CN218733021U

CN218733021U - Low-voltage cable junction box

Info

Publication number: CN218733021U
Application number: CN202222955433.5U
Authority: CN
Inventors: 董吉强; 朱华文; 邢文君; 吕庆春; 刘克礼
Original assignee: Yantai Dongyuan Power & Electrical Equipment Co ltd
Current assignee: Yantai Dongyuan Power & Electrical Equipment Co ltd
Priority date: 2022-11-07
Filing date: 2022-11-07
Publication date: 2023-03-24
Anticipated expiration: 2032-11-07

Abstract

The utility model relates to the technical field of junction boxes, and discloses a low-voltage cable junction box, which solves the problems that the existing low-voltage junction box has poor sealing performance and is easy to deflagrate, and comprises a box body, wherein the top end of the box body is provided with a cover body, the cover body is connected with the box body through a plurality of bolts I, the middle position of one side of the box body is provided with an incoming line sealing connector, the middle position of the other side of the box body is provided with an outgoing line sealing connector, the incoming line sealing connector and the outgoing line sealing connector are respectively composed of a cable sleeve, an internal sealing end, an external sealing end and a plurality of bolts II, and the internal sealing end and the external sealing end are respectively composed of an end body, a limiting compression ring, a plurality of connecting arms, an internal sealing ring and an external sealing ring; the low-voltage cable junction box can improve the sealing property between the cable and the cover body and between the cable and the box body, and avoids the occurrence of deflagration caused by combustible gas entering the junction box when the low-voltage cable junction box is applied to working occasions such as mines and the like.

Description

Low-voltage cable junction box

Technical Field

The utility model belongs to the technical field of the terminal box, specifically be a low voltage cable terminal box.

Background

The junction box is used for connecting and branching cables such as power lines, signal lines and the like. The terminal box all obtains the wide application in each field, needs the terminal box to have certain explosion-proof function to some application occasions, if be used for the terminal box in the mine, because have combustible gas in the mine, it is not good when the terminal box leakproofness, detonation takes place easily when combustible gas enters into the terminal box inside, has increased danger, consequently how to improve the explosion-proof performance through the leakproofness that improves the terminal box is the problem that the urgent need be solved.

SUMMERY OF THE UTILITY MODEL

To the above situation, for overcoming prior art's defect, the utility model provides a low voltage cable terminal box, the effectual current low voltage terminal box leakproofness of having solved is not good and take place the problem of deflagration easily.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a low-voltage cable junction box, comprises a box bod, the top of box body is provided with the lid, be connected through a plurality of bolts one between lid and the box body, the intermediate position of box body one side is provided with inlet wire sealing connector, the intermediate position of box body opposite side is provided with outlet wire sealing connector, inlet wire sealing connector and outlet wire sealing connector constitute by cable cutting ferrule, the cable seal cover, the inside seal end, outside seal end and a plurality of bolt two, cable cutting ferrule fixed connection is in the intermediate position of box body both sides, cable sealing ferrule locates the cable and is located the intermediate position of cable cutting ferrule inside, inside seal end headgear locates the cable and connects in the one end that the cable cutting ferrule is close to the box body through a plurality of bolt two, outside seal end is located the cable and is connected in the one end that the box body was kept away from to the cable cutting ferrule through a plurality of bolt two, inside seal end and outside seal end both constitute by end body, spacing clamping ring, a plurality of linking arm, inside seal ring and outside seal ring, spacing clamping ring passes through linking arm fixed connection in the one end of end body, inside seal ring is connected in the inboard side of end body, outside end body.

Preferably, the feeding channel is formed in the end body and the connecting arm, and a sealing plug is arranged at one end of the feeding channel.

Preferably, the outer side limit of cable seal cover is fixed and is provided with a plurality of outer annular protruding circles, and the fixed a plurality of inner annular protruding circles that are provided with of the inboard edge of cable seal cover, outer annular protruding circle and inner annular protruding circle of cable seal cover are the silica gel material.

Preferably, annular grooves are formed in the side edge of the top end of the box body and the side edge of the bottom end of the cover body, a first sealing washer and a second sealing washer are arranged between the box body and the cover body, and insulating explosion-proof isolation layers are arranged on the inner side edges of the box body and the cover body.

Preferably, the top end of the cover body is provided with a plurality of feeding hollow cylinders communicated with the annular groove, and the top end of each feeding hollow cylinder is provided with a sealing cover.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) In operation, through setting up by the cable cutting ferrule, the cable seal cover, the inside seal end, the sealed connector of inlet wire and the sealed connector of being qualified for the next round of competitions that outside seal end and a plurality of two constitutions of bolt and by the end body, spacing clamping ring, a plurality of linking arms, the inside seal end and the outside seal end that inside seal circle and external seal circle constitute can improve the leakproofness that cable and box body are connected, through being provided with the annular groove, seal ring one, seal ring two and insulating explosion-proof isolation layer can improve the leakproofness that lid and box body are connected, thereby can avoid combustible gas to get into the inside of terminal box when the terminal box is applied to dangerous occasions such as mine, and then can improve explosion-proof performance.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.

In the drawings:

fig. 1 is a schematic structural view of the low-voltage cable junction box of the present invention;

FIG. 2 is a top view of the box body of the present invention;

FIG. 3 is a disassembled cross-sectional view of the sealing connector of the present invention;

fig. 4 is a cross-sectional view of the sealing end of the present invention;

in the figure: 1. a box body; 2. a cover body; 3. a first bolt; 4. a wire inlet sealing connector; 5. the outgoing line is connected with a sealing connector; 6. a cable ferrule; 7. a cable gland; 8. an internal sealing end; 9. an outer sealing end; 10. a second bolt; 11. an end body; 12. limiting a compression ring; 13. a connecting arm; 14. an inner seal ring; 15. an outer seal ring; 16. a feed channel; 17. a sealing plug; 18. an outer annular bead; 19. an inner annular convex ring; 20. an annular groove; 21. sealing washer one; 22. a second sealing washer; 23. an insulating explosion-proof isolation layer; 24. feeding a hollow cylinder; 25. and (7) sealing the cover.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below 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.

The low-voltage cable junction box comprises a box body 1, a cover body 2 is arranged at the top end of the box body 1, the cover body 2 is connected with the box body 1 through a plurality of bolts one 3, an incoming wire sealing connector 4 is arranged at the middle position of one side of the box body 1, an outgoing wire sealing connector 5 is arranged at the middle position of the other side of the box body 1, the incoming wire sealing connector 4 and the outgoing wire sealing connector 5 are both formed by a cable sleeve 6, a cable gland 7, an internal sealing end 8, an external sealing end 9 and a plurality of bolts two 10, the cable sleeve 6 is fixedly connected to the middle positions of two sides of the box body 1, the cable gland 7 is sleeved on a cable and is located at the middle position inside the cable sleeve 6, the internal sealing end 8 is sleeved on the cable and is connected to one end, close to the box body 1, of the cable sleeve 6, the external sealing end 9 is sleeved on the cable sleeve and is connected to one end, far away from the box body 1, of the cable sleeve 6, the internal sealing end 8 and the external sealing end 9 are both connected to one end of the cable sleeve 11, a limiting ring 12, a plurality of an external sealing ring 13, the external sealing ring 11 is connected to an end ring 11 of the external sealing ring 11, and an end ring 11 of the limiting ring 11;

as shown in fig. 1 to 4, a feeding channel 16 is formed inside each of the end body 11 and the connecting arm 13, and a hot-melt sealant can be injected between the end body 11 and the limiting compression ring 12, so that the sealing performance can be improved, a sealing plug 17 is arranged at one end of each of the feeding channels 16, a plurality of outer annular convex rings 18 are fixedly arranged on the outer side edge of each of the cable sealing sleeves 7, a plurality of inner annular convex rings 19 are fixedly arranged on the inner side edge of each of the cable sealing sleeves 7, and the sealing performance between each of the cable sealing sleeves 7 and the cable sleeve 6 can be improved, each of the cable sealing sleeves 7, the outer annular convex rings 18 and the inner annular convex rings 19 is made of a silica gel material, annular grooves 20 are formed on the side edges of the top end of the box body 1 and the bottom end of the cover body 2, a first sealing washer 21 and a second sealing washer 22 are arranged between the box body 1 and the cover body 2, insulating and an explosion-proof isolation layer 23 are arranged on the inner side edges of the box body 1 and the cover body 2, a plurality of feeding hollow cylinders 24 communicated with the annular grooves 20 are arranged on the top end of the cover body 2, a hot-melt sealant can be injected into the annular grooves 20, and a sealing cover 25 is arranged on the top end of the feeding hollow cylinders 24;

during the use, pass inlet wire sealing connector 4 and outlet wire sealing connector 5 with the cable, make the cable pass outside seal end 9 in proper order, cable seal cover 7, cable cutting ferrule 6 and inside seal end 8, then alternate cable seal cover 7 into the inside of cable cutting ferrule 6, with inside seal end 8 and the one end chucking and the fixed connection of cable cutting ferrule 6, then with outside seal end 9 and the other end chucking and the fixed connection of cable cutting ferrule 6, when connecting, spacing clamping ring 12 extrudes the both ends of cable seal cover 7, make interior annular protruding circle 19 compress tightly with the cable, outer annular protruding circle 18 compresses tightly with the inside wall of cable cutting ferrule 6, thereby can improve the leakproofness of connecting, there is the space between spacing 12 and the end body 11 this moment, then pour into between spacing 12 and the end body 11 with hot melt sealed glue through feedstock channel 16, make hot melt sealed glue fill the space, can further improve the leakproofness of connecting, after the cable installation is accomplished, cover 2, can improve the leakproofness between clamping ring 2 and the box body 1 through sealed ring one seal ring 21 and two sealed seal ring 22, then to annular terminal box body 24 through the feeding, make hot melt sealed glue fill in the sealed gas body and can further improve the deflagration sealed gas connection of the sealed lid body and can take place.

In operation, through setting up by the cable cutting ferrule, the cable seal cover, the inside seal end, the sealed connector of inlet wire and the sealed connector of being qualified for the next round of competitions that outside seal end and a plurality of two constitution of bolt and by the end body, spacing clamping ring, a plurality of linking arm, the inside seal end and the outside seal end that inside seal circle and external seal circle constitute can improve the leakproofness that cable and box body are connected, through being provided with the annular groove, seal ring one, seal ring two and insulating explosion-proof isolation layer can improve the leakproofness that lid and box body are connected, thereby can avoid combustible gas to get into the inside of terminal box when the terminal box is applied to dangerous occasions such as mine, and then can improve explosion-proof performance.

Claims

1. A low-voltage cable junction box, comprising a box body (1), characterized in that: the cable clamping device is characterized in that a cover body (2) is arranged at the top end of the box body (1), the cover body (2) is connected with the box body (1) through a plurality of bolts I (3), a wire inlet sealing connector (4) is arranged at the middle position of one side of the box body (1), a wire outlet sealing connector (5) is arranged at the middle position of the other side of the box body (1), the wire inlet sealing connector (4) and the wire outlet sealing connector (5) are respectively composed of a cable clamping sleeve (6), a cable sealing sleeve (7), an inner sealing end (8), an outer sealing end (9) and a plurality of bolts II (10), the cable clamping sleeve (6) is fixedly connected to the middle positions of the two sides of the box body (1), the cable sealing sleeve (7) is sleeved on a cable and is located at the middle position inside the cable clamping sleeve (6), the inner sealing end (8) is sleeved on the cable and is connected to one end, close to the box body (1), of the cable clamping sleeve (6) through the plurality of bolts II (10), the outer sealing end (9) is sleeved on the cable and is connected to one end, a plurality of inner sealing rings (12), a limiting sealing ring (12) and a plurality of connecting arms (12), the limiting compression ring (12) is fixedly connected to one end of the end body (11) through a connecting arm (13), the inner sealing ring (14) is connected to the inner side of the end body (11), and the outer sealing ring (15) is connected to the outer side of the end body (11).

2. A low voltage cable junction box according to claim 1, wherein: feed channel (16) have all been seted up to the inside of end body (11) and linking arm (13), and the one end of feed channel (16) is provided with sealing plug (17).

3. A low voltage cable junction box according to claim 1, wherein: the outer side edge of the cable sealing sleeve (7) is fixedly provided with a plurality of outer annular convex rings (18), the inner side edge of the cable sealing sleeve (7) is fixedly provided with a plurality of inner annular convex rings (19), and the cable sealing sleeve (7), the outer annular convex rings (18) and the inner annular convex rings (19) are all made of silica gel.

4. A low voltage cable junction box according to claim 1, wherein: annular groove (20) have all been seted up to the side on box body (1) top and the side of lid (2) bottom, are provided with seal ring one (21) and seal ring two (22) between box body (1) and lid (2), and the inboard side of box body (1) and lid (2) all is provided with insulating explosion-proof isolation layer (23).

5. A low-voltage cable junction box according to claim 4, wherein: the top end of the cover body (2) is provided with a plurality of feeding hollow cylinders (24) communicated with the annular groove (20), and the top end of each feeding hollow cylinder (24) is provided with a sealing cover (25).