CN219372130U - Intelligent hard pressing plate device of transformer substation - Google Patents
Intelligent hard pressing plate device of transformer substation Download PDFInfo
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- CN219372130U CN219372130U CN202320601752.8U CN202320601752U CN219372130U CN 219372130 U CN219372130 U CN 219372130U CN 202320601752 U CN202320601752 U CN 202320601752U CN 219372130 U CN219372130 U CN 219372130U
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Abstract
An intelligent hard pressing plate device for a transformer substation comprises an insulating cover plate, a conductive contact piece, a rotary connecting piece, a pressing plate stator, a spring pressing shaft, a spring, a contact guide post, a screen cabinet panel, a nut, a coupler, a motor mounting piece and a stepping motor. The motor mounting piece is sleeved on the outer peripheral side of the output shaft of the stepping motor. The coupler is arranged at the upper end of the output shaft of the stepping motor. The screen cabinet panel is arranged between the motor mounting piece and the pressing plate stator. The spring pressing shaft is arranged at the upper end of the coupler, and the rotary connecting piece, the pressing plate stator and the spring are all arranged at the periphery side of the spring pressing shaft. The upper end face of the pressing plate stator is provided with a pair of through holes penetrating to the lower end face, and contact guide posts penetrate through the through holes. The rotary connecting piece is arranged at the upper end of the pressing plate stator. The lower end face of the conductive contact is provided with a pair of protruding contacts matched with the contact guide posts. The insulating cover plate is attached to the upper end face of the rotary connecting plate. The intelligent hard pressing plate device of the transformer substation drives the device by precisely controlling the rotation angle through a stepping motor, and the state switching of the input and the exit of the automatic control pressing plate is realized.
Description
Technical Field
The utility model relates to the technical field of transformer substation relay protection, in particular to an intelligent hard pressing plate device of a transformer substation.
Background
The hard pressing plate is a bridge and medium for connecting secondary equipment such as relay protection and a safety automatic device with an external secondary circuit, is a control and monitoring blind point of a control circuit, and is mainly finished manually in the operation mode change, equipment overhaul and defect elimination work of the system.
Because the number of the hard pressing plates in the field microcomputer protection screen cabinet is numerous, the layout is compact, inspection omission or misoperation easily occurs, and particularly for the protection device, once the operation state of the hard pressing plates is wrong and correction cannot be found timely, the protection malfunction or refusal operation is easily caused, so that serious power grid safety accidents are caused, and the safe and stable operation of the power grid is influenced.
Disclosure of Invention
Aiming at the defects, the intelligent hard pressing plate device for the transformer substation provided by the utility model adopts the stepping motor to precisely control the rotation angle to drive the device, so that the state switching of the input and the withdrawal of the automatic control pressing plate is realized, and meanwhile, the hard pressing plate structure also has the function of on-site operation.
In order to achieve the object of the present utility model, the following techniques are proposed:
an intelligent hard pressing plate device for a transformer substation comprises an insulating cover plate, a conductive contact piece, a rotary connecting piece, a pressing plate stator, a spring pressing shaft, a spring, a contact guide post, a screen cabinet panel, a coupler, a motor mounting piece and a stepping motor.
The motor mounting piece is sleeved on the outer peripheral side of the output shaft of the stepping motor;
the coupler is arranged at the upper end of the output shaft of the stepping motor and in the motor mounting piece;
the panel of the screen cabinet is arranged between the motor mounting piece and the pressing plate stator;
the spring pressing shaft is arranged at the upper end of the coupler, and the rotary connecting piece, the pressing plate stator and the spring are arranged at the periphery of the spring pressing shaft;
the upper end surface of the pressing plate stator is provided with a pair of through holes penetrating to the lower end surface, and a contact guide post is penetrated in the through holes;
the rotary connecting piece is arranged at the upper end of the pressing plate stator;
the conductive contact is embedded in the rotary connecting piece, and the lower end surface of the conductive contact is provided with a pair of convex contacts matched with the contact guide posts;
the insulating cover plate is attached to the upper end face of the rotary connecting plate.
Further, the motor mounting piece is a cylindrical cavity with an opening at the upper part, the spring pressing shaft is further arranged in the opening of the motor mounting piece in a penetrating mode, and a preset distance is reserved between the spring pressing shaft and the inner peripheral side of the opening.
