CN115602390A - Photoelectric composite cable special for coal mining machine and production process - Google Patents
Photoelectric composite cable special for coal mining machine and production process Download PDFInfo
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- CN115602390A CN115602390A CN202211552828.9A CN202211552828A CN115602390A CN 115602390 A CN115602390 A CN 115602390A CN 202211552828 A CN202211552828 A CN 202211552828A CN 115602390 A CN115602390 A CN 115602390A
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- coal mining
- mining machine
- composite cable
- photoelectric composite
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
- H01B13/26—Sheathing; Armouring; Screening; Applying other protective layers by winding, braiding or longitudinal lapping
- H01B13/2606—Sheathing; Armouring; Screening; Applying other protective layers by winding, braiding or longitudinal lapping by braiding
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/443—Protective covering
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B11/00—Communication cables or conductors
- H01B11/02—Cables with twisted pairs or quads
- H01B11/06—Cables with twisted pairs or quads with means for reducing effects of electromagnetic or electrostatic disturbances, e.g. screens
- H01B11/10—Screens specially adapted for reducing interference from external sources
- H01B11/1033—Screens specially adapted for reducing interference from external sources composed of a wire-braided conductor
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B11/00—Communication cables or conductors
- H01B11/22—Cables including at least one electrical conductor together with optical fibres
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/02—Stranding-up
- H01B13/0207—Details; Auxiliary devices
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
- H01B13/24—Sheathing; Armouring; Screening; Applying other protective layers by extrusion
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/184—Sheaths comprising grooves, ribs or other projections
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/005—Power cables including optical transmission elements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/02—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
- H01B9/024—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients composed of braided metal wire
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
Abstract
The application provides a special photoelectric composite cable for a coal mining machine and a production process, and belongs to the field of composite cables. The production process of the special photoelectric composite cable for the coal mining machine comprises the steps of braiding a cable core shielding layer, braiding a control wire harness shielding layer, coating optical fibers, stranding and extruding a sheath. In the optical fiber coating step, a semi-conductive layer is extruded outside the optical fiber to form a coated optical fiber, the outer surface of the semi-conductive layer is provided with a plurality of spiral edges, and the number of the spiral edges and the spiral pitch are preset values. In the stranded wire cabling step, circumferentially stranding the control wire bundle and each shielding wire core around the coated optical fiber to prepare a stranded bundle; in the twisting process, each helical edge is respectively filled in each twisting gap between the shielding wire core and the shielding wire harness. The photoelectric composite cable special for the coal mining machine is manufactured by adopting the production process of the photoelectric composite cable special for the coal mining machine. The condition that the semi-conducting layer is locally thin is reduced, and the service life of the photoelectric composite cable special for the coal mining machine is prolonged.
Description
Technical Field
The application belongs to the technical field of composite cables, and particularly relates to a special photoelectric composite cable for a coal mining machine and a production process.
Background
Coal mining machines are generally operated underground, powered and controlled by a cable. A power wire core for transmitting electric power, a control wire core for transmitting electric control signals and an optical fiber for transmitting optical control signals are generally arranged in a cable of the coal mining machine; moreover, in order to protect the optical fiber, the optical fiber is generally arranged at the center, and other power wire cores and control wire cores are stranded around the optical fiber; meanwhile, the periphery of the optical fiber is filled with a semi-conductive material, so that the anti-interference capability of the control wire core is improved on one hand; on the other hand, the pressure of the power wire core and the power wire core to the optical fiber can be buffered.
In the production of the traditional coal mining machine cable, a semi-conducting layer is directly extruded outside the optical fiber, and then the power wire core and the control wire core are stranded around the optical fiber, so that the semi-conducting layer deforms under the stranding pressure, and the stranding gap between the optical fiber and the power wire core and the control wire core is filled. By adopting the process, on one hand, when the semi-conducting layer is extruded by the power wire core and the control wire core, the semi-conducting layer is deformed greatly and uncontrollably, and the local thickness is easy to be thinned, even the situation is not met with the requirement; on the other hand, certain internal stress can remain among the optical fibers, the semi-conducting layer, the power wire core and the control wire core, and when the coal mining machine cable is frequently bent and dragged underground along with the coal mining machine, the coal mining machine cable is subjected to various mechanical forces such as stretching, bending, twisting and extruding, the internal stress can cause the breakage of the fragile optical fibers, and the service life of the coal mining machine cable is shortened. However, if the strand tightness is reduced in order to reduce the internal stress, the strand gap may not be sufficiently filled with the semiconductive layer, and partial discharge may be caused, which is also a concern.
Disclosure of Invention
In view of this, the embodiment of the present application provides a special photoelectric composite cable for a coal mining machine and a production process thereof, so as to solve the technical problem in the prior art that internal stress remains among an optical fiber, a semi-conductive layer, a power wire core and a control wire core in a cable for a coal mining machine.
In order to achieve the purpose, the technical scheme adopted by the application is as follows:
on the one hand, the special photoelectric composite cable production process for the coal mining machine is provided, and comprises the following steps:
weaving a core shielding layer: respectively weaving metal shielding layers on the outer surfaces of more than two power wire cores to manufacture shielding wire cores;
controlling the weaving of the wire harness shielding layer: twisting more than two control wire cores into a control wire harness, and weaving a metal shielding layer on the outer surface of the control wire harness to prepare a shielding wire harness;
optical fiber coating: extruding and molding a semi-conductive layer outside the optical fiber to prepare a coated optical fiber, wherein the outer surface of the semi-conductive layer is provided with a plurality of spiral edges, and the number and the spiral pitch of the spiral edges are preset values;
stranding and cabling: circumferentially stranding the control wire harness and each shielding wire core around the coated optical fiber to form a stranded bundle; in the twisting process, each helical edge is respectively filled into each twisting gap between the shielding wire core and the shielding wire harness;
extruding and wrapping a sheath: manufacturing a sheath layer outside the stranded beam to manufacture the photoelectric composite cable special for the coal mining machine;
the sequence of the core shielding layer weaving step, the control harness shielding layer weaving step and the optical fiber coating step is not limited.
In certain embodiments, after the coated optical fiber is formed through the optical fiber coating step, the temperature of the spiral rib is maintained at 40 ℃ to 50 ℃ until the stranding step.
In some embodiments, after the stranded bundle is formed through the stranding step, the temperature of the stranded bundle is maintained at 40 ℃ to 50 ℃ and the stranded bundle is naturally cooled after 1 minute.
In some embodiments, in the optical fiber coating step, an extruder is used to extrude and mold the semi-conductive layer outside the optical fiber, and a rotating die sleeve with an angular extrusion opening is used as a head of the extruder, and is driven to rotate by the control wire harness and the shielding wire core in the stranding step.
In certain embodiments, the head of the extruder is provided with a synchronization mechanism comprising:
the rotating sleeve is rotatably sleeved on the machine head of the extruder and drives the rotating die sleeve;
the clamping wheel set is slidably clamped on two sides of the control wire harness or the shielding wire core; and
the synchronous swing rod is connected with the rotary sleeve and between the clamping wheel sets, so that the clamping wheel sets are in the control wiring harness or the shielding wire core is driven in the circumferential direction and driven in the circumferential direction to pass through the rotary sleeve, two ends of the synchronous swing rod are respectively connected with the rotary sleeve and the clamping wheel sets in a rotating mode, and the clamping wheel sets are close to or far away from the machine head through free swinging of the synchronous swing rod.
In some embodiments, an included angle α between the synchronous oscillating bar and the rotary die sleeve is an obtuse angle.
In some embodiments, the rotary die sleeve is provided with a plurality of radial rods, the rotary sleeve is provided with a plurality of clamping rods along the axial direction of the rotary die sleeve, and one end of each clamping rod is clamped with the free end of each radial rod, so that the rotary sleeve drives the rotary die sleeve.
In some embodiments, in the step of braiding the control harness shielding layer, during the process of twisting more than two control wire cores into the control harness, each control wire core is circumferentially twisted around the semi-conductive adhesive tape to form the control harness.
In certain embodiments, the step of extruding the jacket comprises:
extruding an inner sheath: extruding and forming an inner sheath outside the twisted bundle to manufacture an inner sheath wire harness;
weaving a reinforcing layer: weaving a reinforcing layer outside the inner sheath wire harness to manufacture a reinforcing wire harness;
extruding and wrapping the outer sheath: and extruding and molding an outer sheath outside the reinforcing wire harness to prepare the special photoelectric composite cable for the coal mining machine.
The special photoelectric composite cable production process for the coal mining machine, provided by the embodiment of the application, has the beneficial effects that: compared with the prior art, according to the production process of the special photoelectric composite cable for the coal mining machine, the spiral edges are arranged outside the semi-conductive layer of the optical fiber, and then the spiral edges are respectively filled into the twisting gaps between the shielding wire cores and the shielding wire harnesses in the circumferential twisting process of the control wire harness and the shielding wire cores, so that on one hand, the spiral edges fill the twisting gaps, the main body of the semi-conductive layer is enabled to be deformed less and to be controlled more easily, and the situation that the local thickness is thinner is reduced; on the other hand, internal stress among the optical fiber, the semi-conducting layer, the power wire core and the control wire core is reduced or even eliminated, so that the service life of the photoelectric composite cable special for the coal mining machine is prolonged.
Another technical scheme that this application adopted is, provides a special photoelectricity composite cable of coal-winning machine, includes: the photoelectric composite cable special for the coal mining machine is manufactured by adopting the production process of any one of the photoelectric composite cables special for the coal mining machine.
The special photoelectric composite cable for the coal mining machine has the beneficial effects that: compared with the prior art, according to the special photoelectric composite cable for the coal mining machine, by adopting the production process of the special photoelectric composite cable for the coal mining machine, the spiral edges are arranged outside the semi-conductive layer of the optical fiber, and then the spiral edges are respectively filled into the twisting gaps between the shielding wire cores and the shielding wire harnesses in the circumferential twisting process of the control wire harness and the shielding wire cores, so that on one hand, the spiral edges fill the twisting gaps, the main body of the semi-conductive layer is deformed slightly and is easier to control, and the situation that the local thickness is thinner is reduced; on the other hand, internal stress among the optical fiber, the semi-conducting layer, the power wire core and the control wire core is reduced or even eliminated, so that the service life of the photoelectric composite cable special for the coal mining machine is prolonged.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required to be used in the embodiments or the prior art description will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings may be obtained according to these drawings without inventive labor.
Fig. 1 is a flowchart of a production process of a special photoelectric composite cable for a coal mining machine provided in an embodiment of the present application;
fig. 2 is a flowchart of a production process of a special photoelectric composite cable for a coal mining machine according to another embodiment of the present application;
fig. 3 is a schematic structural diagram of an extruder used in an optical fiber coating step of a production process of a special photoelectric composite cable for a coal mining machine according to an embodiment of the present application;
FIG. 4 is an enlarged view of the rotary sleeve and the rotary die sleeve in FIG. 3;
FIG. 5 is a schematic view showing the internal structure of the rotary die case of FIG. 4;
FIG. 6 is a front view of the rotary die sleeve of FIG. 4;
fig. 7 is a schematic structural diagram of a special photoelectric composite cable for a coal mining machine, which is produced by using the special photoelectric composite cable for a coal mining machine provided in the application embodiment.
Wherein, in the figures, the various reference numbers:
1-an extruder; 11-rotating a die sleeve; 111-radial rod; 112-extrusion port, 12-rotary sleeve; 121-clamping rod; 2-synchronous oscillating bar; 3-clamping a wheel set; 31-a pulley; 4-a power wire core; 5-shielding the wire harness; 51-control wire core; 52-a semi-conductive adhesive tape; 6-an optical fiber; 61-a semiconducting layer; 62-a helical edge; 7-an inner sheath; 8-a reinforcing layer; 9-an outer sheath; 10-twisted bundle.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the application and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be constructed in operation as a limitation of the application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "plurality" or "a plurality" means two or more unless specifically limited otherwise.
Referring to fig. 1 to fig. 7, a process for producing a special photoelectric composite cable for a coal mining machine according to an embodiment of the present application will be described. A production process of a special photoelectric composite cable for a coal mining machine comprises the following steps:
weaving a core shielding layer: respectively weaving a metal shielding layer on the outer surfaces of more than two power wire cores 4 to manufacture shielding wire cores;
controlling the weaving of the wire harness shielding layer: twisting more than two control wire cores 51 into a control wire harness, and weaving a metal shielding layer on the outer surface of the control wire harness to prepare a shielding wire harness 5;
and (3) coating the optical fiber 6: extruding a semiconductive layer 61 outside the optical fiber 6 to form a coated optical fiber 6, wherein the semiconductive layer 61 has a plurality of spiral ribs 62 on the outer surface thereof, and the number and the spiral pitch of the spiral ribs 62 are predetermined values;
stranding and cabling: circumferentially twisting the control wire harness and each shielding wire core around the covering optical fiber 6 to prepare a twisted bundle 10; during twisting, the helical ribs 62 are respectively filled in the twisting gaps between the shielding wire core and the shielding wire harness 5.
Extruding a sheath: manufacturing a sheath layer outside the stranded beam 10 to manufacture the photoelectric composite cable special for the coal mining machine;
the sequence of the core shielding layer weaving step, the control harness shielding layer weaving step and the optical fiber 6 coating step is not limited.
Compared with the prior art, according to the production process of the special photoelectric composite cable for the coal mining machine, the spiral ribs 62 are arranged outside the semi-conducting layer 61 of the optical fiber 6, and then the spiral ribs 62 are respectively filled in each twisting gap between the shielding wire core and the shielding wire harness 5 in the circumferential twisting process of the control wire harness and each shielding wire core, on one hand, the spiral ribs 62 fill the twisting gaps, so that the main body part of the semi-conducting layer 61 is slightly deformed and is easier to control, and the situation that the local thickness is thin is reduced; on the other hand, the internal stress among the optical fiber 6, the semi-conductive layer 61, the power wire core 4 and the control wire core 51 is reduced or even eliminated, so that the service life of the photoelectric composite cable special for the coal mining machine is prolonged.
In a specific implementation, in the step of braiding the core shielding layer, a spindle type braiding machine or a rotary disc type braiding machine can be adopted, and copper wires are braided on the outer surfaces of the power wire cores 4 to form the metal shielding layer.
In the step of weaving the shielding layer of the control wire harness, a proper number of control wire cores 51 are selected as required, and a cable stranding machine is adopted to strand the control wire harness; and then, a spindle type knitting machine or a rotating disc type knitting machine can be adopted to knit the copper wires on the outer surface of the control wire harness to form the metal shielding layer.
In the optical fiber 6 coating step, the semi-conductive layer 61 may be extruded outside the optical fiber 6 by using the extruder 1, and the spiral rib 62 may be processed by the shape of the extrusion port 112 of the outer jacket on the head of the extruder 1 and the rotation of the outer jacket. The predetermined values of the number of the spiral ribs 62 and the spiral pitch are the same as those of the number of the stranding gaps between the shielding core and the shielding strands 5 in the produced cable. The semiconductive layer 61 can be made of any known material, such as a semiconductive polyolefin composition for cable shielding.
In the stranded wire stranding step, a cable stranding machine can be adopted to strand the stranded wires, and the control wire harness and each shielding wire core are circumferentially stranded around the cladding optical fiber 6. By controlling the twisting pitch, the shielding wire core and the shielding wire harness 5 are respectively embedded between the spiral ribs 62 covering the outer surface of the optical fiber 6, and then each spiral rib 62 is respectively filled in each twisting gap between the shielding wire core and the shielding wire harness 5.
In the step of extruding the sheath, the extruder 1 can be adopted to extrude the insulating layer outside the twisted bundle 10 to serve as the sheath, and the fiber braided layer can be added in the middle of the sheath to improve the tensile strength.
Referring to fig. 1 to 3, as an embodiment of the process for producing the photoelectric composite cable dedicated for the coal mining machine provided by the present application, after the coated optical fiber 6 is formed through the optical fiber 6 coating step, the temperature of the spiral rib 62 is maintained at 40 ℃ to 50 ℃ until the stranding step.
In this embodiment, the temperature of the semiconductive layer 61 is maintained at 40 to 50 ℃ to keep the semiconductive layer 61 in a soft state, so that when the strand stranding process is performed, after the helical ribs 62 are respectively filled in the strand gaps, the helical ribs 62 can further deform to be more consistent with the strand gaps, and internal stress is eliminated.
In particular implementations, the temperature of the helical rib 62 may be controlled by maintaining the temperature of the local environment at 40 ℃ to 50 ℃; a heating plate may be added to the rear of the extruder 1 in the step of coating the optical fiber 6 to control the temperature of the spiral rib 62. Moreover, since the spiral rib 62 protrudes from the outer surface of the semiconductive layer 61 and has a large surface area, the heating plate is used to heat the spiral rib 62, so that the temperature of the spiral rib 62 is higher relative to the temperature of the main body of the semiconductive layer 61, and the spiral rib 62 is softer, so that the main deformation of the spiral rib 62 can be controlled while the semiconductive layer 61 is deformed little or even not during the stranding process.
Referring to fig. 1 to 3, as an embodiment of the process for producing a photoelectric composite cable dedicated for a coal mining machine provided by the present application, after a stranded bundle 10 is produced through a stranding process, the temperature of the stranded bundle 10 is maintained at 40 ℃ to 50 ℃, and the stranded bundle is naturally cooled after 1 minute.
In this embodiment, the spiral ribs 62 can be completely engaged with the respective twisting gaps, the temperature of the twisted bundle 10 is maintained at 40 ℃ to 50 ℃ for 3 minutes, and then the twisted bundle is naturally cooled at room temperature.
In particular implementations, the temperature of the twisted bundle 10 can be controlled by maintaining the temperature of the local environment at 40-50 ℃; a heating plate may also be added behind the cable stranding machine in the stranding process to control the temperature of the stranded bundle 10.
Referring to fig. 3 to 6, as a specific embodiment of the production process of the special photoelectric composite cable for the coal mining machine provided by the present application, in the step of coating the optical fiber 6, the extruder 1 is used to extrude and form the semi-conductive layer 61 outside the optical fiber 6, the head of the extruder 1 is provided with the rotary die sleeve 11 with the angular extrusion port 112, and the rotary die sleeve 11 is driven to rotate by the control wire harness and the shielding wire core in the step of stranding.
In this embodiment, the spiral rib 62 can be formed by arranging the extrusion opening 112 of the rotary die case 11 to have an angular shape so that the extruded semiconductive layer 61 has a plurality of angular lines, and by rotating the rotary die case 11. The number of corners of the extrusion port 112 of the rotary die sleeve 11 is the number of the spiral ribs 62. The rotary die sleeve 11 is driven to rotate by the control wire harness and the shielding wire core in the stranding step, so that the pitch of the manufactured spiral edge 62 is the same as that of the stranding gap.
During concrete implementation, the front end of the extruder 1 head is conical, and the rear end of the rotary die sleeve 11 is a bell mouth, so that the rear end of the rotary die sleeve 11 can be accurately buckled at the front end of the extruder 1 head, and when the semi-conductive layer 61 is extruded and molded, the forward extruded material is not easy to enter a gap between the rotary die sleeve 11 and the extruder 1 head. The extrusion port 112 at the front end of the rotary die case 11 has an angular shape having four corners. Four arc edges of the extrusion opening 112 are arc-shaped, and the radius of the arc edges is smaller than that of the corresponding power wire core 4 or the corresponding control wire harness, so that the arc radius between the adjacent spiral ribs 62 on the extruded semi-conductive layer 61 is slightly smaller than that of the corresponding power wire core 4 or the corresponding control wire harness, and when the power wire core 4 and the control wire harness are embedded between the corresponding spiral ribs 62, the spiral ribs 62 can better enter the corresponding twisting gaps.
Referring to fig. 3 to 5, as a specific embodiment of the production process of the photoelectric composite cable dedicated to the coal mining machine provided in the present application, a head of the extruder 1 is provided with a synchronization mechanism, and the synchronization mechanism includes: a rotating sleeve 12, a clamping wheel set 3 and a synchronous swing rod 2.
The rotating sleeve 12 is rotatably sleeved on a machine head of the extruder 1 and is mainly used for mounting the synchronous oscillating bar 2 and driving the rotating die sleeve 11 under the driving of the synchronous oscillating bar 2.
Centre gripping wheelset 3 slides and presss from both sides and locate the both sides of control pencil or shielding sinle silk, make control pencil or shielding sinle silk can be smooth and easy slide from centre gripping wheelset 3 and pass, do not influence the transposition of control pencil or shielding sinle silk, and the circumferential direction when control pencil or shielding sinle silk transposition can drive 3 circumferential direction of centre gripping wheelset again, thereby make centre gripping wheelset 3 can transmit rotatory die sleeve 11 through synchronous pendulum rod 2 and commentaries on classics cover 12 with rotating, and then make rotatory die sleeve 11 along with the synchronous circumferential direction of control pencil and shielding sinle silk, make shielding sinle silk and shielding sinle silk 5 imbed respectively between the spiral arris 62 of cladding optic fibre 6 surface, each spiral arris 62 is filled respectively in each transposition clearance between shielding sinle silk and the shielding sinle silk 5.
In a specific implementation, the rotating sleeve 12 can be sleeved on the head of the extruder 1 through two groups of ball bearings. The clamping wheel set 3 may be composed of one set or two sets of opposite pulleys 31, and each set of pulleys 31 clamps the control wire harness or the shielding wire core therebetween. One end of the synchronous swing rod 2 is hinged on the rotating sleeve 12, so that the synchronous swing rod 2 can swing freely in an axial plane of a machine head of the extruder 1, and the clamping wheel set 3 can freely approach or leave the machine head; the other end of the synchronous swing rod 2 is hinged with the clamping wheel set 3, so that the clamping wheel set 3 is not limited by the synchronous swing rod 2 in angle when approaching or leaving the machine head.
Referring to fig. 3, as a specific embodiment of the production process of the special photoelectric composite cable for the coal mining machine provided by the present application, an included angle α between the direction of the synchronous swing rod 2 and the direction of the rotary die sleeve 11 is an obtuse angle.
In this embodiment, the coated optical fiber 6, the shielding core and the shielding wire harness 5 are twisted in front of the rotary die sleeve 11, an included angle α between the synchronous swing rod 2 and the rotary die sleeve 11 is an obtuse angle, and when the clamping wheel set 3 is close to the head of the extruder 1, the twisted part of the coated optical fiber 6, the shielding core and the shielding wire harness 5 is far away.
Referring to fig. 3 to 5, as a specific embodiment of the production process of the special photoelectric composite cable for the coal mining machine provided by the present application, the rotary die sleeve 11 is provided with a plurality of radial rods 111, the rotary sleeve 12 is provided with a plurality of clamping rods 121 along the axial direction of the rotary die sleeve 11, and one end of each clamping rod 121 is clamped with a free end of each radial rod 111, so that the rotary sleeve 12 drives the rotary die sleeve 11.
During concrete implementation, four radial rods 111 are uniformly arranged around the rotary die sleeve 11, four forward clamping rods 121 are uniformly arranged around the rotary die sleeve 12, and the front ends of the clamping rods 121 are clamped with the free ends of the radial rods 111 to realize that the rotary die sleeve 11 is driven by the rotary die sleeve 12 to rotate.
