CN212695063U - Fast switching operation mechanism - Google Patents
Fast switching operation mechanism Download PDFInfo
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- CN212695063U CN212695063U CN202021822916.2U CN202021822916U CN212695063U CN 212695063 U CN212695063 U CN 212695063U CN 202021822916 U CN202021822916 U CN 202021822916U CN 212695063 U CN212695063 U CN 212695063U
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Abstract
The application provides a quick switching operation mechanism, which comprises a base, a bidirectional switching disconnecting link and a disconnecting link connecting moving contact, wherein the disconnecting link connecting moving contact is arranged on the base; the bidirectional switching disconnecting link is hinged with the disconnecting link connecting moving contact and can rotate towards two sides of the disconnecting link connecting moving contact, so that the disconnecting link connecting moving contact is electrically connected with the protection static contact or the short circuit grounding static contact respectively; the bidirectional switching disconnecting link is provided with a switching operation handle, the base is provided with an interlocking lock catch, and the interlocking lock catch is used for locking the switching operation handle when the bidirectional switching disconnecting link is switched on with the protection static contact or the short circuit grounding static contact. The connection mode of the secondary circuit of the current transformer can be rapidly switched through the bidirectional switching knife switch, so that the operation efficiency is improved.
Description
Technical Field
The application relates to the technical field of electric equipment, and more particularly relates to a fast switching operating mechanism.
Background
When the electric power system is overhauled, the short circuit is needed to withdraw from the secondary current loop of the corresponding current transformer, so that the current loop of the overhauling equipment and the current loop of the operating equipment are isolated. Achieving this function requires the use of a high current switching operator component, commonly referred to as a high current switching terminal at the substation, to enable continuity or isolation of the secondary current loop. The operations mainly aim at isolating a secondary current loop with bus differential protection in a double-bus and sectional bus connection mode, line protection in an 3/2 connection mode and transformer protection from a secondary loop of a current transformer of the overhauled equipment.
At present, a large-current switching operation part adopted by an electric power system is mainly a bolt type switching part, and because the operation part of the switching part is of a bolt structure, the connecting bolts are required to be rotated for multiple circles in the operation process, and one operation usually comprises four or five bolts, so that the operation time is long, and the operation efficiency is extremely low.
SUMMERY OF THE UTILITY MODEL
In view of this, the present application provides a fast switching operation mechanism for improving operation efficiency when switching a connection mode of a secondary circuit of a current transformer.
In order to achieve the above object, the following solutions are proposed:
a quick switching operation mechanism comprises a base, a bidirectional switching disconnecting link and a disconnecting link connecting static contact arranged on the base, wherein a protection static contact and a short circuit grounding static contact are arranged on the base and are respectively arranged on two sides of the disconnecting link connecting static contact, the protection static contact is used for connecting and protecting a secondary current loop, and the disconnecting link connecting static contact is used for connecting a short circuit grounding loop;
the bidirectional switching disconnecting link is hinged with the disconnecting link connecting static contact and can rotate towards two sides of the bidirectional switching disconnecting link, so that the disconnecting link connecting static contact is electrically connected with the protection static contact or the short circuit grounding static contact respectively;
the bidirectional switching disconnecting link is provided with a switching operation handle, the base is provided with an interlocking lock catch, and the interlocking lock catch is used for locking the switching operation handle when the bidirectional switching disconnecting link is switched on with the protection static contact or the short circuit grounding static contact.
Optionally, the short circuit grounding fixed contact is connected with a short circuit grounding bolt arranged below the base, and the short circuit grounding bolt is used for connecting the short circuit grounding loop;
the disconnecting link connecting static contact is connected with a secondary circuit wiring bolt arranged below the base, and the secondary circuit wiring bolt is used for connecting a secondary circuit of the current transformer;
the protection static contact is connected with a protection secondary circuit wiring bolt arranged below the base, and the protection secondary circuit wiring bolt is used for connecting the protection secondary current circuit.
Optionally, the interlocking hasp include pin thread and female lock locking plate, wherein:
the male buckle is arranged on the switching operation handle;
the female lock locking plate is of a stamping and bending integrated butterfly-shaped structure, a groove and a buckling groove for connecting a transmission shaft hole and installing a torsion spring and an insulating wrench strip inclined by 120 degrees to the female lock locking plate are formed in the female lock locking plate, a connecting shaft, the torsion spring and a U-shaped base are arranged on the base, the base can move left and right through elastic bending of the torsion spring, the bidirectional switching knife switch is switched to be in contact with and closed by a protection static contact or a short circuit grounding static contact, the operating handle drives the male buckle to be pressed downwards to the insulating wrench strip, the torsion spring is guided to push and press the female lock locking plate to one side through 120 degrees, the male buckle is arranged on the female lock locking plate, and when the switching operating handle is operated in place, the female lock locking plate rebounds under the action of the torsion spring to press the male buckle, and locking of the.
Optionally, two small wing parts of the lower end of the female lock locking plate are bent to form the groove, the groove is matched with the U-shaped base to form a shaft hole capable of being driven, the groove is matched with the shaft to form an interlocking mechanism capable of elastically returning back in a reciprocating manner, the lower end of the large wing part at the upper end of the female lock locking plate forms a self-locking buckle, and the short part at the highest end of the female lock locking plate is bent to form a 120-degree angle to serve as a matching guide angle of the male buckle and is inlaid with an insulating guide strip.
Optionally, the male buckle is a half-head cylindrical structure integrally extending from the switching operation handle, and is abutted on the buckle end face of the female lock locking plate as a guide and a lock catch.
Optionally, the base is provided with a female lock locking plate fixing groove for installing the female lock locking plate, and the U-shaped base is embedded in and fixed to the male lock fixing groove on the base through a bolt.
Optionally, the short circuit grounding static contact and the protection static contact both include a copper sheet with a finger contact structure, the copper sheet is formed by punching and bending a single copper material, a reed in contact with the bidirectional switching knife switch is arranged in the middle of the upper portion of the copper sheet, the bottom of the copper sheet is connected with the base through an integrally formed bolt or an integrally formed welded bolt, two spring clips are clamped in the middle of the copper sheet, two ends of each spring clip respectively abut against the upper and lower surfaces of two outer sides of the reed, and two outer side surfaces of each spring clip abut against the inner side surfaces of two outer walls of the copper sheet;
and the protective static contact or the short circuit grounding static contact is embedded in the fixing groove of the base, so that the protective static contact or the short circuit grounding static contact cannot move forwards and backwards, and the spring clip is aligned with the reed.
Optionally, two flexible connecting wires are welded between the upper edge of the rotating point of the bidirectional switching disconnecting link and the left and right sides of the disconnecting link connecting fixed contact.
Optionally, the short circuit grounding bolt and the short circuit grounding fixed contact, the secondary circuit wiring bolt and the disconnecting link connecting fixed contact, and the protective secondary current circuit wiring bolt and the protective fixed contact are all integrally formed or directly welded bolts.
Optionally, the short circuit grounding bolts are connected with each other through a short circuit conducting strip.
Optionally, an arc housing is disposed on the base, wherein:
and a transverse electric isolation chamber and a longitudinal electric isolation chamber are arranged in the arc housing, and the arc housing is provided with a closing stop notch and a positioning edge matched with the notch of the base.
Optionally, a fixed contact fixing groove is formed in the base, and a bolt through hole is formed in the middle of the fixed contact fixing groove;
after the wiring bolt of the protective secondary current loop penetrates through the bolt hole of the protective static contact and the bolt through hole on the base from top to bottom, the wiring bolt is screwed and fixed on the back surface of the base through a nut;
the short circuit wiring bolt penetrates through a bolt hole for protecting a grounding static contact and a bolt through hole of the base from top to bottom and then is screwed and fixed on the reverse side of the base through a nut;
and the secondary circuit wiring bolt penetrates through the bolt hole of the disconnecting link connecting static contact and the bolt through hole of the base from top to bottom, and then is screwed and fixed on the back surface of the base through a nut.
