CN204189756U - The single-column all insulation crane that a kind of fail safe is good - Google Patents
The single-column all insulation crane that a kind of fail safe is good Download PDFInfo
- Publication number
- CN204189756U CN204189756U CN201420624608.7U CN201420624608U CN204189756U CN 204189756 U CN204189756 U CN 204189756U CN 201420624608 U CN201420624608 U CN 201420624608U CN 204189756 U CN204189756 U CN 204189756U
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- Prior art keywords
- contact
- arc
- insulator
- moving contact
- spring
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- 238000009413 insulation Methods 0.000 title claims abstract description 41
- 239000012212 insulator Substances 0.000 claims abstract description 38
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000010949 copper Substances 0.000 claims abstract description 16
- 229910052802 copper Inorganic materials 0.000 claims abstract description 16
- JRBRVDCKNXZZGH-UHFFFAOYSA-N alumane;copper Chemical compound [AlH3].[Cu] JRBRVDCKNXZZGH-UHFFFAOYSA-N 0.000 claims abstract description 7
- 230000003068 static effect Effects 0.000 claims description 14
- 239000004593 Epoxy Substances 0.000 claims description 9
- 238000010030 laminating Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 7
- 229910052782 aluminium Inorganic materials 0.000 description 7
- 239000004020 conductor Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 2
- 238000010891 electric arc Methods 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The utility model discloses the single-column all insulation crane that a kind of fail safe is good, comprise fuse and arc-extinguishing tube, also comprise barrel type insulation, insulator inner chamber upper and lower is respectively equipped with upper and lower fixed contact, upper and lower fixed contact extends to outside insulator respectively by the upper and lower binding post running through insulator wall, the middle part of insulator is provided with mounting bracket, and its lower end is connected with bonnet; Arc-extinguishing tube is arranged at the sub-inner chamber of barrel type insulation, its upper end is connected with top connection, moving contact is connected with above top connection, arc-extinguishing tube lower end is also connected with lower contact, arc-extinguishing tube outer wall cover has arc extinguishing spring and lower moving contact, fuse upper end is clamped and fastened between moving contact and top connection, and its lower end is downwards successively through top connection, arc-extinguishing tube and lower contact, then the screw rod be connected on lower moving contact of turning back; Described upper and lower moving contact connects upper and lower fixed contact respectively; Described upper connecting terminal and lower connecting terminal are copper bar, and the part that described copper bar is positioned at outside insulator is also provided with copper-aluminium joint connecting hole.
Description
Technical field
The utility model relates to circuit overload and short-circuit protection technical field, is specifically related to the single-column all insulation crane that a kind of fail safe is good.
Background technology
Drop type crane is a kind ofly applicable to rated voltage 10kV, rated current 200A and following, the distribution line of frequency 50HZ and the overload of distribution transformer and short-circuit protection, mainly comprise insulated leg, moving contact, fixed contact, arc-extinguishing tube and fuse, when crane is in closing position, dynamic and static contact is compressed by Compress Spring, to ensure there is enough pressure between contact, rotating torque spring is equipped with in arc-extinguishing tube lower end; After fuse loads, namely torque spring is tightened, and makes fuse be in tension, to ensure arc-extinguishing tube when closing position from contracting; When circuit overload or short circuit fuse failure, by means of the effect of torque spring, electric arc between the fuse broken in two is elongated rapidly, a large amount of arc extinguishing gases is produced in arc-extinguishing tube, electric arc is extinguished rapidly, to reduce the loss of arcing time and arc extinguishing material, after arc extinction, arc-extinguishing tube deadweight and bridge-shaped contact Compress Spring effect under automatically fall, form obvious visible fracture, the upper and lower contact of this drop type crane is in naked state respectively, cannot meet the requirement of all insulation, there is certain potential safety hazard.
There is a kind of single-column all insulation crane as shown in Figure 3 at present, be made up of barrel type insulation and arc-extinguishing tube, the sub-top of barrel type insulation and lower sides are respectively equipped with upper static contact and lower fixed contact, bottom is provided with bonnet, arc-extinguishing tube top is provided with the upper moving contact contacted with upper static contact, outer wall slidably connects the lower moving contact of fitting with lower fixed contact, fuse one end is connected to moving contact, the other end is connected to lower moving contact through turning back after arc-extinguishing tube, pass through tensioned, during fuse failure, Spring driving arc-extinguishing tube ejects to bonnet direction, the arc-extinguishing tube of this single-column all insulation crane is sealed in barrel type insulation, meet the requirement of all insulation, coefficient of safety is high, and reliability is high, but this single-column all insulation crane adopts copper conductor as upper, lower connecting terminal extends to outside insulator, can only directly be connected with the wire of outside line, the copper conductor be exposed at outside insulator must keep certain length on the one hand, to a whole set of insulator be caused to scrap once fracture, fail safe cannot be protected, useful life is short, maintenance cost is high, on the other hand, if what outside line adopted is aluminum conductor, due to cannot copper-aluminium joint be used, when directly connecting, copper reactive aluminum will occur causes aluminum conductor to be oxidized, time is slightly long, junction contact resistance can increase, heating, cause circuit switch-on and-off, voltage is fluctuated, even cause fire, poor stability, in a word, existing single-column all insulation crane adopts copper conductor as upper and lower binding post, causes directly to be connected with outer lead, poor stability.