Further, the intelligent hard pressing plate device of the transformer substation further comprises a nut, threads are formed on the outer peripheral side of the lower portion of the contact guide post, and the contact guide post further penetrates through the upper end face of the motor mounting piece and is fixed through the nut arranged on the inner top wall of the motor mounting piece.
Further, two bayonet bosses are arranged on the outer periphery of the spring pressing shaft, the rotary connecting piece is arranged on the bayonet bosses on the upper portion of the spring pressing shaft, and the spring is arranged on the bayonet bosses on the lower portion of the spring pressing shaft.
Further, four end face ratchets are circumferentially arranged on the upper end face of the pressing plate stator, and four end face pawls meshed with the end face ratchets are circumferentially arranged on the lower end face of the rotary connecting piece.
Further, an embedded groove is formed in the rotary connecting piece, and the conductive contact piece is embedded in the embedded groove of the rotary connecting piece.
The beneficial effects of this technical scheme lie in:
1. the device is driven by precisely controlling the rotation angle through the stepping motor, the switching of the input state and the withdrawal state of the pressing plate can be controlled from the far end, and meanwhile, the hard pressing plate structure has the field manual operation function.
2. The device can be applied to the automatic control and upgrading of the pressing plate of the microcomputer protection secondary circuit of a new station or a reconstruction station of the power system, and has wide application scenes and market potential.
Drawings
Fig. 1 shows a front view and a half cross-sectional view of an embodiment of the present application.
Fig. 2 is a schematic diagram illustrating the opening and closing actions and states of the embodiment of the present application.
The marks in the figure: the device comprises an insulating cover plate-1, a conductive contact plate-2, a rotary connecting plate-3, a pressing plate stator-4, a spring pressing shaft-5, a spring-6, a contact guide post-7, a screen cabinet panel-8, a nut-9, a coupler-10, a motor mounting piece-11 and a stepping motor-12.
Detailed Description
The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other.
The intelligent hard pressing plate device for the transformer substation, shown in fig. 1-2, comprises an insulating cover plate 1, a conductive contact piece 2, a rotary connecting piece 3, a pressing plate stator 4, a spring pressing shaft 5, a spring 6, a contact guide post 7, a screen cabinet panel 8, a nut 9, a coupler 10, a motor mounting piece 11 and a stepping motor 12. Specifically, the number of the contact guide posts 7 is two, and in the present embodiment, the number of the nuts 9 is two, and two in each group.
The insulating cover plate 1 is in the shape of an insulating plastic sheet and is attached to the upper end face of the rotary connecting plate 3, the insulating cover plate 1 is a visible part of the hard pressing plate in front view, and the conductive loop inside the hard pressing plate is sealed and insulated in the final assembly link, so that manual operation of the hard pressing plate on the manual site is facilitated.
In particular, the insulating cover sheet 1 can be produced in different colors during the injection molding production stage to identify different functional press plates, such as a red insulating cover sheet 1 for trip press plates, a yellow insulating cover sheet 1 for protection functional press plates, and a gray insulating cover sheet 1 for standby press plates.
The conductive contact piece 2 is in a sheet shape, the lower end face is provided with a pair of protruding contacts matched with the contact guide posts 7, the conductive contact piece 2 inlaid in the rotary connecting piece 3 is a key part for conducting or disconnecting a secondary circuit, and the contacts at two ends of the conductive contact piece 2 are exposed and slightly higher than the surface of the rotary connecting piece 3, and in the embodiment, the height is 1mm.
Specifically, the conductive contact 2 is made of brass, integrally formed, and the rounded corners of the protruding contacts at the two ends are processed in an arc surface manner.
The rotary connecting piece 3 is arranged at the upper end of the pressing plate stator 4, the rotary connecting piece 3 is square, plastic materials are adopted, embedded grooves are formed in the rotary connecting piece 3, the rotary connecting piece 3 is a part for bearing the conductive contact piece 2, and the rotary connecting piece can rotate circumferentially by taking the axis of the spring pressing shaft 5 as the center at the projection point of the rotary connecting piece 3 under the driving of the spring pressing shaft 5.
Specifically, the upper end surface of the rotary connecting piece 3 is grooved and embedded according to the size of the conductive contact piece 2 in the injection molding stage, so that the conductive contact piece 2 can be completely embedded in the rotary connecting piece 3.
