CN201226261Y - Power supply cable for livestock electric fence - Google Patents

Abstract

A power supply cable for livestock electric fences, comprising a sheath, a polyester tape and a cable core, the above-mentioned cable core includes an inner conductor and an insulator, and the above-mentioned inner conductor is arranged in the insulator; the above-mentioned polyester tape is covered on the insulator of the cable core The above-mentioned sheath is sheathed on the polyester tape; it is characterized in that: the inner conductor of the above-mentioned cable core is twisted by a plurality of tinned round copper wires, and the radial cross-sectional area of the above-mentioned inner conductor is less than or equal to 0.4mm ² . Therefore, the power supply cable of the present invention can transmit high voltage, short pulse, pulse voltage with small current. The power supply cable of the utility model is connected between the electronic excitation source of the livestock electric fence and the catenary, and the power supply cable of the utility model can transmit the pulse voltage generated by the electronic excitation source of the livestock electric fence to the catenary.

Description

Supply cables for livestock electric fences

technical field

The utility model relates to a power supply cable for a livestock electric fence, more specifically, relates to a power supply cable for a livestock electric fence which uses an electronic excitation source with high voltage, short pulse and small current as a power supply.

Background technique

Livestock electric fence is a new technology that has gradually emerged in recent years. Its characteristic is that the pulse excitation power supply is used to transmit high-voltage short pulses to the catenary surrounded by bare wires, the catenary and the ground are insulated, and the two ends of the pulse excitation power are respectively Connected with the catenary and the earth, when the body of the animal touches the catenary, the pulse excitation power supply passes through the circuit formed by the catenary-animal-earth, and the animal will get a short and strong electric shock feeling, so that the animal will quickly form a way to avoid the electric shock. The conditioned reflex of the fence, and the psychological barrier of fear, achieve the purpose of controlling livestock.

The characteristics of the pulse voltage generated by the pulse excitation power supply of the livestock electric fence are: the peak value of the pulse voltage is as high as 4500 volts to 9000 volts, and in the cycle of a voltage pulse, the duration of the high voltage pulse is very short, that is, the pulse duty cycle Very small; at the same time, the pulse excitation power supply limits the current generated by the livestock touching the grid to below 10mA, so the actual power to be transmitted by the power supply cable is very small. Although the peak value of the above-mentioned pulse voltage is very high, because the duration of the pulse is very short, the duty cycle is very small, and the electronic excitation power supply also has the functions of current limiting and alarming, so the livestock electric fence can not only safely surround the livestock In the fence, it prevents the infringement of external predators and the loss of livestock running out of the fence without threatening the lives of livestock.

According to the characteristics of the pulse voltage generated by the electronic excitation source of the livestock electric fence and supplied to the catenary, it has become a current trend to design a power supply cable for the livestock electric fence that can transmit high voltage, short pulse, and small current pulse voltage. Technical problems that need to be solved urgently.

Contents of the invention

The technical problem to be solved by the utility model is to provide a power supply cable for livestock electric fence, which can transmit high voltage, short pulse and pulse voltage with small current.

In order to solve the problems of the technologies described above, the technical scheme adopted by the utility model is as follows:

A power supply cable for livestock electric fences, comprising a sheath, a polyester tape and a cable core, the above-mentioned cable core includes an inner conductor and an insulator, and the above-mentioned inner conductor is arranged in the insulator; the above-mentioned polyester tape is covered on the insulator of the cable core The above-mentioned sheath is sheathed on the polyester tape; it is characterized in that: the inner conductor of the above-mentioned cable core is twisted by a plurality of tinned round copper wires, and the radial cross-sectional area of the above-mentioned inner conductor is less than or equal to 0.4mm ² .

Since the inner conductor of the cable core is twisted by multiple strands of tinned round copper wires, and the radial cross-sectional area of the inner conductor is less than or equal to 0.4mm ² , the power supply cable of the utility model can transmit high voltage, short pulse, small pulse voltage of current.

In order to enable the insulator to withstand a pulse voltage of 9000-20000 volts, the diameter of the radial section of the insulator is preferably between 3.0 mm and 4.0 mm.

The number of the cable core is one or more than one. When the number of the cable core is more than one, the above-mentioned cable cores are twisted into a cable, and the above-mentioned polyester tape is covered on the twisted cable.

When the power supply cable of the present invention contains multiple cable cores, in order to facilitate the connection of the cable cores, the inner conductors of the cable cores are respectively provided with nylon marking lines of different colors. The two ends of the same cable core can be identified through the above-mentioned nylon marking lines of different colors, thereby facilitating the connection of the cable core.

In order to adapt to the pasture environment with long sunshine time and high ultraviolet intensity, the insulator is preferably made of black polyethylene material with strong ultraviolet resistance, and the sheath is also preferably made of black polyethylene material with strong ultraviolet resistance.

