CN219497700U - Overload protection device for low-voltage circuit breaker - Google Patents
Overload protection device for low-voltage circuit breaker Download PDFInfo
- Publication number
- CN219497700U CN219497700U CN202320999508.1U CN202320999508U CN219497700U CN 219497700 U CN219497700 U CN 219497700U CN 202320999508 U CN202320999508 U CN 202320999508U CN 219497700 U CN219497700 U CN 219497700U
- Authority
- CN
- China
- Prior art keywords
- shell
- overload protection
- circuit breaker
- protection device
- voltage 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
- 230000007246 mechanism Effects 0.000 claims abstract description 25
- 230000033001 locomotion Effects 0.000 claims abstract description 8
- 238000012544 monitoring process Methods 0.000 claims abstract description 4
- 210000001503 joint Anatomy 0.000 claims description 13
- 238000000926 separation method Methods 0.000 claims description 4
- 238000003032 molecular docking Methods 0.000 abstract description 11
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
Landscapes
- Breakers (AREA)
Abstract
The utility model relates to the technical field of power transmission and distribution, in particular to an overload protection device of a low-voltage circuit breaker, which comprises a shell, an ammeter arranged in the shell and used for monitoring the current value of a circuit, and further comprises: the swinging arm is fixedly arranged coaxially with the pointer of the ammeter, and is connected with a traversing structure arranged in the shell, and the traversing structure deflects to trigger the pointer of the ammeter and can do linear motion in the shell; the connector lug activity is equipped with two on the casing, with circuit connection, and two the connector lug respectively is connected with a set of locating docking mechanism in the casing, docking mechanism with sideslip structure cooperation, finally, realizes effectual overload protection function, through the initial state of adjustment sideslip structure, can change the required current value of circuit automatic cutout to, the device can be applied to different grade type's circuit, and the practicality is high, is suitable for popularization and use.
Description
Technical Field
The utility model relates to the technical field of power transmission and distribution, in particular to an overload protection device of a low-voltage circuit breaker.
Background
Overload of the circuit can lead to short circuits and burn out a series of serious consequences for the appliance. Overload is overload and exceeds the rated load of equipment, the generated phenomenon is that current is excessive, electric equipment generates heat, and long-term overload of a circuit can reduce the insulation level of the circuit and even burn the equipment or the circuit. In this regard, the low-voltage circuit breaker is a switching device capable of switching on and off not only a normal load current and an overload current but also a short-circuit current.
At present, the conventional overload protection device generally only sets a maximum load current limit value, and when the load current of the transformer is larger than the maximum load current limit value, the circuit is cut off for protection, and in actual use, the overload protection device has certain limitation when applied to different types of circuits, so that the ideal practical effect is difficult to achieve.
Disclosure of Invention
The utility model aims to provide an overload protection device for a low-voltage circuit breaker, which aims to solve the problems in the background technology.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
the utility model provides a low voltage circuit breaker overload protection device, includes the casing and locates be used for monitoring the ampere meter of circuit current value in the casing, still include:
the swinging arm is fixedly arranged coaxially with the pointer of the ammeter, and is connected with a traversing structure arranged in the shell, and the traversing structure deflects to trigger the pointer of the ammeter and can do linear motion in the shell;
the connector lug activity is equipped with two on the casing, with circuit connection, and two the connector lug is connected with a set of locating respectively docking mechanism in the casing, docking mechanism with sideslip structure cooperation, works as the pointer of ampere meter takes place to deflect, and can impel sideslip structure with docking mechanism cooperates the time, docking mechanism triggers, makes two the connector lug carries out the separation action.
As a further scheme of the utility model: the transverse moving structure comprises two transverse rods fixedly arranged in the shell, transverse moving plates slidably arranged on the two transverse rods and a sliding block slidably arranged on the swing arm;
the sliding block is rotationally connected with the transverse moving plate, and a driving piece matched with the abutting mechanism is movably arranged on the transverse moving plate.
As still further aspects of the utility model: the driving piece comprises a pipe fitting rotatably arranged on the transverse moving plate, a driving pipe in sliding sleeve joint with the pipe fitting, and a pulley rotatably arranged on the outer wall of the driving pipe, and the pipe fitting is connected with an adjusting assembly;
the outer wall of the pipe fitting and the inner wall of the driving pipe are provided with mutually meshed threads, the outer wall of the driving pipe is fixedly provided with a guide post, the transverse moving plate is provided with a sliding groove, and the guide post extends into the sliding groove and is in sliding connection with the transverse moving plate.
As still further aspects of the utility model: the connector lug is arranged in an L-like shape, and the two connector lugs are provided with butt joint parts capable of being electrically connected;
the butt joint mechanism comprises two cylinders fixedly arranged on the top wall of the shell and sleeves respectively arranged on the two cylinders in a sliding manner, and a driven block is fixedly connected between the two sleeves;
the connector lug is fixedly arranged on the driven block, and one side of the driven block, which faces the pulley, is provided with an inclined plane matched with the pulley.
As still further aspects of the utility model: the adjusting component comprises a rotating shaft rotatably arranged in the shell, one end of the rotating shaft extends out of the shell, and a knob is fixedly arranged at the end of the rotating shaft;
the central axes of the rotating shaft, the pipe fitting and the driving pipe are coincident, and the rotating shaft and the pipe fitting are in sliding sleeve joint through a limiting structure.
As still further aspects of the utility model: the limiting structure comprises two limiting protrusions arranged on the outer wall of the rotating shaft and a limiting groove arranged on the inner wall of the pipe fitting and adapted to the limiting protrusions, wherein the limiting protrusions and the limiting groove are all arranged in a strip shape, and the limiting protrusions and the limiting groove are parallel to the central axis of the rotating shaft.
Compared with the prior art, the utility model has the beneficial effects that: the utility model has novel design, when in use, the ammeter and the two connector lugs are connected into a circuit, the ammeter can detect the current in the circuit in real time, when the ammeter is detected by the ammeter, namely the angle of the swinging arm along with the pointer deflection of the ammeter is increased, the traversing structure is driven to move towards the docking mechanism, if the movement stroke of the traversing structure is enough to match with the docking mechanism, the docking mechanism drives the two connector lugs to execute the separation action, so that the circuit is disconnected, the damage to the circuit caused by the longer duration of the excessively strong current is prevented, the danger is caused, the effective overload protection function is realized, and the current value required by the automatic disconnection of the circuit can be changed by adjusting the initial state of the traversing structure.
Drawings
Fig. 1 is a schematic structural view of an embodiment of an overload protection apparatus for a low voltage circuit breaker.
Fig. 2 is a schematic view illustrating an internal structure of a housing in an embodiment of an overload protection apparatus for a low voltage circuit breaker.
Fig. 3 is an enlarged view of the structure at a in fig. 2.
Fig. 4 is an enlarged view of the structure at B in fig. 2.
Fig. 5 is an exploded view of the structure of the conditioning assembly in one embodiment of the overload protection apparatus for a low voltage circuit breaker.
Fig. 6 is an exploded view of the structure of the docking mechanism in one embodiment of the overload protection apparatus for the low voltage circuit breaker.
In the figure: 1. a housing; 2. an ammeter; 3. swing arms; 4. a slide block; 5. a cross bar; 6. a transverse moving plate; 601. a chute; 7. a rotating shaft; 701. a limit protrusion; 702. a knob; 8. a pipe fitting; 801. a limit groove; 9. a driving tube; 901. a guide post; 10. a pulley; 11. a connector lug; 12. a driven block; 1201. an inclined plane; 13. a butt joint part; 14. a column; 15. a sleeve.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In addition, an element in the present disclosure may be referred to as being "fixed" or "disposed" on another element or being directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
Referring to fig. 1 to 6, in an embodiment of the present utility model, an overload protection device for a low voltage circuit breaker includes a housing 1, an ammeter 2 disposed in the housing 1 for monitoring a current value of a circuit, and further includes:
the swing arm 3 is coaxially and fixedly arranged with the pointer of the ammeter 2, and the swing arm 3 is connected with a transverse moving structure arranged in the shell 1;
the connector lug 11 is movably arranged on the shell 1 and is connected with a circuit, and the two connector lugs 11 are respectively connected with a group of butt joint mechanisms arranged in the shell 1, and the butt joint mechanisms are matched with the transverse moving structure.
