CN-224218062-U - Explosion-proof junction box with wire inlet and outlet protection function

CN224218062UCN 224218062 UCN224218062 UCN 224218062UCN-224218062-U

Abstract

The utility model discloses an explosion-proof junction box with wire inlet and outlet protection, which comprises an upper box body and a label plate, wherein the upper box body and the label plate are fixedly connected through a connecting piece, semicircular wire holes are formed in the side surfaces of the upper box body and the label plate, and when the upper box body and the label plate are closed, the two semicircular wire holes are matched to form a circular wire hole. The utility model can protect the line passing through the circular line hole by arranging the line protection structure, and the arc seats are arranged in pairs, so that the line can be easily installed when the upper box body and the label plate are separated, the two outer arc sheets are closed when the upper box body and the label plate are closed, the two inner arc sheets are inserted into the arc supporting sheets, the inner arc sheets move along the inner sides of the arc supporting sheets by screwing the outer arc sheets, the arc sliding blocks are gradually pushed, and the arc elastic fold sheets are gradually compressed and inwards extruded in the pushing process of the arc sliding blocks, thereby improving the installation tightness of the line, preventing dust from entering and avoiding explosion caused by dust accumulation.

Inventors

ZHOU HONGLIANG
WANG HUAIYU
ZHANG JUNYE
LIU JING
LI YUZHE
GAO LI
JIN HUIXU
GAO YUN
LIU LIHUA
GAO NAXIN
QI MEILI

Assignees

辽宁理工职业大学

Dates

Publication Date: 20260508
Application Date: 20250529

Claims (7)

1. The explosion-proof junction box is characterized by comprising an upper box body (1) and a lower box body (5), wherein the upper box body (1) and the lower box body (5) are fixedly connected through a connecting piece, semicircular wire holes are formed in the side surfaces of the upper box body (1) and the lower box body (5), and when the upper box body (1) and the lower box body (5) are closed, the two semicircular wire holes are matched to form a circular wire hole; The side of the upper box body (1) and the side of the lower box body (5) are provided with a circuit protection structure, and the circuit protection structure comprises: The arc seats (21) are arranged on the outer sides of semicircular line holes of the upper box body (1) and the lower box body (5) in pairs, one end, far away from the upper box body (1), of each arc seat (21) is fixedly provided with an arc supporting piece (15), threads are arranged on the arc supporting pieces (15), the threads of the two arc supporting pieces (15) are matched, when the upper box body (1) and the lower box body (5) are closed, the two arc seats (21) of each pair are matched to form a closed-loop structure, and the threads of the arc supporting pieces (15) are matched to form complete continuous threads; the arc-shaped elastic fold piece (13), one end of the arc-shaped elastic fold piece (13) is fixed on the outer wall of one side of the arc seat (21), and V-shaped folds are arranged on the arc-shaped elastic fold piece (13); The arc-shaped sliding blocks (17) slide on the inner sides of the arc-shaped supporting plates (15), and the arc-shaped sliding blocks (17) are fixed at one ends of the arc-shaped elastic folding plates (13), when the upper box body (1) and the lower box body (5) are closed, the folding positions of the two arc-shaped elastic folding plates (13) are adapted, and the two arc-shaped sliding blocks (17) form a closed loop structure; The compressing piece is detachably arranged on the arc-shaped supporting piece (15) and used for compressing the arc-shaped sliding block (17) to the arc seat (21); The pressing member includes: the inner arc piece (11), the inner arc piece (11) is in an arc structure matched with the inner side of the arc supporting piece (15); The outer arc piece (10), outer arc piece (10) are the arc structure with arc supporting piece (15) outside looks adaptation, and outer arc piece (10) one side is connected with interior arc piece (11) through connection piece (19), and one side that outer arc piece (10) and connection piece (19) are close to interior arc piece (11) is provided with the screw thread with arc supporting piece (15) looks adaptation, and when two outer arc pieces (10) were closed, two outer arc pieces (10) cooperation formed annular structure.
2. The explosion-proof junction box with the wire inlet and outlet protection according to claim 1, wherein the side surfaces of the outer arc pieces (10) are fixedly provided with side brackets (18), and the side brackets (18) of the two outer arc pieces (10) are fixedly connected through screws; Connecting columns (16) are arranged at two ends of one arc-shaped sliding block (17), insertion holes are formed in two ends of the other arc-shaped sliding block (17), and when the two arc-shaped sliding blocks (17) are closed, the connecting columns (16) are inserted into the insertion holes.
3. The explosion-proof junction box of business turn over line protection according to claim 2, characterized in that, draw-in groove (14) have been seted up on arc seat (21), arc backing sheet (15) outside detachable installs elastic gum cover (4), and elastic gum cover (4) bottom is provided with the bar mouth, and elastic gum cover (4) are non-closed loop structure, and one end of elastic gum cover (4) is provided with card strip (12), and elastic gum cover (4) are through card strip (12) detachable install in draw-in groove (14) of arc seat (21).
4. The explosion-proof junction box for line access protection according to claim 1, wherein the connecting piece comprises a connecting plate (7), the connecting plate (7) is fixed on the lower box body (5), the connecting frame (8) is fixed on the side face of the upper box body (1), and when the upper box body (1) is installed on the lower box body (5), the connecting plate (7) is fixed on the connecting frame (8) through a fixing screw piece (9).
5. The explosion-proof junction box for line access protection according to claim 1, wherein an elastic baffle (20) is fixed on the outer side of the top of the lower box body (5), and the elastic baffle (20) is positioned on the outer side of the junction between the upper box body (1) and the lower box body (5) when the upper box body (1) is mounted on the lower box body (5).
6. The explosion-proof junction box for line access protection according to claim 1, wherein a mounting plate (6) is fixed at the bottom of the lower box body (5), and a waist-shaped hole is arranged on the mounting plate (6).
7. An explosion-proof junction box with line access protection according to any one of claims 1-6, wherein a plurality of mounting grooves (3) are arranged on the outer wall of one side of the upper box body (1), the mounting grooves (3) are positioned above the line holes, and a lower box body (5) is detachably arranged in the mounting grooves (3).

Description

Explosion-proof junction box with wire inlet and outlet protection function Technical Field The utility model relates to the technical field of junction boxes, in particular to an explosion-proof junction box with wire inlet and outlet protection. Background In the field of industrial explosion protection, an explosion-proof junction box with wire inlet and outlet protection is a key component for ensuring safe operation of electrical equipment. In particular in flammable and explosive environments, such as petroleum, chemical industry, coal mine and other places, any electrical fault can cause serious explosion accidents. Therefore, the design of the explosion-proof junction box must strictly follow the explosion-proof standard, ensuring good tightness, dust-proof and explosion-proof properties. Traditional explosion-proof junction box often adopts simple line hole or sealing washer to protect in business turn over line design, and these designs can prevent spark and high temperature gas to leak to a certain extent, but in long-term use, because the influence of frequent plug and external environment of circuit, lead to sealing performance to descend easily, and then make dust and moisture invade, increase explosion risk. In addition, the traditional design is also more complicated in the process of line adjustment and maintenance, and the whole junction box needs to be disassembled or special tools are used, so that the working efficiency is reduced. Through retrieving, chinese patent application number is CN 202410341070.7's application scheme discloses a junction box for industrial control, the power distribution box comprises a box body, the wiring hole has been seted up to the surface of box, the surface mounting of wiring hole has threading fixed establishment, threading fixed establishment includes fixed box, solid fixed ring, stretches out frame and diagonal bar, gu fixed ring sets up in the inside wall of fixed box, the upper surface rotation that stretches out the frame is provided with the diagonal bar, one side of diagonal bar is provided with inside release mechanism. The junction box in the document has the defects that the threading fixing mechanism has poor sealing performance, is of a closed-loop structure and is inconvenient to install and adjust. Disclosure of utility model The utility model aims to solve the defects in the prior art and provides an explosion-proof junction box with a wire inlet and outlet protection function. In order to achieve the above purpose, the present utility model adopts the following technical scheme: The explosion-proof junction box comprises an upper box body and a lower box body, wherein the upper box body and the lower box body are fixedly connected through a connecting piece, semicircular wire holes are formed in the side surfaces of the upper box body and the lower box body, and when the upper box body and the lower box body are closed, the two semicircular wire holes are matched to form a circular wire hole; The upper box and the lower box side are provided with circuit protection structure, circuit protection structure includes: the arc seats are arranged outside semicircular line holes of the upper box body and the lower box body in pairs, an arc supporting piece is fixed at one end of the arc seat far away from the upper box body, threads are arranged on the arc supporting piece, the threads of the two arc supporting pieces are matched, when the upper box body and the lower box body are closed, the two arc seats of each pair are matched to form a closed-loop structure, and the threads of the arc supporting pieces are matched to form complete continuous threads; The arc-shaped elastic fold piece is provided with a V-shaped fold, and one end of the arc-shaped elastic fold piece is fixed on the outer wall of one side of the arc seat; When the upper box body and the lower box body are closed, the folding positions of the two arc-shaped elastic folding sheets are adapted, and the two arc-shaped sliding blocks form a closed loop structure; The compressing piece is detachably arranged on the arc-shaped supporting piece and used for compressing the arc-shaped sliding block to the arc seat; The pressing member includes: The inner arc piece is in an arc structure matched with the inner side of the arc supporting piece; The outer arc piece is the arc structure with arc supporting piece outside looks adaptation, and outer arc piece one side is connected with the inner arc piece through the connection piece, and one side that outer arc piece and connection piece are close to the inner arc piece is provided with the screw thread with arc supporting piece looks adaptation, and when two outer arc pieces were closed, two outer arc pieces cooperation formed annular structure. As a still further proposal of the utility model, the side surfaces of the outer arc pieces are fixed with side brackets, and the side brackets of the two outer arc pieces are connected and fixed