Summary of the invention
The technical problems to be solved in the utility model is to provide the good single-column all insulation crane of a kind of fail safe, can solve existing single-column all insulation crane adopts copper conductor to extend to outside insulator as upper and lower binding post, existing causes a whole set of insulator to be scrapped because wire fractures, and is directly connected with aluminum conductor the problem of copper reactive aluminum occurs.
The utility model is achieved through the following technical solutions:
The single-column all insulation crane that a kind of fail safe is good, comprise fuse, arc-extinguishing tube, and barrel type insulation that upper end seals, lower end is uncovered, described insulator inner chamber upper and lower is respectively equipped with upper static contact and lower fixed contact, described upper static contact and lower fixed contact respectively by running through the upper connecting terminal of insulator wall, lower connecting terminal extends to outside insulator, the middle part of described insulator is provided with mounting bracket, and its uncovered lower end is sealedly connected with bonnet; Described arc-extinguishing tube is coaxially arranged at the sub-inner chamber of barrel type insulation, its upper end is connected with top connection, moving contact is connected with above described top connection, described arc-extinguishing tube lower end is also connected with lower contact, described top connection is communicated with the through hole of arc-extinguishing tube with lower contact is respectively equipped with, described arc-extinguishing tube outer wall cover has arc extinguishing spring and lower moving contact, described fuse upper end is clamped and fastened between moving contact and top connection, its lower end is downwards successively through top connection, arc-extinguishing tube and lower contact, to turn back again the screw rod being connected to and being arranged on lower moving contact, and gripped by nut; The length of described fuse makes the arc extinguishing spring between lower moving contact and lower contact be in compressive state; Described upper moving contact and lower moving contact are connected upper static contact and lower fixed contact respectively, and described upper connecting terminal and lower connecting terminal are copper bar, and the part that described copper bar is positioned at outside insulator is also provided with copper-aluminium joint connecting hole.
The sub-inwall of described barrel type insulation is also provided with anti-rotation catch, and described anti-rotation catch has towards the stopper of arc-extinguishing tube projection, and described stopper is corresponding with the position of the screw rod on lower moving contact.
Described anti-rotation catch is hook-type, and its straight-bar portion is fixedly connected on lower fixed contact, and hook portion is towards lower moving contact, and corresponding with the position of screw rod.
Described insulator inwall is also connected with epoxy sleeve, and described arc-extinguishing tube is coaxially arranged at epoxy barrel bore, and mounting bracket is connected between insulator inwall and epoxy sleeve outer wall, is fixed by straight pin.
Described insulator top is also provided with the upper spring cover of upper end open, lower end closed, and is connected to the top electrode of upper spring set upper side, and described top electrode is connected with upper connecting terminal; Be provided with connecting rod and upper spring in described upper spring cover, described small end is connected with upper spring lower end, and described upper spring upper end is connected with top electrode, and described small end is also connected with top electrode by the annealed copper wire running through upper spring; Upper spring cover lower surface is run through in described connecting rod lower end, and described upper static contact upper end is fixedly connected on connecting rod, and lower end and upper moving contact are fitted.
Described insulator bottom be radially provided with inner to close, the top stem casing of outer end opening, and be connected to the bottom electrode of top stem casing openend, coaxial push rod and push rod spring is also provided with in described top stem casing, described push rod spring two ends connect push rod and bottom electrode respectively, and described bottom electrode connects lower connecting terminal; Described lower fixed contact is n shape, its inwall is connected with the identical spring leaf of shape with it, described lower fixed contact side outer wall laminating lower moving contact outer wall, described top stem casing is inner to be extended to spring leaf two side through lower fixed contact and another sidewall of spring leaf, and described push rod one end passes from top stem casing the inner and fits in spring leaf inwall.
Described insulator lower end is also connected with coaxial insulation tube connector, and bonnet connects the lower port of insulation tube connector.
The utility model advantage is compared with prior art:
One, copper bar is arranged copper-aluminium joint connecting hole, the length requirement exposing insulator is reduced, thus reduces the risk fractureed, thus improve fail safe and useful life;
Two, be connected with external aluminium wire by copper-aluminium joint, effectively avoid directly connecting the copper reactive aluminum occurred, guarantee that circuit is unimpeded, and fail safe is good.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the part A enlarged drawing of Fig. 1.
