CN213717380U

CN213717380U - High-low voltage electric box with short-circuit protection structure

Info

Publication number: CN213717380U
Application number: CN202022774318.9U
Authority: CN
Inventors: 席炯炯
Original assignee: Shanghai Huavalue Electrical Equipment Co ltd
Current assignee: Shanghai Huavalue Electrical Equipment Co ltd
Priority date: 2020-11-25
Filing date: 2020-11-25
Publication date: 2021-07-16
Anticipated expiration: 2030-11-25

Abstract

The utility model discloses a high-low voltage electric box with a short-circuit protection structure, which comprises a box body and a second insulating plate, wherein a partition plate is fixed at one side of the box body close to a first insulating plate; one side of the groove is connected with a fixed rod, one end of the branch electric wire is connected with a branch switch, and the second insulating plate close to the branch switch is fixed on one side of the interior of the box body. This kind of high-low voltage electronic box with short-circuit protection structure, be provided with draw-in groove and stripper plate, trunk circuit electric wire and each branch road electric wire in the box all have the draw-in groove that corresponds, pull up the stripper plate, it is rotatory with the torsional spring to make the stripper plate pass through the dead lever, and compress the torsional spring simultaneously and make its deformation, then inside filling in the draw-in groove with corresponding trunk circuit electric wire or branch road electric wire, loosen the stripper plate again, the stripper plate restores automatic re-setting under the reaction force of deformation and blocks the draw-in groove at the torsional spring, prevent trunk circuit electric wire or branch road electric wire roll-off, avoid intertwining between trunk circuit electric wire and the branch road electric.

Description

High-low voltage electric box with short-circuit protection structure

Technical Field

The utility model relates to an electrical equipment technical field specifically is a high-low voltage electronic box with short-circuit protection structure.

Background

The high-low voltage power distribution cabinet is the distribution equipment used for distributing electric energy, controlling, metering and connecting cables in the power supply system, general power supply station, the substation uses high-voltage switch cabinet, then draw out low-voltage power distribution cabinet through transformer step-down low-voltage side, low-voltage power distribution cabinet arrives each power distribution panel of using electricity again, the control box, the switch box, the inside is through assembling some switches, the circuit breaker, the fuse, the button, the pilot lamp, the instrument, protection devices such as electric wire become integrative and reach the distribution equipment of the distribution device that the design function required, along with the development of science and technology, the high-low voltage power box that has the short-circuit protection structure has had very big degree of development, its development has brought very big facility when carrying out short-circuit protection to high-low voltage power box for people, its kind and quantity are also increasing day by day.

Most of high-low voltage electric boxes with short-circuit protection structures in the market only use fuses, but under many conditions, when the current exceeds the maximum allowable current, the fuses only become soft but cannot be fused, so that a circuit system cannot be cut off, or the fuse is low in fusing speed and cannot be cut off in time, wires in the high-low voltage electric boxes are easy to cross contact, circuit faults are caused, an independent protection device is lacked among switch circuits, once a certain switch is short-circuited to cause a fire disaster, other equipment is easy to be damaged, and therefore the existing high-low voltage electric boxes with the short-circuit protection structures are improved.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high low-voltage electric box with short-circuit protection structure, the high low-voltage electric box that has short-circuit protection structure on solving the present market that above-mentioned background art provided mostly only uses the fuse, but under many circumstances, the electric current is when exceeding allowwing maximum current, the fuse only becomes soft, but can not fuse, make circuit system can not cut off, or, the speed of fuse fusing is slower, can not break off in time, the easy cross contact of electric wire in the high low-voltage electric box, cause circuit fault, lack independent protector between each switch circuit, in case certain switch department takes place the short circuit and arouses the conflagration to cause the problem that also causes the injury to other equipment easily.

In order to achieve the above object, the utility model provides a following technical scheme: a high-low voltage electric box with a short-circuit protection structure comprises a box body and a second insulating plate, wherein a main switch is installed inside the box body, a first insulating plate is fixed on one side of the box body close to the main switch, and a partition plate is fixed on one side of the box body close to the first insulating plate;

a sliding groove is formed in one side of the first insulating plate, a guide rod is connected to one side of the sliding groove, a first wiring board is connected between the guide rods, a fuse is connected between the first wiring board and a main switch, a main line wire is connected to the bottom of the first wiring board, and a spring is connected between the first wiring board close to the main line wire and the partition plate;

be close to the main line electric wire be fixed with the second wiring board between the division board, the bottom of second wiring board is connected with the branch road electric wire, is close to main line electric wire and branch road electric wire the draw-in groove has all been seted up to one side of division board, is close to the draw-in groove one side of division board is seted up flutedly, one side of recess is connected with the dead lever, one side of dead lever is connected with the torsional spring, is close to the draw-in groove one side of torsional spring is connected with the stripper plate, the one end of branch road electric wire is connected with branch switch, is close to branch switch the inside one side.

Preferably, two groups of partition plates are arranged, and the partition plates are made of fireproof materials with surfaces impregnated with thermosetting resin.

Preferably, the fuse is provided with three groups, and the fuse is of an aluminum magnesium alloy material with a lower melting point.

Preferably, the first wiring board forms a telescopic structure through a spring, and the first wiring board is in sliding connection with the guide rod.

Preferably, the extrusion plate is provided with four groups, and the extrusion plate and the torsion spring form a rotating structure through a fixed rod.

Preferably, the branch switches are provided with three groups, the second insulating plates are provided with four groups, and a group of branch switches is arranged between every two adjacent groups of the second insulating plates.

Compared with the prior art, the beneficial effects of the utility model are that: this high-low voltage electronic box with short-circuit protection structure:

1. the fuse and the spring are arranged, when a main switch or a certain branch switch in the box body is in short circuit, the current of a main circuit wire can be increased to enable the fuse to become soft, so that the maximum tensile force borne by the fuse can be reduced, when the maximum tensile force value is smaller than the tensile force given by the spring, the fuse can be broken, the current in the whole main circuit wire and the current in a branch circuit wire are disconnected, the phenomenon that the huge current generates overheating to cause larger damage is avoided, and the effect of short circuit protection is achieved;

2. the main line wires and each branch line wire in the box body are provided with corresponding clamping grooves, the extrusion plate is pulled up to enable the extrusion plate to rotate through a fixed rod and a torsion spring, the torsion spring is compressed to enable the torsion spring to deform, then the corresponding main line wires or branch line wires are plugged into the clamping grooves, the extrusion plate is loosened, the extrusion plate automatically resets under the reactive force of the torsion spring restoring deformation to block the clamping grooves, the main line wires or the branch line wires are prevented from sliding out, and the main line wires and the branch line wires are prevented from being wound mutually;

3. be provided with first insulation board and second insulation board, when main switch or certain branch switch department break down the circuit and burst when spark, first insulation board and second insulation board can be isolated with the department of breaking down, avoid the strong current directly to destroy other equipment, when the conflagration produces, the division board can be isolated with main switch from top to bottom and branch switch, prevents the intensity of a fire to stretch to reduce the loss.

Drawings

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

FIG. 2 is a schematic view of the enlarged structure of the part A of the present invention;

fig. 3 is a schematic diagram of the local enlarged structure at the position B of the present invention.

In the figure: 1. a box body; 2. a master switch; 3. a first insulating plate; 4. a partition plate; 5. a fuse; 6. a first wiring board; 7. a trunk wire; 8. a spring; 9. a chute; 10. a guide bar; 11. a second wiring board; 12. a groove; 13. fixing the rod; 14. a torsion spring; 15. a pressing plate; 16. a card slot; 17. branch wires; 18. a branch switch; 19. a second insulating plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a high-low voltage electric box with a short-circuit protection structure comprises a box body 1, a main switch 2, a first insulating plate 3, a partition plate 4, a fuse 5, a first wiring board 6, a main line wire 7, a spring 8, a chute 9, a guide rod 10, a second wiring board 11, a groove 12, a fixed rod 13, a torsion spring 14, an extrusion plate 15, a clamping groove 16, a branch line wire 17, a branch switch 18 and a second insulating plate 19, a main switch 2 is arranged in the box body 1, a first insulating plate 3 is fixed at one side of the box body 1 close to the main switch 2, a partition plate 4 is fixed at one side of the box body 1 close to the first insulating plate 3, two groups of partition plates 4 are arranged, the partition plates 4 are made of fireproof materials with thermosetting resin impregnated on the surfaces, when a fire disaster occurs, the partition plate 4 can isolate the upper main switch 2 and the lower main switch 2 from the branch switch 18, so that the fire is prevented from spreading, and the loss is reduced;

the fuse structure is characterized in that a sliding groove 9 is formed in one side of the first insulating plate 3, a guide rod 10 is connected to one side of the sliding groove 9, a first wiring board 6 is connected between the guide rods 10, the first wiring board 6 forms a telescopic structure through a spring 8, the first wiring board 6 is in sliding connection with the guide rods 10, the current of a main line wire 7 is increased to enable the fuse 5 to become soft, the maximum tensile force borne by the fuse 5 is reduced, when the maximum tensile force is smaller than the tensile force given by the spring 8, the fuse 5 is broken, then the first wiring board 6 slides downwards through the guide rods 10, the fuse 5 is connected between the first wiring board 6 and the main switch 2, three groups of fuses 5 are arranged, the fuse 5 is made of aluminum magnesium alloy with a lower melting point, when the main switch 2 or a certain sub-switch 18 in the box body 1 is short-circuited, the current of the main line wire 7 can be increased to soften the fuse 5, so that the fuse 5 can be conveniently broken, the main line wire 7 is connected to the bottom of the first wiring board 6, and a spring 8 is connected between the first wiring board 6 close to the main line wire 7 and the partition board 4;

a second wiring board 11 is fixed between the partition boards 4 close to the trunk wires 7, the bottom of the second wiring board 11 is connected with branch wires 17, one side of each partition board 4 close to the trunk wires 7 and the branch wires 17 is provided with a clamping groove 16, one side of each partition board 4 close to the clamping groove 16 is provided with a groove 12, one side of each groove 12 is connected with a fixed rod 13, one side of each fixed rod 13 is connected with a torsion spring 14, one side of each torsion spring 14 close to the clamping groove 16 is connected with a squeezing plate 15, the squeezing plates 15 are provided with four groups, the squeezing plates 15 form a rotating structure through the fixed rods 13 and the torsion springs 14, the squeezing plates 15 are pulled up, the squeezing plates 15 rotate with the torsion springs 14 through the fixed rods 13 and simultaneously compress the torsion springs 14 to deform the torsion springs, then the corresponding trunk wires 7 or the branch wires 17 are plugged into the clamping grooves 16, and then the squeezing, the extrusion plate 15 is automatically reset under the reactive force of the torsional spring 14 restoring deformation to block the clamping groove 16, the main line electric wire 7 or the branch electric wire 17 is prevented from sliding out, the mutual winding between the main line electric wire 7 and the branch electric wire 17 is avoided, one end of the branch electric wire 17 is connected with the branch switch 18, the branch switch 18 is provided with three groups, the second insulation plates 19 are provided with four groups, a group of branch switches 18 is arranged between every two adjacent groups of second insulation plates 19, when the main switch 2 or a certain branch switch 18 generates circuit faults and bursts electric sparks, the first insulation plate 3 and the second insulation plates 19 can isolate the fault occurrence positions, the strong current is prevented from directly damaging other equipment, and the second insulation plates 19 close to the branch switches 18 are fixed on one side of the inside of the box body 1.

The working principle is as follows: when the high-low voltage electric box with the short-circuit protection structure is used, firstly, when a main switch 2 or a certain branch switch 18 in a box body 1 is short-circuited, the current of a trunk line electric wire 7 is increased to soften the fuse 5, so that the maximum tensile force borne by the fuse 5 is reduced, when the maximum tensile force value is smaller than the tensile force given by a spring 8, the fuse 5 is broken, the current in the whole trunk line electric wire 7 and the current in branch line electric wires 17 are disconnected, the phenomenon that the current is overheated to cause larger damage is avoided, the short-circuit protection effect is achieved, the trunk line electric wire 7 and each branch line electric wire 17 in the box body 1 are provided with corresponding clamping grooves 16, the extrusion plate 15 is pulled up, the extrusion plate 15 and the torsion spring 14 are rotated through the fixed rod 13 and are compressed to deform the torsion spring 14 at the same time, then the corresponding trunk line electric wire 7 or branch line electric wire 17 is plugged into the clamping grooves 16, and then the extrusion plate 15 is loosened, the extrusion plate 15 is automatically reset under the reactive force of the torsional spring 14 restoring deformation to block the clamping groove 16, so that the trunk line electric wire 7 or the branch line electric wire 17 is prevented from sliding out, mutual winding between the trunk line electric wire 7 and the branch line electric wire 17 is avoided, when a circuit fault occurs at the main switch 2 or a certain branch switch 18 and electric sparks burst occurs, the fault occurrence part is isolated by the first insulation plate 3 and the second insulation plate 19, other equipment is prevented from being directly damaged by strong current, when a fire disaster occurs, the upper and lower main switches 2 and the branch switches 18 are isolated by the separation plate 4, and the fire potential is prevented from spreading, so that the loss is reduced.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a high low-voltage electric box with short-circuit protection structure, includes box (1) and second insulation board (19), its characterized in that: a main switch (2) is installed inside the box body (1), a first insulating plate (3) is fixed on one side of the box body (1) close to the main switch (2), and a partition plate (4) is fixed on one side of the box body (1) close to the first insulating plate (3);

a sliding groove (9) is formed in one side of the first insulating plate (3), one side of the sliding groove (9) is connected with guide rods (10), a first wiring board (6) is connected between the guide rods (10), a fuse (5) is connected between the first wiring board (6) and the main switch (2), a main line electric wire (7) is connected to the bottom of the first wiring board (6), and a spring (8) is connected between the first wiring board (6) close to the main line electric wire (7) and the partition plate (4);

be close to main line electric wire (7) be fixed with second wiring board (11) between division board (4), the bottom of second wiring board (11) is connected with branch road electric wire (17), is close to main line electric wire (7) and branch road electric wire (17) draw-in groove (16) have all been seted up to one side of division board (4), is close to draw-in groove (16) one side of division board (4) is seted up flutedly (12), one side of recess (12) is connected with dead lever (13), one side of dead lever (13) is connected with torsional spring (14), is close to draw-in groove (16) one side of torsional spring (14) is connected with stripper plate (15), the one end of branch road electric wire (17) is connected with branch switch (18), is close to branch switch (18) second insulation board (19) are fixed in inside one side of box (1).

2. The high-low voltage electric box with the short-circuit protection structure according to claim 1, characterized in that: the two groups of partition plates (4) are arranged, and the partition plates (4) are made of fireproof materials with surfaces impregnated with thermosetting resin.

3. The high-low voltage electric box with the short-circuit protection structure according to claim 1, characterized in that: the fuse (5) is provided with three groups, and the fuse (5) is made of aluminum-magnesium alloy with a lower melting point.

4. The high-low voltage electric box with the short-circuit protection structure according to claim 1, characterized in that: the first wiring board (6) forms a telescopic structure through a spring (8), and the first wiring board (6) is in sliding connection with the guide rod (10).

5. The high-low voltage electric box with the short-circuit protection structure according to claim 1, characterized in that: the four groups of the extrusion plates (15) are arranged, and the extrusion plates (15) and the torsion springs (14) form a rotating structure through the fixing rods (13).

6. The high-low voltage electric box with the short-circuit protection structure according to claim 1, characterized in that: the branch switches (18) are provided with three groups, the second insulating plates (19) are provided with four groups, and one group of branch switches (18) is arranged between every two adjacent groups of second insulating plates (19).