CN114325991B - Indoor and outdoor general self-supporting rubber-insulated-wire cable - Google Patents
Indoor and outdoor general self-supporting rubber-insulated-wire cable Download PDFInfo
- Publication number
- CN114325991B CN114325991B CN202210206037.4A CN202210206037A CN114325991B CN 114325991 B CN114325991 B CN 114325991B CN 202210206037 A CN202210206037 A CN 202210206037A CN 114325991 B CN114325991 B CN 114325991B
- Authority
- CN
- China
- Prior art keywords
- self
- communication
- arc
- insulated
- wire
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Light Guides In General And Applications Therefor (AREA)
Abstract
The invention discloses a self-supporting rubber-insulated-wire optical cable which comprises a reinforcement, a communication optical unit and an outer sheath, wherein the reinforcement is arranged on the outer sheath; the reinforcement is formed of a laid-open metal reinforcement serving as a suspension wire, the reinforcement being arranged flat with the communication light unit; the outer sheath is tightly attached to the outer side of the reinforcing part and covers the outer side of the communication light unit. The self-supporting rubber-insulated-wire optical cable provided by the invention simplifies the structure of the existing rubber-insulated-wire optical cable, cancels the design of the sheaths and the reinforcing pieces of the two butterfly wings, adopts the reinforcing pieces to be used as suspension wires at the same time, and meets the self-supporting design of the outdoor rubber-insulated-wire optical cable; and a butterfly-shaped sheath is eliminated, the communication optical unit is close to the reinforcing piece and is arranged in a straight manner, so that the tensile property is ensured, and lateral pressure is shared by one side of the reinforcing piece, so that the pressure resistance of the optical cable is improved. On the other hand, as the cable diameter is reduced, the bending performance of the cable meets the indoor wiring requirement.
Description
Technical Field
The invention belongs to the technical field of optical fiber communication, and particularly relates to an indoor and outdoor universal self-supporting rubber-insulated optical cable.
Background
Rubber-insulated fiber optic cables, also known as butterfly cables, are generally classified as indoor rubber-insulated fiber optic cables and outdoor rubber-insulated fiber optic cables. The price difference between the indoor type and the outdoor type is larger, the outdoor type price is about 2 times of the indoor type price, the price factor is considered when a specific design scheme is made, under the general condition, a self-supporting rubber-insulated optical cable with higher cost and better tensile property is adopted outdoors, and an ordinary butterfly-shaped optical cable is used indoors and is transited through a fiber distribution box or a joint box.
The rubber-insulated optical cable is used in FTTX engineering in a large scale, and two connection modes are mainly adopted: one is optical cable cold connection technology (physical connection) mainly using cold connector, and one is hot melting technology using welding machine as tool. However, the cold-joining technique has obvious defects: the loss is large, the service life is short, and the maintenance cost is high; the hot melting technology has complex operation, low efficiency and large equipment investment.
In addition, the existing outdoor rubber-insulated-wire optical cable has good tensile property and can bear stronger tensile force without fiber breakage. In the actual installation process, fixing modes such as winding and fixing, twisting and fixing and the like on a cement rod are generally adopted to save cost or improve efficiency, however, the outdoor rubber-insulated-wire optical cable is likely to have increased loss and even broken fibers due to bending or large pressure generated by the fixing modes.
Disclosure of Invention
Aiming at the defects or improvement requirements of the prior art, the invention provides an indoor and outdoor universal self-supporting rubber-insulated optical cable, aiming at meeting the design requirements of the indoor and outdoor universal rubber-insulated optical cable by simplifying the design of the prior rubber-insulated optical cable and considering the performances of cost, tensile property and side pressure resistance, thereby solving the technical problems of high connection loss, installation cost and maintenance cost caused by the fact that the prior rubber-insulated optical cable is installed from the outdoor to the indoor wiring and needs to be transited by adopting a fiber distribution box or a joint box.
To achieve the above object, according to one aspect of the present invention, there is provided a self-supporting covered wire optical cable including a strength member, a communication optical unit, and an outer sheath; the reinforcement is formed of a laid-open metal reinforcement serving as a suspension wire, the reinforcement being arranged flat with the communication light unit; the outer sheath is tightly attached to the outer side of the reinforcing part and covers the outer side of the communication light unit.
Preferably, the tensile modulus of the metal reinforcement of the self-supporting rubber-covered wire optical cable is greater than that of the communication optical unit, and the self-supporting rubber-covered wire optical cable is preferably made of thick steel wires.
Preferably, the outer sheath of the self-supporting rubber-insulated-wire optical cable is respectively arc-shaped on one side of the reinforcement and one side of the communication optical unit; the radius of curvature of the arc on the side of the stiffener is larger than the radius of curvature of the arc on the side of the communication optical unit.
Preferably, the outer sheath of the self-supporting rubber-insulated-wire optical cable is provided with two circular arcs in an 8-shaped or gourd-shaped shape, the circular arc radius of one side of the reinforcement is larger than that of one side of the communication optical unit, and the circular arc radius of one side of the reinforcement is preferably 1.3 to 1.5 times that of one side of the communication optical unit.
Preferably, the circular arc radius of one side of the reinforcing element of the self-supporting rubber-insulated-wire optical cable is concentrically arranged with the reinforcing element; the geometric center of the cross section of the communication light unit is positioned between the centers of circles where the arcs on one side of the communication light unit are forced.
Preferably, the cross section of the reinforcing member of the self-supporting rubber-insulated-wire optical cable is circular, and the diameter of the reinforcing member is larger than the maximum value of the cross section size of the communication optical unit.
Preferably, the external dimension of the cross section of the self-supporting rubber-covered wire optical cable meets the following conditions:
when an arc line at one side of the self-supporting rubber-covered wire optical cable reinforcing piece and an arc line at one side of the communication light unit are respectively closely tangent to a circumference corresponding to the circumference of the cross section of the cement rod, the track of the arc line at one side of the self-supporting rubber-covered wire optical cable communication light unit does not exceed an external common tangent line segment of the circumference and the arc line at one side of the self-supporting rubber-covered wire optical cable reinforcing piece; preferably, the first and second liquid crystal materials are,
the outer sheath has two sections of circular arcs and is 8 font or calabash type, and the circular arc radius of reinforcement one side is greater than the circular arc radius of communication light unit one side, the outer sheath is at communication light unit one side circular arc radius
The following conditions are satisfied:
wherein, the first and the second end of the pipe are connected with each other,
the arc radius of the outer sheath at one side of the reinforcement,
the cross section radius of the cement pole is installed outside the rubber-insulated-wire cable chamber.
Preferably, grooves are formed in two sides of the cross section of the outer sheath of the self-supporting rubber-insulated-wire optical cable.
Preferably, the groove of the self-supporting covered wire optical cable is formed by an arc shape on the side of the reinforcing member and an arc shape on the side of the communication optical unit.
Preferably, the groove of the self-supporting rubber-insulated-wire optical cable faces the direction of the communication optical unit.
In general, compared with the prior art, the above technical solution contemplated by the present invention can achieve the following beneficial effects:
the self-supporting rubber-insulated-wire optical cable provided by the invention simplifies the structure of the existing rubber-insulated-wire optical cable, cancels the design of the sheaths and the reinforcing pieces of the two butterfly wings, adopts the reinforcing pieces to be used as suspension wires at the same time, and meets the self-supporting design of the outdoor rubber-insulated-wire optical cable; and a butterfly-shaped sheath is eliminated, the communication optical unit is close to the reinforcing piece and is arranged in a straight manner, so that the tensile property is ensured, and lateral pressure is shared by one side of the reinforcing piece, so that the pressure resistance of the optical cable is improved. On the other hand, as the cable diameter is reduced, the bending performance of the cable meets the indoor wiring requirement.
The preferable scheme adopts the outer sheath on one side of the reinforcement of the self-supporting rubber-insulated-wire optical cable and one side of the communication optical unit and adopts an asymmetric arc design, so that the curvature radius of the outer sheath on one side of the reinforcement is larger than that of the outer sheath on one side of the communication optical unit, and when the rubber-insulated-wire optical cable is stressed under lateral pressure, the rubber-insulated-wire optical cable can be in a stressed state on one side of the reinforcement due to unbalanced stress, so that more lateral pressure can be shared, and the influence of the lateral pressure on the rubber-insulated-wire communication optical unit is reduced.
Especially, when the reinforcing member side and the communication light unit side adopt the arc design, the arc radius of the communication light unit side is satisfied
When the following conditions are met, the communication optical unit is hardly affected by lateral pressure caused by winding even when the communication optical unit is mounted on a cement column in a winding manner. The winding installation is one of the most common situations that the rubber-insulated optical cable is broken due to lateral pressure, so that the asymmetric design of the invention can effectively reduce the phenomenon that the rubber-insulated optical cable is broken due to lateral pressure when the rubber-insulated optical cable is installed outdoorsThe fiber probability reduces the installation and maintenance cost on the whole. The conditions are as follows: when the self-supporting rubber-insulated-wire cable reinforcement side arc line and the communication light unit side arc line are respectively tightly attached to the circumference corresponding to the cement rod cross section circumference, the arc line track of the self-supporting rubber-insulated-wire cable communication light unit side is not more than the circumference and the external common tangent line segment of the self-supporting rubber-insulated-wire cable reinforcement side arc line.
According to the preferable scheme, the communication optical unit with the eccentric design is adopted, so that the geometric center of the cross section of the communication optical unit is positioned between the centers of circles of arcs on one sides of the added and forced communication optical unit, and the communication optical unit is close to the reinforcing piece.
Drawings
Fig. 1 is a schematic structural diagram of a self-supporting rubber-insulated optical cable provided in embodiment 1 of the present invention;
fig. 2 is a schematic structural diagram of a self-supporting rubber-insulated optical cable provided in embodiment 2 of the present invention;
FIG. 3 is a schematic structural diagram of a self-supporting rubber-insulated fiber optic cable according to embodiment 3 of the present invention;
FIG. 4 is a schematic structural diagram of a self-supporting rubber-insulated fiber optic cable according to embodiment 4 of the present invention;
FIG. 5 is a schematic cross-sectional projection of a self-supporting covered wire cable of example 5 of the present invention wrapped around a concrete column.
The same reference numbers will be used throughout the drawings to refer to the same or like elements or structures, wherein: 1 is a reinforcing member, 2 is a communication optical unit, 3 is an outer sheath, 01 is a wound self-supporting rubber-insulated optical cable, and the radius of the circular arc at one side of the reinforcing member is
The radius of the arc on one side of the communication optical unit is
02 is a wound self-supporting rubber-insulated optical cable, 03 is an optical cable installation cement column with the radius of
。
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
The rubber-insulated-wire optical cable, also known as butterfly-shaped optical cable, its cross section shape is like butterfly and gets its name, its both wings have reinforced core, the middle position is the communication optical unit, have optical cable external diameter small, light in weight, with low costs, soft performance and characteristic good of bending property, solve the best alternative product in FTTX network; a traditional outdoor rubber-insulated-wire optical cable is a self-supporting rubber-insulated-wire optical cable, a thick steel wire suspension wire is additionally arranged on one side of a common rubber-insulated-wire optical cable, and other structures are not changed. And the increase of thick steel wire suspension wire causes the price cost of outdoor rubber-insulated-wire cable to be close to twice of indoor rubber-insulated-wire cable, and in order to save the cost, indoor wiring adopts ordinary rubber-insulated-wire cable, and outdoor wiring adopts self-supporting rubber-insulated-wire cable, and the two pass through branch fine case or splice closure transition, and it continues and can lead to transmission loss or cost to increase.
Considering that indoor wiring close to a user is the most complex link in an optical fiber access project, the technical challenge of the rubber-insulated optical cable is the requirement of indoor wiring on the bending performance and tensile performance of the optical cable at an indoor part and the requirement of outdoor environment on the tensile performance and pressure resistance of the optical cable at an outdoor part. The invention adopts the suspension wire of the self-supporting rubber-insulated optical cable and simultaneously serves as an optical cable reinforcing member by combining the characteristics of the outdoor self-supporting rubber-insulated optical cable, and cancels a butterfly-shaped sheath and the reinforcing member in the sheath.
The invention provides a self-supporting rubber-insulated-wire optical cable which comprises a reinforcing piece, a communication optical unit and an outer sheath; wherein:
the reinforcing piece only keeps the suspension wire of the original self-supporting optical cable, the reinforcing pieces on two wings of the butterfly-shaped sheath are eliminated, and a structure which is parallel to the communication optical unit and is vertically arranged is adopted, so that the requirement on indoor and outdoor tensile performance is met, the butterfly-shaped sheath is eliminated, the communication optical unit and the suspension wire unit are closer, and when the optical cable bears pressure, the suspension wire unit can share the pressure more effectively. More importantly, because the butterfly-shaped sheath and the reinforcing parts (metal reinforcing parts such as steel wires and steel strands or non-metal reinforcing parts such as FRP) on the two wings of the butterfly-shaped sheath are eliminated, the cost is greatly reduced and is equivalent to that of the existing indoor butterfly-shaped optical cable. The tensile property, the compression resistance and the cost advantage are combined, the requirements of indoor and outdoor rubber-insulated-wire cables are met, the cables can be directly wired into the home from the outside, and the requirements of construction equipment such as transmission loss, fiber distribution boxes and splice boxes and the maintenance cost caused by connection are reduced. On the whole, compared with the existing indoor butterfly-shaped optical cable or the existing outdoor self-supporting rubber-covered wire optical cable, the technical scheme of the invention does not influence the realization of all functions, reduces the manufacturing cost compared with the existing self-supporting rubber-covered wire optical cable, reduces the transmission loss for the whole optical fiber transmission system and reduces the construction and maintenance cost.
Adopt the suspension wire as the reinforcement in this scheme, satisfy tensile, compressive property demand simultaneously, so preferred material is thick steel wire. The rubber-insulated optical cable generally has a smaller excess length of optical fiber or is a tight-sleeved communication optical unit without excess length. Therefore, the tensile modulus of the suspension wire is better than that of the communication optical unit, and the suspension wire and the communication optical unit form a straight arrangement, so that the communication optical unit is protected from being influenced slightly under the action of external tension. It is preferable to use a thick steel wire having a relatively high tensile strength as the suspension wire and the tensile reinforcement member.
Further, in order to improve the pressure resistance and reduce the optical fiber pressure loss caused by the installation process in the outdoor installation environment, the outer shape of the sheath is processed to have an asymmetric arc shape, an arc line with a larger curvature radius is formed on one side of the reinforcement, and an arc line with a smaller curvature radius is formed on one side of the communication optical unit, because the curvature radius of one side of the communication optical unit is smaller, the stable state formed when the sheath is pressed is that the pressure is distributed on the side with the larger curvature radius, namely, on one side of the reinforcement, so that the pressure born by the communication optical unit is effectively reduced through the pressure distribution, and the influence of the external pressure on the optical fiber is reduced, for example, the water drop type structure is shown in fig. 2. In a preferred structure, the shape of the sheath is designed to be a round shape which is easy to process, and two sections of sheaths are directly spliced to form an 8-shaped or gourd-shaped shape, as shown in fig. 3 and 4. Wherein 8 font structure is natural, has the characteristics of easily peeling off, convenient construction, and the structure of calabash shape, because the sheath of communication optical unit and its overcoat is close to reinforcer and its overcoat sheath more in geometrical structure, consequently the partial pressure effect of reinforcer is more obvious, and under the same condition, the compressive property of optical cable has more the advantage. The circular arc radius of preferred reinforcement one side is 1.3 to 1.5 times of the circular arc radius of communication optical unit one side, guarantees that optical unit surveys can not weaken the flat characteristic of rubber-insulated-wire cable because of the diameter undersize, and easy rotation, distortion guarantee the pressure distribution effect that asymmetric structure brought simultaneously.
The need for further improved protection of the communication optical unit may be achieved by an off-core arrangement of the communication optical unit with respect to the jacket, and the stiffener being arranged concentrically with the jacket, i.e. the radius of the arc of one side of the stiffener being arranged concentrically with the stiffener; the geometric center of the cross section of the communication optical unit is positioned between the circle centers of circles where the circular arcs on one sides of the communication optical unit are imposed, so that the communication optical unit is closer to the reinforcing piece, and the pressure resistance is improved. Under the general condition, the cross section of the reinforcing piece or the suspension wire of the rubber-insulated-wire optical cable is circular, the communication optical unit is circular or approximately circular, when the diameter of the cross section of the reinforcing piece is larger than the maximum value of the cross section size of the communication optical unit, the lateral pressure on the communication optical unit can be effectively avoided by matching with the asymmetric arc design of the outer sheath, and the optical fiber is protected from pressure loss under the common construction and use environments.
Especially for the outdoor cement pole installation, the rubber-insulated-wire optical cable is fixed on the cement pole in a winding fixing mode, a twisting fixing mode and other fixing modes, so that the optical fiber is likely to be pressed to cause fiber breakage, engineering construction is seriously influenced, and construction cost is greatly increased.
We have observed that the optical fiber provided by the present invention, when wound on a cement pole in an asymmetric configuration, can further reduce the lateral pressure of the optical cable winding on the optical communication unit by means of the physical dimension design. The communication optical unit is hardly affected by the optical cable winding when the following conditions are satisfied: when the self-supporting rubber-insulated-wire cable reinforcement side arc line and the communication light unit side arc line are respectively tightly attached to the circumference corresponding to the cement rod cross section circumference, the arc line track of the self-supporting rubber-insulated-wire cable communication light unit side is not more than the circumference and the external common tangent line segment of the self-supporting rubber-insulated-wire cable reinforcement side arc line.
Typically, especially for the self-supporting rubber-insulated-wire cable strength member side arc and the communication optical unit side arc, which are both arcs, the above condition can be specifically described as the radius of the arc of the communication optical unit side of the outer sheath
The following conditions are satisfied, and the pressure effect caused by winding is hardly received:
wherein the content of the first and second substances,
is the radius of the arc on the side of the reinforcement of the outer sheath,
the cross section radius of the cement pole is installed outside the rubber-insulated-wire cable chamber.
When the optical cable is wound on the cement pole, the cross section projection of the optical cable on the cement pole as shown in figure 5 and the wound optical cable can be simplified into two tangent circles with the radius of the two tangent circles
And
the outer sheath is made of a common material, the elasticity of the sheath is ignored, the components are taken as rigidity for carrying out set calculation, and when the outer sheath is sleeved on the arc radius at one side of the communication optical unit
When the condition is met, the reinforcing piece is positioned in a gap between the circumference of one side of the reinforcing piece, the external common tangent line and the cement rod, and cannot be pressed by the wound optical cable. The wound cable is also pressed by the strength member side due to the principle described above. Therefore, even if the optical cable is wound and fixed on a cement pole installed outdoors, the probability of fiber breakage is greatly reduced, and the optical cable is convenient to install, low in cost, stable and reliable.
Meanwhile, in order to facilitate installation of the rubber-insulated-wire optical cable, grooves are generally formed in two sides of the outer sheath and used for stripping the optical cable. Unlike some butterfly-shaped optical cables, which need to be manufactured with wedge-shaped grooves, the invention adopts two side arcs which are directly intersected to form the grooves for stripping the optical cables. Preferably, the groove faces the communication light unit, i.e. the direction of the extension line of the groove split is between the groove and the tangent line at both sides of the communication light unit.
The communication optical unit is a tight-sleeved optical fiber or a loose sleeve sleeved on the tight-sleeved optical fiber, is a single core, double core, four core or multi core, and is circular or similar to a circle.
The following are examples:
example 1
As shown in fig. 1, the self-supporting rubber-insulated-wire cable provided in this embodiment includes a strength member, a communication optical unit, and an outer sheath;
the reinforcing piece is a phosphatized thick steel wire with the diameter of 1 mm; the reinforcing piece is vertically placed;
the communication optical unit is a single-core tight-sleeved optical fiber; the reinforcing member is arranged flat with the communication light unit;
the outer sheath is 8-shaped; one side of the reinforcing piece is tightly attached to the outer side of the phosphatized thick steel wire, the thickness of the reinforcing piece is 0.5mm, and the arc curvature radius of one side of the reinforcing piece is 1.0 mm; the thickness of the communication optical unit side is 0.25mm, a cavity with the diameter of 1mm is formed, the communication optical unit is accommodated, namely the communication optical unit is covered on the outer side, and the curvature radius of the communication optical unit side is 0.75 mm.
The cement column is used for mounting
130mm, thus allowing the radius of the arc on one side of the communication unit to be:
。
therefore, the optical cable designed by the embodiment has good pressure resistance, particularly winding side pressure resistance.
Example 2
As shown in fig. 2, the self-supporting covered wire optical cable provided by the present embodiment includes a strength member, a communication optical unit and an outer sheath;
the reinforcing piece is a phosphatized thick steel wire with the diameter of 1 mm; the reinforcing piece is vertically placed;
the communication optical unit is a single-core tight-sleeved optical fiber; the reinforcing member is arranged flat with the communication light unit;
the cross section of the outer sheath is in a water-drop shape, a circle where the circular arc on one side of the reinforcement is located is tangent to a circle where the circular arc on one side of the communication optical unit is located, the cross section appearance of the outer sheath is composed of two side circumferences and an external common tangent line segment of the circle where the circumference is located, the curvature radius of the circular arc on one side of the reinforcement is 1.0mm, the curvature radius of one side of the communication optical unit is 0.75mm, and a groove is formed in the middle of the external common tangent line segment and used for stripping the optical cable; one side of the reinforcing piece is tightly attached to the outer side of the phosphatized thick steel wire, the thickness of the reinforcing piece is 0.5mm, and the arc curvature radius of one side of the reinforcing piece is 1.0 mm; on one side of the communication optical unit, the outer sheath is tightly attached to the outer side of the tightly sleeved optical fiber, and the curvature radius of one side of the communication optical unit is 0.75. The reinforcing piece is concentrically arranged in a circle where the circumference of one side of the outer sheath reinforcing piece is located, the communication light unit is eccentrically arranged in a circle where the circumference of one side of the concentric light unit is located, and the distance between the central axis of the communication light unit and the central axis of the reinforcing piece is 1.0 mm.
The cement column is used for mounting the tip diameter
130mm, thus allowing the radius of the arc on one side of the communication unit to be:
。
therefore, the optical cable designed by the embodiment has good pressure resistance, particularly winding side pressure resistance.
Example 3
As shown in fig. 3, the self-supporting rubber-insulated-wire cable provided in this embodiment includes a strength member, a communication optical unit, and an outer sheath;
the reinforcing piece is a phosphatized thick steel wire with the diameter of 1 mm; the reinforcing piece is vertically placed;
the communication optical unit is a single-core tight-sleeved optical fiber; the reinforcing member is arranged flat with the communication light unit;
the outer sheath is in a gourd-shaped cross section, a circle where the arc on one side of the reinforcement is located and an ellipse circle where the elliptical arc on one side of the communication optical unit is located form a cross section periphery, the curvature radius of the arc on one side of the reinforcement is 1.0mm, the curvature radius of one side of the communication optical unit is 0.75mm, the ellipse where the elliptical arc on one side of the communication optical unit is located, the major axis of the ellipse is 4.0mm, the minor axis of the ellipse is 3.0mm, the major axis of the ellipse is intersected with the circle where the arc on one side of the reinforcement is located, the distance between the center of the ellipse and the circle center of the arc is 1mm, and the elliptical arc and the arc form a groove for stripping the optical cable; one side of the reinforcing piece is tightly attached to the outer side of the phosphatized thick steel wire, the thickness of the reinforcing piece is 0.5mm, and the arc curvature radius of one side of the reinforcing piece is 1.0 mm; on one side of the communication optical unit, the outer sheath is tightly attached to the outer side of the tightly sleeved optical fiber, and the curvature radius of one side of the communication optical unit is 0.75. The reinforcing piece is concentrically arranged in a circle where the circumference of one side of the outer sheath reinforcing piece is located, the communication light unit is eccentrically arranged in a circle where the circumference of one side of the concentric light unit is located, and the distance between the central axis of the communication light unit and the central axis of the reinforcing piece is 1.0 mm.
Example 4
As shown in fig. 4, the self-supporting rubber-insulated-wire cable provided in this embodiment includes a strength member, a communication optical unit, and an outer sheath;
the reinforcing piece is a phosphatized thick steel wire with the diameter of 1 mm; the reinforcing piece is vertically placed;
the communication optical unit is a loose tube optical unit which receives a dual-core optical fiber; the reinforcement member is aligned with the communication light unit;
the cross section of the outer sheath is in a gourd shape, a circle where an arc on one side of the reinforcement is located is intersected with a circle where an arc on one side of the communication optical unit is located, the distance between the centers of the circles is 1.25mm, the cross section appearance of the outer sheath is composed of arc sections on two sides, the curvature radius of the arc on one side of the reinforcement is 1.0mm, the curvature radius of one side of the communication optical unit is 0.75mm, and the arc sections are intersected to form a groove for stripping the optical cable; one side of the reinforcing piece is tightly attached to the outer side of the phosphatized thick steel wire, the thickness of the reinforcing piece is 0.5mm, and the arc curvature radius of one side of the reinforcing piece is 1.0 mm; on one side of the communication light unit, the outer sheath is tightly attached to the outer side of the loose tube, and the curvature radius of one side of the communication light unit is 0.75. The reinforcing piece is concentrically arranged in a circle where the circumference of one side of the outer sheath reinforcing piece is located, the communication light unit is eccentrically arranged in a circle where the circumference of one side of the concentric light unit is located, and the distance between the central axis of the communication light unit and the central axis of the reinforcing piece is 1.0 mm.
The cement column is used for mounting the tip diameter
130mm, thus allowing the radius of the arc on one side of the communication unit to be:
。
therefore, the optical cable designed by the embodiment has good pressure resistance, particularly winding side pressure resistance.
Example 5
When the optical cable is wound on the cement pole, the cross section projection of the optical cable on the cement pole as shown in figure 5 and the wound optical cable can be simplified into two tangent circles with the radius of the two tangent circles
And
the outer sheath communication optical unit is arranged on the outer tangent line of the optical cable, the arc on one side of the outer sheath communication optical unit is arranged between the cement rod, the arc on one side of the reinforcing piece of the outer sheath and the wound optical fiber, the radius of the arc is equal to that of the optical fiber
Since the sheath is generally made of a uniform material, the elasticity of the sheath is ignored, and the above components are used as the rigidity to perform the collective calculation.
Order to
、
、
Respectively as follows: the outer common tangent length of the circumference of the cross section of the cement rod and the circumference of one side of the self-supporting rubber-covered wire optical cable reinforcement, the outer common tangent length of the circumference of the cross section of the cement rod and the circumference of one side of the self-supporting rubber-covered wire optical cable communication optical unit, and the outer common tangent length of the circumference of one side of the self-supporting rubber-covered wire optical cable reinforcement and the circumference of one side of the self-supporting rubber-covered wire optical cable communication optical unit.
In the limit situation, when the circumference of the cross section of the cement rod, the circumference of the reinforcing part on one side of the self-supporting rubber-insulated-wire cable and the circumference of the communication optical unit on one side of the self-supporting rubber-insulated-wire cable share the outer common tangent line, the circumference of the communication optical unit on one side of the self-supporting rubber-insulated-wire cable is the maximum value of the circumference of the communication optical unit on one side of the self-supporting rubber-insulated-wire cable in the state, and the arc on one side of the communication optical unit can be ensured to be positioned in the gap among the circumference of the reinforcing part on one side, the outer common tangent line and the cement rod.
The geometrical relationship is satisfied:
simultaneously, the method comprises the following steps:
therefore, solve this moment
As its maximum value
Comprises the following steps:
therefore, the method comprises the following steps: when the outer sheath is arranged at the arc radius of one side of the communication optical unit
When the following conditions are met, the reinforcing piece is positioned in a gap between the circumference of one side of the reinforcing piece, the external common tangent and the cement rod:
the communication optical unit is not pressed by winding even if the communication optical unit is wound and mounted on the cement column.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (9)
1. A self-supporting rubber-insulated-wire cable is characterized by comprising a reinforcing piece, a communication optical unit and an outer sheath; the reinforcement is formed of a laid-open metal reinforcement serving as a suspension wire, the reinforcement being arranged flat with the communication light unit; the outer sheath is clung to the outer side of the reinforcing part and is covered on the outer side of the communication optical unit;
the outer protective sleeve is respectively in an arc shape on one side of the reinforcing part and one side of the communication optical unit; the radius of curvature of the arc on one side of the stiffener is greater than the radius of curvature of the arc on one side of the communication optical unit;
the external dimension of the cross section of the self-supporting rubber-insulated-wire optical cable meets the following conditions:
when the self-supporting rubber-insulated-wire cable reinforcement side arc line and the communication light unit side arc line are respectively tightly attached to the circumference corresponding to the cement rod cross section circumference, the arc line track of the self-supporting rubber-insulated-wire cable communication light unit side is not more than the circumference and the external common tangent line segment of the self-supporting rubber-insulated-wire cable reinforcement side arc line.
2. The self-supporting covered wire optical cable of claim 1 wherein the metal strength member has a tensile modulus greater than the communication optical unit tensile modulus.
3. The self-supporting covered wire optical cable according to claim 1, wherein the outer sheath has two circular arcs in a figure 8 or a gourd shape, and a radius of the circular arc at the side of the strength member is larger than a radius of the circular arc at the side of the communication optical unit.
4. The self-supporting covered wire optical cable of claim 3 wherein the radius of the arc of the strength member side is 1.3 to 1.5 times the radius of the arc of the communication optical unit side.
5. The self-supporting covered wire cable of claim 3 wherein the radius of the arc of one side of the strength member is arranged concentrically with the strength member; the geometric center of the cross section of the communication light unit is positioned between the centers of circles where the arcs on one side of the communication light unit are forced.
6. The self-supporting covered wire optical cable of claim 5 wherein the strength member is circular in cross-section and has a diameter greater than the maximum cross-sectional dimension of the optical communication unit.
7. The self-supporting covered wire optical cable of claim 1, wherein the outer sheath has two circular arcs in an 8-shape or a gourd-shape, a radius of a circular arc at one side of the reinforcing member is larger than a radius of a circular arc at one side of the communication optical unit, and the outer sheath satisfies the following condition:
and R is the arc radius of the outer sheath on one side of the reinforcement, and R is the radius of the cross section of the cement rod installed outside the rubber-insulated-wire cable chamber.
8. The self-supporting covered wire optical cable of claim 1, wherein grooves are formed on both sides of the cross section of the outer sheath, and the grooves face the direction of the communication optical unit.
9. The self-supporting covered wire optical cable of claim 8 wherein the groove is formed by an arc on the strength member side and an arc on the communications optical unit side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210206037.4A CN114325991B (en) | 2022-03-04 | 2022-03-04 | Indoor and outdoor general self-supporting rubber-insulated-wire cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210206037.4A CN114325991B (en) | 2022-03-04 | 2022-03-04 | Indoor and outdoor general self-supporting rubber-insulated-wire cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114325991A CN114325991A (en) | 2022-04-12 |
| CN114325991B true CN114325991B (en) | 2022-06-21 |
Family
ID=81029947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210206037.4A Active CN114325991B (en) | 2022-03-04 | 2022-03-04 | Indoor and outdoor general self-supporting rubber-insulated-wire cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114325991B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114895416A (en) * | 2022-05-06 | 2022-08-12 | 杭州富通通信技术股份有限公司 | Optical fiber ribbon cable |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101458382A (en) * | 2008-11-28 | 2009-06-17 | 烽火通信科技股份有限公司 | 8-shaped self-bearing aerial fiber cable catenary dissector |
| CN201387501Y (en) * | 2009-03-13 | 2010-01-20 | 西古光纤光缆有限公司 | Small high-performance short-distance FTTH outdoor self-supporting optical cable |
| CN102621647A (en) * | 2012-02-07 | 2012-08-01 | 常熟市谷雷特机械产品设计有限公司 | Irregular cable |
| CN202631809U (en) * | 2012-05-10 | 2012-12-26 | 江苏南方通信科技有限公司 | All dielectric single core leading-in optical cable |
| CN202631816U (en) * | 2012-06-06 | 2012-12-26 | 广东亨通光电科技有限公司 | Self-supporting simple structure optical cable |
| CN202649567U (en) * | 2012-06-26 | 2013-01-02 | 成都亨通光通信有限公司 | 8-shaped self-supporting type aerial optical cable |
| CN203133338U (en) * | 2012-12-10 | 2013-08-14 | 沈阳亨通光通信有限公司 | Integrated FTTH indoor and outdoor optical cable |
| CN203981928U (en) * | 2013-11-28 | 2014-12-03 | 江苏七宝光电集团有限公司 | High temperature flame-proof covered wire cable |
| CN104570245A (en) * | 2014-12-16 | 2015-04-29 | 成都亨通光通信有限公司 | Novel 8-shaped self-supporting optical cable |
| CN105676397A (en) * | 2016-04-26 | 2016-06-15 | 长飞光纤光缆股份有限公司 | Optical cable with external symmetrical reinforcements |
| CN105866908A (en) * | 2016-06-08 | 2016-08-17 | 沈阳亨通光通信有限公司 | Side-slot-reinforced leading-in optical cable and production process |
| CN207164325U (en) * | 2017-08-29 | 2018-03-30 | 德阳汇川科技有限公司 | A kind of water-drop-shaped self-support cable |
| CN108549137A (en) * | 2018-06-26 | 2018-09-18 | 浙江盛安电力科技有限公司 | A kind of safety-type self-bearing type butterfly optical cable convenient for stripping |
| CN109765662A (en) * | 2019-01-24 | 2019-05-17 | 通鼎互联信息股份有限公司 | A kind of insect prevention bird butterfly leading in cable |
-
2022
- 2022-03-04 CN CN202210206037.4A patent/CN114325991B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101458382A (en) * | 2008-11-28 | 2009-06-17 | 烽火通信科技股份有限公司 | 8-shaped self-bearing aerial fiber cable catenary dissector |
| CN201387501Y (en) * | 2009-03-13 | 2010-01-20 | 西古光纤光缆有限公司 | Small high-performance short-distance FTTH outdoor self-supporting optical cable |
| CN102621647A (en) * | 2012-02-07 | 2012-08-01 | 常熟市谷雷特机械产品设计有限公司 | Irregular cable |
| CN202631809U (en) * | 2012-05-10 | 2012-12-26 | 江苏南方通信科技有限公司 | All dielectric single core leading-in optical cable |
| CN202631816U (en) * | 2012-06-06 | 2012-12-26 | 广东亨通光电科技有限公司 | Self-supporting simple structure optical cable |
| CN202649567U (en) * | 2012-06-26 | 2013-01-02 | 成都亨通光通信有限公司 | 8-shaped self-supporting type aerial optical cable |
| CN203133338U (en) * | 2012-12-10 | 2013-08-14 | 沈阳亨通光通信有限公司 | Integrated FTTH indoor and outdoor optical cable |
| CN203981928U (en) * | 2013-11-28 | 2014-12-03 | 江苏七宝光电集团有限公司 | High temperature flame-proof covered wire cable |
| CN104570245A (en) * | 2014-12-16 | 2015-04-29 | 成都亨通光通信有限公司 | Novel 8-shaped self-supporting optical cable |
| CN105676397A (en) * | 2016-04-26 | 2016-06-15 | 长飞光纤光缆股份有限公司 | Optical cable with external symmetrical reinforcements |
| CN105866908A (en) * | 2016-06-08 | 2016-08-17 | 沈阳亨通光通信有限公司 | Side-slot-reinforced leading-in optical cable and production process |
| CN207164325U (en) * | 2017-08-29 | 2018-03-30 | 德阳汇川科技有限公司 | A kind of water-drop-shaped self-support cable |
| CN108549137A (en) * | 2018-06-26 | 2018-09-18 | 浙江盛安电力科技有限公司 | A kind of safety-type self-bearing type butterfly optical cable convenient for stripping |
| CN109765662A (en) * | 2019-01-24 | 2019-05-17 | 通鼎互联信息股份有限公司 | A kind of insect prevention bird butterfly leading in cable |
Non-Patent Citations (1)
| Title |
|---|
| FTTH工程中的主干光缆、引入光缆和入户光缆;万冰等;《中国通信学会2006年光缆电缆学术年会论文集》;20060630;第199-206页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114325991A (en) | 2022-04-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100515061C (en) | Fiber optic cable having a strength member | |
| CN114325991B (en) | Indoor and outdoor general self-supporting rubber-insulated-wire cable | |
| KR20040074864A (en) | Methods for Producing Optical Cable by Straight Arrangement of Aramid Yarn And thereof Optical Cable | |
| WO2020004230A1 (en) | Optical fiber cable | |
| CN115079361A (en) | Butterfly-shaped leading-in optical cable with square cross section for pipeline | |
| CN209895042U (en) | Optical cable | |
| JPH0242407A (en) | Mode scrambler | |
| CN102621647B (en) | Irregular cable | |
| KR20010045604A (en) | Loose tube plenum cable | |
| CN204790129U (en) | Center sleeve pipe structure optical cable | |
| CN201222111Y (en) | Self-bearing covered wire optical cable easy to bifurcate | |
| EP1324090A1 (en) | Central tube cable for optical fibers with support member | |
| CN208861023U (en) | Micro-tubular optical cable | |
| WO2020037657A1 (en) | High-strength and corrosion-resistant optical fiber composite overhead ground wire in aluminum-clad pbt structure | |
| CN109001878A (en) | A kind of flexibility all dielectric self-supporting butterfly leading in cable | |
| CN217587700U (en) | Butterfly-shaped optical cable | |
| CN216901090U (en) | Air-blowing optical cable | |
| CN210864135U (en) | Side pressure resistant outdoor overhead and indoor wiring optical cable | |
| CN220473748U (en) | Fusiform long-span wind-resistant self-supporting optical cable | |
| CN217333691U (en) | Optical fiber composite overhead ground wire | |
| CN213023689U (en) | Skeleton type OPGW optical cable | |
| CN215729006U (en) | Lightning protection flat optical cable | |
| CN220252917U (en) | Optical fiber composite overhead phase wire | |
| CN215375889U (en) | OPGW (optical fiber composite overhead ground wire) inter-gear continuous joint box | |
| CN219349208U (en) | Optical cable |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |