CN214505030U

CN214505030U - Distortion-resistant bent round power line

Info

Publication number: CN214505030U
Application number: CN202120481240.3U
Authority: CN
Inventors: 刘欣; 季美宏
Original assignee: Suzhou Tongyuan Cable Technology Co ltd
Current assignee: Suzhou Tongyuan Cable Technology Co ltd
Priority date: 2021-03-05
Filing date: 2021-03-05
Publication date: 2021-10-26
Anticipated expiration: 2031-03-05

Abstract

The utility model relates to a cable technical field specifically is a circular power cord of buckling of resistant distortion, including three strands of wires, around the band, the silicon rubber sheath, fire-retardant sheath and wear-resisting sheath, be equipped with a center packing strip and three edge packing strips around the band, three strands of wires and three edge packing strips use center packing strip to be the crisscross distribution of annular as the center, the vertical cross-section of the outer fringe of edge packing strip is Lu luo ke si triangle-shaped, the arc outer fringe of edge packing strip respectively with the wire with around band looks butt, and the center department of edge packing strip sets up the central cavity that parallels with the length direction of center packing strip. The utility model discloses a vertical cross-section of outer fringe is the edge packing strip of Lurocco triangle-shaped, compares traditional circular packing strip, and edge packing strip is big with the wire and around band area of contact, and the surface is laminated more for the power cord structure is more regular, compact, effectively hinders the wire and is around the displacement in the band.

Description

Distortion-resistant bent round power line

Technical Field

The utility model relates to a cable technical field specifically is a circular power cord of buckling of resistant distortion.

Background

The power line is a wire that transmits current. The usual way of current transfer is point-to-point transfer. The power line mainly comprises an outer sheath, an inner sheath and conductors, and common transmission conductors comprise metal wires made of copper and aluminum materials.

The utility model discloses a utility model with publication number CN205050573U discloses a be used for clear cable of intelligence, this cable includes that central part and extrusion cladding are at the outer jacket of central part outsidely, the central part is including leading to liquid pipe, two power cords, many filler strips and a control signal line, control signal line and power cord distribute in leading to the liquid outside of tubes, lead to liquid pipe, two power cords, a control signal line and the integrative transposition of many filler strips, the utility model provides a filler strip is circular because of its vertical cross-section, it is little to lead to filler strip and power cord contact surface, the structure clearance is big, after the power cord is crooked, the conductor takes place the displacement easily in the inner sheath.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a circular power cord of buckling is warp to resistant distortion to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a circular power cord of resistant distortion buckling, includes three strands of wires, three strands the common crowded package has around the band outside the wire, it has the silicon rubber sheath to wrap around the crowded package of band outward, the crowded package has fire-retardant sheath outward, the crowded package has wear-resisting sheath outward of fire-retardant sheath, be equipped with a center filler strip and three edge filler strips around the band, three strands the wire and three the edge filler strip with the center filler strip is the crisscross distribution of annular for the center, the vertical cross-section of the outer fringe of edge filler strip is the reunion triangle-shaped, the arc outer fringe of edge filler strip respectively with the wire with around band looks butt, just the center department of edge filler strip set up with the central cavity that the length direction of center filler strip paralleled.

Optionally, the wire includes the sinle silk and extrudes the insulating cover outside the sinle silk, the sinle silk is twisted according to the mode of regular transposition by even strand tinned wire and is formed.

Optionally, the vertical section of the central cavity is circular, and the ratio of the radius of the central cavity to the radius of the arc-shaped outer edge of the edge filling strip is 1: 4.

Optionally, the thickness ratio of the silicone rubber sheath to the flame-retardant sheath to the wear-resistant sheath is 3:8:2, and a colored tape is extruded on the surface of the wear-resistant sheath.

Optionally, the flame-retardant sheath comprises an irradiation cross-linked polyolefin low-smoke halogen-free flame-retardant tube; the wear-resistant jacket comprises a black linear low density polyethylene tube.

Compared with the prior art, the utility model provides a circular power cord of buckling is warp to resistant distortion possesses following beneficial effect:

1. the utility model adopts the edge filling strip with the outer edge vertical section in a shape of a Lurocuss triangle, compared with the traditional round filling strip, the contact area between the edge filling strip and the wire and the wrapping tape is large, and the surface is more laminated, so that the structure of the power cord is more regular and compact, and the displacement of the wire in the wrapping tape is effectively prevented;

2. the utility model discloses a center department at edge packing strip sets up central cavity, saves edge packing strip material, improves the pliability of edge packing strip for the power cord has fine warp-resistant ability of buckling.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

In the figure: 1. a wire; 2. wrapping a tape; 3. a center-fill strip; 4. an edge filler strip; 5. a central cavity; 6. a silicone rubber sheath; 7. a flame retardant jacket; 8. a wear-resistant sheath; 9. color band.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example (b): please refer to fig. 1, the utility model provides a circular power cord of warp resistance, including three strands of wires 1, three strands of wires 1 are live wire, zero line and ground wire respectively, and wire 1 comprises sinle silk and crowded insulating cover of wrapping outside the sinle silk, and the sinle silk is twisted according to the mode transposition of rule transposition by even number strand tinned wire and forms, twists according to the mode of regular, concentric and each layer in succession according to not equidirectional transposition promptly. The three-strand lead 1 is jointly extruded with a wrapping tape 2, the wrapping tape 2 is extruded with a silicon rubber sheath 6, the silicon rubber sheath 6 is extruded with a flame-retardant sheath 7, and the flame-retardant sheath 7 is extruded with a wear-resistant sheath 8.

Wherein, the thickness ratio of the silicon rubber sheath 6, the flame-retardant sheath 7 and the wear-resistant sheath 8 is 3:8:2, and a colored strip 9 is extruded on the surface of the wear-resistant sheath 8. The flame-retardant sheath 7 is an irradiation cross-linked polyolefin low-smoke halogen-free flame-retardant pipe formed by extrusion molding, the smoke amount is extremely small during combustion, harmful gas and corrosive gas cannot be generated, and the requirements of environment-friendly flame-retardant electric wires are completely met. The wear-resistant sheath 8 is made of extrusion molding black linear low-density polyethylene pipe, has higher softening temperature and melting temperature, and has the advantages of high strength, good wear resistance, good toughness, high rigidity, good heat resistance and cold resistance, and the like.

Be equipped with a center packing strip 3 and three edge packing strips 4 around in the area 2, three strands of wires 1 and three edge packing strips 4 use center packing strip 3 to be the crisscross distribution of annular as the center, and the vertical cross-section of the outer fringe of edge packing strip 4 is the reulox triangle-shaped, and the arc outer fringe of edge packing strip 4 respectively with wire 1 with around area 2 looks butt, and the center department of edge packing strip 4 sets up the central cavity 5 that parallels with the length direction of center packing strip 3. The vertical section of the central cavity 5 is circular, and the ratio of the radius of the central cavity 5 to the radius of the arc-shaped outer edge of the edge filling strip 4 is 1: 4.

Edge packing strip 4 is reunion triangle-shaped because of the vertical cross-section of its outer fringe, according to the plane geometry principle, reunion triangle-shaped's curvature radius is little, compare traditional circular packing strip, edge packing strip 4 is 1 with the wire and big around band 2 area of contact, its surface is laminated more, make the power cord structure more regular, compact, effectively hinder wire 1 and take place the displacement in around band 2, and center cavity 5 is seted up through the center department at edge packing strip 4, the material of edge packing strip 4 has been saved, reduce the power cord quality, also improve the pliability of edge packing strip 4 simultaneously, make the power cord have fine warp-resistant ability of buckling.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a circular power cord of buckling is resisted to distortion which characterized in that: comprises three strands of wires (1), a wrapping tape (2) is extruded and wrapped outside the three strands of wires (1) together, a silicon rubber sheath (6) is extruded outside the wrapping tape (2), a flame-retardant sheath (7) is extruded outside the silicon rubber sheath (6), the flame-retardant sheath (7) is externally extruded with a wear-resistant sheath (8), the wrapping tape (2) is internally provided with a central filling strip (3) and three edge filling strips (4), the three strands of wires (1) and the three edge filling strips (4) are annularly and alternately distributed by taking the central filling strip (3) as the center, the vertical section of the outer edge of the edge filling strip (4) is in a shape of a Luo-Kers triangle, the arc-shaped outer edge of the edge filling strip (4) is respectively abutted with the lead (1) and the wrapping tape (2), and a central cavity (5) parallel to the length direction of the central filling strip (3) is formed in the center of the edge filling strip (4).

2. The torsion-resistant bending round power cord as claimed in claim 1, wherein: the wire (1) comprises a wire core and an insulating sleeve extruded outside the wire core, and the wire core is formed by twisting even-number strands of tinned copper wires in a regular twisting mode.

3. The torsion-resistant bending round power cord as claimed in claim 1, wherein: the vertical section of the central cavity (5) is circular, and the ratio of the radius of the central cavity (5) to the radius of the arc-shaped outer edge of the edge filling strip (4) is 1: 4.

4. The torsion-resistant bending round power cord as claimed in claim 1, wherein: the thickness ratio of the silicone rubber sheath (6), the flame-retardant sheath (7) and the wear-resistant sheath (8) is 3:8:2, and a colored strip (9) is extruded on the surface of the wear-resistant sheath (8).

5. The torsion-resistant bending round power cord as claimed in claim 4, wherein: the flame-retardant sheath (7) comprises an irradiation cross-linked polyolefin low-smoke halogen-free flame-retardant pipe; the wear resistant sheath (8) comprises a black linear low density polyethylene tube.