Novel isolation knife switch

Abstract

The utility model relates to the technical field of isolation disconnecting links, in particular to a novel isolation disconnecting link which comprises an installation seat stand, a wiring board is fixedly installed on the top, close to the rear side, of the installation seat stand, and a rotating main rod is rotationally connected to the surface, close to the front side, of the installation seat stand through a bearing. The surface of the rotating main rod is fixedly connected with a connecting sleeve, one side of the connecting sleeve is rotatably connected with a connecting knife switch through a positioning screw rod, and one end of the connecting knife switch is clamped and matched with the inner wall of the wiring board. The extension of the opening and closing handle can be carried out, and the connection position of the opening and closing handle and the isolation knife connecting shaft is deviated to the closing side, so that the length of the opening handle is longer, opening is carried out with smaller force within the specified opening use force range, and the labor-saving and stable opening and closing operation effect of the isolation knife switch on the pole-mounted circuit breaker is enhanced.

Description

Technical Field

[0001] The utility model relates to a novel isolation knife switch, belonging to the technical field of isolation knife switches. Background Art

[0002] Pole-mounted circuit breakers play a key role in intelligent distribution networks. Isolating knife switches are electrical devices used in pole-mounted circuit breakers. Their working principle and structure are relatively simple, but due to their large usage and high reliability requirements, they have a significant impact on the design, construction, and safe operation of substations and power plants. The main feature of the knife switch is that it has no arc extinguishing capability.

[0003] Since the integrated isolating knife switch of the current pole-mounted circuit breaker can better meet various experimental requirements when the clamping force is higher, the result is that a greater force is required to open the switch. The improvement of the handle length of the isolating knife switch has brought certain adverse effects on actual use, so it needs to be improved. Utility Model Content

[0004] The purpose of the utility model is to provide a new type of isolating knife switch. The utility model provides a labor-saving hand switch for labor-saving connection adjustment on the mounting base, so that the opening and closing handle can be extended. The connection position with the isolating knife connecting shaft is biased towards the closing side, so that the length of the opening handle is longer. Within the specified opening force range, the opening is performed with less force, thereby enhancing the labor-saving and smooth opening and closing operation effect of the isolating knife switch on the pole-mounted circuit breaker, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] The top of described sliding panel also is provided with an end face that is provided with an end face, and the sliding panel also is provided with an end face. The sliding panel also is provided with an end face. The sliding panel also is provided with an end face. The said end face is fixed with a up-down knob. The said up-down knob

[0007] Furthermore, a first spring with an anti-magnetic coating is fixedly installed on the top of the inner wall of the locking sliding plate, one end of the first spring is fixedly installed on the top of the sliding plate, and the contact ends of the first spring, the locking sliding plate and the sliding plate are all connected with damping pads, and two abutting magnetic plates are fixedly installed on the rear side of the inner wall of the locking sliding plate, and the surface of the abutting magnetic plate is magnetically abutted with the rear side of the sliding plate.

[0008] Furthermore, a guide groove is provided on the side surface of the inner wall of the locking sliding plate, a guide plate is fixedly connected to the side surface of the sliding plate, and the surface of the guide plate is slidably connected to the inner wall of the guide groove.

[0009] Furthermore, an insulating barrier plate is fixedly mounted on the lower surface of the inner wall of the mounting base, and the surface of the insulating barrier plate is coated with an anti-corrosion coating.

[0010] Furthermore, there are two fixing sleeves, and the two fixing sleeves are evenly located on both sides of the rotating main rod.

[0011] Furthermore, the main body of the adjustable labor-saving hand brake is a hollow frame plate, the inner wall of the hollow frame plate is slidably connected to an extension rod, a second spring is connected between the surface of the extension rod and the surface of the inner wall of the hollow frame plate through a damping pad, one end of the extension rod is fixedly connected to an insulating pull-button plate, the interior of the extension rod and the right side of the hollow frame plate are provided with connecting thread grooves, and the number of connecting thread grooves on the extension rod is at least five, and a sealing plug is clamped on the inner wall of the connecting thread groove on the hollow frame plate.

[0012] Furthermore, a positioning card plate is fixedly connected to the surface of the insulating pull-tab plate, and a positioning slot is provided on the surface of one end of the hollow frame plate. The inner wall of the positioning slot is engaged and adapted to the surface of the positioning card plate.

[0013] The beneficial effects of the utility model are:

[0014] The utility model can play the effect of assisting the labor-saving pulling by connecting the knife switch to the mounting base. That is, because the current at the circuit breaker on the pole is highly dangerous, the insulating hook rod can be buckled into the internal buckle groove of the insulating pull buckle plate, that is, the extension rod can be extended in the hollow frame plate for external pulling, and the second spring can be pulled into the stretched state, so that the length of the opening and closing handle can be extended, and the connection position with the isolating knife connecting shaft is biased towards the closing side, so that the length of the opening handle is longer, thereby realizing the length adjustment of the labor-saving hand brake, so that under normal circumstances, the internal structure of the labor-saving hand brake can be hidden and stored, avoiding the situation where the contact adjustment area of ​​the labor-saving hand brake is large and affects it due to the external environment. If it is convenient to adjust the pulling and opening and closing connection knife of the labor-saving hand brake in the future, the extension rod in the labor-saving hand brake can be pulled to a suitable position when it is not in use, and aligned with the connecting thread groove and After the threaded groove is connected in the hollow frame, the external connecting threaded rod is rotated and positioned, thereby determining the overall length of the adjustable labor-saving hand brake, realizing the rotation of the rotating main rod, and controlling the connection knife to pull upward to disconnect the connection in the terminal board. At the same time, the rotation of the main rod will drive the fixed sleeve to rotate, and the rotation of the fixed sleeve can drive the short rod to rotate. After the lengths of the short rod and the long rod are fixed and there is a steerable adjustable pin sleeve between them, the long rod is rotated upward to pull the sliding plate to slide and rise in the locking sliding plate, and the first spring is compressed. The magnetic sliding plate can be abutted by the abutting magnetic plate located below to perform reversing positioning and rotate the main rod to prevent it from loosening. Under the action of the guide plate and the guide groove, the deflection of the sliding plate during movement is reduced, so that the isolation knife switch can be opened with less force within the specified opening force range while increasing the clamping force. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the specific embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention.

[0016] Figure 1 This is a schematic diagram of the overall structure of a new type of isolation knife switch in the utility model;

[0017] Figure 2 This is a top sectional view of a novel isolation knife switch of the utility model;

[0018] Figure 3 This is a top sectional view of a labor-saving hand brake in a novel isolation knife switch of the utility model;

[0019] Figure 4 It is a side sectional view of a locking sliding sleeve plate in a novel isolation knife switch of the utility model;

[0020] Figure 5 This is an enlarged view of point A of a new type of isolation knife switch of the utility model;

[0021] Figure 6 This is an enlarged view of point B of a new type of isolation knife switch of the utility model;

[0022] Numbers in the figure: 1. Mounting base; 2. Terminal block; 3. Rotating main rod; 4. Connecting sleeve; 5. Connecting knife; 6. Fixed sleeve; 7. Short rod; 8. Long rod; 9. Sliding plate; 10. Locking sliding plate; 11. Adjusting labor-saving hand brake; 12. First spring; 13. Abutting magnetic plate; 14. Guide groove; 15. Guide plate; 16. Insulating barrier plate; 17. Extension rod; 18. Second spring; 19. Insulating pull-button plate; 20. Connecting threaded groove; 21. Sealing plug; 22. Positioning card plate; 23. Positioning card slot. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only 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 making creative efforts are within the scope of protection of the present invention.

[0024] Example 1, please refer to Figures 1-6 , the utility model provides a technical solution:

[0025] The top of described locking plate 10 is fixedly connected with the locking plate 11 by the locking cam 12, and the locking cam 13 is fixedly connected with the locking cam 14 by the locking cam 15.

[0026] Specifically, such as Figures 1-6As shown, a first spring 12 with an anti-magnetic coating is fixedly installed on the top of the inner wall of the locking sliding plate 10, one end of the first spring 12 is fixedly installed on the top of the sliding plate 9, and the contact ends of the first spring 12, the locking sliding plate 10 and the sliding plate 9 are all connected with damping pads, and two abutting magnetic plates 13 are fixedly installed on the rear side of the inner wall of the locking sliding plate 10, and the surface of the abutting magnetic plate 13 is magnetically abutted with the rear side of the sliding plate 9. A guide groove 14 is provided on the side of the inner wall of the locking sliding plate 10, and a guide plate 15 is fixedly connected to the side of the sliding plate 9. The surface of the guide plate 15 is slidably connected to the inner wall of the guide groove 14. The long rod 8 is pulled and rotated upward to pull the sliding plate 9 to slide and rise in the locking sliding plate 10, and the first spring 12 is compressed. The magnetic sliding plate 9 can be abutted through the abutting magnetic plate 13 located below to perform reversing positioning and rotating the main rod 3 to prevent it from loosening. Under the action of the guide plate 15 and the guide groove 14, the deflection of the sliding plate 9 during movement is reduced.

[0027] Specifically, such as Figures 1-6 As shown, an insulating barrier plate 16 is fixedly mounted on the lower surface of the inner wall of the mounting base 1, and the surface of the insulating barrier plate 16 is coated with an anti-corrosion coating. The insulating barrier plate 16 can be separated to prevent the components on the column-mounted circuit breaker from affecting each other.

[0028] Furthermore, there are two fixing sleeves 6, and the two fixing sleeves 6 are evenly located on both sides of the rotating main rod 3. The two fixing sleeves 6 and the adjustment structural parts connected thereto can stably support the adjustment effect.

[0029] Example 2, please refer to Figures 1-6The difference between this embodiment and embodiment 1 is that the main body of the labor-saving hand brake 11 is a hollow frame plate, and the inner wall of the hollow frame plate is slidably connected to an extension rod 17. A second spring 18 is connected between the surface of the extension rod 17 and the surface of the inner wall of the hollow frame plate through a damping pad. One end of the extension rod 17 is fixedly connected to an insulating pull-button plate 19. The interior of the extension rod 17 and the right side of the hollow frame plate are both provided with connecting thread grooves 20, and the number of connecting thread grooves 20 on the extension rod 17 is at least five. The inner wall of the connecting thread groove 20 on the hollow frame plate is clamped with a sealing plug 21. The surface of the insulating pull-tab plate 19 is fixedly connected to a positioning card plate 22, and a positioning card groove 23 is provided on the surface of one end of the hollow frame plate. The inner wall of the positioning card groove 23 is snapped and adapted to the surface of the positioning card plate 22. The extension rod 17 in the labor-saving hand brake 11 is adjusted to a suitable position, and the connecting thread groove 20 on the extension rod 17 and the connecting thread groove 20 in the hollow frame are aligned to rotate and position the external connecting thread rod, thereby determining the overall length of the labor-saving hand brake 11. Under the action of the positioning card plate 22 and the positioning card groove 23, the extension rod 17 can be normally accommodated and positioned in the hollow frame plate. The insulating hook rod is buckled into the internal buckle groove of the insulating pull-tab plate 19, so that the extension rod 17 can be extended in the hollow frame plate for external pulling, and the second spring 18 is pulled into a stretched state, so that the opening and closing handle can be extended.

[0030] The working principle of the utility model is that when in use, the staff can reduce the force of opening the circuit breaker at the top of the pole according to the lever principle. Because the pole circuit breaker has a high risk of current, the insulating hook rod can be buckled into the internal buckle groove of the insulating pull buckle plate 19, that is, the extension rod 17 can be extended in the hollow frame plate for external pulling, and the second spring 18 can be pulled into a stretched state, which can extend the opening and closing handle. The connection position with the isolating knife connecting shaft is biased towards the closing side, so that the length of the opening handle is longer, thereby realizing the adjustment of the length of the labor-saving hand brake 11, so that under normal circumstances, the internal structure of the labor-saving hand brake 11 can be hidden and stored to avoid the situation where the contact adjustment area of ​​the labor-saving hand brake 11 is large and affects it. If it is convenient to adjust the pulling and opening and closing connection knife 5 of the labor-saving hand brake 11 in the future, the extension rod 17 in the labor-saving hand brake 11 can be pulled to the appropriate position when not in use, and align the connecting thread groove 20 on the extension rod 17 with the connecting thread groove in the hollow frame. After 20, the external connecting threaded rod is rotated and positioned, thereby determining the overall length of the adjustment labor-saving hand brake 11, realizing the rotation of the rotating main rod 3, and the connection knife 5 can be controlled to be pulled upward to disconnect the connection in the terminal block 2. At the same time, the rotation of the main rod 3 will drive the fixed sleeve 6 to rotate, and the rotation of the fixed sleeve 6 can drive the short rod 7 to rotate. After the length of the short rod 7 and the long rod 8 is fixed and there is a pin shaft sleeve that can be adjusted in a directional manner, the long rod 8 is rotated upward to pull the sliding plate 9 to slide and rise in the locking sliding plate 10, and the first spring 12 is compressed. The magnetic sliding plate 9 can be abutted by the abutting magnetic attraction plate 13 located below to perform the reversing positioning and rotating main rod 3 to prevent it from loosening. Under the action of the guide plate 15 and the guide groove 14, the deflection of the sliding plate 9 during the movement is reduced, thereby making the isolation knife switch open with less force within the specified opening force range when increasing the clamping force, thereby enhancing the adjustment of the isolation knife switch on the column-mounted circuit breaker. The effect of effortless and smooth opening and closing operation.

[0031] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel isolating knife switch, comprising a mounting base (1), characterized in that: A terminal block (2) is fixedly mounted on the top of the mounting base (1) near its rear side, a rotating main rod (3) is rotatably connected to the surface of the mounting base (1) near its front side via a bearing, a connecting sleeve (4) is fixedly connected to the surface of the rotating main rod (3), one side of the connecting sleeve (4) is rotatably connected to a connecting knife (5) via a positioning screw, and one end of the connecting knife (5) is snap-fitted and adapted to the inner wall of the terminal block (2), and a fixed sleeve (6) is fixedly connected to the surface of the rotating main rod (3) near its one end. ), one end of the fixed sleeve (6) is fixedly connected to a short rod (7), the surface of the short rod (7) is rotatably connected to a long rod (8) through a pin sleeve with a torsion spring, one end of the long rod (8) is rotatably connected to a sliding plate (9) through a pin seat, the rear side of the inner wall of the mounting base (1) is fixedly connected to a locking sliding plate (10), the inner wall of the locking sliding plate (10) and the surface of the sliding plate (9) are slidably connected, and one end of the rotating main rod (3) is threadedly connected to an adjustable labor-saving hand brake (11) through a positioning screw.

2. A novel isolation knife switch according to claim 1, characterized in that: A first spring (12) with an anti-magnetic coating is fixedly installed on the top of the inner wall of the locking sleeve plate (10), one end of the first spring (12) is fixedly installed on the top of the sliding plate (9), and the contact ends of the first spring (12), the locking sleeve plate (10) and the sliding plate (9) are all connected with damping pads, and two abutting magnetic plates (13) are fixedly installed on the rear side of the inner wall of the locking sleeve plate (10), and the surface of the abutting magnetic plates (13) is magnetically abutted with the rear side of the sliding plate (9).

3. A novel isolation knife switch according to claim 2, characterized in that: A guide groove (14) is provided on the side of the inner wall of the locking sleeve plate (10), a guide plate (15) is fixedly connected to the side of the sliding plate (9), and the surface of the guide plate (15) is slidably connected to the inner wall of the guide groove (14).

4. A novel isolation knife switch according to claim 1, characterized in that: An insulating barrier plate (16) is fixedly mounted on the lower surface of the inner wall of the mounting base (1), and the surface of the insulating barrier plate (16) is coated with an anti-corrosion coating.

5. A novel isolation knife switch according to claim 1, characterized in that: The number of the fixing sleeves (6) is two, and the two fixing sleeves (6) are evenly located on both sides of the rotating main rod (3).

6. A novel isolation knife switch according to claim 1, characterized in that: The main body of the adjustable labor-saving hand brake (11) is a hollow frame plate, the inner wall of the hollow frame plate is slidably connected to an extension rod (17), a second spring (18) is connected between the surface of the extension rod (17) and the surface of the inner wall of the hollow frame plate via a damping pad, one end of the extension rod (17) is fixedly connected to an insulating buckle plate (19), the interior of the extension rod (17) and the right side of the hollow frame plate are both provided with connecting thread grooves (20), and the number of connecting thread grooves (20) on the extension rod (17) is at least five, and the inner wall of the connecting thread groove (20) on the hollow frame plate is clamped with a sealing plug (21).

7. A novel isolation knife switch according to claim 6, characterized in that: A positioning card plate (22) is fixedly connected to the surface of the insulating drawstring plate (19), and a positioning card slot (23) is provided on the surface of one end of the hollow frame plate. The inner wall of the positioning card slot (23) is engaged and adapted to the surface of the positioning card plate (22).

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