CN210245115U - Anti-extrusion medium-low voltage cable - Google Patents
Anti-extrusion medium-low voltage cable Download PDFInfo
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- CN210245115U CN210245115U CN201921069003.5U CN201921069003U CN210245115U CN 210245115 U CN210245115 U CN 210245115U CN 201921069003 U CN201921069003 U CN 201921069003U CN 210245115 U CN210245115 U CN 210245115U
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Abstract
The utility model discloses an anti-extrusion medium and low voltage cable, which comprises a cable core, an outer sheath, a wrapping layer, an armor layer and an inner sheath; the wrapping layer, the inner sheath, the armor layer and the outer sheath are sequentially coated outside the cable core from inside to outside; the inner sheath consists of a plurality of elastic pipes which are distributed outside the wrapping layer along the circumferential direction; when the cable bears extrusion force, force is transmitted to the inner protection layer through the outer sheath and the armor layer, the inner protection layer is composed of a plurality of hollow elastic tubes, holes in the middle of the elastic tubes deform to absorb part of the extrusion force and generate a vibration damping effect, extrusion to the cable core is reduced, deformation of the cable core is reduced, and the service life of the cable is prolonged; the armor is established in the outside of inner sheath, and the steel wire of the armor that interlocks each other is worked out at a plurality of elastic tube outer walls, is convenient for fix elastic tube and increases the wholeness of many elastic tubes.
Description
Technical Field
The utility model relates to the technical field of cables, especially, relate to an anti extruded well low voltage cable.
Background
Cables are generally rope-like cables made by stranding several or groups of conductors, at least two in each group, each group being insulated from each other and often twisted around a center, the entire outer surface being covered with a highly insulating covering. The device is erected in the air or installed underground or underwater for telecommunication or power transmission. The cable core of the existing cable is externally provided with a plurality of solid protective layers made of rubber or other elastic materials, when the cable is instantaneously extruded or impacted, the impact resistance or the extrusion capacity of the cable is limited, and finally, the pressure or the impact force of the cable acts on the cable core, so that the cable core is deformed or even broken, and the transmission of electric power or signals is influenced.
SUMMERY OF THE UTILITY MODEL
For solving the technical problem who exists among the background art, the utility model provides an anti extruded well low voltage cable.
The utility model provides an anti-extrusion medium and low voltage cable, which comprises a cable core, an outer sheath, a wrapping layer, an armor layer and an inner sheath;
the wrapping layer, the inner sheath, the armor layer and the outer sheath are sequentially coated outside the cable core from inside to outside;
the inner sheath consists of a plurality of elastic tubes, the elastic tubes are parallel to the cable core, and the elastic tubes are distributed outside the cable core along the circumferential direction;
when the cable bears extrusion force, force is transmitted to the inner protection layer through the outer sheath and the armor layer, the inner protection layer is composed of a plurality of hollow elastic tubes, holes in the middle of the elastic tubes deform to absorb part of the extrusion force and generate a vibration damping effect, extrusion to the cable core is reduced, deformation of the cable core is reduced, and the service life of the cable is prolonged; the armor is established in the outside of inner sheath, and the steel wire of the armor that interlocks each other is worked out at a plurality of elastic tube outer walls, is convenient for fix elastic tube and increases the wholeness of many elastic tubes.
As a further optimized proposal of the utility model, the elastic tube is a rubber tube.
As a further optimized proposal of the utility model, the outer diameter of the elastic tube is 3 to 10 times of the inner diameter of the elastic tube.
As the utility model discloses the scheme of further optimization, the elastic tube includes first elastic tube and second elastic tube, and many first elastic tubes distribute along circumference and form first interior sheath on the covering, and many second elastic tubes distribute along circumference and form the interior sheath of second on first interior sheath, and the armor is established in the outside of second sheath.
As a further optimized solution of the present invention, two first elastic tubes adjacent to each other are circumscribed.
As the utility model discloses the scheme of further optimization, an arbitrary second elasticity pipe is established between two adjacent first elasticity pipes, and the second elasticity pipe is circumscribed rather than two adjacent first elasticity pipes each other.
As the utility model discloses the scheme of further optimization, it has the spout along its axis direction to open on the first elastic tube, is equipped with the draw runner on the second elastic tube, and the draw runner matches with the spout.
As a further optimized scheme of the utility model, two arbitrary adjacent second elastic tubes are circumscribed.
As the utility model discloses the scheme of further optimization forms between second elasticity pipe and the armor and fills the chamber, and it has the elasticity filler to fill the intracavity packing.
