CN217035197U - Concentrated twisting bow type back-twist cable - Google Patents

Abstract

The application discloses concentrate transposition bow formula and move back and turn round stranding, it includes many twines wire together, many the outside of wire is jointly by a protective sheath parcel, many be provided with the reinforcing rope between the wire, many the wire centers on reinforcing rope spiral winding, be provided with the antifriction piece on the reinforcing rope. This application has the effect that improves cable bending resistance nature, and is difficult for making cable weight too big.

Description

Concentrated twisting bow type back-twist cable

Technical Field

The utility model relates to the field of cables, in particular to a concentrated twisting bow type untwisting cable.

Background

A cable belongs to an electric device capable of transmitting both electric power and signals, and is generally composed of a plurality of insulated wires.

Chinese patent with application number CN202020801130.6 among the correlation technique provides an anti cable of buckling, including cable sandwich layer and with the cable core layer with the axle center and be located outermost outer jacket layer, just cable core layer inside has a plurality of wires, nested elastic bending resistance folded layer between cable core layer and the outer jacket layer, bending resistance folded layer includes along the anti node of buckling that cable length direction interval set up and locates the connecting rod between the anti node of buckling, bending resistance node includes the supporting seat with the cyclic annular base of outer jacket layer contact, a plurality of gomphosis cable core layer surface and locates the pillar between base and the supporting seat, pillar and supporting seat have certain elasticity and form the deformation space that is used for holding cable sandwich layer between two pillars, be connected with between the base the connecting rod.

In view of the above-mentioned related art, the inventors found that the following drawbacks exist: although the kink resistant layer increases kink resistance of the cable, the annular base, the support post, etc. also increase the weight of the cable, which makes the cable inconvenient to transport.

SUMMERY OF THE UTILITY MODEL

In order to improve because of improving the anti bending performance of cable, cause the problem of cable weight overweight and inconvenient transportation, this application provides a concentrate transposition bow formula and move back and twist into cable.

The application provides a concentrate and strand bow formula back twist stranding and adopt following technical scheme:

the utility model provides a concentrate transposition bow formula and move back and turn round stranding, includes many twines wire together, many the outside of wire is jointly by a protective sheath parcel, many be provided with between the wire and strengthen the rope, many the wire centers on strengthen rope spiral winding, strengthen being provided with the antifriction piece on the rope.

By adopting the technical scheme, the plurality of wires are twisted together, so that the overall diameter of the cable is increased, the cable is more flexible, and the cable is not easy to break when being bent; the plurality of wires are wound around the reinforcing ropes, so that the whole mechanical property of the cable is improved by the reinforcing ropes, when the cable is bent, a certain tensile force can be borne in the axial direction, and the tensile capacity and flexibility of the cable can be improved by the reinforcing ropes, so that the cable is not easy to break when bent; when the cable takes place to buckle, antifriction piece plays lubricated effect of antifriction to the wire to reduce the inside loss of cable, improve the life of cable, this structure not only can improve the anti performance of buckling of cable, has reduced the use of structures such as pillar, supporting seat, thereby is difficult for making the weight of cable too big.

Optionally, the number of the friction reducing members is multiple, and the friction reducing members are arranged at equal intervals along the length direction of the cable.

Through adopting above-mentioned technical scheme, the inside equipartition of cable has a plurality of antifriction pieces to the antifriction lubrication to whole cable is compared in setting up a complete antifriction piece in whole cable inside, and the antifriction piece that lays through setting up a plurality of equidistant is favorable to reducing manufacturing cost.

Optionally, the antifriction component comprises a rubber sleeve and talcum powder positioned inside the rubber sleeve, and the rubber sleeve is provided with a round hole.

Through adopting above-mentioned technical scheme, the talcum powder is filled in the rubber sleeve, can produce certain extrusion force to the rubber sleeve when the cable is buckled, and the talcum powder can spill in following the round hole this moment, and the talcum powder produces lubricated effect to the cable.

Optionally, the rubber sleeve includes an inner sleeve and an outer sleeve, the inner sleeve is sleeved on the reinforcing rope, the outer sleeve is located outside the inner sleeve, the talcum powder is filled in the outer sleeve, and the circular hole is formed in the outer sleeve.

