CN103474136A - Flexible cable for electrical connection of traveling crane and hoist - Google Patents

Abstract

The invention discloses a flexible cable for electrical connection of a traveling crane and a hoist. The flexible cable comprises a plurality of copper core conductors formed by twisting tinned copper wires into bundles; the plurality of copper core conductors are wrapped with aluminum foil insulating layers; the plurality of copper core conductors wrapped with the aluminum foil insulating layers are molded in an extrusion manner in a carried layer formed by the extrusion molding of silicone rubber so as to form a cable core; the cable core is wrapped with an EPDM (Ethylene-Propylene-Diene Monomer) rubber insulating layer; and a foaming plastic layer and a neoprene sheath layer are sequentially arranged outside the EPDM rubber insulating layer. The flexible cable is reasonable in structure design, namely, the flexibility and the distortion resistance of the cable are improved and the weight of the molded cable is decreased at the same time according to the structural design of the EPDM rubber insulating layer and the neoprene sheath layer which are matched with the carrier layer, the foaming plastic layer and the like. The flexible cable is strong in working environment adaptability, convenient to assemble and lay and long in service life.

Description

A kind of driving and crane electrical connection flexible cable

technical field:

The present invention relates to the cable process technology, relate in particular to a kind of driving and crane electrical connection flexible cable.

background technology:

The motor cable jumper that the volume driving of existing market upper end and crane are used is applicable to 2KV and following mostly, but there is certain defect in actual application, the flexibility that is mainly cable is poor, the phenomenons such as disconnected core often appear in warp resistance and frequent mobile environment, affect work, in addition, overall weight is larger, is not easy to mounting and installation.

summary of the invention:

In order to make up the prior art problem, the purpose of this invention is to provide the electrical connection of a kind of driving and crane and use flexible cable, improve greatly the flexibility of cable, and reduced the overall weight of cable, make mounting and installation become convenient and swift.

Technical scheme of the present invention is as follows:

Driving and crane electrical connection flexible cable, it is characterized in that: some copper core conductors that comprise the stranded bunchy of tinned copper wire, some copper core conductors all are coated with the aluminium foil separator that thickness is not more than 0.25mm outward, some copper core conductor extrusion moulding that coat the aluminium foil separator form cable core in the carrier layer of silicon rubber extrusion moulding, cable core is coated with the ethylene propylene diene rubber insulating barrier, and the ethylene propylene diene rubber insulating barrier is provided with foamed plastic layer, chloroprene rubber sheath layer outward successively.

Flexible cable is used in described driving and crane electrical connection, and it is characterized in that: the nominal thickness of the ethylene propylene diene rubber insulating barrier of described cable is 2.8mm, and the thinnest point is not less than 2.42 mm.

Flexible cable is used in described driving and crane electrical connection, and it is characterized in that: the nominal thickness of the chloroprene rubber sheath layer of described cable is 1.7mm, and the thinnest point is not less than 1.35 mm.

Advantage of the present invention is:

Reasonable in design of the present invention, by adopting ethylene propylene diene rubber insulating barrier and chloroprene rubber sheath layer, coordinate carrier layer, the isostructural design of foamed plastic layer, flexibility and the warp resistance performance of cable have not only been improved, also reduced the weight after the cable cabling simultaneously, working environment adaptability is strong, is convenient to mounting and installation, long service life.

the accompanying drawing explanation:

Fig. 1 is structural representation of the present invention.

embodiment:

Referring to Fig. 1:

Driving and crane electrical connection flexible cable, some copper core conductors 1 that comprise the stranded bunchy of tinned copper wire, some copper core conductors 1 are outer all is coated with the aluminium foil separator 2 that thickness is not more than 0.25mm, some copper core conductor 1 extrusion moulding that coat aluminium foil separator 2 form cable core in the carrier layer 3 of silicon rubber extrusion moulding, cable core is coated with ethylene propylene diene rubber insulating barrier 4, outer foamed plastic layer 5, the chloroprene rubber sheath layer 6 of being provided with successively of ethylene propylene diene rubber insulating barrier 4.

The nominal thickness of the ethylene propylene diene rubber insulating barrier 4 of cable is 2.8mm, and the thinnest point is not less than 2.42 mm.

The nominal thickness of the chloroprene rubber sheath layer 6 of cable is 1.7mm, and the thinnest point is not less than 1.35 mm.

Chloroprene rubber sheath layer 6 is coated with the insulating sleeve layer, and described insulating sleeve layer material is made by the raw material of following weight portion (kilogram):

SG-5 Corvic 100, nylon PA6 22, calcium carbonate 24, aluminium hydroxide 4, antimonous oxide 4, nano diatomite 14, lead stearate 3, chlorinated paraffin wax 8, zinc 2, titanate coupling agent TMC-TTS 2, talcum powder 21, dibutyl phthalate 3, compounded mix 5: described compounded mix is made by the raw material of following weight portion (kilogram): clay 10, schmigel 4, aluminium nitride 6, celestine 2, N-2-(aminoethyl)-3-aminopropyl trimethoxysilane 2, crosslinking agent TAC1, alum 8, zinc stearate 3, carborundum 1, ferrocene 2; The preparation method calcines clay, celestine 4-5 hour under 500-550 ℃, then, take out, add in suitable quantity of water and grind in the lump with alum, adding 10-15% hydrochloric acid solution tune PH is 4.-5.5, and ground slurry is to the 400-500 order, the repeated hydrogenation sodium oxide molybdena is adjusted to neutrality, filter washing, spray drying, obtain powder; The gained powder is mixed with other residual components, and ground and mixed evenly and get final product;

Described preparation method mixes nylon PA6, dibutyl phthalate, is heated to 220-230 ℃, then adds nano diatomite, lead stearate, chlorinated paraffin wax, aluminium hydroxide to stir kneading evenly; SG-5 Corvic, aluminium hydroxide, antimonous oxide are mixed simultaneously, be heated to 175-190 ℃, mixing kneading is even; Aforementioned nylon PA6 compound, SG-5 Corvic are mixed and merge, mix under 180-195 ℃, then add titanate coupling agent TMC-TTS, mediate after 10-15 minute, then add other residual components, mix 10-15 minute, granulate and get final product.

Insulating sleeve layer of the present invention has weatherability, cold resistance, the resistance to ag(e)ing of anti-flammability, pull resistance, excellence preferably.

Cable technology parameter of the present invention sees the following form

Sequence number	Project name	Major parameter
			1	Rated voltage V	2000
2	Specification m ㎡	271
			3	Conductor mm	2158/0.40 zinc-plated annealing copper wire
4	Insulating material	The EP rubber composition
			5	Insulation nominal thickness mm	2.8 the thinnest point is not less than 2.42
6	Sheath nominal thickness mm	1.7 the thinnest point is not less than 1.35
			7	The finished product external diameter, mm	33.6~36.0
8	20 ℃ of D.C. resistances ,≤Ω/km	0.07241
			9	Insulation resistance in the time of 20 ℃/M Ω km is not less than	200
10	Insulation resistance during the nominal operation temperature/M Ω km is not less than	0.20
			11	Cable continuous duty ampacity (A)	704
12	Under the specified running status of cable, working temperature, ℃	-45~+90
			13	AC voltage test, Kv/5min does not puncture (immersion)	7

The present invention is technological requirement in the course of processing:

1. cable operative norm

The cable operative norm is: GB/T5013-2008

2. cable is used guide rule

It is 2000V that cable exchanges rated operational voltage U0;

Cable conductor allows 90 ℃ of working temperatures for a long time, and during short circuit (maximum length in time is no more than 5s), maximum temperature is no more than 250 ℃.

The bending radius of cable: minimum mobile bending radius is cable size 6 times.

Minimum stationary curved radius is cable size 4 times.

3. conductor

Conductor should meet the requirement of the 5th kind of zinc-plated annealed copper conductor regulation of GB/T3956 regulation, and D.C. resistance during 20 ℃ of conductors should meet the requirement of following table regulation, and the conductor twisting pitch will be controlled in 12 times, the synnema opposite direction of adjacent layer.

Conductive surface should be bright and clean, without the burr of greasy dirt, not damaged insulation, and the single line of projection or fracture.

4. separator

Can coat the separator that one deck is made by suitable material every conductor outside.

5. insulation

Adopt the import ethylene-propylene diene copolymer, the company's of employing sulphur line is produced, and nominal thickness and the thinnest point require to meet the following table requirement; Surface is bright and clean, and cross section is without macroscopic pore.

6 sheaths

Adopt import neoprene mixture, the company's of employing sulphur line is produced, smooth surface, outward appearance rounding.

7. finished cable

The physical dimension of finished cable should meet the regulation of following table, and during 20 ℃ of finished cables, DC conductor resistance should meet the regulation of following table, and finished cable should be able to stand the ac rated voltage 7000V of regulation, requires withstand voltage 5 minutes and does not puncture.

Claims (4)

1. a driving and crane electrical connection flexible cable, it is characterized in that: some copper core conductors that comprise the stranded bunchy of tinned copper wire, some copper core conductors all are coated with the aluminium foil separator that thickness is not more than 0.25mm outward, some copper core conductor extrusion moulding that coat the aluminium foil separator form cable core in the carrier layer of silicon rubber extrusion moulding, cable core is coated with the ethylene propylene diene rubber insulating barrier, and the ethylene propylene diene rubber insulating barrier is provided with foamed plastic layer, chloroprene rubber sheath layer outward successively.

2. flexible cable is used in driving according to claim 1 and crane electrical connection, and it is characterized in that: the nominal thickness of the ethylene propylene diene rubber insulating barrier of described cable is 2.8mm, and the thinnest point is not less than 2.42 mm.

3. flexible cable is used in driving according to claim 1 and crane electrical connection, and it is characterized in that: the nominal thickness of the chloroprene rubber sheath layer of described cable is 1.7mm, and the thinnest point is not less than 1.35 mm.

4. flexible cable is used in driving according to claim 1 and crane electrical connection, it is characterized in that described chloroprene rubber sheath layer is coated with the insulating sleeve layer, and described insulating sleeve layer material is made by the raw material of following weight portion:

SG-5 Corvic 100-120, nylon PA6 18-22, calcium carbonate 24-28, aluminium hydroxide 3-4, antimonous oxide 4-5, nano diatomite 12-14, lead stearate 2-3, chlorinated paraffin wax 8-10, zinc 2-3, titanate coupling agent TMC-TTS 1-2, talcum powder 21-24, dibutyl phthalate 2-3, compounded mix 4-5: described compounded mix is made by the raw material of following weight portion: clay 10-12, schmigel 3-4, aluminium nitride 5-6, celestine 1-2, the N-2-(aminoethyl)-3-aminopropyl trimethoxysilane 2-3, crosslinking agent TAC1-2, alum 8-10, zinc stearate 2-3, carborundum 1-2, ferrocene 2-3, the preparation method calcines clay, celestine 4-5 hour under 500-550 ℃, then, take out, add in suitable quantity of water and grind in the lump with alum, adding 10-15% hydrochloric acid solution tune PH is 4.-5.5, and ground slurry is to the 400-500 order, the repeated hydrogenation sodium oxide molybdena is adjusted to neutrality, filter washing, spray drying, obtain powder, the gained powder is mixed with other residual components, and ground and mixed evenly and get final product,

Described preparation method mixes nylon PA6, dibutyl phthalate, is heated to 220-230 ℃, then adds nano diatomite, lead stearate, chlorinated paraffin wax, aluminium hydroxide to stir kneading evenly; SG-5 Corvic, aluminium hydroxide, antimonous oxide are mixed simultaneously, be heated to 175-190 ℃, mixing kneading is even; Aforementioned nylon PA6 compound, SG-5 Corvic are mixed and merge, mix under 180-195 ℃, then add titanate coupling agent TMC-TTS, mediate after 10-15 minute, then add other residual components, mix 10-15 minute, granulate and get final product.

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