CN109473932B - Short-range cable deicer - Google Patents
Short-range cable deicer Download PDFInfo
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- CN109473932B CN109473932B CN201711484070.9A CN201711484070A CN109473932B CN 109473932 B CN109473932 B CN 109473932B CN 201711484070 A CN201711484070 A CN 201711484070A CN 109473932 B CN109473932 B CN 109473932B
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- seat
- ice breaking
- knife
- breaking
- cable
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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
- H02G7/00—Overhead installations of electric lines or cables
- H02G7/16—Devices for removing snow or ice from lines or cables
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Abstract
The invention discloses a short-range cable deicer, which comprises a sleeve seat and an operation pull rod, wherein a main middle hole for accommodating a cable is formed in the sleeve seat; the sleeve seat comprises a first half cylinder seat and a second half cylinder seat, the first half cylinder seat is hinged with the second half cylinder seat, the first half cylinder seat is provided with a first positioning seat, the second half cylinder seat is provided with a second positioning seat, and the first positioning seat is clamped with the second positioning seat; a plurality of ice breaking mechanisms are arranged in the main middle hole, and each ice breaking mechanism comprises an ice breaking seat shell, an ice breaking motor and an ice breaking blade; the ice breaking knife comprises a knife shaft, a knife disc connected with the knife shaft and a plurality of needle knives arranged on the knife disc. The invention has the beneficial effects that: the structure is reasonable, the outdoor cable can be effectively deiced, the continuity of the deicing process is good, and the deicing capability is strong; the needle knife has the functions of pre-extrusion and pre-crushing, can protect the needle knife, and can improve the deicing effect.
Description
Technical Field
The invention belongs to the field of electric power, and particularly relates to a short-distance cable deicer.
Background
In the electric power field, the phenomenon of icing often can appear in winter in outdoor high tension cable, and in some cold areas, if high tension cable freezes for a long time or long-time ice volume is too big, lead to the cable to sink, collapse easily, and also can cause the influence to power transmission. In addition, when a certain section of high-voltage cable needs to be maintained, wired, overhauled and the like, the ice layer on the high-voltage cable can also influence normal construction. At present, a reasonable and efficient means is lacked when the cable is deiced.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides the cable short-distance deicer which is reasonable in structure, can effectively deice outdoor cables, and is good in continuity of a deicing process and strong in deicing capability.
In order to achieve the purpose, the invention adopts the following technical scheme:
a short-range cable deicer comprises
The cable connector comprises a sleeve seat and an operating pull rod, wherein a main middle hole for accommodating a cable is formed in the sleeve seat;
the sleeve seat bottom is equipped with the pole socket, and the pole socket is articulated with the operation pull rod upper end, is equipped with at least one auxiliary wheel group on the sleeve seat, and auxiliary wheel group is including two auxiliary rollers that are used for cliping the cable, in an auxiliary wheel group: the two auxiliary rollers are symmetrically arranged;
the sleeve seat comprises a first half cylinder seat and a second half cylinder seat, the first half cylinder seat is hinged with the second half cylinder seat, a first positioning seat is arranged on the first half cylinder seat, a second positioning seat is arranged on the second half cylinder seat, and the first positioning seat is clamped with the second positioning seat;
a plurality of ice breaking mechanisms are arranged in the main middle hole, and each ice breaking mechanism comprises an ice breaking seat shell, an ice breaking motor arranged in the ice breaking seat shell and an ice breaking blade arranged on the ice breaking seat shell;
in an ice breaking mechanism; the ice breaking knife comprises a knife shaft, a knife disc connected with the knife shaft and a plurality of needle knives arranged on the knife disc, the knife shaft is rotatably connected with the ice breaking seat shell, the output end of the ice breaking motor is connected with the knife shaft, and the cutting edges of the ice breaking seat shell, the knife disc and any one of the needle knives are sequentially arranged along the axial direction of the main central hole;
in the main mesopore axial direction: any ice breaking seat shell is positioned between any needle knife and any auxiliary wheel set.
When the deicing device is used for deicing, the first half cylinder seat and the second half cylinder seat are opened relatively (the first positioning seat and the second positioning seat are separated), the deicing device is sleeved on a cable to be deiced, the first half cylinder seat and the second half cylinder seat are folded and fixed relatively (the first positioning seat is clamped with the second positioning seat), at the moment, each auxiliary wheel set clamps the cable, and the cable penetrates through the main middle hole of the sleeve seat. And starting each ice breaking motor, and then an operator can pull the operating pull rod to drive the sleeve seat to advance along the cable. In the process that the sleeve seat advances along the cable, the ice breaking motor drives each ice breaking blade to rotate, so that ice can be continuously and effectively removed. In the deicing process, the auxiliary roller can assist the sleeve seat to keep in a relatively stable position, and the problem of unsmooth deicing caused by vibration and shaking is avoided.
Preferably, the operating pull rod comprises an upper rod and a lower rod, the upper end of the upper rod is hinged to the rod seat, the lower end of the upper rod is in threaded connection with the upper end of the lower rod, and the upper rod and the lower rod are coaxially arranged. The lower rod or the lower rod can be selected to be used according to different cable heights.
Preferably, the lower end of the operating pull rod is provided with a pull ring, the outer side wall of the pull ring is connected with the lower rod, the pull ring is provided with a rubber outer cladding, and the axis of the pull ring is perpendicular to and intersected with the axis of the lower rod. The pull ring can be convenient for an operator to use and operate, and is favorable for holding and pulling.
Preferably, the sleeve seat is provided with a plurality of pre-breaking mechanisms, each pre-breaking mechanism comprises a pre-breaking cam and a pre-breaking motor used for driving the pre-breaking cam to rotate, the pre-breaking motors are arranged on the sleeve seat, and the axis of each pre-breaking cam is parallel to the axis of any auxiliary roller. Before the needle knife touches ice, the pre-breaking cams can extrude the ice layer frozen on the cable, so that pre-extrusion and pre-breaking are realized, the difficulty of subsequent deicing of the needle knife can be reduced, and the deicing effect is effectively improved.
Preferably, the cutter head is provided with a plurality of slide holes corresponding to the needle knives one by one, and in the corresponding needle knives and slide holes: the needle knife is connected with the sliding hole in a sliding mode, an inner spring is arranged in the sliding hole, one end of the inner spring is connected with the needle knife, and the other end of the inner spring is connected with the cutter head. When the needle knives contact the ice layer frozen on the cable, the needle knives contacting the ice layer firstly can be retracted properly, and after the plurality of needle knives contact the ice layer together, the needle knives extrude and impact the ice layer simultaneously to ensure the ice breaking effect, and the needle knives can be protected to avoid the overlarge stress of the single needle knife.
Preferably, in an ice breaking mechanism; the cutter shaft and the cutter head are coaxially arranged, the needle cutters are uniformly distributed along the circumferential direction of the cutter head, and the distance between the cutter head and the axis of the main central hole is larger than the distance between the auxiliary roller and the axis of the main central hole.
Preferably, the number of the auxiliary wheel sets is two, and the axes of any two auxiliary rollers are parallel to each other.
As preferred, assist the gyro wheel and include that base wheel and cover establish the elasticity pressure cover that the base wheel is in, the base wheel passes through the shaft and rotates with set cylinder seat to be connected, is equipped with a plurality of anti-skidding muscle on the elasticity pressure cover lateral wall, presses to sheathe in at an elasticity: the anti-skid ribs are uniformly distributed along the circumferential direction of the elastic pressing sleeve. The elastic pressing sleeve is in contact with the cable, so that the cable can be pressed by the elasticity on one hand, and the cable is not easy to damage on the other hand.
The invention has the beneficial effects that: the structure is reasonable, the outdoor cable can be effectively deiced, the continuity of the deicing process is good, and the deicing capability is strong; the needle knife has the functions of pre-extrusion and pre-crushing, can protect the needle knife, and can improve the deicing effect.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a portion of the present invention;
FIG. 3 is a schematic view of the structure of the operating rod of the present invention
FIG. 4 is an enlarged view at A of FIG. 1;
FIG. 5 is a schematic structural view of the ice-breaking blade of the present invention;
FIG. 6 is a schematic view of the structure of the auxiliary roller of the present invention.
