CN204423950U

CN204423950U - The fire-retardant flat cable of reel stretching resistance

Info

Publication number: CN204423950U
Application number: CN201520116796.7U
Authority: CN
Inventors: 束海平; 蒋爱祥
Original assignee: Jiangsu Tai Xiang Electric Wire Co Ltd
Current assignee: Jiangsu Tai Xiang Electric Wire Co Ltd
Priority date: 2015-02-26
Filing date: 2015-02-26
Publication date: 2015-06-24
Anticipated expiration: 2025-02-26

Abstract

The utility model discloses the fire-retardant flat cable of a kind of reel stretching resistance, comprise core conductor and sheath, described core conductor comprises three master core conductors and a subordinate line core conductor, and the core area of subordinate line core conductor and the ratio of master core conductor thread core area are 1-1/3; Four core conductor rows are in a row, and each core conductor is coated with insulation glue-line, and insulation glue-line is outside equipped with braid; Upper and lower both sides outside four core conductors are also respectively arranged with a row and strengthen flexible cord core; Outside the braid that described sheath is coated on four core conductors and strengthening core.The fire-retardant flat cable of reel stretching resistance of this utility model can not only adapt to reel folding and unfolding, and bending radius is little, long service life, and cost is lower.

Description

The fire-retardant flat cable of reel stretching resistance

Technical field

The utility model relates to a kind of cable, particularly relates to the flat cable by reel folding and unfolding in a kind of work.

Background technology

On the power consumption equipment that power plant coal washing unit, large-scale mobile portal jib crane etc. work at the volley, cable used adopts reel to carry out folding and unfolding usually, cable one end is connected on power consumption equipment, other end fixing wound is connected with power supply on reel, when power consumption equipment travels forward, spool turns and discharge cable, makes it move forward with power consumption equipment, when power consumption equipment moves backward, reel rotates backward and is received by cable winding.Due to cable between power consumption equipment and reel repeatedly retractable move, bear larger pulling force and friction.

Existing cable used on reel is conventional round cable, the ethylene propylene rubber insulated core that 4 wire diameters are identical squeezes one deck polyvinyl chloride round rubber sheath again after stranding, this kind of cable reels in folding and unfolding process on reel, out conductor core conductor bending radius differs greatly, out conductor core conductor is subject to larger tension stress, inside cord core conductor is by larger compression, and the construction of cable of circle makes in each core conductor wherein, outer fix is change at random, core is caused constantly to bear the indefinite alternate stress of size in the course of the work like this, very easily cause fractureing of core conductor, and because its insulated wire cores of this kind of cable is that stranding is combined, when alternating bending campaign each insulated wire cores insulating barrier between extrude mutually, also very easily form mechanical injuries and insulating barrier is damaged, cause whole cable to be scrapped, in addition, the use occasion due to this kind of cable is mostly client cables, the power consumption equipment three-phase equilibrium that is suitable for, its four insulated wire cores wire diameters are identical, then as the insulated wire cores bearing capacity surplus comparatively speaking of the neutral line, its usage economy is unreasonable.

Utility model content

For the above-mentioned deficiency existing for prior art, technical problem to be solved in the utility model is to provide the fire-retardant flat cable of a kind of reel stretching resistance, and it can not only adapt to reel folding and unfolding, and bending radius is little, long service life, and cost is lower.

In order to solve the problems of the technologies described above, the fire-retardant flat cable of a kind of reel stretching resistance of the present utility model, comprise core conductor and sheath, described core conductor comprises three master core conductors and a subordinate line core conductor, and the core area of subordinate line core conductor and the ratio of master core conductor thread core area are 1-1/3; Four core conductor rows are in a row, and each core conductor is coated with insulation glue-line, and insulation glue-line is outside equipped with braid; Upper and lower both sides outside four core conductors are also respectively arranged with a row and strengthen flexible cord core; Outside the braid that described sheath is coated on four core conductors and strengthening core.

In said structure, because four core conductor rows are in a row, each core conductor is coated with insulation glue-line, insulation glue-line is outside equipped with braid, when then cable produces bending in the course of the work, the bending radius of each core conductor is identical, excessive bending radius would not be produced like this, also easily as round cable distortion can not be subject to and rapid wear, and also can not produce extruding and friction between each cable, the life-span of cable is guaranteed, the braid that insulation glue-line peripheral hardware is put can produce good protected effect to core conductor, improve the tensile strength of core conductor, strengthen flexible cord core because the upper and lower both sides outside four core conductors are also respectively arranged with a row again, like this, the tensile strength of whole cable obtains larger lifting, outside the braid being also coated on four core conductors due to described sheath and strengthening core, then, in the braid of core conductor, core conductor and strengthening core are all coated on by sheath, braid and strengthening core can be made all to obtain good protection, and described core conductor comprises three master core conductors and subordinate line core conductor, the core area of subordinate line core conductor and a ratio for master core conductor thread core area are 1-1/3, then three master core conductors can meet the power reguirements of power consumption equipment, subordinate line core conductor core area is less can meet power supply safety requirement as earth connection, makes whole cable cost relatively low.

A kind of preferred implementation of the present utility model, described master core conductor specification is 35mm ², described subordinate line core conductor specification is 16mm ².Adopt this execution mode, the specification of master core conductor and subordinate line core conductor can meet the power load requirement of the equipment such as power plant coal washing unit, large-scale mobile crane.

Another kind of preferred implementation of the present utility model, described insulation glue-line is ethylene propylene diene rubber insulation glue-line.Adopt this execution mode, ethylene propylene diene rubber has the features such as insulation property are high, elongation pliability is good, is applicable to the instructions for use of reel cable.

Another preferred implementation of the present utility model, described braid is high strength polypropylene fiber silk braid.Adopt this execution mode, high strength polypropylene fiber silk brute force is high, can bear the part pulling force of cable, higher the tensile strength of increase line core conductor.

The further preferred implementation of the utility model, described reinforcement flexible cord core is that wire diameter is less than the stone dead wire of 0.8mm or stranded stone dead wire, and adjacent two spacing strengthened between flexible cord core are 5-10mm.Adopt this execution mode, strengthen soft-core wire wire diameter thin, pliability is good, can adapt to the instructions for use of reel cable well, and adjacent two spacing strengthened between flexible cord core are less, can meet the powerful requirement of cable.

Another further preferred implementation of the utility model, described sheath is chlorinated polyethylene rubber sheath, and its cross-sectional shape is rectangle, and rectangular length-width ratio is 3-6.Adopt this execution mode; chlorinated polyethylene rubber has good fire-retardant, oil resistant, the characteristic such as wear-resisting; can be core conductor and well fire-retardant and wear-resistant protection is provided; the sheath cross-sectional shape be rectangle makes it corresponding with the spread pattern of four core conductors; meet the requirement of the use on reel, the rectangular length-width ratio in its cross section is that 3-6 makes sheath can adapt to the requirement of arrangement pitches between conventional each core conductor.

Accompanying drawing explanation

Below in conjunction with the drawings and specific embodiments, the fire-retardant flat cable of the utility model reel stretching resistance is described in further detail.

Fig. 1 is the structural representation of a kind of embodiment of the fire-retardant flat cable of the utility model reel stretching resistance.

In figure: 1-master core conductor, 2-insulation glue-line, 3-braid, 4-strengthen flexible cord core, 5-sheath, 6-subordinate line core conductor.

Embodiment

In the fire-retardant flat cable of reel stretching resistance shown in Fig. 1, core conductor has four, comprise three master core conductors 1 and a subordinate line core conductor 6, the core area of subordinate line core conductor 6 and the ratio of master core conductor 1 core area are between 1-1/3, and master core conductor 1 specification is 35mm ², form by the copper free wire of 276 0.4mm is stranded, it is 92mm that twisting pitch is not more than stranded external diameter 10 times, and subordinate line core conductor 6 specification is 16mm ², form by 126 0.4mmr copper free wires are stranded, twisting pitch is 50mm; Each core conductor is coated with insulation glue-line 2, and insulation glue-line 2 is ethylene propylene diene rubber insulation glue-line, and insulation glue-line 2 is outside equipped with braid 3, and braid 3 is high strength polypropylene fiber silk braid, and braid 3 weaves and forms after insulation glue-line 2 is extruded.

Four core conductor rows are in a row, upper and lower both sides outside four core conductors are also respectively arranged with a row and strengthen flexible cord core 4, strengthening flexible cord core 4 for wire diameter is less than the strands stone dead wire of 2mm, adjacent two spacing strengthened between flexible cord core 4 are 5-10mm, described sheath 5 is coated on the braid 3 of four core conductors and strengthens outside flexible cord core 4, sheath 5 is chlorinated polyethylene rubber sheath, and its cross-sectional shape is the rectangle of long 64mm, wide 20mm, and rectangular length-width ratio between 3 and 6.

Below only list embodiments more of the present utility model, but the utility model is not limited in this, more improvement and conversion can also be made, as described in master core conductor 1 and subordinate line core conductor 6 may not be 35 mm ²and 16 mm ², and can be other specification; Described reinforcement flexible cord core 4 may not be the stranded stone dead wire that wire diameter is less than 0.8mm, but wire diameter is less than the single stone dead wire of 0.8mm.And so on, as long as improvement done on the utility model general principle basis and conversion, all should be considered as falling in protection range of the present utility model.

Claims

1. the fire-retardant flat cable of reel stretching resistance, comprise core conductor and sheath (5), it is characterized in that: described core conductor comprises three master core conductors (1) and a subordinate line core conductor (6), the core area of subordinate line core conductor (6) and the ratio of master core conductor (1) core area are 1-1/3; Four core conductor rows are in a row, and each core conductor is coated with insulation glue-line (2), and insulation glue-line (2) is outside equipped with braid (3); Upper and lower both sides outside four core conductors are also respectively arranged with a row and strengthen flexible cord core (4); Described sheath (5) is coated on the braid (3) of four core conductors and strengthens outside flexible cord core (4).

2. the fire-retardant flat cable of reel stretching resistance according to claim 1, is characterized in that: described master core conductor (1) specification is 35mm ², described subordinate line core conductor (6) specification is 16mm ².

3. the fire-retardant flat cable of reel stretching resistance according to claim 1, is characterized in that: described insulation glue-line (2) is ethylene propylene diene rubber insulation glue-line.

4. the fire-retardant flat cable of reel stretching resistance according to claim 1, is characterized in that: described braid (3) is high strength polypropylene fiber silk braid.

5. the fire-retardant flat cable of reel stretching resistance according to claim 1, is characterized in that: described reinforcement flexible cord core (4) is less than the stone dead wire of 0.8mm or stranded stone dead wire for wire diameter, and adjacent two spacing strengthened between flexible cord core (4) are 5-10mm.

6. the fire-retardant flat cable of reel stretching resistance according to claim 1, it is characterized in that: described sheath (5) is chlorinated polyethylene rubber sheath, and its cross-sectional shape is rectangle, rectangular length-width ratio is 3-6.