Multicore rubber jacketed flexible cable for movement

Abstract

The invention discloses a multicore rubber jacketed flexible cable for movement. The cable comprises a cable core, wherein a belting layer is wrapped outside the cable core in a surrounding manner; an internal sheath is wrapped outside the belting layer in an extrusion manner; a braid layer is weaved outside the internal sheath; an external sheath is wrapped outside the outermost layer in an extrusion manner; the cable core is formed by twisting a hollow-core tube in the center of the cable core and multiple insulating cable cores wrapped around the hollow-core tube in an extrusion manner; the hollow-core tube adopts a tubular TPE insulating and aramid fiber yarn straight pulling structure. According to the invention, the center of the cable adopts aramid fiber yarn straight pulling PTE insulating hollow-core tube to enable the cable to be suitable for the service environment with higher requirements, so that the tensile strength, the compression resistance, the torsion resistance and other mechanical stress of the cable can be effectively improved, and the multicore rubber jacketed flexible cable is suitable for frequent movement in the wild and on a construction site.

Description

[0001] technical field [0002] The invention belongs to the field of pre-branched cables, and in particular relates to a flexible multi-core mobile rubber-sheathed cable. Background technique [0003] Rubber-sheathed cables are widely used in mobile power supplies of various electrical equipment, electric machinery, electrical equipment and appliances, and can be used indoors or outdoors. The product structure is divided into three categories: light, medium and heavy according to the external mechanical force on the cable. Generally, light rubber-sheathed cables are used in household appliances and small electric equipment; medium-sized rubber-sheathed cables are widely used in industrial and agricultural electrification; heavy-duty cables are generally used in port machinery, large hydraulic drainage and irrigation stations and temporary construction on construction sites, etc. Where external mechanical force acts. However, ordinary rubber cables are prone to drumming an...

AI Technical Summary

Problems solved by technology

[0005] During the use of the equipment, due to the long-term frequent bending and movement of the cable or the back-twisting action from the coiled state to the returning state, the conductor and the insulation will become longer; and when the stress is removed, the insulation will restore due to its own springback, and the conductor It will not be restored and form a length difference. Over time, it will cause the conductor to bulge; cause disconnection or breakdown

[0006] 2. Damage and breakdown of the insulation sheath

[0007] Due to the long-term use of the cable in the field or on the construction site, the cable will be affected by external mechanical stress, wind and sun aging, (such as the rolling of the transport vehicle on the construction site, the impact of stones, and a series of external forces) resulting in cable insulation breakdown , the sheath is broken or even the entire cable is scrapped

After the cable moves and bends, the drum will be easy to wear and tear first, etc.

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