CN2726073Y - Data transmission cable of point type transponder - Google Patents
Data transmission cable of point type transponder Download PDFInfo
- Publication number
- CN2726073Y CN2726073Y CN 200420079897 CN200420079897U CN2726073Y CN 2726073 Y CN2726073 Y CN 2726073Y CN 200420079897 CN200420079897 CN 200420079897 CN 200420079897 U CN200420079897 U CN 200420079897U CN 2726073 Y CN2726073 Y CN 2726073Y
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- data transmission
- cable
- dot
- transmission cable
- transponder data
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Abstract
The utility model discloses a data transmission cable of point type response for railway train numbers identification system. The cable comprises an outer jacket and a cable core. The cable core comprises one pair of wire groups or one star-shaped four-wire group; the diameter of an insulated single wire conductor is at least 1. 31 mm, and the best selection is between 1. 31 mm-2. 0 mm. The cable adopts double shielding layers, and metal drain wires are laid in the outer shielding layer. The cable has the characteristics of low direct current resistance and capacitance value and accurate and reliable signal transmission, and is widely used in data transmission of point type transponder for electrified railway.
Description
Technical field
The utility model relates to a kind of rds data transmission of Information medium, particularly is used for the answering machine data transmission cable between other point type data processor and station point type data processor.
Background technology
Along with the develop rapidly of electric railway, again and again speed raising of railway locomotive, gather and transmit accurately, reliably automatically, in time running number, in real time data messages such as the speed of a motor vehicle for locomotive safe, at a high speed, planned operation seems particularly important.Therefore, the dot-mode transponder running number of point type data processor, station point type data processor and data cable is confirmed the continuous reliability service of system by must guaranteeing to comprise, not only to guarantee between the other point type data processor in station point type data processor and road subsequenct call, in time reply, more to guarantee data message such as running number in real time, accurately, transmit reliably.
Yet, use the data cable between the other point type data processor of point type data processor and road AT STATION at present, still using " railway signal cable " that satisfy railroad industry standard TB/T2476-1993, this cable conductor is that the polyethylene insulation twisted pair wire group of 1.0mm or star quad constitute by conductor diameter, the structures shape of this railway signal cable its performance index be difficult to more economical, satisfy running number more reliably and confirm system's new demand that transmission is proposed to specific data information.Although above-mentioned signal cable has reached purpose to a certain extent, its technique effect awaits improving, and especially requires real-time, accuracy and the reliability of data information transfer.
The height of the data transmission credibility of answering machine data transmission cable outside the Pass having with circuit transmission attenuation constant and D.C. resistance, also should reduce the cross-talk of message transmission, improve antijamming capability, and the optimization of these indexs can realize all by architecture advances.Though rds data transmission cable kind is more, performance is different, and set up industry standard, but answering machine data transmission cable is compared with common rds data cable, has different characteristics and designing requirement, and still is not applied to the private cable of railway point transponder data transmission at present.
Summary of the invention
At above-mentioned the deficiencies in the prior art, the purpose of this utility model is to provide a kind of dot-mode transponder data transmission cable of special use, its existing rds data signal cable has lower resistance value and capacitance, thereby further reduced circuit transmission attenuation constant, realized the reliability of data.
The further purpose of the utility model is this dot-mode transponder data transmission cable, has better shielding properties, thereby effectively improves the interference free performance of cable.
In order to achieve the above object, the utility model provides a kind of dot-mode transponder data transmission cable, and it comprises cable core and outer jacket, and described cable core comprises an a pair of line group or a star quad, and this forms by insulated single wire is stranded line group or star quad; Insulated single wire is that conductor is coated with insulating barrier, and the diameter of described conductor is at least 1.31mm.
Dot-mode transponder data transmission cable of the present utility model, the conductor diameter of its insulated conductor is preferably between the 1.31mm-2.0mm.
Dot-mode transponder data transmission cable of the present utility model, its protective coverings of cable includes two-layer screen.
Dot-mode transponder data transmission cable of the present utility model also is provided with the metal drain wire in the described protective coverings of cable.
After adopting said structure, owing in described cable core, only adopted an a pair of line group or a star quad, thus satisfied the operating characteristic and the designing requirement of answering machine data transmission cable economically.More because the conductor diameter of insulated single wire greater than 1.3mm, has not only been broken through the thinking limitation of formed for a long time railway digital signal cable conductor diameter 1.0mm; And because the increase of conductor diameter, one side has reduced the dc resistance of cable effectively; On the other hand, the increase of conductor diameter, increased the overall dimension of insulated single wire again, make the centre distance between each insulated single wire become big, electric capacity between cable loop also decreases, make the cable transmission attenuation constant reduce so again, thereby further improved the promptness and the reliability of transponder data transmission.Also, more effectively improved the interference free performance of cable, made the transmission of data message become accurate more, reliable because outer jacket has adopted two-layer screen.
Description of drawings
Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.
Fig. 1 is of the present utility model to line group cable core dot-mode transponder data transmission cable cross sectional representation.
Fig. 2 is a star quad cable core dot-mode transponder data transmission cable cross sectional representation of the present utility model.
Among the figure, the 1-conductor; The 2-insulating barrier; The 3-gasket for packing; The 4-aluminium-plastic tape; The 5-pe sheath; The 6-aluminium sheath; The 7-anticorrosive coat; The 8-steel-tape armouring; The 9-oversheath; The 10-drain wire.
Embodiment
Shown in Figure 1 is the cross sectional representation of a kind of specific embodiment of the utility model, and this dot-mode transponder data transmission cable has comprised outer jacket and cable core, and wherein cable core comprises a pair of line group and two gasket for packings 3.
Outer jacket outwards is followed successively by aluminium-plastic tape 4, pe sheath 5, aluminium sheath 6, anticorrosive coat 7, steel-tape armouring 8, oversheath 9 compositions from the lining.Aluminium-plastic tape 4 forms for the thick overlapping vertical bag of embossing aluminium-plastic tape of 0.2mm, and the one side of its metallic aluminium inwardly; The nominal thickness of aluminium sheath 6 is 1.3mm, and anticorrosive coat 7 is to apply the thick PUR of one deck 0.3mm as anticorrosive coat outside aluminium sheath 6.But outer jacket is not limited to said structure, and those of ordinary skill in the art can adopt universal method to design described outer jacket, thereby satisfy the needs of different use occasions according to the actual use occasion of cable.As make cable have cold-resistant, fire-retardant, waterproof damp proof insulation, protection against rodents, termite-proof etc.The structure of the protective coverings of cable of these types and manufacture craft are all comparatively ripe, repeat no more herein.
The cable core of cable is by a pair of line group and two gasket for packing 3 stranded forming.Gasket for packing 3 adopts the polyethylene rope of true qualities, this gasket for packing 3 not only makes the profile of cable keep the rounding unanimity, and make and two of line group is thoroughly done away with the edge single lines keep stable position and desirable centre distance, gasket for packing 3 also helps improving the tensile strength of cable simultaneously.The line group is comprised that two thoroughly do away with the edge single line, and this insulated single wire is to be coated with insulating barrier 2 at conductor 1, and insulating barrier 2 adopts vinyon and makes white, two kinds of colors of tangerine respectively.The diameter of conductor 1 is 1.53mm, the big quantum jump of diameter of this conductor 1 " railway signal cable " conductor diameter of generally using now limitation as 1.0mm, the dc resistance that this breakthrough not only makes every conductor of cable drops to that 9.9 Ω/below the km, conductor DC resistance descends exponentially from about 23.5 Ω/km; Increasing, the corresponding of insulating barrier of conductor diameter thicken simultaneously, the conductor distance between centers is increased, cable mutual capacitance is again to descend, effectively reduce the cable transmission attenuation constant, increase substantially the electrical performance indexes of cable, strengthened the accuracy and the reliability of dot-mode transponder transfer of data.Certainly conductor diameter herein is not limited to 1.53mm, but should be 1.31mm at least, preferably is chosen between the 1.31-2.0mm, so that cable obtains comparatively perfect performance price ratio; Same gasket for packing also is not limited to polyethylene rope, also can be plant, animal origin rope or other synthetic fiber rope etc.
Have two-layer screen in the outer jacket of cable, this two screen is respectively aluminium-plastic tape 4 and aluminium sheath 6, adopt double-layer shielding structure to improve shield effectiveness greatly, more existing " railway signal cable " has different structures and stronger antijamming capability, make it further to satisfy the transponder data cable accurately, in time and the specific (special) requirements of high reliability.Shielding layer structure in this structure and material, can adopt other common structure equally, can be copper strips (pipe), common steel band (pipe), aluminium strip (pipe), also can be high magnetic conduction steel band, compound copper-plastics band, aluminium-plastic tape, can also be braid over braid of constituting such as steel wire, copper wire, magnetic conduction steel wire or the like.
Be adjacent to mutually in outer jacket, with the aluminium face of aluminium-plastic tape 4 and be laid with metal drain wire 10 contiguously, this drain wire 10 is two soft circular copper wires, also can be two tinned wirds.But its radical is not limited to two, can also be one or other radical, and these should require to determine according to specific design.The setting of drain wire 10, the internal shield of both having guaranteed whole cable has identical current potential, can further improve the shield effectiveness of cable so that the electric charge on the screen metal surface is delivered in the earth by earthing method smoothly to be gone again, guarantee the transponder data reliable information transmission.
Shown in Figure 2 is the cross sectional representation of another kind of embodiment of the present utility model, and this dot-mode transponder data transmission cable still comprises outer jacket and cable core.Among this embodiment, except that cable conductor was different with structure shown in Figure 1, other structure was identical.
During this was implemented, the cable core of cable was made of a star quad, and the star quad is thoroughly done away with stranded the forming of edge single line by four, and conductor 1 diameter of insulated single wire still is 1.53mm, and insulating barrier 2 is made by polyethylene equally; That four insulating barriers that thoroughly do away with the edge single lines are respectively is white, blue, tangerine, green four kinds of colors.Need to prove that simultaneously colour code also is not limited to above-mentioned color, only need be to adopt different general colors, so that distinguished.
Above-mentioned only is two kinds of preferential embodiments of the present utility model; those of ordinary skill in the art is on the basis of the utility model principle; can also make some conversion and improvement, but these technical solutions that are equal to mutually fall into all in the protection range that the utility model claims are limited.
Claims (10)
1, a kind of dot-mode transponder data transmission cable comprises cable core and outer jacket, it is characterized in that: described cable core comprises an a pair of line group or a star quad, and this forms by insulated single wire is stranded line group or star quad; Insulated single wire is that conductor (1) is coated with insulating barrier (2), and the diameter of described conductor (1) is at least 1.31mm.
2, dot-mode transponder data transmission cable according to claim 1 is characterized in that: the diameter of described conductor (1) is between the 1.31mm-2.0mm.
3, dot-mode transponder data transmission cable according to claim 2 is characterized in that: described conductor diameter is 1.53mm.
4, dot-mode transponder data transmission cable according to claim 1 is characterized in that: described outer jacket includes two-layer screen.
5, dot-mode transponder data transmission cable according to claim 4 is characterized in that: described two-layer screen is respectively aluminium-plastic tape (4) and aluminium sheath (6).
6, dot-mode transponder data transmission cable according to claim 1 is characterized in that: described line group cable core is also comprised two gasket for packings (3).
7, dot-mode transponder data transmission cable according to claim 6 is characterized in that: described gasket for packing (3) is a polyethylene rope.
8, dot-mode transponder data transmission cable according to claim 1 is characterized in that: also be provided with metal drain wire (10) in the described outer jacket.
9, dot-mode transponder data transmission cable according to claim 8 is characterized in that: described metal drain wire (10) is two parallel soft circular copper wire or tinned wirds.
10, according to each described dot-mode transponder data transmission cable among the claim 1-9, it is characterized in that: the outer insulating barrier (2) of described each conductor (1) is distinguished with the polyolefin of different colour codes respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420079897 CN2726073Y (en) | 2004-09-26 | 2004-09-26 | Data transmission cable of point type transponder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420079897 CN2726073Y (en) | 2004-09-26 | 2004-09-26 | Data transmission cable of point type transponder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2726073Y true CN2726073Y (en) | 2005-09-14 |
Family
ID=35040785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420079897 Expired - Lifetime CN2726073Y (en) | 2004-09-26 | 2004-09-26 | Data transmission cable of point type transponder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2726073Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102354559A (en) * | 2011-09-19 | 2012-02-15 | 中利科技集团股份有限公司 | Dot transponder data transmission cable with improved structure |
-
2004
- 2004-09-26 CN CN 200420079897 patent/CN2726073Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102354559A (en) * | 2011-09-19 | 2012-02-15 | 中利科技集团股份有限公司 | Dot transponder data transmission cable with improved structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20140926 Granted publication date: 20050914 |