CN107732789B - Overhead line wire-stringing device - Google Patents
Overhead line wire-stringing device Download PDFInfo
- Publication number
- CN107732789B CN107732789B CN201711224688.1A CN201711224688A CN107732789B CN 107732789 B CN107732789 B CN 107732789B CN 201711224688 A CN201711224688 A CN 201711224688A CN 107732789 B CN107732789 B CN 107732789B
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- Prior art keywords
- pulley
- fixed
- overhead line
- wire
- fixed pulley
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/02—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables
- H02G1/04—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables for mounting or stretching
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/82—Recycling of waste of electrical or electronic equipment [WEEE]
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- Electric Cable Installation (AREA)
Abstract
The invention provides an overhead line wire-erecting and wire-tightening device, which comprises a support body and a pulley block, wherein the support body is used for being fixed on a cross arm of a telegraph pole tower, and the pulley block is fixed on the support body and used for erecting and tightening an overhead line; the pulley block comprises a first fixed pulley, a second fixed pulley and a movable pulley, wherein the first fixed pulley and the second fixed pulley are arranged at intervals along the trend of an overhead line; and two ends of the movable pulley are respectively connected with an elastic body for limiting the movement position of the brake pulley. The overhead line wire-drawing and wire-drawing device provided by the invention can finish wire-drawing work by only one operator, and after the overhead line sag is adjusted, the overhead line sag cannot change, so that the manual labor amount can be reduced, the line construction efficiency can be improved, and the line construction quality can be ensured.
Description
Technical Field
The invention belongs to the technical field of overhead line erection equipment, and particularly relates to an overhead line erection wire tightening device.
Background
Laying overhead lines is an important work for line construction and comprises the working procedures of wire laying, wire tightening, wire binding and the like. Firstly, a traction device is used for releasing an overhead wire, the released overhead wire is erected into a paying-off pulley on a crossarm of a telegraph pole tower by using a hanger, then the overhead wire is initially tensioned by using the traction device, then sag of the overhead wire is adjusted by using a wire stretcher, after the sag meets the specified standard, the wire tightening is stopped, the tensioned overhead wire is provided with a wire clamp and is connected with an assembled insulator, and then the wire stretcher is loosened to enable the overhead wire to be in a free state.
In the prior art, two operators are required to carry out wire tightening work, one operator climbs to a telegraph pole tower and repeatedly adjusts the sag of an overhead wire by using a wire tightener, the other operator observes the sag on the ground, the wire tightener listens to the command of the sag observer, and the two operators are mutually matched to complete the wire tightening work. Sometimes, the sag adjustment is not in place, or the overhead line falls back, so that the sag of the overhead line needs to be readjusted, and the construction time is long and the working efficiency is low.
Disclosure of Invention
The invention aims to provide an overhead line wire-drawing device, which can solve the problem of falling of an overhead line in the prior art, can finish wire-drawing work by only one operator, can not change after the sag of the overhead line is adjusted, can lighten the manual labor amount, improve the line construction efficiency and can ensure the line construction quality to realize the purposes, and adopts the following technical scheme: the overhead line stringing and tightening device comprises a support body and a pulley block, wherein the support body is used for being fixed on a cross arm of a telegraph pole tower, and the pulley block is fixed on the support body and used for erecting and tightening an overhead line; the pulley block comprises a first fixed pulley, a second fixed pulley and a movable pulley, wherein the first fixed pulley and the second fixed pulley are arranged at intervals along the trend of an overhead line; and two ends of the movable pulley are respectively connected with an elastic body for limiting the movement position of the brake pulley.
Further, the support body comprises two side plates arranged at intervals and a bottom plate fixed at the bottoms of the two side plates; each side plate is provided with a strip-shaped opening which is inclined relative to the bottom edge of the side plate; one end of the opening, which is close to the first fixed pulley, is lower than one end of the opening, which is close to the second fixed pulley; the two ends of the center rotating shaft of the movable pulley respectively penetrate through the openings of the two side plates and are fixed on the outer side surfaces of the two side plates through bearings.
Further, two ends of the central rotating shaft of the first fixed pulley respectively penetrate through the two side plates and are fixed on the outer side surfaces of the two side plates through bearings; the two ends of the central rotating shaft of the second fixed pulley respectively penetrate through the two side plates and are fixed on the outer side surfaces of the two side plates through bearings.
Further, the bottom plate is connected with a bolt for fixing on the cross arm.
Further, a fixed block is connected to each side plate at the inclined lower part of the opening; the elastic body is a spring; and two ends of the spring are respectively connected to the bearing of the movable pulley and the fixed block.
Further, a handle is connected between the two side plates.
Further, the device also comprises a power mechanism which is connected with the first fixed pulley and is fixedly connected with the cross arm and drives the first fixed pulley to rotate.
Further, the power mechanism comprises a motor and a speed change gear box; an output shaft of the speed change gear box is connected with a central rotating shaft of the first fixed pulley; an input shaft of the speed change gear box is connected with an output shaft of the motor.
Further, two overhead wire stringing and tightening devices symmetrically distributed along the central axis of the cross arm are fixed on the cross arm.
The overhead line wire-stringing and tightening device provided by the invention has the beneficial effects that: the overhead wire lifting and tensioning device is fixed on the cross arm of the wire pole tower, the pulley block can finish the working procedures of lifting and tensioning wires, when lifting wires, the overhead wires are lifted above the cross arm, the trend of the overhead wires on the pulley block sequentially passes through the top of the first fixed pulley, the bottom of the movable pulley and the top of the second fixed pulley, and the overhead wires pass through the pulley block, so that the overhead wires can be prevented from directly contacting the cross arm and wearing; when the overhead line is tightly wound, external force is applied to the overhead line, so that the overhead line is tensioned along the opposite direction of the trend of the overhead line, the movable pulley can move towards the first pulley, after sag adjustment, the external force for tensioning the overhead line disappears, the movable pulley can clamp the overhead line, and the overhead line cannot fall back. Compared with the prior art, the line tightening work can be completed by only one operator, and after the overhead line sag is adjusted, the change can not occur, so that the manual labor is reduced, the line construction efficiency is improved, and the line construction quality can be ensured.
Drawings
Fig. 1 is a schematic structural diagram of an overhead line wire-tightening device according to an embodiment of the present invention
Fig. 2 is a schematic structural view of another angle of the overhead wire-drawing device according to the embodiment of the present invention;
in the figure: 10. a support body; 101. a bottom plate; 102. a side plate; 103. a handle; 104. opening holes; 105. a fixed block; 20. pulley block; 201. a first fixed pulley; 202. a movable pulley; 203. a second fixed pulley; 30. a spring; 40. a power mechanism; 401. a motor; 402. a speed change gear box.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the invention 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 for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1 and 2, an overhead wire-drawing device provided by the present invention will now be described. The overhead line wire-drawing device comprises a support body 10 fixed on a cross arm of a wire pole tower and a pulley block 20 fixed on the support body 10 and used for erecting and drawing up an overhead line; the pulley block 20 comprises a first fixed pulley 201, a second fixed pulley 203 and a movable pulley 202, wherein the first fixed pulley 201 and the second fixed pulley 203 are arranged at intervals along the trend of overhead lines; the two ends of the movable pulley 202 are respectively connected with an elastic body for limiting the moving position of the movable pulley 202.
When overhead wires are laid on the multi-base wire pole towers, the overhead wire tightening device provided by the invention is fixed on the cross arm of the last-base wire pole tower. And paying-off pulleys are fixed on the cross arms of the wire pole towers of each base except the wire pole tower of the last base. The overhead line laying process comprises the following steps: the overhead line is released by using traction equipment, and the released overhead line frame is hung into a paying-off pulley by using a hanging tool, so that one end of the overhead line sequentially passes through the top of the first fixed pulley 201, the bottom of the movable pulley 202 and the top of the second fixed pulley 203; after the overhead line is completed, external force is applied to the overhead line by using traction equipment or other external force equipment, so that the overhead line is tensioned along the opposite direction of the trend of the overhead line to adjust sag, the movable pulley 202 can also move towards the first fixed pulley 201 in the tensioning process, after sag adjustment, the external force for tensioning the overhead line disappears, the movable pulley 202 can clamp the overhead line, and the overhead line cannot fall back; the tensioned overhead wire is clamped and connected to the already assembled insulator.
Compared with the prior art, the overhead wire stringing and tightening device provided by the invention can finish the procedures of stringing and tightening, and when stringing, the overhead wire passes through the pulley block 20, so that the overhead wire can be prevented from directly contacting with the cross arm and wearing; when the line is tightly wound, only one operator is required to work, and after the sag of the overhead line is adjusted, the overhead line cannot change, so that the manual labor is reduced, the line construction efficiency is improved, and the line construction quality can be ensured.
Further, referring to fig. 1 and 2, as a specific embodiment of the overhead line wire-drawing device provided by the present invention, the support body 10 includes two side plates 102 spaced apart from each other, and a bottom plate 101 fixed to the bottoms of the two side plates 102, where the bottom plate 101 is fixed to a cross arm of a telegraph pole tower by bolts, and the fixing manner is simple and easy to detach. Each side plate 102 is provided with an elongated opening 104 inclined with respect to the bottom edge of the side plate 102, and one end of the opening 104 near the first fixed pulley 201 is lower than one end 4 near the second fixed pulley 203. A fixing block 105 for fixing the elastic body is connected to each side plate 102 obliquely below the opening 104. Because the overhead wire stringing and tightening device is an independent body, the size of the overhead wire stringing and tightening device is small, and a handle 103 is arranged between the two side plates 102 for carrying conveniently.
Further, referring to fig. 1 and 2, as a specific embodiment of the overhead wire stringing and tightening device provided by the present invention, two ends of a central rotating shaft of a first fixed pulley 201 respectively pass through two side plates 102 and are fixed on the outer sides of the two side plates 102 via bearings. The two ends of the center rotation shaft of the second fixed pulley 203 respectively pass through the two side plates 102 and are fixed on the outer side surfaces of the two side plates 102 via bearings. Both ends of the center rotation shaft of the movable pulley 202 pass through the two openings 104 and are fixed on the outer side surfaces of the two side plates 102 via bearings. The elastic body is a spring 30, and shackles at two ends of the spring 30 are respectively sleeved on the bearing of the movable pulley 202 and the fixed block 105. Because the openings 104 are distributed obliquely downwards relative to the second fixed pulley 203 to the first fixed pulley 201, the movable pulley 202 is driven to rotate only by the overhead wire under the action of the tension of the spring 30 during wire erection, and cannot move upwards; when the overhead wire is tightened, the overhead wire is pulled tightly along the opposite direction of the trend of the overhead wire under the action of external force, the movable pulley 202 moves downwards under the drive of the overhead wire, the movable pulley 202 moves stably under the traction action of the spring 30, and the spring can limit the moving position of the movable pulley 202.
Further, referring to fig. 1 and 2, as an embodiment of the overhead wire stringing device provided by the present invention, the overhead wire stringing device further includes a power mechanism 40 fixed on the cross arm. The power mechanism 40 includes a motor 401 and a change gear box 402, an output shaft of the change gear box 402 is connected to a central rotation shaft of the first fixed sheave 201, and an input shaft of the change gear box 402 is connected to an output shaft of the motor 401. The power mechanism 40 is used for providing rotating power for the first fixed pulley 201, when the overhead wire is tightened, traction equipment is not needed to be used for tightening the overhead wire, and only the motor 401 is started to drive the speed change gear box 402 to operate so as to drive the first fixed pulley 201 to rotate, so that the overhead wire moves towards the direction opposite to the direction of the overhead wire to be tightened.
Further, as a specific embodiment of the overhead wire tensioning device provided by the invention, when the overhead wire is in an overhead wire or wire tensioning state, the overhead wire tensioning device can also receive the tensile force of the overhead wire, the tensile force can be transmitted to the cross arm, and in order to ensure that the cross arm is uniformly stressed and does not move, the cross arm is fixedly provided with two overhead wire tensioning devices symmetrically distributed along the central axis of the cross arm. A plurality of overhead lines can be erected on a base telegraph pole tower, and two overhead lines can be simultaneously tensioned.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (3)
1. Overhead line tightening device, its characterized in that: the device comprises a support body fixed on a cross arm of a telegraph pole tower and a pulley block fixed on the support body and used for erecting and tensioning an overhead line; the pulley block comprises a first fixed pulley, a second fixed pulley and a movable pulley, wherein the first fixed pulley and the second fixed pulley are arranged at intervals along the trend of an overhead line; the two ends of the movable pulley are respectively connected with an elastic body for limiting the movement position of the brake pulley and a power mechanism which is connected with the first fixed pulley and is fixedly connected with the cross arm and drives the first fixed pulley to rotate;
the support body comprises two side plates arranged at intervals and a bottom plate fixed at the bottoms of the two side plates;
each side plate is provided with a strip-shaped opening which is inclined relative to the bottom surface of the side plate; one end of the opening, which is close to the first fixed pulley, is lower than one end of the opening, which is close to the second fixed pulley; the two ends of the center rotating shaft of the movable pulley respectively pass through the openings of the two side plates and are fixed on the outer side surfaces of the two side plates through bearings;
a fixed block is connected to each side plate at the inclined lower part of the opening; the elastic body is a spring; two ends of the spring are respectively connected to the bearing of the movable pulley and the fixed block;
the two ends of the central rotating shaft of the first fixed pulley respectively penetrate through the two side plates and are fixed on the outer side surfaces of the two side plates through bearings; the two ends of the central rotating shaft of the second fixed pulley respectively penetrate through the two side plates and are fixed on the outer side surfaces of the two side plates through bearings;
the power mechanism comprises a motor and a speed change gear box; an output shaft of the speed change gear box is connected with a central rotating shaft of the first fixed pulley; an input shaft of the speed change gear box is connected with an output shaft of the motor;
when the overhead line is hung above the cross arm, the overhead line moves on the pulley block and sequentially passes through the top of the first fixed pulley, the bottom of the movable pulley and the top of the second fixed pulley, and the overhead line passes through the pulley block.
2. The overhead wire trolley wire tightening device of claim 1, wherein: the bottom plate is connected with a bolt which is used for being fixed on the cross arm.
3. The overhead wire trolley wire tightening device of claim 1, wherein: a handle is connected between the two side plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711224688.1A CN107732789B (en) | 2017-11-29 | 2017-11-29 | Overhead line wire-stringing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711224688.1A CN107732789B (en) | 2017-11-29 | 2017-11-29 | Overhead line wire-stringing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107732789A CN107732789A (en) | 2018-02-23 |
| CN107732789B true CN107732789B (en) | 2023-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711224688.1A Active CN107732789B (en) | 2017-11-29 | 2017-11-29 | Overhead line wire-stringing device |
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| CN (1) | CN107732789B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109632168B (en) * | 2018-12-14 | 2021-07-16 | 国网湖北省电力有限公司神农架供电公司 | Ultrahigh-voltage stringing stress sag measuring instrument and method based on GPS (global positioning system) |
| CN117080942B (en) * | 2023-08-08 | 2024-04-05 | 石家庄铁道大学 | Cable processing equipment applied to power system construction |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6296266A (en) * | 1985-10-23 | 1987-05-02 | Mitsubishi Heavy Ind Ltd | Cable tension compensation device |
| WO2011037437A2 (en) * | 2009-09-28 | 2011-03-31 | (주)상산이엔씨 | Apparatus for automatically adding and arranging cables |
| CN203722140U (en) * | 2014-02-28 | 2014-07-16 | 国家电网公司 | Manual wire tightening device for electrical-power wiring |
| KR101485158B1 (en) * | 2014-06-12 | 2015-01-20 | 홍현자 | Electric Pole for Adjusting Position of Power Transmission Cable |
| CN204179569U (en) * | 2014-10-25 | 2015-02-25 | 国网山东齐河县供电公司 | A kind of sister block wire grip of electric transmission line erection |
| CN105762712A (en) * | 2016-04-05 | 2016-07-13 | 国网山东省电力公司章丘市供电公司 | Wire tightening device for low-voltage stringing and stringing method |
-
2017
- 2017-11-29 CN CN201711224688.1A patent/CN107732789B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6296266A (en) * | 1985-10-23 | 1987-05-02 | Mitsubishi Heavy Ind Ltd | Cable tension compensation device |
| WO2011037437A2 (en) * | 2009-09-28 | 2011-03-31 | (주)상산이엔씨 | Apparatus for automatically adding and arranging cables |
| CN203722140U (en) * | 2014-02-28 | 2014-07-16 | 国家电网公司 | Manual wire tightening device for electrical-power wiring |
| KR101485158B1 (en) * | 2014-06-12 | 2015-01-20 | 홍현자 | Electric Pole for Adjusting Position of Power Transmission Cable |
| CN204179569U (en) * | 2014-10-25 | 2015-02-25 | 国网山东齐河县供电公司 | A kind of sister block wire grip of electric transmission line erection |
| CN105762712A (en) * | 2016-04-05 | 2016-07-13 | 国网山东省电力公司章丘市供电公司 | Wire tightening device for low-voltage stringing and stringing method |
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| Publication number | Publication date |
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| CN107732789A (en) | 2018-02-23 |
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