CN202422791U - Slurry resistance high-strength shield machine cable - Google Patents

Abstract

Provided is a slurry resistance high-strength shield machine cable, comprising control cores, a ground core, and insulating main cores, wherein the three insulating main cores, with equal cross section, form a cable; two control cores and one ground core are respectively arranged among the three insulating main cores; the insulating main cores, the control cores, and the ground cores form a cable according to the 8-time pitch to be wrapped with non-woven fabrics, thereby forming a wrapping layer; the wrapping layer is wrapped with a first chloroprene rubber base inner sheath via extruding; the first chloroprene rubber base inner sheath is sequentially wrapped by a first semi-conducting layer and a second semi-conducting layer, with three monitoring cores being clamped between the first semi-conducting layer and the second semi-conducting layer; and the second semi-conducting layer is sequentially wrapped by a chloroprene rubber base inner sheath and a slurry resistance thermosetting halogen free polyolefin sheath layer via extruding. As a shield machine cable occupies narrow place and the cable has high demand for flexibility, a flexible conductor structure is adopted. As the operating environment is wet, a tin-coated copper filament is employed. The slurry resistance high-strength shield machine cable features reasonable material selection and structure and has long service lifetime.

Description

A kind of anti-mud high strength shield machine cable

Technical field

The utility model relates to a kind of cable, refers in particular to a kind of shield machine cable.

Background technology

Along with China's economy rapid growth, municipal engineering construction is like a raging fire to be carried out, and has driven the development of large quantities of plant equipment.Shield machine once excavates the open-air and underground driving jumbo of cavitation as having realization driving, the transhipment of rock slag, hole wall supporting etc., is widely used in Tunnel Engineering such as subway, railway, highway, municipal administration, water power.Shield machine construction has the automaticity height, reduce labour intensity and work load, speed of application is fast, control surface subsidence and reducing the little characteristics of above ground structure influence.The shield machine nearly 180 years history of coming out starts from Britain, develops in Japan and German, and first in China has the shield machine of independent intellectual property right and succeeded in developing in 2004, and manufacturing technology is ripe day by day thereafter.According to relevant person prediction, by 2010, the international market was about 500 to year demand of TBM, and the Chinese market demand is just near 200, and present every shield machine price is ten thousand dollars of 400-600.The shield machine cable is mainly used in the construction of underground works, and its operational environment is general relatively more abominable, and major part is in the grittiness artesian water of full section or half section, and working depth Chang Shen reaches tens of rice, and the general humidity of surrounding environment is higher, is full of dust, mud.As shield machine power source and control neural be connected with its importance of cable irreplaceablely, how to use safely and effectively increase the service life, its meaning is self-evident.

Chinese patent once disclosed " a kind of shield machine private cable " (China; Notification number CN201170962Y; December 24 2008 day for announcing); Comprise master core, core, packed layer and restrictive coating, described master core is by lining and outer master core conductor, conductor insulation, EPDM insulation and the insulation shielding of being respectively; Described ground core is by lining and outer ground wire core conductor and the ground wire core insulation of being respectively; Master core has three, and its cross section is three tangent in twos arrangements of circle, and described ground core is arranged in the point of contact outer void of master core; Master core is coated with the stranding band with the ground core, master core, be the rubber filling between core and the stranding band; The stranding band is wrapped with restrictive coating, and restrictive coating is respectively to protect, weave in the CR mixture by lining and outer to be strengthened and the CR mixture protects outward.

Chinese patent once disclosed " a kind of composite stabilizing shield cable " (China; Publication number CN101339823A; Open day on January 7th, 2009), the master core of equal number is center and coaxial being spaced with the cable axis with the ground core, and rubber sheath is extruded in outermost layer; The packing that the cross section is saddle type is provided with along the cable axis center; Packing has quantity and master core and the identical ridge of ground core quantity, the outer arc limit radius of every ridge be core semiconductive insulating barrier radius, the core insulation screen radius of serving as theme of the outer arc limit radius between adjacent ridge.

Chinese patent once disclosed a kind of " novel anti-environment environmental protection shield machine power cable " (China; Notification number CN201421731Y; March 10 2010 day for announcing), be provided with copper conductor, thermoplastic polyester elastomer TPE insulating barrier, aramid fiber tow strengthening core, flame retardant type band, polyurethane polyureas ethers elastomer outer jacket, thermoplastic polyester elastomer TPE insulating barrier is wrapped in the copper conductor outer surface and constitutes insulated wire cores; Aramid fiber tow strengthening core is set in the cable core with the insulated wire cores stranding; Filling and flame-retardant filler in the gap of cable core, wrapped flame retardant type band on the cable core extrudes polyurethane polyureas ethers elastomer outer jacket in the outside of band.

That Chinese patent once disclosed was a kind of " shield machine with optical cable core centering, places periphery jointly to be twisted into compound cable core with three power cores and a control core with composite high pressure rubber cover tension flexible cable (China; notification number CN201600956U; October 6 2010 day for announcing); Set gradually from inside to outside at the skin of compound cable core and to be rubber inner sheath, tension reinforced layer and rubber oversheath.

Chinese patent once disclosed a kind of " shield machine is strengthened soft high pressure Plastic-sheathed Cable with tension " (China; Notification number CN201607979U; October 13 2010 day for announcing); Be twisted into cable core jointly again with three power cores, set gradually rubber sheath, tension reinforced layer and rubber oversheath from inside to outside at the skin of cable core; The power core is to adopt the 5th kind of zinc-plated soft copper conductor; On zinc-plated soft copper conductor; With three layers of form of once extruding form internal layer conductive rubber screen, outer conductive rubber screens and be in internal layer conductive rubber screen and outer conductive rubber screen between the high pressure resistant second third insulation rubber layer, the copper wire that is provided with the double as ground wire in the appearance of outer conductive rubber screen adds the fibrage layer.

That Chinese patent once disclosed was a kind of " shield machine is with band control line high pressure rubber sleeve flexible cable " (China; Notification number CN201607980U; October 13 2010 day for announcing); Be twisted into cable core jointly with three power cores and one control core, said three power cores are not more than 10 with a stranded lay ratio of controlling core, and said control core is the twisted wire that stranded lay ratio is not more than 8 many control lines.

Chinese patent once disclosed a kind of " shield machine cable " (China; Notification number CN201655357U; November 24 2010 day for announcing); Comprise master core and ground core, master core comprises the master core conductor and is coated on the semiconductive conductor shield of master core conductor outer surface, ethylene propylene rubber insulated layer, semiconductive insulation screen, the ground wire core insulation layer that the ground core comprises the ground wire core conductor and is coated on ground wire core conductor outer surface successively; The master core of equal number is spaced and is twisted into cable core with the ground core; Be provided with in the outside of cable core and tighten the nonwoven fabrics belting layer that cable core is used, be filled with rubber strip between nonwoven fabrics belting layer and the cable core and in the cable core slit, be coated with neoprene inner sheath, braiding reinforced layer, neoprene oversheath in nonwoven fabrics belting layer outside successively.

Chinese patent once disclosed " a kind of cold-resistant shield cable " (China; Notification number CN201725622U; January 26 2011 day for announcing); Be coated with internal shield, ethylene propylene rubber insulated layer, outer shielding layer and braid successively at the outer surface of tin plated steel wire conductor and form master core, three master cores are triangularly arranged, and are provided with rubber at the middle part of three master cores and fill out between core, the adjacent master core and be provided with control core or optical fiber control core; Be extruded with nonwoven layer after master core, control core, optical fiber control core are stranded; Outside nonwoven layer, be coated with inner sheath, first conductive strips, second conductive strips and oversheath successively, between first conductive strips and second conductive strips, be evenly equipped with earth connection, described control core is: the outer surface at conductor is coated with fluoroplastic insulation layer formation core; Between three cores of pair twist and outer surface be provided with and fill out core and form the control core, be coated with at optical fiber and fill out sandwich layer and form optical fiber control core.

Chinese patent once disclosed a kind of " shield machine is used cable " (China; Notification number CN201741469U; February 9 2011 day for announcing), comprise master core, core and outer jacket, master core comprises master core conductor, conductor screen, insulating barrier and insulating barrier shielding by lining and outer; The ground core comprises ground wire core conductor and semiconductive coating layer, and the semiconductive coating layer is coated on outside the ground wire core conductor; Outer jacket is made up of inner sheath, braiding or wrapped reinforced layer and oversheath respectively outside being reached by the lining.

Chinese patent once disclosed " a kind of shield cable " (China; Notification number CN201758029U; March 9 2011 day for announcing), its structure serve as theme core with ground core be center and coaxial being spaced with the cable axis, rubber sheath is extruded in outermost layer; The packing that the cross section is saddle type is provided with along the cable axis center; Packing has quantity and master core and the identical ridge of ground core quantity, the outer arc limit radius of every ridge be core semiconductive insulating barrier radius, the core insulation screen radius of serving as theme of the outer arc limit radius between adjacent ridge.

Summary of the invention

The purpose of the utility model is to adopt an effective measure, and particularly to cable self-protection structure Design, improvement, a kind of anti-mud high strength shield machine cable is provided, and can increase the service life greatly.

For achieving the above object; The scheme that the invention is taked is: a kind of anti-mud high strength shield machine cable; It comprises control core, core and the insulation master core, the tinned copper wire synnema becomes strand, strand is twisted into the master core conductor again; Outside the master core conductor, extrude semiconductive internal shield, high strength second third insulating barrier, semiconductive insulation screen, shielding braid reinforced layer successively, form described insulation master core; Strand was processed type after three control line core conductors extruded the fluoroplastic insulation layer outward respectively, formed described control core; The ground wire core conductor weaves reinforced layer outward, forms described ground core; The third-class core stranding of three insulated master cores; Between three insulated master cores, carry two control cores and a ground core respectively secretly; The insulation master core with control core, core according to octuple pitch stranding after wrapped nonwoven fabrics; Form lapping layer, lapping layer extrudes the first neoprene base inner sheath outward, wrapped successively outward first semi-conductive layer of the first neoprene base inner sheath and second semi-conductive layer; Between first semi-conductive layer and second semi-conductive layer, carry three secretly and keep watch on core, outside second semi-conductive layer, extrude neoprene base inner sheath and anti-mud thermosetting halogen-free polyolefin restrictive coating successively.

Consider that the shield machine cable uses the place narrow and small, the cable bending property is had relatively high expectations, thus adopt the flexible conductor structure, because environment for use is moist, so select tinned copper wire for use.The anti-mud high strength of this kind shield machine cable, selection and rational in infrastructure, long service life.

Description of drawings

Fig. 1 is the structural representation of present embodiment.

Among the figure: 1, master core conductor, 2, the semiconductive internal shield, 3, high strength second third insulating barrier, 4, the semiconductive insulation screen; 5, shielding braid reinforced layer, 6, the control line core conductor, 7, the fluoroplastic insulation layer, 8, the ground wire core conductor; 9, braiding reinforced layer, 10, lapping layer, 11, the first neoprene base inner sheath, 12, first semi-conductive layer; 13, second semi-conductive layer, 14, keep watch on core, 15, neoprene base inner sheath, 16, anti-mud thermosetting halogen-free polyolefin restrictive coating.

Embodiment

Below in conjunction with embodiment and accompanying drawing thereof the utility model is remake description.

Referring to Fig. 1; A kind of anti-mud high strength shield machine cable; It comprises control core, core and the insulation master core, the tinned copper wire synnema becomes strand, strand is twisted into master core conductor 1 again; Outside master core conductor 1, extrude semiconductive internal shield 2, high strength second third insulating barrier 3, semiconductive insulation screen 4, shielding braid reinforced layer 5 successively, form described insulation master core; Three control line core conductor 6 outer fluoroplastic insulation layer 7 back strands that extrude are respectively processed type, form described control core; Ground wire core conductor 8 outer braiding reinforced layers 9 form described ground core; The third-class core stranding of three insulated master cores; Between three insulated master cores, carry two control cores and a ground core respectively secretly; The insulation master core with control core, core according to octuple pitch stranding after wrapped nonwoven fabrics; Form lapping layer 10, the lapping layer 10 outer first neoprene base inner sheath, 11, the first neoprene base inner sheaths, 11 outer wrapped successively first semi-conductive layer 12 and second semi-conductive layers 13 that extrude; Carry three supervision cores 14 secretly at first semi-conductive layer 12 and 13 of second semi-conductive layers, outside second semi-conductive layer 13, extrude neoprene base inner sheath 15 and anti-mud thermosetting halogen-free polyolefin restrictive coating 16 successively.

Referring to Fig. 1, described semiconductive insulation screen 4 is a base-material with ethene-vinyl acetate (EVA) copolymer.

Referring to Fig. 1, described shielding braid reinforced layer 5 outside semiconductive insulation screen 4, weaves the aramid fiber silk and tinned copper wire forms.

Claims (2)

1. anti-mud high strength shield machine cable; It comprises control core, core and the insulation master core; It is characterized in that: the tinned copper wire synnema becomes strand; Strand is twisted into master core conductor (1) again, outside master core conductor (1), extrudes semiconductive internal shield (2), high strength second third insulating barrier (3), semiconductive insulation screen (4), shielding braid reinforced layer (5) successively, forms described insulation master core; Outer fluoroplastic insulation layer (7) the back strand that extrudes respectively of three control line core conductors (6) is processed type, forms described control core; The outer braiding of ground wire core conductor (8) reinforced layer (9) forms described ground core; The third-class core stranding of three insulated master cores; Between three insulated master cores, carry two control cores and a ground core respectively secretly; The insulation master core with control core, core according to octuple pitch stranding after wrapped nonwoven fabrics; Form lapping layer (10); The outer first neoprene base inner sheath (11) that extrudes of lapping layer (10); Outer wrapped successively first semi-conductive layer (12) of the first neoprene base inner sheath (11) and second semi-conductive layer (13) are carried three secretly and are kept watch on core (14) between first semi-conductive layer (12) and second semi-conductive layer (13), outside second semi-conductive layer (13), extrude neoprene base inner sheath (15) and anti-mud thermosetting halogen-free polyolefin restrictive coating (16) successively.

2. a kind of anti-mud high strength shield machine cable according to claim 1 is characterized in that: described shielding braid reinforced layer (5) outside semiconductive insulation screen (4), weaves the aramid fiber silk and tinned copper wire forms.

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