CN202487215U

CN202487215U - Self-bearing anti-tension flexible cable

Info

Publication number: CN202487215U
Application number: CN2012200080854U
Authority: CN
Inventors: 邓九旺; 祝永林; 叶明竹; 水利飞; 刘伟
Original assignee: Anhui Huayu Cable Group Co Ltd
Current assignee: Anhui Huayu Cable Group Co Ltd
Priority date: 2012-01-10
Filing date: 2012-01-10
Publication date: 2012-10-10
Anticipated expiration: 2022-01-10

Abstract

The utility model discloses a self-bearing anti-tension flexible cable which comprises three power cores and a ground core. A first insulating layer and an inner reinforcing layer are successively wrapped outside each of the three power cores, and a first insulating layer and an inner reinforcing layer are also successively wrapped outside the ground core. Each inner reinforcing layer is composed of an inner winding layer wound by polyester tapes, a braiding layer braided by aramid fiber, and an outer winding layer wound by polyester tapes. The three power cores wrapped with the reinforcing layers and the ground core wrapped with the reinforcing layer are intertwisted with each other to form a cable core. A ratio of pitch to diameter when the cable core is cabling is not greater than 8. Anti-tension cores wrapped with second insulating layers are arranged respectively in the center and on the outer side of the cable core. The anti-tension cores are formed by conventional high-strength aramid fiber yarn intertwisted with ropes. An inner sheath layer, an outer reinforcing layer and an outer sheath layer are successively wrapped outside the cable core and the anti-tension cores. The anti-tension cores adopted by the cable help to share pulling force that has to be born by cable insulating cores. The combined mode of the inner reinforcing layers enables the cores to be effectively protected from being damaged by fraction among the insulating cores and helps to again share pulling force that has to be born by the insulating cores.

Description

A kind of self-bearing type tension flexible cable

Technical field

The utility model relates to a kind of mobile flexible cable that is used for the vertical run occasion, relates in particular to a kind of self-bearing type tension flexible cable.

Background technology

General Plastic-sheathed Cable after using some months on the equipment such as lift, overhead traveling crane, can twist flexural deformation, bulge, sheath cracking cause cable short partially useful life.Busy lift normal condition following every day is hundreds of up and down, accumulates over a long period, and very big stress can be gathered in cable inside under the effect of twisting resistance, causes the cable excessive fatigue and distortion gradually, even phenomenon such as disconnected core takes place.So general Plastic-sheathed Cable is difficult on the building hoist and uses for a long time.And along with the improving constantly of lift height, also increasingly high to the requirement of the cable supporting with it.

The utility model content

In order to solve the existing easily broken core that is used for vertical run occasion cable, problem such as yielding, according to designing again with the structure of characteristics to cable in fact, the utility model provides a kind of self-bearing type tension flexible cable.

The technical scheme of the utility model is following:

Self-bearing type tension flexible cable; Comprise three power cores and ground connection core; It is characterized in that: described three power cores and ground connection core are enclosed with first insulating barrier, interior reinforced layer outward successively; Interior reinforced layer adopts lapping layer in the wrapped formation of polyester belt, aramid fiber braiding to constitute braid, the outer lapping layer of the wrapped formation of polyester belt is processed; Three power cores and the mutual stranded formation cable core of ground connection core of parcel reinforced layer, stranded lay ratio is not more than 8 during the cable core stranding, and the center of cable core and the outside are respectively equipped with the tensile core of wrapping up second insulating barrier; Tensile core adopts past high strength aramid fiber skein silk to close the rope formation, is enclosed with inner restrictive coating, outer reinforced layer, external sheath layer successively outside the tensile core of three power cores of parcel reinforced layer, ground connection core and parcel second insulating barrier.

Described self-bearing type tension flexible cable is characterized in that: the wrapped rate of putting up of lapping layer is not less than 30% in described, and the wrapped rate of putting up of outer lapping layer is not less than 25%.

Described self-bearing type tension flexible cable is characterized in that: it is haloflex that described inner restrictive coating, external sheath layer adopt material.

Described self-bearing type tension flexible cable is characterized in that: described outer reinforced layer adopts the braiding of aramid fiber silk to constitute.

The utility model has the advantages that:

1, center clearance and crack, limit all adopt the high strength tensile materials aramid fiber silk that extrudes second insulating barrier as filling the double as tensile core, have shared the required pulling force that bears of cable insulation core.

2, wrapped+wrapped compound mode of aramid fiber silk braiding+polyester belt that polyester belt is adopted in the outside of insulating barrier has effectively been protected the core damage that causes because of the harmful friction between the insulated wire cores, shares the required pulling force that bears of insulated wire cores once more.

3, adopt 6 types of soft copper conductors, the lay ratio of cable core is controlled at below 10, has guaranteed the softness of cable.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Embodiment

Referring to Fig. 1:

Self-bearing type tension flexible cable; Comprise three power cores 1 and ground connection core 2; Three power cores 1 and ground connection core 2 be outer to be enclosed with first insulating barrier 3, interior reinforced layer successively; Interior reinforced layer adopts lapping layer 4 in the wrapped formation of polyester belt, aramid fiber braiding to constitute braid 5, the outer lapping layer 6 of the wrapped formation of polyester belt is processed; Three power cores 1 and ground connection core 2 mutual stranded formation cable cores of parcel reinforced layer, stranded lay ratio is not more than 8 during the cable core stranding, and the center of cable core and the outside are respectively equipped with the tensile core 8 of parcel second insulating barrier 7; Tensile core 8 adopts past high strength aramid fiber skein silk to close the rope formation, and three power cores 1 of parcel reinforced layer, ground connection core 2 are enclosed with inner restrictive coating 9, outer reinforced layer 10, external sheath layer 11 successively with tensile core 8 outsides of parcel second insulating barrier 7.

The wrapped rate of putting up of interior lapping layer 4 is not less than 30%, and the wrapped rate of putting up of outer lapping layer 6 is not less than 25%.

It is haloflex that inner restrictive coating 9, external sheath layer 11 adopt material.

Outer reinforced layer 10 adopts the braiding of aramid fiber silk to constitute.

Claims

1. self-bearing type tension flexible cable; Comprise three power cores and ground connection core; It is characterized in that: described three power cores and ground connection core are enclosed with first insulating barrier, interior reinforced layer outward successively; Interior reinforced layer adopts lapping layer in the wrapped formation of polyester belt, aramid fiber braiding to constitute braid, the outer lapping layer of the wrapped formation of polyester belt is processed; Three power cores and the mutual stranded formation cable core of ground connection core of parcel reinforced layer, stranded lay ratio is not more than 8 during the cable core stranding, and the center of cable core and the outside are respectively equipped with the tensile core of wrapping up second insulating barrier; Tensile core adopts past high strength aramid fiber skein silk to close the rope formation, is enclosed with inner restrictive coating, outer reinforced layer, external sheath layer successively outside the tensile core of three power cores of parcel reinforced layer, ground connection core and parcel second insulating barrier.

2. self-bearing type tension flexible cable according to claim 1 is characterized in that: the wrapped rate of putting up of lapping layer is not less than 30% in described, and the wrapped rate of putting up of outer lapping layer is not less than 25%.

3. self-bearing type tension flexible cable according to claim 1 is characterized in that: it is haloflex that described inner restrictive coating, external sheath layer adopt material.

4. self-bearing type tension flexible cable according to claim 1 is characterized in that: described outer reinforced layer adopts the braiding of aramid fiber silk to constitute.