CN203910294U - Wtb data transmission cable - Google Patents

Abstract

The utility model discloses a WTB data transmission cable and belongs to the cable field. The WTB data transmission cable comprises two line cores, fillers, a packaging material layer, a shielding layer and a sheath; each line core is composed of a conductor and an insulation layer, wherein the insulation layer uniformly seals the conductor; two sides of the line cores are provided with the fillers; the line cores and the fillers are stranded together so as to form a round structure; the packaging materials layer wraps the exteriors of the line cores and the fillers; the shielding layer wraps the exterior of the packaging material layer; and the sheath wraps the exterior of the shielding layer. The rated voltage of the cable of the utility model is 300V. The WTB data transmission cable has the advantages of low temperature resistance, high temperature resistance, small outer diameter, light weight, excellent electrical properties as well as excellent mechanical and physical properties, and the like.

Description

WTB data cable

Technical field

The utility model relates to field of cables, specifically, relates to a kind of WTB data cable.

Background technology

WTB (Wire Train Bus): wired train bus, WTB bus is mainly used in the communication of train level, its transmission rate is 1Mbps, can implementation procedure data and the transmission of message data, its maximum feature has the first operation function of train exactly, and (train just operation function is exactly after the configuration of rail vehicle changes, can automatically address vehicle, form new train topological structure, and do not need artificial participation).The special change of WTB bus is applicable to need the dynamically rail vehicle of marshalling.

WTB is transmitting procedure data periodically, and its transmission cycle is the integral multiple of basic cycle (25ms), and the maximum length of transmission data is 128 bytes.Process data is taked broadcast mode, and in bus, node can receive the process data of other nodes.For the transmission of aperiodicity data, can adopt message data mode, its transmission speed is slower.Message data needs the support of the corresponding stack of view in real time, for realizing network layer and above each layer protocol.

As general fieldbus, WTB belongs to bus arbitration type network, and his link layer uses HDLC High-Level Data Link Control, and exchange data using message load mode, is for train net, and is applicable to often separate the train of hanging and hanging together.

The progressive let us of society improves constantly the requirement of security protection.Requiring that cable data cable transmission speed is faster, transmission bandwidth wider in, fire-resistant communication cable continued power ability in fire is also had to more and more higher requirement, and the insulated fireproof performance of fire-resistant communication cable is to continued power ability important in its fire.The insulating material that prior art is used cannot ensure that WTB cable can also keep basic transformation parameter in fire He after fire.

Utility model content

The technical problem that 1, will solve

The purpose of this utility model is to provide a kind of WTB data cable that still can keep basic transformation parameter in fire and after fire.

2, technical scheme

For achieving the above object, the utility model adopts following technical scheme:

WTB data cable, comprises two cores, filler, the packing timber bed of material, screen and sheath; Each core is made up of conductor and insulating barrier, and insulating barrier evenly seals conductor, and the both sides of two cores are provided with filler, and core and filler twist together circular; The described packing timber bed of material is wrapped in the outside of core and filler; Described screen is wrapped in the outside of the packing timber bed of material, and described sheath is wrapped in the outside of screen.

Further, described conductor is the tin-coated copper wire of annealing flexibly.

Further, the material of described insulating barrier is foam crosslinked polyethylene, and the color of the insulating barrier of two cores is the one in white or black, plays mark action.

Further, the material of the described packing timber bed of material is plastic tape.

Further, described screen is formed by the tin-coated copper wire braiding of annealing.

Further, the material of described sheath is that model is the crosslinked polyethylene of EM104, and sheath color is black, and sheath external diameter is 8.20 ± 0.40mm.

Product parameters of the present utility model is as following table:

3, beneficial effect

(1) rated voltage for cable of the present utility model is 300V, has that low temperature resistant, high temperature resistant grade is high, external diameter is little, a distinguishing feature such as lightweight, electric property and mechanical and physical performance excellence;

(2) conductor of the present utility model has adopted flexible annealing tin-coated copper wire, has increased the pliability of cable; Adopt low-smoke halogen-free polyolefin elastomeric material, make the bending force of cable less, increase the pliability of cable, and adopt halogen-free polyolefin elastomeric material, make it have good resistance to wear;

(3) the utility model adopts halogen-free low-smoke flame retardant material, in the time that occurring, fire produces hardly toxic gas and dense smoke, be conducive to the smooth expansion of fire-fighting work, personnel shift, control spreading of fire, more can alleviate the secondary disaster that hydrogen halide causes the precision instrument and equipments such as the instrument and meter in surrounding environment etc.;

(4) the utility model adopts sheath and insulating barrier all adopt cross-linking polyethylene materials, double-deck high temperature resistant, fail safe strengthens, make the fire resistance that cable is higher, there is more than 50200 transmission characteristic of standard EN, can in fire and after fire, keep substantially constant basic transformation parameter.

Brief description of the drawings

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

In figure: 1, conductor, 2, insulating barrier, 3, filler, 4, the packing timber bed of material, 5, screen, 6, sheath.

Embodiment

Below in conjunction with drawings and Examples, the utility model is described in more detail.

Embodiment

As shown in Figure 1, WTB data cable, comprises two cores, filler 3, the packing timber bed of material 4, screen 5 and sheath 6; Each core is made up of conductor 1 and insulating barrier 2, and the insulating barrier 2 evenly both sides of 1, two core of sealing conductor is provided with filler 3, and core and filler 3 twist together circular; The described packing timber bed of material 4 is wrapped in the outside of core and filler 3; Described screen 5 is wrapped in the outside of the packing timber bed of material 4, and described sheath 6 is wrapped in the outside of screen 5.

Described conductor is the tin-coated copper wire of annealing flexibly.

The material of described insulating barrier is foam crosslinked polyethylene, and the color of the insulating barrier of two cores is the one in white or black, plays mark action.

The material of the described packing timber bed of material is plastic tape.

Described screen is formed by the tin-coated copper wire braiding of annealing.

The material of described sheath is that model is the crosslinked polyethylene of EM104, and sheath color is black, and sheath external diameter is 8.20 ± 0.40mm.

Claims (6)

1.WTB data cable, is characterized in that: comprise two cores, filler, the packing timber bed of material, screen and sheath; Each core is made up of conductor and insulating barrier, and insulating barrier evenly seals conductor, and the both sides of two cores are provided with filler, and core and filler twist together circular; The described packing timber bed of material is wrapped in the outside of core and filler; Described screen is wrapped in the outside of the packing timber bed of material, and described sheath is wrapped in the outside of screen.

2. WTB data cable as claimed in claim 1, is characterized in that: described conductor is the tin-coated copper wire of annealing flexibly.

3. WTB data cable as claimed in claim 1, is characterized in that: the material of described insulating barrier is foam crosslinked polyethylene, and the color of the insulating barrier of two cores is the one in white or black, plays mark action.

4. WTB data cable as claimed in claim 1, is characterized in that: the material of the described packing timber bed of material is plastic tape.

5. WTB data cable as claimed in claim 1, is characterized in that: described screen is formed by the tin-coated copper wire braiding of annealing.

6. WTB data cable as claimed in claim 1, is characterized in that: the material of described sheath is that model is the crosslinked polyethylene of EM104, and sheath color is black, and sheath external diameter is 8.20 ± 0.40mm.