As a further preferred aspect of the present invention, the elastic coefficient of the elastic filler is smaller than the elastic coefficient of the second elastic tube.
In the utility model, the anti-extrusion medium and low voltage cable absorbs more extrusion force through the deformation of a plurality of elastic pipes distributed circumferentially, so that the cable can bear larger extrusion force; prevent through the armor that the cable rolls, and the armor forms for the steel wire coiling, the steel wire coiling is in the outside of many elastic tubes, and the many elastic tubes of being convenient for are fixed, and increase the wholeness of cable, and the processing of being convenient for.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 is a sectional view of the present invention;
fig. 2 is a partial enlarged view of the area a of the present invention.
In the figure: the cable comprises a cable core 1, an outer sheath 2, a wrapping layer 3, an armor layer 4, an inner sheath 5, an elastic tube 6, a first elastic tube 60, a second elastic tube 61, a filling cavity 8 and an elastic filler 9.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar designations denote like or similar elements or elements having like or similar functionality throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
It will be understood that the terms "central," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in an orientation or positional relationship indicated in the drawings for convenience and simplicity of description only, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the invention.
As shown in fig. 1-2, an anti-extrusion medium and low voltage cable comprises a cable core 1 and an outer sheath 2, and further comprises a wrapping layer 3, an armor layer 4 and an inner sheath 5;
the wrapping layer 3, the inner sheath 5, the armor layer 4 and the outer sheath 2 are sequentially coated outside the cable core 1 from inside to outside;
the inner sheath 5 is composed of a plurality of elastic tubes 6, the elastic tubes 6 are parallel to the cable core 1, the cross sections of the elastic tubes 6 are circular rings, the elastic tubes 6 are circumferentially distributed outside the cable core 1, one elastic tube 6 is fixed on the wrapping layer 3 during installation, the second elastic tube 6 is fixed, and after the elastic tubes 6 are completely fixed in the circulating mode, the armor layer 4 is fixed outside the elastic tubes 6;
when a heavy object extrudes the cable, force is transmitted to the inner protection layer 5 through the outer sheath 2 and the armor layer 4, the inner protection layer 5 consists of a plurality of hollow elastic tubes 6, holes in the middle of the elastic tubes 6 deform to absorb part of extrusion force and generate a vibration reduction effect, so that the extrusion to the cable core is reduced, the deformation of the cable core is reduced, and the service life of the cable is prolonged; armor 4 establishes in the outside of inner sheath 5, and the steel wire of the armor 4 that interlocks each other is worked out at 6 outer walls of a plurality of elastic tubes, is convenient for fix elastic tube 6 and increase the wholeness of many elastic tubes 6, and on the cross section of cable, elastic tube 6, armor 4 and around the package constitution similar orange skin structure, the wholeness is good, the protection cable core of being convenient for.
The elastic tube 6 is a rubber tube, and the outer diameter of the elastic tube 6 is 3-10 times of the inner diameter of the elastic tube 6;
the elastic pipe 6 comprises a first elastic pipe 60 and a second elastic pipe 61, a plurality of first elastic pipes 60 are distributed on the wrapping layer 3 along the circumferential direction to form a first inner protective layer, a plurality of second elastic pipes 61 are distributed on the first inner protective layer along the circumferential direction to form a second inner protective layer, and the armor layer is arranged on the outer side of the second protective layer;
any two adjacent first elastic tubes 60 are circumscribed;
any one second elastic tube 61 is arranged between two adjacent first elastic tubes 60, and the second elastic tube 61 and the two adjacent first elastic tubes 60 are externally tangent to each other;
the first elastic tube 60 is provided with a sliding groove 10 along the axial direction, the second elastic tube 61 is provided with a sliding strip 11, and the sliding strip 11 is matched with the sliding groove 10;
any two adjacent second elastic tubes 61 are circumscribed;
a filling cavity 8 is formed between the second elastic tube 61 and the armor layer 4, and the filling cavity 8 is filled with an elastic filler 9;
the elastic modulus of the elastic packing 9 is smaller than that of the second elastic tube 61.
In the specific working process of the anti-extrusion medium and low voltage cable of the embodiment, a certain position of the cable is extruded or impacted, the extrusion force at the position is transmitted to the second elastic tube 61 corresponding to the position through the outer protective layer 2 and the armor layer 4, the second elastic tube 61 is deformed and directly transmits the pressure to the first elastic tube 60 tangent to the second elastic tube, one part of the pressure directly transmits the extrusion force to the first elastic tube 60 through the armor layer 4 and the elastic filler, the extrusion force is transmitted between the adjacent second elastic tubes 61 through the elastic filler 9, the extrusion force can be directly transmitted between the adjacent first elastic tubes 60, and also can be transmitted through the elastic filler 9, so that the extrusion force can be quickly transmitted to the first elastic tubes 60 and the first elastic tubes 60, and the inner sheath 5 absorbs more extrusion force, thereby reducing the extrusion of the cable core;
first elastic tube 60 is fixed on wrapping 3 through the mode of pasting, and second elastic tube 61 is fixed on first elastic tube 60 through the mode of pasting, and the armor strip of armor 4 is worked out in the outside of second elastic tube 61, and is preferred, and the armor strip card of innermost survey goes into the outer wall of second elastic tube 61, is convenient for fix second elastic tube 61, and increases the wholeness of cable.
In the preferred embodiment, the elastic tube 6 is a rubber tube, so that the manufacturing cost is saved.
In the preferred embodiment, the outer diameter of the elastic tube 6 is 3-10 times the inner diameter of the elastic tube 6, the aperture of the elastic tube 6 is relatively small, the elastic coefficient of the outer wall of the elastic tube 6 can be relatively small under the condition of absorbing the same radial extrusion force, and the axial deformation of the elastic tube 6 can also be relatively large, so that the elastic tube can bear larger axial stretching.
In the preferred embodiment, the elastic tube 6 includes a first elastic tube 60 and a second elastic tube 61, the first elastic tubes 60 are circumferentially distributed on the wrapping layer 3 to form a first inner sheath, the second elastic tubes 61 are circumferentially distributed on the first inner sheath to form a second inner sheath, the armor layer 4 is disposed on the outside of the second sheath, the first elastic tube 60 is fixed on the wrapping layer 3 by means of adhesion, the second elastic tube 61 is fixed on the first elastic tube 60 by means of adhesion, the armor strips of the armor layer 4 are woven on the outside of the second elastic tube 61, preferably, the innermost armor strips are clamped into the outer wall of the second elastic tube 61, so as to fix the second elastic tube 61 and increase the integrity of the cable, when the cable is extruded at a certain position, the extrusion force is transmitted to the second elastic tube 61 through the outer sheath 2 and the armor layer 4, the second elastic tube 61 deforms and extrudes the first elastic tube 60, thereby increasing the extrusion force absorbed by the inner sheath 5 and reducing the bearing and pressure of the cable core 1.
In this embodiment, preferably, any one of the second elastic tubes 61 is disposed between two adjacent first elastic tubes 60, and the second elastic tube 61 is circumscribed with the two adjacent first elastic tubes 60, so that the number of the first elastic tubes 60 is equal to that of the second elastic tubes 61, which is convenient for the installation and fixation of the second elastic tubes 61, and is convenient for the second elastic tubes 61 to directly transmit the borne pressure to the first elastic tubes 60, thereby increasing the absorption of the first elastic tubes 60 and the second elastic tubes 61 on the extrusion force, and reducing the deformation of the cable core 1.
In this embodiment, preferably, any two adjacent first elastic tubes 60 are externally tangent, so that the transmission of force between the first elastic tubes 60 is facilitated, and when one or more first elastic tubes 60 are subjected to the extrusion force transmitted by the second elastic tube 61, the adjacent first elastic tubes 60 can directly bear a part of the extrusion force, so that the deformation of the first elastic tubes 60 is relatively uniform, and the deformation of the cable core 1 is reduced.
In this embodiment, preferably, any one of the second elastic tubes 61 is disposed between two adjacent first elastic tubes 60, and the second elastic tube 61 and two adjacent first elastic tubes 60 are circumscribed with each other, when the cable is extruded, the extrusion force is firstly transmitted to the second elastic tube 61 through the elastic filler 9, the second elastic tube 61 deforms and transmits a part of the extrusion force to the first elastic tube 60, and the first elastic tube 60 deforms to reduce the extrusion force applied to the cable core 1, thereby further increasing the anti-extrusion capability thereof.
In this embodiment, preferably, the first elastic tube 60 is provided with a sliding groove 10 along the axial direction thereof, the second elastic tube 61 is provided with a sliding strip 11, the sliding strip 11 is matched with the sliding groove 10, the second elastic tube 61 can slide along the axial direction of the cable relative to the first elastic tube 60 through the sliding strip 11 and the sliding groove 10, and when the cable is subjected to external tensile force, the sliding strip 11 can generate a certain relative displacement relative to the sliding groove 10, so that the tensile force applied to the cable core 1 is reduced, and the cable drawing capability is increased.
In this embodiment, preferably, any two adjacent second elastic tubes 61 are externally tangent, so that the transmission of force between the second elastic tubes 61 is facilitated, and when one or more second elastic tubes 61 receive the extrusion force transmitted by the elastic filler 9, the adjacent second elastic tubes 61 can directly bear a part of the extrusion force, so that the deformation of the second elastic tubes 61 is relatively uniform, and the deformation of the cable core 1 is reduced.
In this embodiment, preferably, a filling cavity 8 is formed between the second elastic tube 61 and the armor 4, and the filling cavity 8 is filled with an elastic filler 9 for transmitting the pressing force between the second elastic tubes 61, and particularly, the effect of transmitting the force between the non-adjacent second elastic tubes 61 is better, and the pressure acting on the armor 4 can also be directly transmitted to the second elastic tubes 61 through the elastic filler 9, so as to increase the force transmission efficiency.
In this embodiment, preferably, the elastic coefficient of the elastic filler 9 is smaller than that of the second elastic tube 61, so that the extrusion force is transmitted to the second elastic tube 61 conveniently, the extrusion force is dispersed by the elastic tubes 6 conveniently, the deformation of the cable core of the cable under the extrusion or impact condition is reduced, and the service life of the cable is prolonged.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (10)
1. An anti-extrusion medium and low voltage cable comprises a cable core (1) and an outer sheath (2), and is characterized by also comprising a wrapping layer (3), an armor layer (4) and an inner sheath (5);
the wrapping layer (3), the inner sheath (5), the armor layer (4) and the outer sheath (2) are sequentially coated outside the cable core (1) from inside to outside;
the inner sheath (5) comprises many elastic tubes (6), and every elastic tube (6) is parallel with cable core (1), and many elastic tubes (6) distribute outside cable core (1) along circumference.
2. Anti-extrusion medium and low voltage cable according to claim 1, characterized in that the elastic tube (6) is a rubber tube.
3. The extrusion-resistant medium and low voltage cable according to claim 1, wherein the outer diameter of the elastic tube (6) is 3-10 times the inner diameter of the elastic tube (6).
4. The extrusion-resistant medium and low voltage cable according to claim 1, wherein the elastic tube (6) comprises a first elastic tube (60) and a second elastic tube (61), a plurality of the first elastic tubes (60) are circumferentially distributed on the wrapping layer (3) to form a first inner sheath, a plurality of the second elastic tubes (61) are circumferentially distributed on the first inner sheath to form a second inner sheath, and the armor layer (4) is arranged outside the second sheath.
5. Anti-extrusion medium and low voltage cable according to claim 4 characterized in that any two adjacent first elastic tubes (60) are circumscribed.
6. The crush-resistant middle-low voltage cable as claimed in claim 4, wherein any one of the second elastic tubes (61) is disposed between two adjacent ones of the first elastic tubes (60), and the second elastic tube (61) and the two adjacent ones of the first elastic tubes (60) are circumscribed with each other.
7. The anti-extrusion medium and low voltage cable as claimed in claim 6, wherein the first elastic tube (60) is provided with a sliding groove (10) along the axial direction thereof, the second elastic tube (61) is provided with a sliding strip (11), and the sliding strip (11) is matched with the sliding groove (10).
8. Anti-extrusion medium and low voltage cable according to claim 7, characterized in that any two adjacent second elastic tubes (61) are circumscribed.
9. Anti-extrusion medium and low voltage cable according to claim 8, characterized in that a filling cavity (8) is formed between the second elastic tube (61) and the armor layer (4), the filling cavity (8) being filled with an elastic filler (9).
10. Anti-extrusion medium and low voltage cable according to claim 9, characterized in that the elastic modulus of the elastic filler (9) is smaller than the elastic modulus of the second elastic tube (61).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921069003.5U CN210245115U (en) | 2019-07-09 | 2019-07-09 | Anti-extrusion medium-low voltage cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921069003.5U CN210245115U (en) | 2019-07-09 | 2019-07-09 | Anti-extrusion medium-low voltage cable |
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| Publication Number | Publication Date |
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| CN210245115U true CN210245115U (en) | 2020-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921069003.5U Active CN210245115U (en) | 2019-07-09 | 2019-07-09 | Anti-extrusion medium-low voltage cable |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113217717A (en) * | 2021-04-19 | 2021-08-06 | 四川比耐斯管业有限公司 | Plastic-lined composite pipe |
-
2019
- 2019-07-09 CN CN201921069003.5U patent/CN210245115U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113217717A (en) * | 2021-04-19 | 2021-08-06 | 四川比耐斯管业有限公司 | Plastic-lined composite pipe |
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