CN201270161Y

CN201270161Y - Rubber covered flexible electric cable for coal mining machine

Info

Publication number: CN201270161Y
Application number: CNU2008201607647U
Authority: CN
Inventors: 陆文荣; 李万松; 叶斌
Original assignee: ANHUI HUALING CABLE GROUP Co Ltd
Current assignee: Anhui Lingyu Cable Technology Co Ltd
Priority date: 2008-10-20
Filing date: 2008-10-20
Publication date: 2009-07-08
Anticipated expiration: 2018-10-20

Abstract

A coal mining machine rubber jacketed flexible cable is characterized in that an outer sheath layer is extruded by neoprene rubber materials, a cable core comprises three power cores, three control cores and a ground core, all cores are simultaneously coated in the outer sheath layer, the power cores are strand-twisted and compound-twisted by a plurality of strands of fine tinned wires, and the strand-twisting and compound-twisting directions are identical to form conductors of the power cores, the ground core is also strand-twisted and compound-twisted by a plurality of strands of fine tinned wires, and the strand-twisting and compound-twisting directions are identical to form a conductor of the ground core, the control cores utilize high-strength aramid fiber as anti-drawing wires, conductors of the control cores are formed by using the tinned wires to wind on the peripheries of the anti-drawing wires layer by layer, and the peripheries of the conductors of the control core extrude a poly perfluoro propylene insulating layer to form a control wire. The cable is fine in flexibility, the control cores are not easy to break, and the coal mining machine rubber jacketed flexible cable has advantages of flame retardant, oil resistance, high temperature resistance, wear resistance, excellent bending property and the like, thereby particularly suiting underground coal mining machines.

Description

The coal-winning machine rubber sleeve flexible cable

Technical field

The utility model relates to cable, a kind of high-performance coal-winning machine rubber sleeve flexible cable of more specifically saying so.

Background technology

Coal is one of China's important energy source, strengthens day by day along with China's economic construction constantly develops the electric power requirement, and the coal consumption is increasing.Rich coal resources in China.

At present, the coal mining industry of China has all been used coal-winning machine exploitation.Coal-winning machine needs to move around in the coal mining process, is to connect with long cable between coal-winning machine and the electrical power control cabinet at a distance, includes power core and control core in the electric cable for coal mining machine, and the control heart yearn is thinner.When coal-winning machine reaches foremost, need retreat and move to left, in this process, cable will form the serious bending of the figure of eight or serpentine and dilatory.The inner ring core of bending cable is subjected to very big pressure; the outer ring core is subjected to very big pulling force; and in when coal-winning machine is walked; cable is formed longitudinal pulling force again; this makes that more carefully controlling core is easy to broken string; therefore on the one hand require the coal-winning machine system should possess defencive function to the cable bending; but coal-winning machine is difficult to accomplish in the harsh conditions of down-hole; must consider that on the other hand cable itself should have certain counter-bending ability; i.e. crooked certain certain radius of cable at a certain temperature; several thousand times even up to ten thousand times continuously; cable still can keep normal operation; cable conductor particularly control line core conductor does not break; insulation and sheath material do not ftracture yet, and still, also do not have a kind of coal-winning machine private cable with excellent bending resistance up to now.

The utility model content

The utility model is for avoiding above-mentioned existing in prior technology weak point, provide a kind of soft degree good, the control core is difficult for fracture, not only have fire-retardant, oil resistant, characteristic such as high temperature resistant, wear-resisting adapting to different operational environments, and possess the coal-winning machine rubber sleeve flexible cable of excellent bending property.

The utility model technical solution problem adopts following technical scheme:

The design feature of the utility model coal-winning machine rubber sleeve flexible cable is:

A, external sheath layer be with fire-retardant, oil resistant, high temperature resistant, wear-resisting and waterproof chloroprene rubber material extrude formation;

B, cable core comprise three power cores, three control cores and a ground core, and each core is coated in the external sheath layer jointly;

C, described power core are with the thin tinned wird thigh of multiply strand and multiple strand, and burst strand and twist the identical formation power line of direction core conductor again, and the periphery of power line core conductor is to form power line core insulation layer with the natural gum material;

D, described ground core are with the thin tinned wird thigh of multiply strand and multiple strand, and burst strand and twist the identical formation ground wire of direction core conductor again;

E, described control core are that to spin the synthetic fibre silk fiber with high strength be the tension silk, periphery at described tension silk, twine formation control line core conductor with the tin annealed copper wire layering, the periphery of control line core conductor extrudes the perfluoroethylene-propylene insulating barrier and constitutes control line, three control lines are stranded to be a unit, and forms coating layer jointly.

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

1, the cable jacket layer in the utility model be fire-retardant, oil resistant, high temperature resistant, wear-resisting and waterproof chloroprene rubber material extrude moulding, especially adapt to the various operational environments in down-hole, particularly as the private cable of coal-winning machine.

2, the utility model control line core conductor has adopted high strength to spin the synthetic fibre silk fiber and has made the tension silk, and its tensile strength is the twice of steel wire, is ten times of copper wire; Its percentage elongation only is 3～4%, and is high temperature resistant.Adopt the tin annealed copper wire layering to be wrapped in to spin on the synthetic fibre silk fiber version envoy apart from very little, its length of conductor monofilament expansion back is 1.3 times of raw footage, cable is when crooked and dilatory, conductor is just as a spring, most active force all concentrates on and spins on the synthetic fibre silk fiber material, breaks thereby avoided the control line core conductor to be broken and bend effectively.

3, the control core in the utility model itself has certain tension effect on the one hand, on the other hand in the BENDING PROCESS of cable, the perfluoroethylene-propylene insulation of control core and coating layer have increased the relative slipping property between cable conductor and the external sheath layer, reduced the frictional force between cable conductor and the external sheath layer, reduced wear.

4, the utility model is to be material with fire-retardant, oil resistant, mixing rubber high temperature resistant, wear-resisting, that waterproof is chloride as the external sheath layer of outer protection, has improved cable greatly and has moved useful life in the down-hole, and cable can all around move freely with coal-winning machine.

5, the utility model is mainly used in coal-winning machine, and cable can move freely, and cable can move freely with coal-winning machine, and bring up to original more than 10 times the useful life of control core.

Description of drawings

Fig. 1 is the utility model structural representation.

Fig. 2 is another execution mode structural representation of the utility model.

Number in the figure: 1 power line core conductor, 2 ground wire core conductors, 3 tension silks, 4 control line core conductors, 5 perfluoroethylene-propylene insulating barriers, 6 power line core insulation layers, 7 power core screens, 8 external sheath layers.

Below pass through embodiment, and in conjunction with the accompanying drawings utility model is described further.

Embodiment

Referring to Fig. 1, in the present embodiment, external sheath layer 8 be with fire-retardant, oil resistant, high temperature resistant, wear-resisting and waterproof chloroprene rubber material extrude formation; Cable core comprises three power cores, three control cores and a ground core 2, and each core is coated in the external sheath layer 8 jointly;

Shown in Figure 1, the power core is with the thin tinned wird thigh of multiply strand and multiple strand, and burst strand and twist the identical formation power line of direction core conductor 1 again, and the periphery of power line core conductor 1 is to form power line core insulation layer 6 with the natural gum material.

The ground core is with the thin tinned wird thigh of multiply strand and multiple strand, and burst strand and twist the identical formation ground wire of direction core conductor 2 again; The periphery of ground wire core conductor 2 can extrude semiconductive material or not extrude semiconductive material and form the ground core.

The control core is that to spin the synthetic fibre silk fiber with high strength be tension silk 3, periphery at tension silk 3, twine formation control line core conductor 4 with the tin annealed copper wire layering, the periphery of control line core conductor 4 extrudes perfluoroethylene-propylene insulating barrier 5 and constitutes control line, three control lines are stranded to be a unit, and forms coating layer jointly;

Structure shown in Figure 1 is the coal-winning machine rubber sleeve flexible cable construction of cable, power core screen need be set on the top layer of power core, and this non-shield type cable adapts to general occasion to be used.

Structure shown in Figure 2 is for being the coal-winning machine shielding rubber sleeve flexible cable and the coal-winning machine metallic shield rubber sleeve flexible cable type construction of cable, in this version, on the top layer of each root power core power core screen 7 is set, in coal-winning machine shielding rubber sleeve flexible cable, power core screen 7 adopts semiconductive material; In coal-winning machine metallic shield rubber sleeve flexible cable MCPT, power core screen 7 adopts the tinned copper wire woven shield, and this shield type cable adapts to anti-interference, anlistatig occasion to be used.

Claims

1, coal-winning machine rubber sleeve flexible cable is characterized in that:

A, external sheath layer (8) be with fire-retardant, oil resistant, high temperature resistant, wear-resisting and waterproof chloroprene rubber material extrude formation;

B, cable core comprise three power cores, three control cores and a ground core, and each core is coated in the external sheath layer (8) jointly;

C, described power core are with the thin tinned wird thigh of multiply strand and multiple strand, and burst strand and twist the identical formation power line of direction core conductor (1) again, and the periphery of power line core conductor (1) is to form power line core insulation layer (6) with the natural gum material;

D, described ground core are with the thin tinned wird thigh of multiply strand and multiple strand, and burst strand and twist the identical formation ground wire of direction core conductor (2) again;

E, described control core are that to spin the synthetic fibre silk fiber with high strength be tension silk (3), periphery at described tension silk (3), twine formation control line core conductor (4) with the tin annealed copper wire layering, the periphery of control line core conductor (4) extrudes perfluoroethylene-propylene insulating barrier (5) and constitutes control line, three control lines are stranded to be a unit, and forms coating layer jointly.