Isolating switch

Abstract

The utility model relates to the technical field of switches, in particular to an isolating switch. Comprising a base, insulating supporting columns are arranged on the two sides of the base, a first wire plate is arranged on the insulating supporting column on one side, a second wire plate is arranged on the insulating supporting column on the other side, and a sliding rotating shaft is arranged on a contact plate on the first wire plate; two knife plates of the flashboard are located on the two sides of the contact plate respectively, one ends of the knife plates are rotationally and slidably connected with the sliding rotating shaft, a pressing mechanism is arranged at the other end of the flashboard, a long hole is formed in the middle of the flashboard, the long hole is slidably connected with a sliding block, a rotating rod is rotationally connected to the base, and a crank arm and a pushing plate are arranged on the rotating rod; one end of the insulating rod is hinged to the crank arm, the other end of the insulating rod is rotationally connected with the sliding block, the two ends of the sliding block are exposed out of the two sides of the gate plate, when the sliding block moves to the bottom of the long hole, the two knife plates can be inwards pressed on the contact plate, and the pushing plate is hinged to a thrust mechanism capable of keeping the gate plate in the opening and closing states. According to the utility model, the gate plate and the contact plate are less abraded.

Description

Technical Field

[0001] The utility model relates to the technical field of switches, in particular to an isolating switch. Background Art

[0002] Disconnectors generally refer to high-voltage disconnectors, i.e. disconnectors with a rated voltage of 1 kV or above, usually referred to as disconnectors, and are the most commonly used type of electrical appliances in high-voltage switchgear. In the prior art disconnectors, the clamping structure of the gate plate and the contact plate is generally the same as the structure shown in the patent application number 202321361237.3 entitled a disconnector, wherein the connecting gate plate includes two blade plates, a support sleeve is located between the two blade plates, and a connecting bolt passes through the two blade plates and the support sleeve. A supporting spring is provided at one end of the connecting bolt so that the two blade plates can be pressed against both sides of the contact plate. This structure has high reliability. In the prior art, both ends of the gate plate have this clamping structure (one end has no supporting sleeve), but in actual use, one end of the gate plate is always in contact with the contact plate at that end, and the other end can be separated from the contact plate at that end, and it will move a long distance after separation, which results in more serious wear of the end that is always in contact with the contact plate when the gate plate rotates. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an isolating switch in view of the above-mentioned technical deficiencies.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a disconnector comprises a base in the shape of a square frame, insulating pillars are arranged on both sides of the base, a first wire plate is arranged on the insulating pillar on one side, and a second wire plate is arranged on the insulating pillar on the other side, a sliding shaft is arranged on the contact plate on the first wire plate, two knife plates of the gate plate are respectively located on both sides of the contact plate and one end thereof is rotatably and slidably connected with the sliding shaft, a clamping mechanism is arranged on the other end of the gate plate, a long hole is arranged in the middle of the gate plate, a slider is slidably connected with the long hole, a rotating rod is rotatably connected to the base, a crank arm and a push plate are arranged on the rotating rod, one end of the insulating rod is hinged to the crank arm and the other end is rotatably connected to the slider, two ends of the slider are exposed from both sides of the gate plate and when the slider moves to the bottom of the long hole, the two knife plates can be pressed inwardly on the contact plate, and the push plate is hinged with a thrust mechanism that can keep the gate plate in the open and closed states.

[0005] Furthermore, the slider includes an axis body, one end of the insulating rod is provided with an axis hole rotatably connected to the axis body, end blocks are provided on both sides of the axis body, the end blocks are slidably connected to the long holes, and a clamping block is provided at the lower part of the end block, and the inner side of the clamping block is inclined inward in a direction from bottom to top.

[0006] Furthermore, the thrust mechanism includes a push rod, one end of which is hinged to the push plate, and the other end of the push rod is inserted into a socket set on one side of the base and can swing up and down significantly relative to the socket. A thrust spring is sleeved on the outside of the push rod, and the end of the push rod close to the push plate has a larger diameter. The thrust spring is located between the end of the push rod close to the push plate and the base. When in the open state, the end of the push plate away from the rotating rod is located above the rotating rod, and when in the closed state, the end of the push plate away from the rotating rod is located below the rotating rod.

[0007] Furthermore, a T-shaped support plate is provided at one end of the rotating rod, and a first support column and a second support column are respectively provided on both sides of the support plate of the base.

