CN207587986U - A kind of penetrating cable clamp - Google Patents
A kind of penetrating cable clamp Download PDFInfo
- Publication number
- CN207587986U CN207587986U CN201721238560.6U CN201721238560U CN207587986U CN 207587986 U CN207587986 U CN 207587986U CN 201721238560 U CN201721238560 U CN 201721238560U CN 207587986 U CN207587986 U CN 207587986U
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- torque
- torque nut
- nut
- cable clamp
- penetrating cable
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- 230000000149 penetrating effect Effects 0.000 title claims abstract description 48
- 238000009413 insulation Methods 0.000 claims abstract description 42
- 239000004020 conductor Substances 0.000 abstract description 13
- 238000009434 installation Methods 0.000 abstract description 12
- 238000010276 construction Methods 0.000 description 13
- 230000000694 effects Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000013461 design Methods 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 penetrating cable clamps, insulated conductor can be attached, continue by being intended 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 penetrating cable clamp for the security reliability that offers convenience, improves for distribution.Penetrating cable clamp include insulation upper shell, insulation lower housing, for connect insulation upper shell with insulate lower housing the first connecting screw and for connect insulation upper shell and insulation lower housing the second connecting screw.The upper end of first connecting screw is equipped with the first torque nut component, the upper end of second connecting screw is equipped with the second torque nut component, first torque nut component includes the first torque nut, second torque nut component includes the second torque nut, and the torque of raising one's hat of the first torque nut is more than the torque of raising one's hat of the second torque nut.
Description
Technical field
The utility model is related to power cable connection areas, and in particular to a kind of 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
It also also brought hot defect even failure to the main line of distribution simultaneously, and many power supply enterprises make penetrating cable clamp thus
It is used with only limit branch line is adjusted to 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 push the piercing blade of insulation upper shell and the lower housing that insulate to force and penetrate insulation
Conducting wire, with the continuous rotation of torque nut, piercing blade wears out insulating layer, withstands 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 best.It is the kelvin effect using conducting wire, piercing blade is controlled to penetrate insulated conductor by torque bolt, realized
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 that the torque nut of penetrating cable clamp is the driving force that piercing blade is controlled to penetrate insulated conductor, if puncturing
The too deep of blade punctures not only breaks up wire-break power, while also result 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 that cause failure；For this purpose, to meet These parameters, current penetrating cable clamp producer is in the process for manufacturing and designing penetrating cable clamp
In, there are strict requirements to the torque of raising one's hat of torque nut.
The torque 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 torque=extruding force+contact force；
Wherein：
1. torque of raising one's hat --- the torque nut on penetrating cable clamp is tightened to the torque of breaking releasing（It unites 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 summarized with research by long-term work and obtained：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 continuing
The contact resistance of point is excessive caused.
The reason of 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 torque.Therefore during penetrating cable clamp is manufactured and designed, the torque of raising one's hat to torque bolt is all to carry out repeatedly for producer
Verification confirms feasible rear setting；But utility model people has found raise one's hat torque 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 requirement；And when constructing in penetrating cable clamp in winter 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 torque 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 { torque of raising one's hat（→ constant）=extruding force（↑ increase）+ contact force（↓ reduce）}；In this way, in winter in low-temperature construction environment
It during construction, is installed according to the technological requirement of penetrating cable clamp, wire clamp contact force can be caused to reduce, contact force becomes smaller, and bring is to thread a needle
It is not in place to penetrate conducting wire, tie point contact resistance is caused to become larger, resistance, which becomes larger, to be easy for generating heat, and there are security risks.
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 susceptible to failure since puncture is 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 penetrating cable clamp of security reliability.
The technical solution of the utility model is：
A kind of penetrating cable clamp, including insulation upper shell, the upper pierce the blade being arranged on insulation upper shell, insulation lower housing
And the lower pierce the blade on insulation lower housing is arranged on, it further includes and connects for connecting insulation upper shell with the first of the lower housing that insulate
Screw rod and the second connecting screw for connecting insulation upper shell and the lower housing that insulate are connect, the upper end of first connecting screw is set
There is the first torque nut component of threaded connection, the upper end of the second connecting screw is equipped with the second torque nut group being threadedly coupled
Part, the first torque nut component include the first torque nut, and the second torque nut component includes the second torque nut,
The torque of raising one's hat of first torque nut is more than the torque of raising one's hat of the second torque nut.
The penetrating cable clamp of this programme includes the first torque nut and the second torque nut, and the torsion of raising one's hat of the first torque nut
Square is more than the torque of raising one's hat of the second torque nut, can be according to practical construction environment in the penetrating cable clamp for installing this programme
Temperature selects the driving force for piercing blade being controlled to puncture into insulated conductor by the first torque nut or the second torque nut：
When the temperature of construction environment is greater than or equal to set temperature T（Such as summer）：The second torque is tightened using wrench
Nut, until the second torque nut is broken off；Since the torque of raising one's hat of the second torque nut is smaller, under high temperature environment
To ensure that piercing blade punctures into insulated conductor, realize being electrically connected between point and conducting wire in piercing blade, ensure that connection can
It leans on；Meanwhile and wire-break power can be destroyed to avoid the too depth of piercing blade puncture and the loose contact resistance of conducting wire is caused to become
The problem of big.
When the temperature of construction environment is less than set temperature T（Such as winter）：The first torque nut is tightened using wrench, directly
It is broken off to the first torque nut；Since the torque of raising one's hat of the first 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 point and conducting wire in piercing blade, 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 penetrating cable clamp of this programme, which can be realized, is attached insulated conductor, continues, and can ensure that normal temperature environment
With the connection reliability of low temperature environment installation, the failure rate of traditional penetrating cable clamp is effectively reduced, offers convenience for distribution, improve peace
Full reliability.
Preferably, the first torque nut component further includes the first attaching nut positioned at the lower section of the first torque nut,
First attaching nut is connected as one with the first torque nut.When the installation that penetrating cable clamp is completed by the first torque nut component
When, first attaching nut of this programme can facilitate the dismounting of the penetrating cable clamp to completing installation.
Preferably, the second torque nut component further includes the second attaching nut positioned at the lower section of the second torque nut,
Second attaching nut is connected as disome with the second torque nut.When the installation that penetrating cable clamp is completed by the second torque nut component
When, second attaching nut of this programme can facilitate the dismounting of the penetrating cable clamp to completing installation.
Preferably, the first torque nut component and insulation upper shell between the first connecting screw on be also arranged with first
Gasket.
Preferably, the second torque nut component and insulation upper shell between the second connecting screw on be also arranged with second
Gasket.
Preferably, upper pierce the blade is embedded on insulation upper shell.
Preferably, lower pierce the blade is embedded on insulation lower housing.
Preferably, upper pierce the blade is corresponded with lower pierce the blade.
The beneficial effects of the utility model are：Insulated conductor can be attached, continued, and can ensure that hot environment,
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 improves security reliability.
Description of the drawings
Fig. 1 is a kind of structure diagram of the penetrating cable clamp of the utility model.
Fig. 2 is a kind of cross-sectional view that A-A goes out in Fig. 1.
In figure：
Insulate upper shell 1, upper pierce the blade 1.1；
Insulate lower housing 2, lower pierce the blade 2.1；
First connecting screw 3；
Second connecting screw 4；
First torque nut component 5, the first torque nut 5.1, the first attaching nut 5.2；
First gasket 6；
Second torque nut component 7, the second torque nut 7.1, the second attaching nut 7.2；
Second gasket 8.
Specific embodiment
The utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings：
As shown in Figure 1 and Figure 2, a kind of penetrating cable clamp, including insulation upper shell 1, the upper puncture being arranged on insulation upper shell
Blade 1.1, insulation lower housing 2, be arranged on insulation lower housing on lower pierce the blade 2.1, for connect insulation upper shell with absolutely
First connecting screw 3 of edge lower housing and the second connecting screw 4 for connecting insulation upper shell and the lower housing that insulate.First connects
Screw rod is connect to be mutually parallel with the second connecting screw.Upper pierce the blade is embedded on insulation upper shell.Lower pierce the blade is embedded in absolutely
On edge lower housing.Upper pierce the blade is corresponded with lower pierce the blade.
The upper end of first connecting screw is equipped with the first torque nut component 5 being threadedly coupled.First torque nut component with
The first gasket 6 is also arranged on the first connecting screw between insulation upper shell.First torque nut component includes the first torque
Nut 5.1 and the first attaching nut 5.2 positioned at the lower section of the first torque nut.First attaching nut connects with the first torque nut
It is connected in one.First attaching nut is threadedly coupled with the first torque nut with the first connecting screw.
The upper end of second connecting screw is equipped with the second torque nut component 7 being threadedly coupled.Second torque nut component with
The second gasket 8 is also arranged on the second connecting screw between insulation upper shell.Second torque nut component includes the second torque
Nut 7.1 and the second attaching nut 7.2 positioned at the lower section of the second torque nut, the second attaching nut connect with the second torque nut
It is connected in one.Second attaching nut is threadedly coupled with the second torque nut with the second connecting screw.
The torque of raising one's hat of first torque nut is more than the torque of raising one's hat of the second torque nut.In the present embodiment：First torque
The torque of raising one's hat of nut is 36-38Nm, and the torque of raising one's hat of the second torque nut is 30-32Nm.
A kind of cable connection construction method using penetrating cable clamp includes the following steps successively：
First, cardinal margin branch line and insulation branch line are put between insulation upper shell and insulation lower housing.
Second, when the temperature of construction environment is greater than or equal to set temperature T：The second torque nut is tightened using wrench,
Until the second torque nut is broken off.
When the temperature of construction environment is less than set temperature T：The first torque nut is tightened using wrench, until the first torque
Nut is broken off.
Set temperature T in the present embodiment is 16 degrees Celsius.
Above the unit of set temperature T is degree Celsius.
Claims (5)
1. a kind of penetrating cable clamp, including insulation upper shell, the upper pierce the blade being arranged on insulation upper shell, insulation lower housing and
The lower pierce the blade being arranged on insulation lower housing, it is characterized in that, it further includes to connect insulation upper shell and insulation lower housing
The first connecting screw and for connect insulation upper shell with insulate lower housing the second connecting screw, first connecting screw
Upper end be equipped with the first torque nut component being threadedly coupled, the upper end of the second connecting screw is equipped with the second torque being threadedly coupled
Nut assembly,
The first torque nut component includes the first torque nut, and the second torque nut component includes the second torque spiral shell
Mother, the torque of raising one's hat of first torque nut are more than the torque of raising one's hat of the second torque nut.
2. penetrating cable clamp according to claim 1, it is characterized in that, the first torque nut component is further included positioned at first
First attaching nut of the lower section of torque nut, the first attaching nut are connected as one with the first torque nut.
3. penetrating cable clamp according to claim 1, it is characterized in that, the second torque nut component is further included positioned at second
Second attaching nut of the lower section of torque nut, the second attaching nut are connected as one with the second torque nut.
4. according to the penetrating cable clamp described in claims 1 or 2 or 3, it is characterized in that, on the first torque nut component and insulation
The first gasket is also arranged on the first connecting screw between housing.
5. according to the penetrating cable clamp described in claims 1 or 2 or 3, it is characterized in that, on the second torque nut component and insulation
The second gasket is also arranged on the second connecting screw between housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721238560.6U CN207587986U (en) | 2017-09-25 | 2017-09-25 | A kind of penetrating cable clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721238560.6U CN207587986U (en) | 2017-09-25 | 2017-09-25 | A kind of penetrating cable clamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207587986U true CN207587986U (en) | 2018-07-06 |
Family
ID=62727637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721238560.6U Active CN207587986U (en) | 2017-09-25 | 2017-09-25 | A kind of penetrating cable clamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207587986U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107706558A (en) * | 2017-09-25 | 2018-02-16 | 国网浙江省电力公司衢州供电公司 | The cable connection construction method of penetrating cable clamp and the application penetrating cable clamp |
-
2017
- 2017-09-25 CN CN201721238560.6U patent/CN207587986U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107706558A (en) * | 2017-09-25 | 2018-02-16 | 国网浙江省电力公司衢州供电公司 | The cable connection construction method of penetrating cable clamp and the application penetrating cable clamp |
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