In the figure: the device comprises a sleeve seat 1, a first half cylinder seat 11, a first positioning seat 111, a second half cylinder seat 12, a second positioning seat 121, an operation pull rod 2, an upper rod 2a, a lower rod 2b, a rod seat 21, a pull ring 22, an auxiliary roller 3, a base wheel 31, an elastic pressing sleeve 32, a wheel shaft 33, an ice breaking seat shell 41, an ice breaking knife 42, a knife shaft 421, a knife disc 422, an inner spring 4221, a needle knife 423, a pre-breaking cam 5 and a cable 6.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
As shown in fig. 1 to 6, a short-distance deicer for cables comprises
The cable connector comprises a sleeve seat 1 and an operating pull rod 2, wherein a main middle hole for accommodating a cable is formed in the sleeve seat;
the sleeve seat bottom is equipped with pole socket 21, and the pole socket is articulated with the operating rod upper end, is equipped with at least one auxiliary wheel group on the sleeve seat, and auxiliary wheel group is including two auxiliary gyro wheels 3 that are used for cliping the cable, in an auxiliary wheel group: the two auxiliary rollers are symmetrically arranged;
the sleeve seat comprises a first half cylinder seat 11 and a second half cylinder seat 12, the first half cylinder seat is hinged with the second half cylinder seat, a first positioning seat 111 is arranged on the first half cylinder seat, a second positioning seat 121 is arranged on the second half cylinder seat, and the first positioning seat is clamped with the second positioning seat;
a plurality of ice breaking mechanisms are arranged in the main middle hole, and each ice breaking mechanism comprises an ice breaking seat shell 41, an ice breaking motor arranged in the ice breaking seat shell and an ice breaking blade 42 arranged on the ice breaking seat shell;
in an ice breaking mechanism; the ice breaking knife comprises a knife shaft 421, a knife disc 422 connected with the knife shaft and a plurality of needle knives 423 arranged on the knife disc, the knife shaft is rotatably connected with the ice breaking seat shell, the output end of the ice breaking motor is connected with the knife shaft, and the cutting edges of the ice breaking seat shell, the knife disc and any one of the needle knives are sequentially arranged along the axial direction of the main central hole;
in the main mesopore axial direction: any ice breaking seat shell is positioned between any needle knife and any auxiliary wheel set.
When the deicing device is used for deicing, the first half cylinder seat and the second half cylinder seat are opened relatively (the first positioning seat and the second positioning seat are separated), the deicing device is sleeved on a cable to be deiced, the first half cylinder seat and the second half cylinder seat are folded and fixed relatively (the first positioning seat is clamped with the second positioning seat), at the moment, each auxiliary wheel set clamps the cable, and the cable penetrates through the main middle hole of the sleeve seat. And starting each ice breaking motor, and then an operator can pull the operating pull rod to drive the sleeve seat to advance along the cable. In the process that the sleeve seat advances along the cable, the ice breaking motor drives each ice breaking blade to rotate, so that ice can be continuously and effectively removed. In the deicing process, the auxiliary roller can assist the sleeve seat to keep in a relatively stable position, and the problem of unsmooth deicing caused by vibration and shaking is avoided.
The operation pull rod comprises an upper rod 2a and a lower rod 2b, the upper end of the upper rod is hinged to the rod seat, the lower end of the upper rod is in threaded connection with the upper end of the lower rod, and the upper rod and the lower rod are coaxially arranged. The lower rod or the lower rod can be selected to be used according to different cable heights.
The lower end of the operating pull rod is provided with a pull ring 22, the outer side wall of the pull ring is connected with the lower rod, the pull ring is provided with a rubber outer cladding, and the axis of the pull ring is perpendicular to and intersected with the axis of the lower rod. The pull ring can be convenient for an operator to use and operate, and is favorable for holding and pulling.
The sleeve seat is provided with a plurality of pre-breaking mechanisms, each pre-breaking mechanism comprises a pre-breaking cam 5 and a pre-breaking motor used for driving the pre-breaking cam to rotate, the pre-breaking motors are arranged on the sleeve seat, and the axis of each pre-breaking cam is parallel to the axis of any auxiliary roller. Before the needle knife touches ice, the pre-breaking cams can extrude the ice layer frozen on the cable, so that pre-extrusion and pre-breaking are realized, the difficulty of subsequent deicing of the needle knife can be reduced, and the deicing effect is effectively improved.
