CN203931995U - A kind of single-column all insulation crane - Google Patents
A kind of single-column all insulation crane Download PDFInfo
- Publication number
- CN203931995U CN203931995U CN201420364800.7U CN201420364800U CN203931995U CN 203931995 U CN203931995 U CN 203931995U CN 201420364800 U CN201420364800 U CN 201420364800U CN 203931995 U CN203931995 U CN 203931995U
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- CN
- China
- Prior art keywords
- arc
- contact
- insulator
- spring
- moving contact
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000009413 insulation Methods 0.000 title claims abstract description 23
- 239000012212 insulator Substances 0.000 claims abstract description 39
- 230000003068 static effect Effects 0.000 claims description 13
- 239000004593 Epoxy Substances 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 238000010030 laminating Methods 0.000 claims description 5
- 238000010891 electric arc Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000008033 biological extinction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007789 gas Substances 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 a kind of single-column all insulation crane, comprise fuse and arc-extinguishing tube, also comprise tubular insulator, insulator inner chamber upper and lower is respectively equipped with upper and lower fixed contact, upper and lower fixed contact extends to outside insulator by running through the upper and lower binding post of insulator wall respectively, the middle part of insulator is provided with mounting bracket, and its lower end is connected with bonnet; Arc-extinguishing tube is arranged at tubular insulator inner chamber, its upper end is connected with top connection, top connection top is connected with moving contact, 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, and 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, turn back and be connected in lower moving contact, the length of described fuse makes arc extinguishing spring in compressive state; Described upper and lower moving contact connects respectively upper and lower fixed contact.The utility model meets the requirement of all insulation, and coefficient of safety is high.
Description
Technical field
The utility model relates to circuit overload and short-circuit protection technical field, is specifically related to a kind of single-column all insulation crane.
Background technology
Drop type crane is a kind of rated voltage 10kV, rated current 200A and following, the distribution line of frequency 50HZ and the overload of distribution transformer and short-circuit protection of being applicable to, mainly comprise insulated leg, moving contact, fixed contact, arc-extinguishing tube and fuse, when crane is during in closing position, dynamic and static contact is compressed by Compress Spring, to guarantee there is enough pressure between contact, rotating torque spring is equipped with in arc-extinguishing tube lower end; After fuse packs into, torque spring is tightened, and makes fuse in tension, with guarantee arc-extinguishing tube when the closing position from contracting; When circuit overload or short circuit fuse failure, effect by means of torque spring, electric arc between the fuse breaking in two is elongated rapidly, in arc-extinguishing tube, produce a large amount of arc extinguishing gases, electric arc is extinguished rapidly, to reduce the loss of arcing time and arc extinguishing material, after arc extinction, arc-extinguishing tube automatically falls under the effect of deadweight and bridge-shaped contact Compress Spring, forms obvious visible fracture.
The upper and lower contact of this drop type crane, respectively in naked state, cannot meet the requirement of all insulation, has certain potential safety hazard.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of single-column all insulation crane, can solve existing drop type and separately can meet the requirement of all insulation, causes existing the problem of potential safety hazard.
The utility model is achieved through the following technical solutions:
A kind of single-column all insulation crane, comprise fuse and arc-extinguishing tube, also comprise upper end sealing, the uncovered tubular insulator in lower end, 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 extend to outside insulator by running through upper connecting terminal, the lower connecting terminal of insulator wall respectively, 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 tubular insulator inner chamber, its upper end is connected with top connection, described top connection top is connected with moving contact, described arc-extinguishing tube lower end is also connected with lower contact, in described top connection and lower contact, be respectively equipped with the through hole that is communicated with arc-extinguishing tube, 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, turn back again and be connected in lower moving contact, the length of described fuse makes arc extinguishing spring between lower moving contact and lower contact in compressive state, described upper moving contact is connected respectively upper static contact and lower fixed contact with lower moving contact.
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, by straight pin, fixes.
Described insulator top is also provided with the upper spring cover of upper end open, lower end closed, and the top electrode that is connected in upper spring set upper side, and described top electrode is connected with upper connecting terminal, in the wiring hole of described upper connecting terminal, is connected with the polar cap that powers on; In described upper spring cover, be provided with connecting rod and upper spring, 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 running through the annealed copper wire of 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, lower end and the laminating of upper moving contact.
