CN212587239U - Winding dragging cable for underground mining engineering - Google Patents
Winding dragging cable for underground mining engineering Download PDFInfo
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- CN212587239U CN212587239U CN202022009973.5U CN202022009973U CN212587239U CN 212587239 U CN212587239 U CN 212587239U CN 202022009973 U CN202022009973 U CN 202022009973U CN 212587239 U CN212587239 U CN 212587239U
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Abstract
The utility model discloses an aboveground mining engineering is with coiling drag cable, its main points are: comprises a main wire core, a monitoring wire core, a center filling and an outer sheath. The braided shielding layer is formed by compositely braiding one strand of braided conductor serving as braided wire and nylon yarn outside the main wire core insulating layer. The braided conductor is formed by twisting metal monofilaments. The semiconductive nylon belt is wrapped outside the braided shielding layer to form a wrapped shielding layer. The monitoring wire core is provided with a monitoring wire core conductor and a monitoring wire core insulating layer in turn from inside to outside along the radial direction of the monitoring wire core. The monitoring wire core conductor is formed by twisting a nylon rope and a conductor. The center filling adopts a saddle-shaped core pad, and the saddle-shaped core pad is extruded outside the monitoring wire core by adopting a semi-conductive rubber or chloroprene rubber material. The center filling and 3 main wire cores are stranded into a cable. The outer sheath is made of chloroprene rubber material and is wrapped outside the 3 main wire cores and the center filling of the twisted cable.
Description
Technical Field
The utility model relates to a power cable technical field specifically is an aboveground mining engineering pulls cable with coiling.
Background
At present, with the continuous improvement of the mechanization and automation degree of a coal mine, an electrical control technology has very important significance in coal mine production. The winding dragging cable for the above-ground mining engineering has very short mechanical life, and the service life is usually 6-10 months, because the cable is in a moving bending state for a long time due to the complexity of the use working conditions. And as cables such as mining cables, port machine cables and the like which need to frequently move for a long time, saddle-shaped cushion cores are arranged in the cables, and damage caused by mutual friction among cable cores is avoided. In the production process of the cable, how to ensure the position fixation of the saddle-shaped pad core and each twisting unit is the most critical.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a simple structure is favorable to increase of service life's aboveground mining engineering to drag cable with coiling.
Realize the utility model discloses the basic technical scheme of purpose is: the utility model provides an aboveground mining engineering is with coiling towing cable, its structural feature is: comprises a main wire core, a monitoring wire core, a center filling and an outer sheath. The main wire core has 3. The 3 main wire core structures are the same, and a main wire core conductor, a main wire core insulating layer and a shielding layer are sequentially arranged along the respective radial directions from inside to outside. The main wire core insulating layer is wrapped outside the main wire core conductor by ethylene propylene rubber. The shielding layer comprises a braided shielding layer and a wrapping shielding layer.
The braided shielding layer is formed by compositely braiding one strand of braided conductor serving as braided wire and nylon yarn outside the main wire core insulating layer. The braided conductor is formed by twisting metal monofilaments. The semiconductive nylon belt is wrapped outside the braided shielding layer to form a wrapped shielding layer.
The monitoring wire core is provided with a monitoring wire core conductor and a monitoring wire core insulating layer in turn from inside to outside along the radial direction of the monitoring wire core. The monitoring wire core conductor is formed by twisting a nylon rope and a conductor.
The center filling adopts a saddle-shaped core pad, and the saddle-shaped core pad is extruded outside the monitoring wire core by adopting a semi-conductive rubber or chloroprene rubber material. The center filling and 3 main wire cores are stranded into a cable.
The outer sheath is made of chloroprene rubber material and is wrapped outside the 3 main wire cores and the center filling of the twisted cable.
The technical scheme based on the basic technical scheme is as follows: the braided conductor of the braided shield layer is formed by stranding 7 metal monofilaments with the thickness of 0.25 mm.
The technical scheme based on the corresponding technical schemes is as follows: the nylon yarn of the braided shield was made of 2/240D.
The technical scheme based on the corresponding technical schemes is as follows: the monitoring wire core conductor is formed by twisting 1 nylon rope and 4 conductors, the twisting pitch diameter ratio is 8 times when the monitoring wire core conductor is twisted, and the 1 nylon rope is arranged in the 4 conductors in a 1+4 structure.
The technical scheme based on the corresponding technical schemes is as follows: the 4 conductors of the monitoring wire core conductor are formed by twisting 6 tinned copper wires. The nylon rope is made of 3/5/210D nylon wires, namely each nylon rope is formed by twisting 5 210D nylon wires and then twisting 3 nylon wires to form the nylon rope.
The technical scheme based on the corresponding technical schemes is as follows: and coating talcum powder on the outer surface of the monitoring wire core.
The technical scheme based on the corresponding technical schemes is as follows: the monitoring wire core insulating layer is made by continuously vulcanizing ethylene propylene rubber with the hardness of 60A-80A.
The utility model discloses following beneficial effect has: (1) at present, the mechanical life of the domestic common mining cable is generally 6-10 months, and the mechanical life of the winding dragging cable for the ground mining engineering adopting the structure can be improved by at least one time.
(2) The utility model discloses a monitoring core conductor adopts the compound hank of nylon rope and conductor to form, require unwrapping wire tension center nylon rope to be greater than the conductor strand during the transposition, and it receives tensile extension to control within 3%, the conductor has adopted 4/6/0.2 compound hank structure, the transposition pitch ratio is 8 times during compound hank, the nylon rope that has selected 3/5/210D is as reinforcing element, and place at the conductor center with 1+4 structural style when the conductor is compound hank, the experiment shows that the elongation is greater than 25% nylon wire can satisfy the tensile 15% problem that does not produce the fracture of conductor.
(3) The utility model discloses a center before the crowded package of monitoring sinle silk packs front surface coating talcum powder, can freely adapt to when the cable uses the bending.
(4) The utility model discloses a braided conductor after the transposition of the braided shield layer of shielding layer is woven as the one in the doubling together with the nylon yarn, winds the semi-conductive nylon belt of package one deck again after weaving, separates braided shield layer and oversheath, is favorable to the bending, and shielding reliability is good, and braided shield is favorable to improving mechanical strength. The nylon yarn material can play the effect of strengthening mechanical strength, and the nylon yarn material can also play the effect of sinle silk discernment owing to can do different colours moreover.
(5) Since the braided conductor, which is one strand of the braided wire of the braided shield layer, has a large outer diameter, the braided conductor cannot be stored in a sufficient length by the pirn of the braiding machine, so that welding of the braided conductor may be involved. In order to prevent the welding spots from being too dense to influence the strength of the weaving layer, the weaving filaments are integrally welded, the single bundle of strands in each spindle of the pirn need to be welded at intervals of at least 3mm, the overall replacement distance of the pirn is not less than 1m, and therefore the conductor joint is ensured not to be too close to influence the overall mechanical strength.
(6) The utility model is characterized in that a first positioning die and a second positioning die are respectively arranged at the feeding end and the discharging end at the two ends of the central hollow pipe of the feeding device of the saddle-shaped core pad, and the saddle-shaped core pad is guided by the first positioning die and the second positioning die and is coaxial with the cage-type cable former when entering the cage-type cable former; the discharge end of the second positioning die is conical, so that the saddle-shaped core cushion is closer to a cage-type cable former during discharging, the positioning is more accurate, each cambered surface of the second positioning die is attached to the surface of the main wire core through the die during twisting, and the cable forming tension is uniform and good.
Drawings
Fig. 1 is the utility model discloses a structure schematic diagram of aboveground mining engineering is with coiling towing cable.
Fig. 2 is a schematic structural view of the first positioning mold.
Fig. 3 is a schematic structural view of a second positioning mold.
Fig. 4 is a schematic view when viewed from the rear of fig. 3.
The reference numbers in the drawings are:
a main wire core 1, a main wire core conductor 1-1, a main wire core insulating layer 1-2, a shielding layer 1-3, a braided shielding layer 1-31, a braided conductor 1-31-1, nylon yarn 1-31-2, a lapping shielding layer 1-32,
a monitor core 2, a monitor core conductor 2-1, a monitor core insulation layer 2-2,
a center filling 3, an outer sheath 4, a first positioning die 51 and a second positioning die 52.
Detailed Description
In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is provided in connection with the accompanying drawings. The description of the orientation of the utility model is performed according to the orientation shown in fig. 1, that is, the up-down left-right direction shown in fig. 1 is the up-down left-right direction of the description, the side towards which fig. 1 faces is the front side, and the side departing from fig. 1 is the rear side.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present invention, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.
It should be understood that the terms "upper", "lower", "inner", "outer", etc. indicate orientations or positional relationships based on the positional relationships illustrated in the drawings, and are used only for convenience in describing the present invention or simplifying the description, but do not indicate that a particular orientation must be provided.
(example 1)
See fig. 1, the utility model discloses an aboveground mining engineering is with coiling drag cable includes main core 1, supervision sinle silk 2, centre packing 3 and oversheath 4.
Referring to fig. 1, the main wire cores 1 are provided with 3 main wire cores 1, the 3 main wire cores 1 are identical in structure, and a main wire core conductor 1-1, a main wire core insulating layer 1-2 and a shielding layer 1-3 are sequentially arranged from inside to outside along the respective radial direction.
The main wire core conductor 1-1 is formed by twisting a plurality of tinned copper wire bundles and then twisting the tinned copper wire bundles again. The main wire core insulating layer 1-2 is made of ethylene propylene rubber with the hardness of 60A-80A through continuous vulcanization, and the main wire core insulating layer 1-2 is extruded outside the main wire core conductor 1-1.
Referring to fig. 1, the shielding layers 1-3 include braided shielding layers 1-31 and wrapped shielding layers 1-32.
The braided shielding layer 1-31 is formed by taking a braided conductor 1-31-1 as one strand of braided yarn and compounding and braiding nylon yarns 1-31-2 outside the main wire core insulating layer 1-2.
The nylon yarns 1-31-2 are made of 2/240D, namely each strand of nylon yarn is formed by twisting 2 pieces of 240D nylon wires.
The braided conductor 1-31-1 is formed by twisting 7 metal monofilaments, copper monofilaments in this example, of 0.25 mm.
The semiconductive nylon belt is wrapped outside the woven shielding layers 1-31 to form wrapped shielding layers 1-32.
Referring to fig. 1, the monitoring core 2 is provided with a monitoring core conductor 2-1 and a monitoring core insulating layer 2-2 in sequence from inside to outside along the radial direction thereof. The monitoring wire core conductor 2-1 is formed by twisting 1 nylon rope and 4 conductors repeatedly, the twisting pitch diameter ratio is 8 times during the repeated twisting, the conductor is formed by twisting 6 tinned copper wires, and the 1 nylon rope is arranged in the 4 conductors in a 1+4 structure. The monitoring wire core insulating layer 2-2 is made of ethylene propylene rubber with the hardness of 60A-80A through continuous vulcanization. The nylon rope is made of 3/5/210D nylon wires, namely each nylon rope is formed by twisting 5 210D nylon wires and then twisting 3 nylon wires to form the nylon rope.
The center filling 3 adopts a saddle-shaped core cushion. The saddle-shaped core pad is wrapped outside the monitoring wire core 2 in a squeezing mode by adopting a semi-conductive rubber or chloroprene rubber material, and the outer surface of the monitoring wire core 2 is coated with talcum powder.
The center is filled with 3 and 3 main wire cores 1 which are twisted into a cable.
The outer sheath 4 is made of chloroprene rubber material and is extruded outside the 3 main wire cores 1 and the center filler 3 which are stranded into a cable.
Referring to fig. 1 to 4, the production process of the winding trailing cable for the overground mining engineering of the utility model comprises the following steps:
1) and twisting a plurality of tinned copper wire bundles and then twisting again to form the main wire core conductor 1-1.
2) And extruding the ethylene propylene rubber outside the main wire core conductor 1-1 through an extruding machine to form a main wire core insulating layer 1-2, and then vulcanizing the ethylene propylene rubber of the main wire core insulating layer 1-2 through vulcanizing equipment.
3) The braided conductor 1-31-1 is used as one strand of braided yarn and is compositely braided with nylon yarn 1-31-2 outside the main wire core insulating layer 1-2 to form a braided shielding layer 1-31.
3.1) braided conductor 1-31-1 is stranded of 7 metal filaments of 0.25mm, copper filaments in this example. The braided filaments were braided with a corresponding strand of 7/0.25 braided conductor 1-31-1 using 2/240D nylon yarn.
3.2) the braided conductors 1-31-1 are integrally welded, the single bundle of strands in each spindle of pirn needs to be welded at intervals of at least 3mm, and the overall replacement distance of the pirn is not less than 1 m.
4) The semiconductive nylon belt is wrapped outside the woven shielding layers 1-31 to form wrapped shielding layers 1-32.
5) The monitoring core conductor 2-1 is formed by twisting 1 nylon rope and 4 conductors, the nylon rope is larger than the conductors in the paying-off tension center during twisting, and the extension of the nylon rope under tension is controlled within 3%. The conductor is formed by twisting 6 tinned copper wires with the thickness of 0.2 mm. The 4 conductors have adopted 4/6/0.2's compound hank structure, and every conductor is twisted by 6 tinned copper wires of 0.2mm promptly, and 4 strands are twisted again, and the twist pitch ratio is 8 times during compound hank, and the nylon rope adopts 3/5/210D, and every nylon rope is twisted by 5 nylon wires of 210D promptly, and 3 strands are twisted again and are formed the nylon rope to place 4 conductor centers with 1+4 structural style when 4 conductors twist again. And extruding ethylene propylene rubber outside the monitoring wire core conductor 2-1, and then carrying out continuous vulcanization to form a monitoring wire core insulating layer 2-2 so as to prepare the monitoring wire core 2.
6) The semi-conductive rubber or chloroprene rubber material is extruded and wrapped outside the monitoring wire core 2 to form a saddle-shaped padding core, so as to prepare a center filling 3, and the outer surface of the monitoring wire core 2 is coated with talcum powder before extrusion.
The saddle-shaped padding core is processed by adopting a pot-type vulcanizing device or a horizontal drying pipeline, and a large amount of talcum powder is put into a cooling water tank during extruding, so that the talcum powder is fully adhered to the surface of the saddle-shaped padding core.
7) The cage type cabling machine is used for stranding 3 main wire cores 1 and the center filling 3, the main wire cores 1 rotate in a cabling mode, meanwhile, the feeding device of the saddle-shaped pad cores of the center filling 3 synchronously rotates with the rotation direction of the stranding cage, and each cambered surface of the saddle-shaped pad cores is guaranteed to be attached to the surface of the corresponding main wire cores 1.
The feeding end and the discharging end at two ends of a central hollow pipe of the feeding device of the saddle-shaped core pad are respectively provided with a first positioning die 51 and a second positioning die 52. The saddle-shaped core mat is guided by the first positioning die 51 and the second positioning die 52 so as to be coaxial with the cage cabling machine when entering the cage cabling machine.
The first positioning die 51 is disc-shaped, and the center of the first positioning die is provided with a wire passing through hole which penetrates through the two ends of the first positioning die along the axial direction of the first positioning die and corresponds to the saddle-shaped core pad in shape.
Second positioning die 52 is an organic whole, including being cylindric feed end and the discharge end that is coniform, and central authorities are equipped with along its axial and run through its both ends with the corresponding line through-hole of crossing of shape of saddle-shaped core pad, more are close the transposition mould of cage cabling machine when the discharge end adopts coniform to enable the ejection of compact of saddle-shaped core pad, and the location is more accurate.
8) And extruding and wrapping 3 main wire cores 1 twisted into a cable and the central filling 3 with chloroprene rubber materials to form an outer sheath 4.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (7)
1. The utility model provides an aboveground mining engineering is with coiling towing cable which characterized in that: the cable comprises a main cable core, a monitoring cable core, a center filling and an outer sheath; the number of the main wire cores is 3; the 3 main wire cores have the same structure and are sequentially provided with a main wire core conductor, a main wire core insulating layer and a shielding layer from inside to outside along the respective radial directions; the main wire core insulating layer is extruded outside the main wire core conductor by ethylene propylene rubber; the shielding layer comprises a braided shielding layer and a wrapping shielding layer;
the braided shielding layer is formed by compositely braiding a strand of braided conductor serving as braided wire and nylon yarn outside the main wire core insulating layer; the braided conductor is formed by twisting metal monofilaments;
the semi-conductive nylon belt is wrapped outside the braided shielding layer to form a wrapping shielding layer;
the monitoring wire core is provided with a monitoring wire core conductor and a monitoring wire core insulating layer in sequence from inside to outside along the radial direction of the monitoring wire core; the monitoring wire core conductor is formed by twisting a nylon rope and a conductor;
the center filling adopts a saddle-shaped core pad, and the saddle-shaped core pad is extruded outside the monitoring wire core by adopting a semi-conductive rubber or chloroprene rubber material; the center is filled and 3 main wire cores are stranded to form a cable;
the outer sheath is made of chloroprene rubber material and is wrapped outside the 3 main wire cores and the center filling of the twisted cable.
2. The coiled towing cable for above ground mining engineering according to claim 1, characterized in that: the braided conductor of the braided shield layer is formed by stranding 7 metal monofilaments with the thickness of 0.25 mm.
3. The coiled towing cable for above ground mining engineering according to claim 1, characterized in that: the nylon yarn of the braided shield was made of 2/240D.
4. A spooled trailing cable for earth mining engineering according to any of claims 1 to 3, wherein: the monitoring wire core conductor is formed by twisting 1 nylon rope and 4 conductors, the twisting pitch diameter ratio is 8 times when the monitoring wire core conductor is twisted, and the 1 nylon rope is arranged in the 4 conductors in a 1+4 structure.
5. The coiled towing cable for above ground mining engineering according to claim 4, wherein: the 4 conductors of the monitoring core conductor are all formed by twisting 6 tinned copper wires; the nylon rope is made of 3/5/210D nylon wires, namely each nylon rope is formed by twisting 5 210D nylon wires and then twisting 3 nylon wires to form the nylon rope.
6. The coiled towing cable for above ground mining engineering according to claim 4, wherein: and coating talcum powder on the outer surface of the monitoring wire core.
7. The coiled towing cable for above ground mining engineering according to claim 4, wherein: the monitoring wire core insulating layer is made by continuously vulcanizing ethylene propylene rubber with the hardness of 60A-80A.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022009973.5U CN212587239U (en) | 2020-09-14 | 2020-09-14 | Winding dragging cable for underground mining engineering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022009973.5U CN212587239U (en) | 2020-09-14 | 2020-09-14 | Winding dragging cable for underground mining engineering |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212587239U true CN212587239U (en) | 2021-02-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022009973.5U Active CN212587239U (en) | 2020-09-14 | 2020-09-14 | Winding dragging cable for underground mining engineering |
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| Country | Link |
|---|---|
| CN (1) | CN212587239U (en) |
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- 2020-09-14 CN CN202022009973.5U patent/CN212587239U/en active Active
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