Fig. 3 is the structural representation of existing single-column all insulation crane.
Embodiment
The single-column all insulation crane that a kind of fail safe is as depicted in figs. 1 and 2 good, comprise fuse 8, arc-extinguishing tube 12, and upper end sealing, barrel type insulation 14 that lower end is uncovered, described insulator 14 inwall is also connected with epoxy sleeve 13, described insulator 14 top is provided with upper connecting terminal 1, upper static contact 6, the upper spring cover 5 of upper end open lower end closed, and be connected to the top electrode 3 that upper spring overlaps 5 upper ends, described upper connecting terminal 1 runs through insulator 14 top, described top electrode 3 is connected with upper connecting terminal 1, connecting rod and upper spring is provided with in described upper spring cover 5, described small end is connected with upper spring lower end, described upper spring upper end is connected with top electrode 3, described small end is also connected with top electrode 3 by the annealed copper wire 4 running through upper spring, described connecting rod lower end is run through upper spring and is overlapped 5 lower surfaces, described upper static contact 6 upper end is fixedly connected on connecting rod, described insulator 14 bottom is radially provided with lower fixed contact 16, lower connecting terminal 23, the inner top stem casing 18 closing outer end opening, and be connected to the bottom electrode 21 of top stem casing 18 openend, described lower connecting terminal 23 runs through the wall of insulator 14, coaxial push rod 19 and push rod spring 20 is also provided with in described top stem casing 18, described push rod spring 20 two ends connect push rod 19 and bottom electrode 21 respectively, described bottom electrode 21 connects lower connecting terminal 23, described lower fixed contact 16 is in n shape, its inwall is connected with the identical spring leaf of shape with it 17, described top stem casing 18 is inner to be extended to spring leaf 17 two side through lower fixed contact 16 and another sidewall of spring leaf 17, described push rod 19 one end passes from top stem casing 18 the inner and fits in spring leaf 17 inwall, described lower fixed contact 16 is respectively equipped with two covers with corresponding spring leaf 17, top stem casing 18, push rod 19, push rod spring 20, is symmetricly set on lower moving contact 15 both sides, described arc-extinguishing tube 12 is coaxially arranged at epoxy sleeve 13 inner chamber, its upper end is connected with top connection 9, moving contact 7 is connected with above described top connection 9, described arc-extinguishing tube 12 lower end is also connected with lower contact 28, described top connection 9 is respectively equipped with in lower contact 28 through hole being communicated with arc-extinguishing tube 12, described arc-extinguishing tube 12 outer wall cover has arc extinguishing spring 27 and lower moving contact 15, described fuse 8 upper end is clamped and fastened between moving contact 7 and top connection 9, its lower end is downwards successively through top connection 9, arc-extinguishing tube 12 and lower contact 28, turn back again and be connected to lower moving contact 15, the length of described fuse 8 makes the arc extinguishing spring 27 between lower moving contact 15 and lower contact 28 be in compressive state, described upper moving contact 7 and lower moving contact 15 are connected laminating upper static contact 6 and lower fixed contact 16 respectively, described barrel type insulation 14 inwalls are also provided with anti-rotation catch 24, described anti-rotation catch 24 is in hook-type, its straight-bar portion is fixedly connected on lower fixed contact 16, hook portion is towards lower moving contact 15, and it is corresponding with the position of screw rod 25, described upper connecting terminal 1 and lower connecting terminal 23 are copper bar, and the part that described copper bar is positioned at outside insulator 14 is also provided with copper-aluminium joint connecting hole.
The middle part of described insulator 14 is within it provided with between wall and epoxy sleeve 13 outer wall by the fixing mounting bracket 10 of straight pin 11, and its uncovered lower end is connected with coaxial insulation tube connector 29, and the lower port of insulation tube connector 29 is sealedly connected with bonnet 30.
Claims (7)
1. the single-column all insulation crane that a fail safe is good, comprise fuse (8), arc-extinguishing tube (12), and upper end sealing, barrel type insulation (14) that lower end is uncovered, described insulator (14) inner chamber upper and lower is respectively equipped with upper static contact (6) and lower fixed contact (16), described upper static contact (6) and lower fixed contact (16) are respectively by the upper connecting terminal (1) running through insulator (14) wall, lower connecting terminal (23) extends to insulator (14) outward, the middle part of described insulator (14) is provided with mounting bracket (10), its uncovered lower end is sealedly connected with bonnet (30), described arc-extinguishing tube (12) is coaxially arranged at barrel type insulation (14) inner chamber, its upper end is connected with top connection (9), described top connection (9) top is connected with moving contact (7), described arc-extinguishing tube (12) lower end is also connected with lower contact (28), described top connection (9) is respectively equipped with in lower contact (28) through hole being communicated with arc-extinguishing tube (12), described arc-extinguishing tube (12) outer wall cover has arc extinguishing spring (27) and lower moving contact (15), described fuse (8) upper end is clamped and fastened between moving contact (7) and top connection (9), its lower end is downwards successively through top connection (9), arc-extinguishing tube (12) and lower contact (28), to turn back again the screw rod (25) being connected to and being arranged on lower moving contact (15), and gripped by nut (26), the length of described fuse (8) makes the arc extinguishing spring (27) be positioned between lower moving contact (15) and lower contact (28) be in compressive state, described upper moving contact (7) and lower moving contact (15) are connected upper static contact (6) and lower fixed contact (16) respectively, it is characterized in that: described upper connecting terminal (1) and lower connecting terminal (23) are copper bar, described copper bar is positioned at insulator (14) part outward and is also provided with copper-aluminium joint connecting hole.