According to the technical scheme, the application discloses a quick switching operation mechanism which comprises a base, a bidirectional switching disconnecting link and a disconnecting link connecting static contact arranged on the base, wherein the base is provided with a protection static contact and a short circuit grounding static contact which are respectively arranged on two sides of the disconnecting link connecting static contact, the protection static contact is used for connecting a protection secondary current loop, and the disconnecting link connecting static contact is used for connecting a short circuit grounding loop; the bidirectional switching disconnecting link is hinged with the disconnecting link connecting static contact and can rotate towards two sides of the bidirectional switching disconnecting link, so that the disconnecting link connecting static contact is electrically connected with the protecting static contact or the short circuit grounding static contact respectively; the bidirectional switching disconnecting link is provided with a switching operation handle, the base is provided with an interlocking lock catch, and the interlocking lock catch is used for locking the switching operation handle when the bidirectional switching disconnecting link is switched on with the protection static contact or the short circuit grounding static contact. The connection mode of the secondary circuit of the current transformer can be quickly switched through the bidirectional switching disconnecting link, the problem that the existing bolt type switching part is long in time when the connection of the secondary circuit is switched is solved, and therefore operation efficiency is improved.
Moreover, the problem of poor safety caused by short electrical distance of a traditional bolt structure is solved, the operation is convenient, the direction is clear, the speed is high, the circuit switching efficiency is effectively improved, and the safety is improved.
Through interlocking hasp structure, effectively realized the locking of two-way switching knife switch after closing a floodgate with the protection static contact of protection secondary current return circuit, avoided the mistake to bump the mistake and draw and lead to the protection maloperation, effectively promoted the security.
The female locking plate of the butterfly-shaped structure formed integrally by stamping and bending is convenient to manufacture, high in locking reliability and low in cost.
The grounding static contact and the protection static contact adopt a three-section finger touch structure enhanced by the double spring clips, so that the self-adaptive laminating and pressing of the two-side co-six-surface contact between the grounding static contact and the bidirectional switching disconnecting link can be effectively realized, and the effective electric connection contact is kept all the time.
The movable contact, the static contact and the bolt on the base are integrally formed or welded, the structure is firm, the wiring bolt is effectively prevented from being rotated and loosened, and electrical faults such as poor contact are avoided.
Two flexible wires are welded between the disconnecting link connecting static contacts above and below the rotating point of the bidirectional switching disconnecting link, so that the electrical conduction effect can be effectively improved, and the electrical conduction fault caused by poor contact due to long-term rotation of the middle rotating part is avoided.
The bolts of the short circuit grounding bolt are connected through the short circuit conducting strip, so that the problem that the grounding performance of individual bolts is reduced or grounding disconnection occurs can be effectively prevented, and the grounding conduction effect is improved.
The arc-shaped housing structure is adopted, so that the electrical isolation between the moving contact and the static contact in the housing can be effectively realized, and the short circuit of falling objects is avoided. Meanwhile, the circular arc and the metal part of the switching knife switch are fully shielded and isolated, and the metal part caused by switching is prevented from being touched by hands by mistake in the operation process.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic diagram of a fast switching operating mechanism according to an embodiment of the present application;
FIG. 2 is an enlarged view of part A of FIG. 1;
FIG. 3 is an enlarged view of portion B of FIG. 1;
FIG. 4 is a schematic view of a latch mechanism of the quick switch operating mechanism of the present application;
fig. 5 is a schematic structural diagram of an overall appearance of the fast switching operating mechanism according to the embodiment of the present application;
FIG. 6 is a schematic structural diagram of a base of a fast switching operating mechanism according to an embodiment of the present application;
fig. 7 is a schematic structural diagram of a housing of a fast switching operating mechanism according to an embodiment of the present application.
