Cable for special operation vehicle

Abstract

The utility model relates to a cable for a special operation vehicle, and belongs to the technical field of cables. According to the technical scheme, three control wire cores are arranged in a delta shape to form a control cable core, a control wire core cabling wrapping tape (5) is arranged outside the control cable core to form a control unit group, two control unit groups and four power wire cores are twisted to form a cable core (11), and a filling core (10) is arranged in the cable core; a filling layer (6), an aramid fiber braid layer (7), an isolation sleeve (8) and an interlocking armor layer (9) are sequentially arranged outside the cable core; and the interlocking armor layer is formed by spirally and annularly buckling, covering and wrapping aluminum alloy belts. The beneficial effects of the cable are that the cable core is ensured to be round and compact, core breakage caused by movement of the cable conductor when the cable is bent for a long time is prevented, the aluminum alloy belt interlocked armor layer is adopted, the internal structure of the cable is protected, the tensile property and the corrosion resistance of the cable are improved, the service life of the cable is prolonged, the frequency of cable replacement is reduced, and the cost is reduced. And the cost of the cable is saved.

Description

Technical Field

[0001] The utility model relates to a cable for a special operation vehicle, belonging to the technical field of cables. Background Art

[0002] Special operation vehicles refer to vehicles that often go out to undertake special operation tasks, such as garbage shovel trucks. Since garbage shovel trucks are used in a special environment, mainly in large garbage transfer stations or garbage dumps in living areas, this environment will produce a large amount of corrosive gases. This corrosive gas is a strong acid and alkali, which will quickly corrode the external structure of the cable. Therefore, the service life of the supporting cables of special operation vehicles will not be very long, and generally need to be replaced every one to two years. The cable cost is high and the service life is short. Once a failure occurs, the replacement cost is high, and it brings great risks to the safe operation of special operation vehicles. Utility Model Content

[0003] The utility model aims to provide a cable for special operation vehicles, which ensures that the wire core is round and tight, prevents the cable conductor from moving and causing the core to break when the cable is bent for a long time, adopts an aluminum alloy belt interlocking armor layer, protects the internal structure of the cable, improves the tensile strength and corrosion resistance of the cable, increases the service life of the cable, reduces the frequency of cable replacement, saves the cost of the cable, and solves the problems existing in the background technology.

[0004] The technical solution of the utility model is:

[0005] A cable for special operation vehicles, comprising a power core conductor, a power core insulation layer, a control core conductor, a control core insulation layer, a control core cable wrapping tape, a filling core, a filling layer, an aramid braided layer, an isolation sleeve and an interlocking armor layer. A power core insulation layer is arranged outside the power core conductor to form a power core; a control core insulation layer is arranged outside the control core conductor to form a control core, three control cores are arranged in a finished shape to form a control cable core, a control core cable wrapping tape is arranged outside the control cable core to form a control unit group, two control unit groups and four power cores are twisted to form a cable core, and a filling core is arranged inside the cable core; a filling layer, an aramid braided layer, an isolation sleeve and an interlocking armor layer are arranged in sequence outside the cable core; the interlocking armor layer is formed by spirally interlocking and overlapping aluminum alloy strips.

[0006] The power line core conductor and the control line core conductor are both copper conductors, and are twisted together using Class 6 soft copper conductors that comply with IEC 60228. The power line core conductors and the control line core conductors are twisted at a pitch diameter ratio of 8-10 times. The smaller the pitch diameter ratio, the better the cable flexibility. Because the cable bends back and forth with the garbage grab, the cable conductor must be as soft as possible to prevent it from breaking.

[0007] The power line core insulation layer and the control line core insulation layer are both insulated by TPEE elastomer.

[0008] The control cable core cabling tape is made of thin non-woven fabric with a thickness of 0.05 mm, which does not affect the softness of the control cable core. The control cable core cabling section diameter ratio is 12-14 times, and the twisting direction is left.

[0009] The filling core is a PVC rubber core, which is cylindrical and supports the cable core without wrapping tape. The cable core to cable section diameter ratio is 12-14 times, and the twisting direction is right.

