CN112750647A - Static contact of grounding switch and straight-swinging plug-in type grounding switch - Google Patents
Static contact of grounding switch and straight-swinging plug-in type grounding switch Download PDFInfo
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- CN112750647A CN112750647A CN202011452446.XA CN202011452446A CN112750647A CN 112750647 A CN112750647 A CN 112750647A CN 202011452446 A CN202011452446 A CN 202011452446A CN 112750647 A CN112750647 A CN 112750647A
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- grounding switch
- static contact
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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
- H01H31/02—Details
- H01H31/023—Base and stationary contacts mounted thereon
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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
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Abstract
本发明涉及一种接地开关静触头及直抡插入式接地开关，接地开关静触头包括：上筒部，其内设有静触指；下导向罩，固设在上筒部下端，导向通道一端为开放端，另一端为封闭端；封闭端突出布置有弹性缓冲件，弹性缓冲件朝向所述导向通道布置，用于与摆动进入导向通道的动触头弹性顶压配合，使动触头缓冲减速。在动触头摆动进入导向通道并移动至导向通道尽头时，会与弹性缓冲件弹性顶压配合，由弹性缓冲件对动触头缓冲减速并停止，方便下一步沿直线向上插入上筒部中，以与内部设置的静触指导电连接。利用朝向导向通道的弹性缓冲件对动触头进行缓冲，方便选取合适弹性系数的弹性缓冲件，安装也较为方便。
The invention relates to a grounding switch static contact and a direct-swivel plug-in grounding switch. The grounding switch static contact comprises: an upper cylinder part, which is provided with static contact fingers; and a lower guide cover, which is fixed on the lower end of the upper cylinder part and guides One end of the channel is an open end, and the other end is a closed end; the closed end is protrudingly arranged with an elastic buffer member, and the elastic buffer member is arranged toward the guide channel for elastic pressing fit with the moving contact that swings into the guide channel, so that the moving contact Head buffering slows down. When the movable contact swings into the guide channel and moves to the end of the guide channel, it will elastically press fit with the elastic buffer member, and the elastic buffer member will buffer the movable contact to decelerate and stop, which is convenient for the next step to be inserted into the upper cylinder in a straight line. , to electrically connect with the static contact guide set inside. The movable contact is buffered by the elastic buffer member facing the guide channel, which facilitates the selection of the elastic buffer member with a suitable elastic coefficient and is also convenient for installation.
Description
Technical Field
The invention belongs to the technical field of grounding switches, and particularly relates to a static contact of a grounding switch and a straight-swinging plug-in type grounding switch.
Background
The high-voltage AC grounding switch belongs to a common switch device in an electric power system, is mainly used for reliably grounding electrical equipment such as a high-voltage bus, an isolating switch and the like to be overhauled, replaces a portable grounding wire, reliably grounds high-voltage equipment and a circuit, and protects personal and property safety. The grounding part can bear short-circuit current under abnormal conditions, such as system short-circuit current, for a certain time.
At present, a grounding switch generally adopts a folding arm type or a straight swinging type, wherein the straight swinging type grounding switch has the advantages of simple structure, low failure rate, high speed of a moving contact at the tail end of a stroke, and severe collision when the moving contact is contacted with a static contact. In a straight-swinging type grounding switch structure, a straight-swinging insertion type structure is adopted, a grounding conductive rod firstly rotates upwards in a vertical plane to enable a moving contact on the grounding conductive rod to approach a static contact, then the moving contact moves upwards in a straight line to enable the moving contact to be inserted into the static contact, and the switching-on action is completed. The last direct-acting insertion mode can effectively reduce impact force during closing, the action is more stable, and the contact between the moving contact and the static contact is better.
Above-mentioned directly swing bayonet structure and expect much to the static contact, the static contact structure as disclose in the chinese utility model patent that the grant bulletin number is CN211404313U, including the direction cover, the direction cover includes section of thick bamboo portion and direction passageway, fixed mounting has the contact of tube-shape to touch the finger in the section of thick bamboo portion, supplies the moving contact to cut straightly and gets into, direction passageway is located section of thick bamboo portion lower extreme, direction passageway is the V-arrangement, direction passageway's end and section of thick bamboo portion intercommunication, directly swing when rocking bayonet ground connection conducting rod along switching on the passageway swing to direction passageway end and target in place, correspond from top to bottom with section of thick bamboo portion, the straight line motion that makes progress of ground connection conducting rod, can touch with ground. For preventing the moving contact striking, set up buffer on the inside wall of direction passageway, this buffer is including the relative buffer plate that sets up on direction passageway entry both sides inner wall, the buffer plate adopts elastic material to make, the head end of buffer plate is fixed on the inner wall of direction passageway through insulating cushion, the tail end of buffer plate sets up relatively and forms the export, the export is less than moving contact rod footpath, after the moving contact gets into direction passageway, because the export is less than moving contact rod footpath, the buffer plate can provide the buffering braking to the moving contact, thereby reduce moving contact speed, avoid the moving contact rigidity striking to appear at the direction passageway end.
