CN115958137A - Heating and straightening device for 110kV and above transmission cables - Google Patents
Heating and straightening device for 110kV and above transmission cables Download PDFInfo
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- CN115958137A CN115958137A CN202211733950.6A CN202211733950A CN115958137A CN 115958137 A CN115958137 A CN 115958137A CN 202211733950 A CN202211733950 A CN 202211733950A CN 115958137 A CN115958137 A CN 115958137A
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Abstract
The invention discloses a heating straightening device of a transmission cable of 110kV or above, which comprises a straightening bracket, wherein the straightening bracket extends axially and is sleeved outside the cable; the adjusting module comprises a low-temperature coarse adjusting unit and a high-temperature fine adjusting unit, wherein: the low-temperature coarse adjustment unit runs in a normal-temperature or low-temperature heating state, performs the straightening action of the cable by rolling the cable with the support wheel in a reciprocating manner, and is suitable for the straightening and coarse adjustment of the cable within the range of 10-30 degrees; the high-temperature fine adjustment unit operates under a high-temperature heating condition, performs 'hammering' action of the cable by the circulating support of the arc-shaped jacking sheet, and is suitable for the straightening and fine adjustment of the cable within the range of 0-10 degrees; the straightening device adopts radiation heating in cooperation with low-temperature coarse adjustment and high-temperature fine adjustment means, so that the straightening efficiency and the straightening precision of the cable are effectively improved, and the problem that the insulation shielding layer in a high-temperature state is damaged by rolling straightening force is solved.
Description
Technical Field
The invention belongs to the field of power cable construction, relates to a bending repair device for a high-voltage cable, and particularly relates to a heating straightening device for a transmission cable of 110kV or above.
Background
Cables are generally formed like ropes by stranding several wires or groups of wires, each group of wires being insulated from each other and usually twisted around a center, and being entirely surrounded by a highly insulating covering and characterized by inner and outer electrical insulation.
Common cables include power cables, control cables, compensation cables, shielded cables, high temperature cables, computer cables, signal cables, coaxial cables, fire resistant cables, marine cables, mining cables, aluminum alloy cables, and the like. They are composed of single or multi-strand wires and insulating layers, and are used for connecting circuits, electric appliances and the like. In production, the transportation, often have the phenomenon that the cable is buckled, the cable of buckling is unfavorable for the installation of cable and uses, generally all can cut out, does the extravagant resource like this, perhaps carries out the alignment through equipment auxiliary heating and roll-in cable, but the alignment effect is not good, and the roll-in action after the heating is great to the outside insulation barrier of cable damage, therefore current cable alignment treatment efficiency is not high, and the alignment precision is relatively poor.
In addition, in the heating and straightening process of the current transmission cable of 110kV or above, a heating blanket is adopted for heating by adopting a direct coating heat transfer means, so that a large amount of strip materials are consumed in each heating process, the insulation retraction effect is not ideal, the straightening precision of the cable is still not high, an insulation shielding layer is stressed and deformed in the binding and straightening process of the strip materials and angle iron, and the installation and construction quality of accessories is influenced.
Therefore, how to design an aligning apparatus, which can automatically and efficiently align the cable without damaging the insulation shielding layer outside the cable, is a technical problem to be solved in the art.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a heating straightening device for a 110kV or above transmission cable, which adopts radiation heating, low-temperature coarse adjustment and high-temperature fine adjustment means, effectively improves the straightening efficiency and the straightening precision of the cable, and effectively avoids the problem that an insulating shielding layer in a high-temperature state is damaged by rolling straightening force.
A heating straightening device for 110kV and above transmission cables comprises a straightening bracket which extends axially and is sleeved outside the cables, an adjusting module for radially adjusting a jacking cable is connected in the straightening bracket in an axial sliding guide manner, and a plurality of heating rods are axially and fixedly arranged in the straightening bracket; the adjusting module comprises a low-temperature coarse adjusting unit and a high-temperature fine adjusting unit, wherein:
the low-temperature coarse adjustment unit comprises: the top and the bottom of the T-shaped vertical plate are fixedly provided with a plurality of wheel carriers which slide in the straightening bracket along the axial direction of the cable along the horizontal direction; the wheel carrier is radially telescopic and is rotatably connected with a top supporting wheel for supporting the outer wall of the cable;
the high-temperature trimming unit includes: one side of the box body is fixedly connected with the T-shaped vertical plate, a straightening hole axially penetrating through the cable is formed in the middle of the box body, and a gear bin is arranged in the box body; the gear bin is internally meshed with each other and is rotationally connected with a driving gear and a driven gear, wherein the driving gear provides rotary power by a gear motor fixedly arranged outside the box body; the driven gear is a ring gear sleeved outside the alignment hole, and a radially inward convex jacking part is manufactured on the circumferential inner wall of the driven gear; the hole wall of the straightening hole is circumferentially and uniformly distributed and radially and slidably connected with a plurality of jacking components in a penetrating mode, one end of each jacking component is matched with the outer wall of a jacking cable, and the other end of each jacking component is radially and circularly jacked by the jacking portion of the inner ring of the driven gear.
Preferably, the wheel frame is fixedly provided with a wheel frame motor, three wheel frames are arranged in a triangular manner, two wheel frames are arranged below the cable, and one wheel frame is arranged above the cable; the wheel frames are vertically penetrated and are connected with lifting rods in a sliding mode, one end of each lifting rod provides lifting sliding power through a wheel frame motor, and the other end of each lifting rod is rotatably connected with a fine adjustment wheel.
Preferably, the top support assembly comprises a top support rod, a fine adjustment wheel, a return spring and an arc-shaped top support sheet, wherein the top support rod slides in the radial direction and is connected to the hole wall of the straightening hole in a penetrating manner, the arc-shaped top support sheet contacting with the outer wall of the cable is fixedly arranged at one end of the top support rod facing the axis of the straightening hole, and the end of the top support rod opposite to the axis of the straightening hole is rotatably connected with the fine adjustment wheel; the reset spring is sleeved on the top support rod, one end of the reset spring elastically supports on the outer hole wall of the straightening hole, and the other end of the reset spring provides radial reset power for the fine adjustment wheel; the fine-tuning wheel is matched with the top supporting part of the inner ring of the driven gear in a rotating way.
Preferably, the straightening support comprises two end plates, the middle parts of the end plates axially penetrate through the cables, and four corners of the two end plates are respectively fixed by tightening a plurality of counter-pulling polish rods.
Preferably, the end plate is rotatably connected with a power screw, and a screw motor for providing rotating power for the power screw is fixedly arranged on the end plate; the power screw rod is sleeved with a threaded sleeve, and the threaded sleeve is fixedly connected with the T-shaped vertical plate and the box body.
Preferably, the end plates are fixedly provided with cable brackets, wherein the cable brackets positioned at the fixed end of the cable radially clamp and fix the cable, and the cable brackets positioned at the free end of the cable radially support the cable.
The invention has the advantages and technical effects that:
according to the heating straightening device for the transmission cable of 110kV or above, the straightening support sleeved on the cable provides sliding guiding support for the low-temperature rough adjusting unit and the high-temperature fine adjusting unit of the straightening device, wherein the low-temperature rough adjusting unit adopts the top support wheel to roll the cable insulation shielding layer, so that the cable insulation shielding layer is only suitable for straightening the cable under normal-temperature or low-temperature heating conditions for avoiding damage of the insulation shielding layer, and particularly, the low-temperature cold-pressing straightening function that the cable is bent greatly and has low requirement on straightening precision is realized; the high temperature fine setting unit adopts the flexible reciprocal top of arc top supporting piece to prop cable insulation shielding layer, because the elastic deformation limit decline of cable insulation shielding layer under the high temperature condition, so adopt flexible top to prop the alignment means and can effectively protect cable insulation shielding layer, avoid it to receive roll-in alignment force and damage.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 isbase:Sub>A sectional view taken along section A-A of FIG. 1 (base:Sub>A schematic structural view ofbase:Sub>A coarse low temperature adjustment unit);
FIG. 3 is a sectional view of section B-B of FIG. 1 (a schematic view of a high temperature trimming unit structure);
in the figure: 1-a cable; 2-end plate; 3-a power screw; 4-pair of pull rod; 5-wheel carrier; 6-a top supporting wheel; 7-T-shaped vertical plates; 8-gear motor; 9-a threaded sleeve; 10-a box body; 11-a screw motor; 12-a cable tray; 13-a heating rod; 14-a wheel carriage motor; 15-lifting rod; 16-a drive gear; 17-a gear chamber; 18-a driven gear; 19-a top support portion; 20-aligning holes; 21-arc-shaped supporting sheets; 22-a fine tuning wheel; 23-a top brace bar; 24-return spring.
Detailed Description
For a further understanding of the contents, features and effects of the present invention, reference will now be made to the following examples, which are to be considered in conjunction with the accompanying drawings. It should be noted that the present embodiment is illustrative, not restrictive, and the scope of the invention should not be limited thereby.
A heating straightening device for 110kV and above power transmission cables comprises a straightening bracket which extends axially and is sleeved outside a cable 1, an adjusting module for radially adjusting a top support cable is connected to the inner part of the straightening bracket in an axial sliding and guiding manner, and a plurality of heating rods 13 are fixedly arranged in the straightening bracket in the axial direction; the adjusting module comprises a low-temperature coarse adjusting unit and a high-temperature fine adjusting unit, wherein:
the low-temperature coarse adjustment unit comprises: the top and the bottom of the T-shaped vertical plate are fixedly provided with a plurality of wheel frames 5 which slide in the straightening bracket along the axial direction of the cable along the horizontal direction; the wheel carrier is radially telescopic and is rotatably connected with a top supporting wheel 6 for supporting the outer wall of the cable;
the high-temperature trimming unit includes: the cable straightening device comprises a box body 10, a T-shaped vertical plate, a straightening hole 20 and a gear bin 17, wherein one side of the box body is fixedly connected with the T-shaped vertical plate, the straightening hole 20 axially penetrating through a cable is formed in the middle of the box body, and the gear bin 17 is formed in the box body; the gear chamber is meshed with each other and is rotationally connected with a driving gear 16 and a driven gear 18, wherein the driving gear is provided with rotary power by a gear motor 8 fixedly arranged outside the box body; the driven gear is a ring gear sleeved outside the alignment hole, and a radially inward convex jacking part 19 is manufactured on the circumferential inner wall of the driven gear; the hole wall of the straightening hole is circumferentially and uniformly distributed and radially and slidably connected with a plurality of jacking components in a penetrating mode, one end of each jacking component is matched with the outer wall of a jacking cable, and the other end of each jacking component is radially and circularly jacked by the jacking portion of the inner ring of the driven gear.
Preferably, the wheel carrier is fixedly provided with a wheel carrier motor 14, and the wheel carriers are three and arranged in a triangle, wherein two wheel carriers are arranged below the cable, and one wheel carrier is arranged above the cable; the wheel frames are vertically penetrated and are connected with lifting rods 15 in a sliding mode, one end of each lifting rod provides lifting sliding power through a wheel frame motor, and the other end of each lifting rod is connected with a fine adjustment wheel in a rotating mode.
Preferably, the top support assembly comprises a top support rod 23, a fine adjustment wheel 22, a return spring 24 and an arc-shaped top support piece 21, wherein the top support rod slides in the radial direction and is connected to the hole wall of the straightening hole in a penetrating manner, the arc-shaped top support piece contacting with the outer wall of the cable is fixedly arranged at one end of the top support rod facing the axis of the straightening hole, and the end of the top support rod opposite to the axis of the straightening hole is rotatably connected with the fine adjustment wheel; the reset spring is sleeved on the top support rod, one end of the reset spring elastically supports on the outer hole wall of the straightening hole, and the other end of the reset spring provides radial reset power for the fine adjustment wheel; the fine-tuning wheel is matched with the top supporting part of the inner ring of the driven gear in a rotating way.
Preferably, the straightening support comprises two end plates 2, the middle parts of the end plates axially penetrate through the cables, and four corners of the two end plates are respectively tensioned and fixed through a plurality of counter-pulling polish rods 4.
Preferably, the end plate is rotatably connected with a power screw 3, and a screw motor 11 for providing rotating power for the power screw is fixedly arranged on the end plate; the power screw rod is sleeved with a threaded sleeve 9 which is fixedly connected with the T-shaped vertical plate and the box body.
Preferably, the end plates are fixedly provided with cable brackets 12, wherein the cable bracket at the fixed end of the cable radially clamps and fixes the cable, and the cable bracket at the free end of the cable radially supports the cable.
In order to more clearly illustrate the embodiments of the present invention, several examples are provided below:
according to the heating and straightening device for the transmission cable of 110kV or more, a low-temperature rough-adjusting straightening process is required to be carried out firstly in a high-precision cable straightening process, and then a high-temperature fine-adjusting straightening process is required to be carried out.
The low-temperature rough adjusting and straightening is generally used for rough adjusting and straightening cables with the bending degrees within the range of 10-30 degrees, a screw motor reciprocates at a high speed during operation to drive a power screw to rotate clockwise and anticlockwise alternately, further the power screw provides axial reciprocating translation power for a screw sleeve, and drives a low-temperature rough adjusting unit and a high-temperature fine adjusting unit to reciprocate on the cables, and in the process, the high-temperature fine adjusting unit is not started (namely an arc-shaped top supporting plate is not in contact with an insulating shielding layer of the cables), and the insulating shielding layer of the cables is rolled and pressed in a reciprocating manner only by the low-temperature rough adjusting unit under a normal-temperature or low-temperature heating state. In the straightening process, the wheel frame motor drives the shoring wheel to radially extrude the cable, and the action of straightening the cable is executed while the integral low-temperature coarse adjustment unit axially reciprocates.
High-temperature fine adjustment straightening is generally used for fine adjustment straightening of a cable with the bending degree within the range of 0-10 degrees, when the cable straightening machine operates, a screw motor rotates in a low-speed one-way mode to drive a high-temperature fine adjustment unit to move horizontally from an end plate at one end to an end plate at the other end, in the process, a low-temperature coarse adjustment unit does not start (namely a top support wheel does not contact with an insulating shielding layer of the cable), the radiation heating temperature of a heating rod is simultaneously raised, in the axial moving process of a box body, a gear motor drives a driving gear to move in a reciprocating mode or rotate in a one-way mode, a top support part in a driven gear supports a certain fine adjustment wheel in a reciprocating mode or supports a plurality of fine adjustment wheels in a circulating mode, then radial supporting power is provided for a top support rod through the fine adjustment wheels, finally the supporting force is knocked on the insulating shielding layer of the cable through an arc-shaped top support piece, and the bent cable is straightened through reverse knocking action; in the process that the top supporting part rotates along with the driven gear, the top supporting rod which is not extruded by the top supporting part is driven by the reset spring to reset, so that the arc-shaped top supporting piece is separated from the cable insulation shielding layer, and the process is repeated until the high-temperature fine-tuning cable straightening process is completed.
Finally, the invention adopts mature products and mature technical means in the prior art.
It will be appreciated that modifications and variations are possible to those skilled in the art in light of the above teachings, and it is intended to cover all such modifications and variations as fall within the scope of the appended claims.
Claims (6)
1. The utility model provides a heating coalignment of 110kV and above transmission cable which characterized in that: the straightening device comprises a straightening bracket which extends axially and is sleeved outside a cable, an adjusting module which is connected with the top support cable in a radial adjusting manner in the straightening bracket in an axial sliding and guiding manner, and a plurality of heating rods are fixedly arranged in the straightening bracket in the axial direction; the adjusting module comprises a low-temperature coarse adjusting unit and a high-temperature fine adjusting unit, wherein:
the low-temperature coarse adjustment unit comprises: the top and the bottom of the T-shaped vertical plate are fixedly provided with a plurality of wheel carriers which slide in the straightening bracket along the axial direction of the cable along the horizontal direction; the wheel carrier is radially telescopic and is rotatably connected with a top supporting wheel for supporting the outer wall of the cable;
the high-temperature trimming unit includes: one side of the box body is fixedly connected with the T-shaped vertical plate, a straightening hole axially penetrating through the cable is formed in the middle of the box body, and a gear bin is arranged in the box body; the gear bin is internally meshed with each other and is rotationally connected with a driving gear and a driven gear, wherein the driving gear is provided with rotary power by a gear motor fixedly arranged outside the box body; the driven gear is a ring gear sleeved outside the alignment hole, and a radially inward convex jacking part is manufactured on the circumferential inner wall of the driven gear; the hole wall of the straightening hole is circumferentially and uniformly distributed and radially slidably connected with a plurality of top bracing assemblies in a penetrating manner, one end of each top bracing assembly is matched with the outer wall of a top bracing cable, and the other end of each top bracing assembly is radially and circularly propped by a top bracing part of the inner ring of the driven gear.
2. A heating straightening device for 110kV and above transmission cables according to claim 1, characterized in that: the wheel frame is fixedly provided with a wheel frame motor, three wheel frames are arranged and arranged in a triangular shape, two wheel frames are arranged below the cable, and one wheel frame is arranged above the cable; the wheel carrier is vertically penetrated and is connected with a lifting rod in a sliding mode, one end of the lifting rod is provided with lifting sliding power by a wheel carrier motor, and the other end of the lifting rod is rotatably connected with the fine adjustment wheel.
3. A heating straightening device for 110kV and above transmission cables according to claim 1, characterized in that: the top support component comprises a top support rod, a fine adjustment wheel, a reset spring and an arc-shaped top support sheet, wherein the top support rod slides in the radial direction and is connected to the hole wall of the straightening hole in a penetrating manner, the arc-shaped top support sheet contacting with the outer wall of the cable is fixedly arranged at one end of the top support rod facing the axis of the straightening hole, and the end of the top support rod opposite to the axis of the straightening hole is rotatably connected with the fine adjustment wheel; the reset spring is sleeved on the top support rod, one end of the reset spring elastically supports on the outer hole wall of the straightening hole, and the other end of the reset spring provides radial reset power for the fine adjustment wheel; the fine adjustment wheel is in running fit with the supporting part of the inner ring of the driven gear.
4. A heating straightening device for 110kV and above transmission cables according to claim 1, characterized in that: the straightening support comprises two end plates, the middle parts of the end plates axially penetrate through the cables, and four corners of the two end plates are respectively tensioned and fixed through a plurality of counter-pull polish rods.
5. A heating straightening device for 110kV and above transmission cables according to claim 2, characterized in that: the end plate is rotatably connected with a power screw, and a screw motor for providing rotary power for the power screw is fixedly arranged on the end plate; the power screw rod is sleeved with a threaded sleeve, and the threaded sleeve is fixedly connected with the T-shaped vertical plate and the box body.
6. A heating straightening device for 110kV and above transmission cables according to claim 2, characterized in that: the end plates are fixedly provided with cable brackets, wherein the cable bracket positioned at the fixed end of the cable radially clamps and fixes the cable, and the cable bracket positioned at the free end of the cable radially supports the cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211733950.6A CN115958137A (en) | 2022-12-19 | 2022-12-19 | Heating and straightening device for 110kV and above transmission cables |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211733950.6A CN115958137A (en) | 2022-12-19 | 2022-12-19 | Heating and straightening device for 110kV and above transmission cables |
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| CN115958137A true CN115958137A (en) | 2023-04-14 |
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| CN202211733950.6A Pending CN115958137A (en) | 2022-12-19 | 2022-12-19 | Heating and straightening device for 110kV and above transmission cables |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117254395A (en) * | 2023-11-18 | 2023-12-19 | 山西省安装集团股份有限公司 | Threading device for building circuit installation |
-
2022
- 2022-12-19 CN CN202211733950.6A patent/CN115958137A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117254395A (en) * | 2023-11-18 | 2023-12-19 | 山西省安装集团股份有限公司 | Threading device for building circuit installation |
| CN117254395B (en) * | 2023-11-18 | 2024-02-06 | 山西省安装集团股份有限公司 | Threading device for building circuit installation |
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