[0008] Compared with the prior art, the utility model has the following advantages: a long hole is provided on the knife plate, and a slider is slidably connected in the long hole. When the slider moves to the bottom of the long hole, the two knife plates can be pressed inwardly onto the contact plate. When the slider is not at the bottom of the long hole, the two knife plates are not pressed inwardly onto the contact plate. Therefore, when the gate plate rotates, the friction between the contact plate on the first line plate and the knife plate is small for most of the time, thereby effectively reducing wear. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 The figure is a schematic diagram of the structure of an isolating switch.

[0010] Figure 2 for Figure 1 Magnified view of point I in the middle.

[0011] Figure 3 It is a schematic diagram of the gate structure.

[0012] Figure 4 This is a schematic diagram of the structure of the gate after removing the slider and sliding shaft.

[0013] Figure 5 A schematic diagram of the structure of the slider.

[0014] Figure 6 It is a schematic diagram of the structure of the insulating rod.

[0015] In the figure: 1. base; 11. first pillar; 12. second pillar; 2. rotating rod; 21. supporting plate; 22. curved arm; 23. pushing plate; 3. first wire plate; 4. gate plate; 41. knife plate; 42. clamping mechanism; 43. slider; 431. shaft body; 432. end block; 433. clamping block; 44. sliding shaft; 45. long hole; 5. second wire plate; 6. insulating rod; 61. shaft hole; 7. thrust mechanism; 71. push rod; 72. thrust spring. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0017] Specific implementation method: Combination Figure 1-6 As shown, a disconnector comprises a base 1 in the shape of a square frame, insulating pillars are arranged on both sides of the base 1, a first wire plate 3 is arranged on the insulating pillar on one side, and a second wire plate 5 is arranged on the insulating pillar on the other side, the first wire plate 3 and the second wire plate 5 are on the same straight line, a sliding shaft 44 is arranged on the contact plate on the first wire plate 3, two blade plates 41 of the gate plate 4 are respectively located on both sides of the contact plate and one end thereof is rotatably and slidably connected with the sliding shaft 44, so that the blade plate 41 can rotate around the sliding shaft 44, and when there is no external force, the pressure between the blade plate 41 and the first wire plate 3 is small, so that the friction force is small, end caps are arranged at both ends of the sliding shaft 44, and there is a gap between the end cap and the outer side of the blade plate 41, and a clamping mechanism 42 is arranged at the other end of the gate plate 4, and the structure of the clamping mechanism 42 is the same as that in the background technology, that is, a supporting sleeve is arranged between the two blade plates 41, and the supporting sleeve The length is slightly smaller than the thickness of the contact plate. The connecting bolt passes through the two blade plates 41 and the supporting sleeve. A supporting spring is arranged between one end of the connecting bolt and one blade plate 41. A nut is arranged on the outer side of the other blade plate 41. A long hole 45 is arranged in the middle of the gate plate 4. The long hole 45 is perpendicular to the extension direction of the blade plate 41 and is located close to the first line plate 3. The long hole 45 is slidably connected with a slider 43. The base 1 is rotatably connected with a rotating rod 2. The rotating rod 2 is provided with a crank arm 22 and a push plate 23. One end of the insulating rod 6 is hinged to the crank arm 22 and the other end is rotatably connected to the slider 43. The two ends of the slider 43 are exposed from both sides of the gate plate 4 and when the slider 43 moves to the bottom of the long hole 45, the two blade plates 41 can be pressed inwardly onto the contact plate on the first line plate 3. The push plate 23 is hinged with a thrust mechanism 7 that can keep the gate plate 4 in the open and closed states. Combined with Figure 1As shown, by rotating the rotating rod 2 counterclockwise, the right end of the gate plate 4 can be separated from the contact plate on the second line plate 5. At this time, the slider no longer presses the two blades 41 inward, and the friction between the contact plate on the first line plate 3 and the blade 41 is small, so the wear is small; by rotating the rotating rod 2 clockwise, when the right end of the gate plate 4 is not in contact with the contact plate on the second line plate 5, the right end of the gate plate 4 has a tendency to fall downward due to the action of gravity, and the slider 43 is almost not subjected to force. The blade 41 will not clamp the contact plate on the first line plate 3, so the friction between the two is very small. When the right end of the gate plate 4 contacts the contact plate on the second line plate 5, the slider 43 will push the blade 41 inward, so that the blade 41 clamps the contact plate on the first line plate 3. Since the friction between the contact plate on the first line plate 3 and the blade 41 is small most of the time when the gate plate 4 rotates, the wear is effectively reduced.

[0018] Specifically, the slider 43 includes a shaft body 431, one end of the insulating rod 6 is provided with a shaft hole 61 rotatably connected to the shaft body 431, end blocks 432 are provided on both sides of the shaft body 431, the end blocks 432 are slidably connected to the long hole 45, and a clamping block 433 is provided at the lower part of the end block 432. The inner side of the clamping block 433 is inclined inwardly from bottom to top. When the outer side of the knife plate 41 contacts the inner side of the clamping block 433, it will be pushed inward by the clamping block 433 so that the two knife plates 41 are close to each other, thereby clamping the contact plate on the first line plate 3.

[0019] Specifically, the thrust mechanism 7 includes a push rod 71, one end of which is hinged to the push plate 23, and the other end of which is inserted into a socket provided on one side of the base 1. The base 1 can be welded from channel steel, and the interior of which is a cavity. One end of the push rod 71 is inserted into the cavity through the socket. The diameter of the socket is larger than the diameter of the push rod 71, so that the push rod can swing up and down significantly relative to the socket. In order to prevent the push rod 71 from falling out of the socket, a nut that cannot pass through the socket is provided at one end of the push rod 71 in the cavity. A thrust spring 72 is provided on the outside, and the end of the push rod 71 close to the push plate 23 has a larger diameter. The thrust spring 72 is located between the end of the push rod 71 close to the push plate 23 and the base 1. When in the open state, the end of the push plate 23 away from the rotating rod 2 is located above the rotating rod 2, thereby preventing the right end of the gate plate 4 from falling down by itself. When in the closed state, the end of the push plate 23 away from the rotating rod 2 is located below the rotating rod 2, thereby preventing the right end of the gate plate 4 from rising by itself and enabling the slider 43 to keep pressing the two knife plates 41 inward.

[0020] Preferably, a T-shaped support plate 21 is provided at one end of the rotating rod 2, and a first support column 11 and a second support column 12 are provided on both sides of the support plate 21 of the base 1. Figure 1As shown, when in the open state, the left end of the support plate 21 contacts the top surface of the first pillar 11, and the rotating rod 2 cannot continue to rotate counterclockwise. In this case, a nut may not be provided at one end of the push rod 71 in the cavity; when in the closed state, the right end of the support plate 21 contacts the top surface of the second pillar 12, and the rotating rod 2 cannot continue to rotate clockwise.

[0021] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An isolating switch, comprising a base (1) in a square frame shape, wherein both sides of the base (1) are provided with insulating pillars, wherein a first wire plate (3) is provided on the insulating pillar on one side and a second wire plate (5) is provided on the insulating pillar on the other side, wherein: A sliding shaft (44) is provided on the contact plate on the first wire plate (3); two blade plates (41) of the gate plate (4) are respectively located on both sides of the contact plate and one end of each blade plate is rotatably and slidably connected to the sliding shaft (44); a clamping mechanism (42) is provided at the other end of the gate plate (4); a long hole (45) is provided in the middle of the gate plate (4); a sliding block (43) is slidably connected to the long hole (45); a rotating rod (2) is rotatably connected to the base (1); and the rotating rod (2) is rotatably connected to the base (1). A crank arm (22) and a push plate (23) are provided on the rod (2); one end of the insulating rod (6) is hinged to the crank arm (22) and the other end is rotatably connected to a slider (43); both ends of the slider (43) are exposed from both sides of the gate plate (4) and when the slider (43) moves to the bottom of the long hole (45), the two blade plates (41) can be pressed inwardly onto the contact plate; the push plate (23) is hinged to a thrust mechanism (7) capable of keeping the gate plate (4) in an open and closed state.

2. The isolating switch according to claim 1, characterized in that: The slider (43) comprises a shaft body (431); one end of the insulating rod (6) is provided with a shaft hole (61) rotatably connected to the shaft body (431); both sides of the shaft body (431) are provided with end blocks (432); the end blocks (432) are slidably connected to the long hole (45); a clamping block (433) is provided at the bottom of the end block (432); the inner side of the clamping block (433) is inclined inwardly in a direction from bottom to top.

3. The isolating switch according to claim 1, characterized in that: The thrust mechanism (7) comprises a push rod (71), one end of which is hinged to the push plate (23), the other end of which is inserted into a socket provided on one side of the base (1) and can swing up and down greatly relative to the socket, a thrust spring (72) is sleeved on the outside of the push rod (71), the end of which close to the push plate (23) has a larger diameter, the thrust spring (72) is located between the end of the push rod (71) close to the push plate (23) and the base (1), when in the open state, the end of the push plate (23) away from the rotating rod (2) is located above the rotating rod (2), and when in the closed state, the end of the push plate (23) away from the rotating rod (2) is located below the rotating rod (2).

4. An isolating switch according to any one of claims 1 to 3, characterized in that: A T-shaped support plate (21) is provided at one end of the rotating rod (2), and a first support column (11) and a second support column (12) are respectively provided on both sides of the support plate (21) of the base (1).

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