CN105355486B - Mume flower contact spring fitting device - Google Patents
Mume flower contact spring fitting device Download PDFInfo
- Publication number
- CN105355486B CN105355486B CN201510898091.XA CN201510898091A CN105355486B CN 105355486 B CN105355486 B CN 105355486B CN 201510898091 A CN201510898091 A CN 201510898091A CN 105355486 B CN105355486 B CN 105355486B
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- Prior art keywords
- cylinder
- deformation
- drive link
- spring
- mume flower
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
- H01H11/04—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Springs (AREA)
Abstract
The invention discloses a kind of Mume flower contact spring fitting device, including power set, at least one retainer plate and at least two bar shaped fins, the bar shaped fin sets and cooperatively formed the deformation cylinder being sheathed in spring around the periphery of the retainer plate, and the power set drive each bar shaped fin closer or far from the axis of the deformation cylinder simultaneously.The present invention only needs the people just spring can be installed on Mume flower contact, it is to avoid spring, which needs to coordinate by two people or many people when mounted, in conventional art could dock the complicated procedures of forming of completion, so as to improve the efficiency of assembling of spring on Mume flower contact.Avoid and changed using screwdriver or hand etc. simultaneously, be easily caused the deformation of plum blossom fingertip or scrape the phenomenons such as heating, it is ensured that circuit arrangement uses safety.
Description
Technical field
The present invention relates to the assembly tool technical field of power equipment, install and fill more particularly, to a kind of Mume flower contact spring
Put.
Background technology
Mume flower contact is that a kind of conventional conduction is slidably connected part, its be installed on switching on/off handcart, fuse handcart and
Isolate on other handcarts such as handcart.Accompanying drawing 1 show the three dimensional structure diagram of Mume flower contact 100, and it includes plum blossom fingertip 110
And some springs 120 on plum blossom fingertip 110.Wherein, whether the pressure of spring 120 when in use is normal directly closes
It is tied to the safe operation of power equipment.Under long-term use, spring easily occurs fatigue and loosens phenomenon, and the safety of influence equipment is steady
Fixed operation.Therefore, periodically spring must be changed.The substitute mode of current spring passes through screwdriver or hand etc. for staff
Change, plum blossom fingertip 110 is deformed or scrape heating；And exert oneself uneven when spring is installed or firmly excessive easily make
Spring has scar or fracture；Loosely spring is such as grabbed during installation easily makes spring spring bullet wound and staff, and install it is bad or
It is not in place easily to cause contact and switch contact bad；This mounting means duration, installation effectiveness is not high.
The content of the invention
Based on this, the invention reside in overcoming the defect of prior art there is provided a kind of Mume flower contact spring fitting device, it is only
Needing a people can just be installed to spring on Mume flower contact, improve the efficiency of assembling of spring on Mume flower contact.
Its technical scheme is as follows：
A kind of Mume flower contact spring fitting device, including power set, at least one retainer plate and at least two bar shaped wings
Piece, the bar shaped fin sets and cooperatively formed the deformation cylinder being sheathed in spring around the periphery of the retainer plate, described dynamic
Power apparatus drives each bar shaped fin closer or far from the axis of the deformation cylinder simultaneously.
In wherein one embodiment, the power set are located in the deformation cylinder including one end and can be along the deformations
The drive link of cylinder axial movement, the adapter sleeve that is sheathed on the drive link and movable correspondingly with the bar shaped fin
Part, described movable part one end is hinged with the adapter sleeve, and the other end is hinged with the corresponding bar shaped fin.
In wherein one embodiment, the drive link is provided with the catch positioned at the adapter sleeve both sides, the fixation
Circle is provided with screwed hole, and the drive link is provided with the external screw thread coordinated with the screwed hole, and the drive link passes through the screwed hole.
In wherein one embodiment, the also rocking handle including being connected with the drive link.
In wherein one embodiment, described drive link one end passes through the adapter sleeve, and the other end passes through the screwed hole
And the deformation cylinder is stretched out, one end that the drive link stretches out the deformation cylinder is connected with the rocking handle.
In wherein one embodiment, the retainer plate is two, axial direction of two retainer plates along the deformation cylinder
It is arranged side by side.
In wherein one embodiment, also including fastener, the deformation cylinder, which is provided with, be used for solid with the appended claims
Determine the fixing hole of spring.
In wherein one embodiment, the described one end of deformation cylinder away from the rocking handle is tapered.
In wherein one embodiment, the first side block portion being oppositely arranged also including supporting table and in the supporting table
With the second side block portion, the first side block portion and the second side block portion cooperatively form what is coordinated with the deformation cylinder peripheral shape
Holding tank, the width of the holding tank gradually increases towards the direction away from the supporting table.
In wherein one embodiment, the periphery of the deformation cylinder is additionally provided with the engaging lug being oppositely arranged, one of institute
State engaging lug to be connected with the first side block portion, another described engaging lug is connected with the second side block portion.
The advantage or principle to preceding solution are illustrated below：
The invention provides a kind of Mume flower contact spring fitting device, including power set, at least one retainer plate and extremely
Few two bar shaped fins.The bar shaped fin sets and cooperatively formed the change being sheathed in spring around the periphery of the retainer plate
Shape cylinder.The power set drive each bar shaped fin closer or far from the axis of the deformation cylinder simultaneously so that bar
Shape fin cooperatively forms the deformation cylinder of expansible contraction.In an initial condition, deformation cylinder shrinks device of the present invention, will wait to pacify
The spring housing of dress is on deformation cylinder, and the deformation cylinder of power set driving afterwards opens, and makes the bore slightly larger than plum blossom of deformation cylinder
The external diameter of fingertip, the port for deforming cylinder is socketed in the port of plum blossom fingertip, manual push the spring to plum blossom fingertip, completes bullet
The replacing of spring.The present invention only needs the people just spring can be installed on Mume flower contact, it is to avoid spring is being installed in conventional art
When need to coordinate by two people or many people and could dock the complicated procedures of forming of completion, so as to improve the dress of spring on Mume flower contact
With efficiency.Avoid and changed using screwdriver or hand etc. simultaneously, be easily caused the deformation of plum blossom fingertip or scrape the phenomenons such as heating, protect
Demonstrate,prove circuit arrangement and use safety.
Power set include drive link, the adapter sleeve being sheathed on the drive link and corresponded with the bar shaped fin
Movable part.Movable part one end is hinged with adapter sleeve, and the other end is hinged with corresponding bar shaped fin.Adapter sleeve and movable part coordinate
Umbrella frame shape is formed, is easy to expansion and contraction.Adapter sleeve is sheathed on drive link, is moved together with drive link.When drive link band
During dynamic adapter sleeve movement, movable part driving deformation cylinder opens or shunk.
The drive link is provided with the catch positioned at the adapter sleeve both sides, spacing for being carried out to adapter sleeve.It is described solid
Fixed circle is provided with screwed hole, and drive link is provided with the external screw thread coordinated with screwed hole, and drive link passes through the screwed hole.It is driven when driving
When bar is rotated, drive link coordinates during rotation simultaneously along deformation cylinder axial movement with screwed hole, drives adapter sleeve movement,
And then drive deformation cylinder hypertonic.Powerplant configuration of the present invention is simple, it is easy to make, while passing through external screw thread on drive link
Coordinate with retainer plate upper screwed hole, be easy to adjust the bore of deformation cylinder by easy stages, it is ensured that deformation cylinder hypertonic amplitude is adjustable, keeps away
Deformation cylinder hypertonic amplitude is excessive when exempting from directly to drive the drive link be axially moveable, and is difficult regulation.
Present invention additionally comprises the rocking handle being connected with the drive link, be conducive to shaking rocking handle and then drive drive rod rotation,
Time saving and energy saving effect is reached.
Drive link one end passes through adapter sleeve, and the other end is through screwed hole and stretches out deformation cylinder, and the drive link stretches out deformation
One end of cylinder is connected with the rocking handle so that rocking handle is located at the outside of deformation cylinder, is easy to manually operated.
The retainer plate is two, and two retainer plates are arranged side by side, for further fixed bar shaped fin, it is ensured that become
Shape cylinder connection is firm, is difficult to loosen, increases the service life.
