CN201178001Y

CN201178001Y - Cable for passenger transportation answering machine data transmission

Info

Publication number: CN201178001Y
Application number: CNU2008200205942U
Authority: CN
Inventors: 贾长武; 韩绍松; 任凤森; 孙焕胜; 殷明顺
Original assignee: JINAN RUITONG RAILWAY ELECTRIC SERVICE CO Ltd
Current assignee: JINAN RUITONG RAILWAY ELECTRIC SERVICE CO Ltd
Priority date: 2008-04-02
Filing date: 2008-04-02
Publication date: 2009-01-07
Anticipated expiration: 2018-04-02

Abstract

The utility model relates to a cable, particularly to a responder data transmission cable for respectively connecting an indoor cable and an outdoor cable with an active responder and a LEU signal control device in a railway passenger transport dedicated line control system. The data transmission cable comprises a cable core formed by stranding a plurality of insulated cores. A shielding layer, a woven shielding layer and a low-smoke halogen-free flame retardant polyolefin outer sheath are sequentially arranged outside the cable core from inside to outside. The data transmission cable provided in the utility model has the advantages of good bending properties, good safety and reliability, stable signal transmission performance, and good anti-jamming performance.

Description

A kind of Line for Passenger Transportation transponder data transmission cable

Technical field:

The utility model relates to a kind of cable, indoor in especially a kind of special line for passenger trains train control system, outside cable junction box respectively with LEU signal controlling equipment, active balise between be connected and use answering machine data transmission cable.

Background technology:

According to the railway Eleventh Five-Year Plan, many high speed passenger dedicated railways of railway put into operation in succession, for satisfying the railroad train demand for raising speed, adapt to railroad train safety, development need at a high speed, development to the train control system signalling technique is also had higher requirement, wherein transponder device has been listed the infrastructure device of China railways train control system in, answering machine data transmission cable two tail ends respectively with being connected of active balise and indoor LEU control appliance, there is not special use now, the transfer of data cable of easy construction, substituting cable at present exists bending property poor, be difficult to construction during house wiring, and do not have fire-retardant performance, poor stability, the signal interference free performance in signal box is poor, the shortcoming that transmission stability is bad can't satisfy the control requirement of train operation in the high speed passenger dedicated railway.

The utility model content:

The utility model provides a kind of Line for Passenger Transportation transponder data transmission to use cable, its good bending property, and safe and reliable, signal transmission performance is stable, and anti-interference is good, has solved problems of the prior art.

The utility model is to solve the problems of the technologies described above the technical scheme that is adopted to be: it comprises cable core, cable core is provided with lapped shielding layer, woven shield and low smoke halogen-free flame-retardant polyolefin oversheath by stranded the forming of some eradication edge cores from inside to outside successively in the outside of cable core.

Described lapped shielding layer adopts wrapped the making of aluminium foil of single face coating; Described woven shield adopts the braiding of tin annealed copper wire individual layer to make.

Described insulated wire cores comprises conductor, is provided with the three-layer insulated sheath of endodermis, intermediate layer and exodermis from inside to outside successively in the outside of conductor.

Between cable core of forming by two or four stranded insulated wire cores and lapped shielding layer, also dredge and be wound with the polyester layer, be surrounded with the nonmetal band of non-hygroscopic in the outside of polyester layer.

The utility model adopts double-layer shielding structure at cable core arranged outside lapped shielding layer and woven shield, has increased shielding properties, has improved the interference free performance of cable at signal box; Oversheath uses the low smoke halogen-free flame-retardant polyolefin oversheath, has guaranteed the fail safe when cable uses; Insulated wire cores adopts three-layer insulated, has improved the electric property and the mechanical and physical performance of cable; Dredge around the polyester layer in the cable core outside of being made up of two or four stranded insulated wire cores, wrapped non-moist nonmetal band can increase stability of structure and symmetry in the outside of polyester layer.

Description of drawings:

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the structural representation of the another kind of execution mode of the utility model.

Fig. 3 is the cross-sectional structure schematic diagram of insulated wire cores.

Wherein, 1, insulated wire cores; 2, lapped shielding layer; 3, woven shield; 4, oversheath; 5, conductor; 6, endodermis; 7, intermediate layer; 8, exodermis; 9, polyester layer; 10, the nonmetal band of non-hygroscopic.

Embodiment:

For clearly demonstrating the technical characterstic of this programme, below by embodiment, and in conjunction with its accompanying drawing, the utility model is elaborated.

As shown in FIG., the utility model comprises cable core, and cable core is provided with lapped shielding layer 2, woven shield 3 and low smoke halogen-free flame-retardant polyolefin oversheath 4 by some eradication edge core 1 stranded forming from inside to outside successively in the outside of cable core.Oversheath 4 adopts low-smoke halide-free fireproof composite polyolefine material, has guaranteed the fail safe when cable uses.It is wrapped the making of aluminium foil of the single face coating of 0.05mm that described lapped shielding layer 2 adopts thickness; It is that the braiding of 0.15mm tin annealed copper wire individual layer is made that described woven shield 3 adopts nominal diameter.Described insulated wire cores 1 comprises conductor 5, stranded the making of the soft circular copper wire of TR type that it is 0.2mm that conductor 5 can adopt 24 nominal diameters, and good bending property is provided with endodermis 6, intermediate layer 7 and exodermis 8 three-layer insulated layers from inside to outside successively in the outside of conductor 5.Insulated wire cores 1 adopts three-layer co-extruded technology to make, and its endodermis 6 has adopted the low density polyethylene (LDPE) LE8706 of easy machine-shaping, to conductor pre-heating, has increased the adhesion strength of insulation and copper conductor before insulating exruded, and the effect of contraction technical performance prevents to insulate; High density HE3366 has been adopted in intermediate layer 7, has strengthened the mechanical and physical performance in intermediate layer 7; Exodermis 8 has adopted high density HE3366 and has added color masterbatch, and color masterbatch only accounts for 2% of exodermis 8 materials, has reduced because color masterbatch adds the defective that too much causes insulating dielectric layer loss increasing and transmission attenuation to strengthen, and has improved the electric property of product.Also dredge in lapped shielding layer 2 inboards of forming by two or four stranded insulated wire cores 1, the cable core outside and to be wound with polyester layer 9, be surrounded with in the outside of polyester layer 9 and non-ly moistly nonmetally be with 10, to increase stability of structure and symmetry.

During use, cable described in the utility model can make transfer of data accurate, index is reliable and stable, sending allowance is little, it is poor to have overcome the existing cable bending property, house wiring does not have technical problems such as fire-retardant, can be widely used in the Line for Passenger Transportation train control system between the house cable junction box and LEU signal controlling equipment be connected and outside cable box and active balise between be connected, solved the special-purpose stube cable of former nothing and with the technical problem of normal signal line replacement, for providing convenience and reliable technique to guarantee being connected between outdoor transponder cable and the terminal device, satisfy railroad train operation control requirement.

Claims

1, a kind of Line for Passenger Transportation transponder data transmission cable, comprise cable core, cable core be is characterized in that by stranded the forming of some eradication edge cores: the outside at cable core is provided with lapped shielding layer, woven shield and low smoke halogen-free flame-retardant polyolefin oversheath from inside to outside successively.

2, cable is used in a kind of Line for Passenger Transportation transponder data transmission according to claim 1, and it is characterized in that: described lapped shielding layer adopts wrapped the making of aluminium foil of single face coating; Described woven shield adopts the braiding of tin annealed copper wire individual layer to make.

3, cable is used in a kind of Line for Passenger Transportation transponder data transmission according to claim 1 and 2, and it is characterized in that: described insulated wire cores comprises conductor, is provided with the three-layer insulated sheath of endodermis, intermediate layer and exodermis from inside to outside successively in the outside of conductor.

4, a kind of Line for Passenger Transportation transponder data transmission cable according to claim 3, it is characterized in that: between cable core of forming by two or four stranded insulated wire cores and lapped shielding layer, also dredge and be wound with the polyester layer, be surrounded with the nonmetal band of non-hygroscopic in the outside of polyester layer.