CN209487181U - A kind of dedicated flexible cable of shield machine - Google Patents

Abstract

The utility model discloses a kind of dedicated flexible cable of shield machine, including cable core, the thin non-woven fabric being looped around outside cable core, around the enhancement layer of thin non-woven fabric setting, and around the oversheath of enhancement layer setting；The cable core includes centrally disposed saddle-shape positioning bedding core, three power wire cores being close to the arcwall face of saddle-shape positioning bedding core respectively and being circumferentially uniformly arranged, three wire cores that three power wire cores are formed by three outer gaps are separately positioned on, the thin non-woven fabric is around three power wire cores and three wire core settings.The utility model is reversed with excellent tension, counter-bending, anti-extrusion, wear-resisting, anti-movement and bending repeatedly winds performance, long service life.

Description

A kind of dedicated flexible cable of shield machine

Technical field

The utility model relates to electrical equipments, and in particular to a kind of dedicated flexible cable of shield machine.

Background technique

Shield driving heavy equipment Special electric in the Tunnel Engineering such as opencut and subway, railway, highway, municipal administration, water power Cable, because its working environment is special, environment is changeable, severe, it is desirable that cable has high abrasion, counter-bending, anti-extrusion, tear-proof, curved The feature that bilge radius is small, anti-mobile torsion, oil resistant, softness, tension, anti-tear, low temperature resistant and outer diameter are small etc..At present both at home and abroad without state Family's standard and professional standard, frequently with imported product.

Since cable bears the effect of many kinds of force such as bending, torsion, extruding, impact in use, insulation is easily caused Core breaks core, deformation, damage to cause cable not to be available.Therefore, it needs a kind of bending adapted in use process, turn round Turn, squeeze, impact etc. many kinds of force cable.

Utility model content

In view of the deficiencies of the prior art, the utility model provides a kind of dedicated flexible cable of shield machine, resists with excellent It draws, is counter-bending, anti-extrusion, wear-resisting, anti-movement is reversed and bending repeatedly winds performance, long service life.

To achieve the above object, the technical solution adopted in the utility model is as follows:

A kind of dedicated flexible cable of shield machine, including cable core, the thin non-woven fabric being looped around outside cable core, around thin The enhancement layer of type non-woven fabrics setting, and the oversheath around enhancement layer setting；The cable core includes centrally disposed Saddle-shape positions bedding core, three power wire cores being close to the arcwall face of saddle-shape positioning bedding core respectively and being circumferentially uniformly arranged, Three wire cores that three power wire cores are formed by three outer gaps are separately positioned on, the thin non-woven fabric is around three Power wire core and three wire core settings.

Further, any one in three power wire cores and other two tangent, three wire cores point It is not tangent with two close power wire cores.

Further, aramid fiber of the enhancement layer by density by 40~50%, angle of weave by 55~58 ° is made.

Further, the oversheath high pressure extrudes in enhancement layer outer rim and passes through enhancement layer filling Man Sangen power line Core and three gaps between wire core and enhancement layer.

Further, the saddle-shape positioning bedding core is made of aramid fiber and high resiliency neoprene rubber.

Further, interleaving agent is provided between three power wire cores and three wire cores.

Further, the power wire core includes power core conductor and successively wraps up power core conductor from inside to outside Internal shield, insulating layer, external shielding layer, metal screen layer, nylon semi-conductive layer；The metal screen layer is fine by 12 ingot aramid fibers The braiding of 12 ingot tinned copper wire of peacekeeping forms and angle of weave is 42~48 °, metal knitted density is 60~65%, the nylon Semi-conductive layer is nylon semi-conductive tape and is overlapped wrapped metal screen layer, wrapped Duplication not with the direction of tinned copper wire braiding Less than 40%.

Further, the wire core includes the semi-conductive lay of ground wire core of ground wire core conductor and package ground wire core conductor.

Compared with prior art, the utility model has the following beneficial effects:

(1) power wire core is arranged nylon semi-conductive layer, the design of nylon semi-conductive layer, increases between core, core and outer Slipping property between sheath；

(2) saddle-shape positioning bedding core be used as location structure so that finished cable bending moving process in, reduce core and Opposite sliding between core, increases the stability of core, improves cable bending resistance；

(3) cable core of cable positions three power wire cores and three of bedding core and circumference uniform distribution using centrally located saddle-shape Root wire core, whole is in the symmetrical structure of 1+3+3, improves construction of cable stability, also makes cable in bending, movement, winding Each core stress equalization in the process；

(4) the utility model eliminates the common sheath of traditional cable for shield machine, but directly in cable core peripheral hardware The aramid fiber braiding enhancement layer for setting one layer of thin non-woven fabric and one layer of open-weave, then uses high pressure oversheath extrusion process, So that oversheath rubber is passed through the aramid fiber braiding enhancement layer of open-weave and break through thin non-woven fabric, into the outer rim gap of core Place forms dense packing effect, so that fill part, aramid fiber enhancement layer and oversheath is become an entirety, because eliminating sheath cable Outer diameter is smaller, and bendability and flexibility are more preferable；Fill part, aramid fiber enhancement layer and external sheath layer are an entirety, are greatly increased Buckle resistance energy, torsional resistance and the shock resistance of cable, greatly improve the service life of cable；

Interleaving agent is set between (5) three power wire cores and three wire cores, increases the sliding between core and oversheath Property, it is ensured that core can be free to slide when cable bend, substantially increases the resistance to bend(ing) energy and softness of cable；

(6) enhancement layer outside core using aramid fiber weave, count about 40~45%, angle of weave be 55~ 58 °, biggish braid angle can not only increase cable stretching resistance, but also can ensure that minimum bending radius in the use process of cable Reach 6 times of outside diameters of cable；

Detailed description of the invention

Fig. 1 is the cross-sectional view of the embodiments of the present invention.

Fig. 2 is that the saddle-shape of the embodiments of the present invention positions the cross-sectional view of bedding core.

Wherein, the corresponding title of appended drawing reference are as follows:

1- ground wire core conductor, 2- power core conductor, 3- internal shield, 4- external shielding layer, 5- insulating layer, 6- oversheath, 7- semi-conductive lay of ground wire core, 8- saddle-shape position bedding core, 9- metal screen layer, 10- nylon semi-conductive layer, 11- enhancement layer, 12- Thin non-woven fabric, 13- glass fiber core, 14- high resiliency neoprene layer.

Specific embodiment

It is practical to this with reference to the accompanying drawings and examples to keep the purposes, technical schemes and advantages of the application apparent Novel to be described further, the embodiments of the present invention includes but is not limited to the following example.

Embodiment

As shown in Figure 1 to Figure 2, a kind of dedicated flexible cable of shield machine is present embodiments provided, it should be noted that this implementation The serial numbers terms such as " first ", " second ", " third " in example are only used for distinguishing same item, cannot be understood as to protection scope Specific restriction.In addition, the positional terms such as " bottom ", " top ", " side edge " in the present embodiment are illustrated based on the drawings.

The dedicated flexible cable of the shield machine, including cable core, the thin non-woven fabric 12 being looped around outside cable core, around thin The enhancement layer 11 that type non-woven fabrics 12 is arranged, and the oversheath 6 being arranged around enhancement layer 11；Wherein, cable core includes setting Saddle-shape at center positions bedding core 8, is close to three concave curved surfaces of saddle-shape positioning bedding core 8 respectively and is circumferentially evenly distributed with Three power wire cores being arranged are separately positioned on three wire cores that three power wire cores are formed by three outer gaps, thin Type non-woven fabrics 12 is around three power wire cores and three wire core settings.Wherein, any one in three power wire cores and another Outer two tangent, and three wire cores are tangent with two close power wire cores respectively.Power wire core includes 2 He of power core conductor Internal shield 3, insulating layer 5, external shielding layer 4, metal screen layer 9, the nylon half of power core conductor 2 are successively wrapped up from inside to outside Conductive layer 10；Wire core includes the semi-conductive lay of ground wire core 7 of ground wire core conductor 1 and package ground wire core conductor 1.

Specifically, internal shield 3 is extruded using volume resistivity≤30 Ω m semiconducting rubber；Insulating layer 5 Using volume resistivity >=1 × 10¹⁴The third insulation rubber of second is pressed to be extruded into Ω m；External shielding layer 4 uses volume resistivity≤50 The strippable semi-conductive rubber of Ω m extrudes；Metal screen layer 9 by 12 ingot aramid fibers and 12 ingot tinned copper wires braiding and At and angle of weave is 42~48 °, metal knitted density is 60~65%；Nylon semi-conductive layer 10 be nylon semi-conductive tape and Wrapped metal screen layer 9 is overlapped with the direction of tinned copper wire braiding, wrapped Duplication is not less than 40%.Semi-conductive lay of ground wire core 7 Partly to lead rubber.Power core conductor 2 and ground wire core conductor 1 are constituted by the 6th kind of tin plating soft copper silk is twisted.

Aramid fiber of the enhancement layer 11 by density by 40~50%, angle of weave by 55~58 ° is made, and further increases outer The mechanical strength of sheath 6.Oversheath 6 is made of high-intensitive, high abrasion neoprene rubber, and neoprene rubber tensile strength is high, flexibility Well, wear-resisting property is excellent, is conducive to cable and pulls use for a long time, 6 high pressure of oversheath extrudes in 11 outer rim of enhancement layer and passes through reinforcement Layer 11 fills the gap between Man Sangen power wire core and three wire cores and enhancement layer 11.Saddle-shape positions bedding core 8 by aramid fiber Fiber and high resiliency neoprene rubber are constituted, specially the aramid fiber core 13 and high resiliency neoprene rubber layer 14 at middle part, saddle-shape It positions bedding core 8 and is used as location structure, so that finished cable in bending moving process, reduces sliding between core and core relatively It is dynamic, increase the stability of core, improves cable bending resistance.Be provided between three power wire cores and three wire cores every From agent.

The manufacturing method of the dedicated flexible cable of the shield machine of the present embodiment, includes the following steps:

Step a: by annealed copper line with the pitch bundle strand of 12 times of strand outer diameters at strand, then with 10 times of conductor diameter Conductor diameter pitch is twisted into power core conductor and ground wire core conductor again；

Step b: internal shield, insulating layer and external shielding layer are set gradually outside power core conductor, outside external shielding layer Metal screen layer and nylon semi-conductive layer are set gradually, leads nylon tape, structure further around one layer of semiconductive of packet outside nylon semi-conductive layer At power wire core；

Step c: extruding one layer of semi-conductive layer outside ground wire core conductor, constitutes wire core；

Step d: 3 power wire cores and 3 wire cores are twisted together with the pitch of 9 times of conductor assembly outer diameters, be twisted when Center places saddle-shape and positions bedding core, and 3 wire cores She Zhi not be formed by three outer gaps in three power wire cores, Wrapped one layer of thin non-woven fabric outside three power wire cores and three wire cores constitutes cable core；

Step e: in cable core outer ring around the enhancement layer for being arranged one layer；

Step f: extruding one layer of oversheath outside enhancement layer, finally prepares the dedicated flexible cable of shield machine.

Above-described embodiment is only one of preferred embodiments of the present invention, should not be taken to limit the utility model Protection scope, as long as the utility model body design thought and mentally make have no the change of essential meaning or profit Color, it is solved the technical issues of it is still consistent with the utility model, the protection scope of the utility model should all be included in Within.

Claims (8)

1. a kind of dedicated flexible cable of shield machine, which is characterized in that including cable core, the slim nonwoven that is looped around outside cable core Cloth, around the enhancement layer of thin non-woven fabric setting, and around the oversheath of enhancement layer setting；The cable core includes setting Saddle-shape at center positions bedding core, three for being close to the arcwall face of saddle-shape positioning bedding core respectively and being circumferentially uniformly arranged Power wire core is separately positioned on three wire cores that three power wire cores are formed by three outer gaps, the slim nonwoven Cloth is around three power wire cores and three wire core settings.

2. the dedicated flexible cable of a kind of shield machine according to claim 1, it is characterised in that: in three power wire cores Any one tangent with other two, and three wire cores are tangent with two close power wire cores respectively.

3. the dedicated flexible cable of a kind of shield machine according to claim 1, it is characterised in that: the enhancement layer is that density is 40 ~50%, angle of weave is made of 55~58 ° of aramid fiber.

4. the dedicated flexible cable of a kind of shield machine according to claim 1, it is characterised in that: the oversheath high pressure extrudes Enhancement layer outer rim and Man Sangen power wire core and three gaps wire core and enhancement layer are filled across enhancement layer.

5. the dedicated flexible cable of a kind of shield machine according to claim 1, it is characterised in that: saddle-shape positioning bedding core by Aramid fiber and high resiliency neoprene rubber are constituted.

6. the dedicated flexible cable of a kind of shield machine according to claim 1, it is characterised in that: three power wire cores and three Interleaving agent is provided between root wire core.

7. described in any item dedicated flexible cables of a kind of shield machine according to claim 1~6, it is characterised in that: the power line Core includes power core conductor and successively wraps up internal shield, insulating layer, external shielding layer, the gold of power core conductor from inside to outside Belong to shielded layer, nylon semi-conductive layer；The metal screen layer is formed and is compiled by 12 ingot aramid fibers and the braiding of 12 ingot tinned copper wires Knit that angle is 42~48 °, metal knitted density is 60~65%, the nylon semi-conductive layer is nylon semi-conductive tape and with plating The direction of tin proof copper-wire braided is overlapped wrapped metal screen layer, wrapped Duplication is not less than 40%.

8. the dedicated flexible cable of a kind of shield machine according to claim 7, it is characterised in that: the wire core includes wire core The semi-conductive lay of ground wire core of conductor and package ground wire core conductor.