CN202102783U - Sheath structure special for winding type cables - Google Patents

Abstract

The utility model discloses a sheath structure special for winding type cables, which is arranged outside a cable core of a cable and comprises an extruded inner protective layer, a weave reinforcing layer and an extruded outer protective layer are arranged outside the extruded inner protective layer which is adhered with the cable core and used for filling gaps of the cable core, and an extruded middle protective layer is arranged between the weave reinforcing layer and the extruded outer protective layer. By means of the three extruded layers and the weave reinforcing layer, materials with different mechanical properties can be adopted according to levels of bearing pressure, tension force and internal stress of each protective layer, and thereby service lives of the winding type cables can be effectively prolonged, and production cost of the cable sheath is reduced.

Description

A special sheath structure for coiled cables

technical field

The utility model relates to a cable sheath structure, in particular to a sheath structure specially used for winding cables.

Background technique

Existing coiled cables generally use two extruded sheathing layers with a braided reinforcing layer in the middle. The function of the extruded inner sheath is to fill the gap of the cable core and adhere to the insulated core, so that it does not move when the cable is wound and retracted; the function of the braided reinforcement layer is to bear the axial tension of the cable; the extruded outer sheath The layer mainly bears the friction force between the cables and between the cable and the pan, as well as the pulling force generated inside the outer sheath when the cable is bent. However, this structure does not take into account the distribution of pressure, tension and internal stress inside the sheath when the cable is wound and retracted, does not consider the different protective effects of each sheath layer on the cable, and does not consider the performance of the materials of each layer. Make a distinction.

Utility model content

The purpose of the utility model is to provide a special sheath structure for winding cables that can effectively improve the service life of winding cables and reduce the production cost of the cable sheaths.

The special sheath structure for coiled cables described in the utility model, the sheath is arranged outside the cable core of the cable, which includes an extruded inner sheath that fills the gap between the cable cores and adheres to the cable core. A braided reinforcement layer and an extruded outer sheath are arranged outside the sheath, and an extruded middle sheath is arranged between the braided reinforcement layer and the extruded outer sheath.

The cable core is formed by twisting several wire cores, and the wire core is composed of a conductor and an insulating layer covering the conductor.

The utility model adopts the structure of three layers of extruded cladding and one layer of braided reinforcing layer, and according to the pressure, tension and internal stress of each sheathing layer, materials with different mechanical properties can be used, thereby effectively improving the use of winding cables Life, reduce the production cost of the cable sheath.

Description of drawings

Fig. 1 is a schematic cross-sectional view of the utility model.

Detailed ways

The special sheath structure for winding cables of the utility model can be used for winding cables such as reel cables, reel cables, cage cables, gantry crane cables, and material conveyor belt cables. Its structure is shown in Figure 1, the sheath is arranged outside the cable core of the cable, the cable core is formed by twisting several wire cores, and the wire core is composed of a conductor 5 and an insulating layer 6 covering the conductor 5. Outside the cable core, there is an extruded inner sheath 4 that fills the gap between the cable cores and adheres to the cable core. Outside the extruded inner sheath 4, there are sequentially provided a braided reinforcement layer 3, an extruded middle sheath 2, and an extruded outer sheath. Outer sheath 1.

The function of the extruded inner sheath 4 is to fill the gap between the cable cores and adhere to the insulated cores so as not to move when the cables are wound and retracted. The inner sheath requires good adhesion to the outermost layer of the adjacent insulated core, but does not require too good mechanical properties.

The function of the braided reinforcing layer 3 is to bear the axial tension of the cable, so a high tensile strength is required.

The extruded sheath 2 mainly bears the internal stress and pressure generated when the cable is bent, and has large dimensional changes, so it is required to have high mechanical tensile strength and good resilience performance.

The extruded outer sheath 1 mainly bears the friction between the cables and between the cable and the pan, as well as the tension and stress generated inside the outer sheath when the cable is bent, and has a large dimensional change, so it is required to have good resistance Abrasion performance, high tensile strength, and good resilience performance.

The utility model changes the structure of the traditional cable, that is, an extruded middle sheath is added between the braided reinforcement layer and the extruded outer sheath, and the middle sheath mainly bears the internal stress and pressure generated when the cable is bent, and has Larger dimensional changes require high mechanical tensile strength and good resilience. In this way, the problem of the distribution of pressure, tension and internal stress inside the sheath when the cable is wound and retracted in the existing winding type cable is solved, and the different protective effects of each sheath layer on the cable are improved.

The above-mentioned embodiments are only used to illustrate the utility model, but do not limit the scope of the utility model. After reading the utility model, those skilled in the art will fall within the scope of the present application to the modifications of various equivalent forms of the utility model. The scope defined by the appended claims.

Claims (2)

1. special-purpose jacket structure of type cable of reeling; This sheath is arranged on outside the cable core of cable; It comprises fills the cable core gap and extrudes sheath (4) with cable core is sticked together; Outside extruding sheath (4), be provided with braiding reinforced layer (3) and extrude outer jacket (1), it is characterized in that at braiding reinforced layer (3) and extrude to be provided with between the outer jacket (1) extruding middle sheath (2).

2. the special-purpose jacket structure of coiling according to claim 1 type cable is characterized in that said cable core forms by some cores are stranded, and core is by conductor (5) and be coated on the outer insulating barrier (6) of this conductor (5) and form.

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