High-voltage vacuum switch

Abstract

The utility model provides a high-voltage vacuum switch, which comprises an operation box and a vacuum arc extinguishing box, a chute is arranged on the right side in the operation box, a rack is slidably arranged in the chute, a rotating shaft is rotatably arranged on the rear side in the operation box, a gear is sleeved on the annular side surface of the rotating shaft, the gear is meshed with the rack, and a thin plate is arranged above the rack. A first arc block is installed above the thin plate, a rotary knob for rotating a rotating shaft is arranged on the rear side of the operation box in a rotating mode, the front end of the rotating shaft is fixedly connected with a grounding knife moving contact, and the design solves the problems that when an original device is used, the grounding knife moving contact has no effective limiting effect, and great potential safety hazards exist if the grounding knife moving contact is loosened. The grounding knife moving contact is limited by using the elastic force of the spring, so that the potential safety hazard caused by the loosening of the grounding knife moving contact is greatly reduced, and the grounding knife switch is convenient to use and suitable for popularization and application.

Description

Technical Field

[0001] The utility model relates to a high-voltage vacuum switch, belonging to the technical field of high-voltage power distribution. Background Art

[0002] After the high-voltage vacuum switch is powered off, a high-voltage load (voltage) will remain on the pole of the outlet line, and these high voltages pose a great threat to human life safety. It is very dangerous to touch the pole directly without handling the participating charges. Therefore, when high-voltage power distribution workers are testing, maintaining or implementing power distribution plans for high-voltage circuits, they need to ground the outlet end and introduce the residual and induced voltage on the pole of the outlet line to a large area for maintenance and power distribution.

[0003] Chinese patent number: CN204067876U, mentions a high-voltage vacuum switch with a grounding knife, which is achieved by arranging the grounding knife operating shaft on the operating mechanism box and connecting it to the operating mechanism box; the grounding knife moving contact is installed on the grounding knife operating shaft, and the grounding knife moving contact is connected to the dedicated grounding point conductor on the operating mechanism box, thereby reducing the volume and weight of the high-voltage switch cabinet and making the structure inside the high-voltage switch cabinet more compact; there is no need to install an independent grounding switch, and the implementation of the power distribution plan is more convenient; the same operating mechanism box is used to interlock the two switches, and the safety performance is better. However, when this device is used, there is no effective limiting effect on the grounding knife moving contact. If it becomes loose, there is a great safety hazard. Now there is an urgent need for a high-voltage vacuum switch to solve the above problems. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a high-voltage vacuum switch to solve the problems raised in the above-mentioned background technology. The utility model has a reasonable structure and good practicality. By utilizing the spring force to limit the grounding knife moving contact, the safety hazard caused by the loosening of the grounding knife moving contact is greatly reduced. The utility model is easy to use and suitable for popularization and use.

[0005] In order to achieve the above-mentioned purpose, the utility model is realized through the following technical scheme: a high-voltage vacuum switch, comprising an operating box and a vacuum arc extinguishing box, a slide groove is provided on the right side of the operating box, a rack is slidably installed in the slide groove, a rotating shaft is rotatably installed on the rear side of the operating box, a gear is sleeved on the annular side of the rotating shaft, the gear is meshed with the rack, a thin plate is installed above the rack, a first arc block is installed above the thin plate, a knob for rotating the rotating shaft is rotatably provided on the rear side of the operating box, a grounding knife moving contact is fixedly connected to the front end of the rotating shaft, a rectangular frame is fixedly connected to the rear side of the operating box, a second spring is symmetrically installed on the left inner side of the rectangular frame, a second arc block is installed on the right end of two second springs, a plug-in strip is installed on the left side of the second arc block, a lower terminal of a pole is embedded on the right side of the vacuum arc extinguishing box, a grounding knife static contact is installed on the right side of the lower terminal of the pole, an upper terminal is embedded above the vacuum arc extinguishing box, and a through groove is opened through the rear side of the vacuum arc extinguishing box.

[0006] Furthermore, a fixing bar is installed at the lower end of the upper terminal, a static contact is installed below the fixing bar, a moving bar is installed longitudinally and slidably above the lower terminal of the pole, and a moving contact is installed at the upper end of the moving bar.

[0007] Furthermore, a mounting plate is installed on the rear side of the vacuum arc extinguishing box, a stabilizing column is longitudinally installed in the middle of the mounting plate, a pressing plate is installed on the upper end of the stabilizing column, a first spring is installed below the pressing plate, a magnetic plate is symmetrically installed below the pressing plate, power supplies are symmetrically installed above the mounting plate, electromagnetic plates are electrically installed above two power supplies respectively, an insulating plate is installed on the rear side of the mounting plate, and the insulating plate is connected to the movable bar.

[0008] Furthermore, the vacuum arc extinguishing box is arranged inside the operating box, an arc extinguishing box cover plate is movably installed on the front side of the vacuum arc extinguishing box, and an empty slot cover plate is movably installed above the operating box.

[0009] Furthermore, limiting grooves are respectively provided below the front and rear sides of the grounding knife static contact, and a limiting hole is provided through the upper end of the front side of the grounding knife moving contact.

[0010] Furthermore, the limiting hole is rectangular.

[0011] Beneficial effects of the utility model: the utility model is a high-voltage vacuum switch, because the utility model adds a first spring, a second spring, an electromagnetic plate, a gear, a rack and a plug-in strip, our design improvement and actual use show that the device has a reasonable structure and good practicality. The grounding knife moving contact is limited by the spring force, which greatly reduces the safety hazard caused by the loosening of the grounding knife moving contact. The utility model is easy to use and suitable for popularization and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0013] Figure 1 This is a three-dimensional schematic diagram of the overall structure of a high-voltage vacuum switch of the utility model;

[0014] Figure 2 This is a three-dimensional schematic diagram of the vacuum arc extinguishing box structure of a high-voltage vacuum switch of the utility model from a first angle;

[0015] Figure 3 This is a three-dimensional schematic diagram of the mounting plate structure of a high-voltage vacuum switch of the utility model;

[0016] Figure 4 This is a three-dimensional schematic diagram of the cross-sectional structure of a high-voltage vacuum switch of the utility model;

[0017] Figure 5 It is a three-dimensional schematic diagram of the vacuum arc extinguishing box structure at a second angle of a high-voltage vacuum switch of the utility model;

[0018] Figure 6 This is a three-dimensional schematic diagram of a rectangular frame structure of a high-voltage vacuum switch of the utility model;

[0019] Figure 7 This is a three-dimensional schematic diagram of the structure of the grounding knife moving contact of a high-voltage vacuum switch of the utility model;

[0020] In the figure: 1-operating box, 2-empty slot cover, 3-vacuum arc extinguishing box, 4-arc extinguishing box cover, 5-upper terminal, 6-through slot, 7-mounting plate, 8-pole lower terminal, 9-grounding knife static contact, 10-limiting slot, 11-pressing plate, 12-power supply, 13-electromagnetic plate, 14-magnetic plate, 15-stable column, 16-first spring, 17-insulating plate, 18-static contact, 19-fixed bar, 20-moving bar, 21-moving contact, 22-slide groove, 23-rack, 24-thin plate, 25-rotating shaft, 26-gear, 27-grounding knife moving contact, 28-rectangular frame, 29-first arc block, 30-second arc block, 31-plug-in bar, 32-second spring, 33-limiting hole. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] See also Figure 1-Figure 7The utility model provides a technical solution: a high-voltage vacuum switch, including an operating box 1 and a vacuum arc extinguishing box 3, a slide groove 22 is provided on the right side of the operating box 1, a rack 23 is slidably installed in the slide groove 22, a rotating shaft 25 is rotatably installed at the rear side of the operating box 1, a gear 26 is sleeved on the annular side of the rotating shaft 25, the gear 26 is meshed and connected with the rack 23, a thin plate 24 is installed above the rack 23, a first arc block 29 is installed above the thin plate 24, a knob for rotating the rotating shaft 25 is rotatably provided at the rear side of the operating box 1, a grounding knife moving contact 27 is fixedly connected to the front end of the rotating shaft 25, and a rotating shaft 25 is installed at the rear side of the operating box 1. A rectangular frame 28 is fixedly connected to the side, and a second spring 32 is symmetrically installed on the left inner side of the rectangular frame 28. A second arc block 30 is installed on the right end of the two second springs 32, and a plug-in strip 31 is installed on the left side of the second arc block 30. A lower pole terminal 8 is embedded on the right side of the vacuum arc extinguishing box 3, and a grounding knife static contact 9 is installed on the right side of the lower pole terminal 8. An upper terminal 5 is embedded on the top of the vacuum arc extinguishing box 3, and a through groove 6 is opened on the rear side of the vacuum arc extinguishing box 3. This design solves the problem that when the original device is used, there is no effective limiting effect on the grounding knife moving contact, and if looseness occurs, there will be great safety hazards.

[0023] As the first embodiment of the utility model: a fixing strip 19 is installed at the lower end of the upper terminal 5, a static contact 18 is installed below the fixing strip 19, a moving strip 20 is installed longitudinally and slidably above the lower terminal 8 of the pole, a moving contact 21 is installed at the upper end of the moving strip 20, and the moving strip 20 is provided to facilitate the moving contact 21 to move and then separate from the static contact 18. A mounting plate 7 is installed at the rear side of the vacuum arc extinguishing box 3, a stabilizing column 15 is longitudinally installed in the middle of the mounting plate 7, a pressing plate 11 is installed at the upper end of the stabilizing column 15, a first spring 16 is installed below the pressing plate 11, a magnetic plate 14 is symmetrically installed below the pressing plate 11, a power supply 12 is symmetrically installed above the mounting plate 7, and electromagnetic plates 13 are electrically installed above the two power supplies 12, an insulating plate 17 is installed at the rear side of the mounting plate 7, and the insulating plate 17 is connected to the moving strip 20, and the cooperation of the magnetic plate 14 and the electromagnetic plate 13 facilitates the limiting of the pressing plate 11, and then the limiting of the moving contact 21.