However, the method of arranging the buffer sheet has limited blocking effect on the moving contact, and is not easy to design and manufacture, and if the opening is large and the elastic force of the buffer sheet is small, the blocking effect is poor; if the opening is small, when the elastic force of the buffer sheet is large, the moving contact is easily scratched and abraded, in order to improve the conductivity, a silver coating is usually arranged outside the moving contact, after the moving contact is used for a period of time, the moving contact is seriously abraded, and the replacement and maintenance cost is high.
Disclosure of Invention
The invention aims to provide a static contact of a grounding switch, which aims to solve the technical problems that in the prior art, buffer sheets are arranged on the inner walls of two sides of a guide channel to have limited blocking effect when a moving contact is buffered and braked, and the moving contact is not easy to design and manufacture. Meanwhile, the invention also provides a straight-swinging plug-in type grounding switch using the grounding switch static contact.
In order to achieve the above purpose, the technical scheme of the static contact of the grounding switch provided by the invention is as follows: a static contact of a grounding switch, comprising:
the upper cylinder part extends along the up-down direction, and is internally provided with a static contact finger which is used for conducting insertion matching with a moving contact of a grounding cutter bar of the straight swinging insertion type grounding switch;
the lower guide cover is fixedly arranged at the lower end of the upper barrel part and is provided with a guide channel extending along the radial direction of the upper barrel part, one end of the guide channel is an open end for a moving contact of the grounding cutter bar to swing and enter, and the other end of the guide channel is a closed end and is used for being matched with the moving contact top pressure stop to limit the swinging stroke of the grounding cutter bar;
the elastic buffer piece is arranged at the closed end in a protruding mode, faces the guide channel and is used for being matched with a moving contact which swings to enter the guide channel in an elastic jacking mode, and the moving contact is made to buffer and decelerate.
The beneficial effects are that: in the static contact of the grounding switch provided by the invention, the closed end of the guide channel is provided with the elastic buffer piece which is arranged towards the guide channel, when the moving contact swings into the guide channel and moves to the end of the guide channel, the elastic buffer piece is matched with the elastic buffer piece in an elastic jacking manner, and the moving contact is buffered, decelerated and stopped by the elastic buffer piece, so that the moving contact can be conveniently inserted into the upper barrel part upwards along a straight line in the next step to be electrically connected with the static contact guide arranged inside. Utilize the elastic buffer who faces direction passageway to cushion the moving contact, conveniently select the elastic buffer of suitable elastic coefficient, it is also comparatively convenient to install, and is difficult to cause scraping wearing and tearing to the moving contact, has reduced the extra wearing and tearing to the moving contact, guarantees the life of moving contact.
As a further improvement, the elastic buffer is a rubber piece.
The beneficial effects are that: the rubber part is selected, so that the structure is simple, the manufacturing is convenient, and the fixed installation is convenient.
As a further improvement, the elastic buffer member is detachably and fixedly installed at the closed end of the guide channel.
The beneficial effects are that: can realize dismantling and replacing, and is convenient for maintenance and replacement.
As a further improvement, the elastic buffer member is detachably fixedly mounted at the closed end of the guide channel by a fastening bolt.
The beneficial effects are that: and the fastening bolts are adopted to facilitate disassembly, assembly and replacement.
As a further improvement, a mounting plate is fixedly assembled on the upper cylinder part, and the fastening bolt penetrates through the lower guide cover and is fixedly assembled with the mounting plate.
The beneficial effects are that: the mounting panel is with last barrel part and guide housing fixed assembly down respectively, can effectively improve the self structural strength of whole static contact.
As a further improvement, the mounting plate is of an L-shaped structure and comprises a transverse plate part and a vertical plate part, the transverse plate part and the top end of the upper barrel part are fixedly assembled, and the vertical plate part and the fastening bolt are fixedly assembled together.
