CN105513919A - Single-column all-insulation line connector easy to assemble and disassemble - Google Patents
Single-column all-insulation line connector easy to assemble and disassemble Download PDFInfo
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- CN105513919A CN105513919A CN201410487020.6A CN201410487020A CN105513919A CN 105513919 A CN105513919 A CN 105513919A CN 201410487020 A CN201410487020 A CN 201410487020A CN 105513919 A CN105513919 A CN 105513919A
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Abstract
The invention discloses a single-column all-insulation line connector easy to assemble and disassemble, comprising a fuse and an arc extinguishing tube. The single-column all-insulation line connector further comprises a cylindrical insulator, wherein an upper static contact and lower static contacts are arranged in the upper and lower parts of the inner cavity of the insulator respectively and penetrate through upper and lower wiring terminals on the wall of the insulator to extend outside the insulator, a mounting bracket is arranged in the middle of the insulator, and the lower end of the insulator is connected with a rear cover. The arc extinguishing tube is arranged in the inner cavity of the cylindrical insulator. The upper end of the arc extinguishing tube is connected with an upper connector, and an upper moving contact is connected above the upper connector. The lower end of the arc extinguishing tube is connected with a lower connector. The outer wall of the arc extinguishing tube is sleeved with an arc extinguishing spring and a lower moving contact. The upper end of the fuse is clamped and fixed between the upper moving contact and the upper connector, and the lower end of the fuse sequentially penetrates through the upper connector, the arc extinguishing tube and the lower connector downward, and then turns back to be connected with a screw on the lower moving contact. The upper moving contact is connected with the upper static contact, and the lower moving contact is connected with the lower static contacts. The inner wall of the cylindrical insulator is provided with an anti-rotating baffle plate for preventing the lower moving contact from rotating along with a line connector rod all the time. The single-column all-insulation line connector is easy to assemble and disassemble.
Description
Technical field
The present invention relates to circuit overload and short-circuit protection technical field, be specifically related to a kind of easy-to-mount single-column all insulation crane.
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, because the course of action of arc-extinguishing tube changes, special link rod is as shown in Figure 4 adopted to dismantle, the top of link rod is connected with crane head, described crane head top is provided with the step crane cover of depression, described crane cover inner chamber top is coaxially connected with insulating case, described insulating case inwall is provided with the arc-shaped limit block towards the center of circle, and the lower surface of described arc-shaped limit block is inclined-plane, be enclosed within lower moving contact by insulating case during dismounting arc-extinguishing tube, lower moving contact is provided with backstay, rotates link rod and makes arc-shaped limit block block backstay, is convenient to force and lower moving contact and arc-extinguishing tube is left behind, but in actual mechanical process, find that lower moving contact can rotate together along with link rod, operating personnel are when observing the backstay on arc-shaped limit block and lower moving contact, be difficult to make arc-shaped limit block just block backstay or just depart from backstay, the work of dismounting and installation arc-extinguishing tube is very inconvenient.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of easy-to-mount single-column all insulation crane, and the lower moving contact that can solve existing single-column all insulation crane can rotate together along with link rod, causes the problem that the work of dismounting and installation arc-extinguishing tube is very inconvenient.
The present invention is achieved through the following technical solutions:
A kind of easy-to-mount single-column all insulation crane, 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; 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, is connected with the polar cap that powers in the wiring hole of described 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, 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, 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 present invention's advantage is compared with prior art:
In barrel type insulation, the anti-rotation catch corresponding with the position of the screw rod on lower moving contact is set, lower moving contact is positioned, prevent lower moving contact always along with link rod rotates, greatly reduce the difficulty of dismounting and the work of installation arc-extinguishing tube, improve the operating efficiency of operating personnel, reduce labour intensity.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the part A enlarged drawing of Fig. 1.
Fig. 3 is existing single-column all insulation crane structural representation.
Fig. 4 is the special link rod structural representation of existing single-column all insulation crane.
Embodiment
The easy-to-mount single-column all insulation of one as depicted in figs. 1 and 2 crane, 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, the polar cap 2 that powers on is connected with in the wiring hole of described 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, bottom electrode lid 22 is connected with in the wiring hole of described 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, and described anti-rotation catch 24 is in hook-type, and 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.
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 (6)
1. an easy-to-mount single-column all insulation crane, 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 barrel type insulation (14) inwall is also provided with anti-rotation catch (24), and 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).
2. a kind of easy-to-mount single-column all insulation crane as claimed in claim 1, 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).
3. a kind of easy-to-mount 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, is fixed by straight pin (11).
4. a kind of easy-to-mount 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 be connected to the top electrode (3) of 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); 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.
5. a kind of easy-to-mount single-column all insulation crane as claimed in claim 1, it is characterized in that: described insulator (14) bottom is radially provided with inner closing, 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, described bottom electrode (21) connects lower connecting terminal (23), bottom electrode lid (22) is connected with in the wiring hole of described 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.
6. a kind of easy-to-mount 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 |
|---|---|---|---|
| CN201410487020.6A CN105513919B (en) | 2014-09-23 | 2014-09-23 | A kind of easy-to-mount single-column all insulation crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410487020.6A CN105513919B (en) | 2014-09-23 | 2014-09-23 | A kind of easy-to-mount single-column all insulation crane |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105513919A true CN105513919A (en) | 2016-04-20 |
| CN105513919B CN105513919B (en) | 2017-09-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410487020.6A Active CN105513919B (en) | 2014-09-23 | 2014-09-23 | A kind of easy-to-mount single-column all insulation crane |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022036881A1 (en) * | 2020-08-21 | 2022-02-24 | 广东电网有限责任公司清远供电局 | Distribution network line lightning arrester |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB375772A (en) * | 1929-12-26 | 1932-06-30 | Alberto Saporta | Improvements in or relating to fuse apparatus for the protection of electrical circuits |
| GB601717A (en) * | 1946-05-27 | 1948-05-11 | Line Equipment Ltd | Improvements in or relating to fusible electric cut-outs |
| CN101635233A (en) * | 2008-07-24 | 2010-01-27 | 上海市电力公司 | Insulating enclosed type pagoda-shaped fuse |
| CN102054638A (en) * | 2010-12-30 | 2011-05-11 | 蔡彭博 | Transparent drop-out fuse |
| CN204189754U (en) * | 2014-09-23 | 2015-03-04 | 江苏省电力公司洪泽县供电公司 | A kind of easy-to-mount single-column all insulation crane |
-
2014
- 2014-09-23 CN CN201410487020.6A patent/CN105513919B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB375772A (en) * | 1929-12-26 | 1932-06-30 | Alberto Saporta | Improvements in or relating to fuse apparatus for the protection of electrical circuits |
| GB601717A (en) * | 1946-05-27 | 1948-05-11 | Line Equipment Ltd | Improvements in or relating to fusible electric cut-outs |
| CN101635233A (en) * | 2008-07-24 | 2010-01-27 | 上海市电力公司 | Insulating enclosed type pagoda-shaped fuse |
| CN102054638A (en) * | 2010-12-30 | 2011-05-11 | 蔡彭博 | Transparent drop-out fuse |
| CN204189754U (en) * | 2014-09-23 | 2015-03-04 | 江苏省电力公司洪泽县供电公司 | A kind of easy-to-mount single-column all insulation crane |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022036881A1 (en) * | 2020-08-21 | 2022-02-24 | 广东电网有限责任公司清远供电局 | Distribution network line lightning arrester |
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| Publication number | Publication date |
|---|---|
| CN105513919B (en) | 2017-09-19 |
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