CN208271609U - A kind of direct buried nonmetallic comprehensive shielded cable for digital communication of reinforcement steel-tape armouring - Google Patents

Abstract

A kind of direct buried nonmetallic comprehensive shielded cable for digital communication of reinforcement steel-tape armouring, including pair twist insulated wire group, it is characterized in that pair twist insulated wire group carries out stranding, cable core is outer and wrapped inhibiting tape, there are clad aluminum foil and braiding brass wire shielding outside band, there are halogen-free and low-smoke flame-retardant polyolefin sheath and galvanized steel strip armouring in its outside, outermost layer has halogen-free and low-smoke flame-retardant polyolefin oversheath, two pair twist insulated wire cores in pair twist insulated wire group are in back twist pair twist, and there are also a nonmetallic fiberglass-reinforced plastic levers parallel with pair twist insulated wire group for cable conductor centre.

Description

A kind of direct buried nonmetallic comprehensive shielded cable for digital communication of reinforcement steel-tape armouring

Technical field

The utility model relates to digital cables, are more specifically a kind of direct buried nonmetallic reinforcement steel-tape armouring comprehensive screen Cover communication cable.

Background technique

Currently, internet communication signal transmits close user terminal mainly based on common pair twist copper core subscriber line communication, no It is able to satisfy the requirement of outdoor direct buried laying.With the fast development of internet, user is to high sharpness video and lossless sound quality Audio signal, multimedia, Internet of Things, cloud computing, the demand presentation of the broadband data transmission information of large capacity are skyrocketed through, in a hurry It needs digital transmission line to extend outward, and adapts to the requirement of different laying environment, it is full to obtain more faster data informations The demand of sufficient big data transmission capacity.

Summary of the invention

The purpose of the utility model is to overcome deficiencies existing for existing Digital Subscriber Line, make digital transmission line from indoor toward room Other places is lower to be extended, and the requirement of transmission high speed, Large Volume Data and high sharpness video can be reached, and meet direct buried, cable duct, The requirement of tunnel laying provides a kind of direct buried adaptation outdoor, cable duct, tunnel laying, and tension, lateral pressure resistant, anti-electricity The horizontal pair twist cable for digital communication of magnetic disturbance.

The utility model is realized in the following way: a kind of direct buried nonmetallic reinforcement steel-tape armouring is comprehensive shielded Cable for digital communication, including pair twist insulated wire group, it is characterised in that pair twist insulated wire group carries out stranding, wrapped fire-retardant outside cable core Band, band have clad aluminum foil and braiding brass wire shielding, outside to have halogen-free and low-smoke flame-retardant polyolefin sheath and galvanized steel strip outside Armouring, outermost layer have halogen-free and low-smoke flame-retardant polyolefin oversheath, and two pair twist insulated wire cores in pair twist insulated wire group are in back twist Pair twist has a nonmetallic fiberglass-reinforced plastic lever parallel with pair twist insulated wire group among cable conductor.

The beneficial effects of the utility model are: a kind of direct buried nonmetallic comprehensive shielded digital communication of reinforcement steel-tape armouring Cable, can support the requirement of high speed kilomega network, large-capacity data transmission, and meet the requirement of outdoor direct buried laying, mention For a kind of outdoor direct buried, cable duct of adaptation, tunnel laying, weather-proof cold-resistant, environment friendly non-halogen low-smoke and flame retardant, and it is tension, anti- Side pressure, electromagnetism interference horizontal pair twist cable for digital communication, significantly expand extend gigabit networking transmission range and space model It encloses.

Detailed description of the invention

The present invention will be further described with reference to the accompanying drawing.

Fig. 1 is the cross-sectional view of the utility model.

In figure, 1. halogen-free and low-smoke flame-retardant polyolefin oversheaths, 2. steel-tape armourings, the interior shield of 3. halogen-free and low-smoke flame-retardant polyolefins Layer, the shielding of 4. proof copper-wire braideds, the shielding of 5. clad aluminum foils, 6. fire-retardant bands, 7. twisted pair wire groups, 8. polyolefin insulation layers, 9. bronze medals are led Body, 10. nonmetallic fiberglass-reinforced plastic levers.

Specific embodiment

Product type specification as shown in Figure 1, which is that a kind of outdoor of WDZC-HSFYYP23 4 × 2 × 0.52 is nonmetallic, to be added The comprehensive shielded cable for digital communication of strong steel-tape armouring, including pair twist insulated wire group 7, the nonmetallic glass fibers in one, twisted pair wire group center Reinforced plastics bar 10 is tieed up, fire-retardant band 6 and clad aluminum foil shielding 5, clad aluminum foil have braiding copper wire screen outside outside twisted pair wire group cable core Cover 4, shielding is outer halogen-free and low-smoke flame-retardant polyolefin sheath 3, have galvanized steel strip 2 outside sheath, outermost have one layer it is weather-proof Resist cold black halogen-free low-smoke flame-proof polyolefin oversheath 1, and two insulated copper conductors 9 in pair twist insulated wire group 7 are in back twist pair twist.

When manufacture, copper bar passes through the multiple drawing of wire drawing machine, pulls into nominal diameter and is the copper conductor 9 of 0.52mm, and moves back simultaneously Then igneous flexible conductor squeezes the polyolefin insulation layer 8 of one layer of different colours with plastic extruder on conductor simultaneously, thus makes At insulated wire cores.Two insulated wire cores are twisted on high speed back twist pair twister with fine pith as pair twist insulated wire group 7;4 pairs right Twisted wire group center is vertical to put a nonmetallic fiberglass-reinforced plastic lever 10, and stranding together, while 6 He of wrapped one layer of inhibiting tape One layer of clad aluminum foil 5 of longitudinal wrap；Aluminium foil external application braider weaves shielding layer of copper wires 4；Shielded layer exterior plastic extruder squeezes one layer of nothing The low cigarette polyolefin flame-retardant sheath 3 of halogen；Sheath external application armoring machine gap is around galvanized steel strip 2 of double-baging；Finally use plastic extrusion Machine squeezes one layer of weather-proof cold-resistant halogen-free and low-smoke flame-retardant polyolefin oversheath 1, and in jacket surface spray printing identification marking, i.e. manufacture is completed ?.

Claims (2)

1. a kind of direct buried nonmetallic comprehensive shielded cable for digital communication of reinforcement steel-tape armouring, including pair twist insulated wire group, It is characterized in that pair twist insulated wire group carries out stranding, wrapped inhibiting tape outside cable core, band has clad aluminum foil and braiding brass wire shielding outside, There are halogen-free and low-smoke flame-retardant polyolefin sheath and galvanized steel strip armouring in its outside, and outermost layer has to be protected outside halogen-free and low-smoke flame-retardant polyolefin It covers, two pair twist insulated wire cores in pair twist insulated wire group are in back twist pair twist, are had with pair twist insulated wire group simultaneously among cable conductor A capable nonmetallic fiberglass-reinforced plastic lever.

2. a kind of direct buried nonmetallic comprehensive shielded cable for digital communication of reinforcement steel-tape armouring as described in claim 1, It is characterized in that in sheath cable core thering is a nonmetallic fiberglass-reinforced plastic lever parallel with pair twist insulated wire group cable core, cable core Outer and wrapped inhibiting tape, band have clad aluminum foil and braiding brass wire shielding outside, and there is shield in halogen-free and low-smoke flame-retardant polyolefin in outside Layer.