CN217181861U

CN217181861U - Environment-friendly cold-resistant rubber jacketed flexible cable

Info

Publication number: CN217181861U
Application number: CN202220296248.7U
Authority: CN
Inventors: 邱金波; 王超; 姚汪宁; 黄桂领; 王洪超
Original assignee: Zhejiang Zetastone Special Cable Co ltd
Current assignee: Zhejiang Zetastone Special Cable Co ltd
Priority date: 2022-02-14
Filing date: 2022-02-14
Publication date: 2022-08-12
Anticipated expiration: 2032-02-14

Abstract

The utility model discloses a cold-resistant rubber cover flexible cable of environment-friendly, twist jointly around a regular pentagon TPU elastomer filler core and constitute the cable core including five insulation core, the longitudinal hole has been seted up to the TPU elastomer filler core, the longitudinal hole endotheca is equipped with stainless steel wire and strengthens the core, stainless steel wire strengthens the core and forms for aramid fiber bundle and stainless steel wire transposition, longitudinal hole pore wall thickness is not less than 0.45mm, the outside cladding of cable core has polyester fiber plain weave in proper order around the covering, the crowded package inner sheath layer of TPU, the antitorque package oversheath layer around covering and TPU of nylon wire, insulation core includes the inner conductor, nylon resin winds package isolation layer and XLPE insulating layer, the inner conductor is that a plurality of tin-plated copper monofilaments twist jointly around the tensile fibre core of counterpoint type aromatic series copolyamide. The cable can endure a severe cold environment, is excellent in torsion resistance, avoids breaking and breaking, is good in safety and reliability, is green and environment-friendly, and does not pollute the environment.

Description

Environment-friendly cold-resistant rubber jacketed flexible cable

Technical Field

The utility model relates to the technical field of cables, especially, relate to a cold-resistant rubber cover flexible cable of environment-friendly.

Background

The rubber sheathed flexible cable suitable for rated voltage of 450/750V and below is commonly used for connecting various frequently mobile electrical equipment, needs to bear moderate mechanical pressure, and needs to keep flexibility while ensuring the tear resistance. However, in the working process of the common flexible cable with the rubber sheath, the bearing running capacity is insufficient, the torsion resistance effect is poor, the common flexible cable is made of the traditional insulating material and is cold, particularly, in a severe environment of-40 ℃, the insulating sheath can be hardened and fragile, the flexibility of the cable is poor, the cable is easy to break when subjected to repeated bending, the safety and the reliability are poor, and the potential safety hazard is caused.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to prior art not enough, the technical problem that solve provides a cold-resistant rubber jacketed flexible cable of environment-friendly, can tolerate severe cold environment, and resistant turning performance is excellent, avoids breaking off the line, and fail safe nature is good, green, the non-staining environment.

The utility model discloses a make above-mentioned technical problem solve through following technical scheme.

Cold-resistant rubber of environment-friendly overlaps flexible cable, constitute the cable core around the common transposition of a regular pentagon TPU elastomer filling core including five insulation core, the longitudinal hole has been seted up to the TPU elastomer filling core, the longitudinal hole endotheca is equipped with stainless steel wire and strengthens the core, stainless steel wire strengthens the core and forms for aramid fiber bundle and stainless steel wire transposition, longitudinal hole pore wall thickness is not less than 0.45mm, the cable core outside cladding has polyester fiber plain weave in proper order around covering, TPU crowded package inner sheath layer, the antitorque package oversheath layer of nylon wire around covering and TPU, insulation core includes inner conductor, nylon resin around covering isolation layer and XLPE insulating layer, the inner conductor is that a plurality of tin-plated copper monofilaments form around the common transposition of counterpoint type aromatic series aromatic copolyamide tensile fiber core.

Preferably, the longitudinal hole is filled with insulating lubricating silicone grease.

Preferably, the aramid fiber bundles are formed by twisting a plurality of aramid fibers and integrally bonding the aramid fibers and thermoplastic polypropylene resin in a hot melting way.

Preferably, the stainless steel wire reinforcing core has an outer diameter smaller than the inner conductor outer diameter and larger than the para-type wholly aromatic copolyamide drawn fiber core material outer diameter.

Preferably, the diameter of the tin-plated copper monofilament is 0.8mm to 1.5 mm.

Preferably, the stainless steel wire has a wire diameter of 0.05mm to 0.08 mm.

Preferably, the lay length of the cable core is 15 to 30 times of the outer diameter of the insulated wire core.

Preferably, the polyester fiber plain weave lapping layer is of a polyester fiber plain weave one-way spiral lapping and covering lapping structure.

Preferably, the nylon wire anti-twisting wrapping layer is a double-layer nylon wire mutually reverse spiral winding weaving structure, the wire diameter of the inner layer nylon wire is 0.15mm to 0.28mm, and the wire diameter of the outer layer nylon wire is 0.24mm to 0.35 mm.

Preferably, the outer surface of the TPU extruded inner sheath layer and the inner surface of the TPU extruded outer sheath layer are both provided with thermoplastic EVA bonding layers.

The utility model has the advantages that:

1. through the regular pentagon TPU elastomer filling core that increases special construction, lateral pressure when can help the cable core to bear the bending, improve the pliability, it forms for aramid fiber bundle and stainless steel wire transposition to add stainless steel wire reinforcement core, high tensile strength has, excellent tensile resistance, the cable bears the weight of the operating capability greatly, make the cable keep better circular cross section in bending process, vertical hole pore wall thickness is not less than 0.45mm and is of value to and prevents to take place signal crosstalk between the insulation core, guarantee the stable electrical characteristics of cable, safety and reliability.

2. The nylon wire anti-torsion wrapping layer is arranged between the TPU extruded inner sheath layer and the TPU extruded outer sheath layer, and the special weaving structure of the nylon wire anti-torsion wrapping layer is beneficial to improving the tensile strength and the anti-torsion performance of the cable, avoiding the occurrence of wire breakage and core breakage, improving the safety and reliability and reducing the potential safety hazard.

3. The XLPE insulating layer has excellent cold resistance, is not easy to crack even under the low-temperature impact condition of minus 40 ℃, and has good flexibility. The TPU sheath has outstanding cold resistance, good elasticity and flexibility under low-temperature environment and severe conditions, excellent ageing resistance and weather resistance and long service life.

4. The cable meets the requirement of environmental-friendly cables, does not contain harmful substances to human health, does not release smoke and toxic gas in burning flame, can be completely recycled, has no pollution to the environment, and is beneficial to environmental protection and renewable treatment.

Drawings

In order to clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.

Fig. 1 is a schematic cross-sectional structure diagram of an embodiment of the present application.

Reference numerals: 1-an insulating wire core, 11-an inner conductor, 12-a nylon resin wrapping isolation layer, 13-a XLPE insulating layer, 14-a para-type wholly aromatic copolyamide tensile fiber core material, a 2-regular pentagonal TPU elastomer filling core, 3-a stainless steel wire reinforcing core, 4-a polyester fiber plain weave wrapping layer, 5-a TPU extruded inner sheath layer, 6-a nylon wire anti-torsion wrapping layer and 7-a TPU extruded outer sheath layer.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1, the utility model discloses cold-resistant rubber jacketed flexible cable of environment-friendly, constitute the cable core including five insulation core 1 around the common transposition of a regular pentagon TPU elastomer filler 2, the cable core lay length does 15 to 30 times of 1 external diameter of insulation core. The TPU elastomer filling core 2 is provided with a longitudinal hole, the wall thickness of the longitudinal hole is not less than 0.45mm, and further, the longitudinal hole is filled with insulating lubricating silicone grease. Stainless steel wire reinforcement core 3 is nested in the longitudinal hole, stainless steel wire reinforcement core 3 is formed by twisting aramid fiber bundles and stainless steel wires, specifically, the aramid fiber bundles are formed by twisting a plurality of aramid fibers and are integrated with thermoplastic polypropylene resin through hot melt bonding, and the diameter of the stainless steel wire is 0.05mm to 0.08 mm. The insulated wire core 1 comprises an inner conductor 11, a nylon resin lapping isolation layer 12 and an XLPE insulation layer 13, wherein the inner conductor 11 is formed by jointly twisting a plurality of tin-plated copper monofilaments around a contraposition type wholly aromatic copolyamide tensile fiber core material 14, and the wire diameter of the tin-plated copper monofilaments is 0.8mm to 1.5 mm. Further, the outer diameter of the stainless steel wire reinforcing core 3 is smaller than the outer diameter of the inner conductor 11 and larger than the outer diameter of the para-type wholly aromatic copolyamide drawn fiber core 14.

The cable core outside cladding has polyester fiber plain weave in proper order around covering 4, TPU extruded inner jacket layer 5, the antitorque covering 6 and TPU extruded outer jacket layer 7 around the covering of nylon thread, and is further, 5 surfaces of TPU extruded inner jacket layer and 7 internal surfaces of TPU extruded outer jacket layer all are equipped with the thermoplasticity EVA adhesive linkage. In one embodiment, the polyester fiber plain cloth wrapping layer 4 is a polyester fiber plain cloth one-way spiral lapping and wrapping structure. In one embodiment, the nylon wire anti-twist lapping layer 6 is a double-layer nylon wire reverse spiral winding weaving structure, the wire diameter of the inner layer nylon wire is 0.15mm to 0.28mm, and the wire diameter of the outer layer nylon wire is 0.24mm to 0.35 mm.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. Cold-resistant rubber of environment-friendly overlaps flexible cable, characterized by: comprises five insulated wire cores (1) which are twisted together around a regular pentagonal TPU elastomer filling core (2) to form a cable core, the TPU elastomer filling core (2) is provided with a longitudinal hole, a stainless steel wire reinforcing core (3) is sleeved in the longitudinal hole, the stainless steel wire reinforced core (3) is formed by twisting aramid fiber bundles and stainless steel wires, the thickness of the wall of the longitudinal hole is not less than 0.45mm, the cable core is sequentially coated with a polyester fiber plain weave lapping layer (4), a TPU extruded inner jacket layer (5), a nylon wire anti-torsion lapping layer (6) and a TPU extruded outer jacket layer (7) outside, the insulated wire core (1) comprises an inner conductor (11), a nylon resin wrapping isolation layer (12) and an XLPE insulation layer (13), the inner conductor (11) is formed by twisting a plurality of tinned copper monofilaments together around a para-type wholly aromatic copolyamide drawn fiber core material (14).

2. The environment-friendly cold-resistant rubber jacketed flexible cable of claim 1, which is characterized in that: and the longitudinal hole is filled with insulating lubricating silicone grease.

3. The environment-friendly cold-resistant rubber jacketed flexible cable of claim 1, which is characterized in that: the aramid fiber bundles are formed by twisting a plurality of aramid fibers and bonding the aramid fibers and thermoplastic polypropylene resin into a whole in a hot melting way.

4. The environment-friendly cold-resistant rubber jacketed flexible cable of claim 1, which is characterized in that: the outer diameter of the stainless steel wire reinforcing core (3) is smaller than the outer diameter of the inner conductor (11) and larger than the outer diameter of the para-type wholly aromatic copolyamide drawn fiber core material (14).

5. The environment-friendly cold-resistant rubber jacketed flexible cable of claim 1, which is characterized in that: the diameter of the tinned copper monofilament is 0.8mm to 1.5 mm.

6. The environment-friendly cold-resistant rubber jacketed flexible cable of claim 1, which is characterized in that: the diameter of the stainless steel wire is 0.05mm to 0.08 mm.

7. The environment-friendly cold-resistant rubber jacketed flexible cable of claim 1, which is characterized in that: the cable core lay length is 15 to 30 times of the outer diameter of the insulated wire core (1).

8. The environment-friendly cold-resistant rubber jacketed flexible cable of claim 1, which is characterized in that: the polyester fiber plain weave lapping layer (4) is of a polyester fiber plain weave unidirectional spiral lapping and lapping structure.

9. The environment-friendly cold-resistant rubber jacketed flexible cable of claim 1, which is characterized in that: the nylon wire anti-torsion lapping layer (6) is a double-layer nylon wire mutually reverse spiral winding weaving structure, the wire diameter of the inner layer nylon wire is 0.15mm to 0.28mm, and the wire diameter of the outer layer nylon wire is 0.24mm to 0.35 mm.

10. The environment-friendly cold-resistant rubber jacketed flexible cable of claim 1, which is characterized in that: the outer surface of the TPU extruded inner sheath layer (5) and the inner surface of the TPU extruded outer sheath layer (7) are both provided with thermoplastic EVA adhesive layers.