Described insulator bottom is radially provided with the top stem casing of inner sealing, outer end opening along it, and the bottom electrode that is connected in top stem casing openend, in described top stem casing, be also provided with coaxial push rod and push rod spring, described push rod spring two ends connect respectively push rod and bottom electrode, described bottom electrode connects lower connecting terminal, is connected with bottom electrode lid in the wiring hole of described lower connecting terminal; Described lower fixed contact is n shape, its inwall is connected with the identical spring leaf of shape with it, the first side outer wall laminating of described lower stationary contact lower moving contact outer wall, described top stem casing is inner to be passed lower fixed contact and another sidewall of spring leaf and extends between spring leaf two side, and described push rod one end passes and fit in spring leaf inwall from top stem casing the inner.
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 being a little compared with prior art:
One, lower moving contact is slidably connected at arc-extinguishing tube outer wall, during fuse failure, by arc extinguishing spring, realize arc extinguishing, arc-extinguishing tube and upper and lower moving contact are arranged in tubular insulator, be connected with the upper and lower fixed contact extending to outside insulator by upper and lower binding post respectively, meet the requirement of all insulation, coefficient of safety is high;
Two, there will not be Slow-disconnecting and slow-connecting or do not reach position phenomenon, reliability is high;
Three, simple in structure, easy to maintenance, low cost, practical.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the A part enlarged drawing of Fig. 1.
Wherein 1 is upper connecting terminal, the 2nd, polar cap powers on, the 3rd, top electrode, the 4th, annealed copper wire, the 5th, upper spring cover, the 6th, upper static contact, the 7th, upper moving contact, the 8th, fuse, the 9th, top connection, the 10th, mounting bracket, the 11st, straight pin, the 12nd, arc-extinguishing tube, the 13rd, epoxy sleeve, the 14th, tubular insulator, the 15th, lower moving contact, the 16th, lower fixed contact, the 17th, spring leaf, the 18th, top stem casing, the 19th, push rod, the 20th, push rod spring, the 21st, bottom electrode, the 22nd, bottom electrode lid, the 23rd, lower connecting terminal, the 25th, screw rod, the 26th, hexagon nut with flange, the 27th, arc extinguishing spring, the 28th, lower contact, the 29th, insulation tube connector, the 30th, bonnet.
Embodiment
A kind of single-column all insulation crane as depicted in figs. 1 and 2, comprises fuse 8 and arc-extinguishing tube 12, also comprises upper end sealing, the uncovered tubular insulator 14 in lower end, and described insulator 14 inwalls are also connected with epoxy sleeve 13, described insulator 14 tops are 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 in the top electrode 3 that upper spring overlaps 5 upper ends, described upper connecting terminal 1 runs through insulator 14 tops, described top electrode 3 is connected with upper connecting terminal 1, in the wiring hole of described upper connecting terminal 1, be connected with the polar cap 2 that powers on, in described upper spring cover 5, be provided with connecting rod and upper spring, 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 running through the annealed copper wire 4 of upper spring, described connecting rod lower end is run through upper spring and is overlapped 5 lower surfaces, described upper static contact 6 upper ends are fixedly connected on connecting rod, described insulator 14 bottoms are radially provided with lower fixed contact 16 along it, lower connecting terminal 23, the top stem casing 18 of inner sealing outer end opening, and the bottom electrode 21 that is connected in top stem casing 18 openends, described lower connecting terminal 23 runs through the wall of insulator 14, in described top stem casing 18, be also provided with coaxial push rod 19 and push rod spring 20, described push rod spring 20 two ends connect respectively push rod 19 and bottom electrode 21, described bottom electrode 21 connects lower connecting terminal 23, in the wiring hole of described lower connecting terminal 23, be connected with bottom electrode lid 22, described lower fixed contact 16 is n shape, its inwall is connected with the spring leaf 17 that shape is identical with it, described top stem casing 18 is inner to be passed lower fixed contact 16 and spring leaf 17 another sidewalls and extends between spring leaf 17 two sides, described push rod 19 one end pass and fit in spring leaf 17 inwalls from top stem casing 18 the inners, 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 chambers, its upper end is connected with top connection 9, described top connection 9 tops are connected with moving contact 7, described arc-extinguishing tube 12 lower ends are also connected with lower contact 28, in described top connection 9 and lower contact 28, be respectively equipped with the through hole that is communicated with arc-extinguishing tube 12, described arc-extinguishing tube 12 outer wall covers have arc extinguishing spring 27 and lower moving contact 15, described fuse 8 upper ends are 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 in lower moving contact 15, the length of described fuse 8 makes arc extinguishing spring 27 between lower moving contact 15 and lower contact 28 in compressive state, described upper moving contact 7 is connected respectively laminating upper static contact 6 and lower fixed contact 16 with lower moving contact 15.
