CN207124051U - A kind of tensile cable - Google Patents

Abstract

The utility model discloses a kind of tensile cable.The tensile cable includes more cable cores, by the multi-cable cable core integral coating restrictive coating therein；Every cable core includes tensile elements, more conductors and the insulating barrier being coated on outside the tensile elements and Duo Gen conductors；On the section in cable length direction, more conductors are located at tensile elements surrounding, and the insulating barrier and restrictive coating are in a ring.Cable of the present utility model improves the tension of cable, bending resistance, solve existing cable in driving during use because driving moves back and forth in the process of running, cable constantly waved, folded or stress caused by distort and the problem of the conductor that occurs disconnected core.

Description

A kind of tensile cable

Technical field

A kind of tensile cable is the utility model is related to, belongs to electric wire field, is particularly suitable as cable for travelling crane.

Background technology

With the development of Chinese manufacturing, all kinds of drivings should in the industry such as metallurgy, machinery, electric power, ship and automobile making With more and more extensive, the demand for private cable of driving a vehicle is increased therewith, it is desirable to also improve therewith.

Because driving moves back and forth in the process of running, cable constantly waved, folded or distort.Traditional cable is being transported In capable process, cable for travelling crane is frequently bended, and conductor is easily produced fracture by the effect torsional deformation of stress, so as to influence to drive a vehicle Normal operation, also influence cable service life.

Chinese invention patent application CN201610600350.0 discloses a kind of self-bearing type mine aluminium alloy core cable, its Including conductor, the outside of the conductor is extruded with insulating barrier, forms insulated wire cores, and multiple insulated wire cores array arrangements are multiple exhausted The centre bit of edge core is equipped with strengthening core, and the strengthening core is twisted with insulated wire cores and extrudes packed layer for cable core, the gap of cable core, It is outside to be extruded with outer jacket outside wrapped fire-retardant lapping layer, lapping layer；The insulated wire cores are led by what aluminium alloy monofilament was twisted into Body and be extruded in conductor external insulation layer composition；The molded line that the conductor is twisted by trapezoidal highly conductive aluminium alloy monofilament；Institute The strengthening core stated is made up of a diameter of 2~4mm round steel wire or seven steel strand wires, or extrudes one outside steel wire, steel strand wires Layer butyronitrile elastomeric material.It is this that strengthening core is arranged on the center of cable as tensile elements, it is difficult to conductor to be played preferably Protective value, while the gap of cable core extrudes packed layer, and the bending property for causing cable is difficult to meet that cable for travelling crane is being run During move back and forth, cable constantly waved, folded or distort and constantly core requirement.

Utility model content

The utility model aims to provide a kind of tensile cable, and the cable can lift the tension of cable, bending resistance, especially It is adapted to solution existing cable to move back and forth in the process of running because driving a vehicle during use in driving, cable is constantly shaken Pendulum, fold or distortion caused by stress and the conductor that occurs break core the problem of.

To achieve these goals, technical scheme is used by the utility model：

A kind of tensile cable, including more cable cores, by the multi-cable cable core integral coating restrictive coating therein；It is tied Structure feature is that every cable core includes tensile elements, more conductors and the insulation being coated on outside the tensile elements and Duo Gen conductors Layer；On the section in cable length direction, more conductors are located at tensile elements surrounding, and the insulating barrier and restrictive coating are equal In a ring.

The utility model is started with from conductor structure, and the heart directly adds tensile elements in the conductor, and multi-cable cable core is total to With a restrictive coating.Compared with Chinese patent application CN201610600350.0, while there is drawing-resistant function, lighter in weight, It in turn ensure that pliability i.e. resist bending excellent performance.

According to embodiment of the present utility model, further optimization can also be made to the utility model, below for optimization after The technical scheme of formation：

In order to avoid conductor tension, the more conductor strands are wrapped in the tensile elements surrounding.Thus, it is possible to significantly Improving The Quality of Products.

In order to further improve the tensile property of cable, the tensile elements are made up of aramid fiber beam.

The tensile elements and Duo Gen conductors are coated with separation layer, the separation layer be located at the conductor and insulating barrier it Between.

In order to improve the slip property of product, and then improve the bending property of cable, improve isolation described in life of product Lubricating layer is filled between layer and insulating barrier.The separation layer is polyester belt lapping layer.It is preferred that lubricating layer is commercially available ultra-fine cunning Stone flour, thus, be equipped with one layer of separation layer outside every conductor, the separation layer is coated with insulating barrier, the separation layer with Insulation interlayer is a small amount of superfine talcum powder, and polyester belt lapping layer, insulating barrier are wound with successively from inside to outside in all conductor outer layers, Compared with Chinese patent application CN201610600350.0, the utility model selects the preferable polyester of slipping property in conductor outer layer Band, while a small amount of superfine talcum powder is coated in polyester belt layer surface during extruded insulation, the slip property of product is lifted, is entered And improve the bending property of cable, improve life of product.

The more cable cores are coated with isolation strip, and the isolation strip is between the cable core and restrictive coating.

In order to improve the slip property of product, and then improve the bending property of cable, improve life of product, the isolation strip Lubricating layer is filled between restrictive coating.

In order to ensure the globality of cable, the center of the more cable cores is provided with packed layer.Thus, cable core uses poly- Ester band is wrapped, and the center gap part in polyester belt lapping layer allows to be filled with filler, the separation layer and sheath interlayer For a small amount of superfine talcum powder.

In order to ensure the bending property of product, the stranding lay ratio of the cable is not more than 8.It is possible thereby to extending product makes Use the life-span.

Cable core external coating selects the preferable polyester belt of slipping property, while in polyester belt layer surface during extrude sheath A small amount of superfine talcum powder is coated, improves the slip property of product, and then improves the bending property of cable, improves the product longevity Life.

Design concept of the present utility model is：Cable is because the stress suffered by cable for travelling crane motion process is concentrated mainly on The centre of conductor, by the centrally disposed tensile elements of conductor wire core in cable, remaining strand conductor strand is in tension member Around part, because twisting the presence into coefficient, mainly met with stresses by tensile elements at center, tensile elements select the virtue of high intensity Synthetic fibre fiber, while there is drawing-resistant function, lighter in weight, it in turn ensure that pliability, i.e. resist bending excellent performance.

Accumulated by many years of experience, this kind of cable for travelling crane multicore insulation core wire is twisted lay ratio and is not to be exceeded 8 times, can be true Protect cable softness and service life can be extended.

Cable core center is filled at piece center of filling for the rubber strip that extrudes of high intensity aramid fiber as needed, is ensured Tensile property is improved while cable roundness.

Conductor and cable core cladding high temperature resistant slip separation layer, conductor isolation layer with insulation interlayer and cable core separation layer with A small amount of excess talcum powder is coated between restrictive coating, adds the slipping property of inner space, further increases the anti-of cable entirety Bending property.

Compared with prior art, the beneficial effects of the utility model are：The utility model in conductor by increasing tension Element（High-intensity aramid fiber）, conductor outer cladding polyester separation layer, cable core outer cladding polyester separation layer, coat on all separation layers A small amount of superfine powder, in addition less lay ratio so that there is good slipping property inside cable, product has tensile property and height concurrently Flexibility, it can significantly lift product service life.

Cable of the present utility model overcomes traditional cable for travelling crane in terms of pull resistance and flexibility the defects of, keeps its fortune Capable nimble property, cable weight eliminate the stress influence brought by deadweight increase, while cable almost without significant change Requirement in process of production to equipment is relatively low, substantially increases the realizability of production technology.

Brief description of the drawings

Fig. 1 is the cross-sectional view of the utility model one embodiment.

In figure

1- tensile elements；2- conductors；3- separation layers；4- insulating barriers；5- is filled；6- isolation strip；7- restrictive coatings.

Embodiment

Describe the utility model in detail below with reference to accompanying drawing and in conjunction with the embodiments.It should be noted that do not conflicting In the case of, the feature in embodiment and embodiment in the utility model can be mutually combined.For sake of convenience, hereinafter such as There are " on ", " under ", "left", "right" printed words, only represent that the upper and lower, left and right direction with accompanying drawing in itself is consistent, not to structure Play restriction effect.