By adopting the technical scheme, the outer sleeve is specially used for filling the talcum powder, the inner sleeve is specially used for sleeving the reinforcing rope, the inner sleeve is sleeved on the reinforcing rope, the operation mode is simple, pressure can be generated on the outer sleeve when the cable is bent, and the talcum powder is extruded from the outer sleeve to lubricate the cable.

Optionally, a buffer layer is filled between the protective sheath and the lead.

Through adopting above-mentioned technical scheme, when the cable takes place to buckle, the wire can produce the extrusion to the buffer layer, and the buffer layer plays buffer protection's effect to the cable for the cable is difficult for taking place excessively to buckle at the in-process of buckling, thereby causes the fracture of cable.

Optionally, the buffer layer is a natural rubber layer.

Through adopting above-mentioned technical scheme, the natural rubber source is extensive, acquires the facility, and the natural rubber layer makes the cable resume to normal condition from the state of buckling, reduces the cable and receives the damage.

Optionally, the protective sleeve is a crosslinked polyethylene layer.

By adopting the technical scheme, the crosslinked polyethylene layer has the characteristics of light weight, good heat resistance, strong load capacity, chemical corrosion resistance, high mechanical strength and the like.

Optionally, the outer layer of the protective sleeve is wrapped with a PVC sheath.

Through adopting above-mentioned technical scheme, the outmost one deck PVC sheath that sets up of cable, the PVC sheath has fire-retardant effect, has the guard action to the cable.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the plurality of wires are wound on the reinforcing ropes, so that the tensile capacity of the cable is improved, and meanwhile, the reinforcing ropes are beneficial to the whole cable to be flexible, so that the cable is not easy to break in the bending process; the antifriction piece plays a role in antifriction and lubrication of the cable, plays a role in protecting the cable, and prolongs the service life of the cable;

2. when the cable is bent, the outer sleeve is extruded, so that the talcum powder in the cable is extruded, and the purpose of lubrication and friction reduction is achieved;

3. through set up the buffer layer between wire and protective sheath for the cable is when buckling, reduces the damage that the cable received.

Drawings

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

Fig. 2 is a schematic view of a reinforcing cord construction.

Fig. 3 is a schematic view of the rubber sleeve structure.

Reference numerals: 1. a wire; 2. a protective sleeve; 3. a reinforcing cord; 4. a rubber sleeve; 41. an inner sleeve; 42. a jacket; 421. a circular hole; 5. a buffer layer; 6. a PVC sheath.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses a concentrated twisting bow type back-twist cable. Referring to fig. 1, the concentrated twisting bow-type untwisting cable comprises a plurality of wires 1 which are wound together, the plurality of wires 1 are wrapped by a protective sleeve 2, the protective sleeve 2 protects the wires 1, meanwhile, the plurality of wires 1 are gathered together, the protective sleeve 2 is a cross-linked polyethylene layer, and the cross-linked polyethylene layer has the characteristics of light weight, good heat resistance, strong load capacity, chemical corrosion resistance, high mechanical strength and the like; the outside parcel of protective sheath 2 has one deck PVC sheath 6, and PVC sheath 6 has the fire resistance, has the effect of fire protection to the cable.

Each wire 1 is formed by twisting a plurality of copper wires, and the outside of the copper wires is coated with a layer of plastic insulating sleeve.

Be provided with one between many wires 1 and strengthen rope 3, the week side at 3 of reinforcing rope is strengthened to 1 spiral winding of many wires, adopts spiral winding's mode to have following benefit: on one hand, the diameter of the wound cable is increased, compared with a cable made of a copper wire with the same diameter, the overall cable is more flexible due to the winding mode of the multi-wire 1, and the cable is not easy to break when the cable is bent; on the other hand, through setting up the compliance that reinforcing rope 3 can increase the cable, when the cable takes place to buckle, can bear the pulling force on the length direction of cable, be favorable to strengthening the tensile ability of cable through setting up reinforcing rope 3 to make the cable be difficult to more take place to damage when buckling, thereby prolong the life of cable.

