An isolating switch

Abstract

The present invention discloses a disconnector, which includes a pole switch body, a cross beam, an upper contact, a lower contact, an isolating blade, an insulating operating rod and an operating main shaft; the upper contact is fixed on the pole switch body through the pole switch; the lower contact is fixed on the cross beam through a support insulator; the isolating blade includes two pieces, one end of which is fixed on both sides of the upper contact, and the other end is fixed on both sides of the lower contact, and both ends are controlled by contact disc springs to control the contact pressure; one end of the insulating operating rod is rotatably connected to the isolating blade, and the other end is rotatably connected to the operating main shaft. By rotating the operating main shaft, the closing and opening of the isolating blade are controlled. It can meet the requirements of a pole switch with a small phase spacing of 240 mm, has a simple structure, a small volume and a light weight, is suitable for a miniaturized pole switch, the operating spring force value is adjustable, the operation is reliable, and it can withstand a rated short-circuit current of 25 kA / 4S, and can be matched with a pole switch with a rated short-circuit current of 25 kA / 4S.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical equipment, and particularly relates to a disconnector. Background Art

[0002] At present, for the disconnector supporting the pole column on the market, the phase spacing of the switch is relatively large, generally 280 mm - 340 mm. It is generally large in volume and weight, and the interlock structure is relatively complex. When opening the switch, it is necessary to disconnect the connection of the insulating operating rod for adjustment, and the opening distance adjustment is not convenient. During closing and opening, the springs cannot be adjusted, and the closing locking force is small. The disconnector can only withstand the rated short-circuit current of 20 kA / 4S and cannot be matched with the pole column switch with a rated short-circuit current of 25 kA / 4S. Summary of the Invention

[0003] The purpose of the present invention is to provide a disconnector to solve at least one of the above technical problems. It can meet the requirements of the pole column switch with a small phase spacing of 240 mm, has a simple structure, small volume, and light weight, is suitable for miniaturized pole column switches, the operating pressure spring force value is adjustable, operates reliably, can withstand the rated short-circuit current of 25 kA / 4S, and realizes the matching with the pole column switch with a rated short-circuit current of 25 kA / 4S.

[0004] The embodiments of the present invention are implemented as follows:

[0005] A disconnector includes a pole column switch body, a cross beam, an upper contact, a lower contact, an isolating blade, an insulating operating rod, and an operating main shaft.

[0006] The upper contact is fixed on the pole column switch body through the pole column switch.

[0007] The lower contact is fixed on the cross beam through a support insulator.

[0008] The isolating blade includes two pieces. One end of the isolating blade is fixed on both sides of the upper contact, or one end of the isolating blade is fixed on both sides of the lower contact. Both ends of the isolating blade are controlled by contact disc springs for the contact pressure.

[0009] One end of the insulating operating rod is rotatably connected to the isolating blade, and the other end is rotatably connected to the operating main shaft. By rotating the operating main shaft, the closing and opening of the isolating blade are controlled.

[0010] In a preferred embodiment of the present invention, a crank arm is provided on the operating main shaft of the above disconnector.

[0011] In a preferred embodiment of the present invention, an upper adjusting rod is fixed at the upper end of the insulating operating rod of the above disconnector, and a lower adjusting rod is fixed at the lower end.

[0012] The upper adjusting rod is rotatably connected to the isolating blade through an upper pin shaft.

[0013] The lower adjusting rod is rotatably connected to the crank arm through a lower pin shaft.

[0014] In a preferred embodiment of the present invention, the disconnecting switch further includes an interlocking shaft.

[0015] An interlocking support plate and an interlocking bent plate are provided on the pole switch body.

[0016] The interlocking support plate is fixedly connected to the pole switch body.

[0017] The interlocking bent plate rotates on the pole switch body.

[0018] One end of the interlocking shaft passes through two positioning holes on the interlocking support plate, and the other end is rotatably connected to the interlocking bent plate.

[0019] By rotating the interlocking bent plate, the interlocking shaft abuts against or separates from the crank arm to achieve five-prevention interlocking.

[0020] In a preferred embodiment of the present invention, left and right side plates are respectively fixed on the left and right sides of the cross beam of the disconnecting switch.

[0021] One end of the operating main shaft is fixed on the left side plate, and the other end is fixed on the right side plate.

[0022] In a preferred embodiment of the present invention, the disconnecting switch further includes a guide rod.

[0023] A set of limit bolts are provided on both the left side plate and the right side plate.

