CN109754953B

CN109754953B - Alternating working condition resistant power cable production device

Info

Publication number: CN109754953B
Application number: CN201910111828.7A
Authority: CN
Inventors: 刘海深; 刘海超; 刘虎; 陈明
Original assignee: Yichang Hongqi Zhongtai Cable Co ltd
Current assignee: Yichang Hongqi Zhongtai Cable Co ltd
Priority date: 2019-02-12
Filing date: 2019-02-12
Publication date: 2020-06-05
Anticipated expiration: 2039-02-12
Also published as: CN109754953A

Abstract

The invention provides a power cable production device capable of resisting alternating working conditions, which comprises a plurality of rotatable raw material frames and a winding device capable of rotating in multiple directions, wherein a container for containing lubricating materials is arranged below the raw material frames, the top of the container is provided with a plurality of wire inlets communicated with a hollow rotating shaft of the raw material frames, and the bottom of the container is provided with a second ceramic tube for a stranded wire core to pass through. Through adopting above scheme, can be at the raw materials silk of cable, the surface adhesion one deck lubricating layer of anaerobic copper wire promptly, the lubricating layer is high inflation graphite worm. By providing the container in the twisting step, the twisting of the raw material wires can cause fine flake graphite to be adsorbed between the raw material wires. The micro-friction between the anaerobic copper wires in the power cable under the alternating working condition is reduced, the service life of the power cable is greatly prolonged, and the fault-free working time of the equipment is prolonged.

Description

Alternating working condition resistant power cable production device

Technical Field

The invention relates to the field of cable production equipment, in particular to a power cable production device resistant to alternating working conditions.

Background

Under the alternating working condition, the service life of the cable is related to the deformation capacity of the material, and also related to micro friction between the materials, and in the application occasions requiring high alternating speed, the micro friction between the wire cores causes large abrasion. Thereby affecting the resistivity and electromagnetic shielding effect of the wire core. Chinese patent document CN105825915A describes a high temperature resistant flexible cable for an automatic submerged arc welding machine, in which a thin layer of talc powder is provided in the cable, so that micro-friction between wire cores can be reduced, and the service life of the cable under alternating working conditions can be improved. However, this solution is difficult to process, mainly to ensure a uniform thickness of the lubricating layer. And the residual talcum powder is easy to influence the quality of the next procedure.

Disclosure of Invention

The invention aims to solve the technical problem of providing a power cable production device capable of resisting alternating working conditions, which can reduce micro friction between copper wires of a cable, prolong the service life of the power cable under the alternating working conditions, improve the conductivity of the cable in a cable with a multi-core structure and reduce the resistivity.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows: the utility model provides a resistant alternation operating mode power cable apparatus for producing, but includes a plurality of rotatable raw material frame and a plurality of direction pivoted coiling mechanism, is equipped with the container that is used for holding lubricating material in a plurality of raw material frame below, and the top of container is equipped with a plurality ofly and the communicating inlet wire mouth of hollow rotating shaft of raw material frame, is equipped with the second porcelain tube that supplies the transposition sinle silk to pass through in the bottom of container.

In the preferred scheme, the hollow rotating shaft is vertically arranged at the bottom of the raw material rack, the hollow rotating shaft is rotatably connected with the top of the container, and the hollow rotating shaft is further connected with a driving device for driving rotation.

In a preferred embodiment, the raw material yarn package is rotatably supported on the raw material frame, and the rotation axis of the raw material yarn package is perpendicular to the axis of the hollow rotating shaft.

In the preferred scheme, the wire inlet is arranged at one end of the hollow rotating shaft facing the raw material rack, and the wire inlet is a horn-mouth-shaped ceramic nozzle;

the top of the container is provided with a first porcelain tube, and the wire inlet is communicated with the first porcelain tube.

In a preferred embodiment, a damper is provided between the rotational shaft of the raw material yarn package and the raw material stand.

In the preferred scheme, the container is connected with the graphite worm inlet, a filter screen is further arranged on the container, and a negative pressure suction port is formed in one side, far away from the inner cavity of the container, of the filter screen.

In the preferred scheme, the raw material frames are concentrically arranged at the top of the container in an array, hollow rotating shafts of the raw material frames are mutually connected through a transmission mechanism, and a raw material frame rotation driving device is connected with the hollow rotating shaft of one raw material frame through the transmission mechanism;

or each hollow rotating shaft is connected with an independent raw material rack rotation driving device.