The beneficial effects are that: the mounting panel designs into L shape structure, conveniently with last barrel portion and guide housing fixed assembly down.
As a further improvement, a first locking nut is screwed on the fastening bolt and is positioned outside the lower guide cover, and the fastening bolt and the lower guide cover are fixedly assembled together by the first locking nut; and a second locking nut is screwed on the fastening bolt and fixedly assembles the fastening bolt and the mounting plate together by the second locking nut.
The beneficial effects are that: different locking nuts are arranged, so that the fastening bolt and the lower guide cover can be conveniently fixedly assembled, and the fastening bolt and the mounting plate can be fixedly assembled.
As a further improvement, a contact finger cylinder is fixedly arranged in the upper cylinder part, a plurality of separation seams are arranged on the contact finger cylinder to form a plurality of static contact fingers, a ring table is arranged below the contact finger cylinder in the upper cylinder part, a central hole is formed in the ring table, a guide sleeve is fixedly assembled at an upper end orifice of the central hole, and the guide sleeve is used for guiding the moving contact to be inserted into the contact finger cylinder upwards along a straight line.
The beneficial effects are that: and a guide sleeve is fixedly arranged in the upper cylinder part to guide and guide the moving contact to be inserted into the contact finger cylinder along a straight line.
As a further improvement, the guide sleeve is a self-lubricating sleeve.
The beneficial effects are that: adopt self-lubricating cover, can provide the lubrication for the moving contact, reduce the scraping to the moving contact.
The technical scheme of the straight-swinging plug-in type grounding switch provided by the invention is as follows:
a straight-swinging plug-in earthing switch comprising:
the grounding cutter bar is provided with a moving contact;
the static contact is used for being in conductive insertion fit with the moving contact;
the static contact includes:
the upper cylinder part extends along the up-down direction, and is internally provided with a static contact finger which is used for conducting insertion matching with a moving contact of a grounding cutter bar of the straight swinging insertion type grounding switch;
the lower guide cover is fixedly arranged at the lower end of the upper barrel part and is provided with a guide channel extending along the radial direction of the upper barrel part, one end of the guide channel is an open end for a moving contact of the grounding cutter bar to swing and enter, and the other end of the guide channel is a closed end and is used for being matched with the moving contact top pressure stop to limit the swinging stroke of the grounding cutter bar;
the elastic buffer piece is arranged at the closed end in a protruding mode, faces the guide channel and is used for being matched with a moving contact which swings to enter the guide channel in an elastic jacking mode, and the moving contact is made to buffer and decelerate.
The beneficial effects are that: in the static contact of the straight-swinging plug-in type grounding switch, the closed end of the guide channel is provided with the elastic buffer piece which is arranged towards the guide channel, when the moving contact swings into the guide channel and moves to the end of the guide channel, the elastic buffer piece can be matched with the elastic buffer piece in an elastic jacking manner, the moving contact is buffered, decelerated and stopped by the elastic buffer piece, and the moving contact can be conveniently inserted into the upper barrel part upwards along a straight line in the next step so as to be electrically connected with the static contact guide arranged inside. Utilize the elastic buffer who faces direction passageway to cushion the moving contact, conveniently select the elastic buffer of suitable elastic coefficient, it is also comparatively convenient to install, and is difficult to cause scraping wearing and tearing to the moving contact, has reduced the extra wearing and tearing to the moving contact, guarantees the life of moving contact.
As a further improvement, the elastic buffer is a rubber piece.
The beneficial effects are that: the rubber part is selected, so that the structure is simple, the manufacturing is convenient, and the fixed installation is convenient.
As a further improvement, the elastic buffer member is detachably and fixedly installed at the closed end of the guide channel.
The beneficial effects are that: can realize dismantling and replacing, and is convenient for maintenance and replacement.
As a further improvement, the elastic buffer member is detachably fixedly mounted at the closed end of the guide channel by a fastening bolt.
The beneficial effects are that: and the fastening bolts are adopted to facilitate disassembly, assembly and replacement.
As a further improvement, a mounting plate is fixedly assembled on the upper cylinder part, and the fastening bolt penetrates through the lower guide cover and is fixedly assembled with the mounting plate.
The beneficial effects are that: the mounting panel is with last barrel part and guide housing fixed assembly down respectively, can effectively improve the self structural strength of whole static contact.