Present invention additionally comprises fastener, deformation cylinder is provided with the fixing hole with the appended claims, for being arranged in spring
Spring is fixed when deforming on cylinder, spring landing when deformation after unloading cylinder opens is prevented.
The described one end of deformation cylinder away from the rocking handle is tapered, is easy to spring to enter or release deformation cylinder.
The the first side block portion and the second side block portion being oppositely arranged present invention additionally comprises supporting table and in supporting table, first
Side block portion and the second side block portion cooperatively form the holding tank coordinated with deformation cylinder peripheral shape.The width of the holding tank by
Under up gradually increase, be easy to deformation cylinder be put into, meanwhile, for deformation cylinder it is spacing while also for deformation cylinder provides deformation sky
Between.
The periphery of the deformation cylinder is additionally provided with the engaging lug being oppositely arranged, one of them described engaging lug and first side
Stopper is connected, and another described engaging lug is connected with the second side block portion, for the fixed deformation cylinder in supporting table.
Brief description of the drawings
Fig. 1 is the three dimensional structure diagram of Mume flower contact；
Fig. 2 is the partial cutaway view for deforming cylinder and power set described in the embodiment of the present invention；
Fig. 3 is Fig. 2 A direction views；
Fig. 4 is the drive link and the assembling schematic diagram of adapter sleeve described in the embodiment of the present invention；
Fig. 5 is Fig. 2 B direction views；
Fig. 6 is the structural representation of the retainer plate described in the embodiment of the present invention；
Fig. 7 is the side view of the Mume flower contact spring fitting device described in the embodiment of the present invention.
Description of reference numerals：
100th, Mume flower contact, 110, plum blossom fingertip, 120, spring, 200, deformation cylinder, 210, retainer plate, 211, screwed hole,
220th, bar shaped fin, 221, fixing hole, 230, engaging lug, 300, power set, 310, drive link, 311, catch, 312, thrust
Ball bearing, 320, adapter sleeve, 330, movable part, 340, rocking handle, 400, supporting table, the 410, first side block portion, the 420, second side block
Portion.
Embodiment
Embodiments of the invention are described in detail below：
As shown in Fig. 2 a kind of Mume flower contact spring fitting device, including power set 300, at least one retainer plate 210
With at least two bar shaped fins 220.Bar shaped fin 220 is set around the periphery of retainer plate 210, is cooperatively formed and is sheathed on spring
Deformation cylinder 200 in 120.Power set 300 drive each bar shaped fin 220 closer or far from the axis of deformation cylinder 200 simultaneously
Line so that bar shaped fin 220 cooperatively forms the deformation cylinder 200 of expansible contraction.Apparatus of the present invention in an initial condition, deform cylinder
200 are shunk, and spring 120 to be installed is sheathed on deformation cylinder 200, and the deformation cylinder 200 of the driving of power set 300 afterwards opens,
The bore of deformation cylinder 200 is slightly larger than the external diameter of plum blossom fingertip 110, the port for deforming cylinder 200 is socketed on plum blossom fingertip 110
Interface, in manual push the spring 120 to plum blossom fingertip 110, complete the replacing of spring 120.The present invention only needs the people just can be by
Spring 120 is installed on Mume flower contact 100, it is to avoid spring 120 needs to match somebody with somebody by two people or many people when mounted in conventional art
The complicated procedures of forming completed could be docked by closing, so as to improve the efficiency of assembling of spring 120 on Mume flower contact 100.Keep away simultaneously
Exempt to change using screwdriver or hand etc., be easily caused plum blossom fingertip 110 and deform or scrape the phenomenons such as heating, it is ensured that circuit arrangement
Use safety.
In the present embodiment, bar shaped fin 220 is multiple, and multiple bar shaped fins 220 surround the outer weekly interval of retainer plate 210
Set, cooperatively form deformation cylinder 200, be conducive to deforming the hypertonic of cylinder 200.