In a preferred scheme, in the winding device, a finished product winding frame is rotatably connected with the rack through a rotating shaft, the finished product winding frame is connected with a winding frame rotation driving device, and a finished product package is arranged on the finished product winding frame and rotates around the axis of the rotating shaft as a circle center;

the finished product package is connected with a package rotation driving device for driving rotation;

the rotation axis of the finished product package is vertical to the axis of the rotating shaft.

In a preferred scheme, a lead device is further arranged on the upstream side of the winding device, and in the lead device, the swinging lead frame is connected with a lead cam shaft.

In a preferable scheme, a belt wrapping device is further arranged between the container and the winding device;

in the wrapping device, the wrapping roll is arranged on one side of the stranded wire core in a manner of reciprocating and rotating along the axial direction.

According to the alternating working condition resistant power cable production device, the scheme is adopted, a lubricating layer can be attached to the surface of a raw material wire of the cable, namely an oxygen-free copper wire, the lubricating layer adopted in the embodiment is high-expansion graphite worms, the high-expansion graphite worms are finished products after high-purity graphite flakes with the mesh number of more than 80 are intercalated, expanded, desulfurized, washed and dried, and the expansion volume multiple of the high-expansion graphite worms is more than 800 times. The high-expansion graphite worms have a good interlayer lubricating effect, and the high-expansion graphite worms are beneficial to improving the electron transfer rate among the anaerobic copper wires, and are beneficial to accommodating large current density under the condition of wire breakage under alternating working conditions, so that the overall resistivity of the cable is reduced, and the overloaded heat productivity is reduced. And the high-expansion graphite worms also have higher thermal conductivity, and the comprehensive performance is far better than that of the scheme adopting the talcum powder. By providing the container in the twisting step, the twisting of the raw material wires can cause fine flake graphite to be adsorbed between the raw material wires. The micro-friction between the anaerobic copper wires in the power cable under the alternating working condition is reduced, the service life of the power cable is greatly prolonged, and the fault-free working time of the equipment is prolonged. In the preferred scheme, the filter screen and the negative pressure suction opening that set up can produce the negative pressure to high inflation graphite worm raw materials, and the feeding of being convenient for avoids high inflation graphite worm to escape simultaneously. The arranged lead device can lead the twisted wire cores to be arranged in sequence on the finished product package. The band device that sets up can cover one deck polytetrafluoroethylene band outside the sinle silk after the transposition, further improves the wearability of sinle silk, also provides certain insulating effect. The material rack driving structure can drive a plurality of material racks to rotate by one motor so as to reduce energy consumption.

Drawings

The invention is further illustrated by the following examples in conjunction with the accompanying drawings:

fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic structural view of the container top driving the hollow rotating shaft of the raw material rack to rotate.

Fig. 3 is a schematic cross-sectional view of a power cable structure manufactured by the device of the invention.

In the figure: the cable comprises a control wire core 1, a lubricating layer 2, an insulating layer 3, a shielding belt 4, a metal mesh woven shielding layer 5, a rubber filling layer 6, a fireproof belt 7, a fiber woven layer 8, an outer sheath 9, a power wire core 10, a raw material wire package 100, a raw material rack 101, a wire inlet 102, a first ceramic tube 103, a container 104, a graphite worm inlet 105, a second ceramic tube 106, a filter screen 107, a negative pressure suction port 108, a twisted wire core 109, a tape winding 110, a damping rotating shaft 111, a damping sleeve 112, a deflector rod 113, a driving gear 114, a finished product winding rack 115, a finished product package 116, a package rotation driving device 117, a package rack rotation driving device 118, a rack 119, a transmission belt 120, a raw material rack rotation driving device 121, a lead cam shaft 122, a swinging lead rack 123, a hollow rotating shaft 124 and a.

Detailed Description

As shown in fig. 3, the cable structure prepared by the apparatus of the present invention is as follows: the cable comprises a plurality of control wire cores 1 and power wire cores 10, wherein an insulating layer 3 and a shielding layer are sequentially arranged outside the control wire cores 1; an insulating layer 3 and a shielding layer are sequentially arranged outside the power wire core 10; rubber filling layers 6 are filled among the control wire cores 1, among the power wire cores 10 and among the control wire cores 1 and the power wire cores 10;

and a fireproof belt 7, a fiber braiding layer 8 and an outer sheath 9 are sequentially arranged outside a cable assembly consisting of the control cable core 1 and the power cable core 10. The number of the control wire cores 1 is 2-8, and the number of the power wire cores 10 is 2, 3 or 4; the control wire core 1 is located in the middle, and the power wire core 10 is located around. The control cable cores 1 are arranged in a twisted pair mode, and a lubricating layer 2, an insulating layer 3, a shielding belt 4 and a metal net braided shielding layer 5 are sequentially arranged outside each control cable core 1. A lubricating layer 2 is arranged between the control wire core 1 and the insulating layer 3; the lubricating layer 2 is made of high-expansion graphite worms. A lubricating layer 2 is arranged between the power wire core 10 and the insulating layer 3; the lubricating layer 2 is made of high-expansion graphite worms.

The high-expansion graphite worms in the embodiment are finished products obtained by intercalating and expanding graphite flakes with the mesh number of more than 80, desulfurizing, washing and drying, and the expansion volume multiple of the high-expansion graphite worms is more than 800 times, preferably 1000-1500 times. The high-expansion graphite worms are commercially available products and purchased from newly-developed graphite limited company in the city of Dangyo province, Hubei province. The high expansion graphite worm is adhered between the outer surface of the anaerobic copper wire and the anaerobic copper wire in the anaerobic copper wire twisting process of the power wire core 10 and the control wire core 1 after being stirred, and the interlayer lubricating effect of the graphite worm is utilized. And a polytetrafluoroethylene wrapping tape with the thickness less than 0.05mm is wound on the surface of the lubricating layer 2.

As shown in fig. 1-2, an alternating-working-condition-resistant power cable production device comprises a plurality of rotatable raw material frames 101 and a plurality of direction-rotatable winding devices, wherein a container 104 for containing a lubricating material is arranged below the raw material frames 101, and preferably, the container 104 is filled with high-expansion graphite worms. The top of the container 104 is provided with a plurality of wire inlets 102 communicated with the hollow rotating shaft 124 of the raw material rack 101, and the bottom of the container 104 is provided with a second porcelain tube 106 for the twisted wire core 109 to pass through. A plurality of raw material filaments are threaded through the feed port 102, twisted in the container 104, and the high-expansion graphite worms are adsorbed or held on the surface of the raw material filaments.

In a preferred embodiment, as shown in fig. 1, the bottom of the material rack 101 is rotatably connected to a hollow sleeve disposed at the top of the container 104 via a vertical hollow rotating shaft 124, and the hollow rotating shaft 124 is connected to a driving device for driving rotation. Preferably, as shown in fig. 2, the material racks 101 are arranged in a concentric array at the top of the vessel 104, in this case, the concentric array is a plurality of annular arrays from the center to the edge, and the material racks 101 in each annular array are uniformly distributed. Like a plurality of concentric circles. The hollow rotating shafts 124 of the raw material frames 101 are connected with each other through a transmission mechanism, the transmission mechanism in the embodiment adopts a synchronous belt, and the raw material frame rotation driving device 121 is connected with the hollow rotating shaft 124 of one raw material frame 101 through the transmission mechanism; as shown in fig. 2, the hollow rotating shafts 124 of the outer ring are connected with each other through a synchronous belt, one hollow rotating shaft 124 at the end is connected with the hollow rotating shaft 124 of the inner ring through a synchronous belt, the hollow rotating shafts 124 of the inner ring are connected with each other through a synchronous belt, the end of each hollow rotating shaft 124 of the inner ring is connected with the hollow rotating shaft 124 located at the center of a circle through a synchronous belt, the hollow rotating shaft 124 at the center of a circle is connected with the raw material frame rotation driving device 121, and the raw material frame rotation driving device 121 adopts a combination of a speed reducer and a speed regulating motor. So that the rotational speed and direction of rotation of the stock holder 101 matches the direction of rotation of the finished product roll-up holder 115.

In another alternative, each hollow shaft 124 is coupled to a separate material holder rotational drive. The scheme is used for manufacturing the cable equipment with a thicker diameter.

Preferably, as shown in fig. 1, the raw material yarn package 100 is rotatably supported by the raw material stand 101, and the rotational axis of the raw material yarn package 100 is perpendicular to the axis of the hollow shaft 124. That is, the hollow shaft 124 rotates and the raw material yarn package 100 also rotates under the traction of the raw material yarn, and preferably, a damping structure is provided between the rotational shaft of the raw material yarn package 100 and the raw material holder 101 or between the rotational shaft of the raw material yarn package 100 and the raw material yarn reel, and the magnitude of the resistance is matched to the tensile strength of the raw material yarn, and preferably, should be lower than the tensile yield limit of the raw material yarn.

In a preferred scheme, a wire inlet 102 is formed in one end, facing the raw material frame 101, of the hollow rotating shaft 124, and the wire inlet 102 is a horn-shaped ceramic nozzle; with this structure, friction of the raw material wire is reduced. Since the raw wire package 100 is typically of a relatively large length, the raw wire is at an angle to the axis of the feed opening 102, and the flare shape of the feed opening 102 needs to match the maximum angle.

A first porcelain tube 103 is arranged at the top of the container 104, and the wire inlet 102 is communicated with the first porcelain tube 103. The bottom of the first porcelain tube 103 is provided with a bell mouth shape.

In a preferred embodiment, as shown in fig. 1, the container 104 is connected to a graphite worm inlet 105, in this case, the graphite worms are expanded and sufficiently stirred and crushed, a filter screen 107, in this case, a ceramic filter screen, is further provided on the container 104, and a negative pressure suction port 108 is provided on a side of the filter screen 107 away from the inner cavity of the container 104, so that negative pressure is sucked into the container 104 through the negative pressure suction port 108, thereby facilitating feeding and preventing the graphite worms from escaping. Preferably, the filter screen 107 is in a ring structure and is positioned in the inner core of the container 104, the upper end and the lower end of the filter screen 107 form a seal with the inner wall of the container 104, the graphite worm inlet 105 penetrates through the inner wall of the filter screen 107 to reach the inner cavity of the container 104, and the negative pressure suction port 108 penetrates through the wall of the container 104 and is positioned in a cavity with the outer wall of the filter screen 107. With this structure, the filtering area of the filter screen is increased, and sufficient negative pressure is ensured.

In the preferred embodiment shown in fig. 1, in the winding device, the finished product winding frame 115 is rotatably connected to the frame 119 through a rotating shaft 125, and the finished product winding frame 115 is connected to the winding frame rotation driving device 118;

the finished product package rack 115 is provided with a finished product package 116, and the finished product package 116 is connected with a package rotation driving device 117 for driving rotation;

the axis of rotation of the product package 116 is perpendicular to the axis of the spindle 125. With this structure, the completed package 116 is rotated around the axis of the rotating shaft 125 and also rotated, thereby performing a twisting and winding operation. In this example, the rotation driving device 117 and the package holder rotation driving device 118 are both a combination of a speed reducer and a speed-adjusting motor. The preferable reducer adopts an RV large reduction ratio reducer.

Preferably, as shown in fig. 1, a wire guide device is further provided on the upstream side of the winding device, and the wire guide device has a swinging lead frame 123 connected to a lead cam shaft 122. With this structure, the lead cam shaft 122 rotates to drive the swinging lead frame 123 to reciprocate, so as to sequentially arrange the twisted wire cores 109 on the finished package 116.

Preferably, as shown in fig. 1, a taping device is further disposed between the container 104 and the take-up device; in this example, a polytetrafluoroethylene film tape is used.

In the taping device, a tape reel 110 is mounted on one side of the twisted wire core 109 in such a manner as to be axially reciprocated and rotated. The specific structure is as shown in fig. 1, the wrapping tape roll 110 is connected with a damping rotating shaft 111, the damping rotating shaft 111 is rotatably connected with a damping sleeve 112 fixedly installed, the resistance between the damping sleeve 112 and the damping rotating shaft 111 should be smaller than the tensile yield limit of the polytetrafluoroethylene film tape, a shifting rod 113 is arranged on the damping rotating shaft 111, the shifting rod 113 can drive the rotating shaft to rotate along the axial direction without influencing the rotation of the damping rotating shaft 111, a rack is arranged on the shifting rod 113, a driving gear 114 is arranged on one side of the shifting rod 113, the driving gear 114 is connected with a driving device, the shifting rod 113 is driven to reciprocate through the rotation of the driving gear 114, so that the output angle of the wrapping tape roll 110 is driven to reciprocate. With the structure, the tape roll 110 can be made of cheap materials, and the requirement on precision is not high, which is beneficial to reducing the cost of the tape roll 110.

Another optional structure is that the tape roll 110 is mounted on a support which can move axially along the tape roll 110, damping is provided between the tape roll 110 and the support, a rack is provided on the support, and the driving gear 114 is connected with a driving device, and the support is driven to reciprocate by the rotation of the driving gear 114.

When the device is used, purified and expanded high-expansion graphite worms are fed into a container 104 through a graphite worm inlet 105, a raw material wire package 100 is installed on a raw material rack 101, preferably, conductive silicone grease is coated on the surface of the raw material wire and used for adhering the high-expansion graphite worms, the raw material wire enters the container 104 after penetrating into a wire inlet 102 and a first porcelain tube 103 and then penetrates out of a second porcelain tube 106 after being stranded, and the top of the second porcelain tube 106 is of a horn-mouth structure. The stranded wire core is connected to the finished package 116 through a fixed wire loop 126 and a swinging lead frame 123. preferably, the stranded feedstock wire is grounded through the finished package 116 and a positive charge is applied to the interior of the container 104 to increase the electrostatic attraction of the feedstock wire. The winding frame rotation driving means 118, the package rotation driving means 117 and the stock frame rotation driving means 121 are activated, wherein the stock frame rotation driving means 121 rotates the stock frame 101 in the opposite direction to the finished product winding frame 115 to provide a twisting force between the raw material wires. The end of the teflon film tape of the tape wrapping roll 110 is lapped on the surface of the stranded wire core 109 at a certain inclination angle, and is coated on the surface of the stranded wire core 109 along with the rotation of the stranded wire core 109. The stranding process of the anaerobic copper wire raw material wires is realized through the steps, and the high-expansion graphite worms for lubrication, electric conduction and heat conduction are arranged between the surface of the stranded wire core 109 and the anaerobic copper wires. The quality of the power cable finished product is greatly improved, and the alternating working condition resistance performance is improved.

The above-described embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the present invention, and features in the embodiments and examples in the present application may be arbitrarily combined with each other without conflict. The protection scope of the present invention is defined by the claims, and includes equivalents of technical features of the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the invention.

Claims

1. The utility model provides a resistant alternation operating mode power cable apparatus for producing, includes a plurality of rotatable former work or material rest (101) and the pivoted coiling mechanism of a plurality of directions, characterized by: a container (104) for containing lubricating materials is arranged below the raw material frames (101), a plurality of wire inlets (102) communicated with the hollow rotating shaft (124) of the raw material frames (101) are formed in the top of the container (104), and a second ceramic tube (106) for the stranded wire core (109) to pass through is arranged at the bottom of the container (104).

2. The alternating working condition resistant power cable production device as claimed in claim 1, wherein: the hollow rotating shaft (124) is vertically arranged at the bottom of the raw material rack (101), the hollow rotating shaft (124) is rotatably connected with the top of the container (104), and the hollow rotating shaft (124) is further connected with a driving device for driving rotation.

3. The alternating working condition resistant power cable production device as claimed in claim 2, wherein: the raw material yarn package (100) is rotatably supported by the raw material frame (101), and the rotational axis of the raw material yarn package (100) is perpendicular to the axis of the hollow rotational shaft (124).

4. The alternating working condition resistant power cable production device as claimed in claim 3, wherein: the wire inlet (102) is arranged at one end of the hollow rotating shaft (124) facing the raw material rack (101), and the wire inlet (102) is a horn-mouth-shaped ceramic nozzle;

the top of the container (104) is provided with a first porcelain tube (103), and the wire inlet (102) is communicated with the first porcelain tube (103).

5. The alternating working condition resistant power cable production device as claimed in claim 3, wherein: a damping device is arranged between a rotating shaft of the raw material wire package (100) and the raw material rack (101).

6. An alternating working condition resistant power cable production device as claimed in any one of claims 1 to 5, characterized in that: the container (104) is connected with the graphite worm inlet (105), a filter screen (107) is further arranged on the container (104), and a negative pressure suction opening (108) is formed in one side, away from the inner cavity of the container (104), of the filter screen (107).

7. The alternating working condition resistant power cable production device as claimed in claim 2, wherein: the raw material racks (101) are arranged at the top of the container (104) in a concentric array, hollow rotating shafts (124) of the raw material racks (101) are mutually connected through a transmission mechanism, and a raw material rack rotation driving device (121) is connected with the hollow rotating shaft (124) of one raw material rack (101) through the transmission mechanism;

or each hollow rotating shaft (124) is connected with an independent raw material rack rotating driving device.

8. The alternating working condition resistant power cable production device as claimed in claim 1, wherein: in the winding device, a finished product winding frame (115) is rotatably connected with a rack (119) through a rotating shaft (125), the finished product winding frame (115) is connected with a winding frame rotation driving device (118), and a finished product winding (116) is arranged on the finished product winding frame (115) so that the finished product winding (116) rotates by taking the axis of the rotating shaft (125) as the center of a circle;

the finished product package (116) is connected with a package rotation driving device (117) for driving rotation;

the axis of rotation of the completed package (116) is perpendicular to the axis of the spindle (125).

9. The alternating-working-condition-resistant power cable production device as claimed in claim 1 or 8, wherein: a lead device is also arranged on the upstream side of the winding device, and in the lead device, a swinging lead frame (123) is connected with a lead camshaft (122).

10. An alternating working condition resistant power cable production device as claimed in any one of claims 1 to 5 and 7 to 8, wherein: a belt wrapping device is also arranged between the container (104) and the winding device;

in the taping device, a tape reel (110) is mounted on one side of a stranded wire core (109) in a manner of reciprocating and rotating along the axial direction.