As a further improvement, the mounting plate is of an L-shaped structure and comprises a transverse plate part and a vertical plate part, the transverse plate part and the top end of the upper barrel part are fixedly assembled, and the vertical plate part and the fastening bolt are fixedly assembled together.
The beneficial effects are that: the mounting panel designs into L shape structure, conveniently with last barrel portion and guide housing fixed assembly down.
As a further improvement, a first locking nut is screwed on the fastening bolt and is positioned outside the lower guide cover, and the fastening bolt and the lower guide cover are fixedly assembled together by the first locking nut; and a second locking nut is screwed on the fastening bolt and fixedly assembles the fastening bolt and the mounting plate together by the second locking nut.
The beneficial effects are that: different locking nuts are arranged, so that the fastening bolt and the lower guide cover can be conveniently fixedly assembled, and the fastening bolt and the mounting plate can be fixedly assembled.
As a further improvement, a contact finger cylinder is fixedly arranged in the upper cylinder part, a plurality of separation seams are arranged on the contact finger cylinder to form a plurality of static contact fingers, a ring table is arranged below the contact finger cylinder in the upper cylinder part, a central hole is formed in the ring table, a guide sleeve is fixedly assembled at an upper end orifice of the central hole, and the guide sleeve is used for guiding the moving contact to be inserted into the contact finger cylinder upwards along a straight line.
The beneficial effects are that: and a guide sleeve is fixedly arranged in the upper cylinder part to guide and guide the moving contact to be inserted into the contact finger cylinder along a straight line.
As a further improvement, the guide sleeve is a self-lubricating sleeve.
The beneficial effects are that: adopt self-lubricating cover, can provide the lubrication for the moving contact, reduce the scraping to the moving contact.
Drawings
Fig. 1 is a schematic structural diagram of a straight-swinging plug-in type grounding switch provided by the invention;
fig. 2 is a schematic structural view of a stationary contact in fig. 1;
fig. 3 is a partial cross-sectional view of the stationary contact shown in fig. 2.
Description of reference numerals:
1. grounding the cutter bar; 2. static contact; 3. a support insulator; 4. assembling a base; 5. an upper cylinder part; 6. an operating mechanism; 7. mounting a plate; 71. a lateral plate portion; 72. a vertical plate portion; 8. a finger touching base; 9. a stationary contact finger; 10. a spring; 11. a lower guide housing; 12. an elastic buffer member; 13. fastening a bolt; 131. a first lock nut; 132. a second lock nut; 14. a step; 15. a guide sleeve; 16. a finger touching barrel; 17. and (4) a ring table.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, elements recited by the phrase "comprising an … …" do not exclude the inclusion of such elements in processes or methods.
In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" when they are used are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from specific situations.
In the description of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the term "provided" may be used in a broad sense, for example, the object of "provided" may be a part of the body, or may be arranged separately from the body and connected to the body, and the connection may be a detachable connection or a non-detachable connection. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from specific situations.
The present invention will be described in further detail with reference to examples.
The invention provides a straight-swinging plug-in type grounding switch, which comprises the following specific embodiments 1:
in the static contact 2 of the grounding switch provided by the invention, the elastic buffer part 12 is arranged at the closed end of the guide channel, the elastic buffer part 12 is arranged over against the guide channel, and when the moving contact swings into the guide channel and moves to the end of the guide channel, the elastic buffer part 12 can be elastically pressed and matched with the elastic buffer part 12 to buffer, slow down and stop the moving contact, so that the moving contact can be conveniently inserted into the upper cylinder part 5 upwards along a straight line in the next step to be electrically connected with the contact finger cylinder 16 arranged inside. The moving contact is buffered by the elastic buffer part 12 facing the guide channel, the elastic buffer part 12 with a proper elastic coefficient is conveniently selected, the installation is also convenient, the scraping abrasion to the moving contact is not easy to cause, the additional abrasion to the moving contact is reduced, and the service life of the moving contact is ensured.
The grounding switch in the embodiment is a straight swinging insertion type grounding switch, and the structure of the grounding switch is shown in figure 1, and the grounding switch comprises a base assembly 4, wherein a grounding cutter rod 1 is movably assembled on the base, a moving contact is arranged at the free end of the grounding cutter rod 1, and an operating mechanism 6 is further arranged on the base assembly 4 and used for driving the grounding cutter rod 1 to swing and move straight through a transmission mechanism, so that straight swinging insertion type assembly is completed.