[0024] Each set of limit bolts includes a first limit bolt and a second limit bolt.

[0025] One end of the guide rod is connected to the crank arm, the crank arm is fixedly connected to the second limit bolt, and the other end of the guide rod is fixedly connected to the first limit bolt.

[0026] In a preferred embodiment of the present invention, one end of the guide rod of the disconnecting switch is connected to the crank arm through a left pin shaft, the crank arm is connected to the second limit bolt through an adjusting nut, the other end of the guide rod is sequentially sleeved with a first spring seat, an elastic member and a second spring seat, and the first spring seat abuts against the crank arm.

[0027] The elastic member is an operating compression spring.

[0028] In a preferred embodiment of the present invention, the disconnecting switch further includes an operating handle.

[0029] The operating handle is fixedly connected to the operating main shaft.

[0030] In a preferred embodiment of the present invention, one end of the isolating blade of the above-mentioned disconnecting switch is sequentially fixed on both sides of the upper contact through an upper contact bolt and a first self-locking nut, or one end of the isolating blade is sequentially fixed on both sides of the lower contact through a lower contact bolt and a second self-locking nut.

[0031] In a preferred embodiment of the present invention, magnetic lock plates are provided on both sides of the two isolating blades of the above-mentioned disconnecting switch.

[0032] The beneficial effects of the embodiments of the present invention are as follows:

[0033] (1) The contact compression spring of the disconnecting switch of the present invention adopts a disc spring, which can meet the requirements of a pole switch with a small phase distance of 240 mm.

[0034] (2) The dynamic contact sides of the blades of the disconnecting switch of the present invention are designed with hot-dip galvanized magnetic lock plates. The magnetic lock plates are of an asymmetric structure, which can effectively reduce the deformation of the isolating blades, ensure the contact pressure, can withstand a rated short-circuit current of 25 kA / 4S, and can be matched with a pole switch with a rated short-circuit current of 25 kA / 4S.

[0035] (3) The operating compression spring force value of the disconnecting switch of the present invention is adjustable. By adjusting the nut, the operating force and the self-closing force during closing can be adjusted, effectively improving the operation reliability of the product.

[0036] (4) The upper and lower adjusting rods of the insulating operating rod of the disconnecting switch of the present invention are designed with reverse-threaded threads, so that the opening distance during the opening of the switch can be adjusted only by rotating the insulating operating rod.

[0037] (5) The frame of the disconnecting switch of the present invention is an assembled structure of left and right side plates and a cross beam, with a simple structure, small volume and light weight, and is suitable for miniaturized pole switches. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0039] The disconnecting switch of the present invention will be further described in detail below with reference to the drawings and specific embodiments.

[0040] Figure 1 It is an exploded structure schematic diagram of the disconnecting switch of the present invention;

[0041] Figure 2 It is a partial exploded structure schematic diagram of the disconnecting switch of the present invention;

[0042] Figure 3Schematic structural diagram of the operating main shaft of the disconnector of the present invention.

[0043] In the figure: 1 - pole column switch body; 2 - operating handle; 3 - right side plate; 4 - limit bolt; 5 - interlock bent plate; 6 - interlock shaft; 7 - interlock support plate; 8 - operating main shaft; 81 - crank arm; 9 - cross beam; 10 - left side plate; 11 - first spring seat; 111 - second spring seat; 12 - elastic member; 13 - guide rod; 14 - adjusting nut; 15 - pin shaft; 16 - support insulator; 17 - lower contact; 18 - magnetic lock plate; 19 - lower contact bolt; 20 - contact disc spring; 21 - upper pin shaft; 211 - lower pin shaft; 22 - upper contact bolt; 23 - isolating blade; 24 - self-locking nut; 25 - upper contact; 26 - upper adjusting rod; 27 - insulating operating rod; 28 - lower adjusting rod. Detailed implementation manners

[0044] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Generally, the components of the embodiments of the present invention described and illustrated herein can be arranged and designed in various different configurations.

[0045] Some implementation manners of the present invention will be described in detail below with reference to the accompanying drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0046] Please refer to Figures 1 to 3 , an embodiment of the present invention provides a disconnector, including a pole column switch body 1, a cross beam 9, an upper contact 25, a lower contact 17, an isolating blade 23, an insulating operating rod 27 and an operating main shaft 8.

[0047] The upper contact 25 is fixed on the pole column switch body 1 through the pole column switch.

[0048] The lower contact 17 is fixed on the cross beam 9 through the support insulator 16.