[0024] The vacuum arc extinguishing box 3 is arranged inside the operating box 1, and an arc extinguishing box cover plate 4 is movably installed on the front side of the vacuum arc extinguishing box 3, and an empty slot cover plate 2 is movably installed on the top of the operating box 1. Limiting slots 10 are respectively provided below the front and rear sides of the grounding knife static contact 9, and a limiting hole 33 is provided through the upper end of the front side of the grounding knife moving contact 27. By providing the limiting hole 33, it is convenient to cooperate with the plug strip 31 to limit the grounding knife moving contact 27. The limiting hole 33 is rectangular.

[0025] As the second embodiment of the utility model: when in use, first press the pressing plate 11 to move the stabilizing column 15 downward, thereby driving the moving bar 20 and the moving contact 21 downward, so that the moving contact 21 is separated from the static contact 18. At this time, the two magnetic plates 14 contact the two electromagnetic plates 13, and the two electromagnetic plates 13 are activated by the power supply 12 to adsorb the two magnetic plates 14, so that the moving contact 21 can be limited. Then, the rotating shaft 25 is rotated by the knob to rotate the grounding knife moving contact 27. At this time, the gear 26 rotates to drive the rack 23 to move upward, driving the thin plate 2 4 and the first arc block 29 move upward, the first arc block 29 squeezes the second arc block 30, the two second springs 32 contract, and the second arc block 30 drives the plug strip 31 to move. When the grounding knife moving contact 27 is located in the groove below the grounding knife static contact 9 and collides with the grounding knife static contact 9, the plug strip 31 will pass through the limiting groove 10 and the limiting hole 33 to limit the grounding knife moving contact 27, and connect the lower terminal 8 of the pole to the grounding wire of the power distribution system through the grounding knife and the special grounding point on the operation box 1, thereby ensuring the personal safety of the maintenance personnel.

[0026] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is defined by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0027] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A high-voltage vacuum switch, comprising an operating box (1) and a vacuum interrupter box (3), characterized in that: A slide groove (22) is provided on the right side of the operating box (1), a rack (23) is slidably installed in the slide groove (22), a rotating shaft (25) is rotatably installed on the rear side of the operating box (1), a gear (26) is sleeved on the annular side of the rotating shaft (25), the gear (26) is meshingly connected with the rack (23), a thin plate (24) is installed above the rack (23), a first arc block (29) is installed above the thin plate (24), a knob for rotating the rotating shaft (25) is rotatably provided on the rear side of the operating box (1), a grounding knife moving contact (27) is fixedly connected to the front end of the rotating shaft (25), and a rectangular frame (28) is fixedly connected to the rear side of the operating box (1); A second spring (32) is symmetrically mounted on the left inner side of the rectangular frame (28); a second arc block (30) is mounted on the right end of the two second springs (32); a plug-in strip (31) is mounted on the left side of the second arc block (30); a lower pole terminal (8) is embedded on the right side of the vacuum arc extinguishing box (3); a grounding knife static contact (9) is mounted on the right side of the lower pole terminal (8); an upper terminal (5) is embedded on the top of the vacuum arc extinguishing box (3); and a through slot (6) is provided through the rear side of the vacuum arc extinguishing box (3).

2. A high voltage vacuum switch according to claim 1, characterized in that: A fixing strip (19) is mounted at the lower end of the upper terminal (5), a stationary contact (18) is mounted below the fixing strip (19), a moving strip (20) is mounted longitudinally slidably above the lower terminal (8) of the pole, and a moving contact (21) is mounted at the upper end of the moving strip (20).

3. A high voltage vacuum switch according to claim 1, characterized in that: A mounting plate (7) is installed on the rear side of the vacuum arc extinguishing box (3), a stabilizing column (15) is longitudinally installed in the middle of the mounting plate (7), a pressing plate (11) is installed on the upper end of the stabilizing column (15), a first spring (16) is installed below the pressing plate (11), a magnetic plate (14) is symmetrically installed below the pressing plate (11), power supplies (12) are symmetrically installed above the mounting plate (7), and electromagnetic plates (13) are electrically installed above two power supplies (12), and an insulating plate (17) is installed on the rear side of the mounting plate (7), and the insulating plate (17) is connected to the moving bar (20).

4. A high voltage vacuum switch according to claim 1, characterized in that: The vacuum arc extinguishing box (3) is arranged inside the operating box (1), an arc extinguishing box cover plate (4) is movably mounted on the front side of the vacuum arc extinguishing box (3), and an empty slot cover plate (2) is movably mounted above the operating box (1).

5. A high voltage vacuum switch according to claim 1, characterized in that: Limiting grooves (10) are respectively provided below the front and rear sides of the grounding knife static contact (9), and a limiting hole (33) is provided through the upper front end of the grounding knife movable contact (27).

6. A high voltage vacuum switch according to claim 5, characterized in that: The limiting hole (33) is rectangular.

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