CN202307251U - Double-protective wing support railway signal cable - Google Patents
Double-protective wing support railway signal cable Download PDFInfo
- Publication number
- CN202307251U CN202307251U CN2011204399864U CN201120439986U CN202307251U CN 202307251 U CN202307251 U CN 202307251U CN 2011204399864 U CN2011204399864 U CN 2011204399864U CN 201120439986 U CN201120439986 U CN 201120439986U CN 202307251 U CN202307251 U CN 202307251U
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Abstract
The utility model discloses a double-protective wing support railway signal cable, comprising a cable core, insulating core wires and a sheath and characterized in that the cable core is formed by a plurality of transmission units which are arranged in concentric circles; each transmission unit is a support star quad formed by a plurality of insulating core wires arranged in a support and is covered by a shield metal layer; the support is a cross-shaped support provided with double-protective wings; the sheath is arranged outside the cable core and tightly covers the cable core so as to form a whole body. Compared with prior arts, the double-protective wing support railway signal cable possesses a simple structure and a more stable cable electrical performance; the mechanical strength of core wire insulating layers is obviously raised; the defects and deficiency of a present cable are overcome; the use requirements of high safety and high performance for signal cables by railway are better satisfied.
Description
Technical field
The utility model relates to cable, Power-line technology field, specifically a kind of two flap support railway signal cables that are used for the digital signal and the inner shield digital signal of main line railway, high-speed railway and city underground.
Background technology
At present; The signal system of main line railway, high-speed railway and subway is used (inner shield) digital signal cable in a large number; The copper conductor that this cable employing diameter is 1.0mm extrudes " skin-bubble-Pi " polyolefin insulation layer outward; Process the insulation heart yearn of each color such as red, white, blue, green, and then with four insulated heart yearns through stranded formation star quad stranding group, the outer looping shielded metal layer of star quad stranding group constitutes inner shield star quad stranding group; Star quad stranding group and inner shield star quad stranding group all are BTU Basic Transmission Units of cable, and some BTU Basic Transmission Units are carried out stranded formation cable conductor.In the star quad stranding group is in the BTU Basic Transmission Unit of cable, expects red-Bai, orchid-green transmission line to complete symmetry, and like this, the electric index of cable (general>1000m) on overall length just can be consistent with even.But; The star quad stranding group structural instability of existing cable; Make and the cable laying operation process in, to the cable bending of reeling repeatedly, the external force of generation is prone to cause four heart yearn slide relative to become " ◇ " shape; And imperfect " " shape, actual each section of cable electric parameter that causes is dispersed big and index is overproof easily.In addition, inner shield star quad stranding group is because the insulation that the shielded metal band of outsourcing is prone to thrust core, and foamed insulation self mechanical strength is low in addition, usually causes cable electrical to puncture, and has increased manufacture difficulty and percent defective.
The even more serious defective that existing cable exists is; The insulating barrier of its heart yearn is polyolefine material " skin-bubble-Pi " structure through foaming; Though this structure has reduced the mutual capacitance between cable pair effectively, can better satisfy the requirement of Train Control transmission of Information, because foaming; Obviously reduced the mechanical strength of insulating barrier, the anti-compression properties of insulated wire cores is merely 600--700N/1min.Along with digital signal cable is popularized in an all-round way and widely applied at main line railway, high-speed railway; Expose the defective that the cable core insulation can not tolerate normal external force; In cable construction and regular maintenance, particularly manifest, so that breakage takes place in insulating barrier often, cause cable swinging cross or short circuit; Cause the railway signal system fault, become the maximum potential safety hazard of railway transportation.For this reason, provide a kind of line between mutual capacitance low, electric property is stable and high (inner shield) railway digital signal cable of insulating barrier mechanical strength has become an urgent demand of railway authorities.
The utility model content
The purpose of the utility model is a kind of pair of flap support railway signal cable that provides to the deficiency of prior art; It adopts two flap supports is set in the cable; Each heart yearn placed in the support isolate effectively, protect and accurately fixing; Obviously improved the mechanical strength of cable insulation, greatly reduce line to a mutual capacitance and each line to the electric capacity conformity error and reduced line to crosstalk effect.
The concrete technical scheme that realizes the utility model purpose is: a kind of pair of flap support railway signal cable, comprise cable core, insulation heart yearn and sheath, and be characterized in that cable core is concentric circles setting by several transmission units and forms; Transmission unit is to be arranged on the support star quad stranding group that several insulation heart yearns constitute in the support, the outer or looping shielded metal layer of its support star quad stranding group; Support is " ten " cabinet frame that is provided with two flaps, and its end face is orthogonal two " worker " shape; Sheath is arranged on outside the cable core and the cable core parcel is one.
Said support and cable are isometric.
The utility model compared with prior art has simple in structure; The cable electrical performance is more stable; Core insulation layer mechanical strength obviously improves, and overcome defective and deficiency that existing cable exists, satisfied high safety, high performance instructions for use that railway proposes signal cable better.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the transmission unit structural representation;
Fig. 3 implements illustration for transmission unit;
Fig. 4 is the supporting structure sketch map.
Embodiment
The utility model is such processing and fabricating: together send into the support star quadding machine with insulation heart yearn 2 and support 5 red, white, blue, green color mark respectively with four; The support star quadding machine is placed on four insulated heart yearns 2 respectively in four spaces in the support 5 and is the support star quad stranding group transmission unit 4 of railway digital signal cable; Or looping inner shield metal level 7 backs are the support star quad stranding group transmission unit 4 of internal screening railway digital signal cable outside two flaps 6 of support 5; Several transmission units 4 through stranding stranded for after having the cable core 1 of stable concentric structure setting by the cable extruder cable core 1 outerwrap sheath 3 and with cable core 1 hard-pressed bale be one, sheath 3 is plastic sheath, composite sheath and aluminium sheath.
The utility model reaches 1360--1500N/1min through the anti-compression properties of surveying insulated wire cores 2 and does not puncture; The work of finished product star quad stranding group to capacitance deviation only ± 1nF/km; It is low that the support 5 that is provided with two flaps 6 has solved the insulating barrier mechanical strength that existing cable exists; Be prone to the unsettled defective of electric index and the deficiency of puncture and cable between inner shield metal level 7 and the insulation heart yearn 2, simultaneously, also omitted existing cable star quad stranding group and tied up the three-layer plastic band between yarn and shielded metal layer 7 and the heart yearn 2 outward; Thereby the utility model do not increase at the outside diameter of cable, and electric property improves greatly.
More than just the utility model being further described, is not in order to the restriction this patent, and all is that the utility model equivalence is implemented, and all should be contained within the claim scope of this patent.
Claims (2)
1. a two flap support railway signal cable comprises cable core (1), insulation heart yearn (2) and sheath (3), it is characterized in that cable core (1) is concentric circles setting by several transmission units (4) and forms; Transmission unit (4) is for being arranged on the support star quad stranding group that several insulation heart yearns (2) constitute in the support (5), the outer or looping shielded metal layer (7) of its support star quad stranding group; Support (5) is for being provided with " ten " cabinet frame of two flaps (6), and its end face is orthogonal two " worker " shape; Sheath (3) is arranged on outside the cable core (1) and cable core (1) parcel is one.
2. according to said pair of flap support of claim 1 railway signal cable, it is characterized in that said support (5) and cable are isometric.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204399864U CN202307251U (en) | 2011-11-09 | 2011-11-09 | Double-protective wing support railway signal cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204399864U CN202307251U (en) | 2011-11-09 | 2011-11-09 | Double-protective wing support railway signal cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202307251U true CN202307251U (en) | 2012-07-04 |
Family
ID=46376096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204399864U Expired - Fee Related CN202307251U (en) | 2011-11-09 | 2011-11-09 | Double-protective wing support railway signal cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202307251U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102446583A (en) * | 2011-11-09 | 2012-05-09 | 上海汉欣电缆技术有限公司 | Railway signal cable with double-protective wing bracket |
| CN104658665A (en) * | 2015-02-09 | 2015-05-27 | 江苏亨通线缆科技有限公司 | Comprehensive data cable for access network |
-
2011
- 2011-11-09 CN CN2011204399864U patent/CN202307251U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102446583A (en) * | 2011-11-09 | 2012-05-09 | 上海汉欣电缆技术有限公司 | Railway signal cable with double-protective wing bracket |
| CN104658665A (en) * | 2015-02-09 | 2015-05-27 | 江苏亨通线缆科技有限公司 | Comprehensive data cable for access network |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120704 Termination date: 20141109 |
|
| EXPY | Termination of patent right or utility model |