In the figure: 1-a base; 2-bidirectional switching knife switch; 3, connecting a disconnecting link with a static contact; 4-protecting the static contact; 5-grounding static contact; 6-protection of secondary current loop wiring bolt; 7-a secondary circuit wiring bolt of the current transformer; 8-short circuit earth bolts; 9-short-circuit conducting strips; 10-male buckle; 11-a female lock plate; 12-a female lock plate base; 13-a female lock locking plate fixing shaft; 14-female lock plate torsion spring; 15-a housing; 1101-a female lock locking tab slot; 1102-drive connection of a lock plate of a female lock; 1103-locking plate clamp spring fixing groove of the primary lock; 101-a female lock tab base securing slot; 102-fixed and fixed contact fixing grooves; 103-a housing locating notch; 104-an encloser nut bore; 201-switching operation handle; 202-a blade; 501-copper sheet; 502-size spring clip; 50101-contact spring; 1501-housing bolt holes.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Examples
The embodiment provides a fast switching operating mechanism, as shown in fig. 1, the fast switching operating mechanism specifically includes a base 1 and a bidirectional switching switch 2, a protection stationary contact 4 for connecting a protection secondary current loop, a short-circuit grounding stationary contact 5, and a switch connection stationary contact 3 for connecting a current transformer secondary loop are disposed on the base 1, the short-circuit grounding stationary contact 5 and the protection stationary contact 4 are respectively arranged on the left and right sides of the switch connection stationary contact 3, and the bidirectional switching switch 2 is connected with the switch connection stationary contact 3 and can rotate in two directions, i.e., left or right, to realize switching-on contact with the grounding stationary contacts 5 or the protection stationary contacts 4 on both sides.
The bidirectional switching knife-switch 2 is provided with a switching operation handle 201, the switching operation handle 201 and one side of the base 1, which is located at the protection static contact 4, are provided with an interlocking lock catch, and when the bidirectional switching knife-switch 2 is switched to be in contact with the protection static contact 4 or the short circuit grounding static contact 5 for closing, the interlocking lock catch locks the male buckle 10 of the switching operation handle 201, as shown in fig. 4.
In order to realize the reliability of wiring, the grounding static contact 5 is connected with a short circuit grounding bolt 8, the disconnecting link connecting static contact 3 is connected with a current transformer secondary circuit wiring bolt 7, and the protection static contact 4 is connected with a protection secondary current circuit wiring bolt 6. This application carries out each circuit connection through the binding bolt, and the reliability is high.
As shown in fig. 4, in order to realize the interlocking structure, the interlocking lock catch includes a male buckle 10 and a female lock plate 11, the female lock plate is arranged on a base 1, on which a female lock plate base 12 is arranged, and the interlocking lock catch includes a transmission connection of a shaft hole of the locking lock plate with the female lock plate base 12 and a transmission shaft 13 of a torsion spring 14 located in a locking lock plate groove, when the bidirectional switching knife-switch 2 is switched to be in contact with a protection stationary contact 4 for switching on or switched to be in contact with an opposite side grounding stationary contact 5) for switching on, the male buckle (10) located on the switching handle is in contact with an insulating guide part of the female lock plate, when the arc part of the male buckle 10 is pressed down, the female lock plate overcomes the pulling force side direction of the torsion spring to move and enter the female lock plate buckle, and the male buckle 10 is pressed down by the resilient.
In order to realize that the locking plate 11 moves laterally and enters the female locking plate buckle of the male buckle 10 when the male buckle 10 is pressed down, the insulating guide head of the female locking plate is bent into a 120-degree guide angle, the column head of the male buckle 10 is processed into an arc shape, when the arc column head of the male buckle 10 is pressed down to the insulating guide head of the female locking plate, pressure is decomposed into two component forces which are laterally and vertically downward, the lateral pressure causes the torsion spring 14 to bend laterally, the whole locking plate 11 displaces laterally, the male buckle 10 finally slides into the buckle hole of the female locking plate 11, the torsion spring rebounds to cause the female locking plate to press the male buckle 10, and the locking interlocking is effectively realized.
In order to prevent the bidirectional switch knife switch 2 from moving vertically downwards after interlocking, the switch housing realizes a stop position.
In order to fix the female lock plate 11 and the torsion spring 14, a female lock plate fixing groove 101 is formed in the base 1, and the horizontally fixing U-shaped plate 12 is inserted into the female lock plate fixing groove 101 and fixed by a shaft 13. Conveniently realize female lock locking plate 11's fixed, inlay female lock locking plate 11 in female lock locking plate fixed slot 101, realize that the side direction location is fixed.
In order to reduce the cost, the female lock plate 11 is of a stamping and bending integrated structure. The manufacture is convenient and the cost is low.
In order to realize reliable contact and compaction with the blade 202 of the bidirectional switching knife switch 2), as shown in fig. 2, the grounding static contact 5 comprises a copper sheet 501 of a finger contact structure, the copper sheet 501 is formed by stamping and bending a single copper material, a reed 50101 which is in closing contact with the bidirectional switching knife switch 2 is arranged in the middle of the upper part, a stud which is integrally welded and formed is arranged at the bottom of the copper sheet 501, two spring clamps 502 with different heights are clamped in the middle of the copper sheet 501, the upper ends of the two spring clamps 502 respectively abut against the two outer side surfaces of the reed 50101, and the two outer side surfaces of the two spring clamps 502 abut against the inner upper side surface and.
The protective static contact 4 and the grounding static contact 5 adopt the same structure; the bottom of the disconnecting link connecting static contact 3 is an integrally welded stud, so that the electrical conduction fault caused by poor contact due to bolt crimping can be effectively prevented, and the performance of a passage is improved. The two contact surfaces are divided into three contact surfaces by adopting a finger contact structure, so that each contact surface can be in good contact with the inserted blade 202 in a self-adaptive manner, meanwhile, in order to further increase the contact pressure, two spring clips 502 are clamped in the copper sheet 501, the multipoint compression elasticity of the reeds 50101 is effectively improved, and the contact surfaces are in contact compression with the blade 202 of the bidirectional switching knife switch 2 by adopting three surfaces on each side, so that the contact surfaces can be in effective contact all the time.
As shown in fig. 6, in order to realize the connection and fixation of the static contact and the bolt, a movable contact fixing groove 102 and a static contact fixing groove 102 are arranged on the base 1, a bolt through hole is arranged in the middle of the movable contact fixing groove 102 and the static contact fixing groove, and after the protective secondary current loop wiring bolt 6 penetrates through the bolt hole of the protective static contact 4 and the bolt through hole of the base 1 from top to bottom, the back surface of the base 1 is screwed and fixed by a nut; after the short circuit grounding bolt 8 passes through the bolt hole of the grounding static contact 5 and the bolt through hole of the base 1 from top to bottom, the back surface of the base 1 is screwed and fixed through a nut; a current transformer secondary circuit wiring bolt 7 penetrates through a bolt hole of the disconnecting link connecting static contact 3 and a bolt through hole of the base 1 from top to bottom, and then is screwed and fixed on the reverse side of the base) through a nut. The fixed connection of the fixed contact and the bolt on the base 1 is conveniently realized.
In order to prevent the electrical conduction fault caused by poor contact due to long-term rotation of the middle rotating component of the bidirectional switching disconnecting link 2, a left flexible soft-woven spiral conductor 203 and a right flexible soft-woven spiral conductor 203 are welded between two welding points 204 of the blade 202 and the movable contact base 3 of the bidirectional switching disconnecting link 2, as shown in fig. 3, so that the electrical conduction fault caused by poor contact due to long-term rotation of the middle rotating component can be effectively prevented, and the access performance is improved.
In order to improve the grounding conduction effect, the bolts of the short circuit grounding bolt 8 are connected through a short circuit conducting strip 9. The problems of the reduction of the grounding performance of individual wiring bolts or the occurrence of grounding disconnection are prevented, and the grounding conduction effect is improved.
In order to fully consider the electric shock hazard in the operation process of electrical insulation, an arc-shaped housing is adopted, as shown in fig. 5, so that the knife blade 202 at the exposed outer part cannot contact the finger part, meanwhile, a groove is arranged on the base 1 and is completely clamped in the groove with the outer edge of the arc-shaped housing to realize separation, and a phase electrical isolation chamber is arranged in the housing, as shown in fig. 7, the movable and fixed contacts are isolated from each other, so that the short circuit caused by loosening and dropping of the components is prevented.