As shown in figure 3, present invention additionally comprises fastener (accompanying drawing is not identified), deformation cylinder 200 is provided with and appended claims
Fixing hole 221, for fixing spring 120 when spring 120 is sheathed on deformation cylinder 200, prevents that deformation after unloading cylinder 200 from opening
When spring 120 slide.After cylinder 200 is deformed and Mume flower contact 100 is in place, spring 120 will can be pushed away after disassembly of fastener
Enter Mume flower contact 100.Specifically, fastener can select pin, screw etc..The present invention also can be according to actual needs in each bar shaped
Locating slot with the form fit of spring 120 is set on fin 220, for spring 120 to be fixed.
As shown in Fig. 2 power set 300 include what one end was located in deformation cylinder 200 and can moved axially along deformation cylinder 200
Drive link 310, the adapter sleeve 320 being sheathed on drive link 310 and with the one-to-one movable part of bar shaped fin 220 330.Activity
The one end of part 330 is hinged with adapter sleeve 320, and the other end is hinged with corresponding bar shaped fin 220.Adapter sleeve 320 is sheathed on drive link
On 310, moved together with drive link 310.When drive link 310 drives adapter sleeve 320 to move, movable part driving deformation cylinder 200
Open or shrink.
As shown in figure 4, in the present embodiment, drive link 310 is provided with the catch 311 positioned at the both sides of adapter sleeve 320, is used for
Adapter sleeve 320 is carried out spacing.Thrust ball bearing 312 is provided between catch 311 and adapter sleeve 320, thrust ball bearing 312 can be held
By axial load.As shown in Figure 2 and Figure 6, retainer plate 210 is two, and axial direction of two retainer plates 210 along deformation cylinder 200 is side by side
Set, for further fixed bar shaped fin 220, it is ensured that deformation cylinder 200 connects firm, is difficult to loosen, increases the service life.Two
Individual retainer plate 210 is equipped with screwed hole 211, and drive link 310 is provided with the external screw thread coordinated with screwed hole 210, the one end of drive link 310
Through adapter sleeve 320, the other end passes through the screwed hole 211 on two retainer plates 210.When driving drive link 310 to rotate, transmission
Bar 310 coordinates with screwed hole 211 to be moved axially along deformation cylinder 200 simultaneously during rotation, drives adapter sleeve 320 to move,
And then drive the deformation hypertonic of cylinder 200.Power set 300 of the present invention are simple in construction, it is easy to make.Simultaneously by drive link 310
External screw thread coordinates with the upper screwed hole 211 of retainer plate 210, is easy to adjust the bore of deformation cylinder 200 by easy stages, it is ensured that deformation cylinder
200 hypertonic amplitudes are adjustable, it is to avoid the deformation hypertonic amplitude of cylinder 200 is excessive when directly drive drive link 310 is axially moveable, and are difficult to adjust
Section.Power set 300 also can be designed as following structure by the present invention according to actual needs：Power set 300 include being located at deformation
Drive link 320 in cylinder 200 and with the one-to-one movable part of bar shaped fin 220 330, one end of movable part 330 directly with biography
Lever is connected, and the other end is connected with corresponding bar shaped fin 220, and deformation cylinder 200 can be achieved by direct push-and-pull drive link 320
Hypertonic.
Present invention additionally comprises the rocking handle 340 being connected with drive link 310, be conducive to shaking rocking handle 340 and then drive drive link
310 rotate, and have reached time saving and energy saving effect.Drive link 320 through screwed hole 211 one end stretch out deformation cylinder 200, and with institute
State rocking handle 340 to connect so that rocking handle 340 is located at the outside of deformation cylinder 200, is easy to manually operated.
As shown in figure 3, the one end of deformation cylinder 200 away from rocking handle 340 is tapered, it is easy to spring 120 to enter or release deformation
Cylinder 200.Spring 120 can be directly fixed on to the conical section of deformation cylinder 200, when that spring 120 must be pushed into Mume flower contact 100,
The fastener of fixed spring 120 is removed, while dilatating and deformable cylinder 200 so that spring 120 slides to Mume flower contact 100 from conical section
On, reach the effect of automatic installation spring 120.
As shown in fig. 7, the first side block portion being oppositely arranged present invention additionally comprises supporting table 410 and in supporting table 410
410 and the second side block portion 420.First side block portion 410 and the second side block portion 420 are cooperatively formed matches somebody with somebody with the deformation peripheral shape of cylinder 200
The holding tank of conjunction.The width of holding tank gradually increases towards the direction away from supporting table 410, is easy to deformation cylinder 200 to be put into, meanwhile,
Also it is that deformation cylinder 200 provides deformation space spacing for deformation cylinder 200 while.
The periphery of deformation cylinder 200 is additionally provided with the engaging lug 230 being oppositely arranged, one of side block of engaging lug 230 and first
Portion 410 is bolted, and another engaging lug 230 is bolted with the second side block portion 420, in supporting table
Fixed deformation cylinder 200 on 410.
In summary, the advantage of the invention is that：By the way that spring 120 is sheathed on deformation cylinder 200, power set 300
Driving deformation cylinder 200 is expanded so that spring 120, which is expanded, smoothly enters Mume flower contact 100, improves bullet on Mume flower contact 100
The installation effectiveness of spring 120, and the problems such as being generated heat caused by plum blossom fingertip 110 is deformed and scraped can be prevented effectively from.The present invention can root
Sizes are designed to according to being actually needed, so as to the switch suitable for different model.And deformation cylinder 200 of the present invention can
Deform within the specific limits, it is adaptable to which the spring 120 of same type difference voltage class Mume flower contact 100 more changes jobs, versatility
Preferably.Work is changed present invention is particularly suitable for the spring 120 of existing 10kV vacuum switch trolleys Mume flower contact 100 in transformer station
Make.In addition, being detachably connected between the upside stopper of supporting table 410 and deformation cylinder 200, it is easy to carry after erecting device is dismantled,
Different operating place can be flexibly applied to.It is also possible to apply the invention to the mounting robot of power equipment producer, pass through robot
Drive drive link 310 to move, realize the deformation hypertonic of cylinder 200, improve installation effectiveness.
Each technical characteristic of above example can be combined arbitrarily, to make description succinct, not to above-described embodiment
In each technical characteristic it is all possible combination be all described, as long as however, the combination of these technical characteristics be not present lance
Shield, is all considered to be the scope of this specification record.
Above example only expresses the several embodiments of the present invention, and it describes more specific and detailed, but can not
Therefore it is construed as limiting the scope of the patent.It should be pointed out that for the person of ordinary skill of the art,
On the premise of not departing from present inventive concept, various modifications and improvements can be made, these belong to protection scope of the present invention.
Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (6)
1. a kind of Mume flower contact spring fitting device, it is characterised in that including power set, at least one retainer plate and at least two
Individual bar shaped fin, the bar shaped fin sets and cooperatively formed the deformation being sheathed in spring around the periphery of the retainer plate
Cylinder, the power set drive each bar shaped fin closer or far from the axis of the deformation cylinder simultaneously；The power
Device is located at the drive link that can be moved axially in the deformation cylinder and along the deformation cylinder including one end, is sheathed on the drive link
On adapter sleeve and with the one-to-one movable part of bar shaped fin, described movable part one end is hinged with the adapter sleeve, separately
One end is hinged with the corresponding bar shaped fin；The drive link is provided with the catch positioned at the adapter sleeve both sides, the gear
Thrust ball bearing is provided between piece and the adapter sleeve, the retainer plate is provided with screwed hole, and the drive link is provided with and the spiral shell
The external screw thread that pit coordinates, the drive link passes through the screwed hole；Also include the rocking handle being connected with the drive link；It is described to become
The one end of shape cylinder away from the rocking handle is tapered.
2. Mume flower contact spring fitting device according to claim 1, it is characterised in that described drive link one end passes through institute
Adapter sleeve is stated, the other end is through the screwed hole and stretches out the deformation cylinder, the drive link stretches out one end of the deformation cylinder
It is connected with the rocking handle.
3. Mume flower contact spring fitting device according to claim 1, it is characterised in that the retainer plate is two, two
Axial direction of the individual retainer plate along the deformation cylinder is arranged side by side.
4. Mume flower contact spring fitting device according to claim 1, it is characterised in that also including fastener, the change
Shape cylinder is provided with the fixing hole for fixing spring with the appended claims.
5. the Mume flower contact spring fitting device according to any one of Claims 1-4, it is characterised in that also including support
Platform and the first side block portion and the second side block portion being oppositely arranged in the supporting table, the first side block portion and described second
Side block portion cooperatively forms the holding tank coordinated with the deformation cylinder peripheral shape, and the width of the holding tank is towards away from the support
The direction of platform gradually increases.
6. Mume flower contact spring fitting device according to claim 5, it is characterised in that the periphery of the deformation cylinder is also set
There is the engaging lug being oppositely arranged, one of them described engaging lug is connected with the first side block portion, another described engaging lug
It is connected with the second side block portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510898091.XA CN105355486B (en) | 2015-12-07 | 2015-12-07 | Mume flower contact spring fitting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510898091.XA CN105355486B (en) | 2015-12-07 | 2015-12-07 | Mume flower contact spring fitting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105355486A CN105355486A (en) | 2016-02-24 |
| CN105355486B true CN105355486B (en) | 2017-07-11 |
Family
ID=55331432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510898091.XA Active CN105355486B (en) | 2015-12-07 | 2015-12-07 | Mume flower contact spring fitting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105355486B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107316767B (en) * | 2017-05-03 | 2020-05-12 | 正泰电气股份有限公司 | Contact finger assembling tool |
| CN108847366B (en) * | 2018-07-17 | 2024-02-23 | 国网山东省电力公司招远市供电公司 | Mounting tool for moving contact of circuit breaker |
| CN113223882B (en) * | 2021-05-18 | 2022-07-19 | 佛山市银悍电器有限公司 | Manufacturing and processing machine and processing method for plum blossom contact of vacuum circuit breaker |
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| CN201483440U (en) * | 2009-08-25 | 2010-05-26 | 广州东芝白云电器设备有限公司 | Tulip contact assembling and disassembling tool |
| CN203390880U (en) * | 2013-06-29 | 2014-01-15 | 国家电网公司 | Special tool for changing retainer spring of quincuncial contact |
| CN104409998A (en) * | 2014-12-02 | 2015-03-11 | 深圳供电局有限公司 | Tool for replacing tulip contact of breaker |
| CN204424122U (en) * | 2015-03-24 | 2015-06-24 | 厦门市湖里星光金属制品工业有限公司 | A kind of Mume flower contact spring automatic installation apparatus |
| CN204424124U (en) * | 2015-03-26 | 2015-06-24 | 国网河南省电力公司商丘供电公司 | Plum blossom contact for switching fastening spring rapid installation device |
| CN105006393A (en) * | 2015-07-24 | 2015-10-28 | 宁波耀华电气科技有限责任公司 | Device for assembling plum-blossom-shaped contact |
| CN205303247U (en) * | 2015-12-07 | 2016-06-08 | 广东电网有限责任公司中山供电局 | Plum blossom contact spring installation device |
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201483440U (en) * | 2009-08-25 | 2010-05-26 | 广州东芝白云电器设备有限公司 | Tulip contact assembling and disassembling tool |
| CN203390880U (en) * | 2013-06-29 | 2014-01-15 | 国家电网公司 | Special tool for changing retainer spring of quincuncial contact |
| CN104409998A (en) * | 2014-12-02 | 2015-03-11 | 深圳供电局有限公司 | Tool for replacing tulip contact of breaker |
| CN204424122U (en) * | 2015-03-24 | 2015-06-24 | 厦门市湖里星光金属制品工业有限公司 | A kind of Mume flower contact spring automatic installation apparatus |
| CN204424124U (en) * | 2015-03-26 | 2015-06-24 | 国网河南省电力公司商丘供电公司 | Plum blossom contact for switching fastening spring rapid installation device |
| CN105006393A (en) * | 2015-07-24 | 2015-10-28 | 宁波耀华电气科技有限责任公司 | Device for assembling plum-blossom-shaped contact |
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| Publication number | Publication date |
|---|---|
| CN105355486A (en) | 2016-02-24 |
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