CN210349682U - Tripping device of load switch - Google Patents

Abstract

The utility model provides a load switch's trip gear relates to load switch trip gear field, including fixed bolster and armature, the fixed bolster includes vertical fixed plate, is provided with on the vertical fixed plate and links up the iron groove, and armature includes the turning block, and the both sides of turning block are provided with the axis of rotation, and the turning block passes through the axis of rotation and rotates and install in linking up the iron groove, and the one end that the turning block kept away from in the iron groove is provided with the extension plate, the upper end fixedly connected with spring of extension plate, and the end of extension plate is provided with moves the iron sheet, and the upper end of bottom plate is provided with trip coil subassembly. The utility model discloses in through the setting of extension plate for moving the iron sheet and having lengthened to the distance of axis of rotation, the coil is greater than the arm of force of spring to the arm of force of moving the iron sheet, very little suction alright disconnection release, through the setting of two trip coil, moves the disc structure at iron sheet both ends on the cooperation, can adsorb armature fast, and it is effectual to thread off, whole device low cost, operates steadily, long service life, easily promotes.

Description

Tripping device of load switch

Technical Field

The utility model relates to a load switch trip gear field especially relates to a load switch's trip gear.

Background

The load switch is a switching device between a circuit breaker and a disconnecting switch, and has a simple arc-extinguishing device, and can cut off rated load current and a certain overload current, but can not cut off short-circuit current.

Conventionally, an electromagnetic trip device for breaking an electric circuit is generally mounted on an electric appliance such as a circuit breaker or a control protection circuit. When short circuit, overload and other problems occur, the electromagnetic tripping device can quickly break the circuit, and accidents are prevented.

At present, most of the conventional releases are used for tripping, but the conventional releases have the following defects: the traditional release uses a trip coil as a single coil, the magnetic field force generated by the coil is small, the breaking speed is reduced, meanwhile, the coil generates heat greatly, and the overall efficiency is low; the length of a common armature is relatively short, and the armature is not easily driven to move by magnetic field force generated by a coil due to the structure.

Disclosure of Invention

An object of the utility model is to provide a load switch's trip gear to solve above-mentioned technical problem.

The utility model discloses a solve above-mentioned technical problem, adopt following technical scheme to realize: the utility model provides a trip gear of load switch, includes fixed bolster and armature, its characterized in that:

the fixed support comprises a vertical fixed plate, a top plate is horizontally arranged at the upper end of the vertical fixed plate, a bottom plate is horizontally arranged at the lower end of the vertical fixed plate, an armature groove is arranged on the vertical fixed plate, an armature comprises a rotating block, rotating shafts are arranged on two sides of the rotating block, the rotating block is rotatably installed in the armature groove through the rotating shafts, an elongated plate is arranged at one end, away from the armature groove, of the rotating block, a spring is fixedly connected to the upper end of the elongated plate, the tail end of the spring is fixed to the lower end face of the top plate, a movable iron sheet is arranged at the tail end of the elongated plate, a tripping coil assembly is arranged at the upper end of the bottom plate and is positioned below the movable iron sheet, a vertical limiting plate is arranged at one end, away from the elongated plate, an ejector rod is arranged on the outer side wall of the limiting plate and extends towards the, the lower end of the back of the vertical fixing plate is provided with a mounting hole. Through the setting of fixed bolster, accomplish the fixed to whole trip gear, the setting of armature, can accomplish the dropout process, setting through the extension plate, make moving iron sheet lengthen to the distance of axis of rotation, the relation of power and the arm of force can reachd, the coil is greater than the arm of force of spring to the arm of force of moving iron sheet, so only need be less than the power of spring, alright disconnection release, the off-speed is fast, high sensitivity, setting through trip coil subassembly, a plurality of coils adsorb armature simultaneously, accelerate the off-speed, the effect of limiting plate is firstly fixed ejector pin, secondly prevent rotor turned angle too big.

Preferably, the length of the elongated plate is equal to half of the length of the bottom plate.

Preferably, the fixing point of the spring and the elongated plate is located at the middle position of the elongated plate.

Preferably, the tripping coil assembly comprises two tripping coils, the two tripping coils are arranged in parallel with the vertical fixing plate, a framework is arranged in each tripping coil, the lower end of each framework is fixed on the bottom plate, and an electromagnetic iron core is arranged at the vertical center in each framework; the electromagnetic iron core is fixedly connected with the framework; the tail end of the tripping coil is provided with a tripping coil end, and the tripping coil end is connected with a wire. Through the arrangement of the two tripping coils, the armature can be quickly adsorbed by matching with the disc-shaped structures at the two ends of the upper moving iron sheet, and the tripping effect is good.

Preferably, both ends of the moving iron sheet are of disc-shaped structures and are respectively positioned above the two tripping coils.

Preferably, a cap is arranged at the upper end of the electromagnetic iron core. The cap increases the suction property, the ejector rod acts instantly, and the mechanism which is linked with the ejector rod is ejected to disconnect the circuit.

The utility model has the advantages that:

the utility model discloses in the setting through the fixed bolster, accomplish fixed to whole trip gear, the setting of armature, can accomplish the dropout process, setting through the extension plate, make the distance of moving the iron sheet to the axis of rotation become long, the relation of power and the arm of force can reach, the arm of force of coil to moving the iron sheet is greater than the arm of force of spring, so only need be less than the power of spring, alright disconnection release, the off-line speed is fast, high sensitivity, setting through the trip coil subassembly, a plurality of coils adsorb armature simultaneously, accelerate the off-line speed, setting through two trip coil, move the disc structure at iron sheet both ends on the cooperation, can adsorb armature fast, it is effectual to trip, whole device low cost, operate steadily, long service life, and easy popularization.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

fig. 2 is a schematic structural diagram of the armature of the present invention;

FIG. 3 is a schematic view of the structure of the present invention;

fig. 4 is a schematic view of the three-dimensional structure of the trip coil of the present invention;

reference numerals: 1-fixing a bracket; 101-vertical fixing plate; 102-a top plate; 103-a backplane; 104-armature slot; 2-an armature; 201-turning block; 202-a lengthened plate; 203-moving iron sheet; 3-a rotating shaft; 4-a spring; 5-trip coil assembly; 501-a trip coil; 502-skeleton; 503-electromagnet core; 504-trip coil end; 6-a limiting plate; 7-a mandril; 8-salient points; 9-mounting holes.

Detailed Description

In order to make the technical means, the creation features, the achievement purposes and the functions of the present invention easy to understand, the present invention will be further explained below with reference to the following embodiments and the accompanying drawings, but the following embodiments are only the preferred embodiments of the present invention, and not all embodiments are included. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative efforts belong to the protection scope of the present invention.

Specific embodiments of the present invention will be described below with reference to the accompanying drawings.

Example 1

As shown in fig. 1-4, a tripping device of a load switch comprises a fixed bracket 1 and an armature 2, the fixed bracket 1 comprises a vertical fixed plate 101, a top plate 102 is horizontally arranged at the upper end of the vertical fixed plate 101, a bottom plate 103 is horizontally arranged at the lower end of the vertical fixed plate 101, an armature groove 104 is arranged on the vertical fixed plate 101, the armature 2 comprises a rotating block 201, rotating shafts 3 are arranged at two sides of the rotating block 201, the rotating block 201 is rotatably installed in the armature groove 104 through the rotating shafts 3, an elongated plate 202 is arranged at one end of the rotating block 201 far away from the armature groove 104, a spring 4 is fixedly connected at the upper end of the elongated plate 202, the tail end of the spring 4 is fixed at the lower end surface of the top plate 102, a moving iron sheet 203 is arranged at the tail end of the elongated plate 202, a tripping coil assembly 5 is arranged at the upper end of the bottom plate 103, the tripping coil assembly 5 is arranged below the moving iron sheet 203, a limit plate, the outer side wall of the limiting plate 6 is provided with an ejector rod 7, the ejector rod 7 extends in the direction away from the vertical fixing plate 101, the left side and the right side of the vertical fixing plate 101 are provided with salient points 8, and the lower end of the back of the vertical fixing plate 101 is provided with a mounting hole 9.

The trip coil assembly 5 comprises two trip coils 501, the two trip coils 501 are arranged in parallel with the vertical fixing plate 101, a framework 502 is arranged inside each trip coil 501, the lower end of each framework 502 is fixed on the bottom plate 103, and an electromagnetic core 503 is arranged at the vertical center inside each framework 502; the electromagnetic iron core 503 is fixedly connected with the framework 502; the end of the trip coil 501 is provided with a trip coil end 504, and the trip coil end 504 is connected with a wire.

The working principle is as follows: the electromagnetic tripping device is fixedly connected in a circuit through the salient point 8, the mounting hole 9 and the tripping coil end 504; when the circuit works normally, the magnetic fluxes acted on the moving iron sheet 203 by the two trip coils 501 are not changed, so that the magnetic field force generated by the electromagnetic iron core 503 is smaller than the elastic force acted on the armature 2 by the spring 4, and the armature 2 does not act;

when the current and voltage of the circuit change, the two trip coils 501 generate magnetic flux acting on the electromagnetic iron core 503, the two trip coils 501 are adopted to increase magnetic field force, so that the electromagnetic iron core 503 generates attraction force which is larger than the elastic force acting on the armature 2, the moving iron sheet 203 is attracted instantly, the lengthening plate 202 rotates around the rotating block 201 in the armature slot 104 at the moment, and due to the arrangement of the lengthening plate 202, the action point of the spring 4 is positioned at the middle point of the upper end of the lengthening plate 202, and the electromagnetic iron core 503 generates attraction force at the moving iron sheet 203, so that the armature 2 can be attracted immediately when the electromagnetic iron core 503 generates the attraction force which is smaller than the elastic force of the spring 4 according to the magnitude relation of force arm and force, and the armature 2 starts to rotate; the armature 2 rotates to drive the limiting plate 6 to rotate, the ejector rod 7 acts instantly, the mechanism which is pushed to the linkage of the ejector rod breaks a circuit, and the whole tripping action is completed.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (6)

1. The utility model provides a trip gear of load switch, includes fixed bolster (1) and armature (2), its characterized in that:

the fixed support (1) comprises a vertical fixed plate (101), a top plate (102) is horizontally arranged at the upper end of the vertical fixed plate (101), a bottom plate (103) is horizontally arranged at the lower end of the vertical fixed plate (101), an armature groove (104) is arranged on the vertical fixed plate (101), an armature (2) comprises a rotating block (201), rotating shafts (3) are arranged on two sides of the rotating block (201), the rotating block (201) is rotatably installed in the armature groove (104) through the rotating shafts (3), an elongated plate (202) is arranged at one end, far away from the armature groove (104), of the rotating block (201), a spring (4) is fixedly connected to the upper end of the elongated plate (202), the tail end of the spring (4) is fixed on the lower end face of the top plate (102), a movable iron sheet (203) is arranged at the tail end of the elongated plate (202), a tripping coil assembly (5) is arranged at the upper end of the bottom plate (103), and the tripping coil assembly (5) is positioned below, one end of the rotating block (201) far away from the lengthened plate (202) is vertically provided with a limiting plate (6), an ejector rod (7) is arranged on the outer side wall of the limiting plate (6), the ejector rod (7) extends in the direction away from the vertical fixing plate (101), salient points (8) are arranged on the left side and the right side of the vertical fixing plate (101), and a mounting hole (9) is formed in the lower end of the back of the vertical fixing plate (101).

2. The trip device of the load switch according to claim 1, wherein: the length of the lengthened plate (202) is equal to half of the length of the bottom plate (103).

3. The trip device of the load switch according to claim 1, wherein: the fixing point of the spring (4) and the lengthened plate (202) is positioned in the middle of the lengthened plate (202).

4. The trip device of the load switch according to claim 1, wherein: trip coil subassembly (5) include two trip coil (501), and two trip coil (501) and vertical fixed plate (101) parallel arrangement, and the inside of every trip coil (501) is provided with skeleton (502), and the lower extreme of skeleton (502) is fixed on bottom plate (103), and the inside perpendicular center department of skeleton (502) is equipped with electromagnetic core (503), electromagnetic core (503) with skeleton (502) fixed connection, the end of trip coil (501) is provided with trip coil end (504), trip coil end (504) and connection of electric lines.

5. The trip device of the load switch according to claim 4, wherein: two ends of the moving iron sheet (203) are of disc-shaped structures and are respectively positioned above the two tripping coils (501).

6. The trip device of the load switch according to claim 4, wherein: and a cover cap is arranged at the upper end of the electromagnetic iron core (503).

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