[0010] The filling layer is formed by extruding non-vulcanized rubber.

[0011] The isolation sleeve is a PVC elastomer isolation sleeve with a thickness of 1.0 mm.

[0012] The aluminum alloy strip has a width of 12.7 mm and a thickness of 0.51 mm.

[0013] The beneficial effects of the utility model are: ensuring that the wire core is round and tight, preventing the cable conductor from moving and causing the core to break when the cable is bent for a long time, adopting an aluminum alloy belt interlocking armor layer to protect the internal structure of the cable, improving the tensile strength and corrosion resistance of the cable, increasing the service life of the cable, reducing the frequency of cable replacement, and saving the cost of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the interlocking armor layer structure of the utility model;

[0016] In the figure: power line core conductor 1, power line core insulation layer 2, control line core conductor 3, control line core insulation layer 4, control line core cable wrapping tape 5, filling layer 6, aramid braided layer 7, isolation sleeve 8, interlocking armor layer 9, filling core 10, cable core 11. DETAILED DESCRIPTION

[0017] The present invention will be further described below through examples in conjunction with the accompanying drawings.

[0018] A cable for a special operation vehicle comprises a power core conductor 1, a power core insulation layer 2, a control core conductor 3, a control core insulation layer 4, a control core cable wrapping tape 5, a filling core 10, a filling layer 6, an aramid braided layer 7, an isolation sleeve 8 and an interlocking armor layer 9. A power core insulation layer 2 is arranged outside the power core conductor 1 to form a power core; a control core insulation layer 4 is arranged outside the control core conductor 3 to form a control core; three control cores are arranged in a finished shape to form a control cable core; a control core cable wrapping tape 5 is arranged outside the control cable core to form a control unit group; two control unit groups and four power cores are twisted to form a cable core; a filling core 10 is arranged at the center of the cable core; a filling layer 6, an aramid braided layer 7, an isolation sleeve 8 and an interlocking armor layer 9 are arranged in sequence outside the cable core; the interlocking armor layer 9 is formed by spirally interlocking and overlapping aluminum alloy strips.

[0019] The power line core conductor 1 is made of 6 types of soft copper conductors in accordance with IEC 60228, and is twisted at a pitch ratio of 8-10 times. After twisting, TPEE elastomer insulation is extruded to ensure that the power line core is round and tight, and to prevent the cable conductor from moving and breaking when the cable is bent for a long time. The four-core power line core has an equal cross-section.

[0020] The control line core conductor 3 is formed by twisting 6 types of soft copper conductors that comply with IEC 60228, and is twisted at a pitch-diameter ratio of 8-10 times. After twisting, TPEE elastomer insulation is extruded by extrusion. The six-core control line cores are divided into two groups, and three cores in each group are cabled separately. The cable pitch-diameter ratio is 8-10 times, and they are twisted to the left to form a control cable core. A layer of 0.05mm thick non-woven fabric is wrapped around the outside of the control cable core to form a control unit group.

[0021] Two control unit groups and four-core power line cores are cabled as a whole, and a PVC core is added to the center of the cable core as a support for the cable core. The cable core has a pitch-diameter ratio of 12-14 times, the twisting direction is right, and the cable core is not wrapped with tape.

[0022] After the cable is completed, a layer of non-vulcanized rubber is extruded on the outside of the cable core as the side filling material and the inner sheath (filling layer). The inner sheath is extruded to ensure the roundness and compactness of the entire cable core. If it is not filled compactly, the cable will be bent for a long time and the core will easily move, eventually causing cable bulging and core breakage.

[0023] A layer of aramid yarn is woven outside the filling layer as reinforcement, which is the aramid braided layer 7. The aramid braided yarn can be directly embedded in the soft non-vulcanized rubber to enhance the tensile performance of the outer surface during the cable bending process. The function of the aramid braided layer is to enhance the tensile performance of the entire cable.

[0024] A layer of PVC elastic isolation sleeve is extruded outside the aramid braided layer 7. The main function of this isolation sleeve is to serve as the inner protective layer of the interlocking armor, and the thickness is 1.0 mm.