2. the single-column all insulation crane that a kind of fail safe as claimed in claim 1 is good, it is characterized in that: described barrel type insulation (14) inwall is also provided with anti-rotation catch (24), described anti-rotation catch (24) has towards the stopper of arc-extinguishing tube (12) projection, and described stopper is corresponding with the position of the screw rod (25) on lower moving contact (15).
3. the single-column all insulation crane that a kind of fail safe as claimed in claim 2 is good, it is characterized in that: described anti-rotation catch (24) is in hook-type, its straight-bar portion is fixedly connected on lower fixed contact (16), and hook portion is towards lower moving contact (15), and corresponding with the position of screw rod (25).
4. the single-column all insulation crane that a kind of fail safe as claimed in claim 1 is good, it is characterized in that: described insulator (14) inwall is also connected with epoxy sleeve (13), described arc-extinguishing tube (12) is coaxially arranged at epoxy sleeve (13) inner chamber, mounting bracket (10) is connected between insulator (14) inwall and epoxy sleeve (13) outer wall, is fixed by straight pin (11).
5. the single-column all insulation crane that a kind of fail safe as claimed in claim 1 is good, it is characterized in that: described insulator (14) top is also provided with the upper spring cover (5) of upper end open, lower end closed, and being connected to the top electrode (3) of upper spring cover (5) upper end, described top electrode (3) is connected with upper connecting terminal (1); Be provided with connecting rod and upper spring in described upper spring cover (5), described small end is connected with upper spring lower end, and described upper spring upper end is connected with top electrode (3), and described small end is also connected with top electrode (3) by the annealed copper wire (4) running through upper spring; Upper spring cover (5) lower surface is run through in described connecting rod lower end, and described upper static contact (6) upper end is fixedly connected on connecting rod, and lower end and upper moving contact (7) are fitted.
6. the single-column all insulation crane that a kind of fail safe as claimed in claim 1 is good, it is characterized in that: described insulator (14) bottom be radially provided with inner to close, the top stem casing (18) of outer end opening, and be connected to the bottom electrode (21) of top stem casing (18) openend, coaxial push rod (19) and push rod spring (20) is also provided with in described top stem casing (18), described push rod spring (20) two ends connect push rod (19) and bottom electrode (21) respectively, and described bottom electrode (21) connects lower connecting terminal (23); Described lower fixed contact (16) is in n shape, its inwall is connected with the identical spring leaf of shape with it (17), described lower fixed contact (16) side outer wall laminating lower moving contact (15) outer wall, described top stem casing (18) is inner to be extended to spring leaf (17) two side through lower fixed contact (16) and spring leaf (17) another sidewall, and described push rod (19) one end passes from top stem casing (18) the inner and fits in spring leaf (17) inwall.
7. the single-column all insulation crane that a kind of fail safe as claimed in claim 1 is good, is characterized in that: described insulator (14) lower end is also connected with coaxial insulation tube connector (29), and bonnet (30) connects the lower port of insulation tube connector (29).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420624608.7U CN204189756U (en) | 2014-10-27 | 2014-10-27 | The single-column all insulation crane that a kind of fail safe is good |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420624608.7U CN204189756U (en) | 2014-10-27 | 2014-10-27 | The single-column all insulation crane that a kind of fail safe is good |
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| Publication Number | Publication Date |
|---|---|
| CN204189756U true CN204189756U (en) | 2015-03-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420624608.7U Active CN204189756U (en) | 2014-10-27 | 2014-10-27 | The single-column all insulation crane that a kind of fail safe is good |
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| CN (1) | CN204189756U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104319209A (en) * | 2014-10-27 | 2015-01-28 | 江苏省电力公司洪泽县供电公司 | High-safety single column fully insulated line connector |
-
2014
- 2014-10-27 CN CN201420624608.7U patent/CN204189756U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104319209A (en) * | 2014-10-27 | 2015-01-28 | 江苏省电力公司洪泽县供电公司 | High-safety single column fully insulated line connector |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |