CN201812558U - 'SZ'-shaped copper wire shielding layer of wire and cable - Google Patents
'SZ'-shaped copper wire shielding layer of wire and cable Download PDFInfo
- Publication number
- CN201812558U CN201812558U CN2010202052525U CN201020205252U CN201812558U CN 201812558 U CN201812558 U CN 201812558U CN 2010202052525 U CN2010202052525 U CN 2010202052525U CN 201020205252 U CN201020205252 U CN 201020205252U CN 201812558 U CN201812558 U CN 201812558U
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- copper wire
- cable
- wire
- shielding layer
- shielding
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Abstract
The utility model relates to an 'SZ'-shaped copper wire shielding layer of a wire and a cable. The shielding layer comprises a copper wire (2) of the wire and the cable, wherein the copper wire (2) is made from a soft copper wire or a tin-plated soft copper wire used by an electrician, and is twisted and discretely coiled on the wire and the cable to be taken as a shielding layer (1) along an 'SZ' direction; the 'SZ' direction means that one section of a twisted pitch of the copper wire is twisted clockwise while another section is twisted anticlockwise; the clockwise degree and the anticlockwise degree of a twisting angle are both 270 degrees; and the twisted pitch is 15 times to 20 times of the outer diameter of a shielding line core. The 'SZ'-shaped copper wire shielding layer can solve the problem that hidden danger is generated for the cable as unidirectional copper wire shielding or woven copper wire shielding has fastening force to the cable when the cable is heated to be expanded in the prior art.
Description
Technical field
The utility model belongs to electric wire copper wire shielding field, particularly relates to a kind of " SZ " type copper wire screen of electric wire.
Background technology
The copper wire shielding of electric wire, its main application is ground connection and prevents electromagnetic interference.For reach the general mesolow power cable of above-mentioned functions adopt stranded dredge around pattern.The mesolow power cable of copper wire shield type generally adopts unidirectional " S " stranded thin around the processing pattern.When adopt stranded dredge around the time, the copper wire layer has bigger one to tighten power to the core of internal layer, expansion in cable operation back because of the internal layer core, comparatively speaking copper wire to core to tighten power bigger, this power of tightening of going down for a long time can influence the variation of semi-conductive layer thickness, even hurt insulation, very big to the life-span influence of cable.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of electric wire " SZ " type copper wire screen, is tightened the influence of power when solving cable long-time running in the prior art and the problem damaged.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of electric wire " SZ " type copper wire screen is provided, the copper wire that to comprise with the electrician be the electric wire of material with soft copper silk or zinc-plated soft copper silk, described copper wire with " SZ " direction stranded and thin on the electric wire as screen, twisting pitch the preceding paragraph distance that described " SZ " direction refers to copper wire for clockwise direction, another segment distance for counterclockwise.
Described strand angle is for being 270 ° clockwise, counterclockwise, and a described twisting pitch is 15 times to 22 times a shielding core external diameter.
Principle of the present utility model such as Fig. 2, wherein the B point is motionless, A point as turn clockwise, then formed between A, B S to.When cable travels forward by certain speed, if the B point add a lapping device with S to fixing, cable is gone ahead behind the certain distance, A is pressed be rotated counterclockwise.At this moment between AB, just formed Z to, carry out Z when cable advances to the B point then again to fixing, the rotation repeatedly of ordering like this owing to A, it is stranded just to have formed " SZ " so on cable.A point angle of rotation is generally less than 360 ° (being about 270 °).
The copper wire shielding uses " SZ " stranded, and the forward and reverse rotational angle of strand body is about 270 °, and an one SZ pitch is approximately equal to 1.5 times unidirectional twisting pitch, and the unidirectional strand of its copper wire Haul Rate fundamental sum is with consistent, and copper material consumes about the same.
Beneficial effect
After using the utility model, effect to the copper wire shielding does not have any negative effect, and the bending property of its cable is better, and farther much smaller than the unidirectional stranded power of tightening of copper wire to the power of tightening of core, has eliminated the hidden danger of damaging cable because of the power of tightening of copper wire shielding greatly substantially.
Description of drawings
Fig. 1 is copper wire shielding pattern figure of the present utility model.
Fig. 2 is a schematic diagram of the present utility model.
Fig. 3 is the copper wire shielding pattern figure of prior art.
Wherein: 1-screen, 2-copper wire.
Embodiment
Below in conjunction with specific embodiment, further set forth the utility model.Should be understood that these embodiment only to be used to the utility model is described and be not used in the restriction scope of the present utility model.Should be understood that in addition those skilled in the art can make various changes or modifications the utility model after the content of having read the utility model instruction, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
Embodiment 1
As shown in Figure 1, a kind of " SZ " type copper wire screen of electric wire, comprise the copper wire 2 with soft copper silk or the zinc-plated soft copper silk electric wire that is material with the electrician, described copper wire 2 with " SZ " direction stranded and thin on the electric wire as screen 1, twisting pitch the preceding paragraph distance that described " SZ " direction refers to copper wire for clockwise direction, another segment distance for counterclockwise.
Described strand angle is for being 270 ° clockwise, counterclockwise, and a described twisting pitch is 15 times to 22 times a shielding core external diameter.
Claims (2)
1. " SZ " type copper wire screen of an electric wire, the copper wire (2) that to comprise with the electrician be the electric wire of material with soft copper silk or zinc-plated soft copper silk, it is characterized in that: described copper wire (2) with " SZ " direction stranded and thin on the electric wire as screen (1), twisting pitch the preceding paragraph distance that described " SZ " direction refers to copper wire for clockwise direction, another segment distance for counterclockwise.
2. " SZ " type copper wire screen of a kind of electric wire according to claim 1, it is characterized in that: described strand angle is for being 270 ° clockwise, counterclockwise, and a described twisting pitch is 15 times to 22 times a shielding core external diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202052525U CN201812558U (en) | 2010-05-25 | 2010-05-25 | 'SZ'-shaped copper wire shielding layer of wire and cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202052525U CN201812558U (en) | 2010-05-25 | 2010-05-25 | 'SZ'-shaped copper wire shielding layer of wire and cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201812558U true CN201812558U (en) | 2011-04-27 |
Family
ID=43895497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202052525U Expired - Fee Related CN201812558U (en) | 2010-05-25 | 2010-05-25 | 'SZ'-shaped copper wire shielding layer of wire and cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201812558U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102364613A (en) * | 2011-10-08 | 2012-02-29 | 江苏亨通电力电缆有限公司 | Method for manufacturing metal shielding layer of 'SZ' type copper-wire-shielded medium-voltage cable |
| CN102855963A (en) * | 2012-08-27 | 2013-01-02 | 大同电线电缆科技（吴江）有限公司 | Stranded wire, electric wire containing stranded wire, manufacturing device and method thereof |
-
2010
- 2010-05-25 CN CN2010202052525U patent/CN201812558U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102364613A (en) * | 2011-10-08 | 2012-02-29 | 江苏亨通电力电缆有限公司 | Method for manufacturing metal shielding layer of 'SZ' type copper-wire-shielded medium-voltage cable |
| CN102855963A (en) * | 2012-08-27 | 2013-01-02 | 大同电线电缆科技（吴江）有限公司 | Stranded wire, electric wire containing stranded wire, manufacturing device and method thereof |
| CN102855963B (en) * | 2012-08-27 | 2015-09-02 | 大同电线电缆科技（吴江）有限公司 | Twisted wire, electric wire containing this twisted wire and manufacturing installation thereof and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20141014 Granted publication date: 20110427 |
|
| RINS | Preservation of patent right or utility model and its discharge | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20150414 Granted publication date: 20110427 |
|
| RINS | Preservation of patent right or utility model and its discharge | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110427 Termination date: 20160525 |