CN207752930U - A kind of high-performance earthing switch - Google Patents
A kind of high-performance earthing switch Download PDFInfo
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- CN207752930U CN207752930U CN201721554843.1U CN201721554843U CN207752930U CN 207752930 U CN207752930 U CN 207752930U CN 201721554843 U CN201721554843 U CN 201721554843U CN 207752930 U CN207752930 U CN 207752930U
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- hinged
- pedestal
- guide rod
- driving section
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Abstract
The utility model discloses a kind of high-performance earthing switches, belong to substation equipment field, including magnetic pole, foundation, pedestal, guide rod, transmission component and power packages, the bottom end intercalation of the magnetic pole is on the top of the foundation, the pedestal is mounted on foundation upper end, the guide rod hingedly carries out reciprocally swinging by the transmission component and pedestal, and the Power Component is hinged by vertical links and transmission component；The pedestal includes main base frame and is fixed at the side pedestal of main base frame side；The top of the magnetic pole is equipped with static contact, and the top of the guide rod is equipped with moving contact, and the lower end of the guide rod passes through side pedestal.The utility model has the advantages of simple structure, and the pressure angle cooperation of transmission component structure and guide rod can solve the problems, such as combined floodgate bite.
Description
Technical field
The utility model belongs to substation equipment field more particularly to a kind of high-performance earthing switch.
Background technology
550kV earthing switches（Hereinafter referred " earthing knife-switch "）Using extremely extensively in 500kV substations, it is mainly used for
500kV transforming plant primary line-to-grounds, to protect service personnel's personal safety and relevant device safety.If earthing knife-switch earthing failure,
It will lead to that the switching of substation's line related, overhaul of the equipments work is caused not to carry out on schedule, entail dangers to primary equipment when serious
Operational safety and service personnel's personal safety.Therefore, earthing knife-switch drive mechanism improves the reliability of earthing knife-switch transmission, to ensuring power transformation
The stand operation of circuit, the reliability of maintenance, safety is of great significance, and earthing knife-switch in the prior art is not conformed to due to structure
, there is combined floodgate bite in reason.
Utility model content
In view of the deficiencies of the prior art, the utility model provides a kind of high-performance earthing switch.
The utility model is to solve above-mentioned technical problem by the following technical solutions：A kind of high-performance ground connection is opened
It closes, including magnetic pole, foundation, pedestal, guide rod, transmission component and Power Component, the bottom end intercalation of the magnetic pole is in the foundation
Top, the pedestal are mounted on foundation upper end, and the guide rod hingedly carries out reciprocally swinging, institute by the transmission component and pedestal
It is hinged by vertical links and transmission component to state Power Component；
The pedestal includes main base frame and is fixed at the side pedestal of main base frame side；
The top of the magnetic pole is equipped with static contact, and the top of the guide rod is equipped with moving contact, and the lower end of the guide rod passes through
Side pedestal.
Further, the transmission component include the first driving section, the second driving section, sliding block, successively hinged main connecting lever,
First level of connecting rod, the second arm body, the first arm body and second level even the rod；The other end of the main connecting lever is hinged on the main base frame；Institute
The hinge joint for stating the first arm body and the second arm body is hinged on the main base frame；
First driving section and the second driving section are U-shaped；The both ends on first driving section top respectively with sliding block
Both sides it is hinged；The both ends of second driving section top are hinged with the both sides of the first driving section bottom respectively；Second driving section bottom
Both sides it is hinged with the both sides of side pedestal respectively；The other end of the second level even the rod and the second driving section and the first driving section are close
The hinge joint of main base frame is hinged；The slide block set is on the guide rod.
Further, the first arm body and the second arm body are vertical.
Further, the main connecting lever includes first end and the second end, is passed through between first end and the second end
One bending part is hinged, and the upper end of the vertical links passes through main base frame hinged with main connecting lever first end；Avoid main connecting lever and seat
It rubs between body, influences the folding of switch.
Further, the central axis of the guide rod and when the centerline axis parallel of magnetic pole, first driving section and bar
Between the angular range of the central axes of body is 55 ° -57 °.
Further, the guide rod includes conduit and contact tube, and the contact tube is hollow cylinder structure, inside lower end
It is arranged with conduit, the upper end of the conduit and the lower end of the contact tube are coaxially disposed；The lower end of the conduit passes through side pedestal；
The contact tube is hinged by transmission component and side pedestal, swings；The slide block set is on the contact tube, institute
The top for stating contact tube is equipped with moving contact.
Further, the side pedestal includes right baffle-plate, right shell body, bottom plate and connecting rod, the right baffle-plate, right shell body bottom
Portion is connected by bottom plate, and top is connected by connecting rod；The right baffle-plate is fixed at the side of main base frame；It is described to lead
Bar activity passes through the bottom plate.
Compared with prior art, a kind of high-performance earthing switch provided by the utility model, simple in structure, transmission component
The pressure angle of structure and drive link coordinates, and solves the problems, such as combined floodgate bite.The knot of the utility model and traditional ground knife-like switch
Structure is compared, and in the case where ensureing moving contact insertion depth, supravasal driving force improves 4 times or so.
Description of the drawings
It, below will be to needed in embodiment description in order to illustrate more clearly of the technical solution of the utility model
Attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is only one embodiment of the utility model, for
For those of ordinary skill in the art, without creative efforts, other are can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is a kind of superstructure schematic diagram of high-performance earthing switch of the utility model；
Wherein：10- contact tubes, 13- magnetic poles, 14- static contacts, 15- moving contacts；
Fig. 2 is a kind of transmission component structural schematic diagram of high-performance earthing switch of the utility model；
Wherein：The main connecting levers of 3-, 4- first level of connecting rod, 52- the first arm bodies, 51- the second arm bodies, 6- second level even the rods, 7- first are passed
Dynamic portion, the second driving sections 8-, 9- sliding blocks, 10- contact tubes, the sides 11- pedestal, 12- main base frames, 13- magnetic poles；
Fig. 3 is a kind of Power Component schematic diagram of high-performance earthing switch of the utility model；
Wherein：1- Power Components, 2- vertical links；
Fig. 4 is plane double leval jib transmission force analysis figure when earthing knife-switch has just closed position；
Fig. 5 is space four-links transmission force analysis figure when earthing knife-switch has just closed position；
Fig. 6 is the transmission force analysis figure of the contact tube and sliding block when earthing knife-switch has just closed position.
Specific implementation mode
With reference to the attached drawing in the utility model embodiment, to this implement it is novel in technical solution carry out it is clear, complete
Site preparation describes, it is clear that the described embodiments are only a part of the embodiments of the utility model, instead of all the embodiments.
Based on the embodiments of the present invention, those of ordinary skill in the art are obtained under the premise of not making creative work
Every other embodiment, shall fall within the protection scope of the present invention.
As shown in Figure 1, Figure 2, Figure 3 shows, a kind of high-performance earthing switch provided by the utility model, including magnetic pole 13, bottom
Column, pedestal, guide rod, transmission component and Power Component 1, on the top of foundation, pedestal is mounted on foundation for the bottom end intercalation of magnetic pole 13
Upper end, guide rod hingedly carry out reciprocally swinging by transmission component and pedestal, and Power Component 1 passes through vertical links 2 and transmission component
It is hinged；
Pedestal includes main base frame 12 and is fixed at the side pedestal 11 of 12 side of main base frame；
The top of magnetic pole 13 is equipped with static contact 14, and the top of guide rod is equipped with moving contact 15, and the lower end of guide rod passes through side pedestal
11。
Transmission component includes the first driving section 7, the second driving section 8, sliding block 9, successively hinged main connecting lever 3, first level of connecting rod
4, the second arm body 51, the first arm body 52 and second level even the rod 6；The other end of main connecting lever 3 is hinged on main base frame 12；First arm body 52
It is hinged on main base frame 12 with the hinge joint of the second arm body 51；
First driving section 7 and the second driving section 8 are U-shaped；The both ends on 7 top of the first driving section respectively with sliding block 9 two
Side is hinged；The both ends on 8 top of the second driving section are hinged with the both sides of 7 bottom of the first driving section respectively；Second driving section, 8 bottom
Both sides are hinged with the both sides of side pedestal 11 respectively；The other end of second level even the rod 6 and the second driving section 8 and the first driving section 7 are close
The hinge joint of main base frame 12 is hinged；Sliding block 9 is sleeved on guide rod.
First arm body 52 and the second arm body 51 are vertical.
Main connecting lever 3 includes first end and the second end, hinged by a bending part between first end and the second end；
The upper end of vertical links 10 passes through main base frame 12 hinged with 3 first end of main connecting lever, lower end and the Power Component 1 of vertical links 10
It is hinged.
When the central axis of guide rod and the centerline axis parallel of magnetic pole 13, the folder of the first driving section 7 and the central axes of the body of rod
Between angular region is 55 ° -57 °.
Guide rod includes conduit and contact tube 10, and contact tube 10 is hollow cylinder structure, and lower end internal sleeve is equipped with conduit, leads
The upper end of pipe is coaxially disposed with the lower end of contact tube 10；The lower end of conduit passes through side pedestal 11；Contact tube 10 passes through transmission component
It is hinged with side pedestal 11, it swings；Sliding block 9 is sleeved on contact tube 10, and the top of contact tube 10 is equipped with moving contact 15.
Side pedestal 11 include right baffle-plate, right shell body, bottom plate and connecting rod, right baffle-plate, right shell body bottom connected by bottom plate
Get up, top is connected by connecting rod；Right baffle-plate is fixed at the side of main base frame 12；Guide rod activity passes through bottom plate.
The present embodiment combined floodgate static mechanical is analyzed as follows：
It is M that 550 earthing switch of vertical open type, which uses SRCJ2 motor, drive torque,0=650Nm is just closed when earthing knife-switch is in
When position, stress is as shown in Figure 4, Figure 5 and Figure 6.
As shown in figure 4, rod piece b is relative to shaft O and shaft O1The arm of force is equal（=132.77）,
In above formula： L5O1- rod piece e stress F5Countershaft O1The arm of force
L5O2- rod piece e stress F5Countershaft O2The arm of force
L8O2- rod piece h stress F8Countershaft O2The arm of force
The pressure angle that α-rod piece h forms contact tube 10（Angle）
μ-such as Fig. 2, the friction coefficient between contact tube 10 and sliding block 9
The gravity of G-contact tube 10
By M0=650N·m、L5O1=138.56mm、L5O2=90.3mm、L8O2=187.13mm、α=62.38°、μ=0.35、G=
263N substitutes into formula（1）To formula（8）, can be calculated M01=650Nm, M02=420.9 Nm, F8=2250.8N, FIt is radial=
1994.3N FIt is axial=1043.5N, F=82.5N.
Radial component FIt is radialFrictional resistance, axial thrust load F are formed to 10 upward sliding of contact tubeIt is axialIt is slid up for contact tube 10
Dynamic offer driving force, and FIt is radial/FIt is axial=1.9, it is clear that the pressure angle α of contact tube 10 is unreasonable, bigger than normal.
It can be seen that, in the case where only calculating frictional resistance between contact tube 10 and sliding block 9, driving force is only 82.5N, such as
Consider other transmission link frictional resistance, driving force is obviously insufficient.This is clearly earthing knife-switch one of the reason of just closing position bite.
As shown in fig. 6, to reduce the pressure angle α of rod piece h, 9 fulcrum F of sliding block need to be moved up.And fulcrum F move up can reduce it is dynamic
The insertion depth of contact 15.It assesses after tested, in the case where ensureing the insertion depth of moving contact 15, fulcrum F is allowed to move up
Distance is 15mm, at this time pressure angle α=56.44 °, substitutes into formula（5）To formula（8）, F can be obtainedIt is radial=1875.6N, FIt is axial=
1244.3N FIt is radial/FIt is axial=1.5, the upward driving force F=325N of contact tube 10, it is clear that by reduce pressure angle, contact tube 10 to
On driving force F have increase, with 82.5N ratios before improvement, improve nearly 4 times.
The work of the utility model is specially：Such as figure, 1 Fig. 2, Fig. 3, Power Component 1（It rotates clockwise）, drive and vertically connect
Bar 2 rotates, and drives the rotation of main connecting lever 3, the transmission of first level of connecting rod 4, the transmission of the second arm body 51, the transmission of the first arm body 52, two level successively
The transmission of connecting rod 6, the transmission of the first driving section 7, the first driving section 7 drives the second driving section 8, sliding block 9 to be driven, vertical to lead thick stick 10
It completes to close a floodgate, when starting to close a floodgate, the mechanical model of the first driving section 7 and the second driving section 8 is driven for plane double leval jib, that is, leads thick stick
10 rotate from horizontal position to upright position, and the moving contact 15 for leading 10 top of thick stick at this time is contacted with static contact 14, this state is known as
" earthing knife-switch just closes position ", separating brake transmission process are opposite with combined floodgate transmission process.
Above disclosed is only specific embodiment of the present utility model, but the scope of protection of the utility model not office
It is limited to this, any one skilled in the art within the technical scope disclosed by the utility model, can readily occur in change
Change or modification, should be covered within the scope of the utility model.
Claims (7)
1. a kind of high-performance earthing switch, it is characterised in that：Including magnetic pole（13）, foundation, pedestal, guide rod, transmission component and dynamic
Power component（1）, the magnetic pole（13）Bottom end intercalation on the top of the foundation, the pedestal is mounted on foundation upper end,
The guide rod hingedly carries out reciprocally swinging, the Power Component by the transmission component and pedestal（1）By vertically connecting
Bar（2）It is hinged with transmission component；
The pedestal includes main base frame（12）Be fixed at main base frame（12）The side pedestal of side（11）；
The magnetic pole（13）Top be equipped with static contact（14）, the top of the guide rod is equipped with moving contact（15）, the guide rod
Lower end passes through side pedestal（11）.
2. high-performance earthing switch according to claim 1, it is characterised in that：The transmission component includes the first driving section
（7）, the second driving section（8）, sliding block（9）, hinged main connecting lever successively（3）, first level of connecting rod（4）, the second arm body（51）, the first arm
Body（52）And second level even the rod（6）；The main connecting lever（3）The other end be hinged on the main base frame（12）On；The first arm body
（52）With the second arm body（51）Hinge joint be hinged on the main base frame（12）On；
First driving section（7）With the second driving section（8）It is U-shaped；First driving section（7）The both ends on top respectively with
Sliding block（9）Both sides it is hinged；Second driving section（8）The both ends on top respectively with the first driving section（7）The both sides of bottom are hinged；The
Two driving sections（8）The both sides of bottom respectively with side pedestal（11）Both sides it is hinged；The second level even the rod（6）The other end and second
Driving section（8）With the first driving section（7）Close to main base frame（12）Hinge joint be hinged；The sliding block（9）It is sleeved on described
On guide rod.
3. high-performance earthing switch according to claim 2, it is characterised in that：The first arm body（52）With the second arm body
（51）Vertically.
4. high-performance earthing switch according to claim 2, it is characterised in that：The main connecting lever（3）Including first end and
The second end, hinged by a bending part between first end and the second end, the vertical links（2）Upper end pass through the seat of honour
Body（12）With main connecting lever（3）First end is hinged.
5. high-performance earthing switch according to claim 2, it is characterised in that：The central axis and magnetic pole of the guide rod（13）
Centerline axis parallel when, first driving section（7）Between angular range with the central axes of the body of rod is 55 ° -57 °.
6. high-performance earthing switch according to claim 2, it is characterised in that：The guide rod includes conduit and contact tube
（10）, the contact tube（10）For hollow cylinder structure, lower end internal sleeve is equipped with conduit, and the upper end of the conduit is led with described
Fulgurite（10）Lower end coaxial arrangement；The lower end of the conduit passes through side pedestal（11）；The contact tube（10）Pass through transmission group
Part and side pedestal（11）It is hinged, it swings；The sliding block（9）It is sleeved on the contact tube（10）On, the contact tube
（10）Top be equipped with moving contact（15）.
7. high-performance earthing switch according to claim 1, it is characterised in that：The side pedestal（11）Including right baffle-plate, the right side
Baffle, bottom plate and connecting rod, the right baffle-plate, right shell body bottom connected by bottom plate, top connected by connecting rod；Institute
It states right baffle-plate and is fixed at main base frame（12）Side；The guide rod activity passes through the bottom plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721554843.1U CN207752930U (en) | 2017-11-20 | 2017-11-20 | A kind of high-performance earthing switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721554843.1U CN207752930U (en) | 2017-11-20 | 2017-11-20 | A kind of high-performance earthing switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207752930U true CN207752930U (en) | 2018-08-21 |
Family
ID=63146158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721554843.1U Active CN207752930U (en) | 2017-11-20 | 2017-11-20 | A kind of high-performance earthing switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207752930U (en) |
-
2017
- 2017-11-20 CN CN201721554843.1U patent/CN207752930U/en active Active
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