CN211063143U - A zero-connection protection device for low-voltage power systems - Google Patents

Abstract

The utility model discloses a zero connection protection device for a low-voltage power system, which comprises an installation base, a box body, a box door, a handle, a dismounting heat-radiating component, a zero connection electrical element body, a buffer component, a top plate and universal wheels, wherein the box body is fixedly installed at the top end of the installation base; the utility model discloses a, convenient to use can effectually dispel the heat to the electrical equipment of incasement, can be convenient dismantle and install the incasement interlayer, and can adjust the incasement interlayer space size according to electrical equipment's high needs, makes things convenient for electrical equipment's fixed mounting, can carry out the shock attenuation of buffering to this device when removing to whole device, and the operation that connects zero protection device in the assurance box is stable.

Description

A zero-connection protection device for low-voltage power systems

technical field

The utility model relates to the field of low-voltage power system equipment, in particular to a zero-connection protection device for a low-voltage power system.

Background technique

Where the voltage to ground is 1000V and below, it is low voltage. The 220V three-phase four-wire system and the 380V/220V neutral point grounding system in the AC system are all low-voltage, and connect the metal shell of the electrical equipment to the neutral line of the power grid to protect personal safety. In a zero-connected power grid with a voltage lower than 1000V, if the electrical equipment is charged with the metal casing due to insulation damage or unexpected circumstances, a single-phase short circuit between the phase line and the neutral line is formed, and the protection device on the line (automatic Switches or fuses) act quickly to cut off the power supply, so that the metal parts of the equipment will not be exposed to dangerous voltages for a long time, which ensures personal safety. The existing zero-connection protection device for low-voltage power systems is inconvenient to use, cannot adjust the space in the box according to the size of the electrical components, cannot make full use of it, and cannot properly buffer and dissipate the entire device during use.

Utility model content

The purpose of the present invention is to provide a zero-connection protection device for a low-voltage power system to solve the above-mentioned problems in the background art.

The purpose of the present utility model can be achieved through the following technical solutions:

A zero-connection protection device for a low-voltage power system, comprising a mounting base, a box body, a box door, a handle, a disassembly and assembly heat dissipation component, a zero-connecting electrical component body, a buffer component, a top plate and a universal wheel, and the top of the mounting base is fixedly installed There is a box body, one side of the box body is movably connected with a box door through a hinge, one side of the box door is provided with a handle, the top of the box body is fixedly installed with a top plate, and the four corners of the installation base are fixedly installed with a universal Wheels, and a dismountable heat dissipation component is arranged in the box;

The disassembly and assembly heat dissipation assembly includes a concave slide rail, a first slide plate, a support plate, a chute, a slider, a partition plate, a ventilation pipe and a heat dissipation fan. A sliding rail, a first sliding plate is slidably connected in the concave sliding rail, the bottom end of the first sliding plate is fixedly connected with the top end of the supporting plate, and a number of first sliding grooves are fixedly installed on one side of the supporting plate, so A first sliding block is slidably connected in the first chute, the top of the first sliding block is fixedly connected to one side of the bottom end of the baffle plate, and one side of the top end of the baffle plate is fixedly installed with a zero-connecting electrical component body, and the baffle plate is fixed on one side. A ventilation pipe is fixedly installed through the inner wall of the bottom end of the box under the plate, one side inner wall of the ventilation pipe is fixedly installed with a cooling fan through a mounting frame, and a buffer assembly is arranged inside the top of the mounting base;

The buffer assembly includes a connecting box, a first spring, a telescopic rod, a connecting plate, a connecting rod, a second sliding plate, a sliding rod and a second spring, and a connecting box is fixedly installed on one side of the inner wall of the bottom end of the mounting base. One end of two first springs is fixedly installed on one side of the top of the box, and the other ends of the two first springs are fixedly installed on one side of the outer wall of the bottom end of the box body, and one end of the telescopic rod is fixedly installed on one side of the bottom end of the box body The other end of the telescopic rod penetrates the top outer wall of the connecting box and is fixedly installed on the top of the connecting plate, the connecting plate is slidably connected in the connecting box, and one side of the connecting plate is movably linked with one end of two connecting rods through a hinge , the other end of the connecting rod is movably linked to one side of the two second sliding plates respectively through hinges, the second sliding plates are slidably connected to the two sliding rods, and the two sliding rods are horizontally and fixedly installed on the inner wall of the connection box On one side, second springs are symmetrically sleeved on both sides of the sliding rod.

As a further solution of the present invention, a mounting groove is provided on one side of the top of the mounting base.

As a further solution of the present invention, a brake pad is arranged on one side of the universal wheel.

As a further solution of the present invention, the number of the concave slide rails is four, and they are fixedly installed on the inner wall of the top end and the inner wall of the bottom end of the box to form a group, and there are two groups in total.

As a further solution of the present invention, the number of the support plates is two, and the bottom end of the support plate is slidably connected to the concave slide rail fixedly connected at the bottom end of the box body through the first sliding plate.

As a further solution of the present invention, the number of the connecting rods is four, and two of them are a group of movable links on one side of the connecting plate.

Beneficial effects of the utility model: the utility model is easy to use, and can effectively dissipate heat to the electrical equipment in the box. The height of the electrical equipment needs to be adjusted to the size of the compartment space in the box, which is convenient for the fixed installation of the electrical equipment. The zero-connection protection device operates stably.

Description of drawings

In order to facilitate the understanding of those skilled in the art, the present utility model will be further described below with reference to the accompanying drawings.

Fig. 1 is the overall front view of the utility model;

Fig. 2 is the front partial cutaway view of the utility model;

Fig. 3 is the top sectional view of the junction box of the utility model;

Fig. 4 is the enlarged view of A area in Fig. 2;

In the figure: 1. Installation base; 2. Box body; 3. Box door; 4. Handle; 5. Disassembly and assembly of heat dissipation components; Wheel; 51, concave slide rail; 52, first slide plate; 53, support plate; 54, chute; 55, slider; 56, partition plate; 57, ventilation pipe; 58, cooling fan; 71, connection box; 72, the first spring; 73, the telescopic rod; 74, the connecting plate; 75, the connecting rod; 76, the second slide plate; 77, the sliding rod; 78, the second spring.

Detailed ways

The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

As shown in Figure 1-4, a zero-connection protection device for a low-voltage power system includes a mounting base 1, a box body 2, a box door 3, a handle 4, a disassembly and assembly heat dissipation component 5, a zero-connection electrical component body 6, and a buffer component 7. The top plate 8 and the universal wheel 9, the top of the mounting base 1 is fixedly installed with the box body 2, one side of the box body 2 is movably connected with the box door 3 through hinges, the box door 3 is provided with a handle 4 on one side, and the top of the box body 2 is installed The top plate 8 is fixedly installed, the four corners of the installation base 1 are fixedly installed with universal wheels 9, and the box body 2 is provided with a dismountable heat dissipation assembly 5;

The disassembly and assembly of the heat dissipation assembly 5 includes the concave slide rail 51, the first slide plate 52, the support plate 53, the chute 54, the slider 55, the partition plate 56, the ventilation pipe 57 and the heat dissipation fan 58, the inner wall of the top end and the inner wall of the bottom end of the box body 2 A concave slide rail 51 is symmetrically and fixedly installed, and a first slide plate 52 is slidably connected to the concave slide rail 51 . The first chute 54, a first sliding block 55 is slidably connected in the first sliding groove 54, the top of the first sliding block 55 is fixedly connected with the bottom side of the partition plate 56, and the top side of the partition plate 56 is fixedly installed with a zero-connecting electrical Element body 6, below the partition plate 56 and located at the bottom end of the box body 2, a ventilation pipe 57 is fixedly installed through the inner wall, one side inner wall of the ventilation pipe 57 is fixedly installed with a cooling fan 58 through a mounting frame, and a buffer is provided inside the top of the mounting base 1 component 7;

The buffer assembly 7 includes a connecting box 71, a first spring 72, a telescopic rod 73, a connecting plate 74, a connecting rod 75, a second sliding plate 76, a sliding rod 77 and a second spring 78. The inner wall of the bottom end of the mounting base 1 is fixedly mounted on one side. The connection box 71, one end of the two first springs 72 is fixedly installed on the top side of the connection box 71, and the other ends of the two first springs 72 are fixedly installed on one side of the outer wall of the bottom end of the box body 2, and the bottom end of the box body 2 is one end. One end of the telescopic rod 73 is fixedly installed on the side, and the other end of the telescopic rod 73 penetrates the top outer wall of the connecting box 71 and is fixedly installed on the top of the connecting plate 74. The connecting plate 74 is slidably connected in the connecting box 71. The movable link has one end of two connecting rods 75, and the other ends of the connecting rods 75 are respectively movably linked to one side of the two second sliding plates 76 through hinges, and the second sliding plates 76 are slidingly connected to the two sliding rods 77, and the two The sliding rods 77 are horizontally and fixedly installed on one side of the inner wall of the connection box 71, and the second springs 78 are symmetrically sleeved on both sides of the sliding rods 77;

Wherein, the top side of the mounting base 1 is provided with a mounting groove;

Among them, one side of the universal wheel 9 is provided with a brake pad;

Among them, the number of the concave slide rails 51 is four, and they are fixedly installed on the inner wall of the top end and the inner wall of the bottom end of the box body 2 to form a group, and there are two groups in total;

Wherein, the number of support plates 53 is two, and the bottom end of the support plate 53 is slidably connected to the concave slide rail 51 fixedly connected to the bottom end of the box body 2 through the first slide plate 52;

Among them, the number of the connecting rods 75 is four, and two of them are a group of active links on one side of the connecting plate 74 .

The working principle of the utility model: when the zero-connection protection device for the low-voltage power system is in use, the box door 3 can be opened through the handle 4, and the concave slide rail 51 and the support plate 53 are slidably connected through the first slide plate 52, which can be convenient Assembling, the chute 54 and the partition 56 are slidably connected by the slider 55, which can also be easily disassembled and assembled. This design can eliminate the need for time-consuming and laborious assembly, which brings great convenience to the installer. At the same time, the chute 54 is provided with Several, the distance between different partitions 56 can be adjusted to realize the setting of different partitions, and different sizes of partitions can be installed according to the size of the electrical equipment. The air is discharged from the box body 2 through the ventilation pipe 57, and the whole device can be moved through the universal wheel 9. There is a brake pad on one side of the universal wheel 9, which can be fixed according to needs. 2. The bottom end compresses the first spring 72, and at the same time, drives the telescopic rod 73 to move downward, and the telescopic rod 73 drives the connecting plate 74 to move downward in the connecting box 71, and the connecting rod 75 drives the second sliding plate 76 under the action of the living hinge The second spring 78 is compressed on the sliding rod 77 to achieve the effect of buffering and shock absorption.

The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details, nor do they limit the invention to only the described embodiments. Obviously, many modifications and variations are possible in light of the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present invention, so that those skilled in the art can well understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims (6)

1. The zero connection protection device for the low-voltage power system is characterized by comprising an installation base (1), a box body (2), a box door (3), a handle (4), a dismounting heat dissipation assembly (5), a zero connection electric element body (6), a buffer assembly (7), a top plate (8) and universal wheels (9), wherein the box body (2) is fixedly installed at the top end of the installation base (1), the box door (3) is movably connected to one side of the box body (2) through a hinge, the handle (4) is arranged at one side of the box door (3), the top plate (8) is fixedly installed at the top end of the box body (2), the universal wheels (9) are fixedly installed at four corners of the installation base (1), and the dismounting heat dissipation assembly (5) is arranged in the box body (2);

the disassembly and assembly heat dissipation assembly (5) comprises a concave sliding rail (51), a first sliding plate (52), a supporting plate (53), sliding grooves (54), sliding blocks (55), a partition plate (56), a ventilation pipe (57) and a heat dissipation fan (58), wherein the concave sliding rail (51) is symmetrically and fixedly installed on the inner wall of the top end and the inner wall of the bottom end of the box body (2), the first sliding plate (52) is connected in the concave sliding rail (51) in a sliding mode, the bottom end of the first sliding plate (52) is fixedly connected with the top end of the supporting plate (53), a plurality of first sliding grooves (54) are fixedly installed on one side of the supporting plate (53), a first sliding block (55) is connected in the first sliding groove (54) in a sliding mode, the top end of the first sliding block (55) is fixedly connected with one side of the bottom end of the partition plate (56), a zero electrical component body (6) is fixedly installed on one side of the top end of the, a heat radiation fan (58) is fixedly installed on the inner wall of one side of the ventilation pipe (57) through an installation frame, and a buffer assembly (7) is arranged inside the top end of the installation base (1);

the buffer assembly (7) comprises a connecting box (71), first springs (72), a telescopic rod (73), a connecting plate (74), connecting rods (75), a second sliding plate (76), a sliding rod (77) and a second spring (78), wherein the connecting box (71) is fixedly installed on one side of the inner wall at the bottom end of the mounting base (1), one ends of the two first springs (72) are fixedly installed on one side of the top end of the connecting box (71), the other ends of the two first springs (72) are fixedly installed on one side of the outer wall at the bottom end of the box body (2), one end of the telescopic rod (73) is fixedly installed on one side of the bottom end of the box body (2), the other end of the telescopic rod (73) penetrates through the outer wall at the top end of the connecting box (71) and is fixedly installed on the top end of the connecting plate (74), the connecting plate (74) is slidably connected in the connecting box (71), and one side, the other end of connecting rod (75) is respectively through hinge active link in one side of two second slide (76), second slide (76) sliding connection is on two slide bars (77), and the equal level fixed mounting of two slide bars (77) is in connecting box (71) inner wall one side, slide bar (77) both sides all symmetry have cup jointed second spring (78).

2. The zero-connection protection device for the low-voltage power system as claimed in claim 1, wherein a mounting groove is formed on one side of the top end of the mounting base (1).

3. Zero-connection protection device for low-voltage power system according to claim 1, characterized in that the universal wheel (9) is provided with a brake pad on one side.

4. The zero-crossing protection device for the low-voltage power system as claimed in claim 1, wherein the number of the concave sliding rails (51) is four, and the concave sliding rails are fixedly installed at the inner walls of the top end and the bottom end of the box body (2) in one group, and the number of the concave sliding rails is two.

5. The zero-crossing protection device for the low-voltage power system as claimed in claim 1, wherein the number of the support plates (53) is two, and the bottom ends of the support plates (53) are slidably connected in concave sliding rails (51) fixedly connected with the bottom end of the box body (2) through first sliding plates (52).

6. The zero-crossing protection device for low-voltage electric power system according to claim 1, wherein the number of the connecting rods (75) is four, and two connecting rods are movably linked in a group at one side of the connecting plate (74).

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