disconnect switch technology, and in particular to a high-voltage disconnect switch that is easy to maintain. Background Technology

[0002] A high-voltage disconnect switch is an electrical device mainly used in high-voltage power systems to disconnect or connect circuits. With the continuous development of power systems and the widespread application of high-voltage transmission technology, high-voltage disconnect switches, as an indispensable device in power systems, play a crucial role in power production and transmission in terms of reliability and safety. The main function of a high-voltage disconnect switch is to isolate circuits to ensure the safety of the equipment during maintenance and repair. High-voltage disconnect switches often require maintenance during use, thus necessitating a high-voltage disconnect switch that is easy to maintain.

[0003] Traditional high-voltage disconnect switches often have a complex structure, containing multiple mechanical parts and connectors. During maintenance, operators typically need to use specialized tools to disassemble multiple components in order to switch or repair the disconnect switch. This not only increases the time and difficulty of maintenance but also reduces work efficiency. Furthermore, traditional high-voltage disconnect switches lack effective limit functions in their design, failing to ensure that the switch is in a safe state during maintenance. This makes it easy for workers to accidentally touch the switch during maintenance operations, causing it to close. Such misoperation can lead to safety hazards such as electric shock for workers, thus seriously reducing the safety of the equipment. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a high-voltage disconnecting switch that is easy to maintain.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A high-voltage disconnecting switch for easy maintenance includes a mounting base with a cavity structure. A rectangular hole is formed in the center of the top of the mounting base. Insulators are fixed at both ends of the top of the mounting base. A contact seat is mounted on the top of one insulator, and a stationary contact is mounted on the top of the other insulator. A U-shaped frame is fixed to the top of the contact seat. A knife switch is rotatably connected to the inner wall of the U-shaped frame. A rotating shaft is rotatably connected to the center of the inner wall of the mounting base, with one end of the shaft passing through the outer wall of the mounting base. A first rotating mechanism for rotating the rotating shaft is provided on the outer wall of the mounting base. The device includes a second rotating mechanism for rotating the switch. The outer wall of the mounting base is equipped with a limiting mechanism to restrict the rotation of the rotating shaft. During use, when the limiting mechanism is released from restricting the rotating shaft, the first and second rotating mechanisms work together to separate the switch from the stationary contact, achieving power disconnection. This eliminates the need for disassembling parts using specialized tools, simplifying the maintenance process, reducing time, and improving work efficiency. The designed limiting mechanism restricts the rotation of the shaft, preventing accidental closure of the switch and effectively preventing electric shock accidents, thus improving equipment safety.

[0007] Preferably, the first rotating mechanism includes a turntable, which is fixed to one end of a rotating shaft. A handle is fixed in the middle of the outer side wall of the turntable. The second rotating mechanism includes two second connecting rods, which are symmetrically fixed in the middle of the side wall of the rotating shaft. A first connecting rod is rotatably connected to the inner side wall of the two second connecting rods. A connecting shaft is fixed to the inner side wall of the switch near the U-shaped frame, and one end of the first connecting rod is sleeved on the side wall of the connecting shaft. The handle, in conjunction with the turntable, drives the rotating shaft to rotate. The rotation of the rotating shaft, in conjunction with the second connecting rod, the first connecting rod, and the connecting shaft, drives the switch to rotate, causing one end of the switch to disengage from the stationary contact, thus putting the circuit in a de-energized state. This eliminates the need for disassembling parts with professional tools for switching or maintenance, reducing maintenance time and difficulty and improving work efficiency.

[0008] Preferably, the limiting mechanism includes a sleeve that is disposed through the side wall of the turntable. A circular slider is slidably connected to the inner side wall of the sleeve. A column is fixed to one end of the circular slider, and one end of the column passes through the outer side wall of one end of the sleeve. A pull rod is fixed to the other end of the circular slider, and one end of the pull rod passes through the outer side wall of the other end of the sleeve. A spring is sleeved on the side wall of the pull rod. A first circular hole and a second circular hole are provided on the outer side wall of the mounting base, and both the first and second circular holes are adapted to the column. When maintenance is required, the pull rod is first pulled to move the circular slider along the inner side of the sleeve. The wall moves until the column and the first circular hole disengage and enter the sleeve. At this point, the spring is in a compressed state, which releases the restriction on the rotating shaft. As the turntable continues to rotate, when the column rotates to the point where it coincides with the second circular hole, the reaction force of the compressed spring pushes the circular slider to move in the opposite direction, thereby driving the column to move in the opposite direction and allowing the column to enter the second circular hole. At this point, the turntable is in a locked state and no longer rotates, which can restrict the rotation of the rotating shaft. This can effectively prevent the switch from being closed due to accidental contact, prevent workers from being electrocuted, and thus improve the safety of the equipment.

[0009] Preferably, the mounting base has connecting plates fixed to its two symmetrical inner sidewalls. The tops of the two connecting plates are slidably connected to the same drawer, which is located below the rotating shaft. One end of the drawer extends through the outer sidewall of one end of the mounting base. During maintenance, the drawer can be pulled out from one end of the mounting base and placed in an open state, which facilitates workers to place parts and tools, further providing convenience for workers' maintenance.

[0010] The beneficial effects of this utility model are as follows:

[0011] 1. During use, when the limit mechanism restricts the rotating shaft, the first and second rotating mechanisms work together to separate the knife switch and the stationary contact, thus achieving the purpose of power disconnection. This eliminates the need for disassembling parts with professional tools, simplifying the maintenance process, reducing the required time, and improving work efficiency.

[0012] 2. By using a designed limit mechanism, the rotation of the shaft is restricted, preventing accidental closure of the switch and thus effectively preventing electric shock accidents and improving the safety of the equipment. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a high-voltage disconnect switch that is easy to maintain, as proposed in this utility model.

[0014] Figure 2 This is a cross-sectional schematic diagram of the mounting base for a high-voltage disconnector switch that is easy to maintain, as proposed in this utility model.

[0015] Figure 3This invention provides a schematic diagram of the first and second rotating mechanisms of a high-voltage disconnecting switch that is easy to maintain.

[0016] Figure 4 This is a cross-sectional schematic diagram of the turntable and sleeve of a high-voltage disconnecting switch that is easy to maintain, as proposed in this utility model.

[0017] Figure 5 This is a cross-sectional view of the mounting base for a high-voltage disconnect switch that is easy to maintain, as proposed in this utility model.

[0018] In the diagram: 1. Mounting base; 2. Insulator; 3. Contact seat; 4. U-shaped frame; 5. Knife switch; 6. Connecting shaft; 7. First connecting rod; 8. Stationary contact; 9. Rectangular hole; 10. Rotating shaft; 11. Second connecting rod; 12. Turntable; 13. Handle; 14. Sleeve; 15. First round hole; 16. Second round hole; 17. Drawer box; 18. Connecting plate; 19. Circular slider; 20. Column; 21. Pull rod; 22. Spring. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Reference Figures 1-5 A high-voltage disconnecting switch for easy maintenance includes a mounting base 1, which has a cavity structure. A rectangular hole 9 is provided in the middle of the top of the mounting base 1. Insulators 2 are fixed at both ends of the top of the mounting base 1. A contact seat 3 is installed on the top of one insulator 2, and a stationary contact 8 is installed on the top of the other insulator 2. A U-shaped frame 4 is fixed on the top of the contact seat 3. A knife switch 5 is rotatably connected to the inner wall of the U-shaped frame 4. A rotating shaft 10 is rotatably connected to the middle of the inner wall of the mounting base 1, and one end of the rotating shaft 10 passes through the outer wall of the mounting base 1. A first rotating mechanism for rotating the rotating shaft 10 is provided on the outer wall of the mounting base 1. The outer wall of the rotating shaft 10 is provided with... The second rotating mechanism for rotating the switch 5 has a limiting mechanism on the outer wall of the mounting base 1 for restricting the rotation of the rotating shaft 10. During use, when the limiting mechanism is released from restricting the rotating shaft 10, the switch 5 and the stationary contact 8 can be separated through the cooperation of the first and second rotating mechanisms to achieve the purpose of power disconnection. This eliminates the need for disassembling parts with professional tools, simplifies the maintenance process, reduces the required time, and improves work efficiency. The designed limiting mechanism restricts the rotation of the rotating shaft 10, preventing accidental closure of the switch and effectively preventing electric shock accidents, thus improving the safety of the equipment.

[0021] Furthermore, the first rotating mechanism includes a turntable 12, which is fixed to one end of the rotating shaft 10. A handle 13 is fixed in the middle of the outer wall of the turntable 12. The second rotating mechanism includes two second connecting rods 11, which are symmetrically fixed in the middle of the side wall of the rotating shaft 10. A first connecting rod 7 is rotatably connected to the inner side wall of the two second connecting rods 11. A connecting shaft 6 is fixed to one end of the inner side wall of the switch 5 near the U-shaped frame 4. One end of the first connecting rod 7 is sleeved on the side wall of the connecting shaft 6. The handle 13, in conjunction with the turntable 12, drives the rotating shaft 10 to rotate. The rotation of the rotating shaft 10, in conjunction with the second connecting rods 11, the first connecting rod 7, and the connecting shaft 6, drives the switch 5 to rotate, causing one end of the switch 5 to disengage from the stationary contact 8, thus putting the circuit in a de-energized state. This eliminates the need for disassembling parts with professional tools for switching or maintenance, reducing maintenance time and difficulty and improving work efficiency.

[0022] Furthermore, the limiting mechanism includes a sleeve 14, which is disposed through the side wall of the turntable 12. A circular slider 19 is slidably connected to the inner side wall of the sleeve 14. A column 20 is fixed to one end of the circular slider 19, and one end of the column 20 passes through the outer side wall of one end of the sleeve 14. A pull rod 21 is fixed to the other end of the circular slider 19, and one end of the pull rod 21 passes through the outer side wall of the other end of the sleeve 14. A spring 22 is sleeved on the side wall of the pull rod 21. A first circular hole 15 and a second circular hole 16 are provided on the outer side wall of the mounting base 1, and both the first circular hole 15 and the second circular hole 16 are adapted to the column 20. When maintenance work is required, the pull rod 21 is pulled first to drive the circular slider 19 along the sleeve 14. The inner wall moves until the column 20 and the first circular hole 15 disengage and enter the sleeve 14. At this time, the spring 22 is in a compressed state, which releases the restriction on the rotating shaft 10. As the turntable 12 continues to rotate, when the column 20 rotates to the point where it coincides with the second circular hole 16, the reaction force of the compressed spring 22 pushes the circular slider 19 to move in the opposite direction, thereby driving the column 20 to move in the opposite direction, so that the column 20 enters the second circular hole 16. At this time, the turntable 12 is in a locked state and no longer rotates, which can restrict the rotation of the rotating shaft 10. This can effectively prevent the switch from being closed due to accidental contact, prevent the staff from being electrocuted, and thus improve the safety of the equipment.

[0023] Furthermore, the mounting base 1 has two symmetrical inner sidewalls fixed with connecting plates 18. The top of the two connecting plates 18 is slidably connected to the same drawer box 17, and the drawer box 17 is located below the rotating shaft 10. One end of the drawer box 17 passes through the outer sidewall of one end of the mounting base 1. During maintenance, the drawer box 17 can be pulled out from one end of the mounting base 1 and is in an open state, which makes it convenient for workers to place parts and tools, and further facilitates the maintenance of workers.

[0024] Working Principle: During use, when maintenance is required, pull the lever 21 to move the circular slider 19 along the inner wall of the sleeve 14 until the column 20 and the first circular hole 15 disengage and enter the sleeve 14. At this time, the spring 22 is compressed, releasing the constraint on the rotating shaft 10. Then, the handle 13, in conjunction with the turntable 12, drives the rotating shaft 10 to rotate. The rotation of the rotating shaft 10, in conjunction with the second connecting rod 11, the first connecting rod 7, and the connecting shaft 6, drives the switch 5 to rotate, causing one end of the switch 5 to disengage from the stationary contact 8, thus de-energizing the circuit. No special tools are needed to disassemble the components. This allows for switching or maintenance, which not only reduces maintenance time and difficulty but also improves work efficiency. As the turntable 12 continues to rotate, when the column 20 rotates to the point where it overlaps with the second circular hole 16, the compressed spring 22 pushes the circular slider 19 to move in the opposite direction, thereby causing the column 20 to move in the opposite direction and enter the second circular hole 16. At this time, the turntable 12 is in a locked state and no longer rotates, which can restrict the rotation of the shaft 10. This can effectively prevent the switch from being closed due to accidental contact, prevent electric shock to workers, and thus improve the safety of the equipment.

[0025] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A high-voltage disconnect switch that is easy to maintain, comprising a mounting base (1), characterized in that, The mounting base (1) is a cavity structure. A rectangular hole (9) is opened in the middle of the top of the mounting base (1). Insulators (2) are fixed at both ends of the top of the mounting base (1). A contact seat (3) is installed on the top of one of the insulators (2), and a stationary contact (8) is installed on the top of the other insulator (2). A U-shaped frame (4) is fixed on the top of the contact seat (3). A knife switch (5) is rotatably connected to the inner side wall of the U-shaped frame (4). A rotating shaft (10) is rotatably connected in the middle of the inner side wall of the mounting base (1), and one end of the rotating shaft (10) passes through the outer side wall of the mounting base (1). A first rotating mechanism for rotating the rotating shaft (10) is provided on the outer side wall of the mounting base (1). A second rotating mechanism for rotating the knife switch (5) is provided on the outer side wall of the rotating shaft (10). A limiting mechanism for restricting the rotation of the rotating shaft (10) is provided on the outer side wall of the mounting base (1).

2. The high-voltage disconnecting switch for easy maintenance according to claim 1, characterized in that, The first rotating mechanism includes a turntable (12), which is fixed to one end of the rotating shaft (10), and a handle (13) is fixed in the middle of the outer side wall of the turntable (12).

3. A high-voltage disconnecting switch that is easy to maintain according to claim 1, characterized in that, The second rotating mechanism includes two second connecting rods (11), which are symmetrically fixed at the middle of the side wall of the rotating shaft (10). The inner side walls of the two second connecting rods (11) are rotatably connected to a first connecting rod (7). The inner side wall of the guillotine (5) near the U-shaped frame (4) is fixed with a connecting shaft (6), and one end of the first connecting rod (7) is sleeved on the side wall of the connecting shaft (6).

4. A high-voltage disconnecting switch that is easy to maintain according to claim 1, characterized in that, The limiting mechanism includes a sleeve (14), which is disposed through the side wall of the turntable (12). A circular slider (19) is slidably connected to the inner side wall of the sleeve (14). A column (20) is fixed to one end of the circular slider (19), and one end of the column (20) passes through the outer side wall of one end of the sleeve (14). A pull rod (21) is fixed to the other end of the circular slider (19), and one end of the pull rod (21) passes through the outer side wall of the other end of the sleeve (14). A spring (22) is sleeved on the side wall of the pull rod (21).

5. A high-voltage disconnecting switch that is easy to maintain according to claim 4, characterized in that, The mounting base (1) has a first round hole (15) and a second round hole (16) on its outer side wall, and both the first round hole (15) and the second round hole (16) are adapted to the column (20).

6. A high-voltage disconnecting switch that is easy to maintain according to claim 1, characterized in that, The mounting base (1) has two symmetrical inner sidewalls fixed with connecting plates (18). The tops of the two connecting plates (18) are slidably connected to the same drawer box (17), and the drawer box (17) is located below the rotating shaft (10). One end of the drawer box (17) passes through the outer sidewall of one end of the mounting base (1).

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