As shown in fig. 2 and 3, the reinforcing rope 3 is a hemp rope, and the reinforcing rope 3 is provided with an antifriction component which has an antifriction and lubricating effect on the lead 1 when the cable is bent, so that the loss in the cable is reduced, and the service life of the cable is prolonged; the quantity of antifriction piece is a plurality of, and a plurality of antifriction pieces are laid along the length direction of cable equidistant, has a plurality of antifriction pieces through the inside equipartition at the cable to the realization is compared in setting up a complete antifriction piece in cable inside to the antifriction lubrication of whole cable, and the antifriction piece of laying through setting up a plurality of equidistant is favorable to reducing manufacturing cost.

The antifriction piece includes rubber sleeve 4 and talcum powder, and the whole outward appearance of rubber sleeve 4 presents cylindricly, including endotheca 41 and overcoat 42, endotheca 41 and the integrative setting of overcoat 42, and overcoat 42 is located the outside of endotheca 41, and endotheca 41 cover is established on strengthening rope 3, because endotheca 41 and the connected mode that strengthens rope 3 adoption cup jointed for the installation is comparatively convenient.

The talcum powder loads in overcoat 42, has seted up round hole 421 on the overcoat 42, and when 1 spiral winding of many wires was on strengthening rope 3, wire 1 can contact with overcoat 42, and when the cable took place to buckle, overcoat 42 can receive the extrusion, and the talcum powder can be extruded from overcoat 42 this moment, and the talcum powder plays the lubricated effect of antifriction for the cable is at the in-process of buckling, reduces the cable and takes place internal loss, thereby does benefit to the life-span of extension cable.

As shown in fig. 1, the gap between the wire 1 and the protective sleeve 2 is filled with the buffer layer 5, the buffer layer 5 is a natural rubber layer in the embodiment, the natural rubber has a wide source, and is convenient to obtain, when the cable is bent, the wire 1 can extrude the natural rubber layer, and the natural rubber layer plays a role in buffer protection for the cable, so that the cable is not easy to excessively bend in the bending process, the cable can be recovered to a normal state from the bending state, and the cable is damaged.

The implementation principle of the concentrated twisting bow back-twist cable in the embodiment of the application is as follows: the winding mode of the plurality of wires 1 is beneficial to making the whole cable more flexible, so that the cable is not easy to break when being bent; when the cable is bent, the outer sleeve 42 is extruded, and the talcum powder is extruded from the outer sleeve 42 and is beneficial to friction reduction and lubrication; because be provided with buffer layer 5 between wire 1 and the protective sheath 2, when the cable takes place to buckle, wire 1 produces the extrusion to buffer layer 5, and buffer layer 5 plays buffer protection's effect to whole cable for the difficult excessive buckle that takes place of cable.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. The utility model provides a concentrated transposition bow formula is moved back and is turned round stranding, includes many twines wire (1) together, many the outside of wire (1) is wrapped up by a protective sheath (2) jointly, its characterized in that: many be provided with between wire (1) and strengthen rope (3), many wire (1) centers on strengthen rope (3) spiral winding, be provided with antifriction spare on strengthening rope (3).

2. The concentrated lay bow-back cabling according to claim 1, wherein: the antifriction piece is a plurality of, and a plurality of antifriction piece is laid along cable length direction equidistance.

3. The concentrated lay bow untwisted cable of claim 2, wherein: the antifriction component comprises a rubber sleeve (4) and talcum powder positioned inside the rubber sleeve (4), and a round hole (421) is formed in the rubber sleeve (4).

4. The concentrated lay bow untwisted cable of claim 3, wherein: the rubber sleeve (4) comprises an inner sleeve (41) and an outer sleeve (42), the inner sleeve (41) is sleeved on the reinforcing rope (3), the outer sleeve (42) is located outside the inner sleeve (41), talcum powder is filled in the outer sleeve (42), and a round hole (421) is formed in the outer sleeve (42).

5. The concentrated lay bow untwisted cable of claim 1, wherein: a buffer layer (5) is filled between the protective sleeve (2) and the lead (1).

6. The concentrated lay bow-back cabling according to claim 5, wherein: the buffer layer (5) is a natural rubber layer.

7. The concentrated lay bow untwisted cable of claim 1, wherein: the protective sleeve (2) is a cross-linked polyethylene layer.

8. The concentrated lay bow-back cabling according to claim 1, wherein: the outer layer of the protective sleeve (2) is wrapped with a PVC sheath (6).

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