In fact, in the grounding switch, the transmission structure for realizing the straight swinging insertion of the grounding cutter bar 1 is the prior art, and specifically, reference may be made to the grounding cutter assembly and the matched transmission mechanism disclosed in the chinese utility model patent with the publication number of CN209912789U, and details thereof are not repeated herein.
The fixed assembly has supporting insulator 3 on base assembly 4, fixed assembly has static contact 2 on supporting insulator 3, static contact 2 is used for electrically conductive grafting with the moving contact on the ground connection cutter arbor 1, the structure of static contact 2 is as shown in fig. 2 and fig. 3, including integrative last section of thick bamboo 5 and the lower guide housing 11 that sets up, go up section of thick bamboo 5 and extend along upper and lower direction, top fixed mounting at last section of thick bamboo 5 has and touches finger seat 8, touch finger seat 8 passes through screw and last section of thick bamboo 5 fixed assembly, it touches finger section of thick bamboo 16 to set up on the finger seat 8, it sets up a plurality of spacing gaps in order to form a plurality of stationary contact fingers 9 to touch on the finger section of thick bamboo 16, it supplies the moving contact grafting of ground connection cutter arbor 1 to touch finger section of thick bamboo 16, the moving contact is electrically conductive with stationary contact finger 9.
In order to enhance the contact strength, the spring 10 is hooped outside the contact finger cylinder 16, the lower part of each static contact finger 9 is respectively provided with an inner convex section so as to form an annular groove on the outer peripheral surface of the contact finger cylinder 16, the spring 10 is hooped and sleeved on the annular groove, and the inner side surface of the inner convex section of each static contact finger 9 is used for being in conductive connection with the moving contact.
In this embodiment, a ring platform 17 is disposed in the upper cylinder portion 5 below the contact finger cylinder 16, the ring platform 17 forms a central hole, a guide sleeve 15 is fixedly mounted at an upper end opening of the central hole, and the guide sleeve 15 is used for guiding the movable contact to be inserted into the contact finger cylinder 16 in a straight line upward. The inner edge of the annular table 17 is provided with a sunken step 14 to form a counter bore structure, a guide sleeve 15 is fixed on the step 14 in a tight fit manner by gluing, and the lower end of the guide sleeve 15 is provided with a conical guide part for guiding the moving contact to be inserted into the contact finger cylinder 16 upwards along a straight line. To ensure effective guidance, the inner diameter of the guide sleeve 15 is smaller than the inner diameter of the central bore of the ring table 17. In addition, in order to reduce the abrasion to the moving contact, the guide sleeve 15 is a self-lubricating sleeve which is processed and supported by a self-lubricating material, for example, graphite and polytetrafluoroethylene can be processed to form the self-lubricating sleeve, and the self-lubricating sleeve has certain lubricity.
In this embodiment, since the tool holder is adapted to the straight-swinging insertion type grounding tool bar 1, the lower guide cover 11 is provided with the guide channel, and the guide channel is integrally V-shaped, so that the moving contact can be conveniently guided to swing into the tool holder. One end of the guide channel is an open end, the other end of the guide channel is a closed end, the open end is used for the moving contact of the grounding cutter bar 1 to swing, the space near the closed end of the guide channel is communicated with the inner cavity of the upper barrel part 5, and the moving contact swinging to the closed end can enter the upper barrel part 5 along a straight line. In order to reduce the swing speed of the moving contact, an elastic buffer part 12 is fixedly arranged at the closed end, the elastic buffer part 12 is a rubber part, and the elastic buffer part 12 is arranged towards the guide channel in a facing manner so as to be matched with the moving contact which swings into the guide channel in an elastic jacking manner to enable the moving contact to buffer and decelerate.
The inner side wall of the corresponding closed end of the lower guide cover 11 is provided with a groove, the rubber piece is embedded in the groove and is fixedly installed on the lower guide cover 11 through a fastening bolt 13, correspondingly, a first locking nut 131 is screwed on the fastening bolt 13, the first locking nut 131 is positioned outside the lower guide cover 11, and the fastening bolt 13 and the lower guide cover 11 are fixedly assembled together through the first locking nut 131.
Generally, to avoid the fastening bolt 13 from affecting the movable contact, the rubber member is designed into a sleeve structure, so that the bolt head of the fastening bolt 13 is hidden in the inner cavity of the sleeve.
Of course, to ensure a proper elastic pressing, the rubber member is disposed to protrude from the closed end of the lower guide housing 11.
In this embodiment, the mounting plate 7 is fixedly mounted on the static contact 2 for fixedly mounting the static contact 2 on the supporting insulator 3, the mounting plate 7 is integrally of an L-shaped structure, and includes a horizontal plate portion 71 and a vertical plate portion 72, the horizontal plate portion 71 is fixedly assembled with the top end of the upper barrel portion 5, the vertical plate portion 72 is fixedly assembled with the fastening bolt 13, and the fastening bolt 13 fixedly mounts the rubber member on the lower guide cover 11. Actually, two second lock nuts 132 are screwed on the fastening bolt 13, and the two second lock nuts 132 are located on both sides of the vertical plate portion 72 to fixedly fit the fastening bolt 13 and the mounting plate 7 together. In this way, the lower guide cover 11 and the mounting plate 7 can be fastened and mounted together by the fastening bolt 13, and the strength of the entire stationary contact 2 can be effectively improved.
In practice, the horizontal plate portion 71 is fixedly assembled with the contact finger seat 8 through a fixing bolt, the horizontal plate portion 71 is electrically connected with the contact finger seat 8, and a screw mounting hole is further formed in the horizontal plate portion 71 for fixedly and electrically connecting a bus bar or a cable connection end with the horizontal plate portion 71 through a screw so as to electrically connect an external lead with the contact finger seat 8.
It should be noted that, in order to optimize the external electric field, the edge of the lower guide housing 11 is further provided with a circular arc-shaped flanging structure.
In the straight-swinging insertion type grounding switch provided by the embodiment, when the operating mechanism 6 drives the grounding knife bar 1 to swing towards the static contact 2, the moving contact swings into the guide channel until the moving contact is matched with the elastic buffer 12 in an elastic jacking manner and rotates to a proper position, then the grounding knife bar 1 moves upwards along a straight line, is inserted into the contact finger cylinder 16 under the guidance of the guide sleeve 15 and is in conductive contact with the static contact finger 9, and the switching-on operation of the grounding switch is completed. During opening, the moving contact linearly exits the contact finger cylinder 16 and then reversely leaves the lower guide housing 11 along the guide channel.
Because the elastic buffer part is arranged at the closed end corresponding to the guide channel, the elastic buffer part can directly generate elastic impact with the moving contact, and effective buffering and energy absorption are realized, so that the speed of the moving contact can be quickly reduced. And the elastic buffer piece arranged at the closed end is only used for the forward impact of the moving contact, so that strong scraping can not occur, and excessive abrasion to the moving contact is avoided.
The invention provides a straight-swinging plug-in type grounding switch, which comprises the following specific embodiment 2:
it differs from example 1 mainly in that: in example 1, the elastic buffer member is a rubber member. In this embodiment, the elastic buffer member is a pressure spring, two coils of spring wires at the bottom of the pressure spring are fixed on the closed end through a pressure plate, and the pressure plate is fixedly installed on the closed end through a fastening screw.
The invention provides a straight-swinging plug-in type grounding switch, and the specific embodiment 3 thereof is as follows:
the difference from example 1 is mainly that: in embodiment 1, the elastic buffer member is detachably fixedly mounted in the groove using a fastening bolt. In this embodiment, the rubber part as the elastic buffer part can also be inserted into the groove in a tight fit manner, and at the moment, the rubber part is not easy to fall off accidentally because the rubber part is forced to be pressed into the groove by the impact force frequently received by the rubber part.
The invention provides a straight-swinging plug-in type grounding switch, and the specific embodiment 4 thereof is as follows:
it differs from example 1 mainly in that; embodiment 1, the elastic buffer member is detachably fixedly installed at the closed end of the guide passage. In this embodiment, the rubber element as an elastic buffer element can also be adhesively fixed in the corresponding recess, in which case the removal is not very convenient.
The invention provides a straight-swinging plug-in type grounding switch, and the specific embodiment 5 thereof is as follows:
the difference from example 1 is mainly that: in embodiment 1, the mounting plate is fixedly attached to the lower guide cover via a fastening bolt as well as to the upper cylinder. In this embodiment, the mounting plate is fixedly assembled with only the upper cylinder portion, and at this time, the rubber member may be detachably fixedly mounted at the closed end of the guide passage using a fastening screw.