Specifically, the center position of the rotary connecting piece 3 is uniformly provided with four end-face pawl structures along the circumference, the single-direction rotation is realized by matching with the structure of the pressing plate stator 4, the axial displacement is carried out while the rotation is carried out, and the whole motion period is controlled to be 90 degrees, namely, after the full-circle rotation is completed, the circulation of combining position, separating position, combining position, separating position and combining position is realized.
Specifically, the periphery of the end face pawl structure is provided with a circular ring sealing structure, so that the high concentricity of rotation of the end face pawl structure can be ensured, and lubricating grease, such as lubricating grease, in the end face pawl can be sealed.
The insulating cover 1 can be used for sealing the conductive contact 2 in the rotary connecting piece 3 in a bayonet mode or a hot melting mode.
The clamp plate stator 4 is square both ends open the through-hole, middle grooved plastic material, and clamp plate stator 4 is as clamp plate position fixing spare, and the structure that its provided satisfies rotatory link 3 and carries out axial reciprocal fine motion when rotatory above that, is favorable to the contact to release when reducing friction.
Specifically, the center position of the upper end surface of the pressing plate stator 4 is uniformly distributed with four end surface ratchets respectively meshed with four end surface pawls along the circumference, and when the rotary connecting piece 3 performs rotary motion, locking catches at the periodic position of 90 degrees are provided, so that the rotary motion is prevented, and a deflection supporting point for axial reciprocating micro motion is provided.
Specifically, the concave circular ring sealing groove on the periphery of the end face ratchet structure of the pressing plate stator 4 is matched with the convex circular ring of the rotary connecting piece 3 to form end face ratchet and end face pawl sealing, so that internal grease lubrication can be protected, and external impurities are prevented from entering.
The spring pressing shaft 5 is arranged at the upper end of the coupler 10, a preset interval is reserved between the spring pressing shaft 5 and the inner peripheral side of the opening, the outer peripheral side of the spring pressing shaft 5 comprises a base and two bayonet bosses, the rotary connecting piece 3, the pressing plate stator 4 and the spring 6 are all arranged at the outer peripheral side of the spring pressing shaft 5, the rotary connecting piece 3 is arranged on the bayonet boss at the upper part of the spring pressing shaft 5, and the spring 6 is arranged on the bayonet boss at the lower part of the spring pressing shaft 5.
The spring pressing shaft 5 is a middle part for torque transmission of the stepping motor 12, drives the rotary connecting piece 3 and the conductive contact piece 2 to rotate around the axis of the rotary connecting piece and perform accurate angular displacement, and in addition, the spring pressing shaft 5 and the pressing plate stator 4 form a constraint space to compress the spring 6, so that the rotary connecting piece 3 always generates axial force, and the direction is from the rotary connecting piece 3 to the pressing plate stator 4.
Specifically, the outer diameter of the base of the spring pressing shaft 5 is matched with the size of the opening of the pressing plate stator 4 and is slightly larger than the outer diameter of the spring 6, in the embodiment, the outer diameter of the bayonet boss at the lower part of the spring pressing shaft 5 is 3mm larger than the inner diameter of the spring 6, and in the embodiment, the outer diameter of the bayonet boss is 3mm smaller, so that the spring 6 with a proper specification is restrained.
Specifically, the bayonet boss at the upper part of the spring pressing shaft 5 penetrates through the rotary connecting piece 3 and then rotates 90 degrees, and the two bayonet bosses are embedded into the embedding position of the rotary connecting piece 3 to form connection and fixation.
The spring 6 is a standard compression spring made of stainless steel or spring steel, is a key part for enabling the contact point to have pressure contact, and can ensure smooth conduction of the secondary circuit when the hard pressing plate is in the closing position.
Specifically, parameters such as the material, the wire diameter, the coil pitch, the free length, the inner diameter and the outer diameter of the spring 6 need to be matched with the torque of the stepping motor 12 and the reserved space structure of the pressing plate for selection.
In particular, the spiral end of the spring 6 preferably uses a flat bottom structure.
The spring pressing shaft 5 is used for compressing the spring 6 and then is fixed in the pressing plate stator 4, the spring 6 is restored to the free length, the downward pressure on the axial direction of the spring pressing shaft 5 is generated, and the spring pressing shaft 5 and the rotary connecting piece 3 are locked into a whole, so that the pressure is conducted to the rotary connecting piece 3, and the contact pressure of the contact is enhanced.
The contact guide posts 7 are arranged in the through holes in a penetrating way, threads are formed on the outer peripheral side of the lower part of the contact guide posts 7, and the contact guide posts 7 at the two ends of the pressing plate stator 4 fix the pressing plate stator 4.
Specifically, the contact guide post 7 is a metal columnar rotator, is an on-off endpoint of a secondary circuit, one end of the contact guide post 7 is connected with the conductive contact piece 2 to control the on-off of the circuit, and the other end of the contact guide post is connected with a cable wire.
Specifically, the contact guide post 7 is made of brass, one end of the contact guide post is made of a mushroom head with a round angle for arc surface processing, and the assembled arc surface is slightly higher than the surface of the pressing plate stator 4, in the embodiment, the height is 1mm, the other end of the contact guide post can be of a thread structure, and a nut 9 is used for pressing a copper nose fixing wire.
The screen panel 8 is provided between the motor mount 11 and the platen stator 4.
Specifically, the screen cabinet panel 8 belongs to a field microcomputer protection cabinet part, and the whole structure of the hard pressing plate is attached to the screen cabinet panel.
Specifically, if the wall thickness of the screen cabinet panel 8 is lower than 1.0mm, the addition of a hard pressing plate reinforcing beam in the cabinet body can be considered, so that the adhesive force of the hard pressing plate to the screen cabinet panel 8 is reduced.
The nut 9 is a standard component, and can fasten the pressing plate stator 4 on the screen panel 8 and fix the copper nose to form a passage.
The coupling 10 is provided at the upper end of the output shaft of the stepping motor 12, and the coupling 10 is provided in the motor mount 11.
Specifically, the coupling 10 is a cylindrical body with a through middle part and is used for transmitting torque, connecting a driving shaft and a driven shaft in different mechanisms to rotate together, transmitting motion and torque, one end of the coupling is connected with the spring pressing shaft 5, the other end of the coupling is connected with the stepping motor 12, and the coupling 10 is independently detached and used so as to facilitate the field installation and debugging of the hard pressing plate.
The motor mounting piece 11 is a cylindrical cavity with an upper opening, the spring pressing shaft 5 penetrates through the opening of the motor mounting piece 11, the motor mounting piece 11 is sleeved on the outer peripheral side of the output shaft of the stepping motor 12, the contact guide post 7 penetrates through the upper end face of the motor mounting piece 11 and is fixed through the nut 9 arranged on the inner top wall of the motor mounting piece 11.
The stepping motor 12 is a power output device, converts an electric control pulse signal into angular displacement of the motor, and precisely controls the spring pressing shaft 5 and the rotation angle of the rotary connecting piece 3 connected with the spring pressing shaft.
The nut 9, the contact guide post 7 and the motor mounting piece 11 are together used for mounting all components on the screen cabinet panel 8, and the coupler 10 is used for synchronously transmitting the angular displacement of the stepping motor 12 to the spring pressing shaft 5 so as to drive the rotary connecting piece 3 and the conductive contact piece 2 therein.
The working mode is as follows:
as shown in fig. 2, the conductive contact piece 2, the rotary connecting piece 3, the pressing plate stator 4 and the contact guide post 7 are included in the drawing. The conductive contact piece 2 is embedded in the rotary connecting piece 3, which can be regarded as a rotary whole, and the contact guide post 7 penetrates through the pressing plate stator 4 and fixes the pressing plate stator, which can be regarded as a fixed whole.
When in operation, the method is circulated according to the following sequence of the state I, the state II, the state III and the state IV.
I state: the a contact of the conductive contact piece 2 is connected with the A contact of the contact guide post 7, the B contact of the conductive contact piece 2 is connected with the B contact of the contact guide post 7, and the secondary circuit is in a conducting state;
and II, state: in order to rotate the connecting piece 3 by 90 degrees anticlockwise in the state I, the a contact of the conductive contact piece 2 is separated from the A contact of the contact guide post 7, the B contact of the conductive contact piece 2 is separated from the B contact of the contact guide post 7, and the secondary circuit is in an open state;
III state: in order to rotate the connecting piece 3 anticlockwise by 90 degrees in the II state, the a contact of the conductive contact piece 2 is connected with the B contact of the contact guide post 7, the B contact of the conductive contact piece 2 is connected with the A contact of the contact guide post 7, and the secondary circuit is in a conducting state;
and IV, state: in order to rotate the connecting piece 3 by 90 degrees anticlockwise in the III state, the a contact of the conductive contact piece 2 is separated from the B contact of the contact guide post 7, the B contact of the conductive contact piece 2 is separated from the A contact of the contact guide post 7, and the secondary circuit is in an off state;
and in the IV state, the mechanism rotates 90 degrees anticlockwise, the whole mechanism is restored to the I state, and the next cycle period is entered.
The above are only some of the examples listed in this application and are not intended to limit this application.
Claims (6)
1. The intelligent hard pressing plate device for the transformer substation is characterized by comprising an insulating cover plate (1), a conductive contact piece (2), a rotary connecting piece (3), a pressing plate stator (4), a spring pressing shaft (5), a spring (6), a contact guide post (7), a screen cabinet panel (8), a coupler (10), a motor mounting piece (11) and a stepping motor (12);
the motor mounting piece (11) is sleeved on the outer peripheral side of the output shaft of the stepping motor (12);
the coupler (10) is arranged at the upper end of the output shaft of the stepping motor (12), and the coupler (10) is arranged in the motor mounting piece (11);
the screen cabinet panel (8) is arranged between the motor mounting piece (11) and the pressing plate stator (4);
the spring pressing shaft (5) is arranged at the upper end of the coupler (10), and the rotary connecting piece (3), the pressing plate stator (4) and the spring (6) are arranged at the periphery side of the spring pressing shaft (5);
the upper end surface of the pressing plate stator (4) is provided with a pair of through holes penetrating to the lower end surface, and a contact guide post (7) is penetrated in the through holes;
the rotary connecting piece (3) is arranged at the upper end of the pressing plate stator (4);
the conductive contact piece (2) is embedded in the rotary connecting piece (3), and a pair of protruding contacts matched with the contact guide posts (7) are arranged on the lower end surface of the conductive contact piece (2);
the insulating cover plate (1) is attached to the upper end face of the rotary connecting plate (3).
2. The intelligent hard pressing plate device for the transformer substation according to claim 1, wherein the motor mounting piece (11) is a cylindrical cavity with an upper opening, the spring pressing shaft (5) is further arranged in the opening of the motor mounting piece (11) in a penetrating mode, and a preset distance is reserved between the spring pressing shaft (5) and the inner peripheral side of the opening.
3. The intelligent hard pressing plate device for the transformer substation according to claim 1, further comprising a nut (9), wherein threads are formed on the outer peripheral side of the lower part of the contact guide post (7), and the contact guide post (7) further penetrates through the upper end face of the motor mounting piece (11) and is fixed through the nut (9) arranged on the inner top wall of the motor mounting piece (11).
4. The intelligent hard pressing plate device for the transformer substation according to claim 1, wherein two bayonet bosses are arranged on the outer periphery side of the spring pressing shaft (5), the rotary connecting piece (3) is arranged on the bayonet boss on the upper portion of the spring pressing shaft (5), and the spring (6) is arranged on the bayonet boss on the lower portion of the spring pressing shaft (5).
5. The intelligent hard pressing plate device for the transformer substation according to claim 1, wherein four end face ratchets are circumferentially arranged on the upper end face of the pressing plate stator (4), and four end face pawls meshed with the end face ratchets are circumferentially arranged on the lower end face of the rotating connecting piece (3).
6. The intelligent hard pressing plate device for the transformer substation according to claim 1, wherein an embedded groove is formed in the rotary connecting piece (3), and the conductive contact piece (2) is embedded in the embedded groove of the rotary connecting piece (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320601752.8U CN219372130U (en) | 2023-03-24 | 2023-03-24 | Intelligent hard pressing plate device of transformer substation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320601752.8U CN219372130U (en) | 2023-03-24 | 2023-03-24 | Intelligent hard pressing plate device of transformer substation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219372130U true CN219372130U (en) | 2023-07-18 |
Family
ID=87117536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320601752.8U Active CN219372130U (en) | 2023-03-24 | 2023-03-24 | Intelligent hard pressing plate device of transformer substation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219372130U (en) |
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2023
- 2023-03-24 CN CN202320601752.8U patent/CN219372130U/en active Active
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