CN105673669A - Stay rope - Google Patents

Abstract

The invention discloses a stay rope. The stay rope comprises a body core steel wire. An inner steel wire sleeve is arranged outside the body core steel wire. An outer steel wire sleeve is arranged outside the inner steel wire sleeve. A flat wire jacket layer is arranged outside the outer steel wire sleeve. The body steel wire is a round wire. The inner steel wire sleeve and the outer steel wire sleeve are each formed by stranding a plurality of round wires. The flat wire jacket layer is spirally wound on the outer steel wire sleeve and wrapped with a lateral steel wire bushing. A propene polymer (PP) coating is arranged outside the steel wire bushing. A steel belt lock cylinder is designed to be of the four-layer structure comprising the body core steel wire, the inner steel wire sleeve, the outer steel wire sleeve and the flat wire jacket layer, so that the strength of the steel belt lock cylinder is improved, and the service life is prolonged.

Description

Drag-line

Technical field

The present invention relates to a kind of drag-line.

Background technology

The sleeve pipe of current drag-line is generally plastic bushing or metal spring sleeve pipe, due to plastic bushing owing to intensity own is low, in addition plastic expansion coefficient is higher, variation of ambient temperature adaptability is poor, and it is easily aging, easy creeping deformation, it is big to there is resistance in metal spring sleeve pipe, the defect such as perishable, therefore cable sleeve is progressively replaced by multiple tube, and lock core structure is simple, is generally steel wire or the steel wire rope by steel wire strand sth. made by twisting stock is constituted, thus its tensile strength is poor, service life is not long.

Summary of the invention

It is an object of the invention to overcome the defect existed in prior art, it is provided that a kind of drag-line, intensity is high, and service life is longer.

For achieving the above object, the technical scheme is that and provide a kind of drag-line, including a main core wire, main core wire outer layer is provided with steel wire of internal layer set, steel wire of internal layer set outer layer is provided with cover wire set, cover wire set outer layer is provided with flat filament jacket layer, main core wire is circle silk, steel wire of internal layer set and cover wire set are many round silks sth. made by twisting stocks and form, flat filament jacket layer is helically wound around cover wire and puts, described flat filament jacket layer is wrapped with side steel wire casing, and described steel wire casing is outside equipped with PP coat.

Advantages of the present invention with have the beneficial effects that: by steel band cylinder design being become main core wire, steel wire of internal layer set, cover wire set and the four-layer structure of flat filament jacket layer, improving its intensity, increasing the service life.

Accompanying drawing explanation

Fig. 1 is the schematic diagram of the present invention.

In figure: 1, main core wire; 2, steel wire of internal layer set; 3, cover wire set; 4, flat filament jacket layer; 5, steel wire casing; 6, PP coat.

Detailed description of the invention

Below in conjunction with drawings and Examples, the specific embodiment of the present invention is further described. Following example are only for clearly illustrating technical scheme, and can not limit the scope of the invention with this.

As shown in Figure 1, a kind of drag-line, including a main core wire 1, main core wire 1 outer layer is provided with steel wire of internal layer set 2, steel wire of internal layer overlaps 2 outer layers and is provided with cover wire set 3, cover wire overlaps 3 outer layers and is provided with flat filament jacket layer 4, main core wire 1 is circle silk, steel wire of internal layer set 2 and cover wire set 3 are many round silks sth. made by twisting stocks and form, flat filament jacket layer 4 is helically wound around on cover wire set 3, described flat filament jacket layer 4 is wrapped with side steel wire casing 5, and described steel wire casing 5 is outside equipped with PP coat 6.

The above is only the preferred embodiment of the present invention; it should be pointed out that, for those skilled in the art, under the premise without departing from the technology of the present invention principle; can also making some improvements and modifications, these improvements and modifications also should be regarded as protection scope of the present invention.

Claims (1)

1. a drag-line, it is characterized in that: include a main core wire, main core wire outer layer is provided with steel wire of internal layer set, steel wire of internal layer set outer layer is provided with cover wire set, and cover wire set outer layer is provided with flat filament jacket layer, and main core wire is circle silk, steel wire of internal layer set and cover wire set are many round silks sth. made by twisting stocks and form, flat filament jacket layer is helically wound around cover wire and puts, and described flat filament jacket layer is wrapped with side steel wire casing, and described steel wire casing is outside equipped with PP coat.