A kind of tensile cable, as shown in figure 1, mainly being isolated by tensile elements, conductor, conductor isolation layer, insulating barrier, cable core Band, restrictive coating composition.Conductor 2 uses multiply metal jewelry, expensive clothing and other valuables copper cash, and the maximum gauge of single line meets the 5th in GB/T3956-2008 The regulation of kind flexible conductor；Tensile elements 1 are set in conductor 2, and tensile elements 1 are using the excellent high-intensity aramid fiber of tensile property Bundle strand is formed, and tensile elements 1 are arranged on to the center of conductor 2, centered on tensile elements 1, is twisted multiply jewelry, expensive clothing and other valuables copper cash Form conductor 2；More insulated wire cores need stranding, and the control of stranding lay ratio is no more than 8 times, to ensure the bending property of cable； Using the structure, the tensile property of conductor and the stability of conductor can be greatly improved.

High-intensity aramid fiber in the present embodiment can use height prepared by Chinese invention patent CN201310098558.3 Strong aramid fiber.

Filler 5 can be set in heart position wherein as needed during stranding, and SE3 types rubber shield can be selected in the material of filler 5 The vulcanization rubber strip that jacking extrudes, for ensureing the rounding property of cable, core is filled out in adhesive tape center using aramid fiber when extruding, and adds Strong tensile property.

Conductor isolation layer 3 selects heat-resistant polyester film, is packed using around-packing technology, can be used for preventing because conductor is unstable Caused insulation core shift, and can ensure adhesion between insulation and conductor.

Outside conductor isolation layer 3, insulating barrier 4 is set, insulating barrier 4 is extruded using squash type technique, and insulating materials can be selected EP rubbers, insulation thickness, electric property and physical property should meet the relevant regulations of standard requirement or technological requirement.

Superfine talcum powder is coated between conductor isolation layer 3 and insulating barrier 4, strengthens inner space slipping property.

Heat-resistant polyester film is selected in cable core isolation strip 6, is packed using around-packing technology, can be used for preventing because cable core is unstable Caused sheath core shift, and can ensure adhesion between insulation and sheath, are coated between cable core isolation strip 6 and restrictive coating 7 Superfine talcum powder, strengthen inner space slipping property.

Restrictive coating extrudes to be formed from chloroprene rubber sheathing compound, and jacket thickness, electric property and physical property should meet standard It is required that or technological requirement relevant regulations.

The content that above-described embodiment illustrates should be understood to that these embodiments are only used for being illustrated more clearly that the utility model, Rather than limitation the scope of the utility model, after the utility model has been read, those skilled in the art are new to this practicality The modification of the various equivalent form of values of type each falls within the application appended claims limited range.

Claims (10)

1. a kind of tensile cable, including more cable cores, by the multi-cable cable core integral coating restrictive coating therein（7）；Its It is characterised by, every cable core includes tensile elements（1）, more conductors（2）Be coated on the tensile elements（1）With more conductors （2）Outer insulating barrier（4）；On the section in cable length direction, more conductors（2）Positioned at tensile elements（1）Surrounding, The insulating barrier（4）And restrictive coating（7）In a ring.

2. tensile cable according to claim 1, it is characterised in that the more conductors（2）It is twisted to be wrapped in described resist Draw element（1）Surrounding.

3. tensile cable according to claim 1 or 2, it is characterised in that the tensile elements（1）By aramid fiber beam system Into.

4. tensile cable according to claim 1 or 2, it is characterised in that the tensile elements（1）With more conductors（2） It is coated with separation layer（3）, the separation layer（3）Positioned at the conductor（2）With insulating barrier（4）Between.

5. tensile cable according to claim 4, it is characterised in that the separation layer（3）With insulating barrier（4）Between fill There is lubricating layer.

6. tensile cable according to claim 4, it is characterised in that the separation layer（3）For polyester belt lapping layer.

7. tensile cable according to claim 1 or 2, it is characterised in that the more cable cores are coated with isolation strip （6）, the isolation strip（6）Positioned at the cable core and restrictive coating（7）Between.

8. tensile cable according to claim 7, it is characterised in that the isolation strip（6）With restrictive coating（7）Between fill There is lubricating layer.

9. tensile cable according to claim 1 or 2, it is characterised in that the center of the more cable cores is provided with and filled out Fill layer（5）.

10. tensile cable according to claim 1 or 2, it is characterised in that the stranding lay ratio of the cable is not more than 8.