CN210349400U

CN210349400U - Anti-frost-heaving railway signal cable

Info

Publication number: CN210349400U
Application number: CN201921751971.4U
Authority: CN
Inventors: 程晶; 黄世虎; 段斌; 程伟; 张红伟
Original assignee: Jiangxi Hanguang Cable Co ltd
Current assignee: Jiangxi Hanguang Cable Co ltd
Priority date: 2019-10-18
Filing date: 2019-10-18
Publication date: 2020-04-17
Anticipated expiration: 2029-10-18

Abstract

The utility model relates to a communication cable technical field specifically is an anti frost heaving railway signal cable, including cable outer lane, cable inner circle, heat preservation, filling block and conductor sheath, the conductor sheath cladding is in the conductor outside, and the cladding of conductor sheath outside has the cable inner circle, and it has the filling block to fill between cable inner circle and the conductor sheath, and the even inlaying of conductor sheath is connected in the filling block, inlays in the middle of the filling block and connects the reinforcement bar, and the cable inner circle includes the PVC inlayer at the inlayer, and PVC inlayer outside cover is equipped with the PVC skin, and beneficial effect is: have stronger toughness, increased the protection intensity of cable outer lane to increase the heat preservation, can effectively promote the freeze proof ability of cable, still increased the buffer layer, can cushion the frost heaving force that produces under the severe cold weather through the buffer layer, increase the anti frost heaving force intensity of cable, increase the result of use of cable, improve cable life, prevent that the cable from being damaged by frost heaving force and influencing the use.

Description

Anti-frost-heaving railway signal cable

Technical Field

The utility model relates to communication cable technical field specifically is an anti frost heaving railway signal cable.

Background

China is wide in breadth, has 49 latitudes in north and south longitudinal directions, has 62 longitudes in east and west directions, and has complex and various geographic conditions and climates. According to the contents of railway planning in the thirteen-five period by development and improvement committee, a plurality of lines need to pass through the high-cold frozen soil region. Under the severe cold laying environment, the railway signal control cable has extremely low long-term working temperature, particularly, the corrosion of moist steam to the cable, the volume is increased in the process that moisture is frozen at zero ℃, occupied space is generated, other objects are squeezed, the force acting on the other objects is the frost heaving force, and the frost heaving force can damage the electrical performance and the physical performance of the cable.

The basic structure of the existing railway signal cable is mostly an outer heat-insulating layer and a cable core in the outer heat-insulating layer, and the cable core consists of insulating core wires divided into a plurality of wire groups. The frost resistance of this kind of cable is relatively poor to can appear the frozen swelling power and freeze the cracked condition with the cable under severe cold weather, current cable frost resistance ability is relatively poor, causes the cable to damage easily, influences the use, for this reason, the utility model provides an anti frozen swelling railway signal cable is used for solving above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an anti frost heaving railway signal cable to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: an anti-frost heaving railway signal cable comprises a cable outer ring, a cable inner ring, a heat insulation layer, a filling block and a conductor sheath, the conductor sheath is covered outside the conductor, the outer side of the conductor sheath is covered with an inner cable ring, a filling block is filled between the inner cable ring and the conductor sheath, the conductor sheath is uniformly embedded and connected in the filling block, reinforcing ribs are embedded and connected in the middle of the filling block, the inner ring of the cable comprises an innermost PVC inner layer, a PVC outer layer is sleeved on the outer side of the PVC inner layer, a PP foaming layer is filled between the PVC inner layer and the PVC outer layer, the outer side of the cable inner ring is coated with the cable outer ring, the cable outer ring comprises an innermost heat insulation layer, a reinforcing core is embedded and connected in the heat insulation layer, the heat-insulating layer is coated with a toughening net, the toughening net is coated with a shielding net, and the shielding net is coated with a polyethylene sheath.

Preferably, the reinforced cores are formed by weaving resin fibers and polypropylene ropes through a plain knot weaving method, the reinforced cores are fixed and limited through transverse reinforced cores, and the reinforced cores are woven into a net shape to be wrapped inside the heat insulation layer.

Preferably, the shielding net is manufactured by integrally compression molding a woven layer and an aluminum foil layer, and the shielding net wraps the toughening net and the insulating layer.

Preferably, the toughening net is coated and embedded outside the heat-insulating layer, and is woven by glass fiber materials.

Preferably, the PVC inlayer outside and the outer inboard of PVC are equipped with corresponding latch, correspond each other between the latch, and the middle PP foaming layer of filling, the outer wall of PVC inlayer inner wall laminating inner conductor sheath.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses have stronger toughness, increased the protective strength of cable outer lane to increase the heat preservation, can effectively promote the freezing resisting ability of cable, still increased the buffer layer, can cushion the frost heaving force that produces under the severe cold weather through the buffer layer, increase cable frost heaving resistance strength, increase the result of use of cable, improve cable life, prevent that the cable from being damaged by frost heaving force and influencing the use.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is an enlarged schematic view of the structure at a in fig. 1.

In the figure: the cable comprises a cable outer ring 1, a cable inner ring 2, a heat-insulating layer 3, a reinforcing core 4, a polyethylene sheath 5, a shielding net 6, a toughening net 7, a filling block 8, a conductor sheath 9, a conductor 10, reinforcing ribs 11, a PVC inner layer 12, a PP foaming layer 13 and a PVC outer layer 14.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 2, the present invention provides a technical solution: an anti-frost heaving railway signal cable comprises a cable outer ring 1 and a cable inner ring 2, heat preservation 3, filling block 8 and conductor sheath 9, the cladding of conductor sheath 9 is in the conductor 10 outside, the cladding of conductor sheath 9 outside has cable inner circle 2, it has filling block 8 to fill between cable inner circle 2 and the conductor sheath 9, the even connection of inlaying of conductor sheath 9 is in filling block 8, inlay the connection reinforcement muscle 11 in the middle of filling block 8, cable inner circle 2 includes the PVC inlayer 12 of inlayer, PVC inlayer 12 outside cover is equipped with PVC outer 14, it is provided with PP foaming layer 13 to fill between PVC inlayer 12 and the PVC skin, 2 outside cladding cable outer lane 1 of cable inner circle, cable outer lane 1 includes the heat preservation 3 of the most inboard, 3 inside inlays of heat preservation is connected with

enhancement core

4, 3 outside claddings of heat preservation have tough net 7, add tough 7 outside claddings of net 6, 6 outside cladding polyethylene sheath 5 of shield net 6.

The utility model discloses can further set up to, strengthen core 4 and weave through the plain knot braid over braid by resin fiber and polypropylene rope and form, strengthen between the core 4 through horizontal strengthening core fixed spacing, weave into netted cladding inside heat preservation 3, can strengthen the tightness and the toughness of heat preservation 3 through strengthening core 4, increase heat preservation 3's life to through strengthening core 4 supplementary cold-resistant heat preservation that carries on, increase cable freezing resistance.

The utility model discloses can further set up to, shielding net 6 is passing through weaving layer and the integrative preparation of aluminium foil layer compression moulding, and shielding net 6 parcel is adding tough net 7 and the 3 outsides of heat preservation.

The utility model discloses can further set up to, add tough net 7 cladding and inlay and connect in the 3 outsides of heat preservation, add tough net 7 and weave through glass fiber material and form, can increase the holistic toughness of cable through adding tough net 7, increase cable tensile resistance, the reinforcing promotes the result of use to the resistance of frozen swelling power.

The utility model discloses can further set up to, the PVC inlayer 12 outside and the outer 14 inboard of PVC are equipped with corresponding latch, correspond each other between the latch, middle PP foaming layer 13 of packing, the outer wall of PVC inlayer 12 inner wall laminating inner conductor sheath 9, can increase cable inner circle 2's hardness through PVC inlayer 12 and the outer 14 of PVC, it is out of the line and warp to the cable, and cable inner circle 2 can promote the buffering effect of cable to the frost heaving force, increase the frost-proof anti-deformation effect of cable, increase result of use and life.

The working principle is as follows: when the cable is in work, the outer side of a conductor 10 is coated with a conductor sheath 9, then the outer sides of a plurality of conductor sheaths 9 are coated with a cable inner ring 2, a filling block 8 is filled between the conductor sheath 9 and the cable inner ring 2, the conductor sheath 9 is uniformly coated inside the filling block 8, then the outer side of the cable inner ring 2 is coated with a heat-insulating layer 3, a reinforcing core 4 is embedded and connected in the heat-insulating layer 3, the outer side of the heat-insulating layer 3 is coated with a toughening net 7, the outer side of the toughening net 7 is coated with a shielding layer 6, the outer side of the shielding layer 6 is coated with a polyethylene sheath 5 to complete the cable composition, the cable inner ring 2 can play a role in buffering, the freezing force generated under severe cold weather is buffered, the freezing expansion force resistance of the cable is increased, the influence of the external temperature can be reduced through the heat-insulating layer 3, the freezing resistance of the cable is improved, the strength and the toughness, and the reinforced core 4 can play a role in auxiliary heat preservation.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an anti frost heaving railway signal cable, includes cable outer lane (1), cable inner circle (2), heat preservation (3), filling block (8) and conductor sheath (9), its characterized in that: the cable is characterized in that the conductor sheath (9) is coated on the outer side of the conductor (10), the outer side of the conductor sheath (9) is coated with the cable inner ring (2), a filling block (8) is filled between the cable inner ring (2) and the conductor sheath (9), the conductor sheath (9) is uniformly embedded and connected in the filling block (8), a connecting reinforcing rib (11) is embedded in the middle of the filling block (8), the cable inner ring (2) comprises an innermost PVC inner layer (12), a PVC outer layer (14) is sleeved on the outer side of the PVC inner layer (12), a PP foaming layer (13) is filled between the PVC inner layer (12) and the PVC outer layer, the outer side of the cable inner ring (2) is coated with the cable outer ring (1), the cable outer ring (1) comprises an innermost heat insulation layer (3), a reinforcing core (4) is connected to the inner side of the heat insulation layer (3), and a toughening net (7) is coated on, the outer side of the toughening net (7) is coated with a shielding net (6), and the outer side of the shielding net (6) is coated with a polyethylene sheath (5).

2. The frost heave resistant railway signal cable of claim 1, wherein: the reinforced cores (4) are formed by weaving resin fibers and polypropylene ropes through a plain knot weaving method, the reinforced cores (4) are fixed and limited through transverse reinforced cores, and the reinforced cores are woven into a net shape to be wrapped inside the heat insulation layer (3).

3. The frost heave resistant railway signal cable of claim 1, wherein: the shielding net (6) is integrally manufactured by compression molding of a woven layer and an aluminum foil layer, and the shielding net (6) wraps the toughening net (7) and the insulating layer (3).

4. The frost heave resistant railway signal cable of claim 1, wherein: the toughening net (7) is coated and embedded on the outer side of the heat-insulating layer (3), and the toughening net (7) is woven by glass fiber materials.

5. The frost heave resistant railway signal cable of claim 1, wherein: PVC inlayer (12) outside and PVC skin (14) inboard are equipped with corresponding latch, correspond each other between the latch, and middle PP foaming layer (13) of filling, the outer wall of PVC inlayer (12) inner wall laminating inner conductor sheath (9).