The cutter head is provided with a plurality of slide holes corresponding to the needle knives one by one, and in the corresponding needle knives and slide holes: the needle knife is connected with the sliding hole in a sliding mode, an inner spring 4221 is arranged in the sliding hole, one end of the inner spring is connected with the needle knife, and the other end of the inner spring is connected with the cutter head. When the needle knives contact the ice layer frozen on the cable, the needle knives contacting the ice layer firstly can be retracted properly, and after the plurality of needle knives contact the ice layer together, the needle knives extrude and impact the ice layer simultaneously to ensure the ice breaking effect, and the needle knives can be protected to avoid the overlarge stress of the single needle knife.
In an ice breaking mechanism; the cutter shaft and the cutter head are coaxially arranged, the needle cutters are uniformly distributed along the circumferential direction of the cutter head, and the distance between the cutter head and the axis of the main central hole is larger than the distance between the auxiliary roller and the axis of the main central hole.
The number of the auxiliary wheel sets is two, and the axes of any two auxiliary idler wheels are parallel to each other.
The auxiliary roller comprises a base wheel 31 and an elastic pressing sleeve 32, the base wheel is sleeved on the base wheel, the base wheel is rotatably connected with a sleeve seat through a wheel shaft 33, a plurality of anti-skid ribs are arranged on the outer side wall of the elastic pressing sleeve, and one elastic pressing sleeve is provided with: the anti-skid ribs are uniformly distributed along the circumferential direction of the elastic pressing sleeve. The elastic pressing sleeve is in contact with the cable, so that the cable can be pressed by the elasticity on one hand, and the cable is not easy to damage on the other hand.
Claims (6)
1. A short-range cable deicer is characterized by comprising
The cable connector comprises a sleeve seat and an operating pull rod, wherein a main middle hole for accommodating a cable is formed in the sleeve seat;
the sleeve seat bottom is equipped with the pole socket, and the pole socket is articulated with the operation pull rod upper end, is equipped with at least one auxiliary wheel group on the sleeve seat, and auxiliary wheel group is including two auxiliary rollers that are used for cliping the cable, in an auxiliary wheel group: the two auxiliary rollers are symmetrically arranged;
the sleeve seat comprises a first half cylinder seat and a second half cylinder seat, the first half cylinder seat is hinged with the second half cylinder seat, a first positioning seat is arranged on the first half cylinder seat, a second positioning seat is arranged on the second half cylinder seat, and the first positioning seat is clamped with the second positioning seat;
a plurality of ice breaking mechanisms are arranged in the main middle hole, and each ice breaking mechanism comprises an ice breaking seat shell, an ice breaking motor arranged in the ice breaking seat shell and an ice breaking blade arranged on the ice breaking seat shell;
in an ice breaking mechanism; the ice breaking knife comprises a knife shaft, a knife disc connected with the knife shaft and a plurality of needle knives arranged on the knife disc, the knife shaft is rotatably connected with the ice breaking seat shell, the output end of the ice breaking motor is connected with the knife shaft, and the cutting edges of the ice breaking seat shell, the knife disc and any one of the needle knives are sequentially arranged along the axial direction of the main central hole;
in the main mesopore axial direction: any ice breaking seat shell is positioned between any needle knife and any auxiliary wheel set;
the sleeve seat is provided with a plurality of pre-breaking mechanisms, each pre-breaking mechanism comprises a pre-breaking cam and a pre-breaking motor for driving the pre-breaking cam to rotate, the pre-breaking motors are arranged on the sleeve seat, and the axis of each pre-breaking cam is parallel to the axis of any auxiliary roller;
the cutter head is provided with a plurality of slide holes corresponding to the needle knives one by one, and in the corresponding needle knives and slide holes: the needle knife is connected with the sliding hole in a sliding mode, an inner spring is arranged in the sliding hole, one end of the inner spring is connected with the needle knife, and the other end of the inner spring is connected with the cutter head.
2. The cable short-distance deicer according to claim 1, wherein the operating pull rod comprises an upper rod and a lower rod, the upper end of the upper rod is hinged with the rod seat, the lower end of the upper rod is in threaded connection with the upper end of the lower rod, and the upper rod and the lower rod are coaxially arranged.
3. The cable short-distance deicer according to claim 1, wherein the lower end of the operating pull rod is provided with a pull ring, the outer side wall of the pull ring is connected with the lower rod, the pull ring is provided with a rubber coating, and the axis of the pull ring is perpendicular to and intersects with the axis of the lower rod.