[0049] The isolating blade 23 includes two pieces. One end of the isolating blade 23 is fixed on both sides of the upper contact 25, or one end of the isolating blade 23 is fixed on both sides of the lower contact 17. Both ends of the isolating blade 23 are controlled by contact disc springs 20 for contact pressure.

[0050] One end of the insulating operating rod 27 is rotatably connected to the isolating blade 23, and the other end is rotatably connected to the operating main shaft 8. By rotating the operating main shaft 8, the closing and opening of the isolating blade 23 are controlled.

[0051] In a preferred embodiment of the present invention, an elbow arm 81 is provided on the operating main shaft 8 of the disconnecting switch.

[0052] In a preferred embodiment of the present invention, an upper adjusting rod 26 is fixed to the upper end of the insulating operating rod 27 of the disconnecting switch, and a lower adjusting rod 28 is fixed to the lower end.

[0053] The upper adjusting rod 26 is rotatably connected to the isolating blade 23 through an upper pin shaft 21.

[0054] The lower adjusting rod 28 is rotatably connected to the elbow arm 81 through a lower pin shaft 211.

[0055] In a preferred embodiment of the present invention, the disconnecting switch further includes an interlocking shaft 6.

[0056] An interlocking support plate 7 and an interlocking bent plate 5 are provided on the pole column switch body 1.

[0057] The interlocking support plate 7 is fixedly connected to the pole column switch body 1.

[0058] The interlocking bent plate 5 rotates on the pole column switch body 1.

[0059] One end of the interlocking shaft 6 passes through two positioning holes on the interlocking support plate 7, and the other end is rotatably connected to the interlocking bent plate 5.

[0060] By rotating the interlocking bent plate 5, the interlocking shaft 6 abuts against or separates from the elbow arm to achieve five-prevention interlocking.

[0061] In a preferred embodiment of the present invention, left side plates 10 and right side plates 3 are respectively fixed to the left and right sides of the cross beam 9 of the disconnecting switch.

[0062] One end of the operating main shaft 8 is fixed to the left side plate 10, and the other end is fixed to the right side plate 3.

[0063] In a preferred embodiment of the present invention, the disconnecting switch further includes a guide rod 13.

[0064] A set of limit bolts 4 are provided on both the left side plate 10 and the right side plate 3.

[0065] Each set of limit bolts 4 includes a first limit bolt 41 and a second limit bolt 42.

[0066] One end of the guide rod 13 is connected to the elbow arm 81, the elbow arm 81 is fixedly connected to the second limit bolt 42, and the other end of the guide rod 13 is fixedly connected to the first limit bolt 41.

[0067] In a preferred embodiment of the present invention, one end of the guiding rod 13 of the disconnecting switch is connected to the toggle arm 81 through the left pin shaft 15. The toggle arm 81 is connected to the second limit bolt 42 through the adjusting nut 14. The other end of the guiding rod 13 is sequentially sleeved with a first spring seat 11, an elastic member 12, and a second spring seat 111. The first spring seat 11 abuts against the toggle arm 81.

[0068] The elastic member 12 is an operating compression spring.

[0069] In a preferred embodiment of the present invention, the disconnecting switch further includes an operating handle 2.

[0070] The operating handle 2 is fixedly connected to the operating main shaft 8.

[0071] In a preferred embodiment of the present invention, one end of the isolating blade 23 of the disconnecting switch is sequentially fixed on both sides of the upper contact 25 through the upper contact bolt 22 and the first self-locking nut 24, or one end of the isolating blade 23 is sequentially fixed on both sides of the lower contact 17 through the lower contact bolt 19 and the second self-locking nut.

[0072] In a preferred embodiment of the present invention, magnetic lock plates 18 are provided on both sides of the two isolating blades 23 of the disconnecting switch.

[0073] The embodiment of the present invention aims to protect a disconnecting switch, having the following effects:

[0074] 1. The contact compression spring of the disconnecting switch of the present invention uses a disc spring, which can meet the requirements of a pole column switch with a small phase spacing of 240 mm.

[0075] 2. Heat-dip galvanized magnetic lock plates are designed on both sides of the moving contact of the blade of the disconnecting switch of the present invention. The magnetic lock plates are of an asymmetric structure, which can effectively reduce the deformation of the isolating blade, ensure the contact pressure, can withstand a rated short-circuit current of 25 kA / 4S, and realize the matching with a pole column switch with a rated short-circuit current of 25 kA / 4S.

