CN201708448U - Low-pressure-side direct current ground switch - Google Patents
Low-pressure-side direct current ground switch Download PDFInfo
- Publication number
- CN201708448U CN201708448U CN2010201811966U CN201020181196U CN201708448U CN 201708448 U CN201708448 U CN 201708448U CN 2010201811966 U CN2010201811966 U CN 2010201811966U CN 201020181196 U CN201020181196 U CN 201020181196U CN 201708448 U CN201708448 U CN 201708448U
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- connecting rod
- assembling
- contact
- fingertip
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Abstract
The utility model relates to a low-pressure-side direct current ground switch, which comprises a static contact assembly, a ground-cutter connecting rod assembly, a crank arm connecting rod assembly, a direct current pillar insulator and a motor-driven operating mechanism, wherein the static contact assembly comprises a wiring board and a U-shaped guiding board fixed on the wiring board, the sides apart from openings of the wiring board and the U-shaped guiding board are fixedly connected, the lower part of the U-shaped guiding board is fixed with a contact fingers block, cotact fingers are respectively arranged at two sides of the contact finger block, the outer side of each contact finger is provided with a plate-shaped spring, one end of each plate-shaped spring is fixedly connected with the contact finger block, and the other end thereof is connected with the contact fingers through insulated rivets, and the button contacts extend out at the opening of the guiding block and are in inverted V shapes. The static contact assembly has simple and reliable structure, thus the low-pressure-side direct current ground switch has small product size, low cost and high reliability.
Description
Technical field
The utility model relates to a kind of low-pressure side DC grounding switch, particularly its ground connection fixed contact.
Background technology
At present, in DC engineering, the DC grounding switch that its current conversion station dc fields low-pressure side is adopted, adopt exchanges the earthed switch replacement more, for satisfying the requirement of direct current system creepage distance and high insulation, usually adopt 145kV to exchange earthed switch as the 50kV DC grounding switch, this product structure size is big, the cost height.And the direct earthed switch of prior art comprise fixed contact assembling, the assembling of cutter connecting rod, the assembling of connecting lever connecting rod, direct current post insulator, electric operating mechanism, the assembling of electric operating mechanism and moving connecting lever connecting rod is in transmission connection, and the assembling of connecting lever connecting rod drives ground cutter connecting rod assembling and fixed contact assembling deciliter; Its static contact structure is the outside dress of fingertip fingertip pressing plate mostly, adorns stage clip between fingertip and the pressing plate, assembles loaded down with trivial detailsly, and production efficiency is low, and spring comes off easily.
Summary of the invention
The purpose of this utility model provides a kind of simple and reliable for structure, low-cost, simple, the well behaved low-pressure side DC grounding switch of static contact structure.
For achieving the above object, the utility model adopts following technical scheme: a kind of low-pressure side DC grounding switch, comprise the fixed contact assembling, ground cutter connecting rod assembling, the assembling of connecting lever connecting rod, the direct current post insulator, electric operating mechanism, described fixed contact assembling comprises terminal block and goes up fixing U-shaped guide plate, terminal block is fixedlyed connected with the oral-lateral that keeps away of U-shaped guide plate, U-shaped guide plate bottom is fixed with the fingertip piece, fingertip piece both sides are fixed with fingertip respectively, plate shape spring all is equipped with in each fingertip outside, each plate shape spring one end is fixedlyed connected with the fingertip piece, the other end is connected with fingertip by insulated rivet, and described fingertip stretches out from the guide plate opening part, becomes splayed.
This fixed contact assembly structure is simple, is easy to assembling and durable.
Described ground connection knife bar assembling comprises contact and ground cutter connecting rod, contact is fixed on cutter connecting rod top, ground by the Wedge-type structure, described Wedge-type structure comprises wedge shape briquetting, contiguous block and screw, described contiguous block is fixedly connected on the ground cutter connecting rod by bearing pin, and described screw runs through the wedge shape briquetting and is threaded with contiguous block; Ground cutter connecting rod is fixed with the connecting rod bearing pin away from contact one end, and the output of connecting rod bearing pin and the assembling of connecting lever connecting rod is in transmission connection.Ground connection knife bar end inner chamber is processed into taper, and opening is arranged, and adopts the structure of voussoir expansion ground connection knife bar that contact and ground connection knife bar are tightened together between contact and the ground connection knife bar, and is simple and reliable for structure.
The assembling of described connecting lever connecting rod comprises: rocking arm, connecting lever connecting rod, tooth plate, self-lubricating spherical plain bearing rod end, grounded bracket and on the ground cutter shaft that is rotationally connected, the ground cutter shaft is in transmission connection by tooth plate, self-lubricating spherical plain bearing rod end, connecting lever connecting rod and rocking arm; The output of described connecting lever connecting rod assembling is located on the rocking arm, and rocking arm is in transmission connection with the connecting rod bearing pin of ground cutter connecting rod assembling.Electric operating mechanism is in transmission connection with the ground cutter shaft.
Described direct current post insulator adopts umbrella shape zanjon band rib structure, and its creepage distance is big, and antifouling ability is strong.
This DC grounding switch product size is little, and cost is low, the reliability height.
Description of drawings
Fig. 1 is a general assembly structural representation of the present utility model;
Fig. 2 is a fixed contact assembly structure schematic diagram;
Fig. 3 is a ground connection knife bar assembly structure schematic diagram;
Fig. 4 is a connecting lever connecting rod assembly structure schematic diagram.
Embodiment
DC grounding switch can be used for the low-pressure side of current conversion station dc fields, is mainly used in places such as smoothing reactor, neutral bus, earth electrode lead-in wire.Below with reference to accompanying drawing the utility model is described in further details.
As shown in Figure 1, DC grounding switch described in the utility model, it comprises ground connection fixed contact assembling 1, direct current post insulator 2, ground connection knife bar assembling 3, the assembling 4 of connecting lever connecting rod and electric operating mechanism 8, direct current post insulator 2 lower ends are fixed on base is welded, and ground connection fixed contact assembling 1 is installed on its top.
As shown in Figure 2, described fixed contact assembling 1, comprise terminal block 9 and go up fixing U-shaped guide plate 10, terminal block 9 is fixedlyed connected with the oral-lateral that keeps away of U-shaped guide plate 10, described U-shaped guide plate 10 bottoms are fixed with fingertip piece 11, fingertip piece 11 both sides are fixed with fingertip 14 respectively, plate shape spring 12 all is equipped with in each fingertip 14 outside, each plate shape spring 12 1 end is fixedlyed connected with fingertip piece 11, the other end is connected with fingertip 14 by insulated rivet 13, described fingertip 14 stretches out from guide plate 10 opening parts, becomes splayed.
Figure 3 shows that the ground connection knife bar assembling 3 of DC grounding switch, comprise ground cutter connecting rod 20 and contact part; Contact partly is the Wedge-type structure, described Wedge-type structure comprises contact 15, wedge shape briquetting 16, contiguous block 18 and attachment screw 17, contact 15 is sleeved on the valvular structure 21 of ground cutter connecting rod 20 ends, there is the seam of axial location effect together contact 15 inside, described contiguous block 18 is fixedly connected on the ground cutter connecting rod 20 by bearing pin 19, and described attachment screw 17 runs through wedge shape briquetting 16 and is threaded with contiguous block 18.During use attachment screw 17 is screwed, the stretching valvular structure 21 by extruding wedge shape briquetting 16, thus contact 15 is fixed on the ground cutter connecting rod 20.Ground cutter connecting rod 20 is fixed with connecting rod bearing pin 24 away from contact 15 1 ends, among rocking arm 30(Fig. 4 of connecting rod bearing pin 24 and connecting lever connecting rod assembling 4) be in transmission connection.
Connecting lever connecting rod shown in Figure 4 assembles 4 structures, connecting lever connecting rod assembling comprises: rocking arm 30, connecting lever connecting rod 29, tooth plate 28, self-lubricating spherical plain bearing rod end 27, grounded bracket 26 and on the ground cutter shaft 25 that is rotationally connected, ground cutter shaft 25 is in transmission connection with rocking arm 30 by tooth plate 28, self-lubricating spherical plain bearing rod end 27, connecting lever connecting rod 29, and the output of connecting lever connecting rod assembling is located on the rocking arm 30; In conjunction with Fig. 1, Fig. 3, be connected by connecting rod bearing pin 24 between an end of rocking arm 30 and the ground cutter connecting rod 20, the other end of rocking arm 30 is hinged with connecting lever connecting rod 29, and ground cutter shaft 25 is in transmission connection with electric operating mechanism 8.