When the ammeter 2 and the two connector lugs 11 are connected into a circuit in use, the ammeter 2 can detect the current in the circuit in real time, when the current detected by the ammeter 2 is large, namely the angle of the swinging arm 3 following the pointer deflection of the ammeter 2 is increased, the traversing structure is driven to move towards the abutting mechanism, if the movement stroke of the traversing structure is enough to enable the traversing structure to be matched with the abutting mechanism, the abutting mechanism drives the two connector lugs 11 to execute separation action, so that the circuit is disconnected, the circuit is prevented from being damaged due to long duration of the excessive current, danger is caused, and an effective overload protection function is realized.
Referring to fig. 3 again, the traversing structure includes two cross bars 5 fixedly installed inside the housing 1, traversing plates 6 slidably disposed on the two cross bars 5, and a slider 4 slidably disposed on the swing arm 3;
the sliding block 4 is rotatably connected with the transverse moving plate 6, and a driving piece matched with the docking mechanism is movably arranged on the transverse moving plate 6.
When the pointer of the ammeter 2 deflects, the swing arm 3 deflects along with the pointer of the ammeter 2, and drives the traverse plates 6 to slide on the two cross bars 5 towards the direction of the connector lug 11 through the sliding blocks 4, and correspondingly, the sliding blocks 4 slide along the length direction of the swing arm 3 and rotate relative to the traverse plates 6.
Referring to fig. 5 again, the driving member includes a tube 8 rotatably mounted on the traverse plate 6, a driving tube 9 slidably sleeved with the tube 8, and a pulley 10 rotatably mounted on an outer wall of the driving tube 9, and the tube 8 is connected with an adjusting assembly. The outer wall of the pipe fitting 8 and the inner wall of the driving pipe 9 are provided with mutually meshed threads, the outer wall of the driving pipe 9 is fixedly provided with a guide post 901, the transverse moving plate 6 is provided with a sliding groove 601, and the guide post 901 extends into the sliding groove 601 and is in sliding connection with the transverse moving plate 6.
Referring to fig. 4 and 6 again, the connector lugs 11 are arranged in an L-like shape, and two connector lugs 11 are provided with a butt joint part 13 capable of being electrically connected;
the butt joint mechanism comprises two columns 14 fixedly arranged on the top wall of the shell 1 and sleeves 15 respectively arranged on the two columns 14 in a sliding mode, and a driven block 12 is fixedly connected between the two sleeves 15. The connector lug 11 is fixedly mounted on the driven block 12, and an inclined surface 1201 matched with the pulley 10 is arranged on one side of the driven block 12 facing the pulley 10.
When the pulley 10 and the two driven blocks 12 are in a separated state, the two driven blocks 12 are in an abutting state, and meanwhile, the two abutting parts 13 are in an abutting state, so that the connection of a circuit can be realized through the two connector lugs 11;
however, when the pointer of the ammeter 2 deflects by a larger angle (i.e. the current in the circuit is higher), and the traversing plate 6 can drive the pulley 10 to press the two driven blocks 12, the two driven blocks 12 are allowed to yield and move away from each other due to the arrangement of the inclined plane 1201, and accordingly, the sleeve 15 slides on the column 14, and the abutting state of the two abutting parts 13 is terminated, so that the circuit can be automatically switched to an off state, the function of automatic power-off protection is realized when the current is too large, and the safety of the power transmission process is greatly improved.
In practical use, since the installation orientation of the device is not fixed, in order to ensure that the two abutting portions 13 can be in a stable abutting state (i.e. ensure a stable communicating state of the circuit) under the condition of normal circuit current, a sufficient sliding friction force should be provided between the sleeve 15 and the column 14, which can be realized by providing a damping sleeve or interference fit.
Referring to fig. 1 and 5 again, the adjusting assembly includes a rotating shaft 7 rotatably mounted in the housing 1, one end of the rotating shaft 7 extends out of the housing 1, and a knob 702 is fixedly mounted at the end. The central axes of the rotating shaft 7, the pipe fitting 8 and the driving pipe 9 are coincident, and the rotating shaft 7 and the pipe fitting 8 are in sliding sleeve joint through a limiting structure.
The limiting structure comprises two limiting protrusions 701 arranged on the outer wall of the rotating shaft 7 and a limiting groove 801 arranged on the inner wall of the pipe fitting 8 and matched with the limiting protrusions 701, wherein the limiting protrusions 701 and the limiting groove 801 are all arranged in a strip shape and parallel to the central axis of the rotating shaft 7.
In practical situations, due to the difference of safety currents of different circuits, when the safety current of the circuit is small, a worker can rotate the rotating shaft 7 forward through the knob 702, so that the rotating shaft 7 can drive the pipe fitting 8 to rotate through the limiting protrusion 701 and the limiting groove 801, correspondingly, the guide post 901 and the sliding groove 601 rotate the driving pipe 9, so that the driving pipe 9 and the pipe fitting 8 are in threaded fit to drive the pulley 10 to move a certain distance towards the driven block 12, and therefore, in an initial situation (the circuit is not switched on), the distance between the pulley 10 and the driven block 12 is reduced, the movement distance required by the pulley 10 to separate the two driven blocks 12 is reduced (namely, the current required by the circuit to be automatically disconnected is reduced), otherwise, when the safety current of the circuit is large, the rotating shaft 7 is reversely rotated, and the distance between the pulley 10 and the driven block 12 in the initial situation is increased.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (6)
1. The utility model provides a low voltage circuit breaker overload protection device, includes casing (1) and locates be used for monitoring ampere meter (2) of circuit current value in casing (1), its characterized in that still includes:
the swinging arm (3) is coaxially and fixedly arranged with the pointer of the ammeter (2), the swinging arm (3) is connected with a transverse moving structure arranged in the shell (1), and the transverse moving structure deflects to trigger the pointer of the ammeter (2) and can do linear motion in the shell (1);
the connector lug (11) is movably arranged on the shell (1) and connected with a circuit, the two connector lugs (11) are respectively connected with a group of butt joint mechanisms arranged in the shell (1), the butt joint mechanisms are matched with the transverse movement structures, when the pointer of the ammeter (2) deflects, and the transverse movement structures can be caused to be matched with the butt joint mechanisms, the butt joint mechanisms trigger to enable the two connector lugs (11) to execute separation actions.
2. The overload protection device for the low-voltage circuit breaker according to claim 1, wherein the traversing structure comprises two cross bars (5) fixedly installed inside the shell (1), traversing plates (6) slidably arranged on the two cross bars (5) and sliding blocks (4) slidably arranged on the swing arms (3);
the sliding block (4) is rotationally connected with the transverse moving plate (6), and a driving piece matched with the abutting mechanism is movably arranged on the transverse moving plate (6).
3. The overload protection device of a low voltage circuit breaker according to claim 2, characterized in that the driving member comprises a tube member (8) rotatably mounted on the traverse plate (6), a driving tube (9) slidably fitted with the tube member (8), and a pulley (10) rotatably mounted on the outer wall of the driving tube (9), the tube member (8) being connected with an adjusting assembly;
the device comprises a pipe fitting (8), a driving pipe (9) and a sliding groove (601) arranged on a transverse moving plate (6), wherein threads meshed with each other are arranged on the outer wall of the pipe fitting (8) and the inner wall of the driving pipe (9), a guide post (901) is fixedly arranged on the outer wall of the driving pipe (9), and the guide post (901) stretches into the sliding groove (601) and is in sliding connection with the transverse moving plate (6).
4. A low-voltage circuit breaker overload protection device according to claim 3, characterized in that the connector lugs (11) are arranged in an L-like shape, and that the two connector lugs (11) are provided with a butt joint part (13) capable of electrical connection;
the butt joint mechanism comprises two columns (14) fixedly arranged on the top wall of the shell (1), sleeves (15) respectively arranged on the two columns (14) in a sliding mode, and driven blocks (12) are fixedly connected between the two sleeves (15);
the connector lug (11) is fixedly mounted on the driven block (12), and one side, facing the pulley (10), of the driven block (12) is provided with an inclined surface (1201) matched with the pulley (10).
5. A low-voltage circuit breaker overload protection device according to claim 3, characterized in that the adjustment assembly comprises a rotating shaft (7) rotatably mounted in the housing (1), one end of the rotating shaft (7) protruding outside the housing (1) and having a knob (702) fixed thereto;
the central axes of the rotating shaft (7), the pipe fitting (8) and the driving pipe (9) are coincident, and the rotating shaft (7) and the pipe fitting (8) are in sliding sleeve joint through a limiting structure.
6. The overload protection device for the low-voltage circuit breaker according to claim 5, wherein the limiting structure comprises two limiting protrusions (701) arranged on the outer wall of the rotating shaft (7) and a limiting groove (801) arranged on the inner wall of the pipe fitting (8) and matched with the limiting protrusions (701), the limiting protrusions (701) and the limiting groove (801) are arranged in a strip shape, and the limiting protrusions are parallel to the central axis of the rotating shaft (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320999508.1U CN219497700U (en) | 2023-04-27 | 2023-04-27 | Overload protection device for low-voltage circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320999508.1U CN219497700U (en) | 2023-04-27 | 2023-04-27 | Overload protection device for low-voltage circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219497700U true CN219497700U (en) | 2023-08-08 |
Family
ID=87513801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320999508.1U Active CN219497700U (en) | 2023-04-27 | 2023-04-27 | Overload protection device for low-voltage circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219497700U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118173413A (en) * | 2024-05-10 | 2024-06-11 | 昆山盛英电气有限公司 | Emergency protection device for circuit breaker and high-voltage power distribution cabinet |
-
2023
- 2023-04-27 CN CN202320999508.1U patent/CN219497700U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118173413A (en) * | 2024-05-10 | 2024-06-11 | 昆山盛英电气有限公司 | Emergency protection device for circuit breaker and high-voltage power distribution cabinet |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN219497700U (en) | Overload protection device for low-voltage circuit breaker | |
| CN111508798B (en) | Automatic replacement fuse, fuse assembly and control method | |
| CN201838528U (en) | Minitype circuit breaker | |
| CN101930883A (en) | Small-sized breaker | |
| CN202650882U (en) | A rack of grounding switches | |
| CN201084636Y (en) | A capacitor bank fling-cut special vacuum switch | |
| CN210489505U (en) | Safety high-voltage isolating switch | |
| CN207542172U (en) | Snap switch and with its breaker | |
| CN112713062A (en) | Avoid circuit breaker auxiliary device for intelligent manufacturing of tripping operation mechanism jam | |
| CN219610334U (en) | Low-voltage circuit breaker based on electromagnet closing structure | |
| CN208835004U (en) | A kind of SCB switch and its automatic reclosing formula SCB stacked switch being resistant to lightning current | |
| CN208157338U (en) | A kind of reclosing breaker | |
| CN220856481U (en) | Circuit breaker | |
| CN116073250B (en) | Outdoor deep fusion intelligent 10KV totally-enclosed type platform region | |
| CN205230964U (en) | Contact system of high voltage direct current contactor | |
| CN217740456U (en) | Operating mechanism of circuit breaker | |
| CN204332854U (en) | A kind of transmission device of auxiliary switch for circuit breaker | |
| CN115394020B (en) | Early warning device for distribution switchgear based on partial discharge characteristic signal analysis | |
| CN213460490U (en) | Main body mechanism of dual-power incoming line switch cabinet | |
| CN212695108U (en) | Remote resetting device of universal circuit breaker | |
| CN221447793U (en) | Hot-plug type power distribution cabinet with loop temperature monitoring function | |
| CN216980480U (en) | Vehicle-mounted direct current circuit breaker with indirect tripping function | |
| CN209070037U (en) | A kind of current-limiting reactor on-line monitoring protective device | |
| CN210805644U (en) | Micro circuit breaker power supply | |
| CN209312600U (en) | A kind of touch base structure of on-load switch |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |