CN202563978U - Conductor pre-twisting device - Google Patents
Conductor pre-twisting device Download PDFInfo
- Publication number
- CN202563978U CN202563978U CN 201220049795 CN201220049795U CN202563978U CN 202563978 U CN202563978 U CN 202563978U CN 201220049795 CN201220049795 CN 201220049795 CN 201220049795 U CN201220049795 U CN 201220049795U CN 202563978 U CN202563978 U CN 202563978U
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- Prior art keywords
- conductor
- frame
- pretwist
- cable
- drum
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Abstract
The present utility model discloses a conductor pre-twisting device, which comprises a frame stranding body and a pre-twisting rack, wherein a plurality of conductor wire coils are arranged on the frame stranding body, with the axis of the conductor wire coil being perpendicular to that of the frame stranding body, a compacting die is arranged on the pre-twisting rack, the frame stranding body and the pre-twisting rack rotate around their respective axes, respectively, with the rotation speed of the frame stranding body being larger than that of the pre-twisting rack, and conductor wires led out from the plurality of conductor wire coils are compacted by the compacting die together and then extend out. The present utility model thoroughly eliminates the phenomenon of cracking of cable insulation layer due to stress, and further ensures the process quality during cable manufacture, thus providing reliable quality guarantee for subsequent procedure.
Description
Technical field
The utility model relates to the employed conductor pre twist of the stranded stranding production method of a kind of pretwist conductor.
Background technology
Fan-shaped or watt stranded employing of shape conductor in existing heavy in section be conventional stranded mode, generally be applicable to four add one or three add two five-core cable with etc. the quad core stranding of four-core or three-plus-one.Company is in the insulated wire cores of carrying out special-shaped conductor during at stranding; Adopt disc type cabler, cage cabler etc. mostly; Owing to will guarantee the rounding property of cable, to guarantee that in the stranding process wedge angle summit fan-shaped or watt shape core aims at the center of cable all the time, adopt not back twist formula stranding more.Be cable when advancing according to linear velocity, also must rotate, to guarantee the rounding property of five-core cable or quad stranding with cable center.This technology still is feasible for the stranding of low pressure polyvinyl chloride insulation power cable.But the electric cable with large cross-section stranding for low-voltage crosslinked polyethylene insulation just problem occurred.
Major defect is that crosslinked polyetylene insulated electric cable with large cross-section is being cabled to last tens meters; Cable the serious quality problems that the low-voltage crosslinked cable insulating barrier of big specification splits owing to twisting force causes insulating barrier to rise also can occur sometimes because crosslinked polyetylene insulated stress is prone to produce the serious distortion phenomenon.If find that cable serious distortion or insulation are risen and split phenomenon that influence is more serious in that the user is on-the-spot.
The utility model content
The utility model technical problem to be solved provides a kind of conductor pre twist; Thoroughly eliminated the cable insulation fracture phenomena that causes owing to stress; Further guaranteed the procedure quality when cable is produced, for the production of later process provides reliable quality assurance.
For solving the problems of the technologies described above; The utility model adopts following technical scheme: the conductor pre twist; Comprise frame strand body, pretwist frame, said frame strand body is provided with the plurality of conductors drum, the axis normal of the axis of said conductor drum and said frame strand body; Said pretwist frame is provided with and presses mould; Said frame strand body and said pretwist frame are the center rotation with separately axis respectively, and the rotating speed of said frame strand body is greater than the rotating speed of said pretwist frame, and the conductor lines that said plurality of conductors drum is drawn passes after mould presses via said pressing in the lump.
As preferably; Also comprise final drive shaft, first belt drive unit and second belt drive unit; Said first belt drive unit comprises first driving wheel and first driven pulley; The output shaft of said first driven pulley connects a gearbox, drives said frame strand body by said gearbox, and said second belt drive unit comprises second driving wheel and second driven pulley; The output shaft of said second driven pulley drives said pretwist frame, and said first driving wheel and said second driving wheel are located on the said final drive shaft.
As preferably, said plurality of conductors drum is divided at least four groups, and every group of conductor drum comprises at least one conductor drum.
The utility model has thoroughly been eliminated the cable insulation fracture phenomena that causes owing to stress owing to adopted technique scheme, and the procedure quality when further having guaranteed cable production is for the production of later process provides reliable quality assurance.
Description of drawings
Fig. 1 is the structural representation of the utility model conductor pre twist
Fig. 2 is the cross sectional representation of the fan-shaped core behind the extruded insulation layer
Fig. 3 is the structural representation that is twisted into cable device
Fig. 4 is the cross sectional representation according to the cable of the stranded stranding production method production of pretwist conductor
Embodiment
The stranded stranding production method of pretwist conductor; Earlier plurality of conductors core (single line core) being reversed according to laying up pitch in advance is twisted into fan-shaped or watt shape core; Extruded insulation layer outside fan-shaped or watt shape core again; Again the fan-shaped or watt shape core stranding behind the extruded insulation layer is twisted into cable conductor, outside cable conductor, extrudes oversheath at last.
Conductor adopts pretwist technology; When producing the fan-shaped of milliken conductor or watt shape cable core; Can smoothly fan-shaped or a watt shape cable core be closed up during for stranding is the cable of a rounding, and eliminates cable core and press the stress that produces because of the stranded extension of conductor in the process, cable core is being pressed in the process of moulding; Carry out pretwist through the cable core of pretwist mould bases after to moulding; Make cable core when forming a fixing pitch, eliminate stranded extension and the stress that produces, this pitch of the stranded formation of conductor is to utilize the pretwist mould bases and the speed discrepancy of strand body to realize.
When large size conductor is stranded, in advance conductor is reversed according to laying up pitch.When extruded insulation layer outside the pretwist conductor again, this allotype insulation core stranding, do not have torsional deflection, can guarantee the quality of the special-shaped crosslinked cable in stranding heavy in section like this.Reduced the waste of drive section and ending segment simultaneously, cut lengths is controlled more easily.
Adopt the good insulated wire cores stranding of pretwist, just special-shaped conductor carries out pretwist to conductor, the pitch basically identical of the pitch of pretwist and stranding earlier when carrying out stranded pressing.Press the moulding conductor extrusion molding that insulate again behind the pretwist, insulated wire cores has spirality, when stranding, just can adopt back twist formula stranding; During this stranding allotype insulation core; Do not have torsional deflection, that is to say, in the stranding process; Cable no longer produces distorting stress, when principle has solved the cable stranding because the quality problems that insulation stress causes.
Further describe below in conjunction with the embodiment of accompanying drawing employed equipment in the stranded stranding production method of above-mentioned pretwist conductor.
Shown in Figure 1 is the utility model conductor pre twist; Comprise frame strand body 1, pretwist frame 2; Said frame strand body 1 is provided with plurality of conductors drum 3; The axis normal of the axis of said conductor drum 3 and said frame strand body 1, said pretwist frame 2 is provided with and presses mould 4, and said frame strand body 1 and said pretwist frame 2 are the center rotation with separately axis respectively; The rotating speed of said frame strand body 1 is greater than the rotating speed of said pretwist frame 2, and the conductor lines 5 that said plurality of conductors drum 3 is drawn passes after mould 4 presses via said pressing in the lump.Said plurality of conductors drum 3 is divided at least four groups, and every group of conductor drum comprises at least one conductor drum 3.
The drive system of this conductor pre twist comprises final drive shaft 6, first belt drive unit and second belt drive unit; Said first belt drive unit comprises first driving wheel 7 and first driven pulley 8; The output shaft of said first driven pulley 8 connects a gearbox 9; Drive said frame strand body 1 by said gearbox 9; Said second belt drive unit comprises second driving wheel 10 and second driven pulley 11, and the output shaft of said second driven pulley 11 drives said pretwist frame 2, and said first driving wheel 7 is located on the said final drive shaft 6 with said second driving wheel 10.
Conductor lines behind this conductor pre twist of process is reversed and is twisted into fan-shaped core 12, and the cross section behind the outer extruded insulation layer 13 of fan-shaped core is as shown in Figure 2.As shown in Figure 3 being twisted in the cable device, the fan-shaped core behind the extruded insulation layer is drawn by the draw drum on the active rotation pay off rack 14, passes distributor plate 15 backs and is twisted into cable conductor through stranding mould 16.The cross section that cable core extrudes behind the oversheath 17 is as shown in Figure 4.
Owing to adopted the stranded stranding production method of heavy in section pretwist conductor, guaranteed the stranding quality of the special-shaped crosslinked cable in heavy in section.Reduced the waste of drive section and ending segment simultaneously, cut lengths is controlled more easily.If the two ends of every dish electric cable with large cross-section amputate 15 meters; If produced two dishes in one day; Will waste the 30m cable in one day so, will waste the 900m cable in one month, will waste the cable of about 10km in 1 year; This big specification cable is pressed 600 yuan of calculating for every meter, will waste about 6,000,000 yuan cable cost in 1 year.Adopt pretwist insulated wire cores stranding, not only improved product quality, also reduced cable cost.
Claims (3)
1. conductor pre twist; It is characterized in that: comprise frame strand body (1), pretwist frame (2); Said frame strand body (1) is provided with plurality of conductors drum (3); The axis normal of the axis of said conductor drum (3) and said frame strand body (1), said pretwist frame (2) is provided with and presses mould (4), and said frame strand body (1) and said pretwist frame (2) are that the center rotates with separately axis respectively; The rotating speed of said frame strand body (1) is greater than the rotating speed of said pretwist frame (2), and the conductor lines (5) that said plurality of conductors drum (3) is drawn passes after mould (4) presses via said pressing in the lump.
2. conductor pre twist according to claim 1; It is characterized in that: also comprise final drive shaft (6), first belt drive unit and second belt drive unit; Said first belt drive unit comprises first driving wheel (7) and first driven pulley (8); The output shaft of said first driven pulley (8) connects a gearbox (9), drives said frame strand body (1) by said gearbox (9), and said second belt drive unit comprises second driving wheel (10) and second driven pulley (11); The output shaft of said second driven pulley (11) drives said pretwist frame (2), and said first driving wheel (7) and said second driving wheel (10) are located on the said final drive shaft (6).
3. conductor pre twist according to claim 1, it is characterized in that: said plurality of conductors drum (3) is divided at least four groups, and every group of conductor drum comprises at least one conductor drum (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220049795 CN202563978U (en) | 2012-02-16 | 2012-02-16 | Conductor pre-twisting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220049795 CN202563978U (en) | 2012-02-16 | 2012-02-16 | Conductor pre-twisting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202563978U true CN202563978U (en) | 2012-11-28 |
Family
ID=47213606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220049795 Withdrawn - After Issue CN202563978U (en) | 2012-02-16 | 2012-02-16 | Conductor pre-twisting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202563978U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102568707A (en) * | 2012-02-16 | 2012-07-11 | 浙江晨光电缆股份有限公司 | Production method for stranding pre-twisted conductor into cable and conductor pre-twisting device |
-
2012
- 2012-02-16 CN CN 201220049795 patent/CN202563978U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102568707A (en) * | 2012-02-16 | 2012-07-11 | 浙江晨光电缆股份有限公司 | Production method for stranding pre-twisted conductor into cable and conductor pre-twisting device |
| CN102568707B (en) * | 2012-02-16 | 2013-08-28 | 浙江晨光电缆股份有限公司 | Production method for stranding pre-twisted conductor into cable and conductor pre-twisting device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20121128 Effective date of abandoning: 20130828 |
|
| RGAV | Abandon patent right to avoid regrant |