When needs close a floodgate earthed switch, electric operating mechanism 8 is handled ground cutter shaft 25 and is rotated, be transferred to rocking arm 30; rocking arm 30 drive ground cutter connecting rods 20 in vertical plane on pendulum; the contact 15 that is installed in ground cutter connecting rod 20 ends then is electrically connected with fixed contact assembling 1 formation of direct current post insulator 2 upper ends, thereby is grounded the combined floodgate of switch.
Claims (4)
1. low-pressure side DC grounding switch, comprise the fixed contact assembling, ground cutter connecting rod assembling, the assembling of connecting lever connecting rod, the direct current post insulator, electric operating mechanism, it is characterized in that, described fixed contact assembling comprises terminal block and goes up fixing U-shaped guide plate, terminal block is fixedlyed connected with the oral-lateral that keeps away of U-shaped guide plate, U-shaped guide plate bottom is fixed with the fingertip piece, fingertip piece both sides are fixed with fingertip respectively, plate shape spring all is equipped with in each fingertip outside, each plate shape spring one end is fixedlyed connected with the fingertip piece, the other end is connected with fingertip by insulated rivet, and described fingertip stretches out from the guide plate opening part, becomes splayed.
2. a kind of low-pressure side DC grounding switch according to claim 1, it is characterized in that, described ground connection knife bar assembling comprises contact and ground cutter connecting rod, contact is fixed on cutter connecting rod top, ground by the Wedge-type structure, described Wedge-type structure comprises wedge shape briquetting, contiguous block and screw, described contiguous block is fixedly connected on the ground cutter connecting rod by bearing pin, and described screw runs through the wedge shape briquetting and is threaded with contiguous block; Ground cutter connecting rod is fixed with the connecting rod bearing pin away from contact one end, and the output of connecting rod bearing pin and the assembling of connecting lever connecting rod is in transmission connection.
3. a kind of low-pressure side DC grounding switch according to claim 2, it is characterized in that, the assembling of described connecting lever connecting rod comprises: rocking arm, connecting lever connecting rod, tooth plate, self-lubricating spherical plain bearing rod end, grounded bracket and on the ground cutter shaft that is rotationally connected, the ground cutter shaft is in transmission connection by tooth plate, self-lubricating spherical plain bearing rod end, connecting lever connecting rod and rocking arm; The output of described connecting lever connecting rod assembling is located on the rocking arm, and the connecting rod bearing pin of rocking arm and the assembling of described ground cutter connecting rod is in transmission connection; Described electric operating mechanism is in transmission connection with the ground cutter shaft.
4. according to claim 1 or 2 or 3 described a kind of low-pressure side DC grounding switch, it is characterized in that, the fixedly fixed contact assembling of the top of described direct current post insulator, insulator adopts umbrella shape zanjon band rib structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201811966U CN201708448U (en) | 2010-05-06 | 2010-05-06 | Low-pressure-side direct current ground switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201811966U CN201708448U (en) | 2010-05-06 | 2010-05-06 | Low-pressure-side direct current ground switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201708448U true CN201708448U (en) | 2011-01-12 |
Family
ID=43445599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201811966U Expired - Lifetime CN201708448U (en) | 2010-05-06 | 2010-05-06 | Low-pressure-side direct current ground switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201708448U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112151297A (en) * | 2020-09-29 | 2020-12-29 | 国网河南省电力公司经济技术研究院 | Spliced external hanging type bus grounding switch based on bus post insulator |
-
2010
- 2010-05-06 CN CN2010201811966U patent/CN201708448U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112151297A (en) * | 2020-09-29 | 2020-12-29 | 国网河南省电力公司经济技术研究院 | Spliced external hanging type bus grounding switch based on bus post insulator |
| CN112151297B (en) * | 2020-09-29 | 2022-11-15 | 国网河南省电力公司经济技术研究院 | Spliced external hanging type bus grounding switch based on bus post insulators |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Ma Yongxu Inventor after: Cheng Fenghua Inventor after: Liu Jianping Inventor after: Hu Yantao Inventor before: Ma Yongxu Inventor before: Cheng Fenghua Inventor before: Liu Jianping Inventor before: Hu Yantao |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110112 |