CN201788737U - Coal mine electric drill shielded rubber sheathed cable - Google Patents

Abstract

The utility model provides a coal mine electric drill shielding rubber sheathed cable, which consists of a cable core and a sheath. The cable core consists of a central filling core, three strands of power wire cores, a strand of a ground wire core and a strand of a control wire core, wherein the three strands of power wire cores, the strand of a ground wire core and the strand of a control wire core are arranged on the periphery of the filling core, each power core successively includes a power wire core conductor, a power wire core insulator and a semi-conductive shielding layer from inside to outside, each ground wire core consists of a ground wire core conductor and a ground wire core wrapping layer wrapped outside the ground wire core conductor, and each control wire core consists of a control wire core conductor and a control wire core insulation layer wrapped outside the control wire core conductor. Compared with like products, the coal mine electric drill shielding rubber sheathed cable is better in fire resistance and antistatic property, obviously improves bending resistance, and is applicable to coal mine underground power connection of electric drills of rated voltage 0.3/0.5kV or below.

Description

Coal mine electric drill shielded rubber sheathed cable

technical field

The utility model belongs to the technical field of cable manufacturing, in particular to an electric drill shielding rubber-sheathed cable used in coal mines.

Background technique

With the increasing degree of mechanization of coal enterprises, the coal industry's demand for various mining rubber cables is also increasing. In order to ensure the safety of coal mining, higher requirements are put forward for the safety and reliability of cables for various purposes. . Among them, the coal mine electric drill cable needs to be as soft as a rope to adapt to its work requirements. The conductors of the existing electric drill cables for coal mines are generally made of oxygen-free copper rods after wire drawing. Even if the stranding pitch is reduced, the flexibility still cannot meet the requirements. Therefore, we try to use single crystal copper as the conductor, so that the conductor can be made thinner and softer while meeting the corresponding DC resistance requirements, and the service life is greatly extended.

Utility model content

The purpose of the utility model is to provide a shielded rubber-sheathed electric drill cable for coal mines with better flame retardancy, antistatic performance and bending resistance against the deficiencies of the prior art.

The utility model is realized through the following technical solutions:

Coal mine electric drill shielded rubber-sheathed cable is composed of a cable core and a sheath. The cable core is composed of a central core and three power cores, one ground core and one control core around the core. Among them: The power core is composed of the power core conductor, the power core insulation and the semi-conductive shielding layer from the inside to the outside; the ground core is composed of the ground core conductor and the ground core cladding wrapped outside it; It consists of a core conductor and a control core insulation layer wrapped outside it.

Preferably, both the power core conductor and the control core conductor are made of single crystal copper;

Preferably, the sheath is made of silicone rubber.

Preferably, both the power core conductors and the control core conductors are stranded in multiple ways, and the twisting pitch ratio is less than 10 times.

The utility model has the advantages of:

The power line core conductor of the utility model wraps the power line core insulation and semi-conductive shielding layer sequentially, and its flame retardancy and antistatic performance are improved; by using single crystal copper as the conductor, the conductor can meet the corresponding DC resistance requirements It can be made thinner and softer. Compared with similar products, it has higher flexibility and better bending resistance. It is suitable for power connection of electric drills with rated voltage 0.3/0.5kV and below in coal mines.

Description of drawings

Figure 1: Schematic diagram of the cross-sectional structure of the utility model

1. Power core conductor; 2. Power core insulation; 3. Semi-conductive shielding layer; 4. Filling core; 5. Ground core conductor; 6. Ground core cladding; 7. Control core conductor; 8. Control wire core insulation layer; 9. Sheath

Detailed ways

The following are preferred embodiments of the present utility model, and the present utility model can be implemented in any mode according to the content described in the description.

Describe in detail below in conjunction with accompanying drawing:

With reference to accompanying drawing 1, the shielded rubber-sheathed cable of coal mine electric drill is made up of cable core and sheath (9), and cable core is made up of central core (4) and three strands of power cores around the core, one strand of ground core, and one core. The control wire core is composed of strands, in which: the power wire core is the power wire core conductor (1), the power wire core insulation (2) and the semi-conductive shielding layer (3) from the inside to the outside; the ground wire core is composed of the ground wire core conductor ( 5) and the ground wire core cladding (6) wrapped outside it; the control wire core is composed of the control wire core conductor (7) and the control wire core insulating layer (8) wrapped outside it.

Both the power core conductor (1) and the control core conductor (7) are made of single-crystal copper, and the conductor cores are stranded in multiple ways, with a stranding pitch ratio less than 10 times; the sheath (9) is made of silicon rubber.

The utility model specifications are as follows:

Since the power core conductor of the utility model is wrapped with power core insulation and semi-conductive shielding layer in turn, its flame retardancy and antistatic performance are better; by using single crystal copper as the conductor, the conductor can meet the corresponding DC Under the requirements of resistance, it can be made thinner, softer, and has better bending resistance. It is suitable for power connection of electric drills with rated voltage 0.3/0.5kV and below in coal mines.

The above specific implementation methods are only preferred embodiments of this creation, and are not used to limit this creation. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this creation should be included in this creation. within the scope of protection.

Claims (4)

1. Coal mine electric drill shielded rubber sheathed cable is composed of a cable core and a sheath. The power core is composed of power core conductor, power core insulation and semi-conductive shielding layer from the inside to the outside; the ground core is composed of the ground core conductor and the ground core cladding wrapped outside it. ; The control wire core is composed of the control wire core conductor and the control wire core insulation layer wrapped outside it. 2. The shielded rubber-sheathed electric drill cable for coal mine according to claim 1, wherein the power core conductor and the control core conductor are both made of single crystal copper. 3. The shielded rubber-sheathed electric drill cable for coal mine according to claim 1, wherein the sheath is made of silicon rubber. 4. The shielded rubber-sheathed electric drill cable for coal mines according to claim 1, wherein the power core conductors and the control core conductors are both stranded by double strands, and the stranding pitch ratio is less than 10 times.

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