CN206461317U - A kind of anti-explosion terminal box - Google Patents
A kind of anti-explosion terminal box Download PDFInfo
- Publication number
- CN206461317U CN206461317U CN201720159819.1U CN201720159819U CN206461317U CN 206461317 U CN206461317 U CN 206461317U CN 201720159819 U CN201720159819 U CN 201720159819U CN 206461317 U CN206461317 U CN 206461317U
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- China
- Prior art keywords
- external screw
- outside
- nut
- screw rod
- box body
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Abstract
A kind of anti-explosion terminal box, including box body, box body is provided with several inlet wire pipes, inlet wire pipe includes inner nut and external screw rod, inner nut is fixedly connected on box body, box body is stretched out in one end of inner nut, the medial surface of inner nut is in axial direction followed successively by the first inner headed face, step surface, internal thread segment from inside to outside, refer to the direction from the Inside To Outside of box body from inside to outside, the internal diameter of step surface is more than the internal diameter of the first inner headed face, internal thread segment is provided with internal thread, and internal thread segment is the bell mouth shape gradually expanded from inside to outside.Inner nut and external screw rod that the utility model is mutually screwed, by compressing the cylinder of the elastic compression in external screw rod, cable therein is compressed, then inner nut and external screw rod further fixed locking are prevented vibrations in use or the outside elastic force of elastic compression cylinder and disengaged with locking nut.
Description
Technical field
The utility model is related to antiknock device field, more particularly, to a kind of terminal box.
Background technology
Underground coal mine environment there are dust and inflammable gas, run into what any situation was produced when it reaches explosion limit
Electric spark, all easily causes blast, produces serious work safety accident, therefore communication equipment, monitoring instrument, instrument under mine
Table and automation equipment etc. must have explosion prevention function, otherwise cannot be used for underground and install and cable wiring manufacture.
Mine lighting facility and power-equipment are more, in circuit cable distribution process, it is necessary to be used as wiring using terminal box
Midway switching.In common underground terminal box at present, it is poorly sealed to there is point of incoming cables, easily there is the problem of steam enters.
In terminal box also easily produce sparking, if sealing and it is explosion-proof do it is inadequate, just most likely result in explosion accident.
Utility model content
The purpose of this utility model is to provide a kind of anti-explosion terminal box, improves the sealing effectiveness of point of incoming cables, improve wiring
The explosive-proof grade of box.
The technical solution of the utility model is：
A kind of anti-explosion terminal box, including box body, box body are provided with several inlet wire pipes, and inlet wire pipe includes inner nut and outer spiral shell
Bar, inner nut is fixedly connected on box body, and box body is stretched out in one end of inner nut, the medial surface of inner nut in axial direction from it is interior to
The first inner headed face, step surface, internal thread segment are followed successively by outside, refers to the direction from the Inside To Outside of box body, step surface from inside to outside
Internal diameter be more than the internal diameter of the first inner headed face, internal thread segment is provided with internal thread, and internal thread segment gradually expands from inside to outside
Bell mouth shape；External thread section, neck and screw head are sequentially provided with the lateral surface of external screw rod from inside to outside；External thread section is provided with
External screw thread, to be threadedly coupled between the external screw thread of external thread section and the internal thread in internal thread segment, inner one end of external thread section
Circumferentially arranged with more than two strip v notch vs, strip v notch v is axially disposed；The inner side of external screw rod is hollow, inner side connection
The elastic compression cylinder of flexible material, the shape of cross section of elastic compression cylinder is edge on annular, the medial surface of elastic compression cylinder
Direction from inside to outside is sequentially provided with the annular projection of several annulars, the internal diameter of outer one end of medial surface of elastic compression cylinder
More than the internal diameter of inner one end, the internal diameter of the annular projection in elastic compression cylinder in the inner part is less than or equal to the external diameter of cable.
Also include locking nut, locking nut is set on external screw rod, the outer one end of locking nut is provided with snap ring, snap ring card
In the neck of external screw rod, inner one end of locking nut is provided with internal thread, and correspondence is set in the outer one end in the outside of inner nut
There is external screw thread, be threadedly coupled between the internal thread of locking nut and the external screw thread of inner nut.
The internal diameter of the medial surface of elastic compression cylinder becomes larger from inside to outside.
The medial surface of the external screw rod is provided with several clamping slots, the lateral surface of elastic compression cylinder circumferentially arranged with
Several clamping bars；Clamping slot is adapted with the position of clamping bar and shape.
The cross sectional shape of clamping slot and clamping bar is rectangle.
The internal diameter of the annular projection of inner one end is less than the internal diameter of the first inner headed face.
Encapsulation has epoxy resin in the step surface of inner nut.
The axial width of snap ring is less than the axial width of neck.
Tilt angle alpha≤5 ° of the medial surface of elastic compression cylinder.
Inner nut and external screw rod that the utility model is mutually screwed, by compressing the cylinder of the elastic compression in external screw rod, are compressed
Cable therein, is then locked inner nut and external screw rod are further fixed with locking nut, prevent vibrations in use or
The elastic compression outside elastic force of cylinder and disengage.It is multiple-sealed that the utility model makes cable be realized in box body import, effectively prevents
The entrance of steam, prevents that the electric spark in box body from igniting the flammable explosive gas on the outside of box body, realizes explosion-proof and sealing.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is Fig. 1 A-A sectional views；
Fig. 3 is Fig. 1 A-A sectional views（Locking nut is not shown）；
Fig. 4 is the structural representation of external screw rod；
Fig. 5 is Fig. 4 left view.
Embodiment
As Figure 1-5, a kind of anti-explosion terminal box includes box body 1, and box body 1 is provided with several inlet wire pipes 2, inlet wire pipe 2
Including inner nut 3 and external screw rod 4, locking nut 14, inner nut 3 is fixedly connected on box body 1, and box is stretched out in one end of inner nut 3
Body 1, the medial surface of inner nut 3 is in axial direction followed successively by the first inner headed face 5, step surface 6, internal thread segment 7 from inside to outside, from interior
Refer to outer from the direction of the Inside To Outside of box body 1, the internal diameter of step surface 6 is more than the internal diameter of the first inner headed face 5, internal thread segment 7
Internal thread is provided with, internal thread segment 7 is the bell mouth shape gradually expanded from inside to outside, i.e. truncated cone-shaped mouthful；The lateral surface of external screw rod 4
On be sequentially provided with external thread section 8, neck 9 and screw head 10 from inside to outside；External thread section 8 is provided with external screw thread, external thread section 8
It is to be threadedly coupled between external screw thread and the internal thread in internal thread segment 7.As shown in Figure 4,5, inner one end of external thread section 8 is along week
To provided with more than two strip v notch vs 11, single strip v notch v 11 is axially disposed.
When the stress of external thread section 8 is extruded, strip v notch v 11 can be deformed, and be narrowed to contract, can inwardly be extruded.
The inner side of external screw rod 4 is hollow, inner side be connected with elastic material elastic compression cylinder 12, elastic compression cylinder 12 it is transversal
Face is shaped as being sequentially provided with the ring of several annulars along direction from inside to outside on annular, the medial surface of elastic compression cylinder 12
Shape projection 13, the internal diameter of outer one end of medial surface of elastic compression cylinder 12 is more than the internal diameter of inner one end, is so easy to cable
Insertion, the internal diameter of the medial surface of elastic compression cylinder 12 gradually expands from inside to outside.But the internal diameter of outer one end and inner one end
The difference of internal diameter should not be excessive.In Fig. 2, tilt angle alpha≤5 ° of medial surface.
The internal diameter of the annular projection 13 of inner one end is less than the internal diameter of the first inner headed face 5.The electricity of insertion can so be ensured
Cable is extruded into inner nut 3.
Locking nut 14 is set on external screw rod 4, and the outer one end of locking nut 14 is provided with snap ring 15, and snap ring 15 is stuck in outer spiral shell
In the neck 9 of bar 4, inner one end of locking nut 14 is provided with internal thread 16, lateral surface of the correspondence in outer one end of inner nut 3
Provided with external screw thread 17, it is threadedly coupled between the internal thread 16 of locking nut 14 and the external screw thread 17 of inner nut 3.The axial direction of snap ring 15
Width is less than the axial width of neck 9, so could screw-threaded coupling.
The medial surface of external screw rod 4 be provided with several clamping slots 18, if elastic compression cylinder 12 lateral surface circumferentially arranged with
Dry clamping bar 19；Clamping slot 18 is adapted with the position of clamping bar 19 and shape.During installation, clamping bar 19 is first snapped onto into card
In tight groove 18.The cross sectional shape of clamping slot 18 and clamping bar 19 is rectangle.
After installing, encapsulation epoxy resin in the step surface 6 of inner nut 3, between cable and inner nut 3 further
Sealing.
Use process：Insert the cable into elastic compression cylinder 12, be squeezed cable and press against by annular projection 13, then wear
Inner nut 3 is crossed to enter in box body 1.
Then external screw rod 4 is screwed, screw thread is screwed between making the internal thread on the external screw thread and internal thread segment 7 of external thread section 8,
Strip v notch v 11, which shrinks, to narrow, and elastic compression cylinder 12 leading portions deformation is further compressed cable.Then locking nut 14 is screwed
.Due to elastic compression cylinder 12 crimp, make cable enter box body at carried out by multiple annular projections 13 it is multiple close
Envelope, effectively prevents steam from entering, it is to avoid the ionized gas of electric spark passes through the flammable explosive gas that ignited at this.
Claims (9)
1. a kind of anti-explosion terminal box, including box body, box body are provided with several inlet wire pipes, it is characterised in that：Inlet wire pipe includes interior
Nut and external screw rod, inner nut are fixedly connected on box body, and box body is stretched out in one end of inner nut, and the medial surface of inner nut is vertically
Direction is followed successively by the first inner headed face, step surface, internal thread segment from inside to outside, refers to the side from the Inside To Outside of box body from inside to outside
Be more than the internal diameter of the first inner headed face to the internal diameter of, step surface, internal thread segment is provided with internal thread, internal thread segment for from inside to outside by
The big bell mouth shape of flaring；External thread section, neck and screw head are sequentially provided with the lateral surface of external screw rod from inside to outside；External screw thread
Section is provided with external screw thread, to be threadedly coupled between the external screw thread of external thread section and the internal thread in internal thread segment, external thread section
Inner one end is circumferentially arranged with more than two strip v notch vs, and strip v notch v is axially disposed；The inner side of external screw rod is hollow,
Inner side be connected with elastic material elastic compression cylinder, elastic compression cylinder shape of cross section be annular, elastic compression cylinder it is interior
The annular projection of several annulars, the medial surface outer one of elastic compression cylinder are sequentially provided with side along direction from inside to outside
The internal diameter at end is more than the internal diameter of inner one end.
2. anti-explosion terminal box according to claim 1, it is characterised in that：Also include locking nut, locking nut is set in
On external screw rod, the outer one end of locking nut is provided with snap ring, and snap ring is stuck in the neck of external screw rod, and inner one end of locking nut is set
Have an internal thread, correspondence is provided with external screw thread in the outer one end in the outside of inner nut, the internal thread of locking nut and inner nut it is outer
It is threadedly coupled between screw thread.
3. anti-explosion terminal box according to claim 1, it is characterised in that：Elastic compression cylinder medial surface internal diameter from it is interior to
Become larger outside.
4. anti-explosion terminal box according to claim 1, it is characterised in that：The medial surface of the external screw rod is provided with several
Clamping slot, the lateral surface of the elastic compression cylinder is circumferentially arranged with several clamping bars；Position and shape of the clamping slot with clamping bar
Shape is adapted.
5. anti-explosion terminal box according to claim 4, it is characterised in that：The cross sectional shape of clamping slot and clamping bar is square
Shape.
6. anti-explosion terminal box according to claim 1, it is characterised in that：The internal diameter of the annular projection of inner one end is less than the
The internal diameter of one inner headed face.
7. anti-explosion terminal box according to claim 1, it is characterised in that：Encapsulation has asphalt mixtures modified by epoxy resin in the step surface of inner nut
Fat.
8. anti-explosion terminal box according to claim 1, it is characterised in that：The axial width of snap ring is less than the axially wide of neck
Degree.
9. anti-explosion terminal box according to claim 1, it is characterised in that：The tilt angle alpha of the medial surface of elastic compression cylinder
≤5°。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720159819.1U CN206461317U (en) | 2017-02-22 | 2017-02-22 | A kind of anti-explosion terminal box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720159819.1U CN206461317U (en) | 2017-02-22 | 2017-02-22 | A kind of anti-explosion terminal box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206461317U true CN206461317U (en) | 2017-09-01 |
Family
ID=59690440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720159819.1U Expired - Fee Related CN206461317U (en) | 2017-02-22 | 2017-02-22 | A kind of anti-explosion terminal box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206461317U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107546708A (en) * | 2017-10-18 | 2018-01-05 | 周海云 | Anti-explosion cable introducing device |
| CN111431110A (en) * | 2020-05-31 | 2020-07-17 | 叶锋文 | Cable distribution box |
-
2017
- 2017-02-22 CN CN201720159819.1U patent/CN206461317U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107546708A (en) * | 2017-10-18 | 2018-01-05 | 周海云 | Anti-explosion cable introducing device |
| CN111431110A (en) * | 2020-05-31 | 2020-07-17 | 叶锋文 | Cable distribution box |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170901 Termination date: 20180222 |