CN208673750U - A kind of EMU resist bending cable - Google Patents

Abstract

The utility model discloses a kind of EMU resist bending cables, it successively includes cable conductor group, fire lagging, belting layer and insulating layer from inside to outside；The cable conductor group is twisted again by more stock twisted wires；The stock twisted wire is twisted by multiple groups conductor monofilament strands；Conductor monofilament strands strand direction twists contrary again with more stock twisted wires.The EMU of the utility model is twisted through stock by 6 class tinned copper conductors with resist bending cable conductor and is stranding into again, 6th class copper conductor monofilament is thin, after multifilament stock strand, conductor intensity is reinforced, more stock twisted wire opposite directions are twisted again again, the strength and toughness of conductor greatly improves, and can bear the torsion of 90 degree of left and right and 90 degree are bent 500000 times, and 10% or less breakage ratio.

Description

A kind of EMU resist bending cable

Technical field

The utility model relates to a kind of EMU resist bending cables.

Background technique

EMU is the carrier of EMU electric signal transmission with resist bending cable, is applied to speed per hour 350km electrified track Electricity for locomotive gas equips connecting line, is the electrical control, signal transmission and electric connecting element of EMU.Voltage class 600V. Although its structure is simple, mainly it is made of conductor, shielding, insulation, is one of mobile connecting line the most frequent in EMU. The skill SFE3200 of Chinese limited liability company, CSR, Qingdao Sifang Railway Co., Ltd publication establishes No. 647 " speed per hour of (2014) skill word by cable 350 kilometers of Chinese Industrial Standards (CIS) EMU wire and cables are supplied technical conditions " in 350 kilometers of Chinese Industrial Standards (CIS) multi-unit connectors of speed per hour The resistance to bend(ing) of dedicated resist bending cable can propose extremely harsh requirement, need to reach torsion 500000 times, and insulation is not damaged Wound, conductor breakage ratio are lower than 10% resistance to bend(ing) energy.Meanwhile the operation in EMU and laying environment are complicated, it is desirable that connector Cable while having higher resistance to bend(ing) energy, also need to meet low-smoke non-halogen flame-retardant, low smoke toxicity, oil resistant, it is corrosion-resistant, Other properties such as wear-resisting, ageing-resistant, excellent electrical properties.

Existing connector cable is manufactured according to Nippon Standard, and Nippon Standard is for the resistance to bend(ing) energy of connector cable It is required that being only 18000 times, it is significantly less than the requirement of Chinese Industrial Standards (CIS).

Utility model content

The purpose of this utility model is that solve the above-mentioned problems and provides one kind and have higher resistance to bend(ing) energy While, also there is low-smoke non-halogen flame-retardant, low smoke toxicity, oil resistant, corrosion-resistant, wear-resisting, ageing-resistant, excellent electrical properties dynamic Che Zuyong resist bending cable.

To achieve the goals above, the utility model is achieved through the following technical solutions: a kind of EMU bending resistance Bent cable, it successively includes cable conductor group, fire lagging, belting layer and insulating layer from inside to outside；The cable conductor Group is twisted again by more stock twisted wires；The stock twisted wire is twisted by multiple groups conductor monofilament strands；The conductor monofilament strands twist Direction twists contrary again with more stock twisted wires；The fire lagging is extruded on the outside of cable conductor group；The fire prevention isolation Layer is made of hollow bellows interior filling sponge；The bellows is with respect to the concave point and stock twisted wire below cable conductor group The multiple gap twisted between the stock twisted wire formed matches；The bellows is with respect to the salient point and conductor group shape above cable conductor group At cavity in flexible core is set；The flame-retardant expanded core of setting in the cavity formed above the bellows concave point with belting layer；Institute Belting layer is stated on the outside of fire lagging；The insulating layer is coated on the outside of belting layer.

Preferably, the salient point of the bellows and concave point are equipped with multiple groups venthole.

Preferably, the stock twisted wire is twisted through stock using the 6th class tinned copper wire or is stranding into again, twisting pitch 20-25 Times conductor filament diameter.

Preferably, the belting layer uses Kapton.

Particularly, the insulating layer uses low-smoke non-halogen flame-retardant high elongation rate cable material of polyolefin.

In summary the utility model has the following beneficial effects:

The utility model has many advantages, such as reasonable in design and easy to use；

The conductor of the utility model, insulated wire cores is twisted by 6 class tinned copper conductors through stock and is stranding into again, the 6th class copper conductor Monofilament is thin, and after multifilament stock strand, conductor intensity is reinforced, then more stock twisted wire opposite directions is twisted again, the intensity of conductor with it is tough Property greatly improve, can bear the torsion of 90 degree of left and right and 90 degree bending 500000 times, and 10% or less breakage ratio；

The deformation tangential force caused by cable conductor deformation is twisted again in order to adapt to opposite direction, is arranged in the top of cable conductor Bellows is arranged in the gap that stock twisted wire is twisted again between the stock twisted wire of formation using flexible energy, the salient point of bellows, is subtracted Few deformation tangential force acts directly on conductor body, acts in flexible core after being buffered using bellows；

Setting venthole helps temperature and air pressure inside and outside heat dissipation balancing cable cover(ing) at bellows salient point, concave point；Wave When flame-retardant expanded core temperature above line pipe is higher than 200 degree, start to foam, temperature more high-foaming speed is faster, foaming and intumescing system Number reaches 20 times, and the bubble of sending can fill up near fire location rapidly, extinguishes fire due to anoxic, to reach significantly Improve fireproofing of cable performance；

Insulating layer uses motor-car low-smoke non-halogen flame-retardant high elongation rate cable material of polyolefin, which has good electrical property Can, low-smoke non-halogen flame-retardant performance can meet the insulation performance requirement of 600V voltage class.Elastic properties of materials is good simultaneously, extension at break Rate is high, can reach 350%, is the preferable locomotive cable material of current elasticity, can meet Chinese Industrial Standards (CIS) multi-unit connector electricity consumption Cable reverses the resist bending performance requirement that 500000 minor insulation are not damaged.

Detailed description of the invention

Fig. 1 is the utility model cable cross-section structural schematic diagram；Fig. 2 is the utility model construction of cable schematic diagram.

Specific embodiment

The utility model is described in further detail for embodiment in reference to the accompanying drawing, but does not constitute to this reality With novel any restrictions.

Please refer to Fig. 1, shown in 2, a kind of EMU resist bending cable, it successively include from inside to outside cable conductor group 1, Fire lagging 2, belting layer 3 and insulating layer 4；Cable conductor group 1 is twisted again by more stock twisted wires；Stock twisted wire is by more Group conductor monofilament strands are twisted into (stock twisted wire is twisted through stock using the 6th class tinned copper wire or is stranding into again, and twisting pitch is 20-25 times Conductor filament diameter) conductor monofilament strands twist direction twisted again with more stock twisted wires it is contrary；The conductor of insulated wire cores is tin plating by 6 classes Copper conductor is twisted through stock and is stranding into again, and the 6th class copper conductor monofilament is thin, and after multifilament stock strand, conductor intensity is reinforced, then will More stock twisted wire opposite directions twist again, and the strength and toughness of conductor greatly improves, and can bear the torsion of 90 degree of left and right and 90 degree of bendings 500000 times, and 10% or less breakage ratio；

Opposite direction twists again to be easy to apply equidirectional tangential force to cable body, is twisted again in order to adapt to opposite direction and is led to cable Deformation tangential force caused by the bodily form becomes and raising fireproofing of cable performance, are provided with fire lagging 2, fire lagging 2 extrudes In 1 outside of cable conductor group；Fire lagging 2 is made of filling sponge 2-2 inside hollow bellows 2-1；Bellows 2-1 The concave point and stock twisted wire of opposite 1 lower section of cable conductor group twist the gap between the stock twisted wire of formation again and match that (salient point setting exists Stock twisted wire is twisted again in the gap between the stock twisted wire of formation, is reduced deformation tangential force and is acted directly on conductor body, utilizes wave It is acted in flexible core after line pipe buffering)；Salient point of the bellows 2-1 with respect to 1 top of cable conductor group and the formation of cable conductor group 1 Cavity in be arranged flexible core 2-3；The flame-retardant expanded core 2- of setting in the cavity formed above bellows 2-1 concave point with belting layer 3 4；When flame-retardant expanded core temperature above bellows is higher than 200 degree, start to foam, temperature more high-foaming speed is faster, foams swollen Swollen coefficient reaches 20 times, and the bubble of sending can fill up near fire location rapidly, extinguishes fire due to anoxic, to reach Greatly improve fireproofing of cable performance；

For belting layer on the outside of fire lagging, belting layer uses Kapton.

Insulating layer is coated on the outside of belting layer, and insulating layer uses low-smoke non-halogen flame-retardant high elongation rate cable material of polyolefin, should Material has good electrical property, and low-smoke non-halogen flame-retardant performance can meet the insulation performance requirement of 600V voltage class.Material simultaneously Elasticity is good for material, and elongation at break is high, can reach 350%, is the preferable locomotive cable material of current elasticity, can meet in national standard Quasi- multi-unit connector reverses the resist bending performance requirement that 500000 minor insulation are not damaged with cable；

The salient point and concave point of bellows 2-1 is equipped with multiple groups venthole 2-5, and ventilation is arranged at bellows salient point, concave point Hole helps the temperature and air pressure inside and outside heat dissipation balancing cable cover(ing).

Embodiment provided above is the better embodiment of the utility model, only is used to facilitate to illustrate the utility model, and It is non-to impose any limitation on the present invention, any those of ordinary skill in the art, if not departing from In the range of the mentioned technical characteristic of the utility model, locally changes or repair using made by the utility model disclosed technology content The equivalent embodiment of decorations, and without departing from the technical characteristics of the utility model content, still fall within the utility model technical characteristic In the range of.

Claims (5)

1. a kind of EMU resist bending cable, it is characterised in that: it successively includes cable conductor group, fire prevention isolation from inside to outside Layer, belting layer and insulating layer；The cable conductor group is twisted again by more stock twisted wires；The stock twisted wire is led by multiple groups Body monofilament strands twist；Conductor monofilament strands strand direction twists contrary again with more stock twisted wires；The fire lagging squeezes Packet is on the outside of cable conductor group；The fire lagging is made of hollow bellows interior filling sponge；The bellows The gap that concave point and stock twisted wire below opposite cable conductor group are twisted again between the stock twisted wire of formation matches；The bellows phase Flexible core is set in the cavity formed to the salient point above cable conductor group with conductor group；The bellows concave point top and band The flame-retardant expanded core of setting in the cavity that layer is formed；The belting layer is on the outside of fire lagging；The insulating layer is coated on On the outside of belting layer.

2. a kind of EMU resist bending cable according to claim 1, it is characterised in that: the salient point of the bellows with Concave point is equipped with multiple groups venthole.

3. a kind of EMU resist bending cable according to claim 1, it is characterised in that: the stock twisted wire is using the Six class tinned copper wires are twisted through stock or are stranding into again, and twisting pitch is 20-25 times of conductor filament diameter.

4. a kind of EMU resist bending cable according to claim 1, it is characterised in that: the belting layer uses polyamides Imines film.

5. a kind of EMU resist bending cable according to claim 1, it is characterised in that: the insulating layer uses low cigarette Halogen-free flameproof high elongation rate cable material of polyolefin.