Referring to fig. 1, fig. 2 and fig. 7, as a specific embodiment of the production process of the special photoelectric composite cable for the coal mining machine provided by the present application, in the step of braiding the shielding layer of the control harness, in the process of twisting more than two control wire cores 51 into the control harness, each control wire core 51 is twisted circumferentially around the semi-conductive adhesive tape 52 to form the control harness.
In this embodiment, the semi-conductive adhesive tape 52 can fill the gap between the control harnesses, and can also improve the anti-interference capability of the control cable core 51.
In a specific implementation, more than two control wire cores 51 of the cable stranding machine can be stranded around the semi-conductive rubber strip 52 to form a control wire harness.
Referring to fig. 2 and 7, as a specific embodiment of the production process of the photoelectric composite cable special for the coal mining machine provided by the present application, the step of extruding the sheath includes:
extruding and coating the inner sheath 7: extruding and forming the inner sheath 7 outside the twisted bundle 10 to manufacture a wire harness of the inner sheath 7;
weaving the reinforcing layer 8: weaving a reinforcing layer 8 outside the inner sheath wire harness to manufacture a reinforcing wire harness;
extruding and wrapping the outer sheath 9: and extruding and molding the outer sheath 9 outside the reinforcing wire harness to manufacture the special photoelectric composite cable for the coal mining machine.
In the embodiment, the reinforcing layer 8 is woven between the inner and outer sheaths 9, so that the tensile strength of the cable is improved. In specific implementation, the reinforcing layer 8 can be formed by weaving only nonmetal fibers, or can be formed by weaving metal wires and nonmetal fibers, so that the shielding performance is improved. Both the inner sheath 7 and the outer sheath 9 may be made using an extruder 1.
Referring to fig. 1 to 7, an embodiment of the present application further provides a special photoelectric composite cable for a coal mining machine, where the special photoelectric composite cable for a coal mining machine includes: the photoelectric composite cable special for the coal mining machine is manufactured by adopting any one of the production processes of the photoelectric composite cable special for the coal mining machine.
Compared with the prior art, according to the special photoelectric composite cable for the coal mining machine, any one of the production processes of the special photoelectric composite cable for the coal mining machine is adopted, the spiral ribs 62 are arranged outside the semi-conducting layer 61 of the optical fiber 6, and then the spiral ribs 62 are respectively filled into each twisting gap between the shielding wire core and the shielding wire harness 5 in the circumferential twisting process of the control wire harness and each shielding wire core, so that on one hand, the spiral ribs 62 fill the twisting gaps, the main body of the semi-conducting layer 61 is slightly deformed and is easier to control, and the situation that the local part is thinner is reduced; on the other hand, the internal stress among the optical fiber 6, the semi-conductive layer 61, the power wire core 4 and the control wire core 51 is reduced or even eliminated, thereby improving the service life of the photoelectric composite cable special for the coal mining machine.
In the concrete implementation, the special photoelectric composite cable for the coal mining machine is manufactured by adopting any one of the production processes of the special photoelectric composite cable for the coal mining machine, and comprises three power wire cores 4, one control wire harness and one central optical fiber 6, wherein the control wire harness comprises six control wire cores 51.
The above description is only a preferred embodiment of the present application and should not be taken as limiting the present application, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. The production process of the special photoelectric composite cable for the coal mining machine is characterized by comprising the following steps:
weaving of a core shielding layer: respectively weaving metal shielding layers on the outer surfaces of more than two power wire cores to manufacture shielding wire cores;
controlling the weaving of the wire harness shielding layer: twisting more than two control wire cores into a control wire harness, and weaving a metal shielding layer on the outer surface of the control wire harness to prepare a shielding wire harness;
optical fiber coating: extruding and molding a semi-conductive layer outside the optical fiber to prepare a coated optical fiber, wherein the outer surface of the semi-conductive layer is provided with a plurality of spiral edges, and the number and the spiral pitch of the spiral edges are preset values;
stranding and cabling: circumferentially stranding the control wire harness and each shielding wire core around the coated optical fiber to prepare a stranded bundle; in the twisting process, each helical edge is respectively filled into each twisting gap between the shielding wire core and the shielding wire harness;
extruding a sheath: manufacturing a sheath layer outside the stranded beam to manufacture the photoelectric composite cable special for the coal mining machine;
the sequence of the core shielding layer weaving step, the control harness shielding layer weaving step and the optical fiber coating step is not limited.
2. The production process of the special photoelectric composite cable for the coal mining machine as claimed in claim 1, wherein after the coated optical fiber is formed through the optical fiber coating step, the temperature of the spiral rib is kept at 40 ℃ to 50 ℃ until the stranding step.
3. The production process of the special photoelectric composite cable for the coal mining machine as claimed in claim 1, wherein after the stranded bundle is manufactured through the stranded wire cabling step, the temperature of the stranded bundle is maintained at 40 ℃ to 50 ℃, and the stranded bundle is naturally cooled after 1 minute.
4. The process for producing the photoelectric composite cable special for the coal mining machine according to claim 1, wherein in the optical fiber coating step, an extruder is used for extruding and molding the semi-conductive layer outside the optical fiber, and a rotary die sleeve with an angular extrusion opening is used for a head of the extruder, and is driven to rotate by the control wire harness and the shielding wire core in the stranding step.
5. The production process of the special photoelectric composite cable for the coal mining machine according to claim 4, wherein a head of the extruder is provided with a synchronization mechanism, and the synchronization mechanism comprises:
the rotating sleeve is rotatably sleeved on the machine head of the extruder and drives the rotating die sleeve;
the clamping wheel set is slidably clamped on two sides of the control wire harness or the shielding wire core; and
the synchronous swing rod is connected with the rotary sleeve and between the clamping wheel sets, so that the clamping wheel sets are in the control wiring harness or the shielding wire core is driven in the circumferential direction and driven in the circumferential direction to pass through the rotary sleeve, two ends of the synchronous swing rod are respectively connected with the rotary sleeve and the clamping wheel sets in a rotating mode, and the clamping wheel sets are close to or far away from the machine head through free swinging of the synchronous swing rod.
6. The production process of the special photoelectric composite cable for the coal mining machine as claimed in claim 5, wherein an included angle α between the orientation of the synchronous swing rod and the orientation of the rotary die sleeve is an obtuse angle.
7. The production process of the special photoelectric composite cable for the coal mining machine as claimed in claim 5, wherein the rotary die sleeve is provided with a plurality of radial rods, the rotary sleeve is provided with a plurality of clamping rods along the axial direction of the rotary die sleeve, and one end of each clamping rod is clamped with the free end of each radial rod, so that the rotary sleeve drives the rotary die sleeve.
8. The production process of the special photoelectric composite cable for the coal mining machine according to claim 1, wherein in the weaving step of the control harness shielding layer, more than two control wire cores are twisted into the control harness, and each control wire core is circumferentially twisted around a semi-conductive adhesive tape to form the control harness.
9. The production process of the special photoelectric composite cable for the coal mining machine as claimed in claim 1, wherein the step of extruding the sheath comprises the following steps:
extruding and coating the inner sheath: extruding and forming an inner sheath outside the twisted bundle to manufacture an inner sheath wire harness;
weaving a reinforcing layer: weaving a reinforcing layer outside the inner sheath wire harness to manufacture a reinforcing wire harness;
extruding and wrapping the outer sheath: and extruding and molding an outer sheath outside the reinforcing wire harness to prepare the special photoelectric composite cable for the coal mining machine.
10. The special photoelectric composite cable for the coal mining machine is characterized by comprising: the cable is manufactured by adopting the production process of the special photoelectric composite cable for the coal mining machine according to any one of claims 1 to 9.
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| CN115602390B (en) | 2023-03-10 |
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Denomination of invention: Special photoelectric composite cable and production process for coal mining machines Effective date of registration: 20230727 Granted publication date: 20230310 Pledgee: Bank of China Limited Jinzhou Branch Pledgor: JIANYE CABLE GROUP Co.,Ltd. Registration number: Y2023980050081 |
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