[0076] 3. The force value of the operating compression spring of the disconnecting switch of the present invention is adjustable. By adjusting the nut, the operating force and the self-closing force during closing can be adjusted, effectively improving the operation reliability of the product.

[0077] 4. The upper and lower adjusting rods of the insulating operating rod of the disconnecting switch of the present invention are designed with reverse-threaded threads, so that the opening distance during the opening of the switch can be adjusted only by rotating the insulating operating rod.

[0078] 5. The frame of the disconnecting switch of the present invention is an assembled structure of left and right side plates and a cross beam, with a simple structure, small volume, and light weight, suitable for a miniaturized pole column switch.

[0079] It should be understood that the above specific embodiments of the present invention are only used for illustrative explanation or interpretation of the principles of the present invention, and do not constitute a limitation on the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention shall be included within the protection scope of the present invention. In addition, the appended claims of the present invention are intended to cover all variations and modifications that fall within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A disconnector, characterized in that, It includes a pole switch body (1), a cross beam (9), an upper contact (25), a lower contact (17), an isolating blade (23), an insulating operating rod (27), an operating main shaft (8) and a guiding rod (13); The upper contact (25) is fixed on the pole switch body (1) through the pole switch; The lower contact (17) is fixed on the cross beam (9) through a support insulator (16); The isolating blade (23) includes two pieces. One end of the isolating blade (23) is fixed on both sides of the upper contact (25), or one end of the isolating blade (23) is fixed on both sides of the lower contact (17). Both ends of the isolating blade (23) are controlled by contact disc springs (20) for contact pressure; One end of the insulating operating rod (27) is rotatably connected to the isolating blade (23), and the other end is rotatably connected to the operating main shaft (8). By rotating the operating main shaft (8), the closing and opening of the isolating blade (23) are controlled; A crank arm (81) is arranged on the operating main shaft (8); Left side plates (10) and right side plates (3) are respectively fixed on the left and right sides of the cross beam (9); One end of the operating main shaft (8) is fixed on the left side plate (10), and the other end is fixed on the right side plate (3); A set of limit bolts (4) are arranged on both the left side plate (10) and the right side plate (3); Each set of the limit bolts (4) includes a first limit bolt (41) and a second limit bolt (42); One end of the guiding rod (13) is connected to the crank arm (81), the crank arm (81) is fixedly connected to the second limit bolt (42), and the other end of the guiding rod (13) is fixedly connected to the first limit bolt (41); One end of the guiding rod (13) is connected to the crank arm (81) through a left pin shaft (15), the crank arm (81) is connected to the second limit bolt (42) through an adjusting nut (14), and the other end of the guiding rod (13) is sequentially sleeved with a first spring seat (11), an elastic member (12) and a second spring seat (111), and the first spring seat (11) abuts against the crank arm (81); The elastic member (12) uses an operating compression spring.

2. The disconnecting switch according to claim 1, wherein An upper adjusting rod (26) is fixed to the upper end of the insulating operating rod (27), and a lower adjusting rod (28) is fixed to the lower end; The upper adjusting rod (26) is rotatably connected to the isolating blade (23) through an upper pin shaft (21); The lower adjusting rod (28) is rotatably connected to the crank arm (81) through a lower pin shaft (211).

3. The disconnector according to claim 1, characterized in that, It further includes an interlocking shaft (6); An interlocking support plate (7) and an interlocking bent plate (5) are provided on the pole switch body (1); The interlocking support plate (7) is fixedly connected to the pole switch body (1); The interlocking bent plate (5) rotates on the pole switch body (1); One end of the interlocking shaft (6) passes through two positioning holes on the interlocking support plate (7), and the other end is rotatably connected to the interlocking bent plate (5); By rotating the interlocking bent plate (5), the interlocking shaft (6) abuts against or separates from the crank arm.

4. The disconnecting switch according to claim 1, characterized in that, It further includes an operating handle (2); The operating handle (2) is fixedly connected to the operating main shaft (8).

5. The disconnecting switch according to claim 1, characterized in that One end of the isolating blade (23) is fixed on both sides of the upper contact (25) through an upper contact bolt (22) and a first self-locking nut (24) in sequence, or one end of the isolating blade (23) is fixed on both sides of the lower contact (17) through a lower contact bolt (19) and a second self-locking nut in sequence.

6. The disconnecting switch according to claim 1, characterized in that Magnetic lock plates (18) are provided on both sides of the two isolating blades (23).

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