CN218957660U - Protection device for overcurrent circuit control based on servo system - Google Patents
Protection device for overcurrent circuit control based on servo system Download PDFInfo
- Publication number
- CN218957660U CN218957660U CN202221957465.2U CN202221957465U CN218957660U CN 218957660 U CN218957660 U CN 218957660U CN 202221957465 U CN202221957465 U CN 202221957465U CN 218957660 U CN218957660 U CN 218957660U
- Authority
- CN
- China
- Prior art keywords
- fixed
- connecting rod
- metal core
- permanent magnet
- circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Electromagnets (AREA)
Abstract
The utility model is suitable for the technical field of circuit protection, and provides a protection device for overcurrent circuit control based on a servo system, wherein a coil is wound on the outer side of a metal core, the metal core generates magnetic force after the coil is electrified, the metal core and the opposite surface of a permanent magnet are attracted mutually, the permanent magnet can move downwards, a connecting rod tangent plane can touch a connecting block tangent plane to form a passage, when current is overloaded, the metal core directly adsorbs the permanent magnet, and the connecting rod tangent plane compresses a telescopic rod, a return spring II and the connecting block tangent plane can get rid of the connecting block when moving towards the outer side of a shell, so as to form an open circuit protection load; when the current is overloaded, the circuit is broken, the power supply can be cut off, the first restoring spring drives the permanent magnet to reset, so that the connecting rod tangent plane is driven to press the connecting block tangent plane, the second restoring spring contracts under the action of the load force to enable the connecting rod tangent plane to move downwards along the connecting block tangent plane, the initial state is restored, manual reset is avoided, and convenience is brought to use.
Description
Technical Field
The utility model belongs to the technical field of circuit protection, and particularly relates to a protection device for controlling overcurrent based on a servo system.
Background
An overcurrent circuit protection device is a protection mode in which the protection device is operated when a current exceeds a predetermined maximum value. When the current flowing through the protected element exceeds a preset certain value, the protection device is started, and the selectivity of the action is ensured by using a time limit, so that the circuit breaker trips or gives an alarm signal. The overcurrent circuit protection mainly includes two types of short-circuit protection and overload protection. The short-circuit protection is characterized by large setting current and instantaneous action. Electromagnetic current trips (or relays), fuses are commonly used as short-circuit protection elements. The overload protection is characterized by small setting current and inverse time limit action. Thermal relays, time-delay electromagnetic current relays are commonly used as overload protection elements. The servo system is an automatic control system which can make the state of the system reach or approach to a certain preset value by utilizing the action of a certain component, and can compare the required state with the actual state, and adjust the control component according to the difference of the required state and the actual state, and the existing servo system is electrically connected with a control module for controlling the servo system.
When the current exceeds a preset maximum value, the circuit protection device in the market can automatically break to protect the mechanical equipment, and after the overcurrent circuit is repaired, the mechanical equipment is required to recover the work, the protection device is required to be reset manually, and the use is very inconvenient.
Disclosure of Invention
The utility model provides a protection device for controlling overcurrent based on a servo system, which aims to solve the problems existing in the prior art.
The utility model is realized in such a way that the protection device for controlling the overcurrent circuit based on the servo system comprises an adjusting circuit and a protection switch;
the regulating circuit comprises a power supply, a main way switch, a shunt switch and a load, wherein the power supply is connected with the main way switch in series, the main way switch is connected with the protection switch in series, the shunt switch is connected with the load in series, and the shunt switch and the load are connected with the power supply and the main way switch in parallel;
the protection switch comprises a shell, the vertical setting of shell, the fixed base that is equipped with in shell inner wall bottom surface, the fixed block that is equipped with of base top surface, the fixed slot has been seted up to the fixed block top surface, fixed metal core that is equipped with in fixed slot inner wall bottom surface, the winding of metal core outside is equipped with the coil, the fixed dead lever that is equipped with of base top surface, the dead lever is located the fixed block outside, the dead lever is close to top surface department hinge and has the permanent magnet, the permanent magnet is close to the one end fixed connection fixed plate of dead lever, fixed plate bottom fixed connection connecting rod, the fixed block top surface is close to dead lever one end is equipped with the first return spring, the one end of first return spring with fixed block top surface fixed connection, the other end with permanent magnet bottom surface fixed connection, the fixed connector that is equipped with on the inner wall that the shell is close to bottom surface department, the connector is located the shell is kept away from one side of fixed block, the connector is close to connecting rod one side terminal surface is fixed and is equipped with the telescopic link, the telescopic link is fixed is equipped with the second return spring, the cover is equipped with the second return spring terminal surface with the other end, second return spring and connector with fixed connection piece.
Preferably, the shunt switch and the load are one load group, and the load group is provided with a plurality of load groups, and the plurality of load groups are connected in parallel.
Preferably, the coil is provided with a plurality of layers, and the plurality of layers of the coil are uniformly wound on the outer wall of the metal core.
Preferably, the coil is electrically connected with the connecting rod, and the connecting rod is electrically connected with the connecting block, the second return spring and the connector.
Preferably, one end of the power supply in the regulating circuit is grounded.
Preferably, the metal core is magnetically attracted to the opposite surface of the permanent magnet.
Preferably, the connecting surfaces of the connecting rod and the connecting block are all chamfer surfaces.
Compared with the prior art, the utility model has the beneficial effects that:
1. the coil is wound on the outer side of the metal core, after the coil is electrified, the metal core generates magnetic force, the metal core and the opposite surface of the permanent magnet are attracted to each other, the permanent magnet moves downwards, and the section of the connecting rod touches the section of the connecting block, so that a passage is formed; when the current is increased, the magnetic force of the metal core is increased, the permanent magnet further moves downwards, and the section of the connecting rod moves upwards along the section of the connecting block; when the current is overloaded, the permanent magnet is directly adsorbed by the metal core, and the connecting rod section can get rid of the connecting block section to form an open circuit protection load;
2. one end of the connector is fixedly provided with a telescopic rod, a second return spring and a connecting block, when the circuit is electrified, the metal core can generate magnetic force to adsorb the permanent magnet to move downwards, and the section of the connecting rod can touch the section of the connecting block to form a passage; when the current is overloaded, the permanent magnet is directly absorbed by the metal core, and the connecting rod tangent plane compresses the telescopic rod, the return spring II and the connecting block tangent plane to move towards the outer side of the shell and get rid of the connecting block, so that an open-circuit protection load is formed;
3. when the current is overloaded, the circuit is broken, the power supply can be cut off, the first restoring spring drives the permanent magnet to reset, so that the connecting rod tangent plane is driven to press the connecting block tangent plane, the second restoring spring contracts under the action of the load force to enable the connecting rod tangent plane to move downwards along the connecting block tangent plane, the initial state is restored, manual reset is avoided, and convenience is brought to use.
Drawings
FIG. 1 is a schematic diagram of the connection of a regulating circuit according to the present utility model;
FIG. 2 is a front cross-sectional view of the protection switch of the present utility model;
fig. 3 is an enlarged view at a in fig. 2.
In the figure: 1. an adjusting circuit; 11. a power supply; 12. a main way switch; 13. a shunt switch; 14. a load; 2. a protection switch; 21. a housing; 22. a base; 23. a fixed block; 231. a fixing groove; 24. a metal core; 241. a coil; 25. a fixed rod; 26. a permanent magnet; 261. a fixing plate; 262. a connecting rod; 27. a first return spring; 28. a connector; 281. a telescopic rod; 282. a second return spring; 283. and (5) connecting a block.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
Referring to fig. 1-3, the present utility model provides a technical solution: a protection device for overcurrent circuit control based on a servo system comprises an adjusting circuit 1 and a protection switch 2;
the regulating circuit 1 comprises a power supply 11, a main switch 12, a shunt switch 13 and a load 14, wherein the power supply 11 is connected with the main switch 12 in series, the main switch 12 is connected with the protection switch 2 in series, the shunt switch 13 is connected with the load 14 in series, and the shunt switch 13 and the load 14 are connected with the power supply 11 and the main switch 12 in parallel;
the protection switch 2 comprises a shell 21, the vertical setting of shell 21, the fixed base 22 that is equipped with in shell 21 inner wall bottom surface, the fixed block 23 that is equipped with in base 22 top surface, fixed slot 231 has been seted up to fixed block 23 top surface, fixed metal core 24 is equipped with in fixed slot 231 inner wall bottom surface, the winding of metal core 24 outside is equipped with coil 241, the fixed dead lever 25 that is equipped with in base 22 top surface, the dead lever 25 is located the fixed block 23 outside, dead lever 25 is close to top surface department hinge and has permanent magnet 26, the one end fixed connection fixed plate 261 that is close to dead lever 25 of permanent magnet 26, fixed plate 261 bottom fixed connection connecting rod 262, fixed block 23 top surface is close to dead lever 25 one end and is equipped with return spring one 27, return spring one end and fixed block 23 top surface fixed connection of one end and the other end and permanent magnet 26 bottom surface fixed connection, fixed connector 28 is equipped with on the inner wall that shell 21 is close to bottom surface department, connector 28 is located one side that the shell 21 is kept away from fixed block 23, connector 28 is equipped with telescopic link 281 near connecting rod 262 one side terminal surface fixed, telescopic link 283 is equipped with telescopic link, telescopic link 281 outside cover is equipped with return spring two, one end and connector 28 terminal fixed connection with connector 283.
In this embodiment, the coil 241 is wound on the outer side of the metal core 24, after the coil 241 is energized, the metal core 24 generates magnetic force, the opposite surfaces of the metal core 24 and the permanent magnet 26 attract each other, the permanent magnet 26 moves downward, and the tangential surface of the connecting rod 262 touches the tangential surface of the connecting block 283, so that a passage is formed; when the current increases, the magnetic force of the metal core 24 increases, the permanent magnet 26 moves further downward, and the connecting rod 262 moves upward along the connecting rod 283; when the current is overloaded, the permanent magnet 26 is directly absorbed by the metal core 24, and the section of the connecting rod 262 gets rid of the section of the connecting block 283 to form the breaking protection load 14; one end of the connector 28 is fixed with a telescopic rod 281, a second return spring 282 and a connecting block 283, when the circuit is electrified, the metal core 24 can generate magnetic force to adsorb the permanent magnet 26 to move downwards, and the section of the connecting rod 262 can touch the section of the connecting block 283 to form a passage; when the current is overloaded, the permanent magnet 26 is directly absorbed by the metal core 24, and the connecting rod 262 is pressed by the tangential surface of the telescopic rod 281, the second return spring 282 and the connecting block 283 are moved towards the outer side of the shell 21 and simultaneously get rid of the connecting block 283, so that the breaking protection load 14 is formed; when the current is overloaded, the circuit is broken, the power supply 11 is cut off, the first return spring 27 drives the permanent magnet 26 to reset, so as to drive the connecting rod 262 to press the section of the connecting block 283, and the second return spring 282 is contracted under the action of the load force to enable the section of the connecting rod 262 to move downwards along the section of the connecting block 283, so that the initial state is restored.
Further, the shunt switch 13 and the load 14 are one load group, and the load group is provided with a plurality of load groups, and the plurality of load groups are connected in parallel to each other.
In this embodiment, one load group is one machine.
Further, the coil 241 is provided with a plurality of layers, and the plurality of layers of the coil 241 are uniformly wound on the outer wall of the metal core 24.
In the present embodiment, the metal core 24 is provided in a cylindrical structure, the coil 241 is wound around the outer surface of the metal core 24 in a plurality of layers, so that an energized spiral column structure is formed between the metal core 24 and the coil 241, and when the current in the coil 241 increases, the magnetism of the energized spiral column increases, thereby adsorbing the permanent magnet 26 to move downward, and the connecting rod 262 moves upward to get rid of the connecting block 283, thereby forming the breaking protection load 14.
Further, the coil 241 is electrically connected to the connecting rod 262, and the connecting rod 262 is electrically connected to the connecting block 283, the second return spring 282 and the connector 28.
In the present embodiment, the coil 241 is electrically connected to the connecting rod 262, and the connecting rod 262 is electrically connected to the connecting rod 283, the second return spring 282 and the connector 28, so that a passage can be formed when the current is supplied.
Further, one end of the power supply 11 in the regulating circuit 1 is grounded.
In the present embodiment, the power supply 11 in the regulator circuit 1 is grounded at one end, and the circuit and the load 14 can be further protected.
Further, the metal core 24 attracts the magnetism of the opposite face of the permanent magnet 26.
In this embodiment, after the coil 241 is energized, the metal core 24 generates magnetic force, the opposite surfaces of the metal core 24 and the permanent magnet 26 attract each other, the permanent magnet 26 moves downward, when the current is overloaded, the magnetic force of the metal core 24 increases, and the permanent magnet 26 moves further downward so that the connecting rod 262 gets rid of the connecting block 283 to form the breaking protection load 14.
Further, the connection surfaces of the connecting rod 262 and the connecting block 283 are all chamfer surfaces.
In the present embodiment, the connection surfaces of the connecting rod 262 and the connection block 283 are all chamfer surfaces, so that the connecting rod 262 does not move up or down and the resistance is not reduced.
The working principle and the using flow of the utility model are as follows: after the utility model is installed, the coil 241 is wound on the outer side of the metal core 24, after the coil 241 is electrified, the metal core 24 can generate magnetic force, the opposite surfaces of the metal core 24 and the permanent magnet 26 are attracted to each other, the permanent magnet 26 can move downwards, and the tangential surface of the connecting rod 262 can touch the tangential surface of the connecting block 283, so that a passage is formed; when the current increases, the magnetic force of the metal core 24 increases, the permanent magnet 26 moves further downward, and the connecting rod 262 moves upward along the connecting rod 283; when the current is overloaded, the permanent magnet 26 is directly absorbed by the metal core 24, and the section of the connecting rod 262 gets rid of the section of the connecting block 283 to form the breaking protection load 14; one end of the connector 28 is fixed with a telescopic rod 281, a second return spring 282 and a connecting block 283, when the circuit is electrified, the metal core 24 can generate magnetic force to adsorb the permanent magnet 26 to move downwards, and the section of the connecting rod 262 can touch the section of the connecting block 283 to form a passage; when the current is overloaded, the permanent magnet 26 is directly absorbed by the metal core 24, and the connecting rod 262 is pressed by the tangential surface of the telescopic rod 281, the second return spring 282 and the connecting block 283 are moved towards the outer side of the shell 21 and simultaneously get rid of the connecting block 283, so that the breaking protection load 14 is formed; when the current is overloaded, the circuit is broken, the power supply 11 is cut off, the first return spring 27 drives the permanent magnet 26 to reset, so as to drive the connecting rod 262 to press the section of the connecting block 283, and the second return spring 282 is contracted under the action of the load force to enable the section of the connecting rod 262 to move downwards along the section of the connecting block 283, so that the initial state is restored.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (7)
1. The utility model provides a protection device for overcurrent circuit control based on servo uses which characterized in that: comprises an adjusting circuit (1) and a protection switch (2);
the regulating circuit (1) comprises a power supply (11), a main circuit switch (12), a shunt switch (13) and a load (14), wherein the power supply (11) is connected with the main circuit switch (12) in series, the main circuit switch (12) is connected with the protection switch (2) in series, the shunt switch (13) is connected with the load (14) in series, and the shunt switch (13) and the load (14) are connected with the power supply (11) and the main circuit switch (12) in parallel;
the protection switch (2) comprises a shell (21), the shell (21) is vertically arranged, a base (22) is fixedly arranged on the bottom surface of the inner wall of the shell (21), a fixed block (23) is fixedly arranged on the top surface of the base (22), a fixed groove (231) is formed in the top surface of the fixed block (23), a metal core (24) is fixedly arranged on the bottom surface of the inner wall of the fixed groove (231), a coil (241) is wound on the outer side of the metal core (24), a fixed rod (25) is fixedly arranged on the top surface of the base (22), the fixed rod (25) is positioned on the outer side of the fixed block (23), a permanent magnet (26) is hinged to the position, close to the top surface, of the fixed rod (25), one end, close to the fixed plate (261), of the fixed block (23) is fixedly connected with a connecting rod (262), one end, close to the top surface, of the fixed block (23), of the fixed rod is provided with a return spring (27), one end, the top surface of the fixed block (23), and the other end, close to the fixed rod (25) is fixedly connected with the top surface of the fixed block (23), and the bottom surface, is fixedly connected with the permanent magnet (28) on the inner wall (21), the connector (28) is located the shell (21) is kept away from one side of fixed block (23), connector (28) is close to connecting rod (262) one side terminal surface is fixed and is equipped with telescopic link (281), telescopic link (281) flexible end is fixed and is equipped with connecting block (283), telescopic link (281) outside cover is equipped with reply spring two (282), reply spring two (282) one end with connector (28) terminal surface fixed connection, the other end with connecting block (283) fixed connection.
2. A protection device for controlling an overcurrent circuit for a servo system according to claim 1, wherein: the shunt switch (13) and the load (14) are one load group, a plurality of load groups are arranged, and the plurality of load groups are connected in parallel.
3. A protection device for controlling an overcurrent circuit for a servo system according to claim 1, wherein: the coil (241) is provided with a plurality of layers, and the plurality of layers of the coil (241) are uniformly wound on the outer wall of the metal core (24).
4. A protection device for controlling an overcurrent circuit for a servo system according to claim 1, wherein: the coil (241) is electrically connected with the connecting rod (262), and the connecting rod (262) is electrically connected with the connecting block (283), the second return spring (282) and the connector (28).
5. A protection device for controlling an overcurrent circuit for a servo system according to claim 1, wherein: one end of the power supply (11) in the regulating circuit (1) is grounded.
6. A protection device for controlling an overcurrent circuit for a servo system according to claim 1, wherein: the metal core (24) is magnetically attracted to the opposing face of the permanent magnet (26).
7. A protection device for controlling an overcurrent circuit for a servo system according to claim 1, wherein: the connecting surfaces of the connecting rod (262) and the connecting block (283) are all chamfer surfaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221957465.2U CN218957660U (en) | 2022-07-27 | 2022-07-27 | Protection device for overcurrent circuit control based on servo system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221957465.2U CN218957660U (en) | 2022-07-27 | 2022-07-27 | Protection device for overcurrent circuit control based on servo system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218957660U true CN218957660U (en) | 2023-05-02 |
Family
ID=86134917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221957465.2U Active CN218957660U (en) | 2022-07-27 | 2022-07-27 | Protection device for overcurrent circuit control based on servo system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218957660U (en) |
-
2022
- 2022-07-27 CN CN202221957465.2U patent/CN218957660U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101620959B (en) | Rocker type fire preventing switch | |
| CN108061838B (en) | Electric leakage test method for ensuring normal electricity consumption of user | |
| CN218957660U (en) | Protection device for overcurrent circuit control based on servo system | |
| CN2599734Y (en) | Automatic cut-off for arc fault | |
| CN1252773C (en) | Circuit breaker with magnetic mechanism and current controller and short circuit lock | |
| CN212811238U (en) | 10kV distribution lines attaches protection device | |
| CN201927550U (en) | Reversing contactor | |
| CN212209357U (en) | AC contactor | |
| CN112020251A (en) | Circuit protection device easy to assemble | |
| CN220400499U (en) | Anti-interference alternating current contactor | |
| CN2330063Y (en) | Over-current breaker | |
| CN112700981B (en) | Backup brake separating device of switch cabinet and control method thereof | |
| CN219936974U (en) | Low-voltage shunt release | |
| CN220306173U (en) | Contactor | |
| CN110739184B (en) | Quick response relay | |
| CN216015259U (en) | Improved structure of outdoor pole-mounted circuit breaker operating mechanism | |
| CN201146163Y (en) | Minitype air switch based on current rapidly-switching function | |
| CN216353830U (en) | Driving mechanism and circuit breaker | |
| CN204614746U (en) | Mutual inductor unit | |
| CN214588642U (en) | Intelligent fusing relay | |
| CN211530231U (en) | Simple to operate's earth leakage protection plug | |
| CN214254279U (en) | Hybrid power alternating current-direct current contactor | |
| CN218733207U (en) | Electric leakage protection knapsack, circuit breaker and electric leakage protection system | |
| CN219778720U (en) | Switching device | |
| CN219696336U (en) | Electromagnetic anti-interference electric contactor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |