CN108962662B - A remote control circuit on-off switch - Google Patents

Abstract

The invention discloses a remote control circuit on-off switch, which comprises a bracket structure and an on-off structure. The bracket structure includes a bottom plate, a switch shrapnel, a guide plate and a control system. The two sets of switch shrapnel are arranged on the bottom plate, and the guide plate It is vertically arranged on the bottom plate, and the control system is arranged on the support structure; if the switch is disconnected, the limit pin of the limit relay on the limit plate blocks the switch knife. The switch needs to be closed, communicate with the control through the remote control, and control the switch knife to close. The drive motor runs, and the screw rotates to drive the drive nut to move downward, compressing the spring. When it is compressed to the limit position, the drive motor stops rotating. The control system controls the limit relay on the limit plate to move, and the limit pin is drawn out of the limit hole. The switch knife falls quickly under the action of the spring, and connects the two switch shrapnels, then the limit relay at the bottom of the limit plate acts, and the corresponding limit pin is inserted into the limit hole.

Description

A remote control circuit on-off switch

technical field

The invention relates to the field of transmission line switches, in particular to a remote-controlled transmission line on-off switch.

Background technique

In the field of power transmission, switchgear is generally divided into several types such as circuit breakers, isolating switches, and load switches. This is because due to different types of electrical equipment, the requirements for switches are also different. The requirements for fast closing to reduce the occurrence of arcs; circuit breakers are generally characterized by high insulation reliability, sufficient opening capacity, sufficient dynamic and thermal stability, fast action speed, and short arc extinguishing time. The high-voltage isolating switch is mostly used to isolate the voltage. After the isolating switch is disconnected, it can form a clearly visible disconnection point in the circuit, establish a reliable insulation gap, and ensure the safety of maintenance personnel; Turn on the isolating switch, and then turn on the circuit breaker. When tripping, first turn off the circuit breaker, and then turn off the isolating switch.

Load switches are generally used for low voltage, and switch blades and circuit breakers are commonly used, but the arc extinguishing ability is not strong, the arc extinguishing speed is not high, and the arc cannot be extinguished before the short-circuit current reaches the impact value. And there is no measure to protect the staff, a kind of closure block is needed now, and the response delay can protect the on-off switch of the staff.

The present invention is in order to solve the above-mentioned deficiency that prior art exists, and provides a kind of remote control type line on-off switch, as the limit pin of the limit relay on the limit plate blocks the switch blade when the switch is off. The switch needs to be closed, communicate with the control through the remote control, and control the switch knife to close. The drive motor runs, and the screw rotates to drive the drive nut to move downward, compressing the spring. When it is compressed to the limit position, the drive motor stops rotating. The control system controls the limit relay on the limit plate to move, and the limit pin is drawn out of the limit hole. The switch knife falls quickly under the action of the spring, and connects the two switch shrapnels, then the limit relay at the bottom of the limit plate acts, and the corresponding limit pin is inserted into the limit hole.

When the circuit needs to be disconnected, the control system receives the information from the remote control, controls the action of the drive motor, drives the screw to drive the drive nut upward, stretches the spring, and then the limit relay at the bottom of the limit plate acts, and the corresponding limit pin exits the limit hole, the switch knife goes up quickly under the action of the spring, leaves the two switch shrapnel, the circuit is disconnected, and there is a limit block on the guide plate, the buffer part at the bottom of the limit block buffers the up and down impact force of the switch knife, and then the limit The limit relay on the top of the board acts, the limit pin is inserted into the limit hole, and the limit switch knife moves.

The technical scheme that the present invention solves its technical problem to take is:

A remote-controlled line on-off switch, comprising a bracket structure and an on-off structure, the bracket structure includes a bottom plate, two sets of switch shrapnel, a guide plate, and a control system, the two sets of switch shrapnel are arranged on the bottom plate, and the guide plate is vertical It is set on the bottom plate, and the control system is set on the support structure;

The on-off structure includes a limiting device and a driving device, the limiting device includes a limiting plate, there are two limiting plates, and the two limiting plates are parallel, and the two parallel limiting plates Vertically arranged on the bottom plate, the upper and lower parts of the limiting plate are respectively provided with a set of limiting holes, each of which is provided with a limiting relay, and the limiting relay is provided with a limiting pin;

The drive device includes a drive motor, the drive motor is arranged on the support structure, the motor shaft end is provided with a lead screw, the lead screw is provided with a drive nut, the drive nut is provided with a spring at the lower edge, and a switch gate is provided at the lower end of the spring. Knife, the end of the switch knife is set in the guide plate.

The control system is arranged on the motor positioning board, the driving motor is arranged on the motor positioning board, and the driving motor is connected to the control system through wires.

The support structure also includes a limit block, the guide plate is two parallel plates, the limit block is arranged on the guide plate, the lower part of the limit block is provided with a buffer component, and the lower part of the limit block The plane is not higher than the lower plane of the screw rod.