[0025] A layer of aluminum alloy belt is interlocked and armored outside the PVC elastomer isolation sleeve as the outermost protective layer. The width of the aluminum alloy belt is 12.7mm and the thickness is 0.51mm. The self-locking armoring is carried out by the interlocking armoring machine. The aluminum alloy belt is made into an armored structure by spiral interlocking overlapping and wrapping. The protruding part of the armor leaves enough space for the cable core to avoid mechanical damage from the outside. The tensile strength of the aluminum alloy belt is above 270MPa, and it has good tensile resistance. It also has the advantages of compression resistance, impact resistance, easy bending, corrosion resistance, light weight, and high flame retardant grade. This armoring method not only does not affect the bending performance of the cable, but also protects the internal structure of the cable. This armoring method saves the cost of non-metallic sheath materials. Traditional garbage shovel truck cables require the outer sheath material to be resistant to acid and alkali corrosion, and of course some flame retardant and oil resistant properties. Generally, we choose flame-retardant TPU materials, which are acid-resistant and alkali-resistant and relatively soft. However, this non-metallic material will also reach the end of its service life after being used in this environment for a period of time, such as cracking of the sheath and breaking of the insulating core. The service life is short, and the general service life is only one to two years. In addition, the price of flame-retardant TPU materials is high. The price per kilogram of aluminum alloy is less than 1 / 3 of that of flame-retardant TPU. Although the density is twice that of TPU, the overall cost will save half of the price, and the internal structure of the cable is well protected. The anti-corrosion advantage increases the service life of the cable from the original 1-2 years to more than 5 years. Once the cable burns, since the outermost layer is inorganic, the entire cable not only has good flame retardant properties, but also only burns the outermost armor layer in a short time, and will not release a large amount of toxic gases. Therefore, overall, this method of replacing the original TPU sheath with a chain armored aluminum alloy belt is both economical and environmentally friendly. The utility model can extend the service life of the cable for more than five years without increasing the cost of the cable.

Claims

1. A cable for special operation vehicles, characterized in that: The invention comprises a power core conductor (1), a power core insulation layer (2), a control core conductor (3), a control core insulation layer (4), a control core cable wrapping tape (5), a filling core (10), a filling layer (6), an aramid braided layer (7), an isolation sleeve (8) and an interlocking armor layer (9). The power core insulation layer (2) is arranged outside the power core conductor (1) to form a power core; the control core insulation layer (4) is arranged outside the control core conductor (3) to form a control core; three control cores are arranged in a finished shape to form a control cable core; a control core cable wrapping tape (5) is arranged outside the control cable core to form a control unit group; two control unit groups and four power cores are twisted to form a cable core (11); a filling core (10) is arranged inside the cable core; a filling layer (6), an aramid braided layer (7), an isolation sleeve (8) and an interlocking armor layer (9) are arranged outside the cable core (11) in sequence; and the interlocking armor layer (9) is formed by spirally interlocking and overlapping aluminum alloy strips.

2. A cable for special operation vehicles according to claim 1, characterized in that: The power line core conductor (1) and the control line core conductor (3) are both copper conductors.

3. The cable for special operation vehicles according to claim 1, characterized in that: The power line core insulation layer (2) and the control line core insulation layer (4) are both insulated using TPEE elastomer.

4. The cable for special operation vehicles according to claim 1, characterized in that: The control wire core cable wrapping tape (5) is made of thin non-woven fabric, and the thickness of the thin non-woven fabric is 0.05 mm.

5. The cable for special operation vehicles according to claim 1, characterized in that: The filling core (10) is a PVC rubber core.

6. The cable for special operation vehicles according to claim 1, characterized in that: The filling layer (6) is formed by extrusion of non-vulcanized rubber.

7. The cable for special operation vehicles according to claim 1, characterized in that: The isolation sleeve (8) is a PVC elastomer isolation sleeve with a thickness of 1.0 mm.

8. The cable for special operation vehicles according to claim 1, characterized in that: The aluminum alloy strip has a width of 12.7 mm and a thickness of 0.51 mm.

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