CN109036936A - A kind of direct acting type earthing switch - Google Patents
A kind of direct acting type earthing switch Download PDFInfo
- Publication number
- CN109036936A CN109036936A CN201811119198.XA CN201811119198A CN109036936A CN 109036936 A CN109036936 A CN 109036936A CN 201811119198 A CN201811119198 A CN 201811119198A CN 109036936 A CN109036936 A CN 109036936A
- Authority
- CN
- China
- Prior art keywords
- moving contact
- contact
- earthing switch
- direct acting
- acting type
- 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.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/003—Earthing switches
Abstract
The invention discloses a kind of direct acting type earthing switch, including shell, the first static contact, the second static contact, moving contact and driving mechanism, the driving mechanism and the moving contact link；It is provided with limited block in the shell, in "on" position, the limited block is used to prevent the movement of the driving mechanism, and the movement, which bounces off first static contact by the moving contact, to be caused.In the present invention, since driving mechanism and moving contact link, if moving contact bounces off the first static contact under the action of big electric power, driving mechanism movement will lead to, and limited block is used to prevent the generation of the movement, then the movement that moving contact bounces off the first static contact also can not just occur.In other words, the direct acting type earthing switch in the present invention in "on" position there is self-locking function to avoid the generation of failure to improve the stability of "on" position.
Description
Technical field
The present invention relates to earthing switch technical fields, more specifically to a kind of direct acting type earthing switch.
Background technique
Direct acting type earthing switch includes shell, is set to the intracorporal moving contact of shell, static contact, the second static contact and driving
Mechanism.First static contact and the second static contact are distributed in the both ends of moving contact.Moving contact always with the second static contact.Moving contact exists
It is for linear motion under the driving of driving mechanism, to contact or separate with the first static contact.When moving contact is contacted with the first static contact
When, direct acting type earthing switch, which is realized, to close a floodgate；When moving contact is separated with the first static contact, direct acting type earthing switch realizes separating brake.
When direct acting type earthing switch is in "on" position, if the electric current for flowing through direct acting type earthing switch is larger,
Moving contact is likely to flick under the action of big electric power, then electric arc will be generated between moving contact and fixed contact,
The generation to cause the accident.
Therefore, how moving contact to be avoided to flick, improves the stability of direct acting type earthing switch "on" position, is this field skill
Art personnel critical problem urgently to be resolved.
Summary of the invention
The purpose of the present invention is avoiding moving contact from flicking, the stability of direct acting type earthing switch "on" position is improved.
A kind of direct acting type earthing switch, including shell, the first static contact, the second static contact, moving contact and driving mechanism,
The driving mechanism and the moving contact link；It is provided with limited block in the shell, in "on" position, the limited block is used
In the movement for preventing the driving mechanism, the movement, which bounces off first static contact by the moving contact, to be caused.
Preferably, the driving mechanism includes: drive shaft, connecting lever, linking arm, the first pin shaft and the second pin shaft；Institute
The one end for stating connecting lever is connect with the drive shaft, and the other end is pivotally connected by first pin shaft and the linking arm, the company
The one end of arm far from the connecting lever is connect to be pivotally connected by second pin shaft and the moving contact；
In "on" position, the connecting lever or the linking arm are resisted against on the limited block, and the limited block prevents institute
Connecting lever or linking arm rotation are stated, the rotation, which bounces off first static contact by the moving contact, to be caused.
Preferably, in "on" position, the angle of the connecting lever and the linking arm is obtuse angle, and the limited block setting exists
The side of the moving contact, and it is located at the outside of the connecting lever or the linking arm.
Preferably, the drive shaft and the limited block are located at the same side of the moving contact.
Preferably, the limited block and the shell are integral type, and the limited block is mounted on the shell by bolt
Inner wall on.
Preferably, the guide pad with the first static contact coaxial line, the guiding are provided in first static contact
The inner cavity clearance fit of block and the moving contact.
Preferably, the guide pad is made of isolation material.
Preferably, first static contact and second static contact include multiple fingertips, the multiple fingertip composition
With the cylindric fingertip group of moving contact cooperation, spring part, the spring part effect are provided on the outside of the fingertip group
In the fingertip group, make the fingertip group that there is elastic enclasping force.
Preferably, the internal diameter of the fingertip group is less than the outer diameter of the moving contact.
Preferably, the linking arm is made of insulating material.
It can be seen from the above technical proposal that the direct acting type earthing switch in the present invention includes limited block.Due to driving machine
Structure and moving contact link, if moving contact bounces off the first static contact under the action of big electric power, will lead to driving mechanism
Movement, and limited block is used to prevent the generation of the movement, then the movement that moving contact bounces off the first static contact also can not just occur.
In other words, the direct acting type earthing switch in the present invention has self-locking function in "on" position, to improve "on" position
Stability avoids the generation of failure.
Detailed description of the invention
Scheme in order to illustrate the embodiments of the present invention more clearly, below will be required to describing in embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for ability
For field technique personnel, without creative efforts, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram for the direct acting type earthing switch that a specific embodiment of the invention provides；
Fig. 2 is the schematic diagram for the separating brake that a specific embodiment of the invention provides；
Fig. 3 is the schematic diagram for the combined floodgate that a specific embodiment of the invention provides.
Wherein, 1 it is the first static contact, 11 be fingertip group, 2 be the second static contact, 3 be moving contact, 4 be drive shaft, 5 is
Connecting lever, 6 be the first pin shaft, 7 be linking arm, 8 be the second pin shaft, 9 be limited block, 10 be shell.
Specific embodiment
The invention discloses a kind of direct acting type earthing switch, which has self-locking function in "on" position
Can, so as to avoid flicking for moving contact, improve stability of the direct acting type earthing switch in "on" position.
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.Base
In the embodiment of the present invention, those of ordinary skill in the art without making creative work it is obtained it is all its
Its embodiment, shall fall within the protection scope of the present invention.
Please refer to attached drawing 1- Fig. 3.In a specific embodiment of the invention, direct acting type earthing switch includes: shell 10, first
Static contact 1, the second static contact 2, moving contact 3, driving mechanism and limited block 9.
Wherein, the first static contact 1, the second static contact 2, moving contact 3, driving mechanism and limited block 9 are arranged at shell
In 10.Moving contact 3 is contacted with the cooperation of the second static contact 2 always.Moving contact 3 is for linear motion under the driving of driving mechanism.It is dynamic
Contact 3 can be inserted into the first static contact 1 under the drive of driving mechanism, to realize combined floodgate.Moving contact 3 can also drive
It is detached under the drive of mechanism with the first static contact 1, to realize separating brake.
In "on" position, under the action of big electric power, moving contact 3 has the tendency that bouncing off the first static contact 1.Due to dynamic
Contact 3 and driving mechanism link, if moving contact 3 bounces off the first static contact 1, the movement that bounces off of moving contact 3 will lead to drive
Dynamic mechanism action, and limited block 9 is exactly for preventing the movement of driving mechanism.Because it is dynamic that this can not occur for driving mechanism
Make, then moving contact 3 also can not just bounce off the first static contact 1.In other words, the direct acting type earthing switch in the present embodiment, which has, closes
Lock self-locking function can be avoided flicking for moving contact 3, to improve the stability of direct acting type earthing switch "on" position.
Further, in order to improve the stability of direct acting type earthing switch, insulation driving mechanism is set by driving mechanism.
Driving mechanism is used merely to by the movement for being converted into moving contact 3 of drive shaft 4, without circulating current.Further,
Linking arm 7 is limited to be made of insulating material.As long as linking arm 7 insulate, then entire driving mechanism is insulation.Insulating materials
It is poor to be mechanically connected performance, and linking arm 7 is not related to being fixedly connected with drive shaft 4, therefore limits linking arm 7 by insulation material
Material is made.
In a specific embodiment of the invention, driving mechanism includes: drive shaft 4, connecting lever 5, linking arm 7, the first pin shaft 6
And second pin shaft 8.Wherein, drive shaft 4 is connected to one end of connecting lever 5, is able to drive connecting lever 5 and rotates forward or invert.Connecting lever
5 other end is pivotally connected by the first pin shaft 6 with linking arm 7.The one end of linking arm 7 far from connecting lever 5 is by the second pin shaft 8 and moves
Contact 3 is pivotally connected.The driving force of drive shaft 4 passes sequentially through connecting lever 5, linking arm 7 passes to moving contact 3, always due to moving contact 3
Cooperate with the second static contact 2, is limited to the matching relationship, moving contact 3 moves linearly under the driving of drive shaft 4.Specifically
Ground, when can limit drive shaft 4 and rotating in one direction, moving contact 3 is inserted into the first static contact 1, to realize combined floodgate；It drives
When turn axis 4 rotates to another way, moving contact 3 is extracted out from the first static contact 1, to realize separating brake.
In the present embodiment, in "on" position, i.e., when moving contact 3 is inserted into the first static contact 1, connecting lever 5 or company
Arm 7 is connect to be resisted against on limited block 9.Under the action of big electric power, moving contact 3 has the tendency that bouncing off the first static contact 1, if dynamic
Contact 3 bounces off the first static contact 1, then will lead to connecting lever 5 and linking arm 7 rotates, and limited block 9 is exactly for preventing
The generation of the rotation, then the movement that moving contact 3 bounces off the first static contact 1 also can not just occur.
Further, in "on" position, the angle of connecting lever 5 and linking arm 7 is obtuse angle.Connecting lever 5 and linking arm 7 at this time
Positioned at the side of moving contact 3, limited block 9 is also disposed at the side, and is located at the outside of connecting lever 5 or linking arm 7.And turning at this time
Arm 5 or linking arm 7 are resisted against just on limited block 9.
Further, limited block 9 and drive shaft 4 are arranged in the same side of moving contact 3.In other words, driving device
It is not located on the straight line at 3 place of moving contact, but deviates the straight line, in this way, connecting lever 5, linking arm 7 and 3 groups of moving contact
At eccentric slider-crank mechanism, as shown in attached drawing 2 and attached drawing 3.Eccentric setting can make connecting lever 5 and linking arm 7 turn width
The switch closing and switch opening of moving contact 3 is realized in lesser situation.In this way, just reducing the volume of direct acting type earthing switch, make direct acting
The structure of type earthing switch is more compact.
Attached drawing 3 is the schematic diagram to close a floodgate, and detailed process is as follows: drive shaft 4 rotates counterclockwise, connecting lever 5 and linking arm 7
It rotates counterclockwise, driving moving contact 3 moves up, and is inserted into the first static contact 1, in alignment to connecting lever 5 and linking arm 7
When, moving contact 3 reaches the upper limit, and with the further rotation of connecting lever 5 and linking arm 7, connecting lever 5 and linking arm 7 form obtuse angle, moves touching
First 3 fall after rise downwards, reach closing position.
Attached drawing 2 is the schematic diagram of separating brake, and detailed process is as follows: drive shaft 4 rotates clockwise, connecting lever 5 and linking arm 7
It rotates clockwise, and the two becomes zero angle from obtuse angle, moving contact 3 at this time arrives again at the upper limit, later connecting lever 5 and linking arm 7
Angle become obtuse angle again, eventually become acute angle, moving contact 3 completely disengages the first static contact 1.
Limited block 9 and shell 10 can be integral type, integrated machine-shaping.Or it is split type, the two passes through spiral shell
It tethers and connects.It is bolted easy to disassemble, replacement.
In a specific embodiment of the invention, guide pad, the guide pad and moving contact 3 are provided in the first static contact 1
Inner cavity clearance fit.When moving contact 3 is inserted into the first static contact 1, moving contact 3 will cover outside guide pad, moving contact
3 move under the action of guide pad is oriented to.The inner cavity of first static contact 1 is column, and moving contact 3 is cylindrical shape.Guide pad is column
Shape, and 1 coaxial line of guide pad and the first static contact.It is arranged such, it can be ensured that the moving contact 3 in the first static contact 1 of insertion begins
Whole and 1 coaxial line of the first static contact, then ensuring that moving contact 3 and the first static contact 1 have uniform contact pressure.If
Moving contact 3 and the contact pressure on 1 one side of the first static contact are small, big with the contact pressure of 1 another side of the first static contact, then straight
When flowing through high current in ejector half earthing switch, contact pressure is small largely to generate heat on one side, in turn result in ablation.
It further, is preferably isolation material by the material of guide pad.It prevents between guide pad and moving contact 3 due to contacting
It is bad and cause generate heat ablation.Since the machining accuracy of isolation material is relatively difficult to guarantee and bad mechanical property, in order to make moving contact
The material of guide pad, can be limited to the through-current capability material low compared with fingertip by the good intensity for guaranteeing guide pad simultaneously of guiding,
Such as steel.First static contact 1 and the second static contact are made of multiple fingertips, will hereafter be had and are discussed in detail.
In a specific embodiment of the invention, the first static contact 1 includes multiple fingertips.Multiple fingertips surround cylindric touching
The inner cavity of finger group 11, the fingertip group 11 is contacted with the cooperation of moving contact 3.In addition, being provided with spring part, the bullet also outside fingertip group 11
Spring part is for squeezing fingertip group 11, so that fingertip group 11 be made to have elastic enclasping force.It in the present embodiment, can be by adjusting bullet
Spring part is held tightly moving contact 3 with matching with moving contact 3 to adjust the enclasping force of the first static contact 1.Second static contact 2 can
To be set as structure identical with the first static contact 1, repeats no more herein.
Further, the internal diameter of fingertip group 11 is designed as the outer diameter less than moving contact 3, in this way, moving contact 3 enters fingertip
After group 11, fingertip group 11 can form enclasping force to moving contact 3, ensure that moving contact 3 and the stabilization of the first static contact 1 connect
Touching.
Finally, it is to be noted that, the terms "include", "comprise" or its any other variant be intended to it is non-exclusive
Property include so that include a series of elements process, method, article or equipment not only include those elements, but also
Further include other elements that are not explicitly listed, or further include for this process, method, article or equipment it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including described
There is also other identical elements in the process, method, article or equipment of element.
The above description of the disclosed embodiments, enables those skilled in the art to implement or use the present invention.It is right
A variety of modifications of these embodiments will be readily apparent to those skilled in the art, and as defined herein one
As principle can realize in other embodiments without departing from the spirit or scope of the present invention.Therefore, the present invention will
It will not be intended to be limited to the embodiments shown herein, and be to fit to consistent with the principles and novel features disclosed herein
Widest scope.
Claims (10)
1. a kind of direct acting type earthing switch, including shell (10), the first static contact (1), the second static contact (2), moving contact (3) with
And driving mechanism, which is characterized in that the driving mechanism and the moving contact (3) are linked；Setting is limited in the shell (10)
Position block (9), in "on" position, the limited block (9) is used to prevent the movement of the driving mechanism, and the movement is by described dynamic
Contact (3), which bounces off first static contact (1), to be caused.
2. direct acting type earthing switch according to claim 1, which is characterized in that the driving mechanism includes: drive shaft
(4), connecting lever (5), linking arm (7), the first pin shaft (6) and the second pin shaft (8)；One end of the connecting lever (5) and the driving
Shaft (4) connection, the other end are pivotally connected by first pin shaft (6) and the linking arm (7), and the linking arm (7) is far from institute
The one end for stating connecting lever (5) is pivotally connected by second pin shaft (8) and the moving contact (3)；
In "on" position, the connecting lever (5) or the linking arm (7) are resisted against on the limited block (9), the limited block
(9) connecting lever (5) or the linking arm (7) rotation are prevented, the rotation bounces off first stationary contact by the moving contact (3)
Head (1) causes.
3. direct acting type earthing switch according to claim 2, which is characterized in that in "on" position, the connecting lever (5) with
The angle of the linking arm (7) is obtuse angle, and the limited block (9) is arranged in the side of the moving contact (3), and is located at described turn
The outside of arm (5) or the linking arm (7).
4. direct acting type earthing switch according to claim 3, which is characterized in that the drive shaft (4) and the limit
Block (9) is located at the same side of the moving contact (3).
5. direct acting type earthing switch according to claim 3, which is characterized in that the limited block (9) and the shell
(10) it is mounted on by bolt on the inner wall of the shell (10) for integral type or the limited block (9).
6. direct acting type earthing switch according to claim 1, which is characterized in that be provided in first static contact (1)
With the guide pad of the first static contact (1) coaxial line, the inner cavity clearance fit of the guide pad and the moving contact (3).
7. direct acting type earthing switch according to claim 6, which is characterized in that the guide pad is made of isolation material.
8. direct acting type earthing switch according to claim 1, which is characterized in that first static contact (1) and described
Two static contacts include multiple fingertips, the cylindric fingertip group of the multiple fingertip composition and the moving contact (3) cooperation
(11), spring part is provided on the outside of the fingertip group (11), the spring part acts on the fingertip group (11), makes the touching
Finger group (11) has elastic enclasping force.
9. direct acting type earthing switch according to claim 8, which is characterized in that the internal diameter of the fingertip group (11) is less than institute
State the outer diameter of moving contact (3).
10. direct acting type earthing switch according to claim 2, which is characterized in that the linking arm (7) is by insulating materials system
At.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811119198.XA CN109036936B (en) | 2018-09-25 | 2018-09-25 | Direct-acting grounding switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811119198.XA CN109036936B (en) | 2018-09-25 | 2018-09-25 | Direct-acting grounding switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109036936A true CN109036936A (en) | 2018-12-18 |
| CN109036936B CN109036936B (en) | 2020-08-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811119198.XA Active CN109036936B (en) | 2018-09-25 | 2018-09-25 | Direct-acting grounding switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109036936B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112003182A (en) * | 2020-08-27 | 2020-11-27 | 杭州巨骐信息科技股份有限公司 | Intelligent grounding system applied to high-voltage cable |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3695214B2 (en) * | 1999-04-06 | 2005-09-14 | 株式会社日立製作所 | Insulated switchgear |
| CN202172032U (en) * | 2011-07-25 | 2012-03-21 | 中国西电电气股份有限公司 | High voltage grounding switch device with closing self-locking function |
| CN202352555U (en) * | 2011-11-19 | 2012-07-25 | 中国西电电气股份有限公司 | Ground switch capable of realizing self locking by utilizing electromotive force |
| CN103151212A (en) * | 2013-02-25 | 2013-06-12 | 贵州中泉电气集团有限公司 | Loop self-locking load switch |
| CN106710947A (en) * | 2017-02-07 | 2017-05-24 | 平高集团有限公司 | Direct-acting type three-station load switch and switch cabinet with load switch |
-
2018
- 2018-09-25 CN CN201811119198.XA patent/CN109036936B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3695214B2 (en) * | 1999-04-06 | 2005-09-14 | 株式会社日立製作所 | Insulated switchgear |
| CN202172032U (en) * | 2011-07-25 | 2012-03-21 | 中国西电电气股份有限公司 | High voltage grounding switch device with closing self-locking function |
| CN202352555U (en) * | 2011-11-19 | 2012-07-25 | 中国西电电气股份有限公司 | Ground switch capable of realizing self locking by utilizing electromotive force |
| CN103151212A (en) * | 2013-02-25 | 2013-06-12 | 贵州中泉电气集团有限公司 | Loop self-locking load switch |
| CN106710947A (en) * | 2017-02-07 | 2017-05-24 | 平高集团有限公司 | Direct-acting type three-station load switch and switch cabinet with load switch |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112003182A (en) * | 2020-08-27 | 2020-11-27 | 杭州巨骐信息科技股份有限公司 | Intelligent grounding system applied to high-voltage cable |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109036936B (en) | 2020-08-25 |
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