The fast switching operation part is characterized in that a secondary circuit wiring bolt 7 of the current transformer is connected with a secondary current output by the current transformer, a protective secondary current circuit wiring bolt 6 is connected with a protective secondary current acquisition circuit, and a short circuit grounding bolt 8 is connected with a short circuit grounding circuit.
When the bidirectional switching knife switch 2 normally operates, the blade 202 of the bidirectional switching knife switch 2 is in contact with the protection static contact 4 connected with the protection secondary current loop, the secondary current of the current transformer is connected into the protection secondary current loop, and meanwhile, the interlocking lock catch locks the switching operation handle 201, so that the switching operation handle 201 cannot be pulled open due to mistaken collision and the like, and the open-circuit accident of the current secondary loop when the bidirectional switching knife switch 2 normally operates can be avoided; when primary equipment corresponding to the current transformer is maintained, the blade 202 of the bidirectional switching disconnecting link 2 is switched to the current secondary circuit short circuit grounding static contact 5, a secondary current circuit output by the current transformer is isolated from a protected secondary current circuit, and short circuit grounding is realized; the problem of the security that traditional bolt construction electrical spacing short leads to is poor is avoided, has the anticreep and detains the shutting function, safe and reliable, and water conservancy diversion and break-make ability are strong, the simple operation, and operating efficiency is high, and the switching operation is fast, has promoted circuit switching efficiency effectively, has improved the security.
In this example, the grounding static contact 5, the disconnecting link connecting static contact 3 and the protecting static contact 4 are distributed at equal intervals from left to right, the number of each static contact is 4, the static contacts are arranged at equal intervals in the longitudinal direction, and the number of bolts is the same as that of the static contacts; the copper sheets (501) of the moving contact and the static contact are made of beryllium bronze, and the spring clamp (502) is made of spring steel clamps.
The above fast switch operating mechanism is the specific embodiment of the present invention, which embodies the substantial features and the progress of the present invention, and can be modified according to the actual use requirement, the present invention teaches that the modification of the same aspect such as the shape and the structure is performed on the same, and the modification is all in the protection scope of the present solution.
According to the technical scheme, the application discloses a quick switching operation mechanism which comprises a base, a bidirectional switching disconnecting link and a disconnecting link connecting static contact arranged on the base, wherein the base is provided with a protection static contact and a short circuit grounding static contact which are respectively arranged on two sides of the disconnecting link connecting static contact, the protection static contact is used for connecting a protection secondary current loop, and the disconnecting link connecting static contact is used for connecting a short circuit grounding loop; the bidirectional switching disconnecting link is hinged with the disconnecting link connecting static contact and can rotate towards two sides of the bidirectional switching disconnecting link, so that the disconnecting link connecting static contact is electrically connected with the protecting static contact or the short circuit grounding static contact respectively; the bidirectional switching disconnecting link is provided with a switching operation handle, the base is provided with an interlocking lock catch, and the interlocking lock catch is used for locking the switching operation handle when the bidirectional switching disconnecting link is switched on with the protection static contact or the short circuit grounding static contact. The connection mode of the secondary circuit of the current transformer can be quickly switched through the bidirectional switching disconnecting link, the problem that the existing bolt type switching part is long in time when the connection of the secondary circuit is switched is solved, and therefore operation efficiency is improved.
Moreover, the problem of poor safety caused by short electrical distance of a traditional bolt structure is solved, the operation is convenient, the direction is clear, the speed is high, the circuit switching efficiency is effectively improved, and the safety is improved.
Through interlocking hasp structure, effectively realized the locking of two-way switching knife switch after closing a floodgate with the protection static contact of protection secondary current return circuit, avoided the mistake to bump the mistake and draw and lead to the protection maloperation, effectively promoted the security.
The female locking plate of the butterfly-shaped structure formed integrally by stamping and bending is convenient to manufacture, high in locking reliability and low in cost.
The grounding static contact and the protection static contact adopt a three-section finger touch structure enhanced by the double spring clips, so that the self-adaptive laminating and pressing of the two-side co-six-surface contact between the grounding static contact and the bidirectional switching disconnecting link can be effectively realized, and the effective electric connection contact is kept all the time.