The invention provides a straight-swinging plug-in type grounding switch, and the concrete embodiment 6 is as follows:
the difference from example 1 is mainly that: in embodiment 1, a guide sleeve for guiding the movable contact to be inserted into the contact finger cylinder is disposed below the contact finger cylinder of the upper cylinder portion, and the guide sleeve is a self-lubricating sleeve. In this embodiment, the structure of the upper barrel and the components therein can also refer to the structure in the license publication No. CN211404313U, as long as the elastic buffer room is provided at the closed end of the guide channel.
In the embodiment of the stationary contact of the grounding switch provided by the present invention, the structure of the stationary contact of the grounding switch in the embodiment is the same as that of the stationary contact in the above-mentioned straight-swinging plug-in type grounding switch embodiment 1, and details are not repeated here.
Of course, in other embodiments, the structure of the fixed contact of the ground switch may also adopt the fixed contact structure in any one of embodiments 2 to 6 of the straight-swinging plug-in type ground switch, and will not be described herein again.
Finally, although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments without departing from the inventive concept, or some of the technical features may be replaced with equivalents. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011452446.XA CN112750647B (en) | 2020-12-11 | 2020-12-11 | A static contact of an earthing switch and a straight plug-in earthing switch |
| PCT/CN2021/113048 WO2022121361A1 (en) | 2020-12-11 | 2021-08-17 | Static contact of grounding switch, and straight-swing plug-in type grounding switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011452446.XA CN112750647B (en) | 2020-12-11 | 2020-12-11 | A static contact of an earthing switch and a straight plug-in earthing switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112750647A true CN112750647A (en) | 2021-05-04 |
| CN112750647B CN112750647B (en) | 2023-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011452446.XA Active CN112750647B (en) | 2020-12-11 | 2020-12-11 | A static contact of an earthing switch and a straight plug-in earthing switch |
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| Country | Link |
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| CN (1) | CN112750647B (en) |
| WO (1) | WO2022121361A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022121361A1 (en) * | 2020-12-11 | 2022-06-16 | 平高集团有限公司 | Static contact of grounding switch, and straight-swing plug-in type grounding switch |
| CN116153680A (en) * | 2021-11-19 | 2023-05-23 | 河南平高电气股份有限公司 | A static contact structure and an earthing switch using the static contact structure |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118800613B (en) * | 2024-09-13 | 2024-11-29 | 唐恩(厦门)电气有限公司 | A high voltage isolating switch with self-locking function |
| CN120149096B (en) * | 2025-03-05 | 2025-08-01 | 北京双杰电气股份有限公司 | A grounding switch and solid insulation ring network cabinet using the same |
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| CN112750647B (en) * | 2020-12-11 | 2023-09-01 | 平高集团有限公司 | A static contact of an earthing switch and a straight plug-in earthing switch |
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| CN104252990A (en) * | 2013-05-29 | 2014-12-31 | 国家电网公司 | A HVDC grounding switch and a stationary contact component thereof |
| CN104979126A (en) * | 2015-06-19 | 2015-10-14 | 中国西电电气股份有限公司 | Extra-high-voltage direct-current grounding switch |
| CN205004241U (en) * | 2015-09-16 | 2016-01-27 | 湖南天鹰隔离开关有限公司 | Isolating switch |
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| CN208077860U (en) * | 2018-03-18 | 2018-11-09 | 深圳供电局有限公司 | An isolating switch for a substation |
| CN208637321U (en) * | 2018-08-23 | 2019-03-22 | Abb瑞士股份有限公司 | Contact unit and corresponding high-voltage switch component for high-voltage switch component |
| CN209912789U (en) * | 2019-04-11 | 2020-01-07 | 河南平高电气股份有限公司 | Direct type earthing switch and its earthing knife assembly |
| CN211404313U (en) * | 2019-11-13 | 2020-09-01 | 湖南长高高压开关集团股份公司 | Direct-drive insertion type grounding switch contact with buffering and guiding functions |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022121361A1 (en) * | 2020-12-11 | 2022-06-16 | 平高集团有限公司 | Static contact of grounding switch, and straight-swing plug-in type grounding switch |
| CN116153680A (en) * | 2021-11-19 | 2023-05-23 | 河南平高电气股份有限公司 | A static contact structure and an earthing switch using the static contact structure |
| CN116153680B (en) * | 2021-11-19 | 2026-01-27 | 河南平高电气股份有限公司 | Static contact structure and grounding switch using same |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022121361A1 (en) | 2022-06-16 |
| CN112750647B (en) | 2023-09-01 |
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