CN204834101U - a tow cable - Google Patents

Abstract

The utility model provides a towing cable, which includes a tensile center, and several unit elements are arranged outside the tensile center, and the outer sides of the unit elements are sequentially provided with a first shielding layer and a low-smoke and halogen-free The outer sheath, between the unit element and the tensile center, and between the unit element and the shielding layer are filled with a protective filling layer; wherein, the unit element is composed of a wrapping layer, a second shielding layer, a protective filling layer and It is composed of several strands of intertwined fiber-reinforced conductors, the wrapping layer is wrapped on the outside of the second shielding layer, and the protective filling layer is filled in the gap between the wrapping layer and the fiber-reinforced conductor. Compared with the prior art, the utility model has the following beneficial effects: 1. The insulated wire core adopts a fiber-reinforced soft conductor structure, which increases the bending resistance of the conductor. 2. Double shielding layer has good anti-electromagnetic interference performance.

Description

a tow cable

technical field

The utility model relates to a towing cable, which belongs to the technical field of cables.

Background technique

At present, the towing cables for outdoor driving and cranes in various industrial and mining enterprises use halogen-containing materials such as nitrile composite PVC, neoprene, etc. When the wires and cables combined with these materials burn, they will produce a lot of smoke, and because they contain halogen The gas released is not only harmful to the human body and suffocating, but also causes indirect damage to the operating equipment. With the improvement of environmental protection and safety awareness of users, requirements for the use of low-smoke, halogen-free and flame-retardant cables for overall equipment, including tow cables, have been raised.

The towing cable is constantly bent, stretched and moved during use, which requires the cable structure to be tight and soft, and the material used has a small Shore hardness. Because the cable is used outdoors, the sheath is required to have excellent crack resistance and weather resistance. Therefore, the insulation layer, The low-smoke and halogen-free materials used for the protective layer and the outer sheath are cross-linked by irradiation to change the molecular structure of the material, improve the crack resistance and weather resistance of the material, and overcome the shortcomings of the cross-linked low-smoke and halogen-free materials that are too hard to maintain softness. The cable has good anti-interference performance through the double copper wire braided shielding layer.

Utility model content

Aiming at the defects in the prior art, the purpose of this utility model is to provide a tow cable.

The utility model is achieved through the following technical solutions:

A tow cable, which includes a tensile center, and several unit elements are intertwined on the outside of the tensile center, and the outer sides of all the unit elements are sequentially provided with a first shielding layer and a low-smoke and halogen-free The outer sheath, between the unit element and the tensile center, and between the unit element and the first shielding layer are filled with an outer protection filling layer; wherein, the unit element is composed of a wrapping layer, a second shielding layer, and an inner protection filling layer. Layer and two intertwined fiber-reinforced conductors with insulating layers, the wrapping layer is wrapped on the outside of the second shielding layer, and the inner protective filling layer is filled in the gap between the wrapping layer and the fiber-reinforced conductor.

As a preferred solution, the number of the unit elements is 4-8 strands.

As a preferred solution, the number of the fiber-reinforced conductors is 2-6 strands.

As a preferred solution, both the first shielding layer and the second shielding layer are braided copper wire shielding layers, and the insulating layer, inner protective filling layer, outer protective filling layer, and outer sheath are radiation cross-linked low-smoke Halogen free material.

Compared with the prior art, the utility model has the following beneficial effects:

1. The insulated wire core adopts fiber-reinforced flexible conductor structure, which increases the bending resistance of the conductor.

2. The cable is soft and has a small bending radius, which meets the requirements of low-smoke and halogen-free.

3. Double shielding layer has good anti-electromagnetic interference.

Description of drawings

Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

Fig. 1 is the cross-sectional schematic diagram of the cable of the present utility model;

In the figure: 1. Fiber reinforced conductor; 2. Low-smoke halogen-free insulating layer; 3. Inner protective filling layer; 4. Second shielding layer; 5. Wrapping layer; 6. Tensile center; 7. Outer protective filling layer ; 8, the first shielding layer; 9, low-smoke halogen-free outer sheath.

Detailed ways

The utility model is described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the utility model, but do not limit the utility model in any form. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present utility model. These all belong to the protection domain of the present utility model.

A cross-section of a towing cable is shown in Figure 1, which includes a tensile center 6, four unit elements are intertwined on the outside of the tensile center 6, and the outer sides of all unit elements are sequentially provided with first shielding from the inside to the outside layer 8 and the smoke-free halogen outer sheath 9, between the unit unit and the tensile center 6, and between the unit unit and the first shielding layer 8 are filled with an outer protective filling layer 7; , the second shielding layer 4, the inner protective filling layer 3, and two intertwined fiber-reinforced conductors 1 with a low-smoke halogen-free insulating layer 2. The wrapping layer 5 is wrapped on the outside of the fiber-reinforced conductor 1, and the inner protective filling The layer 3 fills the space between the wrapping layer 5 and the fiber-reinforced conductor 1 .

The specific embodiments of the present utility model have been described above. It should be understood that the utility model is not limited to the above-mentioned specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the utility model.

Claims (5)

1. one kind is dragged and makes cable, it is characterized in that, it comprises tension center, be provided with some root unit parts with being wound around mutually outside described tension center, all described unary outsides are provided with the first screen and low smoke and zero halogen outer jacket from inside to outside successively, are all filled with outer protection packed layer between unit piece and tension center and between unit piece and the first screen; Wherein, described unit piece is strengthened conductor by lapping layer, secondary shielding layer, interior protection packed layer and two strands of fibers with insulating barrier be mutually wound around and is formed; lapping layer is coated on outside secondary shielding layer, and interior protection packed layer is filled in lapping layer and fiber is strengthened in the space between conductor.

2. drag as claimed in claim 1 and make cable, it is characterized in that, described unary quantity is 4 ~ 8 strands.

3. drag as claimed in claim 1 and make cable, it is characterized in that, in described unit piece, the quantity of conductor strengthened by fiber is 2 ~ 6 strands.

4. drag as claimed in claim 1 and make cable, it is characterized in that, described first screen and secondary shielding layer are proof copper-wire braided screen.

5. drag as claimed in claim 1 and make cable, it is characterized in that, described insulating barrier, interior protection packed layer, outer protection packed layer, outer jacket are irradiation crosslinking type low-smoke halogen-free material.