The movable contact, the static contact and the bolt on the base are integrally formed or welded, the structure is firm, the wiring bolt is effectively prevented from being rotated and loosened, and electrical faults such as poor contact are avoided.
Two flexible wires are welded between the disconnecting link connecting static contacts above and below the rotating point of the bidirectional switching disconnecting link, so that the electrical conduction effect can be effectively improved, and the electrical conduction fault caused by poor contact due to long-term rotation of the middle rotating part is avoided.
The bolts of the short circuit grounding bolt are connected through the short circuit conducting strip, so that the problem that the grounding performance of individual bolts is reduced or grounding disconnection occurs can be effectively prevented, and the grounding conduction effect is improved.
The arc-shaped housing structure is adopted, so that the electrical isolation between the moving contact and the static contact in the housing can be effectively realized, and the short circuit of falling objects is avoided. Meanwhile, the circular arc and the metal part of the switching knife switch are fully shielded and isolated, and the metal part caused by switching is prevented from being touched by hands by mistake in the operation process.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
While preferred embodiments of the present application have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the true scope of the embodiments of the application.
Finally, it should also be noted that, herein, 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 terminal 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 terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.
The technical solutions provided by the present application are introduced in detail, and specific examples are applied in the description to explain the principles and embodiments of the present application, and the descriptions of the above examples are only used to help understanding the method and the core ideas of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (12)
1. A quick switching operation mechanism is characterized by comprising a base, a bidirectional switching disconnecting link and a disconnecting link connecting static contact arranged on the base, wherein a protection static contact and a short circuit grounding static contact are arranged on two sides of the disconnecting link connecting static contact on the base in a separated manner, the protection static contact is used for connecting and protecting a secondary current loop, and the disconnecting link connecting static contact is used for connecting and connecting a short circuit grounding loop;
the bidirectional switching disconnecting link is hinged with the disconnecting link connecting static contact and can rotate towards two sides of the bidirectional switching disconnecting link, so that the disconnecting link connecting static contact is electrically connected with the protection static contact or the short circuit grounding static contact respectively;
the bidirectional switching disconnecting link is provided with a switching operation handle, the base is provided with an interlocking lock catch, and the interlocking lock catch is used for locking the switching operation handle when the bidirectional switching disconnecting link is switched on with the protection static contact or the short circuit grounding static contact.
2. The fast switching operating mechanism according to claim 1, wherein the short-circuit grounding stationary contact is connected to a short-circuit grounding bolt disposed below the base, the short-circuit grounding bolt being used for connecting the short-circuit grounding loop;
the disconnecting link connecting static contact is connected with a secondary circuit wiring bolt arranged below the base, and the secondary circuit wiring bolt is used for connecting a secondary circuit of the current transformer;
the protection static contact is connected with a protection secondary current loop wiring bolt arranged below the base, and the protection secondary current loop wiring bolt is used for connecting the protection secondary current loop.
3. The fast switch operating mechanism of claim 1, wherein said interlocking lock comprises a male lock and a female lock tab, wherein:
the male buckle is arranged on the switching operation handle;
the female lock locking plate is of a stamping and bending integrated butterfly-shaped structure, a groove and a buckling groove for connecting a transmission shaft hole and installing a torsion spring and an insulating wrench strip inclined by 120 degrees to the female lock locking plate are formed in the female lock locking plate, a connecting shaft, the torsion spring and a U-shaped base are arranged on the base, the base can move left and right through elastic bending of the torsion spring, the bidirectional switching knife switch is switched to be in contact with and closed by a protection static contact or a short circuit grounding static contact, the operating handle drives the male buckle to be pressed downwards to the insulating wrench strip, the torsion spring is guided to push and press the female lock locking plate to one side through 120 degrees, the male buckle is arranged on the female lock locking plate, and when the switching operating handle is operated in place, the female lock locking plate rebounds under the action of the torsion spring to press the male buckle, and locking of the.
4. The fast switching operating mechanism according to claim 3, wherein the two lower small-wing portions of the female lock plate are bent to form the groove, the groove and the U-shaped base are matched to form a shaft hole capable of being driven, the groove, the torsion spring and the shaft are matched to form an interlocking mechanism capable of elastically and reciprocally turning back, a self-locking buckle is formed at the lower end of the upper large-wing portion of the female lock plate, and the short portion of the highest end of the female lock plate is bent to form an angle of 120 degrees to serve as a guide angle for matching the male buckle and is embedded with an insulating guide strip.
5. The quick switch operating mechanism of claim 4 wherein said male locking element is a generally half-headed cylinder extending integrally from said switch operating handle for guiding and locking said male locking element against said locking surface of said female locking clip.
6. The fast switching operating mechanism of claim 4, wherein said base defines a female locking tab retaining slot for receiving said female locking tab, and said U-shaped base is received in and bolted to a male locking tab retaining slot defined in said base.
7. The fast switching operating mechanism according to claim 1, wherein the short circuit grounding stationary contact and the protection stationary contact each comprise a copper sheet with a finger contact structure, the copper sheet is formed by stamping and bending a single copper material, a spring plate in contact with the bidirectional switching knife switch is arranged in the middle of the upper portion of the copper sheet, the bottom of the copper sheet is connected with the base by an integrally formed bolt or an integrally formed welded bolt, two spring clips are clamped in the middle of the copper sheet, two ends of each spring clip respectively abut against the upper and lower surfaces of two outer sides of the spring plate, and two outer side surfaces of each spring clip abut against the inner side surfaces of two outer walls of the copper sheet;
and the protective static contact or the short circuit grounding static contact is embedded in the fixing groove of the base, so that the protective static contact or the short circuit grounding static contact cannot move forwards and backwards, and the spring clip is aligned with the reed.
8. The fast switching operating mechanism according to claim 2, wherein two flexible connecting wires are welded on left and right sides between the upper edge of the rotating point of the bidirectional switching knife switch and the knife switch connecting static contact.
9. The fast switching operating mechanism according to claim 8, wherein the short circuit grounding bolt and the short circuit grounding stationary contact, the secondary circuit wiring bolt and the disconnecting link connecting stationary contact, and the protection secondary current circuit wiring bolt and the protection stationary contact are integrally formed or directly welded bolts.
10. The fast switch operating mechanism of claim 9, wherein said shorting ground bolt is connected to said bolt by a shorting conductive tab.
11. The fast switch operating mechanism of claim 1, wherein an arc shaped enclosure is provided on said base, wherein:
and a transverse electric isolation chamber and a longitudinal electric isolation chamber are arranged in the arc housing, and the arc housing is provided with a closing stop notch and a positioning edge matched with the notch of the base.
12. The fast switching operating mechanism according to claim 2, wherein the base is provided with a fixed contact fixing groove, and a bolt through hole is formed in the middle of the fixed contact fixing groove;
after the wiring bolt of the protective secondary current loop penetrates through the bolt hole of the protective static contact and the bolt through hole on the base from top to bottom, the wiring bolt is screwed and fixed on the back surface of the base through a nut;
the short circuit grounding bolt penetrates through a bolt hole for protecting a grounding static contact and a bolt through hole of the base from top to bottom and then is screwed and fixed on the reverse side of the base through a nut;
and the secondary circuit wiring bolt penetrates through the bolt hole of the disconnecting link connecting static contact and the bolt through hole of the base from top to bottom, and then is screwed and fixed on the back surface of the base through a nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021822916.2U CN212695063U (en) | 2020-08-27 | 2020-08-27 | Fast switching operation mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021822916.2U CN212695063U (en) | 2020-08-27 | 2020-08-27 | Fast switching operation mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212695063U true CN212695063U (en) | 2021-03-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021822916.2U Active CN212695063U (en) | 2020-08-27 | 2020-08-27 | Fast switching operation mechanism |
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| Country | Link |
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| CN (1) | CN212695063U (en) |
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- 2020-08-27 CN CN202021822916.2U patent/CN212695063U/en active Active
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