Compared with the prior art, the beneficial effect of the utility model is that since the inner conductor of the cable core is twisted by multiple strands of tinned round copper wires, and the radial cross-sectional area of the inner conductor is less than or equal to 0.4mm ² , the utility model The new power supply cable can transmit high voltage, short pulse, pulse voltage with small current. The power supply cable of the utility model is connected between the electronic excitation source of the livestock electric fence and the catenary, and the power supply cable of the utility model can transmit the pulse voltage generated by the electronic excitation source of the livestock electric fence to the catenary.

The utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.

Description of drawings

Accompanying drawing is the structural representation of the preferred embodiment of the utility model.

Detailed ways

As shown in the accompanying drawings, the power supply cable for the livestock electric fence in this preferred embodiment includes a sheath 1, a polyester tape 2 and four cable cores 31, 32, 33, 34;

The above-mentioned four cable cores 31, 32, 33, 34 all include an inner conductor 4 and an insulator 5, the above-mentioned inner conductor 4 is formed by twisting a plurality of tinned round copper wires, and the radial cross-section of the above-mentioned inner conductor 4 is 0.3mm ^2. The diameter of the radial section of the insulator 5 is 3.5 mm, and the inner conductor 4 is set in the insulator 5; the inner conductor 5 is provided with nylon marking lines 6 of different colors;

The above-mentioned four cable cores 31, 32, 33, 34 are twisted into a cable, the above-mentioned polyester tape 2 is set on the twisted cable, and the above-mentioned sheath 1 is covered on the polyester tape 2.

In order to adapt to the pasture environment with long sunshine time and high ultraviolet intensity, the above-mentioned insulator 5 is made of black polyethylene material with strong ultraviolet resistance, and the above-mentioned sheath 1 is also made of black polyethylene material with strong ultraviolet resistance.

During production, the inner conductors 4 of the four cable cores 31, 32, 33, and 34 are all twisted with 25 strands of 0.2mm tinned round copper wires, twisted in the S direction, and the pitch ratio is about 20:1; the four cables The insulator 5 of core 31, 32, 33, 34 adopts the black polyethylene insulating material that adds carbon black and ultraviolet stabilizer, extrudes the insulator 5 with extruding type, and the radial section diameter of the insulator 5 is 3.5 mm, and extrudes the insulator 5 At the same time, the nylon marking lines 6 of different colors and the inner conductor 4 are synchronously released at the pay-off end, and enter the extrusion die at the same time, so that the nylon marking lines 6 of different colors enter the insulator 5 to form marking lines; four cable cores 31, After the extrusion of 32, 33, and 34 is completed, a 9000V power frequency high voltage withstand voltage test should be carried out.

After the insulator 5 of the four cable cores 31, 32, 33, and 34 is extruded, the four cable cores 31, 32, 33, and 34 are twisted into a cable, and the twisting direction of the cable is still S-direction, and the pitch ratio is 30: 1 or so; wrap the polyester tape 2 while forming the cable, and the covering rate of the polyester tape 2 should be greater than 25%; then, use an extruded tube mold to extrude the sheath 1 on the polyester tape 2, The sheath 1 is made of black polyethylene material with carbon black and UV stabilizer added. The thickness of the sheath should be 1.0mm, the stretch ratio should not be too large, and the sheath 5 should not be squeezed too tightly to maintain a certain degree of flexibility and flexibility of the cable. Easy to unplug the wires.

The power supply cable of the present invention can be produced through the above-mentioned production process.

Claims (6)

1, the service cable used of a kind of livestock electric fence comprises sheath, polyester band and cable core, and above-mentioned cable core comprises inner wire and insulator, and above-mentioned inner wire is located in the insulator; Above-mentioned polyester band is enclosed within on the insulator of cable core, and above-mentioned sheath is enclosed within on the polyester band; It is characterized in that: the inner wire of above-mentioned cable core is by stranded the forming of the zinc-plated circular copper wire of multiply, and the radial section area of above-mentioned inner wire is less than or equal to 0.4mm ²

2, the service cable used of livestock electric fence as claimed in claim 1, it is characterized in that: the radial section diameter of described insulator is between 3.0mm～4.0mm.

3, the service cable used of livestock electric fence as claimed in claim 1 is characterized in that: the bar number of described cable core is one or more, and the stranded stranding of above-mentioned cable core, above-mentioned polyester band are enclosed within on the stranding after stranded.

4, the service cable used of livestock electric fence as claimed in claim 3 is characterized in that: the polyamide fibre mark line that is respectively equipped with different colours in the inner wire of described cable core.

5, the service cable used of livestock electric fence as claimed in claim 1, it is characterized in that: described insulator is made by the black polyethylene material of anti-intensive ultraviolet.

6, the service cable used of livestock electric fence as claimed in claim 1, it is characterized in that: described sheath is made by the black polyethylene material of anti-intensive ultraviolet.

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