4. A cable short-run deicer according to claim 1 in which the ice is broken in an ice breaking mechanism; the cutter shaft and the cutter head are coaxially arranged, the needle cutters are uniformly distributed along the circumferential direction of the cutter head, and the distance between the cutter head and the axis of the main central hole is larger than the distance between the auxiliary roller and the axis of the main central hole.
5. A cable short-run de-icer according to claim 1, 2 or 3, wherein the number of said auxiliary wheel sets is two, and the axes of any two auxiliary rollers are parallel to each other.
6. The short-distance cable deicer according to claim 1, wherein the auxiliary roller comprises a base wheel and an elastic pressing sleeve sleeved on the base wheel, the base wheel is rotatably connected with the sleeve seat through a wheel shaft, a plurality of anti-skid ribs are arranged on the outer side wall of the elastic pressing sleeve, and on one elastic pressing sleeve: the anti-skid ribs are uniformly distributed along the circumferential direction of the elastic pressing sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711484070.9A CN109473932B (en) | 2017-12-29 | 2017-12-29 | Short-range cable deicer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711484070.9A CN109473932B (en) | 2017-12-29 | 2017-12-29 | Short-range cable deicer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109473932A CN109473932A (en) | 2019-03-15 |
| CN109473932B true CN109473932B (en) | 2020-10-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711484070.9A Active CN109473932B (en) | 2017-12-29 | 2017-12-29 | Short-range cable deicer |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110571743B (en) * | 2019-09-16 | 2021-07-20 | 南方电网科学研究院有限责任公司 | Handheld defroster of low-voltage transmission line |
| CN110820604B (en) * | 2019-10-11 | 2021-08-24 | 合肥工业大学 | Crawling deicing and snow removing device |
| CN110994521B (en) * | 2019-12-31 | 2020-11-17 | 山东科信建设工程有限公司 | Remote control cable defroster based on wireless communication network |
| CN111585235B (en) * | 2020-06-01 | 2021-06-08 | 蓝枫电气(杭州)有限公司 | Cable maintenance tool |
| CN111478263B (en) * | 2020-06-01 | 2021-03-23 | 蓝枫电气(杭州)有限公司 | Special defroster of municipal administration |
| CN112271684B (en) * | 2020-11-28 | 2021-12-07 | 贵州电网有限责任公司 | Deicing device for high-voltage cable of power distribution network |
| RU2764653C1 (en) * | 2021-04-26 | 2022-01-19 | Борис Васильевич Леваков | Method for removing ice from the stay wire (options) |
| CN113852022B (en) * | 2021-09-22 | 2023-01-10 | 深圳市骏鼎达新材料股份有限公司 | Multifunctional composite protective sleeve |
| CN114808703A (en) * | 2022-05-06 | 2022-07-29 | 韩雷 | Deicing device for diagonal draw bar of large-span bridge |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2529527C1 (en) * | 2013-05-07 | 2014-09-27 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Комсомольский-на-Амуре государственный технический университет" (ФГБОУ ВПО "КнАГТУ") | Device for ice removal from power transmission line wire |
| JP2017077146A (en) * | 2015-10-16 | 2017-04-20 | 中国電力株式会社 | Snow resistant ring removal device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201134657Y (en) * | 2007-12-17 | 2008-10-15 | 长庆石油勘探局 | Remote-control electrodynamic mechanical type line de-icer |
| CN101299523B (en) * | 2008-03-13 | 2010-04-21 | 汤靖邦 | Deicing robot for transmission distribution line |
| CN201194322Y (en) * | 2008-04-09 | 2009-02-11 | 国网北京电力建设研究院 | Conductor de-icing device for high-voltage transmission line |
| CN101777743B (en) * | 2010-03-30 | 2011-11-30 | 湖南大学 | Intelligent robot for removing ice in high-voltage transmission line |
| CN207853420U (en) * | 2017-12-29 | 2018-09-11 | 国网浙江省电力公司磐安县供电公司 | Cable short distance ice removal |
-
2017
- 2017-12-29 CN CN201711484070.9A patent/CN109473932B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2529527C1 (en) * | 2013-05-07 | 2014-09-27 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Комсомольский-на-Амуре государственный технический университет" (ФГБОУ ВПО "КнАГТУ") | Device for ice removal from power transmission line wire |
| JP2017077146A (en) * | 2015-10-16 | 2017-04-20 | 中国電力株式会社 | Snow resistant ring removal device |
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