CN201749702U

CN201749702U - Rubber sleeve cable

Info

Publication number: CN201749702U
Application number: CN2010202430711U
Authority: CN
Inventors: 庄新华; 杨凤霞; 潘良财
Original assignee: JIANGSU ZHUYING SPECIAL CABLE CO Ltd
Current assignee: JIANGSU ZHUYING SPECIAL CABLE CO Ltd
Priority date: 2010-06-29
Filing date: 2010-06-29
Publication date: 2011-02-16
Anticipated expiration: 2020-06-29

Abstract

The utility model discloses a rubber sleeve cable, which comprises a plurality of wire cores, and a belting for fastening the wire cores; a rubber filling is arranged between the wire cores and the belting; an outer sheath is arranged outside the belting; and each wire core comprises an inner conductor and an insulation layer coated on the outer surface of the inner conductor. The utility model has the advantages that firstly, thin stone dead wires are placed in the center of the conductor, so that the conductor is prevented from being lengthened in the bending process, an insulation wire can not be bloated, and the conductor can not be fractured primarily to prolong the service life; secondly, the outside diameter of a null line is in the same size as that of a main line, so that the null line is prevented from being lengthened in the bending and back twisting processes, and the wire core of the null line is prevented from being fractured primarily; thirdly, the extruded steel wires are placed to be filled in the center during stranding, so as to increase the tensile resistance and bearing capacity of the cable; fourthly, the chloroprene rubber adhesive of the sheath has stronger uvio-resistant, oil-proof and wear resistant properties than those of ordinary rubber; and fifthly, the service life is prolonged, and the cable with the design can be shifted over ten thousand times.

Description

A kind of Plastic-sheathed Cable

Technical field

The utility model relates to a kind of cable, is the Plastic-sheathed Cable that a kind of tower crane is used, vertical lift is used 450/750V specifically.

Background technology

Be applicable to that because of carrying out GB/T5013-2008 standard rubber cable 450/750 reaches following household electrical appliance, electric tool and various mobile electrical devices.And tower crane is mobile more frequent with line, vertical lift line, and instructions for use is higher.Phenomenons such as common rubber cable uses the back to have outer drum, the disconnected core of having protected, and useful life is short influence the normal operation of vertical lifting equipment and have potential safety hazard.The reason that above defective produces is as follows:

Play the drum reason: vertical lifting equipment in use, equipment is operation upwards, cable hangs the below from above because the effect of gravity and cable return the back twist effect of line states by tortuous state shift, conductor and insulation all can be elongated; And after gravity is cancelled when equipment descends, insulate because the rebound effect of self can reduce, and conductor can not reduce and form length difference, in the course of time, causes conductor to bloat.

Disconnected core reason: adopt the 3+1 structure during common rubber cable stranding, because of the zero line external diameter is little, in the stranding process, the centripetal force that each root core produces makes laying up diameter trend towards minimum outer diameter; No matter much each core is, and always on the cylindrical line of cable, the core radius that external diameter is little is elongated for its outer round dot, so reality is longer than master core with line.In crooked back twist process, zero line is elongated, owing to be subjected to the outer extruding of protecting, the unnecessary part that grows is case of bending, seriously exceeds its minimum bending radius, so zero line fracture earlier.

The utility model content

Goal of the invention: the purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of Plastic-sheathed Cable that tower crane is used, vertical lift is used that is adapted at is provided.

Technical scheme: in order to solve the problems of the technologies described above, a kind of Plastic-sheathed Cable described in the utility model, it comprises many cores, tightens the band that many cores are used, and is provided with rubber and fills between core and band, is provided with oversheath in the outside of band; Described core comprises inner wire, is coated on the insulating barrier of inner wire outer surface, is provided with finer wire at the center of described inner wire.

The center of described cable is provided with steel wire rubber and fills, and this steel wire rubber is filled and comprised the steel wire that is located at the center and be extruded in the outer rubber layer of steel wire.

Comprise zero line and main line in the above-mentioned many cores, and the zero line external diameter is identical with the main line external diameter.

Described oversheath is the neoprene oversheath.

Beneficial effect: compared with prior art, the utility model has the advantages that: 1) soft steel wire is put at the conductor center, prevents that conductor is elongated in BENDING PROCESS, can not produce insulated wire cores and bloat, and conductor is fracture therefore and earlier not, increases the service life; 2) the zero line external diameter is the same with the main line external diameter big; Prevent that zero line is elongated in crooked back twist process, prevent the fracture earlier of zero line core; 3) during stranding, fill at the steel wire center of putting after extruding, and increases the stretching resistance and the bearing capacity of this line; 4) and the uvioresistant of sheath neoprene, oil resistant, wear-resisting all rubber than common are strong; 5) increase the service life, this kind design cable moves more than 10,000 times.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Embodiment

The utility model is described in further detail below in conjunction with accompanying drawing.

As shown in Figure 1, a kind of Plastic-sheathed Cable comprises many cores, tightens the band 3 that many cores are used, and is provided with rubber and fills 5 between core and band 3, is provided with neoprene oversheath 4 in the outside of band 3; Wherein core comprises that the center is provided with the inner wire 1 of finer wire 2, is coated on the insulating barrier 7 of inner wire 1 outer surface, is provided with separator between inner wire 1 and insulating barrier 7; Be provided with steel wire rubber at the center of this cable and fill 6, steel wire rubber is filled 6 and is comprised steel wire 61 that is located at the center and the rubber layer 62 that is extruded in outside the steel wire 61.

Core is preferred four in the utility model.During assembling, at first with many steel wires stranded be the inner wire of one structure; Secondly the inner wire bundle is closed; It is stranded again finer wire to be put into conductor center; And then, between inner wire and insulating barrier, drag separator at the outside of inner wire extruded insulation formation core; With many core strandings, put the steel wire rubber at the center of this cable and fill, put the rubber filling all around again; Wrapped then band forms lapping layer; Extrude oversheath at last.

The above only is a preferred implementation of the present utility model.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the utility model principle, can also make some modification and improvement, these also should be considered as belonging to protection range of the present utility model.

Claims

1. a Plastic-sheathed Cable is characterized in that: comprise many cores, tighten the band (3) that many cores are used, be provided with rubber and fill (5) between core and band (3), be provided with oversheath (4) in the outside of band (3); Described core comprises inner wire (1), is coated on the insulating barrier (7) of inner wire (1) outer surface, is provided with finer wire (2) at the center of described inner wire (1).

2. according to the described Plastic-sheathed Cable of claim 1, it is characterized in that: be provided with steel wire rubber at the center of described cable and fill (6).

3. according to the described Plastic-sheathed Cable of claim 2, it is characterized in that: described steel wire rubber is filled (6) and is comprised the steel wire (61) that is located at the center and be extruded in the outer rubber layer (62) of steel wire (61).

4. according to claim 1 or 2 described Plastic-sheathed Cables, it is characterized in that: comprise zero line and main line in the described many cores, and the zero line external diameter is identical with the main line external diameter.