The two groups of switch shrapnels are connected with corresponding wires.

The spring is coaxial with the lead screw.

The switch knife is arranged between the two limit plates. When the switch knife is combined on the two sets of switch shrapnel, the limit hole at the lower part of the limit plate is on the upper part of the switch knife, and the switch knife is separated from the two sets of switch shrapnel. , the upper limit hole on the limit plate is at the bottom of the switch knife.

The control system is respectively connected with two limit relays through wires.

The bottom plate, the limiting plate, the guide plate and the limiting block are all insulators.

The beneficial effects of the present invention are:

1. If the switch is off, the limit pin of the limit relay on the limit plate blocks the switch knife. The switch needs to be closed, communicate with the control through the remote control, and control the switch knife to close. The drive motor runs, and the screw rotates to drive the drive nut to move downward, compressing the spring. When it is compressed to the limit position, the drive motor stops rotating. The control system controls the limit relay on the limit plate to move, and the limit pin is drawn out of the limit hole. The switch knife falls quickly under the action of the spring, and connects the two switch shrapnels, then the limit relay at the bottom of the limit plate acts, and the corresponding limit pin is inserted into the limit hole.

When the circuit needs to be disconnected, the control system receives the information from the remote control, controls the action of the drive motor, drives the screw to drive the drive nut upward, stretches the spring, and then the limit relay at the bottom of the limit plate acts, and the corresponding limit pin exits the limit hole, the switch knife goes up quickly under the action of the spring, leaves the two switch shrapnel, the circuit is disconnected, and there is a limit block on the guide plate, the buffer part at the bottom of the limit block buffers the up and down impact force of the switch knife, and then the limit The limit relay on the top of the board acts, the limit pin is inserted into the limit hole, and the limit switch knife moves.

2. Only stepper motors and relays are used as the electric components inside the switch, which ensures the stability of the switch.

3. The insulating guide plate can make the switch knife move up and down smoothly, and there will be no situation that the switch knife cannot be closed when it moves.

Description of drawings

Fig. 1 is a stent structural view of the present invention;

Fig. 2 is a view of the on-off structure of the present invention.

In the figure: 1-bracket structure, 2-on-off structure, 11-bottom plate, 12-switch shrapnel, 13-wire, 14-guide plate, 15-limiting block, 16-motor positioning plate, 17-control system, 21 -limit plate, 22-limit relay, 23-limit pin, 24-limit hole, 25-drive motor, 26-leading screw, 27-drive nut, 28-spring, 29-switch knife.

Detailed ways

In order to better understand the present invention, the specific implementation manners of the present invention will be explained in detail below in conjunction with the accompanying drawings.

A remote control circuit on-off switch, comprising a support structure 1 and an on-off structure 2, the support structure 1 includes a bottom plate 11, a switch spring 12, a guide plate 14, and a control system 17, and the two sets of switch springs 12 are arranged on the bottom plate 11, the guide plate 14 is vertically arranged on the bottom plate 11, and the control system 17 is arranged on the support structure 1;

The on-off structure 2 includes a limiting device and a driving device, and the limiting device includes a limiting plate 21, and the two parallel limiting plates 21 are vertically arranged on the bottom plate 11, and the upper part of the limiting plate 21 and the The lower part is respectively provided with a set of limit holes 24, and each set of limit holes 24 is provided with a limit relay 22, and the limit relay 22 is provided with a limit pin 23; the limit plate 21 is parallel to the guide plate 14 , the height is lower than the guide plate 14, and the insulating guide plate 14 can make the switch knife 29 move up and down smoothly, and the situation that the switch knife 29 cannot be closed with the switch shrapnel 12 when the switch knife 29 moves will not occur.

Described driving device comprises driving motor 25, and described driving motor 25 is located on the support structure 1, and motor shaft end is provided with leading screw 26, and described leading screw 26 is provided with driving nut 27, and driving nut 27 lower edge is provided with spring. 28. A switch knife 29 is provided at the lower end of the spring 28, and the end of the switch knife 29 is set in the guide plate 14. The driving motor 25 generally adopts a small-sized stepping motor, which can accurately control the rotation angle, thereby ensuring the control of the compression and stretching of the spring 28 .

When the switch is disconnected, the limit pin 23 of the limit relay 22 on the limit plate 21 blocks the switch switch blade 29 . It is necessary to close the switch, communicate with the control system 17 through the remote controller, and control the switch switch blade 29 to close. The drive motor 25 runs, and the screw 26 rotates to drive the drive nut 27 to move downward, compressing the spring 28. When compressed to the limit position, the drive motor 25 stops rotating, and the control system 17 controls the action of the limit relay 22 on the top of the limit plate 21. The limit pin 23 is drawn out of the limit hole 24, the switch knife 29 falls rapidly under the action of the spring 28, and connects the two switch shrapnels 12, then the limit relay 22 at the bottom of the limit plate 21 acts, and the corresponding limit pin 23 is inserted into the limit. Bit hole 24.

When the circuit needs to be disconnected, the control system 17 receives the information from the remote controller, controls the drive motor 25 to act, and the drive screw 26 drives the drive nut 27 to go up, stretches the spring 28, and then the limit relay 22 at the bottom of the limit plate 21 acts, corresponding The limit pin 23 withdraws from the limit hole 24, the switch knife 29 moves upward quickly under the action of the spring 28, leaves the two switch shrapnel 12, the circuit is disconnected, and the guide plate 14 is provided with a limit block 15, the bottom of the limit block 15 The buffering parts buffer the upward impact force of the switch knife 29, then the limit relay 22 on the top of the limit plate 21 acts, the limit pin 23 inserts the limit hole 24, and the limit switch knife 29 moves.

The control system 17 is arranged on the motor positioning plate 16, the driving motor 25 is arranged on the motor positioning plate 16, and the driving motor 25 is connected to the control system 17 through wires.

The support structure 1 also includes a limit block 15, the guide plate 14 is two parallel plates, the limit block 15 is arranged on the guide plate 14, and the bottom of the limit block 15 is provided with a buffer component, The lower plane of the limiting block 15 is not higher than the lower plane of the screw rod 26 .

The two groups of switch elastic pieces 12 are connected with corresponding wires.

The spring 28 is coaxial with the lead screw 26 .

The switch knife 29 is arranged between the two limit plates 21. When the switch knife 29 is combined on the two sets of switch springs 12, the limit hole 24 at the bottom of the limit plate 21 is on the top of the switch knife 29, and the switch When the switch knife 29 leaves the two groups of switch spring pieces 12, the limit hole 24 on the upper part of the limit plate 21 is at the lower part of the switch knife 29.

The control system 17 is respectively connected with two limit relays 22 through wire connection. The control system 17 is provided with electric control elements such as a remote control receiver, a motor driver, and a control chip. The control system 17 can be installed on the motor positioning plate 16 in an electromagnetic shielding manner, which ensures that the system can work normally.

Only stepper motors and relays are used as the electric components inside the switch, which ensures the stability of the switch.

The bottom plate 11, the limiting plate 21, the guide plate 14, and the limiting block 15 are all insulators.

The above-mentioned embodiment is a preferred embodiment of the present invention, but the embodiment of the present invention is not limited by the above-mentioned embodiment, and any other changes, modifications, substitutions, combinations, Simplifications should be equivalent replacement methods, and all are included in the protection scope of the present invention.

Claims (7)

1. a kind of remote control type circuit on-off switch, characterized in that including supporting structure, on-off structure, the supporting structure includes Bottom plate, switch shrapnel, guide plate, control system, two groups of switch shrapnels are located on bottom plate, and guide plate is located at bottom plate vertically On, control system is located on supporting structure；

The on-off structure includes limiting device, driving device, and the limiting device includes limit plate, described two parallel limits Plate is located on bottom plate vertically, and the limit plate upper and lower part is respectively equipped with one group of limit hole, is all provided on every group of limit hole There is a limit relay, the limit relay is equipped with spacer pin；

The driving device includes driving motor, and the driving motor is located on supporting structure, and motor shaft end is equipped with lead screw, described Lead screw is equipped with driving nut, and driving nut lower edge is equipped with spring, and lower spring end is equipped with switchblade knife, the switchblade knife end It is located in guide plate；

Switchblade knife is located between two limit plates, and switchblade knife closes when on two groups of switch shrapnels, the limit plate lower part limit Position hole is on switchblade knife top, and when switchblade knife leaves two groups of switch shrapnels, the limit plate top limit hole is in breaker Knife lower part.

2. a kind of remote control type circuit on-off switch according to claim 1, characterized in that the control system is located at motor On positioning plate, driving motor is located on motor positioning plate, and driving motor connects control system by conducting wire.

3. according to a kind of remote control type circuit on-off switch described in claim 1, characterized in that the supporting structure further includes limit Block, the guide plate are two parallel plates, and the limited block is located on guide plate, and the limited block lower part is equipped with buffer part Part, the limited block lower plane are not higher than screw rod lower plane.

4. being switched according to a kind of remote control type circuit on-off described in claim 1, characterized in that two groups of switch shrapnels and corresponding Conducting wire connection.

5. according to a kind of remote control type circuit on-off switch described in claim 1, characterized in that the spring and lead screw are coaxial.

6. according to a kind of remote control type circuit on-off switch described in claim 1, characterized in that the control system passes through conducting wire and connects It connects and is connect respectively with two limit relays.

7. being switched according to a kind of remote control type circuit on-off described in claim 1 or 3 wherein one, characterized in that the bottom plate, limit Position plate, guide plate, limited block are insulator.