The middle part of described insulator 14 is provided with by the fixing mounting bracket 10 of straight pin 11 between wall and epoxy sleeve 13 outer walls within it, 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.
When fuse 8 is molten while breaking in two, arc extinguishing spring 27 makes to be connected to the electric arc producing between moving contact 7 and the two-section fuse of lower moving contact 15 and elongates rapidly, thereby realizes arc extinguishing; Because lower moving contact 15 is by lower fixed contact 16 clampings of both sides, arc-extinguishing tube 12 bonnet 30 directions to insulator 14 under the active force of arc extinguishing spring 27 eject.
Claims (5)
1. a single-column all insulation crane, comprise fuse (8) and arc-extinguishing tube (12), it is characterized in that: also comprise upper end sealing, the tubular insulator (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 running through the upper connecting terminal (1) of insulator (14) wall, lower connecting terminal (23) extends to outside insulator (14), 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 tubular insulator (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), in described top connection (9) and lower contact (28), be respectively equipped with the through hole that is 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 in lower moving contact (15), the length of described fuse (8) makes to be positioned at arc extinguishing spring (27) between lower moving contact (15) and lower contact (28) in compressive state, described upper moving contact (7) is connected respectively upper static contact (6) and lower fixed contact (16) with lower moving contact (15).
2. a kind of single-column all insulation crane as claimed in claim 1, 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, fixing by straight pin (11).
3. a kind of single-column all insulation crane as claimed in claim 1, 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 the top electrode (3) that is connected in upper spring cover (5) upper end, described top electrode (3) is connected with upper connecting terminal (1), is connected with the polar cap that powers on (2) in the wiring hole of described upper connecting terminal (1); In described upper spring cover (5), be provided with connecting rod and upper spring, 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 running through the annealed copper wire (4) of 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, lower end and upper moving contact (7) laminating.
4. a kind of single-column all insulation crane as claimed in claim 1, it is characterized in that: described insulator (14) bottom is radially provided with inner sealing along it, the top stem casing of outer end opening (18), and the bottom electrode (21) that is connected in top stem casing (18) openend, in described top stem casing (18), be also provided with coaxial push rod (19) and push rod spring (20), described push rod spring (20) two ends connect respectively push rod (19) and bottom electrode (21), described bottom electrode (21) connects lower connecting terminal (23), in the wiring hole of described lower connecting terminal (23), be connected with bottom electrode lid (22), described lower fixed contact (16) is n shape, its inwall is connected with the spring leaf (17) that shape is identical with it, described lower fixed contact (16) one side outer wall laminating lower moving contact (15) outer walls, described top stem casing (18) is inner to be passed lower fixed contact (16) and another sidewall of spring leaf (17) and extends between spring leaf (17) two side, and described push rod (19) one end passes and fit in spring leaf (17) inwall from top stem casing (18) the inner.
5. a kind of single-column all insulation crane as claimed in claim 1, 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 |
|---|---|---|---|
| CN201420364800.7U CN203931995U (en) | 2014-07-03 | 2014-07-03 | A kind of single-column all insulation crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420364800.7U CN203931995U (en) | 2014-07-03 | 2014-07-03 | A kind of single-column all insulation crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203931995U true CN203931995U (en) | 2014-11-05 |
Family
ID=51827766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420364800.7U Expired - Lifetime CN203931995U (en) | 2014-07-03 | 2014-07-03 | A kind of single-column all insulation crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203931995U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104103469A (en) * | 2014-07-03 | 2014-10-15 | 江苏省电力公司洪泽县供电公司 | Single-column all-insulation line connector |
-
2014
- 2014-07-03 CN CN201420364800.7U patent/CN203931995U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104103469A (en) * | 2014-07-03 | 2014-10-15 | 江苏省电力公司洪泽县供电公司 | Single-column all-insulation line connector |
| CN104103469B (en) * | 2014-07-03 | 2016-03-30 | 江苏省电力公司洪泽县供电公司 | A kind of single-column all insulation crane |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141105 Effective date of abandoning: 20160330 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |