CN207282734U - A kind of twin-stage torsion penetrating cable clamp - Google Patents
A kind of twin-stage torsion penetrating cable clamp Download PDFInfo
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- CN207282734U CN207282734U CN201721235730.5U CN201721235730U CN207282734U CN 207282734 U CN207282734 U CN 207282734U CN 201721235730 U CN201721235730 U CN 201721235730U CN 207282734 U CN207282734 U CN 207282734U
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- torque nut
- cable clamp
- torsion
- penetrating cable
- insulation
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- 230000000149 penetrating effect Effects 0.000 title claims abstract description 46
- 238000009413 insulation Methods 0.000 claims abstract description 39
- 239000002184 metal Substances 0.000 claims description 19
- 239000004020 conductor Substances 0.000 abstract description 12
- 238000009434 installation Methods 0.000 abstract description 9
- 238000010276 construction Methods 0.000 description 13
- 238000013461 design Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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Abstract
The utility model discloses a kind of twin-stage torsion penetrating cable clamp, insulated conductor can be attached, continue by aiming to provide one kind, and it can ensure that normal temperature environment and the connection reliability of low temperature environment installation, the failure rate of traditional penetrating cable clamp is effectively reduced, the twin-stage torsion penetrating cable clamp for the security reliability that offers convenience, improves for distribution.Twin-stage torsion penetrating cable clamp includes the connecting screw of insulation upper shell, insulation lower housing shell and connection insulation upper shell and the lower housing shell that insulate, the upper end of connecting screw is equipped with the torque nut component being threadedly coupled, torque nut component includes the upper torque nut being sequentially distributed from top to bottom and lower torque nut, and the moment of torsion of raising one's hat of lower torque nut is more than the moment of torsion of raising one's hat of upper torque nut.
Description
Technical field
It the utility model is related to power cable connection area, and in particular to a kind of twin-stage torsion penetrating cable clamp.
Background technology
It is convenient and quick that the application of penetrating cable clamp is brought to work such as the construction of suspended insulated guide wire, O＆M, maintenance；But
While its main line also to distribution also brought hot defect even failure, many power supply enterprises make penetrating cable clamp for this
Used with being adjusted to only to limit branch line by all fronts use originally, failure rate is reduced with this.So penetrating cable clamp the defects of exist
Where,
First, let us learns about the working method of penetrating cable clamp, and insulation puncture line clamping is the torsion using torque nut
Power extruding insulation upper shell and insulation lower housing shell, promote the piercing blade of insulation upper shell and the lower housing shell that insulate to force and penetrate insulation
Conducting wire, continuous with torque nut rotate, and piercing blade wears out insulating layer, withstand in conducting wire ditch seam；When piercing blade and conducting wire
Contact point when combining closely and reaching certain degree, torque nut is broken off, and installation is complete and contact dot encapsulation, electrically
Effect reaches optimal.It is the kelvin effect using conducting wire, controls piercing blade to penetrate insulated conductor by torque bolt, realizes
Line connection between point and conducting wire in piercing blade；Remove peeling operation from again so as to reach neither injury insulated conductor, complete
Insulated wire subsequent duty.
It can be seen from the above that the torque nut of penetrating cable clamp is the driving force for controlling piercing blade to penetrate insulated conductor, if puncturing
The too deep of blade punctures not only breaks up wire-break power, while also results in the loose contact resistance of conducting wire and become larger；If piercing blade is worn
That pierces is too shallow, and contact resistance is too big, influences to continue effect or is virtual connection.Piercing blade penetrate insulated conductor it is too deep, excessively it is shallow all
It is possible to cause failure；For this reason, to meet These parameters, current penetrating cable clamp producer is manufacturing and designing the process of penetrating cable clamp
In, there are strict requirements to the moment of torsion of raising one's hat of torque nut.
The moment of torsion of raising one's hat of the torque nut of penetrating cable clamp is designed at normal temperatures according to the insulated conductor of standard, i.e.,：It is de-
Cap moment of torsion=extruding force+contact force；
Wherein：
1. moment of torsion of raising one's hat --- the torque nut on penetrating cable clamp is tightened to the moment of torsion of breaking releasing（Unite when design, manufacture
One is constant）；
2. extruding force --- piercing blade penetrates extruding force mutual between insulating layer after insulating layer；
The contact force contacted mutually between 3. contact force --- piercing blade and conductive contact point.
Further, utility model people is drawn by long-term work and research summary：Penetrating cable clamp is in the application of distribution
The failure of appearance is relatively simple：The lighter overheats, burns, it is the most serious burn out, fused wire；Case above is all due to continue
The contact resistance of point is excessive caused.
The reason for retrospect penetrating cable clamp contact resistance becomes larger is more, but main cause is that piercing blade puncture is not in place the most
Caused by；And in place whether the paracentesis depth of the piercing blade of penetrating cable clamp, what is played a decisive role is the de- of torque nut
Cap moment of torsion.Therefore producer during penetrating cable clamp is manufactured and designed, the moment of torsion of raising one's hat to torque bolt be all carried out it is multiple
Verification, confirms feasible rear setting；But utility model people has found raise one's hat moment of torsion of the current penetrating cable clamp producer to torque nut
The reference temperature of setting value is room temperature（20°C-25°C）, i.e., test value under normal temperature environment is designed.
And to have height to have low for the temperature of the practice of construction environment of penetrating cable clamp, in summer, the penetrating cable clamp of installation can almost expire
Foot requires；And when constructing in penetrating cable clamp in the winter time low-temperature construction environment, insulated conductor outer layer insulation skin meeting during due to low temperature
What is become is very hard, and insulating layer hardness reaches peak, and what the raising of insulating layer hardness was brought is the extruding force between insulating layer of threading a needle
Increase, and moment of torsion of raising one's hat is constant（It is unified constant when design, manufacture）, then piercing blade is inevitable with conductive contact point contact power
Reduce { moment of torsion of raising one's hat（→ constant）=extruding force（↑ increase）+ contact force（↓ reduce）}；In this way, in the winter time in low-temperature construction environment
During construction, installed according to the technological requirement of penetrating cable clamp, wire clamp contact force can be caused to reduce, contact force diminishes, and bring is to thread a needle
It is not in place to penetrate conducting wire, causes tie point contact resistance to become larger, resistance, which becomes larger, to be easy for generating heat, and there are security risk.
In conclusion we can be found that the main reason for overheat and failure occur for penetrating cable clamp or because raise one's hat torsion
Square setting is unreasonable, does not consider during site operation caused by the temperature change of external environment.In summer, the penetrating cable clamp of installation is several
It can meet the requirements, the penetrating cable clamp of winter installation is due to puncturing easily failure not in place.
Utility model content
The purpose of this utility model, which is to provide for one kind, can be attached insulated conductor, continue, and can ensure that often
Warm environment and the connection reliability of low temperature environment installation, effectively reduce the failure rate of traditional penetrating cable clamp, offer convenience for distribution,
Improve the twin-stage torsion penetrating cable clamp of security reliability.
The technical solution of the utility model is：
A kind of twin-stage torsion penetrating cable clamp, including insulation upper shell, be arranged on insulation upper shell on upper puncture blade, absolutely
The connection spiral shell of edge lower housing shell, the lower puncture blade being arranged on insulation lower housing shell and connection insulation upper shell and the lower housing shell that insulate
Bar, the upper end of the connecting screw are equipped with the torque nut component being threadedly coupled, and torque nut component is included from top to bottom successively
The upper torque nut of distribution and lower torque nut, upper torque nut are connected as one with lower torque nut, and lower torque nut
Moment of torsion of raising one's hat is more than the moment of torsion of raising one's hat of upper torque nut.
The torque nut component of this programme includes the upper torque nut being connected as one and lower torque nut, and lower torque spiral shell
Female moment of torsion of raising one's hat is more than the moment of torsion of raising one's hat of upper torque nut；When installing the twin-stage torsion penetrating cable clamp of this programme, Ke Yigen
Factually the construction environment temperature on border selects to control piercing blade to puncture into insulation by upper torque nut or lower torque nut
The driving force of conducting wire：
When the temperature of construction environment is greater than or equal to T degrees Celsius of design temperature（Such as summer）：Screwed using wrench
Torque nut, until upper torque nut is broken off；Since the moment of torsion of raising one's hat of upper torque nut is smaller, in high temperature environments
To ensure that piercing blade punctures into insulated conductor, being electrically connected between the point in piercing blade and conducting wire is realized, ensure that connection can
Lean on；Meanwhile and wire-break power can be destroyed to avoid the too depth of piercing blade puncture and cause the loose contact resistance of conducting wire to become
The problem of big.
When the temperature of construction environment is less than T degrees Celsius of design temperature（Such as winter）：Lower torque spiral shell is screwed using wrench
Mother, until lower torque nut is broken off；Since the moment of torsion of raising one's hat of lower torque nut is larger, it is ensured that in low-temperature construction environment
During middle construction, piercing blade punctures into insulated conductor, realizes being electrically connected between the point in piercing blade and conducting wire, ensures connection
Reliably, piercing blade is avoided to puncture too shallow, contact resistance is too big, and the effect or the problem of be virtual connection of influencing to continue.
Thus the twin-stage torsion penetrating cable clamp of this programme, which can be realized, is attached insulated conductor, continues, and can ensure that
Normal temperature environment and the connection reliability of low temperature environment installation, effectively reduce the failure rate of traditional penetrating cable clamp, are brought just for distribution
Profit, improve security reliability.
Preferably, torque nut component further includes the attaching nut positioned at the lower section of lower torque nut, attaching nut with
Lower torque nut is connected as one.The attaching nut of this programme can facilitate the dismounting of the penetrating cable clamp to completing installation.
Preferably, the upper surface of insulation upper shell, which is equipped with upper metal, strengthens connecting plate, upper metal is strengthened on connecting plate
Equipped with connecting screw relative to connecting screw via, the connecting screw deposited connecting screw via, the torque nut
Component is located at the top that upper metal strengthens connecting plate.The structure that this programme structure is conducive to improve twin-stage torsion penetrating cable clamp is strong
Degree.
Preferably, torque nut component and insulation upper shell between connecting screw on be also arranged with gasket.
Preferably, the lower surface of insulation lower housing shell, which is equipped with lower metal, strengthens connecting plate, lower metal is strengthened on connecting plate
Equipped with the matched threaded connection through hole of connecting screw, the lower end of connecting screw through being threadedly coupled through hole, connecting screw with
It is threadedly coupled between threaded connection through hole.This programme structure is conducive to improve the structural strength of twin-stage torsion penetrating cable clamp.
Preferably, upper puncture blade is embedded on insulation upper shell.
Preferably, lower puncture blade is embedded on insulation lower housing shell.
Preferably, upper puncture blade is corresponded with lower puncture blade.
The beneficial effects of the utility model are：Insulated conductor can be attached, continued, and can ensure that normal temperature environment with
The connection reliability of low temperature environment installation, effectively reduces the failure rate of traditional penetrating cable clamp, offers convenience for distribution, improves safety
Reliability.
Brief description of the drawings
Fig. 1 is a kind of structure diagram of the twin-stage torsion penetrating cable clamp of the utility model.
In figure：
Insulate upper shell 1, and upper puncture blade 1.1, upper metal strengthens connecting plate 1.2；
Insulate lower housing shell 2, and lower puncture blade 2.1, lower metal strengthens connecting plate 2.2；
Connecting screw 3；
Torque nut component 4, upper torque nut 4.1, lower torque nut 4.2, attaching nut 4.3；
Gasket 5.
Embodiment
The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings：
As shown in Figure 1, a kind of twin-stage torsion penetrating cable clamp, including insulation upper shell 1, be arranged on it is upper on insulation upper shell
Pierce through blade 1.1, insulation lower housing shell 2, be arranged on insulation lower housing shell on lower puncture blade 2.1 and connection insulation upper shell with absolutely
The connecting screw 3 of edge lower housing shell.Upper puncture blade is embedded on insulation upper shell.Lower puncture blade is embedded in insulation lower housing shell
On.Upper puncture blade is corresponded with lower puncture blade.
The upper surface of insulation upper shell is equipped with upper metal and strengthens connecting plate 1.2.Upper metal strengthen connecting plate be equipped with
Connecting screw relative to connecting screw via.Connecting screw deposited connecting screw via.Set on the lower surface of insulation lower housing shell
There is lower metal to strengthen connecting plate 2.2.Lower metal is strengthened connecting plate and is equipped with and the matched threaded connection through hole of connecting screw.Even
The lower end for connecing screw rod is threadedly coupled through through hole, connecting screw is threadedly coupled with being threadedly coupled between through hole.
The upper end of connecting screw is equipped with the torque nut component 4 being threadedly coupled.Torque nut component is positioned at insulation upper shell
Top.Torque nut component is located at the top that upper metal strengthens connecting plate.Torque nut component strengthens connecting plate with upper metal
Between connecting screw on be also arranged with gasket 5.
Upper torque nut 4.1 that torque nut component includes being sequentially distributed from top to bottom, lower torque nut 4.2 is with being connected spiral shell
Mother 4.3.Upper torque nut, lower torque nut are threadedly coupled with attaching nut with connecting screw.Upper torque nut and lower torque
Nut is connected as one, and attaching nut is connected as one with lower torque nut.The moment of torsion of raising one's hat of lower torque nut is more than upper torque
The moment of torsion of raising one's hat of nut.In the present embodiment：The moment of torsion of raising one's hat of upper torque nut is 32Nm, and the moment of torsion of raising one's hat of lower torque nut is
36-38Nm。
A kind of cable connection construction method using twin-stage torsion penetrating cable clamp, comprises the following steps successively：
First, cardinal margin branch line and insulation branch line are put between insulation upper shell and insulation lower housing shell；
Second, when the temperature of construction environment is greater than or equal to T degrees Celsius of design temperature：Upper torque spiral shell is screwed using wrench
Mother, until upper torque nut is broken off；
When the temperature of construction environment is less than T degrees Celsius of design temperature：Lower torque nut is screwed using wrench, until exerting oneself
Square nut is broken off.Design temperature T values in the present embodiment are 16 degrees Celsius.
Claims (5)
1. a kind of twin-stage torsion penetrating cable clamp, including insulation upper shell, the upper puncture blade being arranged on insulation upper shell, insulation
The connecting screw of lower housing shell, the lower puncture blade being arranged on insulation lower housing shell and connection insulation upper shell and the lower housing shell that insulate,
It is characterized in that the upper end of the connecting screw is equipped with the torque nut component being threadedly coupled, torque nut component include from upper and
Under the upper torque nut that is sequentially distributed and lower torque nut, upper torque nut is connected as one with lower torque nut, and lower torque
The moment of torsion of raising one's hat of nut is more than the moment of torsion of raising one's hat of upper torque nut.
2. twin-stage torsion penetrating cable clamp according to claim 1, it is characterized in that, the torque nut component, which further includes, to be located at
The attaching nut of the lower section of lower torque nut, attaching nut are connected as one with lower torque nut.
3. twin-stage torsion penetrating cable clamp according to claim 1, it is characterized in that, set on the upper surface of the insulation upper shell
There is upper metal to strengthen connecting plate, upper metal strengthen connecting plate be equipped with connecting screw relative to connecting screw via, it is described
Connecting screw deposited connecting screw via, and the torque nut component is located at the top that upper metal strengthens connecting plate.
4. twin-stage torsion penetrating cable clamp according to claim 3, it is characterized in that, the torque nut component adds with upper metal
Gasket is also arranged with connecting screw between strong ties plate.
5. the twin-stage torsion penetrating cable clamp according to claim 1 or 2 or 3 or 4, it is characterized in that, the insulation lower housing shell
Lower surface is equipped with lower metal and strengthens connecting plate, and lower metal is strengthened connecting plate and is equipped with and the matched threaded connection of connecting screw
Through hole, the lower end of connecting screw are threadedly coupled through through hole, connecting screw is threadedly coupled with being threadedly coupled between through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721235730.5U CN207282734U (en) | 2017-09-25 | 2017-09-25 | A kind of twin-stage torsion penetrating cable clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721235730.5U CN207282734U (en) | 2017-09-25 | 2017-09-25 | A kind of twin-stage torsion penetrating cable clamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207282734U true CN207282734U (en) | 2018-04-27 |
Family
ID=61981885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721235730.5U Active CN207282734U (en) | 2017-09-25 | 2017-09-25 | A kind of twin-stage torsion penetrating cable clamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207282734U (en) |
-
2017
- 2017-09-25 CN CN201721235730.5U patent/CN207282734U/en active Active
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