CN203289059U

CN203289059U - Muff-coupling anti-explosion box for intermediate joint of cable

Info

Publication number: CN203289059U
Application number: CN2013203409158U
Authority: CN
Inventors: 叶绿野
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-05-28
Filing date: 2013-05-28
Publication date: 2013-11-13
Anticipated expiration: 2023-05-28

Abstract

The utility model relates to a muff-coupling anti-explosion box for an intermediate joint of a cable. The muff-coupling anti-explosion box comprises a first cylindrical shell, a second cylindrical shell and a locking steel wire. One end of the first cylindrical shell has a reamed hole, and the inner periphery of the reamed hole is circumferentially provided with a first semicircular annular slot. One end surface of the second cylindrical shell is provided with an annual sleeve axially stretching to abut with a circular step surface, and the outer periphery of the annual sleeve is provided with a second semicircular annular slot. An axial spacing hole adaptive to the diameter of the locking steel wire is formed between the first semicircular annular slot and the second semicircular annular slot. A guiding hole communicated with the axial spacing hole is formed in the outer periphery of the first cylindrical shell. The locking steel wire is guided by the guiding hole to penetrate the axial spacing hole, and thus axial spacing between the first cylindrical shell and the second cylindrical shell is further achieved. The anti-explosion box is simple in structure and low in cost.

Description

A kind of socket joint type anti-explosion box for cable middle connector

Technical field

The utility model relates to a kind of explosion-protection equipment of high-voltage cable middle joint, is specifically related to a kind of armored cassette of socket joint type cable intermediate joint.

Background technology

Those skilled in the art should know, anti-explosion box for cable middle connector of the prior art generally comprises two semicylinder shells that connect, and then form the flame proof inner chamber between two semicylinder shells, yet, the anti-explosion box for cable middle connector of this kind structure is because the flange that connects is longer, and then causes the flame proof gap of interface also longer, is used in the bolt use amount of interface position locking armored cassette relatively many, and it is feasible that the distribution of bolt has no rule, and production cost is higher.

Summary of the invention

The purpose of this utility model is to overcome the defect of prior art, and a kind of simple in structure, safe and reliable and socket joint type anti-explosion box for cable middle connector that can effectively reduce production costs is provided.

for achieving the above object, the utility model adopts a kind of socket joint type anti-explosion box for cable middle connector, comprise the first cylindrical shell and the second cylindrical shell and locking steel wire, a wherein end of described the first cylindrical shell and described the second cylindrical shell has respectively the mouth of tightening, the described mouth that tightens has the through hole that passes through for cable penetration, offer reaming in an end that tightens mouth at a distance on described the first cylindrical shell, on the inner peripheral surface of described reaming, along circumferentially offering the first semicircle annular groove, the annular step surface is formed on the bottom of described reaming, on described the second cylindrical shell, at a distance extended axially annulus on its end end face that tightens mouthful, this annulus and described annular step surface form butt, and on the outer circumference surface of described annulus, the position corresponding with the described first semicircle annular groove offers the second semicircle annular groove, the axial limiting hole that between the described first semicircle annular groove and the described second semicircle annular groove, the diameter of formation and described locking steel wire adapts to, offer the pilot hole that is communicated with described axial limiting hole on the outer circumference surface of described the first cylindrical shell, described locking steel wire interts into described axial limiting hole by the guiding transition of described pilot hole, and then form axial limiting between the first cylindrical shell and the second cylindrical shell.

Concrete, on the inwall of described the first cylindrical shell and the second cylindrical shell, the close neighbour is provided with fireprotection layer, describedly tightens close neighbour on mouthful through-hole wall at place and is provided with axial waterstop.

The utility model is by the above-mentioned improvement to prior art, reached the beneficial effect of following two aspects: 1, by with the first cylindrical shell with the second cylindrical shell connects together and by after the locking steel wire axial limiting, with respect to armored cassette of the prior art, cancellation obviously the use of bolt, and simplified assembly process, therefore, when having improved production efficiency, effectively reduce production cost; 2,, owing to being provided with axial waterstop on the through-hole wall tightening the mouth place, prevented that further outside moisture content from entering the armored cassette inner chamber by cable with tightening mouthful gap at place, reached fabulous block-water effect.

Description of drawings

Fig. 1 is the schematic diagram of the utility model embodiment.

Fig. 2 is the front view of the first cylindrical shell in the utility model embodiment.

Fig. 3 is the right view of Fig. 2.

Fig. 4 is the front view of the second cylindrical shell in the utility model embodiment.

Embodiment

as Figure 1-Figure 4, specific embodiment of the utility model is a kind of socket joint type anti-explosion box for cable middle connector, in Fig. 1 as can be known, comprise the first cylindrical shell 1 and the second cylindrical shell 2 and locking steel wire 3, further combined with Fig. 2, Fig. 3 and Fig. 4 are as can be known, a wherein end of described the first cylindrical shell 1 and described the second cylindrical shell 2 has respectively and tightens mouthfuls 10, the described mouth 10 that tightens has the through hole 100 that passes through for cable penetration, offer reaming 12 in an end that tightens mouth 10 at a distance on described the first cylindrical shell 1, on the inner peripheral surface of described reaming 12, along circumferentially offering the first semicircle annular groove 120, annular step surface 121 is formed on the bottom of described reaming 12, on described the second cylindrical shell 2, at a distance on tightening an end end face of mouthfuls 10, it has extended axially annulus 21, this annulus 21 forms butt with described annular step surface 121, and on the outer circumference surface of described annulus 21, the position corresponding with the described first semicircle annular groove 120 offers the second semicircle annular groove 210, the axial limiting hole that between the described first semicircle annular groove 120 and the described second semicircle annular groove 210, the diameter of formation and described locking steel wire 3 adapts to, offer the pilot hole 13 that is communicated with described axial limiting hole on the outer circumference surface of described the first cylindrical shell 1, described locking steel wire 3 interts into described axial limiting hole by the guiding transition of described pilot hole 13, and then form axial limiting between the first cylindrical shell 1 and the second cylindrical shell 2.

In Fig. 1, also obviously as can be known, on the inwall of described the first cylindrical shell 1 and the second cylindrical shell 2, the close neighbour is provided with fireprotection layer 14, and on described through hole 100 inwalls that tighten mouthful 10 places, the close neighbour is provided with axial waterstop 15.

Above demonstration and described basic principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that describes in above-described embodiment and specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.Claim and equivalent thereof that the claimed scope of the utility model is appended define.

Claims

1. socket joint type anti-explosion box for cable middle connector, it is characterized in that: comprise the first cylindrical shell and the second cylindrical shell and locking steel wire, a wherein end of described the first cylindrical shell and described the second cylindrical shell has respectively the mouth of tightening, the described mouth that tightens has the through hole that passes through for cable penetration, offer reaming in an end that tightens mouth at a distance on described the first cylindrical shell, on the inner peripheral surface of described reaming, along circumferentially offering the first semicircle annular groove, the annular step surface is formed on the bottom of described reaming, on described the second cylindrical shell, at a distance extended axially annulus on its end end face that tightens mouthful, this annulus and described annular step surface form butt, and on the outer circumference surface of described annulus, the position corresponding with the described first semicircle annular groove offers the second semicircle annular groove, the axial limiting hole that between the described first semicircle annular groove and the described second semicircle annular groove, the diameter of formation and described locking steel wire adapts to, offer the pilot hole that is communicated with described axial limiting hole on the outer circumference surface of described the first cylindrical shell, described locking steel wire interts into described axial limiting hole by the guiding transition of described pilot hole, and then form axial limiting between the first cylindrical shell and the second cylindrical shell.

2. a kind of socket joint type anti-explosion box for cable middle connector according to claim 1, it is characterized in that: on the inwall of described the first cylindrical shell and the second cylindrical shell, the close neighbour is provided with fireprotection layer, and on the described through-hole wall that tightens mouthful place, the close neighbour is provided with axial waterstop.